relief gases
41Rebreather — A fully closed circuit electronic rebreather (Ambient Pressure Diving Inspiration) Acronym CCUBA (Closed Circuit Underwater Breathing Apparatus); CCR (Closed circuit rebreather), SCR (Semi closed rebreather) Uses Breathing set …
42Orifice plate — Flat plate, sharp edge orifice ISO 5167 Orifice Plate An orifice plate is a device used for measuring the volumetric flow rate. It …
43Geology of Venus — Radar image of the surface of Venus, centered at 180 degrees east longitude Venus is a planet with striking surface characteristics. Most of what is known about its surface stems from radar observations, mainly images sent by the Magellan probe… …
44Gas flare — which results from the decomposition of materials in the dump.Recently, under the Kyoto Treaty, some developing countries garbage collecting companies have received carbon bonus for installing burning chimneys for the methane gas produced at… …
45Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
462009 Chinese drywall controversy — The 2009 Chinese drywall controversy is a health and safety issue involving defective drywall manufactured in China and imported by the United States starting in 2001. Laboratory tests of samples for volatile chemicals have identified emissions… …
47Compilation of atmospheric dispersion models — Atmospheric dispersion models are computer programs that use mathematical algorithms to simulate how pollutants in the ambient atmosphere disperse and, in some cases, how they react in the atmosphere. The dispersion models are used to estimate or …
48Massachusetts v. Environmental Protection Agency — Supreme Court of the United States Argued November 29, 200 …
49Cameroon — Cameroonian, adj., n. /kam euh roohn /, n. 1. Also, Cameroun. Official name, United Republic of Cameroon. an independent republic in W Africa: formed 1960 by the French trusteeship of Cameroun; Southern Cameroons incorporated as a self governing… …
50decompression sickness — Pathol. aeroembolism (def. 2). [1940 45] * * * also called the bends or caisson disease Harmful effects of rapid change from a higher to a lower pressure environment. Small amounts of the gases in air are dissolved in body tissues. When pilots of …
