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对照剂有一定的实际效果
2023-12-06For most of us, the "placebo effect" is synonymous with(与同义) the power of positive thinking; it works because you believe you're taking ...
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杰弗逊实验室创造出罕见颜色的激光
2023-12-06December is a time for twinkling lights, and scientists at the Department of Energy's Thomas Jefferson National Accelerator Facility are deliverin...
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更新世时母猛犸象哺乳时间加长
2023-12-06New research from The University of Western Ontario leads investigators to believe that woolly mammoths(猛犸象,长毛象) living north of the Arctic Circle dur...
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非洲现存两个品种的大象
2023-12-06Contrary to the belief of many scientists (as well as many members of the public), new research confirms that Africa has two—not one—speci...
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乙酰胆碱可提高肌肉收缩力
2023-12-06Researchers at Vanderbilt University have "engineered" a mouse that can run on a treadmill twice as long as a normal mouse by increasing its...
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那利亚纳乌鸦可能在75年内灭绝
2023-12-06Researchers from the University of Washington say the Mariana crow(乌鸦) , a forest crow living on Rota Island in the western Pacific Ocean, will go ext...
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江河水道中富含温室气体
2023-12-06Nitrous oxide(一氧化二氮) , a potent greenhouse gas, has increased by more than 20 percent over the last century, and nitrogen in waterways is fueling part...
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鼻塞可能是重度哮喘的前兆
2023-12-06Nasal congestion(鼻塞,鼻充血) can be a sign of severe asthma(哮喘) , which means that healthcare professionals should be extra vigilant(警惕的) when it comes to...
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晕动病在虚拟世界同样存在
2023-12-06Clemson University psychologist Eric Muth sees motion sickness as potential fallout(原子尘) from high-end technology that once was limited to the commerc...
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新技术可使室温下操作等离子激光
2023-12-06Researchers at the University of California, Berkeley, have developed a new technique that allows plasmon(胞质基因,等离子体振子) lasers to operate at room tempe...