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Oxygen print that page


element that readily forms compounds (notably oxides ) with almost all other elements. By mass, oxygen is the third most abundant element in the universe after hydrogen and helium [ 1 ] and the most abundant element by mass in the Earth's crust , making up almost half of the crust's mass

Oxygen sensor print that page


An oxygen sensor , or lambda sensor , is an electronic device that measures the proportion of oxygen (O 2 ) in the gas or liquid being analyzed. It was developed by the Robert Bosch GmbH company during the late 1960s under the supervision of Dr. Günter Bauman. The original sensing element

Liquid oxygen print that page

Liquid oxygen has a pale blue color and is strongly paramagnetic and can be suspended between the poles of a powerful horseshoe magnet. [ 1 ] Liquid oxygen has a density of 1.141 g/cm 3 (1.141 kg/L) and is cryogenic with a freezing point of 50.5 K (−368.77  °F; −222.65 °C) and | 2011/7/23 22:44:50

Oxygen therapy print that page


Room air only contains 21% oxygen , and increasing the fraction of oxygen in the breathing gas increases the amount of oxygen in the blood. It is often only required to raise the fraction of oxygen delivered to 30–35% and this is done by use of a nasal cannula . When 100% oxygen is needed

Singlet oxygen print that page

Singlet oxygen is usually generated with a photosensitizer pigment. The damaging effects of sunlight on many organic materials (polymers, etc.) are often attributed to the effects of singlet oxygen . In photodynamic therapy , singlet oxygen is produced to kill cancer cells. Contents | 2011/9/5 14:34:34

Oxygen plant print that page


Oxygen finds broad application in various technological processes and in almost all industry branches. The primary oxygen application is associated with its capability of sustaining burning process, and the powerful oxidant properties. Due to that, oxygen has become widely used in the metal

Chemical oxygen demand print that page

In environmental chemistry , the chemical oxygen demand ( COD ) test is commonly used to indirectly measure the amount of organic compounds in water . Most applications of COD determine the amount of organic pollutants found in surface water (e.g. lakes and rivers ), making COD a useful | 2011/8/4 2:45:28

Biochemical oxygen demand print that page

use some of these compounds as food . Microorganisms living in oxygenated waters use dissolved oxygen to convert the organic compounds into energy for growth and reproduction . Populations of these microorganisms tend to increase in proportion to the amount of food available. This microbial | 2011/8/27 5:52:36

Oxygen bar print that page


An oxygen bar is an establishment, or part of one, that sells oxygen for recreational use. Individual flavored scents may be added to enhance the experience. The flavors in an oxygen bar come from bubbling oxygen through bottles containing aromatic solutions before it reaches the nostrils

Oxygen concentrator print that page


An oxygen concentrator is a device providing oxygen therapy to a patient at minimally to substantially higher concentrations than available in ambient air. They are used as a safer, less expensive, and more convenient alternative to tanks of compressed oxygen . Common models retail at