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91.
O. P. Galkin A. V. Grinyuk V. N. Kravchenko R. Yu. Popov Yu. V. Semenov Yu. I. Tuzhilkin 《Acoustical Physics》2009,55(2):192-196
The problem of phasing linear hydrophone arrays lying on the bottom of the Barents Sea is discussed by using the results of a full-scale experiment. In the experiment, a pulsed pressure source was used as a source of sound and three linear hydrophone arrays positioned at different sites served as receivers. For signals at the array’s apertures, the spatial correlation interval is estimated. Output responses of the arrays are compared with and without allowance for the spatial correlation interval of the sound field. 相似文献
92.
A. M. Anokhina V. I. Galkin T. A. Dzhatdoev V. V. Nikitina T. M. Roganova 《Moscow University Physics Bulletin》2009,64(6):594-599
Simulation of the interactions between tau neutrinos ντ and the material of the emulsion track detector using Geant4 software is described. The purpose of the work is to generate
artificial events and to estimate, on their basis, the reconstruction accuracy for the geometric parameters (vertex coordinates,
impact parameters, and track kink angles) and distributions of these parameters used in the selection criteria of the OPERA
experiment. 相似文献
93.
E. M. Chainikova R. L. Safiullin I. M. Faizrakhmanova E. G. Galkin 《Kinetics and Catalysis》2009,50(2):174-179
The kinetics of the reactions of phenylnitroso oxide and 4-CH3O- and 4-Cl-phenylnitroso oxides with a series of substituted styrenes (4-X-C6H4-CH=CH2; X = H, CH3O, Cl, CN) in acetonitrile at 22 ± 2°C was studied using the flash photolysis technique. It was shown for 4-CH3O-C6H4NOO as an example that only the trans isomers of the nitroso oxides are involved in the reaction. There is a linear correlation between the logarithm of the rate constant and the electronic properties of the substituent in the nitroso oxide aromatic ring on the Hammett scale: ρ = 2.3 ± 0.3 (r = 0.993) for 4-CH3O-styrene ρ = 2.03 ± 0.07 (r = 0.995) for styrene, and ρ = 1.77 ± 0.05 (r = 0.9996) for 4-Cl-styrene. Both the electron-donating and electron-withdrawing substituents in the aromatic ring of styrene increase its reactivity toward a given nitroso oxide. An analysis of the products of phenyl azide photooxidation in the presence of styrene showed that the product of phenylnitroso oxide [3+2]cycloaddition to the double bond of the olefin decomposes into benzalaniline and carbonyl oxide. 相似文献
94.
The relativistic quark model based on the quasipotential approach with the QCD-motivate potential is employed for the calculation of the form factors of the \(\Lambda _c\rightarrow p\) rare weak transitions. Their momentum dependence is explicitly determined without additional assumptions and extrapolations in the whole kinematical range of the momentum transfer squared \(q^2\). The differential \(\Lambda _c\rightarrow p l^+l^-\) decay branching fractions and angular distributions are calculated on the basis of these form factors. Both the perturbative and effective Wilson coefficients, which include contributions of vector meson resonances, are used. The calculated branching fraction of the \(\Lambda _c\rightarrow p \mu ^+\mu ^-\) rare decay is well consistent with the experimental upper limit very recently set by the LHCb Collaboration. 相似文献
95.
I. V. Galkina L. M. Yusupova A. T. Gubaidullin V. I. Galkin 《Russian Journal of Organic Chemistry》2016,52(5):734-739
Reactions of 4,6-dinitro-5,7-dichlorobenzofuroxane with substituted pyrimidines in aqueous DMSO proceed through an intermediate formation of 5-hydroxy-4,6-dinitro-7-chlorobenzofuroxane owing to the hydrolysis of one of the chlorine atoms with the subsequent formation of pyrimidine salts exhibiting a high biologic action. 相似文献
96.
Aleksandrov A. B. Vasina S. G. Galkin V. I. Grachev V. M. Konovalov A. S. Konovalova N. S. Korolev P. S. Larionov A. A. Managadze A. K. Melnichenko I. A. Okateva N. M. Polukhina N. G. Roganova T. M. Sadykov Zh. T. Starkov N. I. Starkova E. N. Tioukov V. E. Chernyavskiy M. M. Shevchenko V. I. Shchedrina T. V. 《Journal of Experimental and Theoretical Physics》2022,134(4):506-510
Journal of Experimental and Theoretical Physics - A new study of a historical object on the territory of the Russian Federation, the Holy Trinity Danilov Monastery, implemented by the muon... 相似文献
97.
I.A. Nekrasov E.E. Kokorina V.A. Galkin Yu.I. Kuz'min Yu.V. Knyazev A.G. Kuchin 《Physica B: Condensed Matter》2012,407(17):3600-3603
In this paper we present theoretical investigation of optical conductivity for intermetallic TbNi5−xCux series. Within the framework of LSDA+U calculations, electronic structure for x=0, 1, 2 is calculated and additionally optical conductivity is obtained. Disorder effects of Cu for Ni substitution on a level of LSDA+U densities of states (DOS) are taken into account via averaging over all possible Cu ion positions in the unit cell for given doping level x. Gradual smoothing of optical conductivity structure at 2 eV together with simultaneous intensity growth at 4 eV corresponds to increase of Cu and decrease of Ni content. 相似文献
98.
A. L. Galkin 《Journal of Experimental and Theoretical Physics》2012,115(2):201-207
The dynamics of an electron in a relativistically intense laser pulse field is described with the radiation reaction being taken into account. The study is based on solving the Newton equation with the Lorentz and the radiation reaction forces. Validation is provided for an iteration technique which makes it possible to remove the discrepancies found in the theoretical models of radiation reaction. It is demonstrated that an electron having a high initial velocity and colliding head-on with a laser pulse sheds a considerable part of its kinetic energy due to the radiation reaction. A broadening of the electromagnetic pulse emitted by the electron occurs as a result of the same effect. The findings obtained can be used to experimentally verify the effect of radiation reaction. 相似文献
99.
I. V. Galkina G. L. Takhautdinova E. V. Tudrii L. M. Yusupova D. B. Krivolapov I. A. Litvinov R. A. Cherkasov V. I. Galkin 《Russian Journal of Organic Chemistry》2013,49(4):598-602
Stable crystalline σ-complexes (Meisenheimer adducts) were isolated for the first time in the reactions of superelectrophilic 4,6-dinitrobenzofuroxan with dodecyl- and hexadecylamines, and their structure was determined by X-ray analysis. 相似文献
100.
Roustem D. Saikhov Alexander E. Sedych Vladimir I. Galkin Rafael A. Cherkasov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1)
Abstract Previously [1] we have found the possibility of the mechanism alteration for addition of substituted aminophosphonates (RO)2P(O)CHR1NHR2 to PhNCO (where R = alkyles). which depends on the substituents at phosphorus and carbon atoms. We have performed theoretical investigation of basicity and reactivity of alpha- arninophosphonates by PM3 method using HyperChem molecular modeling package, We found that the calculated basicity parameters are in good correlation with our previous experimental data. From the results of the calculations, the whole series can be divided into three subsets: S1 with R1=H and R2=n-Bu; S2 with RI=Ar with electronodonating substituent, R2=cycloHex. S3 with R1=Ar with acceptor substituents, R2=cycloHex. The molecules, which belong to different series, differ in MO distribution on the reaction center NH. The aminophosphinates. containing electrono- withdrawing substituents at both centers (nitrogen and alpha-carbon) are deactivated completely. 相似文献