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排序方式: 共有1008条查询结果,搜索用时 15 毫秒
191.
4OR - In this paper, the class of differentiable semi-infinite multiobjective programming problems with vanishing constraints is considered. Both Karush–Kuhn–Tucker necessary optimality... 相似文献
192.
JPC – Journal of Planar Chromatography – Modern TLC - 相似文献
193.
194.
Sławomir Szafert Tadeusz Lis Krzysztof Drabent Piotr Sobota 《Journal of chemical crystallography》1994,24(3):197-202
FeCl3 in ethyl acetate under the influence of sunlight, undergoes partial reduction yields the [Fe(CH3CO2Et)6](FeCl4)2 salt. The Mössbauer spectra showed that the iron atoms are at +2 and +3 oxidation states. The crystal structure determined by X-ray diffraction methods at 80 K and refined by full-matrix least-squares techniques toR=0.028 for 2410 independent non-zero reflections is in good agreement with the Mössbauer results. The [Fe(CH3CO2Et)6]2+ cations occupy centers of symmetry and the Fe2+ ions are octahedrally coordinated by six carbonyl oxygen atoms of six ethyl acetate molecules. 相似文献
195.
Oksana Yastrubchak Tadeusz Wosiński Elżbieta Łusakowska Tadeusz Figielski Attila L. Tóth 《Mikrochimica acta》2004,145(1-4):267-270
The correlation between the surface cross-hatched morphology and the interfacial misfit dislocations in partially relaxed InGaAs/GaAs heterostructures was studied by means of atomic force microscopy and electron-beam induced current mode in a scanning electron microscope. A close correspondence between the misfit-dislocation network at the interface and the surface morphology shows that the cross-hatch development results primarily from the misfit-dislocation generation. Statistical analysis of the surface roughness reveals an anisotropy in strain relaxation of the epitaxial layers, which results from an asymmetry in the misfit-dislocation formation. 相似文献
196.
197.
The direct reaction between magnesium chloride and iron(III) chloride in tetrahydrofuran (THF) yields the [MgCl(THF)5][FeCl4] complex (I). It is unstable and in reacting with THF undergoes reduction to produce the complex FeCl2(μ-Cl)2Mg(THF)4 (II). Crystals of (II) are orthorhombic, space group Pbcn, with a = 9.18(1) b = 16.30(2) c = 15.85(1)Å. The structure was solved by the heavy atom method and refined by least squares to R = 0.053 for 1194 observed diffractometer data. The molecule is heterobimetallic with an Fe…Mg distance 3.455(3)ǎ and the Fe and Mg atoms are bridged by two Cl atoms. 相似文献
198.
199.
Tadeusz Bałaban John Z. Imbrie Arthur Jaffe 《Communications in Mathematical Physics》1988,114(2):257-315
We continue our program to establish the Higgs mechanism and mass gap for the abelian Higgs model in two and three dimensions. We develop a multiscale cluster expansion for the high frequency modes of the theory, within a framework of iterated renormalization group transformations. The expansions yield decoupling properties needed for a proof of exponential decay of correlations. The result of this analysis is a gauge invariant unit lattice theory with a deep Higgs potential of the shape required to exhibit the Higgs mechanism.Research partially supported by the National Science Foundation under Grant DMS-8602207 and by the Air Force Office of Scientific Research under Grant AFOSR-86-0229Alfred P. Sloan Research Fellow. Research partially supported by the National Science Foundation under Grants PHY-84-13285 and PHY-85-13554Research partially supported by the National Science Foundation under Grant PHY-85-13554 相似文献
200.
Tadeusz Ostrowski 《Linear algebra and its applications》2006,417(1):211-219
In this paper we consider symmetric bimatrix games [A, AT]. We use a matrix operator s(A), defined as the sum of the cofactors of the given matrix A, for finding the population equilibrium and its fitness in evolutionarily matrix games with all supported strategies, and to complete Bishop-Cannings Theorem. 相似文献