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The Locanto Classifieds sites are operated by the German startup company Yalwa located in Wiesbaden, Germany. Locanto was launched in July 2006 with a local classifieds site for New York City . One month later, on August 21, 2006, the service was extended to the U.S. cities of Boston , Chicago , Los Angeles and San Francisco .
Portable oxygen concentrator used with bottle humidifier. POCs operate on the same principle as a home concentrator, pressure swing adsorption. [6] The basic set up of a POC is a miniaturized air compressor, a cylinder filled containing the sieve, a pressure equalizing reservoir and valves and tubes.
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.
In 2019, Avito was the second-biggest classifieds site in the world after Craigslist. [31] In April 2019, online classifieds marketplace Jiji.ng acquired OLX businesses in Kenya, Ghana, Uganda, Tanzania and Nigeria. [32] In India, about 99% of its listings come from used mobile and electronics, used home and household goods, and used cars ...
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 ]
Oxygen therapy, also referred to as supplemental oxygen, is the use of oxygen as medical treatment. [1] Supplemental oxygen can also refer to the use of oxygen enriched air at altitude. Acute indications for therapy include hypoxemia (low blood oxygen levels), carbon monoxide toxicity and cluster headache .
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