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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 ...
Synthesis and Biological Activities of Thio-avarol Derivatives
(Amer Chemical Soc, Washington, 2008)
Eleven new thio-avarol derivatives (3-13) were synthesized. Their antimicrobial, brine shrimp lethality, and free-radical scavenging activities and acetylcholinesterase inhibition, together with 12 already reported ...
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, ...
Ectomycorrhiza and water transport
(Springer-Verlag Berlin Heidelberg, 2008)
In temperate and boreal regions, seasons are characterized by two major factors - temperature and water availability. As water availability is affecting essential processes like nutrition and photosynthesis, it is of central ...
Morphology investigation of mechanically activated ZnO-SnO2 system
(Elsevier Sci Ltd, Oxford, 2008)
Powder mixtures of zinc oxide and tin oxide in the molar ratio, ZnO:SnO2 = 2: 1, were mechanically activated in a planetary ball mill in the time intervals of 0-160 min. The adsorption-desorption isotherms, specific surface ...
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 ...
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 ...
Antiproliferative effect of synthetic lignin against human breast cancer and normal fetal lung cell lines. Potency of low molecular weight fractions
(Balkan Union of Oncology (B.U.ON.), 2008)
Purpose: Due to a lack of chemotherapeutics to efficiently control neoplastic processes, there is a need for discovering new, more efficient anticancer drugs that would distinguish malignant from normal cells. Materials ...
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 ...