05.00.00 Technical science
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Description
Based on the analysis of domestic and foreign scientific and patent literature, possible options to reduce weight of electro technical steel in magnetic circuits of electrical machines are explored. A search for the best options for the manufacture of magnetic induction motors stators technology aimed at improving the utilization of electrical steel and improving the energy performance of electric machines is carried out. All the variants are described and illustrated in detail in the drawings. It is pointed out the advantages and disadvantages of each method of manufacturing magnetic wires and the reasons why certain suggestions of technology of manufacturing magnetic circuits have not been implemented in mass production. The main indicators characterizing the manufacturability of constructive decisions are recommended. Economic indicators have been put in the basis of the choice of the optimal variant while designing the electrical machine. An optimal variant should be considered the variant in which all the technical requirements at lowest total cost are met. The latter should be understood not only the cost of materials and machine manufacturers, but also the cost of operation. The dependence of the energy performance of motors with modular designs of stators from the manufacturing technology is pointed out. The existing technology of the most mass electric motors series production, the following disadvantages are typical: low coefficient of utilization of electro technical steel; high specific material capacity, the cost of technology and labor intensity of production; low labour productivity and level of automation of technological process. Due to the fact that the possibilities of increasing of the machines’ specific weight characteristics due to the usage of new magnetic and dielectric materials are exhausted, it is advisable to change the technology of electric motors production, moving away from the traditional design
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ANALYSIS OF TECHNOLOGIES AND TECH-NIQUES FOR PROCESSING PIG MANURE
DescriptionThe article presents the analysis of technologies for processing of liquid pig manure and manure runoffs. We have also given an analysis of the technical means of pig waste treatment and shown the direction of its improvement
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ANALYSIS OF TECHNOLOGICAL OPERATIONS OF WOODEN CHIPS MANUFACTURING
DescriptionThe article deals with the issues connected with pulpwood barking and chipping in chippers and wood chip screening according to its size. The authors consider structural and technological factors influencing the quality of the product and determine the tasks for future research of chip production operations at pulp and paper mills. The review and the comparative analysis of the most common equipment used for chip production at pulp and paper mills in Russia are submitted
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THE ANALYSIS OF THE TECHNOLOGICAL SCHEME OF WORK OF THE DON STURGEON FACTORY
DescriptionIn the article the technological scheme of the Don sturgeon factory is resulted. Results of natural researches of constructions of the Don sturgeon factory are yielded.
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ANALYSIS OF TRANSPORT STRUCTURE OF ROAD CONSTRUCTION COMPANIES IN SOUTH RUSSIA
DescriptionThe modern state of the territorial road system in South Russia is analyzed in the article. It considers some districts of the Rostov region, the Krasnodar region and the Stavropol region, which have roads with inappropriate technical parameters, and some districts, which don’t have paved roads for transport connection localities. Road service is a function of road construction companies. Numbers of vehicles in companies participating in the technological process of prepare, delivery and asphalting don’t match the amount of work. Therefore, the article analyzes the transport structure of road construction companies in the most problem districts of the Krasnodar region, the Stavropol region and the Rostov region. On basis of data on providing the companies with vehicles and length of roads the closeness of the relationship is defined which is estimated with the correlation coefficient. The road construction company with the best coordination of the delivery power, the number of vehicles for preparation, transportation and asphalting, and the length of roads is identified. The optimal coefficient of providing every hundred kilometers with rolling stock for service is defined as the analysis result
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Description
This article has examined the signs by which you can group all the technical means to collect information about the interaction of termobarometrical underground oil and gas facilities with the environment. The analysis showed, that despite the long history and variety of instruments for measuring pressure and temperature, there is a small set of tools for measuring deep inside the well bore, we know only a few works on the casing tube inserted into special tubes with tensometers placed on them to measure the mechanical deformations, axial forces and temperature, and only a few details about the individual experimental studies of total pressure at the borehole wall and the temperature. Unknown devices to measure except in the casing annulus pressure of the total pressure generated by a separate solid and liquid (gas) phases of the environment
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ANALYSIS OF IMPACT RESISTANCE OF CHAIN ACCORDING TO SPROCKET LUG PROFILE
DescriptionThe possibility of using involute sprockets, more technologically advanced in manufacturing, compared with sprockets with straight, convex-concave profile of the lug on the criterion shock resistance circuit, the maximum permissible speed of the drive sprocket for bush roller chain drives and gears with a toothed chain. The comparative analysis of researches of operation of roller and tooth chain gearings with various steps and types of profiles of sprockets showed that in all cases with increase in a step of a chain the coefficient of speed of blow increases, and the increase in number of lugs at sprockets reduces the speed of blow of the hinge about sprockets tooth. Value of coefficient of speed of blow for couple an evolvent sprockets - a gear chain is much less than value of coefficient of speed of blow for couple a plug-roller chain –sprockets of any profile. Less noise during the work of tooth chain gearings is due to evolvent sprockets. As a result of researches it is established that on kinetic energy of impact of sprockets and the hinge of a chain, sprockets with an evolvent profile can be applied on an equal basis with the sprockets having concave-convex or rectilinear profiles of lugs. Respectively, evolvent sprockets can be used both in chain transfers with roller and with gear chains
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Description
The results of theoretical studies presented in this article is intended to familiarize with perspective direction of improving quality of work potato harvesters by improving the working bodies of separation
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Description
In the article, we present the analysis and improvement of existing methodologies for assessing the intelligence factor, taking into account its use of the Internet on a regular basis. Today, the use of the Internet in our daily activities and tasks become practice that is more common. The Internet has become a popular and most frequently used means of obtaining information quickly and in large volume. The authors suggested the presence of the Internet and its impact on the everyday use of psychological and intellectual life of the people that can be recorded because of user IQ scores. It is suggested here also gets its development in the search for and analysis of system models, allowing determining the numerical values of the parameters. Specifically, it is proposed to use a large variety of statistical data to clarify the unknown parameters that determine the levels of human intelligence, taking into account the impact of the Internet. These statistics include information such as the number of people with higher education, the number of Internet users, the degree of the Internet penetration in society, the most typical tasks that use the Internet users, and others. For the processing and analysis of the test statistics in the work proposed to use tools data mining, ie, data mining. We have also considered the most typical approaches Data mining, applied in similar research areas. We have analyzed what specific principles and methods can best approach to solving the problems of intelligence assessment indicators. The result of the article was a number of conclusions, in particular, the feasibility of applying clustering to analyze data in the field. Also, in certain cases, we provided the use of Kohonen neural network in the vector quantization network format. Methods: analysis of scientific literature and online sources of information on the current level in the field of IQ research; modeling; Methods systematization (tabular calculations and compilation); Experiment (real human test data). Methodological bases of research: a systematic approach (considering IQ in the form of a functional multi-component dependencies), probabilistic and statistical approach (provides guidance for constructing mathematical models linking together IQ and the influence exerted on it using the Internet, and to assess the reliability of a computer program ) qualimetric approach (determines the need multicriterion diagnostic influence of factors on the level of intelligence)
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PERFORMANCE ANALYSIS OF ELECTRIC TECHNOLOGIES IN AGRICULTURAL PRODUCTION
DescriptionThis article presents issues related to the use of electric technologies in agricultural production. The work contains the results of theoretical and practical application of ozone in agriculture