scientific american - 2002 03 - new antidotes to anthrax

... Minkel Copyright 2002 Scientific American, Inc. www.sciam.com SCIENTIFIC AMERICAN 29 FARRELL GREHAN Corbis (top); SCOTT CAMAZINE Photo Researchers, Inc. (bottom) news SCAN ■ In a step toward xenotransplantation, ... builds character for would-be astronauts—here in January 2000. Copyright 2002 Scientific American, Inc. 24 SCIENTIFIC AMERICAN MARCH 2002 news SCAN W ith little alte...

Ngày tải lên: 12/05/2014, 16:12

... people to go hungry. for an 36 SCIENTIFIC AMERICAN AUGUST 2002 COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. THE BEST-STUDIED CANDIDATE for a caloric-restriction ... Development COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. 28 SCIENTIFIC AMERICAN AUGUST 2002 PAT GREENHOUSE AP Photo (top); SCOTT CAMAZINE Science News (bottom); ILLUST...

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... cortex COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. 20 SCIENTIFIC AMERICAN MAY 2002 news SCAN W hat do you do when one rare, pro- tected species threatens the liveli- hood of another, even more endan- gered ... region COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. www.sciam.com SCIENTIFIC AMERICAN 35 news SCAN SCOTT CAMAZINE AND SHARON BILOTTA-BEST Photo Researchers, Inc. (top); MI...

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... they’ve been saved.” TO SCREEN OR NOT TO SCREEN? COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. 18 SCIENTIFIC AMERICAN JUNE 2002 DEPARTMENT OF ENERGY OFFICE OF RIVER PROTECTION news SCAN to reduce the quantity ... technicians working to replace a pump in a million-gallon storage tank at the Hanford site in Washington State. COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC. www.sciam....

Ngày tải lên: 12/05/2014, 16:12

... detec- tor should enable researchers to identi- fy bottom quarks unambiguously and thereby make it easier to recognize top- quark events. One of the two events touted as a top- quark decay seems to ... fac- tors,Ó Gendelman says. ÒThe NMDA re- ceptor could be that pathway.Ó And gp120 has a role in this activi- ty as well. Not only does the viral pro- tein stimulate the synthesis of toxi...

Ngày tải lên: 12/05/2014, 14:49

... Cambridge, Chandrase- khar began applying his al- ready broad knowledge of quantum mechanics and rel- ativity to the question of how stars evolve. Among his men- tors was Sir Arthur Edding- ton, whose ... before the Royal Astronomical Society, Eddington himself stood to rid- icule it as self-evidently wrong, an ex- ample of reductio ad absurdum. Edding- ton had previously given his protŽg...

Ngày tải lên: 12/05/2014, 14:54

... 5034 0-1 314, or call (800) 77 7-0 444. Photocopying rights are hereby grant- ed by ScientiÞc American, Inc., to li- braries and others registered with the Copyright Clearance Center (CCC) to photocopy ... 415 Madison Ave- nue, New York, NY 1001 7-1 111, fax (212) 98 0-8 175 or call (800) 77 7-0 444. ScientiÞc American- branded products available. For free catalogue, write S...

Ngày tải lên: 12/05/2014, 15:00

... to gather enough plant material to test conclu- sively for taxol or any relat- ed substances in the tor- reya. But Strobel feels the tree is promising as a possi- ble source both of taxol-re- lated ... how- ever, to last. A year and a half into his graduate studies, the student was draft- ed and sent to the Sahara to Þght a new French warÑagainst Algerians demand- ing independence...

Ngày tải lên: 12/05/2014, 15:06

... close to town, some residents of Vladivostok might just agree. —David Schneider News and Analysis22 Scientific American March 1997 Copyright 1997 Scientific American, Inc. News and Analysis24 Scientific ... ALEXANDER Tony Stone Images Copyright 1997 Scientific American, Inc. contaminants, but the fine-grained sed- iments that accumulate on the bottom of the sea can hold fast to...

Ngày tải lên: 12/05/2014, 15:21

... cooled atoms, we take a so-called shadow snap- shot with a flash of laser light. Because the atoms sink to the bottom of the mag- netic bowl as they cool, the cold cloud is too small to see easily. To ... asbes- tos,” a predicted bonanza for tort law- yers: no lawsuit claiming damage to physical health from proximity to pow- er lines has ever held up in court. Alleging damage to pr...

Ngày tải lên: 12/05/2014, 15:34