Proceedings of the Voronezh State University of Engineering Technologies最新文献

{"title":"Substantiation of a method for producing sugar during deep processing of beet molasses","authors":"N. G. Kulneva, P. Y. Surin, V. A. Fedoruk, N. A. Matvienko","doi":"10.20914/2310-1202-2022-1-58-65","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-58-65","url":null,"abstract":"When processing sugar beets, the final waste is formed - molasses containing sucrose and other compounds. Under the conditions of traditional technology, further extraction of sucrose from molasses is difficult. The technology of deep processing of molasses using chromatographic separation (desugarization) has been developed and implemented, which allows additional extraction of sucrose. The resulting extract requires further processing at sugar factories. This article is devoted to the choice of a method for processing the extract under the conditions of sugar production. Various options for processing the extract are considered: after the completion of the processing of sugar beet and during the joint processing of beet and extract. You can send molasses to a desugarization station once, work with a partial return of molasses, or carry out continuous processing of molasses obtained in the crystallization department of a sugar refinery by desugarization. Each processing option has its own advantages and disadvantages. The performed numerical analysis shows that processing the extract with a second pass stage will lead to the maximum total sugar recovery. The second most efficient is endless recycling. An improvement over endless recycling in the molasses recycling process is achieved by optimizing the separator settings due to the consistent quality of the processed feed. Endless processing leads to the accumulation of non-sugars, which destabilizes the quality of the molasses and makes it difficult to set up the separator.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86513783","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}

{"title":"The impact of processing on hemp seeds protein complex","authors":"V. I. Uschapovsky, A. A. Goncharova, I. E. Minevich","doi":"10.20914/2310-1202-2022-1-66-72","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-66-72","url":null,"abstract":"Recently, commercial hemp seeds, Cannabis sativa L., have attracted considerable interest in nutritional and industrial research due to their high nutritional value and good digestibility. Hemp seeds are becoming a new source of vegetable protein and the necessary components for maintaining health due to the rich content of protein compounds, vitamins, and unsaturated fatty acids. The effect of processing on the protein complex of low THC hemp seeds was studied in the current study. Standard methods of analysis (determination of protein, fat, moisture) and special methods (determination of the ratio of protein fractions of hemp seeds and products of their processing) were applied in the work. The objects of study were hemp seeds (Surskaya variety) and products of their de-oiling by mechanical and chemical methods. The globulin fraction predominance in the original hemp seeds (69.44%) and in the product obtained by hemp seeds de-oiling with hexane (fine fraction of meal, 80.94%) was revealed. Glutelin fraction (38.98%) prevailed in hemp seed flour obtained by cold pressing. After the hemp seeds processing (pressing, extraction), the ratio of protein fractions (albumin, globulin and glutelin) in the resulting products changed: meal (1:3.2:3.2), fine fraction (0.1:4.7:1) and flour (1.1:1:1.4), in comparison with the initial raw material (1:2.5:0.1). A significant increase in the glutelin fraction: from 2.78 to 43.10 and 38.98%, by mechanical and chemical methods, respectively, and a decrease in the amount of water- and salt-soluble fractions were observed with all processing methods. Researches of the study of the ratio of oilseeds protein fractions are of practical importance for improving healthy foods quality.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74854742","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}

{"title":"Functionalized styrene-butadiene copolymers based on improved metal-alcoholate systems","authors":"A. Firsova, A. Kharitonov, O. Karmanova, A. S. Lynova","doi":"10.20914/2310-1202-2021-4-302-307","DOIUrl":"https://doi.org/10.20914/2310-1202-2021-4-302-307","url":null,"abstract":"A method for preparing functionalized styrene-butadiene copolymers on a new initiating system, which is a modifier consisting of a mixed sodium-calcium alkoxide of oxypropylated aniline dissolved in ?-methylstyrene and n-butyllithium has been developed. It was revealed that the lowered content of calcium ions makes it possible to obtain a modifier without colloidal fine-dispersed sludge, which negatively affects the operation of equipment in the industrial production of rubbers. The high initiation activity on lithium amides promoted a high conversion of monomers and a good stereoregulating ability of the 1.2-unit content of the butadiene part of the copolymer macromolecule, amounting to 66-68 wt%. The addition of a reactive compound to the end of the \"living\" polymer chain, stannous tetrachloride, improves the technological properties estimated by the Mooney viscosity, which increased by 5 units. It was shown on the example of prototypes of rubber mixtures, the polymer base of which was functionalized styrene-butadiene rubbers, that they are characterized by a sufficiently high rate of vulcanization, and in terms of technological, elastic and strength properties, the samples are identical with the foreign analogue NS-616, in terms of abrasion resistance they surpass the imported analogue by 20%, in resistance to crack growth by 36% was shown. The rubber mixture based on functionalized rubber was characterized by better adhesion on ice. The use of functionalized rubbers instead of serial rubber has little effect on tire rolling losses. A slight decrease in tan ? values at 0 °C for rubbers based on functionalized rubbers was noted, which can be compensated for by adjusting their microstructure and requires additional research.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89090141","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}

{"title":"Assessment of the influence of alimentary biocorrectors on the energy efficiency of the nutritional status of adolescent children","authors":"L. A. Albycheva","doi":"10.20914/2310-1202-2021-4-57-62","DOIUrl":"https://doi.org/10.20914/2310-1202-2021-4-57-62","url":null,"abstract":"An assessment of the increase in the efficiency of gas exchange was carried out on the example of students of an engineering university with the daily use of an additive containing food components with known bio-correcting properties: flour of wheat germ cake Ц 45%, sprouted chickpea seeds Ц 15%, dried leaves of japanese kelp Ц 5%, a component of animal origin in the form of whey protein concentrate Ц 35%. The change in the energy efficiency of the nutritional status was assessed based on the analysis of the concentration of carbon dioxide (CO2) and oxygen (O2) in the exhaled gas mixture and the level of hemoglobin oxygenation (SpO2), the values ??of which were recorded before and after daily consumption of the test products for 30 days. The study group of patients consisted of volunteers among first-year students of the Voronezh State University of Engineering Technologies - boys and girls aged 17-18 years. In the course of experimental studies, the subjects showed an increase in the SpO2 level by 0,83% and CO2 by 4,06%, as well as a decrease in the O2 concentration by 2,62% in the exhaled gas mixture. The data obtained indicate an increase in the level of oxygenated hemoglobin in the subjects' blood, accompanied by a shift in the active blood reaction (pH) towards an alkaline medium, which occurs between the alveolar air and the blood of the pulmonary veins and capillaries due to the diffusion of CO2 through the alveolar membrane. An increase in the concentration of CO2 in exhaled air is accompanied by an increase in the efficiency of O2 transport, and also prevents the formation of erythrocyte complexes as a result of changes in the physicochemical properties of the membrane. The data obtained make it possible to state the possibility of an active alimentary effect on the efficiency of gas exchange, and prove the antihypoxant properties of the enrichment additive. The reliability of the experimental data was assessed using the Mann-Whitney test, which confirmed the presence of a positive effect of the components of the enrichment supplement on the human body. The results of the work convincingly prove the role of alimentary factors in increasing the efficiency of the most important functions of the body of adolescents of the older age group, regardless of gender, which naturally leads to an increase in the body's resistance to changes in external and internal influences. The data obtained in the course of research indicate the possibility of classifying the components of the supplement as alimentary biocorrectors that ensure the effectiveness of the process of energy metabolism of the body in adolescents.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72912779","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}

{"title":"Use of object-oriented simulation in solving issues of optimal enterprise management","authors":"M. Lapshina, O. Lukina, D. D. Lapshin","doi":"10.20914/2310-1202-2022-1-288-294","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-288-294","url":null,"abstract":"Modern scientific research in economics cannot be imagined without the use of economic and mathematical models and their subsequent analysis. Foreign economic literature contains a significant proportion of articles of both theoretical and applied nature, dominated by mathematical models used to substantiate the assumptions made and the most accurate calculation of economic efficiency. A number of economists very convincingly confirm that the recognition of any theoretical study of an economic nature is determined by the measure of the mathematical formalization of the problem, the adequacy of the mathematical apparatus used and the effectiveness of the final results obtained as a result of the study. In this regard, the article discusses the urgent problem of developing a mathematical model of optimal enterprise management. The authors propose an approach to the selection of the most appropriate modeling, taking into account the restrictions imposed on the boundary states of the system that describes the economic component of the enterprise. The use of classical mathematical approaches with their subsequent adaptation to modern conditions is given and substantiated..","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"153 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89885132","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}

{"title":"Investigation of the properties of synthetic and biodegradable polymers, with a view to the possibility of their use in the food industry","authors":"O. Ershova, E. Mullina, J. A. Bessonova, K. V. Bagreeva","doi":"10.20914/2310-1202-2022-1-245-251","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-245-251","url":null,"abstract":"The article deals with the actual problem of environmental friendliness of packaging materials used in the food industry. The aim of the work was to study the physical and mechanical characteristics of biodegradable and synthetic polymers, with the aim of updating the replacement of synthetic packaging materials with more environmentally friendly materials. The article discusses the main characteristics of innovative biodegradable materials based on polylactides (PLA). A comparative analysis of the strength and sorption properties of both biodegradable and synthetic polymeric materials is presented. A comparative analysis of the materials under study was carried out according to the following parameters: water absorption, puncture resistance, deformation-strength and thermophysical characteristics. The paper also presents the results of a study of the water-absorbing capacity of the analyzed polymeric materials. The results of tests are presented, which make it possible to establish the temperature-time parameters of the processing of polylactide by the melt method. The data obtained by the DSC method on the establishment of relaxation and phase transitions that occur in the polymer during thermolysis are analyzed. During the experiment, experimental studies of the chemical properties of biodegradable materials based on polylactides (PLA), made in China were carried out. The main advantages and disadvantages of synthetic and natural polymeric materials are considered. In addition, the paper analyzes the environmental aspects of the practical application of the studied polymeric materials. Conclusions are formulated about the possibility and safety of using the presented materials in various branches of the food industry. Based on the results of the experiment, it was found that synthetic polymer materials slightly exceed biopolymer materials in terms of the investigated physical and mechanical parameters, however, given the environmental friendliness and the possibility of complete utilization in natural conditions, this fact does not reduce the relevance of using biopolymers in the food industry. In addition, the analysis of data on the chemical composition of the studied biopolymers based on polylactides (PLA) showed that the decrease in the strength parameters of the presented samples can be neutralized by introducing modifying strengthening and hydrophobizing additives.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80455612","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}

{"title":"The analysis and research of the composition a protein-vitamins product from plant materials","authors":"V. A. Khanturgaeva, I. V. Hamaganova","doi":"10.20914/2310-1202-2022-1-49-57","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-49-57","url":null,"abstract":"According to a new report from the Food and Agriculture Organization of the United Nations (FAO), there is a problem of a shortage of protein-rich foods in the world due to the influence of COVID-19 and other factors. Lack of protein in the body leads to disturbances in the processes in which protein is involved and a decrease in immunity. Since the main protein deficiency is associated with a drop in the rate of manufacturing of products containing animal protein, it is relevant to use modern technologies to create alternatives in the form of plant protein sources. To solve this problem, we have developed a product obtained from cedar oilcake by grinding and then processing it with ethyl alcohol in a microwave installation under vacuum for 5-10 minutes. The article presents results of the study of the chemical composition and substantiates the biological value of the protein-vitamins product. Research of the chemical composition of the developed product showed a high content of essential substances, protein 47%. The analysis of the amino acid composition established the presence of 18 amino acids, nonessential and conditionally essential amino acids were found in an amount of 43%. The indicators of the biological value of the protein of the developed product indicate the completeness and balance of the amino acid composition. This proves the high biological value of the protein contained in the protein-vitamin product. The mineral composition of the developed product is capable of meeting the daily requirement for minerals necessary for the human body by 50%. In the product identified water-soluble vitamins group B and vitamin C. The obtained data indicate the possibility of using a protein-vitamin product as an independent product for the prevention of protein-energy malnutrition, and as a functional additive in food production, to increase their nutritional value.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88676755","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}

{"title":"Specificity of separate dispersed phase particles from flue gas flows by perfo-rated filter barrier","authors":"D. S. Protsko, S. Panov, E. Shipilova, O. M. Belykh, A. Khvostov","doi":"10.20914/2310-1202-2021-4-295-301","DOIUrl":"https://doi.org/10.20914/2310-1202-2021-4-295-301","url":null,"abstract":"The vector of industrial development at the present stage is associated with a further increase in energy needs, which is associated with the modernization of existing and the development of new energy-efficient generating equipment. A significant share in the energy balance is still occupied by power plants that use fuel combustion and have significant environmental costs. The results of a theoretical and experimental study of the mechanisms of trapping flue gas particles of power plants by perforated filter baffles in order to reduce the load of emissions on the atmosphere are presented. Formulas for calculating the trapping coefficient under the action of various particle trapping mechanisms are systematized and proposed. The dominant role of the inertial trapping mechanism (?Stk) at the beginning of the filtration process and the gearing effect (?R) in the subsequent stage is determined. The issues of formation of the sediment layer require taking into account the adhesive properties of materials (parameter T) and the introduction of an effective Stokes coefficient (Stkeff). A special role is noted for increasing the efficiency of deposition of flue gas particles under the action of an electrostatic field (?E). In the future, the obtained research results can be used in the development and design of combined gas cleaning devices using the combined action of filtration and the action of an electrostatic field.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83480251","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}

{"title":"Institutional development of circular economy in Russia and St. Petersburg","authors":"O. Kalchenko, Y. Nurulin, I. Skvortsova","doi":"10.20914/2310-1202-2022-1-275-281","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-275-281","url":null,"abstract":"The term \"circular economy\" appeared relatively recently in Russia. Interest to the circular economy and the number of publications is growing. The concept of circular economy is very closely related to the green economy, bioeconomics, and low-carbon economy, which are based on moving away from fossil fuels and the development of new technologies. However, in Russia, most often circular economy means recycling system. The principles of circular economy are aimed at the economic, social, and environmental well-being of people. Experts identify factors that promote and hinder the development of circular economy in Russia. Issues of sustainable development, circular economy and energy transition are actively discussed by representatives of government, business and science at international and all-Russian forums. The principles of circular economy will allow achieving several Sustainable Development Goals. The circular economy is one of the key factors in achieving carbon-free energy goals. In St. Petersburg, profile committees, centers and associations are actively working in this direction. Consortia of international projects of most programs are formed from partners based on a triple helix approach- representatives of government, business and universities. The international projects of cross–border cooperation programmes \"South-East Finland - Russia\", \"Estonia - Russia\" and the INTERREG Baltic Sea region are considered. Pilot sites are being implemented within the framework of many international projects, with the possibility of further replication of successful experience. The legislative base of Russia and St. Petersburg in the field of circular economy is considered in detail.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81095320","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}

{"title":"Imparting ion-exchange properties to fibrous polycaproamide materials by chemically initiated graft copolymerization","authors":"V. Zhukovskiy, V. Khokhlova, T. S. Filipenko, T. U. Anuschenko","doi":"10.20914/2310-1202-2022-1-232-237","DOIUrl":"https://doi.org/10.20914/2310-1202-2022-1-232-237","url":null,"abstract":"The study of the types and properties of surgical threads, as well as the experience in the production of suture surgical material and its use shows that the most promising for surgical practice are threads with antimicrobial properties. Of the methods for fixing medicinal compounds with chemical bonds for suture materials, the most expedient is their attachment by the reaction of ion-exchange interaction. Since polycaproamide (PCA) practically does not contain functional groups, a preliminary modification stage is required to impart ion-exchange properties to PCA fibrous materials. One of these stages of modification is the process of graft polymerization of methacrylic acid (MAA) in order to create active groups on the fiber, for example, peroxide or hydroperoxide. Modification of chemical fibers by graft copolymerization with inogenic monomers is one of the widespread methods of obtaining fibrous ion exchangers. Principles, new approaches and technologies for imparting ion-exchange properties to fibrous polycaproamide materials by chemically initiated graft copolymerization have been developed. Regularities in the production of fibrous PCA of sorption active materials by chemical initiation by a redox system (Fe2++H2O2) located in a modifying bath, as well as by pre-oxidation of fiber PCA in order to create peroxide and hydroperoxide groups on the fiber, are revealed.","PeriodicalId":20611,"journal":{"name":"Proceedings of the Voronezh State University of Engineering Technologies","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75504551","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}