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
adjustable ratio autotransformer
aduertiser
alimentary canal (or digestive tract)
amblychromatic
Ardil
argonin
arteria epigastricas
attack of insects
bat five hundred
bed-side
by-pass monochrome image
cal(l)iper
cervico-axial
chat-rooms
chopper control
columbus days
common comfreys
consumption network internal
cursor register
cyclonically
dendrodoris tuberculosa
discharging machine
discriminately
double linkage brake mechanism
eccentric hypertropy
economic health
Edward Durell Stone
electric wiring
energetic emission
Entemnotrochus
erres
Euler digraph
extension of homeomorphisms
family house
forced wind circulation
fuckmeat
furnace tool
geothermal water corrosion
hacksaw frame with plastic handle solid type
hear something from somebody
high purity cadmium
hofen
IFFT
kilo-volt-meter
kinemometering radar
magistratures
magnetic-deflection sensitive
maritime communication satellite
misbehavings
mishu
monsterlet
multiline telephone
multisized
n-acetyl-hydroxylamine
naturals
neurotransmitted
nonlinear elementary excitation
nonopinionated
oil dilution
on one's heels
overclockable
oxygen measurement set
papademetriou
paralbuminemia
paramagnetic mineral
pitch pipe
podzolized meadow soil
poorwill
quasimodular
rachitis foetalis micromelica
Rambouillet
recensors
resistance grounded
shipping cask
shocketh
shoot one's linen
silverdocs
simplex strainer
sinogracilis
Smilax nana
sneak
soils with a high alkali content
street plan
strongarmed
taken effect
teleheating
the full money
thermionically
time-sharing executive operation
tokutaro
tough steel
treherne
trillos
typical cases in observation
umbelled
unit fuel injection pump
urled
VMware ThinApp
warm fronts
way-back
Yakovleva
Yazgulyam