Don state agrarian University
Author list of organization
List of articles written by the authors of the organization
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Description
Today, the Russian agriculture is facing food market saturation task by domestic quality products in sufficient quantities for the needs of the population. At the same time healthy nutriment is provided, according to doctors and scientists, by vegetables, which must be present in the diet of a healthy person. In this regard, a big role is assigned to the covered ground crop production, normal functioning of which allows to supply shops and markets with vegetables throughout the year. For the formation of the necessary environment inside the greenhouse promoting normal plants growth, the main role is played by the solar radiation penetrating into the greenhouse through the transparent enclosure and creating necessary light and temperature and humidity regime. Comparison and analysis of the main cover and light-transmitting materials (film, glass, polycarbonate) characteristics revealed polycarbonate to be the basic material today, light transmitting characteristics study of which this article deals with. As a research method, molecular optical spectroscopy was applied. In order to study there has been selected waveband with their length value from the 610 to 700 nm, which spans exactly the shortwave part of the solar radiation spectrum, which is necessary for the proper implementation of the plants photosynthesis in artificial rearing conditions. After analyzing the measurements results it can be said that studied "KARBOGLASS AGRO" polycarbonate samples, despite the substantially greater thickness in comparison with for example plastic film that is widely used in the old fashioned way, are characterized by higher value of light-transmitting ability for light wavelength values passing through the material - respectively of 79-80,4% and 75,4-77%. Light transmission of "KARBOGLASS AGRO" cellular polycarbonate is at 5 ± 1% higher than of other traditional materials. Among the studied coating materials for covered ground facilities and due to the research results of their light-transmitting capacity, today cellular polycarbonate is of undoubted advantage
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ACTIVITIES FOR FORMATION OF THE DEVELOPMENT STRATEGY OF A BANK IN THE SPHERE OF INDIVIDUAL CAR LOANS
DescriptionThe article discusses the prospects of development of crediting in the Russian federation; the author analyzes the important reasons for the increased costs of cars, as inflation and refinancing rate in Russia and the United States. This article also studied the dynamics of sales of cars on credit in recent years, the terms of the car loan program called “Buy back”. In addition, the calculation of economic efficiency in the changing conditions of early repayment of a classic car loan, implementation of Buy back program, and the efficiency of implementation of project proposals
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COMPARATIVE ANALYSIS OF THE DE-FORMATION IN TIRES 30.5-32 WITH A DIF-FERENT INTERNAL STRUCTURE
05.20.00 Processes and machines of agroengineering systems
DescriptionThe objective of the research was to study the patterns of deformation with the different internal structure in a tire envelope with the standard size of 30.5-32 in propulsion units for modern mobile farm vehicles. The research method is experimental with the use of «a tire tester» and specially developed devices for determining the deformations of the tire envelope concerning the rim in circular and radial directions. Output indicators of a wheel with the pneumatic tire are determined by the ability of the tire to be deformed so that at small hysteresis losses in the rubber-cord envelope the largest area of the contact with a substructure have been created. This circumstance has special significance when developing the tires for mobile farm vehicles with the high power saturation, the patterns of deformation of which are poorly studied now. The analysis of the carried out experimental researches has shown the expediency of application of the experimental tires with the same standard size, offered in the work, on the propulsion units of the mobile farm vehicles instead of diagonal and radial tires. The rolling resistance of the experimental tires 30.5E-32 is lower than the rolling resistance of serially produced tires, and the developed area of contact is higher and that provides the decrease in the condensing impact on the soil
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Description
The article provides a convincing argument for the preference of wool and fur products over artificial and synthetic textile fibers. It is noted that artificial fibers and synthetics have negative ionization, while natural wool has positive ionization. It is emphasized that negative ionization is far from harmless to humans. The analysis of the state of sheep breeding in the Russian Federation is given and this industry in the Rostov region is characterized against this background. The data on the number and productivity of sheep of the main age and sex groups, the production of young animals per one hundred ewes are presented. The characteristic of tribal resources of the country and region is given. The breeding base of the industry in the Russian Federation is represented by 205 breeding organizations, including 3 breeding and genetic centers, 44 breeding plants, 145 breeding reproducers and 13 gene pool farms, which contain 1389.8 thousand sheep (39.0 % of their total number in agricultural organizations and 6.6 % of the sheep population in farms of all categories), including 904.7 thousand Queens (35.0 and 6.2%, respectively). The breeding base of the Rostov region has eleven farms, of which 6 breeding plants for such breeds as the Soviet Merino and salskaya and 5 breeding reproducers. In addition to these breed resources, there are breeding reproducers for the qigai and edilbaev breeds in the region. Total number of breeding sheep in the region is almost 44 thousand. The article indicates main problems in the development of the industry and ways and means to solve them
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06.00.00 Agricultural sciences
DescriptionThe steady development of modern pig farming dictates the need for new priorities, opportunities and requirements, such as reducing harmful environmental impacts, more efficient use of resources, and provision of comfortable conditions for the pig housing. The creation of an appropriate ITS BAT in the branch will optimize the activity of agricultural pig breeding enterprises due to the transition to performance of requirements based on BAT technological parameters, to solve the problem of energy efficiency, import substitution and increase of competitiveness. Their integration will have an effect not only on improving the ecological state of the environment, but also on the economy of agricultural enterprises providing a new approach to agricultural activity
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ANALYSIS METHODS TO INCREASE THE CHARGING VOLTAGE OF THE ALTERNATOR
05.20.00 Processes and machines of agroengineering systems
DescriptionThe article considers the problem of insufficient charging voltage during the joint operation of the battery and alternator. A comparative analysis of the proposed ways of increasing the charging voltage of the generator
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FACTOR ENVIRONMENT OF THE DEVELOPMENT OF THE INDUSTRIES SECTOR DEPARTMENTS
DescriptionIndustrial policy is a set of organizational and economic regulators to improve the technological, organizational and institutional infrastructure level, allowing stimulating industrial activity. There are economic instruments that focus on creating a favorable economic environment for the industry; information and communication tools based on the provision of information and advice to industry on the basis of regular monitoring of production, market–tactical, legal and regulatory processes; institutionally–in–law measures that are aimed at creating an effective and adequate regulatory framework and effective legal protection. We have highlighted a group of preselected based on the analysis and systematization of scientific sources of positive («catalyst») and negative (respectively – «inhibitors») factors, which are structured by us on several subgroups: the factors nature of globalization; macro factors; organizational and economic factors; territorial and sectoral factors (factors of specialization); social factors; technical and technological factors. We have attempted to outline the most important elements of the environment factor, the totality of which determines the level and nature of the development of the industrial sector of the economy, as well as the specifics of the required content of the relevant industrial policies. Consideration of the above factors has allowed us to identify some of the contradictions in the process of industrial development. Their understanding of the formulation and in the context of the resolution of an opportunistic nature of processes of formation and development of industrial potential, industrial production may be the conceptual basis for the development of proposals for improving the incentives for industrial growth mechanisms, including the use of information tools
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Description
The article presents a computer program, which define automobile transport demand for the transport service of harvesters in the grain harvesting process. The program has a simple and intuitive user interface, a flexible setting system. It allows to change the source data for needs everything agricultural companies. It doesn’t require an installation and it can function in everything operation systems, which is fitted for Microsoft office applications acting. It doesn’t require a special studying or deep knowing in a mathematical statistic for using. Everyone specialist can use the program in an agricultural enterprise. The program considers distribution laws of stochastic parts of the grain harvesting process. These process features are important to consider due to using of determination values give very rough results. If there are mistakes in the structure design of the harvesting-transport complex then there are nonproductive machines downtimes or the harvest losing. Using the program gives better organization of the transport service in the grain harvesting process, and it can give the economical effect. It is especially important in modern competitive conditions at the worldwide market of agricultural products and also at the interior market with consideration of external economical sanctions and with consideration of the declared import replacement course. The successful work of agricultural enterprises defines the country's food security and it turns down the oil dependency of the Russian economy
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05.20.00 Processes and machines of agroengineering systems
DescriptionThe aim of the work is to establish rational parameters on the basis of analytical and experimental research, in terms of obtaining the maximum performance of the unit based on a class 5 tractor, an automatic gear shift system. We have proposed a device for automatic gear shifting, in which the pressure of the working fluid in the pneumatic-hydraulic accumulator installed in the power transmission of the tractor of the elastic-damping mechanism, equivalent to the engine torque, was used as an input signal. The task of optimizing the tracking device and the actuator of the automatic shift system is the definition based on the theory of automatic regulation of the rational flow cross section of the damper throttle and the time delay of the system response to ensure the input signal with the necessary filtering in frequency and phase. The study presents the results of the tests carried out under laboratory conditions, which showed that the automatic gear shift system provides gear shifting at an external load frequency in the range from 0 to 0.24 s-1, direct assessments of the quality of the automatic gear shift system: oscillation (0), overshoot (0%) and time of the transition process (2...4 s), meet the requirements for their work. The analysis of the results obtained in experimental studies showed that the productivity of the machine-tractor plowing unit with a class 5 tractor-model equipped with the developed system of automatic gear change is higher by 10.6%, and the specific fuel consumption is 8.1% lower compared to the serial version
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06.00.00 Agricultural sciences
DescriptionThe article describes the evaluation of reproductive, fattening and meat qualities of pigs of purebred large white breed (KB), crossbred ewes, derived from crosses KB sows with boars of steppe type (ST) CM-1 and three-pedigree animals, obtained by crossing crossbred ewes KB x ST with imported boars of specialized meat breeds, such as Landrace (L) Duroc (D) and pietrain (P). We have studied qualities such as prolificacy, milk yield, live weight of the nest, the average weight of one Piglet, the safety of the offspring to weaning, maturity, which is closely associated with average daily gain in live weight, meat content of carcasses, their linear dimensions, meat productivity, the amount of kidney fat, weight of carcasses of animals of the experimental groups, carcass yield