bluuebunny/crossref_metadata_2025 huggingface dataset:
Transboundary water management in Kyrgyzstan: International law aspects
Authors: Dzhumagulov Aidar Muratovich , Baigazieva Damira Mamytkanovna , Eshmuradova Nasiba Dustmuradovna
Published: May 2024

This article explores the intricate dynamics of international water management, focusing on Kyrgyzstan's pivotal role in Central Asia's water resource distribution. It begins by highlighting global water scarcity issues and emphasizes the growing importance of international water law and liability for transboundary harm. Employing a range of scientific methodologies, the study delves into historical contexts, including Soviet-era water management initiatives and subsequent challenges post-dissolution. It elucidates the establishment of river basin organizations and the complexities of inter-state agreements and disagreements. The discussion section offers diverse perspectives on key issues such as equitable resource allocation and infrastructure maintenance costs, drawing from expert opinions and scholarly insights. Recent positive developments in interstate relations, particularly between Kyrgyzstan and Uzbekistan, regarding water resource management agreements are highlighted. In conclusion, the article advocates for bilateral agreements and regional cooperation to address water-related conflicts, proposing the potential creation of a supranational organization akin to the European Coal and Steel Community. Such initiatives aim to ensure equitable and sustainable water resource management while fostering economic cooperation in the region.
Multiplier of consumer expenditures in the model of economic management of water resources of the Kyrgyz Republic
Authors: Fynchina Khicheza , Fynchina Firuza , Tadzhibaeva Takhmina , Tokoev Baktyyar , Sherbekova Anarbubu
Published: May 2024

The expenses of the population are one of the main factors determining aggregate demand, which creates the basis for the reproductive process and economic development of the state. The volume of aggregate demand in the Kyrgyz Republic is largely determined by the development of trade and economic cooperation with China. This justifies the relevance of assessing their impact on economic growth against the background of new challenges of various kinds in the conditions of unstable social and economic development of Kyrgyzstan. The relations of trade indicators with China and GDP, the value of final consumption of Kyrgyz households as part of GDP in comparison with other countries are shown. The calculated indicators of marginal propensities to consumption and saving are analyzed; the multiplier of expenditures for Kyrgyzstan. A noticeable dependence of the indicator of economic development and foreign trade activity with the use of statistical and economic-mathematical methods with an acceptable coefficient of elasticity has been revealed. Conclusions are drawn about the impact of consumer spending on aggregate demand and changes in GDP, about the correspondence of real processes to the Keynesian theory of the investment multiplier and individual deviations from it in a developing economy.
The Role of Water in Hospitality: A Comparative Analysis of the Kyrgyz Conceptual Worldview
Authors: Ibraimova Gulsaara Ozgonbaevna , Kalieva Kanykey Akimovna
Published: May 2024

This paper explores the role of water in Kyrgyz culture, examining its significance in the context of globalization and its implications for the hospitality industry. Drawing from cultural practices involving water as a symbol of hospitality, we explore how cultural sensitivity and understanding shape cross-cultural communication and influence employee and tourist behavior in the hospitality. Through an analysis of traditional customs and proverbs related to water, we seek to provide a deeper understanding of the role of water in fostering hospitality and building connections in a globalized world.
Actual problems of attracting funding for scientific and educational activities
Authors: Lyapuntsova Elena Viacheslavovna , Belozerova Julia Mikhailovna , Vlasova Vita Vladimirovna
Published: May 2024

The article aims to analyze the changing role of higher education teachers both in general and in the context of their necessity and ability to participate in fund raising for scientific and educational activities. Using methods of analysis and systematization, the authors examined the role of a teacher in the light of the concept of sustainable development goals developed by the UN General Assembly. Namely, we consider its impact on achieving at least three goals that can also be achieved via raising additional funding to the scientific and educational spheres. The most relevant sources of such additional funding were identified and studied in detail from the authors’ point of view: crowdfunding, targeted capital (endowment fund), and the Russian Science Foundation (RSF). The essence, features, advantages, and relevance of each funding method were studied. As a result of the research, the importance of the participation of higher education teachers in attracting additional funding to higher education institutions was emphasized, and the need for them to acquire new competencies was identified. Based on this, we developed a structure for a professional development course. The course is aimed at increasing the level of awareness of teachers about funding opportunities and mastering tools for fund raising
Modernization of the competencies of construction managers in the implementation of projects using BIM
Authors: Zharov Iaroslav V.
Published: May 2024

The use of Building Information Modeling at the construction stage of the facility involves not only the use of new technologies, but also the revision of the functional roles of participants in the implementation of the investment and construction project. The purpose of the study is to identify functional changes in the organizational structure of the State Customer (Developer) in the process of use Building Information Modeling at the stage of construction of a capital construction facility. The novelty of the research lies in the comprehensive consideration of the issue of the formation and development of digital competencies through the clustering of the organizational structure and the formation of a reference model of interrelated processes. As a result of the research, a scheme of functional roles has been developed in the context of the organizational structure of the State Customer (Developer), necessary to ensure the effectiveness of construction project management using information modeling technologies the formation of information models both at the stage of architectural and construction design and at the stage of construction and installation works.
Study of the thermal protection characteristics of composite aerated concrete lintels when optimizing the life cycle of a building
Authors: Suleymanova Lyudmila , Hameed Adham A.
Published: May 2024

The article is devoted to the study of the effectiveness of various methods of reinforcing composite aerated concrete lintels intended for window and door openings in the construction of civil buildings. The authors have developed a composite aerated concrete lintel for window and door openings, which includes two or three aerated concrete blocks and a seam at the ends made with polyurethane glue. The lintel reinforcement is made in the form of tape and parts of carbon fiber tape attached to aerated concrete blocks. The article provides a comparative analysis of various methods of reinforcing lintels made of aerated concrete, including steel rods and glass-composite reinforcement, as well as external tape reinforcement using carbon tapes. The results of the study allow us to conclude that external tape reinforcement with carbon fiber tapes is the most effective method. The most thermally efficient type of lintel reinforcement is external tape reinforcement with carbon fiber tapes, since the reduced heat transfer resistance is 6-10% higher than that of similar lintels with another type of reinforcement, and 10-28% higher than traditionally used lintels (reinforced solid lintels and composite U-shaped lintels).
Technological Installation Drawings of Roof Construction and Suspended Ceilings Using Combined Method
Authors: Golovanov A. , Selina A. , Belyaeva D.
Published: May 2024

The article describes various installation schemes for roofing structures and suspended ceilings using combined method for industrial buildings. The article inspects three installation options for assembling building elements: transversal motion of the crane across spans, working motion of the crane across the spans with idle returns, and installation spanwise. The advantages and disadvantages of each mounting option are also discussed. The article describes in detail methods of installing structural elements of a building, which allows the work to be completed with minimal labor costs. Schemes for installing coating structures and suspended ceilings using combined method are also considered.
Comparative assessment of groundwater quality challenges confronting Mediterranean coastal aquifers: A synoptic review
Authors: Bouhout Sara , Haboubi Khadija , El Hammoudani Yahya , Haboubi Chaimae , El Abdouni Aouatif , Elyoubi Mohamed Salahdine , Dimane Fouad
Published: May 2024

Coastal aquifers, essential for agriculture, domestic, and industrial water supply, face significant sustainability challenges, particularly in Mediterranean regions, due to the adverse effects of human activities, climatic threats, and natural geological conditions causing salinization. This paper synthesizes findings from studies on three Mediterranean coastal aquifers— the Pleistocene aquifer in the Gaza Strip, the karstic aquifer in Bokkoya, and the MioPlio-Quaternary aquifer in Djeffara of Medenine—highlighting the escalating deterioration due to over-exploitation and arid conditions. It compares the methodologies used in these studies, such as statistical analysis, geostatistical modeling, and groundwater quality indices, to assess groundwater quality and address salinization challenges. This review aims to identify methodological limitations and propose strategies to fill research gaps, particularly in combating seawater intrusion, to enhance the sustainable management of these critical water resources.
Assessment of Trace Metal Contamination in Bivalve, Mytilus galloprovincialis, By Bioconcentration Factor (BCF) in the Moroccan Mediterranean Coast Environment
Authors: El Boudammoussi Mustapha , El Hammoudani Yahya , Haboubi Khadija , Benaabidate Lahcen , Achoukhi Iliass , Touzani Abdelaziz , Moudou Mohamed , Faiz Hatim , Dimane Fouad
Published: May 2024

This study investigates the pollution of Morocco’s Mediterranean coastal zones by trace metals, highlighting its significance due to detrimental impacts on marine ecosystems and potential health risks through the food chain, exacerbated by the expansion of coastal areas in recent years. It focuses on measuring concentrations of trace metals such as copper, cadmium, lead, and chromium in the bivalve Mytilus galloprovincialis and surrounding seawater across three sites along the northern Moroccan Mediterranean coast. This research aims to evaluate metal bioaccumulation levels using the Biota Concentration Factor (BCF). Seawater samples were examined using both flame and graphite furnace atomic absorption spectrophotometry, while bivalve tissue samples underwent analysis through Inductively Coupled Plasma Optical Emission Spectrometry. Findings indicate that M. galloprovincialis significantly accumulates trace metals, with concentrations in descending order: Pb, Zn, Cr, Cu, and Cd. Conversely, the seawater metal concentration sequence was Zn, Cu, Cr, Cd, and Pb. The study applied BCF thresholds from Regulation (EC) No 1907/2006 (REACH) and the US EPA’s Toxic Substances Control Act (TSCA), categorizing metals as “bioaccumulative” (BCF between 1000 and 5000) and “very bioaccumulative” (BCF over 5000). This distribution provides insights into the toxicity and bioaccumulation of metals, underscoring the environmental and health implications for the marine ecosystem and species like M. galloprovincialis.
Assessment of Water Treatment Processes and Quality Parameters at the Al Hoceima Desalination Plant
Authors: Aoueryagel Iman , Chaouket Faiza , Bensitel Nihade , Raissouni Ihssane , Bouchta Dounia
Published: May 2024

Water is a vital resource essential for sustaining life and supporting human development. In the face of increasing population growth, urbanization, and environmental challenges, ensuring access to clean and safe drinking water remains a global priority. This study focuses on assessing the efficacy of water treatment processes at the Al Hoceima Desalination Plant in Morocco, examining various parameters to evaluate water quality improvement. Physicochemical parameters such as pH, conductivity, turbidity, total hardness, alkalinity, chloride, sulfate, calcium, magnesium, and dissolved oxygen, as well as bacteriological indicators including Escherichia coli, intestinal enterococci, coliforms, specific growth rates at 22°C and 37°C, and clostridia spores, were analyzed. The study aims to provide insights into the effectiveness of advanced treatment technologies in producing potable water and ensuring a sustainable water supply. Results indicate significant improvements in water quality following treatment processes, highlighting the importance of reverse osmosis in meeting water quality standards and addressing water scarcity challenges.
Exploring salinity origins in the Ghiss-Nekor aquifer, northern Morocco: A multivariate statistical analysis
Authors: Bourjila Abdelhak , Dimane Fouad , Ghalit Mohammad , Taher Morad , Kamari Salim , El Hammoudani Yahya , Achoukhi Iliass , Faiz Hatim , Haboubi Khadija , Benaabidate Lahcen
Published: May 2024

The Ghiss-Nekor coastal aquifer is characterized by high salinity stemming from multiple sources, remains poorly investigated. This study aims to address this knowledge gap by employing both univariate (descriptive statistics) and multivariate statistical analyses, including correlation matrix and principal component analysis (PCA). Groundwater samples were collected from 52 sites across the study area and meticulously analyzed for pH, TDS, EC, and the ions such as Na+, K+, Mg2+, Ca2+, NH4+, HCO3-, NO3-, NO2-,Cl-, SO42-, PO43-, and SiO2. Descriptive statistics, notably standard deviation (SD), highlight the diverse sources contributing to salinization, among which seawater intrusion (SWI) emerges as a significant factor. Correlation matrix analysis underscores multiple pathways for salinization, implicating SWI, salt dissolution, chemical weathering, secondary salt leaching, and anthropogenic activities. PCA elucidates 81.05% of the total variance in physicochemical parameters, with strong loadings observed for EC, Na+, Cl-, and Mg2+, corroborating the influence of SWI and suggesting evaporation processes. Moreover, PCA reinforces the potential influence of both geogenic and anthropogenic factors in salinization within the study area. This comprehensive investigation provides valuable insights into the elevated salinity levels observed in the Ghiss-Nekor aquifer, contributing to a deeper understanding of its hydrogeochemical dynamics.
Power PV Forecasting using Machine Learning Algorithms Based on Weather Data in Semi-Arid Climate
Authors: Boujoudar Mohamed , Bouarfa Ibtissam , Dadda Abdelmounaim , Elydrissi Massaab , Taj Amine Moulay , Abraim Mounir , Ghennioui Hicham , Bennouna El Ghali
Published: May 2024

As the energy demand continues to rise, renewable energy sources such as photovoltaic (PV) systems are becoming increasingly popular. PV systems convert solar radiation into electricity, making them an attractive option for reducing reliance on traditional electricity sources and decreasing carbon emissions. To optimize the usage of PV systems, intelligent forecasting algorithms are essential. They enable better decisionmaking regarding cost and energy efficiency, reliability, power optimization, and economic smart grid operations. Machine learning algorithms have proven to be effective in estimating the power of PV systems, improving accuracy by allowing models to understand complex relationships between parameters and evaluate the output power performance of photovoltaic cells. This work presents a study on the use of machine learning algorithms Catboost, LightGBM, XGboost and Random Forest to improve prediction. The study results indicate that using machine learning algorithms LightGBM can improve the accuracy of PV power prediction, which can have significant implications for optimizing energy usage. In addition to reducing uncertainty, machine learning algorithms improve PV systems’ efficiency, reliability, and economic viability, making them more attractive as renewable energy sources.
Valorizing Olive Oil Mill Wastewater: Transforming Waste into Natural Soaps
Authors: El Abdouni Aouatif , Haboubi Chaimae , El Bastrioui Mohamed , El Ahmadi Kawthar , El ALaoui Hasnae , Achoukhi Iliass , El Hammoudani Yahya , Dimane Fouad , Haboubi Khadija
Published: May 2024

In this research, the main objective is to find a solution to the problem of olive mill wastewater (OMWW). This solution involves the recovery of liquid waste produced by the crushing units, which contain a significant amount of oily residues despite their initial treatment. The concept is based on separating these discharges into aqueous and oil phases and using the latter to manufacture natural soaps.

The liquid waste from the extraction of olive oil has a significant content of oily residues, characterized by a very high acidity (2.73%), exceeding the value of edible olive oil, as well as a high saponification index (186.2 mg KOH/g), making it an ideal source of fat for saponification.

The results of the valorization of the OMWW in soap manufacturing reveal several significant elements. First, following the characterization of cold and hot products, a clear preference emerges in favor of soaps made using the cold process. In addition, the production yield is notable, with a rate of 94% for cold saponification and 89.9% for hot saponification, highlighting the efficiency of the process. Finally, the study highlights the importance of the quantities of fatty acids used in the formulation of soaps. An optimal formula is identified, comprising 40% oils recovered from the OMWW, 30% olive oil, 20% cocoa oil, and 10% castor oil, demonstrating the need for a precise balance to obtain quality soaps.

This study solves the problem of the OMWW by reusing them to make natural soaps, thus reducing industrial waste. It also opens up new economic opportunities by creating a profitable and environmentally responsible production chain, promoting the transition to a circular economy.
Assessing Morphological Trait Variability in Moroccan Carob (Ceratonia siliqua L.) Ecotypes for Adaptive Breeding in Response to Climate Change and Sustainable Food Security
Authors: Mouniane Yassine , Chriqui Ahmed , El-Khadir Issam , Hbyaj Karima , Rochd Atif , Aitouhanni Imane , Kouighat Mohamed , Hmouni Driss
Published: May 2024

The study focused on the morphological diversity of pods and seeds from six ecotypes of carob tree (Ceratonia siliqua L.), originating from different regions of Morocco including Khemissat, Safi, Aït Attab, Berkane, Ouezzane, and Agadir. Thirty pods per ecotype were collected from 10 different trees. Measurements were taken to analyze the morphology of seeds and pods. The results revealed significant differences among ecotypes for most morphological characteristics such as pod length, pod width, pod thickness, total pod weight, pulp weight, total number of seeds in the pod, seed weight within the pod, seed length, seed width, seed thickness, single seed weight, and weight of 100 seeds. Correlation analysis revealed associations among different morphological measures, highlighting the influence of pod morphology on seed yield. Principal component analysis (PCA) and hierarchical clustering analysis confirmed the presence of two distinct groups of ecotypes: the first group comprising the ecotypes Agadir, Aït Attab, Safi, and Khemissat, while the second group included the ecotypes Berkane and Ouezzane. These results have significant implications for variety selection and improvement of carob tree cultivation, with significant potential to enhance food security in Mediterranean regions. By better understanding the impact of ecotype on morphological characteristics, selection efforts can be directed towards developing varieties better adapted to changing environmental conditions, thereby contributing to strengthening the resilience of agricultural systems face of climate change.
Enrichment of mineral raw materials: Selection of local clay minerals for the purpose of obtaining adsorbents for purification of petroleum products
Authors: Mamadalieva Sadokat , Mirzakulov Gulomkodir , Kakharov Erkin , Sodikov Usmonali , Kurbanova Umida , Makhmudov Sodir
Published: May 2024

Geotechnologies and subsoil use play a key role in the rational development of the mineral resource complex, requiring innovative approaches to the enrichment of mineral raw materials. This article discusses a promising direction in the beneficiation of mineral raw materials, focused on obtaining adsorbents from local clay minerals for the effective purification of petroleum products and environmental protection. The article presents a study on the potential of local clay minerals to create effective adsorbents using a mechanochemical activator. The study includes a review of the chemical and mineralogical composition of clays collected in the region, as well as their particle size distribution and differential thermal analysis.
Monitoring the filling of the landfill using the results of aerial photography
Authors: Akhmetzyanova Leisan , Usmanov Bulat , Zinnatov Marat , Kuritsin Ivan
Published: May 2024

The important task of landfill current residual capacity assessment was solved in this work. The modern methods of high-precision three-dimensional reconstruction were used by the results of unmanned aerial vehicle survey, equipped with a global navigation satellite system receiver. The main stages of work were combining the project and field survey data into one coordinate and height system, reconstruction of designed underground and above-ground parts of landfill, project and actual model comparison, the calculation. As a result, the estimation of the landfill residual capacity becomes possible, which allows to develop recommendations for further landfill operation. The proposed approach allows rapid and high-quality active monitoring of the engineered facility. Photogrammetric processing of the results of low-altitude aerial photography makes it possible to obtain objective data on the current actual state of the landfills, to carry out competent and valid management of the landfill functioning. Such studies can significantly extend the landfill’s lifetime, minimize the negative impact on the environment and predict the attainment of projected capacity much more accurately.
Study of technological properties of aqueous solutions of polyacrylamide and fcl-1 with different concentrations
Authors: Abdukarimova Dinara , Eminov Sherzod , Polvonov Khurshid , Mirzaev Navruzbek , Masobirova Dilnoza , Ibragimov Farkhodjon
Published: May 2024

The quality and preparation methods of cotton seeds play a crucial role in increasing crop yield. Seed swelling capacity, germination energy, and laboratory germination are essential characteristics for precision sowing. The excessive fibrous covering on cotton seeds necessitates linting and delinting processes to ensure uniform distribution during sowing. However, existing methods have drawbacks, and none can be considered perfect. The results of a study on the structures, compositions, and physicochemical properties of polyacrylamide and other ingredients are presented. The potential utilization of these substances in the development of composite chemical preparations for cotton seed treatment is demonstrated. Based on the research findings, it is evident that the concentration of PAA significantly affects the viscosity, density, and water retention of the solutions. Choosing the right PAA concentration allows for the targeted regulation of the technological parameters of the solutions.
Wild almond (amygdalus nana l.) Oil physical and chemical indicators, fatty acids and the study of element components
Authors: Nematov Zafar , Abdiramanova Zamira , Khamidov Orifjon , Muxammatova Umida , Tukhtaev Khakim
Published: May 2024

The wild almond (Amygdalus nana L.) seeds from the Nurota district in the Navoi region of the mountains have been used, and the extraction of the seed oil was established using the cold-pressing method. The main physical-chemical indicators of the oil were defined. The composition of the oil, including the induction of the oil and argon plasma emissions, as well as the fatty acid components, were studied using chromatographic and spectrometric methods, and elemental analysis was carried out. The macroelements (Ca, Na, Al, P, K) and micronutrients (Fe, Cu, Zn, Se, Mn, Co, Ni) present in the oil composition were determined. Additionally, a microbiological purity assessment and a quantitative analysis of the heavy metals present in the oil content were conducted.
Equilibrium of the solubility isotherm in systems Cobalt(II) chloride-glutamic acid-water
Authors: Aliev Togaymurot , Ernazarov Komil , Khusenov Kakhramon , Karimov Zokir , Kholikova Nazokat
Published: May 2024

The study is focused on the interaction between glutamic acid and hexavodic cobalt chloride. The solubility curve, influenced by the high solubility of the initial components, extends horizontally along a catheter corresponding to the cobalt chloride content. The secretion of glutamic acid exhibits a gradual increase over a relatively extended period. As the cobalt chloride concentration in the solution reaches 25.04%, a new phase emerges, resulting from the molecular interaction of the reactants, forming a double dihydrous compound comprising one molecule of glutamic acid and cobalt chloride: C5H9NO4∙CoCl2.
Investigation of the structure and morphology of modified materials based on polyvinyl chloride
Authors: Juraev Ilhom , Karimov Mahmud , Rustamov Makhammasidik , Mukhiddinov Bakhodir
Published: May 2024

The use of polyvinyl chloride in practice is associated with many difficulties due to the hydrophobic nature of the polymer surface. This can lead to great adverse consequences when used in technological processes of the chemical industry and hydrometallurgy. Due to its high hydrophobicity and low surface free energy, PVC has a low degree of wettability with water, resulting in low ion sorption capacity, as well as undesirable protein absorption and bacterial adhesion. The aim of the work was to increase the hydrophilicity of the surface of industrially produced powdered PVC by modifying it with various organic amines and, as a result, hydrophilic ion-exchange materials of various structures and morphology will be obtained on its basis. The course of the reactions was studied by potentiometric titration, IR spectroscopy, and diffractionometry. The correlation between the morphology and chemical properties of the products obtained in the studied reactions and the formation of new covalent bonds in the structure of the polymer matrix was investigated using IR spectroscopy and diffractionometry. The influence of the nature of the modifying reagent, solvent and temperature on the modification process has been established.
Enhancing technical solutions to reduce fuel energy consumption of drilling equipment during well drilling with air cleaning
Authors: Djurayev Rustam , Allanazarov Bayrambay , Khatamova Dilshoda
Published: May 2024

Efficient fuel and energy resource utilization in drilling equipment can be attained through strategies such as decreasing the relative consumption in technological systems during well drilling, enhancing the integration of secondary energy resources in the equipment's power supply system, and refining the design of drilling equipment and technologies. This article showcases the outcomes of pilot studies conducted on a diesel power plant within a drilling rig and a device designed for recycling secondary energy resources from a compressor.
Effects of titanium (Ti) contents on the wear resistance of low-alloy steel alloys
Authors: Kholmirzaev Nozimjon , Turakhodjaev Nodir , Saidmakhamadov Nosir , Khasanov Jamshidbek , Bektemirov Abdujalol , Sadikova Nargiza
Published: May 2024

In this study, the impact of titanium (Ti) on low-alloy steel alloys is examined, focusing on the mechanical properties of the alloy with varying Ti content levels. Heat treatment was conducted to enhance the mechanical properties and performance indicators of the casting samples. The elemental volume distribution mapping and microstructure analysis of the research samples were performed using SEM - Carl Zeiss Ultra Plus Field Emission. Subsequently, the hardness and wear resistance characteristics of samples containing Ti contents of 0, 0.1, 0.3, 0.5, 0.8, and 1.1 were evaluated post heat treatment. Notably, steel samples containing 0.3% and 0.5% Ti, exhibiting structures of ferrite, martensite, and limited bainite, demonstrated superior hardness and wear resistance properties. Abrasive wear resistance tests were conducted using a specialized device with a horizontal diamond disc. The primary objective of this research is to introduce the developed technology for the rolling mill rolls at a prominent metal manufacturing enterprise in the republic, resulting in enhanced economic efficiency through increased production volume. Consequently, achieving a hardness of HB 323 and improving wear resistance by 1.2 times were notable outcomes of the study.
Evaluation of efficiency of rotary friction welding in obtaining joints from corrosion and heat resistant steel
Authors: Tokarev Andrei , Yakhin Azat , Karetnikov Denis
Published: May 2024

The efficiency of using rotary friction welding in obtaining joints from 20Cr13 steel has been evaluated. For this purpose, test samples with welded joint and from the base metal were made, and then microstructure studies and tensile tests were carried out. As part of the microstructure study, the structure of the welded joint metal and base metal was determined. As a result of tensile tests, the tensile strength, relative elongation after rupture, and fracture area were determined for the base metal and welded joint specimens. These tests have shown that friction welding can produce joints without the use of heating during welding.
Methods of using waste from steam-gas thermal power plants
Authors: Olzhaev Dilshod , Nurmurodov Tulkin , Ganiev Kahramon , Barakayev Mukhriddin , Mansurova Shabnam , Khurramov Navruzbek
Published: May 2024

At present, the composition of steam and condensate in periodic motion during 45кthe continuous operation of thermal power plants is getting worse and worse. Great importance is attached to the prevention of industrial wastewater pollution. In industry, water is used as a raw material and energy source, as a coolant or heater, as a solvent and extractant, and it is purified in wastewater treatment plants and discharged back into water bodies. Therefore, it is important to further improve the engineering work of wastewater treatment in water conservation. Water is the main technological raw material for obtaining steam in thermal power plants. It is the most widely used product in the continuous operation of the plant.
Electromagnetic converter of reactive power and monitoring of high-voltage induction motors
Authors: Abubakirov Azizjan , Eshmuratov Naurizbek , Esemuratova Gulayim , Nazarov Muzaffar
Published: May 2024

In this paper, the control and monitoring of reactive power in an over-voltage induction motor are elucidated through a comparative analysis of theoretical and practical research findings. These results are based on structural principles, research models, and the static, dynamic, metrological, and technical characteristics of three-phase electromagnetic current converters, evaluated against established criteria. The effectiveness of employing current converters with straightforward design, high sensitivity, speed, and reliability, along with simple switching elements that transform the primary input stator current into a secondary voltage output signal, is emphasized. Utilizing a graph model, the static characteristics of the stator current to secondary voltage converter, essential for regulating and monitoring the reactive power of an asynchronous motor, are delineated, and a research algorithm is developed.
Studying the possibility of applying spectral methods for the analysis of chemical elements and radionuclides
Authors: Urunov Isoqul , Allaberganova Gulchehra , Muzafarov Amrullo , Quvvatova Mohinur
Published: May 2024

This article presents the results of a study of the possibility of using spectral methods for analyzing chemical elements and radionuclides. As is known, in uranium production processes, chemical elements and radionuclides behave differently and they are distributed in different concentrations. Therefore, the main tasks of analytics are to determine the concentration and specific activity values of chemical elements and radionuclides in samples taken from various uranium products of uranium production. The magnitude of radiation factors at a local location of a uranium product is assessed by determining the values of these factors and the amount of various radionuclides contained in these samples. In laboratory conditions, the concentrations of U were determined by X-ray fluorescence analysis, the specific activity of 230Th, 226Ra, 40K and 137Cs was determined by gamma spectrometric analysis, and the isotope concentrations of 234U, 235U, 238U were determined by alpha spectrometric analysis. The results obtained were compared with the passport data of standard samples - SOUR, OSK-6, OSK-9, OSGI. Determining the concentration and specific activity values of various chemical elements and radionuclides in uranium products is of scientific and practical interest, and solving this issue is an urgent task of nuclear physics and analytics.
Analysis of the influence of thermal and thermocyclic technology on the properties of maraging steel
Authors: Ashurov Zhasur , Juraeva Malokhat , Pardaev Azimjon
Published: May 2024

The article presents experimental data obtained by studying the influence of changes in the geometry of parts made of maraging steels, depending on the modes of thermal and thermal cycling treatment with heating in the temperature range of α-γ transformation. The experiments were carried out on samples cut from hot-rolled sheets, pre-hardened at a temperature of 1000°C for 1 hour. Using the accelerated testing method, the relative change in resistance to stress corrosion damage was determined depending on the phase composition and aging temperature (strength) of maraging steel.
Improvement of transportation process management effectiveness: Assessment and analysis of network topologies
Authors: Nadezhkin Vadim A. , Nadezhkina Snezhana A. , Zolkin Alexander L. , Burakova Anzhelika V. , Zhuravleva Irina V.
Published: May 2024

The article focuses on such a concept as “network topology”, which plays an important role in increasing the efficiency of managing the transportation process on the railway. The authors carry out detailed analysis of such network topologies as star, ring, bus, tree and others, and also explore their potential for improvement of the efficiency of railway transportation management. The work examines the advantages and disadvantages of each topology, and also evaluates their capabilities for optimizing the transportation process. Evaluation and comparative analysis of varieties of different network topologies is a relevant and interesting area of research. The results of the study confirm that the choice of a specific network topology can significantly affect the efficiency of transportation process management. Some network topologies can significantly reduce shipping costs and improve the overall delivery record, while other topologies can have the opposite effect.
Automation of inspection of rolling stock at a maintenance point using a robotic complex
Authors: Kiselev Gennady G. , Zolkin Alexander L. , Bityutskiy Alexey S. , Bogdanov Mikhail R.
Published: May 2024

The article discusses the need to improve the efficiency of freight cars operation by introducing modern technologies in the maintenance process. To improve the quality of technical inspection of rolling stock at the maintenance point, it is offered to introduce a robotic complex capable of autonomously conducting technical inspection and diagnostics of rolling stock. Structurally, the robotic complex includes: chassis; manipulator; automation, control and data transmission system; diagnostic equipment; power unit. The possibility of using various diagnostic tools, vision systems, non-contact scanning sensors is considered. The functions of the complex are to pass through the inspection positions, identify malfunctions, accumulate information about the technical condition of the car with the transfer of information to the fleet operator or maintenance point.
Prospects for deployment of integrated production automation systems using artificial intelligence
Authors: Zhukov Aleksandr , Berkutova Tatiana , Zhurenkov Denis , Tikhonov Arkady , Khachaturyan Karine , Kartsan Igor
Published: May 2024

The article considers the directions of application of artificial intelligence in the deployment of integrated systems of production automation at all stages of the product life cycle: design and engineering, production, equipment control, control and monitoring during production and operation, in-process logistics and management of interaction with suppliers and customers. Three strategies for the implementation of complex production automation systems using artificial intelligence are proposed: a strategy for solving local production and technological problems, a strategy for the development of virtual reality technologies, and a strategy for comprehensive digitalization within the framework of Industry 4:0.
Fuzzy MIMO model for efficient control of complex processes with uncertainties and nonlinearities
Authors: Mukhitdinov Djalolitdin , Kadirov Yorkin , Shamsutdinova Vinera , Chulieva Gulnoza , Abdullaeva Dildora , Jumabaev Rasul
Published: May 2024

This paper shows the impact of the MIMO model on control system solutions for efficient control of complex nonlinear processes (multiple input, multiple output model) in terms of efficiency, product quality and energy efficiency. In modern automatic control systems, there is a need for increased capacity in long-distance data transmission, high-speed local area networks, etc. Capacity can be increased by extending the frequency range. However, the application of these techniques is limited by biosafety requirements, limited power supply (in mobile devices), and electromagnetic compatibility. Therefore, if these approaches to communication systems do not ensure the speed of transmission of information about technological processes, a weak correlation will appear. The values of indicators for the construction and use of fuzzy MIMO models of control decisions are expressed in the form of linguistic variables. The fuzzy MIMO model makes qualitative decisions in the control of complex processes. This includes uncertainty and nonlinearity problems, which are used to optimize complex systems.
National transport and logistics system: navigating challenges for development until 2030
Authors: Abdullina Leila , Suvorova Anna , Zagidullin Ramil , Romanishina Tatiana , Tsygankova Ekaterina
Published: May 2024

This scientific article explores strategies for developing national transport and logistics system, taking into account external factors. The authors analyze potential directions for market diversification and infrastructure development, focusing on cooperation with Asia, Africa, and CIS countries. The main problems and prospects for the Russian economy are also discussed in the context of inflation and the need for government investment and regulation.
Development of technology and methodology for monitoring the technical condition of metalcutting machines
Authors: Yakhshiev Sherali , Egamberdiev Ilkhom , Mamadiyarov Akmal , Saibov Maruf , Karimova Nazokat
Published: May 2024

This work was carried out with the aim of developing the basic provisions of an automated vibration monitoring system for metal-cutting equipment. The paper presents the theoretical foundations of vibration monitoring technology, which uses regular measurements of vibration parameters, their frequency analysis, and mathematical modeling of degradation processes in machines. Vibration monitoring technology allows to determine the time points necessary for repair and maintenance of equipment based on its actual condition. Applications of vibration monitoring are reducing losses associated with equipment failures and reducing maintenance and repair costs, as well as increasing the safety of work. The most relevant is the implementation of a vibration monitoring system when diagnosing the technical condition of bearings and gears (metal-cutting machines, hydraulic systems). As a result of the research, diagnostic models of changes in the technical condition of metal-cutting machines and vibration characteristics of typical defects were obtained. A method has been developed for assessing the dynamic quality of metalcutting machines using a complex quality indicator determined by measuring and analyzing the spectral characteristics of vibration signals.
Experimental study of improved constructions increasing the efficiency of ball mill protective coatings used in enrichment factories
Authors: Azamatovich Nabijon , Abdullayev Sardor , Zhuraev Akbar , Turdiyev Sardorjon
Published: May 2024

Nowadays, ball mills are widely used in beneficiation enterprises of the mining industry, cement and similar production plants. As a result of the development of new mines in our republic, the process of extracting minerals in the mining industry is being carried out step by step. Due to the increase in the volume of mined minerals, the need for ore crushing mills is increasing. Taking into account all mentioned the above, in this article, the test results of the improved constructions of the internal protective coatings of the ball mills, which are considered as the main working member of the ball mills used in the enrichment and processing of minerals at the hydrometallurgical plants belonging to “Navoi Mining Metallurgical Combine” JSC and measures to increase the efficiency of mills were presented.
Geological and technological viewpoint on 3D Deposit Model – examples of use in Pniówek Coal Mine
Authors: Golda Katarzyna , Paszek Lesław , Kulpa Jarosław
Published: May 2024

During the more than 3 years of the “Quality” program at JSW S.A., a geological database has been built from scratch, collecting data from all exploratory boreholes, roadway profiling and the results of chemical analyses in one place – placing particular emphasis on parameters affecting the quality of coke. Working with digital databases requires new competencies for geologists – the ability to efficiently obtain information ready for further processing. As intended, the geological model became the basis for forecasting the quantity and quality of mined coal used in coke production. In the course of the work, a discrepancy became apparent between the geological interpretation of the structure of the deposit – as understood by the assumptions of the geological documentation, and the technological conditions of mining. The article presents resulting changes in the approach to modeling lithology and quality parameters. In addition, examples of the application of the geological database and the geological model in the daily work of the geological department are presented.
The usege of artificial intelligence in the activities of mining enterprises
Authors: Psyuk Vladyslav , Polyanska Alla
Published: May 2024

The achievements of Industry 4.0 are penetrating more and more widely and deeply into various spheres of economic activity. The article discusses the directions of using artificial intelligence (AI) in solving the problems of development in mining enterprises. Methods of achieving results in various directions using AI have been determined. Based on the characteristics of neural networks formation components, the model of the integration of neural networks into the information system of the mining enterprise as well as the main components of this model, their connection and dependencies are determined. The architecture of the proposed information system is described, which consists of four zones: the corporate zone, the operational zone, the control zone, and the intermediate zone. It was hightnlined that the functioning of the operating system of this model depends on the sensors that are installed on the mining equipments in the operational area of the enterprise. It is noted that the number of such sensors depends on the amount of data accumulated because of the activity of the enterprise’s equipment and the efficiency of the construction and functioning of neural networks. The factors that determine the effectiveness of the model and the precision of neural networks in the activity of mining enterprises are substantiated. It was established that the main criterion is the amount of information needed to analyze the object’s behavior and the possibility of predicting it in the future. The dependence of the effectiveness of the application of AI technologies on the level of digitization of the enterprise was considered, and it was also proposed to determine the indicators of the accuracy and efficiency of the functioning of neural networks in the information systems of the enterprise.
Territorial distribution of germanium in the c5 coal seam on the territory of the “Pavlohradska” mine
Authors: Ishkov Valerii , Kozii Yevhen , Chernobuk Oleksandr , Dreshpak Oleksandr , Buketov Valentyn
Published: May 2024

The actual issues of the distribution of germanium in the c5 coal seam in the territory of the “Pavlohradska” mine of Western Donbas were studied. Three zones with high germanium content were found on the territory of the c5 seam, and their spatial location was determined. It was established that the geological structure of the c5 coal seam in places with the highest germanium content has common features: minimal thickness, the presence of one or two partings, as well as the presence of at least two low-amplitude northeast-trending disturbances, which can be used as predictive criteria for determining zones with the largest germanium content. The increased variability of the thickness of the coal seam, its structure, the presence of discontinuities, and the lithologicalfacies variability of the immediate and main roof contribute to the increase in the gradients of the germanium content. The growth of the regional component of germanium content in the north-eastern direction was established. It has been proven that both syngenetic and epigenetic factors influence the content of germanium in the coal seam. The regression equation between these parameters is calculated, which allows you to predict the germanium content without conducting new tests and analytical studies.