美国科学60秒 SSS 2013-08-05
时间：2019-01-20 作者：英语课 分类：Scientific American(八)月
It's similiar to a pregnancy 1 test: a drop of liquid on a strip of paper causes an easily seen color change. But imagine that kind of simple, cheap technology employed in testing for pollution or health issues anywhere and on the cheap. Researchers at Colorado State University describe such a system in the journal Lab on a Chip. Other paper tests may give only slight color differences and some relies on expensive equipment to read their results. For the new technology, the research team designed a system that creats a dramatic color change on the paper. The user drops liquid to be analyzed 2 at the bottom of the paper. As capillary 3 action pulls the liquid up, substances in the paper react causing the color change. So far, three tests exist for the system. One looks for nickle which can be an environmental pollutant 4. The other two are for glutathione, a health marker, and glocose for diabetics. In trials,the paper tests competed with conventional methods at measuring concentrations. The university is now spinning off a company to develop the technology. If successful, it could bring cheap, easy analysis to scientists and citizens around the world.
- Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
- Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。
- The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
- The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》
- Rapid capillary proliferation is a prominent feature of all early wound healing.迅速的毛细血管增生是所有早期伤口愈合的一个突出表现。
- When pulmonary capillary pressure is markedly elevated,pulmonary edema ensues.当肺毛细血管压力明显升高时，就出现肺水肿。