Results of experimental researches of determination
of corn stems rolling speed in different places of
corn- harvester rolls have been shown. Opportunity
of corn-harvester work under speed of 12-15 km/h
and increased frequency of rolls rotation was analyzed.
Available corn-harvester working regime with regard of intensification of harvesting process was chosen in the result of theoretical and experimental researches.
The article presents analysis of emissions to the
atmosphere in the regions of the North Caucasus
Federal District by means of visualization tools of
Tableau Public 9.0 in order to identify problem
areas and to support management decisions
The possibility of using involute sprockets, more technologically advanced in manufacturing, compared with sprockets with straight, convex-concave profile of the lug on the criterion shock resistance circuit, the maximum permissible speed of the drive sprocket for bush roller chain drives and gears with a toothed chain. The comparative analysis of researches of operation of roller and tooth chain gearings with various steps and types of profiles of sprockets showed that in all cases with increase in a step of a chain the coefficient of speed of blow increases, and the increase in number of lugs at sprockets reduces the speed of blow of the hinge about sprockets tooth. Value of coefficient of speed of blow for couple an evolvent sprockets - a gear chain is much less than value of coefficient of speed of blow for couple a plug-roller chain –sprockets of any profile. Less noise during the work of tooth chain gearings is due to evolvent sprockets. As a result of researches it is established that on kinetic energy of impact of sprockets and the hinge of a chain, sprockets with an evolvent profile can be applied on an equal basis with the sprockets having concave-convex or rectilinear profiles of lugs. Respectively, evolvent sprockets can be used both in chain transfers with roller and with gear chains
This article is devoted to the studying of one of the most important aspects of learning of life-support and wildlife management systems of hunting of ancient inhabitants of the Northern Black Sea Coast. Such researches are one of the main directions in sphere of studying prehistory of humankind in our country and abroad. The main aim of the research was to create the hunting pattern and to learn the chronological changes, by studying same time materials of Kamennaya Balka II, Tretij Mys, Anetolka II and Amvrosievka.
During this research, the complex analysis of faunistic remainders was conducted with the help of new methods, which were developed by Russian and foreign authors. This led to a number of new high-quality results. The article shows the meaning of data which can be learnt by studying faunistic remainders and importance of such type of sources. The continuation of such research can extend our conception of life of our ancient ancestors
The article is devoted to the search and development of new models of structural changes. The results of these studies correct the activity of the major sugar integrated production systems of sugar subcomplex in the agro industrial subcomplex. The article reveals the problem of formation of an integrated methodology for analysis of structural changes in the economy of AIC, denoted with indicators and macroeconomic parameters of the sugar subcomplex, which need to be considered in the evaluation of structural changes. We set the task of developing a new tool of mathematical statistics, solving a range of problems for identifying non-stationary time series (NSTS) of the “beginning” of new super cycles (sets of cycles). In the economy the classic solution to this problem is in the field of detection of non-equilibrium effect of delayed reaction to earlier technological change, changes in foreign trade conditions, low mobility of labor and capital, and the various barriers to free competition. From our point of view, the ideal solution corresponds to the detection channel offset and the verification of dynamic series for homogeneity, i.e. the presence of phase transitions. The structural shift in the economy can be seen as a qualitative change in the system, consisting in the replacement of the previously existing ties between its constituent parts with new ones. Such shifts are due to the uneven development of the various elements of the economic system, they indicate that there are changes in the needs of subjects of economic life and economic resources. The author proposes a control parameter of the analysis, which uses methods to determine structural changes (tests Pettitte, Buishand and Alexandersson). The article deals with structural changes in the sugar industry of agriculture. The analyzed period is according to different categories from 60 to 180 years. The presence of structural changes is investigated by indicators such as the amount of sown areas, gross harvest, yield of sugar beet and sugar production from sugar beets and cane. We have investigated the theoretical and methodological approaches, the existing methods for the analysis of structural shifts in the economy and their impact on reproductive processes, their classification is given. We have identified key issues of improving efficiency and quality of transforming the economic structure of the sugar subcomplex. The article shows the dynamics of indicators of the economic structure of the sugar subcomplex of Russia and other countries of the world for different periods of time and its impact on sugar subcomplex of AIC. The author has proposed an adaptive algorithm and model test for homogeneity (structural shift) for integrated production systems that focus on sugar subcomplex of AIC. This method has been tested by the author in relation to economic systems (at various levels) of sugar subcomplex in agro industrial subcomplex of Russia, other countries and the world at large. Along with this, the author has proposed (we have developed a hierarchical analysis of structural changes) to use the identification of clusters for each category of sugar subcomplex with attraction of mathematical apparatus in the form of tests for homogeneity. We have marked indicators and parameters for the analysis of structural shift, the main reasons for this phenomenon. The results of empirical studies carried out have confirmed the possibility of practical use of the developed analysis
The problem of environmental contamination by heavy metals is significant problem of urbanization. The search of ways of indication heavy metals pollution becomes actual, because of their simplicity and affordability. A widely used test objects for heavy metals pollution indicators are leafy mosses used for bioindication, because they are highly sensitive to any stress factor. The research shows that bioindication with using leafy mosses as test objects is highly effective method definition of heavy metals pollution. Using of bioindication methods are promising techniques for the assessment of the contamination of ecosystems by heavy metals. Through the use of this method, it is possible indication of pollution of the surface layer of air with heavy metals. The epiphytic moss (Pylaisia polyantha) growing in different zones of the city of Rostov-on-Don, was used for the heavy metals pollution biomonitoring of urbosystems. The accumulation features of heavy metals in the epitaphic pylaisiella moss (Pylaisia polyantha) in the territory of the city of Rostov-on-Don have been considered. pylaisiella moss (P. polyantha) accumulates the largest amounts of the following heavy metals: Zn, Cr, Pb, Sr, Ni (Kc to 1.07), and Cu. According to the Kc values, all the studied elements accumulated by pylaisiella moss form the following series of biological uptake: Zn > Pb > Sr > Cr > V > Ni > Cu > Cо. The results of investigation showed that the epiphytic moss (Pylaisia polyantha) can be used as indicator of heavy metals pollution in different polluted zones
Grain production is a major sector of agriculture. The
article discusses the factors that influence the
development of grain production in the Krasnodar
region. These include favorable natural and climatic
conditions, the need of the population in crop
production, quality of organizational and technical
activities and other agricultural enterprises. The
current situation in the country is poor economic
situation, including the importation of imported food,
when agricultural companies require the search of
internal reserves to increase production. The
performed statistical analysis of the economic-yield
crops helped to identify factors affecting the
productivity of crops, material and technical base of
agriculture, as well as the need to use chemicals used
to fertilize soil. The article suggests ways to optimize
the impact of economic factors on the yield of
grain in the Krasnodar region. Consider the
correlation and regression analysis to determine the
relationship between the studied parameters and
effective sign that clearly shows the evolution of the
yield of crops
The railroad warehouse has most important role in the delivery process of fertilizers to agricultural consumers. It acts as logistics intermediaries. The analysis of material flows has been done on the example of a typical provider of mineral fertilizers in the South of the Rostov region (CJSC «Zernogradagrohimservis») for the last 6 years. Income values and implementation values are varied during the year synchronously for all fertilizers types with the exception of a few months at the beginning and the end of the year. During most of the year the enterprise operates as a negotiable warehouse. In January-February and October-December ammonium nitrate accumulates as a seasonal inventory for the spring peak of implementation, in the rest of the year its reserves are insurance. Stocks of other fertilizers types are insurance stocks for most of the year, in May-July occurs a slight accumulation of their seasonal stocks. A significant portion of mineral fertilizers (especially ammonium nitrate) is delivered for small enterprises and individual farms by cars of this provider. According to the supply contracts, a one-car-run is performed for the vast majority of customers. Routes of delivery of fertilizers are either radial or pendulum (with reverse idle mileage). Therefore, the optimization of the delivery of fertilizers does not seem possible by methods such as obtaining the shortest route network, consolidation of suppliers for consumers, etc.
The article considers the issues of international spread the fruits of bottled gourd. Analysis of polymorphism of lagenaria fruits have been made on the basis of images of the paintings and sculpture, marked characteristic features of each country. Issues of selection on the basis of the trait of fruit form have considered
In the article we show the investigations of aromatic wine produced from grapes of Sauvignon blanc grown in AF South in Temryuk District. As a result, the article estimates obtained good organoleptic characteristics of the taste, within 7.3-7.9 points, which is higher than the passing score. It was found that the greatest negative impact on the formation of mutual organoleptic properties have such flavors as metilatse-tal and the amount of volatile acids