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Previous Issue: New Series, Vol. 247, No. 4944, Feb. 16, 1990
Next Issue: New Series, Vol. 247, No. 4946, Mar. 2, 1990
Front Matter (12 pp.)
A National Engineering and Technology Agency, p. 901
- W. F. Brinkman
Letters
- Space Shuttle Advanced Solid Rocket Motor Testing, p. 904
- Roy Estess; Elliot Marshall
- Molecule of the Year, pp. 904-905
- Curt Covey; Daniel E. Koshland, Jr.; Albert M. Galaburda; Richard C. Bell
- Poverty Among U.S. Children, p. 905
- Stephen Dewhurst
- Shockley: A Scholar, p. 905
- J. Philippe Rushton; Constance Holden
News and Comment
- Biotechnology on the Auction Block, pp. 906-908
- Marcia Barinaga
- NIH Goes "Extra Mile" on Gallo, p. 908
- Barbara J. Culliton
- U.S. Lags on Birth Control Development, p. 909
- Leslie Roberts
- The Puzzling Pulsar that Wasn't There, p. 910
- M. Mitchell Waldrop
- Scientists Battle Over Grand Canyon Pollution, pp. 911-912
- Mark Crawford
Research News
- Mathematics Untwists the Double Helix, pp. 913-915
- Barry Cipra
- Impact-Geomagnetic Reversal Link Rejected, p. 916
- Richard A. Kerr
- Hurricane Forecasting Shows Promise, p. 917
- Richard A. Kerr
- New Telescope Opens for Business, p. 917
- M. Mitchell Waldrop
Briefings
- Lords Approve Embryo Research, p. 918
- Constance Holden
- The Next "Nobel"?, p. 918
- Constance Holden
- NRC Weighs in on Precollege Math, p. 918
- Constance Holden
- The Prince and the Forests, p. 918
- Constance Holden
- Yeast Lib, pp. 918-919
- Constance Holden
- Global Warming Petition, p. 919
- Constance Holden
- Legal Drugs: A View from Neuroscience, p. 919
- Constance Holden
- Who Gets a New Liver?, p. 919
- Constance Holden
- Tritium Production, p. 919
- Constance Holden
- Planetary Portrait Gallery, p. 919
- Constance Holden
Learning Curves in Manufacturing, pp. 920-924
- Linda Argote; Dennis Epple
Studies of Unusual Simple Molecules by Neutralization-Reionization Mass Spectrometry, pp. 925-929
- Fred W. McLafferty
Protein Sorting to Mitochondria: Evolutionary Conservations of Folding and Assembly, pp. 930-938
- Franz-Ulrich Hartl; Walter Neupert
Research Article
- Molecular Switch for Signal Transduction: Structural Differences between Active and Inactive Forms of Protooncogenic ras Proteins, pp. 939-945
- Michael V. Milburn; Liang Tong; Abraham M. deVos; Axel Brünger; Ziro Yamaizumi; Susumu Nishimura; Sung-Hou Kim
Reports
- The MerR Metalloregulatory Protein Binds Mercuric Ion as a Tricoordinate, Metal-Bridged Dimer, pp. 946-948
- John D. Helmann; Barry T. Ballard; Christopher T. Walsh
- Predator-Induced Life-History Shifts in a Freshwater Snail, pp. 949-951
- Todd A. Crowl; Alan P. Covich
- Double Fertilization in Ephedra, a Nonflowering Seed Plant: Its Bearing on the Origin of Angiosperms, pp. 951-954
- William E. Friedman
- Novel Fluorogenic Substrates for Assaying Retroviral Proteases by Resonance Energy Transfer, pp. 954-958
- Edmund D. Matayoshi; Gary T. Wang; Grant A. Krafft; John Erickson
- Molecular Characterization of a Functional cDNA Encoding the Rat Substance P Receptor, pp. 958-962
- Andrew D. Hershey; James E. Krause
- Ligand-Induced Transformation by a Noninternalizing Epidermal Growth Factor Receptor, pp. 962-964
- Alan Wells; John B. Welsh; Cheri S. Lazar; H. Steven Wiley; Gordon N. Gill; Michael G. Rosenfeld
- Requirement for Cotolerogenic Gene Products in the Clonal Deletion of I-E Reactive T Cells, pp. 964-967
- David Woodland; Mary Pat Happ; Jerome Bill; Ed Palmer
- Mini-Mouse: Disruption of the Pygmy Locus in a Transgenic Insertional Mutant, pp. 967-969
- Xin Xiang; Kathleen F. Benson; Kiran Chada
- Atrionatriuretic Peptide Transforms Cardiac Sodium Channels into Calcium-Conducting Channels, pp. 969-973
- Lisa Ann Sorbera; Martin Morad
- A Family of Three Mouse Potassium Channel Genes with Intronless Coding Regions, pp. 973-975
- K. George Chandy; Calvin B. Williams; Robert H. Spencer; Barbara A. Aguilar; Sanjiv Ghanshani; Bruce L. Tempel; George A. Gutman
- Transplanted Suprachiasmatic Nucleus Determines Circadian Period, pp. 975-978
- Martin R. Ralph; Russell G. Foster; Fred C. Davis; Michael Menaker
- Regularization Algorithms for Learning that are Equivalent to Multilayer Networks, pp. 978-982
- T. Poggio; F. Girosi
Book Reviews
- The Ether-Drift Experiment, p. 985
- The Michelson Era in American Science, 1870-1930.
- Stanley Goldberg; Roger H. Stuewer
- Review author[s]: John W. Servos
- Erwin Schrödinger, pp. 985-986
- Schrödinger. Life and Thought.
- Walter Moore
- Review author[s]: C. W. Kilmister
- Tales of Invention, p. 986
- My Life with the Printed Circuit.
- Paul Eisler
- Review author[s]: Charles Susskind
- Shore Life, pp. 986-987
- Shore Ecology of the Gulf of Mexico.
- Joseph C. Britton; Brian Morton
- Review author[s]: Alan J. Kohn
- A Coastal Project, pp. 987-988
- Nearshore Sediment Transport.
- Richard J. Seymour
- Review author[s]: Nicholas C. Kraus
- Books Received, p. 988
Back Matter (20 pp.)
Previous Issue: New Series, Vol. 247, No. 4944, Feb. 16, 1990
Next Issue: New Series, Vol. 247, No. 4946, Mar. 2, 1990