Dubovichenko S.B.,V G Fesenkov Astrophysical Institute Of Nsrtc Nsa Of Rk |
Burtebaev N.,Institute of Nuclear Physics of Kazakhstan |
Zazulin D.M.,Institute of Nuclear Physics of Kazakhstan |
Amar A.S.A.,Al Faraby Kazakh National University
Russian Physics Journal | Year: 2010
A possibility of describing experimental data for the astrophysical S-factor of p6Li capture at low energies is discussed within the potential cluster model with forbidden states. © 2010 Springer Science+Business Media, Inc.
Roidl B.,RWTH Aachen |
Issakhov A.,Al Faraby Kazakh National University |
Meinke M.,RWTH Aachen |
Schroder W.,RWTH Aachen
Notes on Numerical Fluid Mechanics and Multidisciplinary Design | Year: 2012
A synthetic turbulence generation (STG) method for flows at low and high Reynolds and Mach numbers to provide LES inflow boundary conditions of zonal Reynolds-averaged Navier-Stokes (RANS)-large-eddy simulation (LES) method simulations is presented. The present method separates the LES inflow plane into three sections where a local velocity signal is decomposed from the turbulent flow properties of the upstream RANS solution. Depending on the wall-normal position in the boundary layer the local flow Reynolds and Mach number specific time, length, and velocity scales with different vorticity content are imposed on the LES inflow plane. The STG method is assessed by comparing the resulting skin-friction, velocity, and Reynolds-stress distributions of zonal RANS-LES simulations of subsonic and supersonic flat plate flows with available pure LES, DNS, and experimental data. It is shown that for the presented flow cases a satisfactory agreement within a short RANS-to-LES transition of two boundary-layer thicknesses is obtained. © 2012 Springer-Verlag Berlin Heidelberg.
Sultangalieva G.,Al Faraby Kazakh National University
Central Asian Survey | Year: 2014
The institution of pristavstvo was introduced in the Kazakh Steppe in the first decade of the nineteenth century. This institution had different meanings and functions, from an individually held position (e.g., a pristav to the khan of the Junior Horde in 1820; the pristavs who accompanied the Kazakh delegation to Saint Petersburg in the first half of the nineteenth century) to an administrative-territorial structure (e.g., the pristavstvo of the Senior Horde; the Mangyshlak and Zaisan pristavstvos). Though the political structure of the Russian empire had included institutions analogous to the pristavstvo, it was not a conventional component of the Russian administrative system. Studying the features of the pristavstvo institution in the territory of Kazakhstan and analysing the transformation of the pristav's function provide new insights on how the multi-ethnic Russian empire was managed. They will also help scholars to better understand the forms and methods the Russian authorities employed to manage their nomadic populations. © 2014 Southseries Inc.
Sarsembinov Sh.Sh.,Al Faraby Kazakh National University |
Prikhodko O.Yu.,Al Faraby Kazakh National University |
Ryaguzov A.P.,Al Faraby Kazakh National University |
Maksimova S.Ya.,Al Faraby Kazakh National University |
And 2 more authors.
Physica Status Solidi (C) Current Topics in Solid State Physics | Year: 2010
The results of electronic properties and microstructure investigations in amorphous diamond like carbon films (a-C:H) containing different concentrations of silver impurity are presented. The films were prepared by the combined graphite-silver target sputtering in the atmosphere of argon-hydrogen plasma. By the method of transmission electron microscopy it was established that Ag was embedded in the matrix of a-C:H as isolated spherical shape nanoclusters. The average size of the nanoclusters was grown from 2 to 8 nm when silver concentration was ranged from 1 to 20 at. %, respectively. The resonance optical absorption at ∼ 420 nm was revealed in the films. The dependence of films conductivity on Ag content is typical of percolation systems. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.
Drobyshev A.,Al Faraby Kazakh National University |
Aldiyarov A.,Al Faraby Kazakh National University
Low Temperature Physics | Year: 2011
The processes of formation and the properties of ethanol recondensates, formed from a nitrogen cryomatrix during its evaporation, are investigated. Ethanol molecules create matrix-isolated polyagregates due to co-condensation with nitrogen. The matrix evaporation at 35 K is accompanied by recondensation of ethanol from the matrix onto a substrate. This leads to a formation of a highly-dispersive film (recondensate) consisting of agregates of different size including dimers and monomers. IR-spectroscopic investigations of recondensed samples were performed. The condensation temperature was Tc = 12 K. The gas phase pressure in the cryodeposition process was P = 10-5 Torr. The ethanol concentration in nitrogen was from 0.5 to 10%. The film thickness was varied from 1 to 30 μm. The spectral range of measurements was 400-4200 cm-1. From a comparative analysis of oscillatory spectra of samples of ethanol cryocondensates, matrix-isolated ethanol in a nitrogen cryomatrix and ethanol recondensates, we concluded that both polyagregates located previously in a matrix and recondensed onto a substrate are in a glass state. A film heating near the glass point of ethanol (97 K) leads to transitions, which take place in a few steps at different temperatures. Such a character of a warming-up curve is explained by a highly-dispersive composition of recondensates and by a dependence of the glass point of polyagregates on their size. The character of warming-up curves of recondensates allows to speak about grouping of elements of recondensates by their size. In other words, in the process of recondensation and possible further coalescence, polyagregates with preferential sizes, which are energetically optimal for these conditions, are formed. In the considered case it is reasonable to speak about existence of three such sets, involved sequentially in a glass transition. © 2011 American Institute of Physics.