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51.
D. Yu. Mikhaylov T. V. Gryaznova Yu. G. Budnikova O. G. Sinyashin 《Russian Chemical Bulletin》2010,59(10):1918-1920
Under electrocatalysis conditions, the perfluoroalkylation of α-methylstyrene by the nickel complex NiBr2bipy proceeds with the formation of dimeric products of addition of perfluoroalkyl radicals to the double bond. 相似文献
52.
Boryakov A. V. Nikolitchev D. E. Tetelbaum D. I. Belov A. I. Ershov A. V. Mikhaylov A. N. 《Physics of the Solid State》2012,54(2):394-403
The chemical and phase compositions of silicon oxide films with self-assembled nanoclusters prepared by ion implantation of
carbon into SiO
x
(x < 2) suboxide films with subsequent annealing in a nitrogen atmosphere have been investigated using X-ray photoelectron spectroscopy
in combination with depth profiling by ion sputtering. It has been found that the relative concentration of oxygen in the
maximum of the distribution of implanted carbon atoms is decreased, whereas the relative concentration of silicon remains
almost identical over the depth in the layer containing the implanted carbon. The in-depth distributions of carbon and silicon
in different chemical states have been determined. In the regions adjacent to the layer with a maximum carbon content, the
annealing results in the formation of silicon oxide layers, which are close in composition to SiO2 and contain silicon nanocrystals, whereas the implanted layer, in addition to the SiO2 phase, contains silicon oxide species Si2+ and Si3+ with stoichiometric formulas SiO and Si2O3, respectively. The film contains carbon in the form of SiC and elemental carbon phases. The lower limit of the average size
of silicon nanoclusters has been estimated as ∼2 nm. The photoluminescence spectra of the films have been interpreted using
the obtained results. 相似文献
53.
S. V. Tikhov O. N. Gorshkov I. N. Antonov A. P. Kasatkin D. S. Korolev A. I. Belov A. N. Mikhaylov D. I. Tetel’baum 《Technical Physics》2016,61(5):745-749
The change of the immitance of the metal–insulator–metal memristive structures based on SiOx, which is observed during electroforming and resistive switching, confirms the formation of conducting channels (filaments) in the insulator during forming and their rupture upon a transition of the structure to a highresistance state. The observed switching of the differential capacitance and conductivity synchronously with the switching of current (resistance) can substantially extend the functional applications of memristive devices of this type. 相似文献
54.
The reactions of dimethyl acetylenecarboxylate with 3,4,5,6-tetrahydro-2H-1,2,4-triazepine-3-thiones and 4,5-dihydro-1H-pyrazole-1-carbothioamides are convenient methods for the synthesis of 7,8-dihydrothiazolo[3,2-b][1,2,4]triazepin-3-ones derivatives and methyl esters of (2Z)-[2-(4,5-dihydro-1H-pyrazol-1-yl)-4-oxo-1,3-thiazol-5(4H)-ylidene]acetic acids, respectively. The reaction of methyl propynoates with 4,5-dihydro-1H-pyrazole-1-carbothioamides or with 5,5,7-trimethyl-2,4,5,6-tetrahydro-3H-1,2,4-triazepine-3-thione gives 2-(4,5-dihydro-1H-pyrazol-1-yl)-4H-1,3-thiazin-4-ones. 相似文献
55.
D. I. Tetelbaum O. N. Gorshkov V. A. Burdov S. A. Trushin A. N. Mikhaylov D. M. Gaponova S. V. Morozov A. I. Kovalev 《Physics of the Solid State》2004,46(1):17-21
The possible mechanisms of the influence of implanted impurities of Group III and V elements on the luminescence properties of a system consisting of silicon nanocrystals in SiO2 are considered and generalized. The effect of boron and nitrogen ion implantation on the photoluminescence intensity is investigated experimentally. The experimental results and previously reported data on the ion-implantation doping with phosphorus are discussed in terms of the mechanisms under consideration. The state of implanted phosphorus is determined using x-ray photoelectron spectroscopy. It is shown that the enhancement and degradation of the photoluminescence depend on the type of implanted impurities and the conditions of postimplantation heat treatment. 相似文献
56.
Sergei Avdonin Victor Mikhaylov Alexei Rybkin 《Communications in Mathematical Physics》2007,275(3):791-803
We link the Boundary Control Theory and the Titchmarsh-Weyl Theory. This provides a natural interpretation of the A?amplitude due to Simon and yields a new efficient method to evaluate the Titchmarsh-Weyl m?function associated with the Schrödinger operator H = ?? x 2 + q(x) on L 2(0, ∞) with Dirichlet boundary condition at x = 0. 相似文献
57.
Tetelbaum D. I. Mikhaylov A. N. Belov A. I. Ershov A. V. Pitirimova E. A. Plankina S. M. Smirnov V. N. Kovalev A. I. Turan R. Yerci S. Finstad T. G. Foss S. 《Physics of the Solid State》2009,51(2):409-416
Physics of the Solid State - Photoluminescence, infrared Fourier spectroscopy, Raman scattering, transmission electron microscopy, and electron diffraction were used to study the luminescent,... 相似文献
58.
I. G. Alekseev V. E. Vishnyakov A. I. Golutvin V. S. Goryachev G. B. Dzubenko A. G. Dolgolenko B. V. Zagreev S. M. Kiselev I. E. Korolko G. A. Leksin K. R. Mikhaylov P. A. Polozov M. S. Prokudin D.N. Svirida A. V. Stavinsky V. L. Stolin G. B. Sharkov 《Physics of Atomic Nuclei》2008,71(11):1848-1859
For 12C9Be interactions at a kinetic beam energy of 3.2 GeV per nucleon, the spectra of photons at laboratory angles in the range 55°–73° were measured off the kinematical region available to the interaction of single nucleons within colliding nuclei. The use of a fast trigger for selecting events involving the production of high-transverse-momentum photons made it possible to measure spectra off the kinematical boundary of four-nucleon interaction. It is shown that the proposed procedure is adequate to the problem of searches for and investigation of flucton-flucton interaction. In the kinematical region where flucton-flucton interaction can manifest itself, the cross sections in question are on the same order of magnitude as respective model predictions. In order to draw definitive conclusions on the role of flucton-flucton interaction, it is highly desirable to extend the angular range of the measurements toward smaller angles. 相似文献
59.
Yu. N. Filatov A. D. Kovalenko A. V. Butenko A. M. Kondratenko M. A. Kondratenko V. A. Mikhaylov 《Physics of Particles and Nuclei》2014,45(1):262-264
The possibility of polarized protons acceleration up to 6 GeV at the Nuclotron is analyzed. Proton beam acceleration by application of full and partial Siberian Snakes are considered. Compensation of the betatron coupling introduced by the solenoids is done by a compact insert of quadrupoles with a certain symmetry of their tilt angles around the orbit direction. Such a scheme has a shorter total length of the quadrupoles than the known compensation schemes. The Snakes installed within one, 3.2 m long, or two, 2 × 3.2 m long, straight sections of the Nuclotron lattice are considered. 相似文献
60.
V. M. Borisov V. N. Trofimov A. Yu. Sapozhkov V. A. Kuzmenko V. B. Mikhaylov V. Ye. Cherkovets A. A. Yakushkin V. L. Yakushin P. S. Dzhumayev 《Physics of Atomic Nuclei》2016,79(14):1656-1662
The treatment conditions of fuel claddings of the E110 alloy by using powerful UV or IR laser radiation, which lead to the increase in the corrosion resistance at the high-temperature (T = 1100°C) oxidation simulating a loss-of-coolant accident, are determined. The possibility of the complete suppression of corrosion under these conditions by using pulsed laser deposition of a Cr layer is demonstrated. The behavior of protective coatings of Al, Al2O3, and Cr planted on steel EP823 by pulsed laser deposition, which is planned to be used in the BREST-OD-300, is studied. The methods of the almost complete suppression of corrosion in liquid lead to the temperature of 720°C are shown. 相似文献