№ 119(5), May, 2016
Public date: 31.05.2016
Archive of journal: Articles count 97, 232 kb
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Description
The article is devoted to the development of a compressor type ozonator. It describes the design of a high-productivity compressor ozone generator, which can be used for industrial decontamination of mixed feeds, water, milk, and in the system of presowing treatment of seeds. This construction allows generating ozone with high concentration to 5 g/m3 at high feed air or oxygen from the compressor station (up to 2000 l/min). The article describes the design of the basic elements of tubular ozone generator, examines the factors influencing the productivity of the ozonator. The proposed mathematical model allows calculating the productivity of the ozonator when considering multiple influencing factors. These factors take into account: the parameters of supply voltage, such as the magnitude and frequency of the supply voltage; the configuration and geometrical parameters of electrodes such as, the area of the electrodes, the configuration of the surface of the electrodes and distance between electrodes; parameters dielectric barrier; and the transported gas parameters such as volume, temperature, pressure and composition. Special attention is paid to the design of the electrodes made of woven wire mesh with mesh sizes from 1.5×1.5 to 2.0×2.0 mm. It is noted, that such electrodes allow obtaining the maximum productivity of an ozonator, and they do not lead to overheating of the dielectric barrier, and do not output down the generator. In the same way, the article presents the results of the mathematical modeling of ozone generator productivity while changing various factors
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IMAGES OF POT PLANTS IN ART, AS A RESOURCE OF INFORMATION ON THE AGRONOMY HISTORY
DescriptionThe article analyzes pot culture as a part of agronomy history. The basic emphasis focuses on plant species diversity, the collection of certain groups of plants and their role in the history of agronomy. The tool of analysis was the visual images of the plants in the paintings of artists of different periods. Earlier, we performed the work on the history of introduction the number of agriculture crops. This approach is a method of visual sketches or notes; it gives a capacious and complete view of the agronomy development, where the illustrations are the paintings. For the analysis, we have created the base of image on the basis on 170 paintings by artists of different periods.The approach used in the work, enables the development of observation, stimulates cognitive function in students and teaches to make comparisons and visual analysis. In the work, on the basis of visual analysis, we show that the spread of flowering plants was conducted very actively in Russia. "Exotic plants" have been firmly established in the Russian farmstead life and became its daily life. Love to plants has no clear social boundaries, everyone has this feeling. Modern approaches are noted in the breeding and preparation of new crops based on tissue culture , genetic engineering, which allow to receive new exotic pot plants, not demanding growing conditions
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Description
Nowadays there is a deficit of irreplaceable and physiologically necessary nutrients in everyday ration to a large extent connected with unfavorable environmental conditions and the increase of morbidity of humans of all ages cause the cute necessity in the creation of functional food that is products with additional functions which are healthy nutritive and physiological characteristics. One of the main demands under their creation is in the positive influence of introduced products on the food value of products because they must be enriched with ingredients which have antioxidant properties. Therefore, nowadays the introduction of functional meat-plant products will promote the effective improvement in the direction of prophylaxis of different diseases. In Russia, the concept of healthy nutrition became a part of state politics. The aim of this politics is the conservation and consolidation of population’s health and the prophylaxis of diseases. In this work, there was considered the technology of the production of meat-plant tinned food of functional purpose enriched with nutrients and intended for preventive human nutrition, for those who are in the conditions of harmful influence of environment and professional activity. There were described the advantages of the given developing, there were recommended the introduced into the product components of functional purpose
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Description
The level of competitiveness of the agricultural sector depends on the effective implementation of the import substitution policy and food security in the region in which all categories of the population at any one time must have physical and economic opportunities needed to get enough and safe food for an active, full and healthy life. In this context, the problem of increasing the competitiveness of regional agriculture in the new economic environment is relevant. Competitiveness characterizes the concentrated expression of the totality of possibilities of managing subjects of agriculture produce and to bring the products (goods, works, services) to the consumer. Solving the problem of increasing the competitiveness of regional agriculture is closely linked to an increase in the effectiveness of the quality management of products, increasing profitability of production, improving the system of state regulation of the agrarian sector of the economy. Principles of creation of an effective mechanism of state regulation and support the competitiveness of the agro-industrial complex include: agro-industrial protectionism; program-targeted regulation and maintenance of the guaranteed state support for agribusiness; efficient use of resources. The priority areas to ensure the competitiveness of regional agriculture are: to create conditions for the development of innovation and investment environment, the improvement of financial and economic state of the industry and agribusiness organizations, improvement of state support of the agrarian sector mechanisms
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ABOUT THE NEED TO CHANGE THE BURDEN STANDARDS FOR PEDAGOGICAL WORK OF FACULTY STAFF
DescriptionThe article reveals the content of pedagogical work activities for teaching staff in the main activities of the Department (academic, educational, methodical, scientific and organizational-methodical work). We have offered a rational standard time for their quality execution, allowing improving the quality of training of university graduates. It is proposed to consider additional classes and consultations in the burden time of teachers, as well as the norms of time for preparation for publishing educational and scientific literature, development of training, methodological, logistical and organizational-methodical work. It is shown, that the participation of teachers in researches and development with the aim of earning money for the University reduces the level of the educational process. To improve the quality of training of students, we have offered a number of key measures that needed to be organized by the Ministry of education and science of the Russian Federation, and also, by employees of the administrative apparatus of universities
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QUANTITATIVE AND QUALITIVE ASSESSMENT OF SEEDS TRAUMATIZING WHILE USING MACHINES
DescriptionIncrease of gross grain collecting and minimization of cost of its production essentially depends on technologies and technical means, which are used while grain crops cultivation. At the same time the existing industrial seed farming and the grain’s production are assumed the multiple mechanical and thermomechanical impacts on grain from working tools of cars and units that leads to weevils’ traumatizing. Grain damage negatively affects its technological and fodder characteristics; seeds’ traumatizing causes the decrease in their sowing and fruitful features. It isn't possible to extract injured seeds from the pile because working tools damage the weevils itself and also there are small differences between damaged and undamaged weevils. It is possible to reduce grain traumatizing while machine preparation by reducing the quantity and extent of mechanical and thermomechanical impacts on weevils, by optimization of technological operations and by controlling the regimes and adjustments of working tools. The work of winnower machines M-819 KAS-10+SBVS-5 and AS- 10+ was researched while developing a technique of complex quantitative and quality standard of machines’ and tools’ influence on weevils’ traumatizing. It was ascertained that on different stages of weevils’ mechanical preparation it get different injuries in quantitative and qualitative expressions. It was offered to estimate the injuring ability of machines by the impact of seeds’ injures influence on its sowing features. Also there was a conception of traumatizing coefficient which includes either quantitative or qualitative debriefing influences of the traumatizing on grains features
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A NEW MATHEMATICAL MODEL FOR OPTIMIZING FRACTURE LENGTH IN THE IRANIAN OIL SAND RESERVOIR
DescriptionCreation of hydraulic fracturing in the physical structure of the reservoir rock is one important way to improve the productivity of oil and gas wells. These artificial channels increase ability of the reservoir rock for conducting hydrocarbons to the wellbore. In this study a new approach has been proposed for optimization of fracture half length in hydraulic fracturing operation. Also, this new method that is a combination of various fracturing geometry models has been proposed for modeling the hydraulic fracturing geometry. We have shown that there is a reasonable agreement between the result of pseudo 3D fracture geometry model and the predicted results from the proposed approach
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THE NECESSITY OF IMPROVING THE SYSTEM OF DEVELOPMENT OF REGULATION OF SMALL AGRARIAN BUSINESS
DescriptionPractice shows that the level of development of small agricultural farms is an important indicator of favorability of the conditions created by government for development of production and rural territories. Conversely, the degree of development of rural areas has an impact on the development of small agricultural entities. It is necessary to increase the independence, motivation, municipal authorities in socioeconomic development of given territories. However, today, there is a relative decrease in the level of support for small businesses. Since 2007, the Support of agriculture in our region has grown almost by three times, but small agrarian business grew only by 34.3%, that is, in fact, observed as a negative trend, when adjusted for inflation. Without a system of state support of small business it is problematic to conduct a correct reproduction of the herd and to increase the volume of industry’s output. Such situation results in: lower rural incomes, especially in private subsidiary farms; the number of jobs, increase of unemployment, social tension in society, and a negative effect on the regional economy. It is necessary to improve the economic mechanism of state support of small businesses, to improve the conditions of lending and investments, to create conditions for increasing production of marketable products and new jobs, to increase rural employment, to improve the system of cooperation in production, processing, storage, transportation and sale of products to small businesses, to improve social infrastructure, to improve the quality of rural life. The authors have developed and offered corrective suggestions for implementation of the regional target program of development of small forms of businesses for 2016- 2020 with the definition of deadlines and funding, by blocks of the organization of competitive production, support for family farms, system of agricultural cooperation, and marketing of commercial products
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SIMULATION OF TURBULENT FLOW IN A CAVITY ON THE NAVIER-STOKES EQUATIONS
01.00.00 Physical-mathematical sciences
DescriptionThe article deals with the numerical solution of the Navier-Stokes equations describing turbulent flow in a rectangle cavity or in a cuboid with one open face at high Reynolds numbers. It is known, that there is a mechanism of turbulent mixing in natural systems, leading to an increase in the viscosity of the continuous medium. In this regard, we suggest methods of regularization of the Navier-Stokes equations, similar to the natural mechanisms of mixing. We proposed the models based on the properties of the turbulent environment. For this we modified the continuity equation taking into account the pressure fluctuations. It is shown that the incompressibility condition is can be violated due to pressure fluctuation even for flows with low Mach numbers. Modification of continuity equation by the introduction of turbulent viscosity allows the regularization of the Navier-Stokes equations to solve the problems with rapidly changing dynamic parameters. It was shown that the modification of the continuity equation taking into account turbulent fluctuations leads to a system of nonlinear equations of parabolic type. A numerical model of turbulent flow in the cavity with the rapid change in the parameters of the main flow developed. Discovered type of instability of the turbulent flow associated with the rapid changes in the main flow velocity. In numerical simulations found that due to the acceleration of the main flow there is the unsteady vortex flow in the cavity, which is characterized by the integral of energy not vanishing with time, vibrations that have a certain period, depending on the turbulent viscosity
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METHODS OF REDUCING SPACE DIMENSION OF STATISTICAL DATA
01.00.00 Physical-mathematical sciences
DescriptionOne of the "points of growth" of applied statistics is methods of reducing the dimension of statistical data. They are increasingly used in the analysis of data in specific applied research, such as sociology. We investigate the most promising methods to reduce the dimensionality. The principal components are one of the most commonly used methods to reduce the dimensionality. For visual analysis of data are often used the projections of original vectors on the plane of the first two principal components. Usually the data structure is clearly visible, highlighted compact clusters of objects and separately allocated vectors. The principal components are one method of factor analysis. The new idea of factor analysis in comparison with the method of principal components is that, based on loads, the factors breaks up into groups. In one group of factors, new factor is combined with a similar impact on the elements of the new basis. Then each group is recommended to leave one representative. Sometimes, instead of the choice of representative by calculation, a new factor that is central to the group in question. Reduced dimension occurs during the transition to the system factors, which are representatives of groups. Other factors are discarded. On the use of distance (proximity measures, indicators of differences) between features and extensive class are based methods of multidimensional scaling. The basic idea of this class of methods is to present each object as point of the geometric space (usually of dimension 1, 2, or 3) whose coordinates are the values of the hidden (latent) factors which combine to adequately describe the object. As an example of the application of probabilistic and statistical modeling and the results of statistics of non-numeric data, we justify the consistency of estimators of the dimension of the data in multidimensional scaling, which are proposed previously by Kruskal from heuristic considerations. We have considered a number of consistent estimations of dimension of models (in regression analysis and in theory of classification). We also give some information about the algorithms for reduce the dimensionality in the automated system-cognitive analysis