Browsing Сериальные издания by Title

Now showing items 61-80 of 7861

    • Calculation of Correction Factors for Vickers Hardness Measurements on a Non-Planar Surface 

      Sandomirski, S. G.; Val’ko, A. L.; Rudenko, S. P. (БНТУ, 2022)
      The exact determination of Vickers HV hardness is important for determining of the product material mechanical properties. An important aspect of measuring HV is to obtain its values on a non-planar surface. Regulatory documents contain table values of correction factors K which depend on the surface shape (convex or concave, spherical or cylindrical), its curvature (diameter D) ...
      2022-11-11

    • Calculation of Heat Exchange on the Surface of a Flexible Heat Exchanger for Use in Mobile Hospitals 

      Iokova, I. L.; Kalinichenko, A. S. (БНТУ, 2020)
      Currently, the world is characterized by quite a large number of military conflicts, manmade disasters and natural disasters. Every year, about 50 thousand people die from various natural disasters in the world. The report of the UNISDR notes that natural disasters that occurred in the world between 1998 and 2017 led to the death of 1.3 million people (more than half of them – ...
      2020-02-05

    • Calculation of Particle Flow Temperature during Plasma Spraying of Mixture Consisting of Self-Fluxing Powder and Ceramics 

      Kalinichenko, A. S.; Krivosheyev, Yu. K.; Meshkova, V. V.; Devoino, O. G. (БНТУ, 2018)
      Plasma spraying is one of the most effective methods allowing both to restore worn surfaces of parts and create wearresistant coatings on new parts aiming the increase of their service life. Properties of the produced coatings depend on number of parameters, such as a plasma temperature, a chemical and fractional composition of the sprayed mixture, a distance from a plasma torch ...
      2018-06-01

    • Calculation of the Effective Energy Release Centerʼs Position of Inorganic Scintillation Detectors for Calibration at Small “Source–Detector” Distances 

      Lukashevich, R.; Fokov, G. (БНТУ, 2021)
      Inorganic scintillation detectors are widely used to measure of dose rate in the environment due to their high sensitivity to photon radiation. A distinctive feature when using such detectors is the need to take into account of the position of the effective energy release center. This peculiarity is actual when using measuring instruments with inorganic scintillation detectors ...
      2021-10-15

    • Calculation of the Effective Energy Release Centerʼs Position of Inorganic Scintillation Detectors for Calibration at Small “Source–Detector” Distances 

      Lukashevich, R.; Fokov, G. (БНТУ, 2021)
      Inorganic scintillation detectors are widely used to measure of dose rate in the environment due to their high sensitivity to photon radiation. A distinctive feature when using such detectors is the need to take into account of the position of the effective energy release center. This peculiarity is actual when using measuring instruments with inorganic scintillation detectors ...
      2021-10-18

    • Cement-Based Materials Modified with Nanoscale Additives 

      Polonina, E. N.; Leonovich, S. N.; Khroustalev, B. M.; Sadovskaya, E. A.; Budrevich, N. A. (БНТУ, 2021)
      The most common and reliable material without which modern construction is indispensable is concrete. The deve- lopment of construction production is pushing for new solutions to improve the quality of concrete mix and concrete. The most demanded and significant indicators of a concrete mixture are the compressive strength and mobility of the concrete mixture. Every year, the ...
      2021-06-07

    • CFD-моделирование аэродинамического профиля лопастей ветроэнергетической установки с вертикальной осью в системе Ansys Fluent 

      Узаков, Г. Н.; Седнин, В. А.; Сафаров, А. Б.; Мамедов, Р. А.; Хатамов, И. А. (БНТУ, 2024)
      В статье представлены результаты исследований по моделированию аэродинамического профиля DU-06-W-200, применяемого в ветроэнергетических установках с вертикальной осью, в системе Ansys Fluent, оценке совместимости с экспериментальными данными и определению оптимального значения угла атаки. Аэродинамический профиль DU-06-W-200 смоделирован с углами атаки в промежутке от –15 до ...
      2024-04-12

    • Chasemill Power – альтернатива дорогостоящему монолитному инструменту 

      Жовтобрюх, В. А. (2018)
      Жовтобрюх, В. А. Chasemill Power – альтернатива дорогостоящему монолитному инструменту / В. А. Жовтобрюх // Инженер-механик. – 2018. – № 3. – С. 26-27.
      2022-09-19

    • City Delivery Routes Planning Based on the Ant Colony Algorithm 

      Olkhova, M.; Roslavtsev, D.; Matviichuk, O.; Mykhalenko, A. (БНТУ, 2020)
      For any company that sells its products in the networks of city stores, the urgent issue is the optimal delivery of their goods. During routing it is necessary to take into account many restrictions caused by specific conditions of transportation process in the city: number of cargoes, nature of cargoes, delivery time, structure of fleet and its presence, work time of enterprises ...
      2020-08-04

    • Common Features of Architectural Design of the Medical Purpose Building 

      Bulakh, I. V. (БНТУ, 2019)
      The paper considers principal features and specific character of architectural design for health care institutions. Main designing stages, missions and complexities for every successive designing step have been revealed in the paper. The paper presents specific features, main stages and design approaches to designing of modern health care facilities, comfortable architectural ...
      2019-08-12

    • Compact 999.6 nm Actively Q-Switched Yb3+:LuAlO3 Laser for Laser-Induced Breakdown Spectroscopy 

      Rudenkov, Alexander; Kisel, Viktor; Yasukevich, Anatol; Hovhannesyan, Karine; Petrosyan, Ashot; Kuleshov, Nikolai (БНТУ, 2019)
      Compact actively Q-switched diode-pumped lasers based on Yb3+-materials are of practical importance for wide range of scientific, industrial and biomedical applications. The aim of this work was to study the Yb3+:LuAlO3 actively Q-switched laser. One of the most promising crystalline hosts for rare-earth ions are Perovskite-like aluminate crystals. Yttrium aluminate crystal YAlO3 ...
      2019-06-27

    • Compact Passively Q-Switched Tm:KY(WO4)2 Laser 

      Kisel, V. E. (БНТУ, 2022)
      Diode-pumped thulium lasers emitting in the spectral range near 2 μm are attractive for applications in different areas: surgery, rangefinding, and environmental atmosphere monitoring. In this article the latest results of Tm:KYW laser performance with a polycrystalline Cr:ZnSe as the most available saturable absorber for 2 μm spectral region are presented. A maximum continuous-wave ...
      2022-04-05

    • Comparative Analysis of Measures and Technical Means for Suppressing the Aperiodic Current Component in Circuit Breaker 

      Kuchanskyi, V. V. (БНТУ, 2021)
      Electromagnetic transients are considered in the implementation of three-phase automatic reclose on the transmission line of extra high voltage 750 kV. The influence of automatic shunting of phases and pre-insertion active resistance for limiting the characteristics of the aperiodic component of the current, which obstructs the transition of full current through zero, is evaluated. ...
      2021-07-21

    • Comparative Study of Fiber Glass Reinforced Polymer and Carbon Fiber Reinforced Polymer on Cube and Cylinder 

      AL-obaidi, A. M. Sh.; Leonovich, S. N. (БНТУ, 2023)
      A comparative analysis of polymers reinforced with glass fiber and polymers reinforced with carbon fiber was carried out on a cube and a cylinder in the laboratories of Baghdad. 36 samples were taken with fiber percentages of 1.0, 2.5 and 5.0 % by weight of cement. The methodology of this study included the use of composite polymer fibers in the external reinforcement of concrete ...
      2023-02-08

    • Compare of Transient Quality in Automatic Control Systems with Classic PID Algorithm and Optimal Regulator 

      Kulakov, G. T.; Artsiomenka, K. I. (БНТУ, 2019)
      Currently, about 90–95% of generic controllers use the PID algorithm to generate control actions, while 64% of the PID controllers are used in single-circuit automatic control systems. Most of industries (power industry among them) use hundreds of automatic control systems. The quality of their work is the basis of economic efficiency of technical processes, ensuring safety, ...
      2019-04-03

    • Comparing Fuel Consumption and Emission Levels of Hybrid Powertrain Configurations and a Conventional Powertrain in Varied Drive Cycles and Degree of Hybridization 

      Maddumage, W. U.; Abeyasighe, K. Y.; Perera, M. S. M.; Attalage, R. A.; Kelly, P. (БНТУ, 2020)
      Hybrid electric powertrains in automotive applications aim to improve emissions and fuel economy with respect to conventional internal combustion engine vehicles. Variety of design scenarios need to be addressed in designing a hybrid electric vehicle to achieve desired design objectives such as fuel consumption and exhaust gas emissions. The work in this paper presents an analysis ...
      2020-02-04

    • Composite Materials Based on Cement Binders Modified with SiO₂ Nanoadditives 

      Khroustalev, B. M.; Leonovich, S. N.; Potapov, V. V.; Grushevskaya, E. N. (БНТУ, 2017)
      Development of nanotechnologies allows to solve a number of problems of construction materials science: increase in strength, durability, abrasion and corrosion resistance that determines operational reliability of building constructions. Generally it is achieved due to nanoparticles that modify the structure and properties of the existing materials or products and are entered ...
      2017-11-26

    • Compositionally Disordered Doped with Cerium Crystalline Garnet Type Materials for Brighter and Faster Scintillations 

      Korzhik, M. V. (БНТУ, 2021)
      Ce-doped tetracationic garnets (Gd, M)3Al2Ga3O12(M = Y, Lu) form a family of new multipurpose promising scintillation materials. The aim of this work was to evaluate the scintillation yield in the materials of quaternary garnets activated by cerium ions with partial isovalent substitution of the matrix-forming gadolinium ions by yttrium or lutetium ions. Materials were obtained ...
      2021-12-22

    • Concept and Methodological Aspects of Providing Balanced Innovative Development of Transportation System of the Russian Federation 

      Geraskina, I. N.; Goncharenko, L. P. (БНТУ, 2020)
      The growth of significance for innovative economic development of the Russian Federation determines necessity of deeper investigation of properties and specific features of its subsystems functioning, content and forms of their interaction, search for increasing efficiency of control systems. The transportation system is the most important strategic link of social and economic ...
      2020-04-01

    • Concept of Vector Multicomponent Physical Quantities, Models and Measurement Method 

      Nesterov, V. N. (БНТУ, 2022)
      The paper presents a new view of vector physical quantities as multicomponent quantities. Each of the components of the mentioned multicomponent quantities can carry important and even unique information about the sources and causes of their occurrence. Looking at the vector quantity as the multicomponent quantity led to the need to form the corresponding conception. There are ...
      2022-12-29