Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Živković Živan D."'
Autor:
Kešelj Dragana M., Lazić Dragica Z., Živković Živan D., Škundrić Branko T., Penavin-Škundrić Jelena V., Sladojević Slavica G.
Publikováno v:
Hemijska Industrija, Vol 70, Iss 4, Pp 399-407 (2016)
The paper presents mathematical models which describe the dependence between water sorption capacity, on one hand, and the degree of crystallinity and the content of Na2O and Al2O3 in NaY zeolite, on the other. NaY was synthesized from sodium alum
Externí odkaz:
https://doaj.org/article/28a5fea04c85408293dbb484ff12c442
Autor:
Mitovski Aleksandra M., Mihajlović Ivan N., Štrbac Nada D., Sokić Miroslav D., Živković Dragana T., Živković Živan D.
Publikováno v:
Hemijska Industrija, Vol 69, Iss 3, Pp 287-296 (2015)
Selective arsenic extraction from enargite based complex concentrate from Copper Mine in Bor (Serbia), using sodium hypochlorite as a leaching agent, was investigated in this paper. The aim was to assess the optimal conditions for the most efficie
Externí odkaz:
https://doaj.org/article/e696c8b7da114386be7aef8898c9b685
Autor:
Mitovski Aleksandra M., Živković Dragana T., Balanović Ljubiša T., Štrbac Nada D., Živković Živan D.
Publikováno v:
Hemijska Industrija, Vol 63, Iss 3, Pp 163-169 (2009)
Life-cycle assessment (LCA) presents a relatively new approach, which allows comprehensive environmental consequences analysis of a product system over its entire life. This analysis is increasingly being used in the industry, as a tool for investiga
Externí odkaz:
https://doaj.org/article/364a6aff284e4b8781b5be34860ee7b8
Publikováno v:
Journal of the Serbian Chemical Society, Vol 70, Iss 1, Pp 9-20 (2005)
The results of the calculation of the thermodynamic properties for liquid Ga-Sb-Tl alloys at the temperature 1073 K are presented in this paper. Initially, the most appropriate thermodynamic model for the investigated system was selected. Based on a
Externí odkaz:
https://doaj.org/article/10022299317f4597b20e4af82922cb0b
Publikováno v:
Journal of the Serbian Chemical Society, Vol 70, Iss 6, Pp 869-877 (2005)
The kinetics of realgar (As2S2) oxidation was studied under isothermal and non-isothermal conditions. The obtained values of the activation energy indicate that the process occurs in the kinetic domainwith the realgar particles being converted to As2
Externí odkaz:
https://doaj.org/article/7edf3703252f42d9a4590f54302ac838
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 40, Iss 1, Pp 57-73 (2004)
In this paper, results of copper - lead matte investigations are presented. Investigated copper-lead matte is intermediate product of lead production in TREPCA-Zvecan. In the first part of the paper characterization of starting material is presented,
Externí odkaz:
https://doaj.org/article/af7b1c207034443a9c70e2eb477ca2c6
Publikováno v:
Journal of the Serbian Chemical Society, Vol 68, Iss 8-9, Pp 665-675 (2003)
The calculations of thermodynamic properties in some gallium-based systems with a miscibility gap – Ga–Tl, Ga–Hg and Ga–Pb are presented in this paper. The determination of the gallium activities in the mentioned liquid alloys was based on th
Externí odkaz:
https://doaj.org/article/a047b17ad6ac4e28880f508763013ef4
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 39, Iss 3-4, Pp 465-474 (2003)
Thermodynamic properties of binary Ga-Pb alloys were investigated experimentally and analytically. Quantitative differential thermal analysis was used for determination of integral mixing enthalpies for the gallium-reach alloys, at the constant tempe
Externí odkaz:
https://doaj.org/article/0cc07cd9d81e4eb494117f72ba0aedfc
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 38, Iss 3-4, Pp 229-236 (2002)
EMF measurement of the electrochemical cell with zirconia as solid electrolyte was performed to determine the gallium activity from 950 to 1150K in the entire composition range of liquid Ga-Pb alloys. In the whole concentration range, activity of Ga
Externí odkaz:
https://doaj.org/article/bcc3e88b28b3439cae50f96dec98ff52
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 38, Iss 3-4, Pp 273-284 (2002)
Calculations of activities in Ga-Cd and Cu-Pb binary systems were done based on their known phase diagrams, using different calculation methods. First, activities of cadmium at 700 K and copper at 1263 K in Ca - Cd and Cu - Pb systems, respectively,
Externí odkaz:
https://doaj.org/article/e7c513497a684a7d9b2b51364f85ad12