Pretraživanje
Prikaz rezultata 31-40 od 73
Challenging analytical task: analysis and monitoring of arsenic species in water
(Gheorghe Asachi Technical University of Iasi, Romania, 2014)
Analysis and monitoring of arsenic is still a challenging analytical task. Due to its complex behaviour (different forms of arsenic that can be present depending on pH and oxidation states of arsenic) as well as demanding ...
Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds / Mikrotalasna tehnika u sintezi 2-piridona i jedinjenja na bazi 2-piridona
(Association of Chemical Engineers of Serbia, 2014)
2-Pyridones are important heterocyclic compounds that are widely used in medical chemistry, and their various derivatives have significant biological and medical applications. In this paper, the synthesis of 2-pyridones ...
Chemical composition and antioxidative activity of essential oil of Thymus serpyllum L. / Hemijski sastav i antioksidativna aktivnost etarskog ulja Thymus serpyllum L.
(Association of Chemical Engineers of Serbia, 2014)
Wild thyme (Thymus serpyllum L.) is a popular remedy regarding both tradetional and conventional medicine. It is used as the antiseptic, aromatic, expectorant, stomachic, antispasmodic, carminative and preservative substance. ...
Optimization of extraction of antioxidant components from yarrow herb / Optimizacija ekstrakcije antioksidantnih komponenata iz herbe hajdučke trave
(Association of Chemical Engineers of Serbia, 2014)
Recently, research efforts have been directed toward medicinal plants and their extracts, as important sources of natural antioxidant. Lots of biologically active compounds are responsible for the antioxidant effects of ...
Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers
(Srpsko hemijsko društvo, Beograd, 2014)
The electrospinning of rhodamine B (RhB)-doped poly(methyl methacrylate) (PMMA) is presented as a promising technique for processing photoluminescent nanofibers. Nanofibers with concentrations of RhB in PMMA between 0.05 ...
Determination of kinetic parameters for complex transesterification reaction by standard optimisation methods / Određivanje kinetičkih parametara složene reakcije transesterifikacije primenom standardnih optimizacionih metoda
(Association of Chemical Engineers of Serbia, 2014)
This paper represents a methodology for kinetic parameter estimation based on standard optimization methods. The parameter estimation procedure is applied to the example of modelling of non-catalytic transesterification ...
Wear resistance and dynamic fracture toughness of hypoeutectic high-chromium white cast iron alloyed with niobium and vanadium
(Institute of Metals and Technology, 2014)
The influence of mass fractions 1.5 % Nb and 1.5 % V, added singly and in combination, on the microstructural characteristics and properties relevant to the service performance of the hypoeutectic high-chromium white iron ...
Fabrication and behaviour of Al-Si/SiC composite in cavitation conditions
(Taylor & Francis Ltd, Abingdon, 2014)
Aluminium matrix composite (AMC) specimens were prepared using the compocasting technique. The reinforcements used were silicon carbide (SiC) particles with an average size of 30 mm. The influence of reinforced ratio of ...
Iron-chromium-carbon-vanadium white cast irons: The microstructure and properties / Železo-hrom-ugljenik-vanadijum bela livena gvozđa - mikrostruktura i svojstva
(Association of Chemical Engineers of Serbia, 2014)
The as-cast microstructure of Fe-Cr-C-V white irons consists of M7C3 and vanadium rich M6C5 carbides in austenitic matrix. Vanadium changed the microstructure parameters of phase present in the structure of these alloys, ...
Optimization of electrochemical decolorization of certain arylazo pyridone dyes
(Srpsko hemijsko društvo, Beograd, 2014)
Electrocatalytic decolorization of arylazo pyridone dyes was investigated in the presence of sodium chloride using a DSA Ti/PtOx electrode in dilute sodium hydroxide. The decolorization could be attributed to the indirect ...