Журнал СФУ. Математика и физика. Journal of SibFU. Mathematics & Physics: Новые ресурсы

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    • Application of Optical Methods in Standardization of Collagen-containing Hydrogen for 3D Bioprinting of Supporting and Connective Tissues 

      Timchenko, Elena V.; Ryabov, Nikolai A.; Frolov, Oleg O.; Timchenko, Pavel E.; Volova, Larisa T.; Ivanov, Sergej S.; Тимченко, Елена В.; Рябов, Николай А.; Фролов, Олег О.; Тимченко, Павел Е.; Волова, Лариса Т.; Иванов, Сергей С. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The paper presents the results of the application of optical methods in the standardization of collagen-containing allogeneic hydrogel produced at the Biotech Research Institute (Samara, Russia) from bioimplants of the ...

    • Investigation of the Orientational Thermoelasticity Effect Using a Simplified Model of Nematic Liquid Crystal in the Acoustic Approximation 

      Smolekho, Irina V.; Смолехо, Ирина В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      Analysis of the orientational thermoelasticity effect using a two-dimensional simplified dy- namic model of liquid crystal in the acoustic approximation is presented in the paper. It is assumed that effect occurs when ...

    • The Investigation of Gaussian Beams and Optical Vortices Diffraction in the Near Zone of Subwavelength Optical Elements with Variable Height 

      Savelyev, Dmitry A.; Савельев, Дмитрий А. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The finite difference time domain method was used to simulate the propagation of Gaussian beams and optical vortices with circular, radial, azimuthal polarization on subwavelength ring gratings with standard and GRIN ...

    • m cv measure ω* (x, E, D) and condenser capacity C(E, D) in the class m-convex functions 

      Sadullaev, Azimbay; Sharipov, Rasulbek; Ismoilov, Mukhiddin; Садуллаев, Азимбай; Шарипов, Расулбек; Исмоилов, Мухиддин (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      In this work we study very basic concepts of potential theory: polar sets and m−cv measures in the class of m-convex functions in real space Rn. We also study capacity of condenser C(E, D) in the class m-convex functions ...

    • Filamentation Process of Femtosecond Laser Pulse in Air and Associated Phenomena 

      Prokopev, Vladimir E.; Lubenko, Dmitrii M.; Прокопьев, Владимир Е.; Лубенко, Дмитрий М. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The paper presents experimental studies of physical processes and conditions for generate high-directional white-light supercontinuum in visible range. It was shown that it occurs in filamentation area and postfilamentation ...

    • Modelling of a Sandwich Plate Cross-section with Different Moduli of the Material under Cylindrical Loads 

      Petrakov, Igor E.; Петраков, Игорь Е. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      A model of three-layer sandwich plate consisting of two layers of composite material connected by an elastic isotropic layer is considered in the paper. Composite layers with different tensile and compression moduli of ...

    • Measures on Smashed Products of Quasigroups and their Algebras 

      Ludkowski, Sergey V.; Людковский, Сергей В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      We study quasiinvariant measures on smashed and twisted wreath products of quasigroups. The quasiinvariance of measures is investigated relative to isotopies. Specific features are found for quasigroups in comparison ...

    • Simulation of Single-Pixel Camera Method Application for mapping the Spatial Layout of Objects in LIDAR Technologies 

      Lappo-Danilevskaia, Anastasiia K.; Ismagilov, Azat O.; Kalinichev, Aleksei A.; Tcypkin, Anton N.; Лаппо-Данилевская, Анастасия К.; Исмагилов, Азат О.; Калиничев, Алексей А.; Цыпкин, Антон Н. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      This work presents the simulation results demonstrating the successful application of single- pixel imaging for the reconstruction of three-dimensional object images, in combination with LIDAR technologies. Specifically, ...

    • On One Integral Representation of the Potential Type 

      Kytmanov, Alexander M.; Myslivets, Simona G.; Кытманов, Александр М.; Мысливец, Симона Г. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      In this article, we consider some integral representation of the potential type (Cauchy– Fantappi`e) for a smooth function defined on the boundary of a bounded multidimensional domain. Derivatives of this integral ...

    • Near-field Interaction Effects in Colloidal Au-CeYTbF3 Nanoclusters in Plasmonic Immunoanalysis 

      Izbasarova, Elina A.; Gazizov, Almaz R.; Избасарова, Элина А.; Газизов, Алмаз Р. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      In this paper, we study the effects of plasmonic enhancement of spontaneous emission in colloidal nanoclusters consisting of Au nanoparticles and CeYTbF3 phosphor. Based on numerical sim- ulation of various configurations ...

    • Solid-phase Synthesis and Photocatalytic Properties of Bi2SiO5/Bi12SiO20 Heterostructures 

      Golubovskaya, Aleksandra G.; Kharlamova, Tamara S.; Svetlichnyi, Valery A.; Голубовская, Александра Г.; Харламова, Тамара С.; Светличный, Валерий А. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      In this work, a new approach to the preparation of heterostructured nanoparticles (NPs) based on bismuth silicates Bi2SiO5/Bi12SiO20 is proposed and implemented. This approach is based on solid-phase synthesis by annealing ...

    • Some Remarks and Corrections of Recent Results from the Framework of S-metric Spaces 

      Fetouci, Nora; Radenovi´, Stojan; Фетуси, Нора; Раденович, Стоян (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The content of this paper consists of results on Wardowski’s F -contraction within S-metric spaces. Namely, in it we present corrections to some recent results by using only the property F1 of strict increasing of the ...

    • Sommerfeld’s Method for Solving the Dynamic Rigid Stamp Indentation Problem 

      Fatyanov, Alexey G.; Фатьянов, Алексей Г. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The work is based on Sommerfeld’s ideas in solving the diffraction problem on a mirror segment. On this basis, a new method for solving the dynamic problem for a vibrating rigid stamp is developed. The solution is sought ...

    • Spectrum Broadening of Femtosecond Radiation Pulse at 950 nm Wavelength in Material with Cubic Nonlinearity 

      Alekseev, Sergey V.; Losev, Valery F.; Grudtsyn, Yakov V.; Koribut, Andrey V.; Yalovoy, Valery I.; Алексеев, Сергей В.; Лосев, Валерий Ф.; Грудцын, Яков В.; Корибут, Андрей В.; Яловой, Валерий И. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-06)
      The conditions for spectrum broadening of 60 fs radiation pulse at a central wavelength 950 nm in fused quartz plates due to phase self-modulation are studied experimentally and theoretically. The studies are conducted ...

    • Stability of a Steady State of Closed Microecosystem «algae – heterotrophic bacteria» 

      Zolotov, Oleg A.; Chusovitina, Alexandra I.; Zalizniak, Viktor E.; Золотов, Олег А.; Чусовитина, Александра И.; Зализняк, Виктор Е. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-04)
      Two models of closed microecosystem "algae–heterotrophic bacteria" are considered in this paper. Mathematical models are the Cauchy problem for system of non-linear ordinary differential equations. To develop models the ...

    • Filtration of Two Immiscible Liquids in a Viscoelastic Porous Medium 

      Tokareva, Margarita A.; Papin, Alexander A.; Токарева, Маргарита А.; Папин, Александр А. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-04)
      Governing equations for the motion of two immiscible fluids in a poroelastic skeleton are obtained within the framework of the theory of interacting continua. The stability of the steady-state solution of the system is ...

    • Raman Spectroscopy Method for Identification of Streptococci 

      Timchenko, Elena V.; Timchenko, Pavel E.; Lyamin, Artem V.; Kayumov, Karim A.; Bazhutova, Irina V.; Volova, Larisa T.; Frolov, Oleg O.; Zotova, Alena V.; Bazhutov, Filipp R.; Тимченко, Елена В.; Тимченко, Павел Е.; Лямин, Артём В.; Каюмов, Карим А.; Бажутова, Ирина В.; Волова, Лариса Т.; Фролов, Олег О.; Зотова, Алёна В.; Бажутов, Филипп Р. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-04)
      In the modern world, various infammatory diseases of the oral cavity have become widespread, in particular periodontitis. Streptococcs are one of the potential participants in the in- fammatory process. In this work, ...

    • Novel Results on Positive Solutions for Nonlinear Caputo-Hadamard Fractional Volterra-Fredholm Integro Differential Equations 

      Abdulrahman A. Sharif; Maha M. Hamood; Kirtiwant P. Ghadle; Абдулрахман А. Шариф; Маха М. Хамуд; Киртивант П. Гэдл (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
      In this paper, we establish the existence and uniqueness of positive solutions for fractional Volterra-Fredholm integro-differential equation. This equation incorporates Caputo–Hadamard frac- tional derivatives and is ...

    • FRW Viscous Cosmological Model with Time Periodically Varying Deceleration Parameter In f (R, T)Gravity 

      M. Ramanamurty; Rajamahanthi Santhikumar; K. Sobhanbabu; М. Раманамурти; Раджамаханти Сантикумар; К. Собханбабу (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-04)
      This research paper investigates the dynamics of a Friedmann–Robertson–Walker cosmolog- ical model characterized by perfect fluid pressure and barotropic bulk viscous pressure. By obtaining exact solutions to Einstein’s ...

    • Computer Simulation of Self-assembly of Structure from an Ensemble of Nanoparticles 

      Petrakova, Viktoriya S.; Tsipotan, Alexey S.; Петракова, Виктория С.; Ципотан, Алексей С. (Journal of Siberian Federal University. Сибирский федеральный университет, 2025-04)
      Self-assembly is one of the methods utilized to create intricate geometry-based structures at the nanoscale. Earlier research in this field has shown that the formation of multiparticle structures using this technique ...