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Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2012)
The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, ...
The identification of drought tolerant maize accessions by two-step cluster analysis
(Natl Agricultural Research & Development Inst, Fundulea, 2012)
Water deficit is one of the main limiting factors leading to maize yield reduction in the temperate zone. Global environmental changes additionally put breeding for drought tolerance in the focus of research programmes. ...
The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2012)
In this article the influence of mechanical activation on sintering process of barium-strontium-titanate ceramics has been investigated. Both non-activated and mixtures treated in a planetary ball mill for 5, 10, 20, 40, ...
Alien plant species and factors of invasiveness of anthropogenic vegetation in the Northwestern Balkans - a phytosociological approach
(Sciendo, Warsaw, 2012)
We studied the anthropogenic vegetation of the Northwest Balkans in order to determine its susceptibility to invasion by alien plant species. We compiled a dataset of 3089 vegetation plots sampled between 1939 and 2009, ...
Identification of Agrobacterium vitis as a causal agent of grapevine crown gall in Serbia
(Srpsko biološko društvo, Beograd, i dr., 2012)
In 2010, a serious outbreak of crown gall disease was observed on grapevines (Vitis vinifera L. cv. Cabernet Sauvignon) in several commercial vineyards located in the Vojvodina province, Serbia. Bacteria were isolated from ...
Genotype, seed age and pH impacts on germination of alfalfa
(Romanian Biotechnological Letters, 2012)
The aim of this investigation was to estimate the effects of pH levels of germination media (5, 6, 7 and 8) and seed age (9 and 1 years) on germination and early seedling growth in five Serbian alfalfa cultivars (K-22, ...
Influence of Heavy Metals on Seed Germination and Growth of Picea abies L. Karst
(Polish Journal of Environmental Studies, 2012)
This paper presents the influence of heavy metals on the process of seed germination and the survival rate of Picea abies L. Karst spruce seedlings. The experiments were conducted in laboratory conditions by adding solutions ...
Scanning electron microscopic examination of enamel surface after fixed orthodontic treatment: In-vivo study / Ispitivanje površine gleđi posle terapije fiksnim ortodontskim aparatom skening-elektronskom mikroskopijom - studija in vivo
(Srpsko lekarsko društvo, Beograd, 2012)
Introduction. Therapy with fixed orthodontic appliances starts with bracket bonding and ends with debonding of brackets, leaving enamel surface varied. Objective. The aim of this pilot study was to examine enamel surface ...
Influence of mechanical activation on electrical properties of barium-zinc-titanate ceramics sintered at 1100A degrees C
(Springer, New York, 2012)
Starting mixtures of BaCO3, ZnO, and TiO2 powders are mechanically activated in a planetary ball mill for various periods of time. The powders obtained are sintered isothermally at 1100A degrees C for 120 min. Non-isothermal ...
Review of Interactions Between Host Plants, Aphids, Primary Parasitoids and Hyperparasitoids in Vegetable and Cereal Ecosystems in Slovenia
(Gazi Entomological Research Soc, Ankara, 2012)
Sampling of aphids and parasitoids was conducted in diverse cereal and vegetable crop habitats in Slovenia in the period from 2006 to 2010. Over 330 samples containing primary or secondary parasitoids or both were taken. ...