bluuebunny/crossref_metadata_2025 huggingface dataset:
Market integration and rice price transmission in Indonesia
Authors: Shaffitri Lidya R. , Suryana Esty A. , Sinuraya Julia F.
Published: July 2024

Rice is a strategic commodity in Indonesia. Prices at the producer level fluctuate relatively due to shifts in supply and demand. These fluctuations make government intervention in stabilising rice prices important, mainly if market integration exists. This study aims to analyse market integration and rice price transmission. The Vector Error Correction Model (VECM) and descriptive analysis methods were used. The results show rice market integration in both the long and short term. Long-term integration occurs in the relationship between prices at the producer and consumer levels. Long-term integration also occurs in the connection between wholesale and retail costs. The VECM model shows that short-term price transmission occurs when consumer and producer prices in this month are significantly impacted by changes in producer prices from the previous month. However, changes at the consumer level do not affect prices at the producer level. Thus, price stabilisation efforts must be made at the producer level. This is especially necessary when grain supply disruptions cause price fluctuations due to weather factors and plant pest attacks in certain months, which cause grain prices to spike.
The development of food logistics system to support food security and rice price stabilisation: A case study of Banten Province
Authors: Mailena Lira , Suryani Erma , Astari Annisa F. , Perdana Resty P. , Sumedi  , Gunawan  , Irawan Elvira J. , Adelya Martha
Published: July 2024

The disruption of the global rice trade caused by climate change, the COVID-19 pandemic, and geopolitical tensions has the potential to harm food security and the stability of domestic rice prices. The main weakness of the current logistics system lies in the accuracy of demand and supply data, as well as the poor condition of the logistics infrastructure, which limits the government’s ability to take immediate action to reduce price fluctuations that occur over a very fast period. This study aims to analyse the existing condition of the rice logistics system in Banten Province by using quantitative descriptive analysis. The results of the study show the high intensity of domestic rice trade and inter-regional dependence; thus, it is important to initiate the improvement of the logistics system in Banten Province. However, data collector institutions found difficulties in obtaining and recording data along the chain. Therefore, it is recommended to a) improve the data monitoring instruments for rice demand and supply and the understanding of these improved instruments, b) increase production capacity, c) strengthen the regional ability to intervene in the market, d) develop infrastructure that supports smooth and efficient distribution, and e) establish inter-regional cooperation to enhance rice logistics systems.
The impact of the Vietnam Sustainable Agriculture Transformation (VnSAT) program on the performance of Indonesian rice
Authors: Hariyati Yuli , Cahyono Ahmad R. , Prayuginingsih Henik , Muhtadi Kamil
Published: July 2024

The price of rice in the world market greatly influences prices in the domestic market, one of which is the price of rice in Vietnam, Indonesia’s largest rice exporter. The increase in rice prices in Vietnam under the Vietnam Sustainable Agriculture Transformation (VnSAT) program affected the performance of Indonesian rice. This research aims to determine the impact of the VnSAT program on the Indonesian rice version. Data analysis uses simultaneous equations with the two-stage least squares (2SLS) estimation method. The research results show that the effects of the VnSAT program, through an increase in Vietnamese rice prices by 20% and 29%, are relatively small on the performance of Indonesian rice, causing domestic rice prices to decrease by 0.0015% and 0.0030%, rice supply to decrease by 0.0006% and 0.0008%, and demand for rice to increase by 0.000029% and 0.000041%. This implies that external policies from Vietnam did not influence the performance of Indonesian rice, as Indonesia is Indonesia’s largest rice exporter, so Indonesia does not need to worry if there is an increase in rice prices in Vietnam.
Understanding the price perception: Assessing youth willingness to pay for organic rice in Indonesia
Authors: Nurohman Muhammad F. , Herawati  , Krisnamurthi Bayu
Published: July 2024

A critical step towards attaining sustainable agricultural development is the production of organic crops. The upstream sector’s support is crucial to the success of organic farming. Due to their understanding of sustainable food methods, the younger generation has the potential to lead the rise of organic agriculture. This study intends to examine young people’s perceptions, preferences, and willingness to pay for organic rice. The research uses original information gathered from 161 young respondents in Indonesia. The Discrete Choice Experiment (DCE) methodology and descriptive analysis are used. According to the study, despite having favourable impressions of organic rice and the ability to purchase it, the younger generation’s willingness to pay for it is still less than the average cost of organic rice. Compared to conventional rice, the younger generation is prepared to pay an extra IDR 10,776.83 for organic rice. Promoting organic rice with enticing health benefits, certifications, and environmental friendliness compared to conventional rice should be the main goal to increase youth preference for organic rice. Furthermore, decisions about the production of organic rice and the formulation of pricing policies should take into account the young generation’s willingness to pay for it.
Increasing utilisation of government-assisted agricultural machinery for rice planting areas
Authors: Ulpah Amalia , Setiyanto Adi , Astari Annisa F. , Sinuraya Julia F. , Azis Miftahul
Published: July 2024

From 2015 to 2019, the Ministry of Agriculture distributed massive machinery assistance with one of the aims was to increase the planting area. However, several studies have shown that the usefulness of government-assisted agricultural machinery is not optimal. This study analyses the utilisation efficiency level of government-assisted agriculture machinery on the increase in rice planting areas. Using stochastic frontier analysis and provincial-level data, this study analysed rice planting areas (2018-2021) and machinery assistance (2017-2020). The results reveal that the national rice planting area is not technically efficient (0.52), with variations across provinces, while the potential exists to increase efficiency by 48%. Water pumps and the number of beneficiary groups significantly affect the technical efficiency. Other machinery types were not statistically significant, potentially because of program concentration in high-density areas. Additional challenges include limited access to repair facilities and spare parts, unskilled operators, and weak management capacity within beneficiary groups. To improve utilisation, central and regional governments should prioritise lower-density areas for machinery distribution, implement support programs for machinery maintenance, provide training programs for operators, and provide technical guidance to managers. By addressing these factors, the program can contribute more effectively to expanding rice-planting areas in Indonesia.
Utilisation of warehouse receipt system as a national food reserve instrument
Authors: Gunawan Endro , Perdana Resty P. , Erwidodo  , Anugrah Iwan S.
Published: July 2024

The warehouse receipt system (WRS) is an instrument for sales delay and financing systems, but it can be essential for developing and strengthening a national food reserve system. This study aims to analyse the performance of the WRS in Indonesia and the role of the WRS as a legal instrument in strengthening the national food reserve system. This study was conducted in 2022, using secondary data from various agencies. The analysis was carried out through a qualitative and descriptive approach. The research results show that WRS in Indonesia has developed relatively slowly. Its functions as delay sales and financing instruments have been negligible, including its limited number, volume, and values of commodities stored in the warehouses, the number of receipts issued, and the total value of financing it disbursed. Until now, the WRS in Indonesia has not been able to act as an instrument for building national food reserves. This study provides some policy recommendations, as follows: (i) the need to fulfil the adequacy conditions for the WRS and (ii) the need to revise Law No. 9/2011 of WRS by adding an article regarding the need for the WRS Council as an inter-Ministerial institution.
Agroecological peculiarities of technogenic pollution of soils and vegetation in the impact zone of Lebedinsky mining and processing enterprise
Authors: Derkach Natalia , Levina Tatiana , Solodukhina Olga , Okorokov Anton , Rastorguev Anton
Published: July 2024

Soil contaminated with heavy metals is of little or no use to most living organisms. Even if the soil does not become lifeless, the biocenoses formed on it are characterised by small biomass volume, low speed of biological processes, narrow species composition (biodiversity), weak stability, etc. In addition, agricultural products obtained on contaminated soils are often simply toxic, due to the increased content of heavy metals. We have investigated the impact of Lebedinsky mining and processing plant on the state of soil and vegetation in the zone of its operation. On the large factual material, the regularities of spatial variation are revealed and the character of statistical distribution of heavy metals content in soils and plants of agricultural crops in the technogenic landscape is established.
Changes in the biological activity of typical chernozem under different pea cultivation technologies
Authors: Dubovik Elena , Dubovik Dmitry , Morozov Aleksander , Shumakov Aleksander , Novikova Tatyana
Published: July 2024

The preservation of soil fertility is a critical task in modern agriculture, necessitating the adoption of technologies that conserve soil resources. This study aimed to investigate the biological activity of typical chernozem under various pea cultivation technologies. The research was conducted on the experimental field of the Kursk Federal Agrarian Research Center, utilizing traditional, differentiated, minimal, and direct sowing methods. The soil used was typical thick heavy loamy chernozem. The study employed the gravimetric method to measure humidity, the application method for the decomposition of flax to assess biological activity, and the Kravkov method to determine the nitrification capacity of the soil. The results showed that differentiated, minimal, and direct sowing technologies for pea cultivation significantly enhanced the nitrifying ability and biological activity of the soil, with average increases of 1.2-1.8 times compared to traditional technology in the 0-20 cm soil layer. These findings highlight the potential benefits of adopting alternative pea cultivation technologies to promote soil conservation and fertility preservation.
Reducing the energy costs of drilling rigs based on the beneficial utilization of secondary drive energy resources
Authors: Asanov Anvar , Djurayev Rustam
Published: July 2024

Drilling wells is a process that requires a lot of energy. When conducting drilling operations, along with electrical energy, thermal energy is also consumed in large quantities. In modern conditions of drilling operations, energy supply issues are of particular importance, and their solution is associated, first of all, with the optimization of energy supply from the energy source to the drive of process equipment. Saving energy resources when drilling wells largely depends on the feasibility of proper organization and regulation of fuel and energy costs. This article presents the results of scientific and practical research on reducing fuel and energy costs of drilling operations based on the beneficial recovery of heat from the drive of a diesel power plant of drilling rigs through the implementation of modern scientific, technical and technological innovative solutions.
Experimental study of the efficiency of heat and mass transfer during ultrasonic drying of textile materials
Authors: Khmelev Vladimir , Shalunov Andrey , Manyakhin Ivan , Terentiev Sergey , Nesterov Viktor
Published: July 2024

The article presents the results of experimental studies of the process of ultrasonic drying of textile wool. It was found that additional ultrasonic exposure makes it possible to accelerate convective drying up to 7.5 times under constant initial experimental conditions. When cotton wool is exposed to ultrasound, thermal diffusion occurs. Water molecules move from the more heated center of the drying object to the less heated surface.
Influence of ultrasonic vibrations on the temperature of the dried material
Authors: Khmelev Vladimir , Shalunov Andrey , Terentiev Sergey , Nesterov Viktor , Manyakhin Ivan , Titova Natalya
Published: July 2024

The article presents studies on ultrasonic drying of agglomerated cork plug samples. It was revealed that the ultrasonic standing wave mode provides an increase in the drying speed compared to the traveling wave mode. It has also been shown that the energy of ultrasonic vibrations is absorbed in the cork material. In this case, the temperature inside the sample is 10 °C higher than on its surface. This helps to increase the rate of moisture release from the internal layers to the surface of the sample due to thermal diffusion.
Evaluation of the yield of wrinkled rosehip (Rosa rugosa Thunb.) in conditions of the south of Primorsky krai
Authors: Ostroshenko Valentina , Ostroshenko Lyudmila , Bikineeva Elena
Published: July 2024

The article studies the yield of wrinkled rosehip (Rosa rugosa Thunb.). This species is the most promising for industrial breeding in the Far East. The studies were carried out on three plots on different types of soils. Measurements of such indicators as: density, height, age, number and weight of fruits, followed by analysis of the results are obtained. The dependence of the number of rosehip fruits on age has been revealed. Habitat conditions affect the number of stems. The results have shown that the number of stems (density) in curtains is much less than in continuous thickets, therefore, the yield here is smaller. According to the data obtained, the height of rosehip thickets belongs to the 1st productivity class with an average height of 1.6 m and 1.28 m, respectively. According to the data obtained, the most fruit-bearing age is 5 years. From the studies obtained, it was revealed that approximately 7.57 fruits per m2 grow in sandy mane conditions, and twice as many ‒ 16.93 fruits per m2 ‒ on meadow soils. The yield of dry weight of rosehip in relation to raw weight ranges from 37.66 % to 38.30 %.
Amino acid status and nitrogen forms of rumen contents in vitro when phytogenic components are added to the reaction medium
Authors: Atlanderova Kseniya , Shoshin Daniil , Kazaev Kirill
Published: July 2024

Phytobiotics are increasingly used in animal husbandry as an alternative to antibiotic drugs. However, before large-scale introduction of such substances into feeding practice, it is necessary to conduct a detailed analysis of their effects on physiological processes, particularly in polygastric animals where most energy is synthesized by the rumen microflora. This study aimed to investigate the indicators of nitrogen metabolism and amino acid composition of rumen fluid when quercetin, 7- hydroxycoumarin, vanillin, and trans-cinnamaldehyde were introduced into the in vitro reaction medium. The results showed that vanillin at a concentration of 49.00×10-5 mol/l promoted the maximum increase in the level of aliphatic, aromatic, and oxymonocarboxylic amino acids, while quercetin and 7-hydroxycoumarin at 98.0×10-5 and 24.50×10-5 mol/l, respectively, best stimulated the accumulation of methionine. Additionally, vanillin at a dose of 24.50×10-5 mol/l had a beneficial effect on the level of positively charged amino acids. The lowest values were found in the experiment with trans-cinnamaldehyde. These findings suggest that the presented phytobiotics, upon further consideration, can be used to regulate and manage the amino acid status of the rumen of ruminants.
New reciples for shortening fats and studying their basic technological characteristics
Authors: Sabirova Nargiza , Majidov Kahramon , Shodiev Bakhtiyor , Ashurov Feruz
Published: July 2024

This study examined the qualitative indicators and physicochemical characteristics of cottonseed, soybean, and linseed oils, as well as their processed products, with the aim of developing new types of shortening fats. The research established that to achieve the required quality and physicochemical characteristics in shortenings from vegetable oils, the following parameters must be observed: phospholipid content (0.97-2.35%), tocopherol content (0.57-1.69 mg/kg), acidity (0.17-0.35 mg·KOH 1 g), and peroxide number (3.1-4.6 mol/kg). Based on these findings, new formulations for shortening fats were proposed using hydrogenated cottonseed (10-90%) and soybean (40-60%) oils, as well as linseed oil (5- 10%). The effective and rational use of local fat sources resulted in improved quality and a minimum content of trans acids, ensuring the food safety of the shortenings. The study also established the role and significance of the quantitative content (15–95%) of hydrogenated fatty acids (Tm=30.7-31.4°C, Tw=180-200 g/cm) and trans-isomerized fatty acids (3.1-4.7%) in the formation of quality indicators and physical and chemical characteristics of the developed shortenings.
Technology for production of purpose-fat mixtures using flax seeds
Authors: Djureyeva Nafisa , Rakhmonov Kakhramon , Isabayev Ismoil , Khaydar-Zade Lolita , Xudaykulov Anvar
Published: July 2024

The article analyzes the indicators characterizing the nutritional value of dried and ground flax seeds in the production of powdery-fat mixtures for the purpose of national flour soup of the “atoli” type, traditionally used in the republics of Central Asia to feed women in the initial postpartum period. The nutritional and energy value of this product with the addition of a flaxseed component has been determined. The main attention is paid to balancing the fatty acid composition according to the ratios of fatty acids of the family ω6 and ω3, as well as saturated, mono- and polyunsaturated. It is shown that the flour component of atola dominating in the existing formulation is wheat flour of the 1st grade or wallpaper, and the fat component is mutton or cream ghee. In this regard, it is proposed to use a fat-flour composition instead of fat, the flour component of which is a crushed non-fat mass of oilseeds of flax. The use of the combination effect makes it possible to increase the nutritional value of products by significantly increasing the content of physiologically significant limiting nutrients in them.
Algorithms and 3D visualization tools to bring geometric data to life, facilitating immersive experiences and interactive storytelling
Authors: Sabirova Dildora , Inoyatov Mirzayor , Aripova Kamola , Alimova Dildora
Published: July 2024

The fusion of measurement geometry and computer graphics has ushered in a realm where geometric principles intersect with visual representation, creating a dynamic landscape of spatial analysis, visualization, and digital creativity. This article explores the synergies between measurement geometry and computer graphics, delving into the essence of geometric data, rendering techniques, 3D modeling, and virtual reality applications in a digitized world. Within the realm of measurement geometry, the precision of spatial relationships, dimensional analysis, and geometric computations forms the foundation for accurate measurements and analysis across diverse domains. On the other hand, computer graphics technologies harness geometric transformations, rendering algorithms, and 3D visualization tools to bring geometric data to life, facilitating immersive experiences and interactive storytelling. The abstract navigates through the realms of polygonal modeling, computational geometry, virtual reality, and spatial mapping, unveiling the intricate ways in which geometric data shapes visual content, simulations, and augmented reality applications. By exploring the integration of geometric algorithms, visualization techniques, and geometric precision, this research bridges the gap between theoretical geometry and practical visual representation in the digital domain.
Obtaining sorbents based on bentonite and wastewater treatment of hydrometallurgical plants
Authors: Husenov Kakhramon , Aliev Togaymurot , Allayorov Norbek , Ibragimova Maftuna , Karimov Zokir , Abdiramanova Zamira
Published: July 2024

Methods of physico-chemical analysis of the composition of industrial wastewater and the use of sorption materials obtained on the basis of compositions of various chemical reagents with local minerals have been developed. The physicochemical and mechanical properties of the newly obtained composite materials have been studied. The composition of bentonite of the Navbakhor mine consists mainly of polygorskite carbonate, the general chemical composition consists of the following clays: Mg2Al2[Si8O20](OH)2·8H2O·CaCO3. Bentonite also contains kaolinite Al4[Si].4O10]·(OH)8, polymorphic modification, polishplate K[AlSi3O8]·Na[AlSi3O8]·Ca[Al2Si2O8], silica SiO2, beidellite (Na, Ca)·Al(Si, Al) present), calcite CaCO3. Wastewater samples from a hydrometallurgical plant were used as an experimental object. It was found that the heat treatment of bentonite clay has practically no significant effect on the mineralogical composition and structure of the sorbents obtained from it, but has a positive effect on the mechanical strength of the granules. It has been established that the optimal firing temperature of bentonite sorbents is 550-800 °C, since at lower firing temperatures sorbent samples do not have sufficient strength limits. The effective effect of modified bentonites as a sorbent in wastewater treatment of “GMZ” has been determined, especially in the case of bentonite containing copper and aluminum oxides.
Virtual simulation of the heat exchanging process of a lithium-ion battery in a vehicle
Authors: Gaslov Sergey , Rublev Maxim , Kopytov Stanislav
Published: July 2024

The article describes a virtual (numerical) model of part of the temperature control system of a lithium-ion battery developed for subsequent modeling of the required operating conditions as part of a vehicle. This system lets to maintain a strictly defined temperature regime automatically. It is required for the safe operation of battery cells, protecting them from overheating and cooling during operation. The virtual model under consideration consists of a thermal model of the battery and a control system for it, while the control algorithm is specified in the form of a block diagram. The article is a continuation of work on the creation of a comprehensive functional 1D top-level model of the product to predict the operation of a typical battery pack depending on the type of vehicle and the battery management system (active or passive balancing).
Socio-economic potential of the territory as a factor in the development of organic agriculture
Authors: Maksimovich Kirill Yu. , Lisitsin Alexander E. , Aleschenko Vitaly V. , Yakushev Adel M. , Sayfutdinova Adelya M.
Published: July 2024

This paper presents the results of studies on the examination of rural areas in the regions of the Siberian Federal District (SFD) regarding the organization and expansion of organic agricultural production. For the socio-economic characterization and compilation of the rating potential of the SFD subjects, demographic, infrastructure, and territorial groups of factors were identified. The main competitive advantages of production and implementation of organic products were identified for each region. The rating compiled by the authors identifies the Novosibirsk region as the most promising for the development of various forms of organic agriculture. Krasnoyarsk, Irkutsk, and Tomsk regions also have high potential. The Republic of Altai and the Omsk region can be considered as regions of medium prospects due to limitations imposed by the weak development of some of the factors considered. The Republics of Tuva and Khakassia, as well as Altai and Kemerovo regions, are limitedly suitable for the development of the organic sector. A clear definition of the priorities of agricultural producers, the choice of a suitable strategy, and the presence of state support at all stages of the organization of organic production will be a necessary condition for the successful development of the sector.
Land resources of the Republic of Tyva and their rational use
Authors: Sambuu Anna , Dapyldye Albert , Nazhik Maadyr , Ondar Orlan
Published: July 2024

The Republic of Tyva (Russia), located at the junction of the South Siberian taiga and Central Asian desert landscapes, has a diverse potential of natural resources, including land. The natural conditions of the republic are difficult: a very harsh climate, the relief of the territory is mountainous and hollow, which make it difficult to develop natural resources. Many scientists of pre-revolutionary Russia and the Soviet Union were engaged in the problems of developing the natural potential of the republic, now research is conducted by scientific collectives of the country. They studied natural conditions and natural resources, published fundamental works on the rational development of the republic's wealth. In a small area, soils from rich, ordinary and southern chernozems, various variants of chestnut to mountain-taiga and mountain-tundra soils are common. Tuva's land resources are formed with a small and uneven distribution of precipitation, deep freezing of soils in open steppe areas, different capacities and mechanical composition of soil-forming rocks, their unequal infiltration ability, forming the soil cover and distribution of landscapes. Due to the low soil fertility, the republic belongs to the areas of risky agriculture. The work is devoted to the analysis of Tuva's land resources and their rational use.
Selection of optimal parameters boom lifting mechanism
Authors: Kardash Artem A. , Rybin Vyacheslav V. , Babin Vladimir V. , Serebrennikov Yuri E. , Romanenko Maxim Yu.
Published: July 2024

This document describes the calculation procedure for selecting the optimal parameters of the boom lifting mechanism in agricultural machinery. A boom lifting scheme was developed. Studies have been carried out to find the optimal values of linear dimensions and angle, at which the required value of the force developed by the drive when lifting the boom with a hydraulic cylinder of the specified dimensions will be minimal. Based on the results of the study, an algorithm was developed for solving the optimization of boom lifting parameters. An expression is obtained for the objective function of optimizing the boom lifting mechanism. Algorithm for selection of optimal parameters of lifting mechanism considering weight of boom, hydraulic cylinder and rod has been developed.
The car paintwork defects contactless control system mathematical model
Authors: Kozlov Anton , Ugarova Ludmila , Gulyaev Vadim , Loginov Nikolay
Published: July 2024

The research is aimed at solving the problem of automating the search for visual defects in the car body paintwork. A digital image was used to search for paintwork defects. It is proposed to use a system based on a personal computer and an opto-digital module to obtain it. The image recognition process automation is achieved by applying various algorithms that ensure the corresponding subsystems operation. The image processing process involves the procedures for its evaluation and quality improvement production, as well as the objects recognition and the characteristics determination in the image. Carrying out these procedures requires the development of appropriate algorithms. The evaluating and improving the quality algorithm main function input image in relation to the problem being solved is to find possible paintwork defects in the image and bring the image quality to acceptable for further processing in case of defects.
Principles of protection against single phase earth faults in networks with capacitive current compensation
Authors: Ataullayev Nodir , Norqulov Asliddin , Muxammadov Bobur , Majidov Axror , Togayev Islom
Published: July 2024

Protections that respond to a constant operating current applied to the network. This principle allows, in addition to the protection itself, continuous monitoring of insulation defects. But the imposition of direct current on the network is common only in networks with a voltage below 1000 V. In relation to 3-35 kV networks, the applied direct current is not used, in particular, due to the fact that the possibility of individual blind grounding of several neutrals of the primary windings of voltage measuring transformers, which can be installed at different substations of the network, is excluded. The protection with the imposition of direct current has most of the elements in galvanic connection with the generator voltage system, which, of course, reduces operational reliability. Moreover, grounding the system can lead to catastrophic consequences. The use of this method is also limited by the fact that special transformers must be installed at each connection, which in turn is very expensive.
Preparation of liquid feed mixtures with continuous introduction of components
Authors: Solonshickov Pavel , Tolstoukhova Irina , Shevchenko Artem
Published: July 2024

The article deals with the problem of increasing the efficiency of mechanization of forage harvesting in animal husbandry. According to the analysis of mixer designs and installations, a pilot project was proposed to cover the entire range of devices presented. A method for evaluating the quality of a mixture (degree of uniformity) with continuous introduction of components is proposed and a diagram of a laboratory installation is presented. Experimental studies have shown the feed range of the installation at different speeds of rotation of the impeller shaft. Mixing studies have confirmed the effectiveness of the plant design and its components: feeder, pump and mixer. Using experimental planning methods, the main factors influencing the mixing process were identified and the optimal parameters of the mixture quality were determined. When the unit was operating as a pump, a range of feeds in an open and closed loading chamber was obtained, and mixing quality indicators with continuous introduction of components, as well as water temperature t = 25...38 °C and the rotation speed is n= 1500...1600 min-1 reached the value of uniformity degree Θ=94.8%.
Realisation of energy saving potential at mining enterprises on the basis of optimal intramill filling
Authors: Starykh Svetlana , Minakova Irina , Derkach Natalia , Taranenko Maksim , Ermolaev Denis
Published: July 2024

The authors present the development of an automated system for controlling the loading of the output mill of pebbles and scrap of the beneficiation plant of JSC Lebedinsky GOK on the basis of measurement of bearing vibration signals. The object of our research is a universal orepebble ball mill (MSHRGU 4500x6000). The aim of the work is to develop, on the basis of the analysis of domestic and foreign experience, a mechanism for increasing productivity and minimising specific energy consumption of the ball mill by optimising the intramill filling. The proposed system will ensure the technological process of the mill in the modes of maximum loading with no overloading, which will increase the efficiency of production by reducing specific energy consumption.
The diameter structure of forests disturbed by the four-eyed fir bark beetle (Polygraph proximus Blandford)
Authors: Vais Andrey , Popova Valentina , Andronova Alina , Mikhaylov Pavel , Nemich Victor , Nepovinnykh Artem
Published: July 2024

This article presents a study of disturbed fir stands in the foothills of the Eastern Sayan. The research was conducted through field surveys on temporary research plots. The data obtained were used to establish the distribution pattern of trees based on natural diameter classes. A comparative analysis of the data was carried out with standard series of distribution of the number of trees of fir forests by Falaleev. The study revealed variations in tree distribution, which could be attributed to dissimilarities in data collection techniques, as well as the condition of the forest stand following pest invasion.
Oak forests in reserves of the Far East
Authors: Ostroshenko Valentina
Published: July 2024

Oak is one of the most important woody plants in the Far East. It is of great national economic importance. The article is devoted to the study of species diversity, as well as the distribution of the oak area and its stock in the Far East in the period 2016-2023. The work is based on the analysis of the sources of literature and forest inventory materials on the topic of research. Within the Far East, there are four species of the genus Quercus, namely: Mongolian oak (Quercus mongolica Fisch. Ex Turcz.), Japanese emperor oak (Q. dentata Thunb.), mizunara (Q. crispula Blume) and Quercus wutaishanica Mayr (Q. wutaishanica Mayr.). It was found that over the last 7 years the area of oak distribution in the region, especially in Primorsky Territory, has decreased. This is due to forest fires, illegal cutting of timber. One of the ways in which it can be restored can be the use of growth stimulants in forest nurseries when growing seedlings. Sowing of oak acorns under the forest canopy, in burned areas, clearings, as well as wastelands and areas not covered with forest vegetation is possible with the help of a manual cane seeder.
Condition and structure of meadow vegetation in the floodplain area of the Bolshoi Kinel River
Authors: Ermakova Natalia , Stepanova Yulia , Nechaeva Elena , Goryanin Oleg , Volodina Irina
Published: July 2024

This study aims to characterize the structural composition of little-studied riverine grassy landscapes, focusing on the vegetation of floodplain meadows. Botanical analysis of the vegetation was conducted on the territory of the floodplain of the Bolshoi Kinel River, Kinelsky district, Samara region, using generally accepted geobotanical methods. The current state and composition of plant communities in the floodplain meadows of the Bolshoi Kinel River are described. The study reveals that various types of floodplain meadows were formed on the floodplain profile under the influence of environmental and natural factors, with three classes of meadow formations identified: real, steppe, and swampy. The real meadow formations predominate on the floodplain profile, characterized by a high number of plant associations and plant species. In contrast, the steppe meadow formations, common in the middle section of the floodplain, are less developed, as evidenced by the associative and species composition of the grass stand. Notably, the vegetation of swampy meadows requires a comprehensive and more detailed study, as the floodplain of the Bolshoi Kinel River is characterized by an abundance of swamps distributed throughout the entire profile.
Engineering-geological conditions and interactions of technogenic processes with the environment
Authors: Djaksimuratov Karamatdin , Zakirov Mirabbos , Agzamova Inabat , Begimkulov Dilshod , Ochilov Golibjon , Akimova Azima , Jumabaeva Guljaxan
Published: July 2024

The article discusses very pressing problems associated with the engineering and geo-ecological conditions of the city of Zarafshan and adjacent territories, in connection with the expansion of industrial and civil construction. The purpose of the research is to study the engineering and geo-ecological conditions of the distribution of bentonite clays, which are the basis of structures and the intensive development of natural and manmade processes. Modeling shear deformations of foundations on swelling clays is one of the most complex material systems. Swelling clays of the Eocene have pronounced features of deformation behavior, which must be taken into account when assessing deformations and justifying construction projects. Based on this, a danger affecting the stability of the structure is clay shrinkage. Based on the engineering and geo-ecological studies carried out on the territory of the city of Zarafshan, the values of the total deformation of swelling Eocene clays under different loads from the structure for a single-layer model were established. With a constant load from the structure and a variable load of swelling-shrinkage, a system of annually repeated impacts is formed, mainly precipitation and economic activity, which creates a danger for the stability of buildings and structures and the surrounding geo-ecological environment.
The influence of the transverse and longitudinal distance of disk skim-coulter on performance of the plough
Authors: Normirzaev Abdukayum , Tukhtabayev Mirzokhid , Ruziev Islambay , Ruzmetov Ilkhom
Published: July 2024

The article examines influence of the transverse and longitudinal distance from the disk center to the toe of the plowshare body in plan on the performance of the plow. The nature of changes in traction resistance, changes in embedment depth and the influence of longitudinal distance on the nature of changes in embedment depth are also considered. The dependence of the longitudinal distance on the angle attack, depth of passage, sphere radius, disk radius and angle of installation of the ploughshare to the wall of the furrow was studied. Based on the results of experimental studies, influence of the longitudinal and transverse distance from the disk center to the toe of the ploughshare on the clogging of the working parts was studied.
Study of the protective properties of special clothing fabrics under the influence of crude oil
Authors: Chorieva Mukhabbat , Kurbanov Fazliddin , Asadova Sitora , Asadova Zarina , Sultanova Feruza
Published: July 2024

This study explores the chemical fixation method for imparting special properties to fabrics used in special clothing for oil and gas industry workers in Uzbekistan. The primary objective is to evaluate the water, oil, and fire resistance properties of these fabrics and propose methods for enhancing them. Experimental results show the adsorption and desorption of oil products, as well as the hydrophobic and flame-retardant properties of the fabrics. The treatment with a collagen-based flame-retardant composition was found to be effective in improving the flammability and flame charring performance of cotton and viscose fiber fabrics. Additionally, halogen-free flame retardants were identified as having low toxicity and low smoke generation during combustion. The study also examines the impact of oil soaking and drying regimes on the physical and mechanical properties of the samples.
Aftereffects of environmental engineering of the 20th century in the forest-steppe zone of the Tambov Plain
Authors: Kovalev Ivan , Kovaleva Natalia
Published: July 2024

The purpose of this study was to analyze the aftereffects of a set of engineering measures to implement the so-called “Nature Transformation Plan” on the territory of the forest-steppe zone of Central Russia (Tambov, Lipetsk, Voronezh oblasts) based on archival materials of drilling logs of 1900-1914, archival documents of 1949-1953, as well as the results of soil and hydrological studies in 2015-2023. The results of chemical analysis of groundwater 1914 and 2015 found that the chemical composition of the aquifer water - hydrocarbonate-sodium - has not changed significantly over the 100-year period, only a slight decrease in total water hardness and an increasing trend in sulfate and chloride content. It is shown that the stage of anthropogenic development of Tambov region by construction of ponds, forest strips and introduction of irrigation in the course of implementation of Stalin’s plan of nature transformation without taking into account the specifics of hydrology of the region has led to the rise of the level of hydrocarbonate-sodium groundwater by 2-3 m, to the complete, not temporary, destruction of the “dead horizon” in chernozems and will contribute to further deterioration of their properties.
Methods of increasing the efficiency of dust-laden air cleaning from the aspiration system of the UHK cleaning unit
Authors: Usanov Abdulkhakim , Shomirzaev Ergash
Published: July 2024

The article covers the results of an analytical review of technology and technical means for cleaning dust-laden air released during the cleaning of raw cotton by the UHK cleaning unit; the air is taken into cyclones using an aspiration system including pneumatic lines, a fan and a conical cyclone. As a result, the drawbacks of the existing aspiration system for UHK cleaning units were identified; it was determined that the efficiency of the aspiration system for cotton cleaning units largely depends on the correctly chosen design of the diffuser, in which part of the dynamic pressure is converted into static pressure. A working hypothesis that allows reducing pressure losses in aspiration pipelines arising due to the irrational design of their elements has been developed. The chosen direction for further research consisted of determining the optimal diameter of the air duct, considering the speed mode of operation of the cyclone connected to it, which serves to clean polluted air emitted by the fan into the atmosphere, choosing the length of the diffuser, ensuring minimal losses of dynamic pressure, air speed in the narrow and wide sections of the diffuser in depending on the performance of the fan of the aspiration system of the UHK cleaning unit for cleaning raw cotton from small and large impurities.
Green biotechnologies in the trend of scenario development of the agro-industrial complex
Authors: Fedotova Gilyan , Larionova Irina , Kapustina Yuliy , Ershova Irina , Bolaev Baatr , Dzhancharova Gulnara
Published: July 2024

Forecast scenarios of scientific and technological development of the national economy are adaptively written off in the paradigm of technological patterns and progressive development of industries. The AIC becomes one of the supporting industries actively generating and implementing the production process of new biotechnological production solutions in the trend of green development. The tendencies of future forecast of biotechnologies application and growth of demand for products with new qualitative characteristics are considered. The conclusions are drawn about the growth of activity with regard to the search and development of fundamentally new approaches to the production and processing of AIC products.
Assessment of contour deformations of reused mine workings
Authors: Zakorshmenniy Iosif , Kharitonov Igor , Yagel Nikita , Svishcheva Anastasia , Maksimenko Yury
Published: July 2024

The paper describes studies to assess the impact of high-intensity mining of flat-lying coal seams in difficult mining and geological conditions on the stability of reused development workings. A scheme for computer modeling of changes in the stress-strain state of a layered carbon rock mass, including development workings, at different positions of the working face is proposed. For the conditions of one of the operating mines of the Pechersk coal basin (Komi Republic, Russia), numerical experiments were carried out using the finite element method in the MIDAS / GTS NX software package. To describe changes in the geomechanical state of the described mining system, the Coulomb–Mohr criterion was used. The results of numerical studies made it possible to estimate the displacement values of the boundary areas of the development mine workings as the working face advances. The obtained estimates are confirmed by data from mine instrumental observations.
Les défis technologiques et humains de la microélectronique et des nanotechnologies
Authors: Bonnaud O.
Published: July 2024

Le développement des technologies numériques associées à internet dans le monde a été fulgurant depuis le début des années 2000 avec une croissance exponentielle. Il en est de même pour la quantité de données transférées et traitées et pour la consommation d’énergie électrique. Si cette tendance ne se ralentit pas, d’ici 2030, la totalité de la production mondiale d’énergie électrique sera consacrée aux activités numériques. Tous les équipements numériques sont basés sur des composants, circuits et systèmes microélectroniques. Le défi actuel consiste à diviser par 100 la consommation d’électricité des équipements électroniques. De nombreuses solutions récentes issues d’activités de recherche impliquant de nouvelles architectures, technologies, matériaux et concepts sont disponibles. Mais la mise en œuvre de ces approches nécessite de nouvelles compétences directement liées aux besoins des entreprises de la microélectronique. Une politique d’acquisition de nouvelles compétences dans le domaine est actuellement développée dans le cadre du réseau national français d’enseignement supérieur en microélectronique. L’objectif final est de former plus de trente mille ingénieurs, docteurs et techniciens dans les six prochaines années dans le cadre du programme France 2030.
Etude de cas en plastronique IME – Alliance de la plasturgie et de l’électronique pour le packaging de systèmes 3D
Authors: Lombard Ph. , Cauchy-Clerc H. , Allard B. , Cabrera M.
Published: July 2024

Au croisement des métiers de la plasturgie et de l’électronique, la plastronique ouvre de nouvelles opportunités pour miniaturiser et intégrer de manière optimale des systèmes électroniques aux objets polymères en trois dimensions – 3D. De nouveaux procédés émergent et trouvent des applications innovantes dans des secteurs d’activité très diversifiés. Cet article introduit une étude de cas qui a été développé avec le procédé plastronique 3D d’Electronique Structurelle Surmoulée (ESS) également appelé IME (In Mold Electronics). Dans un objectif pédagogique, nous illustrons un travail pratiques de mise en œuvre. Nous passons en revue l’ensemble des étapes de fabrication d’un système appelé « La Boucle infinie ». L’étude de cas se prête à un travail de Travaux Pratiques dans une approche d’enseignement par projets qui vise l’attractivité et la pluridisciplinarité.
Découverte des processus de fabrication en microassemblage électronique, du BUT 3 au doctorat
Authors: Debéda H. , Gracia A. , Fadel L. , Oyhenart L. , Tomas J.
Published: July 2024

La mise en place du BUT a entrainé des modifications des contenus pédagogiques et volumes horaires. C’est dans ce cadre que s’inscrivent les travaux pratiques de micro-assemblage nouvellement proposés en BUT 3 GEII de Bordeaux, parcours Electronique et Systèmes Embarqués. De plus, à un niveau supérieur, des cours et TP centrés sur le micro-assemblage peuvent être suivis par les doctorants des 2 écoles doctorales SPI et Sciences chimiques ; cette formation a pour objectif de compléter leur formation à la recherche en élargissant leur culture scientifique et/ou les aider dans leurs réflexions sur leur projet professionnel.
Favoriser l’émergence des compétences recherche et innovation avant la thèse
Authors: Fesquet L. , Lesage X. , Merio C. , Naimi A. , Engels S.
Published: July 2024

L’enseignement supérieur et, en premier lieu, les formations d’ingénieurs utilisent de plus en plus souvent un référentiel de compétences pour évaluer leurs étudiants. Parmi les compétences requises, la compétence recherche est probablement l’une des plus difficiles à transmettre. En effet, même les étudiants de niveau Master ou les élèves-ingénieurs sont naturellement peu exposés à une activité de recherche car ils sont toujours en cours de formation et ne possèdent pas tout le bagage scientifique nécessaire pour s’y adonner. Pourtant, il est possible au travers de projets de leur faire découvrir les facettes nécessaires à l’innovation et à la découverte. La méthode est illustrée par un projet de conception d’un circuit microélectronique.