Geothermal energy resources, as well as other types of renewable sources of energy, have the ability to satisfy almost any consumer in terms of potential and quality of energy. The utilization of geothermal sources is always based on a geological study. In order to determine whether a particular location has the potential to supply geothermal heat for industrial and domestic needs, a preliminary search is required. This feature is one of the main differences between geothermal energy and other renewable energy sources. Prospecting and exploration for geothermal groundwater was carried out in the Zharkent basin area in order to assess the exploitable reserves of thermal groundwater. On the territory of Zharkent geothermal field there are several wells, which are of interest for use as a source of energy. Two promising geothermal wells were identified ― No. 1RT and 3T, for which research was conducted. © 2023, National Academy of Sciences of the Republic of Kazakhstan. All rights reserved.

Mathematical simulation of temperature distribution on double-sided solar cells has been carried out. Differences in the configuration of photoelectric converters prove to solely amount to the fact that a double-sided solar cell has a more efficient heat sink at the rear side. Furthermore double-sided solar cells exhibit higher power conversion performance. Calculations confirm the correctness of giving preference to double-sided solar cells which is of great importance for the photoelectric converter design developed by us. Analysis of market-available photovoltaic technologies of solar energy to electric power conversion has led to the development of a photovoltaic converter on the basis of double-sided silicon heterojunction solar cells. The configuration developed is a moving platform having a photovoltaic cell array mounted on it and a light flux collector. A double-axis tracking system has been developed for the general case of planar attachment of solar cell modules. A 350 mm stroke drive provides for movement in the north-south direction and a 450 mm stroke drive, in the east-west direction. The task has been outlined to find the required arm for providing symmetrical positioning at the maximum rotation angle about the axis. As a result, technical solutions have been developed for the north-south and the east-west directions. Furthermore a schematic wiring diagram has been designed to implement the preset solar tracking system algorithm. The system is also fitted with a GPS/GLONASS module for system precision positioning and time synchronization. © 2022 National University of Science and Technology MISiS.

Contemporary teaching, learning and assessment processes involve more information and communication technologies. The main goal of using information technologies in the educational process is to improve the quality of education by individualization and strengthening intellectual capabilities of students in the information society. This research considered the information communication technology use in higher education institutions of Kazakhstan, exploring its benefits for students and suggesting possible solutions for the problems arising with ICT implementation. For the purpose of this paper a small fragment of students' survey out of the ongoing research project was used. 558 students from various Kazakh universities were surveyed. One of the questions concerned IT development and digitalization level of the universities, because it enhances students' inclination for innovation and entrepreneurship. According to survey results forty three percent of students think that their universities have been sufficiently digitalized. Other forty percent remained neutral, and seventeen percent complained about the ICT equipment, which means that universities should address this issue to remain competitive. The research contributes to previous studies by focusing on students' attitudes toward ICT implementation. It describes both advantages and disadvantages of the ICT in education, and tries to summarize the current conditions of Kazakhstani higher education. For the successful policy implementation, the suggestions should come from the bottom. Therefore, the students' hands-on knowledge and experience with ICT implementation should be taken into consideration and could be helpful for further integration into educational process. © 2022 IEEE.

The intensification of construction, typical for most Kazakhstani cities today, entails the densification of buildings in the central part, including areas with historical architecture. This allows us to talk about the need to form a new view of architectural objects to preserve the unified architectural appearance of cities based on architectural design codes. In this case, the creation of a non-standard solution is based on the use of a variety of compositional principles and techniques, including the use of a rich color palette. In almost all cases, the use of color needs to be substantiated, which leads to disparate color ratios in the organization of cities' environments, and Almaty is no exception. This research aims to develop a method for coloristic organization of the residential area of the city of Almaty using architectural design code. The article discusses the analysis of color characteristics of various historical periods of development of the city of Almaty, identifying key elements of architectural design code and their applicability to the modern practice of urban environment design. The research methodology is based on the literature analysis and research on the topic of colorism and its application in architectural design code. Observations and data collection were also carried out on the existing structure of the city of Almaty and its problems regarding the coloristic organization of space. The result of the study is the development of recommendations for creating a harmonious color picture of the city of Almaty based on the identified methods and principles. The work includes the following key aspects: a review of architectural codes and regulations, an assessment of visual perception of different color schemes, and their impact on social interaction and the psycho-emotional state of residents. Through techniques such as questionnaires and visual surveys, data on residents' preferences for color schemes were collected, allowing the development of recommendations for creating a color plan that takes into account the characteristic features and cultural aspects of the region. The study's results can be used to further develop urban planning and architectural design codes in Almaty and other regions of Kazakhstan.

Transition metal selenides are considered reliable anode materials for sodium-ion batteries (SIBs) on account of their commendable sodium storage capability. Yet they still face problems such as substantial volume amplification and unsatisfied conductivity which are detrimental to the circulation performance of the battery. In view of this, nitrogen-doped carbon (NC) packaged ZnSe/CoSe heterostructures (ZnSe/CoSe@NC) octahedron are rationally designed in this work. The NC capsulated heterostructures octahedron could substantially mitigate the issues of volume expansion and low conductivity for transition metal selenides. Additionally, the rich phase boundary derived from ZnSe/CoSe heterostructured interfaces yields numerous active sites for sodium ions and the formed electric field inside ZnSe/CoSe heterostructure can largely boost charge transfer. Most importantly, the unique heterostructure endows ZnSe/CoSe@NC with relatively stronger sodium adsorption, leading to long cycling stability with a reversible capacity of 289 mAh g−1 underneath 900 cycles at 1 A g−1. Given the pseudocapacitance effect of ZnSe/CoSe@NC in SIBs, a sodium ion capacitor (SIC) on the basis of ZnSe/CoSe@NC capacitor-type anode and Na2FePO4F (NFPF) battery-type cathode is rationally conceived and features high energy densities of 209.4 and 80.4 Wh kg−1 at 240 and 4000 W kg−1. The findings offer a promising pathway toward developing advanced energy storage devices with enhanced cycling stability and high energy density. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.

The purpose of the study is to conduct toxicological analysis to assess the degree of accumulation of heavy metals and micro- and macroplastic particles in the aquatic environment of the lake in the system “water-bottom sediments”. The method of spectrometric atomic absorption analysis was used during the study. Detection of high concentrations of copper (Cu) and zinc (Zn) in the surface layer up to 1.5 and 1.3 times, in the bottom layer up to 1.3 and 1.4 times, respectively, indicated exceeding the norms of maximum permissible concentrations for fishery purposes. High values of metals in the surface water layer were registered in deep-water areas of the lake Markakol, and in the bottom layer, high values are concentrated in shallow areas and in the river confluence zones. High Cu concentrations were recorded in shallow areas of the lake, at depths from 2.7 m – 10.2 mg/kg to 4.7 m – 8.9 mg/kg, 7.9 m – 12.3 mg/kg. Cu values in deep water bottom sediments were much lower, at 20.4 m – 2.8 mg/kg, 21.1 m – 2.6 mg/kg, 21.6 m – 6.6 mg/kg. A similar distribution pattern in bottom sediments was observed for Zn. High concentrations of Zn were recorded in shallow areas, from 154 mg/kg at 2.7 m depth, to 439 mg/kg – 4.6 m, this may be due to an increase in the proportion of their bioavailable forms in the water column, which would be harmful to all hydrobionts. The results of the study can be used in practice by ecologists in order to develop and implement measures to improve the ecological state of the ecosystem of Lake Markakol. © 2024 Joint Journal of Novel Carbon Resource Sciences and Green Asia Strategy. All rights reserved.

The aimed of the study is to see the Writing is one of the essential skills that need honing through continuous practice. This skill is significant in the workplace, especially since this is the minimum skill needed in the day-to-day business, office, academe, and corporate transactions which is why students in EFL classes should be trained so that English writing proficiency is honed regardless of the socio-cultural background. The study is participated by 30 students through a cluster class from the Universitas Islam Negeri Intan Lampung. The study used a Likert-Scale questionnaire and the data were analyzed using the SPSS version 26 while the reliability and validity were evaluated through Cronbach's Alpha coefficient. The data about students' perception of the lecturer's electronic feedback states that the majority of the students (24% of High students, 30% of Fair students, and 27% Low of students) and the students who received feedback on the perception in peer electronic feedback showed that majority of participants (20% of High students, 27% of Fair students, and 26% of Low students) felt that they received electronic feedback on grammar, organization, and vocabulary. While, the opinions of the participants reveal that the majority of them (17% of High students, 27% of Fair students, and 20% of Low students) felt that they did not receive self-feedback on grammar organization, and vocabulary. 75% of the participants embraces the role of the lecturer in providing electronic feedback and emphasizes the responsibility of the learners in correcting the errors committed by the learners, while 69% of the participants believed that it was important to receive peer electronic feedback, arguing that it was also the peer responsibility to give feedback for the leaners' errors. Lastly, 75% believed that self-feedback was not too important to improve their language development, arguing that they did not get benefits from self-feedback because they were not sure about the errors they revised. In summary, the study suggests that e-feedback is a valuable tool for improving academic writing in EFL students. It necessitates broader adoption and customization in educational practices while also indicating areas for further enhancement, such as self-feedback and culturally sensitive feedback. © 2024 Sciedu Press. All rights reserved.

The article provides a dataset derived from Scintrex CG-5 gravity meter observation files collected during five years of annual measurements along the Zhetygen calibration line utilizing three meters. Geoken, a Kazakhstani enterprise, routinely conducts these measurements to calibrate its meters necessary for manufacturing operations. Researchers can use this constantly updated dataset to study the behavior of the CG-5 gravity meters' calibration function in time and the measurement range. The measurement range is 100,900 µGal. © 2024 The Author(s)

The research was performed in the context of examinations of refractory matrix composite feasibility for such applications as plow blades or mining drill bits. In the experiments, the WC matrix was used with Co binder, and zirconia played the role of the particulate filler. ZrO2 is known and appreciated for its wear resistance, high fracture toughness, and high hardness. It forms the tetragonal metastable phase t-ZrO2 and the termodynamically stable monoclinic phase m-ZrO2. The WC-Co-ZrO2 composite samples were made of the powders using an innovative, energy-saving, field activated vacuum hot-pressing unit. The alternating current passing through the graphite mold and the sample was the sole heat source, providing high heating rates up to 300 °C/min and a relatively short sintering time of several minutes. As a result, nanoscale features were preserved in the composite structure ensuring high hardness and wear resistance. In particular, during microindentation, the work of elastic deformation was We = 0.162 μJ, while the work of plastic deformation was Wp = 0.484 μJ, which showed that the elastic part of indentation work was ηIT = 26.58%. This can be explained by transformation toughening phenomena, which take place when tetragonal zirconia t-ZrO2 transforms to the monoclinic phase mZrO2, which is accompanied by the changes of the specific volume. This, in turn, generates compressive mechanical stresses suppressing crack propagation, improving elasticity of the composite. At the next stage of the investigations, it is planned to perform tribological tests. © 2024 Latvia University of Life Sciences and

Purpose. Development of an innovative methodology for exploring groundwater deposits for the conditions of rural areas of the Mangystau Peninsula, which will allow finding sources of groundwater with acceptable mineralization with a minimum number of drilled wells. Methodology. The assigned tasks were solved using a comprehensive research method, which includes a review and synthesis of literary sources; patent market research; study of geological and hydrogeological conditions of the work area; critical analysis of existing methods for exploration of groundwater deposits; studying and summarizing previously conducted exploration work in the area and developing recommendations for improving exploration methods. Findings. The reasons for the insufficient use of groundwater reserves on the Mangystau Peninsula have been established. A highly effective method for exploring groundwater deposits has been developed, taking into account the specific features of the Mangystau Peninsula – vast sparsely populated areas and the chaotic location of aquifers with acceptable mineralization. Reducing the number of wells drilled is achieved by searching and identifying the boundaries of the aquifer using successive cycles with a moving center, which allows you to systematically explore the area and find the best aquifers. Originality. For the first time, a methodology for exploring groundwater deposits has been proposed, the main provisions of which are as follows: exploration wells are drilled with a small diameter, and only wells that have uncovered horizons with acceptable mineralization are subject to expansion; wells are drilled using a combined grid, combining the capabilities of radial and regular grids; the centers of the first cycle of the exploration grid are existing water intakes containing water with acceptable mineralization; from such centers, drilling is carried out along a radial grid of six wells; when a horizon with acceptable mineralization is discovered, the discovered well becomes the center of the second cycle of a radial grid of six wells, at least three of which have already been drilled in the previous cycle. Further exploration continues with subsequent cycles with the goal of constructing wells with acceptable flow rate and mineralization. Practical value. The implementation of the developed methodology is of great practical importance for the further development of oil and gas production, industrial production and agriculture of the Mangystau Peninsula, as well as social significance for meeting the needs of the growing population of the region for high-quality water for drinking and household water supply. The use of the developed methodology makes it possible to reduce the number of useless wells, minimizing exploration costs. © Biletskiy M.T., Ratov B.T., Khomenko V.L., Yesturliyev A.E., Makhitova Z.Sh., 2025.