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Physical vapor deposition (PVD), sometimes called physical vapor transport (PVT), describes a variety of vacuum deposition methods which can be used to produce thin films and coatings on substrates including metals, ceramics, glass, and polymers. PVD is characterized by a process in which the material transitions from a condensed phase to a ...
Dalecarlia Water Treatment Plant, Washington, D.C. Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.
Paraventricular nucleus of thalamus, a portion of the thalamus; Portal vein thrombosis, a liver disease involving blood clots; Psychomotor vigilance task, a sustained-attention, reaction-timed task that measures the speed with which subjects respond to a visual stimulus
Sewage treatment plant (a type of wastewater treatment plant) in La Crosse, Wisconsin. Wastewater treatment is a process which removes and eliminates contaminants from wastewater. It thus converts it into an effluent that can be returned to the water cycle. Once back in the water cycle, the effluent creates an acceptable impact on the environment.
This occurs because ice (solid water) is less dense than liquid water, as shown by the fact that ice floats on water. At a molecular level, ice is less dense because it has a more extensive network of hydrogen bonding which requires a greater separation of water molecules. [6] Other exceptions include antimony and bismuth. [8] [9]
In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve. One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist.
Sedimentation (water treatment) Settling basin; Sewer dosing unit; Sewer mining; Shock chlorination; Silt density index; Silt fence; Simultaneous nitrification–denitrification; Sink strainer; Slingshot (water vapor distillation system) Soap scum; Sodium hexametaphosphate; Solar desalination; Solar humidification; Solar still; Solar water ...
Water treatment (10 C, 151 P) Pages in category "Water technology" The following 51 pages are in this category, out of 51 total. This list may not reflect recent ...