Browsing by Author "Plyatsuk, Leonid"

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    Environmental biochemical analysis of sulfur compound transformation of natural and technogenic genesis
    (Lviv Politechnic Publishing House, 2018-02-01) Chernysh, Yelizaveta; Plyatsuk, Leonid; Gabbassova, Sabina; Sumy State University
    Ecological and biochemical analysis of transformations of sulfur compounds of natural and technogenic genesis is carried out in the article. Biochemical analysis was based on metabolic models of bacteria Thiobacillus sp., Acidithiobacillus sp. etc. and the study of ecological trophic groups of microorganisms using the KEGG database to establish the regularities of sulfur transformations produced using secondary raw materials. The ways of attracting bacterially transformed sulfur by plant systems as an environmentally safe direction for improving S-nutrition in the ecosystem were determined.
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    Mathematical modeling of the environmental radioactive pollution during oil and gas wells drilling
    (Lviv Politechnic Publishing House, 2017-09-08) Burla, Oksana; Ablieieva, Iryna; Plyatsuk, Leonid; Malovanyy, Myroslav; Sumy State University
    The aim of paper was development of an adequate mathematical model for predicting the level of environmental pollution by radionuclides emitted as a result of oil wells drilling. This problem was solved using Gaussian Plume Model which allowed to determine the concentration of radionuclides at a given point in space. Impurity flux density in Bq/(m2 s) was been simulated.
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    Modeling of operational control of the oxygen regime of the aquatic ecosystem in the conditions of the Dnieper basin
    (Видавництво Львівської політехніки, 2020-02-10) Ponomarenko, Roman; Plyatsuk, Leonid; Tretyakov, Oleg; Ablieieva, Irina; National University of Civil Defence of Ukraine; Sumy State University; Kharkiv State Academy of Physical Education
    The article investigates the adequacy of the mathematical model of oxygen regime prediction in the Dnieper basin, based on the classic Streiter-Phelps model. Retrospective analysis of the Dnieper oxygen parameters with further verification of the Streeter- Phelps model adequacy for the Dnieper basin conditions was used. The mathematical model of the dynamics of the integral indices of the ecological state of the reservoir (the Streeter-Phelps model) has been improved by supplementing the corrective coefficients, which allows predicting with sufficient accuracy the change of the Dnieper ecological state.
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    System approach to the assessment of anthropogenic impact on marine ecosystems during oil production activities
    (Lviv Politechnic Publishing House, 2018-10-26) Plyatsuk, Leonid; Ablieieva, Iryna; Gabbasova, Sabina; Mamutova, Alua; Sumy State University; Al-Farabi Kazakh National University
    The system of quality categories, integrated and single indicators was created for the marine ecosystem under the impact of oil production. On the basis of the integral differential approach, a significant and moderate degree of influence has been substantiated for the stages of drilling the well and extracting oil, as well as an insignificant impact for seismic exploration and decommissioning.