News tagged with oxygen
Even while being dragged to its destruction inside a cell, a cancer-promoting growth factor receptor fires away, sending signals that thwart the development of tumor-suppressing microRNAs (miRNAs) before it's dissolved, researchers ...
Cancer May 23, 2013 | not rated yet | 0 |
You're standing near an airport luggage carousel and your bag emerges on the conveyor belt, prompting you to spring into action. How does your brain make the shift from passively waiting to taking action when ...
Neuroscience May 21, 2013 | 5 / 5 (2) | 0 |
(Medical Xpress)—Investigation by researchers from the University of Exeter and ETH Zurich has shed new light on a protein which is linked to a common neurological disorder called Charcot-Marie-Tooth disease.
Neuroscience May 16, 2013 | not rated yet | 0 |
(Medical Xpress)—Inflammation is an important response in the body - it helps you to kill off invaders such bacteria that could cause a harmful infection. But if it's chronic or uncontrolled, inflammation can also cause ...
Inflammatory disorders May 14, 2013 | 5 / 5 (1) | 0 |
Total anomalous pulmonary venous connection (TAPVC), one type of "blue baby" syndrome, is a potentially deadly congenital disorder that occurs when pulmonary veins don't connect normally to the left atrium of the heart. This ...
Medical research May 12, 2013 | 5 / 5 (1) | 0 |
(HealthDay)—The red in redheads' hair is thought to put them at increased risk of the dangerous skin cancer melanoma, even if they don't spend a lot of time in the sun, according to a new study.
Cancer May 09, 2013 | not rated yet | 2 |
(Medical Xpress)—Ever since its introduction in the 1990s, the "clot-busting" drug tPA has been considered a "double-edged sword" for people experiencing a stroke. It can help restore blood flow to the ...
Neuroscience May 07, 2013 | 5 / 5 (1) | 0 |
People have long taken for granted that glasses and contact lenses improve vision for nearsightedness, but the genetic factors behind the common condition have remained blurry. Now researchers at Duke Medicine ...
Genetics May 02, 2013 | 5 / 5 (2) | 2 |
(Medical Xpress)—Athletes no longer ask whether beetroot juice improves sporting performance - they just want to know how much to drink, and when.
Health May 16, 2013 | 5 / 5 (2) | 0
A small University at Buffalo study has found for the first time that in Type 1 diabetics, insulin injections exert a strong anti-inflammatory effect at the cellular and molecular level, while even small amounts of glucose ...
Diabetes May 16, 2013 | not rated yet | 0
Beep….beep……….beep……….beeeeeeeeeeeeeeeeeeeeeeeeep. "We're losing him. Out of my way, nurse!" The quick-thinking young doctor charges the defibrillator paddles and places them on the chest of ...
Cardiology May 14, 2013 | 5 / 5 (1) | 0
To keep your body functioning, glucose must always be present in your blood. It's as important as oxygen in the air you breathe. The brain can only function for a few minutes without either before it stops ...
Diabetes May 13, 2013 | 5 / 5 (1) | 0
(Medical Xpress)—Researchers from Christchurch have played a crucial role in an international study aimed at saving the lives of very premature babies.
Pediatrics May 13, 2013 | not rated yet | 0
In a randomized trial performed to help resolve the uncertainty about the optimal oxygen saturation therapy in extremely preterm infants, researchers found that targeting saturations of 85 percent to 89 percent compared with ...
Pediatrics May 05, 2013 | not rated yet | 0
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
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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