Beisebay P.B.,S. Seifullin Kazakh Agro Technical University |
Aruova A.B.,S. Seifullin Kazakh Agro Technical University |
Akzhigitov E.,S. Seifullin Kazakh Agro Technical University |
Tilepiev M.S.,S. Seifullin Kazakh Agro Technical University
International Journal of Heat and Mass Transfer | Year: 2017
The paper is devoted to the questions of mathematical modeling of heating processes in hydrodynamics, namely to development and to mathematical justification of numerical algorithms for solving three-dimensional equations of free convection in natural variables. The purpose is to research implicit iterative schemes for the numerical solution of Boussinesq-type fixed (stationary) equations. The research uses mathematical modeling, mathematical programming, the Visual Fortran programming language, and the Axum 7.0 graphics program. Computational mathematics and functional analysis methods are used for the mathematical argumentation of iterative algorithms. The questions of convergence and estimate of a degree of convergence of one nonlinear splitting algorithm are considered, made for the difference analogues of the system of free convection steady-state equations in variables “velocity vector and pressure”, written to shifted grids with symmetric approximation. The implicit iterative splitting algorithms for the difference analogues of the system of free convection steady-state equations in variables “velocity vector and pressure” are considered, written to shifted grids with symmetric approximation. The problems of stability of the difference problems according to the initial data and the right member, convergence and estimate of the linear algorithm degree of convergence were studied. The results of this research can be useful in studies on difference schemes for hydrodynamic equations; they can also be used to further develop the theory of numerical solution of mathematical physics problems. The research results may be used in information system development for the automation of heat-aggregation exchange problem solving and as a teaching material for students learning mathematics, mechanics, and IT technologies. © 2016 Elsevier Ltd
Gruzin A.V.,Omsk State Technical University |
Gruzin V.V.,S. Seifullin Kazakh Agro Technical University |
Shalay V.V.,Omsk State Technical University
Procedia Engineering | Year: 2016
The development of technologies for a directional soil compaction is a new prospective task which solving will enable to obtain the required carrying capacity of soil foundations with a rational use of construction materials and to provide a trouble-free operation of engineering structures. Theoretical researches were carried out to study characteristics of physical and mechanical processes of an impact action for rammers operating elements on foundation soils for oil and oil products storage tanks. In the course of the conducted analytical studies of the dynamics for a conic model impact action on a dispersed noncohesive soil we obtained the dependence of the model's motion velocity change on impact parameters. The increase of the model impact velocity from 0.47 to 1.40 m/s resulted in the reduction of interaction process duration in a "model-soil" system from 90 to 56 ms. © 2016 The Authors.
Goponenko A.S.,Tomsk Polytechnic University |
Stukach O.V.,Tomsk Polytechnic University |
Mirmanov A.B.,S. Seifullin Kazakh Agro Technical University |
Kochumeev V.A.,Tomsk Polytechnic University
International Conference on Systems, Signals, and Image Processing | Year: 2014
This paper describes the design of Gunn diode hybrid-integrated power transmitter at X-band. The device delivers about 15 Watt of pulse output power, in short-pulse operating conditions, at 9.5-10.5 GHz central frequency. The transmitter is designed to be used as final stage of a downlink measurement-while-drilling transmitter for telemetry system. A commercial Gunn diode has been selected for design. Due to the MWD application, special attention must be put on the process and reliability: to this aim temperature of the active device must be kept within the value established by borehole requirements and carefully controlled. This makes the design objective very tight. The power transmitter design and some measurement results are presented in the paper. © 2014 University of Zagreb.
Mirmanov A.B.,S. Seifullin Kazakh Agro Technical University |
Stukach O.V.,Tomsk Polytechnic University
Proceedings of 2014 International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2014 | Year: 2014
In the paper, the general problem of design of measurement while drilling telemetry systems with the communication radio channel in a drilling pipe is considered. Urgency of the use of microwave video pulse radio signals for data transfer is evaluated. Estimation of the signal attenuation in the drilling pipe filled with the conductivity media is carried out. The general structure of system is considered and its modeling in the Matlab Simulink software is carried out. Qualitative comparison of results with experimental data is investigated. © 2014 IEEE.
Uskenbayev D.E.,S. Seifullin Kazakh Agro Technical University |
Nogay A.S.,S. Seifullin Kazakh Agro Technical University |
Aynakulov E.B.,S. Seifullin Kazakh Agro Technical University
IOP Conference Series: Materials Science and Engineering | Year: 2016
The results of the study on the synthesis of high-temperature superconductors in the system Bi-Pb-Sr-Ca-Cu-O based on amorphous precursors were considered in this article, and were obtained under the influence of the radiant flux. A study of the elemental composition of amorphous precursors has showed the presence of 20 at.% superstoichiometric oxygen. The increase in the rate of formation of the superconducting phase and the high texture of the particles in the ceramic samples along the plane [00I] were established. The synthesized samples were composed of superconducting phase Bi1,7Pb0,3Sr2Ca2Cu3Oy. Research has established a presence in samples of HTSC phase with Tc up to 181K.
Sapargaliyev D.,International Academy of Business |
Jetmekova A.,S. Seifullin Kazakh Agro Technical University
Proceedings of the European Conference on e-Learning, ECEL | Year: 2013
This paper describes an empirical study, which analyzes the quantitative data obtained from a survey by students at Kazakh Agro Technical University in Astana. The aim of our survey was to determine how the use of the social network VKontakte can help in studying the Sociology course. We studied the experience of use of social media in education systems of the former Soviet Union states. The results showed that the use of social networks for learning is still at an early stage of development. In September 2012 we created an educational group 'Sociology (Astana)' on the social network VKontakte. This social network is the most popular among students of Kazakhstan. We created five topics for seminars. After completion of the Sociology course, which lasted four months (from September to December 2012), we conducted a survey among 100 students. The survey data demonstrates that about a third of students had already used social network VKontakte for learning. Many students use not only personal computers for access to the educational group 'Sociology (Astana)' but also use mobile devices, in particular mobile phones. Students were actively involved in network discussions; they regularly added new comments, videos and other learning materials. Students noted that participation in the educational group VKontakte helped to develop a good relationship among classmates. The results of our study can be used by educators to further research work devoted to the use of social networks in Kazakhstani universities.
Altaibaeva Z.,Innovative University of Eurasia |
Bauer-Kenzhebolatova M.,S. Seifullin Kazakh Agro Technical University |
Zhaltyrova O.,Innovative University of Eurasia
International Journal of Economics and Financial Issues | Year: 2016
The article presents flour production behavior in the Republic of Kazakhstan, flour export by countries, wheat flour and bread prices. The authors have analyzed the raw materials base of the flour-milling industry (acreage, yield, crop page). Flour is the most important grain-processing product. It is a raw material for the production of such irreplaceable foodstuffs as bread, bake and paste goods that meet an essential part of human daily needs in vital energy and nutrients. Kazakhstan has a substantial grain and flour export potential. Flour export is important for the grain industry of the Republic, and economy of the country in whole. The country ranks among the six biggest grain exporters in the world. This is because Kazakhstani grain has high milling property, and the quality of Kazakhstani flour is rated high in many countries. It enables Kazakhstani flour to be competitive on the world market and to ensure end markets in different countries. Kazakhstani flour is exported mainly to Uzbekistan, Afghanistan and Tajikistan (90-92% of flour export). A part of local flour is exported to Kirgizia, Turkmenistan and Mongolia. Kazakhstan rapidly develops its grain-processing industry. Grain processing means not only flour production, it includes motor and railway transport, internal and external commercial operations, electricity consumption, etc. The authors present priorities and solutions for the flour-milling industry. © 2016, Econjournals. All rights reserved.
Maikanov B.S.,S. Seifullin Kazakh Agro Technical University |
Auteleyeva L.T.,S. Seifullin Kazakh Agro Technical University
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2016
Article shows the results of amino-acid composition of protein in cow's milk which were selected from farms adjoining to the territory of a falling of the RC "Proton-M" of the Ulytau area, Karaganda region of the Republic of Kazakhstan. The identification of amino acids has been carried out on a liquid chromatography SHIMADZU LC-20 Prominence (Japan) with a fluorometric and a spectrophotometric detector. There were also applied the chemical-analytical studies on the liquid chromatograph "Zvet Yauza" with the amperometric detection. According to the research it was established that there were reliable differences comparing with the normal vales in the content of all irreplaceable and replaceable amino acids in tests of a milk protein. The sum of amino acids of milk protein was 12,2% lower in comparison with the normal values. The limiting amino acids in the studied milk were methionine+ cystine and phenylalanine + tyrosine. © 2010 RJPBCS.
Ospanova S.,S. Seifullin Kazakh Agro Technical University |
Bukeeva A.,S. Seifullin Kazakh Agro Technical University
Biology and Medicine | Year: 2015
We have determined biological properties of the hybrid strain producing anti-idiotypic antibodies (AIAT) against immunoglobulins specific for the lipopolysaccharide of Brucella antigen after deep freezing during the in vitro and in vivo cultivation. From the cultural and ascitic medium, we got monoclonal preparations of anti-idiotype antibodies by the method of ammonium sulfate salting and chromatography. In the reaction of immunoblotting and enzyme immunoassay, we have determined specific interaction of AIAT with brucellosis-positive sera of rabbits and cattle. This fact suggests that they may be used as an analog of the original antigen. © 2015 Ospanova et al.
Stukach O.V.,Tomsk Polytechnic University |
Mirmanov A.B.,S. Seifullin Kazakh Agro Technical University
2014 Dynamics of Systems, Mechanisms and Machines, Dynamics 2014 - Proceedings | Year: 2015
This paper describes the power stage of downlink of measurement-while-drilling (MWD) telemetry system. Design of this system is modern direction in geo- and radiophysics due transition to a new communication channel between drilling point to surface. The device is the X-band Gunn diode hybrid-integrated power amplifier-transmitter. Its advantage is high efficiently and low current from bias. The pulse output power is about 15 Watt in short-pulse operating conditions, at 9 GHz central lobe frequency. Due to the MWD application, the special attention pays to circuit and repeatability of characteristics. Design and packaging is very tight and give a possibility to put device into the drilling gun. The experimental bench and some measurement results are presented in the paper. In particular, output power and frequency of the center lobe as function of voltage and current of transmitter is shown. © 2014 IEEE.