residual-water content

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• 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 retention curve — is the relationship between the water content, θ, and the soil water potential, ψ. This curve is characteristic for different types of soil, and is also called the soil moisture characteristic.It is used to predict the soil water storage, water… …   Wikipedia

• 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 heating — is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have… …   Wikipedia

• water mass — n. a large body of oceanic water usually identified by a well defined relationship between temperature and salinity or chemical content: usually a mixture of two or more such bodies, each having a specified temperature and salinity * * * ▪… …   Universalium

• Water purification — This article is about large scale, municipal water purification. For portable/emergency water purification, see portable water purification. For industrial water purification, see deionized water. For distilled water, see distilled water. Water… …   Wikipedia

• heavy water — water in which hydrogen atoms have been replaced by deuterium, used chiefly as a coolant in nuclear reactors. Also called deuterium oxide. [1930 35] * * * or deuterium oxide Water composed of two atoms of deuterium (D; a heavy isotope of… …   Universalium

• bottom water — Lowermost layer of ocean water that can be distinguished by its characteristic low temperature, high density, and low oxygen content compared with surface waters. Most bottom waters are formed near Antarctica during the southern winter. The… …   Universalium

• Portable water purification — devices – also known as point of use (POU) water treatment systems and field water disinfection techniques – are self contained units that can be used by recreational enthusiasts, military personnel, survivalists, and others who must… …   Wikipedia

• Coal-water slurry fuel — (CWSF or CWS or CWF) is a fuel which consists of fine coal particles suspended in water. Presence of water in CWS reduces harmful emissions into the atmosphere, makes the coal explosion proof, makes use of coal equivalent to use of liquid fuel (e …   Wikipedia

• Freeze drying — (also known as lyophilization or cryodesiccation) is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport. Freeze drying works by freezing the material and then reducing the… …   Wikipedia