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) |
14
|
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) |
0
|
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) |
0
|
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) |
4
|
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) |
0
|
Scientist creates new cancer drug that is ten times more potent
Legend has it that Ralph Waldo Emerson once said, "Build a better mousetrap, and the world will beat a path to your door." University of Missouri researchers are doing just that, but instead of building mousetraps, ...
Cancer
Aug 29, 2012 |
5 / 5 (9) |
1
|
Unexpected signaling role for foul-smelling hydrogen sulfide in cell response to protein misfolding
Something rotten never smelled so sweet. This is what members of a team of scientists at Cold Spring Harbor Laboratory (CSHL) are telling one another as they discuss a new finding they did not expect to make. They have discovered ...
Medical research
Dec 13, 2011 |
5 / 5 (1) |
0
|
Hydrogen peroxide provides clues to immunity, wound healing and tumor biology
Hydrogen peroxide isn't just that bottled colorless liquid in the back of the medicine cabinet that's used occasionally for cleaning scraped knees and cut fingers.
Medical research
Nov 21, 2011 |
4.4 / 5 (9) |
1
|
Targeting bacterial gas defenses allow for increased efficacy of numerous antibiotics
Although scientists have known for centuries that many bacteria produce hydrogen sulfide (H2S) it was thought to be simply a toxic by-product of cellular activity. Now, researchers at NYU School of Medicine have discovered ...
Medical research
Nov 17, 2011 |
not rated yet |
0
|
Garlic oil component may form treatment to protect heart
A component of garlic oil may help release protective compounds to the heart after heart attack, during cardiac surgery, or as a treatment for heart failure.
Cardiology
Nov 16, 2011 |
4 / 5 (1) |
0
|
Common bacteria cause some colon tumors by altering peroxide-producing gene
Working with lab cultures and mice, Johns Hopkins scientists have found that a strain of the common gut pathogen Bacteroides fragilis causes colon inflammation and increases activity of a gene called spermine oxidase (SMO) ...
Cancer
Nov 05, 2011 |
4.5 / 5 (2) |
0
|
New instrument helps researchers see how diseases start and develop in minute detail
Magnetic resonance imaging (MRI) is an established technique which over the years has made it possible for researchers and healthcare professionals to study biological phenomena in the body without using ionising radiation, ...
Medical research
Oct 21, 2011 |
not rated yet |
0
|
Tiny oxygen generators boost effectiveness of anticancer treatment
(Medical Xpress) -- Researchers have created and tested miniature devices that are implanted in tumors to generate oxygen, boosting the killing power of radiation and chemotherapy.
Cancer
Aug 31, 2011 |
not rated yet |
2
|
Scientists show 'swamp gas' protects blood vessels from complications of diabetes
Hydrogen sulfide is a foul-smelling gas with an odor resembling that of rotten eggs. Sometimes called "swamp gas," this toxic substance is generally associated with decaying vegetation, sewers and noxious industrial emissions. ...
Medical research
Aug 02, 2011 |
5 / 5 (1) |
0
|
Disease-causing tangle could spawn new materials
When most people hear the word amyloid, they immediately think of Alzheimer's disease. And indeed, it was in the brains of Alzheimer's patients that these dense protein masses were first identified. But it ...
Medical research
Aug 01, 2011 |
5 / 5 (1) |
4
|
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.
