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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. Breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Breathing_apparatus

    An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are also used industrially and as medical devices for oxygen therapy. [58] Two methods in common use are pressure swing adsorption and membrane gas ...

  4. High altitude breathing apparatus - Wikipedia

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

    An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are also used industrially and as medical devices for oxygen therapy. [15] Two methods in common use are pressure swing adsorption and membrane gas ...

  5. Anaesthetic machine - Wikipedia

    en.wikipedia.org/wiki/Anaesthetic_machine

    Based on experience gained from analysis of mishaps, the modern anaesthetic machine incorporates several safety devices, including: an oxygen failure alarm (a.k.a. 'Oxygen Failure Warning Device' or OFWD). In older machines this was a pneumatic device called a Ritchie whistle which sounds when oxygen pressure is 38 psi descending.

  6. Oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Oxygen_concentrator

    An oxygen concentrator takes in air and removes nitrogen from it, leaving an oxygen-enriched gas for use by people requiring medical oxygen due to low oxygen levels in their blood. [4] Oxygen concentrators provide an economical source of oxygen in industrial processes, where they are also known as oxygen gas generators or oxygen generation plants.

  7. Washington mayor optimistic she and Trump can work together ...

    www.aol.com/news/washington-mayor-optimistic-she...

    Washington Mayor Muriel Bowser said she had a great meeting with President-elect Donald Trump at his Florida resort and voiced optimism that they would find common ground despite their past clashes.

  8. Hypoxic air technology for fire prevention - Wikipedia

    en.wikipedia.org/wiki/Hypoxic_air_technology_for...

    Control and Monitoring System: This system controls the process of oxygen reduction and ensures that the atmosphere stays within safe, predefined parameters. It monitors oxygen levels, temperature, and other environmental factors. It also triggers alarms if the system deviates from the required conditions. Atmospheric Monitoring Sensors:

  9. The 15 best subscription gifts of 2024, no shipping required

    www.aol.com/lifestyle/best-subscription-gifts...

    Book of the Month is a popular subscription box that allows your giftee to choose a book from five to seven new releases each month. The service is beloved by bookworms, and there are a few ...

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