Search
Now showing items 21-30 of 1230
Solvent and Structural Effects on the UV-Vis Absorption Spectra of Some 4,6-Disubstituted-3-Cyano-2-Pyridones
(Springer/Plenum Publishers, New York, 2012)
A series of 4,6-disubstituted-3-cyano-2-pyridones was synthesized and their UV-Vis absorption spectra were recorded in the region 200-600 nm in the set of selected solvents. The effects of solvent dipolarity/polarizability ...
Zinc Polypyrrole-air Sea Water Battery
(Electrochemical Science Group, Beograd, 2016)
An environmentally friendly cell using polypyrrole-air regenerative cathode and zinc as anode, is investigated in the 3.5% sodium chloride solution for the possible applications as the sea water cell. It is shown that cell ...
Linear Free-Energy Relationships Applied to the C-13 NMR Chemical Shifts in 4-Substituted N-[1-(Pyridine-3-and-4-yl)ethylidene]anilines
(Wiley-Blackwell, Hoboken, 2014)
Two series of 4-substituted N-[1-(pyridine-3- and -4-yl)ethylidene]anilines have been synthesized using different methods of conventional and microwave-assisted synthesis, and linear free-energy relationships have been ...
Electrochemical characterization and determination of carbamazepine as pharmaceutical standard and tablet content on gold electrode / Elektrohemijsko karakterisanje i određivanje karbamazepina kao farmaceutskog standarda i sadržaja tablete na elektrodi od zlata
(Association of Chemical Engineers of Serbia, 2014)
The anodic behaviour of carbamazepine (CBZ), an anticonvulsant drug, has been studied on gold electrode in 0.1 mol dm-3 phosphate buffer of pH 7.0 by using cyclic voltammetry. It has been found that the value of the oxidative ...
Energy integration of nitric acid production using Pinch methodology / Energetska integracija proizvodnje azotne kiseline primenom Pinch metodologije
(Association of Chemical Engineers of Serbia, 2015)
Pinch methodology was applied to the heat exchangers network (HEN) synthesis of nitric acid production. The integration is analyzed in two ways, and the results are presented as two different solutions: i) the first solution ...
Economizer water-wall damages initiated by feedwater impurities
(Savez hemijskih inženjera, Beograd, 2014)
The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of ...
Mechanochemical synthesis of CaO·ZnO.K2CO3 catalyst: Characterization and activity for methanolysis of sunflower oil / Mehanohemijska sinteza CaO·ZnO.K2CO3, katalizatora - karakterizacija i aktivnost u metanolizi suncokretovog ulja
(Association of the Chemical Engineers of Serbia, 2015)
The goal of this study was to prepare a CaO·ZnO catalyst containing a small amount of K2CO3 and analyze its activity for biodiesel synthesis. The catalyst was prepared using the following procedure: CaO and ZnO (mole ratio ...
Influence of clay organic modifier on the morphology and performance of poly(epsilon-caprolactone)/clay nanocomposites
(Srpsko hemijsko društvo, Beograd, 2015)
Two series of poly(epsilon-caprolactone) poly(oxepan-2-one) nanocomposites with different organo-modified clays (1 to 8 wt. %) were prepared by the solution casting method. Organoclays with polar (Cloisite (R) C30B) and ...
Physical simulation of finish rolling of microalloyed steels in isothermal conditions / Simulacija završnog valjanja mikrolegiranog čelika u izotermalnim uslovima
(Association of the Chemical Engineers of Serbia, 2022)
The aim of this work was to establish a temperature of finish rolling stage of Nb/Ti microalloyed steel containing 0.06 wt.% C, 0.77 wt.% Mn, 0.039 wt.% Nb and 0.015 wt.% Ti, using physical simulation. Samples were subjected ...
Growth, characterization and optical quality of calcium fluoride single crystals grown by the Bridgman method
(Natl Inst Optoelectronics, Bucharest-Magurele, 2016)
Calcium fluoride - CaF2 single crystals were grown using the Bridgman technique. By optimizing growth conditions, lt 111 gt -oriented CaF2, crystals up to 20 mm in diameter were grown. Number of dislocations in CaF2 ...