News tagged with valve
Catheter-delivered Valve May Help People with Heart Defects Avoid Multiple Surgeries
Nov 02, 2009 |
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(PhysOrg.com) -- Children born with certain heart defects have impaired blood flow from the right ventricle to the pulmonary artery leading to the lungs, requiring implanted devices (known as right-ventricular ...
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Astronauts take spacewalk No. 3 after suit snag
Space & Earth / Space Exploration
Nov 23, 2009 |
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(AP) -- A pair of astronauts stepped out on the third and final spacewalk of their shuttle mission Monday, helping to install an enormous oxygen tank at the International Space Station.
'Safety valve' protects photosynthesis from too much light
Nov 25, 2009 |
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Photosynthetic organisms need to cope with a wide range of light intensities, which can change over timescales of seconds to minutes. Too much light can damage the photosynthetic machinery and cause cell death. Scientists ...
'Uncharted 2' leads Video Game Award nominations
Nov 18, 2009 |
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(AP) -- "Uncharted 2: Among Thieves" has seized a leading eight nominations for this year's Video Game Awards, Spike TV announced Wednesday.
Golden Oldie: Key Role for Ancient Protein in Algae Photosynthesis
Nov 27, 2009 |
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The discovery that an ancient light harvesting protein plays a pivotal role in the photosynthesis of green algae should help the effort to develop algae as a biofuels feedstock. Researchers with the Lawrence ...
Study uses satellite imagery to identify active magma systems in East Africa's Rift Valley
Space & Earth / Earth Sciences
Nov 04, 2009 |
4.5 / 5 (4) |
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A team from the University of Miami, University of El Paso and University of Rochester have employed Interferometric Synthetic Aperture Radar (InSAR) images compiled over a decade to study volcanic activity ...
Young athletes need dual screening tests for heart defects, study suggests
Nov 15, 2009 |
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To best detect early signs of life-threatening heart defects in young athletes, screening programs should include both popular diagnostic tests, not just one of them, according to new research from heart experts at Johns ...
Engineers, doctors develop novel material that could help fight arterial disease
Nov 25, 2009 |
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A fortuitous discovery that grew out of a collaboration between UCLA engineers and physicians could potentially offer hope to the nearly 10 million Americans who suffer from peripheral arterial disease.
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