TY  - JOUR
AU  - Drašler, Marko
AU  - Čeliković, Igor T.
AU  - Kandić, Aleksandar B.
AU  - Pantelić, Gordana K.
AU  - Milanović, Tamara, J.
AU  - Samolov, Aleksandra D.
AU  - Lončar, Boris B.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10239
AB  - This paper aims to estimate a potential radiological risk from different kinds of coals used for domestic heating in Serbia, by measuring the activity concentration of radionuclides and radon exhalation rate. The obtained radon mass exhalation rate ranges from (5.3 ± 3.1) mBqkg–1s–1 to (70.3 ± 9.4) mBqkg –1s–1 and was highest for lignite type of coal. It is estimated that coal stored in the basement could contribute up to 50 Bqm–3 of indoor radon concentration at the ground level. Activity concentrations of 226Ra, 232Th, 40K, 238U, 235U, and 210Pb in analysed coal samples agree with previously reported concentrations of coal used in Serbia. The values of radium equivalent concentration and external hazard index indicate that the used coal does not represent a significant radiation hazard.
T2  - Nuclear Technology & Radiation Protection
T1  - Estimation of radiological impact on residents due to household storage of coal used for heating in Serbia
VL  - 36
IS  - 3
SP  - 284
EP  - 288
DO  - 10.2298/NTRP2103284D
UR  - conv_6271
ER  - 

@article{
author = "Drašler, Marko and Čeliković, Igor T. and Kandić, Aleksandar B. and Pantelić, Gordana K. and Milanović, Tamara, J. and Samolov, Aleksandra D. and Lončar, Boris B.",
year = "2021",
abstract = "This paper aims to estimate a potential radiological risk from different kinds of coals used for domestic heating in Serbia, by measuring the activity concentration of radionuclides and radon exhalation rate. The obtained radon mass exhalation rate ranges from (5.3 ± 3.1) mBqkg–1s–1 to (70.3 ± 9.4) mBqkg –1s–1 and was highest for lignite type of coal. It is estimated that coal stored in the basement could contribute up to 50 Bqm–3 of indoor radon concentration at the ground level. Activity concentrations of 226Ra, 232Th, 40K, 238U, 235U, and 210Pb in analysed coal samples agree with previously reported concentrations of coal used in Serbia. The values of radium equivalent concentration and external hazard index indicate that the used coal does not represent a significant radiation hazard.",
journal = "Nuclear Technology & Radiation Protection",
title = "Estimation of radiological impact on residents due to household storage of coal used for heating in Serbia",
volume = "36",
number = "3",
pages = "284-288",
doi = "10.2298/NTRP2103284D",
url = "conv_6271"
}

Drašler, M., Čeliković, I. T., Kandić, A. B., Pantelić, G. K., Milanović, T. J., Samolov, A. D.,& Lončar, B. B.. (2021). Estimation of radiological impact on residents due to household storage of coal used for heating in Serbia. in Nuclear Technology & Radiation Protection, 36(3), 284-288.
https://doi.org/10.2298/NTRP2103284D
conv_6271

Drašler M, Čeliković IT, Kandić AB, Pantelić GK, Milanović TJ, Samolov AD, Lončar BB. Estimation of radiological impact on residents due to household storage of coal used for heating in Serbia. in Nuclear Technology & Radiation Protection. 2021;36(3):284-288.
doi:10.2298/NTRP2103284D
conv_6271 .

Drašler, Marko, Čeliković, Igor T., Kandić, Aleksandar B., Pantelić, Gordana K., Milanović, Tamara, J., Samolov, Aleksandra D., Lončar, Boris B., "Estimation of radiological impact on residents due to household storage of coal used for heating in Serbia" in Nuclear Technology & Radiation Protection, 36, no. 3 (2021):284-288,
https://doi.org/10.2298/NTRP2103284D .,
conv_6271 .

TY  - JOUR
AU  - Čeliković, Igor T.
AU  - Pantelić, Gordana K.
AU  - Živanović, Miloš Z.
AU  - Vukanac, Ivana
AU  - Krneta-Nikolić, Jelena D.
AU  - Kandić, Aleksandar
AU  - Lončar, Boris B.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9052
AB  - The second most important source of indoor radon, after soil beneath dwelling, is building material. With the increase in environmental awareness and new energy-saving policies, residents tend to replace the existing windows with tighter windows, which leads to a decrease in air exchange rate and consequently an increase in indoor radon concentration. In case of low exchange rates, dose caused by inhalation of radon and its progeny can exceed external dose originating from the radium content in the surrounding building material. In this paper, surface exhalation rates of radon ( 222 Rn) and thoron ( 220 Rn) from typical building materials used for construction and interior decoration of houses in Serbia were investigated. Surface exhalation rate measurements were performed using the closed-chamber method, while concentrations of radon and thoron in the chamber were continuously measured using an active device, RTM1688-2, produced by SARAD® GmbH. Finally, the impact of the replacement of windows on the indoor radon concentration was estimated.
T2  - Nukleonika
T1  - Radon and thoron exhalation rate measurements from building materials used in Serbia
VL  - 65
IS  - 2
SP  - 111
EP  - 114
DO  - 10.2478/nuka-2020-0017
ER  - 

@article{
author = "Čeliković, Igor T. and Pantelić, Gordana K. and Živanović, Miloš Z. and Vukanac, Ivana and Krneta-Nikolić, Jelena D. and Kandić, Aleksandar and Lončar, Boris B.",
year = "2020",
abstract = "The second most important source of indoor radon, after soil beneath dwelling, is building material. With the increase in environmental awareness and new energy-saving policies, residents tend to replace the existing windows with tighter windows, which leads to a decrease in air exchange rate and consequently an increase in indoor radon concentration. In case of low exchange rates, dose caused by inhalation of radon and its progeny can exceed external dose originating from the radium content in the surrounding building material. In this paper, surface exhalation rates of radon ( 222 Rn) and thoron ( 220 Rn) from typical building materials used for construction and interior decoration of houses in Serbia were investigated. Surface exhalation rate measurements were performed using the closed-chamber method, while concentrations of radon and thoron in the chamber were continuously measured using an active device, RTM1688-2, produced by SARAD® GmbH. Finally, the impact of the replacement of windows on the indoor radon concentration was estimated.",
journal = "Nukleonika",
title = "Radon and thoron exhalation rate measurements from building materials used in Serbia",
volume = "65",
number = "2",
pages = "111-114",
doi = "10.2478/nuka-2020-0017"
}

Čeliković, I. T., Pantelić, G. K., Živanović, M. Z., Vukanac, I., Krneta-Nikolić, J. D., Kandić, A.,& Lončar, B. B.. (2020). Radon and thoron exhalation rate measurements from building materials used in Serbia. in Nukleonika, 65(2), 111-114.
https://doi.org/10.2478/nuka-2020-0017

Čeliković IT, Pantelić GK, Živanović MZ, Vukanac I, Krneta-Nikolić JD, Kandić A, Lončar BB. Radon and thoron exhalation rate measurements from building materials used in Serbia. in Nukleonika. 2020;65(2):111-114.
doi:10.2478/nuka-2020-0017 .

Čeliković, Igor T., Pantelić, Gordana K., Živanović, Miloš Z., Vukanac, Ivana, Krneta-Nikolić, Jelena D., Kandić, Aleksandar, Lončar, Boris B., "Radon and thoron exhalation rate measurements from building materials used in Serbia" in Nukleonika, 65, no. 2 (2020):111-114,
https://doi.org/10.2478/nuka-2020-0017 . .

TY  - CONF
AU  - Stanković, Srboljub
AU  - Stojić, Tomislav
AU  - Lončar, Boris
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12123
AB  - Gas filled surge arresters are durable and reliable components for safe overvoltage conduction, that operate on the principle of ionization of the isolation medium – gas. Ionizing radiation impacts the properties of the arrester. This paper reports a comparative analysis of the effect of γ and X irradiation on the properties of commercial gas filled surge arresters in impulse operation mode, by application of a semiempiric method of measurement of impulse breach voltage and determination of the impulse (volt-second) characteristic
AB  - Gasni odvodnici prenapona su izdržljive i pouzdane komponente za bezbedno odvođenje prenapona, koje rade na principu jonizacije izolacionog medijuma – gasa. Jonizujuće zračenje utiče na karakteristike odvodnika. U ovom radu prikazana je uporedna analiza uticaja uticaja γ i X zračenja na osobine komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada, primenom poluempirijske metode merenja impulsnog probojnog napona i određivanja impulsne (volt-sekundne) karakteristike.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book
T1  - Uporedna analiza uticaja γ i X zračenja na karakteristike komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada
T1  - Comparative analysis of the effect of γ and X radiation to properties of commercial gas filled surge arresters in impulse mode
SP  - 545
EP  - 547
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12123
ER  - 

@conference{
author = "Stanković, Srboljub and Stojić, Tomislav and Lončar, Boris",
year = "2020",
abstract = "Gas filled surge arresters are durable and reliable components for safe overvoltage conduction, that operate on the principle of ionization of the isolation medium – gas. Ionizing radiation impacts the properties of the arrester. This paper reports a comparative analysis of the effect of γ and X irradiation on the properties of commercial gas filled surge arresters in impulse operation mode, by application of a semiempiric method of measurement of impulse breach voltage and determination of the impulse (volt-second) characteristic, Gasni odvodnici prenapona su izdržljive i pouzdane komponente za bezbedno odvođenje prenapona, koje rade na principu jonizacije izolacionog medijuma – gasa. Jonizujuće zračenje utiče na karakteristike odvodnika. U ovom radu prikazana je uporedna analiza uticaja uticaja γ i X zračenja na osobine komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada, primenom poluempirijske metode merenja impulsnog probojnog napona i određivanja impulsne (volt-sekundne) karakteristike.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book",
title = "Uporedna analiza uticaja γ i X zračenja na karakteristike komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada, Comparative analysis of the effect of γ and X radiation to properties of commercial gas filled surge arresters in impulse mode",
pages = "545-547",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12123"
}

Stanković, S., Stojić, T.,& Lončar, B.. (2020). Uporedna analiza uticaja γ i X zračenja na karakteristike komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada. in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book
Belgrade : ETRAN Society., 545-547.
https://hdl.handle.net/21.15107/rcub_vinar_12123

Stanković S, Stojić T, Lončar B. Uporedna analiza uticaja γ i X zračenja na karakteristike komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada. in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book. 2020;:545-547.
https://hdl.handle.net/21.15107/rcub_vinar_12123 .

Stanković, Srboljub, Stojić, Tomislav, Lončar, Boris, "Uporedna analiza uticaja γ i X zračenja na karakteristike komercijalnih gasnih odvodnika prenapona u impulsnom režimu rada" in IcETRAN 2020 : 7th International Conference on Electrical, Electronic and Computing Engineering and ETRAN 2020 : 64th National Conference on Electrоnics, Telecommunication, Computing, Automatic Control and Nuclear Engineering; Proceedings book (2020):545-547,
https://hdl.handle.net/21.15107/rcub_vinar_12123 .

TY  - JOUR
AU  - Rubinjoni, Luka Z.
AU  - Stanković, Srboljub
AU  - Lončar, Boris B.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9687
AB  - Cementation is the baseline technology for conditioning of low to intermediate level radioactive waste. Geopolymers, a class of alkali activated binders, are a promising new material for radioactive waste treatment. Coal fly-ash based geopolymers are a low-cost, low greenhouse gas footprint alternative to metakaolin based materials. Both the grouting of sludge/powders/liquids and encapsulation of solids/compacted waste rely on the grout maintaining optimal flow (rheological properties) during the mixing and pouring operations, and achieving a set leading to proper long term solidification (mechanical properties). The initial and final setting time for fly-ash geopolymer paste, based on the SRPS EN 196-3 standard, has been measured upon irradiation by gamma rays in a 60Co reference field positioned with a kerma air rate of 3.42 mGys–1. The binder paste was prepared using fly-ash from the TENT B power plant's electrostatic filters without further sieving, activated by water glass with module 1.5 and mixed with distilled water until a satisfactory flow was obtained, and poured into the sample and control molds. The initial and final setting times for the irradiated sample and non-irradiated control were determined by the Vicat apparatus. The irradiated sample demonstrated an 11 % shorter initial setting time, and 16 % shorter final setting time, compared to the control.
T2  - Nuclear Technology and Radiation Protection
T1  - The effect of 60Co gamma irradiation on coal fly-ash geopolymer paste setting time
VL  - 35
IS  - 2
SP  - 150
EP  - 153
DO  - 10.2298/NTRP2002150R
ER  - 

@article{
author = "Rubinjoni, Luka Z. and Stanković, Srboljub and Lončar, Boris B.",
year = "2020",
abstract = "Cementation is the baseline technology for conditioning of low to intermediate level radioactive waste. Geopolymers, a class of alkali activated binders, are a promising new material for radioactive waste treatment. Coal fly-ash based geopolymers are a low-cost, low greenhouse gas footprint alternative to metakaolin based materials. Both the grouting of sludge/powders/liquids and encapsulation of solids/compacted waste rely on the grout maintaining optimal flow (rheological properties) during the mixing and pouring operations, and achieving a set leading to proper long term solidification (mechanical properties). The initial and final setting time for fly-ash geopolymer paste, based on the SRPS EN 196-3 standard, has been measured upon irradiation by gamma rays in a 60Co reference field positioned with a kerma air rate of 3.42 mGys–1. The binder paste was prepared using fly-ash from the TENT B power plant's electrostatic filters without further sieving, activated by water glass with module 1.5 and mixed with distilled water until a satisfactory flow was obtained, and poured into the sample and control molds. The initial and final setting times for the irradiated sample and non-irradiated control were determined by the Vicat apparatus. The irradiated sample demonstrated an 11 % shorter initial setting time, and 16 % shorter final setting time, compared to the control.",
journal = "Nuclear Technology and Radiation Protection",
title = "The effect of 60Co gamma irradiation on coal fly-ash geopolymer paste setting time",
volume = "35",
number = "2",
pages = "150-153",
doi = "10.2298/NTRP2002150R"
}

Rubinjoni, L. Z., Stanković, S.,& Lončar, B. B.. (2020). The effect of 60Co gamma irradiation on coal fly-ash geopolymer paste setting time. in Nuclear Technology and Radiation Protection, 35(2), 150-153.
https://doi.org/10.2298/NTRP2002150R

Rubinjoni LZ, Stanković S, Lončar BB. The effect of 60Co gamma irradiation on coal fly-ash geopolymer paste setting time. in Nuclear Technology and Radiation Protection. 2020;35(2):150-153.
doi:10.2298/NTRP2002150R .

Rubinjoni, Luka Z., Stanković, Srboljub, Lončar, Boris B., "The effect of 60Co gamma irradiation on coal fly-ash geopolymer paste setting time" in Nuclear Technology and Radiation Protection, 35, no. 2 (2020):150-153,
https://doi.org/10.2298/NTRP2002150R . .

TY  - JOUR
AU  - Dimović, Slavko
AU  - Nikezić, Dušan P.
AU  - Šljivić-Ivanović, Marija Z.
AU  - Jelić, Ivana V.
AU  - Stanić, Vojislav
AU  - Radenković, Mirjana
AU  - Lončar, Boris B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8660
AB  - The possibility of retaining Cs+ and Co2+ bound by immobilization processes in the cement matrix is defined as the subject of its investigation: the cement matrix formulation, the water/ cement ratio, the amount of waste, and the porosity of such a structure. Implementing the standard leaching method by Hespe the possibility of comparing different authors’ results was achieved. Diffusion and semi-empirical model were used to investigate the transport phenomenon in order to predict the leaching level for a long period of time. Leaching of Co2+ and Cs+ ions under dynamic conditions immobilized in the cement matrix dynamic conditions decreases with the increase of the sludge content, regarding porosity increase. The effects of the diffusion and surface washing are equalized, and the contribution ofthe matrix dissolution to the Cs + and Co2+ transport in the cement porous media increases, on average, for one order of magnitude. The semi-empirical model gives a better approximation for Co2+ and Cs+ leaching process for the duration ofthe experiment while both models significantly approximate leaching results in dynamic conditions. © 2019, Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Leaching kinetics of Cs+ and Co2+ under dynamic conditions
VL  - 34
IS  - 3
SP  - 243
EP  - 248
DO  - 10.2298/NTRP190506028D
ER  - 

@article{
author = "Dimović, Slavko and Nikezić, Dušan P. and Šljivić-Ivanović, Marija Z. and Jelić, Ivana V. and Stanić, Vojislav and Radenković, Mirjana and Lončar, Boris B.",
year = "2019",
abstract = "The possibility of retaining Cs+ and Co2+ bound by immobilization processes in the cement matrix is defined as the subject of its investigation: the cement matrix formulation, the water/ cement ratio, the amount of waste, and the porosity of such a structure. Implementing the standard leaching method by Hespe the possibility of comparing different authors’ results was achieved. Diffusion and semi-empirical model were used to investigate the transport phenomenon in order to predict the leaching level for a long period of time. Leaching of Co2+ and Cs+ ions under dynamic conditions immobilized in the cement matrix dynamic conditions decreases with the increase of the sludge content, regarding porosity increase. The effects of the diffusion and surface washing are equalized, and the contribution ofthe matrix dissolution to the Cs + and Co2+ transport in the cement porous media increases, on average, for one order of magnitude. The semi-empirical model gives a better approximation for Co2+ and Cs+ leaching process for the duration ofthe experiment while both models significantly approximate leaching results in dynamic conditions. © 2019, Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Leaching kinetics of Cs+ and Co2+ under dynamic conditions",
volume = "34",
number = "3",
pages = "243-248",
doi = "10.2298/NTRP190506028D"
}

Dimović, S., Nikezić, D. P., Šljivić-Ivanović, M. Z., Jelić, I. V., Stanić, V., Radenković, M.,& Lončar, B. B.. (2019). Leaching kinetics of Cs+ and Co2+ under dynamic conditions. in Nuclear Technology and Radiation Protection, 34(3), 243-248.
https://doi.org/10.2298/NTRP190506028D

Dimović S, Nikezić DP, Šljivić-Ivanović MZ, Jelić IV, Stanić V, Radenković M, Lončar BB. Leaching kinetics of Cs+ and Co2+ under dynamic conditions. in Nuclear Technology and Radiation Protection. 2019;34(3):243-248.
doi:10.2298/NTRP190506028D .

Dimović, Slavko, Nikezić, Dušan P., Šljivić-Ivanović, Marija Z., Jelić, Ivana V., Stanić, Vojislav, Radenković, Mirjana, Lončar, Boris B., "Leaching kinetics of Cs+ and Co2+ under dynamic conditions" in Nuclear Technology and Radiation Protection, 34, no. 3 (2019):243-248,
https://doi.org/10.2298/NTRP190506028D . .

TY  - CONF
AU  - Rubinjoni, Luka
AU  - Stanković, Srboljub
AU  - Karadžić, Katarina
AU  - Lončar, Boris
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12138
AB  - Operations involving grout, mortar and concrete are commonly used in radioactive waste management. Materials based on Portland cement (OPC) have numerous applications, ranging from construction of facilities, radioactive shielding, production of different casings and containers, to waste conditioning procedures (solidification, cementation, grouting). These materials are well known and well standardized, and regulated both internationally and at the national level. OPC is readily available, cost effective and comes in formulations suited for the construction industry. In nuclear and radioactive waste management industries, some challenges with the use of OPC based materials have been recognized (including the durability of concrete under thermal stress, long term stability of OPC binders, and radiolysis of contained water), and have been addressed either by optimizing OPC material formulations, or by using alternative binders. One promising alternative binder is geopolymer, a type of alkali activated binder, solidified by cross linking aluminosilicates into an amorphous matrix. Geopolymer is formed by activation of fine powder with pozzolanic properties with an alkali solution of sodium silicate (water glass). During geopolymerization, water acts primarily as a solvent, unlike the reactions during the setting of OPC, where hydration plays a key role. Various base materials, ranging from metakaolin to byproducts such as fly-ash and blast furnace slag, can be used. Coal fly-ash is an inexpensive raw material with low CO2 footprint (compared to OPC), with potential applications in radioactive waste conditioning. To our knowledge, the effect of ionizing radiation on geopolymer set time hasn’t been explored. We have measured the initial and final set time for fly-ash geopolymer paste, based on the SRPS EN 196-3 standard, irradiated by gamma rays in a Co-60 reference field on position with air kerma rate of 3.42 mGy/s. The binder paste was prepared using fly-ash from TENT B power plant’s electrostatic filters without further sieving, activated by water glass with module 1.5 and mixed with distilled water until satisfactory flow was obtained, and poured into sample and control molds. Initial and final set times for irradiated sample and non irradiated control were determined by Vicat apparatus. The irradiated sample demonstrated 11% shorter initial set time, and 16% shorter final set time, compared to control. These set times allow satisfactory working times for geopolymer grouts and mortars. The effect of ionizing radiation on set times and other properties of coal fly-ash based materials must be accounted for in all stages of application, from small scale testing and simulations, to full scale tests and production environments.
PB  - Niš : Sievert Association
C3  - RAP 2019 : International conference on radiation applications : Book of abstracts
T1  - The effect of Co-60 gamma irradiation on coal fly-ash geopolymer set times
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12138
ER  - 

@conference{
author = "Rubinjoni, Luka and Stanković, Srboljub and Karadžić, Katarina and Lončar, Boris",
year = "2019",
abstract = "Operations involving grout, mortar and concrete are commonly used in radioactive waste management. Materials based on Portland cement (OPC) have numerous applications, ranging from construction of facilities, radioactive shielding, production of different casings and containers, to waste conditioning procedures (solidification, cementation, grouting). These materials are well known and well standardized, and regulated both internationally and at the national level. OPC is readily available, cost effective and comes in formulations suited for the construction industry. In nuclear and radioactive waste management industries, some challenges with the use of OPC based materials have been recognized (including the durability of concrete under thermal stress, long term stability of OPC binders, and radiolysis of contained water), and have been addressed either by optimizing OPC material formulations, or by using alternative binders. One promising alternative binder is geopolymer, a type of alkali activated binder, solidified by cross linking aluminosilicates into an amorphous matrix. Geopolymer is formed by activation of fine powder with pozzolanic properties with an alkali solution of sodium silicate (water glass). During geopolymerization, water acts primarily as a solvent, unlike the reactions during the setting of OPC, where hydration plays a key role. Various base materials, ranging from metakaolin to byproducts such as fly-ash and blast furnace slag, can be used. Coal fly-ash is an inexpensive raw material with low CO2 footprint (compared to OPC), with potential applications in radioactive waste conditioning. To our knowledge, the effect of ionizing radiation on geopolymer set time hasn’t been explored. We have measured the initial and final set time for fly-ash geopolymer paste, based on the SRPS EN 196-3 standard, irradiated by gamma rays in a Co-60 reference field on position with air kerma rate of 3.42 mGy/s. The binder paste was prepared using fly-ash from TENT B power plant’s electrostatic filters without further sieving, activated by water glass with module 1.5 and mixed with distilled water until satisfactory flow was obtained, and poured into sample and control molds. Initial and final set times for irradiated sample and non irradiated control were determined by Vicat apparatus. The irradiated sample demonstrated 11% shorter initial set time, and 16% shorter final set time, compared to control. These set times allow satisfactory working times for geopolymer grouts and mortars. The effect of ionizing radiation on set times and other properties of coal fly-ash based materials must be accounted for in all stages of application, from small scale testing and simulations, to full scale tests and production environments.",
publisher = "Niš : Sievert Association",
journal = "RAP 2019 : International conference on radiation applications : Book of abstracts",
title = "The effect of Co-60 gamma irradiation on coal fly-ash geopolymer set times",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12138"
}

Rubinjoni, L., Stanković, S., Karadžić, K.,& Lončar, B.. (2019). The effect of Co-60 gamma irradiation on coal fly-ash geopolymer set times. in RAP 2019 : International conference on radiation applications : Book of abstracts
Niš : Sievert Association., 62-62.
https://hdl.handle.net/21.15107/rcub_vinar_12138

Rubinjoni L, Stanković S, Karadžić K, Lončar B. The effect of Co-60 gamma irradiation on coal fly-ash geopolymer set times. in RAP 2019 : International conference on radiation applications : Book of abstracts. 2019;:62-62.
https://hdl.handle.net/21.15107/rcub_vinar_12138 .

Rubinjoni, Luka, Stanković, Srboljub, Karadžić, Katarina, Lončar, Boris, "The effect of Co-60 gamma irradiation on coal fly-ash geopolymer set times" in RAP 2019 : International conference on radiation applications : Book of abstracts (2019):62-62,
https://hdl.handle.net/21.15107/rcub_vinar_12138 .

TY  - CONF
AU  - Stanković, Srboljub
AU  - Jakšić, Aleksandar
AU  - Lončar, Boris B.
AU  - Nikolić, Dragana
AU  - Radenković, Mirjana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11148
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
T1  - One numerical method for determining the absorbed dose of gamma and X radiation in the ZrO2 dielectric within the MOS capacitor
SP  - 197
EP  - 
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11148
ER  - 

@conference{
author = "Stanković, Srboljub and Jakšić, Aleksandar and Lončar, Boris B. and Nikolić, Dragana and Radenković, Mirjana",
year = "2019",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro",
title = "One numerical method for determining the absorbed dose of gamma and X radiation in the ZrO2 dielectric within the MOS capacitor",
pages = "197-",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11148"
}

Stanković, S., Jakšić, A., Lončar, B. B., Nikolić, D.,& Radenković, M.. (2019). One numerical method for determining the absorbed dose of gamma and X radiation in the ZrO2 dielectric within the MOS capacitor. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 197-.
https://hdl.handle.net/21.15107/rcub_vinar_11148

Stanković S, Jakšić A, Lončar BB, Nikolić D, Radenković M. One numerical method for determining the absorbed dose of gamma and X radiation in the ZrO2 dielectric within the MOS capacitor. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro. 2019;:197-.
https://hdl.handle.net/21.15107/rcub_vinar_11148 .

Stanković, Srboljub, Jakšić, Aleksandar, Lončar, Boris B., Nikolić, Dragana, Radenković, Mirjana, "One numerical method for determining the absorbed dose of gamma and X radiation in the ZrO2 dielectric within the MOS capacitor" in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : book of abstracts; June 10-14, 2019; Herceg Novi, Montenegro (2019):197-,
https://hdl.handle.net/21.15107/rcub_vinar_11148 .

TY  - CONF
AU  - Stanković, Srboljub
AU  - Lončar, Boris B.
AU  - Kržanović, Nikola
AU  - Živanović, Miloš Z.
AU  - Nišević, Gordan
PY  - 2019
UR  - https://plus.sr.cobiss.net/opac7/bib/279687436
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8714
AB  - U ovom radu je dat pregled izabranih metoda proračuna buildup faktora na osnovu empirijskih aproksimacija Bergera, Tejlora i aproksimacije Geometrijske Progresije, sa kojima mogu da se rešavaju praktični problemi u zaštiti od zračenja u zavisnosti od stepena njihove složenosti. Razmatran je bazičan slučaj za određivanje buildup faktora u zavisnosti od karakteristika homogene materijalne sredine kroz koju se obavlja transport fotona X i gama zračenja, zatim od energije fotona iz izvora zračenja, kao od rastojanja između izvora fotona i tačke u materijalnoj sredini u kojoj se određuje dozimetrijska veličina. Posle sprovedene diskusije rezultata proračuna buildup faktora za olovo, gvožđe, običan beton i vodu, u radu su izvedeni odgovarajući zaključci u vezi efikasnosti primene pojedinih metoda proračuna u homogenoj materijalnoj sredini, uzimajući u obzir da svaka od prikazanih metoda ima svoje prednosti, kao i ograničenja, u zavisnosti od fokusa njene primene.
AB  - This paper provides an overview of selected calculation method buildup factors based on empirical approximation that can not be solved practical problems in radiation protection, depending on their level of complexity. A basic case was considered for the determination of the buildup factor depending on the characteristics of the homogeneous material environment through which the transport of photons X and gamma radiation is carried out, then from the energy of photons from the radiation source, from the distance between the photon source and the point in the material environment in which the dosimetric size. After the discussion of the results of the calculation of the buildup factors for lead, iron, ordinary concrete and water, the conclusions about the efficiency of the application of individual calculation methods in a homogeneous material environment were carried out, taking into account that each of the methods presented has its advantages, as well as the limitations, depending on the focus of its application.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 30. симпозијум ДЗЗСЦГ : зборник радова
T1  - Izabrane metode proračuna buildup faktora u zaštiti od gama i X zračenja
T1  - Selected methods for buildup factor calculation in gamma and X radiation protection
SP  - 436
EP  - 440
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8714
ER  - 

@conference{
author = "Stanković, Srboljub and Lončar, Boris B. and Kržanović, Nikola and Živanović, Miloš Z. and Nišević, Gordan",
year = "2019",
abstract = "U ovom radu je dat pregled izabranih metoda proračuna buildup faktora na osnovu empirijskih aproksimacija Bergera, Tejlora i aproksimacije Geometrijske Progresije, sa kojima mogu da se rešavaju praktični problemi u zaštiti od zračenja u zavisnosti od stepena njihove složenosti. Razmatran je bazičan slučaj za određivanje buildup faktora u zavisnosti od karakteristika homogene materijalne sredine kroz koju se obavlja transport fotona X i gama zračenja, zatim od energije fotona iz izvora zračenja, kao od rastojanja između izvora fotona i tačke u materijalnoj sredini u kojoj se određuje dozimetrijska veličina. Posle sprovedene diskusije rezultata proračuna buildup faktora za olovo, gvožđe, običan beton i vodu, u radu su izvedeni odgovarajući zaključci u vezi efikasnosti primene pojedinih metoda proračuna u homogenoj materijalnoj sredini, uzimajući u obzir da svaka od prikazanih metoda ima svoje prednosti, kao i ograničenja, u zavisnosti od fokusa njene primene., This paper provides an overview of selected calculation method buildup factors based on empirical approximation that can not be solved practical problems in radiation protection, depending on their level of complexity. A basic case was considered for the determination of the buildup factor depending on the characteristics of the homogeneous material environment through which the transport of photons X and gamma radiation is carried out, then from the energy of photons from the radiation source, from the distance between the photon source and the point in the material environment in which the dosimetric size. After the discussion of the results of the calculation of the buildup factors for lead, iron, ordinary concrete and water, the conclusions about the efficiency of the application of individual calculation methods in a homogeneous material environment were carried out, taking into account that each of the methods presented has its advantages, as well as the limitations, depending on the focus of its application.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "30. симпозијум ДЗЗСЦГ : зборник радова",
title = "Izabrane metode proračuna buildup faktora u zaštiti od gama i X zračenja, Selected methods for buildup factor calculation in gamma and X radiation protection",
pages = "436-440",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8714"
}

Stanković, S., Lončar, B. B., Kržanović, N., Živanović, M. Z.,& Nišević, G.. (2019). Izabrane metode proračuna buildup faktora u zaštiti od gama i X zračenja. in 30. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 436-440.
https://hdl.handle.net/21.15107/rcub_vinar_8714

Stanković S, Lončar BB, Kržanović N, Živanović MZ, Nišević G. Izabrane metode proračuna buildup faktora u zaštiti od gama i X zračenja. in 30. симпозијум ДЗЗСЦГ : зборник радова. 2019;:436-440.
https://hdl.handle.net/21.15107/rcub_vinar_8714 .

Stanković, Srboljub, Lončar, Boris B., Kržanović, Nikola, Živanović, Miloš Z., Nišević, Gordan, "Izabrane metode proračuna buildup faktora u zaštiti od gama i X zračenja" in 30. симпозијум ДЗЗСЦГ : зборник радова (2019):436-440,
https://hdl.handle.net/21.15107/rcub_vinar_8714 .

TY  - JOUR
AU  - Kopanja, Lazar
AU  - Lončar, Boris B.
AU  - Žunić, Dragiša
AU  - Tadić, Marin
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8590
AB  - The goal of the nanoparticle synthesis is, first of all, the production of nanoparticles that will be more similar in size and shape. This is very important for the possibility of studying and applying nanomaterials because of their characteristics that are very sensitive to size and shape such as, for example, magnetic properties. In this paper, we propose the shape analysis of the nanoparticles using three shape descriptors – elongation, convexity and circularity. Experimental results were obtained by using TEM images of hematite nanoparticles that were, first of all, subjected to segmentation in order to obtain isolated nanoparticles, and then the values of elongation, convexity and circularity were measured. Convexity C x ( S ) is regarded as the ratio between shape’s area and area of the its convex hull. The convexity measure defines the degree to which a shape differs from a convex shape while the circularity measure defines the degree to which a shape differs from an ideal circle. The range of convexity and circularity values is (0, 1], while the range of elongation values is [1, ∞). The circle has lowest elongation (ε = 1), while it has biggest convexity and circularity values ( C x = 1; C = 1). The measures ε( S ), C x ( S ), C ( S ) proposed and used in the experiment have the few desirable properties and give intuitively expected results. None of the measures is good enough to describe all the shapes, and therefore it is suggested to use a variety of measures so that the shapes can be described better and then classify and control during the synthesis process.
T2  - Journal of Electrical Engineering
T1  - Nanoparticle shapes: Quantification by elongation, convexity and circularity measures
VL  - 70
IS  - 7
SP  - 44
EP  - 50
DO  - 10.2478/jee-2019-0040
ER  - 

@article{
author = "Kopanja, Lazar and Lončar, Boris B. and Žunić, Dragiša and Tadić, Marin",
year = "2019",
abstract = "The goal of the nanoparticle synthesis is, first of all, the production of nanoparticles that will be more similar in size and shape. This is very important for the possibility of studying and applying nanomaterials because of their characteristics that are very sensitive to size and shape such as, for example, magnetic properties. In this paper, we propose the shape analysis of the nanoparticles using three shape descriptors – elongation, convexity and circularity. Experimental results were obtained by using TEM images of hematite nanoparticles that were, first of all, subjected to segmentation in order to obtain isolated nanoparticles, and then the values of elongation, convexity and circularity were measured. Convexity C x ( S ) is regarded as the ratio between shape’s area and area of the its convex hull. The convexity measure defines the degree to which a shape differs from a convex shape while the circularity measure defines the degree to which a shape differs from an ideal circle. The range of convexity and circularity values is (0, 1], while the range of elongation values is [1, ∞). The circle has lowest elongation (ε = 1), while it has biggest convexity and circularity values ( C x = 1; C = 1). The measures ε( S ), C x ( S ), C ( S ) proposed and used in the experiment have the few desirable properties and give intuitively expected results. None of the measures is good enough to describe all the shapes, and therefore it is suggested to use a variety of measures so that the shapes can be described better and then classify and control during the synthesis process.",
journal = "Journal of Electrical Engineering",
title = "Nanoparticle shapes: Quantification by elongation, convexity and circularity measures",
volume = "70",
number = "7",
pages = "44-50",
doi = "10.2478/jee-2019-0040"
}

Kopanja, L., Lončar, B. B., Žunić, D.,& Tadić, M.. (2019). Nanoparticle shapes: Quantification by elongation, convexity and circularity measures. in Journal of Electrical Engineering, 70(7), 44-50.
https://doi.org/10.2478/jee-2019-0040

Kopanja L, Lončar BB, Žunić D, Tadić M. Nanoparticle shapes: Quantification by elongation, convexity and circularity measures. in Journal of Electrical Engineering. 2019;70(7):44-50.
doi:10.2478/jee-2019-0040 .

Kopanja, Lazar, Lončar, Boris B., Žunić, Dragiša, Tadić, Marin, "Nanoparticle shapes: Quantification by elongation, convexity and circularity measures" in Journal of Electrical Engineering, 70, no. 7 (2019):44-50,
https://doi.org/10.2478/jee-2019-0040 . .

TY  - CONF
AU  - Avramović, Dragan
AU  - Čeliković, Igor T.
AU  - Ujić, Predrag
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Jevremović, Aleksandar M.
AU  - Antonijević, Dunja
AU  - Lončar, Boris B.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8459
AB  - It is well-known that radon is the second important human carcinogen for lung cancer, after smoking. The major sources of indoor radon concentrations are soil and building material. Under certain conditions, a dose received from the inhalation of radon and its progenies can be higher than a dose received from the external exposure due to radium concentration in building materials. In this contribution, the results of the radon and thoron exhalation rate measurement from 9 commonly used building materials are reported. Exhalation rate measurements were performed with accumulation chamber method using active device for measurement of radon concentration. © 2019 RAD Association. All rights reserved.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2018 : 6th International Conference on Radiation in Various Fields of Research : book of abstracts; June 18-22, 2018; Ohrid, Macedonia
T1  - Radon exhalation rate of some building materials common in Serbia
VL  - 3
SP  - 119
EP  - 122
DO  - 10.21175/RadProc.2018.26
ER  - 

@conference{
author = "Avramović, Dragan and Čeliković, Igor T. and Ujić, Predrag and Vukanac, Ivana and Kandić, Aleksandar and Jevremović, Aleksandar M. and Antonijević, Dunja and Lončar, Boris B.",
year = "2018",
abstract = "It is well-known that radon is the second important human carcinogen for lung cancer, after smoking. The major sources of indoor radon concentrations are soil and building material. Under certain conditions, a dose received from the inhalation of radon and its progenies can be higher than a dose received from the external exposure due to radium concentration in building materials. In this contribution, the results of the radon and thoron exhalation rate measurement from 9 commonly used building materials are reported. Exhalation rate measurements were performed with accumulation chamber method using active device for measurement of radon concentration. © 2019 RAD Association. All rights reserved.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2018 : 6th International Conference on Radiation in Various Fields of Research : book of abstracts; June 18-22, 2018; Ohrid, Macedonia",
title = "Radon exhalation rate of some building materials common in Serbia",
volume = "3",
pages = "119-122",
doi = "10.21175/RadProc.2018.26"
}

Avramović, D., Čeliković, I. T., Ujić, P., Vukanac, I., Kandić, A., Jevremović, A. M., Antonijević, D.,& Lončar, B. B.. (2018). Radon exhalation rate of some building materials common in Serbia. in RAD 2018 : 6th International Conference on Radiation in Various Fields of Research : book of abstracts; June 18-22, 2018; Ohrid, Macedonia
RAD Centre, Niš, Serbia., 3, 119-122.
https://doi.org/10.21175/RadProc.2018.26

Avramović D, Čeliković IT, Ujić P, Vukanac I, Kandić A, Jevremović AM, Antonijević D, Lončar BB. Radon exhalation rate of some building materials common in Serbia. in RAD 2018 : 6th International Conference on Radiation in Various Fields of Research : book of abstracts; June 18-22, 2018; Ohrid, Macedonia. 2018;3:119-122.
doi:10.21175/RadProc.2018.26 .

Avramović, Dragan, Čeliković, Igor T., Ujić, Predrag, Vukanac, Ivana, Kandić, Aleksandar, Jevremović, Aleksandar M., Antonijević, Dunja, Lončar, Boris B., "Radon exhalation rate of some building materials common in Serbia" in RAD 2018 : 6th International Conference on Radiation in Various Fields of Research : book of abstracts; June 18-22, 2018; Ohrid, Macedonia, 3 (2018):119-122,
https://doi.org/10.21175/RadProc.2018.26 . .

TY  - JOUR
AU  - Awhida, Ahmed
AU  - Ujić, Predrag
AU  - Pantelić, Gordana K.
AU  - Kolarž, Predrag M.
AU  - Čeliković, Igor T.
AU  - Živanović, Miloš Z.
AU  - Janićijević, Aco
AU  - Lončar, Boris B.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7588
AB  - It is indicated that the exposure to radon originating from the building materials is not negligible and the radon exhalation measurement should get more attention in the future. The experience with four different methods of the exhalation measurement, established in our laboratory for the purpose of the intercomparison is reported. Additionally, a comparison of advantages and disadvantages of used methods is discussed.
T2  - Radiation Protection Dosimetry
T1  - Ad-hoc intercomparison of four different radon exhalation measurement methods
VL  - 178
SP  - 138
EP  - 142
DO  - 10.1093/rpd/ncx096
ER  - 

@article{
author = "Awhida, Ahmed and Ujić, Predrag and Pantelić, Gordana K. and Kolarž, Predrag M. and Čeliković, Igor T. and Živanović, Miloš Z. and Janićijević, Aco and Lončar, Boris B.",
year = "2018",
abstract = "It is indicated that the exposure to radon originating from the building materials is not negligible and the radon exhalation measurement should get more attention in the future. The experience with four different methods of the exhalation measurement, established in our laboratory for the purpose of the intercomparison is reported. Additionally, a comparison of advantages and disadvantages of used methods is discussed.",
journal = "Radiation Protection Dosimetry",
title = "Ad-hoc intercomparison of four different radon exhalation measurement methods",
volume = "178",
pages = "138-142",
doi = "10.1093/rpd/ncx096"
}

Awhida, A., Ujić, P., Pantelić, G. K., Kolarž, P. M., Čeliković, I. T., Živanović, M. Z., Janićijević, A.,& Lončar, B. B.. (2018). Ad-hoc intercomparison of four different radon exhalation measurement methods. in Radiation Protection Dosimetry, 178, 138-142.
https://doi.org/10.1093/rpd/ncx096

Awhida A, Ujić P, Pantelić GK, Kolarž PM, Čeliković IT, Živanović MZ, Janićijević A, Lončar BB. Ad-hoc intercomparison of four different radon exhalation measurement methods. in Radiation Protection Dosimetry. 2018;178:138-142.
doi:10.1093/rpd/ncx096 .

Awhida, Ahmed, Ujić, Predrag, Pantelić, Gordana K., Kolarž, Predrag M., Čeliković, Igor T., Živanović, Miloš Z., Janićijević, Aco, Lončar, Boris B., "Ad-hoc intercomparison of four different radon exhalation measurement methods" in Radiation Protection Dosimetry, 178 (2018):138-142,
https://doi.org/10.1093/rpd/ncx096 . .

TY  - JOUR
AU  - Nikezić, Dušan P.
AU  - Gršić, Zoran J.
AU  - Dramlić, Dragan M.
AU  - Dramlić, Stefan D.
AU  - Lončar, Boris B.
AU  - Dimović, Slavko
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1450
AB  - The aim of the study was to estimate if dust/fly ash emitted into the atmosphere from chimneys and the ash disposal sites of the thermal power plants Nikola Tesla A and B in Obrenovac could increase the concentration of PM10 in New Belgrade. TNTA and TNTB are close to Belgrade (population of 2.5 million) and it is important to estimate the amount of the pollution emitted into the atmosphere from these sources. The pollution from chimneys is estimated from yearly amounts of discharge, while the lifting of ash/coal dust was parameterized by the model. The used model is the straight-line Gaussian plume model written in the Fortran programming language. The first estimation was done using mathematical modeling for the idealized situation with prescribed winds and stability. The second estimation was done using the observed meteorological data for the whole year of 2009. With strong winds (over 40 km/h), dust will reach Belgrade in dozens of minutes, while during moderate winds (similar to 10-30 km/h), it would take about one hour to reach it. In these cases atmosphere is close to the neutral stability class. In case of weaker winds and stable atmosphere, the increase of air dust concentration in Belgrade would start after a few hours (6-10). Regarding the other two sources of pollution, coal handling piles and ash deposit sites, during strong winds ( GT 40 km/h) and neutral stability, fly ash would reach Belgrade in several dozen of minutes. (C) 2016 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.
T2  - Process Safety and Environmental Protection
T1  - Modeling air concentration of fly ash in Belgrade, emitted from thermal power plants TNTA and TNTB
VL  - 106
SP  - 274
EP  - 283
DO  - 10.1016/j.psep.2016.06.009
ER  - 

@article{
author = "Nikezić, Dušan P. and Gršić, Zoran J. and Dramlić, Dragan M. and Dramlić, Stefan D. and Lončar, Boris B. and Dimović, Slavko",
year = "2017",
abstract = "The aim of the study was to estimate if dust/fly ash emitted into the atmosphere from chimneys and the ash disposal sites of the thermal power plants Nikola Tesla A and B in Obrenovac could increase the concentration of PM10 in New Belgrade. TNTA and TNTB are close to Belgrade (population of 2.5 million) and it is important to estimate the amount of the pollution emitted into the atmosphere from these sources. The pollution from chimneys is estimated from yearly amounts of discharge, while the lifting of ash/coal dust was parameterized by the model. The used model is the straight-line Gaussian plume model written in the Fortran programming language. The first estimation was done using mathematical modeling for the idealized situation with prescribed winds and stability. The second estimation was done using the observed meteorological data for the whole year of 2009. With strong winds (over 40 km/h), dust will reach Belgrade in dozens of minutes, while during moderate winds (similar to 10-30 km/h), it would take about one hour to reach it. In these cases atmosphere is close to the neutral stability class. In case of weaker winds and stable atmosphere, the increase of air dust concentration in Belgrade would start after a few hours (6-10). Regarding the other two sources of pollution, coal handling piles and ash deposit sites, during strong winds ( GT 40 km/h) and neutral stability, fly ash would reach Belgrade in several dozen of minutes. (C) 2016 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.",
journal = "Process Safety and Environmental Protection",
title = "Modeling air concentration of fly ash in Belgrade, emitted from thermal power plants TNTA and TNTB",
volume = "106",
pages = "274-283",
doi = "10.1016/j.psep.2016.06.009"
}

Nikezić, D. P., Gršić, Z. J., Dramlić, D. M., Dramlić, S. D., Lončar, B. B.,& Dimović, S.. (2017). Modeling air concentration of fly ash in Belgrade, emitted from thermal power plants TNTA and TNTB. in Process Safety and Environmental Protection, 106, 274-283.
https://doi.org/10.1016/j.psep.2016.06.009

Nikezić DP, Gršić ZJ, Dramlić DM, Dramlić SD, Lončar BB, Dimović S. Modeling air concentration of fly ash in Belgrade, emitted from thermal power plants TNTA and TNTB. in Process Safety and Environmental Protection. 2017;106:274-283.
doi:10.1016/j.psep.2016.06.009 .

Nikezić, Dušan P., Gršić, Zoran J., Dramlić, Dragan M., Dramlić, Stefan D., Lončar, Boris B., Dimović, Slavko, "Modeling air concentration of fly ash in Belgrade, emitted from thermal power plants TNTA and TNTB" in Process Safety and Environmental Protection, 106 (2017):274-283,
https://doi.org/10.1016/j.psep.2016.06.009 . .

TY  - JOUR
AU  - Šljivić-Ivanović, Marija Z.
AU  - Jelić, Ivana V.
AU  - Loncar, Aleksandra M.
AU  - Nikezić, Dušan P.
AU  - Dimović, Slavko
AU  - Lončar, Boris B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1841
AB  - The sorption properties of waste facade, brick, and asphalt sample towards Sr(II), Co(II), and Ni(II) ions from single and multicomponent solutions were investigated. The highest sorption capacity was found for Ni(II) ions, while the most effective sorbent was facade. Simplex Centroid Mixture Design was used in order to investigate the sorption processes of ions from solutions with different composition as well as the competition between the cations. Based on the statistical analysis results, the equations for data modeling were proposed. According to the observations, the investigated solid matrices can be effectively used for the liquid radioactive waste treatment. Furthermore, the applied methodology turned out to be an easy and operational way for the investigations of multicomponent sorption processes.
T2  - Nuclear technology and radiation protection
T1  - The Application of Experimental Design Methodology for the Investigation of Liquid Radioactive Waste Treatment
VL  - 32
IS  - 3
SP  - 281
EP  - 287
DO  - 10.2298/NTRP1703281S
ER  - 

@article{
author = "Šljivić-Ivanović, Marija Z. and Jelić, Ivana V. and Loncar, Aleksandra M. and Nikezić, Dušan P. and Dimović, Slavko and Lončar, Boris B.",
year = "2017",
abstract = "The sorption properties of waste facade, brick, and asphalt sample towards Sr(II), Co(II), and Ni(II) ions from single and multicomponent solutions were investigated. The highest sorption capacity was found for Ni(II) ions, while the most effective sorbent was facade. Simplex Centroid Mixture Design was used in order to investigate the sorption processes of ions from solutions with different composition as well as the competition between the cations. Based on the statistical analysis results, the equations for data modeling were proposed. According to the observations, the investigated solid matrices can be effectively used for the liquid radioactive waste treatment. Furthermore, the applied methodology turned out to be an easy and operational way for the investigations of multicomponent sorption processes.",
journal = "Nuclear technology and radiation protection",
title = "The Application of Experimental Design Methodology for the Investigation of Liquid Radioactive Waste Treatment",
volume = "32",
number = "3",
pages = "281-287",
doi = "10.2298/NTRP1703281S"
}

Šljivić-Ivanović, M. Z., Jelić, I. V., Loncar, A. M., Nikezić, D. P., Dimović, S.,& Lončar, B. B.. (2017). The Application of Experimental Design Methodology for the Investigation of Liquid Radioactive Waste Treatment. in Nuclear technology and radiation protection, 32(3), 281-287.
https://doi.org/10.2298/NTRP1703281S

Šljivić-Ivanović MZ, Jelić IV, Loncar AM, Nikezić DP, Dimović S, Lončar BB. The Application of Experimental Design Methodology for the Investigation of Liquid Radioactive Waste Treatment. in Nuclear technology and radiation protection. 2017;32(3):281-287.
doi:10.2298/NTRP1703281S .

Šljivić-Ivanović, Marija Z., Jelić, Ivana V., Loncar, Aleksandra M., Nikezić, Dušan P., Dimović, Slavko, Lončar, Boris B., "The Application of Experimental Design Methodology for the Investigation of Liquid Radioactive Waste Treatment" in Nuclear technology and radiation protection, 32, no. 3 (2017):281-287,
https://doi.org/10.2298/NTRP1703281S . .

TY  - CONF
AU  - Đurašević, Mirjana M.
AU  - Kandić, Aleksandar
AU  - Milinčić, Miroljub
AU  - Vukanac, Ivana
AU  - Jevremović, Aleksandar M.
AU  - Milošević, Zoran
AU  - Lončar, Boris B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8315
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Gamaspektrometrija je jedna od najčešće korišćenih metoda za kvalitativno i
kvantitativno određivanje sadržaja radionuklida u zemljištu i drugim uzorcima iz
životne sredine. Meren je 31 uzorak zemljišta sa teritorije opštine Aleksandrovac, pri
čemu su za svaki uzorak korišćene dve različite geometrije (cilindrična kutijica i
marineli posuda). Određene su specifične aktivnosti radioizotopa uranovog i torijumovog niza, kao i 235U, 40K i 137Cs. Uzorci zemlje u geometriji cilindrične kutijice mereni
sa na dva HPGe detektora različitih efikasnosti i karakteristika, dok su uzorci u
marineli posudi mereni samo na jednom HPGe detektoru. U radu su prikazani rezultati
poređenja specifičnih aktivnosti istih radionuklida dobijenih merenjem uzoraka u
različitim geometrijama na istom HPGe detektoru kao i uzoraka u geometriji
cilindrične kutijice merenih na različitim detektorima. Analizirani su uzroci nastalih
varijacija.
AB  - Gamma ray spectrometry is an analytical method that allows the identification and
quantification of gamma emitting radioisotopes in soil and other environmental
samples. 31 samples of soil were collected from different location in the territory of
Aleksandrovac municipality. All soil samples were dried, milled and sealed in two
different geometries (500 ml Marinelli beaker and 125 ml cylindrical boxes) and stored
for six weeks in order to reach radioactive equilibrium between 226Ra and its
descendants. All samples stored in cylindrical boxes were measured by means of two
coaxial semiconductor HPGe detectors with different characteristics, while samples
stored in Marinelli beakers were measured only by means of one coaxial semiconductor
HPGe detector. The activity concentrations of radionuclides 40K, 137Cs, 235U, 226Ra, 238U
and 228Ac in all soil samples were determined. Variations in specific activities
determination for different geometries measured using one of the detectors, as well as
for cylindrical box geometry measured using both detectors, are presented in this
paper. The causes of these variations are analyzed.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Varijacije pri određivanju specifičnih aktivnosti u uzorcima zemljišta za različite geometrije i HPGe detektore
T1  - Variations in specific activities determination in soil samples for different geometries and HPGe detectors
SP  - 462
EP  - 466
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8315
ER  - 

@conference{
author = "Đurašević, Mirjana M. and Kandić, Aleksandar and Milinčić, Miroljub and Vukanac, Ivana and Jevremović, Aleksandar M. and Milošević, Zoran and Lončar, Boris B.",
year = "2017",
abstract = "Gamaspektrometrija je jedna od najčešće korišćenih metoda za kvalitativno i
kvantitativno određivanje sadržaja radionuklida u zemljištu i drugim uzorcima iz
životne sredine. Meren je 31 uzorak zemljišta sa teritorije opštine Aleksandrovac, pri
čemu su za svaki uzorak korišćene dve različite geometrije (cilindrična kutijica i
marineli posuda). Određene su specifične aktivnosti radioizotopa uranovog i torijumovog niza, kao i 235U, 40K i 137Cs. Uzorci zemlje u geometriji cilindrične kutijice mereni
sa na dva HPGe detektora različitih efikasnosti i karakteristika, dok su uzorci u
marineli posudi mereni samo na jednom HPGe detektoru. U radu su prikazani rezultati
poređenja specifičnih aktivnosti istih radionuklida dobijenih merenjem uzoraka u
različitim geometrijama na istom HPGe detektoru kao i uzoraka u geometriji
cilindrične kutijice merenih na različitim detektorima. Analizirani su uzroci nastalih
varijacija., Gamma ray spectrometry is an analytical method that allows the identification and
quantification of gamma emitting radioisotopes in soil and other environmental
samples. 31 samples of soil were collected from different location in the territory of
Aleksandrovac municipality. All soil samples were dried, milled and sealed in two
different geometries (500 ml Marinelli beaker and 125 ml cylindrical boxes) and stored
for six weeks in order to reach radioactive equilibrium between 226Ra and its
descendants. All samples stored in cylindrical boxes were measured by means of two
coaxial semiconductor HPGe detectors with different characteristics, while samples
stored in Marinelli beakers were measured only by means of one coaxial semiconductor
HPGe detector. The activity concentrations of radionuclides 40K, 137Cs, 235U, 226Ra, 238U
and 228Ac in all soil samples were determined. Variations in specific activities
determination for different geometries measured using one of the detectors, as well as
for cylindrical box geometry measured using both detectors, are presented in this
paper. The causes of these variations are analyzed.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Varijacije pri određivanju specifičnih aktivnosti u uzorcima zemljišta za različite geometrije i HPGe detektore, Variations in specific activities determination in soil samples for different geometries and HPGe detectors",
pages = "462-466",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8315"
}

Đurašević, M. M., Kandić, A., Milinčić, M., Vukanac, I., Jevremović, A. M., Milošević, Z.,& Lončar, B. B.. (2017). Varijacije pri određivanju specifičnih aktivnosti u uzorcima zemljišta za različite geometrije i HPGe detektore. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 462-466.
https://hdl.handle.net/21.15107/rcub_vinar_8315

Đurašević MM, Kandić A, Milinčić M, Vukanac I, Jevremović AM, Milošević Z, Lončar BB. Varijacije pri određivanju specifičnih aktivnosti u uzorcima zemljišta za različite geometrije i HPGe detektore. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:462-466.
https://hdl.handle.net/21.15107/rcub_vinar_8315 .

Đurašević, Mirjana M., Kandić, Aleksandar, Milinčić, Miroljub, Vukanac, Ivana, Jevremović, Aleksandar M., Milošević, Zoran, Lončar, Boris B., "Varijacije pri određivanju specifičnih aktivnosti u uzorcima zemljišta za različite geometrije i HPGe detektore" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):462-466,
https://hdl.handle.net/21.15107/rcub_vinar_8315 .

TY  - CONF
AU  - Ujić, Predrag
AU  - Čeliković, Igor T.
AU  - Awhida, Ahmed
AU  - Lončar, Boris B.
AU  - Pantelić, Gordana K.
AU  - Vukanac, Ivana
AU  - Kolarž, Predrag M.
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana M.
AU  - Živanović, Miloš Z.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8277
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Prikazan je pregled najnovijeg gama metoda za merenje ekshalacije radona iz
građevinskih materijala, koji pored ekshalacije omogućava merenje faktora emanacije i
merenje difuzione dužine radona u datom materijalu, što nije moguće u standardnim
merenjima ekshalacije radona. Takođe su prikazana i još tri standardna metoda
merenja ekshalacije radona i dato je uporedno objašnjene prednosti i mana ovih
metoda. Biće dat i pregled dosadašnjih merenja u Srbiji.
AB  - A review of a new radon exhalation measurement method is presented. This method
provides also a measurement of the radon diffusion length and the radon emanation
coefficient, which is not possible by standard radon exhalation measurement methods.
Besides, three standard radon exhalation measurements are presented: closed chamber
with an active instrument, closed chamber with a solid state nuclear track detector and
a charcoal canister method. An intercomparison of advantages and disadvantages is
also given. A short review of previous measurements of radon exhalation from
comercial building materials in Serbia will be given in the presentation.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Merenje ekshalacije radona iz građevinskih materijala
T1  - Measurement of radon exhalation from building materials
VL  - 224
SP  - 219
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8277
ER  - 

@conference{
author = "Ujić, Predrag and Čeliković, Igor T. and Awhida, Ahmed and Lončar, Boris B. and Pantelić, Gordana K. and Vukanac, Ivana and Kolarž, Predrag M. and Kandić, Aleksandar and Đurašević, Mirjana M. and Živanović, Miloš Z.",
year = "2017",
abstract = "Prikazan je pregled najnovijeg gama metoda za merenje ekshalacije radona iz
građevinskih materijala, koji pored ekshalacije omogućava merenje faktora emanacije i
merenje difuzione dužine radona u datom materijalu, što nije moguće u standardnim
merenjima ekshalacije radona. Takođe su prikazana i još tri standardna metoda
merenja ekshalacije radona i dato je uporedno objašnjene prednosti i mana ovih
metoda. Biće dat i pregled dosadašnjih merenja u Srbiji., A review of a new radon exhalation measurement method is presented. This method
provides also a measurement of the radon diffusion length and the radon emanation
coefficient, which is not possible by standard radon exhalation measurement methods.
Besides, three standard radon exhalation measurements are presented: closed chamber
with an active instrument, closed chamber with a solid state nuclear track detector and
a charcoal canister method. An intercomparison of advantages and disadvantages is
also given. A short review of previous measurements of radon exhalation from
comercial building materials in Serbia will be given in the presentation.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Merenje ekshalacije radona iz građevinskih materijala, Measurement of radon exhalation from building materials",
volume = "224",
pages = "219",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8277"
}

Ujić, P., Čeliković, I. T., Awhida, A., Lončar, B. B., Pantelić, G. K., Vukanac, I., Kolarž, P. M., Kandić, A., Đurašević, M. M.,& Živanović, M. Z.. (2017). Merenje ekshalacije radona iz građevinskih materijala. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 224, 219.
https://hdl.handle.net/21.15107/rcub_vinar_8277

Ujić P, Čeliković IT, Awhida A, Lončar BB, Pantelić GK, Vukanac I, Kolarž PM, Kandić A, Đurašević MM, Živanović MZ. Merenje ekshalacije radona iz građevinskih materijala. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;224:219.
https://hdl.handle.net/21.15107/rcub_vinar_8277 .

Ujić, Predrag, Čeliković, Igor T., Awhida, Ahmed, Lončar, Boris B., Pantelić, Gordana K., Vukanac, Ivana, Kolarž, Predrag M., Kandić, Aleksandar, Đurašević, Mirjana M., Živanović, Miloš Z., "Merenje ekshalacije radona iz građevinskih materijala" in 29. симпозијум ДЗЗСЦГ : зборник радова, 224 (2017):219,
https://hdl.handle.net/21.15107/rcub_vinar_8277 .

TY  - CONF
AU  - Čeliković, Igor T.
AU  - Đurašević, Mirjana M.
AU  - Ujić, Predrag
AU  - Repić, Predrag
AU  - Kandić, Aleksandar
AU  - Lončar, Boris B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8278
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - U radu je merena ekshalacija radona iz bigra iz Niške Banje poznatom po povišenoj
koncentraciji 226Ra. Bigar zbog svoje velike poroznosti i visoke koncentracije radijuma
je idealan materijal za testiranje parametara od kojih zavisi brzina ekshalacije. U radu
je razmatrana zavisnost ekshalacije u odnosu na vlažnost kao i na sprašenost uzorka.
Brzina ekshalacije je merena metodom zatvorene komore, a sama koncentracija radona
aktivnim uređajem. Dobijeni rezultati ukazuju da brzina ekshalacije raste sa povećanjem vlažnosti uzorka i smanjenjem veličine zrna.
AB  - In this contribution, radon exhalation rate from travertine originating from Niška
Banja, Serbia was measured. This particular travertine, with a high 226Ra concentration
and high porosity, is ideal for testing various parameters that can influence radon
exhalation rate. The radon exhalation rate was investigated for different sizes of grains.
Grain sizes were dived into 4 groups: 1) 2.1 - 1.6 mm, 2.) 1.6 - 1.2 mm, 3.) 1.2 - 0.7 mm
i 4.) < 0.7 mm. Influence of the humidity on radon exhalation rate was also
investigated. Samples with the smallest grain size were exposed to 3 different levels of
humidity (dry sample, and two samples in which water content was around 10% and
20% of the mass of dry sample. An accumulation chamber method with an active device
RTM1688-2 was used to estimate radon exhalation rate from continuous measurement
of radon in the chamber. Obtained results indicate that radon exhalation rate is
increasing with an increase of humidity of the sample and with an decrease of grain
size.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka
T1  - Investigation of the radon exhalation rate: an influence of humidity and a grain size
SP  - 225
EP  - 231
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8278
ER  - 

@conference{
author = "Čeliković, Igor T. and Đurašević, Mirjana M. and Ujić, Predrag and Repić, Predrag and Kandić, Aleksandar and Lončar, Boris B.",
year = "2017",
abstract = "U radu je merena ekshalacija radona iz bigra iz Niške Banje poznatom po povišenoj
koncentraciji 226Ra. Bigar zbog svoje velike poroznosti i visoke koncentracije radijuma
je idealan materijal za testiranje parametara od kojih zavisi brzina ekshalacije. U radu
je razmatrana zavisnost ekshalacije u odnosu na vlažnost kao i na sprašenost uzorka.
Brzina ekshalacije je merena metodom zatvorene komore, a sama koncentracija radona
aktivnim uređajem. Dobijeni rezultati ukazuju da brzina ekshalacije raste sa povećanjem vlažnosti uzorka i smanjenjem veličine zrna., In this contribution, radon exhalation rate from travertine originating from Niška
Banja, Serbia was measured. This particular travertine, with a high 226Ra concentration
and high porosity, is ideal for testing various parameters that can influence radon
exhalation rate. The radon exhalation rate was investigated for different sizes of grains.
Grain sizes were dived into 4 groups: 1) 2.1 - 1.6 mm, 2.) 1.6 - 1.2 mm, 3.) 1.2 - 0.7 mm
i 4.) < 0.7 mm. Influence of the humidity on radon exhalation rate was also
investigated. Samples with the smallest grain size were exposed to 3 different levels of
humidity (dry sample, and two samples in which water content was around 10% and
20% of the mass of dry sample. An accumulation chamber method with an active device
RTM1688-2 was used to estimate radon exhalation rate from continuous measurement
of radon in the chamber. Obtained results indicate that radon exhalation rate is
increasing with an increase of humidity of the sample and with an decrease of grain
size.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka, Investigation of the radon exhalation rate: an influence of humidity and a grain size",
pages = "225-231",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8278"
}

Čeliković, I. T., Đurašević, M. M., Ujić, P., Repić, P., Kandić, A.,& Lončar, B. B.. (2017). Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 225-231.
https://hdl.handle.net/21.15107/rcub_vinar_8278

Čeliković IT, Đurašević MM, Ujić P, Repić P, Kandić A, Lončar BB. Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:225-231.
https://hdl.handle.net/21.15107/rcub_vinar_8278 .

Čeliković, Igor T., Đurašević, Mirjana M., Ujić, Predrag, Repić, Predrag, Kandić, Aleksandar, Lončar, Boris B., "Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):225-231,
https://hdl.handle.net/21.15107/rcub_vinar_8278 .

TY  - CONF
AU  - Stanković, Srboljub
AU  - Jakšić, Aleksandar
AU  - Vasović, Nikola
AU  - Lončar, Boris B.
AU  - Kržanović, Nikola
AU  - Živanović, Miloš Z.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8332
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - U ovom radu su sprovedena eksperimentalna istraživanja odziva ESAPMOS4 RADFET
komponenti u polju gama zračenja 60Co kada su inkorporirane u dva različita merna
sistema, u statičkom i dinamičkom on-line mernom sistemu. Značaj istraživanja se
ogleda u uspostavljanju metoda kojim se ostvaruje eksperimentalna karakterizacija
RADFET strukture u poljima jonizujućeg zračenja s obzirom da se koristi on-line merna
tehnika određivanja zavisnosti napona praga RADFET od promene apsorbovane doze
zračenja u dinamičkom režimu rada digitalnog mernog sistema. To znači da se
kontinualno sprovodi registrovanje vrednosti električne veličine kojom se prati odziv
MOSFET-a u tačno zadatim vremenskim intervalima dok traje ozračivanje komponente,
što ranije nije bio slučaj u statičkom režimu merenja promene napona praga. Razlika
između izmerenih odziva za dva različita sistema merenja je bila u granicama
eksperimentalne merne nesigurnosti od 2% do 5% .
AB  - In this paper, experimental responses to ESAPMOS4 RADFET components in the field
of gamma radiation 60Co were performed when incorporated into two different
measurement systems, in a static and dynamic on-line measurement systems. The
significance of the research is reflected in the establishment of methods for achieving
the experimental characterization of the RADFET structure in ionizing radiation fields
since the use of an on-line measuring technique for determining the dependence of the
RADFET threshold voltage on changing the absorbed dose of radiation in the dynamic
regime of the digital measuring system is used. This means that continuously the
registration of an electrical quantity value to monitor the response of the MOSFET at
precisely defined time intervals while the component is irradiated, which was not the
case before in the static measurement mode of change the threshold voltage. The
difference between the measured responses for two different measurement systems was
within the experimental measurement uncertainty of 2% to 5%.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Razlika između odziva RADFET u statičkom i dinamičkom on-line mernom sistemu prilikom izlaganja gama zračenju Co60
T1  - Difference between RADFET response in static and dynamic on-line measurement systems during exposed to gamma radiation of Co60
SP  - 579
EP  - 586
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8332
ER  - 

@conference{
author = "Stanković, Srboljub and Jakšić, Aleksandar and Vasović, Nikola and Lončar, Boris B. and Kržanović, Nikola and Živanović, Miloš Z.",
year = "2017",
abstract = "U ovom radu su sprovedena eksperimentalna istraživanja odziva ESAPMOS4 RADFET
komponenti u polju gama zračenja 60Co kada su inkorporirane u dva različita merna
sistema, u statičkom i dinamičkom on-line mernom sistemu. Značaj istraživanja se
ogleda u uspostavljanju metoda kojim se ostvaruje eksperimentalna karakterizacija
RADFET strukture u poljima jonizujućeg zračenja s obzirom da se koristi on-line merna
tehnika određivanja zavisnosti napona praga RADFET od promene apsorbovane doze
zračenja u dinamičkom režimu rada digitalnog mernog sistema. To znači da se
kontinualno sprovodi registrovanje vrednosti električne veličine kojom se prati odziv
MOSFET-a u tačno zadatim vremenskim intervalima dok traje ozračivanje komponente,
što ranije nije bio slučaj u statičkom režimu merenja promene napona praga. Razlika
između izmerenih odziva za dva različita sistema merenja je bila u granicama
eksperimentalne merne nesigurnosti od 2% do 5% ., In this paper, experimental responses to ESAPMOS4 RADFET components in the field
of gamma radiation 60Co were performed when incorporated into two different
measurement systems, in a static and dynamic on-line measurement systems. The
significance of the research is reflected in the establishment of methods for achieving
the experimental characterization of the RADFET structure in ionizing radiation fields
since the use of an on-line measuring technique for determining the dependence of the
RADFET threshold voltage on changing the absorbed dose of radiation in the dynamic
regime of the digital measuring system is used. This means that continuously the
registration of an electrical quantity value to monitor the response of the MOSFET at
precisely defined time intervals while the component is irradiated, which was not the
case before in the static measurement mode of change the threshold voltage. The
difference between the measured responses for two different measurement systems was
within the experimental measurement uncertainty of 2% to 5%.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Razlika između odziva RADFET u statičkom i dinamičkom on-line mernom sistemu prilikom izlaganja gama zračenju Co60, Difference between RADFET response in static and dynamic on-line measurement systems during exposed to gamma radiation of Co60",
pages = "579-586",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8332"
}

Stanković, S., Jakšić, A., Vasović, N., Lončar, B. B., Kržanović, N.,& Živanović, M. Z.. (2017). Razlika između odziva RADFET u statičkom i dinamičkom on-line mernom sistemu prilikom izlaganja gama zračenju Co60. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 579-586.
https://hdl.handle.net/21.15107/rcub_vinar_8332

Stanković S, Jakšić A, Vasović N, Lončar BB, Kržanović N, Živanović MZ. Razlika između odziva RADFET u statičkom i dinamičkom on-line mernom sistemu prilikom izlaganja gama zračenju Co60. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:579-586.
https://hdl.handle.net/21.15107/rcub_vinar_8332 .

Stanković, Srboljub, Jakšić, Aleksandar, Vasović, Nikola, Lončar, Boris B., Kržanović, Nikola, Živanović, Miloš Z., "Razlika između odziva RADFET u statičkom i dinamičkom on-line mernom sistemu prilikom izlaganja gama zračenju Co60" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):579-586,
https://hdl.handle.net/21.15107/rcub_vinar_8332 .

TY  - CONF
AU  - Awhida, Ahmed
AU  - Ujić, Predrag
AU  - Kolarž, Predrag M.
AU  - Čeliković, Igor T.
AU  - Milinčić, Miroljub A.
AU  - Lončar, Aleksandra M.
AU  - Lončar, Boris B.
PY  - 2017
UR  - http://www.rad-proceedings.org/paper.php?id=129
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7993
AB  - With an increase in the awareness of the need to save energy, residents tend to live in dwellings with increasingly tight windows and doors, thus reducing the ventilation rate of indoor air which leads to an increased accumulation of radon indoors. Having in mind that a dose from an exposure to inhaled radon and its progenies can be higher than a dose received from radium in building materials, it is suggested that radon exhalation measurements should receive due attention. In this contribution, the authors compare results gathered using a few methods for radon exhalation measurement and discuss its merits and demerits.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Merits and demerits of different methods for radon exhalation measurements for building materials
VL  - 2
SP  - 132
EP  - 136
DO  - 10.21175/RadProc.2017.27
ER  - 

@conference{
author = "Awhida, Ahmed and Ujić, Predrag and Kolarž, Predrag M. and Čeliković, Igor T. and Milinčić, Miroljub A. and Lončar, Aleksandra M. and Lončar, Boris B.",
year = "2017",
abstract = "With an increase in the awareness of the need to save energy, residents tend to live in dwellings with increasingly tight windows and doors, thus reducing the ventilation rate of indoor air which leads to an increased accumulation of radon indoors. Having in mind that a dose from an exposure to inhaled radon and its progenies can be higher than a dose received from radium in building materials, it is suggested that radon exhalation measurements should receive due attention. In this contribution, the authors compare results gathered using a few methods for radon exhalation measurement and discuss its merits and demerits.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Merits and demerits of different methods for radon exhalation measurements for building materials",
volume = "2",
pages = "132-136",
doi = "10.21175/RadProc.2017.27"
}

Awhida, A., Ujić, P., Kolarž, P. M., Čeliković, I. T., Milinčić, M. A., Lončar, A. M.,& Lončar, B. B.. (2017). Merits and demerits of different methods for radon exhalation measurements for building materials. in RAD Conference Proceedings
RAD Association., 2, 132-136.
https://doi.org/10.21175/RadProc.2017.27

Awhida A, Ujić P, Kolarž PM, Čeliković IT, Milinčić MA, Lončar AM, Lončar BB. Merits and demerits of different methods for radon exhalation measurements for building materials. in RAD Conference Proceedings. 2017;2:132-136.
doi:10.21175/RadProc.2017.27 .

Awhida, Ahmed, Ujić, Predrag, Kolarž, Predrag M., Čeliković, Igor T., Milinčić, Miroljub A., Lončar, Aleksandra M., Lončar, Boris B., "Merits and demerits of different methods for radon exhalation measurements for building materials" in RAD Conference Proceedings, 2 (2017):132-136,
https://doi.org/10.21175/RadProc.2017.27 . .

TY  - JOUR
AU  - Fetahović, Irfan S.
AU  - Dolićanin, Edin C.
AU  - Lazarević, Đorđe R.
AU  - Lončar, Boris B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1938
AB  - In this paper we give an overview of radiation effects in emergent, non-volatile memory technologies. Investigations into radiation hardness of resistive random access memory, ferroelectric random access memory, magneto-resistive random access memory, and phase change memory are presented in cases where these memory devices were subjected to different types of radiation. The obtained results proved high radiation tolerance of studied devices making them good candidates for application in radiation-intensive environments.
T2  - Nuclear technology and radiation protection
T1  - Overview of Radiation Effects on Emerging Non-Volatile Memory Technologies
VL  - 32
IS  - 4
SP  - 381
EP  - 392
DO  - 10.2298/NTRP1704381F
ER  - 

@article{
author = "Fetahović, Irfan S. and Dolićanin, Edin C. and Lazarević, Đorđe R. and Lončar, Boris B.",
year = "2017",
abstract = "In this paper we give an overview of radiation effects in emergent, non-volatile memory technologies. Investigations into radiation hardness of resistive random access memory, ferroelectric random access memory, magneto-resistive random access memory, and phase change memory are presented in cases where these memory devices were subjected to different types of radiation. The obtained results proved high radiation tolerance of studied devices making them good candidates for application in radiation-intensive environments.",
journal = "Nuclear technology and radiation protection",
title = "Overview of Radiation Effects on Emerging Non-Volatile Memory Technologies",
volume = "32",
number = "4",
pages = "381-392",
doi = "10.2298/NTRP1704381F"
}

Fetahović, I. S., Dolićanin, E. C., Lazarević, Đ. R.,& Lončar, B. B.. (2017). Overview of Radiation Effects on Emerging Non-Volatile Memory Technologies. in Nuclear technology and radiation protection, 32(4), 381-392.
https://doi.org/10.2298/NTRP1704381F

Fetahović IS, Dolićanin EC, Lazarević ĐR, Lončar BB. Overview of Radiation Effects on Emerging Non-Volatile Memory Technologies. in Nuclear technology and radiation protection. 2017;32(4):381-392.
doi:10.2298/NTRP1704381F .

Fetahović, Irfan S., Dolićanin, Edin C., Lazarević, Đorđe R., Lončar, Boris B., "Overview of Radiation Effects on Emerging Non-Volatile Memory Technologies" in Nuclear technology and radiation protection, 32, no. 4 (2017):381-392,
https://doi.org/10.2298/NTRP1704381F . .

TY  - JOUR
AU  - Kopanja, Lazar
AU  - Kralj, Slavko
AU  - Žunić, Dragiša
AU  - Lončar, Boris B.
AU  - Tadić, Marin
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1089
AB  - For the first time, particle shape analysis of silica coated iron oxide (maghemite/magnetite) nanoparticle clusters (core-shell nanostructures) is discussed using computational methods. We analyzed three samples of core-shell nanostructures synthesized with different thickness of the silica shell. A new computational method is presented and successfully applied to the segmentation of the core-shell nanoparticles, as one of the main problems in image analysis of the TEM micrographs. We have introduced the circularity coefficient, marked with k(circ) and defined as the ratio of circularity measure C-2(S) of nanoparticles core and circularity measure core-shell nanoparticles in order to answer the question how the shell affects the overall shape of the final core-shell structure, with respect to circularity. More precisely, the circularity coefficient determines whether the circularity of the core-shell nanoparticle is higher, lower or equal to the circularity of the core. We have also determined the shells share in the overall area of the core-shell nanoparticle. The core-shell nanoparticle clusters here investigated exhibit superparamagnetic properties at room temperature, thus emphasizing their potential for use in practical applications such as in biomedical and particle separation. We show that the saturation magnetization strength can be easily adjusted by controlling the thickness of the silica shell. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PB  - Elsevier
T2  - Ceramics International
T1  - Core-shell superparamagnetic iron oxide nanoparticle (SPION) clusters: TEM micrograph analysis, particle design and shape analysis
VL  - 42
IS  - 9
SP  - 10976
EP  - 10984
DO  - 10.1016/j.ceramint.2016.03.235
ER  - 

@article{
author = "Kopanja, Lazar and Kralj, Slavko and Žunić, Dragiša and Lončar, Boris B. and Tadić, Marin",
year = "2016",
abstract = "For the first time, particle shape analysis of silica coated iron oxide (maghemite/magnetite) nanoparticle clusters (core-shell nanostructures) is discussed using computational methods. We analyzed three samples of core-shell nanostructures synthesized with different thickness of the silica shell. A new computational method is presented and successfully applied to the segmentation of the core-shell nanoparticles, as one of the main problems in image analysis of the TEM micrographs. We have introduced the circularity coefficient, marked with k(circ) and defined as the ratio of circularity measure C-2(S) of nanoparticles core and circularity measure core-shell nanoparticles in order to answer the question how the shell affects the overall shape of the final core-shell structure, with respect to circularity. More precisely, the circularity coefficient determines whether the circularity of the core-shell nanoparticle is higher, lower or equal to the circularity of the core. We have also determined the shells share in the overall area of the core-shell nanoparticle. The core-shell nanoparticle clusters here investigated exhibit superparamagnetic properties at room temperature, thus emphasizing their potential for use in practical applications such as in biomedical and particle separation. We show that the saturation magnetization strength can be easily adjusted by controlling the thickness of the silica shell. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Core-shell superparamagnetic iron oxide nanoparticle (SPION) clusters: TEM micrograph analysis, particle design and shape analysis",
volume = "42",
number = "9",
pages = "10976-10984",
doi = "10.1016/j.ceramint.2016.03.235"
}

Kopanja, L., Kralj, S., Žunić, D., Lončar, B. B.,& Tadić, M.. (2016). Core-shell superparamagnetic iron oxide nanoparticle (SPION) clusters: TEM micrograph analysis, particle design and shape analysis. in Ceramics International
Elsevier., 42(9), 10976-10984.
https://doi.org/10.1016/j.ceramint.2016.03.235

Kopanja L, Kralj S, Žunić D, Lončar BB, Tadić M. Core-shell superparamagnetic iron oxide nanoparticle (SPION) clusters: TEM micrograph analysis, particle design and shape analysis. in Ceramics International. 2016;42(9):10976-10984.
doi:10.1016/j.ceramint.2016.03.235 .

Kopanja, Lazar, Kralj, Slavko, Žunić, Dragiša, Lončar, Boris B., Tadić, Marin, "Core-shell superparamagnetic iron oxide nanoparticle (SPION) clusters: TEM micrograph analysis, particle design and shape analysis" in Ceramics International, 42, no. 9 (2016):10976-10984,
https://doi.org/10.1016/j.ceramint.2016.03.235 . .

TY  - JOUR
AU  - Kopanja, Lazar
AU  - Žunić, Dragiša
AU  - Lončar, Boris B.
AU  - Gyergyek, Sašo
AU  - Tadić, Marin
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1198
AB  - We propose using a new circularity measure, and an ellipticity measure. Observing an example of hematite (alpha-Fe2O3) nanoparticles, we compared and discussed a new circularity measure, with a standard measure. It has been shown that using the new measure gives better results when working with low-quality images or with low-resolution images. Using the same images modified ellipticity measure has also been discussed. We have analyzed the problems arising from computing the elongation of a shape. We have shown that the standard approach to compute elongation is not appropriate for some particles. We presented the application of the modified approach to solve this problem. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Measurement
T1  - Quantifying shapes of nanoparticles using modified circularity and ellipticity measures
VL  - 92
SP  - 252
EP  - 263
DO  - 10.1016/j.measurement.2016.06.021
ER  - 

@article{
author = "Kopanja, Lazar and Žunić, Dragiša and Lončar, Boris B. and Gyergyek, Sašo and Tadić, Marin",
year = "2016",
abstract = "We propose using a new circularity measure, and an ellipticity measure. Observing an example of hematite (alpha-Fe2O3) nanoparticles, we compared and discussed a new circularity measure, with a standard measure. It has been shown that using the new measure gives better results when working with low-quality images or with low-resolution images. Using the same images modified ellipticity measure has also been discussed. We have analyzed the problems arising from computing the elongation of a shape. We have shown that the standard approach to compute elongation is not appropriate for some particles. We presented the application of the modified approach to solve this problem. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Measurement",
title = "Quantifying shapes of nanoparticles using modified circularity and ellipticity measures",
volume = "92",
pages = "252-263",
doi = "10.1016/j.measurement.2016.06.021"
}

Kopanja, L., Žunić, D., Lončar, B. B., Gyergyek, S.,& Tadić, M.. (2016). Quantifying shapes of nanoparticles using modified circularity and ellipticity measures. in Measurement, 92, 252-263.
https://doi.org/10.1016/j.measurement.2016.06.021

Kopanja L, Žunić D, Lončar BB, Gyergyek S, Tadić M. Quantifying shapes of nanoparticles using modified circularity and ellipticity measures. in Measurement. 2016;92:252-263.
doi:10.1016/j.measurement.2016.06.021 .

Kopanja, Lazar, Žunić, Dragiša, Lončar, Boris B., Gyergyek, Sašo, Tadić, Marin, "Quantifying shapes of nanoparticles using modified circularity and ellipticity measures" in Measurement, 92 (2016):252-263,
https://doi.org/10.1016/j.measurement.2016.06.021 . .

TY  - JOUR
AU  - Awhida, Ahmed
AU  - Ujić, Predrag
AU  - Vukanac, Ivana
AU  - Đurašević, Mirjana M.
AU  - Kandić, Aleksandar
AU  - Čeliković, Igor T.
AU  - Lončar, Boris B.
AU  - Kolarž, Predrag M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1346
AB  - In the era of the energy saving policy (i.e. more air tight doors and windows), the radon exhaled from building materials tends to increase its concentration in indoor air, which increases the importance of the measurement of radon exhalation from building materials. This manuscript presents a novel method of the radon exhalation measurement using only a HPGe detector or any other gamma spectrometer. Comparing it with the already used methods of radon exhalation measurements, this method provides the measurement of the emanation coefficient, the radon diffusion length and the radon exhalation rate, all within the same measurement, which additionally defines materials radon protective properties. Furthermore it does not necessitate additional equipment for radon or radon exhalation measurement, which simplifies measurement technique, and thus potentially facilitates introduction of legal obligation for radon exhalation determination in building materials. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Journal of Environmental Radioactivity
T1  - Novel method of measurement of radon exhalation from building materials
VL  - 164
SP  - 337
EP  - 343
DO  - 10.1016/j.jenvrad.2016.08.009
ER  - 

@article{
author = "Awhida, Ahmed and Ujić, Predrag and Vukanac, Ivana and Đurašević, Mirjana M. and Kandić, Aleksandar and Čeliković, Igor T. and Lončar, Boris B. and Kolarž, Predrag M.",
year = "2016",
abstract = "In the era of the energy saving policy (i.e. more air tight doors and windows), the radon exhaled from building materials tends to increase its concentration in indoor air, which increases the importance of the measurement of radon exhalation from building materials. This manuscript presents a novel method of the radon exhalation measurement using only a HPGe detector or any other gamma spectrometer. Comparing it with the already used methods of radon exhalation measurements, this method provides the measurement of the emanation coefficient, the radon diffusion length and the radon exhalation rate, all within the same measurement, which additionally defines materials radon protective properties. Furthermore it does not necessitate additional equipment for radon or radon exhalation measurement, which simplifies measurement technique, and thus potentially facilitates introduction of legal obligation for radon exhalation determination in building materials. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Journal of Environmental Radioactivity",
title = "Novel method of measurement of radon exhalation from building materials",
volume = "164",
pages = "337-343",
doi = "10.1016/j.jenvrad.2016.08.009"
}

Awhida, A., Ujić, P., Vukanac, I., Đurašević, M. M., Kandić, A., Čeliković, I. T., Lončar, B. B.,& Kolarž, P. M.. (2016). Novel method of measurement of radon exhalation from building materials. in Journal of Environmental Radioactivity, 164, 337-343.
https://doi.org/10.1016/j.jenvrad.2016.08.009

Awhida A, Ujić P, Vukanac I, Đurašević MM, Kandić A, Čeliković IT, Lončar BB, Kolarž PM. Novel method of measurement of radon exhalation from building materials. in Journal of Environmental Radioactivity. 2016;164:337-343.
doi:10.1016/j.jenvrad.2016.08.009 .

Awhida, Ahmed, Ujić, Predrag, Vukanac, Ivana, Đurašević, Mirjana M., Kandić, Aleksandar, Čeliković, Igor T., Lončar, Boris B., Kolarž, Predrag M., "Novel method of measurement of radon exhalation from building materials" in Journal of Environmental Radioactivity, 164 (2016):337-343,
https://doi.org/10.1016/j.jenvrad.2016.08.009 . .

TY  - CONF
AU  - Lončar, Boris
AU  - Đurašević, Mirjana M.
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
AU  - Milošević, Zoran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12830
AB  - The Direct Matrices Multiplication (DMM) method was developed by D. Novkovi as theoretical model for coincidence summing of X-and gamma rays of radionuclides with complex decays schemes. This method enables: a) identification of allpossible decay paths and decay paths outcomes; b)calculation of particular path outcome, probabilities and corresponding energy deposited in the detector; c) determination of theoretical expressions for count rates of single and summing peaks as well as for total count rate, where the unknown quantities are the total and peak detection efficiencies. This method can be applied to the point sources and for small source-to-detector distances. lt was successfully applied to the decay of 13e6", 576o, '338., and 75Se. The DMM method was tested on the equivalence with other methods for calculation of coincidence summing corrections by G. Kanisch, T. Vidmar and O. Sima and a good agreement with the GESPRECOR program was confirmed for point sources of 133Ba, 13aCs and, 152Er. ln the case of the volume sources, calculations of coincidence summing corrections, peak and total efficiencies are more complex than for point sources. Laboratory for Nuclear and Plasma Physics participated in the intercomparison, organized by the Gamma-ray Spectrometry working group of the lnternational Committee for Radionuclide Metrology (ICRM). Volume iorr.", filled by radioactive solution ("'Er, 134Cs) and with different absorbers have been considered. Results obtained by DMM method showed satisfactory agreement with the mean values.
C3  - 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts
T1  - Application of the Direct Matrices Multiplication method in gamma ray spectrometry
SP  - 120
EP  - 120
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12830
ER  - 

@conference{
author = "Lončar, Boris and Đurašević, Mirjana M. and Kandić, Aleksandar and Vukanac, Ivana and Šešlak, Bojan and Milošević, Zoran",
year = "2015",
abstract = "The Direct Matrices Multiplication (DMM) method was developed by D. Novkovi as theoretical model for coincidence summing of X-and gamma rays of radionuclides with complex decays schemes. This method enables: a) identification of allpossible decay paths and decay paths outcomes; b)calculation of particular path outcome, probabilities and corresponding energy deposited in the detector; c) determination of theoretical expressions for count rates of single and summing peaks as well as for total count rate, where the unknown quantities are the total and peak detection efficiencies. This method can be applied to the point sources and for small source-to-detector distances. lt was successfully applied to the decay of 13e6", 576o, '338., and 75Se. The DMM method was tested on the equivalence with other methods for calculation of coincidence summing corrections by G. Kanisch, T. Vidmar and O. Sima and a good agreement with the GESPRECOR program was confirmed for point sources of 133Ba, 13aCs and, 152Er. ln the case of the volume sources, calculations of coincidence summing corrections, peak and total efficiencies are more complex than for point sources. Laboratory for Nuclear and Plasma Physics participated in the intercomparison, organized by the Gamma-ray Spectrometry working group of the lnternational Committee for Radionuclide Metrology (ICRM). Volume iorr.", filled by radioactive solution ("'Er, 134Cs) and with different absorbers have been considered. Results obtained by DMM method showed satisfactory agreement with the mean values.",
journal = "3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts",
title = "Application of the Direct Matrices Multiplication method in gamma ray spectrometry",
pages = "120-120",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12830"
}

Lončar, B., Đurašević, M. M., Kandić, A., Vukanac, I., Šešlak, B.,& Milošević, Z.. (2015). Application of the Direct Matrices Multiplication method in gamma ray spectrometry. in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts, 120-120.
https://hdl.handle.net/21.15107/rcub_vinar_12830

Lončar B, Đurašević MM, Kandić A, Vukanac I, Šešlak B, Milošević Z. Application of the Direct Matrices Multiplication method in gamma ray spectrometry. in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts. 2015;:120-120.
https://hdl.handle.net/21.15107/rcub_vinar_12830 .

Lončar, Boris, Đurašević, Mirjana M., Kandić, Aleksandar, Vukanac, Ivana, Šešlak, Bojan, Milošević, Zoran, "Application of the Direct Matrices Multiplication method in gamma ray spectrometry" in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts (2015):120-120,
https://hdl.handle.net/21.15107/rcub_vinar_12830 .

TY  - CONF
AU  - Stanković, Srboljub
AU  - Jakšić, Aleksandar
AU  - Ilić, Radovan
AU  - Nikolić, Dragana
AU  - Lončar, Boris
AU  - Lazarević, Đorđe
AU  - Karadžić, Katarina
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12151
AB  - MOSFET electronic components are already the subject of several decades of research in various fields of dosimetry and radiation protection. Special interest appeared when these components are started to be used as dosimeters in radiotherapy with electron beams. However, if one looks much more serious in the wider scientific research horizon, all the results obtained in experiments with precisely defined energies of incident electrons can be used in other disciplines which consider the impacts spectra of cosmic radiation on electronic devices, which is especially importance for cosmic science and space research instrumentation. In this paper, one of the objectives was to examine the electrical characteristics specially designed ESAPMOS RADFET dosimeters in the experiments that were conducted on a linear accelerator installations. RADFET components are bombarded electron beams energy of 6 MeV and 8 MeV, and then are followed by changes in threshold voltage shift mean values depending on the change of absorbed dose is referred to as D(cGy) was determined in water. Conclusions performance RADFET components are more than encouraging in terms of further research to improve the linearity of the energy dependence as widely energy electrons. In the second part of the test complex structure of packaging components RADFET focus is placed on the determination of the energy deposited in layers that are of interest for the analysis of microscopic processes related to the recombination of radiation-induced electron-hole pairs. Transport incident electrons through all the layers of structure RADFET component type ESAPMOS was carried out numerical simulations of the Monte Carlo method using the software package FOTELP-2K12. On this occasion, were taken into account all the physical processes of interaction of electrons with materials given structure. When he conquered the numerical application of mathematical and physical model for determining the value of the absorbed energy as the energy deposited per unit mass in a given layers with different materials, it could be accessed defining physical shielding factor (PSF) for a given structure RADFET components. Physical shielding factor (PSF) is defined as the ratio of absorbed dose values, which in fact means that it is equal to the energy deposited when the RADFET is shielded with protection, and the RADFET without lid. When we know the energy dependence factor for PSF of RADFET with and without armour, can be carried out and the analysis of whether and to what extent the energy required compensating the electronic components. Monte Carlo simulations were performed for the transport of incident electrons from 4 MeV, 6 MeV, 8 MeV and 12 MeV. It can be concluded that the different energy of incident electrons there is a significant influence of material Kovar on the absorbed energy in SiO2 and Si layers structure RADFET, in cases where Kovar used among other things as physical protection.
PB  - Niš : RAD Association
C3  - RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts
T1  - Experiments with RADFET dosimeter in electron-beams irradiation and numerical computation of the physical shielding factor
SP  - 153
EP  - 153
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12151
ER  - 

@conference{
author = "Stanković, Srboljub and Jakšić, Aleksandar and Ilić, Radovan and Nikolić, Dragana and Lončar, Boris and Lazarević, Đorđe and Karadžić, Katarina",
year = "2015",
abstract = "MOSFET electronic components are already the subject of several decades of research in various fields of dosimetry and radiation protection. Special interest appeared when these components are started to be used as dosimeters in radiotherapy with electron beams. However, if one looks much more serious in the wider scientific research horizon, all the results obtained in experiments with precisely defined energies of incident electrons can be used in other disciplines which consider the impacts spectra of cosmic radiation on electronic devices, which is especially importance for cosmic science and space research instrumentation. In this paper, one of the objectives was to examine the electrical characteristics specially designed ESAPMOS RADFET dosimeters in the experiments that were conducted on a linear accelerator installations. RADFET components are bombarded electron beams energy of 6 MeV and 8 MeV, and then are followed by changes in threshold voltage shift mean values depending on the change of absorbed dose is referred to as D(cGy) was determined in water. Conclusions performance RADFET components are more than encouraging in terms of further research to improve the linearity of the energy dependence as widely energy electrons. In the second part of the test complex structure of packaging components RADFET focus is placed on the determination of the energy deposited in layers that are of interest for the analysis of microscopic processes related to the recombination of radiation-induced electron-hole pairs. Transport incident electrons through all the layers of structure RADFET component type ESAPMOS was carried out numerical simulations of the Monte Carlo method using the software package FOTELP-2K12. On this occasion, were taken into account all the physical processes of interaction of electrons with materials given structure. When he conquered the numerical application of mathematical and physical model for determining the value of the absorbed energy as the energy deposited per unit mass in a given layers with different materials, it could be accessed defining physical shielding factor (PSF) for a given structure RADFET components. Physical shielding factor (PSF) is defined as the ratio of absorbed dose values, which in fact means that it is equal to the energy deposited when the RADFET is shielded with protection, and the RADFET without lid. When we know the energy dependence factor for PSF of RADFET with and without armour, can be carried out and the analysis of whether and to what extent the energy required compensating the electronic components. Monte Carlo simulations were performed for the transport of incident electrons from 4 MeV, 6 MeV, 8 MeV and 12 MeV. It can be concluded that the different energy of incident electrons there is a significant influence of material Kovar on the absorbed energy in SiO2 and Si layers structure RADFET, in cases where Kovar used among other things as physical protection.",
publisher = "Niš : RAD Association",
journal = "RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts",
title = "Experiments with RADFET dosimeter in electron-beams irradiation and numerical computation of the physical shielding factor",
pages = "153-153",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12151"
}

Stanković, S., Jakšić, A., Ilić, R., Nikolić, D., Lončar, B., Lazarević, Đ.,& Karadžić, K.. (2015). Experiments with RADFET dosimeter in electron-beams irradiation and numerical computation of the physical shielding factor. in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts
Niš : RAD Association., 153-153.
https://hdl.handle.net/21.15107/rcub_vinar_12151

Stanković S, Jakšić A, Ilić R, Nikolić D, Lončar B, Lazarević Đ, Karadžić K. Experiments with RADFET dosimeter in electron-beams irradiation and numerical computation of the physical shielding factor. in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts. 2015;:153-153.
https://hdl.handle.net/21.15107/rcub_vinar_12151 .

Stanković, Srboljub, Jakšić, Aleksandar, Ilić, Radovan, Nikolić, Dragana, Lončar, Boris, Lazarević, Đorđe, Karadžić, Katarina, "Experiments with RADFET dosimeter in electron-beams irradiation and numerical computation of the physical shielding factor" in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts (2015):153-153,
https://hdl.handle.net/21.15107/rcub_vinar_12151 .

TY  - JOUR
AU  - Nikezić, Dušan P.
AU  - Lončar, Boris B.
AU  - Gršić, Zoran J.
AU  - Dimović, Slavko
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/401
AB  - This paper presents an algorithm for the calculation of internal and external doses as an integral part of the mathematical model of atmospheric dispersion. The air pollution dispersion model is used on average annual activity concentration in the air, deposition on soil and field of total annual dose to a hypothetical resident contaminated by air in the vicinity of a nuclear reactor. The results of modeling were compared with values from an IAEA publication for a given scenario of radionuclide emission to the atmospheric boundary layer. Due to small differences in the results, compared to the IAEA recommended model, the model presented in the paper can be used as a basis for this type of analysis.
T2  - Nuclear technology and radiation protection
T1  - Mathematical Modeling of Environmental Impacts of a Reactor Through the Air
VL  - 29
IS  - 4
SP  - 268
EP  - 273
DO  - 10.2298/NTRP1404268N
ER  - 

@article{
author = "Nikezić, Dušan P. and Lončar, Boris B. and Gršić, Zoran J. and Dimović, Slavko",
year = "2014",
abstract = "This paper presents an algorithm for the calculation of internal and external doses as an integral part of the mathematical model of atmospheric dispersion. The air pollution dispersion model is used on average annual activity concentration in the air, deposition on soil and field of total annual dose to a hypothetical resident contaminated by air in the vicinity of a nuclear reactor. The results of modeling were compared with values from an IAEA publication for a given scenario of radionuclide emission to the atmospheric boundary layer. Due to small differences in the results, compared to the IAEA recommended model, the model presented in the paper can be used as a basis for this type of analysis.",
journal = "Nuclear technology and radiation protection",
title = "Mathematical Modeling of Environmental Impacts of a Reactor Through the Air",
volume = "29",
number = "4",
pages = "268-273",
doi = "10.2298/NTRP1404268N"
}

Nikezić, D. P., Lončar, B. B., Gršić, Z. J.,& Dimović, S.. (2014). Mathematical Modeling of Environmental Impacts of a Reactor Through the Air. in Nuclear technology and radiation protection, 29(4), 268-273.
https://doi.org/10.2298/NTRP1404268N

Nikezić DP, Lončar BB, Gršić ZJ, Dimović S. Mathematical Modeling of Environmental Impacts of a Reactor Through the Air. in Nuclear technology and radiation protection. 2014;29(4):268-273.
doi:10.2298/NTRP1404268N .

Nikezić, Dušan P., Lončar, Boris B., Gršić, Zoran J., Dimović, Slavko, "Mathematical Modeling of Environmental Impacts of a Reactor Through the Air" in Nuclear technology and radiation protection, 29, no. 4 (2014):268-273,
https://doi.org/10.2298/NTRP1404268N . .