News tagged with oxygen gas
Processes at the surface of catalysts: Oxygen defects act as active centers
In chemical industry, heterogeneous catalysis is of crucial importance to the manufacture of basic or fine chemicals, in catalytic converters of exhaust gas, or for the chemical storage of solar energy. Scientists ...
Apr 10, 2012 |
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Solar thermal process produces cement with no carbon dioxide emissions
(Phys.org) -- While the largest contributor to anthropogenic greenhouse gas emissions is the power industry, the second largest is the more often overlooked cement industry, which accounts for 5-6% of all ...
Apr 10, 2012 |
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Hazy shades of life on early Earth
A 'see-sawing' atmosphere over 2.5 billion years ago preceded the oxygenation of our planet and the development of complex life on Earth, a new study has shown.
Space & Earth / Earth Sciences
Mar 18, 2012 |
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New study argues against conclusion that bacteria consumed Deepwater Horizon methane
A technical comment published in the current (May 27) edition of the journal Science casts doubt on a widely publicized study that concluded that a bacterial bloom in the Gulf of Mexico consumed the methane discharged from t ...
Space & Earth / Earth Sciences
May 26, 2011 |
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Deep plumes of oil could cause dead zones in the Gulf
A new simulation of oil and methane leaked into the Gulf of Mexico suggests that deep hypoxic zones or "dead zones" could form near the source of the pollution. The research investigates five scenarios of oil and methane ...
Aug 19, 2010 |
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Aquatic 'dead zones' contributing to climate change
The increased frequency and intensity of oxygen-deprived "dead zones" along the world's coasts can negatively impact environmental conditions in far more than just local waters. In the March 12 edition of the journal Science, Univer ...
Mar 11, 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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Study documents reaction rates for three chemicals with high global warming potential
A study published this week in the journal Proceedings of the National Academy of Sciences (PNAS) provides new information about the rates at which three of the most powerful greenhouse gases are destroyed ...
Space & Earth / Earth Sciences
Jan 26, 2010 |
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More oxygen -- colder climate
Everybody talks about CO2 and other greenhouse gases as causes of global warming and the large climate changes we are currently experiencing. But what about the atmospheric and oceanic oxygen content? Which role does oxyge ...
Space & Earth / Earth Sciences
Sep 10, 2009 |
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NASA uncovers cause of shuttle delay
Engineers from the US space agency NASA think they have discovered the cause of a hydrogen leak which twice delayed a high-profile shuttle launch this month, according to the agency.
Space & Earth / Space Exploration
Jun 23, 2009 |
3.7 / 5 (3) |
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Increasing carbon dioxide and decreasing oxygen make it harder for deep-sea animals to 'breathe'
(PhysOrg.com) -- New calculations made by marine chemists from the Monterey Bay Aquarium Research Institute (MBARI) suggest that low-oxygen "dead zones" in the ocean could expand significantly over the next ...
Space & Earth / Earth Sciences
Apr 17, 2009 |
4.8 / 5 (78) |
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Did a nickel famine trigger the 'Great Oxidation Event'?
(PhysOrg.com) -- The Earth's original atmosphere held very little oxygen. This began to change around 2.4 billion years ago when oxygen levels increased dramatically during what scientists call the "Great ...
Space & Earth / Earth Sciences
Apr 08, 2009 |
4.5 / 5 (21) |
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Sunlight turns carbon dioxide to methane
Dual catalysts may be the key to efficiently turning carbon dioxide and water vapor into methane and other hydrocarbons using titania nanotubes and solar power, according to Penn State researchers.
Nanotechnology / Nanomaterials
Mar 05, 2009 |
4.8 / 5 (17) |
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