technical gases

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• Technical diving — Technical diver during a decompression stop. Technical diving (sometimes referred to as Tec diving) is a form of scuba diving that exceeds the scope of recreational diving (although the vast majority of technical divers dive for recreation and… …   Wikipedia

• Technical Diving International — Articleissues onesource = March 2008 primarysources = March 2008Infobox Organization name = Technical Diving International image border = size = caption = msize = mcaption = abbreviation = TDI motto = formation = extinction = type = status =… …   Wikipedia

• Oxygen window in technical diving — Contents 1 Background 2 Application 3 References 4 A …   Wikipedia

• DEME — Dredging, Environmental and Marine Engineering NV Type Limited company Founded 1991 Headquarters Zwijndrecht, Belgium Area served Worldwide Key people Luc Bertrand ( …   Wikipedia

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• Decompression (diving) — Divers decompressing in the water at the end of a dive Decompression in the context of diving derives from the reduction in ambient pressure experienced by the diver during the ascent at the end of a dive or hyperbaric exposure and refers to both …   Wikipedia

• Nitrox — Typical Nitrox cylinder marking Nitrox refers to any gas mixture composed (excluding trace gases) of nitrogen and oxygen; this includes normal air which is approximately 78% nitrogen, 21% oxygen, and 1% other gases, primarily argon.[1][2] …   Wikipedia

• Breathing gas — is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas. Other artificial gases, either pure gases or mixtures of gases, are used in breathing equipment and enclosed… …   Wikipedia

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• Diving cylinder — Diving cylinders to be filled at a diving air compressor station …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium