Претраживање
Приказ резултата 11-20 од 24
Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders
(Elsevier Sci Ltd, Oxford, 2004)
PZT thin films of composition Pb(Zr0.52Ti0.48)O-3 were prepared by a novel method from the suspension of nanocrystalline PZT powders. The powders were obtained by mechanochemical synthesis. Films were deposited on silicon ...
Mechanochemical synthesis of gamma-Bi2O3
(Elsevier, Amsterdam, 2004)
A series of gamma-Bi2O3 phases doped with Zn, Si, Pb and Fe was prepared by mechanochemical treatment of corresponding oxide mixtures with a nominal composition 6Bi(2)O(3) (.) MOx (MOx = ZnO, SiO2, PbO) and 12Bi(2)O(3) (.) ...
Strontium titanate films prepared by spray pyrolysis
(Elsevier Sci Ltd, Oxford, 2004)
Strontium titanate thin films were prepared by spray pyrolysis technique. Deposition parameters, such as solution concentration, time and temperature of deposition, and flow rate of carrier gas were optimized to obtain ...
Changes in sterlet (Acipenser ruthenus L.) catch and length frequency distribution in the Serbian part of the Danube River during the twentieth century
(Polish Academy of Sciences, 2004)
Data from a sample of 262 sterlet (Acipenser ruthenus L.) specimens from the Serbian part of the Danube River were compared with data collected between 1948 and 1967. The recent sample was caught between September 2002 and ...
Photoacoustic properties of sintered NiO
(Walter De Gruyter Gmbh, Berlin, 2004)
The thermal diffusivity of NiO pellets was determined by the photoacoustic technique. A NiO powder, with a purity of 99.95 %, was pressed into pellets 10 mm in diameter. The average agglomerate size of the NiO powder was ...
Значај производних и социјалних функција букових шума у Србији
(Београд : Министарство шумарства ФНРЈ, 2004)
Klasifikacije funkcija šuma su mnogobrojne i različite, zavisno od vremena u kome su nastale i od kriterijuma prema kojima su sačinjene. Jedna od najsveobuhvatnijih i za naše i evropske uslove najznačajnijih je FAO ...
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 ...
Nature of structural changes in LSM-YSZ nanocomposite material during thermal treatments
(Elsevier Science Sa, Lausanne, 2004)
Nanocomposite powders in the system (La1-xSx)(a)MnO3-YSZ((1-y)) [LSM-YSZ], as an attractive cathode material for high operating solid oxide fuel cell (SOFC), were obtained through ultrasonic spray pyrolysis (1.7 MHz) method. ...
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 ...