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Приказ резултата 11-20 од 21
Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x= 0.05, 0.10 y 0.30)
(Madrid : Sociedad Espanola de Ceramica y Vidrio, 2012)
Mediante el método de Spray Pirólisis (SP) operando a 700ºC y en atmósfera de aire seco, se obtuvieron partículas nanoestructuradas de composición Gd2-xEuxO3 (χ= 0.05, 0.10 y 0.30) partiendo de las respectivas disoluciones ...
On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions
(Belgrade : Serbian Chemical Society, 2012)
MoO3 particles were co-deposited with Ni onto smooth or rough Ni supports from modified Watt’s baths of different compositions. Morphology and composition of the electrodeposits were characterized by means of cyclic ...
Partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems
(Belgrade : Faculty of Technology, Novi Sad, 2012)
This study is concerned with the partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems. In the system of 10% (w/w) polyethylene glycol 1500/5% (w/w) dextran 500,000/80% (w/w) crude ...
Metal rings and discs Matlab/Simulink 3D model for ultrasonic sandwich transducer design
(Belgrade : International Institute for the Science of Sintering, 2012)
Metal-endings are integral part of different ultrasonic sandwich transducers. In this paper a new Matlab/Simulink 3D model of of the finite metal rings and discs of various dimensions is realized. With this model, which ...
Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline pt electrode in sodium chloride solution
(Belgrade : Association of the Chemical Engineers of Serbia, 2012)
The oxygen reduction reaction (ORR) was studied on the polycrystalline Pt electrode in 0.1 M NaCl electrolyte containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by the ...
Phase composition of Bi2O3 specimens doped with Ti, Zr and Hf
(Belgrade : Serbian Chemical Society, 2012)
Powder mixtures of α-Bi2O3 containing 2, 5 and 10 mole % of TiO2, ZrO2 or HfO2 were homogenized, heated at 820ºC for 24 h and quenched in air. X-ray powder diffraction technique was used to characterize the prepared samples. ...
Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties
(Belgrade : International Institute for the Science of Sintering, 2012)
Doped BaTiO 3-ceramics is very interesting for their application as PTCR resistors, multilayer ceramic capacitors, thermal sensors etc. Ho doped BaTiO 3 ceramics, with different Ho 2O 3 content, ranging from 0.01 to 1.0 ...
Synthesis and sintering of high-temperature composites based on mechanically activated fly ash
(Belgrade : International Institute for the Science of Sintering, 2012)
Amount of fly ash which is and yet to be generated in the coming years highlights the necessity of developing new methods of the recycling where this waste can be reused in significant quantity. A new possibility for fly ...
Synthesis of barium-zinc-titanate ceramics
(Belgrade : International Institute for the Science of Sintering, 2012)
Mixtures of BaCO3, ZnO and TiO2 powders, with molar ratio of 1:2:4, were mechanically activated for 20, 40 and minutes in a planetary ball mill. The resulting powders were compacted into pellets and isothermally sintered ...
Uticaj mehaničke energije na komponente MgO-Al2O3-SiO2-TiO2 sistema
(Beograd : Savez inženjera i tehničara Srbije, 2012)
U ovom radu je ispitivan uticaj mehaničke energije na strukturu i promene u mikrostrukturi sistema MgO-Al2O3-SiO2-TiO2. Utvrđeno je da mehanička energija pospešuje homogenizaciju polaznih komponenti, utiče na veličinu i ...