News tagged with molecular oxygen
Toppling Raman shift in supercritical carbon dioxide
(PhysOrg.com) -- Just as a wine glass vibrates and sometimes breaks when a diva sings the right note, carbon dioxide vibrates when light or heat serenades it. When it does, carbon dioxide exhibits a vibrational ...
Feb 29, 2012 |
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Hydrogen opens the road to graphene ... and graphane
(PhysOrg.com) -- An international research team has discovered a new method to produce belts of graphene called nanoribbons. By using hydrogen, they have managed to unzip single-walled carbon nanotubes. The ...
Nanotechnology / Nanomaterials
May 09, 2011 |
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A glow in the Martian night throws light on atmospheric circulation
(PhysOrg.com) -- A faint, infrared glow above the winter poles of Mars is giving new insights into seasonal changes in the planet's atmospheric circulation. The tell-tale night emission was first detected ...
Space & Earth / Space Exploration
Apr 04, 2012 |
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Breakthrough in the production of flood-tolerant crops
As countries such as Pakistan, Bangladesh, Vietnam and parts of the United States and United Kingdom have fallen victim to catastrophic flooding in recent years, tolerance of crops to partial or complete submergence ...
Oct 23, 2011 |
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Oxygen molecules found in deep space
ESA's Herschel space observatory has found molecules of oxygen in a nearby star-forming cloud. This is the first undisputed detection of oxygen molecules in space. It concludes a long search but also leaves ...
Aug 01, 2011 |
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Certain bacteria render mosquitoes resistant to deadly malaria parasite
cientists have identified a class of naturally occurring bacteria that can strongly inhibit malaria-causing parasites in Anopheles mosquitoes, a finding that could have implications for efforts to control malaria. The study, ...
May 12, 2011 |
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Too much of a good thing: Human activities overload ecosystems with nitrogen
Humans are overloading ecosystems with nitrogen through the burning of fossil fuels and an increase in nitrogen-producing industrial and agricultural activities, according to a new study. While nitrogen is ...
Oct 07, 2010 |
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Seeing the Invisible
(PhysOrg.com) -- Astronomers, like physicians, use as much of the electromagnetic spectrum as they can, from X-ray to radio wavelengths, to examine their subjects the with the most suitable diagnostics.
May 17, 2010 |
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Scientists unlock key enzyme using newly created 'cool' method
A team of Michigan State University scientists -- using a new cooling method they created -- have uncovered the inner workings of a key iron-containing enzyme, a discovery that could help researchers develop new medicines ...
Feb 26, 2010 |
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Researchers identify molecular 'culprit' in rise of planetary oxygen
A turning point in the history of life occurred 2 to 3 billion years ago with the unprecedented appearance and dramatic rise of molecular oxygen. Now researchers report they have identified an enzyme that ...
Space & Earth / Earth Sciences
Jan 10, 2012 |
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Toxic molecule may help birds 'see' north and south
Researchers at the University of Illinois report that a toxic molecule known to damage cells and cause disease may also play a pivotal role in bird migration. The molecule, superoxide, is proposed as a key ...
Jun 22, 2009 |
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Key protein may explain the anti-aging and anti-cancer benefits of dietary restriction
A protein that plays a key role in tumor formation, oxygen metabolism and inflammation is involved in a pathway that extends lifespan by dietary restriction. The finding, which appears in the May 22, 2009 edition of the ...
May 22, 2009 |
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Cellular metabolism self-adapts to protect against free radicals
Oxygen-consuming organisms obtain energy through cellular respiration, which is the transformation of carbohydrates and oxygen into carbon dioxide and water. This process also produces toxic oxygen radicals which must be ...
Sep 07, 2011 |
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Investigating sickle cell disease
Until recently, the pairing of molecular biology and mechanical engineering would have been viewed as highly unusual. But thanks to an explosion of imaging and simulation techniques over the past few decades, ...
Medicine & Health / Diseases, Conditions, Syndromes
Feb 25, 2011 |
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Iodate refuses to intimidate
Like a bull in a china shop, a massive, iodine-based ion called iodate should disrupt the surrounding water molecules until it is forcibly expelled. However, it doesn't. This disconnect between the molecule's ...
Nov 08, 2011 |
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