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Tech shorts.


Tech shorts

With increasing public awareness of the dangers of exposure to secondhand tobacco smoke, Assay Technology, Inc., of Palo Alto Palo Alto, city, California
Palo Alto (păl`ō ăl`tō), city (1990 pop. 55,900), Santa Clara co., W Calif.; inc. 1894. Although primarily residential, Palo Alto has aerospace, electronics, and advanced research industries.
, Calif., is producing a disposable badge that it says is the first low-cost (at less than $5 per badge) and easy-to-use test for measuring smoke and evaluating the effectiveness of smoking policies aimed at protecting nonsmokers.

Melanin melanin (mĕl`ənĭn), water-insoluble polymer of various compounds derived from the amino acid tyrosine. It is one of two pigments found in human skin and hair and adds brown to skin color; the other pigment is carotene, which contributes , the pigment found in skin and eyes, is known to absorb different wavelengths of light in proportion to the amount of photochemical photochemical

in laser treatment, the laser light is absorbed and converted into chemical energy.
 damage they inflict on the retina. This makes the polymer a natural for sunglasses, according to James Gallas, a biological physicist at the University of Texas at San Antonio The main campus is situated on 600 acres (2.4 km²,) at the intersection of Interstate 10 and Loop 1604 near the northern edge of San Antonio, Texas in Bexar County. The university is also one of the UT System's fastest growing schools, maintaining a 12. , who has recently patented his process for incorporating synthesized melanin into plastic lenses.
COPYRIGHT 1987 Science Service, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1987, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:badge for testing smoke levels; use of melanin in sunglasses
Publication:Science News
Date:Nov 28, 1987
Words:122
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