Претраживање
Приказ резултата 51-60 од 1230
The influence of fluid-mechanical characteristics of the system on the volumetric mass transfer coefficient and gas dispersion in three-phase system / Uticaj fluido-mehaničkih karakteristika sistema na zapreminski koeficijent prenosa mase i disperziju vazduha u trofaznom sistemu
(Association of Chemical Engineers of Serbia, 2014)
Distribution of gas bubbles and volumetric mass transfer coefficient, kLɑ in a three phase system with different types of solid particles at different operation conditions were studied in this paper. The ranges of superficial ...
Preparation, characterization and antimicrobial activity of chitosan microparticles with thyme essential oil / Izrada, karakterizacija i antimikrobna aktivnost hitozanskih mikročestica sa etarskim uljem timijana
(Association of Chemical Engineers of Serbia, 2014)
Development of an available drug delivery system is of great interest considering the therapeutic effects of formulations with violate essential oils, especially assuming the fact that using essential oils as antimicrobial ...
The application of NIR spectroscopy with chemometric analysis for monitoring a powder blending process
(Srpsko hemijsko društvo, Beograd, 2014)
This paper reports the use of near infrared (NIR) spectroscopy as a process analytical technology (PAT) tool for monitoring the metformin (N,N-dimethylimidodicarbonimidic diamide) hydrochloride and poly(vinyl pyrrolidone) ...
Mass spectrometry analysis of polychlorinated biphenyls: Chemical ionization and selected ion chemical ionization using methane as a reagent gas
(Serbian Chemical Society, 2000)
In the present paper a quadrupole ion trap mass spectrometer, coupled with a gas chromatograph, was used to compare the electron impact ionization (El) and chemical ionization (Cl) technique, in terms of their selectivity ...
Comparative analysis of influence of gamma radiation on programmable memory characteristics
(Taylor & Francis Ltd, Abingdon, 2012)
The aim of this paper is to examine the reliability of erasable programmable read only memory (EPROM) and electrically erasable programmable read only memory (EEPROM) components subjected to the influence of gamma radiation. ...
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 ...
Kinetic modeling of heavy metal sorption by vinyl pyridine based copolymer
(Savez hemijskih inženjera, Beograd, 2012)
Commercial macroporous poly(4-vinylpyridine-co-divinylbenzene) [P4VPD], known as Reillex-425, was characterized by mercury porosimetry, nitrogen physisorption, Fourier transformed infrared (FTIR) spectroscopy and elemental ...
Influence of pin geometry on mechanical and structural properties of butt friction stir welded 2024-T351 aluminum alloy / Uticaj geometrije trna alata na mehaničke i strukturne karakteristike sučeonog spoja aluminijumske legure 2024-T351 zavarenog postupkom FSW
(Association of Chemical Engineers of Serbia, 2015)
The aim of this work was to investigate the combined effect of small difference in pin geometry, together with rotation and welding speed on the weldability, mechanical and structural properties of FSW 2024-T351 Al plates. ...
Synthesis, characterization and crystal structure of Cu(II) complex with a diimine-dioxime ligand, [Cu-2(LH)(2)](ClO4)(2). Influence of the weak Cu center dot center dot center dot O(perchlorate) interaction on the structure of the Cu2N2O2 metallocycle
(Srpsko hemijsko društvo, Beograd, 2014)
The diimine dioxime ligand, 3,3'-(1,4-butanediyl-dinitrilo)bis-2-pentanone, 2,2'-dioxime (LH2), containing a N-4 donor set was prepared by the Schiff base condensation of 2-hydroxyimino-3-pentanone and 1,4-diaminobutane ...
Oscillatory flow chemical reactors / Hemijski reaktori sa oscilirajućim tokom fluida
(Association of Chemical Engineers of Serbia, 2014)
Global market competition, increase in energy and other production costs, demands for high quality products and reduction of waste are forcing pharmaceutical, fine chemicals and biochemical industries, to search for radical ...