排序方式: 共有31条查询结果,搜索用时 375 毫秒
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M. B. Gromov O. O. Ivashuk V. Y. Ionidi P. V. Karataev I. A. Kishin A. S. Kubankin A. N. Oleinik A. S. Chepurnov A. V. Shchagin 《Bulletin of the Lebedev Physics Institute》2016,43(11):319-322
A technique for measuring the spatial distribution of X-rays generated by a pyroelectric source is developed and tested. Anisotropy in the spatial distribution of X-rays from the surface perpendicular to the pyroelectric axis of the lithium niobate crystal depending on the piezoelectric crystal axis orientation was detected. The result obtained shows the necessity of considering the effect of piezoelectric properties of pyroelectric crystals on X-ray generation processes. 相似文献
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K. Sadarangani 《Acta Mathematica Hungarica》2002,95(4):253-259
We introduce a weak property () in Aerms of the De Blasi measure of weak noncompactness and prove that this property characterizes the reflexivity. 相似文献
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Belen Lpez Juan Rocha Kishin Sadarangani 《Mathematical Methods in the Applied Sciences》2019,42(1):49-58
In this paper, Lyapunov‐type inequalities are derived for a class of fractional boundary value problems with integral boundary conditions. As an application, we obtain a lower bound for the eigenvalues of corresponding equations. 相似文献
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V.I. Alekseev A.N. Eliseyev E. Irribarra I.A. Kishin A.S. Klyuev A.S. Kubankin R.M. Nazhmudinov S.V. Trofymenko P.N. Zhukova 《Physics letters. A》2019,383(8):770-773
Parametric X-ray Radiation (PXR) produced in powders has been observed for the first time. PXR spectra were measured under observation angles of 150° and 180° during the interaction of relativistic 7 MeV electrons with a tungsten powder. All the PXR peaks that theoretically can be produced in the studied energy region were registered. The performed absolute comparison of the experiment with the PXR kinematical theory from randomly oriented crystallites showed a good accordance. 相似文献
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Dalkarov O. D. Negodaev M. A. Rusetskii A. S. Kirsanov M. A. Kubankin A. S. Kishin I. A. Klenin A. A. Nazhmudinov R. M. 《Physics of Atomic Nuclei》2021,84(2):109-114
Physics of Atomic Nuclei - The possibility of neutron generation by irradiating deuterated crystalline structures with an electron beam with an energy of 20–40 keV was studied. As targets,... 相似文献
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We introduce Erdélyi‐Kober fractional quadratic integral equation with supremum, namely . This equation contains as special cases numerous integral equations studied by other authors. We show that there exists at least one monotonic solution belonging to C[0, 1] of our equation. The main tools in our analysis are Darbo fixed point theorem and the measure of noncompactness related to monotonicity which was introduced by Bana? and Olszowy. Finally, we present an example for illustrating the natural realizations of our abstract results. 相似文献
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J. Harjani K. Sadarangani 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(3-4):1188-1197
The purpose of this paper is to present some fixed point theorems in a complete metric space endowed with a partial order by using altering distance functions. We also present some applications to first and second order ordinary differential equations. 相似文献