Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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161 kb

CONTROL OF NON-METALS, AROMATIC HYDROCARBONS AND MINERALS IN GROUNDWATER OIL REFINERY IN TUAPSE

abstract 1251701005 issue 125 pp. 112 – 122 31.01.2017 ru 10
Groundwater is the source of drinking water in rural areas, it is a part of urban water and it is formed due to the filtering of cross waters in a stratified medium permeable rocks. The impact of anthropogenic factors leads to changes in the qualitative composition of groundwater. The article presents the results of industrial environmental monitoring of ground water refinery of Tuapse in the period from 2012 to 2016 according to its content of ammonium-nitrogen, nitrate-ions, sulphates, formaldehyde, toluene, xylene and ethylbenzene. Analysis of groundwater sampled from wells located at the site of the refinery was conducted by a factory-certified laboratory. The content of the components meet the regulatory indicators. We examine the effects of industrial toxicants on the human body
259 kb

PREPARATION OF LUMPY VEGETABLE WASTE IN PRODUCTION OF MODIFIED BUILDING MATERIAL

abstract 1251701008 issue 125 pp. 141 – 150 31.01.2017 ru 11
Rational and efficient use of natural resources is an important element of sustainable development. Waste is a significant loss of material and energy resources. Recycling and disposal of waste can be a cause of pollution, harmful substances and infections on people. Index of waste production is closely linked to the level of economic activity in the country and sums up the structures of production and consumption that are formed in the society. Reduction of capacity size of waste production is a measure of promotion of the economy sector to less material-intensive structures of production and consumption. Phytogenic wastes are mostly formed in the timber industry, and also are pollutant source of environment. Continuing production and accumulation of waste is a serious environmental problem. The main reason for these circumstances involves insufficiency of power in added-value wood processing, that increase the problem of integrated utilization of low-grade wood, small wood and demolition wood. As a result, the main competitive products in the timber complex of the Krasnoyarsk Territory are industrial wood and roundwood. Solution to these topical issues of optimum use of the resulting waste in the Krasnoyarsk Territory needs to be solved with the help of mathematical modeling of process optimization of recycling lumpy plant waste. Rational use of lump plant waste is one of the most serious and, unfortunately, unresolved problem
188 kb

MATHEMATICAL MODELING IN TECHNOLOGY AND QUALITY EVALUATION OF FOOD PRODUCTS

abstract 1251701010 issue 125 pp. 164 – 179 31.01.2017 ru 10
The analysis of scientific research in the field of food technologies has shown that mathematical modeling is applied in the following directions: adjustment of the modes of technological processes, development of compounding and quality evaluation of ready-made products, and also prediction of shelf life of new products during launching. Models of variance and regression analysis with application of methods of mathematical planning of experiment are most relevant in describing the processes of food production. The article contains the results of our own research about creating composition of fish preserves made of combined minced of fishes, bad-ripening and ripening in salting. The mathematical models of the dependence of organoleptic, structural-mechanical characteristics and characteristics of ripening of preserves on technological factors are presented. The dimensionless generalized index of quality was modeled and the composition of minced was optimized on the basis of its dynamics. It was established, that preserves which contain 42% herring Atlantic and 4,8% salt, have the best organoleptic, structural-mechanical and ripening characteristics. The regression model was developed, which determines the shelf life of wide range of fish preserves, depending on factors affecting it: storage temperature, acidity of the fill, proteolytic activity of the enzyme system of muscle tissue and also the speed of fish ripening, caused by addition of various functional and technological additives. Testing of the model shown, that calculated data of the shelf life of fish preserves correlate with the data obtained experimentally
138 kb

FULFILLMENT OF TQM PRINCIPALS FOR PURPOSES OF SUPPLYING QUALITY PREPARATION OF SPECIALISTS IN REGIONAL MULTI-FACETED UNIVERSITIES

abstract 1251701012 issue 125 pp. 186 – 195 31.01.2017 ru 4
The article examines different aspects of preparing qualified workforce for higher-technology industry. The importance of this issue is centered on accomplishing priority projects in aviation, electronics, defense industries, etc. The main goal of preparing a workforce today is to increase the quality of specialists, not their quantity. This cannot be achieved without a development and implementation of effective management systems that are based on TQM principles. The article proposes main events geared at achieving the goal of developing potentials of the industry workforce. It is noted that the goal of the development of effective infrastructure that will supply staff to higher technology sector cannot be achieved within the limitations of a single given institution, it needs participation and consolidation of efforts of multiple participants. The article examines the main issues of modern regional multi-profile universities, which must become the main link in the system of “Education – science – production” to ensure workforce training for advanced development industries in the region, employ hands on research jointly with the facilities and seamlessly facilitate the development of the infrastructure for effective commercialization of innovations. The article proposes methods of developing a workforce potential on the grounds of regional multi-faceted universities as the main element of infrastructure of workforce supply of the higher- technology sectors of the industry. The authors of the article determine, they believe, the most promising forms of symbiosis between the educational and industry establishments
235 kb

HYDRAULIC DESIGN OF LINEARLY DISTRIBUTED RELEASES OF STORED WATER DISCHARGES

abstract 1251701013 issue 125 pp. 196 – 209 31.01.2017 ru 4
The purpose of the article is to develop methods for hydraulic design of extreme discharges and water depths in critical gage lines of waterways diverting water from spillways for the accepted law to regulate linearly distributed releases of stored water discharges. The task of control for linearly distributed releases of stored water discharges is based on hydraulic design for the process of propagation and transformation of long waves described with Saint Venant equations. These equations are nonlinear and have no accurate solution in general case. To get approximate solutions they are linearized. It is established that the task of integration for these equations supposes to get their preliminary solution in the form of complete integral. Applying the complete integral theory we get analytical solution that describe the process of transformation for one direction waves moving in infinitely long prism canal of semi-bounded extent with initial uniform regime of water flow. An example of changes in both water discharge and flow depths in two fixed downstream gage lines of hydraulic works at the distance of 5000 and 10000 m from the initial gage line is presented. Hydraulic design was carried out according to the derived analytical formulas accepted as an example classical method of characteristics that is considered as analogous. Comparison of the design results on two methods allowed to determine the maximum relative error that does not exceeds 3,5 % for the design discharges and water depths. Introduction of the developed method for hydraulic design of linearly distributed releases of discharges in waterways diverting water from spillways will make it possible to optimize idle and non-technological stored water discharges
266 kb

PARAMETRIC IDENTIFICATION OF THE PROCESS OF DRYING CORRUGATED BOARD

abstract 1251701016 issue 125 pp. 235 – 246 31.01.2017 ru 4
The article identifies the unknown parameters of the transfer functions of governing and operating channels of the control object. To do this, we have carried out processing of results of experiments. It is shown that there is not only dynamic but also static nonlinearity of the control object, expressed in physically less persistence processes increase the pressure by increasing the opening of the steam regulating valve compared with the opposite processes
148 kb

IMPACT OF OIL AND OIL PRODUCTS ON THE ENVIRONMENT

abstract 1251701022 issue 125 pp. 309 – 318 31.01.2017 ru 4
This article is devoted to the influence of petroleum and petroleum products on the natural environment. There are the chemical composition of petroleum and the reasons for its detrimental impact on natural components. The pathways of petroleum and petroleum products in the natural environment were listed. There is a characteristic of the impact of these substances on all components of the natural environment, including soil, hydrosphere, living organisms. Consequences of such impact on each of the elements were listed. There are methods of fighting oil pollution and the need to make their application more expressed, as well as developing new, more effective ways
310 kb

STUDY OF THE INFLUENCE OF EXTERNAL LINKS RIGIDITY OF A CLASS 1.4 WHEELED TRACTOR ON THE UNIT’S ACCELERATION

abstract 1251701024 issue 125 pp. 346 – 361 31.01.2017 ru 4
The aim of the article is theoretical and experi¬mental confirmation of the possibility to improve the acceleration performance of tractor units by in¬stalling a tow hitch with variable stiffness. Application of speed tractors in agricultural pro¬duction meets a number of difficulties associated with the unsteady processes, especially while accel¬erating of machine and tractor units. The resulting large inertial loads during acceleration lead to loss of engine power, due to which the machine and tractor unit operates with less performance and economy. Our analysis of published studies shows that the acceleration performance of tractor units is greatly influenced by the rigidity of external links in the form of coupling devices installed between the trac¬tor and the agricultural machine. The design of the tow hitch with variable nonlinear stiffness for class 1.4 tractors is offered. The results of theoretical and experimental studies on the effect of the proposed tow hitch with variable nonlinear stiffness on the acceleration capabilities of machine and tractor units based on class 1.4 tractor are shown. Based on the analysis of characteristics obtained by the analytical and experimental ways, it was proved that the use of the hitch with a variable non-linear stiffness on class 1.4 tractor helps to improve the acceleration performance of the machine and tractor unit
324 kb

MODELING OF CONTACT FORCES IN THE CONCENTRATED FORAGES COMPONENTS’ MOVEMENT IN RELATIVE SCREW DRUMS

abstract 1251701026 issue 125 pp. 377 – 396 31.01.2017 ru 4
Analytical research results of contact forces of interaction of concentrated forages components’ particles in their movement in relative screw drums are presented. It is shown that contact forces – the most difficult forces by their nature; result from stochastic (probable) collision of bulks particles and in particular of concentrated forages components’ particles. Therefore the main objective of this modeling – to describe the stochastic phenomena of the so-called conditional contacts of particles for which some assumptions are accepted, for example, in forcing of mass of concentrated forages components’ particles by the walls of the rotating relative screw drum in the radial direction there will simultaneously arise contacts caused by geometry of a screw drum, i.e. the property of its walls is pressure transfer in relation to the mass of particles in the direction of the modeled movement. Schemes of engagement of concentrated forages components’ particles contacting in the relative screw drum, the probable schedule of sliding speeds values change in their consecutive contacting, their density distribution are demonstrated
579 kb

INVESTIGATION OF INDEXES OF QUALITY MANAGEMENT OF ELECTRIC- TECHNOLOGICAL PROCESS OF OZONATION OF POULTRY FACTORIES EGG-STOREHOUSES

abstract 1251701029 issue 125 pp. 429 – 442 31.01.2017 ru 4
Ozonization of incubation eggs when storing at an egg-storehouse is well included in technological process of production and egg sorting. Ozone influences absolutely all known viruses and microbes. Larger chickens are hatched from ozone-treated eggs, safety of chickens is increased. However, the present technology did not obtain the wide spreading in the sphere of poultry farming because of uneven concentration due to the volume of treated premises. In the result of mathematical modeling there was worked out the system of management with electrical and technological process of ozonization of egg-storehouses of poultry factories, indexes of quality the work of which was assessed in the system of automated projecting of logical-dynamic systems SimInTech. The summarized integral mean-square index (J = 9,7%) decreased on 19,3 % in comparison with the variant without regulation (J = 29%), that testifies on enough qualitative regulation of distribution of ozone concentration in an egg-storehouse and satisfies the shown acceptable value of the present index (no more 15%). On the basis of produced researches there was created the nomogram determining the tension of charging facility and discharge of a ventilator of electric ozonator in dependence on treated egg amount. In accordance with technical solutions there was worked out the principal electric circuit with system of electric equipment of electric technological process of ozonization of egg-storehouses of poultry factories on the basis of microcontroller ATmega8
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