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A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving.The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are also other types of gas pressure regulator used for diving applications.
Argon constitutes 0.934% by volume and 1.288% by mass of Earth's atmosphere. [23] Air is the primary industrial source of purified argon products. Argon is isolated from air by fractionation, most commonly by cryogenic fractional distillation , a process that also produces purified nitrogen , oxygen , neon , krypton and xenon . [ 24 ]
Argon is far more narcotic (about 2.3 times more) than the cheaper and more readily available nitrogen at depth, so it loses out to nitrogen in all roles as a primary breathing gas. If the maximum operating depth for air owing to narcosis is taken to be 40 metres (130 ft), then for 20% argox (20% O 2 , 80% Ar) it would be 14.5 metres (48 ft).
Philippines: Energy Regulatory Commission (ERC) is an independent, quasi-judicial regulatory body established to regulate electric power service in the Philippines. Singapore : Energy Market Authority (EMA) is a statutory board operating under the Ministry of Trade and Industry of Singapore established for energy sector market regulation ...
On June 1, 2011, VWR International acquired BioExpress Corp (formerly ISC BioExpress), raising concerns of monopolization of the laboratory supplies sector along with Thermo Fisher Scientific. [ 11 ] Controversy has arisen about a 2010 decision by VWR to close its unionized Brisbane, CA distribution center, moving operations to a non-unionized ...
Regulators can be designed to control anything from gases or fluids, to light or electricity. Speed can be regulated by electronic, mechanical, or electro-mechanical means. Such instances include; Electronic regulators as used in modern railway sets where the voltage is raised or lowered to control the speed of the engine
While not a gas, it is possible to synthesize an ultralight aerogel with a density less than air, the lightest recorded so far reaching a density approximately 1/6th that of air. [13] Aerogels don't float in ambient conditions, however, because air fills the pores of an aerogel's microstructure, so the apparent density of the aerogel is the sum ...
Refining of a 9.5%CrMoWVNbN steel in an argon, oxygen decarburisation (AOD) vessel. Argonoxygen decarburization (AOD) is a process primarily used in stainless steel making and other high grade alloys with oxidizable elements such as chromium and aluminium.
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