Тези доповідей, матеріали конференцій
Постійне посилання на розділhttps://dspace.nuft.edu.ua/handle/123456789/7373
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6 результатів
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Документ Perspective method of cleaning water from toxic substances(2017) Pashchenko, Bohdan; Litvinenko, Aleksandr; Shtefan, YevgeniiThe authors propose a promising method of wastewater treatment from toxic pollutants. It involves the combined decontamination from ions of heavy and non-ferrous metals in conditions of hydrodynamic cavitation. The expediency of this method is substantiated and their results are given in comparison with typical cleaning technologies.Документ Analysis of the structural and mechanical parameters of the ceramic membranes in the technological process of manufacturing(2016) Pashchenko, Bohdan; Shtern, Michael; Shtefan, Yevgenii; Mikhailov, OlehThe results of complex numerical experiments of this work showed: the distributions of internal porosity of the particles and the amount of accumulated plastic deformation of the base particles on the product volume of the material aren’t uniform; the greatest deformation of the material occurs in the products is in obtuse angles, the lowest — in sharp corners. The patterns of influence of the external forces are similar to known results concerning seals mono dispersed environments.Документ The adequacy of mathematical modeling in powder products manufacturing processes(2019) Shtefan, Yevgenii; Mikhailov, Anatoliy; Litvinenko, Aleksandr; Kadomsky, Sergiy; Pashchenko, BohdanThe materials present a system of equations that can be used to create a mathematical model of deformation processes that allows taking into account the structural, mechanical, and rheological parameters of the solid phase of the material.Документ Cavitation liquid extraction of organic substances(2019) Litvinenko, Aleksandr; Kadomsky, Sergiy; Boyko, Yurii; Pashchenko, Bohdan; Shtefan, YevgeniiThe article shows that it is possible to effectively cavitate various production media. For example, a significant effect was found in the extraction of protein from defatted ground bones. The extraction process according to a similar scheme at 18-20°C allowed for an additional 4-6% of protein to be extracted by weight. The results of extraction of biologically active substances from vegetable raw materials were also obtained.Документ Some kind of dead-end ultrafiltration modules for food industries(2015) Pashchenko, Bohdan; Shtefan, YevgeniiПоказано, що мембранні процеси дедалі ширше застосовуються в харчовій промисловості як засіб розділення або концентрування хімічних чи біологічних речовин. Серед різних типів сепараторів модулі з порожнистих волокон широко використовуються для таких різних застосувань, як молочна сироватка, штучні нирки, очищення води тощо. Завдяки своїй трубчастій геометрії порожнисті волокна можна використовувати для потоку зсередини назовні або ззовні всередину. Впровадження цих технологій у харчову промисловість України є важливим кроком на шляху до економічної незалежності та заможного життя.Документ Fatigue damage of turbine shafts of sugar plants at asynchronous connections of turbogenerator to the power network(2013) Kuyevda, Valery; Bovsunovskyy, Anatoly; Kuievda, Yulia; Shtefan, YevgeniiThe increase of durability of power equipment of sugar plants is the actual problem. One of the important component part of this problem is the torsional vibration of turbine shafts caused by the action of the reactive electromagnet moments which arise at asynchronous connections of turbogenerator to the power network. In some cases the torsional vibration of turbine shafts leads to theirs essential fatigue damage. The calculations of fatigue damage of most strained parts of the turbine shaft at forced torsional vibration were executed with the ANSYS software (modal analysis).