№ 132(8), October, 2017
Public date: 31.10.2017
Archive of journal: Articles count 111, 292 kb
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DEVELOPMENT OF OPTIMAL WAY OF OBTAINING A HYDROLYZATE OF LACTIC ACID BACTERIA
Description
The work was carried out in the scientific-research laboratory of the chair of Biotechnology, Biochemistry and Biophysics of Kuban SAU, the aim of which is the search of optimal conditions of obtaining the hydrolyzates of lactic acid bacteria by thermoacid and enzymatic ways. The pure cultures of microflora of gastrointestinal tract of quails − Lactobacillus agilis, Lactobacillus intermedius and Lactobacillus salivarius were the object of researches. Under conducting the thermal acid hydrolysis there were used the same correlations of bacterial mass and water as well as procedures of clearing of hydrolyzates. The variable conditions were рН, temperature and time of hydrolysis. When carrying out the enzymatic hydrolysis in this study there was used the enzyme from the group of muramidase lysozyme. The amount of enzymes and time of carried out hydrolysis were the variable conditions under obtaining the enzymatic hydrolyzates. In the process of researches there were studied: qualitative content of total protein, peptides with М.м. < 1500, protein and peptides with M.m. > 1500, aminoacids and as well as GMDP (glucosaminilmuramilpentapeptide). On the basis of carried out experiments there was stated that according to all components of biologically active substances the thermal acid way is more effective than enzymatic. The maximum accumulation of BAA in hydrolyzates by different ways was revealed at destruction of cells Lb. intermedius. Content of GMDP in thermal acid hydrolyzate was higher than in enzymatic on 0,028 g/100 ml (51,8 %)
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04.00.00 Geological-mineralogical sciences
04.00.00 Geological-mineralogical sciences
Description
The dynamics of changes in the species diversity of radiolarians during the last 150 million years with accuracy to one geological century was determined. The basic patterns of species and taxa of high rank change had been established for the boundary between Cretaceous and Paleogene. There were revealed topomorphic features of bipolar species, which have succeeded from the Cretaceous into the Paleogene and became ancestors of Cenozoic radiolarian fauna. Changes in the species number in the boundary between Cretaceous and Paleogene periods, and also significant variations in the species diversity in Paleocene and Eocene are connected to a combination of a number of factors. The most important of those factors are geological processes, causing extensive transgressions and regressions, climate variability, the overall evolution direction of the Earth biota and competition for important chemical components for the Radiolaria’s livelihood. The emergence of powerful tropical forests on the land with their huge bio-production and bio-chemical erosion is connected to late Cretaceous era. This resulted increasing of the dissolved material proceeding into the sedimentation pool, what is confirmed by classical bauxites emergence. Because aluminium oxide and silicon oxide are geochemically connected, we can state as well about increasing of dissolved silica flow initiated development of Diatoms, which became competitors to Radiolaria in their battle for silica. The last ones are lost this battle, what caused the species decreasing. That was not a catastrophic event with immediate extinction, but a long process
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Description
The competitiveness of any company engaged in the wholesale or retail sale of goods and services is substantially determined by the level of quality of the services provided. For the accompanying business of vertically integrated oil companies, the criterion of quality service is not an exception. Currently, cafes and shops at the refueling complex are not only a convenient service for customers, but also a solid source of additional revenues for the largest oil companies, each of which seeks to make the retail network attractive to customers by offering a wide range of goods in stores, ready meals in a cafe, and related services. To satisfy the needs of the client, it is necessary to offer a wide, but rational assortment of goods at the refueling complexes. The claimed goods must always be at the refueling complexes. The lack of goods necessary for the customer on the shelf means the loss of sales and profits, the order and location of goods that are not in demand - the formation of surpluses, returns to the supplier and write-offs. This also affects the overall economic performance of the company. In this regard, the increase of logistics service is one of the priority tasks of the accompanying business of vertically integrated oil companies
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MODELING THREADS AND THREADED CONNECTIONS IN THE SYSTEM OF THE AUTOMATED DESIGNING
Description
The work was carried out not only in the scientific, but also in practical directions, the key part of which was the modeling of the system. Consideration of the presented modeling processes occurred on the basis of the delivered pedagogical experiment associated with the introduction in the discipline "Engineering Graphics" of a new tool for the military educational institution to obtain the final graphic design document. The purpose of the experiment included a comparative analysis of modeling tools (manual and machine) and their impact on the production of the final product (drawing). As a tool, the computer-aided design system Кompas-3D was used. The presented research was worked out in practical classes of the specified discipline, the theme of one of them was "Image of thread and threaded connections". With the help of the graphic editor Compass-3D, a model of the shaft and bushing with the specified thread profile was obtained, as well as the assembly unit based on them. The entire way of obtaining the above objects for convenience and ease of perception has been broken down into certain stages. The results of the pedagogical experiment were very satisfactory; the goal of the practical training was fully achieved
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Description
Results of the research on ecological safety of utilizing high clearance tractors for cultivation and harvesting of high stalk plants are presented. Purpose of the research was to decrease damaging of high stalk plants during multi-pass harvesting by tractor parts. For increasing efficiency and competitiveness of high stalk plants decreasing prime cost of production, increasing profitability and labor productivity are required. This can be achieved by introducing complex factors, which together with other factors as complex technological and technical modernization are required. Basic direction of modernization is utilizing completely new technologies and renewal of machines. Modern tractors utilized for tobacco growing have been analyzed. Basic demands for high clearance tractor which can be used for tobacco, grape and fruit trees growing have been developed. Researches on studying the tobacco plant folding during harvesting have been carried. Scheme of high clearance tractor MTZ-80 which can be assembled with machines for multi-pass harvesting of high stalk plants without their damaging has been developed. New scheme for modernization tractor MTZ-80 into high clearance model has been proposed. It can be done by changing speed reducers and forward wheels with size 11,2x20 on size 11,2x28. This will increase clearance from 470 to 840 mm
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FORMATION OF BASICS FOR EQUIPMENT UTILIZATION ON VARIOUS LEVELS OF ITS LIFE CYCLE
Description
Nowadays, in Russia the problem of utilization of self-propelled vehicles has not been solved yet. This problem remains because in Russia there is no accurate system of cooperation between developers, producers and customers of mechanical products. The article analyses Russian and foreign experience in solving this issue, gives brief information about working out Russian system of agricultural machines utilization
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DETERMINATION OF METALS CONSISTS IN REGUL, THE RAW RICE SORT
Description
The content of metals in raw rice is determined. Inversion voltammetry (IVA) was carried out in an accredited laboratory on the "Ta-Lab" device of the company "Tom-Analit" LLC according to the approved method of ERD F 16.1: 2: 2.2: 2.3.46-06. Silicon dioxide is determined according to ERD F 16.1: 2: 2.2: 3.65-10 and humidity according to GOST 5180-2015. Preparation for the IVA is illustrated. Voltammograms of the potential difference of the chloride-silver reference electrode are compared with the current strength of the indicator mercury-film electrode of electrochemical cells. It has been established that the main metals of the raw rice called Regul grown in the Krasnodar region are: copper 1.6 ± 0.4 mg/kg, plumbum 1.4 ± 0.4 mg/kg, zinc 1.9 ± 0.5 mg/kg, iron 95 mg/kg, manganese 5.2 ± 1.3 mg/kg and silicon dioxide 6.5 mg/kg. The presence of iron is associated with the wear of gravity. The content of zinc, manganese and silicon dioxide corresponds to this type of grain. The presence of copper and lead is associated with the absorption of heavy metals from the soil
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ESTIMATION OF CONSUMER PROPERTIES OF DELICACY FROM RABBIT MEAT
Description
One of perspective variants of development of the meat industry can become the production of foodstuffs from untraditional kinds of the meat raw materials such as the rabbit meat, which has a high protein content with a full number of essential amino acids, broad spectra of the mineral substances and vitamins and reduced fat content. Therefore, a demand on the rabbit meat has been increased significantly in the past years. Rabbit meat is widely used in various culinary dishes of the dietary nutrition. Rabbit meat is used in limited scales for production of sausages. The production of the delicacy sterling foodstuffs from the rabbit meat, that are capable for long-term storage, is almost not developed. The regulated requirements for quality of rolls that are included in Technical Conditions are set up in accordance with the developed recipe and technology of production of the smoked-boiled rolls from the rabbit meat. All the foodstuff samples gained high scores on the organoleptic estimation. The foodstuffs satisfy the requirements for chemical composition: mass fraction of protein – no less than 20%, mass fraction of fat – no more than 25%, mass fraction of moisture – no more than 65%. The developed delicacy foodstuffs have a high nutritional and biological value
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INNOVATIVE-TECHNOLOGICAL PREREQUISITES OF GRAIN COMPETITIVENESS IMPROVEMENT
Description
The systemic links that depend on mechanization, which affect the growth of the cost price of field crop production were proposed and their analysis was made. Three main blocks of the basic reasons for production costs growth (machinery and materials cost rise, agroecological potential underutilization, agrotechnologies non-observance) disclose agricultural machinery and agrotechnologies of field crops negative aspects that are being used, and also explain agro-potential underutilization causes on the example of the Krasnodar region. The irrational nomenclative list of machines in the current system was analyzed, which not only raises field crop production cost price, but also negatively affects the soil fertility due to its reconsolidation and spraying. Requirements for production processes mechanization means, taking into account their cost price reduction, were formulated. The possibilities for optimizing of the field works timing performed by the proposed agricultural machinery, their quality improving and product damage reducing, as well as work complexity with coinciding terms, streamlining and rhythmicity of processes were formulated. Taking into account the system approach, the imbalance between the agro-industrial complex and management forms was reflected in the weak interrelation of their interests with state interests, which also affects the cost price of production. The negative aspects of the machine system for the mechanization of field crop cultivation were revealed. A special effect should be expected from the proposed combination of technological operations in one pass of the machine across the field due to full-scale adaptations to machines, the ratio of the park of caterpillar and wheel tractors and the work complexity. On the basis of these studies, proposals for traumatization reducing of grain by harvesting equipment and the cost of crop losses from trauma, as well as the regularities of the area of damage to grain from grain vitality have been substantiated. The reasons of production cost price increase are connected with attracting investment issues and managing innovative activities of introducing priority means of mechanization (concessional lending, subsidies, etc.)
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WINTER BEEHIVES ELECTRIC HEATING ADAPTIVE TECHNOLOGY
Description
The article is devoted to increasing beekeeping’s earning capacity with rigging and automation of technological processes. Winter is the most complicated and critical period in beekeeping. It influences on further productivity of bee colony. Winter period has specificity – bees are gathering in winter cluster and sustaining temperature in 24…32 °С range inside. This temperature is depending on fluctuation of outside air temperature. For passing winter without complication electric heating is used. Cluster geometry in winter is changing constantly and for optimal regime of electric heating we need to take it into account. Additionally, bees’ activity changing beehive’s microclimate and it’s important to know when beehive’s microclimate adaptive control system is developed. Conducted researches allow us to get basic equations which characterizes microclimate with taking into account of winter cluster’s variable geometry. The equations establish linkage basic parameters of beehive, winter cluster, internal air between outdoor air. Simulation results may be used for adaptive heating control system programming. Additionally, it may be used in special-purpose software for beehive’s microclimate simulation
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