Browsing Т. 13, № 1 by Submit Date

Now showing items 1-8 of 8

    • Devices and Methods for Measuring of the Ambient Air Dust. Short Review 

      Mukhurov, N. I.; Khodin, A. A.; Kim, Y.-J. (БНТУ, 2022)
      The main characteristics of airborne micro/nanoparticles, their impact on human health and air quality standards are presented. International standards classify microparticles by size (PM10, PM2.5, PM1, UFP), establish maximum allowable concentrations and control methods. Particular attention is paid to carbonand virus-containing microparticles control. To monitor the air environment ...
      2022-04-01

    • Кристалл Er3+,Yb3+:YGdSiO5 для лазеров спектрального диапазона 1,5–1,6 мкм 

      Горбаченя, К. Н.; Ясюкевич, А. С.; Кисель, В. Э.; Толстик, Н. А.; Тараченко, А. А.; Гоман, В. И.; Павловский, Л. К.; Орлович, В. А.; Волкова, Е. А.; Япаскурт, В. О.; Кулешов, Н. В. (БНТУ, 2022)
      Твердотельные эрбиевые лазеры, излучающие в спектральной области 1,5–1,6 мкм, представляют большой интерес для различных практических применений. Из доступных на сегодня лазерных материалов для получения стимулированного излучения в области 1,5 мкм наибольшее распространение получили фосфатные стёкла, легированные ионами Er3+. Однако максимальные выходные мощности таких лазеров ...
      2022-04-04

    • 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

    • Determination of 238U Content by Gamma Radiation Emitting from 234mPa Radionuclide 

      Khruschinski, Arkadiy; Kutsen, Semen; Zhukouski, Alex; Sugai, Naoyuki; Sugai, Hiroshi; Mogi, Michinori (БНТУ, 2022)
      Radionuclide 238U is one of the most important radioactive elements that must be controlled in nuclear power engineering, geological exploration, control of radioactive contamination of soils and raw materials used in construction. The most optimal way to control 238U is to use the 234mPa radionuclide, the activity of which, due to its short lifetime (≈ 1.2 min), is unambiguously ...
      2022-04-05

    • Methods for Accuracy Increasing of Solid Brittle Materials Fracture Toughness Determining 

      Lapitskaya, V. A.; Kuznetsova, T. A.; Chizhik, S. A.; Warcholinski, B. (БНТУ, 2022)
      Method for determining of the fracture toughness of brittle materials by indentation is described. The critical stress intensity factor KIC quantifies the fracture toughness. Methods were developed and applied to improve the accuracy of KIC determination due to atomic force microscopy and nanoindentation. It is necessary to accurately determine parameters and dimensions of the ...
      2022-04-06

    • Method for Increasing of Lens Gluing Technological Process Efficiency and a Reliable Evaluation of Output Controlled Parameters 

      Fiodоrtsev, R. V.; Metelskaya, E. A.; Marchik, V. A.; Kuznetsov, A. V.; Makarevich., A. E. (БНТУ, 2022)
      The use of glued lens components in optical devices improves the image quality of telescopic and photographic lenses or inverting systems by eliminating a number of aberrations, and also reduces light losses in the optical system of the device. The traditional production process of lenses gluing involves the sequential execution of a set of technological operations and takes a ...
      2022-04-06

    • Analysis of Illumination Generated by LED Matrices Distribution 

      Bogdan, P. S.; Zaytseva, E. G.; Baranov, P. O.; Stepanenko, A. I. (БНТУ, 2022)
      Сreation of indoor lighting systems with the possibility of changing its parameters in space and time is a promising direction within the framework of the intellectual environment system. The aim of this work was to create a methodology for calculating the illumination created by LED matrices which does not require the use of specialized software products and is adapted to the ...
      2022-04-06

    • Assessing of a Radiation Therapy Sessionʼs Duration at the Stage of Pre-Radiation Preparation 

      Piatkevich, M. N.; Titovich, E. V. (БНТУ, 2022)
      The treatment planning process includes a review of the radiation treatment plan which leads to a decision on the patientʼs treatment technique. The scope of this study was to create a mathematical model for calculating of a radiation therapy session duration during the pre-radiation planning stage. For dosimetric planning of radiation treatment the authors provided a formula and ...
      2022-04-06