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Analysis of isothermal sintering of zinc-titanate doped with MgO
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2007)
The aim of this work was analysis of isothermal sintering of zinc titanate ceramics doped with MgO obtained by mechanical activation. Mixtures of ZnO, TiO2 and MgO (0, 1.25 and 2.5%) were mechanically activated 15 minutes ...
Structure and Properties of Barium Bismuth Titanate Prepared by Mechanochemical Synthesis
(11th European Meeting on Ferroelectricity, Bled, Slovenia, 3-7 September 2007, 2007)
Recently there has been renewed interest in the properties
of the Aurivillius phases as temperature-stable ferropiezoelectrics
[1 ]. Several bismuth-layered crystal structures
and their properties have been investigated ...
The effects of nonstoichiometry on optical properties of oxide nanopowders
(Polish Academy of Sciences, 2007)
In this paper we illustrate the change of optical properties of mechanically activated wurtzite ZnO powder and laser synthesized anatase TiO2 nanopowder due to the nonstoichiometry caused by mechanical activation and/or ...
Analysis of isothermal sintering of zinc-titanate doped with MgO
(Čačak : Technical Faculty, 2007)
The aim of this work was analysis of isothermal sintering of zinc titanate ceramics doped with MgO obtained by mechanical activation. Mixtures of ZnO, Ti02 and MgO (0, 1.25 and 2.5%) were mechanically activated 15 minutes ...
Antioxidative enzymes during germination of two lines of Serbian spruce [picea omorika (panc.) purkyae]
(Srpsko biološko društvo, Beograd, i dr., 2007)
dTwo lines of Picea omorika (Pane.) Purkyne were compared with respect to germination percentage as well as specific activity and isoenzyme pattern of catalase, superoxide dismutase, and peroxidase (POD) during germination. ...
Effect of indole-3-acetic acid on pea root growth, peroxidase profiles and hydroxyl radical formation
(Srpsko biološko društvo, Beograd, i dr., 2007)
Changes in growth, peroxidase profiles, and hydroxyl radical formation were examined in IAA (0.5 - 10 mg/l) treated pea plants grown hydroponically and in isolated roots in liquid in vitro culture. IAA inhibited root ...
EFFECT OF SYNTHESIS METHOD ON BaTiO3 PROPERTIES
(Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia, 2007)
Barium titanate (BaTiO3) has been of practical interest for more than 60 years
because of its attractive properties. BaTiO3 can be prepared using different methods. It
was detected a significant influence of used method ...
EFFECT OF LANTHANUM ON MICROSTRUCTURE OF BaTiO3: PREPARED BY POLYMERIC PRECURSORS METHOD
(3'd Workshop Nanostructured Materials : Processing and Application September 2, 2007 Bled, Slovenia, 2007)
Due to its high dielectric constant and low loss characteristics, barium titanate has
been used in many applications, such as capacitors, piezoelectric devices, positive
temperature coelficient thermistors, semiconductors ...
MICROSTRUCTURE DEVELOPMENT OF Bi4Ti3O12 AND BaBi4Ti4O15 CERAMICS PREPARED BY MECHANOCHEMICAL SYNTHESIS
(COST Action 539 - ELENA 3'd Workshop, Bled, September 2, 2007, 2007)
Scveral bismuth-layered crystal structure and their properties have been investigated-
in detail. However, a lot of aspects of the preparation and properties of barium bismuth
titanate unexplored, whereas being promising ...
Gnežđenje ćubastog gnjurca u Vojvodini
(Zadužbina Andrejević, 2007)
Ćubasti gnjurac (Podiceps cristatus Linnaeus, 1758) je vrsta čiji je čitav životni ciklus vezan za vodu: na vodi i u vodenim staništima živi, hrani se, razmnožava, odmara i skriva. Širokog je rasprostranjenja, jer koristi ...