South Federal University
Author list of organization
List of articles written by the authors of the organization
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CHANGE OF BIOLOGICAL ACTIVITY OF SOILS OF NORTH CAUCASUS IN RELATION TO CLIMATE
04.00.00 Geological-mineralogical sciences
DescriptionClimatic conditions have considerable impact on biological properties of soils of the South of Russia. From all studied indicators the most dependent on climate there was maintenance of a humus and activity of polyphenoloxidases and peroxidases. Values of the integrated indicator of a biological condition (IIBC) on a profile of soils decrease in process of increase in an amount of precipitation, decrease in temperature, and increase in height of the district in next order: meadow subalpine → brown forest → gray forest → black leached soil → black typical soil → black ordinary soi
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INFLUENCE OF MALIGNIZATIONS LEVEL OF ASTROCYTIC HUMAN BRAIN TUMOR ON THE EXPRESSION OF CONNEXIN-43
DescriptionStudy was performed on 12 samples of astrocytic human brain tumors, which differ by the level of malignancy and histological indications. The study was conducted with the method of immunohistochemistry using a commercially available antibody anti-connexin-43 (Cx 43), a prior test of which was carried out on myocardium tissue of rats (positive control). The study showed that with the increasing of malignant level of astrocytomas, there was marked the decreased level of connexin-43 expression of, which is apparently to be associated with the destruction of intercellular gap junctions in tumor tissue
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POSSIBILITIES OF THE EVOLUTION OF SOFTWARE SYSTEM OF MANAGEMENT DECISIONS SUPPORT
DescriptionThe article discusses the implementation of a software system to support management decisions designed to organize the educational process in higher educational institutions. We have completed argumentation of the development and application of a software system. This system was developed in the department of the computer engineering of Institute of computer technologies and information security, Southern Federal University (SFeDU). The article describes the algorithm of functioning of the system and its structure. The software system includes several subsystems and three external modules: "Personal load", "Materials to the schedule", "Work Plan of the Department". It provides basic information about the developed modules, discusses their purpose and functionality. Initial data for modules were defined. The results of the work of modules are confirmed by illustrations. The article describes the work of the subsystems composing the software system. These are a subsystem of data processing, a subsystem of decision-making and a subsystem of input/output. The structure of all subsystems is detailed at the block level, the purpose of blocks was determined. Resulting files of the module work are generated in an XML-format and can be converted into an Excel-format that considerably facilitates a task of their subsequent use and processing. The system and the additional module possess the convenient functional interface and, considering facilities on adjustment for the concrete user, can be used in structural divisions of various universities
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ECOSYSTEM DEGRADATION OF THE LIMESTONE MASSIFS OF WESTERN CAUCASUS AFTER DEFORESTATION
DescriptionSignificant changes in mountain ecosystems occur after deforestation on limestone massifs of the Western Caucasus. Tall-mountain-meadow vegetation with a large variety of species formed at low and medium soil disturbance 3 years after logging. Physical and biological properties of calcareous soils also vary greatly. The values of biological activity decrease at the maximum load is more than 10 times. Biological activity is increased by 20-50% or more cutting stations with low disorders. Biological properties of soils (especially the enzymatic activity) are very sensitive indicators of changes that have occurred as a result of logging. Changes in the activity of soil hydrolases different from changing oxidase activity at different times after logging
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DYNAMICS OF RESTORATION OF BIOLOGICAL PROPERTIES OF BLACK SOILS POLLUTED WITH OIL
DescriptionNegative impact of oil on biological properties of soils right after pollution is shown in the article. Eventually, there is their restoration. However, even in some years after pollution, the biological properties of soils aren't restored completely
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DYNAMICS OF ENZYME’S ACTIVITY OF BLACK SOIL WHEN POLLUTING WITH ANTIBIOTICS
06.00.00 Agricultural sciences
DescriptionIn the article, we have studied the effect of antibiotics on enzyme’s activity of black soil. Introduction of the high doses (600 mg/kg) of antibiotics benzylpenicillin, nystatin) leads to considerable decrease in enzyme’s activity of soils. The class of hydrolyses is most sensi-tive to the action of antibiotics, their activity decreases for 50-70% from control values, the class of oxidore-ductase is least sensitive (10-40%). Antibiotic’s action on enzyme’s pool of soils has the prolonged character
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RELIABILITY OF ESTIMATION OF HEAVY METAL CONTAMINATION IN SOILS
DescriptionThere have been examined the methods for estimating the degree of heavy metal contamination in soils. There have been revealed some discrepancies that concern estimation of soil contamination degree and calculation of consolidated figures for chemical elements contamination in soils stated in effective normative documents. The formulas for estimation of summary soil contamination stated in normative documents reveals considerable discrepancies that do not let give an objective estimation of dangerous concentration of heavy metal. We offer estimation of concentration of several chemical elements not by summarizing their concentration but by estimating their excess in relation to rock or its concentration in soil taken as a background
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DEPENDENCE OF VEGETATION STATE ON FAIRWAYS LAWN OF THE GOLF COURSES FROM ENVIRONMENTAL FACTORS
DescriptionThe dependence of the grass cover state of the golf courses from the soil properties was observed. The soils named “replantozem” are the basic soil of gaming zone of "fairway". It is shown, that the heavy particle size structure with a predominance of clay particles is unfavorable to the lawn. During the golf course construction, natural soils were ameliorated with high sand content. This new made soils ensure the formation of better grass coverage despite the low humus content
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REGULARITIES OF THE SEASONAL DEVELOPMENT OF WOODY PLANTS AT INTRODUCTION IN ROSTOV-ON-DON
DescriptionThe article presents the average and optimal calendar dates of the main phenological phases exotic woody angiosperms in Rostov-on-Don. We assess the level of variability timing of individual phenological phases. The data obtained can be used to diagnose the prospects of exotic woody plants for the regional culture
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CHANGE OF BIOLOGICAL PROPERTIES OF SOILS OF ROSTOV-ON-DON WITH HEAVY METAL POLLUTION
DescriptionThe article investigates the level of heavy metal con-tamination of soils of different functional zones in Rostov-on-Don: parklands, crossroads and industrial zone. Dependence is considered the level of soil bio-logical activity in soil from heavy metals