Претраживање
Приказ резултата 31-40 од 6569
Leaching of sphalerite from Pb-Zn-Cu-Fe sulphide concentrate by sulphuric acid in the presence of sodium nitrate / Luženje sfalerita iz Pb-Zn-Cu-Fe sulfidnog koncentrata sumpornom kiselinom u prisustvu natrijum-nitrata
(Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Beograd, 2004)
During floatation of polimetalic ores, in addition to selective concentrates there is a collective sulphide concentrate due to the presence of small mineral types and their complex inter-relations. The existing metallurgies ...
Nechanisms of fracture in medium carbon vanadium microalloyed steels
(16th European Conference of Fracture, 2006)
Image analysis technique for evaluating damage evolution and predicting mechanical strength of concrete structures under corrosion conditions
(Advances in Image Analysis Research, 2014)
The degradation of concrete structures, which progresses as time passes, is caused by external factors such as chemical, physical and mechanical interferences. In the case of chemical deterioration, various ions penetrate ...
Possibilities of production of antimony(III) oxide in facilities of smelter 'Zajača' / Mogućnosti proizvodnje antimon-trioksida u topionici 'Zajača'
(Savez inženjera i tehničara Srbije, Beograd, 2004)
This paper presentes reserch of technological possibilites of production of antimony(III) oxide in facilities of smelter "Zajača" near Loznica. Metal antimony was producted in smelter "Zajača" for nearly hunderd years, and ...
The influence of the hydroxylic solvents on the reaction rates of diazodiphenylmethane with cycloalkylcarboxylic and cycloalkenylcarboxylic acids
(Natl Inst Science Communication, New Delhi, 2004)
The rate constants for the reaction of diazodiphenylmethane with cyclohexylcarboxylic, cyclopentylcarboxylic, cyclohex-3-enylcarboxylic and cyclopent-3-enylcarboxylic acids have been determined in ten alcohols at 30degreesC ...
Selection of natural materials for In situ remediation and prevention of environment contamination by lead
(Grafima Loannis Tsarouchidis, Thessaloniki, 2002)
Stability of the solid matrix - contaminant system represents a crucial parameter in selection of the appropriate natural material for in situ remediation of the environment contaminated by toxic heavy metals. We have ...
Tailoring of advanced poly(lactic acid)-based materials: A review
(Journal of Applied Polymer Science, 2022)
Poly(lactic acid) (PLA) stands out as the most promising biodegradable alternative to conventional petrochemical-based polymers for manufacturing of high-performance materials applied in medicine, pharmacy, food, textile, ...
Nonlinear frequency response of a chromatographic column. part I: Application to estimation of adsorption isotherms with inflection points
(Taylor & Francis Inc, Philadelphia, 2005)
A new method to determine adsorption isotherms is suggested. The method is based on analysis of the nonlinear frequency response of a chromatographic column. Due to the fact that higher order frequency response functions ...
The influence of pesticide residues on chemical hazards in processing of raw vegetables and fruit / Uticaj rezidua pesticida na hemijske rizike u procesu prerade sirovog povrća i voća
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2009)
Pesticides are used in primary agricultural production, food industry, transportation and households. The presence of harmful pesticide residues in or on food has caused a great concern among the consumers. The aim of our ...
The influence of hot-dip galvanized steel surface pretreatment on the adhesion of epoxy coating / Uticaj pripreme površine pocinkovanog čelika na adheziju epoksidne prevlake
(Engineering Society for Corrosion, Belgrade, Serbia, 2007)
The influence of hot-dip galvanized steel surface pretreatment on the adhesion of epoxy cataphoretic coating was investigated. Several passive films were formed on hot-dip galvanized steel (phosphate, chromate and oxide). ...