News tagged with oxides
(Medical Xpress) -- Nearly 20 years ago, the journal Science tagged nitric oxide as the "molecule of the year." Since that time, researchers have tried to study and target this simple molecule that is involved in virtually every ...
Medical research Nov 13, 2011 | 5 / 5 (3) | 2 |
(HealthDay)—Moderate aerobic exercise prevents fructose-induced hypertriglyceridemia in healthy males, according to a study published online May 14 in Diabetes.
Diabetes May 17, 2013 | 5 / 5 (1) | 0 |
Breast milk ingredient could prevent necrotizing enterocolitis—deadly intestinal problem in preemies
An ingredient that naturally occurs in breast milk might be used to prevent premature babies from developing a deadly intestinal condition that currently is largely incurable, according to researchers at the University of ...
Diseases, Conditions, Syndromes May 06, 2013 | not rated yet | 2 |
Hair dye manufacturers are on notice: The cure for gray hair is coming. That's right, the need to cover up one of the classic signs of aging with chemical pigments will be a thing of the past thanks to a team of European ...
Medical research May 03, 2013 | 4.7 / 5 (34) | 14 |
(Medical Xpress)—Breathing traffic pollution in early pregnancy is linked to a higher risk for certain serious birth defects, according to new research from the Stanford University School of Medicine.
Health Mar 29, 2013 | not rated yet | 0 |
Like any factory, the body burns oxygen to get energy for its various needs. As a result, detrimental byproducts are released and our cells try to clean up shop with antioxidants. But as we age, this process ...
Medical research Mar 04, 2013 | 4.3 / 5 (3) | 0 |
Nitric oxide, the versatile gas that helps increase blood flow, transmit nerve signals, and regulate immune function, appears to perform one more biological feat— prolonging the life of an organism and ...
Medical research Feb 14, 2013 | 5 / 5 (1) | 0 |
In a new paper he regards "among my most important work since the double helix," Nobelist James Watson sets forth a novel hypothesis regarding the role of oxidants and antioxidants in cancers that are currently incurable, ...
Cancer Jan 08, 2013 | 5 / 5 (4) | 0 |
(HealthDay)—Very low testosterone levels impact total lipid oxidation but have no effect on the production of very-low-density lipoprotein-triglycerides (VLDL-TGs), according to a study published online ...
Medical research Dec 07, 2012 | 5 / 5 (1) | 0 |
(Medical Xpress)—In a new study published in the scientific journal Circulation, scientists at Karolinska Institutet and Karolinska University Hospital show that an enzyme called arginase might have a key ...
Cardiology Nov 27, 2012 | 5 / 5 (2) | 0 |
The first evidence of blood vessel dysfunction has been found in a small cohort of generally healthy young people with cystic fibrosis, researchers report.
Medical research Nov 26, 2012 | not rated yet | 0 |
Discovery of nitric oxide delivery mechanism may point to new avenue for treating high blood pressure
(Medical Xpress)—Researchers at the University of Virginia School of Medicine have shed new light on blood pressure regulation with the discovery of an unexpected mechanism by which hemoglobin controls the delivery of nitric ...
Medical research Nov 14, 2012 | 5 / 5 (5) | 1 |
Cedars-Sinai Heart Institute researchers have found that an experimental compound may help stem the debilitating effects of muscular dystrophy by restoring normal blood flow to muscles affected by the genetic disorder.
Medical research Nov 08, 2012 | 4 / 5 (1) | 0 |
For the first time, genetically engineered tomato plants produced a peptide that mimics the actions of good cholesterol when eaten, researchers reported at the American Heart Association's Scientific Sessions 2012.
Cardiology Nov 05, 2012 | not rated yet | 0 |
A brain pathway that is stimulated by traumatic or fearful experiences can be disrupted by two compounds that show promise for preventing post-traumatic stress disorder, Indiana University researchers reported.
Psychology & Psychiatry Oct 15, 2012 | 5 / 5 (1) | 0 |
An oxide ( /ˈɒksaɪd/) is a chemical compound that contains at least one oxygen atom in its chemical formula. Metal oxides typically contain an anion of oxygen in the oxidation state of −2.
Most of the Earth's crust consists of solid oxides. Oxides result when elements are oxidized by oxygen in air. Combustion of hydrocarbons affords the two principal oxides of carbon, carbon monoxide and carbon dioxide. Even materials that are considered to be pure elements often contain a coating of oxides. For example, aluminium foil has a thin skin of Al2O3 that protects the foil from further corrosion.
Virtually all elements burn in an atmosphere of oxygen, or an oxygen rich environment. In the presence of water and oxygen (or simply air), some elements—lithium, sodium, potassium, rubidium, caesium, strontium and barium—react rapidly, even dangerously, to give the hydroxides. In part for this reason, alkali and alkaline earth metals are not found in nature in their metallic, i.e., native, form. Caesium is so reactive with oxygen that it is used as a getter in vacuum tubes, and solutions of potassium and sodium, so called NaK are used to deoxygenate and dehydrate some organic solvents. The surface of most metals consists of oxides and hydroxides in the presence of air. A well known example is aluminium foil, which is coated with a thin film of aluminium oxide that passivates the metal, slowing further corrosion. The aluminium oxide layer can be built to greater thickness by the process of electrolytic anodising. Although solid magnesium and aluminium react slowly with oxygen at STP, they, like most metals, will burn in air, generating very high temperatures. Finely grained powders of most metals can be dangerously explosive in air. Consequently, they are often used in Solid-fuel rockets.
In dry oxygen, iron readily forms iron(II) oxide, but the formation of the hydrated ferric oxides, Fe2O3−2x(OH)x, that mainly comprise rust, typically requires oxygen and water. The production of free oxygen by photosynthetic bacteria some 3.5 billion years ago precipitated iron out of solution in the oceans as Fe2O3 in the economically important iron ore hematite.
Due to its electronegativity, oxygen forms chemical bonds with almost all elements to give the corresponding oxides. Noble metals (such as gold or platinum) resist direct chemical combination with oxygen, and substances like gold(III) oxide must be generated by indirect routes.
For more information about Oxide, read the full article at
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