The epidemiology issue     

Koshland DE 《Science (New York, N.Y.)》1986,234(4779):921

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Spotting the Atoms in Grain Boundaries: To know how the boundaries between crystals affect polycrystalline structural and electronic materials, it is necessary to know quantitatively where the atoms are     

Robinson AL 《Science (New York, N.Y.)》1986,233(4766):842-844

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Max planck: the dllemmas of an upright man     

Cassidy DC 《Science (New York, N.Y.)》1986,233(4766):896

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How in the world are we?     

Carey WD 《Science (New York, N.Y.)》1986,232(4754):1073

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Electron Microscope Inventors Share Nobel Physics Prize: Ernst Ruska built the first electron microscope in 1931; Gerd Binnig and Heinrich Rohrer developed the scanning tunneling microscope 50 years later     

Robinson AL 《Science (New York, N.Y.)》1986,234(4778):821-822

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Voyager Finds Uranian Shepherds and a Well-Behaved Flock of Rings: Voyager 2 discovered the moonlets predicted to shape the Uranian rings, two new rings, a predominance of boulders in the rings, and much more     

Kerr RA 《Science (New York, N.Y.)》1986,231(4740):793-796

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The tunneling microscope: a new look at the atomic world     

Golovchenko JA 《Science (New York, N.Y.)》1986,232(4746):48-53

A new instrument called the tunneling microscope has recently been developed that is capable of generating real-space images of surfaces showing atomic structure. These images offer a new view of matter on an atomic scale. The current capabilities and limitations and the physics involved in the technique are discussed along with specific results from a study of silicon crystal surfaces.  相似文献   

Are breeder reactors still necessary?     

Weinberg AM 《Science (New York, N.Y.)》1986,232(4751):695-696

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Europe Struggles to Control Pollution: A major accident on the Rhine has highlighted Europe's need for international controls on hazardous chemicals--and the difficulties of imposing them     

Dickson D 《Science (New York, N.Y.)》1986,234(4782):1315-1316

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Phalangeal and navicular bone hypoplasia and hoof malformation in the hind limbs of a foal          下载免费PDF全文

Smith DR  Leach DH  Bell RJ 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(1):28-30,31-34

Anatomical anomalies in the hind feet of a seven month old Appaloosa foal were identified and investigated through the use of gross anatomical dissection, radiography and angiography. Abnormalities were restricted to the distal aspect of both hind legs, the right hind leg being more severely affected. Anatomically the right foot resembled that of an equine fetus of approximately 120 days gestational age. Disruption of vascular perfusion to hoof structures was evident in both hind legs and was related to areas of abnormal bone conformation as well as to areas of abnormal ossification and calcification. Phalangeal and navicular bone hypoplasia were apparent as were soft tissue and joint anomalies. Although the etiology of the defects identified remains obscure, several theories are suggested, namely heritability, acquired defects and the possible teratogenic effects of clenbuterol.  相似文献