№ 111(7), September, 2015
Public date: 30.09.2015
Archive of journal: Articles count 117, 260 kb
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06.00.00 Agricultural sciences
06.00.00 Agricultural sciences
DescriptionThe stage of introduction of plantlets to in vitro culture is an important stage of technology of clonal micropropagation of plants. For the purpose of decrease in a share of the plantlets that were lost from an infection and increase of their regeneration ability, sterilizers and antibiotics, effective and safe for apple rootstocks’ plantlets wee allocated, and also favorable terms of introduction to in vitro culture were allocated. As a result of the conducted researches, we have established that on influence on an nutrient medium and plantlets infection and on growth and development of plants, beneficial effect on apple rootstocks’ plantlets has an antibiotic nystatin of 200 mg/l: the reproduction coefficient on the medium with this antibiotic is equal 4,3, in the same concentration nystatin has the sanifying effect of 60-75% for stocks of SK 2 and MM 106. During researches of sterilizers for apple rootstocks’ plantlets SK 2, SK 3, SK 4, SK 7, MM 106 as an alternative to widely applied highly toxic sterilizer corrosive sublimate (the first class of danger) were picked up effective and safe preparations for sanitation of plantlets from an infection, such as the household preparation "Whiteness" (sodium hypochlorite) in cultivation 1:2, low-dangerous substance of the fourth class of danger (a share of viable plantlets of 75,5% from initially introduced), and also fosfopag, a preparation of the fourth class of danger (a share of viable plantlets of 65% from initially introduced). The favorable term for a meristem of apple rootstocks’ plantlets’ introduction to in vitro culture are phases of buds’ burgeoning (March) and the intensive growth of shoots (May – June)
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THE DEFORMATION EFFECT OF VM SLIDER MULTI COMPLEX MACHINE SERIES ON PRECISION MACHINING
DescriptionThe article is devoted to the problems of increasing the economic growth of the Russian Federation, the development of high-tech knowledge-intensive manufacturing industries on the basis of a fundamentally new technological order, new unmanned technologies. The measures to improve the accuracy of manufacturing of complex and large-sized parts. Currently, the technical level of many sectors of the economy is largely determined by the level of production of means of production. The basis of these means is the machine tool industry. On the basis of machine tool development we handle a comprehensive mechanization and automation of production processes in industry, construction, agriculture, transport and other industries. We completed a comprehensive analysis of the errors affecting the manufacturing precision parts. The activities for improving the accuracy of manufacture based on VM 32 multi-machine complex series were proposed. We made the analysis of the cutting forces influence and the cross-sectional shape of the slide on its deformation for various types of processing. We determined the optimal shape of the cross section of the slider to increase stiffness and reduce deformation of the slide in metal cutting
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Description
The development of laboratory setup is connected with a necessity of designing and experimental investigation of equipment examples for innovative energy efficient system of agricultural enterprises off-line power supply on the basis of helio moduluses and is stipulated by needs of efficient heat electro supply of agricultural enterprises working in climatic regions with low and short-term solar activity. Operating regimes, matching and justification of necessary elements for the construction of the energy efficient helio system and the most efficient their arrangement are determined based on preliminary experiments. Geographical location of agricultural enterprise (the principal checkpoints should be insolation intencity and solstice angle typical for the region) and social-economic development level of the region should be taken into consideration at forming demands to the constructions and abilities of heat water supply helio modules. The necessity of investigations at laboratory setup with artificial heat sources, simulating solar heat, is explained by impossibility of experiments’ carrying out in the real nature conditions, notably because of weather inconstancy and climate in tote, because of impossibility of setups exact placement on ground location, because of helio collector’s modes of operation limitation by the range of solar activity only in the investigated region etc. The list of technological parameters and helio water heating process factors, which are measured and controlled during the experiments, is built into the designing of the setup. These parameters are based on the statistical data given by meteorological stations of late years. All that will ease the designing of manufacturing helio collectors and will allow to get more precise information, oriented to the maintenance of energy efficient equipment in different zones of researched region with highest possible usage of their potential. With a glance of foresaid, we have designed the laboratory setup for the experimental investigations of the module solar collectors’ elements
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INFLUENCE OF A WAY OF CRUSHING ON ACTIVITY OF INGREDIENTS OF CONCRETE MIX
DescriptionThe article presents the results of the researches of the influence of a way of crushing on activity of ingredients of concrete mix. It is shown that sand crushing by method of free kick in a planetary mill of AGO-2 allows not only to raise its specific surface, to receive the demanded particle size distribution, but also to improve quality of a surface of particles by removal, destruction of superficial inactive films. On a new surface of sand excess energy concentrates, the active centers are formed and there is a fixing of germs of new growths of products of hydration of cement in a place of an exit of dislocations to surfaces of crystals of sand that leads to substantial increase of chemical activity and reactionary ability of sand
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PRIMARY PROCESSING OF CHINCHILLA PELTS
DescriptionThe article represents the results of the study of existing technologies of primary processing of pelts of chinchillas, including killing, pelting, shaping, trimming, dressing, drying, preserving and storage of skins used at fur farms in Europe, North and South America
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PRODUCTION PROCESS DESIGN OF FUNCTIONAL FOOD PRODUCTS BASED ON FUNCTIONAL VALUE ANALYSES
DescriptionThe article substantiates the feasibility of the method of functional value analysis application to ensure high efficiency for the production of functional food products. This article describes the design technique of food functionality based on the methodology of value analysis, allowing considering such factors as consumer preferences, nutritional, functional value, economic and technological indicators while developing product formulations and technologies. With the example of flour confectionery functional production there have been developed: structural model for the production of functional food products, the scheme of evaluation of the value functions, with due consideration of consumer preferences
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TO INFORMATION SYSTEMS DEVELOPMENT FOR A MILK PRODUCTION ENTERPRISE
DescriptionIn this article, we have explained the necessity of creating precise adaptive energy-saving technologies for use on the milk production enterprises. There are defined the main problems that reduce the enterprises efficiency and milk quality. Many of these problems can be solved if there is organized correctly the information flow through the creation of complex programs and databases. Regardless to the size and structure of the milk production enterprises, they have the following main information streams: animal productivity data; information about the herd composition and structure; information about the diet composition; information about the quality of milk and others. For the storage of this information there is a developed database consisting of 66 tables and 10 diagrams. The article includes information on some charts. To meet the challenges of manufacturing processes modeling there was offered a bunch of "Mathematical package - Database Management System." Within the developed automated enterprise management system we have selected MATLAB and MS SQL Server. There are presented models of thermal balance; heat generated by animals; heat loss from the feed coming from outside and so on. We have also grounded the applicability of the structural processes modeling in conjunction with the possibilities of modern database management system that allows you to convert a wide range of energy saving tasks to automated analysis and forecasting. This approach has the modularity and implementation ease, all of which allows you to build complex information systems, which at the same time are easy to change, expand and renovate
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Description
The article presents a mathematical model of the reliability of the flexible robotic manipulator, which establishes the relationship between the design parameters of the individual elements of the flexible section of the handling robot and the indicators of reliability section
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Description
Experimental data on research of influence of technological parameters on structure and durability at compression of the modified fine-grained concrete are presented in the article. It is shown, that at the optimum maintenance of a mineral additive as a part of the mixed knitting the optimum capillary and porous structure of a cement stone and the increased volume of hydrate new growths is formed. At the raised volume maintenance of an active mineral additive there is a formation of the non-optimal capillary and porous structure of a stone leading to decrease in efficiency of modifying
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Description
The goal of the study is to research experimentally a pseudo-noise sequence acquisition method for multicarrier communication systems of MC-DSCDMA, that allows low hardware requirements and able to operate in low quality channels. The way of achieving this lies in using a specially developed computer model of algorithm in Simulink. The achieved results have shown high efficiency of the considered acquisition method in contrast to sequential search method. The proposed algorithm can be used in multicarrier systems for acquisition of aperiodic pseudo-noise sequences in wireless public networks and in military communication networks