scientific american - 1997 11 - mercury''s long, hot afternoon

... MISTAKE MIGHT BE ONLY 15 MINUTES AWAY Mercury’s long, hot afternoon Mercury’s long, hot afternoon NOVEMBER 1997 $4.95 Copyright 1997 Scientific American, Inc. the Eugene Island field, in the Gulf ... form a connection. OIL IN 4-D Time-lapse software boosts oil recovery APPLIED GEOLOGY COURTESY OF JEAN-CLAUDE BRADLEY Copyright 1997 Scientific American, Inc. VIRUS-KILLI...

Ngày tải lên: 12/05/2014, 15:31

... Analysis42 Scientific American January 1997 CYBER VIEW No More 9 to 5 DAVID SUTER Copyright 1996 Scientific American, Inc.Copyright 1996 Scientific American, Inc. R oughly once a second, a subatom- ic ... SINIBALDI Tony Stone Images Copyright 1996 Scientific American, Inc.Copyright 1996 Scientific American, Inc. News and Analysis Scientific American January 1997 31 sur...

Ngày tải lên: 12/05/2014, 15:20

... hours after they last heard from it, they reenacted one of those Tranquilli- ty-base-here-the-Eagle-has-landed, NASA-flight-control jubilation scenes. Laima is the Latvian goddess of good fortune, ... interested in them for use in bal- listic-missile intercep- tors; a space-based pro- jectile of less than a kilogram could acceler- News and Analysis50 Scientific American November 1998 DARP...

Ngày tải lên: 12/05/2014, 15:48

... did not warrant reme- dial legislation or regulatory action. 24 SCIENTIFIC AMERICAN November 1993 COPYRIGHT 1993 SCIENTIFIC AMERICAN, INC. But the Six Cities Study directly ad- dressed such factors. ... fea- tures, he resembles a high- tech Buddha. Minsky is unable, or unwil- ling, to inhabit any emotion for long. Early on, as predict- ed, he plays the curmud- geon. His only rival in g...

Ngày tải lên: 12/05/2014, 14:50

... GEL SEROGROUP A Neisseria meningitidis III-1 I-1 I-2 I-3 I-4 I-5 I-6 I-7 I-8 I-9 II-1 II-2 II-3 II-4 III-2 III-3 III-4 IV-1 IV-2 IV-3 IV-4 CLONES SUBGROUP 4 SUBGROUP 1 SUBGROUP ... and mem- brane-bound lipooligosaccharides com- mon to N. lactamica and N. meningi- tidisÑmay confer immunity. This mechanism of immunity could explain the Þve- to 12-year intervals be- tween ... sho...

Ngày tải lên: 12/05/2014, 14:59

... scientiÞc, legal and public atten- tion it can get. ÑKristin Leutwyler 30 SCIENTIFIC AMERICAN December 1994 Copyright 1994 Scientific American, Inc. 32 SCIENTIFIC AMERICAN December 1994 M athematicians ... into ac- The No-Name Virus Questions linger after the Four Corners outbreak Copyright 1994 Scientific American, Inc. 36 SCIENTIFIC AMERICAN December 1994 A thin layer of...

Ngày tải lên: 12/05/2014, 14:59

... capabil- ities of the applications in which they are embedded: a word-processing mac- ro, for example, might use the search- and-replace function in conjunction with the word-counting command to ad- just ... GOLTZ Copyright 1995 Scientific American, Inc. ond, but at the higher latitudes now being monitored, its speed changes abruptly to 750 kilo- meters per second. The bound- ary between t...

Ngày tải lên: 12/05/2014, 15:02

... pursuits ranging from can- cer to mental health is the Office of Al- ternative Medicine ( OAM). The OAM administers a $7.48-million-a-year pro- gram to assist the medical establish- ment and the public ... Analysis Scientific American October 1996 37 Copyright 1996 Scientific American, Inc. E uropean governments are dis- covering the Internet, and they aren’t too sure they like it. The...

Ngày tải lên: 12/05/2014, 15:15

... the executive order’s “state-of-the-art” tech- nology exemption to the bulk declassi - cation rule. But that introduces another concern. “The issue is, what does state- of-the-art technology mean?” ... People who used to live se- cluded in Welsh-speaking valleys or on Navajo-speaking mesas are now con- nected to English-dominated informa- tion on the airwaves and the Net. Uni- versal trans...

Ngày tải lên: 12/05/2014, 15:16

... Boeing 609 will actu- ally be an updated version of the exper- imental, 1970s-era XV-15, which was a test-bed for a military tilt-rotor known as the V-22 Osprey. The V-22’s devel- opment program, ... Horgan PRIZE MISTAKE The n-body problem is solved—too late MATHEMATICS LAUROS-GIRAUDON/ART RESOURCE Copyright 1997 Scientific American, Inc. News and Analysis Scientific American Februa...

Ngày tải lên: 12/05/2014, 15:20