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1.
L. S. Azhgirey V. V. Arkhipov S. V. Afanasiev V. K. Bondarev V. N. Zhmyro L. S. Zolin V. I. Ivanov A. Yu. Isupov A. A. Kartamyshev V. A. Kashirin V. I. Kolesnikov V. A. Kuznetsov V. P. Ladygin N. B. Ladygina A. G. Litvinenko S. G. Reznikov P. A. Rukoyatkin A. Yu. Semenov I. A. Semenova G. D. Stoletov G. Filipov A. N. Khrenov N. P. Yudin 《Physics of Atomic Nuclei》2003,66(4):690-699
The invariant differential cross section, the tensor analyzing power A yy , and the vector analyzing power A y for the reaction 9Be(d, p)X are measured at an initial deuteron momentum of 4.5 GeV/c and a proton detection angle of about 80 mrad. The data obtained for the differential cross section are consistent with the results of measurements at 3.5 and 5.78 GeV/c and a proton emission angle of 2.5°. The values found for the tensor analyzing power A yy are compared with similar data obtained previously for the deuteron-fragmentation process occurring on a carbon target at various values of the initial deuteron momentum and leading to proton emission at zero angle. The data on the differential cross section for the reaction 9Be(d, p)X can be satisfactorily described within the relativistic impulse approximation by using standard deuteron wave functions; however, the approach based on this conceptual framework proves to be inadequate in dealing with data on the tensor analyzing power. These results indicate that it is necessary either to change the method for describing the relativistic deuteron or to take into account additional mechanisms. 相似文献
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A nucleoprotein has been isolated from the gonads of the Caspian sturgeon and its composition has been determined. It has been shown that it contains 55% of DNA, 2% of RNA, 36% of protamines, and about 7% of nonprotamine proteins of nonbasic nature. The nucleoprotein has been hydrolyzed with trypsin, and the amino acid compositions of some hydrolysis products have been studied. On the basis of the results obtained, the hypothesis has been put forward of a possible linkage of the DNA with the basic proteins. It has been shown that protamines react with the DNA through the basic amino acid residues located at various regions of their molecules. 相似文献
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P. S. Anan'in M. Yu. Andreyashkin V. N. Zabaev A. P. Kashirin O. V. Ksendzova G. A. Naumenko V. M. Tarasov 《Russian Physics Journal》1991,34(6):515-521
A technique and experimental apparatus are described for measuring the properties of radiation from relativistic electrons in crystals as a function of frequency and angle. The results of these measurements are compared with calculations and with the results obtained by other workers.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 54–62, June, 1991. 相似文献
4.
N. A. Dontsova Yu. E. Kalinin M. A. Kashirin A. B. Sitnikov 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(10):1296-1299
The electrical properties and magnetoresistance of (Co41Fe39B20) x (CaF2)100 ? x composite are investigated. The principal mechanisms of electric charge transfer at low temperatures are determined. The effective density of localized states at the Fermi level and the average number of localized states between adjacent granules at various concentrations of the metal phase are estimated. 相似文献
5.
V. P. Ladygin L. S. Azhgirey S. V. Afanasiev V. V. Arkhipov V. K. Bondarev G. Filipov A. Yu. Isupov V. I. Ivanov A. A. Kartamyshev V. A. Kashirin A. N. Khrenov V. I. Kolesnikov V. A. Kuznetsov N. B. Ladygina A. G. Litvinenko S. G. Reznikov P. A. Rukoyatkin A. Yu. Semenov I. A. Semenova G. D. Stoletov V. N. Zhmyrov L. S. Zolin 《The European Physical Journal A - Hadrons and Nuclei》2000,8(3):409-416
The tensor Ayy and vector Ay analyzing powers in the inelastic scattering of deuterons with a momentum of 4.5 GeV/c on beryllium at an angle of 80 mr in the vicinity of baryonic resonances excitation have been measured. The Ayy data being in good agreement with the previous results obtained at a zero angle demonstrate an approximate t scaling up to - 0.9 (GeV/c)2. The results of the experiment are compared with the predictions of the multiple-scattering and -meson exchange models.
Received: 20 April 2000 / Accepted: 29 May 2000 相似文献
6.
Yu. E. Kalinin M. A. Kashirin V. A. Makagonov S. Yu. Pankov A. V. Sitnikov 《Physics of the Solid State》2017,59(1):21-27
This work considers the effect of vacuum annealing on the thermoelectric properties of Sb0.9Bi1.1Te2.9Se0.1 thin film and Sb0.9Bi1.1Te2.9Se0.1–C composites with various carbon contents produced by ion-beam deposition in an argon atmosphere. The electrical resistivity and the thermopower of Sb0.9Bi1.1Te2.9Se0.1–C nanocomposites are found to be dependent on not only the carbon concentration but also the type and the concentration of intrinsic point defects of the Sb0.9Bi1.1Te2.9Se0.1 solid solution, which determine the type of conductivity of Sb0.9Bi1.1Te2.9Se0.1 granules. The power factors are estimated for films of Sb0.9Bi1.1Te2.9Se0.1 solid solution and films of Sb0.9Bi1.1Te2.9Se0.1–C composites and found to have values comparable with the values for nanostructured materials on the basis of (Bi,Sb)2(Te,Se)3 solid solutions. 相似文献
7.
A. A. Kashirin S. I. Smagin 《Computational Mathematics and Mathematical Physics》2012,52(8):1173-1185
Three-dimensional Dirichlet problems for the Helmholtz equation are considered in generalized formulations. By applying single-layer potentials, they are reduced to Fredholm boundary integral equations of the first kind. The equations are discretized using a special averaging method for integral operators with weak singularities in the kernels. As a result, the integral equations are approximated by systems of linear algebraic equations with easy-to-compute coefficients, which are solved numerically by applying the generalized minimal residual method. A modification of the method is proposed that yields solutions in the spectra of interior Dirichlet problems and integral operators when the integral equations are not equivalent to the original differential problems and are not well-posed. Numerical results are presented for assessing the capabilities of the approach. 相似文献
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Doklady Mathematics - Fredholm boundary integral equations of the first kind with a single unknown function are considered. Each equation is conditionally equivalent to a scalar diffraction... 相似文献
10.
A model of an amorphous alloy structure of 600 atoms was designed using a RCPSS method. The model cluster was relaxed by using a Morse potential according to the original methodology. Paired and angular correlation functions, distribution histograms of nearest neighbors, and the coherent component of x-ray beam scattering were calculated for the relaxed cluster. The short-range fine structure was analyzed. It is shown that the cluster has a clearly expressed icosahedral character. These results are a logical consequence of the relaxation of a centrally symmetric potential.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 74–79, February, 1992. 相似文献