日期：2010-09-12 Each year, thousands of acres（英亩） of crops are planted throughout Africa, Asia and Australia only to be laid to waste by a parasitic（寄生的） plant called Striga（独脚金） , also known as witchweed. It is one of the largest challenges to food s... 阅读全文>>

日期：2010-09-10 As children in Western cultures grow, they learn to place numbers on a mental number line, with smaller numbers to the left and spaced further apart than the larger numbers on the right. Then the number line changes to become more linear（线型的） ,... 阅读全文>>

日期：2010-09-10 For cancer patients, who have an increased risk of developing venous thromboembolism ( VTE静脉血栓栓塞 ) due to a hyperactive（极度活跃的） blood coagulation system（血凝固） , there is now an enhanced risk model to predict their chance of developin... 阅读全文>>

日期：2010-09-10 Amyloid（淀粉的） beta () proteins, widely thought to cause Alzheimer's disease (AD), block the transport of vital cargoes（货物） inside brain cells. Scientists at the Gladstone Institute of Neurological Disease (GIND) have discovered that reducing... 阅读全文>>

日期：2010-09-10 The complex fracture pattern created by the earthquake in Concepcin (Chile) on 27 February 2010 was to a certain extent predictable（可预言的） . GPS observations from the years before the earthquake showed the pattern of stresses that had accumulat... 阅读全文>>

日期：2010-09-10 For the first time, a team of MIT chemical engineers has observed single ions（离子） marching through a tiny carbon-nanotube channel. Such channels could be used as extremely sensitive detectors or as part of a new water- desalination（脱盐） syste... 阅读全文>>

日期：2010-09-10 Fresh insight into（深刻理解，洞察） how plants slow their growth in cold weather could help scientists develop crops suited to cooler environments. Researchers have shown for the first time that a gene known as Spatula limits the growth of plants i... 阅读全文>>

日期：2010-09-10 As speech recognition（语音辨识） systems become more commonplace - on the computer desktop top, at the call centre and even in the car - it is increasingly important to ensure that the voice signal is as clear as possible before it is processed by... 阅读全文>>

日期：2010-09-10 Taking medications（药物，药物治疗） to treat insomnia（失眠） and anxiety increases mortality risk by 36%, according to a study conducted by Genevive Belleville, a professor at Universit Laval's School of Psychology. The details of this study are p... 阅读全文>>

日期：2010-09-10 The widespread use of a simplified clinical tool to estimate future coronary（冠的） risk could lead to the classification of millions of Americans into different risk groups than when using the original, gold-standard tool. Millions of patients may... 阅读全文>>

日期：2010-09-10 Cotton growers can produce more cotton if they plant early, but not without irrigation. That's the finding of an article published in the September-October 2010 Agronomy（农学，农艺学） Journal, a publication of the American Society of Agronomy. Bil... 阅读全文>>

日期：2010-09-09 Treating intensive care（重病特别护理） patients who develop life-threatening bacterial infections, or septicemia（败血病） , with insulin potentially could reduce their chances of succumbing to（屈服于） the infection, if results of a new prelimina... 阅读全文>>

日期：2010-09-09 Research!America today called on Congress to take legislative（立法的） action that will allow federal funding for human embryonic（胚胎的） stem cell research to proceed, in light of U.S. District Judge Royce Lamberth's refusal yesterday to lift hi... 阅读全文>>

日期：2010-09-09 In groups with high rates of posttraumatic（外伤后的） stress disorder (PTSD), such as the survivors of the Nazi Death Camps, the adjustment problems of their children, the so-called Second Generation, have received attention by researchers. Studies... 阅读全文>>

日期：2010-09-09 A research team led by Cary Pirone from the Department of Biological Sciences at Florida International University has identified bilirubin（胆红素） in the popular Bird of Paradise（天堂鸟） plant. The breakthrough study, published in the September... 阅读全文>>

日期：2010-09-09 A North Carolina State University researcher and colleagues have figured out a way to make an aluminum alloy（铝合金） , or a mixture of aluminum and other elements, just as strong as steel. That's important, says Dr. Yuntian Zhu, professor of mater... 阅读全文>>

日期：2010-09-09 The government's role in improving the nation's nutrition is now firmly established with nutritional labeling for restaurant meals now mandated（托管，执行） across the United States as part of HR 3590 Patient Protection and Affordable Health Care A... 阅读全文>>

日期：2010-09-09 Repeal（废除，撤销） of birthright citizenship for the U.S.-born children of unauthorized immigrants would expand the nation's unauthorized population by at least 5 million over the next decade, according to a new report from the Migration Policy In... 阅读全文>>

日期：2010-09-09 In what could be a step toward higher efficiency solar cells, an international team including University of Michigan professors has invalidated（使无效） the most commonly used model to explain the behavior of a unique class of materials called high... 阅读全文>>

日期：2010-09-09 What if there were a way to predict when a species was about to become extinctin time to do something about it? Findings from a study by John M. Drake, associate professor in the University of Georgia Odum School of Ecology, and Blaine D. Griffen, a... 阅读全文>>