Научные статьи: Недавние поступления
Отображаемые элементы 821-840 из 5785
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The Effect of Mineral Fillers on the Rheological and Performance Properties of Self-Compacting Concretes in the Production of Reinforced Concrete Products
(Journal of Composites Science, 2025)This study investigates the impact of widely used mineral fillers in selfcompacting concrete compositions applied in vibration-free reinforced concrete production technology, as a means of enhancing rheological characteristics and cost-effectiveness. Three distinct types of mineral fillers, including the well-studied fillers microsilica and metakaolin, as well as the lesser-explored ...2026-03-12 -
The effect of mechanical milling and two-step sintering technique on the microstructure, microhardness, strength, and dielectric properties of Sm2Zr2O7 ceramics
(Case Studies in Chemical and Environmental Engineering, 2025)This paper investigates the effect of two-step sintering on the mechanical properties and microstructure of Sm2Zr2O7 ceramics obtained from submicron powders after high-energy milling. Two key parameters of the twostep sintering process are analyzed: temperature and duration, as both can significantly influence grain growth processes in ceramics. It was found that extending ...2026-03-12 -
Temperature-dependent luminescence of europium-doped Ga₂O₃ ceramics
(Optical Materials: X, 2025)This study explores the synthesis and luminescent properties of europium-doped gallium oxide (Ga₂O₃:Eu) ce ramics fabricated via electron beam-assisted synthesis (EBAS) at 1.4 MeV. The resulting Ga₂O₃:Eu ceramics exhibit a nanocrystalline structure with an average crystallite size of ~30 nm, high crystallinity, and minimal lattice strain (<0.5 %). Luminescence analysis from ...2026-03-12 -
System of Interconnected Reactor Models of the Sulfur Recovery Unit with Hydrogen Extraction for Hydrogen Energy in a Fuzzy Environment
(Energies, 2025)The Sulfur Production Unit with Hydrogen Extraction (SPUHE) plays a critical role in oil refineries by converting hydrogen sulfide into high-quality sulfur and hydrogen. However, optimizing SPUHE operations is challenging due to the uncertainty in process parameters and qualitative assessments of sulfur properties. This study proposes a systematic modeling approach that ...2026-03-12 -
Synthesis and investigation of the applicability of Fe3O4/ZnO nanoparticles as a basis for hyperthermic studies
(Case Studies in Chemical and Environmental Engineering, 2025)Ferrimagnetic nanoparticles, which are compounds of iron oxide with other types of metal oxides, are one of the promising types of nanoparticles among a wide variety. Interest in this type of nanostructures is primarily due to the great prospects for their use in biomedical applications, targeted drug delivery, alongside hyperthermia and magnetic resonance therapy. The ...2026-03-12 -
Study of the Possibility of Transition to More Stringent Energy Efficiency Requirements for Translucent Structures in the Republic of Kazakhstan
(Buildings, 2025)The article discusses issues related to improving the energy efficiency of translucent structures (hereinafter referred to as windows) in the construction of buildings in the Republic of Kazakhstan. An analysis of the current regulatory requirements for the thermal insulation of windows and other translucent structures, depending on the climatic conditions of the construction ...2026-03-12 -
STUDY OF THE IMPACT OF BIOPOLYMER AND GEOSYNTHETICS REINFORCEMENT ON SOIL STRENGTHENING
(EUREKA: Physics and Engineering, 2024)Under contemporary conditions, various soil reinforcement methods are employed, each possessing distinct characteristics and applications. These methods aim to improve the strength characteristics and stability of soil foundations. This study evaluates the effectiveness of combined soil reinforcement using a biopolymer (xanthan gum) and a geosynthetic (non-woven geotextile). ...2026-03-12 -
Study of the Effect of Nanostructured Grains on the Radiation Resistance of Zirconium Dioxide Ceramics During Gas Swelling in the Case of High-Dose Irradiation with He2+ Ions
(ES Materials and Manufacturing, 2024)The paper is devoted to the study of the influence of variation of ZrO2 ceramics grain sizes on the resistance to radiationinduced swelling under irradiation with low-energy Не2+ ions. The choice of ZrO2 ceramics as objects of research is due to high levels of mechanical strength and hardness, as well as low rates of thermal expansion, which eliminates the effects of thermal ...2026-03-12 -
STUDY OF THE INFLUENCE OF THE ACCUMULATED DOSE OF DAMAGE IN THE NEAR-SURFACE LAYER ON RESISTANCE TO EXTERNAL INFLUENCES ASSOCIATED WITH CORROSION PROCESSES DURING HIGH-TEMPERATURE ANNEALING
(Eurasian Physical Technical Journal, 2024)Investigating the challenges associated with the structural and strength degradation of ceramic fuel cells, which hold significant potential for hydrogen production through electrolysis methods, is a current focus of research. Understanding the degradation processes and their occurrence rate is crucial in the assessment of the efficacy of these ceramics for applications in ...2026-03-12 -
STUDY OF THE EFFECT OF THE FORMATION OF TWO-PHASE CERAMICS BASED ON NEODYMIUM ZIRCONATE DUE TO DOPING WITH MGO AND Y2O5 ON THE STABILITY OF STRENGTH AND THERMOPHYSICAL PARAMETERS UNDER IRRADIATION
(Eurasian Physical Technical Journal, 2024)The work presents the study results of the determination of the resistance of neodymium zirconate doped with MgO and Y2O5 to radiation damage stemming from irradiation with heavy ions akin to nuclear fuel fission fragments. The attraction towards this type of ceramics stems from its potential to raise the operational temperatures within the core of next-generation nuclear ...2026-03-12 -
Study of the effect of phase formation processes on the change in optical and thermal properties of Nd2Zr2O7 ceramics with a pyrochlore structure
(Optical Materials: X, 2025)The paper presents the results of studies of the influence of phase formation processes with variations in annealing temperature on the processes of stabilization of the crystal structure, optical and thermal properties of Nd2Zr2O7 ceramics, which have great potential for use in optoelectronic applications due to the transitions of Nd3 ions, as well as high stability to ...2026-03-12 -
STUDY OF THE EFFECT OF HEAT TRANSFER DURING MOLDING OF TERMOPLASTIC BERYLLIUM OXIDE CERAMICS
(Eurasian Physical Technical Journal, 2025)Beryllium oxide (BeO) ceramics formed with the use of ultrasound exhibit more intense sintering, lower shrinkage, and a reduced sintering temperature compared to ceramics produced without ultrasound. The effectiveness of ultrafast sintering is dependent on the cohesion of ceramic agglomeration and the proper arrangement of particles. Rheological properties thermoplastic ...2026-03-12 -
Study of the application prospects of film detectors for estimation of α-radiation density
(Optical Materials: X, 2025)The aim of this research is to study the prospects of using the proposed methods of optical UV spectroscopy and X-ray diffractometry to determine the radiation density of the daughter products of radon decay - α-particles recorded using polymer track detectors. This paper presents the results of experiments on detecting the daughter products of radon decay - α-particles in ...2026-03-12 -
Study of the applicability of ACdSe (A – Co, Ni) thin films as catalysts for heavy metal capture
(Optical Materials: X, 2024)Expansion of the possibilities of using photoactive thin films with a unique combination of optical and morphological characteristics as a basis for creation of highly efficient catalysts for the aqueous media purifi cation is one of the promising research areas in modern materials science, which has both fundamental signif icance and potential for practical application. This ...2026-03-12 -
Methods of Multi-Criteria Optimization of Technological Processes in a Fuzzy Environment Based on the Simplex Method and the Theory of Fuzzy Sets
(Mathematics, 2024)Many modern technological objects in practice are characterized by the uncertainty of the initial information necessary for their management. Recently, one of the pressing scientific and practical problems is the development of new optimization methods for controlling the operating modes of such objects in a fuzzy environment. In this regard, the objective of this study is to ...2026-03-11 -
Methods for Assessing the Layered Structure of the Geological Environment in the Drilling Process by Analyzing Recorded Phase Geoelectric Signals
(Mathematics, 2024)Assessment of the current state of the near-surface part of the geological environment and understanding of its layered structure play an important role in various scientific and applied fields. The presented work is devoted to the application of phasometric modifications of geoelectric control methods to solve the problem of the detailed complex study of the underground layers ...2026-03-11 -
Methodology for International Transport Corridor Macro-Modeling Using Petri Nets at the Early Stages of Corridor Development with Limited Input Data
(Modelling, 2024)International transport corridors (ITCs) are intricate logistical networks essential for global trade flows. The effective modeling of these corridors provides invaluable insights into optimizing the transport system. However, existing approaches have significant limitations in dynamically representing the complexities and uncertainties inherent in ITC operations and at the ...2026-03-11 -
Method of undetermined coefficients for circuits and filters using Legendre functions
(International Journal of Electrical and Computer Engineering (IJECE), 2025)This article presents a new way to implement matching networks and filters using the method of undetermined coefficients. A method is proposed for approximating the transmission coefficient of the synthesized filter, taking into account the required amplitude-frequency characteristics. To synthesize the filter, an approximating function (AF) was used using orthogonal ...2026-03-11 -
Метод формирования мультимедийных файлов для задач лицевой биометрии и ее приложений
(НАУЧНО-ТЕХНИЧЕСКИЙ ВЕСТНИК ИНФОРМАЦИОННЫХ ТЕХНОЛОГИЙ, МЕХАНИКИ И ОПТИКИ, 2024)Введение. Рассмотрены способы построения компактных мультимедийных файлов на основе цветного изображения лица, биометрических данных и документальной информации о человеке, которому принадлежит это лицо. Метод. Сущность предлагаемого метода состоит в генерации цветного QR-кода на основе лицевых характеристик и встраивании цветного QR-кода в изображение лица. Формирование ...2026-03-11 -
MECHANISM OF FORMATION OF INTERNAL AND SURFACE DEFECTS IN CASTING AND THEIR TRANSFORMATION INTO SURFACE DEFECTS OF SHEET
(Eurasian Physical Technical Journal, 2024)This study aimed to elucidate the formation mechanisms of micro-macrostructural heterogeneities in the ingot's cortical zone and their transformation into surface defects during heating, plastic deformation, and rolling processes. The methodology and results of studying the macro- and microstructural and chemical heterogeneities of ingots and finished rolled sheets are ...2026-03-11
