05.00.00 Technical science
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FUNDAMENTALS OF THE THEORY OF SYNCHRONOUS MACHINES WITH MULTIPLE WINDINGS OF THE STATOR
DescriptionThe article is an attempt to generalize the theory of the mathematical description of synchronous ma-chines with multiple three-phase windings on the sta-tor and arbitrary location in space of the machine. The features of the transformations of coordinates in the mathematical description of the machine are shown
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FEATURES OF ADSORPTION REFINING RAPESEED OIL DIATOMACEOUS ADSORBENTS
DescriptionThe results of the studies of the effectiveness of diatomaceous bleached soil for the adsorption of rapeseed oil impurities are discussed. We have established that a mixture of diatomaceous bleached soil with activated carbon has a high degree of adsorption in relation to the pigments of rapeseed oil
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Description
In the article we consider the features of the analysis of the condition of buildings at incomplete construction in difficult hydrogeological conditions
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FEATURES OF STRUCTURE INFLUENCE FOR WEAR RESISTANCE OF CARBIDE STEEL
DescriptionThe article describes the influence of initial porosity, grain boundaries and ways of getting carbide steel for wear resistance of carbide steel. The generalization of structure influence for wear resistance of carbide steel is presented
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THE CHOICE OF THE GENERATOR AND ELECTRICITY STABILIZATION FOR SMALL HYDROPOWER PLANTS
DescriptionThe article analyzes the main characteristics of the electricity generators to use them as a part of small hydroelectric power plants. It is shown, that contactless asynchronous generators in comparison with synchronous generators and DC generators have improved their operational and technical characteristics, and above all, their reliability and performance efficiency. We have shown graphic dependences of the cost and the weight of power generators. It is proposed using direct frequency converter as a stabilizer of parameters of asynchronous generator of electricity, used as a source of electricity for small hydropower plants. The article explains the features of the work and the choice of parameters for generators, working together with the direct frequency converters. The authors have revealed some aspects of the work of direct frequency converters with natural commutation and with adjustable phase angle, including their advantages and disadvantages. The article also presents block diagrams for small hydroelectric power plants, made with the help of asynchronous generators and direct frequency converters
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THE PECULIARITIES OF GRAIN DEFORMATION BY CHOPPERS WORKING PARTS
DescriptionIn this article we have given the description of grain deformation under grinding according to its visco-elastic peculiarities. The relations of time, deformation rate, dynamic coefficient and geometric parameters of the working disks having original design have been shown
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FEATURES OF KRIOCONSERVATION AND KRIOSEPARATION OF RAW FOOD MATERIAL
DescriptionIn this article, kriotechnologies on examples of kri-oconservation and krioseparation of agricultural raw products were reviewed
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FEATURES OF MODELING OF TECHNOLOGICAL OPERATIONS OF AGRICULTURAL RAW MATERIALS PROCESSING
DescriptionThe ways of improving the work of food enterprises during processing of agricultural raw materials on the basis of a system analysis of the durations of technological operations are considered. The basic mathematical models of technological processes have been analyzed and the possibility of using unified technological operations to predict the time of completion of work has been shown for processing various pairs of raw materials. It is established that the construction of mathematical models of technological processes of processing of agricultural raw materials should be based on using the potential of transfer of the target component between isopotential surfaces. This allows not only to unify the created models of technological processes, but also to significantly increase their extrapolating ability to estimate the durations of technological operations
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FEATURES OF SUBSTANTIATION OF MEANS FOR ANTIEROSION PROCESSING OF SOILS
DescriptionIn the article, main principles and methodical bases of the complex analysis of actions for research of influence of influences on soil subject to erosion are stated at cultivation of agricultural crops for the purpose of preservation and increase of its fertility
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FEATURES OF APPLICATION OF METHODS OF MULTICRITERIA OPTIMIZATION IN THE SPHERE OF PUBLIC CATERING
DescriptionThe foodservice industry plays an increasingly important role in modern society and every person. This is achieved primarily due to the changing technologies of food processing, development of communications, the means of delivery of products and raw materials, the intensification of many industrial processes. Catering is one of the most important socio-economic components of the level of development of society. The production process consists of the partial tasks of providing, storing, manufacture, sale, distribution, financing, optimization of the warehouse, personnel training and the introduction of new technologies and management. The aim of the study is determination of methodology of optimization of procurement activities in the field of restaurant business, using mathematical programming methods. In catering should pay special attention to the costs of procurement. When choosing a method of solution you need to consider the shelf life of products purchased, calculate the number of them required for dishes and many other important criteria. Today there are thousands of solutions to the optimization problems of planning and management, but many of them also have a number of disadvantages, for example, do not cover all aspects of the subject area, neither provide complete information