№ 117(3), March, 2016
Public date: 31.03.2016
Archive of journal: Articles count 89, 225 kb
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FINDING FUNCTIONS OF ENERGY AND ACCUMULATION WIND PERIODS FOR THE SPECIFIED SPEED
DescriptionThe article describes a method for obtaining the functions of energy and accumulation wind periods, using the program Microsoft Office Excel. We have showed the algorithm of the programs that had been developed to reduce the processing time for large quantities of data. Obtained functions are recommended for determining the optimal parameters of autonomous windpower stations with accumulated reserve
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TECHNICAL AND ECONOMIC PERFORMANCE OF VM32 MACHINE MULTI-COMPLEX
DescriptionThe article describes problems of economic growth of the Russian Federation, development of high-tech knowledge-intensive manufacturing industries on the basis of a fundamentally new technological order, creation and development of import-substituting production of engineering resources that relate to dual-use technology and are in the most demand by strategic organizations of machinetool, machine-building and military-industrial complexes (aircraft engineering, rocket and space engineering, shipbuilding and power engineering). We proposed some measures to improve the accuracy in the manufacture of complex and large-sized parts with weights up to 100 tons. Precision machining of the workpiece surface is directly dependent on the tooling, quality and quantity of the cutting tool (CT), as during the processing the CT wears and must be replaced. We have described the modernization of multi-machine complex and ways of increasing the accuracy, the change in the kinematics tool supply to increase the number of tools used in the processing. We made calculations of the new chain drive of the tool supply. The proposed modernization of the tools will increase the instrument amount that allows increasing the accuracy of manufacturing products. We have also made calculations of the economic effects of the tool supply modernization
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MATHEMATICAL MODEL AND FIELD RESEARCH OF FUEL WOOD NATURAL DRYING IN BUNCHES IN THE CUTTING AREA
DescriptionThe purpose of this research is to receive mathematical model of natural drying of the whole trees in bunches in a cutting area based on experimental data. The field research of natural drying from March to October 2015 of the whole trees of pine and birch of different diameter laid definitely in bunches in a cutting area was conducted for this purpose. The mathematical model describing change of moisture content in wood in the course of natural drying in bunches in a cutting area was as a result developed. The received equation of regression defines dependence of average humidity of wood in a bunch from diameter of wood, quantity of a liquid atmospheric precipitation, relative humidity and temperature of air, average speed of the movement of the air blowing in bunch of trees, duration of natural drying. The developed mathematical model allows predicting change of moisture content of wood in the course of natural drying with a margin error less than 5%. Humidity of wood in the course of natural drying from March to October was on average reduced from 52% to 27%. Besides, in article the technology of logging of fuel wood on an energy forest is offered. The technology of stacking of trees in bunches at logging of the fuel wood which is grown up in forest plantations is offered. The results of the research can be used for increase of production efficiency of fuel wood
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OPTIMIZATION OF WELL PLACEMENT IN WATERFLOOD PROJECT IN "X" FIELD NIGER DELTA, NIGERIA
DescriptionWater flooding used in secondary oil recovery to level up reservoir pressure can be enhanced in order to fit the reservoir conditions with the aim to optimally recover oil. One of the important optimization variables to realize this aim is optimal well placement. Various methods have been suggested for this problem. Among these is direct optimization, although accurate, is difficult due to the number of simulations required. Optimal placement of up to six injection wells was studied at the X field in western Niger Delta of Nigeria. Injection rate and injection time was also optimized and net present value (NPV) of the flooding project was used as the objective function. In this case study, it is shown theoretically and by means of Eclipse 100 that according to the basic elementary reservoir characteristics, optimal oil recovery is strongly dependent on well placement pattern and injection rate. Simulation results show that good sweep efficiency can be achieved with a regular pattern with an optimal well position
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06.00.00 Agricultural sciences
PRODUCTS OF PROCESSING OF RAPESEED IN FEEDING OF FARM ANIMALS AND POULTRY
06.00.00 Agricultural sciences
DescriptionIn the current economic conditions of the import substitution, special importance is given to the search for new feed sources, methods of preparing them for feeding, the use of biologically active substances and enzymes. At the forefront of feed production is rape as breeding work with this culture has showed positive results. Currently, selectionists have bred yellow double-zero "00" varieties of rapeseeds free of erucic acid of "Canole" type, that have low glucosinolate level. The development of new and modern technology standards are required for preparation them for feeding, since they are fundamentally different from the previously used rapeseed varieties and have fewer restrictions for feeding to different types of farm animals and poultry. The article presents a fairly lengthy and reasoned review of the literature of a large number of authors on the topic, as well as given rapeseed market analysis, rational and advanced methods of preparing rapeseed processed products for feeding to young and adult animals. Much attention is paid to the use of a variety of biologically active substances and enzymes, which improve digestion and absorption of nutrients from rations with rapeseed processingproducts, increase productivity and reduce feed costs per unit of production. The use of processing products of rapeseed improves the profitability of livestock production. Feeding of rapeseedcake to cattle increases the protein content and volatile fatty acids in the rumen content, increases the number of infusoria and decreases ammonia levels. The inclusion of rape forage in diets of farm animals and poultry improves hematological parameters. Products of rapeseed processing of the varieties with low glucosinolatesa1re recommended for the rations of farm animals and poultry depending on the species, age and physiological state
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THE INFLUENCE OF GENOTYPE OF RAMS ON THE QUALITATIVE CHARACTERISTICS OF MEAT
06.00.00 Agricultural sciences
DescriptionThe article presents the results of the qualitative assessment of meat of crossbred rams. The analysis of the data shows that crossbred rams of 2, 3 and 4 groups increased the absolute mass of muscle tissue compared with purebred 12.3; of 18.2 and 25.6%, respectively. Fine-wooled rams were superior in the relative content of bone in carcasses of crossbred 1.1- 4.2 percent. Output of pulp for 1 kg of bones had the advantage of crossbred rams 2, 3 and 4 groups compared with purebred 0.12; 0.24 percent and 0.44 kg respectively. The analysis of the data shows that in carcasses of young animals of all the groups the greatest specific weight took cuts of the 1st sort. Nevertheless, the valuable parts to carcass weight balance was higher in the carcasses of the crossbred calves. So, rams 2, 3 and 4 groups, this advantage was 1.9; 4.5 and 4.7%, respectively. Thus, the analysis of a complex of indicators characterizing the quality of meat rams of different genotypes revealed that the superiority for the studied indices took place for two - and three-bred animals. These options of both simple and complex industrial crossing are promising and can be implemented and used in the farms of Merino and crossbred sheep
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HARMFULNESS OF SONCHUS OF PINK IN SOWING SUNFLOWER
06.00.00 Agricultural sciences
DescriptionThe article presents the results of the study of harmfulness of pink sonchus in sunflowers plantations
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06.00.00 Agricultural sciences
DescriptionThe article gives a brief summary on the results of the introduction of rose varieties of climbing type in the central sub-zone of the Krasnodar region. Starting from the year 2000 in our institute a collection of roses from different garden groups, which includes 164 varieties, has been formed. Presently the rose varieties with long stems (from 2.5 m or more) are popular among specialists of landscape industry and floristlovers. Therefore we carry on introductions and study rose varieties of the groups of Rambler and LargeFlowered Climber. Rose varieties with valuable decorative signs, with enhanceable resistance to cold and drought-resistingness are selected. The valuable varieties and sources of the indicated signs are identified. Varieties of Albertine, American Pillar, Devichiy grezy are the sources of bright flower color; Bobbie James, Dorothy Perkins, Duc de Constantine - sources of long (more than 4 meters) of flexible shoots Warthburg - the source of early flowering. Variety New Daun - one of the few varieties of Rambler, which is characterized by re-bloom throughout the growing season in the conditions of the Krasnodar region. The indicative collection of several rose varieties includes the group of Large-Flowered Climber. A variety called Adzhimushkay is a source of large fragrant flowers of bright and early flowering. For the variety of Crimskiy Motive we noted the presence of a valuable feature - long flowering during the dry season (July-August). Flammentanz was included into the collection as one of the most winter resistant varieties of large-flowered. Promising varieties of the series of Super Rambler in the conditions of Krasnodar in the dry season formed short shoots, and flowers were not formed. Rose varieties included into the collection can be considered indicative of "anchor" genotypes, which are valuable for involvement into the selection process
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06.00.00 Agricultural sciences
DescriptionThe article has considered the influence of modern climate changes on the intensity of erosion processes within the boundaries of the basic landscapes of the region. It has given the results of the spatial distribution of the rainfalls. The most noticeable climate changes of the Bryansk region are reflected in the decrease in the activity of erosion during snowmelt due to the lower amounts of snow and soil frost depth. In the area, the dynamics of rainfall does not detect a single trend. The processes of erosion and deflation are studied in the relationship, the manifestation of these processes on the territory of the Bryansk region. It has published the results of the risk analysis of erosion and deflation on forest soils of the region and justified the application of G. V. Bastrakov’s method for modeling erosion-resistant agricultural landscapes. This approach has a number of advantages over the other known methods. In our case, regardless of soil and climatic and geomorphological conditions, the challenge is to ensure such events in which erosion resistance of the land will not be below a critical value. The research results are the initial data in designing soil conservation activities on the territory of the Bryansk region. The obtained data of the erosive properties of soils from climatic changes enable the study and forecasting of the development of agricultural landscapes of the region in the medium term
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SELECTION OF RICE PRODUCTIVITY BY SELECTION FROM HYBRID GENERATION OF WELL-GRAINED PANICLES
06.00.00 Agricultural sciences
DescriptionDuring 2012-2015 from the two fissile populations of rice hybrid Il.14 x Kuboyar and Il.28 x Kuboya we conducted multidirectional selection of panicles with low, medium and high number of grains in them. It was established a different reaction to the selection of hybrid generations by yield. The lowest yield was formed at planting grain from small panicles, intermediate - from the middle panicles and biggest - from the major panicles. The reaction to selection decreased with each successive generation. In the hybrid Il.14 x Kuboyar at positive selection of the yield increase towards the initial population F2 was in F3 - 10,5%, in the F4 - 3,8% and F5 - 1,9%, at Il.28 x Kuboyar - respectively 4, 4%, 3.1% and 0.7%. At negative selection in Il.14 x Kuboyar there was a decrease of yield on 7.7% F3, in F4 on 6.9% and in F5 on 0.2%. By years of research was not observed variations in grain yield obtained from the panicle with an average grainness and generally was at the level of the original population. At the hybrid Il.28 x Kuboyar for negative selection of the relative yield initially decreased on 1.7% in F3, while then for all kinds of selection to the fifth generation grew up and different to a lesser extent than the first the hybrid, although the ranks of the values preserved. The yield from a fraction of well-grained was 98.4%, medium grained - 96.5%, low grained - 94.2% of the initial Kuboyar variety