Normally, the vitreous gel is anchored to the back of the eye.
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They might test the vitreous humor, the clear substance in eyes, for drugs or alcohol.
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One change has been the process of coating the cast iron with a vitreous enamel glaze.
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It's possible amyloids leak into the vitreous fluid of the eye from the cerebrospinal fluid, Campbell said.
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An apartment on the 85th floor of One57, the vitreous skyscraper in Midtown, sold for $53.97 million.
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For the autopsy, examiners ordered three toxicology tests on Craig — blood, urine and vitreous fluid of the eye.
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Floaters are caused by clumping of the vitreous humor, the gel-like fluid that fills the inside of the eye.
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Some cast iron cookware is covered with a coating of vitreous enamel glaze so that you don't have to re-season it.
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The band sound, a particularly iridescent variant on emo's signature crunchy jangle, conjures therapeutic warmth from the vitreous gleam of layered electric guitars.
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What you've got is a floater, a tiny piece of protein floating around the vitreous humor, the gel in the back of your eye.
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Due north, near the water's edge of the Upper West Side, three vitreous towers collectively known as Waterline Square are also expecting residents this year.
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The patients' severe visual loss after the injection was associated with ocular hypertension, hemorrhagic retinopathy, vitreous hemorrhage, combined traction and rhegmatogenous retinal detachment, and lens dislocation.
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The thought of having three large needles stuck into my eyeball, and the vitreous humor then being sucked out while I was awake, did not appeal.
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Then, the antifreeze chemical ethylene glycol is used to turn the brain into a vitreous (glass-like) solid, able to withstand long-term cryogenic storage at very low temperature.
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Closings at 53 West 53, the supertall, vitreous building between Fifth Avenue and Avenue of the Americas, began earlier this year, with prices starting at around $3 million for a one-bedroom.
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Instead of having to cause a retinal detachment, they'd like to be able to get the right amount of transduction with an injection into the vitreous, the clear jelly that fills the eyeball.
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At the Charles, a vitreous tower under construction on the Upper East Side, 19 of 25 units are under contract, including a penthouse combination that sold for more than $58 million in 2015.
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Researchers also hypothesize that amyloid proteins are synthesized by neural cells within the eye, a similar process to what happens in the brains of Alzheimer's patients, appearing in both the retina and the vitreous fluid.
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But it's still important to see a doctor if new floaters arise because the detaching vitreous gel can pull on the retina, causing it to tear, which can lead to retinal detachment, a serious condition.
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But the single biggest sale last month, at $42 million, was a penthouse covering the entire 77th floor of One57, the vitreous skyscraper in the heart of Manhattan's Billionaires' Row, at 157 West 0003th Street.
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An even deeper price cut came in last month's second-biggest closed transaction: a foreclosure sale at One57, the vitreous skyscraper that holds the record ($100.4 million) for the highest price paid for a single New York residence.
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"Barbara Lekberg is an out-and-out romantic whose welded figures are made from thin, flowing sheets of steel, here and there adorned with color in vitreous enamel," Stuart Preston wrote in The New York Times in 21992, reviewing a Sculpture Center exhibition.
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"Diving Woman," a triumph of technologically altered shoegaze, could be Ride's "Seagull" if that track's furiously blurry wall of sound were clinically dissected, pieced back together modularly, and painted over with a thin, vitreous glaze, as the bassline and echoey dissonant lead guitar twist and shiver.
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Mr. Liu, an avid collector and the chairman of the Sunline Group, a Shanghai holding company with interests that include financial services, real estate and chemicals, officially closed on a 62nd-floor aerie at One57, the vitreous Midtown Manhattan residential tower popular among his wealthy compatriots.
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A glass instructor friend, who until Wednesday of last week was — at the assurance of her school that until recently did not provide her healthcare — still holding highly tactile glass blowing lessons, came up with recipes for students to do mold-casting with sugar and other vitreous-like home materials.
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The processes behind Emark's live shows form the basis of the music video for the group's new single, "Husby-klit Bk." It's taken from their upcoming albums Māra I and Māra II and was made by visual artist Robert Seidel, who previously collaborated with von Sallwitz on the installation and experimental video, Vitreous.
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If they're close enough, they can see something is different with me, something unnerving, as if I have no features, I am embryonic, pre-eyebrows, pre-eyelids, pre-mouth, I am like a water-bear talking to them, or an amniotic traveller, a vitreous floater on their own eyeball, human ectoplasm risen on its hind legs to discourse with them.
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The vitreous chamber is the space in the eye occupied by vitreous humor.
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Floaters are generally harmless, but the sudden onset of recurring floaters may signify a posterior vitreous detachment or other diseases of the eye. Posterior vitreous detachment: Once liquid vitreous enters the sub-hyaloid space between the vitreous cortex and the retina, it may strip the vitreous cortex off the retina with each eye movement (see Saccade).
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As one gets older, pockets of fluid can develop in the vitreous. When these pockets develop near the back of the eye, the vitreous can pull away from the retina and possibly tear it. Posterior vitreous detachment accounts for 3.7–11.7% of vitreous hemorrhage cases.
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Wheat vitreousness is an optical property used by many countries to grade or quantify durum wheat. Based on vitreouness, wheat can be classified into three main classes: vitreous, mealy and piebald. Vitreous wheat differs from non-vitreous by kernel appearance (starchy and opaque); vitreous wheat are considered better quality than non-vitreous kernels, because of higher quality semolina protein, nice color and uniform coarser granulation.
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The vitreous membrane (or hyaloid membrane or vitreous cortex) is a layer of collagen separating the vitreous humour from the rest of the eye. At least two parts have been identified anatomically. The posterior hyaloid membrane separates the rear of the vitreous from the retina. It is a false anatomical membrane.
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Central vitreous liquefies, fibrillar degeneration occurs, and the tracts break up (syneresis). Coarse strands develop with ageing. The gel volume decreases with age, and the liquid volume increases. The cortex may disappear at sites, allowing liquid vitreous to extrude adjacently into the potential space between vitreous cortex and retina (vitreous detachment).
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The eye contains a jelly-like substance called the vitreous. Shrinking of the vitreous usually causes the hole. As a person ages, the vitreous becomes watery and begins to pull away from the retina. If the vitreous is firmly attached to the retina when it pulls away, a hole can result.
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The vitreous body (vitreous meaning "glass-like", from Latin vitreus, equivalent to vitr(um) glass + -eus -ous) is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates. It is often referred to as the vitreous humor or simply "the vitreous".
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The vitreous fluid is not present at birth (the eye being filled with only the gel-like vitreous body), but found after age 4-5, and increases in size thereafter. Produced by cells in the non-pigmented portion of the ciliary body, the vitreous humour is derived from embryonic mesenchyme cells, which degenerate after birth. The nature and composition of the vitreous humour changes over the course of life. In adolescence, the vitreous cortex becomes more dense and vitreous tracts develop; and in adulthood, the tracts become better defined and sinuous.
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Vitreous hemorrhage is the extravasation, or leakage, of blood into the areas in and around the vitreous humor of the eye. The vitreous humor is the clear gel that fills the space between the lens and the retina of the eye. A variety of conditions can result in blood leaking into the vitreous humor, which can cause impaired vision, floaters, and photopsia.
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PVD may also occur in cases of cataract surgery, within weeks or months of the surgery. The vitreous membrane is more firmly attached to the retina anteriorly, at a structure called the vitreous base. The membrane does not normally detach from the vitreous base, although it can be detached with extreme trauma. However, the vitreous base may have an irregular posterior edge.
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The vitreous humour is in contact with the vitreous membrane overlying the retina. Collagen fibrils attach the vitreous at the optic nerve disc and the ora serrata (where the retina ends anteriorly), at the Wieger-band, the dorsal side of the lens. The vitreous also firmly attaches to the lens capsule, retinal vessels, and the macula, the area of the retina which provides finer detail and central vision. Aquaporin 4 in Müller cell in rats transports water to the vitreous body.
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The forewings are semi-vitreous pale golden yellow, the apical one-third densely sprinkled with grey scales. The hindwings are semi-vitreous pale golden yellow.
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The vitreous (Latin for "glassy") humor is a gel which fills the eye behind the lens. Between it and the retina is the vitreous membrane. With age the vitreous humor changes, shrinking and developing pockets of liquefaction, similar to the way a gelatin dessert shrinks and detaches from the edge of a pan. At some stage the vitreous membrane may peel away from the retina.
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Vitreous touch syndrome, is a late complication of intra capsular cataract extraction wherein the vitreous bulges through the pupillary aperture, and touches and attaches to the corneal endothelium.
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The acute herpetic phase is characterized by when viral particles infiltrate the retina and vitreous causing an inflammatory reaction. Together, the viral particles and mononuclear cells in the vitreous cause the retina to become opaque. In response to all this, lymphocytes and plasma cells diffuse into the vitreous as well.
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The vitreous humor is a transparent, colorless, gelatinous mass that fills the space in the eye between the lens and the retina. It is surrounded by a layer of collagen called the vitreous membrane (or hyaloid membrane or vitreous cortex) separating it from the rest of the eye. It makes up four-fifths of the volume of the eyeball. The vitreous humour is fluid-like near the centre, and gel-like near the edges.
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Hyalocytes, also known as vitreous cells, are cells of the vitreous body, which is the clear gel that fills the space between the lens and the retina of the eye. Hyalocytes occur in the peripheral part of the vitreous body, and may produce hyaluronic acid, collagen, fibrils, and hyaluronan. Hyalocytes are star-shaped (stellate) cells with oval nuclei. The development of the vitreous is organized into three stages: primary, secondary, and tertiary.
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Surgical procedures may be performed to treat complications like retinal detachments, nonclearing vitreous hemorrhage, and epiretinal membranes. Pars plana vitrectomy may be advised in complications like vitreous hemorrhage and retinal detachment.
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Retinal tears are closed by laser treatment or cryotherapy, and detached retinas are reattached surgically. Even after treatment, it can take months for the body to clear all of the blood from the vitreous. In cases of vitreous hemorrhage due to detached retina, long-standing vitreous hemorrhage with a duration of more than 2–3 months, or cases associated with rubeosis iridis or glaucoma, a vitrectomy may be necessary to remove the standing blood in the vitreous.
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The vitreous chamber is the largest of the three chambers and is located behind the lens and in front of the optic nerve. This chamber is filled with a thick, clear gel-like substance called the vitreous humor (also vitreous body). The humor plays a crucial role in supporting the posterior side of the lens.
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Therefore, red blood cell mechanics is the major determinant of flow properties of blood.The ocular Vitreous humor is subject to rheologic observations, particularly during studies of age-related vitreous liquefaction, or synaeresis.
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If the vitreous pulls away from the retina, it is known as a vitreous detachment. As the human body ages, the vitreous often liquefies and may collapse. This is more likely to occur, and occurs much earlier, in eyes that are nearsighted (myopia). It can also occur after injuries to the eye or inflammation in the eye (uveitis).
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During the primary stage, which occurs from 3–6 weeks, the basic components of the vitreous begin to form from the mesenchyme embryonic cell layer. Hyalocytes likely develop from the vascular primary vitreous.
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Nearly every person who undergoes a vitrectomy—without ever having had cataract surgery—will experience progression of nuclear sclerosis after the operation. This may be because the native vitreous humor is different from the solutions used to replace the vitreous (vitreous substitutes), such as BSS Plus. This may also be because the native vitreous humour contains ascorbic acid which helps neutralize oxidative damage to the lens and because conventional vitreous substitutes do not contain ascorbic acid. As such, for phakic patients requiring a vitrectomy it is becoming increasingly common for ophthalmologists to offer the vitrectomy combined with prophylactic cataract surgery to prevent cataract formation.
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The inner limiting membrane is the boundary between the retina and the vitreous body, formed by astrocytes and the end feet of Müller cells. It is separated from the vitreous humor by a basal lamina.
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Synchysis scintillans is a degenerative condition of the eye resulting in liquefied vitreous humor and the accumulation of cholesterol crystals within the vitreous. It is also known as cholesterolosis bulbi. The vitreous liquifies in a process known as syneresis. Synchysis scintillans appears as small white floaters that freely move in the posterior part of the eye, giving a snow globe effect.
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Intravitreal administration delivers substances directly into the vitreous chamber. Intravitreal is a route of administration of a drug, or other substance, in which the substance is delivered into the vitreous humor of the eye. "Intravitreal" literally means "inside an eye". Intravitreal injections were first introduced in 1911 when Ohm gave an injection of air into the vitreous humor to repair a detached retina.
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"Poland: Ceramics."The Grove Dictionary of Art. 1996. Stoneware is sturdy and vitreous to semi-vitreous and porous when fired. Glaze can be applied and the piece can be re-fired to create a watertight surface.
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After death, the vitreous resists putrefaction longer than other body fluids. The vitreous potassium concentration rises so predictably within the hours, days and weeks after death, that vitreous potassium levels are frequently used to estimate the time since death (post-mortem interval) of a corpse. The metabolic exchange and equilibration between systemic circulation and vitreous humour is so slow that vitreous humour is sometimes the fluid of choice for postmortem analysis of glucose levels or substances which would be more rapidly diffused, degraded, excreted or metabolized from the general circulation. According to Jewish religion when a forensic or post-mortem toxicology tests is deemed necessary, extracting the vitreous fluid for forensic chemical analysis would be preferred to blood analysis, so as eliminate the loss of even a few droplets of blood from the body prior to burial.
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Vitreous (eye) fluid provides the most accurate account of blood alcohol concentration.
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They are translucent with a vitreous lustre and a reddish yellow streak.
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When the edge is irregular, the forces of the vitreous membrane peeling off the retina can become concentrated at small posterior extensions of the vitreous base. Similarly, in some people with retinal lesions such as lattice retinal degeneration or chorio-retinal scars, the vitreous membrane may be abnormally adherent to the retina. If enough traction occurs the retina may tear at these points. If there are only small point tears, these can allow glial cells to enter the vitreous humor and proliferate to create a thin epiretinal membrane that distorts vision.
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Persistent tunica vasculosa lentis is a congenital ocular anomaly. It is a form of persistent hyperplastic primary vitreous (PHPV). It is a developmental disorder of the vitreous. It is usually unilateral and first noticed in the neonatal period.
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It may be vitreous or semi- > vitreous. It is usually coloured grey or brownish because of impurities in > the clay used for its manufacture, and is normally glazed.Though "normally > glazed" is not true for many historical and modern examples.
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Once the needle is in the vitreous cavity, the doctor pushes the plunger to release the drug into the cavity. After that, the needle is removed, and the injection site is immediately covered with a cotton swab to avoid vitreous reflux (reflux of fluid from the vitreous cavity). The excess PVP-I solution is rinsed away. Finally, the doctor checks the patient’s vision and intraocular pressure (IOP) of the eye.
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The costal area is not wholly dark, but the basal three-fifths are vitreous.
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Usually of a white or light greenish color and vitreous lustre, in acicular crystallizations.
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"Vitreous Hemorrhage." CRS – Eye Advisor (2010): 1. Health Source – Consumer Edition. Web. 29 November 2011.
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By 1938 a new plant producing vitreous sanitary ware had begun operation. During World War II the plant produced munitions including mortar bombs and grenades, as well as boilers and vitreous china for military use. In 1953 the company was renamed "Ideal Standard". In 1976 the boiler and radiator operations of the plant were acquired by Stelrad Group (Metal Box), whilst the vitreous china (bathroom furniture) operations remained under the control of Ideal Standard.
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A tear in the retina can allow fluids from the eye to leak in behind the retina, which causes retinal detachment. When this occurs, blood from the retinal blood vessels can bleed into the vitreous. Retinal tear accounts for 11.4–44% of vitreous hemorrhage cases.
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Posterior Vitreous Detachment is diagnosed via dilated eye examination. For some patients the vitreous gel is extremely clear and so it can be hard to see the PVD. In these cases, additional imaging such as Optical Coherence Tomography (OCT) or ocular ultrasound are used.
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Ear-stud decorated with a rosette surrounded by concentric bands. Gold with vitreous glass paste insets, 530–480 BC. British Museum. Ear-stud decorated with a rosette surrounded by concentric bands, globules and flowers. Gold with vitreous glass paste insets, 530–480 BC. British Museum.
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The luster is usually vitreous to pearly. The melting point of wollastonite is about 1540 ˚C.
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These can bleed and be attached to the vitreous humour. The attachment can cause traction retinal detachment.
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Porcelain enamel is a marketing term used in the US, and is not porcelain but vitreous enamel.
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5th edition. Dee Unglaub Silverthorn It fills both the anterior and the posterior chambers of the eye, and is not to be confused with the vitreous humour, which is located in the space between the lens and the retina, also known as the posterior cavity or vitreous chamber.
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The name Proliferative vitreo retinopathy was provided in 1989 by the Silicone Oil Study group. The name is derived from proliferation (by the retinal pigment epithelial and glial cells) and vitreo retinopathy to include the tissues which are affected, namely the vitreous humor (or simply vitreous) and the retina.
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Diabetic retinopathy accounts for 31.5–54% of all cases of vitreous hemorrhage in adults in the United States.
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The collection includes an original plate of vitreous enamel and the current set of plates of embossed steel.
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Model of a human eye. Features mentioned in this article are 1. vitreous humour 3. ciliary muscle, 6.
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It is not radioactive. It has vitreous luster. Teruggite is rated 2.5 on the Mohs Scale of hardness.
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This technique is called transmission electron cryomicroscopy of vitreous sections (CEMOVIS) or transmission electron cryomicroscopy of frozen-hydrated sections.
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Scolecite is typically seen as a colorless to white, transparent to translucent mineral with a vitreous to silky luster.
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A posterior vitreous detachment (PVD) is a condition of the eye in which the vitreous membrane separates from the retina. It refers to the separation of the posterior hyaloid membrane from the retina anywhere posterior to the vitreous base (a 3–4 mm wide attachment to the ora serrata). The condition is common for older adults; over 75% of those over the age of 65 develop it. Although less common among people in their 40s or 50s, the condition is not rare for those individuals.
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Therapy is not required or indicated in posterior vitreous detachment, unless there are associated retinal tears, which need to be repaired. In absence of retinal tears, the usual progress is that the vitreous humor will continue to age and liquefy and floaters will usually become less and less noticeable, and eventually most symptoms will completely disappear. Prompt examination of patients experiencing vitreous humor floaters combined with expeditious treatment of any retinal tears has been suggested as the most effective means of preventing certain types of retinal detachments.
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If the vitreous is firmly attached to the retina when it pulls away, it can tear the retina and create a macular hole. Also, once the vitreous has pulled away from the surface of the retina, some of the fibers can remain on the retinal surface and can contract. This increases tension on the retina and can lead to a macular hole. In either case, the fluid that has replaced the shrunken vitreous can then seep through the hole onto the macula, blurring and distorting central vision.
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Buffalo China, Inc., formerly known as Buffalo Pottery, was a company founded in 1901 in Buffalo, New York as a manufacturer of semi-vitreous, and later vitreous, china. Prior to its acquisition by Oneida Ltd. in 1983, the company was one of the largest manufacturers of commercial chinaware in the United States.
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' E.Signorini. Ceram.Inf. 26. No.301. 1991 An example is by ASTM, who state "The term vitreous generally signifies less than 0.5% absorption, except for floor and wall tile and low-voltage electrical insulators, which are considered vitreous up to 3% water absorption."ASTM C242-01. 'Standard Terminology Of Ceramic Whitewares and Related Products'.
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The phenomenon known as charging or beam-induced movement makes collecting high-tilt images of samples in vitreous ice challenging.
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The late cicatricial phase of ARN includes changes in the way the vitreous is organized due to the cellular infiltration seen in the previous phase. In the vitreous and on top of the thinned necrotic retina, contractile membranes may form. Majority of patients with ARN will experience detachment of their retina in the affected eye.
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Vitrectomy is a surgery to remove some or all of the vitreous humor from the eye. Anterior vitrectomy entails removing small portions of the vitreous humor from the front structures of the eye—often because these are tangled in an intraocular lens or other structures. Pars plana vitrectomy is a general term for a group of operations accomplished in the deeper part of the eye, all of which involve removing some or all of the vitreous humor—the eye's clear internal jelly. Even before the modern era, some surgeons performed crude vitrectomies.
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The Causes of Pinholes in Vitreous China Sanitaryware. M. E. Twentyman, P. Hancock. The British Ceramic Research Association. RP. 706. 1979.
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Diagnosis and classification of intraocular lymphoma can be challenging because of the sparse cellularity and the characteristics of the vitreous specimens.
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The risk of retinal detachment is the greatest in the first 6 weeks following a vitreous detachment, but can occur over 3 months after the event. The risk of retinal tears and detachment associated with vitreous detachment is higher in patients with myopic retinal degeneration, lattice degeneration, and a familial or personal history of previous retinal tears/detachment.
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Tite et al. report that frits, unusually colored blue by cobalt, found in “fritting pans” at Amarna have compositions and microstructures similar to that of vitreous faience, a higher-temperature form of Egyptian faience that incorporated cobalt into its body.Tite et al. 1998, 116, 118. In their reconstruction of the manufacture of vitreous faience, Tite et al.
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Its scope included, with experiments on the "qualities of air", others "concerning the vitreous phosphori", and "relating to the electricity of bodies".
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The crystals are brittle and break easily into multiple fragments. Hardness is on the order of 2-3. The luster is vitreous.
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The landscape around the Besednice is also known as a site of the moldavites (an olive-green or dull greenish vitreous substance).
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The common intermediate host, the bully, Tylodelphys dwells in its host's eyes in the vitreous liquid between the lens and the retina.
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There are different techniques of enamelling and one of them is when a vitreous coating is fused on to a metallic surface.
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The apex is smooth and vitreous. The subsequent whorls are inflated and decussate. The longitudinals are oblique and tenuous. The aperture is oblong.
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Finally, vitreous hemorrhage, inflammation, or both associated with a PVD also may stimulate ERM formation. Both sexes appear to be affected equally frequently.
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Epiretinal membrane (also called macular pucker) is a disease of the eye in response to changes in the vitreous humor or more rarely, diabetes. Sometimes, as a result of immune system response to protect the retina, cells converge in the macular area as the vitreous ages and pulls away in posterior vitreous detachment (PVD). PVD can create minor damage to the retina, stimulating exudate, inflammation, and leucocyte response. These cells can form a transparent layer gradually and, like all scar tissue, tighten to create tension on the retina which may bulge and pucker, or even cause swelling or macular edema.
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350px The pecten or pecten oculi is a comb-like structure of blood vessels belonging to the choroid in the eye of a bird. It is a non-sensory, pigmented structure that projects into the vitreous humor from the point where the optic nerve enters the eyeball. The pecten is believed to both nourish the retina and control the pH of the vitreous body. High level of enzyme alkaline phosphatase activity in pecten oculi has been linked to transport of nutrient molecules from highly vascularized pecten oculi into vitreous and then into retinal cells for nourishment.
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The hyaloid fossa is a depression on the anterior surface of the vitreous body in which lies the crystalline lens. The name hyaloid fossa is synonymous with patellar fossa. Lens is lined by capsular epithelium. Accumulation of fluid—blood or exudates—can occur in the potential space in which it creates between the vitreous and the lens, called the retrolenticular space.
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Ocriplasmin (trade name Jetrea) is a recombinant protease with activity against fibronectin and laminin, components of the vitreoretinal interface. It is used for treatment of symptomatic vitreomacular adhesion, for which it received FDA approval on 17 October 2012. It works by dissolving the proteins that link the vitreous to the macula, resulting in posterior detachment of the vitreous from the retina.
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593126 Automatic machine to remove from the tiles the slobbers left by the stamps on the edges. 1958 - 2 August Licence n.593127 Pump for dense liquids, particularly for vitreous enamel in watery suspension for the ceramic industry. 1958 - 25 September Licence n.595789 Machine to retrieve the vitreous enamel of the tiles which result defective after the humid glazing.
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The collagen fibres of the vitreous are held apart by electrical charges. With aging, these charges tend to reduce, and the fibres may clump together. Similarly, the gel may liquefy, a condition known as synaeresis, allowing cells and other organic clusters to float freely within the vitreous humour. These allow floaters which are perceived in the visual field as spots or fibrous strands.
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Once blood is removed, photocoagulation with a laser can shrink unhealthy blood vessels or seal retinal holes. Vitreous floaters – deposits of various size, shape, consistency, refractive index, and motility within the eye's normally transparent vitreous humor which can obstruct vision. Here pars plana vitrectomy has been shown to relieve symptoms. Because of possible side effects, however, it is used only in severe cases.
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Terson syndrome or Terson's syndrome is the occurrence of a vitreous hemorrhage of the human eye in association with subarachnoid hemorrhage. Vitreous hemorrhage of the eye can also occur in association with intracranial hemorrhage and elevated intracranial pressure (ICP). Intraocular hemorrhage can be a subretinal, retinal, preretinal, subhyaloidal, or intra-vitreal hemorrhage. Its likely cause is a rapid increase in ICP.
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Vitreous enamel panels designed by Doug Patterson in 1997 have been installed on the East London line (now part of the London Overground) platforms.
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Diagnosis is based on fundus examination that reveals an empty vitreous with vitreoretinal degeneration in similar picture to stickler's syndrome but with no systemic associations.
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Formed like a worm. Ventral. The lower border or side. Ventricose. Swollen or inflated on the ventral side. Vibratile. Moving from side to side. Vitreous.
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Instead of laser surgery, some people require a vitrectomy to restore vision. A vitrectomy is performed when there is a lot of blood in the vitreous. It involves removing the cloudy vitreous and replacing it with a saline solution. Studies show that people who have a vitrectomy soon after a large hemorrhage are more likely to protect their vision than someone who waits to have the operation.
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Computed Tomography image of a patient with Coats' disease, showing total exudative retinal detachment in the right eye.Imaging studies such as ultrasonography (US), Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI) can aid diagnosis. On ultrasound, Coats' disease appears as a hyperechoic mass in the posterior vitreous without posterior acoustic shadowing; vitreous and subretinal hemorrhage may often be observed.BerrocalT, de Orbe A, Prieto C, et al.
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On CT, the globe appears hyperdense compared to normal vitreous due to the proteinaceous exudate, which may obliterate the vitreous space in advanced disease. The anterior margin of the subretinal exudate enhances with contrast. Since the retina is fixed posteriorly at the optic disc, this enhancement has a V-shaped configuration. On MRI, the subretinal exudate shows high signal intensity on both T1- and T2-weighted images.
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Predisposing factors for Postoperative PVR are preoperative PVR, aphakia, high levels of vitreous proteins, duration of retinal detachment before corrective surgery, the size of the retinal hole or tear, intra-ocular inflammation, vitreous hemorrhage, and trauma to the eye. An equation to calculate the patient's risk for acquiring PVR is: :PVR score = 2.88 × (Grade C PVR)+ 1.85 × (Grade B PVR) + 2.92 × (aphakia) + 1.77 × (anterior uveitis) + 1.23 × (quadrants of detachment) + 0.83 × (vitreous haemorrhage) + 23 × (previous cryotherapy) 1 is added if the risk factor is present and 0 if the risk factor is absent. A patient is at a high risk for developing PVR if their PVR score is >6.33.
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Macular hole on the right eye Classification of Vitreomacular Adhesion, Traction, and Macular Hole (IVTS 2013) Macular degeneration is a condition affecting the tissues lying under the retina, while a macular hole involves damage from within the eye, at the junction between the vitreous and the retina itself. There is no relationship between the two diseases. Depending upon the degree of attachment or traction between the vitreous and the retina, there may be risk of developing a macular hole in the other eye. In those cases where the vitreous has already become separated from the retinal surface, there is very little chance of developing a macular hole in the other eye.
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Rarely, choroidal neovascularization may develop as the juxtapapillary nerve fibers are disrupted, with subsequent subretinal hemorrhage and retinal scarring. Even more rarely, vitreous hemorrhage may develop.
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It has vitreous luster. It is not radioactive. Fabianite is rated 6 on the Mohs Scale. It was named for Hans-Joachim Fabian, a German geologist.
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Kumar has over 250 publications in medical journals, chapters in over 20 books, authored various books on diseases of the retina and vitreous and their management.
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It has excellent cleavage parallel to the largest face visible which is (001), has a brittle tenacity, has a light blue streak, and has a vitreous luster.
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Symptoms of eye invasion include visual impairment, pain, keratitis, and retinal edema. Worms usually appear in the anterior chamber and vitreous and can sometimes be removed surgically.
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It has a vitreous lustre with a white streak, and is brown or yellow in color. It has a conchoidal, uneven fracture, and an orthorhombic crystal system.
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There exists however a GaS4 unit within the Ga-S crystal which has been noted as the glass former. The La-S bond is ionic and likely to be a network modifier. By adding an ionic sulfide to the crystal, like La2S3, it is possible to modify the crystalline Ga2S3 into a vitreous structure. Of all the rare-earth sulfides, lanthanum gives the largest range of vitreous compositions.
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Adults are usually found in the eyelids, tear glands, tear ducts, or the so-called "third eyelid" (nictitating membrane). Occasionally, they are found in the eyeball itself, either under the conjunctiva (the membrane that covers the white part of the eye) or in the vitreous cavity of the eyeball.Xue, C., N. Tian, and Z. Huang (2007) "Thelazia callipaeda in human vitreous." Canadian Journal of Ophthalmology 42(6):884-885.
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In general, the diagnosis of chorioretinitis is based on direct examination of active chorioretinal inflammation and/or by detection of leukocytes in the vitreous humor on ophthalmic examination.
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The egg is made of 18Kt yellow gold and covered with transparent green vitreous enamel. The upper half of the egg opens up and reveals a golden dove.
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Bruch's membrane is the innermost layer of the choroid. It is also called the vitreous lamina, because of its glassy microscopic appearance. It is 2–4 μm thick.
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There is no good evidence for any preventive actions, since it appears this is a natural response to aging changes in the vitreous. Posterior vitreous detachment (PVD) has been estimated to occur in over 75 per cent of the population over age 65, that PVD is essentially a harmless condition (although with some disturbing symptoms), and that it does not normally threaten sight. However, since epiretinal membrane appears to be a protective response to PVD, where inflammation, exudative fluid, and scar tissue is formed, it is possible that NSAIDs may reduce the inflammation response. Usually there are flashing light experiences and the emergence of floaters in the eye that herald changes in the vitreous before the epiretinal membrane forms.
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Moore's lightning streaks are lightning type streaks (photopsia) (seen to the temporal side) due to sudden head or eye movement in the dark. They are generally caused by shock waves in the vitreous humor hitting the retina or traction on the retina from fibers in the vitreous humor. The implication is that the vitreous is softer than normal, generally this is not a cause for alarm provided they are momentary, occur only in the dark, are due to sudden head movements (acceleration) and do not occur along with many new tiny black floating specks in the vision. Professional advice should be sought in cases of doubt, as retinal detachment, a serious condition, also can cause flashes in the eye.
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Lomonosovite forms lamellar and tabular crystals with perfect cleavage. It is macroscopically brown, from cinnamon-brown to black. It is transparent in thin plates. The luster vitreous to adamantine.
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Intermediate uveitis is a form of uveitis localized to the vitreous and peripheral retina. Primary sites of inflammation include the vitreous of which other such entities as pars planitis, posterior cyclitis, and hyalitis are encompassed. Intermediate uveitis may either be an isolated eye disease or associated with the development of a systemic disease such as multiple sclerosis or sarcoidosis. As such, intermediate uveitis may be the first expression of a systemic condition.
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Retrieved 2012-03-24. He applied his MR microscopy to the study of ocular tissues and tumors and used histological correlation to refine his technique. Dr. Martel was the first to study the biophysical properties of vitreous using NMR spectroscopy and imaging. After the analysis of this ocular structure, he extended his research into the area of vitreous hemorrhage (bleeding into the eye), an area of great importance in loss of sight.
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Vermont named two official state fish by Joint Resolution of the Vermont General Assembly in 1978 and statute in 2011: the cold-water fish, the brook trout (Salvelinus fontinalis) and the warm-water fish, the walleye (Sander vitreous vitreous). The state tree is the sugar maple (Acer saccharum), effective in 1949. The sugar maple is the source of maple syrup, Vermont's most famous export. The Morgan horse became the state mammal in 1961.
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Aging causes laxity, downward shift of eyelid tissues and atrophy of the orbital fat. These changes contribute to the etiology of several eyelid disorders such as ectropion, entropion, dermatochalasis, and ptosis. The vitreous gel undergoes liquefaction (posterior vitreous detachment or PVD) and its opacities — visible as floaters — gradually increase in number. Various eye care professionals, including ophthalmologists (eye doctors/surgeons), optometrists, and opticians, are involved in the treatment and management of ocular and vision disorders.
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Within the vertebrate eye, there are considered to be three chambers: anterior, posterior, and vitreous. It is important to note that the eye can also be classified as having two cavities: anterior and posterior. Both the anterior and posterior chambers are located within the anterior cavity, while the vitreous chamber is located in the posterior cavity. The best way to distinguish between the two cavities is to use the lens as a dividing point.
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Asteroid hyalosis is a degenerative condition of the eye involving small white opacities in the vitreous humor. It is known to occur in humans, dogs, cats, horses, and chinchillas. Clinically, these opacities are quite refractile, giving the appearance of stars (or asteroids) shining in the night sky—except that ocular asteroids are often quite mobile. Ocular asteroids must be distinguished from the more common typical vitreous floaters, which are usually fibrillar or cellular condensates.
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Eventually the band reunited again as Vitreous Humor with Rice back in the fold; the band released one more album in 1998- the odds-and-sods "Posthumous". Danny Pound continues to make music as a solo artist as The Danny Pound Band.MySpace.com - The Danny Pound Band - LAWRENCE, KANSAS - Rock / Folk Rock / Acoustique - www.myspace.com/thedannypoundband Dan Benson from Vitreous Humor/The Regrets played drums for the band, but left and was replaced by Ken Pingleton.
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Historically, enameling is the application of glass-on-metal (See vitreous enamel). Traditional enameling methods, such as Cloisonné and Grisaille, require expensive kilns and often years of training and experience.
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The apical whorl is vitreous. The others are smooth and have gradual spiral ascent. Three upper whorls (especially the penultimate) show radially sculptured sutures. The two keels are margined accordingly.
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The length of the shell attains 18.5 mm, its diameter 6 mm. A most graceful, dark ocher, fusiform species. It contains seven angulate whorls. The protoconch is vitreous and purple colored.
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Ocriplasmin can degrade various structural proteins, including laminin and fibronectin, which are localized in the vitreoretinal surface. Here, these two proteins are involved in vitreoretinal attachment. Ocriplasmin induces posterior vitreous detachment.
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Burmantofts Vitreous Mosaic in County Arcade, Leeds Burmantofts Pottery was the common trading name of a manufacturer of ceramic pipes and construction materials, named after the Burmantofts district of Leeds, England.
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Two types of glass solders are used: vitreous, and devitrifying. Vitreous solders retain their amorphous structure during remelting, can be reworked repeatedly, and are relatively transparent. Devitrifying solders undergo partial crystallization during solidifying, forming a glass-ceramic, a composite of glassy and crystalline phases. Devitrifying solders usually create a stronger mechanical bond, but are more temperature-sensitive and the seal is more likely to be leaky; due to their polycrystalline structure they tend to be translucent or opaque.
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By this method, we are reducing the risk of lens particles falling into the vitreous or back of the eye. The IOL acts as a barrier or scaffold preventing the lens remnants from falling back. Since there is also separation of the posterior part of the eye (vitreous) from the anterior part (aqueous), there is less risk of retinal problems. Moreover, there is no need for special instruments or additional training required once this method is learnt.
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A unilateral decrease in visual acuity is the most common symptom of toxoplasmic retinitis. Under ophthalmic examination, toxoplasmic chorioretinitis classically appears as a focal, white retinitis with overlying moderate inflammation of the vitreous humour. A unifocal area of acute-onset inflammation adjacent to an old chorioretinal scar is virtually pathognomonic for toxoplasmic chorioretinitis. Focal condensation of vitreous and inflammatory cells may be seen overlying the pale yellow or gray-white raised lesion in the posterior pole.
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Kalsilite (KAlSiO4) is a vitreous white to grey feldspathoidal mineral that is found in some potassium-rich lavas, such as from Chamengo Crater in Uganda. It has a relative hardness of 5.5.
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Intravitreal ganciclovir implant has the benefit of less systemic toxicity. An adverse effect of this is retinal detachment (and vitreous hemorrhage), also there is no systemic beneficial effect for cytomegalovirus organ disease.
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Igneous textures include those that refer to the size of the mineral grains; vitreous – glassy, without crystals, aphanitic – grains not visible, phaneritic – grains clearly visible, and porphyritic – large grains in a finer matrix.
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The primary vitreous used in formation of the eye during fetal development remains in the eye upon birth and is hazy and scarred. The symptoms are leukocoria, strabismus, nystagmus and blurred vision, blindness.
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William Ryan & Charles Radford. Institute of Materials, 1997'Methods Of Extending The Narrow Vitrification Range Of Clays.' E.V. Glass & Ceramics 36, (8), 450, 1979.'Control Of Optimum Vitrification In Vitreous And Porcelain Bodies.
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Earlier power wirewound resistors, such as brown vitreous-enameled types, however, were made with a different system of preferred values, such as some of those mentioned in the first sentence of this section.
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The normal growth of the blood vessels is directed to relatively low-oxygen areas of the retina, but the vessels remain in the plane of the retina and do not grow into the vitreous humor. If excess oxygen is given, normal blood vessels degrade and cease to develop. When the excess oxygen environment is removed, the blood vessels rapidly begin forming again and grow into the vitreous humor of the eye from the retina. The key disease element in ROP is fibrovascular proliferation.
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Some injuries can cause blood vessels in the back of the eye to bleed. Trauma is the leading cause of vitreous hemorrhage in young people, and accounts for 12–18.8% of cases in adults.
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During a globe rupture, the outer membranes of the eye are completely or partially compromised, and the vitreous and/or aqueous humour drain through the site of the rupture, causing the eye to 'deflate'.
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Ophthalmic examination may reveal neovascularization (creation of new vessels in the retina), retinal vessel narrowing, retinal vessel cuffing, retinal hemorrhage, or possible vitritis (inflammation of the vitreous body) or choroiditis (inflammation of the choroid).
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Vitreous Humor was formed in Topeka, KS in the late 1980s by Danny Pound, Brad Allen, and Dan Benson. Described by AllMusic as "not easily categorized", the band was often referred to as "emo".
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The length of the shell attains 8 mm. The thin, white shell is vitreous and subpellucid. It contains eight whorls, obtusely narrowly shouldered above, covered by fine spiral striae. The upper whorls are longitudinally ribbed.
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Regular rows of shining gemmae on the costulae at the point of the angular projections take the place of spiral lirae. The interstices are plain, vitreous white. The aperture is circular. The peristome is continuous.
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Kinoite (Handbook of MineralogyKinoite at Webmineral or Ca2Cu2Si3O10·2H2OKinoite at Mindat.org ) is a light blue copper silicate mineral. It is somewhat scarce. It has a monoclinic crystal system, vitreous luster, and is transparent to translucent.
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Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub- adamantine. Its formula is Cu6Si6O18·6H2O (also reported as CuSiO2(OH)2).
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Hilgardite is a borate mineral with the chemical formula Ca2B5O9Cl·H2O. It is transparent and has vitreous luster. It is colorless to light pink with a white streak. It is rated 5 on the Mohs Scale.
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1976 Ostoja exhibited works in vitreous enamel on steel, optical collages, and for the first time in Australia, collages incorporating Kirlian photography. The Premier, Don Dunstan, opened this exhibition at Lidum's Gallery, Adelaide. Ostoja's Theremin 74, using electronics and stainless steel, purchased by the Tasmanian Art Gallery. Ostoja commissioned to produce a large bass relief mural for the new Nauru House, in Melbourne. 1977 Ostoja displayed exhibits of vitreous enamels, optical collages, and kinetics with six lasers at the Australian Galleries Exhibition in Melbourne.
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Jian ware tea bowl with "hare's fur" glaze, southern Song dynasty, 12th century, Metropolitan Museum of Art (see below) Stoneware is a rather broad term for pottery or other ceramics fired at a relatively high temperature.Clay vitrifying temperatures A modern technical definition is a vitreous or semi- vitreous ceramic made primarily from stoneware clay or non-refractory fire clay.Standard Terminology of Ceramic Whiteware and Related Products: ASTM Standard C242. Whether vitrified or not, it is nonporous (does not soak up liquids);Arthur Dodd & David Murfin.
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Prevalence of early and late stages of physiologic PVD in emmetropic elderly population. Schwab C, Ivastinovic D, Borkenstein A, Lackner EM, Wedrich A, Velikay-Parel M. People with myopia (nearsightedness) greater than 6 diopters are at higher risk of PVD at all ages. Posterior vitreous detachment does not directly threaten vision. Even so, it is of increasing interest because the interaction between the vitreous body and the retina might play a decisive role in the development of major pathologic vitreoretinal conditions, such as epiretinal membrane.
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The ciliary body is triangular in horizontal section and is coated by a double layer, the ciliary epithelium. The inner layer is transparent and covers the vitreous body, and is continuous from the neural tissue of the retina. The outer layer is highly pigmented, continuous with the retinal pigment epithelium, and constitutes the cells of the dilator muscle. The vitreous is the transparent, colourless, gelatinous mass that fills the space between the lens of the eye and the retina lining the back of the eye.
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When bleeding or retinal detachment occur, vitrectomy is employed to clear the blood, membranectomy removes scar tissue, and injection of gas or silicone with scleral buckle may be needed to return sight. Diabetics should have an eye exam yearly. Macular holes – the normal shrinking of the vitreous humor with aging can occasionally tear the central retina causing a macular hole with a blind spot blocking sight. Vitreous hemorrhage – bleeding in the eye from injuries, retinal tears, subarachnoid hemorrhages (as Terson syndrome), or blocked blood vessels.
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Berborite is a beryllium borate mineral with the chemical formula Be2(BO3)(OH,F)·(H2O). It is colorless and leaves a white streak. Its crystals are hexagonal to pyramidal. It is transparent and has vitreous luster.
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The length of the shell attains 7.5 mm, its diameter 2.75 mm. This small, yellowish shell is turriculated. The shell contains 16 whorls, including three whorls in the conical protoconch. The apex is sharp and vitreous.
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Multiple complications are known to occur following eye injury: corneal scarring, hyphema, iridodialysis, post-traumatic glaucoma, uveitis cataract, vitreous hemorrhage and retinal detachment. The complications risk is high with retinal tears, penetrating injuries and severe blunt trauma.
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Jordan Ceramic Industries is a manufacturing company in Jordan. It was founded in 1966 and is based in Zarka and Amman. Jordan Ceramic produces floor and wall tiles, and vitreous sanitary ware, i.e. toilets, sinks and showers.
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The length of the shell attains 16 mm, its diameter 4.5 mm. A. brightly coloured species, in shape attenuate-fusiform. The shell contains 11 whorls, with a small, vitreous, bulbous protoconch. The remainder is suturally considerably impressed.
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The change in the coordination increases the ionicity of the Si-O bond. More importantly, any deviations from these standard parameters constitute microstructural differences or variations, which represent an approach to an amorphous, vitreous, or glassy solid.
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The mineral is brownish pink, rose pink or yellowish in color, with a silky to vitreous luster and a nearly white streak. It occurs in semi- transparent fibrous, scaly or lamellar aggregates up to 10 cm across.
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It has vitreous luster. It is not radioactive. Aubertite is rated 2-3 on the Mohs Scale. The sample was collected by J. Aubert (born 1929), assistant director, National Institute of Geophysics, France, in the year 1961.
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Glass solders can be also used as sealants; a vitreous enamel coating on iron lowered its permeability to hydrogen 10 times. Glass solders are frequently used for glass-to-metal seals and glass-ceramic-to-metal seals.
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This artwork was commissioned in 1983, and consists of vitreous enamel panels with brightly coloured geometric shapes. The station was used by 654,624 passengers in 2017–18, making it the thirteenth-most-used station on the network.
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Its luster is vitreous (like glass). Bararite is white to colorless. These properties are similar to halite (NaCl)—which gave the halide group its name. Whereas cryptohalite belongs to the isotropic optical class, bararite is uniaxial negative.
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Confusion, decreased level of consciousness or coma may be present, as may neck stiffness and other signs of meningism. Neck stiffness usually presents six hours after initial onset of SAH. Isolated dilation of a pupil and loss of the pupillary light reflex may reflect brain herniation as a result of rising intracranial pressure (pressure inside the skull). Intraocular hemorrhage (bleeding into the eyeball) may occur in response to the raised pressure: subhyaloid hemorrhage (bleeding under the hyaloid membrane, which envelops the vitreous body of the eye) and vitreous hemorrhage may be visible on fundoscopy.
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Schematic diagram of the human eye Hyaloid canal (Cloquet's canal and Stilling's canal) is a small transparent canal running through the vitreous body from the optic nerve disc to the lens. It is formed by an invagination of the hyaloid membrane, which encloses the vitreous body. In the fetus, the hyaloid canal contains a prolongation of the central artery of the retina, the hyaloid artery, which supplies blood to the developing lens. Once the lens is fully developed the hyaloid artery retracts and the hyaloid canal contains lymph.
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Similar to Parnassius apollo geminus but differs in the vitreous marginal band of the forewing being broken up into elongate arched spots or lunules, and in the hindwing bearing dark marginal and more sharply marked submarginal spots, the latter being developed to large vitreous half moons, especially on the underside. The hindwing above usually with red basal spot, the whole surface of the wing above with a peculiar silky and below a greasy gloss. The female is darker, more conspicuously marked. Shaft of antenna whitish, club black, abdomen whitish, except a small dorsal portion.
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Lens subluxation is also seen in dogs and is characterized by a partial displacement of the lens. It can be recognized by trembling of the iris (iridodonesis) or lens (phacodonesis) and the presence of an aphakic crescent (an area of the pupil where the lens is absent). Other signs of lens subluxation include mild conjunctival redness, vitreous humour degeneration, prolapse of the vitreous into the anterior chamber, and an increase or decrease of anterior chamber depth. Removal of the lens before it completely luxates into the anterior chamber may prevent secondary glaucoma.
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Persistent hyperplastic primary vitreous (PHPV), also known as persistent fetal vasculature (PFV), is a rare congenital developmental anomaly of the eye that results following failure of the embryological, primary vitreous and hyaloid vasculature to regress. It can be present in three forms: purely anterior (persistent tunica vasculosa lentis and persistent posterior fetal fibrovascular sheath of the lens), purely posterior (falciform retinal septum and ablatio falcicormis congenita) and a combination of both. Most examples of PHPV are unilateral and non-hereditary. When bilateral, PHPV may follow an autosomal recessive or autosomal dominant inheritance pattern.
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The exterior of the egg is made of gold and steel— unlike many previous eggs, the exterior had no gemstones set in it anywhere— and was once coated in vitreous enamel, while the interior is made of silk and velvet. The egg stands on a base of jade and is supported by four steel artillery shells. The "surprise" fitting within it is a miniature painting by Vassilii Zuiev on an easel made of gold and steel. The easel is coated in vitreous enamel, and the frame of the painting is lined with diamonds.
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Diagnosis is made by an ophthalmologist or optometrist based on the clinical presentation. One indication can be the Amsler sign, which is the presence of blood (hyphema) in the aspirated vitreous fluid, in paracentesis of the anterior chamber. This is caused due to iris atrophy usually seen in FHI and exposure of the fragile iris vasculature to the vitreous fluid. The sudden change of pressure in the anterior chamber upon suction induced by the paracentesis, or during a cataract surgery, causes bursting of the fragile superficial iris capillaries resultsing in micro-bleeding.
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CEV does not include entoptic phenomena such as "floaters", which are instead caused by opacities in the vitreous humour and often appear as cells or strands in the field of vision. Full-closing and reopening the eyelids creates a very definite wiper-ridge in the tear film that is readily visible. Fully closing and reopening the eyelids also often stirs up the vitreous which settles down after a brief moment due to gravity. The motion of waking-consciousness CEV noise is not so directly and physically controllable and repeatable.
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Bettertonite is a white and translucent mineral. It has a vitreous and silky to pearly luster. It has a calculated density of 2.02 g/cm3. Bettertonite has perfect cleavage on {010}. Bettertonite’s hardness and fracture were not observed.
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Fluorcaphite Fluorcaphite is a mineral with the chemical formula .Fluorcaphite on webmineral.com It is found in the Kola Peninsula in Russia.Fluorcaphite on Handbook of Mineralogy Its crystals are hexagonal (dipyramidal class) and are transparent with a vitreous luster.
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Dr. S Natarajan graduated from the Madras Medical College, Madras, in 1980. He did his Diploma in Ophthalmology (D.O) at University of Madras in 1984 and Fellowship in Retina and Vitreous Surgery (F.R.V.S) at Sankara Nethralaya in 1985.
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It is very brittle. The Mohs scale hardness is 3.5-4. It has a vitreous luster and a white streak. It is found in hydrothermal deposits left in calcareous rocks, often formed as a result of secondary mineralization.
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The length of the shell attains 4.5 mm, its diameter 2 mm. The white, minute shell has an ovate-fusiform shape. It contains 8 whorls, of which two vitreous whorls in the protoconch. The oblique aperture is ovate.
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"The Virgin Mary and Five Standing Saints above Predella Panels", pot-metal and white glass, vitreous paint, silver stain. Rhine Valley, Germany, 1440–46."The Virgin Mary and Five Standing Saints above Predella Panels". Metropolitan Museum of Art.
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Vitrified tile is made by hydraulic pressing a mixture of clay, quartz, feldspar and silica, which make vitreous surface. Thus creating a single mass making them hard with low porosity. Different clay bodies reach vitrification at different temperatures.
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The length of the shell of the shell attains 25 mm, its diameter 7 mm. The white shell has a fusiform shape. It contains 12 whorls, of which two in the protoconch. These two are vitreous and convex.
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Bathytoma viabrunnea (specimen in MNHN, Paris) The solid shell has a fusiform shape. It has a smooth, brown, two-and- a-half-whorled vitreous nucleus. The body whorl has semilunar riblets. And the teleoconch contains eight slightly turreted whorls.
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Eyes open, plugged with vitreous body at tips of eyestalks. Inhalant and exhalant neck lobes present in neck region. Head part and eyestalks brown; black pigmentation present transversely at tip of snout. Foot with three pairs of epipodial tentacles.
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Bentorite is a mineral with the chemical formula Ca6(Cr,Al)2(SO4)3(OH)12·26(H2O). It is colored violet to light violet. Its crystals are hexagonal to dihexagonal dipyramidal. It is transparent and has vitreous luster.
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It is not soluble in water, though it will start dissolving in warm acid. Kurnakovite is usually colorless or white and either transparent or translucent. It has a vitreous, pearly luster and a refractive index of between 1.488 - 1.525.
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It is vitreous in luster and clear to white in color. It has a Mohs hardness of 5 to 5.5 and a low specific gravity of 2.2 to 2.4. The refractive indices are nα=1.505 nβ=1.505 nγ=1.506.
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For instance, Dutch surgeon Anton Nuck (1650–1692) claimed to have removed vitreous by suction in a young man with an inflamed eye. In Boston, John Collins Warren (1778–1856) performed a crude limited vitrectomy for angle closure glaucoma.
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Leifite is generally white or colourless, with a white streak and a silky or vitreous lustre. It occurs as fine needles making up radiating aggregates and rosettes. Individual crystals are deeply striated hexagonal prisms that are transparent to translucent.
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The first two are polished, vitreous and convex. The others are rather convex, keeled above and flattened sloping downwards. The large body whorl is somewhat inflated and contracted towards the base. It contains about 12 strong furrows, longitudinally striated.
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Barrerite is a tectosilicate mineral and a member of the zeolite family. It is one of the rarer zeolites. It was named for Richard Barrer, a New Zealand-born chemist. Barrerite crystal are white to pinkish, with a vitreous-glassy luster.
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The pro-alpha2(XI) chain, however, is not made in the eyes. Instead, another type of collagen chain replaces pro- alpha2(XI) to form type XI collagen in the vitreous of the eye. COL11A2 mutations, therefore, do not affect vision.
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Vitreology is a historic reference to a subspecialised field of ophthalmology and vision science that deals exclusively with the health and disease of the vitreous body within the eye. References to the term vitreology have become less common since the 1970s.
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Zigrasite is an offwhite to pale yellow or light tan in color. Zigrasite exhibits a vitreous luster, and a white streak. The Mohs hardness is 3.The measured( Berman Balance) and calculated densities are 2.76(4) and 2.66 g/cm3 respectively.
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Another significant contribution was the development of stoneware originating in 9th- century Iraq.Mason (1995) p.5 It was a vitreous or semivitreous ceramic ware of fine texture, made primarily from non-refactory fire clay.Standard Terminology Of Ceramic Whiteware and Related Products.
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Proliferative sickle retinopathy is the most severe ocular complication of sickle cell disease. Even though PSCR begins in the first decade of life, the condition remains asymptomatic and unnoticed until visual symptoms occur due to vitreous hemorrhage or retinal detachment.
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Glaucoma secondary to anterior lens luxation is less common in cats than dogs due to their naturally deeper anterior chamber and the liquification of the vitreous humour secondary to chronic inflammation. Anterior lens luxation is considered to be an ophthalmological emergency.
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Perumalsamy Namperumalsamy is an Indian ophthalmologist who specializes in diabetic retinopathy. He is also a retina-vitreous expert. Namperumalsamy is currently the chairman Emeritus of Aravind Eye Hospital, Madurai. He is known for bringing assembly-line efficiency to eye surgery.
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Gwihabaite is a rare ammonium potassium nitrate mineral (NH4,K)(NO3). It is orthorhombic in form, colorless with a vitreous luster. It has a Mohs hardness of 5 and a specific gravity of 1.77. It is deliquescent and water-soluble.
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Vitreous bodies have open porosity, and may be either opaque or translucent. In this context, "zero porosity" may be defined as less than 1% water absorption. However, various standard procedures define the conditions of water absorption.Whitewares: Production, Testing and Quality Control.
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It forms a solid solution series with prismatine. Strongly pleochroic, it appears green or reddish brown when viewed from different directions. It has a vitreous luster. It was first described in 1884 for an occurrence in Fiskernæs in southwest Greenland.
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The size of an adult shell attains 30 mm, its diameter 8 mm. The attenuated, grayish- white shell has a fusiform shape. It contains 11 whorls, of which two in the protoconch. These two apical whorls are vitreous and dark.
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All triclinic minerals are biaxial; cornubite is biaxial (-). Its refractive indices are quite high, close to 1.9, similar to zircon and garnet. It is green, as are many copper minerals, usually translucent, with a vitreous luster and a light green streak.
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Diagnosis of ARN is outlined by the American Uveitis Society. Though most diagnoses of ARN are made by clinical features, a physician may take a vitreous sample and have it tested for herpes markers. Common lab tests that are run on the sample include a viral culture, viral PCR, direct/indirect immunofluorescence, viral antibody measurement. The American Uveitis Society has established the following guidelines for ARN diagnosis: # Retinal necrosis with one or more focus points borders in the peripheral retina # In the absence of antiviral treatment, the condition progresses rapidly # Spreading to the surroundings # Buildup of blood vessels # Inflammation of the vitreous.
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The RPE cells migrate out into the vitreous, proliferate excessively and lay down ECM on both side sides of the detached retina. The ECM laid on the vitreous side of the retina are referred to as epiretinal or preretinal membranes (ERM) and those laid down between the RPE layer and the photoreceptors are referred to as subretinal or retroretinal membranes (SRM) . The two membranes differ in composition in that the ERM is composed of RPE cells, glial cells, macrophages and fibrocytes, while the SRM is rich in RPE cells. The subretinal membranes are of two types.
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Signs of Eales disease include: visible inflammation in the blood vessels in the eyes (vasculitis) and the rupturing of blood vessels (vitreous hemorrhages). There may also be other signs that are identified via eye examination that can show retinal tears and retinal detachment that can lead to disruption of vision and blindness (though this is rare). Epiretinal membranes (ERM) can also be found on patients where the disease has progressed along to retinal detachment, Rubeosis iridis, neovascular glaucoma, cataracts, and optic atrophy. Symptoms of Eales disease include: mild reduction in vision due to vitreous hemorrhages, headaches, dyspepsia, constipation, and epistaxis.
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The length of the shell attains 19 mm, its diameter 5.5 mm. (Original description) The shell is long and slender. It has a pale olive-color with a translucent white tip. It contains 9 whorls, with a smooth vitreous rounded two-whorled protoconch.
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Gaylussite is a carbonate mineral, a hydrated sodium calcium carbonate, formula Na2Ca(CO3)2·5H2O. It occurs as translucent, vitreous white to grey to yellow monoclinic prismatic crystals. It is an unstable mineral which dehydrates in dry air and decomposes in water.
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Hydrokenoelsmoreite is a hydrous tungsten oxide mineral with formula □2W2O6(H2O). Hydrokenoelsmoreite is a colorless to white, translucent isometric mineral. It has a Mohs hardness of 3, exhibits no cleavage and has a splintery fracture. It has a vitreous to adamantine luster.
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Tumchaite occurs as tabular monoclinic crystals, but other habits include massive and granular. The size of individual crystals is approximately 0.2 x 1.2 x 2.5 mm3. It is colorless to white, transparent to translucent. The streak is white and the luster is vitreous.
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"Sensasjonskasserollen" (lit. The sensation casserole) was particularly successful, with 150,000 units sold in 1964. Her designs were often inspired by American art, characterized by clear, plain colors and simple shapes. Kittelsen also designed informal, inexpensive jewelry made from silver and vitreous enamel.
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Depressions in the faience body were filled with coloured "vitreous pastes" and refired, followed by polishing.Egypt and the Ancient Near East, 1987, p. 82, Metropolitan Museum of Art, , 9780870994135, google books Polychrome pieces were usually made by inlaying different colours of paste.
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The surprise is a golden replica of the Imperial Yacht, the Standart Yacht, made of gold and platinum, and coated in vitreous enamel. The model rests on a carved bed of crystal representing the ocean, but can be removed from the egg.
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Marie-Anne Calame (5 May 1775 - 12 October 1834 or 22 October 1834), was a Swiss Vitreous enamel miniaturist and a pietist philanthropist educator. She founded the Asile des Billodes, a famous charity school for orphans and other children in need of help.
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Angiogenesis inhibitors are also used as treatment for the wet form of macular degeneration. By blocking VEGF, inhibitors can cause regression of the abnormal blood vessels in the retina and improve vision when injected directly into the vitreous humor of the eye.
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They are actually clear and colorless due to clarity and their attachment to the vesicular wall. The crystal faces are smooth and planar and have a bright vitreous luster. The crystals have no cleavage. Under a binocular microscope, it resembles chips of ice.
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The length of the shell attains 5 mm, its diameter 2.2 mm. (Original description) The small shell is vitreous white. It is few whorled, the body whorl much the largest. It contains a smooth protoconch of1½ whorl and somewhat more than 3½ subsequent whorls.
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The base of the shell is subconic, slightly constricted for the short siphonal canal. The incremental lines are distinct, stronger on the body whorl. The fasciole is somewhat excavated, smooth except for the curved incremental lines. The surface of the shell is rather vitreous.
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It is found as an isolated mass of hemispheres and spheres clumped together. It has a vitreous to dull luster. It has a hackly to splintery fracture and it has a brittle tenacity. The hardness is about 5-5.5, and the specific gravity is 2.84.
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Retinal neovascularization occurs in 20% of cases within the first 6–12 months of occlusion and depends on the area of retinal nonperfusion. Neovascularization is more likely to occur if more than five disc diameters of nonperfusion are present and vitreous hemorrhage can ensue.
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The length of the shell attains 8 mm, its diameter 3 mm. A small, delicate, white shell with a fusiform shape. It is eight-whorled of which three in the protoconch. The first two are globose and vitreous, the third apical being beautifully cancellate.
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Posterior capsular opacification is common and occurs following up to one in four operations, but these rates are decreasing following the introduction of modern intraocular lenses together with a better understanding of the causes. Vitreous touch syndrome is a possible complication of intracapsular cataract extraction.
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Circumferential scleral buckle is indicated for multiple breaks, anterior breaks and wide breaks. Encircling buckles are indicated for breaks covering more than 2 quadrants of retinal area, lattice degeneration located on more than 2 quadrant of retinal area, undetectable breaks, and proliferative vitreous retinopathy.
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Mannitol is also the first drug of choice to treat acute glaucoma in veterinary medicine. It is administered as a 20% solution intravenously. It dehydrates the vitreous humor and, therefore, lowers the intraocular pressure. However, it requires an intact blood-ocular barrier to work.
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The retina is made up of several layers. The first layer, located adjacent to the vitreous body, is primarily composed of the processes of photoreceptor cells. This layer is approximately 180 um thick. The next layer is characterized by an abundance of dark pigment granules.
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Occlusion amblyopia may be a complication of a hemangioma that blocks some or all of the eye. Other possible causes of deprivation and occlusion amblyopia include obstruction in the vitreous and aphakia. Deprivation amblyopia accounts for less than 3% of all individuals affected by amblyopia.
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Sometimes container factories will offer services such as labelling. Several labelling technologies are available. Unique to glass is the Applied Ceramic Labelling process (ACL). This is screen-printing of the decoration onto the container with a vitreous enamel paint, which is then baked on.
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The length of the shell attains 5 mm, its diameter 2 mm. This is a solid whote shell with a short fusiform shape. It contains 8 whorls of which 2½ smooth, vitreous whorls in the protoconch. The subsequent whorls are much impressed at the suture.
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The length of the shell attains 8 mm, its diameter 2.5 mm. The small shell has a fusiform shape. It contains 8 whorls, of which two or three vitreous and globular whorls in the protoconch. The subsequent ventricose whorls are considerably impressed at the suture.
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The small shell is ovate, vitreous and semitransparent. Its length measures 2.2 mm. The five whorls of the teleoconch form a spire with almost straight sides, slightly rounded, feebly contracted at the suture, appressed at the summit. They are marked only by lines of growth.
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Blue crystals are known under the name tanzanite. It has a vitreous luster and a conchoidal to uneven fracture. When euhedral, zoisite crystals are striated parallel to the principal axis (c-axis). Also parallel to the principal axis is one direction of perfect cleavage.
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Clearcreekite is a carbonate mineral, polymorphous with peterbaylissite. The chemical formula of clearcreekite is Hg1+3CO3(OH)∙2H2O. It has a pale greenish yellow color and streak with tabular subhedral crystals and good cleavage on {001}. It is transparent with vitreous luster and uneven fracture.
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There are many other ailments that show similar symptoms to ED. Differential diagnosis are as follows; retinopathy of prematurity (ROP) sequelae, familial exudative vitreoretinopathy, sarcoidosis, Behçet disease, sickle cell anemia, Terson syndrome, post traumatic vitreous hemorrhage, juvenile diabetes and primary branch retinal vein occlusion.
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Amsler sign also known as Amsler–Verrey sign is the name of the diagnostic finding seen in people with Fuchs heterochromic iridocyclitis (FHI). It is described as presence of blood (hyphema) in the aspirated vitreous fluid, in paracentesis of the anterior chamber, and is caused due to iris atrophy usually seen in FHI and exposure of the fragile iris vasculature to the vitreous fluid. The sudden change of pressure in the anterior chamber upon suction induced by the paracentesis, or during a cataract surgery, causes bursting of the fragile superficial iris capillaries resulting in micro- bleeding. This is one clinical diagnostic sign of FHI.
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The vitreous fluid, along with supporting the lens, also functions in maintaining the shape of the entire vitreous chamber and posterior cavity. It is imperative that the eye remains the proper shape to ensure that the light passing through the lens and the fluid can focus properly on the retina. The composition of the fluid is 99% water and contains no cells, so the light can effectively pass through without it being deflected. The fluid is often thought to be a sort of liquid lens that further focuses the light that has already passed through the lens on the way to towards the retina.
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It is used as an aid in ophthalmic surgery acting as aqueous and vitreous humor, e.g. in cataract extraction (intra- and extracapsular), intraocular lens implantation, corneal transplant, glaucoma filtration, and retina attachment surgery and in the treatment of dry eyes. In surgical procedures in the anterior segment of eyeball, instillation of sodium hyaluronate its viscoelasticity enables maintenance of a deep chamber during surgical manipulation since the solution does not flow out of the open anterior chamber, allowing for efficient manipulation with less trauma to the corneal endothelium and other surrounding tissues. Its viscoelasticity also helps to push back the vitreous face and prevent formation of a postoperative flat chamber.
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This copperplate engraving by Alexander Bannerman, printed in Walpole's Anecdotes, is the only known portrait of the portrait painter Boit. Charles Boit (10 August 1662, in Stockholm – 6 February 1727, in Paris) was a Swedish painter in vitreous enamels who mostly worked in England, Austria and France.
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Alexander and Shea in 1965 reported a family. In the last report, characteristic facies (epicanthus, broad sunken nasal bridge, receding chin) was noted. Genu valgum was present in all. In addition to typical changes in the vitreous, retinal detachment occurs in some and cataract is another complication.
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Barytocalcite often forms oriented growths on baryte, and calcite, witherite and baryte can be epitaxial on barytocalcite. Crystals are normally short to long prismatic and striated. They are transparent to translucent, colourless, white, greyish, greenish or yellowish with a white streak and a vitreous to resinous lustre.
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Epiretinal membrane is typically diagnosed by appearance with optical coherence tomography (OCT) of the macula. Features include a thickening of the nerve fiber layer, a serrated appearance to the surface of the retina just beneath a thickened layer of glial tissue at the retinal-vitreous interface.
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Decreased vision due to vitreous inflammation may occur. Unlike MEWDS, MPC is a chronic disorder and macular scarring contributes to severe visual loss. Theories regarding the cause include an exogenous pathogen sensitizing an individual to antigens within photoreceptors, RPE, or choroid.Polk TD, Goldman EJ. Chorioretinal Inflammatory Syndromes.
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The wingspan is about 54 mm. The forewings are yellowish vitreous strongly opalescent with numerous indistinct crenulate and sinuate transverse darker markings, these latter being almost absent in the basal three-fifths of the wings.Rothschild, W. 1917c. Some new moths of the families Arctiidae and Eupterotidae.
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According to Charles Burnett, Traquair's stall plates are "quite unlike any chivalric stall plates seen before". Working at her home studio in Colinton, Traquair used the champlevé technique, setting vitreous enamel over foil to create shimmering, jewel-like surfaces.Cumming in Blair et al. 2009, pp. 58-59.
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Yangite is colorless, ranging to pale brown when exposed to transmitted light. The mineral has a vitreous luster and streaks white. Yangite maintains a Mohs hardness of five, and demonstrates perfect cleavage along {101}. There is no evidence of twinning or parting within the available specimens.
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Xonotlite is a mineral with the chemical formula Ca6Si6O17(OH)2. It crystallizes in the monoclinic - prismatic crystal system with typically an acicular crystal form or habit. It can be colorless, gray, light gray, lemon white, or pink. It is transparent with a vitreous to silky luster.
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Silverman RH, Ketterling JA, Mamou J, Lloyd HO, Filoux E, Coleman DJ. Pulse-encoded ultrasound imaging of the vitreous with an annular array. Ophth Surg Lasers Imag. 2012;43(1):82-86.Silverman RH. High-resolution ultrasound imaging of the eye. Clin Exp Ophthalmol. 2009;37(1):54-67.
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The length of the shell attains 9 mm, its diameter 4 mm. The small, whitish shell has a broadened fusiform shape. It contains 7 whorls, of which two vitreous and globular whorls in the protoconch. The shell shows a conspicuous central acute angle in the lower whorls.
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Beryllonite is a rare sodium beryllium phosphate mineral with formula NaBePO4. The tabular to prismatic monoclinic crystals vary from colorless to white or pale yellowish, and are transparent with a vitreous luster. Twinning is common and occurs in several forms. It exhibits perfect cleavage in one direction.
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The length of the shell attains 8 mm, its diameter 3 mm. The ovate-fusform shell has a pale reddish to white color. It contains 8 whorls, of which two convex, vitreous whorls in the protoconch. The subsequent whorls are slightly concave and subangulate in their middle.
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Arctite crystals Arctite (Na2Ca4(PO4)3F) is a colourless mineral found in the Kola Peninsula northern Russia.Mineral Handbook It has a Mohs hardness of 5 and has a specific gravity of 3.13. Arctite is transparent with a vitreous lustre. Arctite has a perfect cleavage and a trigonal crystal system.Mindat.
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The length of the shell attains 59 mm. (Original description) The thin shell has a fusiform shape. Its color is white with a very thin straw-colored epidermis. The 1½ whorls in the protoconch are white and vitreous, polished, nearly smooth with faint spiral lines and lines of growth.
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It has a defining Mohs hardness of 3, a specific gravity of 2.71, and its luster is vitreous in crystallized varieties. Color is white or none, though shades of gray, red, orange, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities.
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The elongate-ovate shell is vitreous. Its length measures approximately 3 millimetres. The whorls of the protoconch are smooth, deeply immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are well rounded.
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Visitation; pot metal of various colours, including white glass, black vitreous paint, yellow silver stain, and the "olive-green" parts are enamel. The plant patterns in the red sky are formed by scratching away black paint from the red glass before firing. A restored panel with new lead cames.
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Geigerite is a mineral, a complex hydrous manganese arsenate with formula: Mn5(AsO3OH)2(AsO4)2·10H2O. It forms triclinic pinacoidal, vitreous, colorless to red to brown crystals. It has a Mohs hardness of 3 and a specific gravity of 3.05. It was discovered in Grischun, Switzerland in 1989.
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Foturan can be structured via UV-exposure, tempering and etching: Crystal nucleation grow in Foturan when exposed to UV and heat treated afterwards. The crystalized areas react much faster to hydrofluoric acid than the surrounding vitreous material, resulting in very fine microstructures, tight tolerance and high aspect ratio.
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Mineral wool is also known as mineral fiber, mineral cotton, mineral fibre, man-made mineral fibre (MMMF), and man- made vitreous fiber (MMVF). Specific mineral wool products are stone wool and slag wool. Europe also includes glass wool which, together with ceramic fiber, are completely man-made fibers.
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Hellyerite, NiCO3·6(H2O), is an hydrated nickel carbonate mineral. It is light blue to bright green in colour, has a hardness of 2.5, a vitreous luster, a white streak and crystallises in the monoclinic system. The crystal habit is as platy and mammillary encrustations on its matrix.
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Tachyhydrite is an unstable mineral, a hydrous chloride of calcium and magnesium with formula: CaMg2Cl6·12H2O. It is a rare component of marine evaporite salt deposits. Upon exposure to moist air it rapidly deliquesces and dissolves. It forms a colorless to yellow trigonal crystal with a vitreous luster.
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Taraprasad Das (born 1 April 1950) is an Indian ophthalmologist, who specializes in diseases of the retina and vitreous membrane. He is currently the Vice-Chairman of the L.V.Prasad Eye Institute. He is professor of ophthalmology at the Sun Yet-sen University of Medical Sciences in Guangzhou, China.
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Furthermore, most are very small, typically under 0.5 carats (100 mg) in weight. Their lusters range from vitreous to subadamantine, to almost metallic in the usually opaque melanite, which has been used to simulate black diamond. Some natural spinel is also deep black and could serve this same purpose.
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The length of the shell attains 32 mm, its diameter 10 mm. The tender, dark white shell has a fusiform shape and is almost transparent. The shell contains 9 whorls, of which 1½ smooth, globose and vitreous whorls in the protoconch. The whorls are impressed at the suture.
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The exudate may appear heterogeneous if hemorrhage or fibrosis is present. The subretinal space does not enhance with gadolinium contrast. Mild to moderate linear enhancement may be seen between the exudate and the remaining vitreous. The exudate shows a large peak at 1–1.6 ppm on proton MR spectroscopy.
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Moldavite () is a forest green, olive green or blue greenish vitreous silica projectile rock formed by a meteorite impact probably in southern Germany (Nördlinger Ries Crater) that occurred about 15 million years ago.Earth Impact Database: Ries at www.passc.net/EarthImpactDatabase, Accessed 5 February 2018 It is a type of tektite.
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Cyrilovite is a vitreous translucent mineral that can appear in colors ranging from a bright yellow, honey-yellow, orange to brownish yellow, or brown and it has a hardness of 4. It has a yellow streak. The mineral is classified under the space group P41212 and is tetragonal.
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It also is found in the United States, in Pennsylvania. It appears in burning piles of anthracite (highest grade of coal)—again as a sublimation product. Christie found translucent arborescent (treelike) crystals, with vitreous luster. He found white, opaque lumps that were a mixture of (NH4)2SiF6 with SiO2.
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Duratex operates in Brazil and Colombia. Manufacturing wood products, sanitary vitreous chinaware and metal fittings aimed at the furniture industry and the civil construction sectors, Duratex S.A has ten industrial plants, located in the States of São Paulo, Minas Gerais and Rio Grande do Sul. It is Brazilian market leader in the segment of reconstituted wooden boards – hardboards, particle boards, medium, high and super-density fiberboards (MDF/HDF/SDF), as well as laminated floorboards marketed under the Durafloor brand. It is Brazilian market leader in the segment of sanitary metal fittings, under the Deca and Hydra brands (the latter for flush valves), and has a significant market share in the sanitary vitreous chinaware segment, marketed under the Deca brand.
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P. szechenyi is distinguished by a very broad vitreous margin to the forewing, this band together with the submarginal one forming a broad distal area which is divided by a row of white contiguous half moons proximally sharply bordered with black; costal and hindmarginal spots filled in with pale red, of the costal ones at least the posterior. Hindwing with large, red, white-pupilled ocelli, broad black posterior area strongly irrorated with white, and two large black anal spots with blue filling, from which emanates forward an anteriorly vitreous grey and posteriorly black submarginal band. Underside of a peculiar greasy gloss, somewhat yellowish, most markings only feebly shining through. Shaft of antenna and fringes of wings whitish.
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However, modification of these faces is common, and individual crystal faces may have many more than three edges. Calcite crystallizes in the rhombohedral system, and the most common scalenohedron form has the Miller index [211]. Spar is a general term for transparent to translucent, generally light-colored and vitreous crystalline minerals.
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Corneal foreign body is one of the most common preventable occupational hazard.Onkar A. Commentary: Tackling the corneal foreign body. Indian J Ophthalmol 2020;68:57-8. Intraocular foreign bodies do not cause pain because of the lack of nerve endings in the vitreous humour and retina that can transmit pain sensations.
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Accurate histologic diagnosis is critical for treatment planning and patient counseling. Surgically obtained tissue usually is required to make a histologic diagnosis. For certain tumors, a definitive diagnosis can be accomplished by vitreous aspirate, cerebrospinal fluid (CSF) cytology, or suggested by the presence of certain tumor markers in the CSF.
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For this reason, vitreous oxide coatings – which lack grain boundaries – can retard oxidation.Fehlner, Francis P, ref.3. The conditions necessary, but not sufficient for passivation are recorded in Pourbaix diagrams. Some corrosion inhibitors help the formation of a passivation layer on the surface of the metals to which they are applied.
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Euchroite is a hydrated copper arsenate hydroxide mineral with formula: Cu2AsO4OH·3H2O. It is a vitreous green to emerald green mineral crystallizing in the orthorhombic system. It has a Mohs hardness of 3.5 - 4.0 and a specific gravity of 3.39 - 3.45. It was first described in 1823 in Ľubietová, Slovakia.
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PRG 919 Personal papers of JS Ostoja-Kotkowski. State Library of South Australia. His work included painting (instrumental in developing geometric art in Australia), photography, film-making, theatre design, fabric design, murals, kinetic and static sculpture, stained glass, vitreous enamel murals, op-collages, computer graphics, and laser art.Ostoja-Kotkowski, Stanislaw. 1975.
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Sellaite is a magnesium fluoride mineral with the formula MgF2. It crystallizes in the tetragonal crystal system typically as clear to white vitreous prisms. It may be fibrous and occur as radiating aggregates. It has a Mohs hardness of 5 to 6 and a specific gravity of 2.97 to 3.15.
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The eye in mammals has an extensive laminar organization. There are three main layers – the outer fibrous tunic, the middle uvea, and the inner retina. These layers have sublayers with the retina having ten ranging from the outer choroid to the inner vitreous humor and including the retinal nerve fiber layer.
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Piypite is a rare potassium, copper sulfate mineral with formula: K2Cu2O(SO4)2. It crystallizes in the tetragonal system and occurs as needlelike crystals and masses. Individual crystals are square in cross- section and often hollow. It is emerald green to black in color with a vitreous to greasy luster.
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Both selenite and satin spar are often glassy or vitreous, pearly, and silky – especially on cleavage surfaces. Luster is not often exhibited in the rosettes, due to their exterior druse; nevertheless, the rosettes often show glassy to pearly luster on edges. Gypsum flowers usually exhibit more luster than desert roses.
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This condition is usually unilateral, and its symptoms vary from none to mild blurring and discomfort. Signs include diffuse iris atrophy and small white keratic precipitates (deposits on the inner surface of the cornea), cells presenting in the anterior chamber as well as the anterior vitreous. Glaucoma and cataract occur frequently.
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Endophthalmitis is considered an ophthalmological emergency and requires immediate treatment in many cases. It is treated with injections of antibiotics and antifungal compounds as appropriate. In severe cases a vitrectomy, or removal of vitreous humor, may be required to surgically remove infectious debris. Another complication of intravitreal medication administration is inflammation.
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The mineral peretaite has transparent crystals that are colorless. It has a vitreous luster and perfect {100} cleavage. The density of peretaite was determined by a heavy-liquid method, crystals tend to float in a Clerici solution, which has a density of 4.0 g/cm3, therefore the density is 3.8 g/cm3.
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Thus solid metals are not made of molecules. In glasses, which are solids that exist in a vitreous disordered state, the atoms are held together by chemical bonds with no presence of any definable molecule, nor any of the regularity of repeating unit-cellular-structure that characterizes salts, covalent crystals, and metals.
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Quartz Vitreous minerals have the lustre of glass. (The term is derived from the Latin for glass, vitrum.) This type of lustre is one of the most commonly seen, and occurs in transparent or translucent minerals with relatively low refractive indices. Common examples include calcite, quartz, topaz, beryl, tourmaline and fluorite, among others.
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Multifocal choroiditis and panuveitis (MCP) is an idiopathic inflammatory disorder of unknown etiology affecting the choroid, retina, and vitreous of the eye that presents asymmetrically, most often in young myopic women with photopsias, enlargement of the physiologic blind spot and decreased vision. The first description of the disease was written in 1973.
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Ellsworthite is mostly found in Canada and is amber yellow to dark brown in color. In most cases it has an amber rusty color and has a hardness of about 5.5. The luster is waxy or greasy to vitreous. The outer, more altered parts are relatively high in water and low in uranium.
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Vitreous china is an enamel coating that is applied to ceramics, particularly porcelain, after they've been fired, though the name can also refer to the finished piece as a whole. The coating makes the porcelain tougher, denser, and shinier, and it is a common choice for things like toilets and sink basins.
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Tumchaite, Na2(Zr,Sn)Si4O11•H2O, is a colorless to white monoclinic phyllosilicate mineral. It is associated with calcite, dolomite, and pyrite in the late dolomite-calcite carbonatites. It can be transparent to translucent; has a vitreous luster; and has perfect cleavage on {100}. Its hardness is 4.5, between fluorite and apatite.
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The presence of IL-17 has been proven in a number of ocular diseases associated with neovascularization. Elevated concentration of IL-17 have been shown in vitreous fluid during proliferative diabetic retinopathy. Increased rates of Th17 cells and higher concentrations of IL-17 have been observed in patients with age-related macular degeneration .
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Thorite is commonly metamict and hydrated, making it optically isotropic and amorphous. Owing to differences in composition, the specific gravity varies from 4.4 to 6.6 g/cm3. Hardness is 4.5 and the luster is vitreous or resinous. The color is normally black, but also brownish black, orange, yellowish-orange and dark green.
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It occurs as translucent, vitreous white to grey to yellow monoclinic prismatic crystals. It is an unstable mineral which dehydrates in dry air and decomposes in water. Streptomyces alkalithermotolerans is an alkaliphilic and thermotolerant bacterium species from the genus of Streptomyces which has been isolated from the Lonar soda lake in India.
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Clinoclase is a hydrous copper arsenate mineral, Cu3AsO4(OH)3. Clinoclase is a rare secondary copper mineral and forms acicular crystals in the fractured weathered zone above copper sulfide deposits. It occurs in vitreous, translucent dark blue to dark greenish blue colored crystals and botryoidal masses. The crystal system is monoclinic 2/m.
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The length of the shell attains 7.9 mm, its width 2.7 mm. The elongate-subfusiform shell has a pale pink color and contains 8 whorls, of which two are contained in the vitreous protoconch. The next 5 whorls are bicarinate. Around the middle of each whorl there is a single nodose liration.
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Furthermore, reacting concentrated nitric acid on wood or cotton, Braconnot obtained an inflammable product, xyloïdine (a precursor of collodion and nitrocellulose), which could be transformed into a vitreous varnish. This substance may be considered as the first polymer or plastic material created by a chemist. In 1825, he discovered a structural heteropolysaccharide, pectin.
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In immunocompetent patients, PIOL most commonly affects patients in their fifties and sixties. AIDS patients typically develop the disease earlier in their lives. PIOL affects the sub-retinal pigment epithelium (RPE), can invade into the retina, the vitreous, and the optic nerve. Ophthalmoscopy frequently reveals creamy yellow-to-orange colored subretinal infiltrates.
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Expression of PDGF in particular PDGF-AA is triggered during ocular injury and contributes to PVR pathology. RPE cells express the receptor for hepatocyte growth factor (HGF). HGF stimulates RPE cell migration and its presence is also strongly detected in retinal membranes. Interleukin 6 levels are elevated in the vitreous humor during PVR.
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The St. Petersburg Times contacted five medical experts for their opinions about the report, and they confirmed Wood's opinion. Scientology responded that the five doctors should have been given the entire autopsy report, not just the vitreous fluid tests, which pathologists use to determine the composition of blood at the time before death.
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Talc is translucent to opaque, with colors ranging from whitish grey to green with a vitreous and pearly luster. Talc is not soluble in water, and is slightly soluble in dilute mineral acids.Profiles of Drug Substances, Excipients and Related Methodology, Volume 36 p. 283 Soapstone is a metamorphic rock composed predominantly of talc.
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Patients are often asymptomatic in the initial stages of retinal perivasculitis. Some may develop symptoms such as floaters, blurring vision, or even gross diminution of vision due to massive vitreous hemorrhage. Vision in these patients can be normal to hand movements or light perception only. Bilaterality is quite common (50–90%) in patients.
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Vitrectomy is the common way to treat a macular hole. It is done by placing a gas bubble in the vitreous of the eye which helps flatten the macular hole and holds it in place as the eye heals. The gas bubble slowly shrinks on its own. Treatment is also done using ocriplasmin.
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In birds, saccadic eye movements serve a further function. The avian retina is highly developed. It is thicker than the mammalian retina, has a higher metabolic activity, and has less vasculature obstruction, for greater visual acuity. Because of this, the retinal cells must obtain nutrients via diffusion through the choroid and from the vitreous humor.
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Ianbruceite occurs as aggregates of tiny, radiating, lath-like crystals with a distinctive diamond-shaped outline, up to 0.2 mm across. Material from Tsumeb is blue, ranging from a very pale color to deep blue. Material from the Caldbeck Fells is white to pale pink. The crystals have a vitreous luster and a white streak.
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Kieserite is the magnesium sulfate mineral (MgSO4·H2O) and is named after Dietrich Georg von Kieser (Jena, Germany 1862). It has a vitreous luster and it is colorless, grayish-white or yellowish. Its hardness is 3.5 and crystallizes in the monoclinic crystal system. Gunningite is the zinc member of the kieserite group of minerals.
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Additionally, further research has shown that Müller glia act as light collectors in the mammalian eye, analogous to the fiber optic plate, funneling light to the rod and cone photoreceptors. Aquaporin-4 in Müller cell in rat, transfer water to vitreous body. It was reported that Müller cells can be damaged by niacin overdose.
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In 1996, Spalding Gray (June 5, 1941 - ca. January 10, 2004), an American actor, screenwriter and playwright, released Gray's Anatomy, a film monologue describing his experiences dealing with a macular pucker and his decision to undergo surgery. In the 2011 film Paul, Ruth had Epiretinal membrane complicated by macular edema in her left vitreous cavity.
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The speed of sound varies in different parts of the eye. The eye is divided ultrasonographically into four components:Cornea, Anterior chamber, Lens thickness and Vitreous cavity. The velocity of sound in these compartments are 1620, 1532, 1641, 1532 m/s respectively. Through normal eyes an average velocity of 1555 m/s is accepted for calculation.
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Nevadaite is a pale-green to turquoise colored mineral belonging to the phosphate group. It exhibits a radial crystal habit consisting of prismatic crystals covering areas up to 2 cm. It has a pale-blue streak, a vitreous luster, and is not fluorescent. Nevadaite is in the orthorhombic crystal system and displays conchoidal fracture.
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Common adverse effects of the eye formulation include conjunctival hemorrhage, eye pain, cataract, vitreous detachment, floaters, and ocular hypertension. Zaltrap has adverse effects typical of anti-cancer drugs, such as reduced blood cell count (leukopenia, neutropenia, thrombocytopenia), gastrointestinal disorders like diarrhoea and abdominal pain, and fatigue. Another common effect is hypertension (increased blood pressure).
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Grossly, the tumor appears white, gray, or yellow, with irregular surface, often studded with small cysts. More small cysts may be found on cut sections. These cysts may break off the surface and float freely in aqueous or vitreous humour.FontR, Croxatto J, Rao N. Tumors of the optic nerve and optic nerve head: medulloepithelioma.
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Under President James Pass, O.P.Co. developed a new china body and won the medal for translucent china at the World's Columbian Exposition in Chicago in 1893. In 1897 production turned to the vitreous china body. Its first colored china body, "Old Ivory," appeared in 1926. The company thrived with its hotel and railroad sales.
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It has adamantine, vitreous, resinous and greasy luster and it is transparent. The weak chemical bonding in its structure gives the mineral a low Mohs hardness of around 1.5 and weak forms. It has an imperfect cleavage and its fracture is conchoidal and very brittle. Its specific gravity is measured to be around 3.43.
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Niedermayrite is a rare hydrated copper cadmium sulfate hydroxide mineral with formula: Cu4Cd(SO4)2(OH)6·4H2O. It crystallizes in the monoclinic system and occurs as encrustations and well formed vitreous blue-green prismatic crystals. It has a specific gravity of 3.36. Niedermayrite was named for Gerhard Niedermayr (born 1941), an Austrian mineralogist.
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Takehara lost the belt in his only defeat during his first defense to William Joppy in a 9th-round TKO. He was overwhelmed in the first round and appeared unable to determine incoming attacks. Ringside doctors examination discovered Takehara had posterior vitreous detachment which progressed into retinal detachment and subsequently forced him into retirement.
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Berger JW, Bochow TW, Talamo JH, D'Amico DJ. Measurement and modeling of thermal transients during Er:YAG laser irradiation of vitreous. Lasers Surg Med. 1996;19(4):388-96. 29\. Berger JW, Rubin PA, Jakobiec FA. Pediatric orbital pseudotumor: case report and review of the literature. Int Ophthalmol Clin. 1996 Winter;36(1):161-77. 30\.
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Potassium chloride (also known as KCl or potassium salt) is a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless vitreous crystal appearance. The solid dissolves readily in water, and its solutions have a salt-like taste. It could be obtained from ancient dried lake deposits.
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A toilet's body is typically made from vitreous china, which starts out as an aqueous suspension of various minerals called a slip. It takes about of slip to make a toilet. This slip is poured into the space between plaster of Paris molds. The toilet bowl, rim, tank and tank lid require separate molds.
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The office tower building rises above a five-storey podium block. It has a steel frame and glass curtain walls with metal window frames. Black vitreous enamel panels demarcate the floor levels. The building materials, glass, enamelled steel and aluminium, were chosen so that the building could remain clean in the polluted Manchester atmosphere.
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A hand specimen of tschermakite is green to black in color; its streak will be greenish white. It can be transparent to translucent and has a vitreous luster. Tschermakite shows the characteristic amphibole perfect cleavage on [110]. Its average density is 3.24, with a hardness of 5-6; its fracture will be brittle to conchoidal.
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Santabarbaraite samples, due to pseudomorphism, show elongated and flattened prism habits. The bulk crystal color is brown to light brown and but appears yellow brown when viewed in an optical microscope. The mineral's streak color is also yellow-umber. Santabarbaraite has a vitreous to greasy luster and shows no fluorescence under ultra violet light.
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Grossite is a calcium aluminium oxide mineral with formula CaAl4O7. It is a colorless to white vitreous mineral which crystallizes in the monoclinic crystal system.Mindat.orgWebmineral data Grossite was first described 1994 for an occurrence in the Hatrurim Formation of Israel. It was named for Shulamit Gross (1923–2012) of the Geological Survey of Israel.
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Carletonite is a rare silicate mineral with formula KNa4Ca4(CO3)4Si8O18(F,OH)·(H2O). It is a phyllosilicate and a member of the apophyllite group. Its tetragonal crystals are a translucent blue, white, colorless or pink with a vitreous to dull lustre. It has a density of 2.45 and a hardness of 4-4.5.
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Eye floaters may develop indicating the possibility of the progression of the disease to a point where retinal detachment is a concern. The only variation in the signs and symptoms seems to come from the varying severity of vasculitis and damage done to the eyes from vitreous hemorrhages causing different levels of vision deficiencies.
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Natrolite is readily distinguished from other fibrous zeolites by its optical characteristics. Between crossed nicols the fibers extinguish parallel to their length, and they do not show an optic figure in convergent polarized light. Natrolite is usually white or colorless, but sometimes reddish or yellowish. The luster is vitreous, or, in finely fibrous specimens, silky.
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Tuperssuatsiaite occurs as fan-shaped aggregates up to several centimeters across, as rosettes and as fibers elongated parallel to the c axis. It is red-brown in reflected light, and colorless to light yellowish brown in transmitted light, with a brownish yellow streak. Crystals are transparent with a bright vitreous luster, but aggregates may be dull and translucent.
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The length of the shell attains 9 mm, its diameter 6½ mm. The fusiform shell is grayish-white with red spots within the suture and elongated flammules on the body whorl. The shell contains 10½ whorls of which 1½ in the vitreous, convex protoconch. The whorls of the teleoconch are slightly concave below the distinct suture.
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Amorphous sulfur is the quenched product of sulfur melts above 160 °C (at this point the properties of the liquid melt change remarkably, e.g. large increase in viscosity). Its form changes from an initial plastic form gradually to a glassy form, hence its other names of plastic, glassy or vitreous sulfur. It is also called χ-sulfur.
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These are rounded but much impressed at the sutures. The two almost vitreous whorls in the protoconch are most delicately decussate. The remainder of the whorls are closely obliquely ribbed, crossed by many spirals, slightly gemmulate at the points of junction. This gives a white shining appearance to the ribs, which on the body whorl number about twenty- six.
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Metarauchite exhibits yellow to light greenish-yellow crystals, up to 0.8 mm in size, these crystals are transparent to translucent and display vitreous to pearly luster. It exhibits a hardness of 2 on the Moh's Hardness Scale. Displays thick tabular crystals, with a prevalent pinacoid (011). Metarauchite is very brittle and shows perfect cleavage along the {011} plane.
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The length of the shell attains 6 mm, its diameter 2.5 mm. (Original description) A beautiful species, by the description and figure allied to Daphnella varicosa (Souverbie & Montrozier, 1874) from the same region. There are, however, no signs of varices. The shell is pure delicate white, with seven or eight whorls, of which three are apical and vitreous brown.
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Serpierite is a sky-blue coloured mineral, with a white or almost white streak and a vitreous lustre, pearly on cleavages. It is transparent, and appears greenish-blue in transmitted light. No large crystals have been found. It occurs as tufts and crusted aggregates of lath-like or bladed crystals typically less than 1 mm long.
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After an acute flare-up, no clinical signs of disease may be seen for a prolonged period, which can vary from a few hours to a few years. With frequent acute incidents, though, additional clinical signs may be seen, including anterior and posterior synechiae, poor pupillary responses, cataracts, and a cloudy appearance to the vitreous humour.
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The gene involved helps regulate how the body makes collagen, a sort of chemical glue that holds tissues together in many parts of the body. This particular collagen gene only becomes active in the jelly-like material that fills the eyeball; in Wagner's disease this "vitreous" jelly grabs too tightly to the already weak retina and pulls it away.
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Alarsite (AlAsO4) is an aluminium arsenate mineral with its name derived from its composition: aluminium and arsenate.Handbook of Mineralogy It occurs as brittle subhedral grains which exhibit trigonal symmetry. It has a Mohs hardness of 5-5.5 and a specific gravity of 3.32. It is semitransparent, colorless with pale yellow tints and shows a vitreous luster.
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The conus papillaris is a feature of the reptilian eye which originates from the ventro-temporal optic nerve head and rises into the vitreous. It is believed to supply retinal nutrition. It is similar in function to the avian pecten oculi. It is functionless in adult crocodilians, and has been almost entirely replaced by other structures in most snakes.
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Donnayite crystals tend to be small and the color is commonly pale yellow to yellow with a white streak and a vitreous luster. Donnayite crystals usually display trigonal or hexagonal symmetry and have a hardness of 3. Twinning is extremely common in this mineral. Minerals closely related to donnayite include synchysite, calcite, sphalerite, microcline, and analcime.
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As well as for its beer, the pub is also known for its decor including a ceiling decorated with vitreous enamelled iron plates. The pub has been designated a Grade II listed building. Two old landmarks of Netherton can now be viewed only in the Black Country Living Museum. These include Harold Emile Doo's chemist shop and Providence Church.
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Optoelectronic terahertz is used in ultra-sensitive spectroscopic analysers, thickness measurements of polymers and for the detection of multilayer coatings in the automotive industry. On the other hand there is a huge benefit of specific InP lasers because they are eye safe. The radiation is absorbed in the vitreous body of the human eye and cannot harm the retina.
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Eglinton station in Toronto. Pigmented structural glass was originally marketed under the name "Sani Onyx" by Marrietta Manufacturing. The company also used the name "Sani Rox", while the term "vitreous marble" was coined by the firm as a general descriptive. By 1906, the Pittsburgh Plate Glass Company had developed its own pigmented structural glass, which it called "Carrara glass".
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They are small snails (6 to 8 mm in length) with a thin, vitreous shell that is elongated and has a pointed spire with a smooth tip. The number of the whorls varies between 9 and 12. The shell is sculptured with low axial ribs. Each whorl is marked by two spiral ribs with sharp nodules.
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It crystallizes in the monoclinic-prismatic crystal system. It occurs as transparent to translucent orange-brown aggregates of subparallel acicular crystals up to 10 mm in length, and as patches of yellow, fibrous crystals. It has a white to very pale yellow streak and vitreous luster. It is brittle, with distinct {100} and {001} cleavages, and a conchoidal fracture.
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Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. It causes a loss of accommodation, high degree of farsightedness (hyperopia), and a deep anterior chamber. Complications include detachment of the vitreous or retina, and glaucoma. Babies are rarely born with aphakia.
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Mirabilite, also known as Glauber's salt, is a hydrous sodium sulfate mineral with the chemical formula Na2SO4·10H2O. It is a vitreous, colorless to white monoclinic mineral that forms as an evaporite from sodium sulfate-bearing brines. It is found around saline springs and along saline playa lakes. Associated minerals include gypsum, halite, thenardite, trona, glauberite, and epsomite.
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Langite usually occurs as druses of small greenish-blue crystals which may be scaly or earthy. It is translucent, with a vitreous to silky luster and a blue-green streak. It has perfect cleavage perpendicular to the c crystal axis, and distinct cleavage perpendicular to b. Twinning is common, and typically repeated to give snowflake or star shaped groupings.
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Specifically, the eye is derived from the neuroepithelium, surface ectoderm, and the extracellular mesenchyme which consists of both the neural crest and mesoderm. Neuroepithelium forms the retina, ciliary body, iris, and optic nerves. Surface ectoderm forms the lens, corneal epithelium and eyelid. The extracellular mesenchyme forms the sclera, the corneal endothelium and stroma, blood vessels, muscles, and vitreous.
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Perhamite can range in color from white to brown and can be translucent to opaque. Its luster is said to be earthy, but vitreous to pearly along fractures. It occurs as radial discoidal, platy hexagonal crystals, in rough spherules up to 1mm thick. The specific gravity of perhamite is measured at 2.64 with a calculated density of 2.53.
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The vitreous-white, very minute shell has a discoidal shape and a flat spire. The shell is smooth and perforate with some growth lines. The protoconch consists of one whorl, rather large and with a bulbous shape.H.J. Finlay, Additions to the Recent Molluscan Fauna of New Zealand; Transactions and Proceedings of the Royal Society of New Zealand v.
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Its crystals are in the tetragonal crystal system, appearing as dipyramidal pseudo-octahedra. Colors include golden yellow, brownish green to dark brown, pinkish to reddish gray, orange and colorless. Transparency ranges from translucent to transparent and crystal faces are highly lustrous (vitreous to adamantine). Scheelite possesses distinct cleavage and its fracture may be subconchoidal to uneven.
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Buddingtonite is an ammonium feldspar with formula: NH4AlSi3O8 (note: some sources add 0.5H2O to the formula). It forms by hydrothermal alteration of primary feldspar minerals. It is an indicator of possible gold and silver deposits, as they can become concentrated by hydrothermal processes. It crystallizes in the monoclinic crystal system and is colorless to white with a vitreous luster.
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It has a yellow or white streak and a yellow, green, brown or red color. Its lustre is adamantine, vitreous and resinous, and it has conchoidal, brittle and sectile fracture. Pharmacosiderite has an isometric crystal system, with yellowish-green, sharply defined cube crystals. Its crystals are doubly refracting, and exhibit a banded structure in polarized light.
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Kankite is a monoclinic mineral, meaning it is a mineral system having 3 unequal axes of which one is at right angles with the other two. It has an uneven fracture and has a hardness of 2–3 (gypsum–calcite). It is translucent yellowish green in color with a grayish-yellow streak. Its luster is dull to vitreous.
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The word "glasses" (a set of corrective lenses to improve eyesight) is plurale tantum. In contrast, the word "glass"-- either a container for drinks (a count noun) or a vitreous substance (a mass noun)-- may be singular or plural. Some words, such as "brain" and "intestine", can be used as either plurale tantum nouns or count nouns.
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The pupiform shell is vitreous. The length of the shell reaches 3 mm. The whorls of the protoconch are large, obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The six whorls of the teleoconch are flattened, slightly excurved at the shouldered summit, strongly contracted at the sutures.
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It is composed of a vitreous, light pink, steel gray or brown, locally arkosic, fine to coarse-grained, resistant quartzite. Pebble conglomerate is common at the base of the formation. Locally, where the unit is less than 10 ft thick, it is a fine- to medium- grained, gray, pyritic quartzite, grading into a dark-gray dolomitic sandstone.
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The ovate shell is vitreous, translucent. Its length measures 3.3 mm. The whorls of the protoconch are deeply, very obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The four whorls of the teleoconch are inflated, slightly contracted at the suture, appressed at the summit,.
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Pagel: Biographical Dictionary excellent doctors of the nineteenth century. Berlin, Vienna, 1901, col 325-326. In the fields of anatomy and histology, he is known for studies involving the finer structure of the eye (microscopic investigations of the conjunctiva, cornea and vitreous). He also made contributions involving research of peripheral nerve fiber terminations in vertebrates (e.g.
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Beresford Hope Cross - circa 9th century Empress Zoë from Monomachus crown - early 11th century The craft of cloisonné enameling is a metal and glass- working tradition practiced in the Byzantine Empire from the 6th to the 12th century AD. The Byzantines perfected an intricate form of vitreous enameling, allowing the illustration of small, detailed, iconographic portraits.
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Tsumebite is an emerald-green color, transparent and green in transmitted light, with a green streak and an adamantine (diamond-like) to vitreous (glassy) luster. It is biaxial (+) with refractive indices Nx = 1.885 to 1.900, Ny = 1.920 and Nz = 1.942 to 1.956. It is faintly pleochroic with X = Y = very pale blue to colorless and Z = robin's-egg-blue.
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Langbeinite is a potassium magnesium sulfate mineral with the chemical formula K2Mg2(SO4)3. Langbeinite crystallizes in the isometric-tetartoidal (cubic) system as transparent colorless or white with pale tints of yellow to green and violet crystalline masses. It has a vitreous luster. The Mohs hardness is 3.5 to 4 and the specific gravity is 2.83.
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Kulongski announced May 8, 2007 that Oregon will join the Climate Registry to track dangerous greenhouse gas emissions.Governor Ted Kulongoski Press Release Kulongoski signed two LGBT rights bills into law: a domestic partnership bill and an anti-discrimination bill at a ceremony May 9, 2007.Basic Rights Oregon » Blog Archive » Kulongoski Signs Domestic Partnerships and Anti-Discrimination Kulongoski signing the Jobs and Transportation Act, 2009 In May 2010, Kulongoski suffered a vitreous hemorrhage in the eye due to fragile, abnormal blood vessels that have grown in the retina of the eye. According to Kulongoski spokeswoman Anna Richter Taylor, he was scheduled for outpatient surgery at Oregon Health & Science University on June 30, 2010 to surgically remove the vitreous gel from the middle of the eye so full vision can be restored.
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Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the color variations.
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The building contains also a sacristy, baptistry lounge and kitchen in the basement. The church was designed by architect Finn Bryn. The altarpiece is a glass mosaic with metal and a gold-plated field created by Veslemøy Nystedt Stoltenberg in 1995. There is a large cross that is made of brass with turquoise, molded pieces of vitreous enamel at the side wall.
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In 1938 Hans Wagner described 13 members of a Canton of Zurich family with a peculiar lesion of the vitreous and retina. Ten additional affected members were observed by Boehringer et al.. in 1960 and 5 more by Ricci in 1961. In the Netherlands Jansen in 1962 described 2 families with a total of 39 affected persons. Both families had only ocular features.
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Brianyoungite (white) with fluorite and sphalerite from the Brownley Hill Mine, Cumbria, England. The mineral occurs as tiny rosettes less than 100 µm across, composed of thin blades just one or two micrometers across, elongated parallel to the b crystal axis, and tapering to a sharp point. The crystals are white and transparent to translucent, with a vitreous lustre and a white streak.
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The typical wheels on most bench grinders are vitreous-bond wheels. They work best to do their intended task, but they inherently have a risk of cracking. Grinding wheels designed for steel are not to be used for grinding softer metals, like aluminium. The soft metal gets lodged in the pores of the wheel and later expands with the heat of grinding.
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At temperatures above 1100 °C kyanite decomposes into mullite and vitreous silica via the following reaction: 3(Al2O3·SiO2) → 3Al2O3·2SiO2 \+ SiO2. This transformation results in an expansion. Its name comes from the same origin as that of the color cyan, being derived from the Ancient Greek word κύανος. This is generally rendered into English as kyanos or kuanos and means "dark blue".
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Parascorodite occurs in aggregates of somewhat hemispherical shapes. The aggregates grow to be about 2 cm across, consisting of extremely small crystals that can be arranged in fan-like or irregular masses. Parascorodite is cryptocrystalline, and has a luster that can vary from earthy to vitreous. It is a soft mineral, falling between 1-2 on the Mohs hardness scale.
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The European Union and Germany classify synthetic vitreous fibers as possibly or probably carcinogenic, but fibers can be exempt from this classification if they pass specific tests. Evidence for these classifications is primarily from studies on experimental animals and mechanisms of carcinogenesis. The glass wool epidemiology studies have been reviewed by a panel of international experts convened by the IARC.
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Review of the U.S. Navy's Exposure Standard for Manufactured Vitreous Fibers. National Academy of Sciences, National Research Council, Washington, D.C.: National Academy Press. and Harvard's Medical and Public Health Schools which reached the same conclusion as IARC that there is no evidence of increased risk from occupational exposure to glass wool fibers. Fiberglass will irritate the eyes, skin, and the respiratory system.
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The length of the shell attains 9mm, its diameter 3.25 mm This is a peculiarly milky white, oblong-gradate species. It contains eight whorls of which two vitreous whorls in the protoconch. The sculpture is, as in most Daphnella, elaborately cancellate as regards the protoconch. The whorls next to this are irregularly varicose-costate, and are crossed by delicate non- gemmuled spirals.
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The ciliary body is a ring-shaped thickening of tissue inside the eye that divides the posterior chamber from the vitreous body. It contains the ciliary muscle, vessels, and fibrous connective tissue. Folds on the inner ciliary epithelium are called ciliary processes, and these secrete aqueous humor into the posterior chamber. The aqueous humor then flows through the pupil into the anterior chamber.
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Boyce Lundstrom: Kiln Firing Glass. Vitreous Publications; Colton, Oregon 1983, Fusing was the primary method of making small glass objects for approximately 2,000 years, until the development of the glass blowpipe. Glassblowing largely supplanted fusing due to its greater efficiency and utility. While glass working in general enjoyed a revival during the Renaissance, fusing was largely ignored during this period.
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With posterior lens luxation, the lens falls back into the vitreous humour and lies on the floor of the eye. This type causes fewer problems than anterior lens luxation, although glaucoma or ocular inflammation may occur. Surgery is used to treat dogs with significant symptoms. Removal of the lens before it moves to the anterior chamber may prevent secondary glaucoma.
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In most countries high-level radioactive waste has been incorporated into alkali borosilicate or phosphate vitreous waste forms for many years; vitrification is an established technology.M. I. Ojovan and W.E. Lee. An Introduction to Nuclear Waste Immobilisation, Elsevier, Amsterdam, 315 p. (2005) Vitrification is a particularly attractive immobilization route because of the high chemical durability of the vitrified glass product.
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Zincobotryogen is a hydrous sulfate mineral with formula (Zn,Mg,Mn)Fe3+(SO4)2(OH)·7H2O. It forms bright orange red monoclinic prismatic crystals that exhibit a vitreous to greasy luster. Its specific gravity is 2.201 and it has a Mohs hardness of 2.5. It is a rare secondary mineral which forms in arid climates by alteration of other zinc minerals.
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Vitreolina is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the Eulimidae family. This genus was first described by Monterosato in 1884. He proposed it as a section in the family Eulimidae for some of the Mediterranean species. It contains the small vitreous species without internal varices, with curved spire and slightly obtuse apex.
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Specific gravity of rocks is determined by use of a balance and pycnometer. It is greatest in rocks containing the most magnesia, iron, and heavy metal while least in rocks rich in alkalis, silica, and water. It diminishes with weathering. Generally, the specific gravity of rocks with the same chemical composition is higher if highly crystalline and lower if wholly or partly vitreous.
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Kutnohorite may be white, pale pink or light brown. The pink shades are due to increased manganese and the brown colours are due to increased iron content. The mineral is translucent with a white to pale pink streak and vitreous to dull luster. It is uniaxial (-) with refractive indices No = 1.710 to 1.727 and Ne = 1.519 to 1.535, similar to dolomite.
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Internationale Biennale der Papierkunst. Exh. cat., Leopold-Hoesch- Museum der Stadt Düren, 1988, p. 32. In the same year and during the early and mid-1970s, Schult produced Biokinetic Situations, exhibited at the Museum Morsbroich in Leverkusen and the documenta V in Kassel, installed either on the floors of the museums or within large vitreous display cases, also called "picture boxes".
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The Romanov Tercentenary egg is made of gold, silver, rose-cut and portrait diamonds, turquoise, purpurine, rock crystal, Vitreous enamel and watercolor painting on ivory. It is in height and in diameter. The egg celebrates the tercentenary of the Romanov dynasty, the three hundred years of Romanov rule from 1613 to 1913. The outside contains eighteen portraits of the Romanov Tsars of Russia.
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In more severe cases, vitreous fluid may seep under the tear, separating the retina from the back of the eye, creating a retinal detachment. Trauma can be any form from a blunt force trauma to the face such as a boxer's punch or even in some cases has been known to be from extremely vigorous coughing or blowing of the nose.
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Wardite is a hydrous sodium aluminium phosphate hydroxide mineral with formula: NaAl3(PO4)2(OH)4·2(H2O). Wardite is of interest for its rare crystallography. It crystallizes in the tetragonal trapezohedral class and is one of only a few minerals in that class. Wardite forms vitreous green to bluish green to white to colorless crystals, masses, and fibrous encrustations.
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The vitreous shell has a conic shape. Its length measures 3.4 mm. The whorls of the protoconch are small, smooth, obliquely deeply immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are flattened, strongly contracted at the periphery and moderately shouldered at the summit.
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The vitreous shell has an ovate shape. Its length measures 2.5 mm. The whorls of the protoconch are large, deeply immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects, which is marked by five slender spiral threads. The five whorls of the teleoconch are rounded on all but the first whorl.
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Without treatment permanent loss of vision may occur. The mechanism most commonly involves a break in the retina that then allows the fluid in the eye to get behind the retina. A break in the retina can occur from a posterior vitreous detachment, injury to the eye, or inflammation of the eye. Other risk factors include being short sighted and previous cataract surgery.
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The myopic crescent is commonly seen in pathological axial myopia. The condition sometimes described erroneously as myopic choroiditis, but myopic crescent is not an inflammatory process and does not run parallel to the degree of myopia. It usually tends to occur after mid adult life. Myopic crescent is often associated with some degree of retinal degeneration and occasionally vitreous degeneration.
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The nomination includes the original "No. 10" vitreous enamel plate issued by the RTA in 1910 (a single plate was affixed to the rear of the vehicle in 1910) and the replacement set of "No. 10" embossed steel plates issued in 1937 (by the 1920s two "plates" were being used. The plates have been in continuous use by the NSW FB since 1910.
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The elongate-ovate shell is vitreous. Its length measures 3.5 mm. The whorls of the protoconch are small, obliquely immersed in the first of the succeeding turns, above which projects the tilted edge which is marked with five raised spiral lirations. The five whorls of the teleoconch are somewhat inflated, well rounded, moderately contracted at the sutures, strongly slopingly shouldered at the summit.
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The length of the shell attains 5 mm, its diameter 2 mm. (Original description) This small, slightly fusiform species is remarkable for the peculiar truncate apex, the pleurotomoid labral sinus, and the columellar plaits being two only in number. Its color is white, sometimes rose-tinged. The shell contains 6 slightly convex whorls, including 2 vitreous whorl in the protoconch.
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Jerrygibbsite, in pure form, is a violet-pink mineral with a light pink streak. It has a calculated density of 4.045 g/cm3, and a tested density of 4.00 g/cm3, agreeing favorably, since measurements used to test density have few significant figures. It has a hardness of about 5.5, that of a knife blade. The general luster is vitreous, or shiny.
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Its proximal portion remains as the central artery of the retina. Regression of the hyaloid artery leaves a clear central zone through the vitreous humor, called the hyaloid canal or Cloquet's canal. Cloquet's canal is named after the French physician Jules Germain Cloquet (1790–1883) who first described it. Occasionally the artery may not fully regress, resulting in the condition persistent hyaloid artery.
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Semiconductors are usually studied in a photoelectrochemical cell. Different configurations exist with a three electrode device. The phenomenon to study happens at the working electrode WE while the differential potential is applied between the WE and a reference electrode RE (saturated calomel, Ag/AgCl). The current is measured between the WE and the counter electrode CE (carbon vitreous, platinum gauze).
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Large natural crystals of stishovite are extremely rare and are usually found as clasts of 1 to 2 mm in length. When found, they can be difficult to distinguish from regular quartz without laboratory analysis. It has a vitreous luster, is transparent (or translucent), and is extremely hard. Stishovite usually sits as small rounded gravels in a matrix of other minerals.
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Aerinite from Spain Aerinite (Ca4(Al,Fe,Mg)10Si12O35(OH)12CO3·12H2O) is a bluish-purple inosilicate mineral. It crystallizes in the monoclinic system and occurs as fibrous masses and coatings. It has a dark, vitreous luster, a specific gravity of 2.48 and a Mohs hardness of 3. It is a low-temperature hydrothermal phase occurring in zeolite facies alteration of mafic rocks.
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The luster is vitreous. It was named chabasie in 1792 by Bosc d'Antic and later changed to the current spelling. Chabazite occurs most commonly in voids and amygdules in basaltic rocks. Chabazite is found in India, Iceland, the Faroe Islands, the Giants Causeway in Northern Ireland, Bohemia, Italy, Germany, along the Bay of Fundy in Nova Scotia, Oregon, Arizona, and New Jersey.
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The original "vermillion vitreous porcelain edged [sign] with a double row of red neon tubes" was replaced with solely red tubes. Around four thousand feet of neon tubing was used in the renovation. The sign can be seen from almost 75 miles away from the air at night and 20 miles away on a clear day."First National Bank Building " CapitolRiver District Council.
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Crystals reach a maximum size of about one centimeter. The nodules are white with fine grey or black veins in an erratic, often web-like pattern, opaque with a sub-vitreous luster. The crystals at Iona are colorless, white or brown and are often translucent or transparent. Its structure is monoclinic with a Mohs hardness of 3.5 and lacks regular cleavage.
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In the eyes of most mammals, birds, reptiles, and most other terrestrial vertebrates (along with spiders and some insect larvae) the vitreous fluid has a higher refractive index than the air. In general, the lens is not spherical. Spherical lenses produce spherical aberration. In refractive corneas, the lens tissue is corrected with inhomogeneous lens material (see Luneburg lens), or with an aspheric shape.
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The large shell is elongate-oval and vitreous. Its length measures 5 mm. The whorls of the protoconch are small, smooth, deeply obhquely immersed in the first post-nuclear turn, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are strongly rounded, decidedly contracted at the sutures and strongly shouldered at the summit.
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The elongate-conic shell is vitreous. It measures 2.8 mm. The whorls of the protoconch are small, smooth, and almost completely obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are flattened, strongly contracted at the sutures and moderately shouldered at the summit.
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The mural was designed by public artist Rob Turner, and created by him with fellow artist Gary Drostle. The artists had presented the borough's Public Arts Committee with six designs, and the Committee chose one, depicting local history in nineteen panels. Appledown Properties Ltd provided the financing. The mosaic was created from vitreous ceramic tesserae and put in place in 1994.
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The elongate-conic shell is vitreous. It measures 2.3 mm. The nuclear whorls are obliquely immersed in the first post-nuclear turn, above which only the tilted edge of the last volution projects, which is marked by five slender spiral threads. The five post-nuclear whorls are well rounded, moderately contracted at the sutures, strongly slopingly shouldered at the summit.
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It is a small damselfly with black head and big eyes. Its thorax is black with pink marks on the dorsum and yellow stripes on the lateral sides. Its fore-wings are transparent with outer fourth opaque in bright copper colors. Hind-wings are with outer third opaque, marked with two series of vitreous spots which glow with a copper or violet reflex.
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Large stock pots may be used at home to boil clothing, wool or yarn for colour dying, for example. They do not come in standard sizes. The size of the pot is normally given on the manufacturer's label by volume, for example 12 litres. The most common materials for manufacturing stock pots are stainless steel, aluminium, copper and enamel (Vitreous enamel) on metal.
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Campigliaite crystals are transparent with a vitreous luster. Crystals of campigliaite and gypsum are often mixed but small amounts of pure crystals appear to grow on gypsum. Campigliaite crystals are flattened on the {100} and elongated on the [010]. These crystals are light or pale blue in color but under light transmission, the crystal color changes to pale greenish blue.
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The art of vitreous enameling is an ancient practice with origins that are hard to pinpoint.Wessel p.11 There are a few places that Byzantine craftsmen could have picked up the technique. Enameling is thought to have existed in an early form in ancient Egypt, where examples of gold ornaments containing glass paste separated by strips of gold have been found in tombs.
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The color of eveslogite is yellow or rather light brown. In addition, it is a semitransparent mineral that has a white streak and a vitreous luster. Its crystal system is monoclinic and possesses a hardness (Mohs) of 5. This newly discovered mineral belongs to the astrophyllite group of minerals and contains structures that are composed of titanosilicate layers (Krivovichev et al.
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Prehnite is brittle with an uneven fracture and a vitreous to pearly luster. Its hardness is 6-6.5, its specific gravity is 2.80-2.90 and its color varies from light green to yellow, but also colorless, blue, pink or white. In April 2000, rare orange prehnite was discovered in the Kalahari Manganese Fields, South Africa. Prehnite is mostly translucent, and rarely transparent.
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Datolite is a calcium boron hydroxide nesosilicate, CaBSiO4(OH). It was first observed by Jens Esmark in 1806, and named by him from δατεῖσθαι, "to divide," and λίθος, "stone," in allusion to the granular structure of the massive mineral. Datolite crystallizes in the monoclinic system forming prismatic crystals and nodular masses. The luster is vitreous and may be brown, yellow, light green or colorless.
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Strunzite (Mn2+Fe3+2(PO4)2(OH)26H2O) is a light yellow mineral of the strunzite group, first discovered in 1957. It crystallizes in the triclinic system and has a light, vitreous luster, a specific gravity of 2.52 and a Mohs hardness of 4. Associated minerals include beraunite, quartz and strengite. It is named after Hugo Strunz, a Professor of Mineralogy at Technical University, Berlin.
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Founded in 1824 by Alexandre Brongniart, director of the Manufacture nationale de Sèvres, under the name of Ceramic and Vitric Museum. Anxious to present the history of the techniques of ceramics and vitreous materials, through the world and eras, the latter was one of the collections of ceramics of the most varied. The Museum brings together an exceptional selection of pottery, ceramics and porcelain.
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Wiluite is a dark green, brownish, or black blocky silicate mineral with formula: Ca19(Al,Mg,Fe,Ti)13(B,Al,[ ])5Si18O68(O,OH)10. It has a Mohs hardness of 6 and a specific gravity of 3.36. It has a vitreous lustre, poor cleavage and an irregular brittle fracture. It crystallizes in the tetragonal system and occurs as well-formed crystals with good external form.
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During both periods, tiles were made across Western Europe, though the centre of tile production was in England. Companies in the United States also made encaustic tile during the Gothic Revival architecture style's period. The American Encaustic Tiling Company of Zanesville, Ohio, was active until 1935. However, in the 1930s, encaustic tiling began to lose ground to more affordable glass and vitreous glass tiles.
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Vlasovite is colorless, pink, pale brown or silvery in reflected light and colourless in transmitted light. The border zones of large grains are light brown due to dust-like inclusions. It is transparent to translucent, with a white streak and greasy luster, vitreous to pearly on cleavage surfaces. The refractive indices are Nx = 1.607, Ny = 1.623 and Nz = 1.628, similar to those of muscovite.
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Opticin is a protein that in humans is encoded by the OPTC gene. Opticin belongs to class III of the small leucine-rich repeat protein (SLRP) family. Members of this family are typically associated with the extracellular matrix. Opticin is present in significant quantities in the vitreous of the eye and also localizes to the cornea, iris, ciliary body, optic nerve, choroid, retina, and fetal liver.
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Piemontite is a sorosilicate mineral in the monoclinic crystal system with the chemical formula Ca2(Al,Mn3+,Fe3+)3(SiO4)(Si2O7)O(OH). It is a member of the epidote group.Mindat reference page for Piemontite Red to reddish-brown or red-black in colour, Piemontite has a red streak and a vitreous lustre. The type locality is the Prabornaz Mine, in Saint-Marcel, Aosta Valley, Italy.
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Gallium lanthanum sulfide glasses use essentially non-volatile components La2S3, La2O3 and Ga2S3 to form the basic glass with glass modifiers added as needed. This allows melting in an open atmosphere, under a flowing inert gas, typically argon. Batches of the compounds are prepared in a nitrogen-purged glovebox, placed in a vitreous carbon crucible and transferred to a silica tube furnace in a sealed vessel.
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Silicone has many applications like silicone oil used to replace the vitreous humor following vitrectomy, silicone intraocular lenses following cataract extraction, silicone tubes to keep a nasolacrimal passage open following dacryocystorhinostomy, canalicular stents for canalicular stenosis, punctual plugs for punctual occlusion in dry eyes, silicone rubber and bands as an external tamponade in tractional retinal detachment, and anteriorly located break in rhegmatogenous retinal detachment.
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The small, vitreous shell has a very elongate-ovate shape. Its length measures 2 mm. The whorls of the protoconch are smooth, and deeply obliquely immersed in the first of the succeeding turns, above which the tilted edge of the last volution only projects. The 5½ whorls of the teleoconch are slightly rounded, moderately contracted at the periphery and well shouldered at the summit.
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The luster is vitreous to greasy. It is a rare secondary mineral formed by hydration or alteration of the primary nickel and iron bearing minerals, chromite, pentlandite, pyrrhotite, and millerite, during the serpentinization of ultramafic rocks. Hellyerite, NiCO3·6H2O, is a related mineral. It was found originally in Galicia, Spain in 1851, and named after Spanish diplomat and dramatist Antonio Gil y Zárate (1793–1861).
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The abdomen is dark brown, with the first and second segments above and underside covered with grey hairs, and also a whitish pregenital band of hair. The wings are vitreous (transparent) with light brown veins. The legs are brown and have fine grey velvety hairs. Adult cicadas emerge from September and can be seen until the end of April, though are most abundant in December and January.
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The rock types are; vitreous quartzite, sericitic quartzite, and siltite-argillite. The ore bodies at USSC's property occur as steeply dipping fissure filling veins. The veins cut through the rocks of the Revett Formation and are found along major fracture systems and major faults. The veins generally strike east west and northeast southwest and range in thickness from a few inches to over fifteen feet.
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The crystalline nature of a granite or basalt is obvious at a glance, and while the former contains white or pink feldspar, clear vitreous quartz and glancing flakes of mica, the other shows yellow-green olivine, black augite, and gray stratiated plagioclase. Other simple tools include the blowpipe (to test the fusibility of detached crystals), the goniometer, the magnet, the magnifying glass and the specific gravity balance.
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Das received his Bachelor in Medicine and Surgery (MBBS) from Sambalpur University in 1978, and a Diploma in ophthalmic medicine and surgery (DOMS) from Kanpur University in 1980. He received his master's degree in Ophthalmology (MS) from Madurai Kamraj University in 1988. He is fellowship trained in diseases of Retina and Vitreous under Professor P Namperumalsamy. He received his Fellowship Royal College of Surgeons (FRCS) from Glasgow.
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Dogs with acute blindness and diarrhea that develop exudative retinal detachment should be assessed for protothecosis. Diagnosis is through culture or finding the organism in a biopsy, cerebrospinal fluid, vitreous humour, or urine. Treatment of the disseminated form in dogs is very difficult, although use of antifungal medication has been successful in a few cases. Prognosis for cutaneous protothecosis is guarded and depends on the surgical options.
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The church also contains Victorian stained glass windows. Richard Brett, a former rector of Quainton and one of the translators of the King James Version of the Bible, is buried in the chancel. Close by the church is the former rectory, a large house described by Pevsner as of vitreous red brick. The principal facade has a three–bayed centre and two canted bays.
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Scandiobabingtonite is a colorless or lightly gray- green colored transparent mineral with a glassy or vitreous luster. It exhibits a hardness of 6 on the Mohs hardness scale. Scandiobabingtonite occurs as short, prismatic crystals that are slightly elongated on the [001] axis which gives it a tabular or platy shape. Its crystals are characterized by the {010}, {001}, {110}, {1-10}, and {101} faces.
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CT is excellent for demonstrating dystrophic calcifications in the teratoid type. On MRI, dityomas typically appear slightly to moderately hyperdense to vitreous on T1-weighted images and hypodense on T2-weighted images, with marked homogeneous enhancement (except for prominent parts of cystic components, which, if present, may impart heterogeneity) after administration of intravenous contrast material. MRI is excellent for detection of tumors as small as 2 millimeters.
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An ironstone pitcher and washbowl. Ironstone's resistance to chipping made it a popular material for pitchers and other everyday tableware in the 19th century. Ironstone china, ironstone ware or most commonly just ironstone, is a type of vitreous pottery first made in the United Kingdom in the early 19th century. It is often classed as earthenware although in appearance and properties it is similar to fine stoneware.
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Egyptian pendant of lions or Apis Bull. The Walters Art Museum. The term faience broadly encompassed finely glazed ceramic beads, figures and other small objects found in Egypt as early as 4000 BC, as well as in the Ancient Near East, the Indus Valley Civilisation and Europe. However, this material is not pottery at all, containing no clay, but a vitreous frit, either self-glazing or glazed.
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Early vitrectomy is especially effective in people with insulin- dependent diabetes, who may be at greater risk of blindness from a hemorrhage into the eye. Vitrectomy is often done under local anesthesia. The doctor makes a tiny incision in the sclera, or white of the eye. Next, a small instrument is placed into the eye to remove the vitreous and insert the saline solution into the eye.
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Du Fay announced that electricity consisted of two fluids: "vitreous" (from the Latin for "glass"), or positive, electricity; and "resinous," or negative, electricity. This was the two-fluid theory of electricity, which was to be opposed by Benjamin Franklin's one-fluid theory later in the century.Steven Weinberg The discovery of subatomic particles Cambridge University Press (2003) , p. 15Late 1780s diagram of Galvani's experiment on frog legs.
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Ferro (iron) and vitreous (glass) construction combined the use of glass and iron in the eighteenth century and can be seen developing as early as the seventeenth century. Popularized during the Industrial Revolution as iron and steel production became more common throughout Europe and frequently utilized in world exhibitions. Notable examples include Paxton's Crystal Palace, the Palm House at Kew Gardens, and the Coal Exchange.
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Cattiite usually occurs as a mass of single crystals that are sometimes shown to be the dominant form on the {001} axis. Along the {001} axis is where the percent cleavage located at, while the uneven fractures are in other directions. Luster of Cattiite is vitreous, with a gypsum-like pearly sheen that is on the perfect cleavage planes {001}. The mineral is colorless and transparent.
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The Trial (1947) is a painting by the Australian painter Sidney Nolan. This painting depicts Ned Kelly's trial, where Kelly is depicted in handcuffs. A judge and several people look at him in the court. The painting is one of a number by Nolan to use enamel paint, usually Ripolin, a commercial paint not intended for art (and nothing to do with true vitreous enamel).
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Many copper minerals are blue or green in color; chalcophyllite is blue-green to emerald-green, with a pale green streak and vitreous to subadamantine luster, pearly on {0001}. Crystals are transparent to translucent. It is uniaxial (-) with refractive indices nω = 1.618 to 1.632 and nε = 1.552 to 1.575. Indices of refraction vary markedly depending on the relative humidity since the water content varies at ambient temperature.
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Gagarinite-(Ce) previously zajacite-(Ce) is a rare radioactive fluoride mineral with formula Na(REExCa1−x)(REEyCa1−y)F6. REE refers to rare-earth elements, mostly those belonging to the lanthanide series. It crystallizes in the trigonal rhombohedral system and has a white vitreous appearance with a conchoidal fracture. It has a Mohs hardness of 3.5 and a specific gravity of 4.44 to 4.55.
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Dial number plates were made from steel with a white vitreous enamel face. Black 302 telephone sets were equipped from the factory with straight brown textile-covered cords until 1952, when synthetic rubber (Neoprene) jacketed cords became standard equipment. Optional retractile coiled cords were available both in textile and rubber jackets since the early 1940s. The 302 was a rugged and easily repaired desk telephone.
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Tugtupite is tenebrescent, sharing much of its crystal structure with sodalite, and the two minerals are occasionally found together in the same sample. Tugtupite occurs as vitreous, transparent to translucent masses of tetragonal crystals and is commonly found in white, pink, to crimson, and even blue and green. It has a Mohs hardness of 4 and a specific gravity of 2.36. It fluoresces crimson under ultraviolet radiation.
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Wings white. Cell-spots of forewing elongate-rotundate, deep black; beyond the cell an abbreviated curved macular band and near the vitreous distal edge a similar, but nearly complete and more strongly marked band. Hindwing with two distinct red or yellow ocelli, and two anal spots, bearing sometimes red pupils; abdominal margin black grey. Female more strongly marked than male, the middle band of forewing prolonged.
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Hyalite's Mohs hardness is 5.5 to 6 and has a specific gravity of 1.9 - 2.1. It has no planes of cleavage but fractures conchoidally, is clear or translucent and has a globular structure. Its luster is vitreous and its streak is white. Hyalite is an amorphous form of silica (SiO2) formed as a volcanic sublimate in volcanic or pegmatic rock and is therefore considered a mineraloid.
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Unfired clay, like mud and clay adobe, is clay that is fired under 1000 °C or 1832 °F. This type of clay is water-soluble and unstable. Earthenware is clay that has been fired between 1000–1200 °C or 1832°–2192 °F. The firing makes the clay water insoluble but does not allow the formation of an extensive glassy or vitreous within the body.
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The elongate-conic shell is vitreous and translucent. Its length measures 2.3 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The six whorls of the teleoconch are flattened, very strongly angulated at the periphery where they are much wider than at the appressed summit.
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The elongate-conic, slender shell is vitreous. It measures 2.5 mm. The two and one-half nuclear whorls form a depressed helicoid spire, whose axis is almost at right angles to that of the succeeding turns, in the first of which it is about one-half immersed. The seven post-nuclear whorls are very slightly rounded, strongly constricted at the sutures and prominently shouldered at the summit.
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Commonly painted with a white vitreous enamel, later manufacturers working with wood continued to paint in the now traditional white; unfortunately this was often lead paint, and children were notorious for chewing and sucking the sweet surface. Since 1938, babies in Finland have slept in cardboard boxes with a mattress in the bottom, which are distributed to expectant mothers as a "maternity package" containing baby supplies.
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Synnøve Korssjøen (born 20 June 1949) is a Norwegian goldsmith. She was born in Røros to Petter Korssjøen and Solveig Sommer, and resides in Trondheim. She studied at the Norwegian National Academy of Craft and Art Industry from 1967 to 1970, and again in 1990/91. Her jewellery is typically inspired from nature, such as insects, plants and animals, and often contains vitreous enamel.
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Charles has performed a large number of vitreoretinal surgeries, as well as lectured extensively in the field. He is the author of one of the leading textbooks in the field along with nearly 200 scholarly publications. He is the founder of the Charles Retina Institute, located in Memphis, Tennessee, which is an eye clinic specializing in the treatment of retina, macula, and vitreous diseases.
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His vitreous enamel agglomerates had the appearance of precious stones with strange tonalities.L'Interimédiaire des chercheurs et curieux, 7 May 1901 Some of his masks, such as the one of Maurice Rollinat, are made of multicolored wax. He reproduced all of his works as engravings. Much of his work was inspired by music, including a series of nine allegorical statues representing the symphonies of Beethoven.
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Scolecite is usually colorless or white, but can also be pink, salmon, red or green. It is transparent to translucent, with a white streak and a luster which is vitreous, or silky for fibrous specimens. It has a Mohs hardness of 5 to and a specific gravity in the range 2.16 to 2.40. (2.24 to 2.31 2.25 to 2.29 2.16 to 2.4 2.25 to 2.31).
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He was also involved in many clinical trials conducted in India. Sharma has presented papers at 229 national and international conferences including the first international meeting on Light and Oxygen Toxicity to the Eye and has a scientific exhibit displayed at the American Academy of Ophthalmology. He was an invited guest speaker at the Annual Conference of American Academy of Ophthalmology, San Francisco in 2006 and 2009 where he delivered lectures on Minimally Invasive Vitreous Surgery: Sutureless 20, 23 and 25 Gauge System, Silicon Oil in Vitreo-Retinal Surgery and Wide Angle Vitreous Surgery. He is a peer reviewer for many international scientific journals and publications such as American Journal of Ophthalmology, Indian Journal of Ophthalmology, British Journal of Medical Groups, British Journal of Ophthalmology, Paediatric Ophthalmology and Strabismus 2010 and has been the chief editor of Jaypee's Video Atlas of Vitreo-Retinal Surgery (with 12 DVD Roms).
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The pecten is a specialised structure in the avian retina. It is a highly vascular structure that projects into the vitreous humor. Experiments show that, during saccadic eye oscillations (which occupy up to 12% of avian viewing time), the pecten oculi acts as an agitator, propelling perfusate (natural lubricants) toward the retina. Thus, in birds, saccadic eye movements appear to be important in retinal nutrition and cellular respiration.
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Crystals are monoclinic. They may have a characteristic coffin-shaped habit, but may also form simple rhombic prisms. Frequently, a crust of fine crystals will form with only the ends of the rhombs visible, making the crystals look like wedges. They have a perfect cleavage parallel to the plane of symmetry, on which the lustre is markedly pearly; on other faces the lustre is of the vitreous type.
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It is a dense substance, with a specific gravity between 5.6 and 6.0—at least 1.6 times that of diamond. Cubic zirconia is relatively hard, 8–8.5 on the Mohs scale—slightly harder than most semi-precious natural gems. Its refractive index is high at 2.15–2.18 (compared to 2.42 for diamonds) and its luster is vitreous. Its dispersion is very high at 0.058–0.066, exceeding that of diamond (0.044).
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This condition is one of a spectrum of skeletal disorders caused by mutations in the COL2A1 gene. This gene provides instructions for making a protein that forms type II collagen. This type of collagen is found mostly in cartilage and in the clear gel that fills the eyeball (the vitreous). It is essential for the normal development of bones and other tissues that form the body's supportive framework (connective tissues).
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Friends and family recall her as being particularly fast with the ball despite her small stature. Drexel aspired to a career in nursing or cosmetology, or even modeling. She had been born with persistent hyperplastic primary vitreous in her right eye, which required several surgeries, and was blind in that eye. To cover the eye's tendency to wander, she wore contact lenses that gave her a distinctive appearance.
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Color is often gray, brown, or green, and the luster is usually vitreous to pearly. The pleochroism is strong, the hardness is 5–6, and the specific gravity is 3.4–3.9. On certain surfaces it displays a brilliant copper-red metallic sheen, or schiller, which has the same origin as the bronzy sheen of bronzite, but is even more pronounced. Like bronzite, it is sometimes cut and polished as a gemstone.
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Kenridge, also known as Colridge, is a historic home located near Charlottesville, Albemarle County, Virginia. It was built in 1922, and is a three-part plan dwelling, consisting of a two-story, five bay, main block flanked by one-story wings in the Classical Revival style. The house is built from hollow vitreous tiles faced with Flemish-bonded bricks. The sections are topped by slate-covered hipped roofs.
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Infectious causes of intermediate uveitis include Epstein-Barr virus infection, Lyme disease, HTLV-1 virus infection, cat scratch disease, and hepatitis C. Permanent loss of vision is most commonly seen in patients with chronic cystoid macular edema (CME). Every effort must be made to eradicate CME when present. Other less common causes of visual loss include retinal detachment, glaucoma, band keratopathy, cataract, vitreous hemorrhage, epiretinal membrane and choroidal neovascularization.
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Pars planitis is considered a subset of intermediate uveitis and is characterized by the presence of white exudates (snowbanks) over the pars plana or by aggregates of inflammatory cells in the vitreous (snowballs) in the absence of an infectious or a systemic disease. Some physicians believe that patients with pars planitis have worse vitritis, more severe macular edema, and a guarded prognosis compared to other patients with intermediate uveitis.
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George-ericksenite is a mineral with the chemical formula Na6CaMg(IO3)6(CrO4)2(H2O)12. It is vitreous, pale yellow to bright lemon yellow, brittle, and features a prismatic to acicular crystal habit along [001] and somewhat flattened crystal habit on {110}. It was first encountered in 1984 at the Pinch Mineralogical Museum. One specimen of dietzeite from Oficina Chacabuco, Chile had bright lemon-yellow micronodules on it.
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The mineral khmaralite is a beryllium bearing mineral of the sapphirine group with a chemical formula of (Mg,Al,Fe)16[(Al,Si,Be)12O36]O40. It is most associated with sillimanite, surinamite, musgravite, garnet, and biotite. The known color is a dark greenish blue or a dark green, with a colorless streak. It is transparent with a vitreous luster with no cleavage and a Moh's hardness of 7.
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After years of research in the fields of traditional jewelry making Mohr-Mayer reestablished long lost manufacturing techniques such as guilloché and Vitreous enamel. In 1991 the company presented the first Fabergé (line) since the closing of the Fabergé workshop in 1917. Fabergé objects from the house of Victor Mayer have been acquired by the Kremlin Museum the Art Museum of New Orleans and many private collections around the world.
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1790–1816) and the bronze figure in Roman armour at the City Chambers, Edinburgh, which may represent Charles Edward Stuart or Louis XV.Clifford, "Introduction", pp. 13–14. James Tassie (1735–99) was born in Glasgow and trained as a stonemason. He attended the Foulis Academy, before moving to Dublin and then London. He developed a formula for making casts in vitreous paste and manufactured casts of antique carved gems.
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The implantation procedure takes several hours, with the person receiving the implant under general anaesthesia. The surgeon removes the vitreous humor and any membranes on the retina where the implant will be placed. The implant is attached to the surface of the retina with a tack. The cables connecting the implant to the processor are run through the pars plana, a region near where the iris and sclera touch.
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Ebersold's original art form Contemporary Cloisonné took him ten years of experimentation to perfect. His art was inspired by the Asian art of Cloisonné. Oriental Cloisonné is a process that places tiny wires or strips of either copper, brass, gold or silver in shapes, they then have vitreous enamel placed in between forming the picture for the design. Mr. Ebersold was celebrated throughout the South-west for Contemporary Cloisonné.
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Imaging studies such as ultrasonography (US), Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI) may aid diagnosis. On ultrasound, diktyomas typically appear as echogenic, irregularly shaped to ovoid masses. Ultrasound is excellent for demonstrating cystic collections of vitreous fluid in the tumor, and may show calcifications in the teratoid type. On CT, dityomas typically appear as dense, irregular masses in the ciliary body, which enhances with administration of intravenous contrast material.
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Proliferating tumor cells of diktyoma maintain the same polarity, arranged in cords and sheets folding back upon themselves. Depending on the direction of the folding, some folds surround fluid collection, while others do not. These fluid-filled spaces correspond to the grossly observed small cysts, which are mainly composed of vitreous humor. About 30-50 percent of diktyomas contain heteroplastic elements, and thus belong to the teratoid subtype.
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After World War II Kittelsen moved back to Oslo and worked for the family business. She designed numerous works of silver, vitreous enamel and plastic, sometimes collaborating with her husband, Arne Korsmo. Kittelsen pioneered the use of large-scale manufacturing methods utilized by later industrial designers. As recipient of a Fulbright grant, Kittelsen lived in the United States in 1949 and 1950, where she studied at the IIT Institute of Design.
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Consumer products to control flatulence often contain silicone oil. Silicone oils have been used as a vitreous fluid substitute to treat difficult cases of retinal detachment, such as those complicated with proliferative vitreoretinopathy, large retinal tears, and penetrating ocular trauma. Additionally, silicone oil is used in general medicine and surgery. Because of silicone oil's water repellent and lubricating properties, it is considered an appropriate material to maintain surgical instruments.
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Gieseckite and liebenerite are pseudomorphs. Two varieties of nepheline are distinguished, differing in their external appearance and in their mode of occurrence, being analogous in these respects to sanidine and common orthoclase respectively. Glassy nepheline has the form of small, colorless, transparent crystals and grains with a vitreous luster. It is characteristic of the later volcanic rocks rich in alkalis, such as phonolite, nepheline-basalt, leucite basalt, etc.
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The first three whorls of the teleoconch are well rounded, the next five considerably flattened, the seven others decidedly obese. The first five are vitreous, but as the shell grows older it gradually becomes milk-white. The summits of the whorls are closely appressed to the preceding whorl, the appressed portion appearing as a narrow band, which at first sight appears as the suture. This, however, is very inconspicuous.
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Emmonsite, also known as durdenite, is an iron tellurite mineral with the formula: Fe2(TeO3)3·2(H2O). Emmonsite forms triclinic crystals. It is of a yellowish-green color, with a vitreous luster, and a hardness of 5 on the Moh scale. Emmonsite crystal spray from the Moctezuma Mine (3 mm image width) Emmonsite was first described in 1885 for an occurrence in the Tombstone District, Cochise County, Arizona.
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It was in Birmingham where the company learned and developed its vitreous enamel skills. The company is known for its design and manufacture of livery and civic insignia which often uses the colourful enamel for the correct interpretation of Heraldry. The more typical items would be for livery jewels, civic chains of office, past officers pendants and badges. Enamels were also used decoratively on maces, medals, ceremonial swords and civic silverware.
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In 1884, Whitman got her first important commission on the recommendation of La Farge. She was commissioned to design several windows for the Central Congregational Church in Worcester, Massachusetts, including the rose window, floral windows, transparent windows with decorative leading, and divider windows. Her studio, Lily Glass Works, assembled the designs. Elements such as faces were executed in vitreous paint after her watercolor designs, as was standard practice at the time.
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Similar to Parnassius ariadne but the forewing without submarginal macular band, the vitreous margin is considerably widened, there being often a blackish spot before the hindmargin; ocelli of hindwing reddish yellow, distal margin glossy grey. The female strongly marked, partly powdered with blackish scaling; costal spot of forewing enlarged to an abbreviated band; the ocelli of the hindwing sometimes connected by a black line. Underside without basal spots. In ab.
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The British Ceramic Research Association. TN20. 1962. A specific example of pin-holes is Spit-out. These are pin-holes or craters sometimes occurring in glazed non-vitreous ceramics while they are in the decorating kiln. The cause of this defect is the evolution of water vapour, adsorbed by the porous body, during the period between the glost firing and the decorating firing, via minute cracks in the glaze.
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Both albums received critical national attention. The Pedaljets toured the US extensively from 1984–1990, often opening for Husker Du, The Flaming Lips, Soul Asylum, The Replacements, Meat Puppets, and other well known alternative bands of the 1980s. Late contemporaries included Grither, Zoom, Vitreous Humor, Believe it or Nots, and Stick. Notable musicians of this time to come from Kansas are Mark Hart, Danny Carey, Kliph Scurlock, and Brody Buster.
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An enameled cast-iron pot Enameled cast iron is cast iron that has a vitreous enamel glaze applied to the surface. The fusion of the glaze with the cast iron prevents rusting, eliminates the need to season the metal, and allows more thorough cleaning. Enameled cast iron is excellent for slow cooking and drawing flavor from foods. Furthermore, pigments used in the enameling process can produce vibrant colors.
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The exterior of the 1900 Trans-Siberian Railway egg is made of onyx, silver, gold, and quartz, and is decorated with colored vitreous enamel. The lid of the egg is hinged, has an overlay of green enamel, and is decorated with inlaid leaves of acanthus. On top of the lid is a golden three-headed eagle in gold with the Imperial Crown. The interior is lined with velvet.
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Graftonite is an iron(II), manganese, calcium phosphate mineral with the chemical formula . It forms lamellar to granular translucent brown to red- brown to pink monoclinic prismatic crystals. It has a vitreous luster with a Mohs hardness of 5 and a specific gravity of 3.67 to 3.7. It was first described from its type locality of Melvin Mountain in the town of Grafton, in Grafton County, New Hampshire.
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Cut spinel Spinel crystallizes in the isometric system; common crystal forms are octahedra, usually twinned. It has an imperfect octahedral cleavage and a conchoidal fracture. Its hardness is 8, its specific gravity is 3.5–4.1, and it is transparent to opaque with a vitreous to dull luster. It may be colorless, but is usually various shades of pink, rose, red, blue, green, yellow, brown, black, or (uncommon) violet.
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The whiteite minerals are generally brown, pink or yellow, and whiteite-(CaMnMg) may also be light lavender coloured. They are transparent to translucent, with a vitreous luster and a white to brownish white streak. They occur as aggregates of tabular crystals, or thick tabular canoe-shaped crystals. Whiteite from Rapid Creek in the Yukon, Canada, is often associated with deep blue lazulite crystals (33 out of 49 photos on Mindat.org).
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Main article: Transmission electron cryomicroscopy Cryogenic transmission electron microscopy (Cryo-TEM) uses a TEM with a specimen holder capable of maintaining the specimen at liquid nitrogen or liquid helium temperatures. This allows imaging specimens prepared in vitreous ice, the preferred preparation technique for imaging individual molecules or macromolecular assemblies, imaging of vitrified solid-electrolye interfaces, and imaging of materials that are volatile in high vacuum at room temperature, such as sulfur.
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Flattening the lens has a disadvantage; the quality of vision is diminished away from the main line of focus. Thus, animals that have evolved with a wide field-of-view often have eyes that make use of an inhomogeneous lens. As mentioned above, a refractive cornea is only useful out of water. In water, there is little difference in refractive index between the vitreous fluid and the surrounding water.
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The small shell is ovate and vitreous. Its length measures 2.2 mm. The whorls of the protoconch are deeply, very obliquely immersed in the first of the whorls of the teleoconch, above which only the tilted edge of the last volution projects, which is marked by five slender spiral threads. The four whorls of the teleoconch are well rounded, strongly contracted at the sutures and shouldered at the summits.
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The original surface building was later demolished. The platforms, originally lined in plain white tiles, were refitted with decorative vitreous enamel panels in 1985. The panel graphics were designed by Annabel Grey.Underground Architecture; David Lawrence; Capital Transport;1994 The station was modernised in 2010, resulting in new finishes in all areas of the station, apart from the retention of many of the decorative enamel panels at platform level.
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A retro blue, white, and red logo was designed. The bottle was made out of clear glass (instead of brown) but its form was based on a classical vitreous longneck beer format. This eased the logistics of distributing the drink and also helped to sell Bionade in bars and nightclubs, as a non-alcoholic drink that looked like a beer. The product was branded as a new trendy drink.
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Sodium hyaluronate is the sodium salt of hyaluronic acid. It is a glycosaminoglycan and long- chain polymer of disaccharide units of Na-glucuronate-N-acetylglucosamine. It can bind to specific receptors for which it has a high affinity. The polyanionic form, commonly referred to as hyaluronan, is a visco-elastic polymer found in the aqueous and vitreous humour of the eye and in the fluid of articulating joints.
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ERU is an autoimmune disease involving antibodies against Leptospira proteins LruA and LruB cross- reacting with eye proteins. Live Leptospira can be recovered from the aqueous or vitreous fluid of many horses with Leptospira-associated ERU. Risk of death or disability in infected animals varies depending upon the species and age of the animals. In adult pigs and cattle, reproductive signs are the most common signs of leptospirosis.
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North Wales Society of Architects Presidential Chain of Office NWSA Past President's Medal The Society's Presidential Chain of Office was designed in 1954 by Fattorini and Sons of Birmingham of hallmarked sterling silver finished in polished hard gold plate and vitreous enamelled in three colours. Between 1961 and 1994 the Society presented a Past President Medal, similarly designed and produced by Fattorini. This custom was reinstated in 2017.
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Mutations in this gene are associated with type II Stickler syndrome and with Marshall syndrome. Stickler syndrome, type II is an autosomal dominant condition caused by a mutation in the COL11A1 gene. Features of Stickler syndrome type II include: sensorineural hearing loss, facial features (flat facial profile, anteverted nares, micrognathia), cleft palate, visual disturbances (type 2 vitreous anomaly, childhood-onset myopia, glaucoma, cataracts and retinal detachment), spondyloepiphyseal dysplasia, and arthropathy.
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The vitreous shell has an elongate-ovate shape. Its length measures 2.5 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects, which is marked by five slender spiral threads. The fiver whorls of the teleoconch are well rounded, strongly contracted at the periphery and slightly shouldered at the summit.
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Limoges had strong antecedents in the production of decorative objects. The city was the most famous European centre of vitreous enamel production in the 12th century, and Limoges enamel was known as Opus de Limogia or Labor Limogiae.Arts and Crafts in the Middle Ages by Julia De Wolf Gi Addison p.97ff Limoges had also been the site of a minor industry producing plain faience earthenware since the 1730s.
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Garnet species are found in many colours including red, orange, yellow, green, blue, purple, pink, brown, black and colourless, with reddish shades most common. A sample showing the deep red color garnet can exhibit. Garnet species' light transmission properties can range from the gemstone-quality transparent specimens to the opaque varieties used for industrial purposes as abrasives. The mineral's luster is categorized as vitreous (glass-like) or resinous (amber-like).
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Ephesite found in its natural state is translucent and pink in color. It has a vitreous luster and pearly on the cleavages. Categorized as a triclinic crystal system and belongs with the point group 1 symmetry elements, this crystal class includes a one-fold rotation with or without inversion. As a group the micas are characterized by their perfect basal cleavage, giving thin, flexible, and elastic cleavage plates.
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Franklinphilite is dark brown to black and possesses a vitreous to slightly resinous luster. It is brittle with a hardness of about 4 (Mohs) and cleaves imperfectly along the {001} plane. The density varies due to impurities, but ranges from 2.6 to 2.8 g/cm3 compared to the calculated value of 2.66 g/cm3. It is translucent to nearly opaque, translucent in thin section and has a light brown streak.
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The length of the shell attains 13 mm, its diameter 4.5 mm. This delicate, white, fusiform shell contains 9½ whorls, of which 2½ in the protoconch. It is beautifully encircled with microscopic , which are gemmuled at the points of junction, giving a sericeous appearance to the surface when examined with an ordinary lens of low power. Under a higher objective the protoconch is perceived to be vitreous, most delicately cancellate throughout.
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Phialemonium curvatum has been found to be capable of causing endophthalmitis particularly in immune compromised patients. Endophthalmitis is an inflammatory response typically due to an infection of the intraocular cavities. In reference specifically to P. curvatum, hypopyon (an accumulation of pus) as well as vitreous opacities are visible in patients with endophthalmitis. Reported sources of infection can include self intracavernous injections to treat erectile dysfunction as well as phacoemulsification.
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Grisaille stained glass (15th century) The term is also applied to monochrome painting in other media such as enamels, where an effect similar to a relief in silver may be intended. It is common in stained glass, where the need for sections in different colours was thereby greatly reduced. Portions of a window may be done in grisaille – using, for example, silver stain or vitreous paint – while other sections are done in coloured glass.
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The surface is not glossy, but the texture is more vitreous and delicate than in the more northern and shallow-water species of Propebela.Verrill, A. E. 1884. Second catalogue of Mollusca recently added to the fauna of the New England coast and the adjacent parts of the Atlantic, consisting mostly of deep-sea species, with notes on others previously recorded. Transactions of the Connecticut Academy of Arts and Sciences 6: 139–294, pls. 28–32.
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Haüyne crystallizes in the isometric system forming rare dodecahedral or pseudo-octahedral crystals that may reach 3 cm across; it also occurs as rounded grains. The crystals are transparent to translucent, with a vitreous to greasy luster. The color is usually bright blue, but it can also be white, grey, yellow, green and pink. In thin section the crystals are colorless or pale blue, and the streak is very pale blue to white.
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The small claviform shell has a length of 6.2 mm, its diameter 2.6 mm. The vitreous protoconch is very small and consists of 1½ whorl (breadth ca 0,75 mm), the teleoconch contains 5 whorls.. The axial ribs are strong (with 9 ribs on the penultimate whorl). The body whorl has an inverted cone shape and its dorsum is prominently humped. The short siphonal canal is narrow and twisted slightly to the right.
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Lustre (British English) or luster (American English; see spelling differences) is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance. A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky. Similarly, the term vitreous (derived from the Latin for glass, vitrum) refers to a glassy lustre.
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A list of these terms is given below. Lustre varies over a wide continuum, and so there are no rigid boundaries between the different types of lustre. (For this reason, different sources can often describe the same mineral differently. This ambiguity is further complicated by lustre's ability to vary widely within a particular mineral species.) The terms are frequently combined to describe intermediate types of lustre (for example, a "vitreous greasy" lustre).
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Pegaptanib is administered in a 0.3 mg dose once every six weeks by intravitreal injection. An intravitreal injection is one that is administered directly into the eye, more specifically, into the vitreous humour, or the jelly-like fluid within the eye. Pegaptanib has to be administered to the designated patient by an ophthalmologist in a sterile environment. Pegaptanib is marketed as a pre- filled syringe; however the syringe contains more than the recommended dose.
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The last testing used is linkage analysis, which is used when the first two types are unavailable. Linkage analysis is also recommended for those families who have more than one member affected by the disease. MRI is often used to diagnose the retinal dysplasia that occurs with the Norrie disease. However, the retinal dysplasia can be indistinguishable on MRI from persistent hyperplastic primary vitreous, or the dysplasia of trisomy 13 and Walker–Warburg syndrome.
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The earliest known glass objects, of the mid-third millennium BC, were beads, perhaps initially created as accidental by-products of metal-working (slags) or during the production of faience, a pre-glass vitreous material made by a process similar to glazing. During the Late Bronze Age in Egypt (e.g., the Ahhotep "Treasure") and Western Asia (e.g., Megiddo),These early examples are drawn from there was a rapid growth in glassmaking technology.
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The length of the shell varies between 10 mm and 25 mm. (Original description) The pure white shell of the holotype contains 8 whorls with a glossy rounded vitreous protoconch of two whorls. The spiral sculpture resembles much as in Compsodrillia eucosmia, a line marginating the suture. There are two or three strong primaries on the upper whorls, five or six on the body whorl, and eight or ten smaller ones on the siphonal canal.
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The composition of goslarite was determined by the US National Bureau of Standards (now the National Institute of Standards and Technology) in 1959 as follows: SO3 27.84 wt%, ZnO 28.30 wt% and 43.86 wt%. Goslarite's cleavage is perfect in {010}, as for epsomite and morenosite. The color of goslarite ranges from brownish to pinkish, blue, brown, colorless, green and green blue. The luster ranges from vitreous to nacreous and silky (if fibrous).
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For low-Tg-glasses, steel moulds with a nickel alloy coating can be used. Since they cannot withstand the high temperatures required for regular optical glasses, heat-resistant materials such as carbide alloys have to be used instead in this case. In addition, mould materials include aluminium alloys, glasslike or vitreous carbon, silicon carbide, silicon nitride and a mixture of silicon carbide and carbon. A commonly used material in mould making is tungsten carbide.
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Ackery P.R. (1975) A guide to the genera and species of Parnassiinae (Lepidoptera:Papilionidae). Bull. Br. Mus. nat. Hist. (Ent.) 31, 4 pdf Opaque white, with a very faint yellowish tint; fringes black or whitish, a thin marginal line being black. Forewing dusted with black on the veins, at the base and at the costal margin, bearing the usual spots; distal margin narrowly vitreous, this band usually extended only as far as three- fourths of edge.
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The inner layer is transparent and covers the vitreous body, and is continuous from the neural tissue of the retina. The outer layer is highly pigmented, continuous with the retinal pigment epithelium, and constitutes the cells of the dilator muscle. This double membrane is often considered continuous with the retina and a rudiment of the embryological correspondent to the retina. The inner layer is unpigmented until it reaches the iris, where it takes on pigment.
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It has been shown that IL-1 family plays important role in inflammation in many degenerative diseases, such as age-related macular degeneration, diabetic retinopathy and retinitis pigmentosa. Significantly increased protein level of IL-1β has been found in the vitreous of diabetic retinopathy patient. The role of IL-1β has been investigated for potential terapeutic target for treatment of diabetic retinopathy. However, systemic using of canakinumab did not have an significant effect.
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Lavendulan is a blue or greenish blue translucent mineral, with a vitreous to waxy luster, satiny in aggregates, and a light blue streak. It occurs as thin botryoidal crusts of minute radiating fibers or as thin rectangular, pseudo-orthorhombic plates, with cleavage in three directions, nearly perfect perpendicular to the b crystal axis, and distinct perpendicular to the a and c axes. Twinning is common. The mineral is brittle, with an uneven fracture.
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Ajoite is translucent and bluish green in color, with a pale greenish white streak and a vitreous luster. The optical class is biaxial (+) with refractive indices Nx = 1.550, Ny = 1.583 and Nz = 1.641. These values are similar to the refractive index of ordinary window glass, at 1.5. In white light the mineral is distinctly pleochroic, being very light bluish green along the X direction and brilliant bluish green along the Y and Z directions.
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In Cellini's description, the sea was represented by a male figure reclining beside a ship for holding the salt; the earth he "fashioned like a woman" and placed a temple near her to serve as a receptacle for pepper. The salt cellar is made of ivory, rolled gold, and vitreous enamel. The gold is not cast in a mould but hammered by hand into its delicate shape. It stands about 26 cm tall.
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In birds, the pecten is a vascular structure of complex shape that projects from the retina into the vitreous humour; it supplies oxygen and nutrients to the eye, and may also aid in vision. Reptiles have a similar, but much simpler, structure. In adult humans, the entire retina is approximately 72% of a sphere about 22 mm in diameter. The entire retina contains about 7 million cones and 75 to 150 million rods.
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His father was the founder and owner of the notable goldsmith company J. Tostrup. He was thus brought into the goldsmith profession at an early age, and studied in Oslo, Berlin, Paris and Copenhagen between 1858 and 1865. In 1865 he returned to Norway, in 1870 he became a partner in J. Tostrup. Influenced by art industry abroad, he did pioneering work in filigree design, as well as reviving vitreous enamel art in Norway.
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Maricite (NaFePO4), is found in elongated grains up to 15 cm long in the [100] direction. The grains are radial to sub parallel in structure. Maricite is usually colorless to gray, but is sometimes a pale brown color and it has a white streak. It has a vitreous luster due to its low values of refractive indices, α = 1.676 β = 1.695 γ = 1.698, and its opacity is transparent to translucent (Fleisher, et al.
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The Maschen disc brooch lay with its face side down on the woman's chest. The brooch has a diameter of and is made of different colored vitreous enamel in cloisonné technique on a copper plate. The copper base of the brooch is can shaped, and the enamel plate was fixed in the copper base on a bed of loam by flanging the protruding edges of the bases wall. The needle apparatus was not preserved.
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The length of the shell attains 4 mm, its diameter 1.5 mm. (Original description) This species is very distinctly characterized by its ovate-fusiform form and the coarse style of its sculpture. The longitudinal ribs and the twelve transverse lirae are about equally thick, produced into acute nodules at the points of intersection, and the quadrate interstices are very deeply pitted. The shell contains 5½ slightly convex whorls, including 1½ vitreous whorl in the protoconch.
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Talmessite occurs as prismatic crystals to 3 mm, as radiating fibrous aggregates or as fine crystalline aggregates; it may also be stalactitic or in crusts. Pure talmessite is white or colourless, and colourless in transmitted light, but nickel-rich varieties are pale green and cobalt-rich varieties may be brownish, pink or the purple colour typical of many cobalt minerals. The streak is white and crystals are transparent to translucent with a vitreous lustre.
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AAV is capable of transducing multiple cell types within the retina. AAV serotype 2, the most well-studied type of AAV, is commonly administered in one of two routes: intravitreal or subretinal. Using the intravitreal route, AAV is injected in the vitreous humor of the eye. Using the subretinal route, AAV is injected underneath the retina, taking advantage of the potential space between the photoreceptors and RPE layer, in a short surgical procedure.
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Ming Dynasty cloisonné enamel bowl, using nine colors of enamel Khalili Imperial Garniture. Made in Japan during the Meiji period, it was the largest cloisonné enamel in history at the time and was exhibited at the World's Columbian Exposition in 1893. Cloisonné () is an ancient technique for decorating metalwork objects. In recent centuries, vitreous enamel has been used, and inlays of cut gemstones, glass and other materials were also used during older periods.
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As the disease progresses, severe nonproliferative diabetic retinopathy enters an advanced or proliferative (PDR) stage, where blood vessels proliferate/grow. The lack of oxygen in the retina causes fragile, new, blood vessels to grow along the retina and in the clear, gel-like vitreous humour that fills the inside of the eye. Without timely treatment, these new blood vessels can bleed, cloud vision, and destroy the retina. Fibrovascular proliferation can also cause tractional retinal detachment.
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Triamcinolone is a long acting steroid preparation. When injected in the vitreous cavity, it decreases the macular edema (thickening of the retina at the macula) caused due to diabetic maculopathy, and results in an increase in visual acuity. The effect of triamcinolone is transient, lasting up to three months, which necessitates repeated injections for maintaining the beneficial effect. Best results of intravitreal Triamcinolone have been found in eyes that have already undergone cataract surgery.
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Once known as Belus or Belos, the river is mentioned by Isidore of Seville.Etymologiae According to the legend, this is where glass-making was invented. Tacitus also mentions glassmaking at the Belus. Pliny the Elder (Natural History, 5.19), using the name 'Pacida', mentions that the river flowed from Lake Cendevia (now below Mount Carmel) for to the sea near "Ptolemais Ace" (Acre, Israel), and that it was celebrated for its vitreous sands.
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CYR61 is overexpressed in vascular smooth muscle cells of atherosclerotic lesions and in the neointima of restenosis after balloon angioplasty, both in rodent models and in humans. Suppression of CYR61 expression results in reduced neointimal hyperplasia after balloon angioplasty, an effect that is reversed by delivery of CYR61 via gene transfer In a mouse model of oxygen-induced retinopathy, expression of CYR61 in the vitreous humor produced significant beneficial effects in repairing damaged vasculature.
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Light entering the eye passes first through the cornea, which provides much of the eye's optical power. The light then continues through the fluid just behind the cornea—the anterior chamber, then passes through the pupil. The light then passes through the lens, which focuses the light further and allows adjustment of focus. The light then passes through the main body of fluid in the eye—the vitreous humour, and reaches the retina.
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Kumar is a specialist in diseases of the retina, vitreous and uvea and their management. His academic disciplines include Vitreoretinal surgery, Ophthalmic Lasers, Uveal diseases, Macular Hole surgery, anti-VEGF injections, Age Related Macular Degeneration, Retinal Detachment surgery, Myopic Traction Maculopathy, Pathological Myopia and Macular Hole Retinal Detachment. He is presently the Chief and Professor of Ophthalmology at Dr. Rajendra Prasad Centre for Ophthalmic Sciences, preceded in this post by Prof. Yog Raj Sharma.
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Boehmite or böhmite is an aluminium oxide hydroxide (γ-AlO(OH)) mineral, a component of the aluminium ore bauxite. It is dimorphous with diaspore. It crystallizes in the orthorhombic dipyramidal system and is typically massive in habit. It is white with tints of yellow, green, brown or red due to impurities. It has a vitreous to pearly luster, a Mohs hardness of 3 to 3.5 and a specific gravity of 3.00 to 3.07.
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Proliferative vitreoretinopathy (PVR) is a disease that develops as a complication of rhegmatogenous retinal detachment. PVR occurs in about 8–10% of patients undergoing primary retinal detachment surgery and prevents the successful surgical repair of rhegmatogenous retinal detachment. PVR can be treated with surgery to reattach the detached retina but the visual outcome of the surgery is very poor. PVR was originally referred to as massive vitreous retraction and then as massive periretinal proliferation.
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Extremely viscous resin extruding from the trunk of a mature Araucaria columnaris. Rosin is a solidified resin from which the volatile terpenes have been removed by distillation. Typical rosin is a transparent or translucent mass, with a vitreous fracture and a faintly yellow or brown colour, non-odorous or having only a slight turpentine odour and taste. Rosin is insoluble in water, mostly soluble in alcohol, essential oils, ether, and hot fatty oils.
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Not to mention that coordinating with the foundation is necessary with every step the Parish is going to take. The Zghartawi emigrant M. Edmond Abshi presented a donation of 200 thousand Euros for the complete restoration of the body. The restoration workshop began in March 2013 and ended in June 2013. The body was returned to Saint George Cathedral in Ehden inside a new - air and water isolator - vitreous coffin, allowing everyone to see it.
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Gordaite belongs to the point group P. This indicates that the mineral has a primitive lattice and belongs to the hexagonal/trigonal point group. Gordaite crystals are typically white or opaque and can sometimes exhibit a greenish color if trace copper is present. The crystals are broad and flat and have a vitreous luster. The mineral shows a cleavage plain parallel to {0001}, is flexible and has a Mohs hardness of about 2.5.
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As soon as the surgeon notices the capsular tear or sinking nucleus, anterior chamber infusion can be used to stabilize the chamber. Anterior vitrectomy is performed to remove the vitreous in the pupil and anterior part of eye. Then the IOL which is already planned for placing in the lens bag is inserted under the nucleus on the remaining capsule bag. The nucleus is positioned on the IOL and the remaining surgery is completed.
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The white shell is large and has an elongate-conic shape. Its length measures 8.3 mm. The whorls of the protoconch are small, vitreous, planorboid, deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution is visible. The six whorls of the teleoconch are increasing regularly in size, well rounded, very narrowly roundly shouldered at the summits, which renders the sutures well marked.
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Boron trioxide (or diboron trioxide) is one of the oxides of boron. It is a white, glassy solid with the formula B2O3. It is almost always found as the vitreous (amorphous) form; however, it can be crystallized after extensive annealing (that is, under prolonged heat). Glassy boron oxide (g-B2O3) is thought to be composed of boroxol rings which are six-membered rings composed of alternating 3-coordinate boron and 2-coordinate oxygen.
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Following the redevelopment of the Meadow Well and Royal Quays area in the early 1990s, the station was renamed Meadow Well in October 1994. The station was refurbished in 2011, along with nearby Howdon. The refurbishment project involved the installation of white vitreous enamel panels, new seating and lighting, and improved security and accessibility, as well as resurfaced platforms. The station was also painted in to the new black and white corporate colour scheme.
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It is translucent, with a vitreous luster, and dichroic yellow to yellow-green. The optical class is biaxial and the refractive indices are approximately equal to 1.90. The mineral is moderately hard, with a Mohs hardness of , between fluorite and apatite, and quite heavy, due to the lead content, with specific gravity 5.2, which is more than baryte but less than cerussite. It dissolves in hydrochloric acid and it is not radioactive.
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The first precise report on the formation of SiO was in 1887J. W. Mellor "A Comprehensive Treatise on Inorganic and Theoretical Chemistry" Vol VI, Longmans, Green and Co. (1947) p. 235. by the chemist Charles F. Maybery (1850–1927) at the Case School of Applied Science in Cleveland. Maybery claimed that SiO formed as an amorphous greenish-yellow substance with a vitreous luster when silica was reduced with charcoal in the absence of metals in an electric furnace.
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The length of the shell attains 20 mm. (Original description) The long, slender shell has a subhyaline and polished aspect. It contains a small subglobular, vitreous, tilted protoconch of1½ whorls, and 5½ subsequent whorls. Its color is translucent, with a faint yellowish band in front of the suture, visible between the ribs, and two or three spiral series of faint spots on the ribs in front of the yellow on the body whorl, or all whitish.
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Single particle analysis can be done on both negatively stained and vitreous ice-embedded CryoTEM samples. Single particle analysis methods are, in general, reliant on the sample being homogeneous, although techniques for dealing with conformational heterogeneity are being developed. Images (micrographs), in the past, were collected on film are digitized using high- quality scanners or using built-in CCD detectors coupled to a phosphorescent layer. Now it is common to use direct electron detectors to collect images.
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Z. sarpedon. This species is the first of a group of red-banded Burnets from the Mediterranean coasts which have only 3 red spots on the forewing: the anterior and the posterior wedge-spots and a small, rounded, drop-like spot corresponding to the distal portion of the central streak. — In the name-typical form, the small sarpedon Hbn., the colour is pale, but distinctly red; hindwing with a vitreous streak from the base to the middle.
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National kennel associations such as the Kennel Club (UK) publish DNA screening results on Parson Russell Terriers, broken down into three groups; clears, carriers, and affecteds. Other eye conditions which appear in the breed include cataracts in juveniles, corneal dystrophy, progressive retinal atrophy and posterior vitreous detachment. Non-eye breed related conditions which may affect a Parson are deafness and patella luxation. The average lifespan of a Parson Russell Terrier is between 14 and 15 years.
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Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements. The station was used by 203,654 passengers in 2017–18, making it the third- least-used station on the Wearside extension, after Pallion (92,060) and St. Peter's (107,887).
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Retinopathy of prematurity is a condition that occurs in premature babies. In premature babies, the retina has not completely vascularized. Rather than continuing in the normal in utero fashion, the vascularization of the retina is disrupted, leading to an abnormal proliferation of blood vessels between the areas of vascularized and avascular retina. These blood vessels grow in abnormal ways and can invade into the vitreous humor, where they can hemorrhage or cause retinal detachment in neonates.
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Non- metallic lustres include: adamantine, such as in diamond; vitreous, which is a glassy lustre very common in silicate minerals; pearly, such as in talc and apophyllite; resinous, such as members of the garnet group; silky which is common in fibrous minerals such as asbestiform chrysotile.Dyar and Darby, pp. 26–28 The diaphaneity of a mineral describes the ability of light to pass through it. Transparent minerals do not diminish the intensity of light passing through them.
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With respect to cells in critical brain regions, as many as 13% of such cells may be traversed at least once by an iron ion during a three-year Mars mission. Several Apollo astronauts reported seeing light flashes, although the precise biological mechanisms responsible are unclear. Likely pathways include heavy ion interactions with retinal photoreceptors and Cherenkov radiation resulting from particle interactions within the vitreous humor. This phenomenon has been replicated on Earth by scientists at various institutions.
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The museum also houses five polychrome glass circles are displayed, originating from the 14th century stained glass window which decorated the apse of the old church. They are the oldest vitreous work in Lombardy. The largest displays the Virgin and Blessing Child and shares with the two circles depicting the angels the peculiarity of the face and the hands devoid of color. The other two circles show, respectively, Saint Dominic Blessing and Peter of Verona, the first Dominican saint.
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The incidence of associated PVD range from 75-93%, and PVD is present in virtually all eyes with retinal breaks or retinal detachments and subsequent ERM formation. PVD can lead to retinal breaks that may liberate RPE cells that initiate membrane formation. Small breaks in the internal limiting membrane (ILM) after PVD also may provide retinal astrocytes access to the vitreous cavity, where they may subsequently proliferate. Many ERM also have ILM fragments that may be peeled separately.
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Amosite, CAS No. , often referred to as brown asbestos, is a trade name for the amphiboles belonging to the cummingtonite-grunerite solid solution series, commonly from South Africa, named as a partial acronym for "Asbestos Mines of South Africa". One formula given for amosite is Fe7Si8O22(OH)2. Amosite is seen under a microscope as a grey-white vitreous fiber. It is found most frequently as a fire retardant in thermal insulation products, asbestos insulating board and ceiling tiles.
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In Yukon, Canada bobdownsite is found composed of anhedral and euhedral crystals, tabular, colorless in transmitted light, transparent, with a white streak and a vitreous luster. The Tip Top mine sample has druses of pale purple, yellow, or transparent colorless rhombohedral crystals, brittle, with a hardness about 5, no cleavage, parting or twinning, and an uneven and subconchoidal fracture. Bobdownsite has a density of 3.14 and 3.16 g/cm3 and is insoluble in water, acetone, or hydrochloric acid.
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Andosols are a Reference Soil Group of the World Reference Base for Soil Resources (WRB). They are closely related to other types of soils such as Vitrosols, Vitrandosols, Vitrons and Pumice Soils that are used in different soil classification systems. Poorly developed Andosols are often rich in vitreous materials and are therefore also called Vitric Andosols. Andosols are usually defined as soils containing high proportions of glass and amorphous colloidal materials, including allophane, imogolite and ferrihydrite.
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She also had recent blood tests showing severely low levels of a certain type of leukocytes that may have been a sign of an underlying bone marrow condition. In addition, Gloria had a vitamin D deficiency. The medical examiner's report also made no mention of testing the vitreous humour, the clear gel inside the eyes, which is a standard way to diagnose dehydration. Gloria's bodily fluids were tested only for drugs, poison and semen, and all tests were negative.
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Ophthalmoscopy, also called funduscopy, is a test that allows a health professional to see inside the fundus of the eye and other structures using an ophthalmoscope (or funduscope). It is done as part of an eye examination and may be done as part of a routine physical examination. It is crucial in determining the health of the retina, optic disc, and vitreous humor. The pupil is a hole through which the eye's interior will be viewed.
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This gene provides instructions for making a protein that forms type II collagen. This type of collagen is found mostly in cartilage and in the clear gel that fills the eyeball (the vitreous). It is essential for the normal development of bones and other tissues that form the body's supportive framework (connective tissues). Mutations in the COL2A1 gene interfere with the assembly of type II collagen molecules, which prevents bones and other connective tissues from developing properly.
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The ancestors of modern arachnids probably had both types, but modern ones often lack one type or the other. The cornea of the eye also acts as a lens, and is continuous with the cuticle of the body. Beneath this is a transparent vitreous body, and then the retina and, if present, the tapetum. In most arachnids, the retina probably does not have enough light sensitive cells to allow the eyes to form a proper image.
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The mineral has a Mohs hardness of 5.5 and was believed it had a specific gravity of 2.94 which was first determined by Pough and Henderson, 1945. With the second occurrence of the mineral, it was determined that the specific gravity of the mineral was actually 2.98. Brazilianite has a vitreous luster, has a white streak, and the mineral is translucent to transparent. The color of brazilianite ranges from dark yellow-green to a pale yellow.
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This may include scleral buckling where silicone is sutured to the outside of the eye, pneumatic retinopexy where gas is injected into the eye, or vitrectomy where the vitreous is partly removed and replaced with either gas or oil. Retinal detachments affect between 0.6 and 1.8 people per 10,000 per year. About 0.3% of people are affected at some point in their life. It is most common in people who are in their 60s or 70s.
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Egyptian faience is not really faience, or pottery, at all, but made of a vitreous frit, and so closer to glass. In English 19th-century usage "faience" was often used to describe "any earthenware with relief modelling decorated with coloured glazes",Petrie, Kevin; Livingstone, Andrew, eds., The Ceramics Reader, p. 98, 2017, Bloomsbury Publishing, , 9781472584434, google books including much glazed architectural terracotta and Victorian majolica, adding a further complexity to the list of meanings of the term.
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Guler, a master of the style, had studied painting in Munich, Germany. Many of them are signed and were installed from 1914 to 1918. They are not just leadlights, decorative windows made of small sections of glass supported in lead cames, but are authentic stained glass; the painters employed by Munich Studio used dark brown vitreous oxide and silver stain to paint designs on pieces of various types of glass. These types included glasses differing in color and translucency.
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On the south side of the nave and in the apse are two-light windows and at the east end behind the gallery is a four-light window. The tower has six stages and contains tall lancet bell- openings. Above these is the clock stage, corbelled out from the shaft of the tower and surmounted by pinnacles at each corner. On each side is a clock face made from vitreous enamel; each clock face is in diameter.
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Zinc, magnesium and manganese commonly substitute for the iron resulting in the siderite-smithsonite, siderite- magnesite and siderite-rhodochrosite solid solution series. Siderite has Mohs hardness of 3.75-4.25, a specific gravity of 3.96, a white streak and a vitreous lustre or pearly luster. Siderite is antiferromagnetic below its Néel temperature of 37 K which can assist in its identification. It crystallizes in the trigonal crystal system, and are rhombohedral in shape, typically with curved and striated faces.
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The cornea is transparent and more curved, and is linked to the larger posterior segment, composed of the vitreous, retina, choroid and the outer white shell called the sclera. The cornea is typically about 11.5 mm (0.3 in) in diameter, and 0.5 mm (500 μm) in thickness near its center. The posterior chamber constitutes the remaining five-sixths; its diameter is typically about 24 mm. The cornea and sclera are connected by an area termed the limbus.
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Most of the Elk Formation coals are of high-volatile bituminous rank and most seams are less than thick. An unusual type of coal, referred to as "needle coal" occurs in very thin beds in the upper third of the formation. It consists of compacted masses of rod-like "needles" and has been shown to be of algal origin. "Needles" of vitreous coal are also found in some of the siltstones associated with the needle coals.
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They also used the former TASCOS building on the corner of Alton Road until it was destroyed in a massive fire. A dentists surgery now occupies the site.Pearson, Wendy: Selly Oak and Bournbrook through time (Amberley 2012) p39 The Patent Enamel Company Ltd, founded in 1888, moved to a purpose built factory in Heeley Road in the following year. Benjamin Baugh had begun to manufacture tough vitreous enamelled sheet wrought iron in Bradford Street In 1857.
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The ferrierite group of zeolite minerals (the FER structure) consists of three very similar species: ferrierite-Mg, ferrierite-Na, and ferrierite-K, based on the dominant cation in the A location. ferrierite-Mg and ferrierite-K are orthorhombic minerals and ferrierite-Na is monoclinic with highly variable cationic composition . Calcium and other ions are often also present. They are found in vitreous to pearly, often radiating, spherical aggregates of thin blade-shaped transparent to translucent crystals.
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Bry explained the transition as an effort to free herself from the "tyranny of nature." She aimed to move from painting subjects "in the customary sense like a figure or scene" toward a more direct expression of emotion. In these deeply felt works she increasingly showed religious subjects. In the late 1950s Bry began to experiment with works in fused glass and vitreous enamel and thereafter began to make fused glass panels mainly for places of worship.
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This included a station at Wapping, but was never built. The extension constructed in the 1990s followed a different route to the south of the River Thames. The station was extensively remodelled between 1995 and 1998, when the entire East London Line—including Wapping station—was closed due to repair work on the tunnels under the Thames. Vitreous enamel panels by Nick Hardcastle, showing the station and the area in former and modern times, were installed on the platforms.
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Fernando de Alva Cortés Ixtlilxochitl, an Aztec descendant and the author of the Codex Ixtlilxochitl, claimed that one in five children of the Mexica subjects was killed annually. These high figures have not been confirmed by historians. Hernán Cortés describes an event in his Letters: In Xochimilco, the remains of a three-to- four-year-old boy were found. The skull was broken and the bones had an orange/yellowish cast, a vitreous texture, and porous and compacted tissue.
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The very small shell is vitreous, transparent. Its length measures 2.2 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are inflated, strongly rounded, decidedly contracted at the suture, and appressed at the summit, where the preceding whorl is reflected through it, and gives the summit the false appearance of having a spiral cord.
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Researchers believe that the LF perceived specifically by astronauts in space are due to cosmic rays (high-energy charged particles from beyond the Earth's atmosphere), though the exact mechanism is unknown. Hypotheses include Cherenkov radiation created as the cosmic ray particles pass through the vitreous humour of the astronauts' eyes, direct interaction with the optic nerve, direct interaction with visual centres in the brain, retinal receptor stimulation, and a more general interaction of the retina with radiation.
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A pedestrian subway was built to allow passengers to cross the line, however, it does not have ramps for improved wheelchair or pushchair access. The North Eastern Railway footbridge was removed, and is now located at Goathland on the North Yorkshire Moors Railway. The station was refurbished in 2011, along with nearby Meadow Well. The refurbishment project involved the installation of white vitreous enamel panels, new seating and lighting, and improved security and accessibility, as well as resurfaced platforms.
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Its specific gravity is 4.24 and it exhibits a colorless to pale yellow hue, along with a white streak and vitreous luster. This triclinic specimen classified under the space group P features striated crystals up to two centimetres in radial to subparallel aggregates. The Handbook of Mineralogy further states the cell dimensions of biaxial Warikahnite to be calculated as a = 6.710(1) Å, b = 8.989(2) Å, and c = 14.533(2) Å, with unit cell volume as 788.58 Å.
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A selection of historic enamel signs advertising a variety of products, Herefordshire, Great Britain An enamel sign is a sign made using vitreous enamel. These were commonly used for advertising and street signage in the period 1880 to 1950. Benjamin Baugh created the first purpose-built factory for making such signs in Selly Oak in 1889 -- the Patent Enamel Company. The technique of porcelain enamelling on cast iron was developed in Central Europe in the early 1800s .
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Values above 180 mmol/L are associated with a high mortality rate, particularly in adults. However, such high levels of sodium rarely occur without severe coexisting medical conditions. Serum sodium concentrations have ranged from 150–228 mmol/L in survivors of acute salt overdosage, while levels of 153–255 mmol/L have been observed in fatalities. Vitreous humor is considered to be a better postmortem specimen than postmortem serum for assessing sodium involvement in a death.
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CE During the Bronze Age of the Mediterranean there were a vast number of differential metallurgical processes in use. A slag by-product of such workings was a colorful, glassy, vitreous material found on the surfaces of slag from ancient copper foundries. It was primarily blue or green and was formerly chipped away and melted down to make glassware products and jewelry. It was also ground into powder to add to glazes for use in ceramics.
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In a nuclear setting, Cherenkov radiation is instead seen in dense media such as water or in a solution such as uranyl nitrate in a reprocessing plant. Cherenkov radiation could also be responsible for the "blue flash" experienced in an excursion due to the intersection of particles with the vitreous humour within the eyeballs of those in the presence of the criticality. This would also explain the absence of any record of blue light in video surveillance of the more recent incidents.
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Newcastle-based creative communications agency, Gardiner Richardson, alongside University of Sunderland lecturer, Lothar Goetz, worked on redeveloping the station's passenger areas. Gardiner Richardson's work centred on updating Tyne and Wear Metro corporate branding, including the colour palette and signage. Lothar Goetz created an artwork, Canon, using a number of coloured vitreous enamel panels in the concourse, escalator shaft and platform area. A total of £5 million was spent on refurbishing the passenger area of the station, with work completed in 2009.
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Scientific Reports, 7: 5484. . Cryogenic electron microscopy (cryo-EM) is an electron microscopy (EM) technique applied on samples cooled to cryogenic temperatures and embedded in an environment of vitreous water. An aqueous sample solution is applied to a grid-mesh and plunge-frozen in liquid ethane or a mixture of liquid ethane and propane. While development of the technique began in the 1970s, recent advances in detector technology and software algorithms have allowed for the determination of biomolecular structures at near-atomic resolution.
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The length of the shell attains 4 mm, its diameter 2 mm. (Original description) This short, pyramidal-fusiform shell has much in common with Guraleus himerodes (Melvill & Standen, 1896), but is smaller and of a pale yellow-ochre colour throughout. The whorls are angularly turreted, they are six in number, including the two vitreous apical whorls. At the sutures there is a quasi-crenulation, owing to the commencement of the prominent longitudinal ribs, there crossed by acute lirae, the interstices being smooth.
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Whilst the mould is still damp, Reekie paints the inside surfaces with vitreous enamel which gives the glass the kind of 'painterly quality' that characterises his drawings: a technique perfected over many years. In this way the colour is transferred to the three dimensional glass sculpture. A displacement test, using a bucket of water in the manner of Archimedes, is used to measure the quantity of glass needed. The mould is then filled with cullet and transferred to a kiln.
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Morris Beckman was an American architect. Numerous buildings that eventually were listed on the National Register of Historic Places are credited to him. These include, for example, the Peter Hansen House (Pierre, South Dakota), which is listed on the National Register of Historic Places in Hughes County, South Dakota. Along with architect Roy Blass, Beckman is credited with design of the "Esquire" prototype of Lustron house, which was manufactured by Chicago Vitreous firm in Cicero, Illinois and installed at Hinsdale, Illinois in 1946.
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Hiddenite has a strong vitreous luster and displays strong colors due to pleochroism. In addition to the North Carolina locality, Hiddenite has also been found in Brazil, China, and Madagascar. Green spodumene found in Afghanistan and Pakistan has excited modest amounts of controversy in the mineral and gemological communities with debate over whether or not it should be truly considered "hiddenite" as well as claims that the green coloration is induced by irradiation and is fugitive. Deposits occur in granite pegmatite.
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Buick produced a method for permanently coating cast iron with vitreous enamel which allowed the production of "white" baths at lower cost. He later sold his plumbing business and the patents to American Standard. Using the profits from this sale, Buick started working on gasoline engines, and later automobiles. He eventually moved his operations from Detroit to the Flint Wagon Works. William Durant managed the fledgling Buick Manufacturing Company, making it the number one car-building company in the country by 1908.
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He exhibited vitreous enamel works in Melbourne's Argus Gallery. Max Harris, in The Bulletin of 20 October 1962, praised Ostoja's sets for My Cousin from Fiji in Union Theatre, Adelaide, and his technique of rear screen projections as later adopted throughout Australia. 1963 Ostoja continued to develop Multi- Image projections, demonstrating for the first time in Australia the concept later to be known as 'audio-visuals!'. Ostoja gave Sir Herbert Read, the art critic, a personal viewing of one of his visual presentations.
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Henderson's painting style transitioned greatly from his early days favouring the mediums of Oil on Canvas; Oil on Paper; Watercolour; Gouache; Charcoal; Acrylic; Vitreous Enamel, using calligraphy in much of his work. His early vividly coloured geometric patterns were in the abstract contemporary style of the period. From the early 1980s his style developed into lyrical abstraction. Later with the transition to landscape scenes, typically of the Irish borders and coast, many layers of paint are used to build depth into each picture.
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In contrast, floaters are specks or threads of variable diameter and variable visual sharpness, some of complex shape, darker than the background. If the eye stops moving, the floaters settle down. If the eye moves, the floaters follow sluggishly, because they are contained in the vitreous humor which is subject to inertia. Scheerer's phenomenon can be distinguished from visual snow because it appears only when looking into bright light, whereas visual snow is constantly present in all light conditions including the dark.
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The mineral is perfectly sectile and has a shining streak; hardness 2.5, specific gravity is 7.2–7.4. It occurs in mineral veins, and when found in large masses, as in Mexico and in the Comstock Lode in Nevada, it forms an important ore of silver. The mineral was mentioned in 1529 by G. Agricola, but the name argentite was not used till 1845 and is due to W. Haidinger. Old names for the species are Glaserz, silver-glance and vitreous silver.
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Vitrectomy is an increasingly used treatment for retinal detachment. It involves the removal of the vitreous gel and is usually combined with filling the eye with either a gas bubble (SF6 or C3F8 gas) or silicone oil (PDMS). An advantage of using gas in this operation is that there is no myopic shift after the operation and gas is absorbed within a few weeks. PDMS, if used, needs to be removed after a period of 2–8 months depending on surgeon's preference.
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Packages consisting of a lead frame embedded in a vitreous paste layer between flat ceramic top and bottom covers are more convenient than metal/glass packages for some products, but give equivalent performance. Examples are integrated circuit chips in ceramic Dual In-line Package form, or complex hybrid assemblies of chip components on a ceramic base plate. This type of packaging can also be divided into two main types: multilayer ceramic packages (like LTCC and HTCC) and pressed ceramic packages.
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Lampworking-closeup Lampwork glass beads Glass beadmaking is among the oldest human arts, with the oldest known beads dating over 3,000 years. Glass beads have been dated back to at least Roman times. Perhaps the earliest glass-like beads were Egyptian faience beads, a form of clay bead with a self-forming vitreous coating. Glass beads are significant in archaeology because the presence of glass beads often indicate that there was trade and that the beadmaking technology was being spread.
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Patients may be able to return home soon after the vitrectomy, or may be asked to stay in the hospital overnight. After the operation, the eye will be red and sensitive, and patients usually need to wear an eyepatch for a few days or weeks to protect the eye. Medicated eye drops are also prescribed to protect against infection. There is evidence which suggests anti-VEGF drugs given either prior to or during vitrectomy may reduce the risk of posterior vitreous cavity haemorrhage.
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Pupillary cysts, also central cysts, are located from the pupillary margin to the iris root, midzonal cysts are located from the iris root to the ciliary body, and peripheral cysts are located at the iridociliary sulcus. Free- floating cysts can occur in the anterior and vitreous chamber and are usually dislodged epithelium cysts. Cysts of the iris stroma are anteriorly located and as they develop, they usually cause deformation of the iris and need treatment. Especially the congenital secondary cysts require often treatment.
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Coats' usually affects only one eye (unilateral) and occurs predominantly in young males 1/100,000, with the onset of symptoms generally appearing in the first decade of life. Peak age of onset is between 6–8 years of age, but onset can range from 5 months to 71 years.EdwardDP, Mafee MF, Garcia-Valenzuela E, Weiss RA. Coats' disease and persistent hyperplastic primary vitreous: role of MR imaging and CT. Radiol Clin North Am 1998; 36(6): 1119–1131.WoodsAC, Duke JR. Coats's disease.
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Although glaze compositions vary regionally and chronologically, depending on the formation of the body and the glazing process employed, objects produced with different glazing techniques do not exhibit immediate diagnostic chemical variations in their compositions.Tite, M.S., Freestone I.C. and Bimson. M. 1983. Egyptian faience: an investigation of the methods of production, Archaeometry 25, 17–27 The recognition of the various glazing techniques, through microscopic observations of the degree of sintering and the vitreous phase of quartz body, is also ambiguous.
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Vanarsite's physical properties show a very dark blue color, grayish blue streak, vitreous luster, and a hardness of 2 on the Mohs hardness scale. It also has transparent diaphaneity, brittle tenacity, curved fracture, and fair cleavage on {100}. Vanarsite has a calculated density of 2.460 g/cm3 and a measured density of 2.48(2) g/cm3. Its optical class is biaxial (-) with an α value of 1.645(5), a β value of 1.677(calc), and a γ value of 1.681(calc).
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The station is adjacent to Heaton Traction Maintenance Depot, as well as the East Coast Main Line. Chillingham Road was the first surface station on the network to undergo major renovation, with work completed in October 2011. The refurbishment project involved the installation of white vitreous enamel panels, new seating and lighting, improved security and accessibility, as well as resurfaced platforms. Refurbishment work was completed in October 2011, with the station having been branded in the updated black and white corporate colour scheme.
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After vitrectomy to remove the vitreous gel, membranectomy is undertaken to peel away the tissue. Diabetic retinopathy – may damage sight by either a non-proliferative or proliferative retinopathy. The proliferative type is characterized by formation of new unhealthy, freely bleeding blood vessels within the eye (called vitreal hemorrhage) and/or causing thick fibrous scar tissue to grow on the retina, detaching it. Often diabetic retinopathy is treated in early stages with a laser in the physician's office to prevent these problems.
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O'Malley founded the first unit of the Order of Malta Ambulance Corps in Ireland in 1938 and later became a member of the Sovereign Military Order of Malta. Conor and Sal O'Malley had three daughters (Grace O' Hara, Joan Ringrose and Ann Kelly). His two sons, Patrick O'Malley and Conor C. O'Malley (1930-2012), graduated in Medicine from UCG. Both became leading ophthalmologists in the USA and contributed technical developments in retinal surgery (O'Malley Xenon Photocoagulator) and vitreous surgery (Ocutome Vitrector).
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Andersonite, Na2Ca(UO2)(CO3)3·6H2O, or hydrated sodium calcium uranyl carbonate is a rare uranium carbonate mineral that was first described in 1948. Named after Charles Alfred Anderson (1902–1990) of the United States Geological Survey, who first described the mineral species, it is found in sandstone-hosted uranium deposits. It has a high vitreous to pearly luster and is fluorescent. Andersonite specimens will usually glow a bright lemon yellow (or green with blue hints depending on the deposit) in ultraviolet light.
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The posterior chamber is a narrow space behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes. The posterior chamber consists of small space directly posterior to the iris but anterior to the lens. The posterior chamber is part of the anterior segment and should not be confused with the vitreous chamber (in the posterior segment). Posterior chamber is an important structure involved in production and circulation of aqueous humor.
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After production, pieces were often photographed to be added to the company's extensive photo archive. The success of the Caldwell firm was due to extensive variety of historic patterns at hand, which could be effectively incorporated into electric fixtures to enhance the beauty of an interior. Under Von Lossberg, the company created more original designs rather than strictly duplicating antiques that had been a standard for the firm previously. Lighting and desk accessories now contained intricate gilding and vitreous enamel work.
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Litten is remembered for being the first physician to describe vitreous bleeding in correlation with subarachnoid hemorrhage (SAH). In 1881 he published his findings in Ueber einige vom allgemein-klinischen Standpunkt aus interessante Augenveränderungen (Berl Klin Wochenschr 18: 23– 27). Several years later, French ophthalmologist Albert Terson noticed these symptoms in a patient, and the condition is now known as "Terson's syndrome". In 1880 Litten documented one of the earliest known cases of a paradoxical embolism in a patient undergoing anaesthesia.
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Park Lane is a station on the Tyne and Wear Metro, serving the city centre in Sunderland. The station joined the network in April 2002, following the opening of the extension from Pelaw to South Hylton. The station is located below Park Lane Bus Station, which opened in May 1999, as a replacement for the former Sunderland Central Bus Station. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison.
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The shell grows to a length of 6.8 mm, its diameter 2.5 mm. (Original description) The small, vitreous, semitranslucent shell has an elongate-conic shape.. The protoconch contains 1.5,well rounded, smooth whorls. The postnuclear whorls are moderately well rounded, marked by rather strong, almost vertical axial ribs, which become weak toward the summit and which attain their largest development on the posterior third of the whorls. On the first whorl on the teleoconch these ribs are cusped; on the later ones they become less elevated.
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Bromfenac lactam, the main metabolite in urine Bromfenac is well absorbed through the cornea and reaches highest concentrations in the aqueous humour after 150 to 180 minutes, with a biological half-life of 1.4 hours and high drug levels being maintained for at least 12 hours. It is mainly concentrated in the aqueous humour and conjunctiva, and much less in the lens and vitreous body. Concentrations in the blood plasma are too low to be measured quantitatively. 99.8% of the substance are bound to plasma proteins.
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The earliest known glass objects were beads, perhaps created accidentally during metalworking or the production of faience. Due to its ease of formability into any shape, glass has been traditionally used for vessels, such as bowls, vases, bottles, jars and drinking glasses. In its most solid forms, it has also been used for paperweights and marbles. Glass can be coloured by adding metal salts or painted and printed with vitreous enamels, leading to its use in stained glass windows and other glass art objects.
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The amorphous structure of glassy silica (SiO2) in two dimensions. No long-range order is present, although there is local ordering with respect to the tetrahedral arrangement of oxygen (O) atoms around the silicon (Si) atoms. The standard definition of a glass (or vitreous solid) is a solid formed by rapid melt quenching.ASTM definition of glass from 1945 However, the term "glass" is often defined in a broader sense, to describe any non-crystalline (amorphous) solid that exhibits a glass transition when heated towards the liquid state.
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An inverse hypopyon is different from a standard hypopyon. Inverse hypopyon is seen after a pars plana vitrectomy with an insertion of silicone oil (as a replacement of the vitreous humour that has been removed in the operation; the silicone oil maintains internal tamponade). When the silicone oil emulsifies, it seeps into the anterior chamber and settles at the top of the anterior chamber. This is in contrast to hypopyon resulting from toxins where the leukocytes settle at the bottom of the anterior chamber.
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Over time, only elite could afford the copper forcing artists to stretched vellum, ivory, or paper. Dutch and German miniatures were painted in oil, and as a rule these are on copper; and there are portraits in the same medium, and often on the same material, attributed to many of the great Italian artists, notably those of the Bologna school. Samuel Cooper is said to have executed a few paintings in oil on copper. Beginning in the mid-17th century, many watercolors were conducted with vitreous enamel.
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The number of tiers ranged from two to seven, with a shrine or temple at the summit. Access to the shrine was provided by a series of ramps on one side of the ziggurat or by a spiral ramp from base to summit. It has been suggested that ziggurats were built to resemble mountains, but there is little textual or archaeological evidence to support that hypothesis. Classical ziggurats emerged in the Neo-Sumerian Period with articulated buttresses, vitreous brick sheathing, and entasis in the elevation.
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Daily Express Building in Fleet Street, London. Pigmented structural glass, also known generically as structural glass and as vitreous marble, and marketed under the names Carrara glass, Sani Onyx, and Vitrolite, among others, is a high-strength, colored glass. Developed in the United States in 1900, it was widely used around the world in the first half of the 20th century in Art Deco and Streamline Moderne buildings. It also found use as a material for signs, tables, and areas requiring a hygienic surface.
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This gene encodes the alpha-1 chain of type II collagen, a fibrillar collagen found in cartilage and the vitreous humor of the eye. Mutations in this gene are associated with achondrogenesis, chondrodysplasia, early onset familial osteoarthritis, SED congenita, Langer- Saldino achondrogenesis, Kniest dysplasia, Stickler syndrome type I, and spondyloepimetaphyseal dysplasia Strudwick type. In addition, defects in processing chondrocalcin, a calcium binding protein that is the C-propeptide of this collagen molecule, are also associated with chondrodysplasia. There are two transcripts identified for this gene.
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Strandlund held over 150 farm implement patents through his work as a production engineer at the Minneapolis-Moline tractor company, including the creation of rubber tires for tractors. He later served as president of the Oliver Farm Equipment Company. He was hired by the Chicago Vitreous Enamel Product Company to transform the factory for defense production. Strandlund invented manufacturing techniques to build non-warping metal plates for tanks during World War II, created air conditioning systems for movie theaters, and invented a wallpaper-removing machine.
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This allows inspection of all the ocular media, from cornea to vitreous, plus magnified view of eyelids, and other external ocular related structures. Fluorescein staining before slit lamp examination may reveal corneal abrasions or herpes simplex infection. The binocular slit-lamp examination provides stereoscopic magnified view of the eye structures in striking detail, enabling exact anatomical diagnoses to be made for a variety of eye conditions. Also ophthalmoscopy and gonioscopy examinations can also be performed through the slit lamp when combined with special lenses.
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The style features aerodynamic lines, chromium steel, colored vitreous marble, tubular neon, stucco walls, glass blocks, tinted mirrors, and recessed lighting. All these features combine to create a streamlined industrial look which was very popular at the time, especially for theaters and commercial buildings."Streamline Moderne" , Style Guide, Deschutes County Landmarks, Deschutes County, Bend, Oregon, 8 August 2009. Not only did he build his new Odem theater in that style, he also built a new Streamline Moderne home the same year the theater was constructed.
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Spondyloperipheral dysplasia is one of a spectrum of skeletal disorders caused by mutations in the COL2A1 gene, located on chromosome 12q13.11-q13.2. The protein made by this gene forms type II collagen, a molecule found mostly in cartilage and in the clear gel that fills the vitreous humour (the eyeball). Type II collagen is essential for the normal development of bones and other connective tissues (the tissues that form the body's supportive framework). Mutations in the COL2A1 gene interfere with the assembly of type II collagen molecules.
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Onondaga Pottery started producing a heavy earthenware called "Ironstone" but struggle to succeed. In 1873, they began manufacturing a "white graniteware" and then in 1885 a semi-vitreous ware. A year later they replaced this with high fired china and a guarantee that the glaze would not crackle or craze - the first time American-made tableware carried such a warranty. It was at this point, 45 years after the start of pottery production in Syracuse that the pottery business showed a stable and profitable prospect.
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As part of the introduction of the S7 and S8 Stock trains to the District, Circle, Hammersmith & City and Metropolitan lines in the early 2010s, power upgrades required the construction of a large electrical substation adjacent to the station. Art on the Underground commissioned artist Jacqueline Poncelet to produce designs for the of vitreous enamel cladding that would become the outer shell of the substation. The artwork - Wrapper - was unveiled in November 2012, a mosaic of 700 decorated panels of various patterns inspired by local history.
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The Si-O-Si bond angle also varies from 140° in α-tridymite to 144° in α-quartz to 180° in β-tridymite. Any deviations from these standard parameters constitute microstructural differences or variations that represent an approach to an amorphous, vitreous or glassy solid. The transition temperature Tg in silicates is related to the energy required to break and re-form covalent bonds in an amorphous (or random network) lattice of covalent bonds. The Tg is clearly influenced by the chemistry of the glass.
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The retraction of the apical process of the RGC is likely mediated by Slit- Robo signaling. RGCs will grow along glial end feet positioned on the inner vitreal surface (side closest to the future vitreous humor). Neural cell adhesion molecule (N-CAM) will mediate this attachment via homophilic (N-CAM binds only to that isotope of N-CAM: A with A, B with B, never A with B) interactions. Slit signaling also plays a role, preventing RGCs from growing into layers beyond the optic fiber layer.
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The retina of diabetic individuals often exhibits loss of pericytes, and this loss is a characteristic factor of the early stages of diabetic retinopathy. Studies have found that pericytes are essential in diabetic individuals to protect the endothelial cells of retinal capillaries. With the loss of pericytes, microaneurysms form in the capillaries. In response, the retina either increases its vascular permeability, leading to swelling of the eye through a macular edema, or forms new vessels that permeate into the vitreous membrane of the eye.
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South Hylton boasts the longest platform on the Tyne and Wear Metro network, with a length of . Because of this, the single platform is officially recognised as two platforms, and can accommodate two trains. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements.
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Ackery P.R. (1975) A guide to the genera and species of Parnassiinae (Lepidoptera:Papilionidae). Bull. Br. Mus. nat. Hist. (Ent.) 31, 4 pdf P. actius can be recognized by the more elongate and a little more pointed forewing. Ground colour usually pure white, more rarely slightly yellowish; vitreous margin of forewing narrow, as a rule not reaching the posterior angle, or the edge itself posteriorly narrowly white: submarginal spots feebly developed; in male usually only the anterior costal spot centred with red, in female both spots.
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The name faience is simply the French name for Faenza, in the Romagna near Ravenna, Italy, where a painted majolica ware on a clean, opaque pure-white ground, was produced for export as early as the fifteenth century. Hispano-Moresque ware dish from Manises, 15th century, the earliest type of European faience. Technically, lead-glazed earthenware, such as the French sixteenth-century Saint-Porchaire ware, does not properly qualify as faience, but the distinction is not usually maintained. Semi-vitreous stoneware may be glazed like faience.
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Vitreous enamels in the different colors are ground to fine powders in an agate or porcelain mortar and pestle, then washed to remove the impurities that would discolor the fired enamel. The enamel is made from silica, niter, and lead oxide to which metallic oxides are added for coloring. These ingredients are melted together, forming a glassy frit which is ground again before application. Each color of enamel is prepared this way before it is used and then mixed with a very dilute solution of gum tragacanth.
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Edgar Dutra Zanotto is a materials engineer and professor at the Federal University of Sao Carlos (UFSCar) in Brazil. He currently teaches glass related subjects for both undergraduate and post-graduate students and he is the head of the Vitreous Materials Laboratory (LaMaV). He is a recipient of the 2010 TWAS Prize. In May 1998, Zanotto wrote an article in the American Journal of Physics relating to the false notion that observations of thick glass on old windows translated to the fact that glass is a liquid.
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He identified the term with vitreous electricity and with resinous electricity after performing an experiment with a glass tube he had received from his overseas colleague Peter Collinson. The experiment had participant A charge the glass tube and participant B receive a shock to the knuckle from the charged tube. Franklin identified participant B to be positively charged after having been shocked by the tube. There is some ambiguity about whether William Watson independently arrived at the same one- fluid explanation around the same time (1747).
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In frogs, there are two muscles, one above and one below the lens, while other amphibians have only the lower muscle. In the most primitive vertebrates, the lampreys and hagfish, the lens is not attached to the outer surface of the eyeball at all. There is no aqueous humor in these fish, and the vitreous body simply presses the lens against the surface of the cornea. To focus its eyes, a lamprey flattens the cornea using muscles outside of the eye and pushes the lens backwards.
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The lens is part of the anterior segment of the human eye. In front of the lens is the iris, which regulates the amount of light entering into the eye. The lens is suspended in place by the suspensory ligament of the lens, a ring of fibrous tissue that attaches to the lens at its equator and connects it to the ciliary body. Posterior to the lens is the vitreous body, which, along with the aqueous humor on the anterior surface, bathes the lens.
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The eyes of members of the Strombus family are positioned at the ends of eye stalks and typically have a diameter of about 1.5-2.5 mm, which is large compared to their body size. The eye stalks extend from two notches in the shell. The eye of Strombus contains a spherical lens, a cornea, a pupil with a pigmented iris surrounding it, a vitreous body, and a cup- shaped retina. In contrast, some other gastropods only possess small open eyes containing a gelatinous substance.
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Partheite’s habit is fibrous and radial and is rarely found in distinct crystals. Depending on where it is found, partheite can have transparent a white color or dark blue color but has a white streak regardless of which specimen is used. It has a vitreous luster and cleavage plains at {100} {110} {010} with a hardness of 4 on the Mohs scale. Its space group is C2/c with a = 21.59(3), b = 8.78(1), c = 9.31(2) Å. β = 91.55(2) and Z = 4.
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184x184px Intravitreal injection is the method of administration of drugs into the eye by injection with a fine needle. The medication will be directly applied into the vitreous humor. It is used to treat various eye diseases, such as age-related macular degeneration (AMD), diabetic retinopathy, and infections inside the eye such as endophthalmitis. As compared to topical administration, this method is beneficial for a more localized delivery of medications to the targeted site, as the needle can directly pass through the anatomical eye barrier (e.g.
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Bevacizumab, another medication for the same purpose, resulted in an incidence between 0.09% and 0.4%. Rhegmatogenous retinal detachment, when the retina breaks allowing vitreous fluid to leak into the subretinal space, resulting from intravitreal injection is rare, occurring at most in 0.67% of people. This fluid can cause sensory tissues to detach from the retina, thus losing their source of nutrition, and slowly killing the cells. Subconjunctival hemorrhage is the most common type of hemorrhage following intravitreal injection with a reported incidence of nearly 10% of injections.
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Brockley Whins is a station on the Tyne and Wear Metro, serving Brockley Whins in South Tyneside. The station joined the network in March 2002, following the opening of the extension from Pelaw to South Hylton. The station originally opened in June 1839, under the Brandling Junction Railway, and was named Boldon Colliery between March 1925 and July 1991. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison.
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CryoET is a specialized application of transmission electron cryomicroscopy (CryoTEM) in which samples are imaged as they are tilted, resulting in a series of 2D images that can be combined to produce a 3D reconstruction, similar to a CT scan of the human body. In contrast to other electron tomography techniques, samples are immobilized in non-crystalline ("vitreous") ice and imaged under cryogenic conditions (< −150 °C), allowing them to be imaged without dehydration or chemical fixation, which could otherwise disrupt or distort biological structures.
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Bacteria, Archaea, or viruses) are prepared in standard aqueous media and applied to an EM grid. The grid is then plunged into a cryogen (typically ethane) so efficient that water molecules do not have time to rearrange into a crystalline lattice. The resulting water state is called "vitreous ice" and preserves native cellular structures, such as lipid membranes, that would normally be destroyed by freezing. Plunge-frozen samples are subsequently stored and imaged at liquid- nitrogen temperatures so that the water never warms enough to crystallize.
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Embryonic cord-blood cells were induced into pluripotent stem cells using plasmid DNA. Using cell surface endothelial/pericytic markers CD31 and CD146, researchers identified 'vascular progenitor', the high- quality, multipotent vascular stem cells. After the iPS cells were injected directly into the vitreous of the damaged retina of mice, the stem cells engrafted into the retina, grew and repaired the vascular vessels. Labelled iPSCs-derived NSCs injected into laboratory animals with brain lesions were shown to migrate to the lesions and some motor function improvement was observed.
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He attended the Foulis Academy, founded in Glasgow in 1754 by the printmaking brothers Robert and Andrew Foulis, before moving to Dublin and then London. He developed a formula for making casts in vitreous paste and manufactured casts of antique carved gems. He also produced portrait medallions and among his sitters were many leading figures in Scottish intellectual life, such as Adam Smith, David Hume and Henry Raeburn. His medallions were popular when produced in Wedgwood jasper and were used by the Carron Company to be cast in iron.
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Stephen B. Whatley's commissioned paintings for the Tower of London, near Tower Hill Station In 2000 Whatley was commissioned by Historic Royal Palaces and the Pool of London Partnership, to undertake a series of 30 paintings for HM Tower of London. Many of the works were painted on location in and around the Tower. Others were inspired by various historical images. In the spring of 2001 the paintings were reproduced on steel vitreous enamel panels lining the walls of the Tower Hill pedestrian underpass, connecting Tower Hill Underground station to the Tower of London.
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Rarely, organisms may invade any structures of the eye (such as cornea, anterior chamber, vitreous and choroid, and optic nerve) and cause local inflammation and edema.In primary or secondary syphilis, invasion of the meninges may result in lymphocytic and plasma cell infiltration of perivascular spaces (Virchow-Robin spaces). The extension of cellular immune response to the brainstem and spinal cord causes inflammation and necrosis of small meningeal vessels. In tertiary syphilis, reactivation of chronic latent infection may result in meningovascular syphilis, arising from endarteritis obliterans of small, medium, or large arteries supplying the CNS.
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World Trade Center lung is the name for a collection of lung diseases found in people who worked at or were near to the Ground Zero site of the September 11 attacks in New York City. This cluster of diseases includes asthma, asthmatic bronchitis, terminal airways disease, sarcoidosis, and acute eosinophilic pneumonia. The particulate matter from the destruction of the towers contained fibrogenic and other harmful materials also found in responders' lungs, including fiberglass, asbestos, aluminum, calcium silicate, polycyclic aromatic hydrocarbons, silica, vitreous fibers, carbon nanotubes, fly ash, titanium, magnesium silicate, and phosphate.
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Ganciclovir In terms of the treatment of cytomegalovirus retinitis, oral valganciclovir, intravenous ganciclovir, IV foscarnet, and IV cidofovir are all efficient in the treatment of this condition. Also intravitreal injections, an injection of medicine into the vitreous near the retina, of foscarnet in concomitance with oral valganciclovir can be used for treatment as well. Often individuals with CMV retinitis will need surgery for either retinal detachment or intravitreal instillation of ganciclovir. Retinal detachment occurs in up to 29% of affected eyes, repair being most effective with endolaser and silicone oil endotamponade.
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Surgeons can remove or peel the membrane through the sclera and improve vision by 2 or more Snellen lines. Usually the vitreous is replaced at the same time with clear (BSS) fluid, in a vitrectomy. Surgery is not usually recommended unless the distortions are severe enough to interfere with daily living, since there are the usual hazards of surgery, infections, and a possibility of retinal detachment. More common complications are high intraocular pressure, bleeding in the eye, and cataracts, which are the most frequent complication of vitrectomy surgery.
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Many historical styles, for example mina'i ware, Imari ware, Chinese doucai and wucai, combine the two types of decoration.Vainker, 188-189, 192-193, 195 In such cases the first firing for the body, underglaze decoration and glaze is followed by the second firing after the overglaze enamels have been applied. The technique essentially uses powdered glass mixed with coloured pigments, and is the application of vitreous enamel to pottery; enamelled glass is very similar but on glass. Both these latter two are essentially painting techniques, and have been since they began.
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Jarosite crystals from Sierra Peña Blanca, Aldama, Chihuahua, Mexico (5.6 x 3.1 x 1.6 cm) Jarosite has a trigonal crystal structure and is brittle, with basal cleavage, a hardness of 2.5-3.5, and a specific gravity of 3.15-3.26. It is translucent to opaque with a vitreous to dull luster, and is colored dark yellow to yellowish-brown. It can sometimes be confused with limonite or goethite with which it commonly occurs in the gossan (oxidized cap over an ore body). Jarosite is an iron analogue of the potassium aluminium sulfate, alunite.
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In the late 1940s, she settled in Jaffa, studying drawing with Marcel Janco. Influenced by Janco's conviction that art must be combined with craftwork, Arion began to study enamel Vitreous enamel and was the first artist in Israel to produce abstract enamel works. Her enamel works decorated educational institutions throughout the country. Arion was married to the journalist and art lover Moshe Dagan (1909-1973) until his death. In 1958, Arion joined a group of artists headed by Marcel Janco that established Ein Hod Artists’ Village, where she lived until her death.
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Fellgate is a station on the Tyne and Wear Metro, serving Fellgate, Hedworth and Jarrow in South Tyneside. The station joined the network in March 2002, following the opening of the extension from Pelaw to South Hylton. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements.
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The Tyne and Wear Metro station at Tyne Dock is built to the east of the divergence, but on the former Stanhope and Tyne Railway route. The route via High Shields was closed in June 1981, with the Tyne and Wear Metro line to South Shields following the former route of the Stanhope and Tyne Railway. The station was refurbished in 2018, at a cost of £350,000. The refurbishment project involved the installation of white vitreous enamel panels, new seating and lighting, and improved security and accessibility, as well as resurfaced platforms.
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The forewings are greyish-cream-white suffused and freckled with cinnamon grey. There is a darker outwardly curved subbasal band and a sharply angled antemedian band just touching a vitreous patch, beyond this patch are three rather indistinct bands of darker coalescent lunate marks. The transverse band from the apex to the inner margin is much more basad and much more defined, also straighter and the submarginal cloud band is much fainter. The hindwings are similar, but only with one antemedian band and a brown and straight postmedian band.
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This condition is one of a spectrum of skeletal disorders caused by mutations in the COL2A1 gene. The protein made by this gene forms type II collagen, a molecule found mostly in cartilage and in the clear gel that fills the eyeball (the vitreous). Type II collagen is essential for the normal development of bones and other connective tissues. Mutations in the COL2A1 gene interfere with the assembly of type II collagen molecules, which prevents bones from developing properly and causes the signs and symptoms of this condition.
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Jabs has been on the editorial board of The Journal of Retinal and Vitreous Diseases, Ocular Immunology and Inflammation, American Journal of Ophthalmology, and Ophthalmic Epidemiology. He is the recipient of many awards including the Research to Prevent Blindness Olga Keith Weiss Scholar Award, Research to Prevent Blindness Lew R. Wasserman Merit Award, Research to Prevent Blindness Senior Scientific Investigator, American Academy of Ophthalmology Senior Achievement Award, Clinical Uveitis Research Award from the German Uveitis Patient Interest Group, EyeCare America, Lifetime Volunteer Physician Award, and European Uveitis Patient Interest Association (EUPIA) Uveitis Award.
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The type II and XI collagenopathies are a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. These disorders are caused by defects in type II or type XI collagen. Collagens are complex molecules that provide structure, strength, and elasticity to connective tissue. Type II and type XI collagen disorders are grouped together because both types of collagen are components of the cartilage found in joints and the spinal column, the inner ear, and the jelly- like substance that fills the eyeball (the vitreous).
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Acute postoperative endophthalmitis caused by S. lugdunensis is infrequently reported in clinical studies. Five cases of acute postcataract surgery endophthalmitis were taken from a multicenter prospective study conducted in four university-affiliated hospitals in France (2004 to 2005). These cases were characterized by severe ocular inflammation occurring with a mean delay of 7.6 days after cataract surgery, severe visual loss (hand motions or less in three cases), and dense infiltration of the vitreous. Each of these patients was initially treated by using a standard protocol with intravitreal (vancomycin and ceftazidime), systemic, and topical antibiotics.
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Diploë ( or ) is the spongy cancellous bone separating the inner and outer layers of the cortical bone of the skull. In the cranial bones, the layers of compact cortical tissue are familiarly known as the tables of the skull; the outer one is thick and tough; the inner is thin, dense, and brittle, and hence is termed the vitreous table. The intervening cancellous tissue is called the diploë. In certain regions of the skull this becomes absorbed so as to leave spaces filled with liquid between the two tables.
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Dennis James plays the Franklin Glass Armonica at the Poncan Theatre in Ponca City, Oklahoma on April 2, 2011. James plays the Franklin glass armonica and has collected other vitreous music instruments including several Francis Hopkinson Smith's 19th century Grand Harmonicons, one of the few surviving Beyer 18th c. Glass-cords, and modern glass instrument inventions such as verrophone, the cristal d' Baschet, along with a wide variety of glass flutes and glass bells. He is currently constructing an expanded version of the French Bouteillophone creating a touring continuo instrument for 18th c.
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All proper uses of the term "enamel" refer to glass made into some flexible form, put into place on an object in another material, and then melted by heat to fuse them with the object. It is called vitreous enamel or just "enamel" when used on metal surfaces, and "enamelled" overglaze decoration when on pottery, especially on porcelain. Here the supporting surface is glass. All three versions of the technique have been used to make brush-painted images, which on glass and pottery are the normal use of the technique.
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Virginia–Maryland Regional College of Veterinary Medicine From closest to farthest from the vitreous body: # Inner limiting membrane – basement membrane elaborated by Müller cells. # Nerve fibre layer – axons of the ganglion cell bodies (note that a thin layer of Müller cell footplates exists between this layer and the inner limiting membrane). # Ganglion cell layer – contains nuclei of ganglion cells, the axons of which become the optic nerve fibres, and some displaced amacrine cells. # Inner plexiform layer – contains the synapse between the bipolar cell axons and the dendrites of the ganglion and amacrine cells.
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Frizzled proteins also play key roles in governing cell polarity, embryonic development, formation of neural synapses, cell proliferation, and many other processes in developing and adult organisms. These processes occur as a result of one of three signaling pathways. These include the canonical Wnt/β-catenin pathway, Wnt/calcium pathway, and planar cell polarity (PCP) pathway. Mutations in the human frizzled-4 receptor have been linked to familial exudative vitreoretinopathy, a rare disease affecting the retina at the back of the eye, and the vitreous, the clear fluid inside the eye.
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Scleral buckle surgery is an established treatment in which the eye surgeon sews one or more silicone bands (or tyres) to the sclera (the white outer coat of the eyeball). The bands push the wall of the eye inward against the retinal hole, closing the break or reducing fluid flow through it and reducing the effect of vitreous traction thereby allowing the retina to re-attach. Cryotherapy (freezing) is applied around retinal breaks prior to placing the buckle. Often subretinal fluid is drained as part of the buckling procedure.
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XPCS experiments have the advantage of providing us with the information of dynamical properties of materials (e.g. vitreous materials), while other experimental techniques can only provide information about the static structure of the material. This technique is based on the generation of a speckle pattern by the scattered coherent light originating from a material where some spatial inhomogeneities are present. A speckle pattern is a diffraction limited structure factor, and is typically observed when laser light is reflected from a rough surface, or from dust particles performing Brownian motion in air.
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Spherulites in rhyolitic ash, Hailstone Trail, Echo Canyon, Chiricahua Mountains, Arizona. Spherulite markings on this snowflake obsidian Photomicrograph of rhyolite showing spherulitic texture (brown, between grey to white crystals). In petrology, spherulites () are small, rounded bodies that commonly occur in vitreous igneous rocks. They are often visible in specimens of obsidian, pitchstone and rhyolite as globules about the size of millet seed or rice grain, with a duller luster than the surrounding glassy base of the rock, and when they are examined with a lens they prove to have a radiate fibrous structure.
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Treatment typically consists of removal of the larva and then prevention of secondary bacterial infections. If the warble is accessible, a specialist can remove the larva by depositing petroleum jelly over the breathing hole of the parasite; this causes the larva to emerge for air and enable easier removal by the specialist. Larvae within or near the eye will sometimes require surgery for removal. Larvae that die within the vitreous humor of the eye do not need to be removed, they will be broken down and absorbed by natural chemical processes within the host.
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Lustre may be vitreous, greasy or silky. Colours range from white to grey, yellow to green, and brown to black, and are often splotchy or veined. Many are intergrown with other minerals, such as calcite and dolomite. Occurrence is worldwide; New Caledonia, Canada (Quebec), US (northern California, Rhode Island, Connecticut, Massachusetts, Maryland and southern Pennsylvania), Afghanistan, Britain (the Lizard peninsula in Cornwall), Ireland, Greece (Thessaly), China, Russia (Ural Mountains), France, Korea, Austria (Styria and Carinthia), India (Assam, and Manipur), Myanmar (Burma), New Zealand, Norway and Italy are notable localities.
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In the early 1700s, French chemist Charles François du Fay found that if a charged gold-leaf is repulsed by glass rubbed with silk, then the same charged gold-leaf is attracted by amber rubbed with wool. From this and other results of similar types of experiments, du Fay concluded that electricity consists of two electrical fluids, vitreous fluid from glass rubbed with silk and resinous fluid from amber rubbed with wool. These two fluids can neutralize each other when combined. American scientist Ebenezer Kinnersley later also independently reached the same conclusion.
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A gas-powered Rayburn Heatmaster The Rayburn is a type of stove similar in nature to the AGA and is manufactured in Telford in the United Kingdom, at the same factory as the AGA. The Rayburn was launched in 1946 with two hotplates, and one or two ovens and the ability to heat water. They improved upon existing designs by having easily adjustable oven temperatures (competitors were dependent upon the heat produced by the fire at their heart). The original Rayburn came in a cream vitreous enamel finish.
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The hyaloid artery is a branch of the ophthalmic artery, which is itself a branch of the internal carotid artery. It is contained within the optic stalk of the eye and extends from the optic disc through the vitreous humor to the lens. Usually fully regressed before birth, its purpose is to supply nutrients to the developing lens in the growing fetus. During the tenth week of development in humans (time varies depending on species), the lens grows independent of a blood supply and the hyaloid artery usually regresses.
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Many people with Stickler syndrome are very nearsighted (described as having high myopia) because of the shape of the eye. People with eye involvement are prone to increased pressure within the eye (ocular hypertension) which could lead to glaucoma and tearing or detachment of the light-sensitive retina of the eye (retinal detachment). Cataract may also present as an ocular complication associated with Stickler's Syndrome. The jelly-like substance within the eye (the vitreous humour) has a distinctive appearance in the types of Stickler syndrome associated with the COL2A1 and COL11A1 genes.
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78, 1975, OUP, The porous nature of (fired) biscuit earthenware means that it readily absorbs water, while vitreous wares such as porcelain, bone china and most stoneware are non-porous even without glazing. The temperature of biscuit firing is today usually at least 1000°C, although higher temperatures are common. The firing of the ware that results in the biscuit article causes permanent chemical and physical changes to occur. These result in a much harder and more resilient article which can still be porous, and this can ease the application of glazes.
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From as early as 750 years ago, the shadowy picture of the oldest German-Bohemian glass-maker family Friedrich emerges, who contributed greatly towards the creation of the world- famous Bohemian glass (also called Bohemian Crystal). In pre-Hussite times they produced amazing works of vitreous art near Daubitz, nowadays called Doubice. During the 16th and 17th centuries, as a result of the family’s development of their glass factory in Oberkreibitz, today Horní Chribská, Bohemian glass art enjoyed its first heyday. The expansion of this glass-maker family over many European countries is unparalleled.
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Outside East Asia, porcelain was manufactured only from the 18th century AD, and then initially as an expensive luxury. After it is fired, earthenware is opaque and non-vitreous,Combined Nomenclature of the European Union Published by the EC Commission in Luxembourg, 1987 soft and capable of being scratched with a knife. The Combined Nomenclature of the European Communities describes it as being made of selected clays sometimes mixed with feldspars and varying amounts of other minerals, and white or light-colored (i.e., slightly greyish, cream, or ivory).
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If the glass is extruded and cooled quickly at this temperature, it will be unable to form an ordered structure. In the polymer it forms SiO4 groups which are configured as a tetrahedron with the silicon atom at the center, and four oxygen atoms at the corners. These atoms then form a network bonded at the corners by sharing the oxygen atoms. The vitreous and crystalline states of silica (glass and quartz) have similar energy levels on a molecular basis, also implying that the glassy form is extremely stable.
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A collection plate is a notice plate fixed to a post box giving the times of collections and days of the week on which these collections are made. They are used extensively in the UK and Commonwealth countries as well as in most other postal administrations. British GPO collection plates were formerly made of vitreous enamel but today, they are more usually made of plastic. Collection plates are available in a variety of sizes to fit the various styles of post box in use in Commonwealth countries, principally pillar boxes, wall boxes and lamp boxes.
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The shell is very small, pupiform, vitreous. The whorls of the protoconch are smooth, deeply obliquely immersed in the first of the succeeding turns, above which only a portion of the tilted edge of the last volution projects. The early whorls of the teleoconch are well rounded, later ones flattened, somewhat excurved at the shouldered and beaded summit, and slightly contracted at the sutures. The whorls are marked by strong rounded, tuberculated axial ribs, which are decidedly protractive on all but the last whorl; on this they are only moderately protracted.
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Over time, Rambo noticed that blindness was a major problem in the region. Rambo was aware that for many years, people in the region had relied on "couchers," men who traveled with broken razor blades and performed relatively painless eye surgeries on partially blind patients. They would make an incision in the cornea and push the hardened lens back into the vitreous, restoring sight for the patient. However, 97% of patients lost use of the eye within months after surgery, and although couching was outlawed by the government, many people still consulted couchers for surgery.
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The shell's structure is distinctive: sinuous bands of blue, green, and rose iridescence are delineated by dark brown lines of conchiolin, a proteinaceous material that holds the shell together. The luster of abalone shell is silky rather than the near vitreous luster of polished ammolite, and the colors of the two materials do not closely approximate. However, some abalone shell has been dyed and given a transparent cap of synthetic quartz, forming a doublet in the same fashion as ammolite. These doublets are perhaps the most deceptive, and have also been used to imitate opal.
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Only two crystals of clearcreekite have ever been found. The longest of them is only 0.17mm and they exhibit tabular, subhedral habit. Clearcreekite is transparent with a pale greenish yellow color and streak, vitreous luster, good cleavage on {001} and it is brittle with uneven fracture. Since the crystals are too small to perform accurate measurements, the hardness of clearcreekite is estimated to be about 2 (because the crystals are highly sensitive to an electron beam) and its density (calculated from the ideal formula) is 6.96 g/cm3.
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The classic presentation is in the subhyaloidal space, which is beneath the posterior vitreous face and in front of the retina. In subarachnoid hemorrhage, 13% of patients have Terson's syndrome, which is associated with more severe SAH (higher Hunt-Hess score, a marker of severity), and risk of death is significantly increased. The first known report of the association was by the German ophthalmologist Moritz Litten in 1881. Still, French ophthalmologist Albert Terson's name is more commonly associated with the condition after a report by his hand from 1900.
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Canavesite occurs as a milky rosette-like aggregates of very thin [010] elongated fibers on surfaces and along fractures of ludwigite and magnetite skarns. Canavesite is an exceptionally rare secondary mineral that forms on the walls of the abandoned mine of Brosso, Italy and has formed since the mine was abandoned due to weathering of these ludwigite and magnetite skarns. Canvesite has a monoclinic P 2/m crystal structure and does not fluoresce under an ultraviolent light. It also has thin and slightly flexible vitreous fibers that are elongated parallel to [010].
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L. Lee and S. Quirke 2000, "Painting Materials," In: P.T. Nicholson and I. Shaw (eds.), Ancient Egyptian Materials and Technology, Cambridge: Cambridge University Press, 109; Moorey, P.R.S., 1985, Materials and Manufacture in Ancient Mesopotamia, BAR International Series 237, Oxford: Bar Publications, 134-135; Tite, M. S., et al., 1998, "The Use of Copper and Cobalt Colorants in Vitreous Materials in Ancient Egypt," In: S. Colinart and M. Menu (eds.), La Couleur Dans La Peinture et L'Émaillage de L'Égypte Ancienne, Bari: Edipuglia, 112-113. It is typically colored blue or green.
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The exact cause of this disease is unknown but it appears to affect individuals that are from Asian subcontinents. This disease tends to begin between the ages of 20-30 years and begins with unilateral peripheral retinal perivasculitis and peripheral retinal capillary non-perfusion. These are not normally recognized until the inflammation results in vitreous hemorrhage. This disease has been found to affect the second eye 50-90% of the time so there is a large chance that both eyes will begin to show signs of the disease.
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Buick was born in Arbroath, Angus, Scotland and moved to Detroit at the age of two with his family. He left school in 1869 and worked for a company which made plumbing goods. When the company ran into trouble in 1882, he and a partner took it over. At this time Buick began to show his promise as an inventor, producing many innovations including a lawn sprinkler, and a method for permanently coating cast iron with vitreous enamel which allowed the production of "white" baths at lower cost.
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The non- spherulitic glassy portion is sometimes perlitic, and these rocks are always brittle. Common crystals are olivine, augite and feldspar, with swarms of minute dusty black grains of magnetite. At the extreme edges the glass is often perfectly free from crystalline products, but it merges rapidly into the ordinary crystalline diabase, which in a very short distance may contain no vitreous base whatever. The spherulites may form the greater part of the mass, they may be a quarter of an inch in diameter and are occasionally much larger than this.
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Most eagles have excellent vision. Generally, eagles do not suffer from myopia (nearsightedness) and hyperopia (farsightedness); those who have these defects cannot hunt easily and eventually starve to death. Eagles have the unique feature of the pecten. Its function is not clearly understood, but the general belief is that it helps to nourish the retina, keeps it healthy without blood vessels, facilitates the fluids to flow through the vitreous body at an appropriate pressure, absorbs light to minimize any reflections inside the eye that could impair vision, helps perceive motion, creates a protective shade from the sun, and senses magnetic fields.
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The current station is on three levels, with entrances scattered throughout the street level in the surrounding area of Yonge Street and Eglinton Avenue. The concourse, fare gates and bus terminal as well as several shops are on the second level, and the Line 1 platform is on the lower level. Eglinton station is the only one of the original 1954 subway stations (Eglinton to Union on Line 1) to retain its original vitreous marble wall tiles. The other 1954 subway stations used similar wall tiles with variations in colour schemes, but at the other stations, the tiles were replaced because of deterioration.
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The length of the shell varies between 10 mm and 25 mm. (Original description) The white shell is elongated, acute, with a rounded vitreous white two-whorled protoconch and nine succeeding whorls. The spiral sculpture consists of three principal strong threads, enlarged where they pass over the ribs, four more on the base of the body whorl, about eight somewhat weaker ones on the siphonal canal, and a single one in front of and marginating the suture. The interspaces are wide, and upon them and over the fasciole are wound numerous fine, sharp, undulating, secondary spiral threads.
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Pecten oculi is abundantly filled with melanin granules which have been proposed to absorb stray light entering the bird eye to reduce background glare. Slight warming of pecten oculi due to absorption of light by melanin granules has been proposed to enhance metabolic rate of pecten. This is suggested to help increase secretion of nutrients into the vitreous body, eventually to be absorbed by the avascular retina of birds for improved nutrition. Extra-high enzymic activity of alkaline phosphatase in pecten oculi has been proposed to support high secretory activity of pecten to supplement nutrition of the retina.
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The third extracellular compartment, the transcellular, consists of those spaces in the body where fluid does not normally collect in larger amounts, or where any significant fluid collection is physiologically nonfunctional. Examples of transcellular spaces include the eye, the central nervous system, the peritoneal and pleural cavities, and the joint capsules. A small amount of fluid, called transcellular fluid, does exist normally in such spaces. For example, the aqueous humor, the vitreous humor, the cerebrospinal fluid, the serous fluid produced by the serous membranes, and the synovial fluid produced by the synovial membranes are all transcellular fluids.
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Gehlenite is one of five, isostructural tetragonal crystal system minerals in the melilite group. The tetrahedral linkage within the structure is similar to that of an aluminosilicate framework structureLouisnathan S (1969), Refinement of the crystal structure of gehlenite, Canadian Mineralogist, 10, 822-837 and was once considered a feldspathoid-like mineralBest MG (2003), Igneous and Metamorphic Petrology (2nd Ed), 398, 693, 702-703 due to silica undersaturation. Gehlenite has a Mohs hardness of 5-6, a vitreous to greasy lustre, distinct to good cleavage and is yellow brown, greenish grey or colourless. Its streak is white or grey- white.
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Lead oxide also facilitates solubility of other metal oxides and is used in colored glass. The viscosity decrease of lead glass melt is very significant (roughly 100 times in comparison with soda glass); this allows easier removal of bubbles and working at lower temperatures, hence its frequent use as an additive in vitreous enamels and glass solders. The high ionic radius of the Pb2+ ion renders it highly immobile and hinders the movement of other ions; lead glasses therefore have high electrical resistance, about two orders of magnitude higher than soda-lime glass (108.5 vs 106.5 Ω⋅cm, DC at 250 °C).
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This is followed by cordis ruptures which can cause mitral regurgitation and cardiac valvular diseases. \- With respect to Tnmd anti-angiogenic function in vivo, no major abnormalities in vessel formation and density were detected during tendon and retina development in the knockout mouse model. The latter finding is open for discussion because a study with recombinant tenomodulin has shown an obliterating vessel effect in retina when injected in vivo in the vitreous body. \- In ectopic tumour in vivo models, induced expression of TNMD in mouse melanoma cells resulted in suppression of tumour growth due to reduced vessel density.
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By the mid-18th century, French chemist Charles François de Cisternay Du Fay had discovered two forms of static electricity, and that like charges repel each other while unlike charges attract. Du Fay announced that electricity consisted of two fluids: vitreous (from the Latin for "glass"), or positive, electricity; and resinous, or negative, electricity. This was the "two-fluid theory" of electricity, which was opposed by Benjamin Franklin's "one-fluid theory" later in the century. In 1745, Jean-Antoine Nollet developed a theory of electrical attraction and repulsion that supposed the existence of a continuous flow of electrical matter between charged bodies.
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Another group of techniques give additional colouring, including lines and shading, by treating the surfaces of the coloured sheets, and often fixing these effects by a light firing in a furnace or kiln. These methods may be used over broad areas, especially with silver stain, which gave better yellows than other methods in the Middle Ages. Alternatively they may be used for painting linear effects, or polychrome areas of detail. The most common method of adding the black linear painting necessary to define stained glass images is the use of what is variously called "glass paint", "vitreous paint", or "grisaille paint".
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The Sutton Heritage Mosaic There is a large town centre mosaic measuring high and wide covering the whole of a three-storey wall in the town square near the Waterstone's bookshop. One of the largest examples of wall art in Britain, it was commissioned by the London Borough of Sutton to celebrate the borough's heritage. Created by artists Gary Drostle and Rob Turner, the mosaic was made from vitreous ceramic tesserae (small tiles made of glass and clay), and put in place in 1994. It was designed by Rob Turner, and shows several aspects of Sutton's heritage and local history.
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The University of Sunderland is also served by the station at St. Peter's – this being the nearest to The Sir Tom Cowie Campus at St. Peter's. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements. The station was used by 228,608 passengers in 2017–18, making it the fifth-least-used station on the Wearside extension.
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The covalent bonds in this material form extended structures, but do not form a continuous network. With cross-linking, however, polymer networks can become continuous, and a series of materials spans the range from Cross-linked polyethylene, to rigid thermosetting resins, to hydrogen-rich amorphous solids, to vitreous carbon, diamond-like carbons, and ultimately to diamond itself. As this example shows, there can be no sharp boundary between molecular and network covalent solids. Intermediate kinds of bonding: A solid with extensive hydrogen bonding will be considered a molecular solid, yet strong hydrogen bonds can have a significant degree of covalent character.
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For many years Fattorini and Sons were a prominent manufacturer of regalia for use in the different Orders of Freemasonry. Their factories and retail outlets in Yorkshire and Birmingham provided a regional competitor to the well-known London based regalia manufacturing companies. Many items of masonic regalia manufactured by Fattorini and Sons remain in current use, and bear the company's "signature-style" label. The North Wales Society of Architects' Presidential Chain of Office was designed in 1954 by Fattorini and Sons of hallmarked sterling silver finished in polished hard gold plate and vitreous enamelled in three colours.
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X-ray masks are composed of a transparent, low-Z carrier, a patterned high-Z absorber, and a metallic ring for alignment and heat removal. Due to extreme temperature variations induced by the X-ray exposure, carriers are fabricated from materials with high thermal conductivity to reduce thermal gradients. Currently, vitreous carbon and graphite are considered the best material, as their use significantly reduces side-wall roughness. Silicon, silicon nitride, titanium, and diamond are also in use as carrier substrates but not preferred, as the required thin membranes are comparatively fragile and titanium masks tend to round sharp features due to edge fluorescence.
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Type II collagen, which adds structure and strength to connective tissues, is found primarily in cartilage, the jelly-like substance that fills the eyeball (the vitreous), the inner ear, and the center portion of the discs between the vertebrae in the spine (nucleus pulposus). Three pro-alpha1(II) chains twist together to form a triple-stranded, ropelike procollagen molecule. These procollagen molecules must be processed by enzymes in the cell. Once these molecules are processed, they leave the cell and arrange themselves into long, thin fibrils that cross- link to one another in the spaces around cells.
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Theodore Aaron Litovitz (October 14, 1923 – May 1, 2006) was physics professor at The Catholic University of America and a prolific inventor. His inventions include a method to safely store nuclear waste, an electronic chip (EMX Biochip) to shield cell phone users from harmful electromagnetic radiation, and some of the early fiber optics now used in telecommunications. Litovitz held 25 patents, and was the co-founder of Catholic University's Vitreous State Laboratory where students used vitrification to immobilize radioactive waste. The process he pioneered is expected to save 20 years and $20 billion in cleanup costs at the government's Hanford Nuclear Reservation alone.
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Uranyl hydroxide is a hydroxide of uranium with the chemical formula UO2(OH)2 in the monomeric form and (UO2)2(OH)4 in the dimeric; both forms may exist in normal aqueous media. Uranyl hydroxide hydrate is precipitated as a colloidal yellowcake from oxidized uranium liquors near neutral pH. Uranyl hydroxide was once used in glassmaking and ceramics in the colouring of the vitreous phases and the preparation of pigments for high temperature firing. The introduction of alkaline diuranates into glasses leads to yellow by transmission, green by reflection; moreover these glasses become dichroic and fluorescent under ultraviolet rays.
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X-ray of the spine in a patient with spondyloepimetaphyseal dysplasia Spondyloepiphyseal dysplasia congenita is one of a spectrum of skeletal disorders caused by mutations in the COL2A1 gene.The protein made by this gene forms type II collagen, a molecule found mostly in cartilage and in the clear gel that fills the eyeball (the vitreous). Type II collagen is essential for the normal development of bones and other connective tissues. Mutations in the COL2A1 gene interfere with the assembly of type II collagen molecules, which prevents bones from developing properly and causes the signs and symptoms of this condition.
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The ancient architecture of the region of the Tigris–Euphrates river system dates back to the 10th millennium BC and lead to the development of urban planning, the courtyard house, and ziggurats. The basic and dominant building material was the mudbrick, which is still in use in the region for the construction of residential structures. Kiln-burnt bricks were coated with a vitreous enamel for purposes of decoration and bitumen functioned as cement. Palaces or temples were constructed on terraces as rooms usually grouped round quadrangles, with large doorways and the roofs rested on richly ornamented columns.
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The taxi driver who drove Captain Marsh to the airport told investigators that he seemed disoriented. At 04:50 local time a taxi dispatcher phoned JAL and warned of an intoxicated pilot. JAL responded by saying there seemed nothing unusual about the flight crew. Autopsies after the crash showed that the captain was heavily intoxicated, with the initial blood alcohol level 298 mg per 100 ml and a vitreous alcohol level of 310 mg per 100 ml taken twelve hours after the crash; the state of Alaska considers 100 mg per 100 ml legally unacceptable for driving.
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By Namikawa Sōsuke, Meiji era, c. 1900 Plique-à-jour (French for "letting in daylight") is a vitreous enamelling technique where the enamel is applied in cells, similar to cloisonné, but with no backing in the final product, so light can shine through the transparent or translucent enamel. It is in effect a miniature version of stained-glass and is considered very challenging technically: high time consumption (up to 4 months per item), with a high failure rate. The technique is similar to that of cloisonné, but using a temporary backing that after firing is dissolved by acid or rubbed away.
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Microscopically, the tumor cells recapitulate embryonic sensory retina or nonpigmented ciliary epithelium. The chalky grayish-white particles within the tumor mass correspond to foci of cartilage on histology; the semi-translucent membrane covering the lens in some tumors corresponds to spreading neoplastic cells. Tumor cells form a characteristic diktyomatous pattern, with folded cords and sheets resembling a fisherman's net. In early development of the retina, the medullary epithelial cells acquire polarity, such that a basement membrane associated with the vitreous forms the internal limiting membrane on one side, while terminal bars form the outer limiting membrane on the other side.
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The bird retina is devoid of blood vessels, perhaps to give unobscured passage of light for forming images, thus giving better resolution. It is, therefore, a considered view that the bird retina depends for nutrition and oxygen supply on a specialized organ, called the "pecten" or pecten oculi, located on the blind spot or optic disk. This organ is extremely rich in blood vessels and is thought to supply nutrition and oxygen to the bird retina by diffusion through the vitreous body. The pecten is highly rich in alkaline phosphatase activity and polarized cells in its bridge portion – both befitting its secretory role.
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A large sample of glassy carbon. Glassy carbon or vitreous carbon is a class of non-graphitizing carbon widely used as an electrode material in electrochemistry, as well as for high-temperature crucibles and as a component of some prosthetic devices. It was first produced by Bernard Redfern in the mid-1950s at the laboratories of The Carborundum Company, Manchester, UK. He had set out to develop a polymer matrix to mirror a diamond structure and discovered a resole (phenolic) resin that would, with special preparation, set without a catalyst. Using this resin the first glassy carbon was produced.
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Early progenitor RGCs will typically extend processes connecting to the inner and outer limiting membranes of the retina with the outer layer adjacent to the retinal pigment epithelium (RPE) and inner adjacent to the future vitreous humor. The cell soma will pull towards the RPE, undergo a terminal cell division and differentiation, and then migrate backwards towards the inner limiting membrane in a process called somal translocation. The kinetics of RGC somal translocation and underlying mechanisms are best understood in the zebrafish. The RGC will then extend an axon in the retinal ganglion cell layer, which is directed by laminin contact.
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Following the introduction of Tyne and Wear Metro services to Wearside in March 2002, Heworth is now the only remaining intermediate station served by rail services operating between Sunderland and Newcastle. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements. The station was used by 331,707 passengers in 2017–18, making it the fifth-most-used station on the Wearside extension.
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As a result, the concentration of the absorbing or scattering particles in the glaze could determine the degree of opacification. Generally speaking, the more different the refractive index between the particles and the glaze matrix, the larger the opacity. Similarly, the closer the particle size to the light wavelength (100-1000 nm for visible light) and the more irregular the surface, the larger the degree of opacification. Tin oxide remains in suspension in vitreous matrix of the fired glazes, and, with its high refractive index being sufficiently different from the matrix, light is scattered, and hence increases the opacity of the glaze.
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According to al-Haytham, this causes them to be refracted and weakened. He claimed that all the rays other than the one that hits the eye perpendicularly are not involved in vision. In al-Haytham's structure of the eye, the crystalline humor is the part that receives light rays from the object and forms a visual cone, with the object being perceived as the base of the cone and the center of the crystalline humor in the eye as the vertex. Other parts of the eye are the aqueous humor in front of the crystalline humor and the vitreous humor at the back.
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Hermann Kühn, 1967, "Blei-Zinn-Gelb und seine Verwendung in der Malerei", Farbe und Lack 73: 938-949 The use of tin(IV) oxide has been particularly common in glazes for earthenware, sanitaryware and wall tiles; see the articles tin-glazing and Tin-glazed pottery. Tin oxide remains in suspension in vitreous matrix of the fired glazes, and, with its high refractive index being sufficiently different from the matrix, light is scattered, and hence increases the opacity of the glaze. The degree of dissolution increases with the firing temperature, and hence the extent of opacity diminishes.’A Treatise On Ceramic Industries.’ E.Bourry.
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Optical Coherence Tomography can show areas of retinal thickening due to fluid accumulation from macular edema. In the second stage, abnormal new blood vessels (neovascularisation) form at the back of the eye as part of proliferative diabetic retinopathy (PDR); these can burst and bleed (vitreous hemorrhage) and blur the vision, because these new blood vessels are fragile. The first time this bleeding occurs, it may not be very severe. In most cases, it will leave just a few specks of blood, or spots floating in a person's visual field, though the spots often go away after a few hours.
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18th-century Delftware showing Chinese scenes Earthenware pottery including tin-glazed pottery, Victorian majolica, Delftware and faience, is made of clays or earths that give a soft paste. Earthenware is opaque, with a relatively coarse texture, while porcelain is semi-transparent, with a fine texture of minute crystals suspended in a transparent glassy ground. Industrial manufacturers of earthenware pottery biscuit-fire the body to the maturing range of the clay, typically , then apply glaze and glaze-fire the piece at a lower temperature of about . With very vitreous (glass-like) bodies the manufacturer may spray on the glaze.
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She calmly stares straight ahead as he brings the razor near her eye. Another cut occurs to the moon being overcome by the cloud, then a cut to a close up of a hand slitting the eye of an animal with the razor (which happens so quickly the viewer may believe it was the woman's eye), and the vitreous humour spills out from it. The subsequent title card reads "eight years later". A slim young man (Pierre Batcheff) bicycles down a calm urban street wearing what appears to be a nun's habit and a striped box with a strap around his neck.
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It is a sintered-quartz ceramic, with a surface vitrification which creates a bright lustre of various colours (blue-green being the most common). It has been defined as a "material made from powdered quartz covered with a true vitreous coating, usually in a transparent blue or green isotropic glass". Tjehenet is distinct from the crystalline pigment Egyptian blue.David Frederick Grose, The Toledo Museum of Art, Early Ancient Glass: Core-Formed, Rod-Formed, and Cast Vessels and Objects from the Late Bronze Age to the Early Roman Empire, 1600 BC to AD 50 (Manchester: Hudson Hills Press, 1999), 29.
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263x263px Typical sound of a flush toilet A typical flush toilet is a fixed, vitreous ceramic bowl (also known as a pan) which is connected to a drain. After use, the bowl is emptied and cleaned by the rapid flow of water into the bowl. This flush may flow from a dedicated tank (cistern), a high- pressure water pipe controlled by a flush valve, or by manually pouring water into the bowl. Tanks and valves are normally operated by the user, by pressing a button, pushing down on a handle, pulling a lever or pulling a chain.
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Schematic diagram of the human eye showing. Subconjunctival injection is a type of periocular route of injection for ocular drug administration by administration of a medication either under the conjunctiva or underneath the conjunctiva lining the eyelid. Using the subconjunctival injection bypasses the fatty layers of the bulbous conjunctiva and putting medications adjacent to sclera that is permeable to water, this will increase the penetration of the water-soluble drug into the eye.Eye: drug administration - subconjunctival injection This route is indicated for treatment of different lesions, such as in the cornea, sclera, anterior uvea and vitreous.
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In 1998, they released The Proximity Effect, their follow-up album, in Europe. Produced by Fred Maher, the album gained little commercial success in the US. Their record label, thinking the album lacked a hit like "Popular", had the band record several covers, including "Black & White" (The dBs) and "Why Are You So Mean to Me?" (Vitreous Humor), to use as singles. Tired of the requirements of the A&R; director, the band judged the album was perfect as-is (even though Elektra suggested the inclusion of an acoustic version of "Popular"), and broke their contract.
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The mineral is subopaque and vitreous, green to dark green or black in color and with a pale grey-green to pale brownish-green streak. It is biaxial (-) with refractive indices for natural material in the range nα = 1.652 to 1.676, nβ = 1.661 to 1.695, nγ = 1.666 to 1.706. Synthetic material has nα = 1.642 to 1.657, nγ = 1.653 to 1.672. An increase in magnesium content causes a decrease in refractive indices.Billings, M P (1928) American Mineralogist 13:287 The maximum birefringence (the difference in refractive index between light travelling through the crystal with different polarizations) is δ = 0.012 to 0.033.
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The quartz crystals exist in a fine-grained matrix, usually of micro-crystalline or felsitic structure. In specimens, the quartz appears as small rounded, clear, greyish, vitreous blebs, which are crystals, double hexagonal pyramids, with their edges and corners rounded by resorption or corrosion. Under the microscope they are often seen to contain rounded enclosures of the ground-mass or fluid cavities, which are frequently negative crystals with regular outlines resembling those of perfect quartz crystals. Many of the latter contain liquid carbonic acid and a bubble of gas that may exhibit vibratile motion under high magnifying powers.
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Traian V. Chirilă (born 14 February 1948 in Arad, Romania) is a Romanian- Australian polymer and organic chemist who is the inventor of AlphaCor, an artificial cornea in current clinical use throughout the world. His past and current research has contributed in several areas of biomaterials, polymer science and bioengineering, especially in the understanding of biomaterials and biocompatibility, in the development of polymers, hydrophilic sponges, artificial cornea, artificial vitreous substitutes and in topics such as interaction of laser radiation with polymers, photoresponsive polymers, supramolecular polymers, sustained release of bioactive agents, tissue engineering and the use of polymers in genetic therapies.
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Sideromelane from Hawaii Sideromelane is a vitreous basaltic volcanic glass, usually occurring in palagonite tuff, for which it is characteristic. It is a less common form of tachylite, with which it usually occurs together; however it lacks the iron oxide crystals dispersed in the glass, and therefore appearing transparent and pure, with yellow-brown color, instead of tachylite opaque black. It forms at higher temperatures and with more rapid chilling. Presence of sideromelane indicates higher temperature of the lava, and solidifying of the flow closer to the vent, probably by rapid quenching in a wet environment.
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Following the introduction of Tyne and Wear Metro services to Wearside in March 2002, Heworth is now the only remaining intermediate station served by rail services operating between Sunderland and Newcastle. Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist, Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements. The station was used by 319,224 passengers in 2017–18, making it the sixth-most-used station on the Wearside extension.
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The song "My Midget" from this session eventually made it to the band's final album, "Posthumous". Eventually, the stress of touring got to the band, culminating in lead singer Danny Pound puncturing his left lung twice. The band broke up shortly afterward in 1996. The members of Vitreous Humor would reunite not long after the original band broke up (minus Brooks Rice) and formed The Regrets,The Regrets who took the band's previous focus on clean-but-angular guitars and pushed it, as they could no longer be as noisy as they were when Brooks Rice was in the band.
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In addition to Adamantiades–Behçet's disease, Adamantiades described the interstitial keratitis in trachomatic patients to be a bacterial infection and classified the epidemic idiopathic hemeralopia. Further pioneer works were those on the marginal corneal degeneration, the posterior vitreous detachment, the measurement of the optic fundi and of the ocular pressure as well as investigations on trachoma, uveitis and the pathogenesis of glaucoma. Adamantiades compiled over 200 scientific papers (mostly in Greek and in French) many of which marked a new stage in his field. He also had a small contribution in the Center of Asia Minor Studies in Athens.
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On the other hand, when the vitreous remains adherent and pulling on the macular region in both eyes, then there may be a greater risk of developing a hole in the second eye. In very rare instances, trauma or other conditions lead to the development of a macular hole. In the vast majority of cases, however, macular holes develop spontaneously. As a result, there is no known way to prevent their development through any nutritional or chemical means, nor is there any way to know who is at risk for developing a hole prior to its appearance in one or both eyes.
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Ackery P.R. (1975) A guide to the genera and species of Parnassiinae (Lepidoptera:Papilionidae). Bull. Br. Mus. nat. Hist. (Ent.) 31, 4 pdf P. apollonius is recognizable especially by the sharply defined black submarginal spots of both wings; moreover, in males there is hardly a distinct greyish vitreous marginal band, the edge being however a little more sparsely scaled with white than the disc and only anteriorly shaded with grey. Arrangement of spots as in the allied species; three costal spots beyond the cell, the central one being usually vestigial, the proximal or the distal one or both centred with red, the hindmarginal spot rarely quite black.
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Transmission electron microscopy images are projections of the object showing the distribution of density through the object, similar to medical X-rays. By making use of the projection-slice theorem a three- dimensional reconstruction of the object can be generated by combining many images (2D projections) of the object taken from a range of viewing angles. Proteins in vitreous ice ideally adopt a random distribution of orientations (or viewing angles), allowing a fairly isotropic reconstruction if a large number of particle images are used. This contrasts with electron tomography, where the viewing angles are limited due to the geometry of the sample/imaging set up, giving an anisotropic reconstruction.
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Anatomy of the avian eye The main structures of the bird eye are similar to those of other vertebrates. The outer layer of the eye consists of the transparent cornea at the front, and two layers of sclera — a tough white collagen fibre layer which surrounds the rest of the eye and supports and protects the eye as a whole. The eye is divided internally by the lens into two main segments: the anterior segment and the posterior segment. The anterior segment is filled with a watery fluid called the aqueous humour, and the posterior segment contains the vitreous humour, a clear jelly-like substance.
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The front of the RC. The Illinois Eye Institute (IEI) is the principal clinical training facility for ICO students and is located adjacent to the college. In addition to primary eye care, sub-specialty care is available including glaucoma, retina-vitreous, neuro-ophthalmic disorders, cornea-external disease, orbit-oculoplastics, pediatrics/strabismus-amblyopia and low vision rehabilitation. Additional service areas within the IEI include The Alfred and Sarah Rosenbloom Center on Vision and Aging, Diabetic Eye Center, and Bronzeville Pharmacy. The IEI serves as a center for clinical research involving eye and vision problems including glaucoma, age-related macular degeneration (ARMD), cornea and contact lenses, and pediatric eye disorders.
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For example, when liquid water starts freezing, the phase change begins with small ice crystals that grow until they fuse, forming a polycrystalline structure. In the final block of ice, each of the small crystals (called "crystallites" or "grains") is a true crystal with a periodic arrangement of atoms, but the whole polycrystal does not have a periodic arrangement of atoms, because the periodic pattern is broken at the grain boundaries. Most macroscopic inorganic solids are polycrystalline, including almost all metals, ceramics, ice, rocks, etc. Solids that are neither crystalline nor polycrystalline, such as glass, are called amorphous solids, also called glassy, vitreous, or noncrystalline.
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Metatorbernite (or meta-torbernite) is a radioactive phosphate mineral, and is a dehydration pseudomorph of torbernite. Chemically, it is a copper uranyl phosphate and usually occurs in the form of green platy deposits. It can form by direct deposition from a supersaturated solution, which produces true crystalline metatorbernite, with a dark green colour, translucent diaphaneity, and vitreous lustre. However, more commonly, it is formed by the dehydration of torbernite, which causes internal stress and breakage within the crystal lattice, resulting in crystals composed of microscopic powder held together using electrostatic force, and having a lighter green colour, opaque diaphaneity, and a relatively dull lustre.
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They were usually intimate gifts given within the family, or by hopeful males in courtship, but some rulers, such as James I of England, gave large numbers as diplomatic or political gifts. They were especially likely to be painted when a family member was going to be absent for significant periods, whether a husband or son going to war or emigrating, or a daughter getting married. The first miniaturists used watercolour to paint on stretched vellum, or (especially in England) on playing cards trimmed to the shape required. During the second half of the 17th century, vitreous enamel painted on copper became increasingly popular, especially in France.
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In contrast, the artwork produced at Talleres de Arte was made according to the highest standards of craftsmanship and material. The finest sacred metalwork produced at Talleres de Arte was the richest then produced in Spain , embellished with repoussage, set gemstones, carved ivory figures, vitreous enamels, and medallions, figurines and friezes worked in metal. But Granda also believed that humbler objects, produced for churches and monasteries without wealthy patrons, although lacking the splendor of richness must never lack the dignity of beauty. He wrote that it has more value that a man venerate a statue of Tanagra clay than a shapeless gold sculpture of decadent art.
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The inlet and exhaust ports were cast into the blocks, the valve seats were in the top face of the steel cylinder liners, which were screwed into the blocks. Using a rotating bevel gear-driven tower shaft coming up from the crankcase along the rear end of each cylinder bank, with the final drive for each cylinder bank's camshaft accommodated within a semicircular bulge at the rear end of each valve cover. Aluminium parts were coated in vitreous enamel to reduce leakage. All parts subject to wear, and those critical for engine ignition were duplicated: spark plugs for dual ignition reliability, valve springs, magnetos, etc.
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Remains of Barbara (painting by Ludomir Sleńdziński) Her remains were found in Vilnius Cathedral after a flood in 1931. To preserve her body during the long summer trip from Kraków to Vilnius, it was covered in a mixture of ash and burnt lime. While the wooden coffin rotted away, the lime hardened and formed a protective shell that preserved her bones rather well. She was buried with regal symbols (silver gilded crown, silver scepter, golden orb with a cross) and jewelry (long gold necklace, three gold rings; one of them, gifted to her by Sigismund Augustus, was covered with black vitreous enamel and had three stones – brilliant, ruby, and emerald).
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In architecture and decorative art, ornament is a decoration used to embellish parts of a building or object. Large figurative elements such as monumental sculpture and their equivalents in decorative art are excluded from the term; most ornament does not include human figures, and if present they are small compared to the overall scale. Architectural ornament can be carved from stone, wood or precious metals, formed with plaster or clay, or painted or impressed onto a surface as applied ornament; in other applied arts the main material of the object, or a different one such as paint or vitreous enamel may be used. 18th-century Rococo balcony, Bavaria.
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1973 Ostoja received a Fellowship from the Australian American Education Association to study art and technology in the U.S.A. He studied laser art and technology, using a newly developed material in his optical collages. 1974 Using several lasers, Ostoja designed sets and a special curtain for the complex work The Excursions of Mr. Brouček by Janáček, the first opera produced at the new Adelaide Festival Theatre complex. 1975 The artist's Laser - Chromasonics (1972) and Laser Chromasonic Tower Mark III exhibited for the Festival of Creative Art and Sciences, Canberra. Ostoja commissioned to design a vitreous enamel mural for the Earth Science building, University of Melbourne.
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In 1964 with plants in England, Canada, South Africa and Australia and sales in more than 70 different countries British Titan Products was able to advertise that it was the largest producer of titanium pigments in Europe with plants at Billingham and Grimsby and research laboratories at Stockton. Tioxide pigments were then used in all kinds of paints (in 14 different grades of Tioxide), industrial finishes, floor coverings, plastics and rubber; in addition in artificial textiles, delicate paper and cosmetics particularly soaps. They were also employed in vitreous enamels on whiteware and baths, printing inks and pale leathers and their polishes.BTP. The Times, Monday, Nov 16, 1964; pg.
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The close proximity to the M6 motorway has led to the creation of a large distribution and business park, with companies such as Tesco and ERF locating to the site. Approximately 300 people are employed at the Ideal Standard factory, which since 1937 has been making vitreous china sanitaryware. Tourism is one of the fastest growing industries in Cheshire, and Congleton East Council has recognised the importance of Middlewich's canals in its attempts to promote tourism in the borough. Visitors to the 2003 Middlewich Folk and Boat Festival were estimated to have spent £2.3 million in the town over the two days of the festival.
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Some other Arthropoda, such as some Myriapoda, rarely have any eyes other than stemmata at any stage of their lives (exceptions include the large and well-developed compound eyes of Scutigera). Behind each lens of a typical, functional stemma, lies a single cluster of photoreceptor cells, termed a retinula. The lens is biconvex, and the body of the stemma has a vitreous or crystalline core. Although stemmata are simple eyes, some kinds, such as those of the larvae of Lepidoptera and especially those of Tenthredinidae, a family of sawflies, are only simple in that they represent immature or embryonic forms of the compound eyes of the adult.
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Macular telangiectasia type 1 must be differentiated from secondary telangiectasis caused by retinal vascular diseases such as retinal venous occlusions, diabetic retinopathy, radiation retinopathy, sickle cell maculopathy, inflammatory retinopathy/Irvine–Gass syndrome, ocular ischemic syndrome/carotid artery obstruction, hypertensive retinopathy, polycythemia vera retinopathy, and localized retinal capillary hemangioma. In addition, Macular telangiectasia type 1 should be clearly differentiated from dilated perifoveal capillaries with evidence of vitreous cellular infiltration secondary to acquired inflammatory disease or tapetoretinal dystrophy. Less commonly, macular telangiectasis has been described in association with fascioscapulohumeral muscular dystrophy, incontinentia pigmenti, and familial exudative vitreoretinopathy with posterior pole involvement. Macular telangiectasia type 2 is commonly under- diagnosed.
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As part of the acquisition, the brass foundry and injection molding plant of Morgantown, West Virginia and the assembly and injection molding plant of Sheridan, Arkansas (were 700 and 250 workers were employed respectively) became part of Kohler. The Sterling and Accent brands were integrated into Kohler Kitchen & Bath family of products. After the acquisition, Kohler started expanding the offering of Sterling branded products adding in the following years, tube doors, shower doors, corner shower enclosures, bathing fixtures, vitreous china fixtures, and other bathroom accessories to the existing faucets line. On December 29, 1986, Sterling Faucet Co. announced the acquisition of Polar Stainless Products Inc.
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Many diseases of the eye, such as age-related macular degeneration (AMD) and diabetic retinopathy, damage the retina and cause blindness when blood vessels around the retina grow abnormally and leak fluid, causing the layers of the retina to separate. This abnormal growth is caused by VEGF, so bevacizumab has been successfully used to inhibit VEGF and slow this growth. Bevacizumab has been used by ophthalmologists in an off-label use as an intravitreal agent in the treatment of proliferative (neovascular) eye diseases, particularly for choroidal neovascular membrane (CNV) in AMD. The injection of 1.25–2.5 mg of bevacizumab into the vitreous cavity has been performed without significant intraocular toxicity.
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Unilever registered the Fabergé name as a trademark across a wide range of merchandise internationally and granted licenses to third parties to make and sell a range of products ranging from custom jewelry to spectacles under the Fabergé name. However, it also continued to sell perfume and toiletries branded Fabergé. In pop culture the name Fabergé became synonymous with the ultimate in luxury when the Forbes Fabergé collection became widely publicised in the mid 1980s. In 1989, the German jewelry manufacture company Victor Mayer was given the exclusive licensing rights to produce heirloom quality Fabergé Eggs, jewelry and watches in 18KT gold and platinum with gem stones, vitreous enamel and diamonds.
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The dome is constructed of aluminium and the outer surface is clad with vitreous enamel- baked triangular steel panels decorated with a rosette of verses from the Qur'an. The main prayer hall spans two levels, is fully carpeted and air conditioned, and is one of the largest such spaces in the world. The upper gallery of the prayer hall is reserved for female worshippers, and the ground floor contains the reception area, administrative offices, conference rooms, a library, and lecture rooms. The mosque has the capacity to accommodate 12,600 worshippers and is large enough that on a clear day it can be seen from some vantage points in Kuala Lumpur.
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The middle layer, known as the vascular tunic or uvea, consists of the choroid, ciliary body, pigmented epithelium and iris. The innermost is the retina, which gets its oxygenation from the blood vessels of the choroid (posteriorly) as well as the retinal vessels (anteriorly). The spaces of the eye are filled with the aqueous humour anteriorly, between the cornea and lens, and the vitreous body, a jelly-like substance, behind the lens, filling the entire posterior cavity. The aqueous humour is a clear watery fluid that is contained in two areas: the anterior chamber between the cornea and the iris, and the posterior chamber between the iris and the lens.
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Laser coagulation has been used in people with sickle cell retinopathy. A 2015 Cochrane review found two clinical trials conducted in the 1980s using three approaches - one single-center trial employed sectoral scatter laser photocoagulation using an argon laser; and in the second, two-center trial focused on feeder vessel coagulation, one center used an argon laser and the other used a xenon arc laser. Based on weak evidence, it appears that laser coagulation may be effective in preventing visual loss and vitreous haemorrhage in this condition but that it does not have an effect on regression of proliferative sickle retinopathy or preventing the development of new vessel growth.
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Lawsonite has crystal habits of orthorhombic prismatic, which are crystals shaped like slender prisms, or tubular figures, which are form dimensions that are thin in one direction, both with two perfect cleavages. This crystal is transparent to translucent and varies in color from white to pale blue to colorless with a white streak and a vitreous or greasy luster. It has a relatively low specific gravity of 3.1g/cm3, and a pretty high hardness of 7.5 on Mohs scale of hardness, slightly higher than quartz. Under the microscope, lawsonite can be seen as blue, yellow, or colorless under plane polarized light while the stage is rotated.
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Along with other stations on the line between Fellgate and South Hylton, the station is fitted with vitreous enamel panels designed by artist Morag Morrison. Each station uses a different arrangement of colours, with strong colours used in platform shelters and ticketing areas, and a more neutral palate for external elements. Pallion is the nearest station to the Northern Spire, a bridge over the River Wear, which is located about to the north of the station. The station was used by 92,060 passengers in 2017–18, making Pallion the least used station on the network – closely followed by St. Peter's (107,887), Bank Foot (109,284) and Bede (133,215).
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Povidone-iodine solution is applied to the conjunctiva at the site of injection. Another dose of local anesthetic may be given to the conjunctival surface again (for example, by placing a cotton swab soaked with the anesthetic drug solution over the targeted region), which is followed by the reapplication of PVP-I solution. The injection site is measured and marked with a measuring caliper or other devices. The patient is then told to look away from the injection site to show the quadrant to be injected, and the doctor inserts the needle at the target site in a single motion into the mid- vitreous cavity.
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It is produced by certain retinal cells. It is of rather similar composition to the cornea, but contains very few cells (mostly phagocytes which remove unwanted cellular debris in the visual field, as well as the hyalocytes of Balazs of the surface of the vitreous, which reprocess the hyaluronic acid), no blood vessels, and 98–99% of its volume is water (as opposed to 75% in the cornea) with salts, sugars, vitrosin (a type of collagen), a network of collagen type II fibres with the mucopolysaccharide hyaluronic acid, and also a wide array of proteins in micro amounts. Amazingly, with so little solid matter, it tautly holds the eye.
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Clinohumite's transparency ranges from transparent to translucent; its luster ranges from a dull vitreous to resinous. Its refractive index (as measured via sodium light, 589.3 nm) is as follows: α 1.631; β 1.638-1.647; γ 1.668;, with a maximum birefringence of 0.028 (biaxial positive). Under shortwave ultraviolet light, some clinohumite may fluoresce an orangy yellow; there is little to no response under longwave UV. The Taymyr material is reported to be a dark reddish brown while the Pamir material is a bright yellow to orange or brownish orange. The Pamir material also has a hardness slightly greater than 6, a lower specific gravity (3.18), and higher maximum birefringence (0.036).
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Antlerite is a greenish hydrous copper sulfate mineral, with the formula Cu3(SO4)(OH)4. It occurs in tabular, acicular, or fibrous crystals with a vitreous luster. Originally believed to be a rare mineral, antlerite was found to be the primary ore of the oxidised zones in several copper mines across the world, including the Chuquicamata mine in Chile, and the Antler mine in Arizona, US from which it takes its name. It is chemically and optically similar in many respects to other copper minerals such as malachite and brochantite, though it can be distinguished from the former by a lack of effervescence in hydrochloric acid.
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A man consulting a Legible London sign The Legible London system comprises three sizes of sign, the "Monolith", "Midilith", and "Minilith", made of a mixture of vitreous enamel and vinyl printed glass materials within a stainless steel frame. The signs have a bright yellow stripe on top of the panels with the walking person icon, intended to make them easier to spot within the urban environment and when viewed from a distance. Two maps, a "planner map" and a "finder map", are displayed on the majority of signs, one per side. In some cases the signs are one-sided due to the constraints of their placement.
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Iron is only rarely used for feedthroughs, but frequently gets coated with vitreous enamel, where the interface is also a glass-metal bond. The bond strength is also governed by the character of the oxide layer on its surface. A presence of cobalt in the glass leads to a chemical reaction between the metallic iron and cobalt oxide, yielding iron oxide dissolved in glass and cobalt alloying with the iron and forming dendrites, growing into the glass and improving the bond strength. Iron can not be directly sealed to lead glass, as it reacts with the lead oxide and reduces it to metallic lead.
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However, because the researchers cannot definitively rule out the Cherenkov radiation effects as a probable cause of the LF experienced by astronauts, it seems likely that some LF may be the result of Cherenkov radiation effects in the eye itself, instead. The Cherenkov effect can cause Cherenkov light to be emitted in the vitreous body of the eye and thus allow the person to perceive the LF. Hence, it appears that the LF perceived by astronauts in space have different causes. Some may be the result of actual light stimulating the retina, while others may be the result of activity that occurs in neurons along the visual pathway, producing phosphenes.
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Thelma Frazier was born in Gnadenhutten, Ohio, to Robert Frazier and Esther Eggenberg; her family was descended from early Moravian settlers. She grew up in New Philadelphia, Ohio. Encouraged by her mother, she went on to study at the Cleveland School of Art, where she trained in drawing, painting and design with Julius Mihalik and ceramics with R. Guy Cowan. She credited Cowan with introducing her to the medium of ceramics, telling an interviewer in 1952: “Ceramic sculpture, built directly of vitreous clay, fired and glazed, was a revolutionary idea to me. Clay, such a responsive medium, summons all one’s ingenuity and adventurous impulse.
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The room is in darkness, but she is illuminated in a soft white light! Several visitors have born witness to this phenomenon; likewise to a similar light which is seen under the door to the same room when, within there, it is pitch black. David Nash Ford's: Royal Berkshire History, Ghosts The Old Manor at Whitehouse Green is a small manor house built in 1685 and updated in the 20th Century. It is built of brick with vitreous headers and with an old tile gabled roof and in the initial category of listed building, Grade II. In like class is Burghfield Bridge (rebuilt in stone circa 1770).
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The Moscow Kremlin egg is by far the largest of the Fabergé eggs and was inspired by the architecture of the Dormition Cathedral, Moscow (Uspenski) in Moscow. This cathedral was where all the Tsars of Russia were crowned, including Nicholas II himself. The cathedral dome (in white opalescent vitreous enamel) is removable, and the remarkably crafted interior of the church can be seen. Its carpets, tiny enameled icons and high altar on an oval glass plate are made visible through four triple windows, surmounted by a gold cupola and flanked by two square, two circular stylized turrets, the former based on the Spassky Tower.
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Eales disease is a type of obliterative vasculopathy, also known as angiopathia retinae juvenilis, periphlebitis retinae, primary perivasculitis of the retina. It was first described by the British ophthalmologist Henry Eales (1852-1913) in 1880 and is a rare ocular disease characterized by inflammation and possible blockage of retinal blood vessels, abnormal growth of new blood vessels (neovascularization), and recurrent retinal and vitreal hemorrhages. This disease is identified by its three characteristic steps: vasculitis, occlusion, and retinal neovascularization, leading to recurrent vitreous hemorrhages and vision loss. Eales Disease with a characteristic clinical picture, fluorescein angiographic finding, and natural course is considered a specific disease entity.
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The hardness is 5.5–6.5, and the specific gravity is 3.4–3.7; luster is vitreous, being less frequently pearly on cleavage surfaces. The manganese is often partly replaced by iron, magnesium, calcium, and sometimes zinc, which may sometimes be present in considerable amounts; a greyish-brown variety containing as much as 20% of calcium oxide is called bustamite; fowlerite is a zinciferous variety containing 7% of zinc oxide. Pink rhodonite contrasting with black manganese oxides is sometimes used as gemstone material as seen in this specimen from Humboldt County, Nevada. The inosilicate (chain silicate) structure of rhodonite has a repeat unit of five silica tetrahedra.
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This blue flash or "blue glow" can also be attributed to Cherenkov radiation, if either water is involved in the critical system or when the blue flash is experienced by the human eye. Additionally, if ionizing radiation directly transects the vitreous humor of the eye, Cherenkov radiation can be generated and perceived as a visual blue glow/spark sensation. It is a coincidence that the color of Cherenkov light and light emitted by ionized air are a very similar blue; their methods of production are different. Cherenkov radiation does occur in air for high-energy particles (such as particle showers from cosmic rays) but not for the lower energy charged particles emitted from nuclear decay.
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Biological samples, and especially samples embedded in thin vitreous ice, are highly radiation sensitive, thus only low electron doses can be used to image the sample. This low dose, as well as variations in the metal stain used (if used) means images have high noise relative to the signal given by the particle being observed. By aligning several similar images to each other so they are in register and then averaging them, an image with higher signal to noise ratio can be obtained. As the noise is mostly randomly distributed and the underlying image features constant, by averaging the intensity of each pixel over several images only the constant features are reinforced.
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Crystallising in the tetragonal (I41/amd) crystal system, xenotime is typically translucent to opaque (rarely transparent) in shades of brown to brownish yellow (most common) but also reddish to greenish brown and gray. Xenotime has a variable habit: It may be prismatic (stubby or slender and elongate) with dipyramidal terminations, in radial or granular aggregates, or rosettes. A soft mineral (Mohs hardness 4.5), xenotime is--in comparison to most other translucent minerals--fairly dense, with a specific gravity between 4.4-5.1. Its lustre, which may be vitreous to resinous, together with its crystal system, may lead to a confusion with zircon (ZrSiO4), the latter having a similar crystal structure and with which xenotime may sometimes occur.
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Roman cage cup from the 4th century CE The history of glass-making dates back to at least 3,600 BC in Mesopotamia, however some claim they may have been producing copies of glass objects from Egypt. Other archaeological evidence suggests that the first true glass was made in coastal north Syria, Mesopotamia or Egypt. The earliest known glass objects, of the mid 2,000 BC, were beads, perhaps initially created as the accidental by-products of metal- working (slags) or during the production of faience, a pre-glass vitreous material made by a process similar to glazing. Glass products remained a luxury until the disasters that overtook the late Bronze Age civilizations seemingly brought glass-making to a halt.
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Brolucizumab, sold under the trade name Beovu, is a humanized single-chain antibody fragment for the treatment of neovascular (wet) age-related macular degeneration (AMD). The most common side effects are reduced visual acuity, cataract (clouding of the lens in the eye), conjunctival haemorrhage (bleeding at the front of the eye) and vitreous floaters (spots in the vision). The most serious side effects are blindness, endophthalmitis (an infection inside the eye), retinal artery occlusion (blockage of the artery in the retina) and retinal detachment (separation of the retina from the back of the eye). Brolucizumab was designed to attach to and block a substance called vascular endothelial growth factor A (VEGF-A).
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Until then the theory of Du Fay as to the vitreous and resinous electricity was generally adopted, but now Kinnersley showed beyond a doubt that the positive and negative theory was correct. From Boston, Kinnersley went to Newport, Rhode Island, and, in March 1752, repeated his lectures there and suggested how houses and barns might be protected from lightning. This was three months before the time that Franklin drew the electricity from the clouds. He then visited New York and lectured on the subject. In 1753, Kinnersley was elected chief master in the College of Philadelphia, and in 1755 he was appointed professor of English and oratory, holding the office until 1772, when, owing to failing health, he resigned.
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In 1974 Slater joined the Department of Archaeology, chaired by Professor Leslie Alcock, at University of Glasgow, as lecturer in archaeological sciences. Slater remained at the University of Glasgow until 1991 when she took up the Garstang Chair in Archaeology and became the first female professor of the University of Liverpool Department of Archaeology, Classics and Egyptology. Slater undertook extensive analytical research on copper metals, ceramics and other vitreous materials as part of major field work and excavation programmes in the UK, Italy, Greece, Turkey and Egypt. She had an interest in experimental archaeology and undertook experimental projects to study pyrotechnological processes and explore the processing of raw materials into completed artefacts.
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Arts and crafts jewelry also tended to favor materials with little intrinsic value that could be used for their artistic effects. Base metals, semi-precious stones like opals, moonstones and turquoise, misshapen pearls, glass and shell, and the plentiful use of Vitreous enamel, allowed jewelers to be creative and to produce affordable objects.Karlin, pp 89-90 Art nouveau jewelry from France and Belgium was also an important contributor to art jewelry. Worn by wealthy and artistically-literate clients, including courtesans of the Paris demimonde, art nouveau jewelry by Rene Lalique and Alphonse Mucha was inspired by symbolist art, literature and music, and a revival of the curvilinear and dramatic forms of the rococo period.
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The red reflex refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The reflex relies on the transparency of optical media (tear film, cornea, aqueous humor, crystalline lens, vitreous humor) and reflects off the fundus back through media into the aperture of the ophthalmoscope. The red reflex is considered abnormal if there is any asymmetry between the eyes, dark spots, or white reflex (Leukocoria). Generally it is a physical exam done on neonates and children by healthcare providers but occasionally occurs in flash photography seen when the pupil does not have enough time to constrict and reflects the fundus known as the red-eye effect.
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Industrial porcelain enamel (also known as glass lining, glass-lined steel, or glass fused to steel) is the use of porcelain enamel (also known as vitreous enamel) for industrial, rather than artistic, applications. Porcelain enamel, a thin layer of ceramic or glass applied to a substrate of metal, is used to protect surfaces from chemical attack and physical damage, modify the structural characteristics of the substrate, and improve the appearance of the product. Enamel has been used for art and decoration since the period of Ancient Egypt, and for industry since the Industrial Revolution. It is most commonly used in the production of cookware, home appliances, bathroom fixtures, water heaters, and scientific laboratory equipment.
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The reduced eye is an idealized model of the optics of the human eye. Introduced by Franciscus Donders, the reduced eye model replaces the several refracting bodies of the eye (the cornea, lens, aqueous humor, and vitreous humor) are replaced by an ideal air/water interface surface that is located 20 mm from a model retina. This, converts a system with six cardinal points (two focal points, two principal points and two nodal points) into one with three cardinal points (two focal points and one nodal point). The reduced eye model is used by medical students when studying refractive errors such as myopia and hyperopia (near- and far-sightedness) and by ophthalmologists to simplify corrective lens computations.
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Amorphous ice (non-crystalline or "vitreous" ice) is an amorphous solid form of water. Common ice is a crystalline material wherein the molecules are regularly arranged in a hexagonal lattice, whereas amorphous ice has a lack of long-range order in its molecular arrangement. Amorphous ice is produced either by rapid cooling of liquid water (so the molecules do not have enough time to form a crystal lattice), or by compressing ordinary ice at low temperatures. Although almost all water ice on Earth is the familiar crystalline ice Ih, amorphous ice dominates in the depths of interstellar medium, making this likely the most common structure for H2O in the universe at large.
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Eglinton station's Vitrolite-tiled walls are the last such station wall treatment left in the system. The original design of the oldest stations in the subway system, which are on the Yonge line (from Union to Eglinton), are mainly utilitarian and characterized by vitreous marble wall tiles and the use of the Toronto Subway font for station names. Eglinton Station is the only station to retain this wall treatment, though Queen Station retains a narrow band of original blue Vitrolite tiles near the ceiling at platform level. The design of the stations on the University line was mainly utilitarian and this style (sometimes referred to as "bathroom modern") was later used for Line 2 Bloor–Danforth as well.
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Crocoite is commonly found as large, well-developed prismatic adamantine crystals, although in many cases are poorly terminated. Crystals are of a bright hyacinth-red color, translucent, and have an adamantine to vitreous lustre. On exposure to UV light some of the translucency and brilliancy is lost. The streak is orange-yellow; Mohs hardness is 2.5–3; and the specific gravity is 6.0. Crocoite crystal structure It was discovered at the Berezovskoe Au Deposit (Berezovsk Mines) near Ekaterinburg in the Urals in 1766; and named crocoise by F. S. Beudant in 1832, from the Greek κρόκος (krokos), saffron, in allusion to its color, a name first altered to crocoisite and afterwards to crocoite.
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The fact that electrical effluvia could be transferred from one object to another, opened the theoretical possibility that this property was not inseparably connected to the bodies that were electrified by rubbing. In 1733 Charles François de Cisternay du Fay, inspired by Gray's work, made a series of experiments (reported in Mémoires de l'Académie Royale des Sciences), showing that more or less all substances could be 'electrified' by rubbing, except for metals and fluids and proposed that electricity comes in two varieties that cancel each other, which he expressed in terms of a two-fluid theory.Two Kinds of Electrical Fluid: Vitreous and Resinous – 1733. Charles François de Cisternay DuFay (1698–1739) . sparkmuseum.
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Another allegation concerns the reliability of blood tests carried out, which indicated Paul had been drinking before he took the controls of the car. The French investigators' conclusion that Paul was drunk was made on the basis of an analysis of blood samples, which were said to contain an alcohol level that (according to Jay's September 1997 report) was three times the French legal limit. This initial analysis was challenged by a British pathologist hired by Al-Fayed. In response, French authorities carried out a third test, this time using the more medically conclusive vitreous fluid from inside the eye, which confirmed the level of alcohol measured by blood and also showed Paul had been taking antidepressants.
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As the British Colour Council developed its services to industry it became apparent that the bias in the dictionary towards colours for textiles made it less relevant as a standard reference work for Interior Decoration. Some colours which were suitable for clothes were insufficiently permanent for application to carpets, curtains and upholstery fabric, while others were technically impracticable for use in the pottery and glass industries, in porcelain and vitreous enamel or in the making of paint or other materials used in decorating. In 1949 the Council published the "Dictionary of Colours for Interior Decoration". This work consisted of three volumes, two of colour samples and the other a slim list of names and a history of the colours.
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A number of cytokines such as tumor necrosis factor alpha (TNFα), transforming growth factor beta 2 (TGFβ2), platelet derived growth factor (PDGF) and interleukins have been shown to play a role in PVR progression. TGFβ2 levels have been shown to be elevated up to three times normal during the progression of PVR. TGFβ2 is the most predominant isoform in the eye and is secreted as a latent inactive peptide into the vitreous by epithelial cells of the ciliary body and the lens epithelium and is also produced by the RPE cells and the Muller cells of the retina. TGFβ2 is known to induce EMT in RPE cells and fibrosis in the eye.
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In a nuclear power plant's reactor housing, the role of the sump will be to collect any overflow of primary loop coolant; in this case, monitoring and pumping of the sump is an important part of the reactor's safety system. In mining the term sump is used to describe a hole made in the floor of a level in a working, in the direction of a lower level either for the purpose of testing the trend of an ore vein, or for the purpose of ventilation. The equivalent of a sump on a boat is the bilge. In the human eye, the vitreous humour has a minor role as a metabolic sump.
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The Institute of Metals then merged in 1993 with The Institute of Ceramics and The Plastics and Rubber Institute (PRI) to form the Institute of Materials (IoM). The PRI was itself a merger of The Plastics Institute and the Institution of the Rubber Industry (known as the IRI) during the 1980s, a reflection of the declining UK rubber manufacturing industry during this period. IOM3 was formed from the merger of the Institute of Materials and the Institution of Mining and Metallurgy (IMM) in June 2002. More recent mergers include the Institute of Packaging (2005), the Institute of Clay Technology (2006) the Institute of Wood Science (2009) and the Institute of Vitreous Enamellers (2010).
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The biological sample can be stained using either a negative staining material such as uranyl acetate for bacteria and viruses, or, in the case of embedded sections, the specimen may be stained with heavy metals, including osmium tetroxide. Alternately samples may be held at liquid nitrogen temperatures after embedding in vitreous ice. In material science and metallurgy the specimens can usually withstand the high vacuum, but still must be prepared as a thin foil, or etched so some portion of the specimen is thin enough for the beam to penetrate. Constraints on the thickness of the material may be limited by the scattering cross-section of the atoms from which the material is comprised.
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For the academic year 1950–1951 he was a visiting professor at the Wilmer Eye Institute, where he performed experiments on rabbits to study the effects of steroids on corneal scarring and also taught optics and refraction to the residents. In September 1952 he reported on a newly defined syndrome (cystoid macular edema aka Irvine-Gass syndrome) following cataract surgery, based upon a clinical study of 2000 patients. In the late 1950s he studied surgical diathermy for retinal detachments and its effects on the vitreous and other ocular tissues. At age 63 he retired from surgical practice and moved to Laguna Beach, where he became a consulting ophthalmologist and a member of U.C. Irvine's clinical faculty.
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However, these results were not reproducible and amendments were published in Nature just two years later informing that the beam resistance was less significant than initially anticipated. The protection gained at 4 K was closer to "tenfold for standard samples of L-valine," than what was previously stated. In 1981, Alasdair McDowall and Jacques Dubochet, scientists at the European Molecular Biology Laboratory, reported the first successful implementation of cryo-EM. McDowall and Dubochet vitrified pure water in a thin film by spraying it onto a hydrophilic carbon film that was rapidly plunged into cryogen (liquid propane or liquid ethane cooled to 100 K). The thin layer of amorphous ice was less than 1 µm thick and an electron diffraction pattern confirmed the presence of amorphous/vitreous ice.
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In 1746, he showed that the capacity of the Leyden jar could be increased by coating it inside and out with lead foil. In the same, year he proposed that the two types of electricity--vitreous and resinous-- posited by DuFay were actually a surplus (a positive charge) and a deficiency (a negative charge) of a single fluid which he called electrical ether, and that the quantity of electrical charge was conserved. He acknowledged that the same theory had been independently developed at the same time by Benjamin Franklin--the two men later became allies in both scientific and political matters. On 14 August 1747 he made an experiment to conduct electricity through a 6,732 foot long wire at Shooter's Hill in London.
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The medico, who had an alcohol problem, had clearly been negligent in his treatment of the patient (he was attempting a cure of a mental problem with an uncontrolled form of deep sleep therapy), but was exonerated over a technicality: that Paxton had supplied a different species of morphine from that which he prescribed. According to one account, for some reason he refused to pay the first corporation rates so a large jar of some drug was seized from his shop and sold at auction. In March 1844 he reopened as "Paxton's Medical Hall" opposite "Club House" in Hindley Street, with "Paxton Hall" emblazoned across its facade in letters of vitreous china.The Medical Hall South Australian 12 March 1844 p.
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Widely discussed in the LiDAR arena is the wavelength of the signal. While some players have opted for 830-to-940-nm wavelengths to take advantage of available optical components, companies (including Blackmore, Neptec, Aeye, and Luminar) are increasingly turning to longer wavelengths in the also-well- served 1550-nm wavelength band, as those wavelengths allow laser powers roughly 100 times higher to be employed without compromising public safety. Lasers with emission wavelengths longer than ≈ 1.4 μm are often called “eye- safe” because light in that wavelength range is strongly absorbed in the eye's cornea, lens and vitreous body and therefore cannot damage the sensitive retina). • LiDAR-based sensor technology can provide a high level of object identification and classification with three-dimensional (3D) imaging techniques.
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The amounts and kinds of metals or other materials found in the e-cigarette vapor is based on the material and other manufacturing designs of the heating element. E-cigarettes devices could be made with ceramics, plastics, rubber, filament fibers, and foams, of which some can be found in the e-cigarette vapor. E-cigarette parts, including exposed wires, wire coatings, solder joints, electrical connectors, heating element material, and vitreous fiber wick material, account for the second significant source of substances, of which users may be exposed. Metal and silicate particles, some of which are at higher levels than in traditional cigarettes, have been detected in e-cigarette aerosol resulting from degradation from the metal coil used to heat the solution.
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Both the haptics (blue color) are externalized under the scleral flaps. They will be tucked into scleral pockets and fibrin glue applied to seal them The glued IOL technique consists of making two partial thickness scleral flaps exactly 180° apart approximately 2.5 mm by 2.5 mm followed by a sclerotomy with a 20-gauge needle 1 mm from the limbus. A 23 G vitrectomy cutter is introduced from the sclerotomy site and thorough vitrectomy is done removing all the vitreous tractions. A corneal tunnel is fashioned and then a 23-gauge Glued IOL forceps is passed through the sclerotomy site and the tip of the leading haptic of IOL is grasped, which is then externalised and brought out onto the ocular surface (Fig 3).
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Blue faience saucer and stand, New Kingdom (1400-1325 BC) Egyptian blue is closely related to the other vitreous materials produced by the ancient Egyptians, namely glass and Egyptian faience, and it is possible that the Egyptians did not employ separate terms to distinguish the three products from one another. Although it is easier to distinguish between faience and Egyptian blue, due to the distinct core of faience objects and their separate glaze layers, it sometimes is difficult to differentiate glass from Egyptian blue due to the very fine texture that Egyptian blue occasionally could have. This is especially true during the New Kingdom, as Egyptian blue became more refined and glassy and continued as such into the Greco-Roman period.Nicholson, P.T. & Peltenburg, E. 2000, Egyptian faience.
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As the concentration of trace elements that serve as coloring agents changes, there will be areas of less or more color in different parts of the crystal. When the crystal is sliced perpendicular to the c axis, triangular zoning may be seen, together with a trigonal star that radiates from the centre of the crystal, with the three rays directed towards the corners of the triangular color patterns.extraLapis English No 3: Tourmaline (2002) The pink-red color is due to the manganese Mn3+ content, and the green color is due to intervalence charge transfer transactions between iron Fe2+ and titanium Ti4+. The streak is white to very light brown, lighter than the mass color, luster is vitreous and crystals are transparent to translucent.
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The most common symptoms of PIOL include blurred or decreased vision due to tumor cells in the vitreous. Most cases of PIOL eventuate to central nervous system involvement (PCNSL) while only 20% of PCNSL lead to intraocular (PIOL) involvement. PIOL and PCNSL remain enigmas because both structures are immunologically privileged sites (the brain sits behind the blood–brain barrier and the retina sits behind the blood-retinal barrier) and so do not normally have immune cells trafficking through these structures. What is more, while the vast majority of PCNSL in patients with acquired immune deficiency syndrome (AIDS) is related to the Epstein-Barr virus (EBV), the development of PCNSL and PIOL in immunocompetent patients is unknown and shows no general relation to infectious DNAs.
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Diagnosis is made by biopsy, usually by duodenal endoscopy, which reveals PAS-positive macrophages in the lamina propria containing nonacid-fast, Gram-positive bacilli. Immunohistochemical staining for antibodies against T. whipplei has been used to detect the organism in a variety of tissues, and a polymerase chain reaction-based assay is also available, which can be confirmatory if performed on blood, vitreous fluid, synovial fluid, heart valves, or cerebrospinal fluid.SJ McPhee, MA Papadakis. Current Medical Diagnosis and Treatment 2012 McGraw-Hill PCR of saliva, gastric or intestinal fluid, and stool specimens is highly sensitive, but not specific enough, indicating that healthy individuals can also harbor the causative bacterium without the manifestation of Whipple's disease, but that a negative PCR is most likely indicative of a healthy individual.
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They have a camera-type eye which consists of an iris, a circular lens, vitreous cavity (eye gel), pigment cells, and photoreceptor cells that translate light from the light-sensitive retina into nerve signals which travel along the optic nerve to the brain. For the past 140 years, the camera-type cephalopod eye has been compared with the vertebrate eye as an example of convergent evolution, where both types of organisms have independently evolved the camera-eye trait and both share similar functionality. Contention exists on whether this is truly convergent evolution or parallel evolution. Unlike the vertebrate camera eye, the cephalopods' form as invaginations of the body surface (rather than outgrowths of the brain), and consequently they lack a cornea.
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In 1990 Poland's large steel plant in Kraków (formerly the Lenin Steelworks) was renamed to Tadeusz Sendzimir Steelworks. Joseph Stanislaus Ostoja-Kotkowski (1922–1994) was famous artist that worked with photography, film-making, theater, design, fabric design, murals, kinetic and static sculpture, stained glass, vitreous enamel murals, op-collages, computer graphics and also laser art. He was a pioneer regarding laser kinetics and "sound and image". Tadeusz Ostaszewski (1918–2003) was professor of fine arts in University of Krakow, Adam Kozłowiecki (1911–2007) was Archbishop of the Archdiocese of Lusaka in Zambia, Andrzej Zagórski (1926–2007) was devoted officer of Armia Krajowa that wrote over 250 publications about Polish underground resistance and Kazimierz Tumiłowicz (1932–2008) was creator of Siberian association of remembrance and social worker in Greater Poland.
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The length of the shell attains 9.5 mm, its diameter 3.5 mm. (Original description) The waxen white shell has a vitreous white smooth rounded protoconch of nearly two whorls and eight subsequent sculptured whorls. The spiral sculpture consists of an undulated more or less nodulous narrow band in front of the suture, separated by the fasciole from an angulation, which in the upper whorls is peripheral, and on the body whorl forms a well marked shoulder. In front of this on the upper whorls are one to three, and on the body whorl between the angle and the anterior end of the siphonal canal about a dozen, small sharply elevated threads with much wider interspaces, threads which are, where they intersect the transverse ridges, modified by small sharp nodulations.
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Embedding the samples in ice below the sublimation temperature was a possibility that was contemplated early on, but water tends to arrange into a crystalline lattice of lower density upon freezing and this can destroy the structure of anything that is embedded in it. In the early 1980s, several groups studying solid state physics were attempting to produce vitreous ice by different means, such as high pressure freezing or flash freezing. In a seminal paper in 1984, the group led by Jacques Dubochet at the European Molecular Biology Laboratory showed images of adenovirus embedded in a vitrified layer of water. This paper is generally considered to mark the origin of Cryo-EM, and the technique has been developed to the point of becoming routine at numerous laboratories throughout the world.
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However, the oxygens are always bridges between the zirconium and phosphate and one oxygen is never shared between two the same groups and half of the oxygens are also shared with K groups. The pattern of Two zirconium polyhedron, one potassium polyhedron, two zirconium polyhedron, and the oxygen and phosphate groups filling in the gaps creates kosnarite's unique crystal structure. Depending on the impurities present in the sample, the color of kosnarite can range from pale blue to blue-green depending on the amount of iron, manganese, or other impurities, and kosnarite can sometimes appear to be nearly colorless. Other physical properties of kosnarite include its vitreous lust, non-fluorescence, a hardness of 4.5 on the mohs scale of mineral hardness, conchoidal fracturing, and perfect cleavage in the {102} direction.
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"When ... decorated by means of coloured glazes, if these are transparent, it ought to be called Palissy ware [popularly 'majolica'], from the name of the great artist who used these for his beautiful works. Messrs. Wedgwood, George Jones, and a few other makers of less importance, are reproducing it more or less successfully." are shiny and either translucent or opaque after firing. Three other traditional techniques are tin-glazed (in fact this is lead glaze with a small amount of tin added), which coats the ware with an opaque white glaze suited for overglaze brush-painted colored enamel designs; salt glaze pottery, also often stoneware; and the feldspathic glazes of Asian porcelain. Modern materials technology has invented new vitreous glazes that do not fall into these traditional categories.
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M P Snead, D R J Snead, A J Richards, J B Harrison, A V Poulson, A H C Morris, R M Sheard, J D Scott; Clinical, histological and ultrastructural studies of the posterior hyaloid membrane; "Eye", July 2002, Volume 16, Number 4, Pages 447-453. The anterior hyaloid membrane separates the front of the vitreous from the lens. Andres Bernal, Jean-Marie Parel, Fabrice Manns; Evidence for posterior zonular fiber attachment on the anterior hyaloid membrane; "Investigative Ophthalmology and Visual Science" 2006, 47, 4708-4713. Bernal et al. describe it "as a delicate structure in the form of a thin layer that runs from the pars plana to the posterior lens, where it shares its attachment with the posterior zonule via Weigert’s ligament, also known as Egger’s line".
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Lichtenberg figure: high voltage dielectric breakdown in an acrylic polymer block Poly(methyl methacrylate) (PMMA), also known as acrylic, or acrylic glass, as well as by the trade names Crylux, Plexiglas acrylic, Acrylite, Astariglas, Lucite, Perclax, and Perspex, among several others (see below), is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass. The same material can be used as a casting resin or in inks and coatings, among many other uses. Although not a type of familiar silica-based glass, the substance, like many thermoplastics, is often technically classified as a type of glass (in that it is a non- crystalline vitreous substance) hence its occasional historic designation as acrylic glass. Chemically, it is the synthetic polymer of methyl methacrylate.
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Pyramids of French coffee cups and English pot-bellied > iron pans stand in the window. ... Iron shelves hold tin moulds and cutters > of every description, glazed and unglazed earthenware pots, bowls and dishes > in traditional colours, plain pots and pans in thick aluminium, cast-iron, > vitreous enamel and fireproof porcelain, unadorned crockery in classic > shapes and neat rows of cooks' knives, spoons and forks. David reduced her writing commitments to concentrate on running the shop, but contributed some articles to magazines, and began to focus more on English cuisine. She still included many recipes but increasingly wrote about places—markets, auberges, farms—and people, including profiles of famous chefs and gourmets such as Marcel Boulestin and Édouard de Pomiane.David (1986), pp. 53–63, 94–98, 120–124, 162–174 and 175–185; and Cooper, pp.
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Mosan 12th century armlet, somewhat damaged, so showing the cast recesses for the enamel Champlevé is an enamelling technique in the decorative arts, or an object made by that process, in which troughs or cells are carved, etched, die struck, or cast into the surface of a metal object, and filled with vitreous enamel. The piece is then fired until the enamel fuses, and when cooled the surface of the object is polished. The uncarved portions of the original surface remain visible as a frame for the enamel designs; typically they are gilded in medieval work.Osbourne, 332 The name comes from the French for "raised field", "field" meaning background, though the technique in practice lowers the area to be enamelled rather than raising the rest of the surface.
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Kennedy, B. A. (ed.). Surface Mining, Chapter 9.4: Case Studies: Morenci/Metcalf Society for Mining, Metallurgy, and Exploration, Undated Accessed May 28, 2007 The town of Quartzsite in western Arizona derives its name from the quartzites in the nearby mountains in both Arizona and Southeastern California. A glassy vitreous quartzite has been described from the Belt Supergroup in the Coeur d’Alene district of northern Idaho.White, B.G. and Winston, D., 1982, The Revett/St Regis “transition zone” near the Bunker Hill mine, Coeur d’Alene district, Idaho: Idaho Bureau of Mines and Geology Bulletin 24 In the United Kingdom, a craggy ridge of quartzite called the Stiperstones (early Ordovician – Arenig Epoch, 500 Ma) runs parallel with the Pontesford-Linley fault, 6 km north-west of the Long Mynd in south Shropshire.
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Leonardite is a soft waxy, black or brown, shiny, vitreous mineraloid that is easily soluble in alkaline solutions. It is an oxidation product of lignite, associated with near-surface mining. It is a rich source of humic acid (up to 90%) and is used as a soil conditioner, as a stabilizer for ion-exchange resins in water treatment,The mineral industry of North Dakota, USGS report on non-fuel minerals in North Dakota in the remediation of polluted environments and as a drilling additive.Hoffman, G.L., Nikols, D.J., Stuhec, S., Wilson, R.A. Evaluation of Leonardite (Humalite) Open File Report 1993-18, Resources of Alberta, Alberta Geological Survey It was named after A. G. Leonard, first director of the North Dakota Geological Survey, in recognition of his work on these deposits.
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Led by Chicago industrialist and inventor Carl Strandlund, who had worked with constructing prefabricated gas stations, Lustron offered a home that would "defy weather, wear, and time."Lustron Corporation. "Compact, Beautiful Lustron Homes: Newport Two-Bedroom and Three-Bedroom Sizes." Company brochure. Strandlund's Lustron Corporation, a division of the Chicago Vitreous Enamel Corporation, set out to construct 15,000 homes in 1947 and 30,000 in 1948. From its plant in Columbus, Ohio (the former Curtiss-Wright factory), the corporation eventually constructed 2,498 Lustron homes between 1948 and 1950.The plant would later be returned to aircraft production by North American Aviation as Air Force Plant 85. The houses sold for between $8,500 and $9,500, according to a March 1949 article in the Columbus Dispatch—about 25 percent less than comparable conventional housing.
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Such eyes are typically roughly spherical, filled with a transparent gel-like substance called the vitreous humour, with a focusing lens and often an iris; the relaxing or tightening of the muscles around the iris change the size of the pupil, thereby regulating the amount of light that enters the eye, and reducing aberrations when there is enough light. The eyes of most cephalopods, fish, amphibians and snakes have fixed lens shapes, and focusing vision is achieved by telescoping the lens—similar to how a camera focuses.BioMedia Associates Educational Biology Site: What animal has a more sophisticated eye, Octopus or Insect? Compound eyes are found among the arthropods and are composed of many simple facets which, depending on the details of anatomy, may give either a single pixelated image or multiple images, per eye.
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The Reichsadlerhumpen, a glass with the double-headed eagle of the Holy Roman Empire, and the arms of the various territories on its wings, was a popular showpiece of enamelled glass in the German lands from the 16th century on. Dated 1743, this is a late example The Luck of Edenhall, a 13th-century enamelled glass cup made in Syria or Egypt Enamelled glass or painted glass is glass which has been decorated with vitreous enamel (powdered glass, usually mixed with a binder) and then fired to fuse the glasses. It can produce brilliant and long-lasting colours, and be translucent or opaque. Unlike most methods of decorating glass, it allows painting using several colours, and along with engraving, has historically been the main technique used to create the full range of image types on glass.
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With elevations ranging from 2000 feet in the lower drainages to 3600 feet on the ridge crest, London Bridge Branch wild area is dominated by a mountain ridge with small, steep sideslopes. A diversity of geologic features is characteristic of the Southern Appalachian Mountains. Geologic rock types are the Erwin Formation with white, vitreous quartzite, interbeds of dark-green, silty and sandy shale, minor siltstones and very fine sandstone; the Hampton Formation with dark greenish-gray, silty and sandy shale, micaceous shale, numerous layers of medium-grained, feldspathic, and thinly bedded sandstone; the Union Formation, a sequence of grey feldspathic sandstone, arkose, conglomerate, greywacke, siltstone and shale, and greenish amygdaloidal basalt flow; and Shady Dolomite, a light gray, well-bedded dolomite with thin to medium-bedded gray limestone, and yellowish brown residual clays with “jasperoid” diagnostic.
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Her 2016 work, remiscipate, reflecting the demolition of Glasgow's Red Road Flats, was commissioned and premiered by the Royal Scottish National Orchestra, and described as an "evocation of a crumbling building, through moaning trombones and tremolo strings, as well as the bleak aftermath of dust and silence." In the same year, she wrote her solo viola work, AND, for violist Katherine Wren, who subsequently performed the work in her Nordic tour of the Shetland Islands, at Soundfestival Aberdeen and at the Glasgow Royal Concert Hall as part of the Royal Scottish National Orchestra's chamber music series. Her work, Vitreous was written for the pianist Ben Powell as part of the Psappha Composing for Piano project. In 2017, she was appointed a place on the London Symphony Orchestra's SoundHub programme, and commissioned her piece My Last Duchess, based on the poem by Robert Browning.
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Palaiologan-era mannerism—the Annunciation icon from Ohrid in North Macedonia. Of the icon painting tradition that developed in Byzantium, with Constantinople as the chief city, we have only a few icons from the 11th century and none preceding them, in part because of the Iconoclastic reforms during which many were destroyed or lost, and also because of plundering by the Republic of Venice in 1204 during the Fourth Crusade, and finally the Fall of Constantinople in 1453. It was only in the Komnenian period (1081–1185) that the cult of the icon became widespread in the Byzantine world, partly on account of the dearth of richer materials (such as mosaics, ivory, and vitreous enamels), but also because an iconostasis a special screen for icons was introduced then in ecclesiastical practice. The style of the time was severe, hieratic and distant.
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Bityite exhibits a strong pearly luster, and occurs as a fine scaled white yellowish mass which is usually smaller than 0.3mm in diameter; and, its opacity is transparent to translucent. Physical properties analyses conducted with precision photographs using zirconium-filtered molybdenum radiation indicates that bityite exhibits monoclinic symmetry, and is part of the C2/c space group. The unit cell dimensions are a = 4.99 Å, b = 8.68 Å, c = 19.04 Å, β=95.17°, with a volume of 821.33 Å3. The refraction indices measured by the immersion method are α = 1.650, β = 1.658, γ = 1.660 with 2V calculation of 52.9°. Bityite’s specific gravity is 3.14, and it has a hardness of 4−4.5 based on Mohs scale of hardness. Bityite’s luster is vitreous and pearly on cleavages, and it has a perfect micaceous cleavage on the {001} miller index. Bityite’s crystal habit can display thin and pseudohexagonal platy crystals.
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200x200pxBuffalo Pottery was founded in 1901 by John D. Larkin (1845-1926) to supply the Larkin Company with premiums for its customers. The company's first general manager, Louis Bown, recruited a number of skilled craftsmen and artisans from throughout the United States, including William J. Rea, Anna Kappler, and Ralph Stuart. Buffalo Pottery was located on 8.5 acres at Seneca Street and Hayes Place in Buffalo, New York. At the time of its completion in 1903, the 80,000 square foot plant was the largest fireproof pottery in the world; and it was also the only pottery in the world completely operated by electricity. 314x210px In addition to the china produced for distribution as premiums to Larkin customers, Buffalo Pottery produced many lines of semi-vitreous china, including Deldare Ware, Roosevelt Bears, and Abino Ware, as well as the first Blue Willow dinnerware manufactured in the United States.
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Daly summarized his ideas in his 1926 book, Our Mobile Earth, which included on the title page small print adopted from Galileo: E pur si muove. Daly's theory on continental displacement was based partly on the idea that after the Moon was ejected from the Earth, continental movement was an inevitable part of rebalancing the planet; he also suggested that continental material accruing near oceans eventually slips, and forces continents to creep along. He expanded this notion in Strength and Structure of the Earth, in 1940, where Daly anticipated aspects of plate tectonics, including introduction of a "mesospheric shell" and a slippery vitreous basaltic substratum. Daly also proposed the impact theory of lunar creation in 1946, which countered two prevailing notions: George Darwin's hypothesis that the Moon spun out of the primordial Earth due to centrifugal force; and, another fashionable theory that the Moon was a captured wayward asteroid.
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As stem cell transplantation is becoming a more prevalent means of treating traumatic spinal cord damage, many processes between the start and end result need to be addressed and made more efficient. By labeling OECs, these cells can be tracked by a magnetic resonance imaging (MRI) device when being dispersed in the central nervous system A recent study made use of a novel type of micron- sized particles of iron oxide (MPIO) to label and track these transport- mediated cells via MRI. The experiment resulted in an OEC labeling efficiency of more than 90% with an MPIO incubation time as short as 6 hours, without affecting cell proliferation, migration and viability. MPIOs have also been successfully transplanted into the vitreous body of adult rat eyes, providing the first detailed protocol for efficient and safe MPIO labeling of OECs for their non-invasive MRI tracking in real time for use in studies of central nervous system repair and axonal regeneration.
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These experts concluded: "Epidemiologic studies published during the 15 years since the previous IARC monographs review of these fibers in 1988 provide no evidence of increased risks of lung cancer or mesothelioma (cancer of the lining of the body cavities) from occupational exposures during the manufacture of these materials, and inadequate evidence overall of any cancer risk." A 2012 health hazard review for the European Commission stated that inhalation of fiberglass at concentrations of 3, 16 and 30 mg/m3 "did not induce fibrosis nor tumours except transient lung inflammation that disappeared after a post-exposure recovery period." Similar reviews of the epidemiology studies have been conducted by the Agency for Toxic Substances and Disease Registry ("ATSDR"), the National Toxicology Program,Charles William Jameson, "Comments on the National Toxicology Program's Actions In Removing Biosoluble Glass Wool Fibers From The Report On Carcinogens," September 9, 2011. the National Academy of SciencesNRC Subcommittee on Manufactured Vitreous Fibers. 2000.
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Hindwing with two black spots, the upper bearing often, the posterior more rarely, a red central dot; the posterior spot sometimes altogether wanting or only indicated by a dot; in the abdominal area usually a black band-like spot, and beyond the cell along the edge of the wing black dusting. The female more sharply and extendedly marked with grey; the forewing bearing beyond the cell a more or less complete median band, which is however sometimes indicated also in the male, and a submarginal band which is more sharply defined than in the male being, moreover, separated from the vitreous edge only by a row of white halfmoons. Hindwing of female more extendedly blackish; the eyespots mostly without red pupil, sometimes however also the anal ocellus bearing a red spot; near the distal margin a distinct blackish and somewhat undulate band, which is occasionally vestigial in the male. Often both wings more or less densely dusted with black.
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In 1993, the crown was subjected to extensive scientific analysis performed by the University of Milan using X-ray fluorescence (XRF) analysis and radiocarbon dating. The XRF analysis on the crown metal revealed that all the foils, rosettes and bezels were made with the same alloy, made of 84–85% gold, 5–7% silver, and 8–10% copper, suggesting a contemporary construction of the main part of the crown, while the fillets external to the enamel plates and the hinge pins were made of 90–91% gold and 9–10% silver, suggesting subsequent reworking. Three of the 24 vitreous enamel plates are visually different from the others in colour and construction, and were traditionally considered to be later restorations. The XRF analysis confirmed that they were made with a different technique, with their glass being made of potassium salt, while the others are made of sodium salt (sodium is not directly detectable by the XRF analysis).
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However, structural determinations of vitreous SiO2 and GeO2 made by Warren and co-workers in the 1930s using x-ray diffraction showed the structure of glass to be typical of an amorphous solid In 1932 Zachariasen introduced the random network theory of glass in which the nature of bonding in the glass is the same as in the crystal but where the basic structural units in a glass are connected in a random manner in contrast to the periodic arrangement in a crystalline material. Despite the lack of long range order, the structure of glass does exhibit a high degree of ordering on short length scales due to the chemical bonding constraints in local atomic polyhedra. For example, the SiO4 tetrahedra that form the fundamental structural units in silica glass represent a high degree of order, i.e. every silicon atom is coordinated by 4 oxygen atoms and the nearest neighbour Si-O bond length exhibits only a narrow distribution throughout the structure.
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Aerographite is a black freestanding material that can be produced in various shapes occupying a volume of up to several cubic centimeters. It consists of a seamless interconnected network of carbon tubes that have micron-scale diameters and a wall thickness of about 15 nm. Because of the relatively lower curvature and larger wall thickness, these walls differ from the graphene-like shells of carbon nanotubes and resemble vitreous carbon in their properties. These walls are often discontinuous and contain wrinkled areas that improve the elastic properties of aerographite. The carbon bonding in aerographite has an sp2 character, as confirmed by electron energy loss spectroscopy and electrical conductivity measurements. Upon external compression, the conductivity increases, along with material density, from ~0.2 S/m at 0.18 mg/cm3 to 0.8 S/m at 0.2 mg/cm3. The conductivity is higher for a denser material, 37 S/m at 50 mg/cm3. Owing to its interconnected tubular network structure, aerographite resists tensile forces much better than other carbon foams as well as silica aerogels.
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Roman cage cup from the 4th century CE Naturally occurring obsidian glass was used by Stone Age societies as it fractures along very sharp edges, making it ideal for cutting tools and weapons. Glassmaking dates back to at least 6000 years, long before humans had discovered how to smelt iron. Archaeological evidence suggests that the first true synthetic glass was made in Lebanon and the coastal north Syria, Mesopotamia or ancient Egypt. The earliest known glass objects, of the mid- third millennium BCE, were beads, perhaps initially created as accidental by- products of metalworking (slags) or during the production of faience, a pre- glass vitreous material made by a process similar to glazing. Early glass was rarely transparent and often contained impurities and imperfections, and is technically faience rather than true glass, which did not appear until 15th century BC. However, red-orange glass beads excavated from the Indus Valley Civilization dated before 1700 BC (possibly as early as 1900 BC) predate sustained glass production, which appeared around 1600 in Mesopotamia and 1500 in Egypt.
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With elevations ranging from 2200 feet in the lower drainages to 3600 feet on the ridge crest, Beaverdam Creek wild area is dominated by a mountain ridge with steep sideslopes. A diversity of geologic features is characteristic of the Southern Appalachian Mountains. Geologic rock types are the Erwin Formation with white, vitreous quartzite, interbeds of dark-green, silty and sandy shale, minor siltstones and very fine sandstone; the Hampton Formation with dark greenish-gray, silty and sandy shale, micaceous shale, numerous layers of medium-grained, feldspathic, and thinly bedded sandstone; the Union Formation, a sequence of grey feldspathic sandstone, arkose, conglomerate, greywacke, siltstone and shale, and greenish amygdaloidal basalt flow; and Shady Dolomite, a light gray, well-bedded dolomite with thin to medium-bedded gray limestone, and yellowish brown residual clays with “jasperoid” diagnostic. The area, divided by Holston Mountain, has a northern part with headwater streams that flow north to the South Fork Holston River, and a southern part with streams flowing south into Beaverdam Creek, a tributary of the South Fork Holston River.
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On December 27, 2005, the district court vacated Hammer's death sentence and set aside his conviction based upon the government hiding favorable evidence that supported Hammer's defenses. Back in court, on July 17, 2014, U.S. District Judge Joel Slomsky resentenced Hammer to life imprisonment without possibility of parole. Judge Slomsky found multiple circumstances warranting a sentence less than death, including Hammer's acceptance of responsibility and remorsefulness, his extended family history of dysfunction, abuse and mental illness, his mental and emotional impairments, and his self-improvement. Judge Slomsky also identified Hammer's medical diagnoses - “diabetes mellitus, type II [high blood sugar requiring insulin dependency], diabetic polyneuropathy [the gradual destruction of nerve sensations, especially in the extremities], diabetic retinopathy [scarring of the retina], and/or diabetic macular edema [release of retinal blood into the vitreous fluid in the eye, blocking vision to the point of legal blindness]” - and Hammer's charitable contributions during his 9 years on death row and his correspondence with at-risk children counseling them against engaging in criminal conduct.
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Vitrectomy was originated by Robert Machemer with contributions from Thomas M. Aaberg, Sr in late 1969 and early 1970. The original purpose of vitrectomy was to remove clouded vitreous humor—usually containing blood. The success of these first procedures led to the development of techniques and instruments to remove clouding and also to peel scar tissue off the light sensitive lining of the eye—the retina—membranectomy, to provide space for materials injected in the eye to reattach the retina such as gases or liquid silicone, and to increase the efficacy of other surgical steps such as scleral buckle. The development of new instruments and surgical strategies through the 1970s and 1980s was spearheaded by surgeon/engineer Steve Charles, M.D. More recent advances have included smaller and more refined instruments for use in the eye, the injection of various medications at the time of surgery to manipulate a detached retina into its proper position and mark the location of tissue layers to allow their removal, and for long term protection against scar tissue formation.
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ANGPTL4-deficient mice exhibit delayed wound reepithelialization with impaired keratinocyte migration, angiogenesis and altered inflammatory response. ANGPTL4 induces nitric oxide production through an integrin/JAK/STAT3-mediated upregulation of iNOS expression in wound epithelia, and enhances angiogenesis to accelerate wound healing in diabetic mice. ANGPTL4 induces a β-catenin-mediated upregulation of ID3 in fibroblasts to reduce scar collagen expression. ANGPTL4 is capable of reversing the fibroblast-to-myofibroblast differentiation induced aligned electrospun fibrous substrates. Cyclic stretching of human tendon fibroblasts stimulated the expression and release of ANGPTL4 protein via TGF-β and HIF-1α signalling, and the released ANGPTL4 was pro-angiogenic. ANGPTL4 is also a potent angiogenic factor whose expression is up-regulated in hypoxic retinal Müller cells in vitro and the ischemic retina in vivo. The expression of ANGPTL4 was increased in the aqueous and vitreous of proliferative diabetic retinopathy patients and localized to areas of retinal neovascularization. ANGPTL4 has been established as a potent inhibitor of serum triglyceride (TG) clearance, causing elevation of serum TG levels via inhibition of the enzyme lipoprotein lipase (LPL).
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Eric van Hove - V12 Laraki, 2013. fifty- three materials including: Middle Atlas white cedar wood, high Atlas red cedar wood, walnut wood, lemon wood, orange wood, ebony wood of Macassar, mahogany wood, Thuya wood, Moroccan beech wood, pink apricot wood, mother-of-pearl, yellow copper, nickel plated copper, red copper, forged iron, recycled aluminum, nickel silver, silver, tin, cow bone, goat bone, malachite of Midelt, agate, green onyx, tigers eye stone, Taroudant stone, sandstone, red marble of Agadir, black marble of Ouarzazate, white marble of Béni Mellal, pink granite of Tafraoute, goatskin, cowskin, lambskin, resin, cow horn, rams horn, ammonite fossils of the Paleozoic from Erfoud, Ourika clay, geometric terra cotta with vitreous enamel (zellige), green enamel of Tamgrout, paint, cotton, argan oil, cork, henna, rumex. In 2012, van Hove arrived in Marrakech, Morocco to resume work on an ambitious sculptural endeavor he had prepared for years: V12 Laraki. In the space of nine months, van Hove gathered around him 42 master craftsmen from the region and began rebuilding a Mercedes 6.2L V12 engine using rural materials and centuries old craft techniques from the North African country.
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Belli argued (in cases such as Escola v. Coca-Cola Bottling Co., in 1944, which arose from an incident in which a restaurant waitress from Merced, California was injured by an exploding Coca-Cola bottle) that all products have an implied warranty, that it is to be foreseen that products will be used by a long chain of people, not just the direct recipient of the manufactured product, and that negligence by a defendant need not be proven if the defendant's product is defective. Clown Alley, 1964 In his book Ready for the Plaintiff, Belli noted examples of negligence cited by himself and other personal-injury lawyers to win in court—for example, a colleague in Florida, who showed how a builder violated a building code in Miami Beach concerning the use of wooden shims in construction of outside walls (forbidden by the municipal code because of the effect of the ocean salt and air). The facing was a slab of Vitreous marble, whose adhesion was eventually weakened by the climate; it fell off the side of the building and injured a passerby, who sued the builder.
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