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141.
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We define a 4-parameter family of generically irreducible and inequivalent representations of the Witt Lie algebra on which the infinitesimal rotation operator acts semisimply with infinite-dimensional eigenspaces. They are deformations of the (generically indecomposable) representations on spaces of polynomial differential operators between two spaces of tensor densities on S
1, which are constructed by composing each such differential operator with the action of a rotation by a fixed angle. 相似文献
143.
Christiane Rabe 《Nachrichten aus der Chemie》2007,55(4):472-473
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We report 28 German patients with contact granuloma (27 male, 1 female). Their mean age was 52 years (ranging from 35 to 70). Thirty-two percent were retired. The occupations of the others represented a wide range of different jobs. The majority of the sample had a middle educational level. Most patients lived with their family or with a partner. According to self-assessments, 68% had average daily strain on their speaking voice. All patients were nonsmokers. The patients felt themselves more disturbed by somatic troubles as the general population. Heartburn was felt by nearly half of the patients. A little more than half of the patients suffered from globus sensation. Thus, it is not possible at present to explain the laryngeal contact granuloma by sociodemographic data, vocal stress, or special somatic complaints in this sample. Therefore a multifactorial etiology should be supposed. 相似文献
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Christiane A. Helm 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》1994,106(14):1591-1591
150.
The synthesis and crystal structure of Cs3Mn[Nb6Cl9O3(CN)6]0.6H2O are described in this work. It crystallizes in the cubic system (space group Fm-3m; a=15.708(5) Å) and is characterized by a static orientational disorder of the [Nb6Cl9O3(CN)6]5− cluster units. It results in a framework structurally related to that encountered in the well known Prussian Blue family prepared for different hexacyanometallates. The charge of the framework is compensated by cesium cations that are located in the tetrahedral cavities of the c.f.c. lattice of units along with water molecules. We will evidence the features that act in the crystallization of solid state compounds built up from ordered or disordered units as well as the influence of orientational disorder on interatomic distances obtained from single-crystal X-ray diffraction investigations. 相似文献