Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
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STUDYING THE EFFECT OF SWEETENERS ON RHEOLOGICAL PROPERTIES OF CHOCOLATE MASS
DescriptionChocolate products with reduced calories are becoming increasingly popular among consumers and producers. One method of producing chocolate with low calorie content is some replacement with alternative sucrose sugar substitutes. We have investigated the effect of various bulk sweeteners (maltitol, isomalt and erythritol) with different particle size, divided into three intervals (106-53, 53-38, and 38-20 microns) on the rheological properties of molten chocolate. It was found, that the model of the Herschel-Bulkley is better than others, it describes the real rheological properties of the chocolate mass. It is established, that because of maltitol, it affects the rheological properties of chocolate just as sucrose and thus it may be a good alternative. The use of isomalt causes higher plastic viscosity of the chocolate mass and maltitol improves the fluidity of the chocolate mass, significantly more than other bulk sweeteners. Changing the particle size leads to a change in the plastic viscosity and yield point. Differences in the rheological properties of chocolate with different bulk sugar substitutes have been caused by differences in the volume fraction of solids and the distribution of particle size. When replacing sucrose to improve the rheological properties of the chocolate, we have to select sweeteners with large particle size, but sweeteners particle size should be small enough to result in chocolate with good organoleptic properties
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MODELING DEEP BAR INDUCTION MOTORS FOR SUGAR FACTORY ELECTRICAL POWER SUPPLY SYSTEMS
DescriptionThe article is devoted to solving the urgent task, which is improving the accuracy of transient simulation modes of power supply systems of sugar factories. The material of the article is exploratory in nature, manifested in the fact that we have studied various mathematical models designed for the analysis of symmetric modes of deep bar induction motors. A number of the provisions of article have scientific novelty, which lies in the approach to the choice of the coordinate system for modeling deep bar induction motors. We have formulated the requirements for transient analysis method for deep bar induction motor. We have developed the mathematical models of high-voltage induction motors in different coordinate systems for the analysis of steady-state and transient modes of operation. Based on double-circuit rotor model of induction motor, an analytical expression for the frequency characteristic of the deep bar induction motor is obtained. As an example, we have calculated and presented real and imaginary parts of the frequency characteristic of the induction motor type 2АЗМ-2000 with slip s = 1. The mathematical models of induction motors allow using mathematical apparatus more efficiently to explore different symmetrical modes of engines. The study proposed to use transients in the power supply systems of sugar factories for the analysis. The authors suggest an approach to modeling, which can also be useful for modeling induction generators
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CHRONOLOGICAL STUDY OF CONFIGURATION OF A WATER – BOILED PROTEIN SYSTEM WHEN DRYING
DescriptionThe article presents results of research on drying a slurry consisting of distilled water and finely chopped cooked chicken protein of table eggs. The suspension is placed in a Memmert oven, which has temperature of 60 °C. In the process of removing moisture when drying the slurry of water - boiled protein we examined kinetics of its drying and performed chronological photographing of conformation of the system of water - boiled protein. The final weight of the protein remaining after evaporation, was 0.06 g corresponding to 26% by weight of cooked protein source in an amount of 0.23 g. The analysis of the system appearance including the evaporation of the water showed that the protein was originally white, and this color does not undergo any changes until 35 minutes of drying, i.e. when the main base is water. Upon further drying of the suspension, starting with 40 minutes, boiled protein literally "melts" in the surrounding water residues; and as it is disappearing, becoming more and more transparent. Meanwhile, the forms of the protein are becoming round and transforming into the form of liquid crystals. The final phase of the protein is a solid transparent film
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SYNTHESIS OF A SYSTEM OF OPTIMIZATION OF CONSUMPTION OF NONRENEWABLE RESOURCES
DescriptionThe NP-problem of discrete optimization of consumption of non-renewed resources is considered. The weights of edges of the graph of resources set cost of consumed resources. It is offered to use the transitions of discrete system conditions on the complete graph with number of vertexes, equal to quantity of discrete resources, for the problem decision. The purpose of such system is construction of a chain of the predetermined length and the minimum weight on the complete graph. The problem factor is factorial growth of number of variants of chains on graph at linear growth of quantity of resources. The main idea consists in a use of found statistical regularities of transition ranks of discrete system at construction of chains with the minimum weight on graphs of the any size. Use of ranks allows to abstract from concrete weights of transitions and to find the property inherent optimum. In this article, the structure of discrete system is presented and its functioning in a mode of analysis of ranged decisions is described. Distinctive feature of the presented system is use of the generator of ranks, the generator ranged chains and the statistics block. They are used for definition of distribution of suboptimum decisions. In addition, the article contains the description of structure and functioning of discrete system in a mode of synthesis of suboptimum decisions on the basis of the found distribution of probabilities of local decisions. Novelty of the offered approach to construction of solvers of NP-problems is in using empirical functions from ranks of local decisions to control the search
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THE DEVELOPMENT OF FOOD PRODUCTS FOR PEOPLE ENGAGED IN MENTAL ACTIVITIES
DescriptionRecipe and diet of people engaged in mental activities determine the peculiarities of their lifestyle. It relates to sedentary lifestyle, sitting position, high stress loads. Features of the lifestyle of this population require the application of the fundamental laws of nutrition and a careful calculation of physiological needs in nutrients. Relatively small muscle load and the habit of high calorie food leads to weight gain, obesity and diseases of the cardiovascular system. Based on biomedical research and analysis of respondents’ data, we have formulated basic requirements for the development of biologically safe food products for people engaged in mental work. The article also assesses the chemical composition of the animal and vegetable raw materials grown in the Kuban. We have developed a technology of fish and fish products and meat and cereal canned food for people engaged in mental work. As a result of experimental and analytical studies, we have substantiated the composition of food and medicinal plants for obtaining antioxidant complex. We have also developed a CO2-technology for production of the antioxidant complex
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COMPARATIVE ANALYSIS OF THE VENTILATION MODELS OF THE SUBSTRATE WHEN COMPOSTING
DescriptionIn the article we have performed a comparative analysis of a traditional system of air supply to the bioreactor during the composting process and the developed system with lateral air supply. We have proven to reduce temperature variation of the substrate as a result of the use of the ventilation system by 35%. During the simulation, equal to 1.0 hour, a ventilation system with side air flow provides a reduction of the accumulated degree of heterogeneity of status parameters of the substrate by 58%. Use of the ventilation system with side air flow reduces the duration of technological cycle of composting 7 %. This article was prepared in the framework of the scientific project 16-48-230441 a(R) "Mathematical modeling of the processes occurring in the automated installation for year-round production of organic fertilizers in the conditions of the Krasnodar region", financed by RFBR and administration of the Krasnodar region
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Description
The article deals with the analysis of Russian tourists coming abroad and to Russian resorts, particular, to the Krasnodar region. The criteria of choosing of recreation places is delivered, according to it the assessment of competitiveness of beach rest on the Azov and Black Sea coast is given. The main regional problems of seacoast beach resort development were worked out. The article presents a vast analysis of special problems and limitations, that are involved in groups (financeeconomic, technological and ecological, institutional, marketing). The author gives the complex solution to these problems
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Description
The problems of increasing the motivation of students of organizations of secondary vocational education and higher education to educational and training activities is due to the use of score-rating approach to recording achievements. The article examines factors that have a negative impact on training and outside training activities, such as TV entertainment, online games, social networks. We consider the activities that have a positive impact on the educational and training activities outside, such as volunteer work, scientific work, socially useful activity. We analyze the advantages and disadvantages of traditional approaches to increase the motivation of students on the basis of a three-level scholarships. The article reveals problems of placing information on the ranking of students in online news sites on educational organizations and media stands. The problems associated with the "transparent" scheme of formation of students rated by forming a student's portfolio have been considered as well. We have given a scheme of a fixed valuation of activities of pupils in points and a formula for calculating the scholarships for student achievements in education and trainings, as well as in volunteer activities. An example of the appearance of a prototype automated system for recording pupils' achievements has been presented. The article also shows data on the implementation of the prototype in educational institutions
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THE ROLE OF LAND, WATER AND MINERAL RESOURCES IN THE CONFLICTS IN AFRICA AND THE WAY FORWARD
DescriptionThe scarcity of natural resources has become a serious problem in terms of security in the world. This article examines the role of the limited resources in conflicts in Africa. The main source of conflict is the issue of control of resources and the right to a healthy environment. Here we consider the case of the regional conflicts in the African context. A large number of major rivers in Africa also have been the cause of conflicts between the riparian countries. However, most of these problems have been successfully solved, and in many cases, this process led to the formation of regional blocs for economic and diplomatic cooperation in the region. In addition to inter-State disputes, there are also internal disputes among regions or states within the same country for the control of resources. However, in some cases these regions have developed wellcoordinated approaches to resolving the disputes: either by judicial apportionment, congressional action or based on negotiated compacts. In general, we believe that a careful application of equitable resource-sharing formula to volatile areas is a basic condition for peace and stability in Africa
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MODERN WAYS OF OIL-CONTAMINATED WASTE UTILIZATION FOR THE ELIMINATION OF POLLUTION
DescriptionThe article deals with the problem of eliminating environmental pollution by oil-contaminated waste. It's suggested modern ways of improving technologies for oily waste utilization. The comparative characteristic of the essence, advantages and disadvantages, effectiveness of ways of waste recycling is described. The basic utilization technologies of oil sludge of various origins are emphasized taking into account the aspects of their composition and properties. It's represented the results of a patent search in this area to ensure a high level of new developments. It's characterized the developed technologies for utilization and recycling of oily waste to produce environmentally products of utilization – organic and mineral additives which are suitable for use as secondary material resources