№ 114(10), December, 2015
Public date: 30.12.2015
Archive of journal: Articles count 111, 292 kb
-
Description
The article discusses different types of drive axles of all-wheel drive machine. It is shown that if blocked drive of driving axle easy, it is able to provide the best traction drive qualities of the all-wheel car, if compensation of kinematic mismatch in movement of front and rear wheels. The article provides analysis of the causes of kinematic mismatch and its consequences. The analysis was given for the existing methods to reduce negative influence of kinematic discrepancy on the work of the four-wheel drive wheeled machine in locked mode. The method of reduction of kinematic mismatch by regulations of the air pressure in the tires of the wheels with one-time control of the leading moments on the axes was suggested. We show the relationship between the difference of kinematic radii of the wheels of different axles and the difference of the moments leading to them. The algorithm and description for the system of automatic control of air pressure in the tire, which realizes the proposed method, were presented. We have described experimental methods of determining the energy losses evaluation from kinematic mismatch when moving all-wheel drive machine. The article presents the results of the this assessment in relation to the agricultural wheel tractor of class 5 moving at different substructures
-
Description
The article substantiates the necessity of the intensifying institutional reforms in AIC of the Krasnodar region for the purpose of development the regional innovation environment. It is proved, that the efficiency of innovative activities is possible in the agrarian sector of the economy in effective state regulation of organizational and economic mechanisms of innovation processes, to generate adapted innovative infrastructure. The Institutional modernization supposes accretion of the relationships government and business against to the development of investment processes, improved management efficiency and its activities creation for innovation infrastructure in agriculture. The analysis conducted has shown that the favorable investment climate is achieved in the Krasnodar region by maintaining political stability and predictability, and also the implementation of a policy directed to the transformation of market relations, directed the creation and implementation of mechanisms import substitution and development of rural areas actively. The institutional environment should be considered as a basic component of innovative development of agrarian sector economy in the region. The institutional environment grouping of innovative development AIC subjects to the influence of socioeconomic, political, institutional, demographic, historical and geographical factors. The process of innovative development agrarian sector does not come short of potential opportunities the region. Inter alia the main factors impeding of the development innovations in the regional AIC can be identified: the high production and financial risks, the low demand for innovative products and services, the high cost of innovations, the lack of personnel able to develop innovative production technologies, the own sources of funding for the projects have not been found. To enable of innovation activity in the regional AIC on the basis institutional reforms it is necessary: to maximize the interaction between federal, regional and local levels of government; be focused on the selection strategic priorities of agrarian sphere innovative development in the region; to create a set conditions for the technical and technological modernization of the sector, allowing to generate and develop innovations in agriculture; to amend the state innovation policy in the agrarian sector alone the need of implementation mechanisms of import substitution, the rural development and the achievement of competitiveness agricultural production
-
CHALLENGES AND TECHNICAL SOLUTIONS OF USING HIGH-PERFORMANCE TRANSPORT OF AGRICULTURAL MACHINERY
DescriptionMaterial and technical resources form a large part of the costs in agricultural production and determine the level of intensity of agriculture, productivity and competitiveness of the industry. The most important role in agricultural production is played by transport operation, from productivity and quality of which directly depends the volume and the grade of final products. More preferable is tractor transport, particularly for on-farm transport, taking into account the impact of navigation systems on the ground. Continuous growth in the saturation of tractors carried out around the world, improves the performance of tractor transport aggregate by increasing their capacity and speed, either on the road or in the field. However, if you increase the saturation of tractors, it encounters problems related to the deterioration of the controllability of the tractor and transport unit. The reduced controllability leads to an increase of damage to transported agricultural products owing to increased oscillatory processes in the system of "road – trailer – tractor – operator" when driving on-farm trails, deteriorating the smoothness and braking properties. Especially sharp these questions relate to transportation of easy-to-damage agricultural products at farm transportation. The feature of data traffic lies in the sharp drop in grade products (products receive numerous mechanical damages, deteriorating its quality, and lose marketability and accordingly reduced its cost). Influence on fruit and vegetable products of unfavorable factors can lead not only to a dramatic loss of quality at the time of transportation, but also reduce the resistance during further storage. To solve the problems emerging when increasing the saturation of tractors, we have proposed devices, allowing reducing negative impact on the production of elevated oscillatory processes, to increase the permeability and straightness of movement of tractor-transport unit
-
BIOHUMATE EFFECTS ON SOIL BIOTA
DescriptionThe article represents the results of the experiment on biohumate «Vermistar» (which was obtained by vermiculturing) and its effects on mycological soil composition. Humic preparations are interesting in the way of detoxication of soil. When humic compounds are active, herbicides and pesticide decompose faster and concentrations of heavy metals are lowered. Adding humic fertilizers affect the physical properties of water-Soil: increases capillary and light soil field capacity (an average of 20-30%) and heavy water permeability, improves the structure and its water stability, reduced soil density. It was noted, that low doses of humic fertilizer contributes to water-stable aggregates, and high - change the ratio of the structural units in favor of agronomically valuable fractions. This, in turn, is accompanied by changes in the humus state, and biological characteristics of the soil. Moreover, increased microbial activity was observed in the first year of application of fertilizers and as an aftereffect. The maximum total number of microorganisms established in the initial phases of plant development. The increase in the number of microorganisms is enhanced and the enzymatic activity of the soil which in turn increases the mobility of soil nutrients
-
MANAGEMENT OF ECOLOGIZATION OF AGRICULTURAL BUSINESS
DescriptionIn modern conditions, an important task is to ensure food independence of Russia. This is due to the need of acceleration the import substitution in terms of the current foreign trade policy of the country. In this context, a priority task for managers of the agricultural sector is to increase profitability of agricultural production, taking into account compliance with its greening. The questions of improving the management of agricultural business through its transition to an innovative path of development, including the greening of nature are investigated in this article. We have investigated the concept of "agribusiness" in terms of its economic content. In addition, the main components of this category considered and described in the article. The article presents an analysis of the main results of environmental protection and the most important indicators of environmental management. We have shown the assessment of the dynamics of production and economic indicators of agribusiness management and ecologization and their relationship. On the basis of this study, we have made the conclusions about the need to reform the control system of agricultural production by using innovative mechanisms. Which, in turn, is possible using the four main directions of scientific and technical progress, including biological innovations, tools of technical progress, innovative approaches to the development of energy resources and the organizational and economic innovation
-
THE ESSENCE OF THE SHADOW ECONOMY AND THE PECULIARITIES OF ITS DEVELOPMENT
DescriptionThis article contains the answer for the question about the "shadow" sector of the national economy, there is the author's interpretation of "shadow economy" as a self-organizing system, which develops itself according to the main economic principles and situates in harmonious coexistence with the economic environment. We have identified the main causes of the appearance of shadow structures, stages (birth, development, maturity, decline and death), their characteristics and offered the basic directions for fight with the shadow economy. This research was illustrated with drawings and analytical tables. The author reveals the essence of the system of national accounts, as a system of indicators which were recorded in the form of accounts that reflect the different sides of the reproduction processes in the economy, it identified the main indicators and schematically illustrates the relationship of these indicators. We have estimated the size of the shadow economy in different countries, identified factors that help to the development of shadow structures, including the imbalance of demand and supply, which is caused the deficit of goods and services. The author presents the main trends of spreading the shadow economic activities (financial, economic, legal, administrative, social and political) and the direction of fighting against the shadow economy, with the help of mass supporting this struggle in society
-
Description
Grain is of strategic importance and is the basis for food security. The gross national product share of grain and its products is about 10-15%. It always stands out from other types of raw materials, as it is used to produce the most popular daily foods. According to the characteristics of management in agriculture, it should be emphasized that the absence of objective and timely information at all stages of production of the plant-breeding, and as a result, non-optimal choice of technology of cultivation of agricultural crops, might result in the fact that the cost of labor and material resources increases significantly, the company does not receive profits, and sometimes suffers losses. When selecting cultivation technology for agricultural crops, an agronomist has a database of more than a hundred times-personal of alternative technologies for each crop. It is up to the decision-maker (DMP) to find specific criteria to select the most suitable (for the owners and the climatic zone) technology of cultivating for the culture. These circumstances explain the relevance of in-depth research of economic and mathematical models and methods of analysis and evaluation of the economic efficiency of technologies of cultivation agricultural crops. The article deals with the process of adaptation and the possibility of using the model and the method of binary matrices to solve the problem of the choice for cropping technology
-
THE EFFECT OF TREATMENT OF GRAPE CUTTINGS WITH ELECTROMAGNETIC FIELD ON THEIR REGENERATIVE SKILLS
DescriptionThe article presents the results of studies on the effect of processing varieties of grape cuttings of Pervenets Magaracha using alternating electromagnetic field on their regenerative skills. Processing the cuttings with alternating electromagnetic field was carried out using an induction coil for 5,10,15 and 20 min. As a control option, the cuttings were soaked in water, as a standard option – the cuttings were soaked for 24 hours in a 0.01% solution of IAA. Rooting was performed in vessels with water at optimum temperature conditions. It was found, that the use of IAA for the first time led to the inhibition of blooming buds. EMF treatment of cuttings with each exposure has a stimulating effect on this indicator. Application of EMF exposures in the 5 to 15 minutes resulted in a significant increase in the length of shoots, compared to the control variant and the option to IAA. Processing cuttings with EMF exposures at 5,15 and 20 minutes resulted in a significant increase in rooting compared with the control. Maximum rooting was obtained at an exposure of 15 minutes. It was the same as in the version with a standard rooting stimulant - IAA. However, the highest yield of cuttings with 3 roots and ended up in a version with a 20-minute exposure. Maximum number was noted on the heel of the roots cuttings option with IAA. Treatment of cuttings with EMF exposure 5, 10 and 20 minutes, has also led to a significant increasing of this indicator, respectively, 45.5; 22.7 and 79.5%. The maximum increase in the number of roots was obtained in the variant with exposure 20 minutes. Thus, this option should be considered as the best one
-
INFLUENCE OF PROTECTIVE COATINGS ON GROWTH AND DEVELOPMENT OF ONION CROPS
06.00.00 Agricultural sciences
DescriptionThe influence of protective coatings on changes in the biological characteristics of quality, germination, plant growth and development of the onion crop quantitative loss of garlic was investigated for the first time. The objects of research were winter garlic called Tien Shan and onion of Allan variety. Water solutions of polyvinyl alcohol PWS-5, paraffin coating Р, paraffin-cerezin composition PK-1 were studied as a protective coatings. Coating onions and chives before planting them in the ground delay germination, respectively at 1 and 2 weeks. Then, protective coatings act as growth stimulants. The greatest increase in green mass of garlic for 3 months (almost 2 times) compared to the control (uncoated) prepared using the hydrophobic coating РK-1. РK-1 increases the yield of garlic and onions in 1.5 times, and the seeds of onions in 1.3 times. It is recommended before planting onions to cover onions the PK-1 in order to prevent his fall germination and receive further large bulbs weighing 130-131 g. Carbohydrates, starch, vitamin C, and life-giving moisture garlic, it is best stored in a РK-1 coated serve after planting in soil more efficient power plant. As a result, such plant grows better, develops and gives higher yields
-
Description
The current state of the industry and high level of development of technologies dictates the requirements to various electromechanical converters of energy and electric drives. Constantly there are new requirements to these types of devices and their characteristics that lead to creation of more and more difficult devices of the electric drive and control systems which example is cascade systems of electric drives. This type of drives solves part of problems of the modern industry. However, creation of such devices requires development of new approaches to design and creation of cascade systems of the electric drive and its components where one of the most complex challenges is determination of parameters of electromagnetic system. In the article, a new approach is given, in finding electromagnetic parameters of components of the operated cascade asynchronous electric drive, proceeding from the applied types of the electric windings distributed in space. This approach is realized at creation of the program complex, which is part of system of automatic design