noise-凯发k8官网

  • 噪音无时无刻不在我们身边

    11-12-22 nine out of 10 city dwellers(居民) may have enough harmful noise exposure to risk hearing loss, and most of that exposure comes from leisure activities. historically, loud workplaces were blamed for harmful noise levels. but researchers at the uni...

  • 购买噪音大的玩具需谨慎

    11-12-18 while road rippers lightning rods, let's rock elmo and the i am t-pain musical microphone might be sought-after gifts this holiday season, parents should ensure that their children don't risk permanent hearing damage by misusing them. researchers fr...

  • 能量条件下随机噪音能加强信号输出

    11-12-07 scientists have shown the energy conditions, under which a weak signal supplied to a physical system emerges as a stronger signal at the output thanks to the presence of random noise (a process known as stochastic随机的 resonance), in a paper that h...

  • 为何有些人可以在任何情况下睡着

    10-08-11 ever wonder why some people can sleep through just about anything, while others get startled awake at each and every bump in the night? a new report in the august 10th issue of current biology, a cell press publication, offers some insight: sound sl...

  • 研究人员利用噪音探测景象

    10-04-05 a new technique for revealing images of hidden objects may one day allow pilots to peer(凝视,窥视) through fog and doctors to see more precisely into the human body without surgery. developed by princeton engineers, the method relies on the surpr...

  • 如何提高乳房x线照片精确度?增加噪音

    09-12-23 members of a syracuse university research team have shown that an obscure phenomenon called stochastic resonance扫描辐射仪 (sr) can improve the clarity of signals in systems such as radar, sonar声纳 and even radiography放射线照相 术, used in medical...

  • 医院病房噪音指数超标

    09-12-02 hospital wards across the nhs are breaking recommended noise limits, disturbing patients' sleep, well-being and recovery, experts say. 专家称,英国国民健康保险制度下的某些医院病房打破了推荐的噪音限制,打扰了病人的睡眠、健康和康复。 busy wards can be...

  • the advantage of noise 噪音的优点

    09-11-07 the advantage of noise wherever i drove my old car over 55 miles per hour ,it vibrated terribly, so i decided to sell it. my first customer wanted to buy the car, and i battled with my conscience over whether or not to tell him of the vehicle's prob...

  • seismic bangs 'block' whale calls 人类活动影响鲸鱼生存

    09-09-24 scientists have turned up new evidence showing that ocean noise can affect the communication of whales. 科学家发现新证据显示深海噪音可以影响鲸的沟通。 blue whales were hunted to the brink of extinction in the last century studying blue whales off th...

  • road noise link to blood pressure 公路噪音可能导致高血压

    09-09-10 people living near noisy roads are at greater risk of developing high blood pressure, a swedish study suggests. 一项瑞典调查显示,居住在嘈杂的路边的人患高血压的风险极大。 high blood pressure increases the risk of strokes and heart problems a lund un...

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