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Now showing items 11-20 of 417
Glass-ceramic enamels derived from the Li2O-Na2O-Al2O3-TiO2-SiO2 system / Staklo-keramički emajli izvedeni iz sistema Li2O-Na2O-Al2O3-TiO2-SiO2
(Serbian Chemical Society, Belgrade, 2002)
The results of research on the conditions for obtaining model glass-ceramic enamels, derived from the basic Li2O-Na2O-Al2O3-TiO2-SiO2 system, by varying the initial composition and thermal treatment conditions, are presented ...
Solvent effects on the structure-activity relationship of pharmacological active 3-substituted-5,5-diphenylhydantoins
(Springer/Plenum Publishers, New York, 2007)
Absorption spectra of eight 3-substituted-5,5-diphenylhydantoins have been recorded in fourteen solvents in the range 200-100 nm. The effect of solvent dipolarity/polarizability and solvent/solute hydrogen bonding interactions ...
Exchange between the stagnant and flowing zone in gas-flowing solids-fixed bed contactors / Razmena čestica između pokretne i nepokretne zone u kontaktorima gas-pokretna čvrsta faza-pakovan sloj
(Serbian Chemical Society, Belgrade, 2005)
In countercurrent gas - flowing solids - fixed bed contactors, a fraction of the flowing solids is in motion (dynamic holdup), while the other fraction is resting on the fixed bed elements. In this study it was experimentally ...
Effects of solvent and structure on the reactivity of 6-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents / Uticaj rastvarača i strukture na reaktivnost 6-supstituisanih nikotinskih kiselina sa diazodifenilmetanom u aprotičnim rastvaračima
(Serbian Chemical Society, Belgrade, 2009)
The rate constants for the reactions of diazodiphenylmethane (DDM) with 6-substituted nicotinic acids in aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, together with ...
Corrosion behaviour of epoxy coatings on modified aluminium surfaces
(Bulletin of Electrochemistry, 2002)
The electrochemical and transport properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces (anodized phosphatized and chromatized-phosphatized aluminium) have been ...
The structure of bright zinc coatings / Struktura sjajnih prevlaka cinka
(Serbian Chemical Society, 2000)
The structures of bright zinc coatings obtained from acid sulfate solutions in the presenceof dextrin/salicylaldehyde mixture were examined. It was shown by the STM technique that the surfaces of bright zinc coatings are ...
Identification of adsorption kinetics with dual mechanisms by nonlinear frequency response method
(Wiley-VCH Verlag Gmbh, Weinheim, 2001)
A characteristic example of the inability of the classical linear frequency response (FR) method to identify the correct kinetic mechanism is adsorption of n-hexane on silicalite-1. The linear FR has resulted in bimodal ...
Danube and Sava river sediment monitoring in Belgrade and its surroundings
(Taylor & Francis Inc, Philadelphia, 2008)
Belgrade is the largest city in Serbia located at the confluence of river Sava to the Danube river. The quality of water and sediments of rivers which run through Belgrade is of a significant importance, since water from ...
Examination of rheological properties of fine particles as carriers for controlled drug release
(Taylor & Francis Inc, Philadelphia, 2003)
Development of lipid-based fine particles as potential drug carriers requires detailed investigation of possible effects of these carriers on rheological properties of blood. In this study, we have investigated the influence ...
Study of gold-platinum and platinum-gold surface modification and its influence on hydrogen evolution and oxygen reduction / Površinska modifikacija platine zlatom i zlata platinom i njen uticaj na reakcije izdvajanja vodonika i redukcije kiseonika
(Serbian Chemical Society, Belgrade, 2005)
Surface modification of the electrodes was conducted from sulfuric acid solutions containing the corresponding metal-chloride complexes using cyclic voltammeter. Comparing the charges of the hydrogen underpotential deposition ...