Browsing by Publisher: 2022 "БНТУ"

Now showing items 1-20 of 31

    • An Approach to Monitoring of Magnetic Parameters of Cores of a Chain of Spheres. Diagnostics of Different Chain’s Length and Core’s Radius 

      Sandulyak, A. A.; Sandulyak, D. A.; Gorpinenko, Y. O.; Sandulyak, A. V.; Ershova, V. A. (БНТУ, 2022)
      The basic structural elements of the magnetized granular medium (effectively used, in particular, in apparatus of thin magnetic separation) are granule chains (according to channel-by-channel model), in connection with which there is a need to detail the features of their magnetization. The purpose of the work is to develop and implement an approach to measuring magnetic (micro)flows ...
      2022-07-06

    • 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

    • 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

    • 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

    • 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

    • Correction of the Contribution of Scattered Photon Radiation to the Ionization Chamber Readings During X-Ray Radiation Quality Assessment 

      Zaharadniuk, A. A.; Senkovsky, K. G.; Lukashevich, R. V. (БНТУ, 2022)
      Reduction of the systematic error when determining the characteristics of the reference X-ray radiation fields is an essential task according to the ISO 4037-1:2019 standard. This task is especially important in dosimetry laboratories when establishing the qualities of reference photon fields. The aim of the study was to develop a method that allows taking into account the ...
      2022-11-11

    • 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

    • Development of Engineering Models of Nanosatellites for Student Training 

      Evchik, V. Е.; Spiridonov, A. A.; Ushakov, D. V.; Baranova, V. S.; Shalatonin, I. A.; Saechnikov, V. A. (БНТУ, 2022)
      The work purpose is the development of BSUIM-1 and BSUIM-2 complexes for training specialists in the aerospace industry with the used engineering test beds and experimental facilities. Two sets of nanosatellite engineering models and ground stations had developed. They allow testing hardware and software of the onboard equipment and payload, simulating operation modes, and flight ...
      2022-11-11

    • 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

    • Diffuse Reflectance Spectrophotometers Based on C12880MA and C11708MA Mini-Spectrometers Hamamatsu 

      Firago, V. A.; Levkovich, N. V.; Shuliko, K. I. (БНТУ, 2022)
      Diffuse reflection spectroscopy with spatial resolution is a promising direction of non-destructive control of the properties of a number of scattering fine-dispersed materials, including food products. It can find wide practical application only in the presence of compact, easy-to-use and inexpensive spectrophotometric equipment. The aim of the article is to investigate the ...
      2022-07-05

    • Dynamic Features of Spectra of Single and Quasi-Periodic Measuring Signals 

      Suchodolov, U. V.; Isaev, A. V.; Sheinikau, A. A. (БНТУ, 2022)
      Solving the problems of spectral processing of single and quasi-periodic signals in measurement and diagnostic systems is directly related to their isolation against the background of external interference or noise. The purpose of this work was to study single and quasi-periodic signals, i. e. signals limited in time, presented as separate components; development of a mathematical ...
      2022-07-06

    • High-Frequency Capacitor with Working Substance "Insulator–Undoped Silicon–Insulator" 

      Poklonski, N. A.; Anikeev, I. I.; Vyrko, S. A. (БНТУ, 2022)
      The study of the parameters of capacitors with various working substances is of interest for the design and creation of electronic elements, in particular for the development of high-frequency phase-shifting circuits. The purpose of the work is to calculate the high-frequency capacitance of a capacitor with the working substance insulator undoped silicon insulator at different ...
      2022-12-29

    • Influence of Cylindrical Shield Dimensions on Shielding Effectiveness 

      Kanafyev, O. D.; Trukhanov, A. V.; Zubar, T. I.; Grabchikov, S. S.; Panasiuk, M. I.; Kotelnikova, A. N.; Fedkin, V. А.; Fedosyuk, V. M. (БНТУ, 2022)
      Study of dimensional parametersʼ influence on shielding properties of cylindrical shields will allow to optimise the fusion process, as well as to reduce production costs by reducing the material used. The purpose of this work was to compare results of theoretical calculation of shielding effectiveness of an infinite cylindrical shield with the data obtained in real conditions. ...
      2022-07-06

    • 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

    • 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

    • Monte Carlo Simulation of Flash Memory Elements’ Electrophysical Parameters 

      Zhevnyak, O. G.; Borzdov, V. M.; Borzdov, A. V.; Petlitsky, A. N. (БНТУ, 2022)
      Operation of modern flash memory elements is based on electron transport processes in the channel of silicon MOSFETs with floating gate. The aim of this work was calculation of electron mobility and study of the influence of phonon and ionized impurity scattering mechanisms on the mobility, as well as calculation of parasitic tunneling current and channel current in the conductive ...
      2022-12-29

    • Non-Additive Quantity Measurement Model 

      Romanchak, V. M.; Serenkov, P. S. (БНТУ, 2022)
      This work considers a model for measuring non-additive quantities, in particular a model for subjective measurement. The purpose of this work was to develop the measurement theory and form of a measurement model that uses the corrected S. Stevens measurement model. A generalized structure was considered that included an empirical system, a mathematical system, and a homomorphism ...
      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