Oxygen toxicity — Classification and external resources In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7 … Wikipedia
Oxygen tank — An oxygen tank is a storage vessel for oxygen, which is either held under pressure in gas cylinders or as liquid oxygen in a cryogenic storage tank. Oxygen tanks are used to store gas for: industrial processes including the manufacture of steel… … Wikipedia
Ozone-oxygen cycle — in the ozone layer. The ozone oxygen cycle is the process by which ozone is continually regenerated in Earth s stratosphere, all the while converting ultraviolet radiation into heat. In 1930 Sydney Chapman resolved the chemistry involved. The… … Wikipedia
Hair removal — For hair loss, see Alopecia. Not to be confused with Unhairing. Sample distribution of body hair in women and men … Wikipedia
Chemical oxygen iodine laser — Chemical oxygen iodine laser, or COIL, is an infrared chemical laser. As the beam is infrared, it cannot be seen with the naked eye. It is capable of output power scaling up to megawatts in continuous mode[citation needed]. Its output wavelength… … Wikipedia
Enhanced biological phosphorus removal — (EBPR) is a wastewater treatment configuration applied to activated sludge systems for the removal of phosphate. The common element in EBPR implementations is the presence of an anaerobic tank (nitrate and oxygen are absent) prior to the aeration … Wikipedia
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
Fire extinguisher — Extinguisher redirects here. Extinguisher may also refer to a candle snuffer. A stored pressure fire extinguisher … Wikipedia
Deoxidizer — A deoxidizer is a chemical used in a reaction or process to remove oxygen. In comparison with antioxidants, deoxidizers are not used for stabilization during storage but for oxygen removal during manufacture. Deoxidizers are mainly used in… … Wikipedia
Carbon tetrachloride — IUPAC name … Wikipedia
