Scientific Journal of KubSAU

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

THE CONCEPT OF UNINTERRUPTED POWER SUPPLY SYSTEMS

abstract 1191605081 issue 119 pp. 1159 – 1179 31.05.2016 ru 636
We have revealed the main reasons for interruptions in power supply to consumers of electricity. To improve the reliability and the efficiency of power supply for responsible consumers, we have proposed to develop energy efficient combined energy-saving systems for uninterrupted power supply with use of renewable energy sources. The article lists major principles of the development of such systems; it shows the necessity of constructing a generalized schema that contains the possible types and the sources of electric power converters. It also reveals the modern requirements to systems of uninterrupted energy supply. To improve the operational and technical characteristics of the uninterruptible power supply, it has been proposed to use a new circuitry that includes a contactless power generators, the direct frequency converters used to stabilize the voltage and frequency of the current generators of wind turbines, static converters made with the use of single-phase transformers with rotating magnetic field, universal static converters that can operate in the regimes of known types of converters. The article presents features of the modular construction of systems of uninterrupted energy supply and optimization of their structural decisions on key performance criteria. It shows the algorithm of synthesis of structural designs of combined systems of uninterrupted power supply. An important step for further research with the aim of improving operational and technical characteristics of the combination of uninterrupted power supply systems is the mathematical modeling of physical processes in power circuits of the system in both normal and emergency modes of operation
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OPTIMIZATION OF A CALCULATION METHOD FOR PILEWORK PROTECTIVE STRUCTURES "STREAMLINED" BY LANDSLIDE CLAY SOILS

abstract 1191605083 issue 119 pp. 1200 – 1216 31.05.2016 ru 578
Expansion and increasing of the Krasnodar region transport infrastructure during the construction of the Olympic facilities together with the new land development created a necessity for construction in the remote areas of landslide slopes with the complex engineering-geological conditions. Constructions of bored piles, jammed by in nondisplaceable soil are often used as one of the measures for the protection of surface rocks landslide movement and tightening the slope weak sections. Such constructive solution is often being considered the best, and sometimes the only acceptable solution. When designing engineering protection it is recommended to consider the use of a number of active protection activities, aimed at the landslide processes stabilization. However, in case of construction production impossibility due to terms of organization, it is necessary to provide passive protection which would secure that the landslide streamlines the construction. Currently, the mechanism of the soil landslides interaction with constructions of detached objects spot protection isn’t studied enough. Known methods adopt simplifications and assumptions which lead to definite significant errors in the design of slope protection structures. Security and reliability of such structures can only be achieved with the adoption of high factor of safety values. This leads to increased material consumption and labor input for the erection of defensive structures also reduces the economic efficiency of these structures. In addition the process of designing protective structures in the Krasnodar region is further complicated by fact that the landslide of construction area is mainly folded by flowing clay soils
219 kb

COLOR- SENSITIZED SOLAR ELEMENTS

abstract 1191605093 issue 119 pp. 1378 – 1389 31.05.2016 ru 440
Photovoltaic devices are a promising solution to the energy crisis, because they generate electricity directly from sunlight, without producing CO2. While color-sensitized batteries are the most studied element, mainly due to its low cost and high efficiency solar energy conversion into electricity. Until recently, the color-sensitized solar cells performance was less than 1%, however, the use of titanium dioxide as the anode material have greatly raised their efficiency. The advantages of titanium dioxide is primarily in the low cost, but its use provides high light capture efficiency, with external quantum efficiency (efficiency incident photon - charge), usually in the range of 60-90% using nanocrystal forms in comparison with
475 kb

THE ARCHITECTURE OF A CONTROL SYSTEM FOR RELATIONSHIP BETWEEN THE COMPANY AND CUSTOMERS BASED ON CLOUD COMPUTING SERVICE

abstract 1191605096 issue 119 pp. 1442 – 1452 31.05.2016 ru 654
The control system of relationship between enterprises and customers (CRM) is one of the important components of an automated enterprise management system. For construction organizations there is a need in CRM architecture, providing linking of basic system objects (documents, artists, clients, events) to the company's projects. The most important trend in the development of such systems is the use of cloud technologies. Using the hybrid cloud technology provides a flexible and controlled access to resources and high availability. Internal accounting systems are implemented in the private sector of a hybrid cloud, CRM and web interfaces are placed in the public section. The implementation of the synchronization data module in the public part of a hybrid cloud over HTTPS ensures the security and confidentiality of the transmission
233 kb

FEATURES OF LAYING SEED NURSERIES OF LONG-GRAINED RICE VARIETIES FOR INCREASING VOLUMES OF SEEDS PRODUCED IN THE RUSSIAN FEDERATION

abstract 1191605007 issue 119 pp. 117 – 133 31.05.2016 ru 685
The article reviews four variants of laying nurseries of primary branches of seed production of long-grained rice varieties of the Kuban breeding taking into account their biological features, plots area ranges from 0,7 m2 to 1,1 m2 , seeding rate for one family – from 100 pcs./m 2 to 170 pcs./m2 . We have studied traits of long-grained rice varieties of the Kuban breeding - Ivushka, Avstral, Kurazh, affecting the yield and quality of seeds: yield, multiplication factor and fractional composition of seeds depending on laying multiplication nursery of first year progeny. The differences between varieties by the type of tillering, vigor, germination of seeds depending on planting system are shown. Optimal way for laying seed nurseries is found: for long-grained varieties with medium tillering (Kurazh type) – row length – 3,3 m and seeding rate – 120 caryopses/m2 ; for those with intensive tillering (Ivushka type) – row length – 3,8 m and seeding rate - 120 caryopses/m2 . This will allow using mechanical method of sowing using selective cassette seeding-machine in the primary seed production, reducing cost of seed production and increasing efficiency of labor, increasing volume of seed production of long-grained rice varieties in short terms and accelerating their implementation in the Kuban region for import substitution
861 kb

INFLUENCE OF DIFFERENT SYSTEMS OF BASIC TREATMENT CONDUCTED UNDER SUNFLOWERS ON PHYSICAL PROPERTIES OF SOIL

abstract 1191605017 issue 119 pp. 254 – 263 31.05.2016 ru 748
In the article, we present results of the research of the influence of various processings of soil on accumulation of productive moisture in autumn and winter periods
217 kb

WAYS OF REDUCTION OF ADVERSE FEEDING EFFECT ON ANIMALS

abstract 1191605021 issue 119 pp. 293 – 312 31.05.2016 ru 446
The successful development of livestock requires maintaining and further increasing of the genetic potential, the basis for the manifestation of which is the adequite balanced feeding. Currently, one of the most urgent problems of livestock breeding is to find ways for reduction of the negative impact of various feeding factors on the animals. In industrial conditions, it is difficult to exclude various feed stresses, which lead to a decrease in productivity, survival rate and ill health of animals and poultry. The work summarizes the research in this direction, taking into account the achievements of domestic and foreign authors. A serious problem of feed producing companies and livestock farms is the grain and compound feed affection with fungi and their metabolic products - mycotoxins. Based on the results of the research of several authors, the ways of solving this problem were identified and recommendations on the reduction of the negative effect on the body were provided. It is noted, that one of the best and effective ways to reduce the negative effect of mycotoxins on the body is a method of administration of adsorbents in animal feed. But it should be taken into consideration that in order to maximize the protection against mycotoxins and minimize their harmful effects on the body of animals it is necessary to use preparations, which include adsorbents of organic and inorganic nature, as well as to comply with the dosage of their introduction into the diets of animals and poultry.The progressive forms of preparations of a new generation, solving problems of the negative impact of feeding factors, include probiotics, which contain some bacteria, immobilized on the solid particles, so that they inhabit the intestine faster. Modern biological complexes have immune correcting properties, increase non-specific resistance of the organism, normalize microbiocenosis of gastrointestinal tract, and stimulate the functional activity of the digestive system. Therefore, it is necessary to use feed additives with detoxification properties as part of animal compound feed, according to recommendations on their application in appropriate dosages
340 kb

DYNAMICS OF MOISTURE IN SOIL AND EFFICIENCY OF ITS USE BY SOY BEANS UNDER DIFFERENT WAYS OF MAIN SOIL TREATMENT AND DOSES OF MINERAL FERTILIZERS

abstract 1191605040 issue 119 pp. 553 – 566 31.05.2016 ru 705
In the article there were given the results of researches for 20110–2012 obtained of many years stationary experience of the chair of general and irrigated land management of Kuban State Agrarian University on study of main soil treatment influence and doses of mineral fertilizers under soy beans on dynamics of moisture in soil and efficiency of its use by this cultivar. There was determined that from all studied variants the ploughing on 20–22 cm led to the higher accumulation of moisture for autumn-winter period. The decrease of productive moisture reserves on 6-9 % was observed on the types with surface treatment and direct sowing. The increase of soil treatment depth and doses of mineral fertilizers promoted to the better accessibility of moisture during vegetation period and correspondently to their greater expenses. Moreover, there was revealed the more rational use of water by soy beans under mouldboard soil treatment and introduction of mineral fertilizers in the dose of N90P120, it discovers the high effectiveness of present agricultural methods. The highest productivity of soy beans in the experience was achieved by means of ploughing on 20–22 cm and introduction of mineral fertilizers as a main type of soil treatment
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PRODUCTIVITY AND QUALITY OF BERRIES BY STRAWBERRY HYBRIDS OF NCRRIHV BREEDING

abstract 1191605048 issue 119 pp. 666 – 676 31.05.2016 ru 606
The article presents the results of evaluation of 20 strawberry hybrids by breeding in the NCRRIHV on the traits of productivity and chemical composition of berries. The results of the grouping of studied hybrids at the number of berries per plant and average weight of berries were shown. We have also highlighted the best hybrids, that shows the maximum number of berries (pcs per plant) – 2-10-06 Firework × Honey, 5-2- 06 Primella × Marmolada and average weight of berries (g) - 5-1-12 Elsanta × Alba, 11-7-06 Molling Pandora × Marmolada, 7-1-12 Elsanta × Camarosa, 6-1-06 Vesnyanka × Primella, 2-4-12 Eros × Camarosa, 3-4- 12 Belrubi × Camarosa. It was found that the integrated combination of high productivity characteristic values (the number of berries per plant and average weight of berries) are not mentioned in any of the hybrid selections. Study of the traits of berries quality in strawberry hybrids showed that they contain from 6,3 to 11,4% soluble solids, from 4,8 to 8,6% sugar, from 0,62 to 1,30% acid, the sugar-acid ratio It varies from 4,0 to 8,8 relative units. Almost all the studied hybrids accumulate in the berries more vitamin C in comparison with the control variety Honey. According to the complex biochemical parameters highlighted hybrids 2-9-12 Eros × Camarosa, 2-4-12 Eros × Camarosa, 5- 3-12 Elsanta × Alba, 3-1-12 Belrubi × Camarosa
161 kb

INFLUENCE OF THE WAYS OF THE BASIC SOIL CULTIVATION ON AGRO-PHYSICAL PROPERTIES OF REGULAR BLACK SOIL AND YIELDS OF SUNFLOWER

abstract 1191605056 issue 119 pp. 778 – 789 31.05.2016 ru 575
The article presents the results of the researches on the study of the different systems of basic treatment of soil under sunflower’s density, aggregate composition, supplies of productive moisture on regular black soil of the Krasnodar region
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