presence of gas

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• Gas porosity — Determining the true porosity of a gas filled formation has always been a problem. While gas is a hydrocarbon, similar to oil, the physical properties of the fluids are very different, making it very hard to correctly quantify the total amount of …   Wikipedia

• Gas blending — or gas mixing is the filling of diving cylinders with non air breathing gases such as nitrox, trimix and heliox. Hazards There are several hazards with gas mixing: * cylinders are being filled with high pressure gas. If there is any damage or… …   Wikipedia

• Gas Works Park — in Seattle, Washington is a 19.1 acre (77,000 m²) public park on the site of the former Seattle Gas Light Company gasification plant, located on the north shore of Lake Union at the south end of the Wallingford neighborhood. Gas Works park… …   Wikipedia

• Gas chromatography-mass spectrometry — (GC MS) is a method that combines the features of gas liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC MS include drug detection, fire investigation, environmental analysis,… …   Wikipedia

• Gas gangrene — Classification and external resources Photograph before right leg amputation (hemipelvectomy) of a patient with gas gangrene. The right thigh is swollen, edematous and discoloured with necrotic bullae (large blisters). An impressive crepitation… …   Wikipedia

• Gas-filled tube — See also: Gas discharge lamp A gas filled tube, also known as a discharge tube, is an arrangement of electrodes in a gas within an insulating, temperature resistant envelope. Although the envelope is typically glass, power tubes often use… …   Wikipedia

• Gas-pak — This is a method used in production of an anaerobic environment. This method of anaerorbiosis as others is used to culture bacteria which die or fail to grow in presence of oxygen ( anaerobes ). It is a much simpler technique than the McIntosh… …   Wikipedia

• Gas turbine — Microturbine redirects here. For turbines in electricity, see Small wind turbine. For turbines driven by the flow of gas, see Turbine. A typical axial flow gas turbine turbojet, the J85, sectioned for display. Flow is left to right, multistage… …   Wikipedia

• Gas — This article is about the physical properties of gas as a state of matter. For the uses of gases, and other meanings, see Gas (disambiguation). Ga …   Wikipedia

• gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… …   Universalium

• Gas explosion — A Gas explosion is the result of a gas leak in the presence of an ignition source. The principal explosive gases are natural gas, methane, propane and butane, because they are widely used for heating purposes. However, many other gases like… …   Wikipedia