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Kvinikhidze A. N. Magradze B. A. Khvedelidze A. M. 《Theoretical and Mathematical Physics》1989,78(2):162-167
Joint Institute for Nuclear Research, Dubna. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 78, no. 2, pp. 227–233, February, 1989. 相似文献
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EP Sheretov VS Gurov MV Dubkov OV Korneeva 《Rapid communications in mass spectrometry : RCM》1999,13(16):1699-1702
In this article we compare the classical monopole mass filter of von Zahn and the monopole mass filter with a hyperbolic V-shaped electrode. The experimental results and those of computer simulation for both mass spectrometers are presented. We show that the replacement of a conventional 90 degrees V-shaped electrode by an electrode with a hyperbolic profile substantially improves the peak shape of any given mass, and increases the mass resolution by a factor of 3-4 and the abundance sensitivity by a factor of 100. The potential of high analytical performance combined with electroforming techniques for electrode manufacture indicate future practical uses of such instruments. Copyright 1999 John Wiley & Sons, Ltd. 相似文献
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D. D. Gulamova D. E. Uskenbaev G. Fantozzi J. G. Chigvinadze O. V. Magradze 《Technical Physics》2009,54(6):860-864
Production of superconducting ceramics based on precursors with rated composition Bi1.7Pb0.3Sr2Ca2Cu3O
y
is studied. The precursors are synthesized in a solar furnace by melt rapid quenching. The phase composition of the samples
is examined by microstructural and X-ray analyses. The temperature dependences of the resistance and magnetic susceptibility
are measured. The influence of the composition and crystal structure of the substrate on texturing in the Bi-Sr-Ca-Cu-O system
is studied. It is found that the type of quenching plays a significant role, while the type of substrate is of minor significance. 相似文献
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We study the possibility of expressing the invariant QCD coupling function (i.e., the effective coupling constant) in an explicit analytic form in two- and three-loop approximations as well as in the case of the Padé-transformed -function. Both the timelike and spacelike domains are investigated. Technical aspects of the Shirkov–Solovtsov analytic perturbation theory are considered. Explicit expressions for the two- and three-loop effective coupling functions in the timelike domain are obtained. In the last case, we apply a new method of expanding functions represented in an arbitrary loop order of perturbation theory in powers of the two-loop function. The comparison with numerical data in the infrared region shows that the obtained explicit expressions for the three-loop functions agree fully with the exact numerical results. 相似文献
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The mechanical properties and changes in supermolecular structure during the reorientation of anisotropic polyethylene at various values of the angle between the directions of orientation and tension () were investigated. By comparing the microscopic and dynamometric data it was established that the tension diagrams often have a different physical significance from the usual. It is shown that the morphology and mechanism of the structural changes occurring during reorientation are determined by the value of and are independent of the temperature and elongation rate.Institute of Cybernetics, Academy of Sciences of the Georgian SSR, Tbilisi. Translated from Mekhanika Polimerov, No. 6, pp. 967–975, November–December, 1972. 相似文献
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Gulamova D. D. Karimov A. V. Chigvinadze D. G. Ashimov S. M. Magradze O. V. Bobokulov S. Kh. Turdiev Zh. Sh. Bakhronov Kh. N. 《Technical Physics》2019,64(4):540-546
Technical Physics - The electrophysical properties of semiconductor–superconductor sandwich pairs (InP–Bi/Pb 2223, 2234, 2245) are investigated, in which homophase superconductors based... 相似文献
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Asymptotic analysis of the problem describing deformation ofa thin cylindrical plate with clamped lateral side is performed.The problem is considered under the most general statement withthe plate being laminated and consisting of an arbitrary numberof nonhomogeneous and anisotropic (21 elastic moduli) layers.Explicit integral representations of the differential operatorswhich form the two-dimensional model of the plate are derived.In the case when the elastic moduli of each of the layers areconstant, these integral representations turn into algebraicones. The asymptotic procedure is justified with the help ofa weighted inequality of Korn's type. The error estimates obtainedgive a rigorous mathematical proof of both of Kirchhoff's hypotheses(kinematic and static) and shed light on the well-known intrinsicinconsistency of two of the hypotheses. 相似文献
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