Time filter

Source Type

Almaty, Kazakhstan

Almaty University of Power Engineering and Telecommunications is a technical engineering university in Almaty, Kazakhstan. It is located at 126 Baitursynov Street in Almaty and has around 4,000 students. AIPET is one of the most well-known universities in the field of power engineering and telecommunications in the Central Asian region. Students from all over central Asia study at AIPET. They live in three campuses with Wi-Fi internet access, online library and recreation facilities. AUPET is building a third educational case with a new modern athletic field. Undergraduate students can receive a second bachelor's degree in economics from the Moscow Power Engineering Institute simultaneously with studying at AUPET . Wikipedia.

Bimurzaev S.B.,Almaty University of Power Engineering and Telecommunications
Technical Physics Letters

A new principle is proposed for eliminating the energy spread of ions in a packet generated by the ion source of a time-of-flight (TOF) mass reflectron. The ion source is treated as an element of the optic tract, in which the ion trajectories are conjugated with those in the electrostatic mirror, while the primary temporal focus near the source is absent. By properly selecting parameters of the emission-reflection system comprising a combination of the ion source and electrostatic mirror, the total time of ion flight from the source to detector can be controlled so as to be independent of the ion energy. Numerical simulations have been used to find the optimum parameters of a three-electrode electrostatic mirror possessing rotational symmetry, which simultaneously ensure the TOF control (to within third-order terms) and the spatial focusing of ions in the detector plane. © 2014 Pleiades Publishing, Ltd. Source

Ivanov K.S.,Almaty University of Power Engineering and Telecommunications
Mechanisms and Machine Science

Action of robot with modules which have adaptive electric drives is considered. Adaptive electric drive contains electric motor and adaptive connecting gear with two degrees of freedom. The adaptive gear has a form of closed differential mechanism and is extremely simple. It changes a transfer ratio depending on loading continuously only at the expense of mechanical properties and does not demand any control. The equations of adaptive mechanism parameters interconnection are worked out. Definability of the adaptive electric drive motion is confirmed by experimental research. Stop regime of the module motion takes place when working body of the module is motionless. This regime allows to avoid an overloading and to overcome emergencies. In the robot with adaptive drives of modules the stop regime of motion can be overcome at the expense of motions of other modules leading to decrease of resistance. © Springer International Publishing Switzerland 2014. Source

Ivanov K.S.,Almaty University of Power Engineering and Telecommunications | Jilisbaeva K.,Kazakh National University
Mechanisms and Machine Science

Paradox of the mechanism theory has been detected in connection with attempts of practical use mechanism with two degree of freedom and one entry for achievement of power adaptation. According to the mechanism theory and machines such mechanism is statically indefinable. However recently there were patents and publications with the description of efficient two mobile adaptive mechanisms with one entry. Paradox of the mechanism theory consists in the following: the kinematic chain with two degree of freedom and one entry containing the closed contour is statically and kinematically definable. In Ivanov’s works the proof of definability of two mobile kinematic chain motion is resulted on the basis of additional analytical constraint by a virtual works principle. A certain geometrical image comparable to design there should match to analytical additional constraint. The present work is devoted to disclosing of a geometric constraint of parameters of kinematic chain with two degree of freedom and to statement of the mechanism theory paradox in geometrical and an analytic form. Work is executed on the basis of regularities of mechanics and mechanism theory. © Springer International Publishing Switzerland 2014. Source

Heaven S.,University of Southampton | Salter A.M.,University of Southampton | Clarke D.,University of Southampton | Pak L.N.,Almaty University of Power Engineering and Telecommunications
Water Research

Algal waste stabilisation ponds (WSP) provide a means of treating wastewater, and also a potential source of water for re-use in irrigation, aquaculture or algal biomass cultivation. The quantities of treated water available and the periods in which it is suitable for use or discharge are closely linked to climatic factors. This paper describes the application, at a continent-wide scale, of a modelling approach based on the use of readily available climate datasets to provide WSP design and performance guidelines linked to geographical location. Output is presented in regionally-based contour maps covering a wide area of Russia and central Asia and indicating pond area, earliest discharge date, discharge duration, wastewater inflow:outflow ratio and salinity under user-specified conditions. The results confirm that broad-brush discharge guidelines of the type commonly used in North America can safely be applied; but suggest that a more detailed approach is worthwhile to optimise operating regimes for local conditions. The use of long-series climate data can also permit tailoring of designs to specific sites. The work considers a simple 2-pond system, but other configurations and operating regimes should be investigated, especially for the wide range of locations across the world that are intermediate between the 'one short discharge per year' mode and year-round steady-state operation. © 2012 Elsevier Ltd. Source

Bimurzaev S.B.,Almaty University of Power Engineering and Telecommunications
International Journal of Mass Spectrometry

The expressions describing the time-of-flight (TOF) and conditions of TOF focusing of ion packets by energies in the ion source with two accelerating gaps have been obtained. The first gap is the ionization region with a uniform electrostatic field, whereas the second gap is the immersion objective with a non-uniform electrostatic field, where the role of the "cathode" (emitting surface) is played by the exit window of the ionization region. Numerical calculations were used to obtain the ratios between geometric and electrical parameters of three-electrode immersion objectives with two-dimensional and rotational symmetry, determining conditions of four orders of TOF focusing by energy simultaneously with spatial focusing of ion packets. The schemes of time-of-flight mass spectrometers of high resolution and high sensitivity with direct and orthogonal ion injection are presented. © 2014 Elsevier B.V. All rights reserved. Source

Discover hidden collaborations