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  • 现有商业超声波设备不能有效驱赶床虱
    12-06

    Alternative means of controlling urban insect pests by using ultrasonic frequencies are available and marketed to the public. However, few of these de...

  • 从鱼鳍到腿的进化史
    12-06

    Vertebrates' transition to living on land, instead of only in water, represented a major event in the history of life. Now, researchers reporting ...

  • 洋葱能吸收有害重金属
    12-06

    Onion and garlic waste from the food industry could be used to mop up hazardous heavy metals, including arsenic(砷), cadmium(镉), iron, lead, mercury an...

  • 2030年可再生能源将可供应电网
    12-06

    Renewable energy could fully power a large electric grid 99.9 percent of the time by 2030 at costs comparable to today's electricity expenses, acc...

  • 豪猪的棘刺可用于研究新型粘合剂
    12-06

    Anyone unfortunate enough to encounter a porcupine's quills knows that once they go in, they are extremely difficult to remove. Researchers at MIT...

  • 与男友同住易使女性体重增加
    12-06

    Moving in with a boyfriend causes women to eat more unhealthily and put on weight.But the opposite is true for men, whose long-term health benefits wh...

  • 格陵兰冰原保存着大气酸化的证据
    12-06

    Research has shown a decrease in levels of the isotope nitrogen-15 in core samples from Greenland ice starting around the time of the Industrial Revol...

  • 没有重力 植物如何生长
    12-06

    It is well known that plant growth patterns are influenced by a variety of stimuli, gravity being one amongst many. On Earth plant roots exhibit chara...

  • 一种新药可降低骨髓移植手术的副作用
    12-06

    A new class of drugs reduced the risk of patients contracting a serious and often deadly side effect of lifesaving bone marrow transplant treatments, ...

  • 土壤中发现以抗生素为食的虫子
    12-06

    It's well known how bacteria exposed to antibiotics for long periods will find ways to resist the drugs -- by quickly pumping them out of their ce...

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