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11.
A. M. Anpilov E. M. Barkhudarov N. K. Berezhetskaya S. I. Gritsinin A. M. Davydov Yu. N. Kozlov I. A. Kossyi M. A. Misakyan S. M. Temchin V. G. Ralchenko P. A. Gushchin E. V. Ivanov 《Technical Physics》2011,56(11):1588-1592
The multielectrode slipping surface discharge in a two-phase water-gas (methane) medium is studied experimentally as a plasma-chemical converter of methane into various hydrocarbons, carbon, and hydrogen. The energy value of methane decomposition is on the order of 5 eV/molecule, which is close to record-high values attained in high-pressure discharges. The degree of conversion of methane is determined and the possibility of its substantial increase is considered. 相似文献
12.
V. A. Gushchin T. I. Rozhdestvenskaya 《Journal of Applied Mechanics and Technical Physics》2011,52(6):905-911
Flow around a two-dimensional circular cylinder of a stratified fluid with periods buoyancy Tb = 25.2 and 6.28 sec is studied numerically over a wide range of Reynolds and Froude numbers. It is found that in the presence of a perturbation
ahead of a cylinder which moves downstream with increasing Reynolds number, the salinity isolines have the shape of a semi-circular
comb with sharp teeth. The shape change of the attached waves and the occurrence of fluid layers of different densities in
the cylinder wake are studied. In flows with a buoyancy period Tb = 6.28 sec at Reynolds numbers Re < 60, stagnant zones are found in the cylinder wake, and at Re > 60, these zones are absent. 相似文献
13.
A. V. Aleksandrov A. Yu. Kosnikov V. L. Antonovskii S. V. Lindeman Yu. T. Struchkov V. V. Gushchin E. K. Starostin G. I. Nikishin 《Russian Chemical Bulletin》1989,38(4):827-831
Conclusions Reaction of stoichiometric quantities of perfluorocyclohexanone and 98% H2O2 in neutral media quantitatively forms ,-dihydroxydi(perfluorohexyl)peroxide, for which the main crystal and molecular structural parameters were determined by x-ray analysis.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 918–923, April, 1989. 相似文献
14.
M. E. Gushchin S. V. Korobkov A. V. Kostrov A. V. Strikovsky 《Journal of Experimental and Theoretical Physics》2004,99(5):978-986
We present the results of our experiments in which the propagation of whistler waves in a plasma with a nonstationary magnetic-field perturbation (B=B0+δB(t), δB/B0 ≤ 5%) was investigated. The parametric and dispersive phenomena in a variable magnetic field were studied on the unique Krot plasma bench (the plasma column was 4 m in length and 1.5 m in diameter). A periodic field perturbation is shown to lead to an amplitude-frequency modulation of the whistler wave and to fragmentation of the signal into separate frequency-modulated wavepackets followed by their compression. The formation and compression of pulses is attributable to strong whistler group-velocity dispersion near the electron cyclotron frequency (ω ≤ ωH). The results can be used to interpret the spectral shapes of the signals received from the Earth’s magnetosphere and ionosphere in the electron and ion whistler frequency ranges. 相似文献
15.
Lapidus A. L. Eliseev O. L. Tsapkina M. V. Belousov O. S. Gushchin V. V. 《Russian Chemical Bulletin》2010,59(9):1834-1835
A doping effect of a Co catalyst with potassium in the Fischer-Tropsch synthesis was found to sharply decrease formation of
methane, increase selectivity on the C5+ hydrocarbons, and increase the chain growth index. 相似文献
16.
R. A. Akhmedzhanov A. A. Bondartsev L. A. Gushchin I. V. Zelensky A. G. Litvak 《JETP Letters》2011,94(12):863-867
Spectral selection, i.e., the separation of a group of particles with a spread in resonance frequencies smaller than the hyperfine
splitting of working levels has been implemented by the method of burning of long-lived spectral dips in the inhomogeneously
broadened absorption line of Pr3+ in a LaF3 crystal. The possibility of implementing qubits (basic elements of quantum computations) on ensembles of spectrally selected
particles and the main operations with them, including the manipulation of the populations of hyperfine (qubit) levels and
the controlled shift of the absorption line of one spectrally selected group of ions upon excitation of another group (two-qubit
operations), has been demonstrated. The decay rates of the population of hyperfine sublevels of the ground state of the spectrally
selected group of particles have been measured. 相似文献
17.
18.
Numerical investigations were made of the propagation, in a supersonic wake, of uncalculated jets, flowing out of nozzles of square and rectangular cross section, and of lumped jets, made up of from two to nine individual jets; the special characteristics of their flow were investigated in the initial, transitional, and main sections. Specifically, for lumped jets, the possibility of replacing them by a single axisymmetric jet, equivalent in mass-flow rate, is discussed. To calculate a three-dimensional unexpanded supersonic jet, flowing out into a wake, in [1] it was proposed to use a numerical method for solving a simplified system of Navier-Stokes equations for steady-state flow, and numerical investigations were made of the three-dimensional interaction of four jets in a supersonic wake, at small distances from the outlet cross section of the nozzle, i.e., mainly in the initial sections of the jets, where the mixing layers along the boundaries of the jets are still not closed. Here the method of [1] is used to study the special characteristics of three-dimensional viscous jets at large distances from the outlet cross section of the nozzle in the region of the main section, where the mixing layers have come together and a single three-dimensional jet has been formed. The system of equations, the boundary conditions, the numerical method, the system of coordinates, and the nomenclature used are the same as in [1]. 相似文献
19.
V. V. Sharutin V. S. Senchurin O. K. Sharutina N. V. Somov A. V. Gushchin 《Russian Journal of Coordination Chemistry》2011,37(11):854-860
The complexes [Bu4N]2+[PtBr6]2− (I), [Ph4P]2+[PtBr6]2− (II), and [Ph3(n-Am)P]2+ (III) are synthesized by the reactions of tetrabutylammonium bromide, tetraphenylphosphonium bromide, and triphenyl(n-amyl)-tetraphenylphosphonium bromide, respectively, with potassium hexabromoplatinate (mole ratio 2: 1). After recrystallization
from dimethyl sulfoxide, complexes I, II, and III transform into [Bu4N]+[PtBr5(DMSO)]− (IV), [Ph4P]+[PtBr5(DMSO)]− (V), and [Ph3(n-Am)P]+[PtBr5(DMSO)]− (VI). According to the X-ray diffraction data, the cations of complexes IV–VI have a slightly distorted tetrahedral structure. The N-C and P-C bond lengths are 1.492(7)–1.533(6) and 1.782(10)–1.805(10)
?, respectively. The platinum atoms in the mononuclear anions are hexacoordinated. The dimethyl sulfoxide ligands are coordinated
with the Pt atom through the sulfur atom (Pt-S 2.3280(18)–2.3389(11) ?). The Pt-Br bond lengths are 2.4330(6)–2.4724(6) ?. 相似文献
20.
R. A. Akhmedzhanov A. A. Bondartsev L. A. Gushchin I. V. Zelensky A. G. Litvak D. A. Sobgaida 《Optics and Spectroscopy》2013,115(3):320-324
The possibility of storage of an optical pulse in a memory based on an atomic frequency comb in a Pr3+:LaF3 crystal is demonstrated experimentally. A new method of storage-time control using an external electric field is proposed and experimentally implemented. 相似文献