№ 126(2), February, 2017
Public date: 28.02.2017
Archive of journal: Articles count 63, 153 kb
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PREPARATION AND APPLICATION OF LIGHT WATER IN FOOD TECHNOLOGY
DescriptionWater is the most important substance of the composition of all living organisms on our planet. Active industrialization of society has led to an increase in the amount of water consumed for the needs of the economy and to increase the volume of poorly treated sewage. In the twentieth century, during the arms race, the United States, the USSR, Britain, France, China, in the tests of nuclear weapons, the deuterium content in groundwater and surface waters has increased significantly. Formed in nuclear fission neutrons loose, falling into the nucleus of a hydrogen atom form a deuterium atom. In the last 70 years, the deuterium content of water bodies has increased by almost 30%. Natural ponds and rivers no longer cope with self-purification of polluted water. In most regions of the country there are restrictions on the use of natural sources of water for drinking and bathing. Only the rare mountain springs and meltwater mountain tops glaciers have pristine purity of water with a low content of deuterium. There is reliable information about the harmful effects of heavy water on biological objects and the possibility of reducing the deuterium content in tap water by technical means. A method of producing so-called "protium" steam distillation of water proven in practice is based on the famous kinetic isotope effect difference of light water boiling temperature (100 С) and heavy water (103 С), but this method is characterized by higher energy costs. It is not economically justified. Another method of forming the light water is electrolysis, which in spite of the considerable power consumption has prospects of implementation. Our job is to create a viable water separation technology with a different isotopic composition. The resulting improved technology for water with DDW will be widely used in the production of beverages and a variety of other foods
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STUDY OF SORPTION PROPERTIES OF FILTER MATERIALS
DescriptionPresent article is devoted to research of sorption properties of various filtering materials. The various types of filters, such as fabric, frame, granular filters are considered. The principles of work of each type of filters, feature and difference them from each other are considered. The conditions of their application are investigated. Process of filtering through a layer of granular loading also is described. The physicochemical parameters of some granular materials including sand, hydroanthracite-Р, granite road metal, volcanic tuffs, and expanded vermiculite are given. The comparison of oil capacity of some materials is considered at their use as a filtering material and oil collectors. We have described sorption features of activated carbon, used as a filtering material for clearing waters of petroleum and petroleum. The article has a conclusion about their prospects and the efficiency of application when fighting with petroleum pollutions
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THEORETICAL STUDY OF THE PROCESS OF SEPARATION OF TOBACCO LEAVES FROM THE STALK
DescriptionThe article presents a constructive-technological scheme of leaf separating apparatus for harvesting tobacco leaves. We have performed a theoretical analysis of the process of separating tobacco leaves from the stalk. The dependences characterizing the trajectory, speed and acceleration of an arbitrary point of the cutting edge of the drum were obtained
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FEATURES OF USE AND PROSPECTS OF IMPLEMENTATION OF PROJECT MANAGEMENT IN AGRICULTURE
DescriptionOne of the priority directions of development of the Russian economy, in terms of import substitution and maintenance of food security of the state is agriculture. Agricultural production is a complex, high-risk business that requires the most careful calculation and planning. The achievement of the objectives to improve production efficiency and reduce risks in the agricultural sector can contribute to the use of the design of controls, instruments, components of complex project management. Project management is an opportunity not only to use the existing internal resources of the enterprise, but also actively to attract additional investment. In connection with this topic is the use of project management elements or transition the agricultural sector enterprises from the classical management to project management is quite important. Partly to reduce the risks associated with the implementation of agricultural projects, and in some cases completely eliminate them, you can with the help of new information technologies in project management of agricultural production. This can greatly affect the quality and efficiency of management processes. More and more computer equipment and automation introduced in crop management processes to perform field work at the optimum time and progressively reduce costs and improve profitability. For example, the system "GEO-AGRO” helps organize all coming from various sources, information and process it to make decisions. Using the project approach more actively in the agricultural sector in conjunction with information technology is possible, first of all, with the state support of the agricultural sector projects. In addition, it is advisable to form the design thinking of farm managers. Implementation of these proposals will help to attract more investment and boost profitability for agricultural production
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Description
The relevance of the theme of this article determines the fact that in modern conditions the sphere of housing and communal services, on the one hand, requires the immediate carrying out of complex modernization of communal infrastructure, and on the other hand, it has every reason to become a breakthrough for sustainable development of the domestic economy. The main elements of management in the sphere of housing and communal services the article defines the housing Fund, as well as many institutional agents engaged in its operation. It is established that housing and functioning municipal infrastructure have a significant physical and moral deterioration. Its presence negatively impacts on the quality provided to the population for consumption of housing services. We have identified the most significant factors and the degree of their influence on the development of innovative potential of the sphere of housing and communal services. The article substantiates the necessity of accounting these factors when developing economic and mathematical models for institutional agents of housing and communal services to make optimal decisions in conditions of uncertainty and enabling them to improve the quality of housing and communal services. Features of formation of economic-mathematical models were taken out of the scope of this article. We have defined a number of the most promising areas for carrying out of complex modernization of communal infrastructure of housing and communal services on the basis of introduction of new economic mechanisms, economic-mathematical models and instrumental methods that increase the quality of housing and communal services
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INTENSIFICATION OF CULTIVATION OF CHLORELLA WITH THE USE OF IRON NANOPARTICLES
DescriptionThe influence of reduced iron nanoparticles and its oxide Fe2O3 on the growth rate of Chlorella vulgaris IFR # S-111 added to the Tamiya nutrient medium is studied. In the range of concentration of additives 0-0,1 g/l (gram per litre) an oxide inhibited the growth of microalga already when its content in the environment 6,25*10-3 g/l. With the increase of reduced iron concentration in the first twenty-four hours in the whole range the growth of the cell concentration of microalga was observed. With a maximum iron concentration of 0,1 g/l the density of a chlorella exceeded the control for 70%, and in 48 hours for 150%. The microscopy hasn't shown morphological changes of a chlorella cells with addition of the nanoparticles to nutrient medium. Accelerated reproduction of the microalga cells became the result of the intensification of the photosynthetic processes, as indicated by the nature of the parameters of delayed fluorescence (DF) of chlorophyll and shapes of the induction curves. The maximum level of DF in all experimental samples after 24 hours of cultivation was significantly higher than the control, and photosynthetic activity increased with increasing concentration of nanoparticles. In 48 hours the maximum activity was observed at concentration of nano iron 0,0125 mg/l, then decreased. It shows that with an intensive growth of a chlorella the potential of nutrient medium was quicker exhausted that led to decrease in intensity of photosynthetic processes
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01.00.00 Physical-mathematical sciences
DescriptionClassic quantitative measure of the reliability of the models: F-measure by van Rijsbergen is based on counting the total number of correctly and incorrectly classified and not classified objects in the training sample. In multiclass classification systems, the facility can simultaneously apply to multiple classes. Accordingly, when the synthesis of the model description is used for formation of generalized images of many of the classes it belongs to. When using the model for classification, it is determined by the degree of similarity or divergence of the object with all classes, and a true-positive decision may be the membership of the object to several classes. The result of this classification may be that the object is not just rightly or wrongly relates or does not relate to different classes, both in the classical F-measure, but rightly or wrongly relates or does not relate to them in varying degrees. However, the classic F-measure does not count the fact that the object may in fact simultaneously belongs to multiple classes (multicrossover) and the fact that the classification result can be obtained with a different degree of similarity-differences of object classes (blurring). In the numerical example, the author states that with true-positive and true-negative decisions, the module similarities-differences of the object classes are much higher than for false-positive and false-negative decisions. It would therefore be rational to the extent that the reliability of the model to take into account not just the fact of true or false positive or negative decisions, but also to take into account the degree of confidence of the classifier in these decisions. In classifying big data we have revealed a large number of false-positive decisions with a low level of similarity, which, however, in total, contribute to reducing the reliability of the model. To overcome this problem, we propose a L2-measure, in which instead of the sum of levels of similarity we use the average similarity by different classifications. Thus, this work offers measures of the reliability of the models, called L1-measure and the L2 measure, mitigating and overcoming the shortcomings of the F-measures; these measures are described mathematically and their application is demonstrated on a simple numerical example. In the intellectual system called "Eidos", which is a software toolkit for the automated system-cognitive analysis (ASC-analysis), we have implemented all these measures of the reliability of the models: F, L1 and L2
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DESING OF AUTOMATED SYSTEMS IN SECURED EXECUTION OF MILITARY USE
DescriptionIn the work we have developed a structural modeling of the optimal choice of information security devices in the design of automated systems in the protected execution in the transition to network centric methods of control of troops and weapons
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WORK AND MOTIVATION IN AGRARIAN SECTOR
DescriptionBased on a comparative analysis of the level of productivity in the agrarian sector of Russia and the leading countries in the world economy, the main trends and factors affecting the growth of this indicator were revealed. One the main reasons for low productivity is the technical and technological backwardness. In this regard, productivity gains can be achieved by improving the employment and organizational-technological innovation. We have comprehensively illuminated the problem of labor motivation. Based on our own researches and data from agrarian scientists the ways of its strengthening were traced. Also, there was highlighted highly motivated work in the family farms, which is not just a form of entrepreneurial employment based on private ownership of the means of production and the use of familial form of labor, but also the lifestyle of the rural man. We must not forget that the main motivation to work lies not only in its pay, but also in the education of people and traditions. It highlights the role of social support of rural youth and the need for radical improvement of social infrastructure. For the selfassertion of the individual, which is especially important for young men, the person should see a sense of ownership, initiative, independence, participation in decision-making and the distribution of income. These qualities are fully manifested in the family livestock farms and other forms of small business. Work on yourself is the most reliable social protection
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CURRENT STATE OF MECHANIZATION OF TOBACCO HARVESTING
DescriptionThe article presents results of studies of the present state of mechanization of tobacco harvesting. The aim of the research was to assess the state of the technical equipment of the tobacco farms in the current economic conditions. We have performed an analysis of the technologies of harvesting tobacco. Main problems of harvesting tobacco leaves were shown. We have analyzed the main constructive scheme of tobacco harvesters used for different technologies of harvesting tobacco leaves. The article gives main advantages and disadvantages of the applied technical solutions and lists tobacco harvesters used in foreign tobacco farms. A disadvantage was the impossibility of adaptation to the domestic types of tobacco. In the end, we have developed a project for solving scientific and technical problems of complex mechanization of technological processes of preparation of plantations to drying process, carrying out machine harvesting and preparing tobacco leaves harvested by the machine. This involves three stages. This will solve the problem of insufficient technical equipment of production of raw tobacco