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INFLUENCE OF MODIFIED MONTMORILLONITES ON FORMALDEHYDE CONTENT IN UREA-FORMALDEHYDE/MONTMORILLONITE COMPOSITES
(University of Novi Sad, Faculty of Technology Novi Sad, 2022-10-20)The effect of different montmorillonites (KSF and K10) and their modifications (Na-KSF, Na-K10) on content of formaldehyde-FA (free and liberated) modified urea-formaldehyde (UF) composites was investigated. KSF and K10 ... -
The influence of montmorillonite activating method on the hydrolytic stability of urea-formaldehyde resin
(Faculty of Technology, Leskovac, 2019-10-18)Montmorillonite clays are of great importance for processes such as adsorption and catalysis and polymer composites fabrication . The textural properties of this filler can be modified to increase their application. In ... -
The influence of the modification of the montmorillonite KSF and K10 on the hydrolytic stability of UF composites
(2021-09-24)In this work, the hydrolytic stability of composites based on the urea-formaldehyde resin (UF) and montmorillonite-MMT (K1 0 and KSF) as a formaldehyde (FA) scavenger was investigated. K10 and KSF were activated by sodium ... -
The influence of the type of activation of the montmorillonite of hydrolytic stability of the urea-formaldehide nanocomposite
(University of Novi Sad, Faculty of Technology Novi Sad, 2019-10-10)In this work the hydrolytic stability of nano-composites based on urea-formaldehyde resin (UF) and montmorillonite (K10) as formaldehyde scavenger was investigated. K10 was activated by sulfuric acid (H2SO4) with and without ... -
Influence of the Wavelength on the Bandwidth in W-Type Plastic Optical Fibers
(Springer Link, 2021-07-03)We investigate the bandwidth and steady-state losses of multimode W-type plastic optical fibers solving the time-dependent power flow equation and show how the bandwidth in W-type plastic optical fibers can be enhanced ... -
Influence of wavelength on equilibrium mode distribution and steady state distribution in W-type plastic optical fibers
(IOP Science, 2020-05-27)Wavelength dependence of equilibrium mode distribution (EMD) and steady state distribution (SSD) in W-type plastic optical fibers (POFs) is investigated in this paper for parametrically varied width of the fiber’s ... -
Influence of wavelength on the bandwidth of W-type plastic-clad silica optical fibers
(IOP Science, 2020-01-07)The bandwidth and steady-state loss of multimode W-type plastic-clad silica optical fibers are investigated by solving the time-dependent power flow equation. The results show how the bandwidth of W-type plastic-clad ... -
Influence of width of launch beam distribution and mode coupling on transmission characteristics of W-type plastic optical fibers
(IOP Science, 2021-07-16)We show strong effects of width of the launch beam’s angular distribution on bandwidth and mode coupling in W-type plastic optical fibers (POFs). In general, the broader this width, the stronger the coupling and the lower ... -
Influence of zero boresight and non-zero boresight pointing error on BER FSO transmission over Malaga atmospheric channel
(Oficyna Wydawnicza Politechniki Wroclawskiej, 2018-03-22)In this paper, the influence of a zero and a non-zero boresight pointing errors on the performances of free-space optic transmission over the Málaga atmospheric turbulence channel is considered. Closed form expressions for ... -
Infrared wavelength dependence of leaky mode losses and steady state distribution in W-type glass optical fibers
(Elsevier, 2018-03-13)Infrared wavelength dependence of leaky mode losses and steady state distribution (SSD) in W-type glass optical fibers (doubly clad fibers with three layers) is investigated in this paper for parametrically varied ... -
Initial improvement of the hybrid accelerated gradient descent process
(Cambridge University Press, 2018-08-01)We improve the convergence properties of the iterative scheme for solving unconstrained optimisation problems introduced in Petrovic et al. [‘Hybridization of accelerated gradient descent method’, Numer. Algorithms (2017), ... -
Interaction between gold nanoparticles and selected antitumor gold complexes
(Society of Physical Chemists of Serbia, 2018-09-28)The paper presents the results of study of interaction between citrate capped gold nanoparticles (AuNPs) and some antitumor gold complexes with pyridine ligands (AubipyC, AubipyOH and AupyOAc), in order to elucidate the ... -
Investigation of bandwidth in multimode graded-index plastic optical fibers
(Optica Publishing Group, 2021-09-13)A new method is proposed for investigating the bandwidth in multimode graded-index plastic optical fibers (GI POFs). By numerically solving the time-dependent power flow equation, bandwidth is reported for a varied launch ... -
Iron Oxide Nanoparticles: Synthesis, Characterization and Application
In this work, we present a review of the simple synthesis of iron(III)-oxide nanoparticles (Fe2O3 NPs), their characterization and potential application as nanosorbents and voltammetric sensors. Fe2O3 NPs were obtained ... -
Irradiation resistance of elastomeric composites based on NR/CSM blend and waste rubber powder
(RAD Centre, Niš, Serbia, 2021-06-14)Effect of waste rubber particles (WTR) size on elastomers based on natural rubber and chlorosulfonated polyethylene rubber (NR/CSM= 50:50) was studied. Two types of WTR with different particle size (150–250 μm and 450–600μm) ... -
Jačina ambijentalnog doznog eкvivalenta i кorelacija sa meteorološкim parametrima u gradu Valjevu i oкolini
Ради процене стања радиоактивности у животној средини, спроведена су мерења јачине амбијенталног дозног еквивалента у ваздуху на територији града Ваљева и околине. Истраживање је спроведено Гајгер-Милеровим бројачем ... -
Knot Bending
In this paper we point out the geometric aspect of knots. By the term knot we mean a closed self-avoiding curve in a 3-dimensional Euclidean space. We consider infinitesimal bending of knots and examine the behavior of ... -
Knot Energy
(Kyung Hee University , RIRCM, OCAMI & BK21PLUS, 2019-07-31)We discuss infinitesimal bending of curves and knots in R3. A brief overview of the results on the infinitesimal bending of curves is outlined. Change of the Willmore energy, as well as of the total curvature, total ... -
KORELACIJA IZMEĐU NAČINA AKTIVIRANJA MONTMORILONITA K10 I SADRŽAJA FORMALDEHIDA U UREA-FORMALDEHIDNIM KOMPOZITIMA
(Faculty of Management Herceg Novi, 2022-05-26)U ovom radu je izvršeno poređenje načina aktiviranja montmorilonita (MMT) K10 sa sadržajem formaldehida (FA) u urea-formaldehidnim (UF) kompozitima. Uzorci MMT-a K10 su aktivirani na dva načina: termički i pomoću sumporne ... -
KVALITATIVNA ANALIZA EFEKATA ELEKTRONSKOG UČENJA NA UNUTRAŠNJU MOTIVACIJU STUDENATA
U nastavi studenata na visokoškolskim ustanovama i studijskim programima elektronsko učenje ima značajnu ulogu. Cilj ovog istraživanja koje je sprovedeno na Alfa BK Univerzitetu u Beogradu je istražiti odnos između ...