Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298798
M. Tseitlin, Andrii Shkop, O. Shestopalov, V. Raiko, Nataliia Ponomarova
The object of this study was the processes of heat and mass transfer in a column heat exchanger with direct phases contact. The investigated problem is related to the need to determine the estimates of the kinetic characteristics of heat exchange during the concentration of solutions in a contact heat exchanger equipped with dual-flow trays. In particular, it was assumed that the determination of the influence of the gas velocity in the apparatus and the density of liquid irrigation of the plates, as well as the geometry of the plates, on the kinetic coefficients would make it possible to reveal the patterns of heat and mass exchange between the liquid and the air in contact with it in the column apparatus. It was determined that to increase the intensity of mass transfer in the gas and heat transfer in the liquid, it is necessary to increase the gas velocity and irrigation density. Then the gas velocity and irrigation density have approximately the same effect on the intensity of mass transfer in the gas and heat transfer in the liquid. When studying the effect of the geometry of the plate on the kinetic coefficients of heat transfer in the liquid and mass transfer in the gas, it was established that the value of the portion of the free cross section of the plate has a decisive influence on the value of the considered kinetic coefficients. A generalized equation was built, which makes it possible not only to calculate the enthalpy transfer coefficient during the interaction of sodium chloride solution with air but also to determine the limiting stage of this process. The results could be used to design a unit for concentrating a hot solution of sodium chloride by evaporating water during blowing with air in a contact heat exchanger. This would make it possible to obtain crystalline sodium chloride using secondary energy resources and other non-traditional sources of thermal energy
{"title":"Determining heat and mass exchange kinetic in a column heat exchanger with direct phases contact","authors":"M. Tseitlin, Andrii Shkop, O. Shestopalov, V. Raiko, Nataliia Ponomarova","doi":"10.15587/1729-4061.2024.298798","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298798","url":null,"abstract":"The object of this study was the processes of heat and mass transfer in a column heat exchanger with direct phases contact. The investigated problem is related to the need to determine the estimates of the kinetic characteristics of heat exchange during the concentration of solutions in a contact heat exchanger equipped with dual-flow trays. In particular, it was assumed that the determination of the influence of the gas velocity in the apparatus and the density of liquid irrigation of the plates, as well as the geometry of the plates, on the kinetic coefficients would make it possible to reveal the patterns of heat and mass exchange between the liquid and the air in contact with it in the column apparatus. It was determined that to increase the intensity of mass transfer in the gas and heat transfer in the liquid, it is necessary to increase the gas velocity and irrigation density. Then the gas velocity and irrigation density have approximately the same effect on the intensity of mass transfer in the gas and heat transfer in the liquid. When studying the effect of the geometry of the plate on the kinetic coefficients of heat transfer in the liquid and mass transfer in the gas, it was established that the value of the portion of the free cross section of the plate has a decisive influence on the value of the considered kinetic coefficients.\u0000A generalized equation was built, which makes it possible not only to calculate the enthalpy transfer coefficient during the interaction of sodium chloride solution with air but also to determine the limiting stage of this process.\u0000The results could be used to design a unit for concentrating a hot solution of sodium chloride by evaporating water during blowing with air in a contact heat exchanger. This would make it possible to obtain crystalline sodium chloride using secondary energy resources and other non-traditional sources of thermal energy","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140419207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the daily diet, bread is an excellent carrier of nutrients to replenish the body. In this direction, as an additive, dog rose syrup (DRS) can be indispensable for the production of a wide range of bakery products. One of the factors limiting the widespread use of DRS in baking production is the insufficient knowledge of its biological value and changes in the share of nutrients in the technological process. Therefore, the purpose of the study is to analyze the nutritional value, vitamin and mineral composition of wheat flour “Azamatli-95” of the first grade (A95WF), DRS from the variety “R.canina”, and bread with the addition of DRS. It was found that with the addition of 5, 10 and 15 % DRS to A95WF in bread samples, the content in g/100 g significantly increases: glucose (0.09±0.05), fructose (0.15±0.08), sucrose (0.02±0.01) and phenolic compounds (0.38±0.1); in mg/100 g: beta-carotene (0.152±0.076), vitamin C (33.6±16.3), potassium (40.07±20.03), magnesium (36.49±18.25), phosphorus (20.94±10.47); in µg/100 g: iron (128.86±64.43) and zinc (18.95±9.47) and the content in g/100 g slightly increases: starch, proteins and raffinose (0.01±0.01), cellulose (0.04±0.02), pectin substances (0.03±0.01); in mg/100 g: thiamine (0.006±0.003), riboflavin (0.013±0.006), niacin (0.015±0.008), calcium (5.39±2.7), sodium (1.25±0.62), sulfur (5.99±2.99); in µg/100 g: iodine (0.42±0.21), cobalt (0.62±0.31) with deviation from the best bread with the addition of 10 % DRS to A95WF. The resulting regression equations (АЕ<7 %) make it possible to predict and establish a relationship between the shares of changes in significantly changing nutrients, vitamins and minerals in the technological process and the increase in their content in bread
{"title":"Establishing the character and share of changes in nutrients during the production of bread with the addition of dog rose syrup","authors":"Yashar Omarov, Eldaniz Bayramov, Aygun Haciyeva, Sevda Gurbanova, M. Aslanova, Mehman Ismayilov, Ahad Nabiyev","doi":"10.15587/1729-4061.2024.297772","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.297772","url":null,"abstract":"In the daily diet, bread is an excellent carrier of nutrients to replenish the body. In this direction, as an additive, dog rose syrup (DRS) can be indispensable for the production of a wide range of bakery products. One of the factors limiting the widespread use of DRS in baking production is the insufficient knowledge of its biological value and changes in the share of nutrients in the technological process. Therefore, the purpose of the study is to analyze the nutritional value, vitamin and mineral composition of wheat flour “Azamatli-95” of the first grade (A95WF), DRS from the variety “R.canina”, and bread with the addition of DRS. It was found that with the addition of 5, 10 and 15 % DRS to A95WF in bread samples, the content in g/100 g significantly increases: glucose (0.09±0.05), fructose (0.15±0.08), sucrose (0.02±0.01) and phenolic compounds (0.38±0.1); in mg/100 g: beta-carotene (0.152±0.076), vitamin C (33.6±16.3), potassium (40.07±20.03), magnesium (36.49±18.25), phosphorus (20.94±10.47); in µg/100 g: iron (128.86±64.43) and zinc (18.95±9.47) and the content in g/100 g slightly increases: starch, proteins and raffinose (0.01±0.01), cellulose (0.04±0.02), pectin substances (0.03±0.01); in mg/100 g: thiamine (0.006±0.003), riboflavin (0.013±0.006), niacin (0.015±0.008), calcium (5.39±2.7), sodium (1.25±0.62), sulfur (5.99±2.99); in µg/100 g: iodine (0.42±0.21), cobalt (0.62±0.31) with deviation from the best bread with the addition of 10 % DRS to A95WF. The resulting regression equations (АЕ<7 %) make it possible to predict and establish a relationship between the shares of changes in significantly changing nutrients, vitamins and minerals in the technological process and the increase in their content in bread","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140419350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.297769
J. Ismailova, A. Baibekova, D. Delikesheva, A. Abdukarimov, A. Khussainova
Compositional modeling of the reservoir isn’t complete without calculations of phase equilibrium and is a complex process involving many calculations. In nature, hydrocarbons don’t occur as separate components, they’re mainly mixtures. When modeling the reservoir composition for phase equilibrium calculations, in order to reduce computational costs, in practice, hydrocarbon mixtures are grouped into pseudo-components. The number of grouped pseudo-components varies from 4 to 10. This grouping process is called lumping. However, when crude oil comes to the surface, it’s important to know its detailed composition, since mixtures grouped into pseudo-components don’t allow you to know this. In this regard, modeling of the detailed composition of hydrocarbons is the main tool for understanding the detailed phase separation and design of surface facilities. In practice, this process is called delumping. In the case of this process, the detailed composition of the fluid is presented and the amount reaches up to 36 components, sometimes more. The delumping process, due to the precise separation of heavy plus fractions into carbons with single ordinal numbers (C7, C8, etc.), makes it possible to clearly recognize non-zero BIP’s in the equation of state. The new analytical approach has not previously been applied to the oils of the Caspian region, so this approach has an important role for the oil industry in the Caspian region. Analytical delumping in this paper was done to improve the PVT modeling. This paper presents the results of PVT research of Caspian oil and presents a comparison of analytical and numerical methods of delumping. As a result of the study, it was found that the analytical approach is in excellent agreement with experimental data and data from software such as PVTsim
{"title":"Pressure-volume-temperature analysis of Caspian oil to improve the analytical delumping procedure","authors":"J. Ismailova, A. Baibekova, D. Delikesheva, A. Abdukarimov, A. Khussainova","doi":"10.15587/1729-4061.2024.297769","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.297769","url":null,"abstract":"Compositional modeling of the reservoir isn’t complete without calculations of phase equilibrium and is a complex process involving many calculations. In nature, hydrocarbons don’t occur as separate components, they’re mainly mixtures. When modeling the reservoir composition for phase equilibrium calculations, in order to reduce computational costs, in practice, hydrocarbon mixtures are grouped into pseudo-components. The number of grouped pseudo-components varies from 4 to 10. This grouping process is called lumping. However, when crude oil comes to the surface, it’s important to know its detailed composition, since mixtures grouped into pseudo-components don’t allow you to know this. In this regard, modeling of the detailed composition of hydrocarbons is the main tool for understanding the detailed phase separation and design of surface facilities. In practice, this process is called delumping. In the case of this process, the detailed composition of the fluid is presented and the amount reaches up to 36 components, sometimes more. The delumping process, due to the precise separation of heavy plus fractions into carbons with single ordinal numbers (C7, C8, etc.), makes it possible to clearly recognize non-zero BIP’s in the equation of state.\u0000The new analytical approach has not previously been applied to the oils of the Caspian region, so this approach has an important role for the oil industry in the Caspian region. Analytical delumping in this paper was done to improve the PVT modeling. This paper presents the results of PVT research of Caspian oil and presents a comparison of analytical and numerical methods of delumping. As a result of the study, it was found that the analytical approach is in excellent agreement with experimental data and data from software such as PVTsim","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The object of this study is to robotize the technological operation of removing the oxide film from the surface of a magnesium melt poured into continuously moving molds of a casting conveyor for the production of commercial magnesium. To robotize this technological operation, it is proposed to use a two-armed manipulation robot with a spherical coordinate system, which has six degrees of mobility. Software trajectories have been developed according to the degrees of mobility of the manipulation robot in terms of position, speed, and acceleration to perform the technological operation of removing the oxide film from the surface of the magnesium melt poured into the moving molds of the foundry conveyor. Programmed trajectories are described by quadratic polynomials that satisfy restrictions on the values of the generalized coordinate, velocity, and acceleration. These limitations are determined by the design features and energy capabilities of the degrees of mobility drives of the manipulation robot. Programmed trajectories along the first and second degrees of freedom compensate for the continuous movement of the molds of the foundry conveyor. Programmed trajectories along the third and fourth degrees of mobility enable the collection of the oxide film from the surface of the magnesium melt. Programmed trajectories along the fifth and sixth degrees of freedom enable the discharge of the collected oxide film into a special container. The reliability of the developed programmed trajectories is confirmed by the simulation results using MATLAB version R2015b. Based on the results, a cyclogram for controlling a manipulation robot has been constructed to perform the technological operation of removing the oxide film in the production of commercial magnesium. The results could be used in the robotization of technological processes for removing the oxide film in the production of commercial magnesium or similar foundries
{"title":"Development of programmed trajectories based on the mobility degrees of manipulation robot with a spherical coordinate system for removing oxide film in the production of commercial magnesium","authors":"Akambay Beisembayev, Anargul Yerbossynova, P.Yu. Pavlenko, Mukhit Baibatshayev","doi":"10.15587/1729-4061.2024.298912","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298912","url":null,"abstract":"The object of this study is to robotize the technological operation of removing the oxide film from the surface of a magnesium melt poured into continuously moving molds of a casting conveyor for the production of commercial magnesium. To robotize this technological operation, it is proposed to use a two-armed manipulation robot with a spherical coordinate system, which has six degrees of mobility. Software trajectories have been developed according to the degrees of mobility of the manipulation robot in terms of position, speed, and acceleration to perform the technological operation of removing the oxide film from the surface of the magnesium melt poured into the moving molds of the foundry conveyor. Programmed trajectories are described by quadratic polynomials that satisfy restrictions on the values of the generalized coordinate, velocity, and acceleration. These limitations are determined by the design features and energy capabilities of the degrees of mobility drives of the manipulation robot. Programmed trajectories along the first and second degrees of freedom compensate for the continuous movement of the molds of the foundry conveyor. Programmed trajectories along the third and fourth degrees of mobility enable the collection of the oxide film from the surface of the magnesium melt. Programmed trajectories along the fifth and sixth degrees of freedom enable the discharge of the collected oxide film into a special container. The reliability of the developed programmed trajectories is confirmed by the simulation results using MATLAB version R2015b. Based on the results, a cyclogram for controlling a manipulation robot has been constructed to perform the technological operation of removing the oxide film in the production of commercial magnesium. The results could be used in the robotization of technological processes for removing the oxide film in the production of commercial magnesium or similar foundries","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298844
S. Milevskyi, O. Korol, G. Mykytyn, Iryna Lozova, Svetlana Solnyshkova, I. Husarova, Alla Hrebeniuk, A. Vlasov, V. Sukhoteplyi, Dmytro Balagura
The constant increase in the number of threats to the security of critical infrastructure objects, which include socio-cyberphysical systems, leads to a decrease in the quality of security services and the level of security of infrastructure elements. The object of research is the process of building a complex system of protection in socio-cyberphysical systems. The imperfection of the mechanisms for ensuring the security of critical infrastructure objects, which include socio-cyberphysical systems, the technological complexity of identifying new security threats necessitates an urgent need for a radical revision of the current approaches to its provision. So, it becomes clear that the development of a new approach to ensuring the security of information resources in socio-cyberphysical systems is needed. The article proposes a new approach to the methodological foundations of building multi-contour information protection systems with internal and external circuits on each of the platforms of socio-cyberphysical systems. This approach is based on a universal classifier of threats, which takes into account not the technical aspect of threats, but also their integration with social engineering methods, their synergy of hybridity. The sociopolitical influence on the realization of threats is taken into account, and practical mechanisms for providing basic security services based on post-quantum algorithms are also proposed. To provide basic security services in the proposed multi-contour protection system, it is proposed to use post-quantum algorithms – McEliece crypto-code constructions, which provide Perr=10-9–10-12, safe time Tsec=1025–1035 group operations. Within the framework of the proposed approach, the problem of increasing the level of information security has been formalized and further ways of solving it have been determined
{"title":"Development of the sociocyberphysical systems` multi-contour security methodology","authors":"S. Milevskyi, O. Korol, G. Mykytyn, Iryna Lozova, Svetlana Solnyshkova, I. Husarova, Alla Hrebeniuk, A. Vlasov, V. Sukhoteplyi, Dmytro Balagura","doi":"10.15587/1729-4061.2024.298844","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298844","url":null,"abstract":"The constant increase in the number of threats to the security of critical infrastructure objects, which include socio-cyberphysical systems, leads to a decrease in the quality of security services and the level of security of infrastructure elements. The object of research is the process of building a complex system of protection in socio-cyberphysical systems. The imperfection of the mechanisms for ensuring the security of critical infrastructure objects, which include socio-cyberphysical systems, the technological complexity of identifying new security threats necessitates an urgent need for a radical revision of the current approaches to its provision. So, it becomes clear that the development of a new approach to ensuring the security of information resources in socio-cyberphysical systems is needed. The article proposes a new approach to the methodological foundations of building multi-contour information protection systems with internal and external circuits on each of the platforms of socio-cyberphysical systems. This approach is based on a universal classifier of threats, which takes into account not the technical aspect of threats, but also their integration with social engineering methods, their synergy of hybridity. The sociopolitical influence on the realization of threats is taken into account, and practical mechanisms for providing basic security services based on post-quantum algorithms are also proposed. To provide basic security services in the proposed multi-contour protection system, it is proposed to use post-quantum algorithms – McEliece crypto-code constructions, which provide Perr=10-9–10-12, safe time Tsec=1025–1035 group operations. Within the framework of the proposed approach, the problem of increasing the level of information security has been formalized and further ways of solving it have been determined","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298478
A. Neftissov, A. Biloshchytskyi, Y. Andrashko, Oleksandr Kuchanskyi, Volodymyr Vatskel, S. Toxanov, M. Gladka
This paper describes approaches to improving the efficiency of agricultural enterprises. It has been established that the use of technology transfer, in particular, precision farming technologies, makes it possible to enhance the efficiency of agricultural enterprises, in particular, to increase the yield of agricultural crops and, accordingly, to improve the profitability of enterprises. As an example, the activities of agricultural enterprises in the Republic of Kazakhstan were analyzed. The share of agricultural enterprises in the Republic of Kazakhstan that use elements of precision farming technology in their activities was determined. It was established that since 2019, the use of precision farming technologies in the activities of agricultural enterprises in the Republic of Kazakhstan has intensified. At the same time, from 60 to 75 % of enterprises already use elements of precision farming technologies in their activities. Using crop yield data for the past 32 years, estimates of the effectiveness of using precision farming technologies by agro-enterprises in the Republic of Kazakhstan were constructed based on forecasting yield indicators using the linear-weighted moving average method. The efficiency of using precision farming technologies in the activities of agricultural enterprises in the Republic of Kazakhstan in 2022 reached 8.46 %, and the average efficiency for the period 2019–2022 was 4.21 %. Therefore, the use of precision farming technologies makes it possible to improve the validity of decision-making in the management of an agricultural enterprise and to obtain a higher profit from the sale of produced agricultural products for any agricultural enterprise in the world. On average, the results allow us to estimate the possible profit of an agro-enterprise when growing agricultural crops in the case of using precision farming technology
{"title":"Evaluating the effectiveness of precision farming technologies in the activities of agricultural enterprises","authors":"A. Neftissov, A. Biloshchytskyi, Y. Andrashko, Oleksandr Kuchanskyi, Volodymyr Vatskel, S. Toxanov, M. Gladka","doi":"10.15587/1729-4061.2024.298478","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298478","url":null,"abstract":"This paper describes approaches to improving the efficiency of agricultural enterprises. It has been established that the use of technology transfer, in particular, precision farming technologies, makes it possible to enhance the efficiency of agricultural enterprises, in particular, to increase the yield of agricultural crops and, accordingly, to improve the profitability of enterprises. As an example, the activities of agricultural enterprises in the Republic of Kazakhstan were analyzed. The share of agricultural enterprises in the Republic of Kazakhstan that use elements of precision farming technology in their activities was determined. It was established that since 2019, the use of precision farming technologies in the activities of agricultural enterprises in the Republic of Kazakhstan has intensified. At the same time, from 60 to 75 % of enterprises already use elements of precision farming technologies in their activities. Using crop yield data for the past 32 years, estimates of the effectiveness of using precision farming technologies by agro-enterprises in the Republic of Kazakhstan were constructed based on forecasting yield indicators using the linear-weighted moving average method. The efficiency of using precision farming technologies in the activities of agricultural enterprises in the Republic of Kazakhstan in 2022 reached 8.46 %, and the average efficiency for the period 2019–2022 was 4.21 %. Therefore, the use of precision farming technologies makes it possible to improve the validity of decision-making in the management of an agricultural enterprise and to obtain a higher profit from the sale of produced agricultural products for any agricultural enterprise in the world. On average, the results allow us to estimate the possible profit of an agro-enterprise when growing agricultural crops in the case of using precision farming technology","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140421631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298432
Nataliia Staroselska, M. Korchak, Tetyana Ovsiannikova, Tetiana Falalieieva, Oleksandr Ternovyi, Valerii Krainov, V. Mohutova, Liubov Morozova, R. Chudak, R. Mylostyvyi
The object of the research is the oxidation process of rapeseed oil. Rapeseed oil is used for technical purposes, in the chemical and food industries, in particular, in the production of ecological fuel. Vegetable oils are subjected to oxidative deterioration processes, which are intensified under the conditions of access to oxygen, elevated temperatures, etc. Oxidation products worsen the technological properties and complicate the use of oils in chemical reactions. An important task is to improve the technology of oxidative stabilization of rapeseed oil, which is of great industrial importance. The oxidation process of refined deodorized rapeseed oil according to DSTU 8175 (CAS Number 120962-03-0) at a temperature of 110 °C was studied by the method of differential scanning calorimetry. The influence of different ratios of antioxidants (tocopherol, butylhydroxyanisole and butylhydroxytoluene) in the mixture on the oil induction period was determined. The total concentration of the antioxidant mixture in each experiment was 0.02 %. The induction period of the initial oil is 408.48 min. The rational ratios of the components of the antioxidant mixture were determined: tocopherol: butylhydroxyanisole (75:25) %; tocopherol: butylhydroxyanisole: butylhydroxytoluene (66.67:16.67:16.67) %. The corresponding oil induction periods were 579.75 min. and 561.55 min. The physico-chemical indicators of rapeseed oil after 12 months of storage at a temperature of (20±2) °C in its original form and with the addition of the developed antioxidant mixtures were determined. The peroxide value of the oil was 12.5, 4.59, 6.45 ½ O mmol/kg, respectively. The research results allow improving the technology of oxidative stabilization of rapeseed oil at elevated and standard temperatures. This will help to extend the oil shelf life, more efficiently and rationally use the oil in various areas
菜籽油用于技术目的、化工和食品工业，特别是用于生产生态燃料。植物油会经历氧化变质过程，在氧气进入、温度升高等条件下，氧化变质过程会加剧。氧化产物会恶化油的技术特性，使油在化学反应中的使用变得复杂。我们采用差示扫描量热法研究了根据 DSTU 8175 标准（化学文摘社编号 120962-03-0）精炼脱臭菜籽油在 110 °C 温度下的氧化过程。测定了混合物中不同比例的抗氧化剂（生育酚、丁基羟基茴香醚和丁基羟基甲苯）对油诱导期的影响。每次实验中抗氧化剂混合物的总浓度为 0.02%。初始油的诱导期为 408.48 分钟。确定了抗氧化剂混合物成分的合理比例：生育酚：丁基羟基苯甲醚（75:25）%；生育酚：丁基羟基苯甲醚：丁基羟基甲苯（66.67:16.67:16.67）%。在温度为（20±2）°C 的条件下，以原始状态和添加所研制的抗氧化剂混合物的状态贮存 12 个月后，测定了菜籽油的理化指标。油的过氧化值分别为 12.5、4.59、6.45 ½ O mmol/kg。这些研究成果有助于改进菜籽油在高温和标准温度下的氧化稳定技术，从而延长菜籽油的保质期，更有效、更合理地将菜籽油应用于各个领域。
{"title":"Improving the technology of oxidative stabilization of rapeseed oil","authors":"Nataliia Staroselska, M. Korchak, Tetyana Ovsiannikova, Tetiana Falalieieva, Oleksandr Ternovyi, Valerii Krainov, V. Mohutova, Liubov Morozova, R. Chudak, R. Mylostyvyi","doi":"10.15587/1729-4061.2024.298432","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298432","url":null,"abstract":"The object of the research is the oxidation process of rapeseed oil.\u0000Rapeseed oil is used for technical purposes, in the chemical and food industries, in particular, in the production of ecological fuel. Vegetable oils are subjected to oxidative deterioration processes, which are intensified under the conditions of access to oxygen, elevated temperatures, etc. Oxidation products worsen the technological properties and complicate the use of oils in chemical reactions. An important task is to improve the technology of oxidative stabilization of rapeseed oil, which is of great industrial importance.\u0000The oxidation process of refined deodorized rapeseed oil according to DSTU 8175 (CAS Number 120962-03-0) at a temperature of 110 °C was studied by the method of differential scanning calorimetry. The influence of different ratios of antioxidants (tocopherol, butylhydroxyanisole and butylhydroxytoluene) in the mixture on the oil induction period was determined. The total concentration of the antioxidant mixture in each experiment was 0.02 %. The induction period of the initial oil is 408.48 min. The rational ratios of the components of the antioxidant mixture were determined: tocopherol: butylhydroxyanisole (75:25) %; tocopherol: butylhydroxyanisole: butylhydroxytoluene (66.67:16.67:16.67) %. The corresponding oil induction periods were 579.75 min. and 561.55 min.\u0000The physico-chemical indicators of rapeseed oil after 12 months of storage at a temperature of (20±2) °C in its original form and with the addition of the developed antioxidant mixtures were determined. The peroxide value of the oil was 12.5, 4.59, 6.45 ½ O mmol/kg, respectively.\u0000The research results allow improving the technology of oxidative stabilization of rapeseed oil at elevated and standard temperatures. This will help to extend the oil shelf life, more efficiently and rationally use the oil in various areas","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140422642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298599
N. Tanasheva, Gulden Ranova, Amangeldy Satybaldin, A. Dyusembaeva, A. Bakhtybekova, N. Shuyushbayeva, Sh.S. Kyzdarbekova, Indira Sarzhanova, Nurgul Abdirova
The design of wind turbines with a vertical axis of rotation is quite simple, which successfully increases the level of efficiency. Existing vane wind turbines have a shortage of currents in the form of negative torque, and installations operating on the Magnus effect have a low lifting force. In this regard, the development and research of installations operating at speeds from 3 m/s, with combined blades with increased work efficiency is an urgent topic. The object of the study is a wind turbine consisting of a system of rotating cylinders and fixed blades operating at low air flow speeds starting from 3 m/s. Numerical studies were carried out using the Ansys Fluent program and the implemented k-ε turbulence model. A special feature of the work is the combined use of two lifting forces: a cylinder and fixed blades, which made it possible to increase the output aerodynamic parameters. Calculations were performed for incoming flow rates of 3 m/s, 9 m/s, 15 m/s and cylinder rotation speeds of 315 rpm, 550 rpm, 720 rpm. It is determined that the period of change of the moment of forces T is 0.5 m/s, which corresponds to 2 revolutions of the wind wheel per minute. It was found that the cylinder rotation frequency in the range from 315 rpm to 720 rpm does not affect the period of change in the moment of forces, but the amplitude of the moment of forces increases with decreasing rotation frequency. The dependences of the rotation speed of the wind wheel on the velocity of the incoming flow, found by the method of sliding grids and 6DOF, are also obtained. It is determined that the installation begins to make revolutions from 3 m/s, with a positive torque of forces. The field of practical application of the numerical results will be useful for further research of wind turbines with combined blades
{"title":"Identifying some regularities of the aerodynamics around wind turbines with a vertical axis of rotation","authors":"N. Tanasheva, Gulden Ranova, Amangeldy Satybaldin, A. Dyusembaeva, A. Bakhtybekova, N. Shuyushbayeva, Sh.S. Kyzdarbekova, Indira Sarzhanova, Nurgul Abdirova","doi":"10.15587/1729-4061.2024.298599","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298599","url":null,"abstract":"The design of wind turbines with a vertical axis of rotation is quite simple, which successfully increases the level of efficiency. Existing vane wind turbines have a shortage of currents in the form of negative torque, and installations operating on the Magnus effect have a low lifting force. In this regard, the development and research of installations operating at speeds from 3 m/s, with combined blades with increased work efficiency is an urgent topic.\u0000The object of the study is a wind turbine consisting of a system of rotating cylinders and fixed blades operating at low air flow speeds starting from 3 m/s. Numerical studies were carried out using the Ansys Fluent program and the implemented k-ε turbulence model. A special feature of the work is the combined use of two lifting forces: a cylinder and fixed blades, which made it possible to increase the output aerodynamic parameters. Calculations were performed for incoming flow rates of 3 m/s, 9 m/s, 15 m/s and cylinder rotation speeds of 315 rpm, 550 rpm, 720 rpm. It is determined that the period of change of the moment of forces T is 0.5 m/s, which corresponds to 2 revolutions of the wind wheel per minute. It was found that the cylinder rotation frequency in the range from 315 rpm to 720 rpm does not affect the period of change in the moment of forces, but the amplitude of the moment of forces increases with decreasing rotation frequency. The dependences of the rotation speed of the wind wheel on the velocity of the incoming flow, found by the method of sliding grids and 6DOF, are also obtained. It is determined that the installation begins to make revolutions from 3 m/s, with a positive torque of forces. The field of practical application of the numerical results will be useful for further research of wind turbines with combined blades","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140422931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-28DOI: 10.15587/1729-4061.2024.298913
M.G. Murzagaliyeva, N. Ashimkhan, A. Sapiyeva, Gulnur Tleuhanovna Daribayeva
One of the urgent challenges is to clean up industrial wastewater from toxic and heavy metal ions in a more efficient and environmentally friendly way. Bentonite montmorillonite, bentonite red, zeolite and diatomite of the Almaty region were selected as the materials of the study. In this study was investigated the adsorption properties of natural minerals by physico-chemical methods for the sorption treatment of wastewater from Pb+2, Ni+2, Zn+2 ions. X – ray phase analysis determines the chemical composition of the materials studied. The main component of diatomite is SiO2, in zeolite – Laumontite composition Ca4Al8Si16O48·14H2O (51.3 %). The base of bentonites is bedellite – montmorillonite, which has an amorphous structure. The method of atomic absorption spectrometry was used to investigate the sorption of heavy metal ions (Pb+2, Ni+2, Zn+2) by the natural adsorbents under investigation. Bentonites, Mukra and Medium Tentec have the best sorption properties. Here, the content of lead, nickel and zinc ions is reduced by an average of 82–85 %. In the case of diatomite, the ion content of the same metals is reduced by approximately 74–76 %, and for zeolite by 64 %. Generally speaking, the adsorption properties of these minerals are expected to be achieved by the high porosity in the case of diatomite and zeolite or the penetration of ions into the interpackage space between the bentonite layers. Mixing adsorbents, increasing their mass percentages and increasing the mass of the mixture leads to increased efficiency of the degree of cleaning from these ions. In conclusion of the study, natural minerals of the Almaty region have sorption properties that can be used for practical purposes, in particular for wastewater treatment
{"title":"Physico – chemical study of the adsorption properties of natural minerals for sorption treatment of wastewater from Pb+2, Ni+2, Zn+2 ions","authors":"M.G. Murzagaliyeva, N. Ashimkhan, A. Sapiyeva, Gulnur Tleuhanovna Daribayeva","doi":"10.15587/1729-4061.2024.298913","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298913","url":null,"abstract":"One of the urgent challenges is to clean up industrial wastewater from toxic and heavy metal ions in a more efficient and environmentally friendly way.\u0000Bentonite montmorillonite, bentonite red, zeolite and diatomite of the Almaty region were selected as the materials of the study.\u0000In this study was investigated the adsorption properties of natural minerals by physico-chemical methods for the sorption treatment of wastewater from Pb+2, Ni+2, Zn+2 ions.\u0000X – ray phase analysis determines the chemical composition of the materials studied. The main component of diatomite is SiO2, in zeolite – Laumontite composition Ca4Al8Si16O48·14H2O (51.3 %). The base of bentonites is bedellite – montmorillonite, which has an amorphous structure. The method of atomic absorption spectrometry was used to investigate the sorption of heavy metal ions (Pb+2, Ni+2, Zn+2) by the natural adsorbents under investigation. Bentonites, Mukra and Medium Tentec have the best sorption properties. Here, the content of lead, nickel and zinc ions is reduced by an average of 82–85 %. In the case of diatomite, the ion content of the same metals is reduced by approximately 74–76 %, and for zeolite by 64 %. Generally speaking, the adsorption properties of these minerals are expected to be achieved by the high porosity in the case of diatomite and zeolite or the penetration of ions into the interpackage space between the bentonite layers. Mixing adsorbents, increasing their mass percentages and increasing the mass of the mixture leads to increased efficiency of the degree of cleaning from these ions.\u0000In conclusion of the study, natural minerals of the Almaty region have sorption properties that can be used for practical purposes, in particular for wastewater treatment","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140417561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The object of the study is organizational and technical systems. The subject of the study is the decision-making process in the problems of management of organizational and technical systems. A method of increasing the efficiency of decision-making in organizational and technical systems using artificial intelligence is proposed. The research is based on the giant armadillo swarm algorithm to find a solution regarding the state of organizational and technical systems. Giant armadillo agents (GAA) are trained using evolving artificial neural networks, and an advanced genetic algorithm is used to select the best GAA. The method has the following sequence of actions: – input of initial data; – setting GAA on the search plane; – numbering GAA in the swarm; – determining the initial velocity of GAA; – preliminary evaluation of the GAA search area; – classification of food sources for GAA; – sorting the best GAA individuals; – attack on termite mounds by GAA; – digging termite mounds by GAA; – updating GAA positions; – checking for the presence of a GAA predator; – escape and fight against GAA predators; – checking the stop criterion; – training GAA knowledge bases; – determining the amount of necessary computing resources of the intelligent decision support system. The originality of the proposed method lies in setting GAA taking into account the uncertainty of the initial data, advanced procedures of global and local search taking into account the noise degree of data on the state of organizational and technical systems. The method makes it possible to increase the efficiency of data processing at the level of 14–19 % using additional advanced procedures. The proposed method should be used to solve the problems of evaluating complex and dynamic processes
{"title":"Development of a method of increasing the efficiency of decision-making in organizational and technical systems","authors":"Salman Rasheed Owaid, Yurii Zhuravskyi, Oleksandr Lytvynenko, A. Veretnov, D. Sokolovskyi, Ganna Plekhova, Volodymyr Hrinkov, Tetiana Pluhina, Serhii Neronov, Oleksii Dovbenko","doi":"10.15587/1729-4061.2024.298568","DOIUrl":"https://doi.org/10.15587/1729-4061.2024.298568","url":null,"abstract":"The object of the study is organizational and technical systems. The subject of the study is the decision-making process in the problems of management of organizational and technical systems. A method of increasing the efficiency of decision-making in organizational and technical systems using artificial intelligence is proposed. The research is based on the giant armadillo swarm algorithm to find a solution regarding the state of organizational and technical systems. Giant armadillo agents (GAA) are trained using evolving artificial neural networks, and an advanced genetic algorithm is used to select the best GAA. The method has the following sequence of actions:\u0000– input of initial data;\u0000– setting GAA on the search plane;\u0000– numbering GAA in the swarm;\u0000– determining the initial velocity of GAA;\u0000– preliminary evaluation of the GAA search area;\u0000– classification of food sources for GAA;\u0000– sorting the best GAA individuals;\u0000– attack on termite mounds by GAA;\u0000– digging termite mounds by GAA;\u0000– updating GAA positions;\u0000– checking for the presence of a GAA predator;\u0000– escape and fight against GAA predators;\u0000– checking the stop criterion;\u0000– training GAA knowledge bases;\u0000– determining the amount of necessary computing resources of the intelligent decision support system.\u0000The originality of the proposed method lies in setting GAA taking into account the uncertainty of the initial data, advanced procedures of global and local search taking into account the noise degree of data on the state of organizational and technical systems. The method makes it possible to increase the efficiency of data processing at the level of 14–19 % using additional advanced procedures. The proposed method should be used to solve the problems of evaluating complex and dynamic processes","PeriodicalId":11433,"journal":{"name":"Eastern-European Journal of Enterprise Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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