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2. Portable oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Portable_oxygen_concentrator

   A portable oxygen concentrator (POC) is a device used to provide oxygen therapy to people that require greater oxygen concentrations than the levels of ambient air. It is similar to a home oxygen concentrator (OC), but is smaller in size and more mobile. They are small enough to carry and many are now FAA -approved for use on airplanes.

3. Oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Oxygen_concentrator

   Oxygen concentrator. 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 used industrially, to provide supplemental oxygen at high altitudes, and as medical devices for oxygen therapy.

4. Nasal cannula - Wikipedia

   en.wikipedia.org/wiki/Nasal_cannula

   MeSH. D012121. OPS-301 code. 8-71. [ edit on Wikidata] The nasal cannula (NC) is a device used to deliver supplemental oxygen or increased airflow to a patient or person in need of respiratory help. This device consists of a lightweight tube which on one end splits into two prongs which are placed in the nostrils curving toward the sinuses ...

5. Blast from the Past: NASA's Stirling-powered AMC Spirit

   www.autoblog.com/2009/07/08/blast-from-the-past...

   Over the last few months, Segway-inventor Dean Kamen has made headlines for installing a Stirling engine in an older EV from Th!nk to create an extended-range electric vehicle. Interestingly, this ...

6. A black market for oxygen concentrators is preying on ... - AOL

   www.aol.com/news/black-market-oxygen...

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7. 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. High altitude breathing sets may be classified by type ...