Regional population growth rate differences: note     

Nissan E  Caveny R 《Growth and change》1988,19(1):67-74

"This note investigates regional population growth in the U.S. for 1959-84, taking into account four city sizes and three time periods. It is found that the growth is largest in city size (0.5-1.0) million and (1.0-2.0) million. Over time, the growth is largest in the less urbanized regions." The note aims to supplement the findings of Daniel Garnick and is based on data from the U.S. Bureau of Economic Analysis.  相似文献   

Joint NASA-Military Space Vehicle Planned     

M E 《Science (New York, N.Y.)》1988,239(4838):347

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Anti-Idiotypes, Receptors, and Molecular Mimicry. D. Scott Linthicum and Nadir R. Farid, Eds. Springer-Verlag, New York, 1988. xii, 322 pp., illus. $65. From a symposium, Quebec, Canada, June 1986     

Sercarz E 《Science (New York, N.Y.)》1988,241(4867):852-853

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The Scourge of Computer Viruses: Software bugs deliberately designed to replicate in computer systems have the potential to wreak havoc; protection urged for military data. Is a vaccine feasible?     

Marshall E 《Science (New York, N.Y.)》1988,240(4849):133-134

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Sic transit gloria transition     

Marshall E 《Science (New York, N.Y.)》1988,242(4881):1003

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Torsion of abdominal organs in sows: a report of 36 cases   总被引：3，自引：3，他引：0       下载免费PDF全文

Morin M  Sauvageau R  Phaneuf JB  Teuscher E  Beauregard M  Lagacé A 《The Canadian veterinary journal. La revue veterinaire canadienne》1984,25(12):440-442

Necropsy records of 36 sows with torsion of abdominal organs involving individually the stomach, the spleen, a liver lobe or the intestine were reviewed for the years 1970 to 1983, and the age, the clinical signs and the gross lesions were recorded. These acute abdominal accidents were characterized clinically by sudden death. Dry sows from large breeding units were affected. Twenty-six cases were diagnosed between January 1981 and December 1983 while only ten cases had been seen between 1970 and 1980. Gastric torsion was the most common condition (40% of the cases) and the other three conditions were equally represented (20% each). Management practises that could be responsible for the apparent increase in occurrence of this problem are discussed.  相似文献   

If Terrorists Go Nuclear: A study of high-tech terrorism finds that the risk of nuclear extortion is increasing and recommends coded locks for every weapon     

Marshall E 《Science (New York, N.Y.)》1986,233(4760):148-149

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Over a (Pork) Barrel: The Senate Rejects Peer Review: The Defense Department balked at some less-than-explicit orders on where to spend $65 million in research funds; Congress has made the orders explicit, defeating peer review     

Norman C  Marshall E 《Science (New York, N.Y.)》1986,233(4760):145-146

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The Pentagon Is Not Eating Engineers: Contrary to conventional wisdom, a report for the Academy of Engineering finds no evidence that the defense buildup is draining talent from the civil sector     

Marshall E 《Science (New York, N.Y.)》1986,234(4777):664-665

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Shooting plutonium into space     

Marshall E 《Science (New York, N.Y.)》1986,231(4744):1358-1359

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