Physics and Astronomy: Недавние поступления

Отображаемые элементы 281-300 из 794

    • Transit cosmological models in F(R, T) gravity theory 

      Maurya, Dinesh Chandra; Myrzakulov, Ratbay (Eurasian Physical Technical Journal C, 2024)
      2025-01-27

    • Total reaction cross sections of neutron-rich light nuclei measured by the COMBAS fragment-separator 

      Erdemchimeg, B.; Artukh, A.G.; Davaa, S.; Hue, B.M.; Isataev, T.; Klygin, S.A.; Kononenko, G.A.; Khuukhenkhuu, G.; Lukyanov, S.M.; Mikhailova, T.I.; Maslov, V.A.; Mendibaev, K.; Sereda, Yu.M.; Penionzhkevich, Yu.E.; Vorontzov, A.N. (Eurasian Journal of Physics and Functional Materials, 2019)
      2025-01-27

    • TIME-RESOLVED LUMINESCENCE EXCITED WITH N2 LASER OF YAG:CE CERAMICS FORMED BY ELECTRON BEAM ASSISTED SYNTHESIS 

      Karipbayev, Zh.; Alpyssova, G.; Mussakhanov, D.; Lisitsyn, V.; Kukenova, A.; Tulegenova, A. (Eurasian Physical Technical Journal, 2020)
      In this paper, an attempt to synthesize the phosphor using powerful hard radiation fluxes. White light-emitting diodes (LEDs) are considered a good lighting devices due to their unsurpassed qualities, such as energy saving and long service life. The synthesized ceramics has the characteristic properties of YAG: Ce, YAGG: Ce phosphors. In total, 10 types of phosphors were ...
      2025-01-27

    • Time-of-flight fission fragment spectrometer of the MAVR facility 

      Aznabayev, D.; Lukyanov, S.M.; Zeinulla, Zh.; Issatayev, T.; Maslov, V.A.; Mendibayev, K.; Melnik, E.V.; Smirnov, V.I.; Stukalov, S.S.; Shakhov, A.V. (Eurasian Journal of Physics and Functional Materials, 2021)
      2025-01-27

    • Thick target inverse kinematics approach for neutron emission 

      Goldberg, V. Z.; Gazeeva, E. M.; Golovkov, M. S.; Bezbakh, A. A.; Nauruzbayev, D. K.; Nurmukhanbetova, A. K.; Kurmanaliyev, Zh.; Serikov, A.; Zalewski, B.; Rogachev, G. V. (PHYSICAL REVIEW RESEARCH, 2020)
      We applied the thick target inverse kinematics method for a study of resonances decaying through neutron emission. In this approach, the time of flight of the resonant neutrons is defined by the movement of the heavy ions of low-energy beams through an extended target. As a test, we used a well-studied, because of its role in the s process in stars, 13C(α, n) reaction. The ...
      2025-01-27

    • The study of the applicability of invar nanostructures for the reduction of p-nitrophenyl compounds 

      Borgekov, D.B.; Zdorovets, M.V.; Shlimas, D.I.; Kozlovskiy, A.L.; Khlebnikov, N.A.; Kaniukov, E.Yu. (Eurasian Journal of Physics and Functional Materials, 2020)
      The results of the study of the phase composition of iron-nickel nanostructures susceptible to electron irradiation on the catalytic reduction of p-nitrophenyl compounds are presented. In the course of the studies, it was found that the nanostructures irradiated with a dose of 250 kGy, which are characterized by the presence of two phases, with the domination of the FeNi phase, ...
      2025-01-27

    • Thermoluminescent and Dosimetric Properties of Zirconium Dioxide Ceramics Irradiated with High Doses of Pulsed Electron Beam 

      Nikiforov, Sergey; Dauletbekova, Alma; Gerasimov, Maksim; Kasatkina, Yana; Denisova, Olga; Lisitsyn, Viktor; Golkovski, Mikhail; Akylbekova, Aiman; Bazarbek, Assyl-Dastan; Akilbekov, Abdirash; Popov, Anatoli I. (Crystals, 2023)
      2025-01-27

    • Thermodynamic and holographic information dual to volume 

      Momeni, Davood; Faizal, Mir; Alsaleh, Salwa; Alasfar, Lina; Myrzakul, Aizhan; Myrzakulov, Ratbay (Eurasian Physical Technical Journal C, 2018)
      In this paper, we will analyze the connection between the fidelity susceptibility, the holographic complexity and the thermodynamic volume. We will regularize the fidelity susceptibility and the holographic complexity by subtracting the contribution of the background AdS spacetime from the deformation of the AdS spacetime. It will be demonstrated that this regularized fidelity ...
      2025-01-27

    • Thermal and electrical properties of nanocrystalline superionic NaxCu1.75S (x=0.1, 0.15, 0.2, 25) compounds 

      Kubenova, M.M.; Kuterbekov, K.A.; Balapanov, M.Kh.; Ishembetov, R.Kh.; Akhmetgaliev, B.M.; Kabyshev, A.M.; Bekmyrza, K.Zh.; Zeleev, M.Kh.; Palymbetov, R.Sh.; Baikhozhaeva, B.U. (Eurasian Journal of Physics and Functional Materials, 2023)
      2025-01-27

    • The Method and Software for the Solution of Dynamic Waves Propagation Problem in Elastic Medium 

      Akhmetova, Z.; Zhuzbaev, S.; Boranbayev, S. (ACTA PHYSICA POLONICA A, 2016)
      2025-01-27

    • The Influence of Variations in Synthesis Conditions on the Phase Composition, Strength and Shielding Characteristics of CuBi2O4 Films 

      Kadyrzhanov, Dauren B.; Idinov, Medet T.; Shlimas, Dmitriy I.; Kozlovskiy, Artem L. (Crystals, 2024)
      This paper presents the results of the influence of variation of the synthesis conditions of CuBi/CuBi2O4 films with a change in the applied potential difference, as well as a change in electrolyte solutions (in the case of adding cobalt or nickel sulfates to the electrolyte solution) on changes in the phase composition, structural parameters and strength characteristics of ...
      2025-01-27

    • The Evaluation of Creditworthiness of Trade and Enterprises of Service Using the Method Based on Fuzzy Logic 

      Makhazhanova, Ulzhan; Kerimkhulle, Seyit; Mukhanova, Ayagoz; Bayegizova, Aigulim; Aitkozha, Zhankeldi; Mukhiyadin, Ainur; Tassuov, Bolat; Saliyeva, Ainur; Taberkhan, Roman; Azieva, Gulmira (Applied Sciences, 2022)
      This article considered the problem of determining the creditworthiness of an enterprise operating in the field of trade and services. The assessment of the creditworthiness of borrowers, particularly small businesses, needs to be more careful: the level of development of small enterprises and their specific activities must be considered, as well as the uncertainty in obtaining ...
      2025-01-27

    • The Effect of Low-Modulus Plastic Fiber on the Physical and Technical Characteristics of Modified Heavy Concretes Based on Polycarboxylates and Microsilica 

      Akhmetov, Daniyar Akbulatovich; Pukharenko, Yuri Vladimirovich; Vatin, Nikolai Ivanovich; Akhazhanov, Sungat Berkinovich; Akhmetov, Akbulat Raiymbekovich; Jetpisbayeva, Ainur Zhenisbekkyzy; Utepov, Yelbek Bakhitovich (Materials, 2022)
      Manufacturers of building materials strive to optimize the three basic concrete properties— strength, durability, and shrinkage deformation, of which the focus is generally on the durability in the structure when designing and monitoring the poured concrete. Studying concretes’ structural performance and the change in their characteristics over time enables the solution of ...
      2025-01-27

    • The Effect of Fast Kr Ion Irradiation on the Optical Absorption, Luminescence, and Raman Spectra of BaFBr Crystals 

      Akilbekov, Abdirash; Kenbayev, Daurzhan; Dauletbekova, Alma; Polisadova, Elena; Yakovlev, Victor; Karipbayev, Zhakyp; Shalaev, Alexey; Elsts, Edgars; Popov, Anatoli I. (Crystals, 2023)
      2025-01-27

    • The Effect of 147 MeV 84Kr and 24.5 MeV 14N Ions Irradiation on the Optical Absorption, Luminescence, Raman Spectra and Surface of BaFBr Crystals 

      Akilbekov, Abdirash; Kenbayev, Daurzhan; Dauletbekova, Alma; Shalaev, Alexey; Akylbekova, Aiman; Aralbayeva, Gulnara; Baimukhanov, Zein; Baizhumanov, Muratbek; Elsts, Edgars; Popov, Anatoli I. (Crystals, 2024)
      Today, BaFBr crystals activated by europium ions are used as detectors that store absorbed energy in metastable centers. In these materials, the image created by X-ray irradiation remains stable in the dark for long periods at room temperature. As a result, memory image plates are created, and they are extended to other types of ionizing radiation as well. Despite significant ...
      2025-01-27

    • The differential-q-difference 2D Toda equation: bilinear form and soliton solutions 

      Kutum, B.B.; Yesmakhanova, K.R.; Shaikhova, G.N. (Journal of Physics: Conference Series, 2019)
      In this paper, the differential-q-difference 2D Toda lattice is studied. Hirota’s bilinear technique is applied to it. Soliton solutions are constructed through the resulting bilinear form for the differential-q-difference 2D Toda equation.
      2025-01-27

    • The Influence of Variations in Synthesis Conditions on the Phase Composition, Strength and Shielding Characteristics of CuBi2O4 Films 

      Kadyrzhanov, Dauren B.; Idinov, Medet T.; Shlimas, Dmitriy I.; Kozlovskiy, Artem L. (Crystals, 2024)
      This paper presents the results of the influence of variation of the synthesis conditions of CuBi/CuBi2O4 films with a change in the applied potential difference, as well as a change in electrolyte solutions (in the case of adding cobalt or nickel sulfates to the electrolyte solution) on changes in the phase composition, structural parameters and strength characteristics of ...
      2025-01-27

    • The Effect of Low-Modulus Plastic Fiber on the Physical and Technical Characteristics of Modified Heavy Concretes Based on Polycarboxylates and Microsilica 

      Akhmetov, Daniyar Akbulatovich; Pukharenko, Yuri Vladimirovich; Vatin, Nikolai Ivanovich; Akhazhanov, Sungat Berkinovich; Akhmetov, Akbulat Raiymbekovich; Jetpisbayeva, Ainur Zhenisbekkyzy; Utepov, Yelbek Bakhitovich (Materials, 2022)
      Manufacturers of building materials strive to optimize the three basic concrete properties— strength, durability, and shrinkage deformation, of which the focus is generally on the durability in the structure when designing and monitoring the poured concrete. Studying concretes’ structural performance and the change in their characteristics over time enables the solution of ...
      2025-01-27

    • The Current Radiation Situation of the Territory Near the Uranium Mining Enterprises of Northern Kazakhstan 

      Nygymanova, A.S.; Pirmanova, A.G.; Bakhtin, M.M.; Kuterbekov, K.A.; Kazymbet, P.K.; Kabyshev, A.M.; Baikhozhaeva, B.U. (Eurasian Chemico-Technological Journal, 2021)
      Radioactive waste near the industrial zones of the mining administrations of the Stepnogorsk Mining and Chemical Combine, which occupy vast areas of the territory, remains an urgent problem for Northern Kazakhstan. For example, waste rock processing referred to as “tailings”, is contained in huge industrial basinlakes, called tailings. Each liter of jelly-like “pulp”, in ...
      2025-01-27

    • The cluster and single-particle states in 13C (α,α)13C reactions 

      Mynbayev, N A; Nurmukhanbetova, A K; Goldberg, V Z; Rogachev, G V; Golovkov, M S; Koloberdin, M; Ivanov, I; Nauruzbayev, D K; Berdibek, Sh S; Rakhymzhanov, A M; Tribble, R E (Journal of Physics: Conference Series, 2016)
      The excitation functions of elastic scattering of 13C on alpha particle have been measured using the thick-target inverse kinematic method at the heavy ion DC-60 cyclotron. The helium gas was used as a target and also as a degrader to stop the beam. New data (including 180°degree) of the resonances close to the threshold in 17O have been obtained.
      2025-01-27
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