News tagged with hydrogen
Gray hair and vitiligo reversed at the root
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) |
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Foul-smelling gas shows health benefits in reducing joint swelling
A gas associated with the smell of rotten eggs has proven to effectively reduce joint swelling, in research which could lead to advances in the treatment of arthritis.
Arthritis & Rheumatism
Apr 29, 2013 |
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Decontamination of unused medical supplies reduces health-care costs
In rooms of patients with multidrug-resistant organisms (MDROs), the outside of the packages containing sterile items can become contaminated. Unused medical supplies are often thrown away to prevent the items from becoming ...
Health
Apr 09, 2013 |
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Rotorua's hydrogen sulphide does not worsen asthma
In a recently published collaborative study by the University of Otago, Wellington, the University of California, Berkeley, and Stanford University it has been shown that there are no ill effects from low level hydrogen sulphide ...
Inflammatory disorders
Apr 03, 2013 |
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New insights into how genes turn on and off
Researchers at UC Davis and the University of British Columbia have shed new light on methylation, a critical process that helps control how genes are expressed. Working with placentas, the team discovered that 37 percent ...
Genetics
Mar 27, 2013 |
5 / 5 (3) |
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Scientists find calcium is the initial trigger in our immune response to healing
For the first time scientists studying the cellular processes underlying the body's response to healing have revealed how a flash of calcium is the very first step in repairing damaged tissue. The findings, published in Current Bi ...
Surgery
Feb 14, 2013 |
4 / 5 (2) |
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New effort to find why replacement hips and knees go bad
A Case Western Reserve University chemistry professor has begun imbedding magnetic nanoparticles in the toughest of plastics to understand why more than 40,000 Americans must replace their knee and hip replacements annually.
Medical research
Feb 04, 2013 |
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Study finds health departments hindered in addressing health concerns from animal production sites
State and local health departments face significant barriers and usually do not get involved when confronted with public health concerns resulting from food animal production sites, according to a new study led by researchers ...
Health
Feb 04, 2013 |
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Discovery that specific protein modification important in cancer development
All proteins are made from chains of amino acids and their functions can be modified by adding small molecules to specific amino acids. One such modification is the addition of a methyl group, which is made ...
Cancer
Feb 01, 2013 |
5 / 5 (1) |
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Hydrogen sulfide: The next anti-aging agent?
Hydrogen sulfide (H2S) may play a wide-ranging role in staving off aging, according to a paper published online ahead of print in the journal Molecular and Cellular Biology. In this review article, a team from China explor ...
Medical research
Jan 29, 2013 |
5 / 5 (1) |
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Disinfecting robots help prevent superbug infections at Hopkins
Even as epidemiologists worry about a shrinking arsenal of antibiotics to fight potentially deadly drug-resistant bacteria, researchers at Johns Hopkins Hospital are betting on another weapon to prevent infections: robots.
Diseases, Conditions, Syndromes
Jan 04, 2013 |
5 / 5 (2) |
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Hydrogen peroxide vapor enhances hospital disinfection of superbugs
Infection control experts at The Johns Hopkins Hospital have found that a combination of robot-like devices that disperse a bleaching agent into the air and then detoxify the disinfecting chemical are highly effective at ...
Diseases, Conditions, Syndromes
Jan 01, 2013 |
5 / 5 (10) |
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Patients with family history of colorectal cancer may be at risk for aggressive form of the disease
BOSTON—When people with a family history of colorectal cancer develop the disease, their tumors often carry a molecular sign that the cancer could be life-threatening and may require aggressive treatment, Dana-Farber Cancer ...
Cancer
Dec 12, 2012 |
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Researchers investigate the amyloid-beta peptide behind Alzheimer's
Using solid-state nuclear magnetic resonance (NMR) spectroscopy, researchers at Luleå University of Technology in collaboration with Warwick University in the UK for the first time in the world managed to ...
Alzheimer's disease & dementia
Nov 05, 2012 |
not rated yet |
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Blood cells may offer telltale clues in cancer diagnosis
Postdoctoral Research Fellow Devin Koestler is a biostatistician in the Geisel School of Medicine at Dartmouth. He develops and applies statistical methods to large volumes of data, seeking new approaches ...
Cancer
Oct 12, 2012 |
5 / 5 (1) |
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Hydrogen
Hydrogen (pronounced /ˈhaɪdrədʒən/) is the chemical element with atomic number 1. It is represented by the symbol H. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H2. With an atomic weight of 1.00794 u, hydrogen is the lightest element.
Hydrogen is the most abundant chemical element, constituting roughly 75% of the universe's elemental mass. Stars in the main sequence are mainly composed of hydrogen in its plasma state. Elemental hydrogen is relatively rare on Earth. Industrial production is from hydrocarbons such as methane with most being used "captively" at the production site. The two largest uses are in fossil fuel processing (e.g., hydrocracking) and ammonia production mostly for the fertilizer market. Hydrogen may be produced from water by electrolysis at substantially greater cost than production from natural gas.
The most common isotope of hydrogen is protium (name rarely used, symbol H) with a single proton and no neutrons. In ionic compounds it can take a negative charge (an anion known as a hydride and written as H−), or as a positively-charged species H+. The latter cation is written as though composed of a bare proton, but in reality, hydrogen cations in ionic compounds always occur as more complex species. Hydrogen forms compounds with most elements and is present in water and most organic compounds. It plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules. As the only neutral atom with an analytic solution to the Schrödinger equation, the study of the energetics and bonding of the hydrogen atom played a key role in the development of quantum mechanics.
Hydrogen is important in metallurgy as it can embrittle many metals, complicating the design of pipelines and storage tanks. Hydrogen is highly soluble in many rare earth and transition metals and is soluble in both nanocrystalline and amorphous metals. Hydrogen solubility in metals is influenced by local distortions or impurities in the crystal lattice.
For more information about Hydrogen, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
