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¡¶Science¡·(»¯Ñ§¡¢²ÄÁÏ)Á¬ÔØ----(18 July 2008)
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MATERIALS SCIENCE: Tracking Corrosion Cracking Andreas Stierle Science 18 July 2008: 349-350. The effects of both mechanical strain and oxidizing agents on grain boundaries in stainless steel can now be visualized. High-Resolution Scanning X-ray Diffraction Microscopy Pierre Thibault, Martin Dierolf, Andreas Menzel, Oliver Bunk, Christian David, and Franz Pfeiffer Science 18 July 2008: 379-382. Analysis of differences in diffraction patterns at each point along an x-ray scan of a material allows imaging of a buried structure with a resolution of 50 nanometers. Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene Changgu Lee, Xiaoding Wei, Jeffrey W. Kysar, and James Hone Science 18 July 2008: 385-388. Measurements of the elastic properties of graphene agree with calculations for a defect-free material and show that it is indeed stronger than other materials. Measurement of the Distribution of Site Enhancements in Surface-Enhanced Raman Scattering Ying Fang, Nak-Hyun Seong, and Dana D. Dlott Science 18 July 2008: 388-392. Published online 26 June 2008 [DOI: 10.1126/science.1159499] (in Science Express Reports) The distribution of electric field–enhancing sites on a nanostructured substrate is measured by using the enhanced field to damage those sites. Electronic Publication and the Narrowing of Science and Scholarship James A. Evans Science 18 July 2008: 395-399. As journals become available electronically, scientists and scholars have more articles at their fingertips but cite relatively fewer, and these tend to be more recent. ÏÂÔØµØÖ·£ºhttp://www.namipan.com/d/9e63e56 ... 0fc08b309ce205f1800 |
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