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Prikaz rezultata 11-20 od 209
Svetlost kao konstituent ikonopisa: hemijski, fizički, fiziološki i teološki aspekti / Light as a constituent of icon painting: chemical, physical, physiological and theological aspects
(Univerzitet u Beogradu, Studije pri univerzitetu, 2015)
U doktorskoj disertaciji razmatran je pojam svetlosti i njene povezanosti sa naukom i umetnošću kroz istoriju civilizacije kao i u savremeno doba. Pristup koji obuhvata različite aspekte istraživanja svetlosti nazvan je ...
Structural and Electronic Properties of Pseudobrookite
(Belgrade : Institute for Multidisciplinary Research, University of Belgrade, 2015)
Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser ...
Impact of sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers
(Springer, Dordrecht, 2015)
In this paper, geopolymers based on two different fly ash samples were exposed to sodium sulfate (Na2SO4) solution (50 g/l) over a period of 365 days. It was found that sulfate solution attack caused a small decrease in ...
Donor-acceptor joint effect in barium titanate systems
(Elsevier Sci Ltd, Oxford, 2015)
Modified Pechini process was used to prepare nanopowders of barium titanate (BT) co-doped with different concentrations of niobium and manganese. Influence of dopants on the grain growth inhibition and microstructure ...
Anticancer properties of nanoceria
(International Max Planck Research School for Molecular Biology in Gottingen, 2015)
CeO2 (nanoceria) is the most important rare-earth oxide, which application is rapidly emerging. These nanoparticles are potent free radical scavengers, due to coexistence of Ce3+ and Ce4+ ions and formation of oxygen ...
Tailoring the microstructure of Mn-Zn ferrite to electronic properties
(Belgrade : Institute for Multidisciplinary Research, University of Belgrade, 2015)
Commercial Mn-Zn ferrite powder was milled in a planetary ball mill for 30-240 minutes. Particle size distribution in the milled powders was analyzed using a laser particle size analyzer and correlated with XRD and SEM ...
Cytotoxic effect of nanoceria on colon cancer cells (HT-29)
(Serbian Chemical Society, 2015)
Radiotherapy is commonly used for the treatment of colon cancer. Additionally, various antioxidant agents, such as nanoparticles of cerium oxide (nanoceria, nanoCeO2), are being investigated as the adjunctive therapy. CeO2 ...
Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide
(Elsevier Science Bv, Amsterdam, 2015)
A ceramic target with Ga:In:Sn=4:64:32 metal ratio has been sintered and used for RF sputtering process to develop high quality Ga doped ITO (GITO) transparent conductive oxide layers, particularly for photovoltaic ...
Influence of DC Bias on the Electrical Characteristics of SMD Inductors
(IEEE-Inst Electrical Electronics Engineers Inc, Piscataway, 2015)
As the dc bias flows through a ferrite chip surface mount device (SMD) inductor, it tends to premagnetize the core and reduce its inductance and impedance. It is observed that this drop is especially emphasized when the ...
Uticaj rastvora amonijum-nitrata i natrijum-sulfata na mehanička svojstva i strukturu geopolimera na bazi elektrofilterskog pepela termoelektrana / Effects of ammonium nitrate and sodium sulfate solution on mechanical properties and structure of fly ash based geopolymers
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2015)
Geopolimeri na bazi tri različita uzorka elektrofilterskog pepela izloženi su dejstvu koncentrovanog rastvora NH4NO3 (480 g/dm3) i rastvora Na2SO4 (50 g/dm3) u periodu od 18 meseci. Promene mehaničkih svojstava geopolimera ...