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Ohne Zusammenfassung 相似文献
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Let be a compact Riemann surface of genus g, X={x1, ..., xn} a finite set of points, and 1(log X) be the sheaf of 1-forms,holomorphic over \X and generated near xj by dzj/zj for a coordinatezj centred at xj. 相似文献
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Isoperimetric inequalities are applied to a moving-boundaryproblem for doubly-connected domains. This problem occurs forexample in electrochemistry, in which case the domains in questionare the electrolyte of an electrolytic cell. The two electrodessurrounding the electrolyte are assumed to grow or dissolve,at different rates in general, by electrochemical reaction.We obtain optimal estimates showing, for example, that the leastchange in volume of each electrode always occurs in sphericalsymmetry. 相似文献
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S.L. Molodtsov Th. Gantz C. Laubschat A.G. Viatkine J. Avila C. Casado M.C. Asensio 《Zeitschrift für Physik B Condensed Matter》1997,100(3):381-385
A graphite-intercalation compound (GIC) of La was prepared by a thermally induced surface reaction of a metallic La film on a graphite (0001) substrate. The LEED pattern shows a characteristic (√3 × √3) R30° reconstruction pointing to the formation of LaC6. Angleresolved photoemission combined with Fermi-surfaces mapping reveals a strongly anisotropic electronic bandstructure of La-GIC. The unfolded π-symmetry graphitederived bands in the La intercalation compound may be described in good approximation within a simple rigidband model by charge transfer from La to graphite. Despite the presence of filled La-5d states large photoemission intensities close to the Fermi level around the K-points of the nonreconstructed Brillouin zone are related to carbon-derived pπ*-bands, which become partly occupied in the GIC. 相似文献
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