Вісники та науково-технічні збірники, журнали

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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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    Glass coatings on the basis of Na2O-B2O3-SiO2 system for tin bronze protection during melting
    (Publishing House of Lviv Polytechnic National University, 2015) Bragina, Lyidmyla; Sobol, Yuliya
    Requirements to properties of protectivetechnological coatings for the tin bronze melting from secondary raw materials were formulated in the work. The choice of model glasses compositions in the initial Na2OB2O3-SiO2 system on the basis of the melting parameters values was made. Non-scarce and inexpensive raw materials for protective coatings were selected. Also the best glass composition was determined based on the complex of chosen properties. The formation mechanism of the selected composition glassy melting by using DTА and XRDА was studied. Сформульовано вимоги до властивостей захисно-технологічних покриттів для виплавлення олов’яних бронз з вторинної сировини. За значеннями плавкісних показників здійснено вибір складів модельних стекол в вихідній системі Na2O-B2O3-SiO2 та підібрано недефіцитні та невартісні сировинні матеріали для захисних покриттів, а також знайдено кращий за комплексом обраних властивостей склад склокомпозиції. За допомогою ДТА та РДА вивчено механізм формування склорозплаву обраної композиції.