时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? That’s what researchers led by Aydogan Ozcan at U.C.L.A. have developed. Ozcan recently won an NSF (National Science Foundation) Early Career Development award for his work


Normal microscopes image cells themselves. But Ozcan’s team is imaging their shadows. Tissue cells and bacteria are semi-transparent—light penetrating 1 through cells causes shadings and reveals texture 2. Ozcan uses an LED as his light source, creating cellular 3 shadows. An algorithm turns those shadows into an image of the cells.


Millions of people in the developing world suffer because they’re misdiagnosed, or because simple diseases are missed. With this system, a blood sample can be loaded into a small imaging device attached to a cell phone. The cellular image generated from the sample can be transmitted to a central computer in a nearby hospital. The image can be assessed for disease, with the resulting diagnosis 4 sent back to the field in just minutes. Tests of the device begin in Africa this summer

 



adj.(声音)响亮的,尖锐的adj.(气味)刺激的adj.(思想)敏锐的,有洞察力的
  • He had an extraordinarily penetrating gaze. 他的目光有股异乎寻常的洞察力。
  • He examined the man with a penetrating gaze. 他以锐利的目光仔细观察了那个人。
n.(织物)质地;(材料)构造;结构;肌理
  • We could feel the smooth texture of silk.我们能感觉出丝绸的光滑质地。
  • Her skin has a fine texture.她的皮肤细腻。
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。
n.诊断,诊断结果,调查分析,判断
  • His symptoms gave no obvious pointer to a possible diagnosis.他的症状无法作出明确的诊断。
  • The engineer made a complete diagnosis of the bridge's collapse.工程师对桥的倒塌做一次彻底的调查分析。
学英语单词
A fool's bolt is soon shot .
actual mixing cycle
Akula
allocation of agriculture
Amidozon
ampere-turns
arsenic ulcer
ataraxias
Bain circuit
baths
bells the cat
benzotriazole
cabalize
chromatin body
Chulmleigh
circular point at infinity
CMTMDS
collecting tubules
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creped paper
cut to a point
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direct ascent weapon
doliops similis
dump skip
equatorial coordinates
euler microtime scale
ex-ante efficiency analysis
facsimiled
fibre grease
first-aid
food demand
formamide process
frondosely
fuck-me
full-year loss
glason
grammole
hand power crane
heating pattern
Heichelheim's tests
high speed paper cutting machine
highly internationalized operation
Hitzig tests
hornblendite
immedial sky blue
international reference group
inverse of multiplication
jayakody
Kanigogouma
keeps guard
keneret
lapsed sales discounts
ligamentous ankylosis
like fury
litas
logp
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milking pipeline
modelbuilding
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not put a foot wrong
official position
one upper
organizational change
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perihysteric
physiology of protozoa
pneumatic linkage
poetica
preeclampsia
prosinesses
reauthorising
red prussiate of potash
residual competence
road-blocking
root-mean-square simulation error
Schwegenheim
shadflies
Shell sort
short rainbow
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sidescraper
sing low
slash with
sowles
stress-timeds
subtriplicated
sweep along
tethered unit
their majesties
treating waste water
tuco-tuco
vettura
wallabas
wavefront curvature
wely
when to charge