Зборник на трудови Трета меѓународна конференција за образованието по математика, физика и сродни науки
(Природно‐математички факултет, Скопје)
• 08 May 2022
Đokić, Boban • Milentijević, Miljana • Drljača, Branko
Развој савремених технологија утиче на промену живота људи све већом брзином.
Напредак технологије омогућава примену великог броја мултимедијалних уређаја помоћу
којих се ученицима могу приближити и поједноставити појаве које је тешко дочарати помоћу
стандардних метода предавања табла, креда и презентација. У овом раду је кроз неколико
примера из физике, у оквиру једне наставне теме, предложено могуће решење за извођење
наставе у школама које немају адекватно опремљене кабинете за наста ...
XIV Conference of Chemists, Technologists and Ecologists of the Republic of Srpska Banja Luka, Bosnia and Hercegovina
(University in Banjaluka, Faculty of Technology)
• 22 Oct 2022
Jovanović, Slavica • Todorović, Dragana • Stojanović-Krasić, Marija • Kevkić, Tijana • Milojević, Nenad • Drljača, Branko
Photonic lattices represent are periodic structures, suitable for investigation of wave propagation
and localization. Within these systems, different phenomenon such as discrete difraction, lattice
solitons, Anderson localization and defects localizations can be analyzed. The lattice periodicity in
one or more dimensions leads to the zonal structure in terms of existing permitted and forbidden
zones which can allow or stop light beam propagation. Manipulation with the zonal structure can ...
Technologists and Ecologists of the Republic of Srpska Banja Luka, Bosnia and Hercegovina
(University in Banjaluka, Faculty of Technology)
• 22 Oct 2022
Todorović, Dragana • Jovanović, Slavica • Kevkić, Tijana • Stojanović Krasić, Marija • Milojević, Nenad • Drljača, Branko
Climate change is one of the most significant environmental problems and is affecting the entire
global population. Renewable sources of energy (RES) are vital to deal with this problem. Solar
energy, especially photovoltaic (PV) technologies, is one of the most promising renewable energy
sources and is, therefore, one of the fastest-growing industries in this field. Thus, this paper focuses
on the performance analyses of rooftop on-grid PV system in real climatic conditions in Niš
(Se ...
International Scientific and Technical Conference “Energy, Infocommunication Technologies and Higher Education”
(МИНИСТЕРСТВО НАУКИ И ВЫСШЕГО ОБРАЗОВАНИЯ РОССИЙСКОЙ ФЕДЕРАЦИИ Некоммерческое акционерное общество «Алматинский университет энергетики и связи имени Гумарбека Даукеева» Федеральное государственное бюджетное образовательное учреждение высшего образования «Казанский государственный энергетический университет»)
• 01 Jan 2023
Drljača, Branko • Savović, Svetislav • Kovačević, Milan S. • Simović, Ana • Kuzmanović, Ljubica • Djordjevich, Alexandar • Yussupova, Gulbakhar
In this paper recent advances in application of power flow equation to Wtype photonic crystal fibers (PCF) is presented. As known for many years power flow
equation has been proven to be best solution when transmission characteristics of multimode
optical fibers are to be modeled. Transmission properties of multimode optical fibers depend
strongly upon modal dispersion, mode-dependent attenuation and the rate of mode coupling.
Throughout years different simulation models have been develo ...
Air Quality, Atmosphere & Health
(Springer)
• 01 Apr 2024
Gulan, Ljiljana • Stajic, Jelena M. • Spasić, Dušica • Forkapić, Sofija
This study was conducted toevaluate the influence of thermal retrofit on radon levels in workrooms,and to determine whetherthe radon concentrationin the building changes after the application of retrofit measures.In thefirst survey, digital radon detector Airthings Corentium Homewas usedfor one month radon measurementsduring heating season 2018/19.The dailyaveraged radon concentrationsvaried from 37-573 Bq/m3for ten selectedworkrooms, while hourly averaged radon measurements showed extreme varia ...
Indoor Air
(Wiley)
• 01 Apr 2024
Ljiljana, Gulan • Forkapić, Sofija • Spasić, Dušica • Radovanović Živković, Jelena • Hasman, Jan • Lakatoš, Robert • Samardžić, Selena
This study was performed to investigate radon levels in dwellings in the mining area
near the town of Kosovska Mitrovica. The Passive radon technique based on the charcoal
canister test kit conducted in summer and autumn 2019 showed unexpected results.
The reference level of 300 Bq/m3 for indoor radon concentration was exceeded in 15 of 26 dwellings. Preliminary measurements of gamma dose rate in some dwellings built from local stone showed values from 0.30 to 0.45 μSv/h, while 75% of measure ...
Environmental Science and Pollution Research
(Springer)
• 01 Apr 2024
Gulan, Ljiljana • Stajic, Jelena M. • Milenkovic, Biljana • Zeremski, Tijana • Milic, Stanko • Krstic, Dragana
In most European countries, each adult citizen drinks on averagemore than 20 L of wine every year. Three popular wine-growing areas (Aleksandrovac, Topola, and Orahovac) in Serbia were studied in order to investigate the abundance and uptake of elements from vineyard soil to plants. The specific activities of radionuclides (226Ra, 232Th, 40K, 137Cs, and 7Be) were measured in soil, leaves, and grape berries. 226Ra and 232Th were positively correlated with silt and clay and negatively correlated w ...
Journal of Radioanalytical and Nuclear Chemistry
(Springer)
• 01 Apr 2024
Gulan, Ljiljana • Jakšić, Tatjana • Milenkovic, Biljana • Stajic, Jelena M. • Vasić, Predrag • Simić, Zoran
The study investigates mosses (Hypnum cupressiforme Hedw.) as bioindicators of pollution in three non-urban mountain areas of northern Kosovo and Metohija regions. Concentrations of radionuclides and metals were measured in moss and soil samples. 137Cs specific activities in soil were strongly correlated with organic matter content. 137Cs in mosses was
significantly higher in coniferous than in deciduous forests. 7Be measured in moss samples was increasing with altitude. Concentrations of Ni, C ...
Chemosphere
(Elsevier)
• 01 Apr 2024
Gulan, Ljiljana • Penjišević, Ivana • Stajic, Jelena M. • Milenković, Biljana • Zeremski, Tijana • Stevanović, Vladica • Valjarević, Aleksandar
This study aims to estimate geothermal potential, radioactivity levels, and environmental pollution of sixmost popular spas in Central Serbia (Ovcar, Gornja Trepca, Vrnjacka, Mataruska, Bogutovacka and Sokobanja), as well as to evaluate potential exposure and health risks for living and visiting population. Thermal possibilities of the studied spas showed medium and low geothermal potential with totalthermal power of 0.025MW. Gamma dose rates in air varied from 63 to 178 nSv h-1. Specific activi ...
Radiation Protection Dosimetry
• 01 Apr 2024
Yarmoshenko • Žunić, Zora S. • Mishra, Rosaline • Čeliković, Igor • Stojanovska, Zdenka • Yarmoshenko, Ilia V. • Malinovsky, Georgy • Veselinović, Nenad • Gulan, Ljiljana • Ćurguz, Zoran • Vaupotič, Janja • Ujic, Predrag • Kolarž, Predrag • Milić, Gordana • Kovacs, Tibor • Sapra, Balvindar K. • Kavasi, Norbert • Sahoo, Sarata K.
The main contribution to population exposure is due to radon and thoron progenies and not radon itself. The aim of this study was therefore to estimate annual effective dose using the results of Direct Radon and Thoron Progeny Sensors were exposed in 69 selected schools and 319 dwellings in several regions of Balkans: in Serbia: regions of Sokobanja and Kosovo and Metohija, Republic of Macedonia, Republic of Srpska and Slovenia. Obtained average total effective doses are in the range from 0.22 m ...
