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Prikaz rezultata 21-30 od 45
Printed antenna with circular polarization and a Tunable elevation angle
(Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd, 2014)
Circularly polarized antenna with a possibility of tuning the elevation angle i.e. obtaining maximum radiation in either broadside or directions declined from the zenith is presented in the paper. The antenna consists of ...
The synthesis of CaO loaded onto Al2O3 from calcium acetate and its application in transesterification of the sunflower oil / Sinteza CaO nanešenog na Al2O3 od prekursora kalcujum acetata i njegova primena u transesterifikaciji suncokretovog ulja
(Tehnološki fakultet, Leskovac, 2015)
Transesterification of sunflower oil was carried out over CaO loaded onto γ-Al2O3 as heterogeneous base catalysts. The solid base catalysts were synthesized by the modified wet impregnation of calcium acetate monohydrate ...
Revitalization and development of facilities for production of higher order petrochemical derivatives: Precondition for survival of Serbian petrochemical industry / Revitalizacija i razvoj proizvodnje derivata više faze dorade - preduslov opstanka Srpske petrohemijske industrije
(Institut za istraživanja i projektovanja u privredi, Beograd, 2009)
Development of petrochemical industry in Serbia has started in the early 70s of the last century. By disintegration of Yugoslavia the dimension of 'domestic' market for petrochemicals was first drastically reduced, what ...
Compound analysis of essential oils from lovage and celery fruits obtained by headspace extracton / Analiza komponenti etarskih ulja plodova selena i celera dobijenih headspace ekstrakcijom
(Poljoprivredni fakultet, Novi Sad, 2015)
Lovage and celery are important as vegetables, spices and medicinal herbs rich in essential oil, which gives them a characteristic aroma. In addition, they have great pharmacological potential and the possibility of being ...
Essential oil composition from sweet and bitter fennel fruits from Serbia / Hemijski sastav etarskog ulja plodova slatkog i gorkog komorača iz Srbije
(Institute for Medicinal Plants Research "Dr. Josif Pancic", 2015)
Fennel (Foeniculum vulgare Mill.) is aromatic plant from Apiaceae family. There are two types that have commercial importance, sweet fennel Foeniculum vulgare var. dulce, and bitter fennel - Foeniculum vulgare var. vulgare. ...
Hydroxyapatite coatings on TiO2 nanotubes / Prevlake hidroksiapatita na nanotubama oksida titana
(Belgrade, Serbia : Engineering Society for Corrosion, 2010)
The aim of this work was to obtain nanotubular TiO2 layer by anodization of titanium substrate, and to prepare hydroxyapatite (HAP) coatings by electrophoretic deposition over nanotubular TiO2 layer. The presence of fluoride ...
Comparison of morphology of powder particles obtained by the constant and periodically changing regimes of electrolysis / Poređenje morfologije čestica praha dobijenih konstantnim i periodično promenljivim režimima elektrolize
(Belgrade, Serbia : Engineering Society for Corrosion, 2011)
Morphologies of copper powder particles obtained by both potentiostatic and pulsating overpotential (PO) regimes of electrolysis were analyzed using the technique of scanning electron microscopy (SEM). The parameters of ...
The assessment and distribution of heavy metals in surface sediments from the reservoir 'Barje': Serbia / Procena sadržaja i raspodele teških metala u površinskom sedimentu akumulacije 'Barje' - Srbija
(Savremene tehnologije, 2014)
In this study, the nature of the association of heavy metals (Fe, Co, Ni, Cu, Cd, Pb, Mn, and Zn) in sediments of the recent reservoir 'Barje' (Leskovac, Serbia) was investigated. The aim was to make the identification of ...
Nanomaterials environmental risks and recycling: Actual issues / Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja
(University of Belgrade, Technical Faculty in Bor, 2014)
Nanotechnologies are being spoken of as the driving force behind a new industrial revolution. Nanoscience has matured significantly during the last decade as it has transitioned from bench top science to applied technology. ...
Sustainable development and polymer materials / Održivi razvoj i polimerni materijali
(University of Belgrade, Technical Faculty in Bor, 2011)
In the last twenty years, a rapid growth in the application of polymer materials occurred in practically all fields of human activities, especially for packaging. Never the less, in the world and our country, quite often ...