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... property despite the fact that most ferroelectric materials do not have iron in their lattice. Regular, or normal, ferroelectrics are key materials in microelectronics [2,3]. Their excellent dielectric properties make them suitable for electronic components such as tunable capacitors and memory cell ...
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Analyzing the dynamics of brain circuits with

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Dynamic van der Waals theory

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Physical Chemistry Examples Class for Second Year Students
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... 2. When reading for the second time, write down all data, and convert them to the required units. (a) If you have to calculate ratio of values, conversion is not necessary, but make sure that you have the data in the same units. You can save time in this way. (b) Temperature must always be changed t ...
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... in boreholes are employed to reconstruct the paleoclimate and temperature is used as a “tracer”, e.g., for the infiltration of warm water from a river or of rain into permafrost soils. The thermal dynamics of geologic formations is also of interest for a number of engineering applications. These inc ...
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... the critical blow-off gas mass flow rate never exceeds 0.15 kg m-* s-’ (Fig. 2) but to avoid porous filament temperatures higher than 700 K, the blow-off gas mass flow rate has to be between 1 and 10 kg mm2s-‘. The pressure drop in the porous filament is not a critical parameter if the porosity is e ...
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Thermoregulation

Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. A thermoconforming organism, by contrast, simply adopts the surrounding temperature as its own body temperature, thus avoiding the need for internal thermoregulation. The internal thermoregulation process is one aspect of homeostasis: a state of dynamic stability in an organism's internal conditions, maintained far from equilibrium with its environment (the study of such processes in zoology has been called physiological or physiological ecology). If the body is unable to maintain a normal temperature and it increases significantly above normal, a condition known as hyperthermia occurs. For humans, this occurs when the body is exposed to constant temperatures of approximately 55 °C (131 °F), and with prolonged exposure (longer than a few hours) at this temperature and up to around 75 °C (167 °F) death is almost inevitable. Humans may also experience lethal hyperthermia when the wet bulb temperature is sustained above 35 °C (95 °F) for six hours. The opposite condition, when body temperature decreases below normal levels, is known as hypothermia.It was not until the introduction of thermometers that any exact data on the temperature of animals could be obtained. It was then found that local differences were present, since heat production and heat loss vary considerably in different parts of the body, although the circulation of the blood tends to bring about a mean temperature of the internal parts. Hence it is important to identify the parts of the body that most closely reflect the temperature of the internal organs. Also, for such results to be comparable, the measurements must be conducted under comparable conditions. The rectum has traditionally been considered to reflect most accurately the temperature of internal parts, or in some cases of sex or species, the vagina, uterus or bladder.Occasionally the temperature of the urine as it leaves the urethra may be of use in measuring body temperature. More often the temperature is taken in the mouth, axilla, ear or groin.Some animals undergo one of various forms of dormancy where the thermoregulation process temporarily allows the body temperature to drop, thereby conserving energy. Examples include hibernating bears and torpor in bats.
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