scientific american - 2003 05 - infinite earths in parallel universes really exist

... are explained in terms of vi- brating strings. “The average physicist wasn’t into do- ing this —it was just so alien to them,” the 47-year-old 38 SCIENTIFIC AMERICAN MAY 2003 FOREST McMULLIN Profile Wired ... LIGHT, GO: Light-emitting diodes stimulate plant growth in space and may also help repair tissue, including methanol-damaged retinas. COPYRIGHT 2003 SCIENTIFIC AMERICAN,...

Ngày tải lên: 12/05/2014, 16:17

... pro- gram, including Hu Side, head of the Chinese Academy of Engineering Phys- ics, and his deputy Du Xiangwan. Both are “very strong arms-control advo- cates,” Cochran insists. An internation- al ... Krasnoyarsk early-warning radar in central Siberia. Now Cochran is try- ing to pull off the same trick in China. He says he has developed “good relations” with a num- ber of in uential figur...

Ngày tải lên: 12/05/2014, 15:36

... aplomb. 34 SCIENTIFIC AMERICAN February 1993 RAYMOND GENDREAU Copyright 1993 Scientific American, Inc.Copyright 1993 Scientific American, Inc. ing to computers. A few scientists, in- cluding Stephen ... He also works on his violin playing and veg- etable gardening. Huse has been primar- ily interested in the theory of phase tran- sitions in various materials, including spin gl...

Ngày tải lên: 12/05/2014, 14:48

... NIAID an- nounced that it was Òaccelerating the tri- al design processÓ with the intention of starting clinical trials of convergent ther- apy during the spring. Initially the tri- als were to involve ... another way of maintaining a pa- tientÕs health until a cure can be found. The individual and combined side ef- fects of the drugs must also be taken into account. In all combination thera...

Ngày tải lên: 12/05/2014, 14:49

... primer walking. Their approach uses a library of hexamers (six-base primers) and a protein that binds to single-strand ge- nomic DNA. The binding protein pre- vents individual hexamers from pairing stably ... abundances of the original miner- als in the peridotite. Some minerals, such as clinopyroxene, melt more easi- ly than do others and hence rapidly de- crease in abundance during the...

Ngày tải lên: 12/05/2014, 14:54

... MILLION 1 IN 10 MILLION 1 IN 1 MILLION 1 IN 100,000 1 IN 10,000 Odds of any- thing happen- ing to only one person in the world at any time Odds of any- thing happen- ing to only one person in the ... Stix 1 IN 1 TRILLION CHANCE OF AN EVENT OCCURRING 1 IN 100 BILLION Woman be- ing killed by a husband or lover 1 IN 10 BILLION Drowning in a tub Being killed by lightnin...

Ngày tải lên: 12/05/2014, 15:01

... 1995 Scientific American, Inc. W hen computer diagnostician Angela Bennett (played by San- dra Bullock) disabled a main- frame computer with a virus-infected disk slipped into a Macintosh in this past ... com- pletely outside of it.Ó The whirring ma- chine splintered, spewing blood onto the walls, carpets and window, where it merged into the sunset. ÒI screamed again and again. Slowly th...

Ngày tải lên: 12/05/2014, 15:02

... technology. “Treating each systems acquisition as a separate [technological] solution,” Strassmann testified in a Senate hear- ing, “has resulted in thousands of unin- tegrated, hard-to-maintain, impossible- to-manage, ... Italy; telephone: 3 9-2 -7 60 0-1 104; fax: 3 9-2 -7 60 0-3 719. Further Reading Hidden Killers: The Global Problem with Uncleared Landmines: A Report on Inter...

Ngày tải lên: 12/05/2014, 15:08

... typically now made by a laborious hit-or- miss procedure that involves in- jecting genes into eggs and breed- ing the few animals that take up the genes. Cloning should expe- dite the rapid generation ... complica- tions and respi- ratory symp- toms. Neurologi- cal, psychiatric and ophthalmic diseases were also most preva- lent among the most heavily ex- posed. In an ac- companying pa- pe...

Ngày tải lên: 12/05/2014, 15:23

... SABA In Brief, continued from page 22 Incredible Shrinking Brain Diabetes, high blood pressure, smoking and heavy drinking can have ominous consequences for the brain in old age, ac- cording to ... degeneration, the leading cause of legal blindness in se- niors. In this condition, abnormal blood vessel growth and bleeding occurs be- hind the macula, the center of the retina. Sealing t...

Ngày tải lên: 12/05/2014, 15:57