Entity

Time filter

Source Type

Minsk, Belarus

Belarusian State Technological University is a University in Minsk, Belarus specialized in engineering and technology. It was established in Gomel in 1930 as the Forestry Institute. In 1941 it was evacuated to Sverdlovsk, now Yekaterinburg. Returned to Gomel in 1944, but in 1946 relocated to Minsk as the Belarusian Institute of Technology. Upgraded to university level in 1993. Currently has 9 departments. Wikipedia.


Giazitzidis P.,Aristotle University of Thessaloniki | Argyrakis P.,Aristotle University of Thessaloniki | Bisquert J.,Jaume I University | Vikhrenko V.S.,Belarusian State Technological University
Organic Electronics: physics, materials, applications | Year: 2014

We consider a simple model for the geminate electron-hole separation process in organic photovoltaic cells, in order to illustrate the influence of dimensionality of conducting channels on the efficiency of the process. The Miller-Abrahams expression for the transition rates between nearest neighbor sites was used for simulating random walks of the electron in the Coulomb field of the hole. The non-equilibrium kinetic Monte Carlo simulation results qualitatively confirm the equilibrium estimations, although quantitatively the efficiency of the higher dimensional systems is less pronounced. The lifetime of the electron prior to recombination is approximately equal to the lifetime prior to dissociation. Their values indicate that electrons perform long stochastic walks before they are captured by the collector or recombined. The non-equilibrium free energy considerably differs from the equilibrium one. The efficiency of the separation process decreases with increasing the distance to the collector, and this decrease is considerably less pronounced for the three dimensional system. The simulation results are in good agreement with the extension of the continuum Onsager theory that accounts for the finite recombination rate at nonzero reaction radius and non-exponential kinetics of the charge separation process. © 2014 Elsevier B.V. All rights reserved. Source


Misyulya D.I.,Belarusian State Technological University
Russian Journal of Non-Ferrous Metals | Year: 2012

An analytical review of recently proposed methods and devices for reducing the pressure loss of cyclone dust collectors is presented. A new design of a blade untwisting device, which decreases the power consumption of the most commonly used TsN-11 and TsN-15 cyclones by 27-29 and 25-27%, respectively, without worsening cleaning quality, is developed. A device with flow recirculation, the application of which results in an increase in cleaning efficiency by ~15% with a decrease in the power consumption of the cyclone, is also proposed. © 2012 Allerton Press, Inc. Source


Lialko A.,Belarusian State Technological University
2015 Open Conference of Electrical, Electronic and Information Sciences, eStream 2015 - Proceedings | Year: 2015

In this work are considered two analytical method of synthesis of control systems for objects with delay: the discrete aperiodic controller offered in R. Izerman's works and the optimal controller received on the basis of square criterion of quality and Bellman's equation. In the synthesis of discrete aperiodic controller sampling period selection in such a way, that the control signal was limited by the maximum allowable value. Synthesis of the optimal controller was carried out on the basis of tracking a reference signal for state space variables. The delay has been expanded in a Pade series of the second order. Estimation of the state-space variables was made by means of the observer calculated on Akkerman's formula on the basis of desired disposition of the poles. © 2015 IEEE. Source


Skarpalezos L.,Aristotle University of Thessaloniki | Argyrakis P.,Aristotle University of Thessaloniki | Vikhrenko V.S.,Belarusian State Technological University
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2014

We investigate the self-intermediate scattering function (SISF) in a three-dimensional (3D) cubic lattice fluid (interacting lattice gas) with attractive nearest-neighbor interparticle interactions at a temperature slightly above the critical one by means of Monte Carlo simulations. A special representation of SISF as an exponent of the mean tracer diffusion coefficient multiplied by the geometrical factor and time is considered to highlight memory effects that are included in time and wave-vector dependence of the diffusion coefficient. An analytical expression for the diffusion coefficient is suggested to reproduce the simulation data. It is shown that the particles' mean-square displacement is equal to the time integral of the diffusion coefficient. We make a comparison with the previously considered 2D system on a square lattice. The main difference with the two-dimensional case is that the time dependence of particular characteristics of the tracer diffusion coefficient in the 3D case cannot be described by exponentially decreasing functions, but requires using stretched exponentials with rather small values of exponents, of the order of 0.2. The hydrodynamic values of the tracer diffusion coefficient (in the limit of large times and small wave vectors) defined through SIFS simulation results agree well with the results of its direct determination by the mean-square displacement of the particles in the entire range of concentrations and temperatures. © 2014 American Physical Society. Source


Markov A.V.,Belarusian State Technological University
Composites: Mechanics, Computations, Applications | Year: 2011

It is shown that in the process of the 3D-forming of sheet, fabric-reinforced thermoplastics, the rheological properties of a material at the processing temperature are responsible for t he stressed-deformed state of the product and, consequently, for the quality of the products obtained. The prediction of the behavior of a material in a viscous-flowing state makes it possible to o ptimize the structure of the reinforced thermoplastics and the parameters of the process of pressin g to at-tain the needed deformation characteristics. The methods of determining the parameters of a power flow of the prepreg at the typical kinds of deformation are suggested. © 2011 by Begell House, Inc. Source

Discover hidden collaborations