GAS GANGRENE, anaerobic wound fever. It is defined by a general heavy condition, a dropsy of staggered tissues, occurrence in them it is bubble gas, a necrosis of tissues.

FLUID DYNAMICS, the section of aerodynamics investigator motion of compressible gases, power and their heat interaction with a surface of ph streamlined by them. The fluid dynamics actuates the theory of flows of a compressible gas, the theory of shockwaves, the theory of flows of the dissociated and ionized gas, the theory of heat exchange (convective and radiative).

GAS CONSTANT, the physical constant which is appearing in the equation conditions 1 asking of ideal gas; it is meant R, it is peer 8,314 Dzh / (K·mol) = 1,987 faecal matter / (K·mol).

GAS CUTTING, the same, that an oxygen cutting.

FLAME WELDING, way of a weldment of a metal goods with the help of the gas flame derivated at combustion of a mix of a combustible gas (acetylene, hydrogen, steams of petrol, etc.) with oxygen. Apply to a weldment of article thin-walled articles from steel, non-ferrous metals and alloys, for a building-up welding of hard-facing alloys at repairing work.

GAS-DISTRIBUTING SYSTEM, pipe manifold (gas-pipes), the employee for transportation of combustible gases and their distributions between consumers.

GAS FILMING, 1) definition of intensity of outgassing in mining outputs of shaft selection and an analysis of samples of a mine air. 2) the Geochemical method of searches of deposits, is based on study of structure and definition of the content of the gases migrating up to a surface of the Earth.

COMBUSTION TURBINE, the turbine in which the thermal energy of compressed and heated gas (it is routine a combustion materials of fuel) will be transformed to mechanic activity; is part of a gas-turbine engine.

GAS FIRING, kind of heating, at which fuel the combustible gases which are incinerated in heating appliances (radiators, mantelpieces, etc.), content in rooms minister.

GAS STOREHOUSE, natural or synthetic (napr., a gas holder) a retention reservoir of gas. Container of natural gas storehouse (in cavities of rocks) abroad - Hersher (USA) ok. 5 billion in m3, Sent-Ilya (France) ok. 1 billion in m3.

LIQUEFIED GAS TANKER, vessel for transportation of liquified gases (propyl hydride, butane, etc.). Gaza are transported in lagged tanks or under pressure, or cooled up to a boiling temperature at an atmospheric pressure, or at small joint squeeze and refrigerating. Load-carrying capacity up to 130 thousand in m3.

GAS NEBULOSITY, see. Nebulosity galactic.

GAS ANALYSIS, the analysis of mixes of gases for establishment of their quality and quantitative structure. For a gas analysis the chromatography, methods spectral, mass spectrometric analysis are used, etc.

GAS ENGINE, the internal-combustion engine working on a gas fuel (natural, generating, blast, etc. gases, and also liquified gas). Distinguish gas engines with a spark ignition and gazodizeli.

MUD LOGGING, method of detection of petroleum and gas deposits definition of gaseous and light fluid hydrocarbon in a drilling fluid, less often in a center mark. Mud logging is used also for study of a gas presence of coal layers.

GAS CONDENSATION MOISTURE (gas condensate), mix of fluid hydrocarbon (Ñ5Í12 + the maximum), secreted from natural gases at operation of gas condensate deposits as a result of drop of formation pressures (below pressures started condensation) and temperature. The gas condensation moisture is used engine fuel, is valuable raw material for a chemical industry.

The GASEOUS OPTICAL MASER, the laser in which an active mediuim are gases, pairs or their mixes (ÑÎ2, Ar, mix Íå+Ne, etc.). Use as a datum mark of frequency (see. Optical standards of frequency), in laser spectroscopy, a holography, laser technology, in medicine, etc.

GAS CRAFT, the technological complex intended for production and gas collection from the area of a deposit, and also machining of gas and condensation moisture with the purpose of their preparation to the further transportation. Actuates operational, the observation and prospecting holes, gazosbornye collectors, gas gathering places, compressor stations, and also objects energohozjajstva, water supply, etc.

LIGHTNING DISCHARGE, the same, that electric discharge in gases.

GAS MODE, system of preservative measures on shafts, dangerous because of methane emission or hydrogen in a mining output; in an event of danger and on a dust it is introduced pylegazovyj a mode.