日期:2010-07-20 An international team including Empa researcher Francis Schwarze has sequenced the genome of the common split gill(沟壑,溪流) mushroom, Schizophyllum(裂褶菌属) commune, a widely distributed fungus which grows on and decomposes(分解,腐烂) woo... 阅读全文>> 日期:2010-07-20 A foreign accent undermines(危害,破坏) a person's credibility in ways that the speaker and the listener don't consciously(自觉地,有意识地) realize, new research at the University of Chicago shows. Because an accent makes a person harder to und... 阅读全文>> 日期:2010-07-19 Chemists from New York University and Russia's St. Petersburg State University have created crystals that can twist and untwist, pointing to a much more varied process of crystal growth than previously thought. Their work, which appears in the lates... 阅读全文>> 日期:2010-07-19 In a report published in the July 2010 issue of the American Society for Clinical Oncology(肿瘤学) Post, new recommendations on the use of the drug cetuximab(西妥昔单抗) have been issued after officials halted enrollment in a phase III clinical... 阅读全文>> 日期:2010-07-19 Imagine if your brain lost its working memory the ability to hold and manipulate information in your mind's eye(想象,心眼) . That's the plight(困境,境况) faced by millions of people with neurofibromatosis(多发性神经纤维瘤) type 1, or NF1. Th... 阅读全文>> 日期:2010-07-19 In the battle between insect predators(捕食者) and their prey, chemical signals called kairomones(利它素) serve as an early-warning system. Pervasively emitted by the predators, the compounds are detected by their prey, and can even trigger adap... 阅读全文>> 日期:2010-07-16 In a pioneering use of computed tomography (CT) scans, scientists at Woods Hole Oceanographic Institution (WHOI) have discovered that carbon dioxide (CO2)-induced global warming is in the process of killing off a major coral species in the Red Sea.... 阅读全文>> 日期:2010-07-16 Armed with dart guns and medical pellets(芯块,小球) , Agricultural Research Service (ARS) scientists are vaccinating(接种疫苗) bison(北美野牛) in and around Yellowstone National Park against brucellosis(普鲁氏菌病) . Researchers from the AR... 阅读全文>> 日期:2010-07-16 How a retrovirus(逆转录酶病毒) , like HIV, reproduces and assembles new viruses is different than previously thought, according to Penn State College of Medicine researchers. Understanding the steps a virus takes for assembly could allow developme... 阅读全文>> 日期:2010-07-16 You can teach an old drug new chemotherapy(化学疗法) tricks. Northwestern University researchers took a drug therapy proven for blood cancers but ineffective against solid tumors, packaged it with nanotechnology and got it to combat an aggressive... 阅读全文>> 日期:2010-07-16 In all organisms, RNA synthesis is carried out by proteins known as RNA polymerases(聚合酶) (RNAPs) that transcribe the genetic information from DNA in a highly-regulated, multi-stage process. RNAP is the key enzyme involved in creating an equival... 阅读全文>> 日期:2010-07-16 The discovery of a remarkable 15-million-year-old Australian fossil limestone cave(石灰岩洞) packed with even older animal bones has revealed almost the entire life cycle of a large prehistoric(史前的,陈旧的) marsupial(有袋类动物) , from suck... 阅读全文>> 日期:2010-07-16 Astrocytes(星形胶质细胞) - brain cells named after their characteristic star-shape and previously thought to act only as the 'glue' between neurons(神经原) , have a central role in the regulation of breathing, according to scientists. The findin... 阅读全文>> 日期:2010-07-16 Revealing the science behind the homespun(朴素的,手织的) advice, a team of researchers at Worcester Polytechnic Institute (WPI) has identified and measured the molecular forces that enable cranberry(蔓越橘) juice to fight off urinary tract infe... 阅读全文>> 日期:2010-07-15 Conversations between students and teachers, patients and doctors, and other groups of lay people(外行,俗人) and experts, such as users and helpdesk staff, can suffer because of the difference in knowledge levels of each party in the conversation... 阅读全文>> 日期:2010-07-15 Speakers made from carbon nanotube sheets that are a fraction of(一部分) the width of a human hair can both generate sound and cancel out(取消,抵消) noise -- properties ideal for submarine sonar to probe the ocean depths and make subs invisible... 阅读全文>> 日期:2010-07-15 Our observations show a disc surrounding an embryonic(胚胎的) young, massive star, which is now fully formed, says Stefan Kraus, who led the study. One can say that the baby is about to hatch(孵化) ! The team of astronomers looked at an object k... 阅读全文>> 日期:2010-07-15 In cells, as in cities, disposing of garbage and recycling anything that can be reused is an essential service. In both city and cell, health problems can arise when the process breaks down. New research by University of Michigan cell biologist Haox... 阅读全文>> 日期:2010-07-14 Scientists studying ancient species migration believe northern birds had the ability to colonise continents that southern species lacked. The research, published in Ecography(描述生态学) , reveals how the ancient 'land bridge' of Panama, which fir... 阅读全文>> 日期:2010-07-14 Don't scoff at(嘲笑,蔑视) those lucky rabbit feet. New research shows that having some kind of lucky token(象征,记号) can actually improve your performance by increasing your self-confidence. I watch a lot of sports, and I read about sports, a... 阅读全文>> |
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