Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
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STUDY ON LONG-TERM STRENGTH OF BRITTLE SOLIDS
DescriptionConsidered theory of termofluktuacion strength of solids. Formulas for predicting long-term strength limits. Set the value of a safe low voltage of compression depends on the physical and mechanical material constants. For a number of technical glass received the numerical estimation of compressive stresses safety.
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RESEARCH AND MODERNIZATION OF CRUSHING AND SORTING EQUIPMENT OF SAND AND SAND-GRAVEL MIXTURE
DescriptionThe object of studying was CMD-108 crusher. The aim of this scientific article is studying kinetic and dynamic parameters of crusher operating devices. As a tool of studying there were used methods of mathematic analysis, theoretic mechanics and physics. As a result of theoretic studies there were defined speeds of various points of the crusher operating devices as well as there were obtained the values of dynamic loads on them and given recommendations on optimization of the crusher operating conditions and its designs. There was also determined an optimum zone of the material crushing from the viewpoint of operating life of the hinged joints of movable jaw enabling to reduce to minimum dynamic impact components of the reactions of the supporting joints of the movable jaw which increases their operating life
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STUDYING CONFORMATIONAL REARRANGEMENTS OF PROTEIN WHEN DRYING
DescriptionThe article gives a review and the experimental data on the nutritional value of eggs protein comprising protein, carbohydrates, minerals and amino acids. Metabolism, the structure and function of each cell, as well as external and internal protective functions are defined by proteins. We consider the study of functions of trace elements found in significant numbers in the eggs, which contribute to health: vitamin D, vitamin B12, choline, folic acid, selenium, lutein and zeaxanthin. The high content of egg protein contributes to greater satiety, weight loss and eye health. We present experimental data on the amino acid composition of the protein and experiments of drying a cooked egg white, placed in a Petri dish. After 10 minutes of drying, the weight of the protein did not change and amounted to 0.1 g, which is 16% of the weight of the original white protein. The photo shows that the protein is lost during drying white and became transparent, and protein grains look like "melted" and partially connected with each other. The data obtained can be used for understanding the operation of the biological process of protein in vivo
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RESEARCH METHODS OF WATER PURIFICATION FROM POLLUTION WITH PETROLEUM AND PETROLEUM PRODUCTS
DescriptionThis article provides an overview of the currently existing methods of purification of waters from pollution with petroleum and petroleum products. The most popular cleaning ways and new emerging technologies are considered. For each method of combating with petroleum pollution the circumstances and the factors are given, under which the application of this method is the most efficient and cost-effective. The article briefly describes the technology of each method, and its main strengths and weaknesses, particularly the use and quality of water purification
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Description
We have presented a table of analogues of mechanical and electrical quantities of a thermal power plant, which shows the relation between the useful power of the engine and mechanical efficiency, as well as the relationship between engine parameters and regime of its operation; we have also developed an electro-mechanical analogy, which helped to get the expressions linking the useful engine power with shaft speed, engine performance, coefficient of mechanical resistance and mechanical efficiency with speed, coefficient of drag and engine performance. Similar expressions were obtained for the relations of these variables with other sets of parameters. The article also shows corresponding graphs. The expressions for the maximum net power and corresponding speed of rotation was found. Thus, the efficiency isЅ. It is shown that in larger (compared with the extreme) speed, the mode is less efficient than with the smaller, for the same useful power. A method is presented to measure the important characteristics of the finished engine – motor operation and its rotational drag coefficient used in the resulting expressions
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RESEARCH OF FERMENTATION INULIN IN THE MANUFACTURE FRUCTOSE-GLUCOSE SYRUP
DescriptionIn the article we have investigated the variation mass proportion of reducing sugars in the extracts in hydrolysis of inulin. The influence of temperature, pH and substrate hydrolysis time on the activity of enzyme preparation "Biobar K-1." We have also determined the optimal technological parameters of the process
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THE RESEARCH OF THE REAL SYSTEMS OF THE PROCESS OF CHOICE THE KNOWLEDGE FROM THE AREA OF KNOWLEDGE
DescriptionWe have done the research of the possible connections in the real system of the process of choice the knowledge from the area of knowledge. It has been identified dependence the number of the straight con-nections in this system from the number of elements in the system. For this it was used an example to solve a particular scientific problem - the choosing the required method of optimization from the variety of optimization methods. In the real system of the process of choice the knowledge from the area of knowledge have been identified and researched various connections – the straight and reverse connections, the connection of generation and structural connections, the functioning connections. It became evident, as these connections are formed from the straight and reverse connections in the real system. For some connections were obtained quantitative relationships
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STUDY OF SORPTION PROPERTIES OF FILTER MATERIALS
DescriptionPresent article is devoted to research of sorption properties of various filtering materials. The various types of filters, such as fabric, frame, granular filters are considered. The principles of work of each type of filters, feature and difference them from each other are considered. The conditions of their application are investigated. Process of filtering through a layer of granular loading also is described. The physicochemical parameters of some granular materials including sand, hydroanthracite-Р, granite road metal, volcanic tuffs, and expanded vermiculite are given. The comparison of oil capacity of some materials is considered at their use as a filtering material and oil collectors. We have described sorption features of activated carbon, used as a filtering material for clearing waters of petroleum and petroleum. The article has a conclusion about their prospects and the efficiency of application when fighting with petroleum pollutions
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Description
The article gives results of research of the process of abrasive wear of samples made of Steel 45, U10 and with applied composite surface layer "nickelmulticomponent material with shape memory effect (SME) based on TiNi". For the tests we have chosen TiNiZr, which is in the martensite state and TiNiHfCu, which is in the austenitic state at the test temperature. The formation of the surface layer was carried out by high-speed gas-flame deposition in a protective atmosphere of argon. In the wear test, Al2O3 corundum powder was used as an abrasive. It is shown that the wear rate of samples with a composite surface layer of multicomponent materials with an SME is significantly reduced in comparison with the base, which is explained by reversible phase transformations of the surface layer with an SME. After carrying out the additional surface plastic deformation operation (SPD), the resistance of the laminated composition to abrasion wear is greatly enhanced, due to the reinforcing effect of the SPD. It is recommended for products working in conditions of abrasive wear and high temperatures to use the complex technology of formation of the surface composition "steel-nickel-material with high-temperature EPF", including preparation of the surface of the substrate and the deposited material, VGN in the protective atmosphere of argon, followed by SPD
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Description
In this article, the software that allows determining the ranges of deviations of a motor anchor chain current and angular velocity deviations of a DC electric drive with a thyristor converter in the continuous currents mode has been presented