Перегляд за Автор "Pashechko, Mykhaylo"

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  • Ескіз
    Документ
    Analysis of Linkage Mechanisms with Internal Driving Link
    (Advances in Science and Technology Research Journal, 2020-02-05) Kharzhevskyi, Viacheslav; Pashechko, Mykhaylo; Pasika, Viacheslav; Hembara, Nataliya
    The linkage mechanisms with internal driving link that are used in many different machines are considered in the paper. The mechanism contains hydraulic cylinder that is hinged to the rack, a rocker arm that is pivotally attached to the driving rod and to the rack. The law of motion of a rod in a hydraulic cylinder was synthesized. The positions, angular velocities and accelerations of the hydraulic cylinder and the rocker arm are analytically determined by the methods of engineering mechanics and the theory of mechanisms and machines. Thus, brief analytical dependencies are obtained. It is shown that the angular accelerations of the hydraulic cylinder and the rocker arm are qualitatively similar to the relative acceleration of the rod. The results of the work can be used in the motion research of hydraulically driven excavator buckets, other lifting and loading, road building machines, in the actuating mechanisms of industrial robots
  • Ескіз
    Документ
    Specificities of considering migration capability of heavy metals in assessing ecological hazard of polluting soils of urban ecosystems
    (Politechnika Lubelska – Люблинский технологический университет, 2025-02-14) Яковишина, Тетяна Федорівна; Нестер, Анатолій Антонович; Пашечко, Михайло Іванович; Калда, Галина Станіславівна; Соколан, Юлія Сергіївна; Пегдонь, Ізабела; Yakovyshyna, Tetiana; Nester, Anatoliy; Pashechko, Mykhaylo; Kalda, Galyna; Sokolan, Juliia; Piegdoń, Izabela
    Necessity of assessing how badly are soils of urban ecosystems polluted by heavy metals has been motivated by the growth of technogenic load and awareness of the hazard level. The study aimed to identify and justify the use of an indicator to assess the actual environmental risks of soil contamination with heavy metals in urban ecosystems. This indicator eliminates the influence of soil buffering capacity on metal fixation and considers the migration potential under specific conditions of spatial pollution distribution.