Yazar "Lopushniak, Vasyl" seçeneğine göre listele

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    Effect of stimulation with variable magnetic field of wheat seeds for various technological purposes
    (Wydawnictwo Sigma-Not Sp Zoo, 2022) Jakubowski, Tomasz; Syrotyuk, Serhiy; Lopushniak, Vasyl; Atilgan, Atilgan
    The aim of the study was to determine the reaction of wheat (Triticum aestivum L.) seeds for various technological purposes to a variable magnetic field. In the experiment, a stand with the RC OSCILLATOR TYPE G502 system generating sinusoidal and square signals with frequencies in the range of 0-100 Hz was used. The magnitude of the magnetic field induction was used: 10, 40 and 70 mT and the seed exposure time: 10, 600 and 1800 s. A significant influence of the alternating magnetic field on some ontogenetic parameters of plants was demonstrated.
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    Numerical Analysis of Thermal Impact between the Cooling Facility and the Ground
    (Mdpi, 2022) Sokolowski, Pawel; Nawalany, Grzegorz; Jakubowski, Tomasz; Popardowski, Ernest; Lopushniak, Vasyl; Atilgan, Atilgan
    The article presents the results of research on the range of the impact of a cooling facility on the surrounding ground. An analysis of the heat exchange with the ground and through the building partitions was carried out. The analysis was carried out on the basis of the results of actual field tests carried out throughout the measurement year. The object of the research was an agricultural cold store located in southern Poland. The computational analysis of the interaction between the cooling facility and the ground was based on the numerical elementary balances method. The validation of the calculation model was performed based on the adopted boundary conditions. Calculations for the analyzed variants were carried out on the basis of a geometric model of the cooling facility built in the WUFI (R) plus program, corresponding to the actual dimensions. The analysis of the energy balance of the studied facility showed that the share of energy flow through the floor to the ground constitutes 8.2% of all energy flows through other partitions and the ventilation system. In order to maintain the set air temperature inside the studied building, intensive cooling was required with an energy demand of 5184.5 kWh/year. The results of the research showed that the range of the thermal impact of the building changes depending on the location of the studied ground area in terms of cardinal direction. The external and internal microclimate characteristics also affect the extent of the impact of the cooling facility on the surrounding ground. Under the assumption of stable values of circle minus(i) within a range of 0.0-4.0 degrees C, the largest range of influence (4.0 m) occurs in the summer.
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    Result of seeds Lepidium sativum L. exposure to ionizing radiation
    (Wydawnictwo Sigma-Not Sp Zoo, 2022) Ciechanowski, Marek; Bolewski, Andrzej; Dudala, Joanna; Jakubowski, Tomasz; Syrotyuk, Serhiy; Lopushniak, Vasyl; Atilgan, Atilgan
    Ionizing radiation causes ionization and / or excitation of atoms of the material medium with which it interacts. Depending on the mechanism of interaction, we speak of direct and indirect ionizing radiation. The first group includes electrically charged particles (alpha, beta, protons), which ionize mainly by Coulomb interactions. On the other hand, neutral particles (e.g. neutrons) and high-energy electromagnetic radiation (X and. rays) interact with matter indirectly through the photoelectric effect, Compton scattering, electron-positron pair production, and also by nuclear reactions. The paper presents the result of an experiment in which seeds Lepidium sativum L. were exposed to neutron radiation. A commercial Cf-252 neutron source was used in the experiment (source activity on the day of the experiment A = 11 MBq, yield of neutron source W = 1.34E + 6 n/s,) [5-7]. The exposure time ranged from 5 seconds to 11 hours.