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2. Oxygen - Wikipedia

   en.wikipedia.org/wiki/Oxygen

   Oxygen tents were once commonly used in oxygen supplementation, but have since been replaced mostly by the use of oxygen masks or nasal cannulas. [105] Hyperbaric (high-pressure) medicine uses special oxygen chambers to increase the partial pressure of O 2 around the patient and, when needed, the medical staff. [106]

3. Breathing gas - Wikipedia

   en.wikipedia.org/wiki/Breathing_gas

   A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas. Other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats such as scuba equipment, surface supplied diving equipment, recompression chambers, high-altitude mountaineering, high-flying aircraft, submarines ...

4. Oxygen compounds - Wikipedia

   en.wikipedia.org/wiki/Oxygen_compounds

   Quartz is a common crystalline mineral made of silica, or silicon dioxide (SiO 2). The rest of the Earth's crust is formed also of oxygen compounds, most importantly calcium carbonate (in limestone) and silicates (in feldspars).

5. Oxygen therapy - Wikipedia

   en.wikipedia.org/wiki/Oxygen_therapy

   The medical use of oxygen first became common around 1917, and is the most common hospital treatment in the developed world. [1] [9] [10] [11] It is currently on the World Health Organization's List of Essential Medicines. [11] Home oxygen can be provided either by oxygen tanks or oxygen concentrator. [1]

6. Oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Oxygen_concentrator

   Two methods in common use are pressure swing adsorption and membrane gas separation. Pressure swing adsorption (PSA) oxygen concentrators use a molecular sieve to adsorb gases and operate on the principle of rapid pressure swing adsorption of atmospheric nitrogen onto zeolite minerals at high pressure. This type of adsorption system is ...

7. 15 Unusual Uses for Common Household Items

   www.aol.com/food-15-unusual-uses-common...

   There are so many household items that can work overtime in your house, and you may not even realize it. Toothpaste and lemon? They can help you clean. Old coffee grounds? They can help to remove ...