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91.
92.
Alexey V. Borisov Alexander A. Kilin Ivan S. Mamaev 《Regular and Chaotic Dynamics》2011,16(6):653-662
In this paper we develop a new model of non-holonomic billiard that accounts for the intrinsic rotation of the billiard ball.
This model is a limit case of the problem of rolling without slipping of a ball without slipping over a quadric surface. The
billiards between two parallel walls and inside a circle are studied in detail. Using the three-dimensional-point-map technique,
the non-integrability of the non-holonomic billiard within an ellipse is shown. 相似文献
93.
O. V. Borisova M. Yu. Zaremski V. B. Golubev O. V. Borisov L. Billon 《Polymer Science Series B》2011,53(7-8):409-411
With the use of the competitive inhibition method and ESR spectroscopy, it is shown that, in pseudoliving radical polymerization, the rate constant of decomposition of PS and poly(acrylic acid) adducts with nitroxide radicals significantly increases as the polarity of a medium increases. This phenomenon opens a new approach to the activation of chains in nitroxide-mediated polymerization. 相似文献
94.
L. A. Borisov 《Journal of Mathematical Sciences》1999,94(1):1073-1099
This paper proves that there are only finitely many subgroupsH of finite index in Sp(4,Z) such that coresponding quotient
of the Siegel upper half space of rank two is not of general type.
Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya. Tematicheskie Obzory. vol. 56. Algebraic
Geometry-9, 1998. 相似文献
95.
S. V. Borisov N. A. Bliznyuk N. V. Podberezskaya E. S. Kuklina 《Journal of Structural Chemistry》1995,36(3):439-444
Five fluoride structures differing in the character of linkage of cationic polyhedra and in relative water contents are considered. The cationic sublattice is four-layered (ABAC) in K2Cu(ZrF6)2·6H2O, face-centered (F-type, ABC) in CuZrF6·4H2O primitive cubic (P-type) in Cu3(ZrF7)2·16H2O, hexagonal one-layered (AA) in Cu2ZrF8·12H2O and hexagonal two-layered (AB) in Zr2F8·6H2O. Some structures have considerably distorted symmetries of cationic sublattices compared to anhydrous structures because of the anisotropy of cation surroundings in the first, second, and third spheres, but al characteristic close-packed cation planes of the corresponding structural types are retained. In structures with cation-cation distances of ~3.5 Å, dimeric cations are arranged as single fragments for planes with dhkl>3.5 Å or as separate fragments for planes with smaller dhkl. 相似文献
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Experiments were made with annular nozzles with a central rod projecting beyond the nozzle to study the influence of the thickness of the nozzle gap, the curvature of the gap, the conical angle of the sonic nozzle, and the pressure difference on the length of the first roll of an underexparided jet. An expression was obtained for calculating the roll length as a function of these parameters for pressure differences greater than 4.4.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 4, pp. 167–171, July–August, 1980. 相似文献