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Научные статьи: Недавние поступления

  • Stability of compact stars in a uniform density background cloud 
    Singh, Ksh. Newton; Maurya, S. K.; Errehymy, A.; Donmez, O.; Myrzakulov, K.; Smitha, T. T. (European Physical Journal C, 2024)
    We are discussing a scenario where a compact star (neutron star, NS) is embedded in a thin, uniform density background cloud (a remnant cloud after a supernova or a cloud generated from the late stages of a star e.g., a ...
  • Specifics of Data Collection and Data Processing during Formation of RailVista Dataset for Machine Learning- and Deep Learning-Based Applications 
    Abisheva, Gulsipa; Goranin, Nikolaj; Razakhova, Bibigul; Aidynov, Tolegen; Satybaldina, Dina (Sensors, 2024)
    This paper presents the methodology and outcomes of creating the Rail Vista dataset, designed for detecting defects on railway tracks using machine and deep learning techniques. The dataset comprises 200,000 high-resolution ...
  • Solitary wave solutions for the nonlinear Schrodinger equation with power law nonlinearity 
    Kudaibergenov, Gaziz; Syzdykova, Arailym (Journal of Physics: Conference Series, 2025)
    In this paper, the nonlinear Schr¨odinger equation with power law nonlinearity is considered. This equation admits Lax pair and is integrable. The Jacobi elliptic function approach is used to obtain solitary waves ...
  • Social networks in the context of postmodern theories – A case of Kazakhstan 
    Sabyrov, Nurlan; Otar, Elmira (Scientific Herald of Uzhhorod University Series “Physics”, 2024)
    Relevance. Social networks are developed and spread to an increasing number of people every day. This is due to the dynamic process of digitalization, which provokes changes in all vectors and categories of society. Purpose. ...
  • Simulation of resonant reactions in TTIK approach by C++ code 
    Akhat, R.; Nauruzbayev, D.; Nurmukhanbetova, A. (International Journal of Mathematics and Physics, 2024)
    We studied the interaction of ¹⁵N with hydrogen at low energies using the Thick Target Inverse Kinematics (TTIK) method combined with the Time of Flight (ToF) technique. This combination enables a clear identification of ...
  • SIMULATION OF CONDITIONS FOR ACHIEVING HIGH ELECTRICAL POWER AND EFFICIENCY IN A STIRLING ENGINE WITH A FREE WORKING PISTON 
    Sabdenov, K. О.; Erzada, M.; Zholdybaeva, G.T. (Eurasian Physical Technical Journal, 2024)
    A simulation of the Stirling engine was carried out, where the temperature variability in the cooler and heater is taken into account, and the engine itself generates electric current. The study was carried out in the ...
  • Signature flips in time-varying Λ(t) cosmological models with observational data 
    Myrzakulov, Yerlan; Koussour, M.; Karimov, M.; Rayimbaev, J. (European Physical Journal C, 2024)
    In this study, we investigate signature flips within the framework of cosmological models featuring a time-varying vacuum energy term Λ(t). Specifically, we consider the power-law form of Λ=αHn, where α and n are constants. ...
  • Search for Leptonic Decays of Dark Photons at NA62 
    Cortina Gil, E.; NA62 Collaboration (Physical Review Letters, 2024)
    The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×1017 protons on dump collected in 2021. No evidence for a dark photon ...
  • Scalar induced gravity waves from ultra slow-roll galileon inflation 
    Choudhury, Sayantan; Karde, Ahaskar; Panda, Sudhakar; Sami, M. (Nuclear Physics, Section B, 2024)
    We consider the production of secondary gravity waves in Galileon inflation with an ultra-slow roll (USR) phase and show that the spectrum of scalar-induced gravitational waves (SIGWs) in this case is consistent with the ...
  • Revisiting Einstein-Gauss-Bonnet theories after GW170817 
    Oikonomou, V.K. (Physics Letters B, 2024)
    In this work we study the inflationary framework of Einstein-Gauss-Bonnet theories which produce a primordial gravitational wave speed that respects the constraint imposed by the GW170817 event, namely |cT 2−1|<6×10−15 in ...
  • Research of Physical and Mechanical Properties of Self-Compacting Concrete Based on Polyfractional Binder 
    Begentayev, Meiram M.; Akhmetov, Daniyar A.; Lukpanov, Rauan E.; Kuldeyev, Erzhan I.; Zhumadilova, Zhanar O.; Myrzaliyev, Tolebi; Dyussembinov, Duman S.; Tolegenova, Aigerim K. (Applied Sciences, 2025)
    This article presents the results of a study on the influence of a three-level dispersed composition of the clinker component of a binder, which includes coarse, medium, and fine fractions, on the physical and mechanical ...
  • Red or Blue Tensor Spectrum from GW170817-compatible Einstein-Gauss-Bonnet Theory: A Detailed Analysis 
    Oikonomou, V.K.; Tsyba, Pyotr; Razina, Olga (Institute of Physics, 2024)
    In this work we shall prove that the tensor spectral index of the primordial tensor perturbations for GW170817-compatible Einstein-Gauss-Bonnet theories, takes the approximate simplified form nT≃2(-1+ 1/λ(φ))ϵ1 at leading ...
  • RECONSTRUCTION OF THE QUINTESSENCE DARK ENERGY POTENTIAL FROM A GAUSSIAN PROCESS 
    Elizalde, E.; Khurshudyan, M.; Myrzakulov, K.; Bekov, S. (Astrophysics, 2024)
    This paper presents the reconstruction of the quintessence dark energy potential in a model- independent way. Reconstruction relies on a Gaussian process and on available expansion rate data. Specifically, 40-point values ...
  • Recombination Luminescence and Electron–Hole Trapping Centers in BaSO4-Bi Phosphor 
    Pazylbek, Sapargali; Nurakhmetov, Turlybek N.; Nurpeissov, Aibek S.; Alibay, Temirulan T.; Sadykova, Batsay M.; Shamiyeva, Raushan K.; Zarkov, Aleksej; Kareiva, Aivaras (Crystals, 2025)
    This study of the BaSO4-Bi phosphor has revealed that the accumulated energy after external optical excitation exhibits specific characteristics. During irradiation with photon energy exceeding the bandgap, in addition ...
  • Reception of contemporary Kazakh prose in the global cultural space 
    Jakipova, Gulsana; Beisenova, Zhainagul; Toleubayeva, Aknur (Scientific Herald of Uzhhorod University Series “Physics”, 2024)
    Relevance. With the ever-changing cultural component of society, which includes a multifaceted field of literary creation, this topic is relevant to modern linguists and literary scholars because of its versatility and ...
  • Reactions induced by 30 MeV 3He beam on 9Be: Cluster transfer reactions 
    Urazbekov, B A; Issatayev, T; Lukyanov, S M; Azhibekov, A; Denikin, A S; Mendibayev, K; Janseitov, D M; Penionzhkevich, Yu E; Kuterbekov, K A; Zholdybayev, T K (Chinese Physics C, 2024)
    An experiment was conducted for studying the cluster structure of Be induced by He ions at an energy of 30 MeV. As results of the nuclear reaction 3He + 9Be, the differential cross sections for the exit channels - elastic, ...
  • RADIO-ABSORBING MATERIALS BASED ON GRAPHITE PARTICLES IN EPOXY RESIN 
    Makhanov, K.M.; Smagulov, Zh.K.; Burambaeva, N.A.; Assilbekova, A.M.; Soldatkhan, D.; Kuttybek, A.A.; Suleimenova, A.K.; Kenes, T.K.; Kenesbekov, S.E.; Serikova, A.A.; Kenesbek, B.Sh. (Eurasian Physical Technical Journal, 2024)
    This paper presents the results of a study on radio-absorbing materials in the ultra-high frequency range of 78-118 GHz. Crystalline graphite powder (particle size 0.1 mm) was considered as the main radioabsorbing material. ...
  • RADIATION SYNTHESIS OF BARIUM MAGNESIUM FLUORIDE ACTIVATED BY TUNGSTEN CERAMICS: STRUCTURE AND LUMINESCENCE 
    Lisitsyn, V.M.; Vaganov, V.A.; Alpyssova, G.K.; Kaneva, E.V.; Lisitsyna, L.A.; Strelkova, A.V.; Denisov, I.P. (EURASIAN PHYSICAL TECHNICAL JOURNAL, 2024)
    In the work on the example of barium magnesium fluoride activated by tungsten system the existence of possibility of introduction of activators, modifiers into the formed ceramics are shown. Using unique properties of ...
  • Radiation Resistance of High-Entropy Alloys CoCrFeNi and CoCrFeMnNi, Sequentially Irradiated with Kr and He Ions 
    Amanzhulov, Bauyrzhan; Ivanov, Igor; Uglov, Vladimir; Zlotski, Sergey; Ryskulov, Azamat; Kurakhmedov, Alisher; Sapar, Asset; Ungarbayev, Yerulan; Koloberdin, Mikhail; Zdorovets, Maxim (Materials, 2024)
    This work studied the effect of sequential irradiation by krypton and helium ions at room temperature on the composition and structure of CoCrFeNi and CoCrFeMnNi high-entropy alloys (HEAs). Irradiation of the HEAs by 280 ...

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