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SSS 2008-06-10

时间:2010-05-14 02:28来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute.

It might look and even feel like paper, but a new material created by scientists at MIT is designed to be an oil spill super-absorber. This technology debuted1 in a recent issue of Nature Biotechnology. Scientists designed a mesh2 of nanowires made of potassium manganese oxide3. The mesh is dried in much the same manner as cellulose is treated to make paper. Between the nanowires are tiny pores that act like capillaries4 to absorb liquid, again, like a paper towel. But the wires have a coating that repels5 water. In fact, researchers say this material can be left in water for a month and, when taken out, will still be dry. But oil can seep6 into those pores. The nanopaper can absorb twenty times its weight in oil. And it can be reused. Potassium manganese oxide is stable at high temperatures. So to clean it, researchers heat it above the boiling point of oil. The oil evaporates and the paper is clean again. About 200,000 tons of oil have polluted waters around the world in this decade alone. Scientists say this new nano oil cleaner could help sop7 up inevitable8 future spills.

Thanks for the minute for Scientific American's 60-Second Science, I am Cynthia Graber.


点击收听单词发音收听单词发音  

1 debuted b3e2d85131439fe8678f6628fda0ec90     
初次表演,初次登台(debut的过去式与过去分词形式)
参考例句:
  • In late 2003 a full-size SUV, the Pathfinder Armada, debuted. 2003年末,全尺寸SUV的探路者无敌舰队,推出。
  • The album debuted at number two and quickly went platinum. 专辑一亮相就荣登排行榜第二名,很快就取得了白金销量。
2 mesh cC1xJ     
n.网孔,网丝,陷阱;vt.以网捕捉,啮合,匹配;vi.适合; [计算机]网络
参考例句:
  • Their characters just don't mesh.他们的性格就是合不来。
  • This is the net having half inch mesh.这是有半英寸网眼的网。
3 oxide K4dz8     
n.氧化物
参考例句:
  • Oxide is usually seen in our daily life.在我们的日常生活中氧化物很常见。
  • How can you get rid of this oxide coating?你们该怎样除去这些氧化皮?
4 capillaries d0d7ccc2f58ea09ec26e13a0d6ffd34a     
毛细管,毛细血管( capillary的名词复数 )
参考例句:
  • The blood flows from the capillaries back into the veins. 血从毛细血管流回静脉。
  • While Joe sleeps, a large percentage of his capillaries are inactive. 当乔睡觉时,他的毛细血管大部分是不工作的。
5 repels c79624af62761556bec1c2fc744ee1ae     
v.击退( repel的第三人称单数 );使厌恶;排斥;推开
参考例句:
  • His manner repels me. 他的举止让我厌恶。 来自《简明英汉词典》
  • Her callous attitude repels me. 她冷酷无情的态度引起我的反感。 来自《简明英汉词典》
6 seep rDSzK     
v.渗出,渗漏;n.渗漏,小泉,水(油)坑
参考例句:
  • My anger began to seep away.我的怒火开始消下去了。
  • If meteoric water does not evaporate or run overland,it may seep directly into the ground.如果雨水不从陆地蒸发和流走的话,就可能直接渗入地下。
7 sop WFfyt     
n.湿透的东西,懦夫;v.浸,泡,浸湿
参考例句:
  • I used a mop to sop up the spilled water.我用拖把把泼出的水擦干。
  • The playground was a mere sop.操场很湿。
8 inevitable 5xcyq     
adj.不可避免的,必然发生的
参考例句:
  • Mary was wearing her inevitable large hat.玛丽戴着她总是戴的那顶大帽子。
  • The defeat had inevitable consequences for British policy.战败对英国政策不可避免地产生了影响。
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TAG标签:   SSS  manganese
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