Altai State Technical University
Barnaul, Russia

The leading scientific university of the Altai region, Altai State Technical University is one of a number of universities of the city of Barnaul, Altai Krai, Russia. It is one of the largest institutions of higher learning in Russia.It was founded in February 1942 based on the Zaporozhye Engineering Institute. Altay State University was named after Ivan Polzunov who was the famous Barnaul inventor.The University offers full-time, part-time, extramural and distant training. On graduating students receive degrees of Bachelor and diplomas of specialist. Post-graduate courses are also offered.The facilities of the university include: 7 academic buildings, a complex of hostels, a large scientific library, computing center, publishing house, student clubs, a theater , a preventive clinic, as well as a skiing lodge, sports and rest camp by the river Ob. Wikipedia.

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Gusev A.I.,Altai State Technical University
Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering | Year: 2016

The relevance of the discussed issue is caused by the need of researching petrology, geochemistry and ore mineralization of anorogenic granitoids of Shibelikskii complex which is represented by strong fractionated rocks. Different types of ore mineralization of Zr, Nb, Ta and REE are related to such rocks spatially and paragenetically. The main aim of the research is to study petrology, geochemical features of rocks, accessory mineral zircon and ore mineralization of Shibelikskii areal using the experimental diagrams, which allow revealing the genetic problems and determining physic-chemical features of magamatic and hydrothermal zircon crystals. The methods used in the study. Rare and scattered elements were determined in rocks by inductively coupled plasma method on the mass spectrometer «OPTIMA-4300», the rest elements, including REE, were determined by La-ISP-MS methods in the Laboratory OIGaG SO RAN (Novosibirsk). Chemical elements in zircon were determined by La-ISP-MS mass-spectrometry method with inductively coupled plasma and laser ablation on the mass-spectrometer ELEMENT 2 (Thermo Finnigan Mat) with laser device UP-2B, Nd: YAG (New Wave Research) in the Laboratory OIGaG SO RAN (Novosibirsk). Results. The paper introduces the data on geochemistry and petrology of alkali granitoids and accessory magmatic and hydrothermal zircon of Shibelikskii complex in Gorny Altai. Based on the representative analysis of rocks and zircon the features of granitoids generation, their ore mineralization and typification are determined. The granitoids refer to agpaitic strong fractionation rocks. The tetradic effect of REE M-type fractionation appears in the rocks and in zircon. It is caused by high saturation with fluoro-rich fluids. Increase in meanings of tetradic effect of REE is correlated with the growth of the environment acidity. The author has determined the extreme noncoherence of elements ratio to chondrite and non-conformity of behavior to charge-and-radius-controlled characteristics. Magmatic zircon is characterized by prismatic and pyramid crystal form and high contents of Hf, Y, Sc, and heavy REE. Hydrothermal zircon has higher contents of Nb, Ta and sum of REE.

The paper presents theoretical studies of absorption gas mixture separation under ultrasonic vibrations influence, which provides cavitation and acoustic process intensification. The theoretical studies based on consecutive consideration of this process beginning with single cavitation bubble dynamic which generates shockwave for increasing interface "gas-liquid" and ending with determining absorption productivity providing required concentration of target gas mixture component. In result of the studies, it is evaluated, that cavitation and acoustic intensification increase interface "gas-liquid" up to 3 times with amplitude of oscillations of solid surface 1...2 μm. From the data about surface increasing the analysis of the gas absorption process in the liquid film was performed. For this analysis, the model of gas absorption taking into account surface increasing under acoustic cavitation influence was developed. The model of absorption allows to obtain that the absorption productivity under ultrasonic vibrations influence is increased up to 2 times and more. The obtained results can be used for development of high-efficiency absorption apparatus that is supplemented by ultrasonic influence sources.

Lopatkin N.N.,Altai State Technical University
2016 13th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2016 - Proceedings | Year: 2017

The paper describes some details of the voltage source multilevel inverter space vector PWM algorithm developed on the base of one of the more general algorithms for oblique-angled coordinates of two delta voltages. The instantaneous output voltage waveform simulation has been carried out, and voltage THD and harmonics integral factors dependences on the amplitude modulation index are presented. © 2016 IEEE.

Filimonov V.Yu.,Altai State Technical University
Current Opinion in Chemical Engineering | Year: 2014

It is well known that the industrial processes of composite materials obtaining are costly and energy-intensive procedures. In the last decades, the method of high-temperature synthesis in mechanically activated powder mixtures is widely used. This method gives an opportunity to realize the synthesis in the solid-state mode of combustion and to obtain the nanostructured products. It is of great importance in terms of industrial needs (obtaining of filters, catalysts, low porosity bulk samples, protective coatings and etc.). In the present paper, the analysis of the modern methods of mechanically activated, nanostructured systems obtaining is presented. The methods of synthesis initiation, analysis of phase formation processes, analysis of some experimental results and current concepts of nanostructured heterogeneous systems combustion are considered. © 2013 Elsevier Ltd. All rights reserved.

Popov A.V.,Altai State Technical University
Crystallography Reports | Year: 2016

Metallic lithium is used to demonstrate the possibilities of applying non-self-adjoint operators for quantitative description of orbital excitations of electrons in crystals. It is shown that, the nonequilibrium distribution function can be calculated when solving the spectral problem; therefore, the kinetic properties of a material can also be described with the unified band theory. © 2016, Pleiades Publishing, Inc.

Savchenko V.V.,Altai State Technical University
CEUR Workshop Proceedings | Year: 2014

This article describes a method of semantic search based on the text processing of large volume. Search requests and processing text from analyzed collection is transformed into a graph of semantic relationships, the comparison of which allows us to define a measure of semantic similarity of compared texts. An algorithm is proposed to calculate the coefficient of semantic graphs concordance. Estimates of the processing time are also given.

Krayvanova V.A.,Altai State Technical University
CEUR Workshop Proceedings | Year: 2014

The paper presents the intermediate results of the research, the final goal of which is to develop the universal algorithm for process diagrams automatic visualization by text description of these processes. The purpose of this study is to check the use of verbs as markers for the semantic labeling of long fragments in scientific texts.

Golykh R.N.,Altai State Technical University
Journal of Physics: Conference Series | Year: 2016

Progress of technology and medicine dictates the ever-increasing requirements (heat resistance, corrosion resistance, strength properties, impregnating ability, etc.) for non-Newtonian fluids and materials produced on their basis (epoxy resin, coating materials, liquid crystals, etc.). Materials with improved properties obtaining is possible by modification of their physicochemical structure. One of the most promising approaches to the restructuring of non-Newtonian fluids is cavitation generated by high-frequency acoustic vibrations. The efficiency of cavitation in non-Newtonian fluid is determined by dynamics of gaseous bubble. Today, bubble dynamics in isotropic non-Newtonian fluids, in which cavitation bubble shape remains spherical, is most full investigated, because the problem reduces to ordinary differential equation for spherical bubble radius. However, gaseous bubble in anisotropic fluids which are most wide kind of non-Newtonian fluids (due to orientation of macromolecules) deviates from spherical shape due to viscosity dependence on shear rate direction. Therefore, the paper presents the mathematical model of gaseous bubble dynamics in anisotropic non-Newtonian fluids. The model is based on general equations for anisotropic non-Newtonian fluid flow. The equations are solved by asymptotic decomposition of fluid flow parameters. It allowed evaluating bubble size and shape evolution depending on rheological properties of liquid and acoustic field characteristics.

Lopatkin N.N.,Altai State Technical University
2016 2nd International Conference on Intelligent Energy and Power Systems, IEPS 2016 - Conference Proceedings | Year: 2016

The paper deals with the voltage source multilevel inverter space vector PWM algorithm developed on the base of one of the more general algorithms for oblique-angled coordinates of two delta voltages. The symmetry of the instantaneous output voltages on the clock cycle is provided by the simple control for the performing of the preset five-segment switching sequence. The calculations being used are quite simple and fast so they can be performed even applying a cheap DSP. © 2016 IEEE.

Filimonov V.Y.,Altai State Technical University
Combustion Theory and Modelling | Year: 2015

A novel approach for analysing critical phenomena in exothermically reacting mixtures for arbitrary order of reactions is suggested. Criteria are obtained for the thermal explosion degeneration of reactions characterised by low activation energy (kinetic factor of degeneration) or low heat release (thermodynamic factor of degeneration). Analytical expressions are suggested for the thermal explosion critical conditions taking into account reactants consumption for any reaction order at small values of the Arrhenius parameter (high activation energies). This allows the determination of the characteristic regions in the Todes parameter–Semenov parameter plane and to establish the boundaries of applicability of the classical theory. New thermokinetic parameters are introduced for phase trajectory analysis and a new type of reaction modes diagram is proposed for analysis of self-heating prediction. © 2015, © 2015 Taylor & Francis.

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