News tagged with atmospheric nitrogen
Is it ripe? Carbon nanotube-based ethylene sensor establishes fruit ripeness
(Phys.org) -- The term ethylene (ethene) generally brings to mind polyethylene plastics, not fruit. However, ethylene is more than just a feedstock for chemical industry, it is also the smallest plant hormone, ...
Chemistry / Analytical Chemistry
May 19, 2012 |
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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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Hong Kong clean air targets fail to impress
Environmentalists on Wednesday expressed disappointment at new clean-air targets for Hong Kong, as research showed pollution-related illnesses killed more than 3,000 residents a year.
Jan 18, 2012 |
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Acid rain poses a previously unrecognized threat to Great Lakes sugar maples
(PhysOrg.com) -- The number of sugar maples in Upper Great Lakes forests is likely to decline in coming decades, according to University of Michigan ecologists and their colleagues, due to a previously unrecognized ...
Jan 16, 2012 |
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Soil microbiologists discover Aberdeen microbe of global agricultural significance
(PhysOrg.com) -- Organisms that oxidise ammonia were first discovered in 1890. Although a natural process, a major consequence of the activities of such organisms in soil is the transformation and loss of ...
Jan 10, 2012 |
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Out of Africa and Into the American Midwest
Grasses bend in the wind, their golden tips tracing arcs across fields that stretch toward the horizon. Sunwashed by a fading evening light, these reedy ballet dancers are central figures in savanna, an ecosystem ...
Jan 09, 2012 |
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Seeing the forest under the trees
(PhysOrg.com) -- Scientists recently discovered nitrogen that falls from the atmosphere in acid rain can influence large tracts of sugar maples in North America.
Dec 08, 2011 |
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In nitrogenase - enzyme critical for life, X-ray emission cracks mystery atom
Like a shadowy character just hidden from view, a mystery atom in the middle of a complex enzyme called nitrogenase had long hindered scientists' ability to study the enzyme fully.
Nov 17, 2011 |
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Exploring the atmosphere of exoplanet WASP-14b
First discovered in 2008, WASP 14b is an interesting exoplanet. It is roughly seven times as massive as Jupiter, but only 30% larger, making it among the densest known exoplanets. Recently, it was the target ...
Nov 15, 2011 |
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Researchers explore plankton's shifting role in deep sea carbon storage
The tiny phytoplankton Emiliania huxleyi, invisible to the naked eye, plays an outsized role in drawing carbon from the atmosphere and sequestering it deep in the seas. But this role may change as ocean water becomes warmer ...
Space & Earth / Earth Sciences
Oct 13, 2011 |
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The hazy history of Titan's air
What rocky moon has a nitrogen-rich atmosphere, Earth-like weather patterns and geology, liquid hydrocarbon seas and a relatively good chance to support life? The answer is Titan, the fascinating moon of Saturn.
Space & Earth / Space Exploration
Oct 13, 2011 |
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Nitrate levels rising in northwestern Pacific ocean: study
Changes in the ratio of nitrate to phosphorus in the oceans off the coasts of Korea and Japan caused by atmospheric and riverine pollutants may influence the makeup of marine plants and influence marine ecology, according ...
Sep 22, 2011 |
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Model helps pinpoint cyanobacterial genes that capture the sun's energy
A new computer model of blue-green algae can predict which of the organism's genes are central to capturing energy from sunlight and other critical processes.
Jun 23, 2011 |
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Researchers predict record Gulf of Mexico 'dead zone' due to Mississippi River flooding
ANN ARBOR, Mich.---Extreme flooding of the Mississippi River this spring is expected to result in the largest Gulf of Mexico "dead zone" on record, according to a University of Michigan aquatic ecologist and his colleagues.
Jun 15, 2011 |
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Chemical engineers invent portable hydrogen reactor for fuel cells
Chemical Engineering students at Stevens Institute of Technology are transforming the way that American soldiers power their battery-operated devices by making a small change: a really small change. Capitalizing on the unique ...
May 23, 2011 |
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