192 research outputs found

    Extracting Pollen, Spores, and Algae from Paleocene and Eocene Sediments

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    https://scholarworks.moreheadstate.edu/student_scholarship_posters/1147/thumbnail.jp

    Agroecological and agroeconomic aspects of the grain and grain legumes (pulses) yield dynamic within the Dnipropetrovsk region (period 1966–2016)

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    This paper reveals the spatial and temporal patterns of grain and leguminous crops yield dynamics in Dnipropetrovsk region and evaluates the role of agro-environmental and agro-economic factors in their formation. Crop data were obtained from the State Statistics Service of Ukraine. The data of the grain and grain legumes (pulses) yield during 1966–2016 on average per year in the administrative districts of Dnipropetrovsk region was analysed. The obtained data indicate that average yields of cereals and leguminous crops within Dnipropetrovsk region varies from 24.3 to 33.4 CWT/ha. The smallest interannual variability in yield is typical for Vasylkivskyi district (CV = 9.9%), and the largest is typical for Yurivskyi district (CV = 27.7%). As a result of the principal component analysis of the cereals and leguminous crops yields variability, three principal components were extracted which together explain 81.2% of the overall yield variability. Principal component 1 explains 69.4% of the total variability. It indicates the total synchronous yields variation within the area investigated as all examined variables have high loading values on principal component 1. The administrative districts that form a belt located in the direction from the north east to the south west of the region have the most coordinated variance, which is reflected by principal component 1. Principal component 2 explains 6.8% of the yield variability. This principal component is sensitive to opposite yield dynamics of central and south-western districts on the one hand and the eastern and northern districts – on the other. Principal component 3 explains 4.9% of the yield variability. This principal component reveals the opposite dynamics of productivity of the central districts on the one hand and the northern and south-eastern districts on the other. The cluster analysis of administrative districts was conducted based on the dynamics of the yield of grain and leguminous as a result of which four clusters were identified. The clusters are geographically defined administrative districts, together forming spatially connected areas. The similar temporal yield dynamics of grain and leguminous crops as a result of interaction between endogenous and exogenous ecological factors is the main principle for revealling such ecologically homogeneous territories. Spatial distribution of principal components indicates a continual pattern, but their overlapping allows one to extract spatially discrete units, which we identified as agroecological zones. Each zone is characterized by a certain character and dynamics of production capacity and has an invariant pattern of response to varying climatic, environmental, and agroeconomic factors

    Agroecological and agroeconomic aspects of the grain and grain legumes (pulses) yield dynamic within the Dnipropetrovsk region (period 1966–2016)

    Get PDF
    This paper reveals the spatial and temporal patterns of grain and leguminous crops yield dynamics in Dnipropetrovsk region and evaluates the role of agro-environmental and agro-economic factors in their formation. Crop data were obtained from the State Statistics Service of Ukraine. The data of the grain and grain legumes (pulses) yield during 1966–2016 on average per year in the administrative districts of Dnipropetrovsk region was analysed. The obtained data indicate that average yields of cereals and leguminous crops within Dnipropetrovsk region varies from 24.3 to 33.4 CWT/ha. The smallest interannual variability in yield is typical for Vasylkivskyi district (CV = 9.9%), and the largest is typical for Yurivskyi district (CV = 27.7%). As a result of the principal component analysis of the cereals and leguminous crops yields variability, three principal components were extracted which together explain 81.2% of the overall yield variability. Principal component 1 explains 69.4% of the total variability. It indicates the total synchronous yields variation within the area investigated as all examined variables have high loading values on principal component 1. The administrative districts that form a belt located in the direction from the north east to the south west of the region have the most coordinated variance, which is reflected by principal component 1. Principal component 2 explains 6.8% of the yield variability. This principal component is sensitive to opposite yield dynamics of central and south-western districts on the one hand and the eastern and northern districts – on the other. Principal component 3 explains 4.9% of the yield variability. This principal component reveals the opposite dynamics of productivity of the central districts on the one hand and the northern and south-eastern districts on the other. The cluster analysis of administrative districts was conducted based on the dynamics of the yield of grain and leguminous as a result of which four clusters were identified. The clusters are geographically defined administrative districts, together forming spatially connected areas. The similar temporal yield dynamics of grain and leguminous crops as a result of interaction between endogenous and exogenous ecological factors is the main principle for revealling such ecologically homogeneous territories. Spatial distribution of principal components indicates a continual pattern, but their overlapping allows one to extract spatially discrete units, which we identified as agroecological zones. Each zone is characterized by a certain character and dynamics of production capacity and has an invariant pattern of response to varying climatic, environmental, and agroeconomic factors. Keywords: agroecological factors; yield; grain; leguminous crops; spatial and temporal variability; principal components analysi

    ЗАБЕЗПЕЧЕННЯ ФІНАНСОВО-ЕКОНОМІЧНОЇ БЕЗПЕКИ ПІДПРИЄМСТВА НА ОСНОВІ ВПРОВАДЖЕННЯ ІННОВАЦІЙНИХ РІШЕНЬ

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    In this article the essence of the notion of financial and economic security is explored. The main approaches to understanding economic and financial security are summarized. The main components of the economic security of the enterprise are considered. The essence of financial and economic security of the enterprise in the context of investment-innovation activity is disclosed. The main factors affecting the financial and economic security of the enterprise are considered. The mechanism of management of financial and economic security of the enterprise with the account of features of innovations is given. The types of innovative solutions and their influence on financial and economic security are determined. A set of measures aimed at stimulating the introduction of innovations into the economic activity of the enterprise is proposed. The main directions of ensuring the financial and economic security of the enterprise are proposed, taking into account the influence of the features of innovations. В данной статье исследована сущность понятия финансово-экономической безопасности. Раскрыты основные подходы к пониманию экономической и финансовой безопасности. Определены виды инновационных решений и их влияние на финансово-экономическую безопасность. Предложены основные направления обеспечения финансово-экономической безопасности предприятия с учетом влияния особенностей инноваций.У даній статті досліджено сутність поняття фінансово-економічної безпеки. Узагальнено основні підходи до розуміння економічної та фінансової безпеки. Визначено види інноваційних рішень та їх вплив на фінансово-економічну безпеку. Запропоновано основні напрями забезпечення фінансово-економічної безпеки підприємства із урахуванням впливу особливостей інновацій

    Temperature effect on the temporal dynamic of terrestrial invertebrates in technosols formed after reclamation at a post-mining site in Ukrainian steppe drylands

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    The research was carried out at the Research Centre of the Dnipro State Agrarian and Economic University in Pokrov city. Sampling was carried out in 2013–2015 on a variant of artificial soil (technosols) formed on loess-like loam, red-brown clay, green-grey clay, technological mixture of rocks, and also formed on loess-like loam with a humus-rich 70 cm top soil layer. To investigate the spatiotemporal variation in the abundance, species richness and species composition of invertebrate assemblages within the experimental polygon, the animals were sampled using pitfall traps. In total, 60 pitfall traps were operated simultaneously during each sampling period. Each year the pitfalls were emptied 26 times every 7–9 days. Invertebrates (Arthropoda and Mollusca) of 6 classes, 13 orders, 50 families and 202 species or parataxonomic units were recorded. Diplopoda was most abundant taxonomic group, though it was represented by only one species Rossiulus kessleri (Lohmander, 1927). Coleoptera and Araneae were the most numerous taxonomic groups. Readily available water for plants, precipitation, wind speed, atmospheric temperature (daily minimum, daily maximum, daily mean), atmospheric humidity and atmospheric pressure were used as environmental predictors. Two dimension geographic coordinates of the sampling locations were used to generate a set of orthogonal eigenvector-based spatial variables. Time series of sampling dates were used to generate a set of orthogonal eigenvector-based temporal variables. The moisture content in the technosols was revealed to be the most important factor determining the temporal dynamics of the terrestrial invertebrate community in conditions of semi-arid climate and the ecosystem which formed as a result of the reclamation process. Following soil moisture, the factor most strongly affecting invertebrates in the technosols was temperature. From the total set of the invertebrates, two relatively homogeneous species groups in terms of thermal preferences were extracted: the microtemperature and mesotemperature groups. The microtemperature species are more tolerant to the thermal factor, and the mesotemperature species are more sensitive. The Huisman-Olff-Fresco approach expanded by Jansen-Oksanen provides a wide set of ecologically relevant models which are able to explain species response. The species response to temperature is affected by a complex of other environmental, temporal and spatial factors. The effect of other factors on the species response must be previously extracted to find real estimations of the species temperature optima and tolerance. The approaches to solving this problem may be the object of future investigation

    Antioxidant status of piglets under nitrate-nitrite load and the action of corrective factors

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    The article presents the results of research on the state of the antioxidant defense system of piglets under nitrate-nitrite toxicosis and the action of corrective factors (methionine, phenarone and methyphene). Nitrate-nitrite load in piglets caused inhibition of the activity of enzymes of the antioxidant defense system, that indicates a decrease in the activity of superoxide dismutase, catalase and glutathione peroxidase in the serum of testing animals. The lowest activity of antioxidant enzymes under chronic nitrate-nitrite toxicosis was on the 60th day of the experiment in the serum of piglets of the control group, where accordingly the activity of superoxide dismutase decreased by 14 %, catalase activity – by 18 %, glutathione peroxidase activity – by 12 %. Lipid peroxidation processes are activated in the blood of animals, namely the level of lipid hydroperoxides and diene conjugates increases under the conditions of experimental nitrate-nitrite load. It should be noted that the highest level of lipid peroxidation products in the serum of piglets with chronic nitrate-nitrite toxicosis was on the 60 th day of the testing, and accordingly the content of lipid hydroperoxides increased by 67 % and diene conjugates – by 33 %. Administration of methionine, phenarone and methyphene under nitrate load contributed to the activation of the antioxidant defense system compared to animals in the control group. The use of antioxidant drugs in sick piglets also contributed to the inhibition of lipid peroxidation, as indicated by a decrease in the content of lipid hydroperoxides and diene conjugates in the serum of experimental group. More pronounced antioxidant effect was shown by administrating methyphene. The mechanism of action of phenarone and methyphene is associated with the direct effect of its components on the inhibition of the absorption of metabolites that have a toxic effect on cell membranes of animals. As a result of the adsorbing action of zeolite, which is part of the drugs, in the digestive tract there is a decrease in the concentration of substances that can be substrates for lipid peroxidation, as well as removal of toxic metabolites in the blood, which are prooxidants. This process occurs by osmosis and diffusion of these substances through the capillaries of the microvilli of the small intestine and their subsequent fixation on the sorbent granules

    Facilitating Access to Justice in the Area of Economic Competition Protection

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    The relevance of the study is determined by the fact that all types of competitive relations should be affected in the formation of business development programs and be based on the adoption of appropriate decisions by all parties of economic relations. The novelty of the study is determined by the fact that each of the participants in economic relations in some cases cannot receive concomitant protection, which is based on equal access to the functions and organs of justice, which are provided by public authorities as carriers of justice. The practical significance of the study is determined by ensuring fair competition to form the prerequisites for the development of the social environment

    Above-ground phytomass dynamics in autogenic succession of an ecosystem

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    It was found that a regular growth in the above-ground phytomass occurs during autogenic succession, which is approximated by logarithmic dependence with high reliability indices. External, including anthropogenic, effects on the process of succession lead to a decrease in the rate of phytomass growth. Besides, the rate of phytomass changes is influenced by endo-ecogenesis caused by various plant species, entering the ecosystem at certain stages of succession. The above-ground phytomass portioning behaviour makes it possible to use it to create a unified indicator of dynamics. Each plant species can be only within certain indicators of the phytomass of their plant communities. At the same time, there is a normal distribution of the projective cover value. This allows us to work out synphytoindication methods for determining the dynamics indicato

    The role of occupational safety management at enterprises and the factors contributing to its unsatisfactory condition

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    The relevance of the researched problem lies in the fact that today industrial injuries and accidents at workplace are a fairly common problem. Since lives and health of employees, as well as production process efficiency, depend on ensuring workplace safety, occupational safety management becomes an important and integral component of industrial health and safety. The management of enterprises should be guided by the principle of life and health of employees being the most important value. There are certain methods of occupational safety management, such as economic, organisational, administrative-legal and social-psychological, which enable to create safe conditions at workplace. With their help, safe working conditions can be significantly improved and therefore efficiency of production process can be increased. In this regard, this article is aimed at defining the concept of occupational safety as an essential element of industrial health and safety. It also taps into the main components that make up an integrated occupational safety system and methods of occupational safety management, which must be taken into account by the management of an enterprise, institution, organisation and the government, the latter also controlling implementation of legislative regulations at workplace, as the economic situation in the country depends to a large extent on the level of production processes functionality. In addition, analysis of existing international standards in the labour protection field has been carried out, their features and scope of application have been considered. On the basis of the revealed data, specific recommendations have been developed, namely, advancement of prosocial behavior, technical upgrade, conduct of briefings and trainings aimed at increasing occupational safety. The research was carried out on the basis of general scientific and special methods of cognition, such as analogy, factor analysis, comparison, structural analysis, expert assessments and opinions, analysis of the causes of industrial injuries and various industrial diseases. The authors investigated the evolution of management and administration in labor protection and industrial safety, their interconnection and interdependence. The result of this scientific work is an understanding of the importance of compliance with safety rules at workplaces, of negative consequences that may arise from non-compliance with legislative regulations and international standards developed by the international community regarding occupational safety. A variety of management methods that can be used during set up of production process, as well as development of recommendations that will help to improve the current situation in labour safety, ensuring protection of labour rights, freedoms and legitimate interests of employees, enacted in most countries by Constitution, have been discussed. Having analysed the fact that currently the state of guaranteeing safe working conditions for employees is in a critical situation, industrial injuries and accidents at enterprises have become widespread. We can come to a conclusion that it is necessary to legislate this situation, to strengthen the legal responsibility of management and employees for non-compliance with safety rules during production proces
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