日期:2012-04-27 A new study has shown that adding boron-nitride(氮化硼) nanotubes to the surface of cancer cells can double the effectiveness of Irreversible Electroporation, a minimally invasive treatment for soft tissue tumors in the liver, lung, prostate, head... 阅读全文>>

日期:2012-04-27 Blueberries and strawberries, which are high in flavonoids(黄酮类) , appear to reduce cognitive decline in older adults according to a new study recently published in Annals of Neurology, a journal of the American Neurological Association and Chil... 阅读全文>>

日期:2012-04-27 One of the most debated developments in human history is the transition from hunter-gatherer to agricultural societies. A recent issue of Science presents the genetic findings of a Swedish-Danish research team, which show that agriculture spread to... 阅读全文>>

日期:2012-04-27 If Pygmies are known for one trait, it is their short stature: Pygmy men stand just 4'11 on average. But the reason why these groups are so short and neighboring groups are not remains unclear. Scientists have proposed various theories based on natu... 阅读全文>>

日期:2012-04-26 While working on a research sailboat gliding over glassy seas in the Pacific Ocean, oceanographer Giora Proskurowski noticed something new: The water was littered with confetti(五彩纸屑) -size pieces of plastic debris, until the moment the wind pi... 阅读全文>>

日期:2012-04-26 Entomologists at the University of California, Riverside have a proof of concept that selenium(硒) , a nonmetal chemical element, can disrupt the foraging behavior and survival of honey bees. Selenium in very low concentrations is necessary for th... 阅读全文>>

日期:2012-04-26 The fungal infection that has killed a record number of amphibians worldwide leads to deadly dehydration(脱水) in frogs in the wild, according to a new study by University of California, Berkeley and San Francisco State University researchers. Hig... 阅读全文>>

日期:2012-04-26 The first-known camera trap photos of an Amur leopard in China have recently been taken by protected area staff in Hunchun Amur Tiger National Nature Reserve in Jilin Province according to the Wildlife Conservation Society. Coupled with Jilin Provin... 阅读全文>>

日期:2012-04-26 An international team of scientists led by British Antarctic Survey (BAS) has established that warm ocean currents are the dominant cause of recent ice loss from Antarctica. New techniques have been used to differentiate, for the first time, between... 阅读全文>>

日期:2012-04-25 A research team presented findings that they say may finally explain the link between alcohol consumption and breast cancer. Cells have different mechanisms to remove toxic substances, such as ethanol(乙醇) , the chemical name for alcohol, that re... 阅读全文>>

日期:2012-04-25 An international team of scientists has uncovered the first evidence of a non-human species cultivating plants for use other than as food. Instead, bowerbirds(园丁鸟) propagate fruits used as decorations in their sexual displays. The researchers d... 阅读全文>>

日期:2012-04-25 A Washington State University astrobiologist is leading a group of 20 scientists in calling for a mission to Mars with a strong and comprehensive life detection component. At the heart of their proposal is a small fleet of sensor packages that can p... 阅读全文>>

日期:2012-04-25 Children who have experienced violence might really be older than their years. The DNA of 10-year-olds who experienced violence in their young lives has been found to show wear and tear(磨损) normally associated with aging, a Duke University study... 阅读全文>>

日期:2012-04-25 One of the greatest mysterious in cellular biology has been given a new twist thanks to findings reported in Science. Researchers at the RIKEN Brain Science Institute show that prions(小蛋白粒) , proteins that transmit heritable information withou... 阅读全文>>

日期:2012-04-25 Queen Mary scientists working with images from NASA's Cassini spacecraft have discovered strange half-mile-sized objects punching through parts of Saturn's F ring, leaving glittering trails behind them. These trails in the rings, which scientists ar... 阅读全文>>

日期:2012-04-23 Carnivory is behind the evolutionary success of humankind. When early humans started to eat meat and eventually hunt, their new, higher-quality diet meant that women could wean(使断奶) their children earlier. Women could then give birth to more ch... 阅读全文>>

日期:2012-04-20 Scientists have discovered proof that the evolution of intelligence and larger brain sizes can be driven by cooperation and teamwork, shedding new light on the origins of what it means to be human. The study appears online in the journal Proceedings... 阅读全文>>

日期:2012-04-20 A team of researchers from Taiwan and the University of California, Berkeley, has harnessed nanodots to create a new electronic memory technology that can write and erase data 10-100 times faster than today's mainstream charge-storage memory product... 阅读全文>>

日期:2012-04-20 A new genre of electric power-generating stations could supply electricity for more than a half billion people by tapping just one-tenth of the global potential of a little-known energy source that exists where rivers flow into the ocean, a new anal... 阅读全文>>

日期:2012-04-20 Researchers may have found a way to protect us against otherwise deadly chemical attacks, such as the subway sarin incident in Tokyo that left thirteen people dead and thousands more injured or with temporary vision problems. The method is based on... 阅读全文>>

  • 首页
  • 上一页
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 下一页
  • 末页
  • 3857688