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Приказ резултата 31-40 од 95
Populaciona dinamika, ishrana i ekotoksikologija velikog kormorana Phalacrocorax carbo (Linnaeus, 1758) na Carskoj bari / Population dynamics, diet and ecotoxicology of the GreatCormorant Phalacrocorax carbo (Linnaeus, 1758) in the Carska bara marshland
(Универзитет у Београду, Биолошки факултет, 2013)
kormorana i naseljava sve kontinente izuzev Južne Amerike i Antarktika. Politipska je vrsta u okviru koje se razlikuje pet podvrsta, a Evropu naseljavaju dve: P. carbo carbo – naseljava obalu severnog Atlantika, i P. carbo ...
3 Structural, morphological and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures
(Belgrade : Institute of Technical Sciences of SASA, 2013)
Starting nanopowders of TiO2 (anatase 99.7%) and a-Fe2O3 (hematite) were mixed in the weight ratio 60:40 and 40:60. Green samples were sintered in the temperature range 750-1250oC in air. Structural, morphological and ...
On strain-rate sensitivity and size effect of brittle solids: transition from cooperative phenomena to microcrack nucleation
(Springer Nature, 2013)
An idealized brittle microscale system is subjected to dynamic uniaxial tension in the medium-tohigh
strain-rate range (˙ε ∈ [100 s−1, 1×107 s−1]) to investigate its mechanical response under constrained
spatial and ...
Structural and Electrical Properties of Ti Doped alpha-Fe2O3
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2013)
In this work we have analyzed the effects of Ti doping on structural and electrical properties of alpha-Fe2O3. When the amount of added Ti (5 wt.% TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed ...
Classification and fingerprinting of different berries based on biochemical profiling and antioxidant capacity
(Empresa Brasil Pesq Agropec, Brasilia Df, 2013)
The objective of this work was to evaluate the biochemical composition of six berry types belonging to Fragaria, Rubus, Vaccinium and Ribes genus. Fruit samples were collected in triplicate (50 fruit each) from 18 different ...
SYNTHESIS PROCEDURE AND PROPERTIES OF NiFe2O4 – BaTiO3 COMPOSITES
(Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia, 2013)
NiFe2O4 (NF) powder was prepared by auto combustion method starting from nickel and iron nitrates. After the process of self-ignition, fine precursor powder was thermally treated and forming the nickel ferrite powder. XRD ...
INFLUENCE OF DOPANTS ON BARIUM BISMUTH TITANATE ELECTRICAL PROPERTIES
(Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia, 2013)
The Aurivillius structure has capability to host ions of different size, so a large number of different dopants can be accommodated in the BaBi4Ti4O15 (BBT) lattice. It was detected that various substitutions of Bi3+ and ...
La-doped and La/Mn-co-doped Barium Titanate Ceramics
(Acta Physica Polonica A, 2013)
Barium titanate ceramics doped with 0.3 mol.% lanthanum and co-doped with 0.3 mol.% lanthanum and 0.05 mol.% manganese were investigated. The powders were prepared by a modified polymeric precursor method based on the ...
Structural, morphological and optical study of nanostructured TiO2/Fe2O3 thick film
(Bor : Technical Faculty, 2013)
Thick films of nanostructured TiO2 (60 wt%) and alpha-Fe2O3 (40 wt%) were fabricated by screen printing technology on an alumina substrate. Samples were sintered in the temperature range 750-1350oC in air. Thick film paste ...
In vitro Radioprotective Activity of the Bryozoan Hyalinella punctata
(Asian Journal Of Chemistry, Sahibabad, 2013)
The objective of the present study was in vitro evaluation of radioprotective activity of the freshwater bryozoan Hyalinella punctata on cultured human peripheral blood lymphocytes after irradiation with 2 gy of Co-60 ...