05.00.00 Technical science
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Description
The article describes the methods of calibration and working measurements, planning of experiment and experimental data processing, characterized objects of study and provides illustrations of research results of P-t depending for petroleum fractions. We have described the results of generalization of density (specific volume) of the examined samples in the liquid and on the saturation line and SVP in the two-phase region. The article shows that existing methods of calculation based primarily on the results of the study of the density and SVP of individual hydrocarbons and extremely limited experimental data of petroleum products. We have detected a necessity of creation calculation methods based on reliable experimental data, providing greater accuracy, substantiated choice of directions for research SVP and density of petroleum products. Modern technology of petroleum processing and using of petroleum products requires the creation of more perfect installation for the study of SVP of substances and obtaining experimental data with greater accuracy. Generalized analytic dependence of SVP of petroleum products from all determining parameters have not yet been received. Therefore, experimental determination of this pressure should be the basis of the calculation of any device, because the calculations of petroleum products by the formulas and nomograms obtained with considerable error
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Description
The article shows that for the essential oil industry of the Russian Federation to solve the problems of import substitution it is urgent to develop effective technology to extract fatty oil from the crushed and deprived of ether by water vapor coriander fruits. The existing technologies for obtaining fatty oils from deprived of ether coriander were considered. It is shown, that at small-scale enterprises it is most advisable to remove fatty oil by screw pressing. A brief analysis of main factors affecting the completeness of oil extraction in screw presses was carried out. The conclusion about the necessity of preparation of deprived of ether coriander for extraction with the purpose of increasing the yield of fatty oil was made. It is shown, that one of the stages of such preparation is the removal of part of the shell from deprived of ether coriander, which also increases the nutritional value of the oilcake. Fractional composition of deprived of ether coriander after extraction of essential oil by water vapour and drying was investigated by sieve analysis method. On the basis of obtained data, prior to separating the shell by pneumatic separation, it is recommended to separate deprived of ether coriander into three fractions by size – coarse (riddling from the sieve with the diameter of 1.8 mm), medium (riddling from the sieve with the diameter of 1 mm) and fine (undersize from a sieve with a diameter of 1 mm). Component composition of the coarse fraction of deprived of ether coriander was studied. It was found, that the content of the shell in this fraction is 36%, which indicates the possibility of its effective separation by pneumatic separation
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EFFECT OF ELECTROMAGNETIC FIELD LOW FREQUENCIES IN THE TECHNOLOGY OF DRYING MANGOES AND PAPAYAS
DescriptionThe intensity of drying process depends on the speed of movement of the moisture inside the object and the speed of its removal from the surface. To accelerate the drying process, temperature gradient is often regulated, which causes large power consumption. Currently, they are different methods in used for intensifying the process of drying of plant material which are physical, mechanical, chemical and electrical method. Data of literature review show a lack of data on the impact of synergies of lower frequency on the efficiency of drying plant material. Accelerating the drying process of fruit can be achieved by combining low – temperature of drying with a synergistic lower frequency of electromagnetic field. The results of the studies on the development of technologies to accelerate the drying process of mango and papaya fruit are presented in this article. The role of the electromagnetic field, on the intensification of the drying process and on the inhibition of the microflora of mango and papaya, during drying is studied. Effect of the synergistic electromagnetic fields of different frequencies leading to the death of microorganisms, as well as the drying rate of mango and papaya fruit is analyzed. The optimal technological parameters of low frequency electromagnetic field on drying of mango and papaya fruit are determined. Biochemical changes of mango and papaya fruit during drying are given. Technological parameters of the powder mango and papaya obtained by combining low temperature treatment with the synergy of low frequencies are described
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STUDY OF WATER IN THE STRUCTURE OF SWEET PROCESSED CHEESE BY NMR RELAXOMETRY METHODS
DescriptionThe quantitative distribution and condition of the water in the structure of processed cheese are defined in this article. The sequence of entering the components in the mixture to melt in the production of sweet processed cheeses is discussed
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REGRESSION ANALYSIS TO PREDICT THE AMOUNT OF WORK WHEN REPAIRING ROADS
DescriptionThe article is an example of planning funds for the maintenance and repair of roads in the asphalt performance given their excessive wear during winter
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ANALYSIS APPROACHES TO EVALUATION OF INFORMATION PROTECTION
DescriptionThe article is devoted to an actual problem of information systems’ security assessment and the importance of objective quantitative assessment results receiving. The author offers the creation of complex system of information security with system approach, which will be used at each stage of information system’s life cycle. On the basis of this approach the author formulates the general scheme of an information security assessment of information system, and also the principles of an assessment’s carrying out method choice. In this work the existing methods of a quantitative assessment based on object-oriented methods of the system analysis, and also the objectivity of the received estimates on the basis of this approach are considered. On the basis of the carried-out analysis, serious shortcomings of the used modern techniques of an information systems’ security assessment are allocated, then the idea of the scientific and methodical device providing the increase of objectivity and complexity of an information assessment means on the basis of expert data formalization creation necessity was formulated. The possibility of this approach application for expeditious receiving a quantitative information security assessment in the conditions security threat’s dynamics changes, functioning and developments of information system is considered. The problem definition of automated information systems’ security assessment is executed, and the general technique of protection means of information in systems of this type was formulated
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Description
The article describes derivation of the regression equation which permits to determine the maximum water speed at the experimental cluster-type automatic drinking bowl which depend on temperature difference, angle of obliquity and shearing angle of the water-discharge pipe branches which are perforated by elevation
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STAND-ALONE POWER SUPPLY SYSTEM BASED ON RENEWABLE ENERGY SOURCES
DescriptionThe article discusses a promising direction, aimed at improving the operational and technical characteristics of the autonomous power supply systems, through the use of a part of their gas piston power plants, wind pow-er and solar photovoltaic installations
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THEORETICAL ASPECTS OF THE PROCESS OF PREPARATION AND DISTRIBUTION OF ROUGH FORAGES FROM ROLLS
DescriptionWe have presented an analysis of hardware designs for preparation and distribution of animal foods and also developed the economical and the mathematical model of the process of preparation and distribution of food. We have developed a constructive-technological scheme of distribution chopper and a theoretical justification of the parameters of the distribution chopper
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ENGINEERING SUPPORT PARADIGM OF SUBJECT-ORIENTED CONTROL TECHNOLOGIES
DescriptionThe article presents the basic antilogy, which is attributed to forming an engineering support paradigm of new technologies related to the subject-oriented control in the noosphere, between the demand for an automatical creative thinking of a control subject and the vigilance of society to possible adverse effects of its subjective activities. It is stated that the noosphere, which showed miracles of automation and cybernation, covers all types of human activities, excluding above original positions, which they barely touched. Uppermost it is related to the central economics problem (economy management) – the choice. The problem how to build an engineering support paradigm of subject-oriented control technologies is analyzed; it is based on the known subject-oriented control concept supplemented by concept-based models of the intuition mechanism, which assume its modeling based on formal systems with the purpose to automate control subjects mental activity. From the standpoint of Schopenhauer’s cognitive theory, a research method is developed to investigate evolution and becoming of a particular human category – engineers, which are responsible for the steady development of noosphere of Vernadsky. As a basis, a dynamic phylogenesis model of engineer’s figure was taken, including ready and effective vectors with parameters (education, intellect, skills) and (prevision, choice, emergence), respectively. The results of ontogenesis modeling are given – regularities in future engineers’ preparation as a platform for quantization and convolution of its levels based on modern mathematical methods, including those for support engineers of subjectoriented control technologies