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排序方式: 共有137条查询结果,搜索用时 15 毫秒
1.
O. P. Bobrov S. N. Laptev H. Neuhäuser V. A. Khonik K. Csach 《Physics of the Solid State》2004,46(10):1863-1867
Isochronous relaxation of tensile stresses is measured in a bulk Pd40Cu30Ni10P20 metallic glass in the initial state and after certain thermal treatments. The results of measurements are used to find the energy spectrum of irreversible structural relaxation, from which the temperature dependence of shear viscosity is then calculated. This dependence is also found independently from measurements of creep in the same glass. The calculated viscosity is shown to agree well with the experimental data. 相似文献
2.
3.
Rupert L. Frank Ari Laptev Elliott H. Lieb Robert Seiringer 《Letters in Mathematical Physics》2006,77(3):309-316
Inequalities are derived for power sums of the real part and the modulus of the eigenvalues of a Schrödinger operator with a complex-valued potential. 相似文献
4.
Alexei Yu. Lukin Sergei V. Shevyakov Alexei V. Laptev Olga I. Davydova Vitali I. Shvets Olga V. Demina Yury P. Strokach Valery A. Barachevsky Michail V. Alfimov Sergei P. Gromov Artem I. Vedernikov Johan Lugtenburg Andrey A. Khodonov 《Journal of inclusion phenomena and macrocyclic chemistry》2004,49(1-2):153-161
An effective synthetic approach to the preparation of a new crown-ether vinylogs involving the Horner–Emmons olefination of carbonyl precursors with the use of C2- and C5-phosphonates was proposed. The effects of the conjugation chain length and the nature of the terminal polar functions in the phosphonate reagent on the yield and process stereoselectivity were discussed. 相似文献
5.
Mathematical model of gas treatment to remove a finely dispersed phase, based on the theory of turbulent migration of particles, is discussed. In the approach used, the aerosol separation is considered as a kind of a diffusion process using equations of the mass transfer theory. Expressions are presented for calculating the gas cleaning efficiency in tubular, vortex, and packed gas separators. A specific feature of these expressions is that the calculations can be performed using the hydraulic resistance of the working zone of the apparatus. 相似文献
6.
Alexey V. Laptev Dmitrii E. Pugachev Alexey Yu. Lukin Andrei V. Nechaev Nikolay E. Belikov Olga V. Demina Petr P. Levin Andrey A. Khodonov Andrey F. Mironov Sergei D. Varfolomeev Vitalii I. Shvets 《Mendeleev Communications》2013,23(4):199-201
A new 5,10,15,20-tetrasubstituted porphyrin containing four 6’-nitro-1,3,3-trimethylspiro(indolino-2,2’-2H-chromene) substituents and its complexes with Zn2+ and Cu2+ ions were prepared and characterized by physicochemical methods of analysis. 相似文献
7.
Konstantin P. Arefyev Victor I. Grafutin Evgeny P. Prokopyev Andrey M. Lider Roman S. Laptev Yury S. Bordulev 《Central European Journal of Chemistry》2014,12(12):1280-1284
This article considers the possibility of applying the positron annihilation spectroscopy method for investigating the pore space of rocks from oil-gas and methane-coal deposits. The diagnostics of the structure was performed using the method of spectrometry of angular correlation of annihilation rays (ACAR). Using the samples of porous silicon, the authors have shown the applicability of the ACAR method for determination of the average dimensions of spherical and cylindrical nanosized objects and their concentration 相似文献
8.
V. D. Laptev 《Journal of Mathematical Sciences》2009,158(2):211-218
This paper suggests several methods for constructing two-scaled extensions for arbitrary rapidly oscillating functions. Special
attention is paid to the continuity (smoothness) of extensions. The author discusses the scheme of applications of extensions
to homogenization problems in non-periodic perforated domains and describes the difficulties arising in this case.
Translated from Sovremennaya Matematika i Ee Prilozheniya (Contemporary Mathematics and Its Applications), Vol. 54, Suzdal
Conference–2006, Part 2, 2008. 相似文献
9.
Ari Laptev 《Journal of Mathematical Sciences》2009,159(1):1-3
It is a great pleasure for me to write about Nina N. Uraltseva who has been one of the most supportive persons during all
my scientific career. I have learned from Nina very many things starting from the foundations of Mathematics to how to prepare
Swedish gravad lax (salted salmon). Nina is one of the most wholly beautiful persons I have ever met and, together with all
the contributors of these anniversary issues of “Problemy Matematicheskogo Analiza,” I wish her many healthy and active years
ahead.
Translated from Problemy Matematicheskogo Analiza, 40, May 2009, pp. 3–6. 相似文献
10.