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2. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   Uses compressed oxygen. Uses an oxygen-generating solid. This involves a chemical reaction between potassium superoxide with exhaled water and carbon dioxide. A chlorate candle has to be struck to start the device. To reduce pressure buildup from use, a pressure-relief valve with saliva trap is included.

3. Oxygen breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Oxygen_Breathing_Apparatus

   [1] The scrubber canister uses potassium superoxide as both a carbon dioxide absorbent and as an oxygen source. A sodium chlorate oxygen candle in the base of the unit generates oxygen on start-up as the canister has to reach a high internal temperature before it will start generating oxygen. The circulation of exhaled air containing carbon ...

4. High altitude breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/High_altitude_breathing...

   High altitude breathing apparatus is a breathing apparatus which allows a person to breathe more effectively at an altitude where the partial pressure of oxygen in the ambient atmospheric air is insufficient for the task or to sustain consciousness or human life over the long or short term.

5. Hundreds of trucks full of aid sit idle near border with Gaza ...

   www.aol.com/news/hundreds-trucks-full-aid-sit...

   Oxygen canisters, water filters, metal forks, over-the-counter painkillers and generators were among the items that Nossair said had prevented trucks from entering Gaza, where a vast majority of ...

6. What are whippets? This potentially dangerous drug could be ...

   www.aol.com/whippets-potentially-dangerous-drug...

   Oxygen deprivation: Inhaling nitrous oxide displaces oxygen in the lungs, leading to hypoxia, or oxygen deprivation. This can cause fainting, brain damage, and, in extreme cases, death.

7. Self-contained self-rescue device - Wikipedia

   en.wikipedia.org/wiki/Self-contained_self-rescue...

   Test bench for a miner's closed circuit self-rescuers. A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a type of closed-circuit SCBA [1] with a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide.