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SSS 2009-02-10

时间:2010-05-17 03:22来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute?

 

Here’s a novel potential public health measure against the flu—kick up the humidity. The cold, dry months of winter signal the start of flu season. But previous research found only a weak correlation1 between the spike2 in flu rates and the drop in relative humidity. Now researchers from Oregon State University say that's because it's absolute, not relative, humidity that counts. Their study is in the February 9th edition of the Proceedings3 of the National Academy of Sciences.

 

Relative humidity is a function of temperature. During the dry winter, relative humidity is low in a warm house but high in the cold outside. Absolute humidity, however, is simply the total amount of water in the air. The less water in the air, the longer the flu virus survives. And that leads to a greater chance of someone catching4 the bug5.

 

The scientists aren’t sure why humidity affects the flu virus survival. But they hope their discovery can be put to work. Emergency rooms and nursing homes, for example, could up their humidity during the winter. Maybe it’s time for a new health mantra: a sauna a day keeps the flu bug away.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Adam Hinterthuer.

 


点击收听单词发音收听单词发音  

1 correlation Rogzg     
n.相互关系,相关,关连
参考例句:
  • The second group of measurements had a high correlation with the first.第二组测量数据与第一组高度相关。
  • A high correlation exists in America between education and economic position.教育和经济地位在美国有极密切的关系。
2 spike lTNzO     
n.长钉,钉鞋;v.以大钉钉牢,使...失效
参考例句:
  • The spike pierced the receipts and held them in order.那个钉子穿过那些收据并使之按顺序排列。
  • They'll do anything to spike the guns of the opposition.他们会使出各种手段来挫败对手。
3 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
4 catching cwVztY     
adj.易传染的,有魅力的,迷人的,接住
参考例句:
  • There are those who think eczema is catching.有人就是认为湿疹会传染。
  • Enthusiasm is very catching.热情非常富有感染力。
5 bug 5skzf     
n.虫子;故障;窃听器;vt.纠缠;装窃听器
参考例句:
  • There is a bug in the system.系统出了故障。
  • The bird caught a bug on the fly.那鸟在飞行中捉住了一只昆虫。
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TAG标签:   SSS  humidity
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