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A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]
O2+ may refer to: Dioxygenyl (O + 2) Doubly ionized oxygen (O 2+ This page was last edited on 27 November 2021, at 11:27 (UTC). Text is available under the ...
In 1927, Ira Sprague Bowen published the current explanation identifying their source as doubly ionized oxygen. [1] Other transitions include the forbidden 88.4 μm and 51.8 μm transitions in the far infrared region. [2] Permitted lines of O III lie in the middle ultraviolet band and are hence inaccessible to terrestrial astronomy.
Arterial blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed. Continued low oxygen levels may lead to respiratory or cardiac arrest. Oxygen therapy may be used to assist in raising blood oxygen levels. Oxygenation occurs when oxygen molecules (O 2) enter the tissues ...
Oxygen compatibility is the issue of compatibility of materials for service in high concentrations of oxygen. It is a critical issue in space, aircraft, medical ...
Solid oxygen forms at normal atmospheric pressure at a temperature below 54.36 K (−218.79 °C, −361.82 °F). Solid oxygen O 2 , like liquid oxygen , is a clear substance with a light sky-blue color caused by absorption in the red part of the visible light spectrum.
Oxygen forms heteropoly acids and polyoxometalate ions with tungsten, molybdenum and some other transition metals, such as phosphotungstic acid (H 3 PW 12 O 40) and octadecamolybdophosphoric acid (H 6 P 2 Mo 18 O 62). Oxygen can form oxides with heavier noble gases xenon and radon, although this needs indirect methods.
Electro-galvanic fuel cell as used in a diving rebreather to measure the partial pressure of oxygen. Two oxygen cells as used by oxygen analysers for diving gas showing commonly used connectors. An electro-galvanic fuel cell is an electrochemical device which consumes a fuel to produce an electrical output by a chemical reaction.