Eight International Conference on radiation and applications in various fields of research, RAD8, Virtual Conference, Herceg Novi, Montenegro, July 20-24, 2020.
• 01 Apr 2024
Gulan, Ljiljana • Spasić, Dušica • Živković Radovanović, Jelena • Drobac, Boris
In order to establish radon levels in outdoor atmosphere radon measurements were performed during the fifteen days by alpha spectrometric measuring method with detector Airthings Corentium Home. Measuring point was at 0.5 m height. Since meteorological conditions can have a significant impact on radon measurements, parameters such as temperature, humidity, precipitation, wind speed were also noted by SENCOR SWS 9700. The results of short term outdoor radon concentration were read out daily and v ...
Eight International Conference on radiation and applications in various fields of research, RAD8, Virtual Conference
• 01 Apr 2024
Gulan, Ljiljana • Forkapić, Sofija • Spasić, Dušica • Živković Radovanović, Jelena • Vučković, Biljana
Spike-like peaks in the concentration of radon gas prior to a major earthquake are attributed to release different gases (CO2, CH4, H2S, SO2, H2 suitable for the transport of radon to the earth’s surface) due to pre-seismic stress or fracturing of the rock. Passive radon technique based on charcoal canister test kit conducted in the environment of Kosovska Mitrovica in summer and autumn period showed inexplicable results. Since radon levels are sensitive to short-term fluctuations, an active tec ...
13th Simposium “Novel tehnologies and economic development”, Leskovac (2019)
(Faculty of Technology, Leskovac)
• 18 Oct 2019
Kostić, Marija • Čanaćević, Milena • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Petković, Branka • Marković, Gordana • Budinski-Simendić, Jaroslava
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 this work the hydrolytic stability of
composites based on urea-formaldehyde resin (UF) and eco-friendly montmorillonite (KSF) as formaldehyde scavenger was investigated. KSF was activated by sulfuric acid (H2S04) with and without mechanical mixing .The degree activation was det ...
8. Simpozijum Hemija i zaštita životne sredine, Kruševac (2018)
(Srpsko hemijsko drustvo)
• 30 May 2018
Jovanović, Vojislav • Samaržija-Jovanović, Suzana • Jevtić, Sonja • Petković, Branka • Marković, Gordana • Marinović-Cincović, Milena
Zbog emisije formaldehida (CH2O) iz drvenih proizvoda, gde se urea- formaldehidne
(UF) smole, izmedu ostalog, koriste za impregnaciju drvenih panela koje se koriste u
unutrašnjosti stambenih i drugih objekata pozeljno je da procenat slobodnog formaldehida
(CH2O) u samoj smoli bude sto manji, jer je poznato da formaldehid ima štetno dejstvo
na čoveka, odnosno ceo živi svet. Pare formaldehida jako nadražuju disajne puteve.
Koncentracije od 10-20 ppm otežavaju disanje, a koncentracije od 650 p ...
XXIV Savetovanje o biotehnologiji, Čačak, Srbija
(UNIVERZITET U KRAGUJEVCU, AGRONOMSKI FAKULTET U ČAČKU)
• 15 Mar 2019
Budinski-Simendić, Jaroslava • Jovanović, Slaviša • Marković, Gordana • Aleksić, Vojislav • Jovanović, Vojislav • Tanasić, Jelena • Samaržija-Jovanović, Suzana
Poljoprivreda i poljoprivredna industrija zahtevaju elastomeme proizvode koji mogu izdržati dugotrajnu izloženost ekstremnim naponima i hemikalijama. Elastomeri dobijeni od etilen-propilen-dienskog kaučuka (EPDM) nalaze široku primenu u poljoprivredi. Ovaj prekursor mreže je nepolaran i materijali na osnovu njega imaju izvanrednu otpomost na uticaj ozona, visoke temperature i polame medije i zbog toga manje podležu reakcijama oksidacije i termičke degradacije. Umreženi EPDM je pogodan za upotreb ...
XXIII Savetovanje o biotehnologiji, Čačak, Srbija
(Univerzitet u Kragujevcu, Agronomski fakultet u Čačku)
• 09 Mar 2018
Kojić, Dejan • Vukić, Nevena • Samaržija-Jovanović, Suzana • Erceg, Tamara • Jovičić, Mirjana • Aleksić, Vojislav • Ristić, Ivan • Mićić, Vladan
Kod recikliranja otpadne gume neophodno je poznavati hemijski sastav
otpadnog proizvoda, ukoliko će se on koristiti u recepturama za nove hibridne
elastomerne materijale. Kompozitni elastomerni materijali dobijeni od praha otpadne
gume imaju veoma raznovrsnu primenu (podovi na farmama, sportski stadioni,
dobijanje pneumatika, u građevinarstvu kao materijali za zaštitu od vibracija itd). Cilj
ovog rada je bio da se dobiju elastomerni kompoziti na osnovu reciklirane gume.
Sintetisano je neko ...
2nd International conference on Advanced Production and Procesing-ICAPP 2022, Novi Sad, Serbia
(University of Novi Sad, Faculty of Technology Novi Sad)
• 20 Oct 2022
Ristić, Mirjana • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Kostić, Marija • Jovanović, Tijana • Marković, Gordana • Marinović-Cincović, Milena
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 were modified by sodium chloride (NaCl). A total of four samples were synthesized, with the designations UF/KSF, UF/Na-KSF, UF/K10, and UF/Na-K10, under the same conditions. The content of free FA was determined by the bisulfite method. The hydrolytic stability of modified UF res ...
2nd International conference on Advanced Production and Procesing-ICAPP 2022, Novi Sad, Serbia
(University of Novi Sad, Faculty of Technology Novi Sad)
• 20 Oct 2022
Petković, Branka • Kostić, Marija • Samaržija-Jovanović, Suzana • Ivanović, Aleksandra • Laban, Bojana • Veljović, Djordje • Stanković, Dalibor
Domestic high performance electrode material was prepared by thermolysis of in situ synthesized urea-formaldehyde (UF) resins modified with Fe(III) nitrate and Ti(IV) oxide in different combinations: iron salt and UF resins (SynFe/UF-TP), titan oxide and UF resins (SynTi/UF-TP) and both metal compounds together and UF resins (SynFe+Ti/UF-TP). For comparison, the thermolysis prepared materials produced by simple physical mixture of metal compounds and UF resins (Fe/UF-TP, Ti/UF-TP and Fe+Ti/UF-TP ...
10th Jubilee International conference on radiation in various fields of research, Spring edition (RAD 2022)
• 13 Jun 2022
Ristić, Mirjana • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Petković, Branka • Kostić, Marija • Jovanović, Tijana • Marković, Gordana • Marinović-Cincović, Milena
The effect of γ–irradiation on hydrolytic stability of nano-silica, nano-titania, and wood flour (WF) modified urea-formaldehyde (UF) resins was investigated. Modified UF resin with wood flour (Pinus silvestris L.) as natural filler and modified UF resin with a mixture of SiO2/WF and TiO2/WF fillers were synthesized. A total of five samples were synthesized, with the designations UF/SiO2, UF/TiO2, UF/WF, UF/SiO2/WF, and UF/TiO2/WF, under the same conditions. The content of free formaldehyde (FA) ...
XI International conference of social and technological development- STED 2022, Trebinje, Republic of Srpska, B&H
(University PIM, Banja Luka, Republic of Srpska, B&H)
• 02 Jun 2022
Kostić, Marija • Samaržija-Jovanović, Suzana • Cakić, Suzana • Ristić, Ivan
Polymers are the subject of intensive research and development, not only in science but also in industry. In the last few years, many studies have been conducted on conjugated polymers, and this study of polymers has revealed their morphological characteristics and their unique electrochemical properties, which has attracted many researchers from different fields to use their versatility as a tool for technological progress. The intensive field of research is covered by the synthesis, characteri ...
