Pretraživanje
Prikaz rezultata 11-20 od 69
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. ...
Određivanje Štarkovog pomaka i stope jonizacije atomskih sistema sa jednim i sa dva aktivna elektrona u spoljašnjem električnom polju metodom kompleksne rotacije
(Универзитет у Нишу, Природно-математички факултет, 20-02-2018)
The subject of this Doctoral Dissertation is the study of atomic
systems in external static electric field, which can be described
using models with one or two active electrons. The main aim of the
dissertation is ...
Sinteza biodizela na aktiviranom katalizatoru na bazi CaO: optimizacija procesnih parametara i efekti korišćenja biodizela / Synthesis of biodiesel over activated cao-based catalyst: optimisation of process parameters and effects of using biodiesel
(Универзитет у Нишу, Природно-математички факултет, 25-12-2014)
The influence of the physicochemical properties of a series of
CaO catalysts activated at different temperatures on the
biodiesel production was investigated. These catalysts show
dissimilar yields in the transesterification ...