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Now showing items 31-40 of 146
The nucleation behavior of k2o center dot tio2 center dot 3geo(2) undercooled melt
(University of Chemistry and Technology, Prague, 2009)
The nucleation of K2TiGe3O9 crystals in an undercooled melt of stoichiometric composition was studied. Volume nucleation with spherical morphology of the growing crystals was determined. The nucleation range is in the ...
Microstructure examination of electromagnetic casting 2024 aluminum alloy ingots
(Carl Hanser Verlag, Munich, 2007)
The results presented in this paper were obtained from microstructure examination of Al alloy 2024 ingots casted with and without low-frequency electromagnetic field. The microstructure characterization shows that it is ...
Fine and ultra fine milling and coating of limestone
(IMPC 2006 - Proceedings of 23rd International Mineral Processing Congress, 2006)
In the present study the results of micronization of limestone coating from the "Vencac"- Arandjelovac deposit are presented. Tests comprised the following: (i) Procedure of micronization-limestone fine and ultra fine ...
Kinetics of chalcopyrite leaching by sodium nitrate in sulphuric acid
(Elsevier Science Bv, Amsterdam, 2009)
Hydrometallurgical processes offer a great potential for treating chalcopyrite ores and concentrates, and it results in increased metal recoveries and reduced air pollution hazards. In recent years interest for application ...
Kinetics of specific surface area change using the Boltzmann model
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2009)
Sinterovanjem sistema 2MgO·2Al2O3·5SiO2, dobija se kordijerit, koji zbog svojih svojstava predstavlja izuzetno atraktivan keramički materijal. U cilju ispitivanja mogućnosti sniženja temperature formiranja kordijerita tokom ...
Remediation of the Serbian soils contaminated by radionuclides in the function of the sustainable development
(Savez hemijskih inženjera, Beograd, 2008)
Phosphate-induced metal stabilization (PIMS) using apatite stabilizes uranium in situ, by chemically binding it into the new low-solubility (Ksp=10-49) phase. Uranium-phosphate-autunite is stable across a wide range of ...
Electrochemical synthesis and characterization of hydroxyapatite powders
(Elsevier Science Sa, Lausanne, 2008)
Electrochemical synthesis of hydroxyapatite powders was performed galvanostatically from homogeneous solution of Na(2)H(2)EDTA center dot 2H(2)O, NaH2PO4 and CaCl2 at a concentration relationship Ca/EDTA/PO43- of 0.25/0.25/0.15 ...
Computational investigations of the binding mechanism of current influenza virus neuraminidase inhibitors: Correlation with experiment
(Nova Science Publishers, Inc., 2009)
In the context of the recent pandemic threat by the worldwide spread of H5N1 avian influenza, novel insights into the mechanisms of ligand binding and interaction between various inhibitors (zanamivir-ZMV, oseltamivir-OTV, ...
Fizičkohemijske i strukturne osobine kiselinski modifikovanog zeolitskog tufa - heu-tip zeolit / Physicochemical and structural characteristics of HEU-type zeolitic tuff treated by hydrochloric acid
(Srpsko hemijsko društvo, Beograd, 2004)
Uzorci prirodnog zeolita (HEU-tipa) iz ležišta Novakovići – klinoptilolit- Ca (u blizini Prijedora, Bosna i Hercegovina), modifikovani su različitim koncentracijama hlorovodonične kiseline (od 10-3 M do 2 M), a u cilju ...
Obtainment of scheelite-sulphide preconcentrate from polymetallic ore from 'Rudnik' mine
(Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd, 2005)
The possibility of preconcentration of scheelit and sulphide minerals from mine "Rudnik" polymetallic ore, using the gravity concentration process was investigated in this paper. Because of wolfram minerals occurrence in ...