scientific american - 2001 05 - get the idea (tomorrow''s web will)

... Biológica of Doñana-CSIC. At night, the animals leave the safety of the scrubs to hunt on the open lands and find themselves at the mercy of hounds unleashed by the poach- ers during their nocturnal ... badgers belonged to the five territories in Coto del Rey; the others resided within the core of the park, Reserve Biológica. Of the tagged bad- gers, the team recorded 13...

Ngày tải lên: 12/05/2014, 16:08

... Molecule OXYGEN Copyright 2001 Scientific American, Inc. Scientific American March 2001 19www.sciam.com News & Analysis R ENO, NEV. The Chicxulub Cra- ter, sprawled across the Gulf of Mexico and the Yucatán Penin- sula, ... an itch. Examining anesthetized cats, they tracked the response of these neurons when itch- inducing histamine was ap- plied to the skin. The discov...

Ngày tải lên: 12/05/2014, 16:08

... produce therapeutic pro- teins. McCormick thinks that the single-chain anti- bodies can be adapted easily to one-size-fits-all thera- pies, perhaps against cancers of the pancreas, colon and other ... Copyright 2001 Scientific American, Inc. 26 SCIENTIFIC AMERICAN OCTOBER 2001 Innovations Another unusual feature of NHL is that the antigen is actually an antibody. So a single-...

Ngày tải lên: 12/05/2014, 16:10

... have been found there, some in deep bogs, one in a cave, others scattered about. How they came there no- body can tell. They are of great an- tiquity. They have inscriptions on them in the ancient ... beta-amyloid are able to cross the blood-brain barrier. Then the antibody forms a complex with beta- amyloid that triggers microglia —support cells in the brain —to destroy the plaques...

Ngày tải lên: 12/05/2014, 16:12

... inhibit candor when they are posed the ques- tion, ÒHow big is the diÝerence?Ó (Fur- ther, the work has not yet been peer-re- viewed or published, so the team re- mains quite cautious about the details.) Essentially ... development. Ion-beam advocates point out the biases of their oppo- nents. The current budget gave $15 million to IBM to develop an x-ray lithography component....

Ngày tải lên: 12/05/2014, 15:01

... Among the most com- mon mines in this group are the Italian scatterable mines TS-50 and SB-33 and the hand-laid VS-50 and VAR-40, the U.S made M14, and the Chinese Type 72. Typically, these weapons ... Space Adminis- tration unveiled the X-36 the first high-performance jet with no tail at all. Remotely controlled and powered by a cruise-mis- sile engine, the 5.4-meter-long, 600-...

Ngày tải lên: 12/05/2014, 15:08

... offered to them, some home owners will balk at the idea of selling their excess electricity at a dis- count to the local utility, which then re- sells the power for several times the price. The biggest ... though, the mothers bring them out into the open to join the rest of the pride. If any of the other females have cubs, they form a crèche and remain in near-con- stant...

Ngày tải lên: 12/05/2014, 15:23

... archaeologists tell layers apart by playing a game of which-stars- are-not-like -the- others. The sun and most other stars swirl around the galactic center within a thin circular disk. Nearly a ... terrorism. The McVeigh group and other organized, overtly ideological extrem- ists —whether right-wing, left-wing, anti-Mus- lim, pro-Muslim, anti-Castro, Puerto Rican nationalist, eco-terror...

Ngày tải lên: 12/05/2014, 16:08

... Copyright 2001 Scientific American, Inc.Copyright 2001 Scientific American, Inc. or Life By Rakesh K. Jain and Peter F. Carmeliet Copyright 2001 Scientific American, Inc.Copyright 2001 Scientific American, ... Scientific American, Inc. 36 SCIENTIFIC AMERICAN DECEMBER 2001 BETTMANN/CORBIS Profile of the most-talked-about environmental issues of the 20th century...

Ngày tải lên: 12/05/2014, 16:11

... disrupting the signals between neurons. COPYRIGHT 2004 SCIENTIFIC AMERICAN, INC. 28 SCIENTIFIC AMERICAN MAY 2004 I n the 18 years since they were dis- covered, high-temperature supercon- ductors ... what remains of the mess left by the Exxon Valdez. The oil compo- nents are poisoning the otters. COPYRIGHT 2004 SCIENTIFIC AMERICAN, INC. www.sciam.com SCIENTIFIC AMERIC...

Ngày tải lên: 12/05/2014, 16:20