Претраживање
Приказ резултата 341-345 од 345
Microstructural characterization of mechanically activated ZnO-Cr2O3 system
(Elsevier Sci Ltd, Oxford, 2005)
An equimolar mixtures of starting ZnO and Cr2O3 powders were mechanically activated by grinding using a planetary ball mill for various periods of time (40-320min). Formation of nanocrystalline ZnCr2O4 as normal spine] ...
Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method
(Elsevier Science Sa, Lausanne, 2004)
Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum ...
CATALOG OF THE BIRD COLLECTION IN THE BELGRADE NATURAL HISTORY MUSEUM: THE ORDER PODICIPEDIFORMES
(Serbian Biological Society, 2005)
The fund of the Belgrade Natural History Museum’s ornithological collection has especially great scientific, museological, cultural, and historical importance. The order Podicipediformes was recently chosen for inventory ...
Ispitivanje kolonizacije Mergus merganser L. u Srbiji
(Archives of Biological Sciences, 2008)
Changes in activities of antioxidant enzymes during Chenopodium murale seed germination
(Acad Sciences Czech Republic, Inst Experimental Botany, Praha 6, 2008)
The activities and isoenzyme pattern of catalase (CAT), superoxide dismutase (SOD) and peroxidase (POD) have been studied during germination of Chenopodium murale seeds. CAT and SOD activities were similar in dry seeds and ...