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The solubility of oxygen in water is temperature-dependent, and about twice as much (14.6 mg/L) dissolves at 0 °C than at 20 °C (7.6 mg/L). [13] [50] At 25 °C and 1 standard atmosphere (101.3 kPa) of air, freshwater can dissolve about 6.04 milliliters (mL) of oxygen per liter, and seawater contains about 4.95 mL per liter. [51]
In contrast to surgical embolectomy for acute PE, treatment of CTEPH necessitates a true bilateral endarterectomy (removal of blockage from the blood vessels) through the medial layer of the pulmonary arteries, which is performed under deep hypothermia (lowering of body temperature) and circulatory arrest (temporary stoppage of blood flow), [16 ...
134 K, highest-temperature superconductor at ambient pressure, mercury barium calcium copper oxide; 165 K, glass point of supercooled water; 184.0 K (–89.2 °C), coldest air recorded on Earth; 192 K, Debye temperature of ice; 273.15 K (0 °C), melting point of bound water; 273.16 K (0.01 °C), temperature of triple point of water; c. 293 K ...
Temperature lag, also known as thermal inertia, is an important factor in diurnal temperature variation. Peak daily temperature generally occurs after noon, as air keeps absorbing net heat for a period of time from morning through noon and some time thereafter. Similarly, minimum daily temperature generally occurs substantially after midnight ...
During this phase, body temperature and heart rate fall, and the brain uses less energy. [12] REM sleep, also known as paradoxical sleep, represents a smaller portion of total sleep time. It is the main occasion for dreams (or nightmares ), and is associated with desynchronized and fast brain waves, eye movements, loss of muscle tone, [ 20 ...
The dromedary can conserve water by reducing perspiration by fluctuating the body temperature throughout the day from 31 to 41.7 °C (87.8 to 107.1 °F). The kidneys are specialized to minimize water loss through excretion. Groups of camels avoid excess heat from the environment by pressing against each other.
It is the eighth most abundant element in the human body by weight, [101] about equal in abundance to potassium, and slightly greater than sodium and chlorine. [102] A 70 kg (150 lb) human body contains about 140 grams (4.9 oz) of sulfur. [103]
Thermal imaging can detect elevated body temperature, one of the signs of swine flu. At some point, influenza B virus diverged into two strains, named the B/Victoria-like and B/Yamagata-like lineages, both of which have been circulating in humans since 1983. [23]