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Приказ резултата 31-40 од 292
Printed antenna with circular polarization and a Tunable elevation angle
(Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd, 2014)
Circularly polarized antenna with a possibility of tuning the elevation angle i.e. obtaining maximum radiation in either broadside or directions declined from the zenith is presented in the paper. The antenna consists of ...
Treatment of waste sulfuric acid copper electrolyte / Tretman otpadnog sumporno-kiselog elektrolita bakra
(Institut za rudarstvo i metalurgiju Bor, 2014)
The aim of this paper was to investigate the possibility of using the copper anodes with high nickel content for electrolytic treatment of waste sulfuric acid copper electrolyte. Nickel content in each anode was about 10 ...
Platinum(II) complexes with R(2)edda ligands (R = Me, Et, n-Pr; edda = ethylenediamine-N,N '-diacetate): Synthesis and characterization
(Oxford : Pergamon-Elsevier Science Ltd, 2014)
Three novel complexes of platinum(II) with R(2)edda bidentate ligands [PtCl2(R(2)edda)] (R = Me, Et, n-Pr; edda = ethylenediamine-N,N'-diacetate; 1-3), are synthesized and characterized by IR and NMR spectroscopy and ...
Synthesis of chromogenic substrate for screening of pullulan-degrading microorganisms
(Belgrade : Society of Physical Chemists of Serbia, 2014)
A chromogenic substrate was obtained by coupling azo dye Congo red to microbial polysaccharide pullulan. The synthesized product was characterized by spectral techniques and elemental analysis. Results showed that dye-labelled ...
Characterization of nanoporous carbon fibrous materials obtained by chemical activation of plane tree seed under ultrasonic irradiation
(Elsevier, 2014)
An ultrasonic irradiation was applied for the impregnation by chemical agents in the chemical activation process of new type of active carbon precursor. Plane tree seed, due to the unique fibrous structure and low cost is ...
RF MEMS and NEMS Components and Adsorption-Desorption Induced Phase Noise
(Institute of Electrical and Electronics Engineers Inc., 2014)
Radio frequency micro- and nanoelectromechanical systems (RF MEMS and RF NEMS) and technologies have a great potential to overcome the constraints of conventional IC technologies in realization of fully integrated transceivers ...
Non-isothermal reduction of silica-supported nickel catalyst precursors in hydrogen atmosphere: a kinetic study and statistical interpretation
(Springer, New York, 2014)
A series of silica-supported nickel catalyst precursors was synthesized with different SiO2/Ni mole ratios (0.20, 0.80 and 1.15). Non-isothermal reduction of Ni catalyst precursors was investigated by temperature-programmed ...
Biomimetic synthesis and properties of cellular SiC
(Elsevier Sci Ltd, Oxford, 2014)
Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl ...
Electrooxidative Behavior of Arylazo Pyridone Dyes and Their Inclusion Complexes on Gold Electrode in 0.1 M NaOH
(Oxford : Pergamon-Elsevier Science Ltd, 2014)
The electrochemical behavior of six arylazo pyridone dyes classified to the substituents present at the phenylazo and 2-pyridone moiety and their 1:1 inclusion complexes with (2-hydroxypropyl)-beta-cyclodextrin was studied ...
Vacuum Sensing Based on the Influence of Gas Pressure on Thermal Time Constant
(Institute of Electrical and Electronics Engineers Inc., 2014)
In this paper we propose a novel operating principle for thermal vacuum sensor. The sensor considered in this work consists of thermopiles and thermally isolating membrane structure. The operating principle of such sensor ...