News tagged with barium
LED closes the yellow gap: Full conversion of blue into amber light by new nitride phosphor
Jul 23, 2009 |
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(PhysOrg.com) -- Monochromatic light-emitting diodes cover a large part of the visible spectrum with high effi-ciency. For blue light, nitride diodes achieve external quantum efficiencies in excess of 65%, ...
'Look Mom No Electricity': Transmitting Information with Chemistry
Chemistry / Analytical Chemistry
Jun 19, 2009 |
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(PhysOrg.com) -- While information technology is generally thought to require electrons or photons for transmitting information, scientists have recently demonstrated a third method of transmission: chemical ...
Contamination under boats no worse than elsewhere in California bay, study says
Mar 13, 2009 |
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A yearlong federal study has determined levels of contaminated sediment found under obsolete, rotting government ships anchored in Suisun Bay, in central California, are no higher than those found elsewhere in local waters, ...
Search results for barium
Whole milk is effective and cost-effective as oral contrast agent
May 30, 2008 |
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An item commonly found in many homes – whole milk – is just as effective, costs less and is easier on the patient than a diluted (0.1%) barium suspension that is also commonly used as an oral contrast agent in conjunction ...
New procedure in diagnosing small bowel disorders proves efficient and effective
Apr 11, 2008 |
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Sonoenteroclysis, a new sonographic method in evaluating and diagnosing small bowel disorders is an effective alternative to the usual method of barium enteroclysis, according to a recent study conducted by researchers at ...
Paving the Way for Crystal Growth
Mar 07, 2007 |
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In order to study the properties of LBCO superconductors, scientists need to produce large, single crystals of the material - a difficult task that wasn't possible until recently. At the state-of-the-art crystal ...
Catch and Release: Fishing for Barium Ions
Dec 05, 2006 |
4.4 / 5 (14) |
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How do you identify the rare thing you're looking for in a vast sea? Go fishing.
Hidden gems: New composites are stiffer than diamond
Feb 15, 2007 |
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Using a unique combination of barium titanate and tin, University of Wisconsin-Madison researchers have made the first known material that's stiffer than diamond. The group published its results in the Feb. 2 issue of Science.
Catalysis discovery takes aim at NOx emissions
Feb 22, 2008 |
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A discovery in molecular chemistry may help remove a barrier to widespread use of diesel and other fuel-efficient "lean burn" vehicle engines. Researchers at the Department of Energy's Pacific Northwest National ...
A new screening test for chronic abdominal pain
Dec 29, 2008 |
4 / 5 (1) |
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Evaluation of chronic abdominal pain of luminal etiology is a challenging problem for the primary care physicians and gastroenterologists. The exact localization of lesion to either small or large bowel remains an elusive ...
Ion flow through membrane channels is dictated by particle size
Biology /
Jun 27, 2007 |
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Ion channels are small passageways that control the movement of electrically charged particles across a cell’s membrane. But they’re persnickety gatekeepers: Each channel allows only one kind of ion to flow through. Now, ...
Can Nemo Find His Way Home?
Biology /
May 03, 2007 |
4.7 / 5 (9) |
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The fate of ocean fish larvae has remained a mystery to science until now, but a University of Arkansas researcher and his colleagues have used a novel technique to directly explore their journey from egg ...
Possible link found between X-rays and prostate cancer
Jul 15, 2008 |
3.8 / 5 (4) |
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Researchers at The University of Nottingham have shown an association between certain past diagnostic radiation procedures and an increased risk of young-onset prostate cancer — a rare form of prostate cancer which affects ...
List of search results for barium
