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DictionarySeepalsySaturation Vapor Pressure
saturation vapor pressure[‚sach·ə′rā·shən ′vā·pər ‚presh·ər] (thermodynamics) The vapor pressure of a thermodynamic system, at a given temperature, wherein the vapor of a substance is in equilibrium with a plane surface of that substance's pure liquid or solid phase. Saturation Vapor Pressure in meteorology, the maximum possible vapor pressure at a given temperature. The higher the air temperature, the greater the saturation vapor pressure. The condensation of water vapor begins after the saturation vapor pressure is reached. The saturation vapor pressure is greater over supercooled water than over ice at the same temperature; it is greater over a convex water surface and smaller over a concave water surface than over a plane water surface. At a temperature of 30°C the saturation vapor pressure does not exceed 42.4 millibars; at 0°C it is 6.1 millibars, and at – 20°C it is equal to 1.27 millibars over water and 1.03 millibars over ice (1 millibar = 102 newtons per m2). Saturday night palsy
A group of transient neuromuscular defects affecting a person who falls in a stuporous state in an unnatural position, classically after an alcoholic ‘binge’, or overdose of sedativesSaturday night palsy Substance abuse A group of transient neuromuscular defects affecting a person who falls in a stuporous state in an unnatural position, classically after an alcoholic 'binge', or overdose of sedatives. See Alcoholic neuropathy. Saturday night palsyParalysis due to prolonged ischemia of the musculospiral nerve incident to compressing an arm against a hard edge. It occurs if the patient has been comatose or in a stupor or has fallen asleep with the arm hanging over the edge of a bed or chair. In some cultures individuals traditionally become intoxicated on Saturday night; while stuporous, they may remain in a position that allows nerve compression. Synonym: musculospiral paralysis; radial paralysis; Saturday night paralysisSunday morning paralysisSee also: palsy |