日期：2010-08-11 Progestins（孕酮，黄体酮） are used in hormone replacement therapies to counteract（抵消，中和） the negative effects of estrogen（雌性激素） on the uterus（子宫） and reduce the risk of uterine cancer. However, evidence in recent studies and clinic... 阅读全文>>

日期：2010-08-11 A new optical imaging technique described in the journal Review of Scientific Instruments, which is published by the American Institute of Physics, holds the potential to greatly improve angioplasty（血管成形术） , a surgery commonly performed to tr... 阅读全文>>

日期：2010-08-11 For emergency department patients with shortness of breath and a risk of heart failure, physicians usually grab one thing first: a stethoscope（听诊器） . It allows them to hear the S3, an abnormal third sound in the heart's rhythm strongly associat... 阅读全文>>

日期：2010-08-11 Archaeologists（考古学家） working on Stone Age remains at a site in North Yorkshire say it contains Britain's earliest surviving house. A team from the Universities of Manchester and York reveal today that the home dates to at least 8,500 BC - when... 阅读全文>>

日期：2010-08-10 Superconducting materials（超导材料） , which transmit power resistance-free, are found to perform optimally（最佳，最适宜） when high- and low-charge density varies on the nanoscale level, according to research performed at the Department of Energy... 阅读全文>>

日期：2010-08-10 Physicians are losing ground in prescribing（规定，开处方） the types of medications（药物） that have proven most effective in treating a condition known as congestive heart failure（充血性心力衰竭） , according to a new study from the Stanford Uni... 阅读全文>>

日期：2010-08-10 Researchers from Carnegie Mellon University's Molecular Biosensor and Imaging Center (MBIC) are turning up the brightness on a group of fluorescent probes（荧光探针） called fluoromodules that are used to monitor biological activities of individual... 阅读全文>>

日期：2010-08-10 The American Dietetic Association has published an updated position paper（意见书，立场书） on local support for nutrition integrity in schools that calls on schools and communities to work together to provide healthful and affordable（负担得起的）... 阅读全文>>

日期：2010-08-10 Training can alleviate（减轻，缓和） some of the pain that occupational injuries bring to the long-term care industry, according to Penn State researchers. The study looked at injuries among home health aides. Home health aides typically visit patie... 阅读全文>>

日期：2010-08-10 Duke University physicists have developed a way to produce sharp fluid jets with enough precision that they can inject material into a single, living cell. The technique promises a way to deliver drugs to cells one at a time, which is likely to be v... 阅读全文>>

日期：2010-08-10 When plant-eating mammals（哺乳类） such as goats chomp（咬牙） on a sprig（小枝，图钉） of alfalfa（苜蓿） , they could easily gobble up（狼吞虎咽） some extra protein in the form of insects that happen to get in their way. But a new report in the... 阅读全文>>

日期：2010-08-10 What makes something funny? Philosophers have been tossing（抖动，摇动） that question around since Plato. Now two psychological scientists think they've come up with（提出，想出） the formula: humor comes from a violation or threat to the way the w... 阅读全文>>

日期：2010-08-06 Wielding（使用，挥舞） two claws, a motor and a tail that swings like a grandfather clock's pendulum（钟摆） , a small robot named ROCR (rocker) scrambles up（迅速爬上，拼凑） a carpeted, 8-foot wall in just over 15 seconds the first such robot desi... 阅读全文>>

日期：2010-08-06 Poet Virginia Woolf dressed in overcoat（大衣，外套） , pockets filled with stones, walked into a river in 1941 and drowned. Two decades later, novelist Ernest Hemingway put his shotgun to his head and pulled the trigger. Journalist and author, Hunt... 阅读全文>>

日期：2010-08-06 A new study led by Boston University College of Arts Sciences researchers predicts that one of North America's most common bat species, the little brown myotis（鼠耳蝙蝠属） , will be all but extinct in the Northeast in 20 years due to an emerging d... 阅读全文>>

日期：2010-08-06 Most infectious diseases infect multiple host species, but to date, efforts to quantify the frequency and outcome of cross-species transmission (CST) of these diseases have been severely limited. This lack of information represents a major gap in kn... 阅读全文>>

日期：2010-08-04 Researchers at the University of Hawaii at Manoa say that the Leeward（顺风的） side of Hawaiian Islands may be ideal for future ocean-based renewable energy plants that would use seawater from the oceans' depths to drive massive heat engines and pr... 阅读全文>>

日期：2010-08-04 When it comes to who gets the biggest bang for the buck from Canada's Children's Fitness Tax Credit (CFTC), it's wealthier families that benefit most, University of Alberta researchers have found. It's the first study to look at the uptake（摄取，领... 阅读全文>>

日期：2010-08-04 A consistent（一致的，坚持的） all-over tan（棕褐色） may be impossible to achieve because some body areas are much more resistant to tanning than others, a study has found. Researchers - funded by the Medical Research Council (MRC) - at the Univers... 阅读全文>>

日期：2010-08-04 Where you grow up can have a big impact on the food you eat, the clothes you wear, and even how your brain works. In a report in a special section on Culture and Psychology in Perspectives on Psychological Science, a journal of the Association for P... 阅读全文>>