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...respired volume of breathing gas in the circuit is discharged during each breathing cycle by a concentric bellows counterlung system, which reduces the loop vo ...e since the 1990s by the [[Woodville Karst Plain Project]] for mapping the underwater caves of the [[Woodville Karst Plain]]. By 2021, more than {{convert|185,00 ...

* Full [[SCBA]] (self-contained breathing apparatus) for [[IDLH]] (non-fire) atmospheres: 2,216 psig * Full [[Scuba set|SCUBA]] (self-contained underwater breathing apparatus) tank overpressure (common): 3,000 psig ...

...le:Interspiro DCSC loop schematic.png|thumb|400px|Schematic diagram of the breathing loop of the Interspiro DCSC seni-closed circuit rebreather<br /> ...erly a division of AGA and has been manufacturing self-contained breathing apparatus for diving, firefighting and rescue applications since the 1950s. ...

{{short description|Influences of the underwater environment on the physiology of human divers}} ...s of the underwater environment on air-breathing vertebrates|Physiology of underwater diving}} ...

...escription| Underwater diving using self contained breathing gas recycling apparatus }} ...as advantages over open circuit [[Scuba set|scuba]], and surface supply of breathing gas is impracticable. The main advantages of rebreather diving are extended ...

{{Short description|Risk management of underwater diving activities}} ...er, and is mostly beyond the diver's control. Equipment is used to operate underwater for anything beyond very short periods, and the reliable function of some o ...

...'', developed the [[Buteyko method]] for the treatment of asthma and other breathing disorders *'''[[Gavriil Ilizarov]]''', invented [[Ilizarov apparatus]], developed [[distraction osteogenesis]] ...

...ntonio Meucci.jpg|thumb|[[Antonio Meucci]] developed a voice-communication apparatus that several sources credit as the first telephone.<ref name="Meucci"/>]] * [[Antonio Meucci]] developed a voice-communication apparatus that several sources credit as the first telephone.<ref name="Meucci">Wheen ...