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Prikaz rezultata 81-90 od 4781
Liver, gills, and skin histopathology and heavy metal content of the danube sterlet (acipenser ruthenus linnaeus, 1758)
(Setac Press, Pensacola, 2010)
The sterlet (Acipenser ruthenus L.) is a bottom-feeding fish species with a direct exposure to contaminants from water and sediments. Although heavy metal pollution is believed to be one of the main threats to the sterlet ...
Preliminary organic geochemical investigation of Upper-Jurassic dolomites of Plješvica (Yugoslavia)
(Elsevier, 1984)
The amounts and compositions of the total and soluble organic matter were determined in 17 samples of Upper Jurassic dolomites from the slopes of the mountain Plješivica (Lika, Yugoslavia; locations Vrelo-Mrsinj Grad, ...
Effect of mechanical-chemical activation of flotation tailings on removal the useful components / Uticaj mehano-hemijske aktivacije flotacijske jalovine na stepen izdvajanja korisnih komponenti
(Rudarski radovi, Bor, 2010)
The presented results refer to the investigation of effect the mechanical-chemical activation of flotation tailings on copper, iron and sulfur leaching degree in the sulfuric-chloride solution with the addition of H2O2 as ...
Spectroscopy characterization of MnSe nanoclasters randomly distributed in HgMnTe single crystal
(Elsevier, 2012)
New semimagnetic semiconductor Hg0.91Mn0.09Te-MnSe mixture, grown by Bridgman method, was investigate by Atomic Force Microscopy, X-ray and far-infrared spectroscopy, in order to obtain the necessary feedback information ...
Investigation of interactions between surface water and petroleum-type pollutants
(Ecomed Publishers, Landsberg, 2005)
Background, Aims and Scope. In oil spill investigations, one of the most important steps is a proper choice of approaches that imply an investigation of samples taken from different sedimentary environments, samples of oil ...
Classification of stacking interaction geometries of terpyridyl square-planar complexes in crystal structures
(Royal Soc Chemistry, Cambridge, 2010)
Stacking interactions of terpyridyl square-planar complexes in crystal structures were studied analyzing data from the Cambridge Structural Database. In most of the crystal structures, two terpyridyl complexes were oriented ...
Oxygen reduction on single crystal platinum electrodes in phosphoric acid solutions / Redukcija kiseonika na monokristalnim platinskim elektrodama u rastvorima fosforne kiseline
(Belgrade : Serbian Chemical Society, 1999)
Oxygen reduction reaction has been studied on Pt low index planes in 0.1 M and 85% H3PO4 using hanging meniscus rotating disc electrode technique. The first-order kinetics of O2 reduction reaction was found for all three ...
An example of suppression of spurious stop-bands of EBG band-stop filter
(Udruženje za mikrotalasnu tehniku i tehnologiju i IEEE MTT-S Chapter-a Srbije, Beograd, 2011)
Based on the well known theory of infinite periodic structures, analytical theory of EBG (electromagnetic band gap) cells suppressing 6 higher (spurious) stop-bands is developed. Using such cells in a cascade the ...
Sesquiterpene lactones from Achillea crithmifolia
(Elsevier, 1991)
The isolation of guaianolides rupicolin-A, rupicolin-B, their acetates and a new germacranolide 1β,10α-epoxy-3β,9β-diacetoxy-11α,13-dihydrocostunolide, identified by means of PS DQF COSY and PS NOESY, from Achillea ...
New method for monitoring of the oxygen reduction process in aqueous solutions / Nova metoda za monitoring procesa redukcije kiseonika u vodenim rastvorima
(Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd, 2009)
Composite electrode material based on NaX zeolite and silver dispersed both inside zeolite cavities and between the zeolite crystals, in nitrogen purged 0.1M NaOH solution, yielded the cyclic voltammograms corresponding ...