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Thermal diffusivity of sintered 12CaO x 7Al(2)O(3)
(Springer Heidelberg, Heidelberg, 2008)
The thermal diffusivity and free carrier diffusion coefficient of 12CaO x 7 Al2O3 ( C12A7) sintered for different times in air or hydrogen followed by treatment with UV light were determined from photoacoustic phase and ...
Combined FTIR and SEM-EDS study of Bi2O3 doped ZnO-SnO2 ceramics
(Wiley, Hoboken, 2008)
The effects of Bi2O3 addition on the phase composition, microstructure and optical properties of ZnO-SnO2 ceramics were investigated. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 ...
Microstructural characterization of mechanicallyactivated ZnO powders
(Wiley, Hoboken, 2008)
In this paper, changes of microstructural characteristics of disperse systems during mechanical activation of zinc oxide (ZnO) have been investigated. ZnO powder was activated by grinding in a planetary ball mill in a ...
Flavonoids from the aerial parts of Onobrychis montana subsp scardica
(Srpsko hemijsko društvo, Beograd, 2008)
Rutin (1, main constituent) and two flavone C-glycosides, vitexin (2) and vitexin 2 ''-O-alpha-rhamnopyranoside (3) were isolated from the aerial parts of Onobrychis montana subsp. scardica. They were identified by H-1-NMR, ...
Levels of plant cell wall structural organization revealed by atomic force microscopy
(Wiley, Hoboken, 2008)
We used an atomic force microscope to image cell wall isolated from needles of Serbian spruce tree and that synthesized from cell wall components. We also observed the structure of lignin model polymer (DHP), as a best ...
Influence of substrate orientation on the morphologyand orientation of LaNiO3 thin films
(Wiley, Hoboken, 2008)
LaNiO3 thin films were successfully prepared by a chemical method from citrate precursors. The LNO precursor solution was spin-coated onto Si (100) and Si (111) substrates. To obtain epitaxial or highly oriented films, the ...
Structure and Properties of Barium Bismuth Titanate Prepared by Mechanochemical Synthesis
(Taylor & Francis Ltd, Abingdon, 2008)
Bi4Ti4O15 [BBT], a member of Aurivillius bismuth-based layer-structure perovskites, was prepared from stoichiometric amounts of BaTiO3 [BT] and Bi4Ti3O12 [BIT] obtained via mechanochemical synthesis. Mechanochemical synthesis ...
Temperature dependence of the kinetics of oxygen reduction on carbon-supported Pt nanoparticles
(Srpsko hemijsko društvo, Beograd, 2008)
The temperature dependence of oxygen reduction reaction (ORR) was studied on highly dispersed Pt nanoparticles supported on a carbon cryogel. The specific surface area of the support was 5 17 m(2) g(-1), the Pt particles ...
The ionic equilibrium in the CuSO4-H2SO4-H2O system and the formation of the honeycomb-like structure during copper electrodeposition
(Srpsko hemijsko društvo, Beograd, 2008)
The ionic equilibrium of the species in the CuSO4-H2SO4-H2O system was employed to systematize the conditions of copper electrodeposition leading to the formation of the honeycomb-like structure. The reason why CuSO4 ...
Land degradation on barren hills: A case study in northeast Vietnam
(Springer, New York, 2008)
The term "barren hills" has been a keyword for land degradation in the uplands of Vietnam for over a decade. Nevertheless, the "barren" land is still not adequately ecologically characterized. In this work, we analyze land ...