scientific american - 2001 08 - cyber cells - simulating life for drug discovery

... created In-Q-Tel, a private not -for- profit venture-capital firm whose funding comes from taxpay- er dollars. The CIA has set up companies before, but they have been primarily undisclosed fronts for ... angular information, thereby yielding a so-called conformal map. To flatten the cortex, Hurdal takes anatomical information from a high-resolu- tion, 3-D MRI scan and feeds it into her pro-...

Ngày tải lên: 12/05/2014, 16:09

... fraction of mixed-oxide fuel that can be substi- tuted for low-enriched uranium in most light-water reactors to about one third of the core. Consequently, a 1,000-mega- watt electric light-water reactor ... af- ter CaliforniaÕs severe Loma Prieta earth- quake of 1989, according to Thomas Henyey of the University of Southern Cal- ifornia, who is also the executive direc- tor of the Southern...

Ngày tải lên: 12/05/2014, 14:50

... oppor- tunity for nations to exploit. The same can be done for submarines. T he market may not be such a large one for the developed coun- tries to give up. Modern subma- rines cost too much for ... Ar- gentina, South Korea and India, all for- mer submarine purchasers, have pro- duced some of their own vessels. It was precisely such proliferation of produc- tion capabilities that sp...

Ngày tải lên: 12/05/2014, 14:57

... Òinductivist, ameliorative, progressive, add-a-fact-at- a-time-donÕt-theorize-till-youÕre-old mod- el of doing science.Ó When I ask Gould if he believes, as Kuhn does, that science does not ad- vance toward truth, ... other) had been appointed as G-engineers, the ÒGÓ short for gad- getÑthe code name for the implo- sion bomb. We were fully respon- sible for the Þrst two cores of plu- ton...

Ngày tải lên: 12/05/2014, 15:01

... 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 ... tax-free municipal bonds to high-yield- ing taxable investments. Economists may get a slight- ly better handle on these points, thanks to the tax counterrefor- mation of 1993, which res...

Ngày tải lên: 12/05/2014, 15:02

... children five to nine years old. The risk for Native Americans is four times that for Asian-Americans and twice that for white Americans or African-Americans. Males suffer accidents at more than ... Madison Avenue, New York, NY 1001 7-1 111, fax (212) 98 0-8 175 or call (800) 77 7-0 444. Scientific American- branded products avail- able. For free catalogue, write Scientific Amer...

Ngày tải lên: 12/05/2014, 15:14

... 77 7-0 444. Scientific American- branded products avail- able. For free catalogue, write Scientific American Selections, P.O. Box 11314, Des Moines, IA 5034 0-1 314, or call (800) 77 7- 0444. E-mail: info@sciam.com Photocopying ... (212) 35 5-0 408. Index of articles since 1948 available in electronic format. Write SciDex  , Scientific American, 415 Madison Avenue, New York, NY...

Ngày tải lên: 12/05/2014, 15:29

... the po- tential for new studies in atomic phys- ics and x-ray lasers. As an x-ray source, the Z-pinch is re- markably efficient and reproducible; re- peated experiments yield the same mag- nitude ... ruling hardly represents a black-and-white case of trade trumping environment. Just as Americans resist being force-fed a prod- uct, the Asian countries are resisting U.S. efforts to force its d...

Ngày tải lên: 12/05/2014, 15:40

... gave the proceeds to a Tyrolean peas- ant family to care for the three- and-a-half-year-old Mario. For a while, things went as well as they could in the mid- dle of a war. On the farm, the boy ... feasible. As de- scribed in the June 3 New England Jour- nal of Medicine,researchers kept the im- mune system’s T cells from attacking for- eign tissue.T cells go into battle when speciali...

Ngày tải lên: 12/05/2014, 15:58

... “not of great impor- tance for the superconducting mecha- nism,” he says. For now the debate rages on, and Venkatesan suggests that the im- portant process is the formation of dis- tinct magnetic ... have galactic-strength fields, too. Such fields are as potent as other cos- mic forces, so they can no longer be ig- nored in models of galaxy formation and other celestial goings-on. Kronberg...

Ngày tải lên: 12/05/2014, 16:04