日期：2011-02-13 UT Southwestern Medical Center scientists have helped develop a novel technology to diagnose Alzheimer's disease from blood samples long before symptoms（症状） appear. This preliminary technology, which uses synthetic molecules to seek out and iden... 阅读全文>>

日期：2011-02-13 A set of maps created by the University of Sheffield have illustrated, for the first time, how our last British ice sheet shrunk during the Ice Age. Led by Professor Chris Clark from the University's Department of Geography, a team of experts develo... 阅读全文>>

日期：2011-02-13 In a study to be presented today at the Society for Maternal-Fetal Medicine's (SMFM) annual meeting, The Pregnancy Meeting , in San Francisco, researchers will present findings that prove that the use of fetal（胎儿的） heart rate monitors lowers th... 阅读全文>>

日期：2011-02-11 Those light-emitting diodes marketed as safe, environmentally preferable alternatives to traditional lightbulbs actually contain lead, arsenic（砷，砒霜） and a dozen other potentially hazardous substances, according to newly published research. LED... 阅读全文>>

日期：2011-02-11 When male squid come into contact with a chemical found on the outside of eggs laid by females, they instantly go from swimming along calmly and minding their own business to a state of extreme aggression, according to a new report published online... 阅读全文>>

日期：2011-02-09 A diet, high in fats, sugars, and processed foods in early childhood may lower IQ, while a diet packed full of vitamins and nutrients may do the opposite, suggests research published online in the Journal of Epidemiology and Community Health. The au... 阅读全文>>

日期：2011-02-09 A study led by Boston University School of Public Health (BUSPH) researchers reports that electronic cigarettes are a promising tool to help smokers quit, producing six-month abstinence（节制） rates nearly double those for traditional nicotine repl... 阅读全文>>

日期：2011-02-09 Bacteria often attack with toxins designed to hijack or even kill host cells. To avoid self-destruction, bacteria have ways of protecting themselves from their own toxins. Now, researchers at Washington University School of Medicine in St. Louis hav... 阅读全文>>

日期：2011-02-09 Much of the devastation of stroke and head trauma is due to damage caused the overproduction of a substance in the brain called glutamate（谷氨酸盐） . Preventing this damage has been impossible, until now, as many drugs don't cross the so-called bl... 阅读全文>>

日期：2011-02-09 Successful intranasal（鼻内的） delivery of stem cells to the brains of rats with Parkinson disease yielded significant improvement in motor function and reversed the dopamine（多巴胺） deficiency characteristic of the disease. These highly promisin... 阅读全文>>

日期：2011-02-09 University of Alberta researchers Pter Molnr, Andrew Derocher and Mark Lewis studied the reproductive ecology（生态学） of polar bears in Hudson Bay and have linked declining litter sizes（同胎生仔数） with loss of sea ice. The researchers say proje... 阅读全文>>

日期：2011-02-09 Lung injury is a common cause of death among patients with pneumonia, sepsis（败血症） or trauma and in those who have had lung transplants. The damage often occurs suddenly and can cause life-threatening breathing problems and rapid lung failure. T... 阅读全文>>

日期：2011-02-09 An inadequate（不充分的） amount of sleep has been associated with higher risks of obesity, heart disease, diabetes, and death. Now colon cancer can be added to the list. In a ground-breaking new study published in the Feb. 15, 2011 issue of the jou... 阅读全文>>

日期：2011-02-01 Children from poorer families do worse in school, are less likely to graduate from high school, and are less likely to go to college. A new study published in Psychological Science, a journal of the Association for Psychological Science, finds that... 阅读全文>>

日期：2011-02-01 Research by the University of Exeter has revealed that ants have a big impact on their local environment as a result of their activity as 'ecosystem engineers' and predators（捕食者） . The study, published in the Journal of Animal Ecology, found th... 阅读全文>>

日期：2011-02-01 Building a highway through Serengeti National Park may devastate one of the world's last large-scale herd migrations and the region's ecosystem, according to new research by an international team of ecologists, including a University of Guelph profe... 阅读全文>>

日期：2011-02-01 New Haven, Conn. Triceratops（三角恐龙） and Torosaurus（牛角龙） have long been considered the kings of the horned dinosaurs. But a new discovery traces the giants' family tree further back in time, when a newly discovered species appears to have r... 阅读全文>>

日期：2011-02-01 A Purdue University scientist has found genetic evidence of how some plants adapt to live in unfavorable（不宜的） conditions, a finding he believes could one day be used to help food crops survive in new or changing environments. David Salt, a prof... 阅读全文>>

日期：2011-01-31 Scientists at the Institut Pasteur and the University of Maryland have revealed how bacterial and archaea（古生菌） microbes successfully evolve their gene repertoires（全部节目） to face new challenges, predominantly by acquiring genes from other i... 阅读全文>>

日期：2011-01-31 Using a novel surgical approach, it's possible to rebuild the trachea（气管） and preserve a patient's voice after removing an invasive throat tumor, according to a new report from Henry Ford Hospital in Detroit. This case study is the first of its... 阅读全文>>