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"pellicle" Definitions
  1. a thin skin or film: such as
  2. an outer membrane of some protozoans (such as euglenoids or paramecia)
  3. a film that reflects a part of the light falling upon it and transmits the rest and that is used for dividing a beam of light (as in a photographic device)

160 Sentences With "pellicle"

How to use pellicle in a sentence? Find typical usage patterns (collocations)/phrases/context for "pellicle" and check conjugation/comparative form for "pellicle". Mastering all the usages of "pellicle" from sentence examples published by news publications.

These B. subtilis are forming a pellicle—a kind of floating biofilm at the interface between water and air.
Once cured, rinse lightly with ice cold water and set aside to form a light pellicle, 1-2 hours.
It's ready for straining and bottling and for me to make another batch with the pellicle its "mother" left behind.
That's short for symbiotic colony of bacteria and yeast—a blend of bugs that forms a floating film called a pellicle on top of kombucha as it brews.
The genetic pathways involved in forming a pellicle are essentially the same as those used in growing across stones, though they may respond to the changes in their habitat by altering the precise mix of proteins in the extracellular matrix as needed.
The development of biofilm begins with pellicle formation. Pellicle is an acellular proteinaceous film which covers the teeth. Bacteria colonize on the teeth by adhering to the pellicle-coated surface. Over time, a mature biofilm is formed and this create a cariogenic environment on the tooth surface.
The flesh of the gill is homogenous, and stains dark vinaceous-brown in iodine. The flesh of the cap has a thin but clearly differentiated pellicle, a well-developed hypoderm (the tissue layer immediately underneath the pellicle), and the remainder is filamentous. All but the pellicle stain vinaceous-brown in iodine.
The hypoderm (a layer of tissue immediately below the pellicle) is well-formed, while the remaining tissue is floccose; all but the pellicle are vinaceous-brown in iodine stain.
The flesh of the cap is covered with a thin pellicle, and the hypoderm (the layer of cells immediately underneath the pellicle) is moderately well- differentiated. The remainder of the cap flesh is floccose and filamentous, and all except the pellicle stain pale vinaceous-brown in iodine. Lactiferous (latex-producing) hyphae are abundant.
Journal of Natural History, 24 (4): 801-937. doi:10.1080/00222939000770571 In Petalomonas, cells are covered with approximately a dozen thickly, fused pellicle strips making the cell very rigid and possibly resistant to surface ice crystal formation that can disrupt the cell. These pellicle strips, unlike most euglenoids, are lacking grooves or troughs; however, species specific pellicle features, such as pleat-like thickenings at the joints of pellicle strips, that characterize P. cantuscygni, can distinguish certain species.
Pellicle is usually formed in three steps: cells attach to the triple surface of culture device, air and liquid, then developing a one-layered biofilm from the initial cells, and subsequently maturing to a complicated three-dimensional structure. In a developed pellicle, a number of substances between the cells (extracellular polymeric substances) help maintain the pellicle matrix. The process of pellicle formation involves significant microbial activities and related substances. For the extracellular polymeric substances, many proteins and other bio- macromolecules are required.
In ciliates and Apicomplexa, the pellicle is supported by closely packed vesicles called alveoli. In euglenids, it is formed from protein strips arranged spirally along the length of the body. Familiar examples of protists with a pellicle are the euglenoids and the ciliate Paramecium. In some protozoa, the pellicle hosts epibiotic bacteria that adhere to the surface by their fimbriae (attachment pili).
Pellicle is a variety of biofilm that is formed between the air and the liquid in which bacteria grow. In a biofilm, bacterial cells interact with each other to protect their community and co-operate metabolically (microbial communities). In S. oneidensis, pellicle formation is typical and is related to the process of reducing heavy metal. Pellicle formation is extensively researched in this species.
Throughout development the macrogamete retains a normal pellicle which possesses numerous micropores.
Euglenoids are distinguished mainly by the presence of a type of cell covering called a pellicle. Within its taxon, the pellicle is one of the euglenoids' most diverse morphological features. The pellicle is composed of proteinaceous strips underneath the cell membrane, supported by dorsal and ventral microtubules. This varies from rigid to flexible, and gives the cell its shape, often giving it distinctive striations.
SiNx pellicle membranes also failed at 82 W equivalent EUV source power levels.D. L. Goldfarb, Dec. 2015 BACUS Newsletter. At target 250 W levels, the pellicle is expected to reach 686 degrees Celsius, well over the melting point of aluminum.
The intricacies of dinoflagellate pellicle cysts: the example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain). Deep-Sea Research Part II: Topical Studies in Oceanography 57: 166–174. These are not pellicle or resting cysts since they are not dormant. Similarly, palmelloid or mucilage stages are not pellicle or resting cysts, but stages in which the monad loses its flagella and becomes enveloped in multilayered mucilage wherein division takes place.
Pellicle mirrors have been used in single-lens reflex cameras from at least the 1960s (see Canon Pellix).
It was made from 1960 on and provides a lightly slanted deflection. Later, in 1967, the professional Mitchell NCR and BNCR cameras were equipped with a pellicle-based finder. In the Soviet Union in 1970 appeared the Kiev 16 Alpha, also featuring a pellicle mirror finder system that deflects strictly vertically.
Granules or rods (called protrichocysts) in the pellicle of some ciliates are also thought to be involved in tectin secretion.
The flesh of the gills is homogeneous, and pale yellowish to dirty brown when stained in iodine. The flesh of the cap has a distinct pellicle, a well-differentiated hypoderm (a region of tissue immediately under the pellicle), and a filamentous tramal body (gill tissue); it is pale yellowish to sordid brownish in iodine stain.Smith, pp. 338–40.
The dental pellicle, or acquired pellicle, is a protein film that forms on the surface enamel by selective binding of glycoproteins from saliva that prevents continuous deposition of salivary calcium phosphate. It forms in seconds after a tooth is cleaned or after chewing. It protects the tooth from the acids produced by oral microorganisms after consuming carbohydrates.
Underneath the pericarpus is another, thinner skin, called the pellicle or episperm. The pellicle closely adheres to the seed itself, following the grooves usually present at the surface of the fruit. These grooves are of variable sizes and depths according to the species and variety. The fruit inside these shows two cotyledons with a creamy-white flesh throughout,What Are Chestnuts.
In photography, the pellicle mirror has been employed in single-lens reflex (SLR) cameras, at first to enable through-the-lens exposure measurement and possibly to reduce camera shake, but later most successfully to enable fast series photography, which otherwise would be slowed down by the movement of the reflex mirror, while maintaining constant finder vision. The first use of pellicle mirrors for consumer photography however were in color separation cameras. The Devin Tricolor Camera from at least the 1938 version used two pellicle mirrors plus three color filters to split the image from a single lens into three images of the three additive primary colors. Pellicle mirrors are ideal for this purpose, even today, since they are lighter and cheaper than an optical block of dichroic prisms, which would be heavy and expensive for large, high resolution film or plates.
The gill flesh stains vinaceous-brown in iodine. The subhymenium (the tissue layer directly underneath the hymenium) is made of narrow, interwoven hyphae, with the central portion composed of long, cylindrical, and moderately broad cells. The flesh of the cap has a fairly thick subgelatinous pellicle, a well-differentiated hypoderm, and a filamentous tramal body. All except the pellicle stain vinaceous-brown in iodine.
Few film movie cameras have been made that make use of the pellicle mirror. Probably the earliest is the Pathé WEBO M, m for membrane, of 1946. With that camera light is reflexed sideways into a primary plano-convex finder lens, the plane side being partially or fully matted. Another French amateur movie camera with a pellicle is the Christen Reflex for Double-Eight film.
The stages of biofilm formation: #Formation of an acquired pellicle: Involves selective absorption of salivary and GCF molecules through an electrostatic affinity with hydroxyapatite. #Bacterial transportation: Bacteria will readily adhere to the acquired pellicle through adhesins, proteins and enzymes within one to two hours #Reversible interaction: There is electrostatic attraction or hydrophobic interaction between microorganisms and the tooth surface #Irreversible interaction: Bacterial adhesins recognise specific host receptors such as pili and outer membrane proteins. The different species of bacteria bind together and require specific receptors to interact with the pellicle. #Co-adehsion: There is a natural affinity for oral microorganisms to adhere to one another which is termed "co‐adhesion".
The word Psilocybe comes from the Greek words ψιλός + κύβη, and literally means "bare headed", referring to the mushroom's detachable pellicle (loose skin over the cap).
Yabuki, A., Ishida, K-I., Cavalier-Smith, T. (2013) Rigifila ramosa n. gen., n. sp., a Filose Apusozoan with a Distinctive Pellicle, is Related to Micronuclearia.
Journal of Eukaryotic Microbiology. 2: 107-120. doi: 10.1111/jeu.12014 The cells are covered with a large number of proteinaceous pellicle strips with microtubules lined underneath.
The term "pellicle" is used to mean "film", "thin film", or "membrane." Beginning in the 1960s, thin film stretched on a metal frame, also known as a "pellicle", was used as a beam splitter for optical instruments. It has been used in a number of instruments to split a beam of light without causing an optical path shift due to its small film thickness. In 1978, Shea et al.
SPIE vol. 10143, 101430L (2017). The current lack of any suitable pellicle material, aggravated by the use of hydrogen plasma cleaning in the EUV scanner,H. Oizumi et al.
They should be air-dried uncovered, in the refrigerator or a cool room. To encourage pellicle formation, foods can be placed so that a fan blows air over them.
494, 317-318, accessed 2018 Usually there are 3 nuts per burr. Colossal nuts have occurrence of double or triple embryos per nut. The pellicle (skin) of the nuts is thick.
These species infect the gut of polychaete worms. The trophozoites are vermiform with an apical complex. They have few epicytic folds. A dense array of microtubules lies under a trilayered pellicle.
Production EUV tools need a pellicle to protect the mask from contamination. Currently, the pellicle is not yet guaranteed to withstand 250 W power necessary for high volume manufacturing; the specification is 40 W. Pellicles are normally expected to protect the mask from particles during transport, entry into or exit from the exposure chamber, as well as the exposure itself. Without pellicles, particle adders would reduce yield, which has not been an issue for conventional optical lithography with 193 nm light and pellicles. However, for EUV, the feasibility of pellicle use is severely challenged, due to the required thinness of the shielding films to prevent excessive EUV absorption. Particle contamination would be prohibitive if pellicles were not stable above 200 W, i.e.
Unlike plants, fungi and most types of algae, protozoans do not typically have a rigid cell wall, but are usually enveloped by elastic structures of membranes that permit movement of the cell. In some protozoans, such as the ciliates and euglenozoans, the cell is supported by a composite membranous envelope called the "pellicle". The pellicle gives some shape to the cell, especially during locomotion. Pellicles of protozoan organisms vary from flexible and elastic to fairly rigid.
Peranema Peranema's basic anatomy is that of a typical Euglenid. The cell is spindle or cigar-shaped, somewhat pointed at the anterior end. It has a pellicle with parallel finely-ridged proteinaceous strips underlain by microtubules arranged in a helical fashion around the body. With this type of pellicle, which is shared by many Euglenids, the spiraling microtubular strips are able to slide past one another, giving the organism an extremely plastic and changeable body shape.
The biofilm needs bacterial cells to move in a certain manner, while flagella is the organelle which has locomotive function. Mutant strains lacking flagella can still form pellicle, albeit much less rapidly.
Fabric can be starched with chestnut meal. Linen cloth can be whitened with chestnut meal. The leaves and the skins (husk and pellicle) of the fruits provide a hair shampoo.Encyclopaedia of Medicinal Plants.
Dental plaque is a biofilm that attaches to tooth surfaces, restorations and prosthetic appliances (including dentures and bridges) if left undisturbed. Understanding the formation, composition and characteristics of plaque helps in its control. An acquired pellicle is a layer of saliva that is composed of mainly glycoproteins and forms shortly after cleaning of the teeth or exposure of new teeth. Bacteria then attach to the pellicle layer, form micro-colonies, and mature on the tooth, which can result in oral diseases.
A pellicle is a skin or coating of proteins on the surface of meat, fish or poultry, that allows smoke to better adhere to the surface of the meat during the smoking process. Useful in all smoking applications and with any kind of animal protein, it is best used with fish where the flesh of a fish such as salmon forms a pellicle that will attract more smoke to adhere to it than would be the case if it had not been used.
They lack cytostomes. They are saprozoic, consuming dead matter, which suggests their commensal role. They propagate by means of plasmotomy. The body is flattened, leaf-like and oval in outline and covered by thin pellicle.
The periplast is one of three types of cell-covering of three classes of algae. The Cryptomonads have the periplast covering. The Dinophyceae have a type called the amphiesma, and the Euglena covering is the pellicle.
Before cured foods are cold smoked, they can be allowed to air-dry to form a tacky outer layer, known as a pellicle. The pellicle plays a role in producing better smoked products as it acts as a protective barrier for the food and also plays a role in enhancing the flavor and color produced by the smoke. Most animal proteins can be dried by placing them on racks or by hanging them on hooks or sticks. It is important that air be able to flow around all sides.
The pellicle mirror of the Canon EOS RT A pellicle mirror (diminutive of pellis, a skin or film) is an ultra-thin, ultra-lightweight semi-transparent mirror employed in the light path of an optical instrument, splitting the light beam into two separate beams, both of reduced light intensity. Splitting the beam allows its use for multiple purposes simultaneously. The thinness of the mirror practically eliminates beam or image doubling due to a non- coincident weak second reflection from the nominally non-reflecting surface, a problem with mirror-type beam splitters.
In addition, the movement of the reflex mirror takes time, limiting the maximum shooting speed. The mirror system can also cause noise and vibration. Partially reflective (pellicle) fixed mirrors avoid these problems and have been used in a very few designs including the Canon Pellix and the Canon EOS-1N RS, but these designs introduce their own problems. These pellicle mirrors reduce the amount of light travelling to the film plane or sensor and also can distort the light passing through them, resulting in a less-sharp image.
The gamonts are elongated and flattened. They possess a smooth surface lacking any grooves or folds. The pellicle appears to be trilaminar and longitudinal microtubules lie deep to it. The parasite attaches to the host cell via mucron.
The gamonts are elongated and flattened. They possess a smooth surface lacking any grooves or folds. The pellicle appears to be trilaminar and longitudinal microtubules lie deep to it. The parasite attaches to the host cell via mucron.
The original mesh was quickly discontinued, with the most iconic version being black leather. In 1969, the Eames added a "Soft Pad" version with cushions. In 2001, a version with "Cygnus" mesh (similar to the Aeron chair's Pellicle) was introduced.
During the last decades, several clinical studies describing the clinical efficacy of the lactoperoxidase system in a variety of oral care products (tooth pastes, mouth rinses) have been published. After showing indirectly, by means of measuring experimental gingivitis and caries parameters, that mouth rinses containing amyloglucosidase (γ-amylase) and glucose oxidase activate the lactoperoxidase system, the protective mechanism of the enzymes in oral care products has been partially elucidated. Enzymes such as lysozyme, lactoperoxidase and glucose oxidase are transferred from the tooth pastes to the pellicle. Being components of the pellicle, these enzymes are catalytically highly active.
Revu, corrigé et augmenté published in 1798 states that a marron glacé is a confit marron that is covered in caramel. The 1767 book L'agronome, ou dictionnaire portatif du cultivateur claimed that the best marrons came from the Dauphiné region in southeastern France, and contained instructions for preparing marron glacés. Chestnuts are covered with a membrane, known as a pellicle or episperm, which closely adheres to the fruit's flesh and must be removed because of its astringency. Marron nuts have a pellicle which is "superficially attached to the nut", making it easily removable from the fruit.
Two thirds of the light from the camera lens was let through the mirror, while the rest was reflected up to the viewfinder screen. The Pellix pellicle mirror was an ultra-thin (0.02 mm) Mylar film with a vapour deposited semi reflecting layer. Since there was no mirror blackout, the user could see the image at the moment of exposure. The next 35mm SLR camera to employ the pellicle mirror was the Canon F-1 High Speed, made available in the event of the 1972 Olympic games, the object being rapid series photography, difficult at the time to obtain with a moving mirror.
Parameciidae are a family of ciliates in the order Peniculida; the body has differentiated anterior and posterior ends and is bounded by a hard but elastic pellicle. The family contains only the genus Paramecium, as well as the genus incertae sedis Physanter.
Pores are small, with a round to angular shape. The context is white, cream, buff, orange to brown, corky, and thicker than the tubes. It sometimes has a pellicle (a thin membrane) at the upper surface. The tubes are thin and fragile.
Churchill Livingstone, 092006. The surface of enamel attracts salivary glycoproteins and bacterial products creating the pellicle layer. This thin layer forms on the surface of the enamel within minutes of its exposure. These glycoproteins include proline rich proteins that allow bacterial adhesion.
This pellicle may be decorated with pustules, warty projections, spines or tubercules. Harmless or parasitic bacteria may grow on the body or stalk, appearing as part of the morphology of the cell. Inside, there is a curved, transverse macronucleus and round micronucleus near it.
The Sony SLT design features a pellicle mirror which allows light to strike both the digital image sensor (parallel to the lens mount, behind mirror) and phase-detection autofocus sensor (perpendicular to the mount) at all times. Single-lens translucent (SLT) is a Sony proprietary designation for Sony Alpha cameras which employ a pellicle mirror, electronic viewfinder, and phase- detection autofocus system. They employ the same Minolta A-mount as Sony Alpha DSLR cameras. Sony SLT cameras have a semi-transparent fixed mirror which diverts a portion of incoming light to a phase-detection autofocus sensor, while the remaining light strikes a digital image sensor.
Toothpaste with pyrophosphates or zinc citrate has been shown to produce a statistically significant reduction in plaque accumulation, but the effect of zinc citrate is so modest that its clinical importance is questionable. Some calculus may form even without plaque deposits, by direct mineralisation of the pellicle.
Ceratiums have zygotic meiosis in their alternation of generation. Ceratium dinoflagellates may reproduce sexually or asexually. In asexual reproduction, the pellicle (shell) pulls apart and exposes the naked cell. The cell then increases in size and divides, creating 4–8 daughter cells, each with two flagella.
The cell wall is a trilaminate pellicle with subpellicular microtubules and a micropore. The cytoplasm contains a single, branched mitochondrion with tubular cristae, a supranuclear Golgi apparatus and large amounts of glycan granules. There are three types of secretory organelles present. Type I are round and structurally complex.
The flesh of the gill is very faintly vinaceous-brown when stained in iodine. The cap flesh has a thin, poorly differentiated pellicle with a region of slightly enlarged cells beneath it; the remainder is filamentous, and the filamentous portion stains vinaceous-brown in iodine.Smith, pp. 177–78.
Ontologically, the term cyst can apply to (1) a temporary resting state (pellicle, temporary or ecdysal cyst), (2) a dormant zygote (resting cysts or hypnozygotes) or (3) a coccoid condition in which the cells are still photosynthetically active.Pfiester L.A. & Anderson D.M. 1987. Dinoflagellate reproduction. In: The biology of dinoflagellates.
But, soon the sperm tails are detached from its body and the trophozoite becomes free The adult is elongated, spindle shaped, flattened and worm like creature. Body is covered by thick smooth and permeable pellicle. Cytoplasm is well differentiated in to ectoplasm and endoplasm. endoplasm contains a large vesicular nucleus.
A hot chestnut seller in Avignon, 1936 Dried chestnut in the South of Italy The fruit can be peeled and eaten raw, but it can be somewhat astringent, especially if the pellicle is not removed.Description of European Chestnut . By F. Ferrini and F. P. Nicese. Horticulture Department – University of Florence – Italy.
European Journal of Protistology. 56: 147-170. doi:10.1016/j.ejop.2016.08.002 The cells are phagotrophic, feeding on bacteria, and/or osmotophic, assimilating nutrients from its surroundings.Esson, H. J.; Leander, B. S. (2006). “A model for the morphogenesis of strip reduction patterns in phototrophic euglenids: Evidence for heterochrony in pellicle evolution”.
The Pileus is 1.4–3.5 cm in diameter and conic to convex to broadly convex then becoming flat in age. It is not usually umbonate. The pileus is deep chestnut brown and hygrophanous, fading to yellowish brown or grayish white when dry. The surface is viscid when moist from the separable gelatinous pellicle.
After consuming some of the protoplasm, the Peranema may then insert its large flagellum into the hole, using it to churn up the contents of the cell so that they may be more easily sucked out. This continues until nothing is left of the prey but the tattered remnants of its pellicle.
The cap is (1)3–7(10) cm broad. Convex to obtusely campanulate with an incurved margin at first, rarely becoming plane, and often are umbonate or with a slight depression in the center. It is viscid when moist from a separable gelatinous pellicle. The margin is slightly translucent-striate when moist.
Plaque is a biofilm composed of several different kinds of bacteria and their products that develop over the enamel on a layer known as pellicle. The process of plaque formation takes several days to weeks and will cause the surrounding environment to become acidic if not removed.Samaranayake, Lakshman. Essential Microbiology for Dentistry, 3rd Edition.
Cystoderma amianthinum was first noted by the Italian-Austrian naturalist Giovanni Antonio Scopoli, who called it Agaricus amianthinus in 1772. The present generic name Cystoderma was erected by Swiss mycologist Victor Fayod in 1889, and is roughly translated as 'blistered skin', and is probably a reference to the appearance of the pellicle (cap skin).
The flesh of the gill is homogenous, and stains pale yellow in iodine. The flesh of the cap has a thin, poorly differentiated pellicle (a thin membrane), a somewhat differentiated hypoderm (that is most pronounced in old caps) and the remainder is made up of somewhat enlarged cells that stain pale yellow in iodine.Smith, p.166–68.
As described by Galen Kranz, "one of the secrets of the success of that chair was finding that fabric they called ‘pellicle’. That sheer but resistant fabric hit on the right gestalt for where our culture was at." The Aeron chair is made out of recycled materials, and 94 percent of the chair itself is recyclable.
They measure 26–38 by 8–13 μm, and are hyaline. The gill flesh is made of greatly enlarged cells, and stains pale vinaceous (red wine color) in iodine. The flesh of the cap has a pellicle which usually gelatinizes in potassium hydroxide or water mounts prepared for microscopy. The surface hyphae are covered with short rodlike projections.
The cap is buff-brown to dingy orangish-brown and pale ochraceous when dry. It is smooth, hygrophanous, and slightly translucent-striate when moist but not viscid and without a separable gelatinous pellicle. The flesh is whitish to cream-colored, bruising blue when injured. Spores are purple-brown, ellipsoid, slightly flattened, and thick-walled, with a distinct germ pore.
One subclade contained only the two varieties of B. nutans, and this clade became the basis of B. subser. Nutantes, which Thiele defined in terms of B. nutans pendent inflorescences, the fragile pellicle of the pollen-presenter, and the wrinkled follicles. The nearest outgroup of B. subser. Nutantes was the clade upon which was based B. subser. Longistyles.
Chelis maculosa Speckled Pellicle is a tiger moth of the family Erebidae. It is found in Southern and Central Europe up to Hungary, in eastern direction it occurs through Ukraine, Southern Russia, Kazakhstan to north-western regions of Chinese Xinjiang. The wingspan is 32–34 mm. The moth flies from June to August depending on the location.
The cap is typically 7-15 mm in diameter, almost convex to conic in shape, umbonate with a small papilla. The cap is viscid and has a separable pellicle. It is a reddish-brown color when moist, but becomes lighter brown when dry. The stipe is 4.0-6.5 cm high × 1.5 cm thick, equal or slightly bulbous.
At the time of exposure the mirror is flipped up out of the light path before the shutter opens. Some early cameras experimented with other methods of providing through-the-lens viewing, including the use of a semi-transparent pellicle as in the Canon Pellix and others with a small periscope such as in the Corfield Periflex series.
Watsonarctia is a monotypic moth genus in the subfamily Arctiinae erected by Josef J. de Freina and Thomas Joseph Witt in 1984. Its only species, Watsonarctia deserta, the chaste pellicle, was first described by Max Bartel in 1902.Mazzei, Paolo; Morel, Daniel & Panfili, Raniero "Watsonarctia deserta (Bartel, 1902)". Moths and Butterflies of Europe and North Africa.
Euglenoids have not been observed to undergo sexual reproduction; however, asexual reproduction does occur through mitosis followed by cytokinesis. Esson, H. J.; Leander, B. S. (2006). “A model for the morphogenesis of strip reduction patterns in phototrophic euglenids: Evidence for heterochrony in pellicle evolution”. Evolution Development, 8 (4): 378-388. doi:10.1111/j.1525-142x.2006.00110.
The most notable shared characteristic is the presence of cortical (outer-region) alveoli (sacs). These are flattened vesicles (sacs) packed into a continuous layer just under the membrane and supporting it, typically forming a flexible pellicle (thin skin). In dinoflagellates they often form armor plates. Alveolates have mitochondria with tubular cristae (ridges), and their flagellae or cilia have a distinct structure.
The alveolates are a major clade of unicellular eukaryotes of both autotrophic and heterotrophic members. The most notable shared characteristic is the presence of cortical (outer-region) alveoli (sacs). These are flattened vesicles (sacs) packed into a continuous layer just under the membrane and supporting it, typically forming a flexible pellicle (thin skin). In dinoflagellates they often form armor plates.
Many species also possess an elongated caudal process with extended pellicle strips. Throughout the cytoplasm of the cell, chloroplasts are spread out fairly evenly and in high numbers. They are typically discoid and are regularly disposed of and replaced. Chloroplasts that are present in large numbers are typically smaller, are without pyrenoids and species containing fewer chloroplasts tend to have much larger ones.
Merozoites use the apicomplexan invasion organelles (apical complex, pellicle and surface coat) to recognize and enter the host erythrocyte (red blood cell). The parasite first binds to the erythrocyte in a random orientation. It then reorients such that the apical complex is in proximity to the erythrocyte membrane. The parasite forms a parasitophorous vacuole, to allow for its development inside the erythrocyte.
The H in the F2H of 1978 denoted "High Speed". It was yet another titanium-armored F2 but this time with a fixed (not reflex), semi-silvered, pellicle mirror, manual lens diaphragm control and a mechanically matched titanium-armored Nikon MD-100 high-speed motor drive. The maximum shutter speed is 1/1000 (vs. 1/2000 for other F2 models).
It is the earliest intracellular stage of parasite. It is elongated, slightly curved, microscopic unicellular organism with one end pointed and the other end blunt. The pellicle, forming external envelope, contains longitudinally arranged contractile microtubules which help in wriggling movements of organism. Cytoplasm includes a vesicular nucleus, a mitochondrion, golgi bodies, endoplasmic reticulum, ribosomes, lysosomes and vacuoles containing reserve food, etc.
Hemimastigophora was established in 1988 by Foissner et al., as a new phylum with a single family, Spironemidae. Its placement on the eukaryote tree of life was unclear, but the authors suggested that the structure of its pellicle and cell nucleus indicated a close relationship with Euglenozoa. For 30 years after the description of the group, no genetic information was available.
Similar to other alveolates, the pellicle of Colponema is composed of three membranes and contains inflated cortical alveoli. They also have tubular cristae in their mitochondria. In contrast, the cells do not share important traits that characterize the other groups of alveolates, such as rhoptries, derived ciliature, or palintomy. No resting stages or sexual reproduction has been observed in culture.
Psilocybe authority Gastón Guzmán classified the species in the section Semilanceatae, a grouping of related species characterized by having roughly ellipsoid, usually thick-walled spores, and lacking pleurocystidia.Guzmán (1983), p. 342. The specific epithet pelliculosa is derived from the Latin pellicula, meaning "film", and refers to the gelatinous pellicle of the cap. The mushroom is commonly known as the "conifer Psilocybe" or the "striate Psilocybe".
When the solvent had evaporated he detached this pellicle and applied its grooved surface to a moist gelatine film on a glass plate. When dry, the gelatine bore a faithful record of the original rulings. In 1948 Merton made an important basic advance in the art of ruling diffraction gratings. Since 1880 these had been ruled groove by groove by the method used by Rowlands.
The pleurocystidia that are club-shaped occasionally have two or three finger-like prolongations. The cheilocystidia (cystidia on the gill edge) are numerous, and similar in morphology to the pleurocystidia. The flesh of the gill is homogenous, composed of enlarged hyphae that stain vinaceous-brown in iodine. The flesh of the cap has a well-differentiated pellicle, the cells of which bear numerous rodlike prolongations.
Both Colpodella and Perkinsus species have open sided truncated conoids (sometimes called pseudoconoids), rhoptries that occupy the length of the cell and smaller micronemes. Both the rhoptries and micronemes arise at the anterior portion of the cell. A three-layered pellicle lies beneath the plasma membrane and is otherwise composed of the alveolar membranes and widely separated microtubules that arise subapically. Some species have extrusive organelles (trichocysts).
Most Euglenozoa are photoautotrophic, but some are chemoorganotrophs (saprophytic). They are commonly found in freshwater. The members of the phylum Euglenozoa have a pellicle for support, a red eye spot called a stigma to orient the cell toward light, chlorophyll a and b to assist in the process of photosynthesis, contractile vacuoles, and flagella. 260x260px One major pathogen from the phylum Euglenozoa is Leishmania.
Just below the plasma membrane, and in the inner fluid region, cytoplasm can be found. The pellicle structure in the protist is a thin layer of protein that helps provide the cell with some support and protection. In addition to the plasma membrane, protists contain two different types of vacuoles. Contractile vacuoles help to maintain osmoregulation, and phagocytic vacuoles allow select protists to ingest food.
The company was formed in 1968 by Ed DiGiulio, a former director and vice-president of the Mitchell Camera Corporation. Their first product was a Silent Pellicle Reflex conversion of the Mitchell BNC 35 mm Motion picture camera. The company expanded into the 16-millimeter news camera market with the introduction of the CP-16. Documentary director Curtis Choy films with a CP-16.
Popular Photography, Volume 63 Number 6; June 1999. Pellicle mirror SLRs are very rare and are usually specialized designs for ultra-high speed (10+ frames per second) sequence shooting.Shell, pp 75–76Stafford, Hillebrand & Hauschild, pp 28–29 ;1966: Praktica Electronic (East Germany) first SLR with an electronically controlled shutter. Used electronic circuitry to time its focal-plane shutter instead of spring /gear/lever clockwork mechanisms.
Psilocybe strictipes has a farinaceous smell and taste. Pleurocystidia are absent and its lageniform cheilocystidia are 21-45 by 7-10 µm. The cap is 5 to 30 mm across, conic to campanulate to convex, smooth, and translucent-striate near the margin, often with a low umbo. It is walnut brown to dark rusty brown, with a smooth surface and a separable gelatinous pellicle.
The first bacteria to attach to these pellicle glycoproteins are gram positive aerobic cocci such as Streptococcus sanguinis. These bacteria are able to replicate in the oxygen rich environment of the oral cavity and form micro-colonies within minutes after attachment. Other bacteria including Streptococcus mutans are able to grow in these colonies. Streptococcus mutans is important because it is associated with dental caries.
To avoid the noise and vibration, many professional cameras offer a mirror lock-up feature, however, this feature totally disables the SLR's automatic focusing ability. Electronic viewfinders have the potential to give the 'viewing-experience' of a DSLR (through-the-lens viewing) without many of the disadvantages. More recently, Sony have resurrected the pellicle mirror concept in their "single-lens translucent" (SLT) range of cameras.
Schellackia sporozoites exist either free-floating or within a parasitophorous vacuole within a host cell. On occasion, multiple sporozoites have been observed to fit into a single expanded parasitophorous vacuole. The space within the vacuole surrounding the sporozoites contains a fine granular substance, and sometimes membranous residues. The sporozoites themselves are bound by a pellicle and contain a nucleus with a nucleolus and peripheral chromatin.
AAB are also responsible for the formation of the cellulose SCOBY. In its most common form, SCOBY is a gelatinous, cellulose-based biofilm or microbial mat found floating at the container's air-liquid interface. This consolidated layer is known formally as a pellicle. SCOBY pellicles, like sourdough starters, can serve the purpose of continuing the fermentation process into a new vessel and reproducing the desired product.
To identify the F2H, note the shutter speed dial has no T, B or 1/2000; has no self-timer and has a non-removable Type B focusing screen. Two further Canon models were produced with pellicle mirrors, the EOS RT and the EOS-1N RS, the RT being based on the EOS 600/EOS 630 and the 1N RS being based on the EOS-1N. As development of SLR cameras has progressed since these early models, fast sequence shooting has apparently become possible using ordinary moving mirrors in high-speed cameras, getting rid of the vulnerable pellicle mirror that was prone to dust and dirt. The mirror mechanism of conventional SLR cameras has improved since the Pellix mirror was introduced; the viewfinder is dark for only a very short time, the shutter lag is small, and the mirror-return is fast enough for rapid shooting.
The protoplasm of Vorticella is typically a translucent blue-white colour, but may contain a yellow or green pigment. The food vacuoles may show as a brown or grey colour, but depends on the food eaten. Zoochlorellae, food reserves and waste granules, which are abundant in the cytoplasm, may create the impression that Vorticella is an opaque cell. Vorticella has a pellicle with striae running parallel around the cell.
Ceratium hirundinella. Ceratium species are characterized by their horns and two flagella located in the transverse and longitudinal positions. Ceratium tripos is recognisable by its U-shaped horns Ceratium species belong to the group of dinoflagellates known as dinophysiales, meaning they contain armored plates. They contain a pellicle, which is a shell, that is made from the cell membrane and vesicles; vesicles are composed of cross-linked cellulose, forming the plates.
The pellicle divides into two structures known as the epicone and hypocone that lie above and below the transverse groove, the cingulum, respectively. Two rows of plates surround the epicone and hypocone in a particular pattern that may be inherited by offspring. These patterns may be used to identify groups of dinoflagellates or even species of Ceratium. The plates contain expanded horns, which is a characteristic feature of Ceratium species.
There is no sexual reproduction observed in the euglenoids; however, asexual reproduction can occur through mitosis followed by cytokinesis, where basal bodies and flagellar systems replicate first, followed by the feeding system. Esson, H. J.; Leander, B. S. (2006). “A model for the morphogenesis of strip reduction patterns in phototrophic euglenids: Evidence for heterochrony in pellicle evolution”. Evolution Development, 8 (4): 378-388. doi:10.1111/j.1525-142x.2006.00110.
Phacus and other Euglenids typically reproduce asexually. They do so by dividing their cells longitudinally, from the apex of the cell to the base. Until cytokinesis is fully complete, the cells remain attached to one another, forming what looks like a “two-headed” organism. Prior to cytokinesis, the amount of pellicle strips each cell has is doubled in order to have an equal number between each daughter cell.
Fimbriae found in Gram-negative have the pilin subunits covalently linked. Some aerobic bacteria form a thin layer at the surface of a broth culture. This layer, called a pellicle, consists of many aerobic bacteria that adhere to the surface by their fimbriae or "attachment pili". Thus, fimbriae allow the aerobic bacteria to remain on the broth, from which they take nutrients, while they congregate near the air.
Colonies of K. marxianus are cream to brown in colour with the occasional pink pigmentation due to production of the iron chelate pigment, pulcherrimin. When grown on Wickerham's Yeast-Mold (YM) agar, the yeast cells appear globose, ellipsoidal or cylindrical, 2–6 x 3–11 μm in size. In a glucose-yeast extract broth, K. marxianus grows to produce a ring composed of sediment. A thin pellicle may be formed.
The flagella have a beating action and are used for rapid movement. The proximal part of the long flagellum may adhere to the pellicle, which causes it to trail posteriorly. The trailing flagellum is always directed backwards and is attached to the body for a considerable distance (6-9μm) by an accessory filament called a funis. There are one to four funises (rib-like strictures) extending backwards beneath the body surface.
Developing microgametocytes have a peripheral nucleus without a visible nucleolus but contain dense patches of peripheral chromatin. The surface of the microgametocyte is covered in deep invaginations which provide increased surface area. Microgametes have flagella with a typical 9+2 axoneme structure, and five microtubules run parallel to the nucleus along the length of the gamete. Macrogametocytes are bound by a pellicle comprising two membranes perforated by multiple micropores.
Their earlier profession Canonflex of 1959 had failed due a premature introduction -- before professional accessories were ready. In 1972 Canon launched a Highspeed model with a fixed pellicle mirror that allowed the user to see the subject at all times. Equipped with a motor drive, the camera was able to shoot up to 9 frames per second—the highest speed of any motor driven camera at the time.
Many metal cations are also required in the process. EDTA control and extensive cation presence/absence tests show that Ca(II), Mn(II), Cu(II) and Zn(II) are all essential in this process, probably functioning as a part of a coenzyme or prosthetic group. Mg(II) has partial effect, while Fe(II) and Fe(III) are inhibitory to some degree. Flagella are considered to contribute to pellicle formation.
Sporozoites are elongated and straight or slightly curved in shape, and not particularly motile. When prepared with a Giemsa-stain, their oval and slightly unconventional nucleus becomes visible. Their pellicle comprises a thin outer membrane separated from a double inner membrane, underneath which lies 21 subpellicular microtubules evenly spaced around the periphery. Many micronemes are present in the anterior tip of the sporozoite, and a single mitochondrion containing tubular cristae lies behind the nucleus.
Gametocytes tend to take up almost the entirety of their host erythrocyte, and hence are covered by a thin layer of erythrocyte. They are contained within a trilaminar pellicle, consisting of a parasitophorous vacuole membrane, the gametocyte plasmalemma, and an inner double membrane. Multiple intracellular organelles are visible within the gametocytes, including mitochondria with tubular cristae, a Golgi apparatus, micronemes, primary lysosomes, and a microtubule organising centre comprising two centrioles. No visible cytosome is present.
The mirror design was the same as in the Pellix. In 1984, Canon released another version of their then "New F-1", which attained a record 14 frames per second performance, being the fastest analog SLR of that time. Nippon Kogaku KK, Japan introduced their high-speed Nikon F2H in 1976. The mirror is a pellicle rather than a conventional front surfaced mirror that swings out of the light path when the exposure is made.
Also had a swiveling live view LCD panel. The SLTs' fixed so-called "Translucent Mirror Technology" reflex mirrors (a revival of pellicle mirrors [see Canon Pellix above]) siphon off light to their fifteen phase comparison autofocus sensors to provide continuous autofocusing in their HD video mode.Anonymous, "Next: The Guts: Fixed Mirror: Inside Sony's new mirror system in the Alpha 55 and 33," p 20. Popular Photography, Volume 74 Number 11; November 2010. .
The unit also contained a built intervalometer for delays up to 1 frame per minute. The maximum speed was 3 frames per second. In 1972 Canon made a special Modification of the F-1 called the "High Speed Motor Drive Camera". It had a fixed pellicle (semi transparent) mirror, the motor drive motors were a permanent attachment (the camera's wind lever was removed – making it impossible to use without the motor drive).
The skin of raw peeled chestnuts can be relatively easily removed by quickly blanching the nuts after scoring them by a cross slit at the tufted end.An easy way of peeling the pellicle, or pithy skin Once cooked, chestnuts acquire a sweet flavour and a floury texture similar to the sweet potato. The cooked nuts can be used for stuffing poultry, as a vegetable or in nut roasts. They can also be used in confections, puddings, desserts and cakes.
Sometimes some of the hyphae become aggregated into peglike structures that project from the surface, and cause the appearance of scattered coarse spines on the cap when viewed under a 10X magnifying lens. The tissue beneath the pellicle is made entirely of greatly enlarged cells, which appear pale vinaceous in iodine stain. The mycelia of M. stylobates, when grown in pure culture, is bioluminescent, a phenomenon first reported in 1931. The fruit bodies are not known to be bioluminescent.
The pellicle mirror The semitransparent fixed mirror in the Pellix, for the first time successfully used in a 35mm SLR camera, lets about two- thirds (66%) of the light from the lens pass directly through to the film, while the rest is reflected to the viewfinder. The object of this arrangement - apart from accomplishing TTL metering, is for a simpler construction, a less noisy operation, and to get rid of the finder blackout during exposure. That is a favourable proposition, but the design has its flaws; the obvious one being loss of light, about one half stop (- 0.5 EV) in the exposure through the semitransparent mirror, and about one and three-fourths stop (- 1.7 EV) dimmer finder compared to using a fully reflecting mirror. A more serious problem however, is that the image forming light rays has to pass through the stationary pellicle mirror - in itself an obstruction, but over time the mirror surfaces also become soiled; it scatters the light and therefore degrades the projected image that forms the image on the film.
Psilocybe weilii caps range from (2)3 to 6(8.5) cm in diameter and are obtusely conic to convex to campanulate. The margin is incurved or inrolled when young, becoming irregularly lobulated then straight with age. Psilocybe weilii are subumbonate, hygrophanous, glabrous, and subviscid when moist from the separable gelatinous pellicle. It is translucent-striate at the margin, and purple brown or chestnut brown to dark brown, fading to buff or straw yellow as it dries, with the center remaining blackish brown.
The body and oral kinetids make up the infraciliature, an organization unique to the ciliates and important in their classification, and include various fibrils and microtubules involved in coordinating the cilia. The infraciliature is one of the main components of the cell cortex. Others are the alveoli, small vesicles under the cell membrane that are packed against it to form a pellicle maintaining the cell's shape, which varies from flexible and contractile to rigid. Numerous mitochondria and extrusomes are also generally present.
Dean is often interviewed by various TV and radio networks on clinically applicable issues. Dr. Hart attended press conferences in New York City and Long Island, NY about protecting people's eyes when viewing the solar eclipse of August 21, 2017 featured in newspapers and on television. As a scientist, Hart mastered and applied different techniques to laboratory and clinical research endeavors.Hart D, Plociniak M, Grimes G. Defining the physiologically normal coating and pathological deposit: an analysis of sulfur containing moieties and pellicle thickness on hydrogel contact lenses.
The cheilocystidia (cystidia found on the edges of the gills) are embedded in the hymenium and inconspicuous, measuring 22–36 by 5–11 μm. They are roughly filiform (like thin filaments), with numerous contorted branches or protuberances, and club-shaped with finger-like prolongations. The flesh of the gills is homogenous, and turns vinaceous-brown when stained in iodine. The flesh of the cap has a well-differentiated pellicle, with a differentiated but not very well-developed hypoderm, and hyphae that are 10–20 μm wide.
Phacus is a genus of unicellular excavates, of the phylum Euglenozoa (also known as Euglenophyta), characterized by its flat, leaf-shaped structure, and rigid cytoskeleton known as a pellicle. These eukaryotes are mostly green in colour, and have a single flagellum that extends the length of their body. They are morphologically very flat, rigid, leaf-shaped, and contain many small discoid chloroplasts. Phacus are commonly found in freshwater habitats around the globe and include several hundred species that continue to be discovered to this day.
Xylitol has been found to reduce mutans streptococci in plaque and saliva and reduce the binding of these to the acquired enamel pellicle. This in turn leads to less adherent plaque and a decrease in acid production. In addition, chewing xylitol gum will stimulate increased salivary flow which in turn increases the amount of calcium in the saliva and enhances the oral clearance. Additional saliva flow which includes chewing products such as gums that contain no fermentable carbohydrates can aid in the modulation of plaque pH.
The conventional SLR camera has a reflex mirror directing the light beam from the lens to the focusing screen in the viewfinder, which is swung out of the light path when the exposure is made and causing the viewfinder to go dark. This action adds a delay between pressing the shutter release and the actual exposure of the film. The first camera to employ the pellicle mirror as a beam splitter for the viewfinder was the Canon Pellix, launched by Canon Camera Company Inc. Japan in 1965.
Over the rest of the cell, except for a diminished mouth called the micropore, the membrane is supported by vesicles called alveoli, forming a semirigid pellicle. The presence of alveoli and other traits place the Apicomplexa among a group called the alveolates. Several related flagellates, such as Perkinsus and Colpodella, have structures similar to the polar ring and were formerly included here, but most appear to be closer relatives of the dinoflagellates. They are probably similar to the common ancestor of the two groups.
Epimenia babai, a member of the Solenogastres Aplacophorans are worm-like animals, with little resemblance to most other molluscs. They have no shell, although small calcified spicules are embedded in the skin; these spicules are occasionally coated with an organic pellicle that is presumably secreted by microvilli. Caudofoveates lack a foot while solenogasters have a narrow foot which lacks intrinsic musculature. The mantle cavity is reduced into a simple cloaca, into which the anus and excretory organs empty, and is located at the posterior of the animal.
Cells of rigifilids are covered with either a single or a double-layered submembrane pellicular lamina that makes them rigid in consistence. Slender branching filopodia emanate from a ventral aperture of the cell and are employed to collect bacteria upon which they feed and to attach the organism to the substratum. Around this aperture, the pellicle is reflexed around forming a peristomial collar. Other notable features are flat and irregular shaped mitocondrial cristae, a single dorsal nucleus and the lack of centrioles and cilia.
Tooth enamel and dentine are both made up of calcium deficient carbonated hydroxyapatite. Acid and/or chelators present in the food we consume penetrate through the plague, the pellicle and the protein/ lipid coating into the individual crystals. Hydrogen ions combine with carbonate and/ or phosphate, releasing all ions in the affected region, giving rise to direct surface etching/ erosion. Reducing the frequency of intake, minimises the duration to which enamel is exposed to acids, making it less susceptible to acid attack and allows the eroded tooth surface to remineralise.
These patterning techniques are self-aligned and do not require custom cutting or trim masks. For 2x-nm DRAM and flash, double patterning techniques should be sufficient. Current EUV throughput is still more than 3x slower than 193 nm immersion lithography, thus allowing the latter to be extended by multiple patterning. Furthermore, the lack of an EUV pellicle is also prohibitive. As of 2016, Intel was using SADP for its 10 nm node;Intel discusses 10nm however, as of 2017, the 36 nm minimum metal pitch is now being achieved by SAQP.
Two shapes of mitochondria are present – large, rounded mitochondria with tubular cristae are located beneath the pellicle, while smaller elongated mitochondria with a single row of cristae are present in aggregates. The nucleus is larger than the one found in microgametocytes and contains a large, compact nucleolus. The cytoplasm contains a dense RER network, as well as food, lipid, and other various vesicles. The presence of a high density of amylopectin granules in the cytoplasm causes it to have a foamy appearance, a characteristic maintained in the zygote.
The FT can also operate the later Canon FD series lenses in stop-down mode, but the earlier R series has a different lens aperture mechanism and cannot be used, although the bayonet fitting is similar. The standard kit lenses were Canon's 50mm f/1.8 ; 50mm f/1.4 and 58mm f/1.2, the body-only option was offered later. FT QL was introduced in March 1966, a year after the pellicle mirrored Canon Pellix. However it differs from the Pellix models, having a normal quick- return reflex mirror and offering stop-down TTL metering.
Primary studies done in the 1900s by Griessmann and Skuja had initially grouped Diplonemidae (or more specifically, the Diplonema and Rhynchopus taxa) with the euglenids. This was due to the two groups sharing many morphological similarities with the euglenids, such as metaboly, locomotion and a microtubule-reinforced feeding apparatus. However, this conclusion was met with some controversy, as diplonemids lacked characteristic features shared by all euglenids, such as possession of pellicle strips and paraxonemal rods on their flagella. Instead, they were placed in the euglenozoan phylum and shared this taxon with the kinetoplastids and euglenids.
Streptococcus gordonii is a Gram-positive bacterium included among some of the initial colonizers of the periodontal environment.American Academy of Periodontology 2010 In-Service Exam, question 82 The organism, along with related oral streptococci, has a high affinity for molecules in the salivary pellicle (or coating) on tooth surfaces. S. gordonii therefore can rapidly colonize clean tooth surfaces, and S. gordonii along with related organisms comprise a high percentage, up to 70%, of the bacterial biofilm that forms on clean tooth surfaces. Generally harmless in the mouth, S. gordonii can cause acute bacterial endocarditis upon gaining access systemically.
Some chestnuts have two cotyledons usually separated with deep grooves penetrating nearly all the way through the fruit; this makes them too fragile for the necessary manipulations during the cooking process. There also are other grooves on the surface, which means more embedded pellicle that must be painstakingly removed. "Marron"-quality nuts do not have the separation into two cotyledons; it appears in one piece and it shows few very shallow grooves. In Italy, the term marron denotes a specific high-quality cultivar of Castanea sativa bearing oblong fruits with a shiny, reddish epicarp and often exhibiting a small rectangular hilar scar.
He was born on April 21, 1822 in Ulysses, New York. He was motivated to search for a non-breakable, and clear substance on which he could place the images he utilized in his Biblical teachings. On May 2, 1887, the year Goodwin retired from the church he had served for twenty years, he filed a patent for "a photographic pellicle and process of producing same ... especially in connection with roller cameras", but the patent was not granted until 13 September 1898. In the meantime, George Eastman had already started production of roll-film using his own process.
Early 35 mm SLR cameras had similar functionality to larger models, with a waist-level ground-glass viewfinder and a mirror which remained in the taking position—blacking out the viewfinder—after an exposure, returning when the film was wound on. Innovations which transformed the SLR were the pentaprism eye-level viewfinder and the instant-return mirror—the mirror flipped briefly up during exposure, immediately returning to the viewfinding position. The half-silvered fixed pellicle mirror, without even the brief blackout of the instant-return mirror, was innovative but did not become standard. Through-the-lens light metering was an important advance.
The thickness of the deposit is controlled so that part (typically half) of the light which is incident at a 45-degree angle and not absorbed by the coating or substrate material is transmitted, and the remainder is reflected. A very thin half-silvered mirror used in photography is often called a pellicle mirror. To reduce loss of light due to absorption by the reflective coating, so-called "swiss cheese" beam splitter mirrors have been used. Originally, these were sheets of highly polished metal perforated with holes to obtain the desired ratio of reflection to transmission.
These neighbouring cells secrete an organic pellicle on the outside of the developing spicule, whose aragonite is deposited by the central cell; subsequent division of this central cell allows larger spines to be secreted in certain taxa. The organic pellicule is found in most polyplacophora (but not 'basal' chitons, such as Hanleya) but is unusual in aplacophora. Developmentally, sclerite-secreting cells arise from pretrochal and postrochal cells: the 1a, 1d, 2a, 2c, 3c and 3d cells. The shell plates arise primarily from the 2d micromere, although 2a, 2b, 2c and sometimes 3c cells also participate in its secretion.
In 1815, Nicol developed a method of preparing extremely thin sections of crystals and rocks for microscopical study. He hit upon the plan of cutting sections of fossil wood, so as to reveal its minutest vegetable structures under a microscope. He took a slice from the specimen to be studied, ground it perfectly flat, polished it, and cemented it by means of Canada balsam to a piece of plate-glass. The exposed surface of the slice was then ground down, until the piece of stone was reduced to a thin pellicle adhering to the glass, and the requisite degree of transparency was obtained.
The second step in the formation of SCOBY is the introduction of different bacteria into the liquid culture to convert the ethanol product of fermentation into organic acids such as lactic acid or acetic acid. These processes are known as lactic acid fermentation and ethanol metabolism respectively. A possible byproduct of this reaction is cellulose, which serves as the foundation for the SCOBY biofilm. Like yeasts, the species of bacteria chosen as well as culture conditions directly affect both the characteristics of the liquid kombucha product as well as the composition and morphology of the SCOBY pellicle.
Professional grade cameras are faster, with speeds up to ten frames per second (fps). The first 35 mm SLR to achieve such a shooting speed was Nikon's F High Speed Motor Drive camera, first developed for the 1971 Chicago Photo Expo with 7 fps. To enable this speed and allow the photographer to more easily track the moving subject, this camera used a fixed, semi- transparent pellicle mirror instead of a moving mirror. Later special Canon models used similar mechanisms to achieve such speeds, while cameras with moving mirrors reached approximately five frames per second by the 1980s.
Hot smoking exposes the foods to smoke and heat in a controlled environment such as a smoker oven or smokehouse. Hot smoking requires the use of a smoker which generates heat either from a charcoal base, heated element within the smoker or from a stove-top or oven; food is hot smoked by cooking and flavoured with wood smoke simultaneously. Like cold smoking, the item may be hung first to develop a pellicle; it is then smoked from 1 hour to as long as 24 hours. Although foods that have been hot smoked are often reheated or further cooked, they are typically safe to eat without further cooking.
Also constructed for the 1984 Summer Olympics was a high-speed camera for the sports photographers covering the event. This followed on from Canon's previous attempt at a high-speed sports photography camera, the F-1 High Speed Motor Drive camera, produced for the 1972 Winter Olympics held in Sapporo, Japan. This new camera attained a record 14 frames per second performance, achieved through the use of a fixed pellicle mirror instead of the normal moving mirror, a high-speed metal blade shutter, and a large and powerful motor unit and battery pack. It is estimated that under a hundred of these specialised cameras were constructed.
Then just half a year later, in the spring of 1965 Canon surprised the camera community with the remarkable Pellix. The new camera featured the much-expected TTL exposure metering facility, albeit employing the stop-down metering method. However, what makes the Pellix special, is that the TTL metering is accomplished using a stationary semitransparent pellicle reflex mirror instead of the traditional moving SLR mirror and placing a CdS meter cell behind it for the TTL exposure measurement. The cell, attached to an arm is swung up in front of the film gate using the stop down lever on the right-hand camera front, reading the light projected from the camera lens after passing through the semitransparent mirror.
These pellicle strips are a distinguishing feature of the euglenoids, that allows the cells to undergo metaboly, giving the cell flexibility and movement. Heteronema, under the light microscope, is morphologically similar to Paranema, where both groups are metabolic, have the ability to glide, have visible feedings rods and two different flagellum on opposite ends of the cell. Heteronema is separated into two specific morphogroups, one consisting of elongate and very flexible cells that move by gliding, holding the anterior flagellum out in front of the cell. This morphogroup includes the species H. scaphrum. In contrast, the second group consists of ovoid, more rigid cells that have a characteristic rapid “skidding” swimming behaviour.
Nitrocellulose film on a light box, showing deterioration, from Library and Archives Canada collection Cellulose is treated with sulfuric acid and potassium nitrate to give cellulose mononitrate. This was used commercially as 'celluloid', a highly flammable plastic used until the mid-20th century for lacquers and photographic film. On May 2, 1887, Hannibal Goodwin filed a patent for "a photographic pellicle and process of producing same ... especially in connection with roller cameras", but the patent was not granted until September 13, 1898. In the meantime, George Eastman had already started production of roll-film using his own process. Nitrocellulose was used as the first flexible film base, beginning with Eastman Kodak products in August, 1889.
The mirror had narrow slits cut into the surface to let the light reach the cell providing average metering. Late in the following year, a production model of the Pentax Spotmatic was shown whose CdS light meter cells were on the pentaprism, reading the light off the focusing screen providing average reading, yet keeping the Spotmatic name, but now written in one word. Another clever design appeared in 1965, the Canon Pellix employing a pellicle mirror that is semi-transparent, placing the meter cell on an arm swinging into the lightpass behind the mirror for meter reading. Mamiya Sekor came out with cameras such as the Mamiya Sekor TL and various other versions.
Another obstacle is the risk of light finding its way into the camera by way of the finder window during exposure, since there is no mirror to block the path in its up-position. This was also anticipated, and a finder blind is provided which is operated by turning the ring under the rewind knob, especially useful when leaving the camera on a stand. The Meter circuit is susceptible to breakage due to the CdS meter arm being moved into position behind the pellicle mirror during exposure reading. A special lens was made available for the Canon Pellix, the FLP 38mm 1:2.8, utilising the fact the camera has a stationary mirror that will not hit the lens' rear element.
Sony has introduced cameras with plasticSecrets of the Sony A55 pellicle-like mirrors, which it describes as "Single-Lens Translucent" cameras. These cameras divert a portion of incoming light to a phase-detection autofocus unit, while the remaining light strikes a digital image sensor. Sony "SLT" cameras employ an electronic viewfinder (EVF) allowing exposure value, white balance and other settings to be verified and adjusted visually before taking a picture, although typically the EVF displays far less dynamic range than the sensor. The refresh rate of the viewfinder is limited by the time it takes the sensor to make a usable exposure; thus in low light the frame rate of the viewfinder may be as low as four frames per second.
The image sensor feeds the electronic viewfinder, and also records still images and video on command. The utility of the SLT design is to allow full-time phase-detection autofocus during electronic viewfinder, live view, and video recording operation. With the advent of digital image sensors with integrated phase- detection, the SLT design is no longer required to accomplish this goal, as evidenced by cameras such as the Sony NEX-5R, Fujifilm X-100s, and Nikon 1, although the SLT design avoids having pixels unavailable for image formation due to their space on the sensor being occupied by a dedicated phase detection autofocus sensel. The term "translucent" is a misnomer for the actual SLT design, which employs a pellicle mirror that is not translucent.
The formation of the cellulose pellicle at the surface of the broth yields a product with unique characteristics that both bacteria and consumers find advantageous. Upon inoculation into the culture, bacteria such as Acetobacter immediately begin pulling glucose molecules together outside of the cell and joining them via β(1-4) linkages to form long, slender structures extending from their cell membranes called fibrils. The nanocellulose composing these fibrils demonstrates great strength and stability while still allowing hydrophilic interactions and biocompatibility, making it a great resource for the culture to use. A variety of inter and intramolecular bonding events join numerous fibrils together into the final, much larger structures known as microfibrils; because of the integrity of the microfibrils and the organized, linear nature of cellulose bonds, the resulting biofilm can also be referred to as a matrix or mat.
The pellicle rips into shreds when peeled. The pliant flesh is thin, 2 mm in the center of the cap and tapered evenly to the margin. The cap surface is covered with grayish fibrils; underneath the fibrils the color is initially the same as the cap, but becomes blackish-brown in age at the base or over lower parts. The gills are slightly darker than the cap in color, broadly adnate, but develop a slight decurrent tooth in age (when the gill separates slightly from the stem). The gills are broad (about 3 mm), with a close to subdistant spacing. Roughly 24 gills reach the cap edge from the stem; there are additionally 2 or three tiers of lamellulae—short gills that do not extend completely from the stem to the cap edge. The stem is long by 1.5–2.5 mm thick, and equal in width throughout its length. It is attached to its substrate (wood or sticks) by a grayish mat of mycelium.
BNC mount lenses cannot be used in reflex Mitchell cameras as their shorter back-focus will hit and damage the reflex viewer, which, in various versions, was a pellicle (partially silvered) mirror or a (100-percent silvered, first surface) rotating mirror. The abbreviation stands for "Blimped Newsreel Camera Reflex", which meant that it is a 35 mm camera originally intended for news reporting but included a blimp housing for sound stage shooting plus a reflex viewer to allow the camera operator to view the action through the lens while filming. The reflex option was only added in 1967, while the blimp option (thereby converting an NC, "Newsreel Camera", into a BNC, "Blimped Newsreel Camera") was available at the camera's introduction in 1934, but only a few BNC examples were made before the onset of WW-II, during which manufacture of "production" cameras was suspended. The lens mount is not identical across all variants, thus there is a marked difference between a BNC and BNCR mount, for instance.
They used ISO-style shoes with extra electrical contacts.Shell, pp 50–52, 130 Each SLR brand used incompatible contact configurations and the time of use-any-flash-with-any-SLR passed by the late 1970s. Note, although the hot shoe had been de facto standardized in the 1950s, the International Organization for Standardization did not promulgate its ISO 518 hot shoe specification until 1977. ;1965: Canon Pellix (Japan): first (really second after french Focaflex of 1959) pellicle reflex mirror SLR."Modern Photography's Annual Guide to 47 Top Cameras: Canon Pellix QL," p 93. Modern Photography, Volume 33, Number 12; December 1969. Lea, pp 44–45Matanle, p 149Shell, pp 43–46Wade, Short History. pp 121–122Wade, Collector's Guide. pp 140–142 Virtually all SLRs use fast-moving reflex mirrors that swivel out of the way to take the picture, causing mirror shock vibration, blacking-out the viewfinder and delaying shutter firing. Camera shake can blur the image and the subject (which might have moved) cannot be seen at the instant of exposure.
Nikon F3H High Speed 13 Frames per second The F3H, a high-speed camera, was introduced for press, sports photography and for the 1998 Nagano Olympics in Japan. However Nikon recently stated its true motivation on its website in that it "represented Nikon's reaction to the fact that, the previous year, a competitor had released a camera for high-speed continuous shooting that could shoot 10 fps". Following previous practice with the Nikon F High Speed and the F2H, it featured a fixed pellicle semi-transparent mirror, diverting 30% of the light through to the view finder, allowing the camera and the specially produced MD-4H motor drive to achieve up to 13 frames per second, when the MN-2 nicad battery is used (as opposed to 7.5 frames per second with eight AA alkaline batteries). The F3H had the appearance of an F3P modified for high-speed photography; however, under the skin were some advanced techniques to achieve the speeds required, including something Nikon have described as "the camera and the motor drive predict and control each other's operations, so that certain operations overlap".

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