- water activity
(aw)A quantitative measure of water availability in the habitat; the water activity of a solution is one-hundredth its relative humidity.
Microbiology. Aard_Wark . 2009.
Look at other dictionaries:
Water activity — or aw is a measurement of the energy status of the water in a system. It is defined as the vapor pressure of water above a sample divided by that of pure water at the same temperature; therefore, pure distilled water has a water activity of… … Wikipedia
Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) … Wikipedia
Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… … Wikipedia
Water fasting — is a type of fasting in which the practitioner consumes only water. One may water fast for a variety of reasons, including health improvement and medical and religious requirements.Health improvementSome engage in water fasting as a detox diet.… … Wikipedia
Water supply and sanitation in the European Union — still is under the responsibility of each member state. Nevertheless, the European Union established some policies which impact the National water strategies tremendously. However, WSS evolved in every Member State independently until the… … Wikipedia
Water intoxication — Classification and external resources Water intoxication, also known as water poisoning, is a potentially fatal disturbance in brain functions that results when the normal balance of electrolytes in the body is pushed outside of safe limits by… … Wikipedia
Water potential — is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure, or matrix effects… … Wikipedia
Water Resistant mark — Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured… … Wikipedia
Water fight — Water warfare redirects here. For armed conflict over water resources, see water war. A water fight is a type of mock combat using various water dispensing devices to soak opponents. Everything from buckets to balloons to water guns and even… … Wikipedia
Water supply and sanitation in Honduras — Water supply systems which use gravity correspond to 93% of all constructed systems. Mixed and pump using systems correspond to 4.5%. The scattered rural population intensely depends on about 15,000 dug wells. [… … Wikipedia