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Приказ резултата 11-20 од 124
Sinteza katjonskih ligno-celuloznih sorbenata i primena za uklanjanje anjonskih polutanata iz vode
(Универзитет у Нишу, Природно-математички факултет, 10-07-2018)
Тhe aim of this dissertation was the development of new cationic sorbents, based on a modified lignocellulosic precursor (shell of L. vulgaris as a cheap and easily available plant material), intended for the removal of ...
Hemijski sastav, antibakterijska, antioksidativna i genotoksična aktivnost lišajeva Umbilicaria crustulosa (Ach.) Frey, Umbilicaria cylindrica (L.) Delise, Hypogymnia tubulosa (Schaer.) Hav. i Evernia prunastri (L.) Ach.
(Универзитет у Нишу, Природно-математички факултет, 13-11-2019)
Through this doctoral thesis chemical composition of acetone, ether, ethyl acetate and dichloromethane extracts and antioxidant, antibacterial and genotoxic activity of acetone extracts of the lichens Umbilicaria crustulosa ...
Hemometrijska analiza rezultata hemijskih i bioloških istraživanja farmakološki značajnih biljaka / Chemometric analysis of chemical and biological studies of pharmacologically important plants
(Универзитет у Нишу, Природно-математички факултет, 30-09-2014)
Plants synthesize primary and secondary metabolites from simple molecules, among wich inorganic compounds are of great importance. Examining the extractability and solubility of the soil elements helps us explicate the ...
Bioakumulacija metala u odabranim vrstama voća i lekovitih biljaka / Bioaccumulation of metals in selected types of fruits and medicinal herbs
(Универзитет у Нишу, Природно-математички факултет, 23-06-2015)
Plants accumulate metals from the soil during growth. Environmental polution can lead to increased metal uptake into the body through food. Therefore, plants have medicinal properties but also can have toxic effects on ...
Inflatorni kosmološki modeli sa tahionskim i radionskim poljima
(Универзитет у Нишу, Природно-математички факултет, 15-06-2017)
A popular class of the inflationary cosmological models is based
on an introduction of a scalar field with nonstandard tachyonic
Lagrangian of the Dirac-Born-Infeld (DBI) type. A potentially
fundamental role of the ...
Ekstremalni problemi i algoritmi za grafovske invarijante bazirane na sopstvenim vrednostima i rastojanjima
(Универзитет у Нишу, Природно-математички факултет, 27-03-2011)
U ovoj disertaciji grafovi se izučavaju koristeći invarijante bazirane na sopstvenim vrednostima matrice susedstva, Laplasove matrice i matrice rastojanja. Spektri grafova imaju značajne primene kod pretraživanja Interneta, ...
Uopšteni inverzi proizvoda operatora
(Универзитет у Нишу, Природно-математички факултет, 2011)
U ovoj disertaciji izloženi su originalni rezultati koji se mogu podeliti u dve celine. Najpre se na dva različita načina uvodi razlaganje elemenata iz klase kvadratnih singularnih kompleksnih matrica indukovano uopštenim ...
Vremenski nizovi sa negativnim celobrojnom vrednostima generisani zavisnim brojačkim nizovima / Time series with non-negative integer values based on dependent counting series
(Универзитет у Нишу, Природно-математички факултет, 24-12-2014)
New generalized thinning operators based on Bernoulli
sequences of dependent random variables are presented In
this thesis. Using these operators autoregressive models of
the first order with non-negative integer values ...
Električni proboji u vazduhu: novi eksperimenti o statistički i numerički modeli / Electrical breakdowns in air: new experiments and statistical and numerical models
(Универзитет у Нишу, Природно-математички факултет, 30-02-2015)
Experimental work was carried out in laboratory for physics of
ionized gases and lasers in Faculty of Sciences and
Mathematics in Niš. Scanning electron microscopy and energy
dispersive X-ray spectroscopy of electrodes ...
Strukturna karakterizacija CaMnOз nanoprahova dopiranih itrijumom i teorijsko modelovanje stabilnosti perovskitske strukture / Structural characterization of the yttrium doped camno3 nanopowders and theoretical modelling of the perovskite structure stability
(Универзитет у Нишу, Природно-математички факултет, 24-12-2014)
In the first part of dissertation structural, microstructural and phase analysis of
the nanopowders with the general formula Ca1-xYxMnO3 (0 ≤ x ≤ 1) were performed
using XRPD diffraction technique and Rietveld refinement. ...