scientific american

scientific american   -  1993 01  -  the turbulent birth of the milky way

scientific american - 1993 01 - the turbulent birth of the milky way

Ngày tải lên : 12/05/2014, 14:48
... the delicate bal- ance among symbionts is destroyed. SCIENTIFIC AMERICAN January 1993 65 Copyright 1992 Scientific American, Inc. SCIENTIFIC AMERICAN January 1993 69 tures. Although it appears ... homogeneous. SCIENTIFIC AMERICAN January 1993 75 IRON ABUNDANCE (SOLAR UNITS) OXYGEN-TO-IRON RATIO (SOLAR UNITS) 0.010.001 0.1 1.0 4 3 2 1 HALO STARS OLD DISK STARS Copyright 1992 Scientific American, ... Chaput; Vice Presi- dents: Jonathan Piel, John J. Moeling, Jr. 10 SCIENTIFIC AMERICAN January 1993 Copyright 1992 Scientific American, Inc. s a feminist in a family with Victo- rian mores and...
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scientific american   -  1993 02  -  beating resistance in superconductors

scientific american - 1993 02 - beating resistance in superconductors

Ngày tải lên : 12/05/2014, 14:48
... zinc-centered structure devoted to DNA recognition. 62 SCIENTIFIC AMERICAN February 1993 Copyright 1993 Scientific American, Inc. 68 SCIENTIFIC AMERICAN February 1993 product; cilastatin does not. ... in the number of bases separating the half sites. 64 SCIENTIFIC AMERICAN February 1993 Copyright 1993 Scientific American, Inc. 44 SCIENTIFIC AMERICAN February 1993 the combined eÝect of environmental problems ... Bar- ger; Vice Presidents : Jonathan Piel, John J. Moeling, Jr. 8 SCIENTIFIC AMERICAN February 1993 Copyright 1993 Scientific American, Inc. three hydrophobic amino acids in vir- tually identical...
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scientific american   -  1993 03  -  black holes and the centrifugal force paradox

scientific american - 1993 03 - black holes and the centrifugal force paradox

Ngày tải lên : 12/05/2014, 14:49
... for Òthings I donÕt understand.Ó 40 SCIENTIFIC AMERICAN March 1993 Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN March 1993 75 Copyright 1993 Scientific American, Inc. an immune rejection ... human culture. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... SUBSTRATE TRANSPARENT DISPLAY ELECTRODE GATE (ROW) LINE TRANSPARENT COMMON ELECTRODE LIGHT Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN March 1993 69 Debris inhibits deck drainage. Standing water promotes deck...
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scientific american   -  1993 04  -  controlling the quantum jitters of atoms

scientific american - 1993 04 - controlling the quantum jitters of atoms

Ngày tải lên : 12/05/2014, 14:49
... but highly disabling illnesses associated with old age. SCIENTIFIC AMERICAN April 1993 51 Copyright 1993 Scientific American, Inc. 82 SCIENTIFIC AMERICAN April 1993 to establish and defend a nesting ... counseling Congress on technological issues. 42 SCIENTIFIC AMERICAN April 1993 ROBERT PROCHNOW Copyright 1993 Scientific American, Inc. 48 SCIENTIFIC AMERICAN April 1993 low levels for one average ... to medicine. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc....
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scientific american   -  1993 05  -  building soft machines from smart gels

scientific american - 1993 05 - building soft machines from smart gels

Ngày tải lên : 12/05/2014, 14:49
... and depression. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... 515-247-7631. Postmaster: Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, Inc., 415 Madison Avenue, New York, ... relies on three drugs that converge on a viral molecule. 18 SCIENTIFIC AMERICAN May 1993 RICK FRIEDMAN Black Star Copyright 1993 Scientific American, Inc. ¨ Established 1845 THE COVER painting provides...
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scientific american   -  1993 06  -  tuning in the radio signals of ancient galaxies

scientific american - 1993 06 - tuning in the radio signals of ancient galaxies

Ngày tải lên : 12/05/2014, 14:49
... with autism. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... secreted are estradiol, a potent kind of estrogen, and progesterone. SCIENTIFIC AMERICAN June 1993 101 Copyright 1993 Scientific American, Inc. I am writing this article on a com- puter that contains ... Women 36 SCIENTIFIC AMERICAN June 1993 NAFIS SADIK, executive director of the U.N. Population Fund, notes Òall the preferences in our society are for men.Ó ROBERT PROCHNOW Copyright 1993 Scientific American, ...
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scientific american   -  1993 07  -  telling resonable risks from fools' chances

scientific american - 1993 07 - telling resonable risks from fools' chances

Ngày tải lên : 12/05/2014, 14:49
... Bar- ger ; Vice Presidents: Jonathan Piel, John J. Moeling, Jr. 8 SCIENTIFIC AMERICAN July 1993 PRINTED IN U.S.A. Copyright 1993 Scientific American, Inc. repolarize and prepare for Þring anew. Impulses ... THRESHOLD Copyright 1993 Scientific American, Inc. LETTERS TO THE EDITORS More Black Hole Paradoxes I enjoyed ÒBlack Holes and the Cen- trifugal Force Paradox,Ó by Marek Ar- tur Abramowicz [SCIENTIFIC AMERICAN, March], ... workplace and consumer products. Second, these oÛcials have often 40 SCIENTIFIC AMERICAN July 1993 Copyright 1993 Scientific American, Inc. ...
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scientific american   -  1993 08  -  can particles move faster than light

scientific american - 1993 08 - can particles move faster than light

Ngày tải lên : 12/05/2014, 14:50
... environment. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... 515-247-7631. Postmaster : Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, Inc., 415 Madison Avenue, New York, ... ; Vice Presidents: Jonathan Piel, John J. Moeling, Jr. 6 SCIENTIFIC AMERICAN August 1993 PRINTED IN U.S.A. Copyright 1993 Scientific American, Inc. plutonium for reactor fuel proves eco- nomically...
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scientific american   -  1993 09  -  special issue  -  life, death, and the immune system

scientific american - 1993 09 - special issue - life, death, and the immune system

Ngày tải lên : 12/05/2014, 14:50
... CELL PLASMA CELL Copyright 1993 Scientific American, Inc. Copyright 1993 Scientific American, Inc. Copyright 1993 Scientific American, Inc. Copyright 1993 Scientific American, Inc. workers can identify ... garbage. Mathematical Recreations Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... 515-247-7631. Postmaster: Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, Inc., 415 Madison Avenue, New York,...
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scientific american   -  1993 10  -  is los angeles winning the war on smog

scientific american - 1993 10 - is los angeles winning the war on smog

Ngày tải lên : 12/05/2014, 14:50
... in the brain. Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1993 by Scientific American, Inc. ... 1992 revealed that the number of employees per vehicle SCIENTIFIC AMERICAN October 1993 37 Copyright 1993 Scientific American, Inc. 8SCIENTIFIC AMERICAN October 1993 Simplify, Simplify Essayist W. ... Lane from using his name to promote a shark cartilage product. 24 SCIENTIFIC AMERICAN October 1993 Copyright 1993 Scientific American, Inc. T he T-1000Ña nearly indestruc- tible robot that was...
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scientific american   -  1993 11  -  reading the genes of extinct species

scientific american - 1993 11 - reading the genes of extinct species

Ngày tải lên : 12/05/2014, 14:50
... think, Why not? ÑJohn Horgan 38 SCIENTIFIC AMERICAN November 1993 Copyright 1993 Scientific American, Inc. SCIENTIFIC AMERICAN November 1993 73 Copyright 1993 Scientific American, Inc. glycine receptors, ... I would have to add that this is true for African-Americans, Hispanic-Americans, female Americans, gay Americans, poor Americans, handicapped Americans and other oppressed minorities. ÒSociety ... bombers). Battleship, 1941 Continued on page 76 Copyright 1993 Scientific American, Inc.Copyright 1993 Scientific American, Inc. 12 SCIENTIFIC AMERICAN November 1993 50 AND 100 YEARS AGO 0NOVEMBER 1943 ÒAir-conditioning...
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scientific american   -  1993 12  -  taming africanized killer bees

scientific american - 1993 12 - taming africanized killer bees

Ngày tải lên : 12/05/2014, 14:50
... X-RAYS COMPTON OBSERVATORY RADIO TELESCOPE OPTICAL TELESCOPE Copyright 1993 Scientific American, Inc. 18 SCIENTIFIC AMERICAN December 1993 hree years ago W. French Ander- son, then at the National ... safety,Ó Radlick boasts, Òand we got very good metabolic sup- 32 SCIENTIFIC AMERICAN December 1993 Copyright 1993 Scientific American, Inc. portÑenough to encourage us very strongly to go into ... a viable and reliable treatment in its own right. ÑW. Wayt Gibbs SCIENTIFIC AMERICAN December 1993 33 Copyright 1993 Scientific American, Inc. razilian lore has it that a red- haired, human-sized...
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scientific american   -  1994 01  -  searching for strange quark matter

scientific american - 1994 01 - searching for strange quark matter

Ngày tải lên : 12/05/2014, 14:50
... Diversity Colin Renfrew Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1994 by Scientific American, Inc. ... wanted PROFILE: ALBERT EINSTEIN Keyhole View of a Genius 26 SCIENTIFIC AMERICAN January 1994 FRED STEIN Black Star Copyright 1994 Scientific American, Inc. 116 124 130 The First Data Networks Gerard ... of bioactive molecules in cyanobacteria and algae. Copyright 1994 Scientific American, Inc. SCIENCE AND THE CITIZEN SCIENTIFIC AMERICAN January 1994 17 Joe Btfsplk NASAÕs big-science projects...
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scientific american   -  1994 02  -  do aerosols slow climatic warming

scientific american - 1994 02 - do aerosols slow climatic warming

Ngày tải lên : 12/05/2014, 14:50
... Samuel R. Friedman Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1994 by Scientific American, Inc. All ... power? Laid-Back Leader Rattles the Academy 34 SCIENTIFIC AMERICAN February 1994 CHRIS USHER Black Star Copyright 1994 Scientific American, Inc. 70 SCIENTIFIC AMERICAN February 1994 left at the scene ... 247-7631. Postmaster : Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, Inc., 415 Madison Avenue, New York,...
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scientific american   -  1994 03  -  visiting yourself in the past

scientific american - 1994 03 - visiting yourself in the past

Ngày tải lên : 12/05/2014, 14:54
... im- Copyright 1994 Scientific American, Inc.Copyright 1994 Scientific American, Inc.Copyright 1994 Scientific American, Inc.Copyright 1994 Scientific American, Inc. 32 SCIENTIFIC AMERICAN March 1994 C lad ... Bernardo A. Huberman Scientific American (ISSN 0036-8733), published monthly by Scientific American, Inc., 415 Madison Avenue, New York, N.Y. 10017-1111. Copyright © 1994 by Scientific American, Inc. All ... 247-7631. Postmaster: Send address changes to Scientific American, Box 3187, Harlan, Iowa 51537. Reprints available: write Reprint Department, Scientific American, Inc., 415 Madison Avenue, New York,...
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