日期：2014-09-10 Over 100 years since the Nobel Prize-winning father and son team Sir William and Sir Lawrence Bragg pioneered the use of X-rays to determine crystal structure, University of Adelaide researchers have made significant new advances in the field. Publi... 阅读全文>>

日期：2014-09-10 Around the world, there is more salty groundwater than fresh, drinkable groundwater. For example, 60 percent of India is underlain by salty water -- and much of that area is not served by an electric grid that could run conventional reverse-osmosis... 阅读全文>>

日期：2014-09-10 One challenge in killing off harmful bacteria is that many of them develop a resistance to antibiotics. Researchers at the University of Rochester are targeting the formation of the protein-making machinery in those cells as a possible alternate way... 阅读全文>>

日期：2014-09-10 In the typical textbook picture, volcanoes, such as those that are forming the Hawaiian islands, erupt when magma gushes out as narrow jets from deep inside Earth. But that picture is wrong, according to a new study from researchers at Caltech and t... 阅读全文>>

日期：2014-09-10 For the first time, researchers have been able to open a kind of window into the inner workings of a lithium-ion battery. Using a neutron beam, chemists and engineers at The Ohio State University were able to track the flow of lithium atoms into and... 阅读全文>>

日期：2014-09-10 Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probabl... 阅读全文>>

日期：2014-09-10 Ohio University paleontologists have identified a new species of titanosaurian, a member of the large-bodied sauropods that thrived during the final period of the dinosaur age, in Tanzania. Although many fossils of titanosaurians have been discovere... 阅读全文>>

日期：2014-09-06 Soy supplementation alters expression of genes associated with breast cancer, raising concerns that soy could have adverse effects in breast cancer, according to a new study published September 4 in the JNCI: Journal of the National Cancer Institute... 阅读全文>>

日期：2014-09-06 Faced with climate change and diminishing opportunities to expand productive agricultural acreage, the world needs to invest in a global research agenda addressing farm and food systems, landscape and regional issues and institutional and policy mat... 阅读全文>>

日期：2014-09-06 Postmenopausal women who eat foods higher in potassium are less likely to have strokes and die than women who eat less potassium-rich foods, according to new research in the American Heart Association's journal Stroke. Previous studies have shown th... 阅读全文>>

日期：2014-09-06 If Americans altered their menus to conform to federal dietary recommendations, emissions of heat-trapping greenhouse gases tied to agricultural production could increase significantly, according to a new study by University of Michigan researchers.... 阅读全文>>

日期：2014-09-06 The number of California blue whales has rebounded to near historical levels, according to new research by the University of Washington, and while the number of blue whales struck by ships is likely above allowable U.S. limits, such strikes do not i... 阅读全文>>

日期：2014-09-05 A new study of three ice cores from Greenland documents the warming of the large ice sheet at the end of the last ice age -- resolving a long-standing paradox over when that warming occurred. Large ice sheets covered North America and northern Europ... 阅读全文>>

日期：2014-09-05 Research from North Carolina State University shows that a type of modified titania, or titanium dioxide, holds promise as an electrical insulator for superconducting magnets, allowing heat to dissipate while preserving the electrical paths along wh... 阅读全文>>

日期：2014-09-05 A collaborative team of scientists including biochemist Peter Chien at the University of Massachusetts Amherst has reconstructed how bacteria tightly control their growth and division, a process known as the cell cycle, by specifically destroying ke... 阅读全文>>

日期：2014-09-05 In one year, India's ozone pollution damaged millions of tons of the country's major crops, causing losses of more than a billion dollars and destroying enough food to feed tens of millions of people living below the poverty line. These are findings... 阅读全文>>

日期：2014-09-05 Customer experience matters more when the economy is doing well than when it is doing poorly, according to a new study in the Articles in Advance section of Marketing Science, a journal of the Institute for Operations Research and the Management Sci... 阅读全文>>

日期：2014-09-05 Archerfish hunt by shooting jets of water at unsuspecting insects, spiders, or even small lizards on leaves or twigs above, knocking them into the water below before gobbling them up. Now, a study in the Cell Press journal Current Biology on Septemb... 阅读全文>>

日期：2014-09-04 Approximately every 11 years, the sun undergoes a complete personality change from quiet and calm to violently active. The height of the sun's activity, known as solar maximum, is a time of numerous sunspots, punctuated with profound eruptions that... 阅读全文>>

日期：2014-09-04 About 50 years ago, electron microscopy revealed the presence of tiny blob-like structures that form inside cells, move around and disappear. But scientists still don't know what they do -- even though these shifting cloud-like collections of protei... 阅读全文>>