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SSS 2011-03-08

时间:2011-04-27 03:51来源:互联网 提供网友:geologyforget   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 Cynthia Graber. This will just take a minute.

Wine can help keep conversation flowing at a dinner party. And now it looks like that wine may aid in materials science as well. Japanese researchers discovered that hot alcoholic1 beverages2 induce superconductivity in iron-based compounds.

These compounds can become superconducting by being exposed to oxygen, but it takes months. Scientists have been searching for a way to speed that up. So researchers at Japan’s National Institute for Materials Science decided3 to test the reaction with alcohol.

They put samples of the compounds in red and white wines, beer, sake, shochu— another Japanese alcohol—and whiskey. There were controls of water-ethanol mixtures.

The samples were heated to 70 degrees Celsius4 for 24 hours. The water ethanol mixtures didn’t have much of an effect, but the drinks did induce superconductivity—red wine best of all.

The scientists speculate there may be particular elements in red wine that replace elements in the iron-based compounds. It may be that wine speeds up the supply of oxygen into the samples. The researchers say the next step is to analyze5 the beverages to figure out just what’s inducing superconductivity. And maybe sneak6 a sip7 in the process.

Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber.


点击收听单词发音收听单词发音  

1 alcoholic rx7zC     
adj.(含)酒精的,由酒精引起的;n.酗酒者
参考例句:
  • The alcoholic strength of brandy far exceeds that of wine.白兰地的酒精浓度远远超过葡萄酒。
  • Alcoholic drinks act as a poison to a child.酒精饮料对小孩犹如毒药。
2 beverages eb693dc3e09666bb339be2c419d0478e     
n.饮料( beverage的名词复数 )
参考例句:
  • laws governing the sale of alcoholic beverages 控制酒类销售的法规
  • regulations governing the sale of alcoholic beverages 含酒精饮料的销售管理条例
3 decided lvqzZd     
adj.决定了的,坚决的;明显的,明确的
参考例句:
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
4 Celsius AXRzl     
adj.摄氏温度计的,摄氏的
参考例句:
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
5 analyze RwUzm     
vt.分析,解析 (=analyse)
参考例句:
  • We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
  • The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
6 sneak vr2yk     
vt.潜行(隐藏,填石缝);偷偷摸摸做;n.潜行;adj.暗中进行
参考例句:
  • He raised his spear and sneak forward.他提起长矛悄悄地前进。
  • I saw him sneak away from us.我看见他悄悄地从我们身边走开。
7 sip Oxawv     
v.小口地喝,抿,呷;n.一小口的量
参考例句:
  • She took a sip of the cocktail.她啜饮一口鸡尾酒。
  • Elizabeth took a sip of the hot coffee.伊丽莎白呷了一口热咖啡。
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