Перегляд Автор "Sipakov, Rostislav"

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Assessment and forecast for the creation of photochemical smog over transport overpasses in Kyiv
(ІТГІП, 2018) Sipakov, Rostislav; Trofimovich, Volodimir; Voloshkina, Olena; Bereznitska, Julia
This article deals with the analysis of existing models of smog situation formation over automobile overpasses and in places of substantial congestion of transport in large cities, for example, in Kyiv. A mathematical model consisting of two blocks – dynamic and kinetic, which allows determining the formation of the thermal dome of pollution and the concentration of hydrocarbon emissions in the air, depending on the number of working engines, is proposed. The kinetic block of the model allows determining the level of formaldehyde, as an indicator of the appearance of photochemical smog in conditions of atmospheric constancy. The concentration of emissions from motor vehicles in the air is calculated over the main transport overpasses of the city of Kyiv at their full load (peak hours).
The estimation and reduction of risks caused by air pollution in cities
(Wydział Budownictwa Politechniki Częstohowskiej, 2019) Voloshkina, Olena; Tkachenko, Tetiana; Sipakov, Rostislav; Tkachenko, Olexii
The increase in summer temperatures is intensifying and causing the rise of air pollution by photochemical transformation. The main source of pollution in cities are vehicles. Calcula- tions of a convective jet from the warm surface of intersections and overpasses have been performed and the secondary formaldehyde contamination by photochemical transformations was estimated. It was shown that the non-carcinogenic risk is significantly increased with the concentration. At temperatures above 30°C. the non-carcinogenic risk is more than 10 (significant) and requires in-depth smdies of the harmful influences. Carcinogenic risk ranges from the median to acceptable and requires dynamic control and in-depth studies. Reducing the risk is possible by "green" design: "green" roofs, vertical greening, facade blocks, etc. Using phytoncide plants destroys the pathogenic microflora and improves the microclimate of the premises. Proposed is an assortment of plants suitable for medical and educational buildings within a continental climate area.