bluuebunny/crossref_metadata_2025 huggingface dataset:
Población afromexicana, esperanza de vida e indicadores de marginación en el contexto de la pandemia por COVID-19 en 2020
Authors: Uribe Salas Felipe Javier , Núñez Medina Gerardo
Published: October 2024

La población afomexicana ha sido escasamente estudiada desde una perspectiva cuantitativa en relación con eventos en salud. Por ello, la mayoría de los estudios en esa línea han sido de corte etnográfico. El Censo de Población y Vivienda de 2020 en México proporcionó, por primera vez a nivel censal, información demográfica sobre la población afromexicana identificada bajo el principio de autoadscripción. El presente trabajo tuvo por objeto analizar el impacto de la esperanza de vida (EV) en población afromexicana controlando su efecto por el grado de marginación y población sin derecho a servicios de salud, en el contexto de la pandemia por Covid-19 en México durante 2020. La información sobre población afromexicana, mortalidad y población, se obtuvieron de fuentes oficiales. Se calculó la EV mediante el método actuarial estándar. La población afromexicana representó una fracción pequeña respecto al total de la población en México. Las mayores proporciones se concentran en las costas de Oaxaca y Guerreo, y en menor proporción en Veracruz y Yucatán. Esta población tendió a distribuirse en municipios de baja densidad por lo que estuvo sujeta a las limitaciones socioeconómicas y demográficas de las poblaciones rurales o semiurbanas. Estas características se reflejaron en un bajo impacto en la pérdida en años de la EV porque la dinámica de la pandemia por Covid-19 tendió a ser menor en poblaciones de menor tamaño. Dicho efecto no se dio por tratarse de población afromexicana per se, sino porque ésta comparte las características de las poblaciones rurales y semiurbanas de México.
La evaluación de la investigación en República Dominicana: respectiva de los actores del sistema nacional de ciencia, tecnología e innovación
Authors: Riggio-Olivares Giovanna , Mencía-Ripley Aída , Rosario-Díaz Ramón I.
Published: October 2024

El Sistema Nacional de Indicadores de Ciencia y Tecnología de la República Dominicana se encuentra en una etapa avanzada de diseño y próximo a implementarse. Este sistema facilitará el monitoreo sistemático de distintas dimensiones del desempeño científico y tecnológico del país. En el marco del proyecto de investigación titulado «Estudio de línea base para la implementación del Sistema Nacional de Indicadores de Ciencia y Tecnología de la República Dominicana», se llevó a cabo un grupo focal con el propósito de evaluar las experiencias, percepciones y opiniones de diversos actores del ecosistema nacional de ciencia y tecnología sobre los indicadores cienciométricos y los procesos de evaluación de la investigación y la innovación. Los resultados ponen de relieve las valoraciones de gestores e investigadores acerca de los modelos, políticas y sistemas de evaluación vigentes, así como los métodos e instrumentos que utilizan en la práctica evaluativa. Este artículo presenta un análisis detallado de los resultados del grupo focal y sus implicaciones.
Enhancing Bucket Sort Efficiency: A Combinatorial Approach to Algorithm Optimization
Authors: Kalita Akash , Rajinikanth Aadhith
Published: October 2024

Abstract: The efficiency of sorting algorithms is critical to numerous computational processes, including data management, search operations, and real-time applications. Among these algorithms, Bucket Sort is notable for its linear-time performance when data is uniformly distributed over a defined range. However, its efficiency suffers significantly with non-uniform data distributions, resulting in unbalanced buckets and increased sorting time. In our research, we explore how combinatorial algorithms can enhance Bucket Sort’s efficiency by optimizing bucket partitioning, dynamic allocation, and internal sorting strategies. Through rigorous mathematical proofs and analysis, we demonstrate that the application of combinatorial techniques yields substantial improvements in average-case performance, particularly in handling skewed data distributions. Practical case studies in large-scale data processing illustrate the adaptability and effectiveness of these optimizations, supporting their potential in real-world applications.
PulseGuard: Health Monitoring and Analysis System
Authors: Bhawari Vishal , Chorey Sanica , Malviya Achal , Satpute Shreyash , Hatwar Shruti
Published: October 2024

Abstract: The use of wearable devices such as smart watches has led to a major change in the way a person is able to manage their health. In this paper, health monitoring system construction based on a smartwatch is designed which is capable of Health parameters like heartbeat monitoring, counting steps and their physical activity levels at continuous intervals. The system is built on modern web technologies and cloud services for data processing in a real-time manner, thus ensuring that alert messages are delivered immediately in case health parameters go beyond the normal ranges. The goal is to improve personal health management by providing expansion, dependability and availability to the users in areas where there is poor or no health care provision. The paper discusses system architecture, implementation, and the prospect of the system in enhancing preventive medicine and its practice for better health.
Site Suitability Analysis for Farmlands in Agro-Climatic Zone of Andhra Pradesh using Geo-Spatial Techniques
Authors: De Sukanya
Published: October 2024

Abstract: The Anantapur region has moderately healthy vegetation, which produces impressive biodiversity, climate variations, and a variety of wildlife and flora. As a result, the southern areashave a lot of room for agricultural growth to support rural economies. The Northern part's potential for agriculture in this region has been limited by several physical obstacles, including ahigh slope and elevation, built-up area, a lack of irrigation infrastructure, dry soil, poor rainfall, and socio-economic problems. Planning the expansion of agricultural output can benefit from researching a location's suitability for a particular purpose. Using a GIS-based multi-criteria decision-making technique based on DEM and Landsat 8 satellite data, AHP will be utilised to evaluate site suitability for agricultural production in unused areas. A pairwise comparison matrix will be used to set the weights. It will help to determine whether hilly terrain is suitable for farming using the study's techniques, approaches, and findings.
Received Power Problems in 3G and their Impact on Almadar Aljaded Network Performance
Authors: Abobaker Ali Abdullah W.
Published: October 2024

Abstract: In Libya, there are two types of mobile phone networks (Libyana and Almadar Aljaded), and with the development and passage of time, it has become necessary to keep pace with technology smoothly, and on the other hand, the number of network users is increasing, which causes problems that affect the performance of the networks. This study dealt with one of the networks, which is the Almadar Aljaded network for communications and the energy received in the third generation uplink, indicating its values and the factors affecting the studied network, with the development of an algorithm to address the problems that may arise, and this algorithm has proven its effectiveness in addressing three different cases.
The Role of Gut Microbioma in Human Health: Exploring the Impact on Metabolism, Immunity, and Neurological Disorders
Authors: Maurya Ayushi , Vidyameenakshi Sankarasubramanian , Masih Neerja
Published: October 2024

Abstract: The human microbiota has been progressively accepted for its role in sustaining overall health and well-being. The gut microflora vigorously communicates with the host metabolic system that exert influence on the progression, maturation, immune cells development and immune homeostasis maintenance. For the proper functioning of the immune system a diversified and steady gut microflora is needed, while “Dysbiosis” or an imbalance in the gut microbioma will lead to autoimmune and inflammatory diseases. The gut microbiota provides shape to our immune response and contribute to host protection against pathogen or bacterium through mechanisms such as the transformation of pro- inflammatory cytokine production, regulatory T-cell inductor and by intestinal mucosaql barrier. In addition to gut microbiota can affect our neurological function and play a key role in the pathogenesis of psychological disorders such as autism, depression, anxiety, Parkinson and Alzheimer’s disease. Gut microbiota can regulate neurological disorders by supplementing them with fecal transplantation, probiotics and antibiotics. An important parameter to consider gut microbioma disorder is Firmicutes/ Bacteroidetes.
Optimizing Kubernetes Environments: Best Practices for Configuring and Managing Admission Webhooks
Authors: Amrutham Naresh Kumar
Published: October 2024

Abstract: Kubernetes has emerged as the leading platform for container orchestration, offering a robust framework for automating the deployment, scaling, and management of containerized applications. As its adoption increases, managing diverse workloads across various environments becomes increasingly complex, necessitating mechanisms for policy enforcement, compliance assurance, and dynamic configuration management. In Kubernetes, admission webhooks provide a means to intercept requests, enabling the mutation and validation of these requests to enforce custom policies. This paper presents comprehensive guidelines for configuring and operating admission webhooks to enhance security, consistency, and operational efficiency in Kubernetes environments. Through this paper, readers will gain hands-on experience in implementing best practices, thereby optimizing the use of admission webhooks to effectively maintain organizational policies and standards.
A Comparative Study on Seismic Behaviour of Plan Irregular Buildings
Authors: J Ravi Tej M , G Chidananda
Published: October 2024

Abstract: Asymmetrical plan irregularities occur when the horizontal layout of a building is non uniform or unsymmetrical in one or more axes. These irregularities may arise from variations in building shape, size, or configuration, leading to nonuniform distribution of mass, stiffness, or load paths throughout the structure. Considering equivalent static analysis (ESA) and response spectrum analysis (RSA) as per IS 1893-Part 1 (2016) considering seismic zones III, structure with square shaped plan performs better than the other shaped models (viz. T, L, H and Plus shapes) with least values of storey displacement and storey drift ratio, and also with higher value of storey stiffness. Thus, square plan shaped structure is seismically more resistant than T, L, H and Plus shaped structures.
Trends Affecting CRM Processes of Large Industry Companies
Authors: Gess Christian
Published: October 2024

Abstract: Business processes in industrial companies are subject to constant change, which is why especially those companies must try to stay up to date in order to counteract the negative effects of these changes. The aim of this study was to research which developments, influencing factors and trends affect the Customer Relationship Management business processes of large industrial companies. With the help of a qualitatively oriented systematic literature research of practical studies 13 important influences were identified. The result shows that a strong customer centricity is developing in industrial companies, which will change future business processes and IT-supported business systems today and in the future. This study can serve as a starting point for further research in industrial companies that plan to modify or transform business processes.
Transforming Lignocellulosic Biomass into Biofuels: Recent Innovations in Pretreatment and Bioconversion Techniques
Authors: Rashmi  , Tripathi Tripti , Pandey Sanjit , Kumar Shravan
Published: October 2024

Abstract: This scholarly review investigates contemporary advancements in the conversion of lignocellulosic biomass to biofuels, emphasizing innovative pretreatment and bioconversion technologies that aim to surmount the intrinsic challenges associated with the processing of this complex biomass. Lignocellulosic materials, which are predominantly comprised of cellulose, hemicellulose, and lignin, represent a renewable and plentiful source for biofuel production; however, their structural complexity necessitates sophisticated methodologies for the effective degradation of resistant components. The review scrutinizes a variety of pretreatment methodologies, encompassing physical, chemical, and burgeoning techniques such as plasma-assisted processing, which are engineered to augment cellulose accessibility for enzymatic hydrolysis. Additionally, it elucidates the progress made in bioconversion processes, concentrating on enzymatic hydrolysis, microbial fermentation, and consolidated bioprocessing (CBP), wherein recent endeavors in genetic engineering are refining microbial strains to enhance yield and efficiency. By addressing economic, technological, and environmental challenges, this article emphasizes the role of integrated biorefineries and innovative biotechnologies in facilitating scalable and cost-effective production of lignocellulosic biofuels. Prospective research trajectories include the formulation of sustainable pretreatment techniques and the advancement of synthetic biology to fully harness the potential of lignocellulosic biomass as a renewable energy resource. Ultimately, this review accentuates the significance of lignocellulosic biofuels as a feasible alternative to fossil fuels, thereby contributing to energy sustainability and climate change mitigation through diminished carbon emissions
Case Study on Behavior of a Masonry Buildings Under Seismic Loading October 2023 Earthquake in Nepal
Authors: Soni Kapil Shankar
Published: October 2024

Abstract: This paper assesses the behavior of the corners of unreinforced masonry walls during a magnitude 5.3 earthquake that struck western Nepal on October 3 at 14:40 local time. A strong aftershock with a 6.3 Richter scale occurred immediately after the main shock at 15:06, followed by a second aftershock of 5.1 Richter scale. The epicenter of the quake was located in Bajhang district, with tremors felt in neighboring districts (Doti, Achham, Bajura, Dadeldhura, Baitadi, and Darchula), as well as in Kathmandu. According to the National Society of the Red Cross, 334 houses have been fully damaged, and 1,185 have been partially damaged. The assessment is still ongoing in the affected areas, with displaced people staying in schools or with neighbors. The response is slow due to access constraints, requiring one to two days of walking to reach the affected communities. The majority of the buildings in the affected region are constructed with masonry, most of which were formed with random or coursed stone and mud brick walls without any reinforcement. Many of these buildings were damaged or had collapsed. The cracking and failure patterns of the buildings are examined and interpreted according to current provisions for earthquake resistance of masonry structures. The damages are attributed to several factors, such as poor construction quality and workmanship. This study aims to contribute to the body of knowledge necessary for improving earthquake resilience in Nepal and similar regions around the world
Spor ve Beden Kültürü Mekanlarıyla Antikçağ Pergamon’u
Authors: Korkmaz Sevda
Published: October 2024

Roma döneminin sayılı antik kentlerinden biri olan Pergamon, sadece kütüphanesi ve parşömeni ile değil stadium, gymnasium, asklepion, hamam gibi yapıları ile de öne çıkar. Gerek zihin gerekse beden eğitimine önem verilen Yunan düşüncesinin yapı taşları olan bu merkezler, bugünün batı medeniyetinin altyapısını oluşturmaktadır. Antikçağ Anadolu’sunun en parlak şehirlerinden Pergamon’da dönemin diğer antik kentleri ile karşılaştırıldığında hayli fazla olan bu yapıların varlığı ve sayısı, spor tarihi açısından önemli soruları ve ipuçlarını da taşımaktadır. Neden Pergamon’da bu kadar çok stadyum ve gymnasium vardı, bunların kullanım amaçları ve sıklıkları neydi, stadyumlara olan talebin boyutları nasıldı, asklepiona neden ihtiyaç duyulduğu, sporcu tedavilerinin nasıl yapıldığı, gymnasion yapısının ne gibi işlevleri yerine getirdiği, hamam yapısının nasıl eklemlendiği gibi bir dizi soru, araştırmacıları kentin antik çağ spor yaşamını sorgulamaya yöneltir. Bu araştırmada antikçağda Pergamon şehrindeki beden kültürü ve spor amaçlı yapılar, bu yapılardaki pratikler incelenmiştir.
IMPROVING THE DURABILITY OF BEARING ASSEMBLIES BY IMPROVING THE LUBRICATING MEDIUM
Authors:   Verkhnevolzhsk State University of Agronomy and Biothechnlogy, Ivanovo, Russian Federation, GVOZDEV A.A. , KOMAROVA T.A. ,   Ivanovo State Polytechnic University, Ivanovo, Russian Federation, LYALYAKIN V.P. ,   Federal Scientific Agroengineering Center VIM, Moscow, Russian Federation, MARDASOV А.S. ,   Verkhnevolzhsk State University of Agronomy and Biothechnlogy, Ivanovo, Russian Federation
Published: October 2024

We considered the issue of increasing the operational life of ball and roller bearings. Having studied the known tribomaterials to increase the resource of worn friction joints in terms of efficiency, environmental friendliness, low cost, ease of preparation and application, it was found that the introduction of friction surface geomodifiers from a mixture of serpentines, highly dispersed powders of layered hydrosilicates Mg, Al, Ni, Fe into their oils and lubricants, provides a sufficiently effective increase in the life of rolling bearings during maintenance machine and tractor park in the agro-industrial complex. (Research purpose) The research purpose is identifying the least abrasive geomodifier powder from five samples of different deposits and its optimal concentration in Litol-24 grease. (Materials and methods) Conducted standard tests of the roller-by-roller tribocouple for abrasive wear spots of bearing rollers. They were injected into Litol-24 grease in the same concentration. An assessment of the abrasiveness of powders by excision of wear spots was carried out visually and with photography on microscopes. Tribo-tests were performed with the least abrasive powder at a powder concentration in the range of 0.5-3.0 percent. The optimal concentration of the powder was revealed by the size of the wear spot areas, friction moments, and temperatures in the contact of the rollers. (Results and discussion) It was found that the least abrasive powder was N4. When its concentration in the lubricant was up to 0.5 percent, the tribological indicators corresponded to the base lubricant, with an increase in concentration to 1.0 percent, the friction moment and the wear spot decreased while maintaining the temperature in contact. With an increase in concentration to 1.5 percent, mechanical losses increased with a slight increase in wear, at concentrations of 2.5-3.0 percent, the temperature increased from 111 to 133.4 degrees Celsius, which negatively affects bearings and lubrication. (Conclusions) It was found that the optimal concentration of powder N4 in Litol-24 grease should be 1.0-1.5 percent.
DEVELOPMENT OF HIGHER AGRICULTURAL EDUCATION IN THE SOUTHERN URALS IN THE PERIOD FROM 1920 TO 2020
Authors:   Chelyabinsk State Industrial and Humanitarian College named after A.V. Yakovlev, Chelyabinsk, Russian Federation, GODLEVSKAYA E.V.
Published: October 2024

The paper examines the formation of agricultural higher educational institutions of the Southern Urals from 1920 to the 2020 years. The dynamics of development of the Chelyabinsk Institute of Mechanization and Electrification of Agriculture, Orenburg Agricultural Institute, Bashkir Agricultural Institute is shown. The specialization of institutes in the following areas is presented: agronomy, animal science, agroengineering. The features of the formation of scientific directions and schools in agricultural universities of the region are described. The role of scientific schools of agricultural institutes in solving national economic problems is revealed. (Research purpose) The research pupose is systematization of historical materials in the field of formation and development of agricultural education in the Southern Urals (using the example of higher educational institutions). (Materials and methods) Used documents and other sources during the analysis of the development of higher agricultural education in the Southern Urals, contributing to the disclosure of the material during the study period. (Results and discussion) Author reviewed the areas of work of problem laboratories, experimental bases (sites), farms, and showed their role in improving the quality of education in agricultural universities in the region. (Conclusions) In the history of the formation and development of higher agricultural education in the Southern Urals, the following stages can be traced: 1930-1945 is the period associated with the quantitative processes of meeting the needs of agriculture in the region with highly qualified personnel; 1946-1960 is the period of growth in the quality of training graduates of agricultural higher educational institutions in the region; 1960-1980 is the period of development of new narrower areas of agricultural specialties; 1980-2000 is the period ofintegration of higher education, science and production. The growth of university science is noted. The qualification of scientific and pedagogical staff of agricultural universities is growing due to the well-organized work of the advanced training system; 2000-2020 is the period of building a new model of agricultural education associated with changes in the agricultural sector: digital transformation and growing robotization.
PROCESS OF SUBMERSIBLE CLEANING OF METAL SURFACES OF MACHINE PARTS
Authors:   ussian State Agrarian University - Moscow State Agricultural Academy named after K.A. Timiryazev, Moscow, Russian Federation, KORNEEV V.M. , KATAEV YU.V. ,   Federal Scientific Agroengineering Center VIM, Moscow, Russian Federation, KORNEEV N.V. ,   Federal Scientific Agroengineering Center VIM, Moscow, Russian Federation
Published: October 2024

During the operation of agricultural machinery, contamination of various types and properties is deposited on the metal surfaces of parts, which can lead to increased wear of parts and a decrease in the operational reliability of machines as a whole. (Research purpose) The research purpose is studying the influence of the mechanical action of the cleaning solution on the efficiency of removing contaminations from the metal surfaces of machine parts. (Materials and methods) It was determined that the efficiency and quality of cleaning can be improved by increasing the intensity of the mechanical action of the washing liquid flow on the contamination of parts of agricultural machinery and equipment. We have obtained a mathematical inequality describing the condition under which the contamination is destroyed and removed from the surface. (Results and discussion) It has been shown that mixing of the cleaning solution, the creation of mechanical vibrations of the parts to be cleaned and their movement, the creation of cavitation phenomena in the flow of the cleaning solution, where acoustic currents play an important role, which form vortex hydrodynamic flows that facilitate the dissolution and movement of components in a liquid medium, are used as mechanical effects when cleaning metal surfaces of parts and assemblies of agricultural machinery. It was found that the criteria for cleaning efficiency are the hydromechanical action of the washing liquid on the surface to be cleaned and the energy intensity of the intensifying submersible cleaning. (Conclusions) The cleaning efficiency is determined by the physical and chemical properties of detergents, the flow rate of the cleaning solution, heating and softening of contaminants under high accelerations, the temperature of the cleaning solution, the concentration of detergent in water, the exposure of the solution to the surface to be cleaned.
ORGANIZATION OF REPAIR AND RESTORATION TECHNOLOGIES OF MACHINE PARTS IN THE AGRO-INDUSTRIAL COMPLEX
Authors:   Russian Research Institute of Information, Technical and Economic Research on Engineering and Technical Support of the Agro-Industrial Complex, w. s. Pravdinsky, Moscow region, Russian Federation, KUZMIN V.N.
Published: October 2024

The volume of agricultural products depends on the technical readiness of equipment, repair and maintenance facilities. The emergence of new technologies can change the very process of organizing repairs. (Research purpose) The research purpose is analyzing in historical perspective the mutual relationship of the fleet of machines, the organization and technology of repair and restoration of parts of agricultural machinery. (Materials and methods) Used statistical data, scientific papers of researchers, authors' own observations. We applied the general scientific method, analysis, generalization, synthesis, etc. (Results and discussion) The paper notes the presence during the planned economy of a large fleet of the same type of machines in agriculture, which required constant repair impacts, contributed to the creation of an appropriate repair and maintenance base. It was pointed out that in 1986 184 repair plants were built, 2106 district repair and technical enterprises, including 818 specialized and 1288 general purpose workshops, technical exchange offices, repair shops for worn parts, etc.). The possibility of directive instructions was provided by the mass collection of the same type of parts, which made it possible to apply appropriate technologies on production-mechanized lines, reduce the cost of restoring parts: the organization of repair determined the technology. It has been shown that in a market economy, the equipment nomenclature has decreased, the number of brands has increased, repairs have moved from specialized to agricultural organizations and are mainly reduced to replacing worn-out parts with new ones. At the same time, additive technologies have appeared that do not require reconfiguration of equipment when changing the nomenclature of recoverable parts. (Conclusions) Additive technologies can transform sectoral repairs into intersectoral repairs, which will increase equipment utilization and improve economic performance.
TRIBOTECHNICAL CHARACTERISTICS OF LITOL-24 LUBRICANT WITH ADDITIVES OF FRICTION GEOMODIFIERS AND GRAPHENE
Authors:   Verkhnevolzhsk State University of Agronomy and Biothechnlogy, Ivanovo, Russian Federation, GVOZDEV A.A. , KOMAROVA T.A. ,   Ivanovo State Polytechnic University, Ivanovo, Russian Federation, FEDOTOV A.V. ,   Federal Scientific Agroengineering Center VIM, Moscow, Russian Federation, MARDASOV А.S. ,   Verkhnevolzhsk State University of Agronomy and Biothechnlogy, Ivanovo, Russian Federation
Published: October 2024

In the technical service of machines and equipment, additives to lubricants are used that reduce the coefficient of friction and wear, and extend the life of tribocouplings. The article examined the tribological characteristics of the Litol-24 grease with additives of a friction geomodifier and graphene. (Research purpose)To evaluate the prospects for using a friction geomodifier and graphene in the commercially produced lubricant “Litol-24”. (Materials and methods) Litol-24 grease, manufactured in accordance with the state standard, was used as the base lubricant. Penetration and dropping point were determined using standard methods. Laboratory tests for wear resistance were carried out on a friction machine 2070. Bench tests - on a specially designed pilot plant, on serial rolling bearings. During the tests, the bearing temperature, noise level, friction torque, and radial clearance were monitored. (Results and discussion) Experimental studies have shown that the combined introduction of a friction geomodifier and graphene in an amount of 0.2 percent leads to a greater reduction in wear (by 9.7 percent) and temperature (by 19.3 percent), and the friction moment in the contact zone in comparison with only one geomodifier. The study established that the dropping temperature remained constant with increasing concentration of fillers. When controlling mechanical losses with an experimental connection, a reduction in the friction moment of bearings by 11.1-12.5 percent was achieved. (Conclusions) The introduction of a friction geomodifier and graphene into the Litol-24 grease makes it possible to reduce wear, the coefficient of friction, the temperature in the mating zone of parts, operating costs and increase the durability of the bearing.
EVOLUTION OF TECHNICAL SERVICE IN THE AGRICULTURAL INDUSTRIAL COMPLEX
Authors:   Federal Scientific Agroengineering Center VIM, Moscow Russian Federation, KATAEV YU.V. , GERASIMOV V.S. ,   Federal Scientific Agroengineering Center VIM, Moscow Russian Federation, TISHANINOV I.A. ,   Federal Scientific Agroengineering Center VIM, Moscow Russian Federation, KAZAKOVA V.A. ,   Federal Scientific Agroengineering Center VIM, Moscow Russian Federation
Published: October 2024

In the agro-industrial complex, the transition to a market economy has significantly affected the structure of the engineering service, which has not been reorganized taking into account the modern technical way of life. (Research purpose) The research purpose is determining the main stages of the transition period of the engineering service of the agro-industrial complex, reflecting the real possibilities of its revival based on the use of intelligent technologies. (Materials and methods) Conducted an in-depth analysis of changes in the engineering service of the agro-industrial complex over the past 25-30 years, reflecting the system of maintaining a high level of efficiency of agricultural machinery, the introduction of intelligent technologies in the technical support of machinery, the modernization of the system of providing engineering and technical services to agricultural producers. (Results and discussion) Showed the need to restore the basic parameters of an effective engineering service of the agro-industrial complex. We have determined the feasibility of ensuring a high level of efficiency of the machine and tractor fleet by optimizing the technical service on market conditions of voluntary and mutually beneficial for the owners of the equipment and the service provider. The need for the formation of a new ideology for the development of technical services in the agro-industrial complex related to the introduction of innovative technologies in agriculture based on highly efficient agricultural machinery using electronic means of monitoring and managing the technical condition of machines based on digital technologies has been identified. (Conclusions) The analysis of the state of technical service in the agro-industrial complex over the past 25-30 years makes it possible to substantiate the need to modernize the engineering service with the maximum use of intensive and intelligent technologies in order to implement the food program of the Russian Federation. Import substitution of agricultural machinery and all components related to its technical support is one of the main tasks, the solution of which largely depends on the successful modernization of the engineering service of the agro-industrial complex as part of the creation of domestic technological equipment and technologies.
DECREASE IN CORROSION RESISTANCE OF MACHINE PARTS AND EQUIPMENT IN THE AGRICULTURAL PROCESSING INDUSTRIES
Authors:   Bashkir State Agrarian University, Ufa, Republic of Bashkortostan, Russian Federation, FARKHSHATOV M.N.
Published: October 2024

The fast-wearing parts of machinery and equipment of the processing branch of the agro-industrial complex are made of corrosion-resistant steels of various classes. There are many ways to restore them, but the most optimal way is electrocontact welding of corrosion-resistant steels of the appropriate class. This method has a number of advantages over other recovery methods, however, the effect of electrocontact welding of the tape on the corrosion resistance of the coating has not been practically studied. (Research purpose) The research purpose is theoretically substantiating the possible reasons for the decrease of corrosion resistance of coatings obtained by electrocontact welding of tape from corrosion-resistant steels, and experimentally proving the hypotheses presented. (Materials and methods) Were used as materials for the study of 0.5 mm thick tapes made of corrosion-resistant steels 12X18N10T, 20X13, 12X17, 15X28, 12X13. Tests were carried out for the formation of intercrystalline corrosion under various types of thermal influence according to the AM method (GOST 6032-2017). (Results and discussion) Laboratory tests have shown that welded tapes made of austenitic steels (12X18H10T) are not prone to the intercrystalline corrosion due to the presence of titanium in the tape and the austenization temperature of 1100-1200 degrees Celsius. In ferritic steels at a temperature of 1000 degrees Celsius in the welding zone, intercrystalline corrosion does not form according to the theory, but reheating (tempering zone) provokes its formation. The same pattern is observed with martensite steels (for example, 20X13). (Conclusions) The theory was confirmed that during electrocontact welding of tapes made of corrosion-resistant steels of martensit (20X13), martensit-ferritic (12X13), ferritic (12X17) steels are subjected to intercrystalline corrosion, with the exception of austenitic steels (type 18-10). It is recommended to take into account the results obtained to restore machine parts and equipment of the processing branches of the agro-industrial complex by electrocontact welding of the tape.
ENGINEERING AND TECHNICAL SUPPORT OF THE AGRO-INDUSTRIAL COMPLEX IN HENAN PROVINCE OF THE PEOPLE'S REPUBLIC OF CHINA
Authors:   Rostov State Transport University, Rostov-on-Don, Russian Federation, NIKITCHENKO S.L. ,   Don State Technical University, IGNATIEVA O.V. ,   Rostov State Transport University, Rostov-on-Don, Russian Federation, LYASHCHENKO A.M. ,   Rostov State Transport University, Rostov-on-Don, Russian Federation
Published: October 2024

For the successful conduct of agricultural production, a modern system of its engineering and technical support is needed, performing the material equipping of farms with machines, operational materials, providing high-quality technical service, promoting innovations and providing personnel and information support for production. Similar systems in agriculture in developed countries and Russia have a similar structure and set of functions, and their management mechanism is based on market principles and free relationships with business entities. (Research purpose) The research purpose is analyzing the features of the organization of agricultural production and the system of its engineering and technical support in Henan province, identifying the main differences between the analyzed system and foreign analogues, showing the results of its activities and development prospects. (Materials and methods) Applied analytical and excursion methods, used materials from specialized papers, Internet sites and observations during the excursion and visiting the exhibition. (Results and discussion) It was noted that agriculture in Henan is the basic industry, leading in terms of wheat and rice production in the country. In the region, the current level of mechanization of crop production processes does not exceed 72 percent. It was determined that Chinese specialists are solving innovative tasks to further increase the level of mechanization, automation and intellectualization of production, as well as to reach the world's leading positions in the field of "smart agriculture" after 2035. They showed the organization of engineering and technical support for agricultural production in the province on the basis of territorial agricultural clusters, current achievements in the field of unmanned agricultural machinery. (Conclusions) The economic effect of the organization of the engineering and technical support system is to increase the level of mechanization, in the mass distribution of process automation systems, in the introduction of serial samples of unmanned agricultural machinery.
INCREASING THE WEAR RESISTANCE OF HOLES BY ELECTROMECHANICAL TREATMENT
Authors:   Moscow State Technical University named after N.E. Bauman, Moscow, Russian Federation, FEDOROVA L.V. , MOROZOV A.V. ,   Ulyanovsk State Agrarian University named after P.A. Stolypin, Ulyanovsk, Russian Federation, FEDOROV S.K. ,   Moscow State Technical University named after N.E. Bauman, Moscow, Russian Federation
Published: October 2024

The results of research in the field of improving the reliability of machinery in the manufacture and restoration of holes of critical parts using surfacing methods, machining by cutting and hardening by electromechanical processing are presented. (Research purpose) The research purpose is improving the quality of repair of body parts by increasing the wear resistance of coaxial holes by electromechanical processing. (Materials and methods) Cylindrical samples made of steel 35 were identified as the object of research after they were surfaced with Np-40G wire and hardened by electromechanical processing. (Results and discussion) It was noted that machine manufacturers do not always provide high quality connections, and first of all by the physical and mechanical properties of the most loaded surfaces of parts. Based on the technical and economic analysis, the choice of surfacing materials was justified in relation to the restoration of coaxial holes of excavator boom. One of the promising methods of operational solution of the problem is the use of electric arc surfacing, mechanical processing by cutting and finishing electromechanical processing. This method allows you to restore the geometric parameters of the holes, increase the hardness and increase the wear resistance of parts. It was established experimentally that after electromechanical processing, the hardness of the deposited metal Np-40G increases from 22-25 to 54-56 on the Rockwell hardness scale. Depending on the modes of electromechanical processing, the depth of the hardened zone can vary from 0.3 to 1.8 millimetres. (Conclusions) On the basis of the conducted research, it was revealed that using the equipment and technology of electromechanical processing, it is possible to make high-quality bushings on a lathe-screw-cutting machine or its use at the final stage of restoration of coaxial holes of the excavator boom by surfacing methods as part of a surfacing and boring complex.
HARDENING OF CYLINDRICAL PARTS OF TRACTORS AND AGRICULTURAL MACHINES
Authors:   Udmurt Federal Research Center of Ural Branch of the Russian Academy of Sciences, Izhevsk, Republic of Udmurtia, Russian Federation, VOLKOV K.G. , DEMENTYEV V.B. ,   Udmurt Federal Research Center of Ural Branch of the Russian Academy of Sciences, Izhevsk, Republic of Udmurtia, Russian Federation
Published: October 2024

The structures of tractors, automobiles, combine harvesters and other agricultural machines contain a large number of solid and hollow cylindrical parts without complex structural elements, for example, the swing axis 52-2301058 of the front axle of a wheeled tractor. The actual resource of these parts often does not correspond to that declared by the manufacturer. (Research purpose) The research purpose is increasing the service life of the swing axis 52-2301058 by developing a manufacturing process using high-temperature thermomechanical processing with screw compression. (Materials and methods) Used rolled steel 45 for the manufacture of hardened swing axes 52-2301058. The rolled products were cut on a band saw, then the blanks were subjected to high-temperature thermomechanical treatment with screw compression. Induction tempering of machining zones and further machining were performed on a lathe and vertical milling machines. Mechanical characteristics were studied by tensile testing of samples; hardness was determined by the Rockwell method. (Results and discussion) We have developed a route technological process consisting of seven operations. The samples manufactured according to this technological process were subjected to tensile tests and hardness determination. According to the research results, the hardness of the samples is in the range of 48-52 on the Rockwell scale, while there is an increase in tensile strength and conditional yield strength by 30 percent, relative elongation and relative contraction by two times compared with conventional quenching in water and tempering at a temperature of 300-400 degrees Celsius. (Conclusions) The developed technological process made it possible to increase the life of the swing axis 52-2301058 three times, which corresponds to 10,000 operating hours.
RESTORATIVE SURFACING AND ELECTROMECHANICAL SURFACE HARDENING OF DRILL PIPE LOCKS
Authors:   Bauman Moscow State Technical University, Moscow, Russian Federation, IVANOVA YU.S. , CHEPURINA E.L. ,   Russian State Agrarian University - K.A. Timiryazev Moscow Agricultural Academy, Moscow, Russian Federation, FOMINA L.P. ,   Production complex "Salyut" JSC "United Engine Corporation,", Moscow, Russian Federation
Published: October 2024

The main reason for the wear of the drill pipe locks when rotating in an open borehole is the presence of a solid layer in aggressive geological formations. (Research purpose) The research purpose is increasing the physical and mechanical properties of the surface layer by researching and developing a technology for hardening the outer surfaces of drill pipe locks restored by electromechanical surface hardening. (Materials and methods) Surfacing was performed on the coupling parts of drill pipes with thread Z-147 in the strength group G105. They were fused with a powder wire of various chemical composition back-to-back with three belts on each sample. Wear tests of surfacing were carried out on a test bench using a special technique (resistance to abrasive wear). The chemical composition of the surfacing indicates a carbon content in the surface layer of 0.28 to 0.40 percent. Methods of restoration of locks by surfacing were examined and the physical and mechanical properties of the surface layer of the restored drill pipes were evaluated, the microstructural state of the base and deposited metal was analyzed. (Results and discussion) It was noted that despite the large number of technologies for surfacing drill pipe locks, the special equipment used, the high labor intensity and cost of surfacing processes and subsequent turning on pipe-cutting machines, it is not possible to increase their wear resistance. This is due to the insufficient hardness of the surface layer of the deposited locks (no more than 28-32 on the Rockwell scale), which does not exceed the surface hardness of the new drill pipe. An experimental increase in the hardness of the surface layer of the deposited samples after electromechanical surface hardening was confirmed. (Conclusions) The results of wear tests of deposited materials indicate the effectiveness of electromechanical surface hardening of reducing surfacing.
PROCESSING THE HOLE OF THE SUPPORT ROLLER FOR TRACTOR SUSPENSION SYSTEM BY STITCHING
Authors:   Irkutsk state agrarian university named after A.A. Ezhevsky, p. Molodezhny, Irkutsk region, Russian Federation, BURAEVA G.M. , SHISTEEV A.V. ,   Irkutsk state agrarian university named after A.A. Ezhevsky, p. Molodezhny, Irkutsk region, Russian Federation, BURAEV M.K. ,   Irkutsk state agrarian university named after A.A. Ezhevsky, p. Molodezhny, Irkutsk region, Russian Federation
Published: October 2024

Restoring the surface of the roller treadmill to its nominal value using automatic surfacing technology makes it possible to obtain a significant surfacing layer with a sufficient degree of strength and wear resistance. At the same time, as a result of thermal action, the metal of the roller receives a linear shrinkage, due to which the diameter of the hole for the bearing of the roller axis decreases. In this case, it becomes impossible to install the outer bearing cage. (Research purpose) The research purpose is substantiating the method of processing the seat under the outer bearing cage after surfacing the treadmills of the support roller. (Materials and methods) It was noted that the surfaces of the treadmills of the support rollers wear out quickly as a result of abrasive friction with the track link and the soil. It was clarified that when surfacing in all ways, metal shrinkage occurs and the diameter of the hole for the outer bearing cage decreases. (Results and discussion) It was found that the wear of the treadmills of the support rollers averaged 13.9 millimeters. Restoration of the treadmill surface of the roller to the nominal value, carried out by the method of multilayer automatic surfacing, caused a decrease in the diameter of the roller opening by an average of 0.73 millimeters. We chose from the considered options for calibrating the hole the most preferable from and time-saving one, the firmware processing method. (Conclusions) The appearance of shrinkage of the support roller hole during restoration by automatic surfacing and the method of calibrating the hole using firmware were substantiated. The method provides tension in the coupling of the outer ring of the bearing with the roller within 0.015-0.039 millimeters and surface cleanliness within Ra 1.25-0.63 micrometers. The firmware is simple in design and can be manufactured in a repair shop.
APPLICATION OF POWER COMPOSITE STRUCTURES FOR AGRICULTURAL MACHINERY
Authors:   Kaluga Branch of Bauman Moscow State Technical University, Kaluga, Russian Federation, ASTAKHOV M.V. , SLAVKINA E.V. ,   Kaluga Branch of Bauman Moscow State Technical University, Kaluga, Russian Federation, VITCHUK N.A. ,   Kaluga State University named after K.E. Tsiolkovsky, Kaluga, Russian Federation
Published: October 2024

The equipment involved in the agro-industrial complex is subject to active wear and corrosion. The modern solution is to replace the body steel elements with composite ones, but they have not become widespread due to some conservatism of the industry. (Research Purpose) The research purpose is substantiating the effectiveness of the use of polymer composite materials for power body elements of agricultural transporting machines. (Materials and methods) It was noted that the replacement of traditional steel products with composite ones makes it possible to achieve a significant reduction in the mass of products while increasing their reliability, increasing the resource due to the absence of corrosion destruction and minimizing the cost of conservation and storage. (Results and discussion) A comparative analysis was performed using the example of a trailer of an agricultural vehicle, all-metal and composite versions of the side design were considered. The presented options were substantiated on the basis of a qualimetric assessment by an expert method according to the criteria: cost, prospects, material consumption, environmental friendliness, maintainability, corrosion and wear resistance. Analysis of the calculation result showed that the experts preferred the composite version compared to the traditionally used steel sides. An accumulation histogram was constructed according to the data obtained, showing the significance of the final assessment for each criterion (Conclusions) Proved the feasibility of introducing power body elements based on polymer composite materials for machines of the agro-industrial complex. A design based on polymer composite materials of the side of an agricultural trailer in the form of a five-layer rectangular plate of sandwich-structured type capable of withstanding loads arising during operation has been proposed. The use of this design will significantly reduce the mass while increasing corrosion resistance and reliability, which will reduce the cost of repair, maintenance and consumption of fuel and lubricants.