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SSS 2009-04-15

时间:2010-05-17 08:00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 Cynthia Graber. This will just take a minute.

It's April 15th. Like many people around the country, you might be feeling your blood pressure rise as you deal with everyone's favorite activity—filing taxes. Now there's good news if you want to know how bad your heart is suffering from the stress: M.I.T. researchers have built an easily wearable blood pressure sensor1. It works around the clock to provide an accurate 24-hour read of blood pressure.

Some people have so-called white coat hypertension—their blood pressure spikes2 in the doctor's office. Also, there are natural changes in blood pressure over a day's cycle, and a one-time reading won't catch that.

The device doesn't use a cuff3, like the kind that cuts off the circulation in your arm at the doctor’s office. It sits over the wrist and index finger and measures the pulse at two locations, checking the velocity4 of the blood flow. The information gathered could assist doctors in figuring out the best medication, or even in telling a patient when during the day to take that medicine—or a deep breath. The device should be available to the public in a few years. In the meantime, many happy returns.

 

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 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。
2 spikes jhXzrc     
n.穗( spike的名词复数 );跑鞋;(防滑)鞋钉;尖状物v.加烈酒于( spike的第三人称单数 );偷偷地给某人的饮料加入(更多)酒精( 或药物);把尖状物钉入;打乱某人的计划
参考例句:
  • a row of iron spikes on a wall 墙头的一排尖铁
  • There is a row of spikes on top of the prison wall to prevent the prisoners escaping. 监狱墙头装有一排尖钉,以防犯人逃跑。 来自《简明英汉词典》
3 cuff 4YUzL     
n.袖口;手铐;护腕;vt.用手铐铐;上袖口
参考例句:
  • She hoped they wouldn't cuff her hands behind her back.她希望他们不要把她反铐起来。
  • Would you please draw together the snag in my cuff?请你把我袖口上的裂口缝上好吗?
4 velocity rLYzx     
n.速度,速率
参考例句:
  • Einstein's theory links energy with mass and velocity of light.爱因斯坦的理论把能量同质量和光速联系起来。
  • The velocity of light is about 300000 kilometres per second.光速约为每秒300000公里。
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TAG标签:   SSS  wearable
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