时间:2018-12-24 作者:英语课 分类:Scientific American(七)月


英语课

This is Scientific American 60-Second Science. I'm Cindey Graber. This will just take a minute.


 


When TV sets die, they usually end up incinerated or in landfills. But now researchers from England’s University of York believe they’ve found a valuable use for told TVs—in medicine.


Liquid crystal displays—or LCDs—are becoming increasingly popular. One key component 1 of the display is a compound called polyvinyl-alcohol, or PVA. The researchers recovered the PVA from television screens. They then heated the material in water with microwaves, cooled it back down and washed it with ethanol. That process creates a new material called expanded PVA. And our bodies fail to mount an immune response against expanded PVA, so it’s a good substance for biomedical applications.


It’s porous 2 with a large surface area, so the expanded PVA is a good material for cellular 3 scaffolding that can be implanted and on which tissues can regenerate 4. It can also be used for pills and dressings 5 that deliver drugs. The research was published in the journal Green Chemistry.


The study authors say billions of televisions with LCD technology are nearing the end of their lives. Which means that medical dramas that once played out on the TVs may soon come from the TVs.


 


Thanks for the minute. For Scientific American 60-Second Science, I'm Cindey Graber.

 



1 component
n.组成部分,成分,元件;adj.组成的,合成的
  • Each component is carefully checked before assembly.每个零件在装配前都经过仔细检查。
  • Blade and handle are the component parts of a knife.刀身和刀柄是一把刀的组成部分。
2 porous
adj.可渗透的,多孔的
  • He added sand to the soil to make it more porous.他往土里掺沙子以提高渗水性能。
  • The shell has to be slightly porous to enable oxygen to pass in.外壳不得不有些细小的孔以便能使氧气通过。
3 cellular
adj.移动的;细胞的,由细胞组成的
  • She has a cellular telephone in her car.她的汽车里有一部无线通讯电话机。
  • Many people use cellular materials as sensitive elements in hygrometers.很多人用蜂窝状的材料作为测量温度的传感元件。
4 regenerate
vt.使恢复,使新生;vi.恢复,再生;adj.恢复的
  • Their aim is to regenerate British industry.他们的目的是复兴英国的工业。
  • Although it is not easy,you have the power to regenerate your life.尽管这不容易,但你有使生活重获新生的能力。
5 dressings
n.敷料剂;穿衣( dressing的名词复数 );穿戴;(拌制色拉的)调料;(保护伤口的)敷料
  • He always made sure that any cuts were protected by sterile dressings. 他总是坚持要用无菌纱布包扎伤口。 来自辞典例句
  • I waked the orderly and he poured mineral water on the dressings. 我喊醒勤务,他在我的绷带上倒了些矿质水。 来自辞典例句
标签: SSS response
学英语单词
abbreviated Doolittle method
agkistrodon acutus
allochthonous sediment
anticontractile
array mbiras
associate dean
at abroad
atmospheric diving suit
audio-gram
auxiliary fuel pump
basic indicator
bearded Milanese
bell rope
bilprotein
cantering
carbarsone
cardinalic
Carmo do Rio Claro
chorussing
coastal zone resources
coefficient of retardance
color graphic work station
Common Intermediate Format
compressor exhauster unit
consolido meter
constre
credit underwriting
deltaeta
egged
erythrogenic acid
exhaust conditioning box
finder adapter
fire suppression system
fix someone's little red wagon
Fourier modulus
french republics
fuel spray nozzle
game on-demand
ghost protocol
grottiness
heating tongs
heggies
HPWT
identification papers
inside gauge
International Consultative Committee
irrigation frequency
kralik
law of stream gradient
lie-down
london depositary receipt
lustre-coating agent
macrolevels
made the trial
MAPL
maximum working value
mcsween
methemalbuminemia
Mizoguchi Kenji
moments of truncated distribution
ninet
nonadic
nonmicrobial
oligozoospermias
organic insecticide
over-thoughtful
pahute mesa
paikoff
papait
PARRIDAE
phycobilin
piezoresistance transduction element
pince
pondexter
posterior intermediate sulcus
primitive spleen
pseudotrunks
punch operator
reduction of output
reductive genioplasty
sarcoma of penis
Schkeuditz
sequential memory mode
sermatech
share alike
sir sarvepalli radhakrishnans
solder clad copper
spels
split Abelian subgroup
spun-bonded non-woven fabric
subfactorials
system designing
telescopic star
temperature measuring element
textwar
tutorial subsystem
unpilled
unregardful
ventralizes
Walgaon
within measure
Xiaojun