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Now showing items 21-29 of 29
The nature of structural changes in nanocrystalline ZnO powders under linear heating conditions
(Elsevier Sci Ltd, Oxford, 2004)
The nature of exothermal and irreversible structural changes observed during linear heating of nanocrystalline ZnO powders was investigated using differential scanning calorimetry, X ray, SEM and TEM analysis. Nanocrystalline ...
MULTIPLE FORMS OF SUPEROXIDE DISMUTASE IN APOPLAST AND WHOLE-NEEDLE EXTRACT OF OMORIKA (Picea omorika (PANC.) purkinye)
(Yugoslav Biophysical Society, 2004)
Activity and isoenzyme composition or superoxide dismutase (EC 1.15.1.1) in apoplast and whole-needle extract of P. omorika was studied. Total SOD activity of the soluble fraction of the needle extract exceeded markedly ...
The influence of mechanical activation on the stoichiometry and defect structure of a sintered ZnO-Cr2O3 system
(Trans Tech Publications Ltd, 2004)
Mixtures of starting ZnO and Cr2O3 powders in equimolar quantities were mechanically activated by grinding using a high energy vibro-mill for 0, 40 and 80 minutes. Qualitative X-ray diffraction analysis made after sintering ...
Ornithological diagnosis of Ovčarsko-Kablarska Gorge
(Univerzitet Crne Gore-Odsjek za BiologijuRepublički institut za Zaštitu PrirodePrirodnjački muzej Crne GoreUniverzitet Crne Gore-Institut za Biologiju mora, 2004)
Između planinskih masiva Ovčara i Kablara u zapadnoj Srbiji nalazi se klisura, nastala erozivnim radom Zapadne Morave. I pored antropogenih degradacionih procesa, Ovčarsko–Kablarska klisura se i dalje odlikuje velikom ...
Валоризација природне естетске вредности комплекса Гоч-Гвоздац за одмор и рекреацију
(Београд : Министарство шумарства ФНРЈ, 2004)
Ukoliko je društvo odnosno zemlja razvijenija utoliko i funkcije šume
imaju veću društvenu vrednost. Već danas, u razvijenim zemljama je prevazidjeno
shvatanje prema kome je šuma vredna samo sa gledišta proizvodnje drvne ...
Концентрација олова код неких лијана и зељастих биљних врста дуж саобраћајнице М-21 кроз национални парк 'Фрушка гора'
(Нови Сад : Природно-математички факултет, 2004)
Ornithologycal importance of Gruža accumulation
(Matica srpska, 2004)
The damming of the middle course of the Gruža River, done in order to supply drinking and technical water for the Kragujevac District, resulted in the forming of the Gruža reservoir. This lake fills the depression of the ...
Istorija primene antibiotika
(Srpsko hemijsko društvo, 2004)
Antibiotici su hemijska organska jedinjenja (uglavnom mikrobiološkog porekla) ili njihovi derivati, koji imaju sposobnost da spreče rast ili unište druge mikroorganizme [1]. To je grupa jedinjenja vrlo različitih struktura ...
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 ...