This experiment actually showed that different people lose heat at dramatically different rates.
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"Apartments lose heat in the winter," The New York Times reported in December.
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The city's 600,000 NYCHA residents regularly lose heat and hot water in the winter.
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Avoid alcohol and caffeine, because they can cause your body to lose heat more rapidly.
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Others may even evolve to cope—perhaps by shrinking, because smaller frames lose heat more quickly.
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"Every year in the winter, we lose heat for a week," the sixth-grade teacher said.
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All objects lose heat in the form of infrared radiation, which is invisible to the human eye.
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The outlet also reported that officials advised against drinking alcohol, which causes the body to lose heat faster.
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Smaller animals lose heat more easily—a polar bear is massive in part to hold on to body heat.
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When you're trying to cool down, the carbon-coated layer is on the outside, and you lose heat by radiation.
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The radiator could expand when it's hot to lose heat quickly, and contract in the cold to prevent losing too much.
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"We normally get rid of excess body heat by sweating and we evaporate and we lose heat via evaporation," said Slovis.
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"They would lose heat," says Dr. Gómez-Laich, who is a researcher at the Instituto de Biologia de Organismos Marinos in Argentina.
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"Plate tectonics is a relatively benign way for Earth to lose heat," said Peter Cawood, an Earth scientist at Monash University in Australia.
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It was long known that wind caused objects to lose heat more quickly, by blowing away the layer of warmer air that surrounds them.
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That helps the body lose heat to the environment, dropping its core temperature — a signal that it's time to go to sleep, and stay asleep.
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There's a brief moment of satisfaction the moment they hit your tongue, but that dissipates as quickly as the fries lose heat — which is quickly.
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Absolutely. Moreover, Roberts is exactly the kind of actress Turner might resent, because Roberts became famous just at the moment that Turner's career was beginning to lose heat.
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The Pennsylvania Department of Health cautioned residents to keep time outdoors to a minimum and to avoid alcohol, excessive consumption of which can make your body lose heat faster.
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As a direct result of this chronic underinvestment, residents lose heat in the winter, need kitchen repairs to cook their meals, and do not have adequate accommodations for residents with disabilities.
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For example, the pipes that distribute heat in the smaller buildings run through a hollow area below the first floor that can be hard to keep insulated, which can cause pipes to lose heat.
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"When an individual loses weight and body fat they may experience cold extremities because they have less insulation and lose heat more quickly," says Jessica Bihuniak, assistant professor of clinical nutrition at NYU's Steinhardt School.
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"We normally get rid of excess body heat by sweating, and we evaporate, and we lose heat via evaporation," said Dr. Corey Slovis, a professor and chairman of emergency medicine at Vanderbilt University Medical Center.
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When the body is exposed to the cold for prolonged periods, it begins to lose heat faster than it can produce it, according to the C.D.C. Wet conditions are especially dangerous, even in relatively warmer temperatures.
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Women trigger that alert system earlier on, because with less muscle mass (but more surface-area-to-volume ratio—remember, skin is where we exchange heat and cold to regulate our temp), they lose heat more quickly.
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While other mammals pant or have circulatory systems that are closer to the skin to help them lose heat and stay cool, humans are generally adept at sweating to keep our core temperature in a "normal range" of 101-103 degrees Fahrenheit.
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These barbs come together to lock in tiny pockets of air (as below), which help insulate the birds but also prevent supercooled liquid from reaching its solid surfaces (from which the penguin might lose heat as skinbeasts like you or I would).
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This time, they also factored in atmospheric dryness of the atmosphere, as drier air makes snow cover lose heat faster, lead study author Ted Scambos, a senior research scientist at the National Snow and Ice Data Center at the University of Colorado Boulder, said in a statement .
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The age of this cluster has allowed three low mass brown dwarfs to be discovered. These objects lose heat as they age, so they are more readily discovered while they are still young.
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Solar gains can hamper internal load dominated buildings, contributing to overheating, while helping skin dominated buildings that lose heat due to poor envelope performance. Therefore, architects and building designers must strategically control solar gains based on the building characteristics.
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It provides a mechanism for speech, laughter and similar expressions of the emotions. It is also used for reflexes such as yawning, coughing and sneezing. Animals that cannot thermoregulate by perspiration, because they lack sufficient sweat glands, may lose heat by evaporation through panting.
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Since the underlying blood vessels are so close to the surface, the animal can control the amount of surface area exposed to the environment in order to gain or lose heat. Also, like most armadillos, they rely mostly on a sense of smell to find each other and their prey.
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When the chicks hatch, they are brooded for 8 to 10 days by both sexes. Nests with fewer young are brooded more, presumably because smaller broods lose heat faster. After 25 to 29 days, the young leave the nest for this first time, and become independent after about two weeks.
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The average temperature increase was 2.2 °C, at 1.5 cm depth and 1.1 °C at 2 cm. This is similar to silicate-gel hot packs, except hot packs start to lose heat at 15–20 minutes, whereas the portable heat wraps maintained their heat for the entire 90 minute application.
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39 . On very hot days, a koala may climb down to the coolest part of the tree which is cooler than the surrounding air. The koala hugs the tree to lose heat without panting. On warm days, a koala may rest with its back against a branch or lie on its stomach or back with its limbs dangling.
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The appearance is often described as a shiny film looking like a layer of vaseline. The eyelids and mouth may have the appearance of being forced open due to the tightness of the skin. There can be associated eversion of the eyelids (ectropion). Collodion baby can have severe medical consequences, mainly because the baby can lose heat and fluid through the abnormal skin.
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The reduced growth rate is likely due to a reduced capacity to lose heat generated by metabolism. Higher stocking densities are associated with increased dermatitis including foot pad lesions, breast blisters and soiled plumage. In a large-scale experiment with commercial farms, it was shown that the management conditions (litter quality, temperature and humidity) were more important than stocking density.
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Block diagram of Pirani gauge Curves to convert air readings to other gases In order to understand the technology, consider that in a gas filled system there are four ways that a heated wire transfers heat to its surroundings. # Gas conduction at high pressure E\propto dT/dr (r representing the distance from the heated wire) # Gas transport at low pressure E \propto P(T_1-T_0)/\surd T_0 # Thermal radiation E \propto (T_1^4 - T_0^4) # End losses through the support structures A heated metal wire (sensor wire, or simply sensor) suspended in a gas will lose heat to the gas as its molecules collide with the wire and remove heat. If the gas pressure is reduced the number of molecules present will fall proportionately and the wire will lose heat more slowly. Measuring the heat loss is an indirect indication of pressure.
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Air movement can have a significant influence on human thermal comfort. Wind chill in cold conditions is considered detrimental, but air movement in neutral to warm environments is considered beneficial. This is because normally under conditions with air temperatures above about 74 °F, the body needs to lose heat in order to maintain a constant internal temperature. Unlike air conditioners, which cool rooms, fans cool people.
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Big OPUR Dew Condenser in Corsica A radiative dew condenser test site at village Kothar in the north-west India near Arabian sea coast. By the end of the twentieth century, the mechanics of how dew condenses were much better understood. The key insight was that low-mass collectors which rapidly lose heat by radiation perform best. A number of researchers worked on this method.
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In India before the invention of artificial refrigeration technology, ice making by nocturnal cooling was common. The apparatus consisted of a shallow ceramic tray with a thin layer of water, placed outdoors with a clear exposure to the night sky. The bottom and sides were insulated with a thick layer of hay. On a clear night the water would lose heat by radiation upwards.
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During the cooler spring and fall months, A. versicolor have diurnal foraging activity. During the hotter summer months, they tend to forage more at night when the soil temperatures are cooler. When temperatures are their hottest and individuals find themselves stranded away from the nest, they will find a cooler surface such as a rock and press their body against it to try and lose heat.
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The close relationship between Peltier and Seebeck effects can be seen in the direct connection between their coefficients: \Pi = T S (see below). A typical Peltier heat pump involves multiple junctions in series, through which a current is driven. Some of the junctions lose heat due to the Peltier effect, while others gain heat. Thermoelectric heat pumps exploit this phenomenon, as do thermoelectric cooling devices found in refrigerators.
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Buildings lose heat through conduction during cold weather. Engineers use heat load calculations to determine the HVAC needs of the space being cooled or heated. :A heat pump is a compressor that cycles hot or cold air. It is a device that is designed to move thermal energy in the opposite direction of heat flow by absorbing heat from a cold space which is released to a warmer space.
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Humans may also experience lethal hyperthermia when the wet bulb temperature is sustained above for six hours. The opposite condition, when body temperature decreases below normal levels, is known as hypothermia. It results when the homeostatic control mechanisms of heat within the body malfunction, causing the body to lose heat faster than producing it. Normal body temperature is around , and hypothermia sets in when the core body temperature gets lower than .
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This leads to a global cooling effect. In essence, they act as the reverse of a greenhouse gas, which tends to allow visible light from the sun through, whilst blocking infrared light emitted from the Earth's surface and its atmosphere. The particles also radiate infrared energy directly, as they lose heat into space. Solar radiation reduction due to volcanic eruptions All aerosols both absorb and scatter solar and terrestrial radiation.
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Volcanism on Io to lose heat imaged by LORRI camera of the New Horizons probe Aside from the Earth, remote sensing has made planetary exploration possible without sending an astronaut into space. For most planetary explorations, due to the thick atmosphere, radar is a suitable instrumentation to investigate planetary surface. Radar can penetrate the atmosphere and detect the surface roughness. Also, topographic maps could be derived from radar altimetry and InSAR methods, for instance in the mapping of Venus.
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When the water surface begins to lose heat rapidly, the water becomes supercooled. Turbulence, caused by strong winds or flow from a river, will mix the supercooled water throughout its entire depth. The supercooled water will already be encouraging the formation of small ice crystals (frazil ice) and the crystals will be mixed into the upper layer and form a surface layer. Sea ice growth in turbulent water differs from sea ice growth in calm water.
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In practice, an anesthetic is rarely used during dubbing and as a consequence, the RSPCA Australia is opposed to dubbing on poultry intended to be exhibited at shows, and describes the practice as a cause of pain and distress. The comb and wattles function in thermoregulation; blood circulating from the comb and the wattles helps the bird lose heat during hot weather. The comb is also used in mate-assessment in some poultry species.Jones, E.K.M. and Prescott, N.B., (2000).
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Temperatures in the Sierra do not vary greatly on a seasonal basis; the hottest month averages and the coolest month, in the upper elevations. Diurnal temperatures, however, vary dramatically, from cold mornings to hot afternoons. The almost vertical sun and the rarefied air in the higher Sierra region allow the land to warm quickly during the day and lose heat quickly at night. Mornings typically are bright and sunny, whereas afternoons often are cloudy and rainy.
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Nest moisture, solar radiation, heat produced by the metabolic activities of workers, and microbial activity in the nest material all contribute to nest thermoregulation. Dry, exposed F. polyctena nests have higher temperatures during the evening, but lose heat slowly throughout the night. This fluctuation is due to the solar radiation absorbed by the nest and workers during the day. When the workers return in the evening, they have high body temperatures from foraging in the sun that warm the interior of the nest.
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For example, the way Io loses its internal heat is very different from how the Earth and other rocky planets lose heat at this time. Io appears to lose almost all its heat via a "heat pipe" process where volcanic eruptions that cover about 1% of the surface of the body. On Earth, plate tectonics mixes large slabs of cold oceanic crust into the warm mantle. On the Moon and Mars, most of the current heat loss is by conduction through the crust.
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Explanations for -scaling tend to assume that metabolic rates scale to avoid heat exhaustion. Because bodies lose heat passively via their surface, but produce heat metabolically throughout their mass, the metabolic rate must scale in such a way as to counteract the square–cube law. The precise exponent to do so is . Such an argument does not address the fact that different organisms exhibit different shapes (and hence have different surface-to-volume ratios, even when scaled to the same size).
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Indirect circulation loops glycol or some other fluid through the solar panels and uses a heat exchanger to heat up the domestic water. The two most common types of collector panels are Flat-Plate and Evacuated-tube. The two work similarly except that evacuated tubes do not convectively lose heat, which greatly improves their efficiency (5%-25% more efficient). With these higher efficiencies, Evacuated-tube solar collectors can also produce higher- temperature space heating, and even higher temperatures for absorption cooling systems.
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This fits with the ecology and morphology of the subspecies, as a highly distinctive tortoise adapted to feeding on low vegetation rather than the grazing habits of the Seychelles giant tortoise and Aldabra giant tortoise. Due to its unusual 'saddle-backed' shape, this is the only Seychelles tortoise species that regularly basks in the sun. The other subspecies do so occasionally, but Arnold's giant tortoises rapidly lose heat from the skin of their exposed necks and need to heat up in the sun in the mornings.
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Cats conserve heat by reducing the flow of blood to their skin and lose heat by evaporation through their mouths. Cats have minimal ability to sweat, with glands located primarily in their paw pads, and pant for heat relief only at very high temperatures (but may also pant when stressed). A cat's body temperature does not vary throughout the day; this is part of cats' general lack of circadian rhythms and may reflect their tendency to be active both during the day and at night.
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If skin temperature is greater than that of the surrounding air temperature, the body can lose heat by convection and conduction. But, if air temperature of the surroundings is greater than that of the skin, the body gains heat by convection and conduction. In such conditions, the only means by which the body can rid itself of heat is by evaporation. So, when the surrounding temperature is higher than the skin temperature, anything that prevents adequate evaporation will cause the internal body temperature to rise.
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At higher temperatures, pigs lose heat by wallowing in mud or water via evaporative cooling; although it has been suggested that wallowing may serve other functions, such as protection from sunburn, ecto-parasite control, and scent- marking. Pigs are one of four known mammalian species which possess mutations in the nicotinic acetylcholine receptor that protect against snake venom. Mongooses, honey badgers, hedgehogs, and pigs all have modifications to the receptor pocket which prevents the snake venom α-neurotoxin from binding. These represent four separate, independent mutations.
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Some free-radical recombinations emit ultraviolet light, which is only observable through fluorescence. One important candoluminescence mechanism is that the candoluminescent material catalyzes the recombination, enhancing the intensity of the emission. Extremely narrow-wavelength emission by the combustion products is often an important feature in this process, because it reduces the rate at which the free radicals lose heat to radiation at invisible or non-fluorescence-exciting wavelengths. In other cases, the excited combustion products are thought to directly transfer their energy to luminescent species in the solid material.
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If this system fails, the bell carries an on-board gas supply which is plumbed into the bell gas panel and can be switched by operating the relevant valves. On-board gas is generally carried externally in several storage cylinders of 50 litres capacity or larger, connected through pressure regulators to the gas panel. Helium is a very effective heat transfer material, and divers may lose heat rapidly if the surrounding water is cold. To prevent hypothermia, hot-water suits are commonly used for saturation diving, and the breathing gas supply may be heated.
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Joel Asaph Allen seated at desk while reading in 1890 Joel Asaph Allen (July 19, 1838 – August 29, 1921) was an American zoologist, mammalogist, and ornithologist. He became the first president of the American Ornithologists' Union, the first curator of birds and mammals at the American Museum of Natural History, and the first head of that museum's Department of Ornithology. He is remembered for Allen's rule, which states that the bodies of endotherms (warm-blooded animals) vary in shape with climate, having increased surface area in hot climates to lose heat, and minimized surface area in cold climates, to conserve heat.
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Thermal attacks can be performed after the victim had authenticated, alleviating the need for in-situ observation attacks (e.g., shoulder surfing attacks) that can be affected by hand occlusions. While smudge attacks can reveal the order of entries of graphical passwords, such as the Android Lock Patterns, thermal attacks can reveal the order of entries even in the case of PINs or alphanumeric passwords. The reason thermal attacks leak information about the order of entry is because keys and buttons that the user touches first lose heat over time, while recently touched ones maintain the heat signature for a longer time.
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Fish are cold-blooded, and in general their body temperature is the same as that of their surroundings. They gain and lose heat through their skin and during respiration and are able to regulate their circulation in response to changes in water temperature by increasing or reducing the blood flow to the gills. Metabolic heat generated in the muscles or gut is quickly dissipated through the gills, with blood being diverted away from the gills during exposure to cold. Because of their relative inability to control their blood temperature, most teleosts can only survive in a small range of water temperatures.
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The neotenous individuals have higher survivorship as well as higher fecundity than the salamanders that had gone to the adult form in the higher altitude and cooler environment. Insects in cooler environments tend to show neoteny in flight because wings have a high surface area and lose heat quickly, thus it is not advantageous for insects in that environment to metamorphose into adults. Many species of salamander, and amphibians in general, are known to have neotenized characteristics because of the environment they live in. Axolotl and olm are species of salamander that retain their juvenile aquatic form throughout adulthood, examples of full neoteny.
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This traps urban air near the surface, and keeping surface air warm from the still- warm urban surfaces, resulting in warmer nighttime air temperatures within the UHI. Other than the heat retention properties of urban areas, the nighttime maximum in urban canyons could also be due to the blocking of "sky view" during cooling: surfaces lose heat at night principally by radiation to the comparatively cool sky, and this is blocked by the buildings in an urban area. Radiative cooling is more dominant when wind speed is low and the sky is cloudless, and indeed the UHI is found to be largest at night in these conditions.
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As oranges are sensitive to frost, there are different methods to prevent frost damage to crops and trees when subfreezing temperatures are expected. A common process is to spray the trees with water so as to cover them with a thin layer of ice that will stay just at the freezing point, insulating them even if air temperatures drop far lower. This is because water continues to lose heat as long as the environment is colder than it is, and so the water turning to ice in the environment cannot damage the trees. This practice, however, offers protection only for a very short time.
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Travel mug Travel mugs (introduced in the 1980s) generally employ thermal insulation properties for transporting hot or cold liquids. Similar to a vacuum flask, a travel mug is usually well-insulated and completely enclosed to prevent spillageMorry Karp "Travel mug" Issue date: October 5, 1993 or leaking, but will generally have an opening in the cover through which the contents can be consumed during transportation without spillage. As the primary mechanism by which hot (not warm) beverages lose heat is evaporation a lid, even a thin plastic one as used on disposable coffee cups which conducts heat quite quickly, also serves a vital role in keeping the drink hot. Mugs with inner and outer walls, but not vacuum treated, are generally called double wall mugs.
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He concluded that the crest's blood-vessel patterns did not differ much from those seen on bones under the beaks of birds, which are used for transporting nutrients to the bone and soft tissues rather than for thermoregulation. Witton noted that although bird beaks lose heat quickly, that is not what they were developed for; the crests of pterosaurs might also have had an effect on thermoregulation, without this being their primary function. The crest of T. sethi has been compared to a toucan's bill. Pêgas and colleagues noted that sexual dimorphism in crest size and shape has been proposed for some pterosaurs; the crest shape seen in the T. sethi holotype may correlate with one sex and may have been the result of sexual selection.
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In addition to considerations of flavour, the order of these steps is thought to have been, historically, an indication of class. Only those wealthy enough to afford good-quality porcelain would be confident of its being able to cope with being exposed to boiling water unadulterated with milk. A further point of discussion on when to add milk is how it affects the time taken for the liquid to reach a drinkable temperature. While adding milk first will cause an initial drop in temperature which leads to a more shallow cooling curve (thus slower cooling) while also increasing volume (which would slightly increase the surface area through which the tea could lose heat), one study noted that adding milk first leads to the tea retaining heat out of all proportion with these effects.
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The orbits of any Earth trojans could make them less energetically costly to reach than the Moon, even though they will be hundreds of times more distant. Such asteroids could one day be useful as sources of elements that are rare near Earth's surface. On Earth, siderophiles such as iridium are difficult to find, having largely sunk to the core of the planet shortly after its formation. A small asteroid could be a rich source of such elements even if its overall composition is similar to Earth's; because of their small size, such bodies would lose heat much more rapidly than a planet once they had formed, and so would not have melted, a prerequisite for differentiation (even if they differentiated, the core would still be within reach).
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If Zibold's condenser worked at all, this was probably due to fact that a few stones near the surface of the mound were able to lose heat at night while being thermally isolated from the ground; however, it could never have produced the yield that Zibold envisaged. Fired with enthusiasm, the party returned to France and set up the International Organisation for Dew Utilization (OPUR), with the specific objective of making dew available as an alternative source of water. OPUR began a study of dew condensation under laboratory conditions; they developed a special hydrophobic film and experimented with trial installations, including a collector in Corsica. Vital insights included the idea that the mass of the condensing surface should be as low as possible so that it cannot easily retain heat, that it should be protected from unwanted thermal radiation by a layer of insulation, and that it should be hydrophobic, so as to shed condensed moisture readily.
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