The internal structural features of large metal objects found in the cultural and memorial complex of Eleke Sazy in the Republic of Kazakhstan were studied using neutron radiography and tomography. Bronze plate, arrowhead, and fragment of metal bit were studied. The 3D models of the studied objects were reconstructed, the spatial distribution of metals and corrosion products ...

This study investigates the modification of bituminous mixtures by varying percentages of PET particles (1%, 3%, 5%, 8%, 10%, and 12% PET). The following methods were employed to analyze the samples: the ring-and-ball softening point determination method (ASTM D36/D36M-14), the Fraass breaking point determination method (EN 12593: 2015), the elongation determination method ...

This article examines the modeling of sustainable development in transport logistics, focusing on the impact of climate factors, changing weather conditions, and digitalization processes. The study analyzes the complex influence of adverse weather phenomena, such as fog, rain, snow, extreme temperatures, and strong winds, whose frequency and intensity are increasing due to ...

Noise pollution from construction activities affects both workers and nearby residents. This study proposes a new method for localizing noise sources on construction sites. The method uses a radial microphone array and an algorithm based on the highest signal direction intersections. Simulations show this approach can identify noise source locations with relatively decent ...

The electrical and thermal properties of composite cathode materials Pr1−xSrxFe1−yCoyO3 (x= 0.3,0.4; y = 0.2):GDC and La2Ni1-xCoxO4+δ (x= 0.2):GDC for solid oxide fuel cells (SOFC) were investigated. As the second component of the composites, GDC electrolyte was chosen. The reason for this choice is that GDC has greater chemical inertness in relation to cathode materials compared ...

This study examines the surface-dependent formation of interpolymer complexes (IPCs) by the layer-by-layer (LBL) deposition method. The materials used in this analysis are poly(acrylic acid) (PAA) combined with cellulose ethers, namely methyl cellulose (MC), hydroxypropyl cellulose (HPC), and hydroxyethyl cellulose (HEC), and poloxamers PX188 and PX407. PMMA, PS, and glass ...

This paper aims to investigate innovative approaches to sustainable urban planning, focusing on contemporary trends and technologies. The study includes a comprehensive review of relevant international research, along with examples of practical implementations of the findings. Traditional sustainable urban planning methods, such as zoning and compact development, are now ...

This article studies the influence of solid-phase (type 1 samples) and melt-quenching (type 2 samples) technological modes of obtaining Na3Fe2 (PO4 )3 polycrystals on their structures and ion-conducting properties. α-Na3Fe2 (PO4 )3 polycrystals of the 1st type are formed predominantly under an isothermal firing regime, and the synthesis of the 2nd type is carried out under ...

This paper discusses the possibility of improving the ekibastuz coal quality through the use of "dry enrichment" technology. The experiments and calculations carried out made it possible to determine the optimal scheme for enrichment of samples of thermal coals from the Ekibastuzsky open-pit mine of "Angrensor-Energo" LLP. Testing of technical characteristics, such as ...

Centrifugal pumps are extensively utilized across various industries, including water supply, agriculture, and energy, where they consume significant amounts of electricity. As demands for energy efficiency and reduced operating costs increase, enhancing pump efficiency has become crucial. This study focuses on optimizing the pump impeller geometry, which plays a vital role in ...