News tagged with oxygen
Nearly 12,000 people will die of head and neck cancer in the United States this year and worldwide cases will exceed half a million.
Cancer Jan 27, 2012 | 4.8 / 5 (55) | 18 |
Researchers from Murdoch University's School of Health Professions are urging health organisations to reconsider their attitudes to mothers and babies bedsharing.
Health Apr 29, 2013 | 4.1 / 5 (34) | 0
In an experiment on rats, European researchers have proved that eating strawberries reduces the harm that alcohol can cause to the stomach mucous membrane. Published in the open access journal Plos One, the st ...
Other Oct 25, 2011 | 4.4 / 5 (21) | 2
(Medical Xpress) -- Malaria is a disease caused by parasites passed to humans via the bites of infected mosquitoes. Globally, the disease causes over a million deaths every year, and is especially rife in ...
Medical research Nov 11, 2011 | 4.8 / 5 (16) | 2 |
It's rubbed on the skin to reduce signs of aging and consumed by athletes to improve endurance but scientists now have the first evidence of one of vitamin E's normal body functions.
Medical research Dec 20, 2011 | 4.8 / 5 (16) | 4 |
Whether you are an athlete, a musician or a stroke patient learning to walk again, practice can make perfect, but more practice may make you more efficient, according to a surprising new University of Colorado Boulder study.
Neuroscience Feb 09, 2012 | 4.4 / 5 (15) | 8 |
Injecting life-saving oxygen into a vein: Microparticles could deliver oxygen when breathing is impaired
Patients unable to breathe because of acute lung failure or an obstructed airway need another way to get oxygen to their bloodand fastto avoid cardiac arrest and brain injury. A team led by researchers at Boston ...
Medical research Jun 27, 2012 | 4.9 / 5 (11) | 3 |
Researchers at Newcastle University have revealed the mechanism by which neurons, the nerve cells in the brain and other parts of the body, age. The research, published today in Aging Cell, opens up new avenues of understanding ...
Neuroscience Sep 12, 2012 | 4.9 / 5 (9) | 0 |
Scientists at the Diabetes Research Institute have developed a revolutionary technique to provide critical oxygen for maintaining the survival of insulin-producing cells. This is the first time that scientists have been able ...
Medical research Mar 01, 2012 | 5 / 5 (6) | 0 |
(Medical Xpress)—Scientists at Karolinska Institutet in Sweden have presented a new principle for fighting bacterial infections, in other words, a new type of antibiotic, in the FASEB Journal. The new antibiotic mechan ...
Medical research Dec 18, 2012 | 5 / 5 (6) | 0 |
As part of their ongoing research on the physiologic factors that contribute to the development of obesity, Joslin Diabetes Center scientists have identified a cell cycle transcriptional co-regulator – ...
Medical research Jan 06, 2013 | 4.8 / 5 (6) | 0 |
Researchers have identified a potential drug therapy for a premature ageing disease that affects children causing them to age up to eight times as fast as the usual rate.
Genetics Nov 02, 2011 | 4.3 / 5 (6) | 0 |
Humans perceive numerous categories of objects and actions, but where are these categories represented spatially in the brain?
Neuroscience Dec 19, 2012 | 4.3 / 5 (6) | 0 |
(Medical Xpress)—It seems as if a tumor deprived of oxygen would shrink. However, numerous studies have shown that tumor hypoxia, in which portions of the tumor have significantly low oxygen concentrations, ...
Cancer Sep 13, 2012 | 5 / 5 (5) | 1 |
Scientists at the University of Liverpool have identified high levels of a number of genes in the naked mole-rat that may suggest why they live longer than other rodents and demonstrate resistance to age-related diseases.
Cancer Nov 03, 2011 | 5 / 5 (4) | 1 |
Oxygen (pronounced /ˈɒksɨdʒɨn/, from the Greek roots ὀξύς (oxys) (acid, literally "sharp", from the taste of acids) and -γενής (-genēs) (producer, literally begetter) is the element with atomic number 8 and represented by the symbol O. It is a member of the chalcogen group on the periodic table, and is a highly reactive nonmetallic period 2 element that readily forms compounds (notably oxides) with almost all other elements. At standard temperature and pressure two atoms of the element bind to form dioxygen, a colorless, odorless, tasteless diatomic gas with the formula O2. Oxygen is the third most abundant element in the universe by mass after hydrogen and helium and the most abundant element by mass in the Earth's crust. Diatomic oxygen gas constitutes 20.9% of the volume of air.
All major classes of structural molecules in living organisms, such as proteins, carbohydrates, and fats, contain oxygen, as do the major inorganic compounds that comprise animal shells, teeth, and bone. Oxygen in the form of O2 is produced from water by cyanobacteria, algae and plants during photosynthesis and is used in cellular respiration for all complex life. Oxygen is toxic to obligately anaerobic organisms, which were the dominant form of early life on Earth until O2 began to accumulate in the atmosphere 2.5 billion years ago. Another form (allotrope) of oxygen, ozone (O3), helps protect the biosphere from ultraviolet radiation with the high-altitude ozone layer, but is a pollutant near the surface where it is a by-product of smog. At even higher low earth orbit altitudes monatomic oxygen (O1) is a significant presence and a cause of erosion for spacecraft.
Oxygen was independently discovered by Carl Wilhelm Scheele, in Uppsala, in 1773 or earlier, and Joseph Priestley in Wiltshire, in 1774, but Priestley is often given priority because his publication came out in print first. The name oxygen was coined in 1777 by Antoine Lavoisier, whose experiments with oxygen helped to discredit the then-popular phlogiston theory of combustion and corrosion. Oxygen is produced industrially by fractional distillation of liquefied air, use of zeolites to remove carbon dioxide and nitrogen from air, electrolysis of water and other means. Uses of oxygen include the production of steel, plastics and textiles; rocket propellant; oxygen therapy; and life support in aircraft, submarines, spaceflight and diving.
For more information about Oxygen, read the full article at
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