№ 112(8), October, 2015
Public date: 30.10.2015
Archive of journal: Articles count 151, 381 kb
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ANALYTICAL RESEARCH OF THE MOVEMENT OF COMPONENTS OF FORAGES IN RELATIVE SCREW DRUMS
DescriptionThe article presents the results of the analytical research of the movement of components of forages in screw drums on the example of relative reels of Rts7.1.A and Rts5.1a having the next feature: on the perimeter, we have obviously expressed conditionally cylindrical screw lines formed. The carried-out analysis of the movement of particles of components of forages in relative screw drums and the executed review of mathematical models in relation to the movement of components of forages in relative screw drums, including a model of a continuous stream of particles of components of forages, a model of power balance of the movement of a continuous stream of particles of components of forages, a model of the movement of components of forages as a material point has been shown. Analytical dependences for determination of longitudinal speed of movement of components of forages and the length of a relative screw drum are presented. The article examines specified settlement models of the movement of components of forages in relative screw drums
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HISTORY OF THE DONETS RIDGE PETROPHYTIC VEGETATION STUDY (A REVIEW ARTICLE)
DescriptionThe article reveals historical aspect of the Donets Ridge petrophytic vegetation study. The stages of formation of concepts and terms in the typology of vegetation of the rocky outcrops of the steppe zone
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DESCRIPTION OF CERTAIN ASPECTS OF THE PRODUCTION POTENTIAL OF SOILS TAMAN PENINSULA
DescriptionThe work presents the results of the scientific research in the Taman Peninsula soil properties. We carry out the historic review of the studies in the Taman Peninsula soils, and its geological structure. We present morphological characteristics of the soil profile for the southern, calcareous, ultra heavy loam chernozem developed from the loessial loams and forming genetic horizons. The studies of the humus content in the soils show the associations between its percentage and the type and intensity of the agricultural use. Studies of the soils structure and composition demonstrate marked aggravation of the soils physical properties caused by grape growing. The best results of the particle size analysis have been achieved for the woodland soils. In woodlands, after their establishment, the soils under the grass and crown layers develop free of the anthropogenic impact. We register self-supporting growth of organic matter and natural processes of soil fertility recovery; therefore, such soils are characterized with a greater content of organic matter as compared to the soils under grape plantings cultivated in the monoculture regime. Reduced soil organic matter (humus) content in vineyards results from the disturbed biological interchange of the matter and increased anthropogenic impact causing erosion processes
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THE VARIABILITY OF TAXUS BACCATA CYPRESS CONES AT POPULATION OF DAGESTAN
DescriptionIn the populations of Taxus baccata of Foothills and Inside Mountain Dagestan, we have studied intra- and interpopulation variability of morphological characters of yew berry. The article has a contribution of interpopulation differences in the feature of "diameter of funnel" with the highest rates in Buynaksk population and dependency of the form of yew berry from this feature. According to the results of discriminant analysis, we have revealed a distinction in populations on this basis, although the classification matrix has not given 100% of the forecast for any of them. It is found, that the seeds of Khunzah population have relatively large dimensions and yew berry has more flattened shape compared to piedmont populations, while the differences in populations based on seeds are more pronounced than based on yew berry at low volatility of the characteristics of the first indicators. It is shown, that the characteristics of seeds and yew berry of Khunzakh population indicate the presence of certain genetic differences between populations inside mountain and foothills, and that the higher dissemination activity of first population is aimed at self-preservation, due to the less favorable conditions for the species. It is expected that the low variability of the average values for yew berries of cypress characteristics indicates the stability of the soil and climatic conditions of its habitats
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Description
The article is concerned with the features of Lavandula’s angustifolia vegetative propagation with methods of the propagation by herbaceous cuttings and of the annual woody cutting. The dependence of Lavandula’s varieties Sineva and Vdala rooting of cutting and the cutting grafting period and the age of the mother plantation was established. In the fixed years, the rooting rate of cuttings is 58-67%. The maximum annual hardwood cuttings rooting was observed from the fifth to the seventh year of the cuttings’ workpiece (75-77%). The highest rooting rate of green cuttings belonging to Vdala sort (80%) is observed in the 3-4th years of use the mother plantation. The best result for rooting rate by the annual woody cutting showed Lavandula’s mother plantation, which belongs to Vdala sort and was being cultivated from 3rd to 6th year. The rooting of Lavandula’s angustifolia cuttings depends on weather conditions; during drought years the rooting of green cuttings is considerably reduced. During Lavandula’s rooting cuttings it is necessary to take into account the biological characteristics of each variety
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Description
The study was performed to genotype some commercial wine yeast strains using the assay of Interdelta genomic sequences. Experimental parameters of PCR to identify were optimized and optimal simplified method of DNA extraction from dried preparations of yeast cultures was define. Proven method showed a high level of resolution and can be used for the analysis of genetic diversity wine yeast in combination with SSR-markers
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Description
In this article, we have presented a number of modeling experiments to investigate the chemical pollution of brown calcareous soil. It assesses the stability of brown calcareous soil of a nature reserve called Utrish to contamination with heavy metals in biological parameters. Pollution of brown calcareous soil with Cr, Cu, Ni, Pb and oil causes a significant reduction in biological parameters. The degree of reduction depends on the nature of the contaminant and its concentration in the soil. The study showed that the indicators used in the biological condition of the soil, could be recommended for use for diagnosis, monitoring, and regulation of chemical pollution of brown soil. According to the degree of resistance to chemical contamination, the brown soils of Russia form the following series: typical brown - brown carbonate - brown leached
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Description
We have investigated the influence of nickel oxide in the amount 100, 1000 mg/kg of the soil (1, 10 MPC), combined with the influence of variation magnetic field with induction of 50, 100 and 650 μT power frequency of 50 Hz on the enzyme activity and phytotoxity of the southern chernozem. We have established significant reduction of enzyme activity of catalase and length of roots after the influence of the variation of magnetic fields. Pollution by nickel as an independent factor caused stimulation of enzyme activity of a dehydrogenaze and length of roots of radish. The greatest inhibition of the activity of all indicators was observed at joint influence of magnetic fields and pollution by nickel of concentration of 1 maximum permissible concentration (1 MPC). Enzyme activity of dehydrogenaze was significantly stimulated (p
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Description
Large agricultural load on the steppe landscapes leads to the transformation of ecosystems and effect on all their components. Transformation of lands into laylands leads to a gradual restoration of anthropogenically disturbed steppe ecosystems. Studies that focus on the research of comprehensive processes in the territory of laylands are extremely relevant today. Herpetobiont fauna is one of the important characteristics of ecology and biology of soils. Herpetobiont Coleoptera can serve as indicators in the study of processes occurring in postagrogenic soils.The article presents the results of the study of changes in mesofauna, composition and structure of complexes of the gerpetobiont Coleoptera of ordinary black soils in natural succession series of different-age laylands. We also evaluated the degree of faunistic similarity of plots of laylands and allocated dominant species. Carabidae and Tenebrionidae are the basis of complex Coleoptera in the investigated laylands. The article shows that such indicators as the number of individuals, species, families of beetles and their dynamic density are depended on the age of the layland. In addition, the indices of biodiversity (Margalef and Shannon) and dominance (Simpson) are also connected with the age of plots of laylands
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CHANGES IN BIOLOGICAL PROPERTIES OF ORDINARY BLACK SOILS AT GLEYISATION (MODEL EXPERIMENT)
DescriptionThe article presents the results of laboratory modeling of gleyisation and its effect on the biological properties of soils with stagnant regime in ordinary black soils. Gleyisation is a complex biochemical process that occurs under oxygen reduction conditions. Anaerobic microorganisms, the presence of organic substances, and the constant or prolonged waterlogging of individual horizons or the entire soil profile promote gleyisation. Model experiments revealed that gleyisation increase the total number of bacteria and suppresses number of actinomycetes, micromycetes and growth of fungal mycelium. Gleyisation decreases the activity of oxidoreductases and increases the hydrolases activity. In addition, the second content of humus slightly increases and active acidity (pH) changes to neutral. Accumulation of large amounts of iron oxide (II) in soil is revealed