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1.
Nikolai G. Faleev Marina A. Tsvetikova Mikhail M. Ilyin Vyacheslav S. Yufryakov Natal’ya G. Kolotyrkina Viktoria V. Kulikova Tatiana V. Demidkina Konstantin A. Kochetkov 《Mendeleev Communications》2021,31(2):236-238
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The boron atom in C22H15BO5 is O,O’-chelated by the anions in a tetrahedral geometry, with the planar five-and six-membered chelate rings being orthogonal to each other. The molecule lies on a two-fold rotation axis. The molecule is disordered with respect to another molecule in a 93:7 ratio; the treatment of the ‘whole-molecule disorder’ by employing a large number of restraints is described. Crystal data: C22H15BO5, monoclinic C2/c, a = 17.1804(5), b = 12.9409(4), c = 9.8842(3) , β = 124.832(2)o, V = 1803.82(9) 3 at –173 K. 相似文献
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M. V. Baidakova A. Ya. Vul’ V. I. Siklitskii N. N. Faleev 《Physics of the Solid State》1998,40(4):715-718
Ultradisperse-diamond clusters are shown to be fractal objects, and the character of variation of the fractal dimension in
the course of the diamond-graphite phase transition under annealing in an inert atmosphere is studied.
Fiz. Tverd. Tela (St. Petersburg) 40, 776–780 (April 1998) 相似文献
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A general formulation of the nonlinear filtering problem inRiemanman manifolds is given by use of the strong solutionsof the stochastic differential equations for the state and observationprocesses in the orthonormal frame bundles of the state andobservation process manifolds, respectively. A general Bayesformula for the conditional expectation of smooth functionsof the state process is given. This is used to give a directderivation of the Zakai equation for the general problem underconsideration. An example is presented. 相似文献
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GaAs-AlAs superlattices with InAs quantum dots grown by molecular beam epitaxy have been studied by high-resolution X-ray
diffractometry. It has been experimentally revealed that the maxima of the superstructural diffuse scattering from the quantum
dots do not coincide with the angular positions of the coherent superstructural satellites. A statistical theory of diffraction
on the superlattice taking into account the spatial correlation of the quantum dots has been developed to explain this effect.
It has been shown within this theory that the peak positions of the diffuse component can differ from the maxima of the coherent
scattering. X-ray scattering by the multicomponent superlattice have been numerically simulated and the calculation results
have been compared with the experimental data. 相似文献
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We obtain rigidity results on arbitrary proper holomorphic maps F from an irreducible bounded symmetric domain Ω of rank ≥2 into any complex space Z. After lifting to the normalization of the subvariety F (Ω) Z, we prove that F must be the canonical projection map to the quotient space of Ω by a finite group of automorphisms. The approach is along the line of the works of Mok and Tsai by considering radial limits of bounded holomorphic functions derived from F and proving that proper holomorphic maps between bounded symmetric domains preserve certain totally geodesic subdomains. In contrast to the previous works, in general we have to deal with multivalent holomorphic maps for which Fatou’s theorem cannot be applied directly. We bypass the difficulty by devising a limiting process for taking radial limits of correspondences arising from proper holomorphic maps and by elementary estimates allowing us to define distinct univalent branches of the underlying multivalent map on certain subsets. As a consequence of our rigidity result, with the exception of Type-IV domains, any proper holomorphic map f : Ω→ D of Ω onto a bounded convex domain D is necessarily a biholomorphism. In the exceptional case where Ω is a Type-IV domain, either f is a biholomorphism or it is a double cover branched over a totally geodesic submanifold which can be explicitly described. 相似文献