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科学美国人60秒 SSS 2014-08-20

时间:2014-09-24 08:17来源:互联网 提供网友:gmeng   字体: [ ]
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 Do you like working up a sweat? Or do you feel like maybe sweat should work for you? Well, hold on to your sudoriferous glands1. Because researchers have designed a device that could someday produce power from your perspiration2. The schvitzy scheme was presented at the annual meeting of the American Chemical Society in San Francisco. 

 
Strenuous3 exercise generates lactate—the molecule4 that makes overworked muscles burn. Athletes sometimes evaluate their fitness by checking the lactate levels in their blood. To reduce blood draws, researchers came up with a monitor that could measure the lactate in sweat. The device they designed strips electrons from lactate, which creates a small electric current. The strength of the current reveals the amount of lactate.
 
To test the system, 10 volunteers wore the arm-patch sensor5 while they rode a stationary6 bike. And the device recorded the current they delivered as they dripped.
 
Then the researchers thought, what if they could tap into this energy to develop a sort of sweat-powered “bio battery?” Their proof-of-concept setup topped out at only about 4 microWatts of juice—not even enough to run a watch. But with better electronics, exercising in the future could make dirty clothes and some clean energy. 
 
—Karen Hopkin

点击收听单词发音收听单词发音  

1 glands 82573e247a54d4ca7619fbc1a5141d80     
n.腺( gland的名词复数 )
参考例句:
  • a snake's poison glands 蛇的毒腺
  • the sebaceous glands in the skin 皮脂腺
2 perspiration c3UzD     
n.汗水;出汗
参考例句:
  • It is so hot that my clothes are wet with perspiration.天太热了,我的衣服被汗水湿透了。
  • The perspiration was running down my back.汗从我背上淌下来。
3 strenuous 8GvzN     
adj.奋发的,使劲的;紧张的;热烈的,狂热的
参考例句:
  • He made strenuous efforts to improve his reading. 他奋发努力提高阅读能力。
  • You may run yourself down in this strenuous week.你可能会在这紧张的一周透支掉自己。
4 molecule Y6Tzn     
n.分子,克分子
参考例句:
  • A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
  • This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
5 sensor sz7we     
n.传感器,探测设备,感觉器(官)
参考例句:
  • The temperature sensor is enclosed in a protective well.温度传感器密封在保护套管中。
  • He plugged the sensor into a outlet.他把传感器插进电源插座。
6 stationary CuAwc     
adj.固定的,静止不动的
参考例句:
  • A stationary object is easy to be aimed at.一个静止不动的物体是容易瞄准的。
  • Wait until the bus is stationary before you get off.你要等公共汽车停稳了再下车。
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TAG标签:   科学美国人60秒  SSS  英语听力
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