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<title>News: Moldova.org: Computers</title>
<link>http://www.moldova.org</link>
<description>Last news - www.moldova.org</description>
<lastBuildDate>Fri, 16 May 2008 06:47:57 GMT</lastBuildDate>
<language>en-us</language>
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<copyright>© 1997-2008 moldova.org</copyright>
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<title>UPI NewsTrack Health and Science News</title>
<link>http://it.moldova.org/stiri/eng/119481/</link>
<description><![CDATA[Scientists are wary of lunar dustHOUSTON, May 15 (UPI) -- U.S. National Space Biomedical Research Institute scientists say they are studying the possible negative effects lunar dust may have on visiting astronauts.NSBRI researchers Kim Prisk and Chantal Darquenne are evaluating how long exposure to deposits of the tiny particles of moon dust can affect an astronaut's lungs in a reduced gravity environment. The researchers say their findings will influence the design of lunar bases and could also provide benefits for healthcare on Earth, such as improved delivery of aerosol medications.During the 1960s and 1970s Apollo lunar missions, dust particles were easily transported via spacesuits into the lunar lander following moonwalks, officials said.]]></description>
<pubDate>Fri, 16 May 2008 01:05:00 +0300</pubDate>
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<title>Ultrasound mammography: Good but risky</title>
<link>http://it.moldova.org/stiri/eng/119449/</link>
<description><![CDATA[A U.S. study shows adding an ultrasound screening to routine mammography may find more breast cancers, but also hikes the rate of false positive findings.The American College of Radiology Imaging Network's biostatistics center at Brown University conducted the study and said there is a significant trade-off with ultrasound screening.The medical community may well decide that the screening benefit is offset by the increase in risk to women from a false positive finding, said Associate Professor Jeffrey Blume. However this study also shows supplemental ultrasound may be beneficial in women at high risk of breast cancer who could not, or would not, otherwise undergo a magnetic resonance imaging scan. Women should consult their doctor for more information.]]></description>
<pubDate>Thu, 15 May 2008 23:05:00 +0300</pubDate>
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<title>Huge 'hole' in the cosmos disappears</title>
<link>http://it.moldova.org/stiri/eng/119448/</link>
<description><![CDATA[A British astronomer says a giant hole in the cosmos that shocked astrophysicists when it was discovered might not have existed at all.A re-examination of the region, discovered by U.S. astronomer Lawrence Rudnick and colleagues at the University of Minnesota, has found the void might have been a statistical artifact.Rudnick found a cold spot in the cosmic microwave background measured by a U.S. satellite. Using the National Radio Astronomy Observatory's Very Large Array telescope, he concluded the cold spot coincided with a void nearly 1 billion light-years across -- the largest ever seen.But a new analysis casts doubt on Rudnick's conclusions.]]></description>
<pubDate>Thu, 15 May 2008 23:05:00 +0300</pubDate>
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<title>Genes in mice act differently in humans</title>
<link>http://it.moldova.org/stiri/eng/119440/</link>
<description><![CDATA[Although mice are used in medical research since they share 85 percent of their genes with humans, a U.S. study suggests genes behave differently in mice.University of Michigan evolutionary biologists Ben-Yang Liao and Associate Professor Jianzhi Zhang said their findings have serious implications for the use of mouse models in studying human disease.Everyone assumes deletion of the same gene in the mouse and in humans produces the same phenotype, said Zhang. Our results show that may not always be the case.Zhang and graduate student Liao focused their study on 120 so-called essential genes which, through their effects on survival or fertility, are necessary for organisms to reach sexual maturity and reproduce.]]></description>
<pubDate>Thu, 15 May 2008 22:05:00 +0300</pubDate>
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<title>Medtronic recalls selected products</title>
<link>http://it.moldova.org/stiri/eng/119439/</link>
<description><![CDATA[The U.S. Food and Drug Administration announced Medtronic Inc. is recalling selected products featuring its Carmeda BioActive surface.The FDA said the affected devices are disposable products used during cardiopulmonary bypass heart surgeries. Affected products include blood oxygenators, reservoirs, pumps, cannulae and tubing packs. This action follows the FDA's April recommendation to device manufacturers that heparin supplies be checked with newly developed tests.The agency said limited lots of Carmeda-coated products manufactured with heparin have been found to have been contaminated with oversulfated chondroitin sulfate.]]></description>
<pubDate>Thu, 15 May 2008 22:05:00 +0300</pubDate>
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<title>Trophic-brand kelp warning issued</title>
<link>http://it.moldova.org/stiri/eng/119438/</link>
<description><![CDATA[Health Canada issued a warning Thursday cautioning people not to use Trophic-brand kelp and glutamic acid due to a health risk.Officials said the product -- being recalled by its manufacturer, Trophic Canada Ltd.-- contains an excessive amount of iodine, posing a potential health threat.Health Canada said excessive iodine exposure can cause either hypothyroidism (underactive thyroid disease) or hyperthyroidism (overactive thyroid disease). Symptoms of hypothyroidism include weight gain, joint or muscle pain, fatigue, weakness, depression and abnormal menstrual cycles. Eventually it can lead to infertility and heart disease.]]></description>
<pubDate>Thu, 15 May 2008 22:05:00 +0300</pubDate>
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<title>New way to inhibit HIV target is created</title>
<link>http://it.moldova.org/stiri/eng/119429/</link>
<description><![CDATA[U.S. scientists say they've created what's believed to be the first new mechanism in more than 20 years for treating the human immunodeficiency virus.Researchers at the University of Michigan said they used computer models to develop a compound that inhibits the HIV protease -- an enzyme that promotes the replication of the virus. The scientists said their achievement might lead to a new class of AIDS drugs.The study's principal investigator, Professor Heather Carlson, stressed the finding is only a preliminary, yet significant, step.It's very easy to make an inhibitor, (but) it's very hard to make a drug, said Carlson. This compound is too weak to work in the human body. The key is to find more compounds that will work by the same mechanism.]]></description>
<pubDate>Thu, 15 May 2008 22:05:00 +0300</pubDate>
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<title>Urgent efforts needed to save white oaks</title>
<link>http://it.moldova.org/stiri/eng/119421/</link>
<description><![CDATA[U.S. scientists say aggressive efforts are needed if communities of Oregon white oak trees, now in decline, are to be saved in the Pacific Northwest.Peter Gould, a research forester at the U.S. Forest Service's Pacific Northwest Research Station in Portland, Ore., said fire suppression programs, conifer and invasive plant encroachment and land use changes have resulted in the loss of as much as 99 percent of the oak communities historically present in some areas of the region.The study's findings indicate that if oaks are to be successfully restored, more aggressive management is needed within the next several decades.]]></description>
<pubDate>Thu, 15 May 2008 21:05:00 +0300</pubDate>
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<title>Scientists closer to understand pain</title>
<link>http://it.moldova.org/stiri/eng/119407/</link>
<description><![CDATA[U.S. neuroscientists say they are moving closer to understanding pain sensitivity and specifically why it's variable instead of constant.Pain sensitivity increases during inflammation or injury and we want to know what molecules are involved in pain sensation when sensitivity is elevated, said John Hopkins University Assistant Professor Xinzhong Dong.He said researchers know the ability to sense temperature heat and spice is controlled by the TRPV1 protein channel found on the surface of certain nerve cells. When inactive, TRPV1 channels are closed and there is no pain sensation.]]></description>
<pubDate>Thu, 15 May 2008 21:05:00 +0300</pubDate>
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<title>Dutch set new solar cell efficiency mark</title>
<link>http://it.moldova.org/stiri/eng/119406/</link>
<description><![CDATA[Dutch scientists say they've achieved a new efficiency record for solar cells by the use of an ultra-thin aluminum oxide layer at the front of each cell.The Eindhoven University of Technology researchers -- Bram Hoex, Professor Richard van de Sanden and Associate Professor Erwin Kessels -- said the 1 percent improvement might appear modest, but it can enable solar cell manufacturers to greatly increase the performance of their products, thereby reducing the cost of solar energy.Hoex earned his Ph.D. last week with the research project.]]></description>
<pubDate>Thu, 15 May 2008 21:05:00 +0300</pubDate>
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