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 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 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
pure — 1 Pure, absolute, simple, sheer denote free from everything that is foreign to the true nature or the essential character of the thing specified. Pure distinctively suggests freedom from intermixture. When applied to concrete things, it usually… … New Dictionary of Synonyms
Water export — Water exports involve exporting freshwater from one country to another. Large increases in human population and economic growth throughout the world during the twentieth century placed a huge stress on the world’s freshwater resources. Combined… … Wikipedia
Water supply and sanitation in Portugal — is characterized by important advances in access to services, technologies and service quality over past decades (1980s ndash;1990s), partially achieved thanks to important funds from the European Union. Nevertheless, sanitation still remains… … Wikipedia
Water and life — Water has many unusual chemical properties which determine the unique physical properties that makes it ideal as a medium for life to proliferate. All known forms of life depend on it.IceVery importantly, due to the unusual structure of water… … Wikipedia
Water treatment — describes those processes used to make water more acceptable for a desired end use. These can include use as drinking water, industrial processes, medical and many other uses. The goal of all water treatment process is to remove existing… … 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 (molecule) — Chembox new Name = Water (H2O) ImageFileL1 = Water 2D labelled.png ImageSizeL1 = 120px ImageNameL1 = The water molecule has this basic geometric structure ImageFileR1 = Water molecule 3D.svg ImageSizeR1 = 100px ImageNameR1 = Space filling model… … Wikipedia