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The oxygen fraction of the bottom gas suitable for a dive deeper than about 65 metres (213 ft) will not have sufficient oxygen to reliably support consciousness at the surface, so a travel gas must be carried to start the dive and get down to the depth at which the bottom gas is appropriate. There is generally a large overlap of depths where ...
The specific guidelines for prevention of asphyxiation due to displacement of oxygen by asphyxiant gases is covered under CGA's pamphlet SB-2, Oxygen-Deficient Atmospheres. [15] Specific guidelines for use of gases other than air in back-up respirators is covered in pamphlet SB-28, Safety of Instrument Air Systems Backed Up by Gases Other Than Air.
Iron Lung is a 2022 first-person submarine simulation horror game developed and published by David Szymanski. [1] The player controls an unnamed convict who explores an ocean of blood on a desolate moon in a small, rusty submarine nicknamed the "Iron Lung".
The names for archaeological periods vary enormously from region to region. This is a list of the main divisions by continent and region. Dating also varies considerably and those given are broad approximations across wide areas.
This is a list of notable video game companies that have made games for either computers (like PC or Mac), video game consoles, handheld or mobile devices, and includes companies that currently exist as well as now-defunct companies.
Also: spring or resurgence. Cave where water flows out of the entrance used for diving. The flow will generally help divers on the way out. sink See: sink A cave where water flows into the entrance used for diving, which can hinder divers from getting out. sump See: sump A locally low-lying water filled passage of a cave. A cave may have several sumps separated by unflooded or partially ...
Hydrox, a gas mixture of hydrogen and oxygen, is occasionally used as an experimental breathing gas in very deep diving. [ 1 ] [ 2 ] It allows divers to descend several hundred metres. [ 3 ] [ 4 ] [ 5 ] Hydrox has been used experimentally in surface supplied, saturation, and scuba diving, both on open circuit and with closed circuit rebreathers.
The air in the cave is very different from the outer atmosphere. The level of oxygen is only a third to half of the concentration found in open air (7–10% O 2 in the cave atmosphere, compared to 21% O 2 in air), and about one hundred times more carbon dioxide (2–3.5% CO 2 in the cave atmosphere, versus 0.04% CO 2 in air).