日期:2013-09-17 A group of international scientists including a Lawrence Livermore National Laboratory researcher have confirmed that life really could have come from out of this world. The team shock compressed an icy mixture, similar to what is found in comets, w... 阅读全文>> 日期:2013-09-17 Is your cable television on the fritz(发生故障) ? One explanation, scientists suspect, may be the weather -- the weather in space, that is. MIT researchers are investigating the effects of space weather -- such as solar flares, geomagnetic storms... 阅读全文>> 日期:2013-09-16 Smaller animals tend to perceive time in slow-motion, a new study has shown. 一项新研究显示,小动物对于时间的感知是慢动作式的。 This means that they can observe movement on a finer timescale than bigger creatures, allowing them to escape from larger... 阅读全文>> 日期:2013-09-16 Even though Danish students have equal access to education, their choice of studies is still influenced by social class. Young people from working class backgrounds are motivated by studies with a clear job profile and high income, while prestige an... 阅读全文>> 日期:2013-09-16 As the climate changes and oceans' acidity increases, tiny plankton(浮游生物) seem set to succeed. An international team of marine scientists has found that the smallest plankton groups thrive under elevated carbon dioxide (CO2) levels. This could... 阅读全文>> 日期:2013-09-16 In today's computers, moving data to and from main memory consumes so much time and energy that microprocessors have their own small, high-speed memory banks, known as caches, which store frequently used data. Traditionally, managing the caches has... 阅读全文>> 日期:2013-09-16 What if you could reach through a microscope to touch and feel the microscopic structures under the lens? In a breakthrough that may usher in(领进,引进) a new era in the exploration of the worlds that are a million times smaller than human beings... 阅读全文>> 日期:2013-09-16 Two researchers at UCL Computer Science and the University of Gdansk present a new method for determining the amount of entanglement -- a quantum phenomenon connecting two remote partners, and crucial for quantum technology -- within part of a one-d... 阅读全文>> 日期:2013-09-13 Researchers at the Pediatric Diabetes Research Center (PDRC) at the University of California, San Diego School of Medicine have shown that the pancreatic(胰腺的) protein Nkx6.1 -- a beta-cell enriched transcription factor -- is essential to mainta... 阅读全文>> 日期:2013-09-13 Scientists and conservators have developed a new method to diagnose painting canvases(帆布) from the back, without disturbing a single fibre, to see if they can withstand the stress of handling and travel. Using the method -- which is similar to t... 阅读全文>> 日期:2013-09-13 Designers of social robots, take note. Bring your dog to the lab next time you test a prototype, and watch how your pet interacts with it. You might just learn a thing or two that could help you fine-tune future designs. So says Gabriella Lakatos of... 阅读全文>> 日期:2013-09-13 Our current pledges to reduce greenhouse gas emissions, which are projected to set the global mean temperature increase at around 3.5C above pre-industrial levels, will expose 668 million people worldwide to new or aggravated water scarcity. This is... 阅读全文>> 日期:2013-09-13 A new study led by Adelaide researchers has estimated, for the first time, the rates of evolution during the Cambrian explosion when most modern animal groups appeared between 540 and 520 million years ago. The findings, published online today in th... 阅读全文>> 日期:2013-09-12 Biologists and physicists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, found out that not all of the Southern Hemisphere humpback whales (Megaptera novaeangliae) migrate towards the equator(赤道) at the end of... 阅读全文>> 日期:2013-09-12 Many climate studies have predicted that tree species will respond to global warming by migrating via seed dispersal to cooler climates. But a new study of 65 different species in 31 eastern states finds evidence of a different, unexpected response.... 阅读全文>> 日期:2013-09-12 It happens to all kinds of flat, disk galaxies -- whether they're big, little, isolated or crowded in a cluster. They all grow out of their irregular, clumped appearance and their older stars take on the same smooth look, predictably fading from a b... 阅读全文>> 日期:2013-09-12 An HIV/AIDS vaccine candidate developed by researchers at Oregon Health Science University appears to have the ability to completely clear an AIDS-causing virus from the body. The promising vaccine candidate is being developed at OHSU's Vaccine and... 阅读全文>> 日期:2013-09-12 A UNSW-led team of astronomers has begun to map the location of the most massive and mysterious objects in our galaxy -- the giant gas clouds where new stars are born. Using a telescope at Coonabarabran that narrowly escaped devastation(毁坏) in a... 阅读全文>> 日期:2013-09-12 Spider venoms are usually toxic when injected into prey, but a new protein discovered in the venom(毒液) of Australian tarantulas(狼蛛) can also kill prey insects that consume the venom orally. The protein is strongly insecticidal to the cotton... 阅读全文>> 日期:2013-09-11 In summer excavations at the foot of the Temple Mount, Hebrew University of Jerusalem archaeologist Dr. Eilat Mazar made a stunning discovery: two bundles of treasure containing thirty-six gold coins, gold and silver jewelry, and a gold medallion(... 阅读全文>> |
|