News tagged with composition
Scientific debate sparked over carbon sink data
Nov 18, 2009 |
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(PhysOrg.com) -- According to research published this week in Nature Geoscience, emissions of carbon dioxide continue to outstrip the ability of the world’s natural ‘sinks’ to absorb carbon. ...
Students with a lower socioeconomic background benefit from daily school physical activity
Nov 17, 2009 |
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German school students -- especially those with low socioeconomic status (SES) -- significantly improved their exercise capacity and body leanness after a year of daily physical activity classes, according to research presented ...
Genome Engineering Could Provide New Method of Creating Diesel
Nov 16, 2009 |
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When we think of genetic engineering, our minds often jump to giant tomatoes and animal cloning. However, this is not always the case.
Earth's early ocean cooled more than a billion years earlier than thought (w/ Video)
Space & Earth / Earth Sciences
Nov 11, 2009 |
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(PhysOrg.com) -- The scalding-hot sea that supposedly covered the early Earth may in fact never have existed, according to a new study by Stanford University researchers who analyzed isotope ratios in 3.4 ...
Ionic Liquid's Makeup Measurably Non-Uniform at the Nanoscale
Nov 10, 2009 |
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(PhysOrg.com) -- Researchers at Texas Tech University, Queen's University in Belfast, Ireland, the University of Rome and the National Research Council in Italy recently made a discovery about the non-uniform chemical compositions ...
Rosetta's final Earth boost
Space & Earth / Space Exploration
Nov 04, 2009 |
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ESA's comet chaser Rosetta will swing by Earth for the last time on 13 November to pick up energy and begin the final leg of its 10-year journey to comet 67P/Churyumov-Gerasimenko. ESA's European Space Operations ...
Children who often drink full-fat milk weigh less
Nov 03, 2009 |
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Eight-year-old children who drink full-fat milk every day have a lower BMI than those who seldom drink milk. This is not the case for children who often drink medium-fat or low-fat milk. This is one conclusion of a thesis ...
New methods are changing old materials
Oct 28, 2009 |
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(PhysOrg.com) -- A company that makes steel for bearings used in heavy trucks had a big problem. The trucks travel through harsh, perilous environments such as Siberia, and an unexpected bearing failure on ...
Where Did the Uranium Go?
Oct 26, 2009 |
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(PhysOrg.com) -- Uranium's migration through the soil depends on groundwater's chemical composition, according to a recent study by Pacific Northwest National Laboratory. Scientists showed that uraniumattached ...
Fitness levels decline with age, especially after 45
Oct 26, 2009 |
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Men and women become gradually less fit with age, with declines accelerating after age 45, according to a report in the October 26 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. However, mainta ...
Transforming nanowires into nano-tools using cation exchange reactions
Oct 23, 2009 |
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A team of engineers from the University of Pennsylvania has transformed simple nanowires into reconfigurable materials and circuits, demonstrating a novel, self-assembling method for chemically creating nanoscale ...
Redefining obesity's health risks: Scientists make the case for new body fat assessment
Oct 19, 2009 |
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The body mass index (BMI) has long been the yardstick in deciding who is at risk because of their weight. BMI is essentially a measure of density, identifying 'under-' and 'over-weight' risk groups. Recent studies however ...
Goddard Visualization Team Previews Lunar Impact
Space & Earth / Space Exploration
Oct 08, 2009 |
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(PhysOrg.com) -- At 7:30 a.m. EDT on October 9, a two-ton rocket body will slam into a crater near the moon's south pole. By studying the resulting plume of gas and dust, scientists hope this grand experiment ...
New analyzers to unlock mineral value
Oct 06, 2009 |
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Scientists are working on a new range of materials characterisation analysers and techniques that could help unlock the value contained in Australia's mineral deposits and improve processing performance, according ...
Breaking Down the Barrier for Smaller, Faster Electronic Devices
Oct 05, 2009 |
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(PhysOrg.com) -- A team of international researchers is the first to uncover the chemical composition and structure of a microelectronics element that is vital to producing ever smaller - and, thus, cheaper ...
