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2. Rebreather diving - Wikipedia

   en.wikipedia.org/wiki/Rebreather_diving

   Cardiac events, hypoxia, and hyperoxia are the main causes of death where it is known with any confidence, and fatality rates have been estimated at 1.8 to 3.8 deaths per 100,000 dives or 1.2 to 2.5 deaths per 100,000 diving hours on rebreathers. [41] The data are limited, and assumed to be underreported, particularly from Asia. [41]

3. Scuba gas management - Wikipedia

   en.wikipedia.org/wiki/Scuba_gas_management

   Rebreather diver with bailout and decompression cylinders. Scuba gas management is the aspect of scuba diving which includes the gas planning, blending, filling, analysing, marking, storage, and transportation of gas cylinders for a dive, the monitoring and switching of breathing gases during a dive, efficient and correct use of the gas, and the provision of emergency gas to another member of ...

4. Trimix (breathing gas) - Wikipedia

   en.wikipedia.org/wiki/Trimix_(breathing_gas)

   Trimix (breathing gas) Trimix is a breathing gas consisting of oxygen, helium and nitrogen and is used in deep commercial diving, during the deep phase of dives carried out using technical diving techniques, [1][2] and in advanced recreational diving. [3][4] The helium is included as a substitute for some of the nitrogen, to reduce the narcotic ...

5. Technical diving - Wikipedia

   en.wikipedia.org/wiki/Technical_diving

   Technical diver during a decompression stop. There is some professional disagreement as to what exactly technical diving encompasses. [9] [10] [11] Nitrox diving and rebreather diving were originally considered technical, but this is no longer universally the case as several certification agencies now offer Recreational Nitrox and recreational rebreather training and certification.

6. International Association of Nitrox and Technical Divers

   en.wikipedia.org/wiki/International_Association...

   The International Association of Nitrox and Technical Divers (IANTD) is a scuba diving organization concerned with certification and training in recreational diving, technical diving, cave diving, wreck diving, rebreather diving and diver leadership. Originally formed as the International Association of Nitrox Divers in 1985 by Dick Rutkowski ...

7. Nitrox - Wikipedia

   en.wikipedia.org/wiki/Nitrox

   In 1874, Henry Fleuss made what was possibly the first Nitrox dive using a rebreather. [6] In 1911, Draeger of Germany tested an injector operated rebreather backpack for a standard diving suit. This concept was produced and marketed as the DM20 oxygen rebreather system and the DM40 nitrox rebreather system, in which air from one cylinder and ...

8. Haldane's decompression model - Wikipedia

   en.wikipedia.org/wiki/Haldane's_decompression_model

   Haldane's Decompression Tables I and II. Haldane's decompression model is a mathematical model for decompression to sea level atmospheric pressure of divers breathing compressed air at ambient pressure that was proposed in 1908 by the Scottish physiologist, John Scott Haldane (2 May 1860 – 14/15 March 1936), [1] who was also famous for ...

9. Rebreather - Wikipedia

   en.wikipedia.org/wiki/Rebreather

   A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing ...