日期：2011-01-31 Australian researchers have come one step closer to understanding how the rhythm of the heartbeat is controlled and why many common drugs, including some antibiotics, antihistamines and anti-psychotics, can cause a potentially fatal abnormal heart r... 阅读全文>>

日期：2011-01-31 Previously linked to the severity of asthma（哮喘） and chronic obstructive pulmonary disease ( COPD慢性阻塞性肺病 ) in humans, vitamin D deficiency has now been shown to alter lung structure and function in young mice. The new study, conducted by r... 阅读全文>>

日期：2011-01-30 Plants are attacked by a multitude of（大批的，众多的） insects and mammals. As defense against these herbivores（食草动物） they developed complex defense mechanisms over the course of evolution: spines, thorns, leaf hairs and a number of toxic che... 阅读全文>>

日期：2011-01-30 It is well known that teenagers take risks and that when they do, they like to have company. Teens are five times more likely to be in a car accident when in a group than when driving alone, and they are more likely to commit a crime in a group. Now... 阅读全文>>

日期：2011-01-30 Ecology drives evolution. In today's issue of the journal Science, UC Davis expert Thomas Schoener describes growing evidence that the reverse is also true, and explores what that might mean to our understanding of how environmental change affects s... 阅读全文>>

日期：2011-01-30 Each year, approximately 150,000 Canadians have a transient（短暂的） ischemic attack ( TIA短暂性脑缺血发作 ), sometimes known as a mini-stroke. New research published today in Stroke, the journal of the American Heart Association shows these attack... 阅读全文>>

日期：2011-01-30 An antibiotic known for its immunosuppressive（抑制免疫力的） functions could also point the way to the development of new anti-cancer agents, researchers at the Indiana University School of Medicine have reported. The study determined that the comp... 阅读全文>>

日期：2011-01-30 The increased frequency of drought observed in Eastern Africa over the last 20 years is likely to continue as long as global temperatures continue to rise, according to UC Santa Barbara scientist Park Williams. The new research, published in Climate... 阅读全文>>

日期：2011-01-30 Despite penicillin（盘尼西林） and the dozens of antibiotics that followed it, streptococcus（链球菌） bacteria have remained a major threat to health throughout the world. The reason: the superb（极好的，华丽的） evolutionary skills of this pathoge... 阅读全文>>

日期：2011-01-28 Scientists have created a diamond-like lattice（晶格，格子） composed of gold nanoparticles and viral（病毒的） particles, woven together and held in place by strands of DNA. The structure a distinctive mix of hard, metallic（金属的） nanoparticles... 阅读全文>>

日期：2011-01-28 Psychologists at Harvard University have found that infants less than one year old understand social dominance and use relative size（相对大小，相对量） to predict who will prevail when two individuals' goals conflict. The finding is presented this... 阅读全文>>

日期：2011-01-28 The type of bacteria that colonize the placenta（胎盘） during pregnancy could be associated with preterm birth and other developmental problems in newborns according to research published in the current issue of the online journal mBio. The fetal（... 阅读全文>>

日期：2011-01-28 In a previous study, rheumatoid arthritis ( RA风湿性关节炎) patients who failed to respond to methotrexate（甲氨蝶呤） were shown to experience positive results with fostamatinib disodium (R788), an oral spleen tyrosine kinase ( Syk酪氨酸激酶 ) inhi... 阅读全文>>

日期：2011-01-28 Last night, in his State of the Union address, President Barack Obama presented the nation with a vision of a better future through investment in education, infrastructure, and research. Recognizing the role that innovation has played in this nation... 阅读全文>>

日期：2011-01-28 The timing and dispersal（分散，传播） of modern humans out of Africa has been the source of long-standing debate, though most evidence has pointed to an exodus（大批的离去） along the Mediterranean Sea or along the Arabian coast approximately 60,00... 阅读全文>>

日期：2011-01-27 Scientists are reporting successful application of the technology used in home devices to clean jewelry, dentures（假牙） , and other items to make anticancer drugs like tamoxifen（三苯氧胺） and paclitaxel（紫杉醇） dissolve more easily in body flu... 阅读全文>>

日期：2011-01-27 Hotter summers may not be as catastrophic for the Greenland ice sheet as previously feared and may actually slow down the flow of glaciers, according to new research. A letter published in Nature on 27 January explains how increased melting in warme... 阅读全文>>

日期：2011-01-27 Highly- caffeinated（含咖啡因的） energy drinks even those containing no alcohol may pose a significant threat to individuals and public health, say researchers at the University of Maryland School of Public Health and Wake Forest University School... 阅读全文>>

日期：2011-01-27 Professor Richard Watt and his chemistry students suspected that a common protein could potentially react with sunlight and harvest its energy similar to what chlorophyll（叶绿素） does during photosynthesis（光合作用） . The story of how they prove... 阅读全文>>

日期：2011-01-27 The operating system (OS) is the backbone of your computer. If the OS is compromised（妥协，连累） , attackers can take over your computer or crash it. Now researchers at North Carolina State University have developed an efficient system that utiliz... 阅读全文>>