Now showing items 285-304 of 7830

    • Parametric amplification of the signals in the electrostatic graviinertial sensor 

      Gilavdary, I.; Mekid, S.; Riznookaya, N. (БНТУ, 2017)
      The challenges of designing simple, reliable, and high sensitivity graviinertial sensors are investigated. The sensor comprises a proof mass (PM) and is fixed with the housing by the elastic torsion suspension. PM makes small rotations under the action of gravitational forces or inertial forces. The distinctive features of the sensor are that the differential electrostatic system ...
      2017-06-09
    • Particularities of Exergy Analysis in Air Conditioning Systems 

      Prokhorov, V. I.; Troyanchuk, S. V.; Razakov, M. A. (БНТУ, 2022)
      The paper examines two methods of choosing the initial reference point for exergy of the moist air flow. The first method is characterized by a zero exergy value at the current temperature and humidity of the outdoor air, which are variable both in daily and annual periods. Another is characterized by constant values of parameters of moist indoor air (its temperature and humidity ...
      2022-02-22
    • A passively modelocked Cr4+: forsterite laser with electronically controlled output characteristics for novel imaging and manipulation systems 

      Zolotovskaya, S. A.; Wilcox, K. G.; Abdolvand, A.; Livshits, D. A.; Rafailov, E. U. (БНТУ, 2011)
      Applicability of electronic control of laser output parameters to bulk solid-state laser sources is demonstrated. A single laser source with variable pulse duration for novel imaging and manipulation systems is presented. Stable passive mode-locking of a Cr4+:forsterite laser using a voltage controlled p-n junction quantum dot saturable absorber was achieved. Output shortening ...
      2012-03-26
    • Pattern Recognition System 

      Fenyes, L. M. (БНТУ, 2005)
      Fenyes, L. M. Pattern Recognition System / L. M. Fenyes // Литье и металлургия. - 2005. – № 2 (34), [ч.2]. - С. 182 - 183.
      2016-03-23
    • Peculiarities of Optoacoustic Excitation and Propagation of Plate Waves in Thin-Walled Оbjects 

      Baev, A. R.; Metskovets, A. I.; Mayorov, A. L.; Asadchaya, M. V.; Vorobey, A. V. (БНТУ, 2023)
      Increasing the efficiency of non-destructive control of lamellar materials with single and double-layer structure is an urgent scientific and technical task. The aim of the work was to investigate the peculiarities of excitation and reception of plate waves (PW) in single-layer and two-layer materials by pulsed laser radiation in relation to detection of cracks in them and ...
      2023-12-12
    • Performance evaluation of metal mould for casting aluminium alloy (AA6063) of scientific products in national agency for science and engineering infrastructure 

      Mohammed, Sh. Abdullahi; Muhammad, T. Abubakar; Chukwuemeka, S. Ibeh; Samuel, C. Anyanwu (БНТУ, 2023)
      The study investigated the major Causes of inconsistency in the cast results of the aluminium cast products from the metal moulds supplied by the then Hungarian Technical Partners to Scientific Equipment Development Institute, Minna. The metal moulds for different scientific products for Schools Scientific Laboratories were to achieve mass production of these products. The aluminium ...
      2023-03-27
    • Perspective reinforcing material for fibre concrete 

      Vedeneev, A. V.; Ignatenko, О. I.; Gritsaenko, V. I. (БНТУ, 2011)
      The different types of wire fiber are considered, advantages of fiber of high-modular wire with heightened bending stiffness are shown. Analysis by volumes of fiber production in the world is carried out. Peculiarities of fiber production at RU P «BMZ» are shown. Recommendations on correlation «wire diameter-fiber length» are given for different types of fiber for prevention of ...
      2014-07-02
    • Photospectral Data Obtaining with the Unmanned Aerial Spectrometry Vehicle 

      Lamaka, A. A.; Gutarau, A. V.; Shcherbakou, N. G.; Ivuts, P. V. (БНТУ, 2023)
      Study of the Earth’s surface objects reflectance characteristics with unmanned aerial vehicles is one of the most actual remote sensing trends. Aim of this work was to develop a method for obtaining of photospectral data using unmanned aerial spectrometry vehicle. An adaptation of the cameras spatial resolution evaluating technique based on a specialized target photographic ...
      2023-04-13
    • PoligonSoft для литейного производства 

      Монастырский, А. В.; Власов, Ю. Б. (БНТУ, 2022)
      В статье рассказывается о системе компьютерного моделирования литейных процессов «ПолигонСофт». Описаны основные возможности системы, рассказано о стадиях работы в ней. Отдельно рассматриваются особенности последней версии программного продукта: что нового в решателе заполнения и напряженно-деформированного состояния, что нового в препроцессоре и сеточном генераторе. Проведен ...
      2022-11-11
    • Possibilities of Using of Surface and Subsurface Waves’ Amplitude-Angle Characteristics for Control of Materials with Surface-Hardened Inhomogeneous Layer 

      Baev, A. R.; Asadchaya, M. V.; Mayorov, A. L.; Sergeeva, O. S.; Delenkovsky, N. V. (БНТУ, 2022)
      Improving the efficiency of ultrasonic control of hardened surface layers of metal products with a heterogeneous structure obtained using different technologies is a pressing problem of industrial production. The purpose of this work was to investigate the possibilities of measuring the depth of the surface inhomogeneous layer of steel objects on the basis of the use of amplitude ...
      2022-12-29
    • Prediction of Dynamic Characteristics of Thermocouples with Thin-Wire Sensing Elements 

      Safina, I. A.; Artemyeva, S. A. (БНТУ, 2022)
      Thermocouples dynamic characteristicsʼ prediction is one of the relevant directions in the field of dynamic measurements of non-stationary temperatures of liquid and gaseous media. Thermocouples dynamic characteristicsʼ prediction makes it possible to provide effective continuous correction in automatic control systems for non-stationary temperatures. The purpose of this paper ...
      2022-07-05
    • Probability of Erroneous Data Registration in a Single Photon Erasure-Type Communication Channel with a Receiver Based on a Photon Counter 

      Timofeev, A. M. (БНТУ, 2022)
      When measuring low-power optical signals, it is necessary to ensure the highest reliability of the received data, which is especially important for single-photon communication channels. This determines the expediency of using photon counters as receiving modules for such channels. They are highly sensitive, but are characterized by data recording errors. Therefore, the purpose ...
      2022-07-06
    • Properties and applications of antifriction silumin 

      Marukovich, E. I.; Stetsenko, V. J. (БНТУ, 2011)
      Antifrictional silumin which excels traditional bronzes in mechanical and tribotechnical properties is developed. Ecologically safe casting technology of billets of 30–300 mm in diameter of antifrictional silumin is created. Their cost is 2–3 times lower than that of similar bronzes. The new technology is introduced in manufacture in the Republic of Belarus.
      2014-07-02
    • Pulsed KGd(WO4)2 Raman laser: towards emission linewidth narrowing 

      Savitski, V. G. (БНТУ, 2015)
      The linewidth of a KGd(WO4)2 pulsed Raman laser is analysed experimentally for different configurations of the Raman and pump resonators: with narrow and broadband pump emission profiles, with and without linewidth narrowing elements in the Raman laser resonator, with and without injection seeding into the Raman cavity. The benefits of a narrow linewidth pump source in combination ...
      2015-07-24
    • Pезультаты краткого сравнительного анализа математических моделей влияния ионосферы земли на сверхширокополосные сигналы x-диапазона 

      Касперович, М. М.; Кондратенок, В. А. (БНТУ, 2015)
      Для формирования дальностного портрета при использовании сверхширокополосного линейно частотно-модулированного сигнала в радиолокационных станциях необходимо учитывать все искажения электромагнитной волны на радиотрассе. При наблюдении за околоземными объектами сигнал проходит через ионосферу. Электромагнитная волна в ней будет подвергаться нелинейным искажениям, которые изменят ...
      2015-08-04
    • Rationale for the Choice of the Ellipsoidal Reflector Parameters for Biomedical Photometers 

      Bezuglaya, N.; Haponiuk, A.; Bondariev, D.; Poluectov, S.; Chornyi, V.; Bezuglyi, M. (БНТУ, 2021)
      Biomedical photometersʼ information-measuring systems with ellipsoidal reflectors have acceptable results in determining of biological tissues optical properties in the visible and near-infrared spectral range. These photometers make it possible to study the optical radiation propagation in turbid media for direct and inverse problems of light-scattering optics. The purpose of ...
      2021-12-21
    • Recycling of Materials for Pavement Dressing: Analytical Review 

      Tingguo, Liu; Zankavich, V. N.; Aliakseyeu, Yu. H.; Khroustalev, B. M. (БНТУ, 2019)
      The paper presents an analytical review of materials recycling for pavement dressing. Recycling or repeated usage of pavement dressing materials while making reconstruction and repair of road pavements is not considered as a new conception and it has been realized in various countries of the world since 20th century. Recycling (hot, cold) is based on methods of its execution, ...
      2019-04-16
    • Reference Input Signals Formation for Induction Motor Control in Traction Drive 

      Opeiko, O. F. (БНТУ, 2023)
      The purpose of this work is to build the analytical improved (with resistances estimation) real time computation of the reference inputs for rotor flux and torque in the vector control system of an induction motor of a traction electric drive. The reference inputs must maximize electromagnetic torque in conditions of voltage source instability, particularly in magnetic field ...
      2023-06-08
    • Refractive index determination for a plane dielectric layer using the measurements of transmitted beam intensity 

      Serdyuk, V. M.; Titovitsky, J. A. (БНТУ, 2017)
      The aim of the present work is the theoretical justification of new refractive index determination technique for a homogeneous transparent plane dielectric layer. It uses intensity measurements for two polarizations of transmitting electromagnetic beam and does not take into consideration phase relationships and phase parameters of testing field at unknown thickness of a layer. ...
      2017-03-02
    • Reinforced Concrete under the Action of Carbonization and Chloride Aggression: a Probabilistic Model for Service Life Prediction 

      Leonovich, S. N.; Shalyi, E. E.; Kim, L. V. (БНТУ, 2019)
      Reinforcement corrosion of marine and coastal hydraulic structures due to chloride aggression and concrete carbonization leads to a sharp decrease in structure safety. The reinforcement is subjected to a depassivation process as soon as a chloride concentration on its surface exceeds a certain threshold concentration, or the pH value in a concrete protective layer is decreased ...
      2019-08-12