TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Stajčić, Ivana
AU  - Stoiljković, Milovan
AU  - Janković, Marija
AU  - Kapuran, Đorđe
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12570
AB  - Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana.
AB  - Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.
PB  - Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika
T1  - Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system
SP  - 115
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12570
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Stajčić, Ivana and Stoiljković, Milovan and Janković, Marija and Kapuran, Đorđe and Veličković, Suzana",
year = "2023",
abstract = "Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana., Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.",
publisher = "Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika, Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system",
pages = "115-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12570"
}

Veljković, F., Janković, B., Stajčić, I., Stoiljković, M., Janković, M., Kapuran, Đ.,& Veličković, S.. (2023). Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije., 115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570

Veljković F, Janković B, Stajčić I, Stoiljković M, Janković M, Kapuran Đ, Veličković S. Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

Veljković, Filip, Janković, Bojan, Stajčić, Ivana, Stoiljković, Milovan, Janković, Marija, Kapuran, Đorđe, Veličković, Suzana, "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):115-118,
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

TY  - CONF
AU  - Sarap, Nataša
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12231
PB  - Niš : RAD Centre
C3  - RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts
T1  - Quantification of radioactive metabolite Sr-90 in environmental samples
SP  - 203
EP  - 203
DO  - 10.21175/rad.abstr.book.2023.34.12
ER  - 

@conference{
author = "Sarap, Nataša and Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana",
year = "2023",
publisher = "Niš : RAD Centre",
journal = "RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts",
title = "Quantification of radioactive metabolite Sr-90 in environmental samples",
pages = "203-203",
doi = "10.21175/rad.abstr.book.2023.34.12"
}

Sarap, N., Janković, M., Krneta Nikolić, J., Rajačić, M.,& Vukanac, I.. (2023). Quantification of radioactive metabolite Sr-90 in environmental samples. in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts
Niš : RAD Centre., 203-203.
https://doi.org/10.21175/rad.abstr.book.2023.34.12

Sarap N, Janković M, Krneta Nikolić J, Rajačić M, Vukanac I. Quantification of radioactive metabolite Sr-90 in environmental samples. in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts. 2023;:203-203.
doi:10.21175/rad.abstr.book.2023.34.12 .

Sarap, Nataša, Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, "Quantification of radioactive metabolite Sr-90 in environmental samples" in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts (2023):203-203,
https://doi.org/10.21175/rad.abstr.book.2023.34.12 . .

TY  - CONF
AU  - Vukašinović, Ivana
AU  - Todorović, Dragana
AU  - Krneta-Nikolić, Jelena D.
AU  - Rajačić, Milica
AU  - Janković, Marija M.
AU  - Sarap, Nataša
AU  - Šćekić, Julija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11945
AB  - Jedan od značajnih načina kontrole rada termoelektrana (TE) na ugalj je kontinuirano praćenje vrednosti koncentracija aktivnosti radionuklida prirodnog porekla sadržanih prvenstveno u uglju, a potom i uzorcima pepela i šljake kao glavnim produkatima sagorevanja uglja koje je zbog svoje obilne proizvodnje neophodno odlagati na deponije otpada. Koncentracije aktivnosti prirodnih radionuklida 238U, 235U, 226Ra, 210Pb, 232Th i 40K, koje bi u životnoj sredini potencijalno mogle biti preraspodeljene kao posledica rada TE, podležu redovnoj kontroli u uzorcima uglja, šljake, elektrofilterskog pepela, kao i u uzorcima sakupljenim sa deponija pepela, na aktivnoj i pasivnoj kaseti, i zemljištu uzorkovanom na manjoj i većoj udaljenosti od TE. Predmet ovoga rada je analiza rezultata višegodišnjih merenja obavljenih u periodu od 2010. do 2022. godine. Godišnje vrednosti koncentracija aktivnosti izmerene za svaki ispitivani radionuklid i svaku od sedam vrsta uzoraka posmatrane su kao hronološki nizovi podataka koji čine diskretne vremenske serije za koje su rezultati statističke analize ukazivali da se mogu opisati kao procesi tzv. belog šuma.
AB  - One of the most important means of controlling the operation of coal-fired power plant (CFPP) is the continuous monitoring of naturally occurring activity concentrations of radionuclides contained primarily in coal and, consequently, in ash and slag samples, the main coal combustion products that must be disposed of in landfills due to their high production. The activity concentrations of the naturally occurring radionuclides 238U, 235U, 226Ra, 210Pb, 232Th, and 40K, which could potentially be released into the environment as a result of the CFPP operation, are regularly monitored in the samples of coal, slag, and fly ash, as well as in the samples of ash piles on the active and passive cassettes and in the soil sampled at lesser and greater distances from the CFPP. The aim of this work is to analyse the results of the multi-year activity concentration measurements carried out in the period from 2010 to 2022. The annual activity concentration values measured for each studied radionuclide and each of the seven sample types were observed as a chronological sequence of data forming discrete time series, which, according to the results of statistical analysis, may be described as white noise processes.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Raspodela koncentracija aktivnosti prirodnih radionukida u uzorcima životne sredine kao posledica rada termoelektrane “Kolubara” u periodu 2010 – 2022. godine
T1  - The Activity Concentration Distributions of Naturally Occurring Radionuclides in the Environmental Samples as a Result of the Operation of the “Kolubara” Coal-Fired Power Plant in the Period of 2010 – 2022.
SP  - 62
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11945
ER  - 

@conference{
author = "Vukašinović, Ivana and Todorović, Dragana and Krneta-Nikolić, Jelena D. and Rajačić, Milica and Janković, Marija M. and Sarap, Nataša and Šćekić, Julija",
year = "2023",
abstract = "Jedan od značajnih načina kontrole rada termoelektrana (TE) na ugalj je kontinuirano praćenje vrednosti koncentracija aktivnosti radionuklida prirodnog porekla sadržanih prvenstveno u uglju, a potom i uzorcima pepela i šljake kao glavnim produkatima sagorevanja uglja koje je zbog svoje obilne proizvodnje neophodno odlagati na deponije otpada. Koncentracije aktivnosti prirodnih radionuklida 238U, 235U, 226Ra, 210Pb, 232Th i 40K, koje bi u životnoj sredini potencijalno mogle biti preraspodeljene kao posledica rada TE, podležu redovnoj kontroli u uzorcima uglja, šljake, elektrofilterskog pepela, kao i u uzorcima sakupljenim sa deponija pepela, na aktivnoj i pasivnoj kaseti, i zemljištu uzorkovanom na manjoj i većoj udaljenosti od TE. Predmet ovoga rada je analiza rezultata višegodišnjih merenja obavljenih u periodu od 2010. do 2022. godine. Godišnje vrednosti koncentracija aktivnosti izmerene za svaki ispitivani radionuklid i svaku od sedam vrsta uzoraka posmatrane su kao hronološki nizovi podataka koji čine diskretne vremenske serije za koje su rezultati statističke analize ukazivali da se mogu opisati kao procesi tzv. belog šuma., One of the most important means of controlling the operation of coal-fired power plant (CFPP) is the continuous monitoring of naturally occurring activity concentrations of radionuclides contained primarily in coal and, consequently, in ash and slag samples, the main coal combustion products that must be disposed of in landfills due to their high production. The activity concentrations of the naturally occurring radionuclides 238U, 235U, 226Ra, 210Pb, 232Th, and 40K, which could potentially be released into the environment as a result of the CFPP operation, are regularly monitored in the samples of coal, slag, and fly ash, as well as in the samples of ash piles on the active and passive cassettes and in the soil sampled at lesser and greater distances from the CFPP. The aim of this work is to analyse the results of the multi-year activity concentration measurements carried out in the period from 2010 to 2022. The annual activity concentration values measured for each studied radionuclide and each of the seven sample types were observed as a chronological sequence of data forming discrete time series, which, according to the results of statistical analysis, may be described as white noise processes.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Raspodela koncentracija aktivnosti prirodnih radionukida u uzorcima životne sredine kao posledica rada termoelektrane “Kolubara” u periodu 2010 – 2022. godine, The Activity Concentration Distributions of Naturally Occurring Radionuclides in the Environmental Samples as a Result of the Operation of the “Kolubara” Coal-Fired Power Plant in the Period of 2010 – 2022.",
pages = "62-70",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11945"
}

Vukašinović, I., Todorović, D., Krneta-Nikolić, J. D., Rajačić, M., Janković, M. M., Sarap, N.,& Šćekić, J.. (2023). Raspodela koncentracija aktivnosti prirodnih radionukida u uzorcima životne sredine kao posledica rada termoelektrane “Kolubara” u periodu 2010 – 2022. godine. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 62-70.
https://hdl.handle.net/21.15107/rcub_vinar_11945

Vukašinović I, Todorović D, Krneta-Nikolić JD, Rajačić M, Janković MM, Sarap N, Šćekić J. Raspodela koncentracija aktivnosti prirodnih radionukida u uzorcima životne sredine kao posledica rada termoelektrane “Kolubara” u periodu 2010 – 2022. godine. in 32. simpozijum DZZSCG : zbornik radova. 2023;:62-70.
https://hdl.handle.net/21.15107/rcub_vinar_11945 .

Vukašinović, Ivana, Todorović, Dragana, Krneta-Nikolić, Jelena D., Rajačić, Milica, Janković, Marija M., Sarap, Nataša, Šćekić, Julija, "Raspodela koncentracija aktivnosti prirodnih radionukida u uzorcima životne sredine kao posledica rada termoelektrane “Kolubara” u periodu 2010 – 2022. godine" in 32. simpozijum DZZSCG : zbornik radova (2023):62-70,
https://hdl.handle.net/21.15107/rcub_vinar_11945 .

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Jelić, Ivana
AU  - Šljivić-Ivanović, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12169
AB  - U radu je razmatran potencijalni odnos između dobijenih rezultata za koncentraciju tricijuma u kišnici i rekama, Savi i Dunavu, u Beogradu. Uzorkovanja su vršena svakog meseca tokom 2021. godine. Svi uzorci su koncentrisani primenom metode sa elektrolitičkim obogaćenjem, dok je za detekciju tricijuma korišćen tečni scintilacioni spektrometar. Dobijeni rezultati korišćeni su za izračunavanje količine tricijuma deponovane po m2 površine, kao i prosečnog toka tricijuma u rekama na osnovu protoka vode. Dobijena distribucija tricijuma tumačena je u skladu sa meteorološkim i hidrološkim parametrima.
AB  - The potential relationship between the obtained results for the tritium concentration in precipitation and in the Sava and Danube River in Belgrade was analyzed. Sampling was done during 2021. All samples were concentrated using the method with electrolytic enrichment, while a liquid scintillation spectrometer was used for tritium detection. The obtained results were used to calculate the amount of tritium deposited per m2 of surface as well as to estimate the average flow of tritium in rivers based on river water flow. The obtained distribution of tritium was interpreted in accordance with meteorological and hydrological parameters.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Potencijalni odnos između koncentracije tricijuma u kišnici i rekama
T1  - Relationship Between Tritium Concentrations in Precipitation and Rivers
SP  - 80
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12169
ER  - 

@conference{
author = "Janković, Marija and Sarap, Nataša and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Jelić, Ivana and Šljivić-Ivanović, Marija",
year = "2023",
abstract = "U radu je razmatran potencijalni odnos između dobijenih rezultata za koncentraciju tricijuma u kišnici i rekama, Savi i Dunavu, u Beogradu. Uzorkovanja su vršena svakog meseca tokom 2021. godine. Svi uzorci su koncentrisani primenom metode sa elektrolitičkim obogaćenjem, dok je za detekciju tricijuma korišćen tečni scintilacioni spektrometar. Dobijeni rezultati korišćeni su za izračunavanje količine tricijuma deponovane po m2 površine, kao i prosečnog toka tricijuma u rekama na osnovu protoka vode. Dobijena distribucija tricijuma tumačena je u skladu sa meteorološkim i hidrološkim parametrima., The potential relationship between the obtained results for the tritium concentration in precipitation and in the Sava and Danube River in Belgrade was analyzed. Sampling was done during 2021. All samples were concentrated using the method with electrolytic enrichment, while a liquid scintillation spectrometer was used for tritium detection. The obtained results were used to calculate the amount of tritium deposited per m2 of surface as well as to estimate the average flow of tritium in rivers based on river water flow. The obtained distribution of tritium was interpreted in accordance with meteorological and hydrological parameters.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Potencijalni odnos između koncentracije tricijuma u kišnici i rekama, Relationship Between Tritium Concentrations in Precipitation and Rivers",
pages = "80-85",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12169"
}

Janković, M., Sarap, N., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Jelić, I.,& Šljivić-Ivanović, M.. (2023). Potencijalni odnos između koncentracije tricijuma u kišnici i rekama. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 80-85.
https://hdl.handle.net/21.15107/rcub_vinar_12169

Janković M, Sarap N, Krneta Nikolić J, Rajačić M, Vukanac I, Jelić I, Šljivić-Ivanović M. Potencijalni odnos između koncentracije tricijuma u kišnici i rekama. in 32. simpozijum DZZSCG : zbornik radova. 2023;:80-85.
https://hdl.handle.net/21.15107/rcub_vinar_12169 .

Janković, Marija, Sarap, Nataša, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Jelić, Ivana, Šljivić-Ivanović, Marija, "Potencijalni odnos između koncentracije tricijuma u kišnici i rekama" in 32. simpozijum DZZSCG : zbornik radova (2023):80-85,
https://hdl.handle.net/21.15107/rcub_vinar_12169 .

TY  - CONF
AU  - Sarap, Nataša
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Stanić, Vojislav
AU  - Jelić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12170
AB  - Sprovedeno istraživanje je usmereno na analizu trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom zemljištu i usevima višegodišnjeg oglednog polja. Analiza je urađena primenom akreditovane metode za određivanje ukupne alfa i ukupne beta aktivnosti u čvrstim matriksima. Merenja su obavljena u Laboratoriji za zaštitu od zračenja i zaštitu životne sredine Instituta za nuklearne nauke “Vinča” na niskofonskom gasnom proporcionalnom brojaču Thermo Eberline FHT 770T. Izmerene vrednosti ukupne alfa aktivnosti variraju od 158 Bq/kg do 324 Bq/kg i ukupne beta aktivnosti od 600 Bq/kg do 1324 Bq/kg za uzorke zemljišta. Za uzorke biljnih kultura vrednosti ukupne alfa aktivnosti su u intervalu od 5 Bq/kg do 167 Bq/kg suve materije, dok su vrednosti ukupne beta aktivnosti u intervalu od 180 Bq/kg do 584 Bq/kg suve materije. Rezultati istraživanja su značajni, jer daju osnovne radiološke informacije od vitalnog značaja za ispitivano područje. Ovo je prvi pokušaj generisanja osnovnih podataka o radijacionom opterećenju zemljišta i biljnih kultura poljoprivrednog ekosistema alfa i beta emiterima, koji su određeni skrining metodom za monitoring životnog okruženja.
AB  - The conducted research is focused on the analysis of the trend of changes in gross alpha and gross beta activity in agricultural soil and crops of perennial experimental fields. The analysis was performed using an accredited method for determining gross alpha and gross beta activity in solid matrix. The measurements were performed in the Radiation and Environmental Protection Department in Vinča Institute of nuclear Sciences on a low-level gas proportional counter Thermo Eberline FHT 770T. The measured values of gross alpha activity varied from 158 Bq/kg to 324 Bq/kg, and from 600 Bq/kg to 1324 Bq/kg for the gross beta activity in soil samples. For plant samples, values ranged from 5 Bq/kg to 167 Bq/kg of dry matter, and from 180 Bq/kg to 584 Bq/kg of dry matter for gross alpha and gross beta activity, respectively. The results of the research are significant, because they provide basic radiological information of vital importance for the investigated area. This is the first attempt to generate data base on the radiation load of soil and crops of the agricultural ecosystem with alpha and beta emitters, which were determined by the screening method for environmental monitoring.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Analiza trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom ekosistemu
T1  - Analysis of Trend of the Gross Alpha and Gross Beta Activity in the Agricultural Ecosystem
SP  - 86
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12170
ER  - 

@conference{
author = "Sarap, Nataša and Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Stanić, Vojislav and Jelić, Ivana",
year = "2023",
abstract = "Sprovedeno istraživanje je usmereno na analizu trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom zemljištu i usevima višegodišnjeg oglednog polja. Analiza je urađena primenom akreditovane metode za određivanje ukupne alfa i ukupne beta aktivnosti u čvrstim matriksima. Merenja su obavljena u Laboratoriji za zaštitu od zračenja i zaštitu životne sredine Instituta za nuklearne nauke “Vinča” na niskofonskom gasnom proporcionalnom brojaču Thermo Eberline FHT 770T. Izmerene vrednosti ukupne alfa aktivnosti variraju od 158 Bq/kg do 324 Bq/kg i ukupne beta aktivnosti od 600 Bq/kg do 1324 Bq/kg za uzorke zemljišta. Za uzorke biljnih kultura vrednosti ukupne alfa aktivnosti su u intervalu od 5 Bq/kg do 167 Bq/kg suve materije, dok su vrednosti ukupne beta aktivnosti u intervalu od 180 Bq/kg do 584 Bq/kg suve materije. Rezultati istraživanja su značajni, jer daju osnovne radiološke informacije od vitalnog značaja za ispitivano područje. Ovo je prvi pokušaj generisanja osnovnih podataka o radijacionom opterećenju zemljišta i biljnih kultura poljoprivrednog ekosistema alfa i beta emiterima, koji su određeni skrining metodom za monitoring životnog okruženja., The conducted research is focused on the analysis of the trend of changes in gross alpha and gross beta activity in agricultural soil and crops of perennial experimental fields. The analysis was performed using an accredited method for determining gross alpha and gross beta activity in solid matrix. The measurements were performed in the Radiation and Environmental Protection Department in Vinča Institute of nuclear Sciences on a low-level gas proportional counter Thermo Eberline FHT 770T. The measured values of gross alpha activity varied from 158 Bq/kg to 324 Bq/kg, and from 600 Bq/kg to 1324 Bq/kg for the gross beta activity in soil samples. For plant samples, values ranged from 5 Bq/kg to 167 Bq/kg of dry matter, and from 180 Bq/kg to 584 Bq/kg of dry matter for gross alpha and gross beta activity, respectively. The results of the research are significant, because they provide basic radiological information of vital importance for the investigated area. This is the first attempt to generate data base on the radiation load of soil and crops of the agricultural ecosystem with alpha and beta emitters, which were determined by the screening method for environmental monitoring.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Analiza trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom ekosistemu, Analysis of Trend of the Gross Alpha and Gross Beta Activity in the Agricultural Ecosystem",
pages = "86-92",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12170"
}

Sarap, N., Janković, M., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Stanić, V.,& Jelić, I.. (2023). Analiza trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom ekosistemu. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 86-92.
https://hdl.handle.net/21.15107/rcub_vinar_12170

Sarap N, Janković M, Krneta Nikolić J, Rajačić M, Vukanac I, Stanić V, Jelić I. Analiza trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom ekosistemu. in 32. simpozijum DZZSCG : zbornik radova. 2023;:86-92.
https://hdl.handle.net/21.15107/rcub_vinar_12170 .

Sarap, Nataša, Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Stanić, Vojislav, Jelić, Ivana, "Analiza trenda promene ukupne alfa i ukupne beta aktivnosti u poljoprivrednom ekosistemu" in 32. simpozijum DZZSCG : zbornik radova (2023):86-92,
https://hdl.handle.net/21.15107/rcub_vinar_12170 .

TY  - CONF
AU  - Krneta Nikolić, Jelena
AU  - Lučić, Marija
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Sarap, Nataša
AU  - Janković, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12172
AB  - U radu su prikazani rezultati ispitivanja sadržaja prirodnih radionuklida i 137Cs u 15 uzoraka lekovitog bilja sa teritorije Republike Srbije. Uzorci su nabavljeni u Institutu za istraživanje lekovitog bilja “Dr Josif Pančić” u Beogradu. Izabrani su tako da sadrže različite delove (koren, stablo ili cvet) istih biljnih vrsta da bi se uočila eventualna različita distribucija radionuklida u različitim delovima biljke. Prirodni radionuklidi 238U, 235U i 210Pb su bili ispod MDC u svim uzorcima, 226Ra je detektovan u 3, 137Cs u 5 uzoraka a 232Th u jednom uzorku. Na osnovu dobijenih rezultata, izračunata je doza ingestijom koju bi primila osoba koja pije čaj spravljen od ispitivanog lekovitog bilja, pod pretpostavkom da popije 0,2 L čaja dnevno. Ustanovljeno je da se doza ingestijom kreće u rasponu od 13,8 μSv do 32,3 μSv za 137Cs i 79,7 μSv za 226Ra, dakle daleko manje od doze od 0,1 mSv/god propisane Pravilnikom Sl. glasnik 36/18.
AB  - This manuscript presents the results of measurement of naturaly occurring radionuclides and 137Cs in 15 samples of medicinal herbes originating at the theritory of Republic of Serbia. The samples were procured from the Institute for research of medicinal herbes “Dr Josif Pančić” in Belgrade. They were chosen so that they contain various parts (roots, stem or flower) of the same plant in order to assess different distribution of the radionuclides in various plant parts. The aactivity concentration of naturaly occurring radionuclides 238U, 235U i 210Pb was below the minimal detectable concentration (MDC), 226Ra was detected in 3, 137Cs in 5 and 232Th in one sample. Based on the obtained values, ingestion dose was calculated taking into account that a person drinks 0.2L of tea per day. It is found that the ingestion dose is in the range of 13,8 μSv to 32,3 μSv for 137Cs and 79,7 μSv for 226Ra. This is well below the limit of 0.1 mSv/year recommended by the Rulebook Official Gasette 36/18.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Sadržaj radionuklida i doza ingestijom za čajeve spravljene od lekovitog bilja sa teritorije Republike Srbije
T1  - Radionuclide Content and Ingestion Dose for Tea Made From Medicinal Herbes From the Theritory of Republic of Serbia
SP  - 116
EP  - 121
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12172
ER  - 

@conference{
author = "Krneta Nikolić, Jelena and Lučić, Marija and Rajačić, Milica and Vukanac, Ivana and Sarap, Nataša and Janković, Marija",
year = "2023",
abstract = "U radu su prikazani rezultati ispitivanja sadržaja prirodnih radionuklida i 137Cs u 15 uzoraka lekovitog bilja sa teritorije Republike Srbije. Uzorci su nabavljeni u Institutu za istraživanje lekovitog bilja “Dr Josif Pančić” u Beogradu. Izabrani su tako da sadrže različite delove (koren, stablo ili cvet) istih biljnih vrsta da bi se uočila eventualna različita distribucija radionuklida u različitim delovima biljke. Prirodni radionuklidi 238U, 235U i 210Pb su bili ispod MDC u svim uzorcima, 226Ra je detektovan u 3, 137Cs u 5 uzoraka a 232Th u jednom uzorku. Na osnovu dobijenih rezultata, izračunata je doza ingestijom koju bi primila osoba koja pije čaj spravljen od ispitivanog lekovitog bilja, pod pretpostavkom da popije 0,2 L čaja dnevno. Ustanovljeno je da se doza ingestijom kreće u rasponu od 13,8 μSv do 32,3 μSv za 137Cs i 79,7 μSv za 226Ra, dakle daleko manje od doze od 0,1 mSv/god propisane Pravilnikom Sl. glasnik 36/18., This manuscript presents the results of measurement of naturaly occurring radionuclides and 137Cs in 15 samples of medicinal herbes originating at the theritory of Republic of Serbia. The samples were procured from the Institute for research of medicinal herbes “Dr Josif Pančić” in Belgrade. They were chosen so that they contain various parts (roots, stem or flower) of the same plant in order to assess different distribution of the radionuclides in various plant parts. The aactivity concentration of naturaly occurring radionuclides 238U, 235U i 210Pb was below the minimal detectable concentration (MDC), 226Ra was detected in 3, 137Cs in 5 and 232Th in one sample. Based on the obtained values, ingestion dose was calculated taking into account that a person drinks 0.2L of tea per day. It is found that the ingestion dose is in the range of 13,8 μSv to 32,3 μSv for 137Cs and 79,7 μSv for 226Ra. This is well below the limit of 0.1 mSv/year recommended by the Rulebook Official Gasette 36/18.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Sadržaj radionuklida i doza ingestijom za čajeve spravljene od lekovitog bilja sa teritorije Republike Srbije, Radionuclide Content and Ingestion Dose for Tea Made From Medicinal Herbes From the Theritory of Republic of Serbia",
pages = "116-121",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12172"
}

Krneta Nikolić, J., Lučić, M., Rajačić, M., Vukanac, I., Sarap, N.,& Janković, M.. (2023). Sadržaj radionuklida i doza ingestijom za čajeve spravljene od lekovitog bilja sa teritorije Republike Srbije. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 116-121.
https://hdl.handle.net/21.15107/rcub_vinar_12172

Krneta Nikolić J, Lučić M, Rajačić M, Vukanac I, Sarap N, Janković M. Sadržaj radionuklida i doza ingestijom za čajeve spravljene od lekovitog bilja sa teritorije Republike Srbije. in 32. simpozijum DZZSCG : zbornik radova. 2023;:116-121.
https://hdl.handle.net/21.15107/rcub_vinar_12172 .

Krneta Nikolić, Jelena, Lučić, Marija, Rajačić, Milica, Vukanac, Ivana, Sarap, Nataša, Janković, Marija, "Sadržaj radionuklida i doza ingestijom za čajeve spravljene od lekovitog bilja sa teritorije Republike Srbije" in 32. simpozijum DZZSCG : zbornik radova (2023):116-121,
https://hdl.handle.net/21.15107/rcub_vinar_12172 .

TY  - CONF
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Krneta Nikolić, Jelena
AU  - Sarap, Nataša
AU  - Janković, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12175
AB  - Pitanje kojim se ovaj rad bavi je: “Kako predstaviti “dan uzorkovanja” kod vremenski kompozitnih uzoraka?”. Izbor referentnog datuma koji će predstaviti “dan uzorkovanja” je stvar dogovora, ali rezultati aktivnosti ispitanog radionuklida dati na različite referentne datume suštinski nisu međusobno poredivi. Cilj je bio da se ispita na koji dan korigovana izmerena aktivnost (Ar) najpribližnije određuje ukupnu dnevnu aktivnost svih uzorka na dan njihovog uzorkovanja (Au). Ispostavlja se da dan kada je razlika ove dve aktivnosi (Δ) minimalna zavisi od više faktora: ukupne vrednosti dnevnih aktivnosti (Au), vremenske raspodele dnevnih vrednosti (homogenost), dužine perioda sakupljanja (D) i vremena poluraspada posmatranog radionuklida (T1/2). Shodno tome, u radu je praćeno kako promena navedenih parametara utiče na promenu optimalnog referentnog datuma za koji je vrednost Δ minimalna (dan r). Rezultati pokazuju izvestan nivo pravilnosti kod homogenih uzoraka, međutim nehomogenost dnevnih aktivnosti, što je slučaj u realnosti, ima veliki uticaj na promenu optimalnog referentnog datuma, ali za sada bez utvrđenih pravilnosti.
AB  - The question that this paper deals with is: "How to present the "sampling day" in temporal composite samples?". The choice of the reference data that will represent the "sampling day" is a matter of agreement, but the results of the activity of the tested radionuclide given on different reference dates are essentially not mutually comparable. The aim of the paper was to examine on which day the corrected measured activity (Ar) most closely determines the total daily activity of all samples on the day of their sampling (Au). It turns out that the day when the difference between these two activities (Δ) is minimal depends on several factors: the total value of daily activities (Au), the temporal distribution of daily values (homogeneity), the length of the collection period (D) and the half-life of the observed radionuclide (T1/2 ). Accordingly, the influence of the variation of mentioned parameters on the change of the optimal reference date for which the value of Δ is minimal (day r) is presented in this paper. The results show some level of regularity in homogeneous samples, however, the inhomogeneity of daily activities, which is the case in reality, has a great influence on the change of the optimal reference date, but for now, without established consistency.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Izbor referentnog datuma za prezentovanje aktivnosti radionuklida u vremenski kompozitnim uzorcima
T1  - Selection of Reference Date for Presentation of Radionuclide Activity in Time-Composite Samples
SP  - 137
EP  - 142
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12175
ER  - 

@conference{
author = "Rajačić, Milica and Vukanac, Ivana and Krneta Nikolić, Jelena and Sarap, Nataša and Janković, Marija",
year = "2023",
abstract = "Pitanje kojim se ovaj rad bavi je: “Kako predstaviti “dan uzorkovanja” kod vremenski kompozitnih uzoraka?”. Izbor referentnog datuma koji će predstaviti “dan uzorkovanja” je stvar dogovora, ali rezultati aktivnosti ispitanog radionuklida dati na različite referentne datume suštinski nisu međusobno poredivi. Cilj je bio da se ispita na koji dan korigovana izmerena aktivnost (Ar) najpribližnije određuje ukupnu dnevnu aktivnost svih uzorka na dan njihovog uzorkovanja (Au). Ispostavlja se da dan kada je razlika ove dve aktivnosi (Δ) minimalna zavisi od više faktora: ukupne vrednosti dnevnih aktivnosti (Au), vremenske raspodele dnevnih vrednosti (homogenost), dužine perioda sakupljanja (D) i vremena poluraspada posmatranog radionuklida (T1/2). Shodno tome, u radu je praćeno kako promena navedenih parametara utiče na promenu optimalnog referentnog datuma za koji je vrednost Δ minimalna (dan r). Rezultati pokazuju izvestan nivo pravilnosti kod homogenih uzoraka, međutim nehomogenost dnevnih aktivnosti, što je slučaj u realnosti, ima veliki uticaj na promenu optimalnog referentnog datuma, ali za sada bez utvrđenih pravilnosti., The question that this paper deals with is: "How to present the "sampling day" in temporal composite samples?". The choice of the reference data that will represent the "sampling day" is a matter of agreement, but the results of the activity of the tested radionuclide given on different reference dates are essentially not mutually comparable. The aim of the paper was to examine on which day the corrected measured activity (Ar) most closely determines the total daily activity of all samples on the day of their sampling (Au). It turns out that the day when the difference between these two activities (Δ) is minimal depends on several factors: the total value of daily activities (Au), the temporal distribution of daily values (homogeneity), the length of the collection period (D) and the half-life of the observed radionuclide (T1/2 ). Accordingly, the influence of the variation of mentioned parameters on the change of the optimal reference date for which the value of Δ is minimal (day r) is presented in this paper. The results show some level of regularity in homogeneous samples, however, the inhomogeneity of daily activities, which is the case in reality, has a great influence on the change of the optimal reference date, but for now, without established consistency.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Izbor referentnog datuma za prezentovanje aktivnosti radionuklida u vremenski kompozitnim uzorcima, Selection of Reference Date for Presentation of Radionuclide Activity in Time-Composite Samples",
pages = "137-142",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12175"
}

Rajačić, M., Vukanac, I., Krneta Nikolić, J., Sarap, N.,& Janković, M.. (2023). Izbor referentnog datuma za prezentovanje aktivnosti radionuklida u vremenski kompozitnim uzorcima. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 137-142.
https://hdl.handle.net/21.15107/rcub_vinar_12175

Rajačić M, Vukanac I, Krneta Nikolić J, Sarap N, Janković M. Izbor referentnog datuma za prezentovanje aktivnosti radionuklida u vremenski kompozitnim uzorcima. in 32. simpozijum DZZSCG : zbornik radova. 2023;:137-142.
https://hdl.handle.net/21.15107/rcub_vinar_12175 .

Rajačić, Milica, Vukanac, Ivana, Krneta Nikolić, Jelena, Sarap, Nataša, Janković, Marija, "Izbor referentnog datuma za prezentovanje aktivnosti radionuklida u vremenski kompozitnim uzorcima" in 32. simpozijum DZZSCG : zbornik radova (2023):137-142,
https://hdl.handle.net/21.15107/rcub_vinar_12175 .

TY  - CONF
AU  - Vukanac, Ivana
AU  - Đurašević, Mirjana
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Sarap, Nataša
AU  - Janković, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12182
AB  - Rutinska merenja uzoraka iz životne sredine gama spektrometrijom zahtevaju pripremu radioaktivnih standarda različitih matriksa. Radioaktivni standardi se koriste u svim fazama procesa merenja, uključujući validaciju metoda, kalibraciju i kontrolu kvaliteta. U Laboratoriji za Zaštitu od zračenja i zaštitu životne sredine, Instituta za nuklearne nauke „Vinča” radioaktivni standardi se pripremaju korišćenjem sertifikovanog radioaktivnog rastvora različitih radionuklida. U ovom radu je opisan postupak pripreme radioaktivnih standarda koji obuhvata izbor matriksa, pripremu i spajkovanje pripremljenih matriksa sa sertifikovanim radioaktivnim rastvorom, proveru homogenosti, pakovanje standarda u odgovarajuću geometriju i njihova merenja u kontakt geometriji na gama spektrometru. Za sve materijale matriksa pripremljeni su i uzorci „blenka“ i mereni u istoj geometriji kao i kalibracioni standardi. Nakon analize snimljenih spektara, fitovanjem datih tačaka efikasnosti dobijene su kalibracione krive. U ovom radu dat je i opis budžeta merne nesigurnosti za aktivnosti radionuklida prisutnih u pripremljenim standardima.
AB  - The routine measurements of environmental samples using gamma-ray spectrometry indicate the needs for preparing radioactive standards for various matrices. The radioactive standards are used in all phases of the measurement process, including method validation, calibration and quality control. In the Radiation and Environmental Protection Departmen in the "Vinča" Institute of Nuclear Sciences, radioactive standards are prepared using a certified radioactive solution of mixed radionuclides. The procedure for radioactive standards preparation, which includes matrix selection and preparation, spiking with a certified radioactive solution, homogeneity check, matrix packing in the appropriate geometry and measurement of the prepared standards using a gamma spectrometer, is described in this paper. For all matrix materials, "blank" samples were prepared in the same manner as the standard materials and measured in the same geometry as the calibration samples. After the analysis of recorded spectra and evaluation of the obtained data for efficiency at given energies, calibration curves were obtained by fitting. The uncertainty budget of the activity for all radionuclides present in the prepared standards is also defined in this paper.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 32. simpozijum DZZSCG : zbornik radova
T1  - Priprema radioaktivnih standarda za kalibraciju gama spektrometara
T1  - Preparation of Radioactive Standards for Calibration of Gamma Spectrometer
SP  - 272
EP  - 279
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12182
ER  - 

@conference{
author = "Vukanac, Ivana and Đurašević, Mirjana and Rajačić, Milica and Krneta Nikolić, Jelena and Sarap, Nataša and Janković, Marija",
year = "2023",
abstract = "Rutinska merenja uzoraka iz životne sredine gama spektrometrijom zahtevaju pripremu radioaktivnih standarda različitih matriksa. Radioaktivni standardi se koriste u svim fazama procesa merenja, uključujući validaciju metoda, kalibraciju i kontrolu kvaliteta. U Laboratoriji za Zaštitu od zračenja i zaštitu životne sredine, Instituta za nuklearne nauke „Vinča” radioaktivni standardi se pripremaju korišćenjem sertifikovanog radioaktivnog rastvora različitih radionuklida. U ovom radu je opisan postupak pripreme radioaktivnih standarda koji obuhvata izbor matriksa, pripremu i spajkovanje pripremljenih matriksa sa sertifikovanim radioaktivnim rastvorom, proveru homogenosti, pakovanje standarda u odgovarajuću geometriju i njihova merenja u kontakt geometriji na gama spektrometru. Za sve materijale matriksa pripremljeni su i uzorci „blenka“ i mereni u istoj geometriji kao i kalibracioni standardi. Nakon analize snimljenih spektara, fitovanjem datih tačaka efikasnosti dobijene su kalibracione krive. U ovom radu dat je i opis budžeta merne nesigurnosti za aktivnosti radionuklida prisutnih u pripremljenim standardima., The routine measurements of environmental samples using gamma-ray spectrometry indicate the needs for preparing radioactive standards for various matrices. The radioactive standards are used in all phases of the measurement process, including method validation, calibration and quality control. In the Radiation and Environmental Protection Departmen in the "Vinča" Institute of Nuclear Sciences, radioactive standards are prepared using a certified radioactive solution of mixed radionuclides. The procedure for radioactive standards preparation, which includes matrix selection and preparation, spiking with a certified radioactive solution, homogeneity check, matrix packing in the appropriate geometry and measurement of the prepared standards using a gamma spectrometer, is described in this paper. For all matrix materials, "blank" samples were prepared in the same manner as the standard materials and measured in the same geometry as the calibration samples. After the analysis of recorded spectra and evaluation of the obtained data for efficiency at given energies, calibration curves were obtained by fitting. The uncertainty budget of the activity for all radionuclides present in the prepared standards is also defined in this paper.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "32. simpozijum DZZSCG : zbornik radova",
title = "Priprema radioaktivnih standarda za kalibraciju gama spektrometara, Preparation of Radioactive Standards for Calibration of Gamma Spectrometer",
pages = "272-279",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12182"
}

Vukanac, I., Đurašević, M., Rajačić, M., Krneta Nikolić, J., Sarap, N.,& Janković, M.. (2023). Priprema radioaktivnih standarda za kalibraciju gama spektrometara. in 32. simpozijum DZZSCG : zbornik radova
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 272-279.
https://hdl.handle.net/21.15107/rcub_vinar_12182

Vukanac I, Đurašević M, Rajačić M, Krneta Nikolić J, Sarap N, Janković M. Priprema radioaktivnih standarda za kalibraciju gama spektrometara. in 32. simpozijum DZZSCG : zbornik radova. 2023;:272-279.
https://hdl.handle.net/21.15107/rcub_vinar_12182 .

Vukanac, Ivana, Đurašević, Mirjana, Rajačić, Milica, Krneta Nikolić, Jelena, Sarap, Nataša, Janković, Marija, "Priprema radioaktivnih standarda za kalibraciju gama spektrometara" in 32. simpozijum DZZSCG : zbornik radova (2023):272-279,
https://hdl.handle.net/21.15107/rcub_vinar_12182 .

TY  - CONF
AU  - Sarap, Nataša
AU  - Dejković, Stefana
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Stanić, Vojislav
AU  - Rajačić, Milica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12308
AB  - In the Radiation and Environmental Protection Department, Vinča Institute of Nuclear Sciences, the validated radiochemical analytical method for 90Sr determination in environmental samples is used. The Laboratory for Radiation Measurements within mentioned Department is accredited according to ISO/IEC 17025. The activity of 90Sr is determined indirectly, by beta counting of its daughter product 90Y, and after established radioactive equilibrium during 18 days from the moment of 90Y radiochemical separation. Beta spectrometry by gas flow proportional counter Thermo Eberline FHT 770T is used for detection of 90Sr activity in investigated samples. In order to assure the reliability of the measurement results in accordance with Standard ISO/IEC 17025:2017, quality assurance and quality control (QA/QC) corresponding procedures need to be applied. For this purpose, activities ought to be planned in a systematic manner as described in the quality control documentation. The efficiency calibration of the detection system needs to be performed in a proper manner. The calibration of the detector for beta counting is performed using the Sr-90 certified radioactive standard point source (9031-OL-335/11, produced by Czech Metrology Institute) which is traceable to Bureau International des Poids et Mesures (BIPM). As lowlevel measurements require strict QA/QC requests, the accuracy and reproducibility of measurement systems must be verified periodically. A regular internal quality control of the gas flow proportional counter is performed once a week. Quality control activities include the background measurement and checking of efficiency using adequate radioactive standard source. The measurement values are recorded and verified if they are within the acceptance limits. The obtained results together with acceptance limits during the period of 3 months are graphically presented in control charts. The acceptance limits are set to be ±2σ and ±3σ in relation to the calculated mean value and standard deviation. The results of QC verification within ±2σ are considered to be satisfactory, those within ±3σ are warning, while those that exceeding ±3σ indicate that there is a problem with the measurement system. Consequently, the analysis of causes and design, as well as the application of corrective measures is needed.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Quality control of gas flow proportional counter for beta spectrometric determination of 90Sr
SP  - 25
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12308
ER  - 

@conference{
author = "Sarap, Nataša and Dejković, Stefana and Janković, Marija and Krneta Nikolić, Jelena and Stanić, Vojislav and Rajačić, Milica",
year = "2023",
abstract = "In the Radiation and Environmental Protection Department, Vinča Institute of Nuclear Sciences, the validated radiochemical analytical method for 90Sr determination in environmental samples is used. The Laboratory for Radiation Measurements within mentioned Department is accredited according to ISO/IEC 17025. The activity of 90Sr is determined indirectly, by beta counting of its daughter product 90Y, and after established radioactive equilibrium during 18 days from the moment of 90Y radiochemical separation. Beta spectrometry by gas flow proportional counter Thermo Eberline FHT 770T is used for detection of 90Sr activity in investigated samples. In order to assure the reliability of the measurement results in accordance with Standard ISO/IEC 17025:2017, quality assurance and quality control (QA/QC) corresponding procedures need to be applied. For this purpose, activities ought to be planned in a systematic manner as described in the quality control documentation. The efficiency calibration of the detection system needs to be performed in a proper manner. The calibration of the detector for beta counting is performed using the Sr-90 certified radioactive standard point source (9031-OL-335/11, produced by Czech Metrology Institute) which is traceable to Bureau International des Poids et Mesures (BIPM). As lowlevel measurements require strict QA/QC requests, the accuracy and reproducibility of measurement systems must be verified periodically. A regular internal quality control of the gas flow proportional counter is performed once a week. Quality control activities include the background measurement and checking of efficiency using adequate radioactive standard source. The measurement values are recorded and verified if they are within the acceptance limits. The obtained results together with acceptance limits during the period of 3 months are graphically presented in control charts. The acceptance limits are set to be ±2σ and ±3σ in relation to the calculated mean value and standard deviation. The results of QC verification within ±2σ are considered to be satisfactory, those within ±3σ are warning, while those that exceeding ±3σ indicate that there is a problem with the measurement system. Consequently, the analysis of causes and design, as well as the application of corrective measures is needed.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Quality control of gas flow proportional counter for beta spectrometric determination of 90Sr",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12308"
}

Sarap, N., Dejković, S., Janković, M., Krneta Nikolić, J., Stanić, V.,& Rajačić, M.. (2023). Quality control of gas flow proportional counter for beta spectrometric determination of 90Sr. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 25-25.
https://hdl.handle.net/21.15107/rcub_vinar_12308

Sarap N, Dejković S, Janković M, Krneta Nikolić J, Stanić V, Rajačić M. Quality control of gas flow proportional counter for beta spectrometric determination of 90Sr. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:25-25.
https://hdl.handle.net/21.15107/rcub_vinar_12308 .

Sarap, Nataša, Dejković, Stefana, Janković, Marija, Krneta Nikolić, Jelena, Stanić, Vojislav, Rajačić, Milica, "Quality control of gas flow proportional counter for beta spectrometric determination of 90Sr" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):25-25,
https://hdl.handle.net/21.15107/rcub_vinar_12308 .

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Waisi, Hadi
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Veljković, Filip
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12358
AB  - This paper presents the results for gross alpha and gross beta activity in leaves samples: Fig (Ficus carica), Vine (Vitis vinifera L.), and Apricot (Prunus armeniaca). Samples were collected in Iraq (Sulaymaniyah, Kurdistan region), and in the Serbia (Belgrade), in the summer 2018. The analysis was done in dried and milled samples as well as in the annealed samples, using gas flow proportional counter. Determination of gross alpha and gross beta activity presents rapid method, essential for the analysis of radioactivity in environmental samples. The gross alpha activity is defines as the total activity of alpha emitters, and originates from the decay chains of 238U and 232Th, which quantity depends on the geological and geographical formation of natural radionuclides. The main contributor to the gross beta activity is natural long-lived isotope 40K, as well as 210Pb, 228Ra. The gross beta measurements also include a contribution from anthropogenic radionuclides 137Cs and 90Sr. Radionuclides that emitting low-energy beta radiation (3 H and gaseous or volatile radionuclide such as iodine) cannot be detected by gross beta activity measurements.
PB  - Belgrade : University „Union-Nikola Tesla”
C3  - 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
T1  - Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)
SP  - 309
EP  - 314
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12358
ER  - 

@conference{
author = "Janković, Marija and Sarap, Nataša and Waisi, Hadi and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Veljković, Filip and Janković, Bojan",
year = "2023",
abstract = "This paper presents the results for gross alpha and gross beta activity in leaves samples: Fig (Ficus carica), Vine (Vitis vinifera L.), and Apricot (Prunus armeniaca). Samples were collected in Iraq (Sulaymaniyah, Kurdistan region), and in the Serbia (Belgrade), in the summer 2018. The analysis was done in dried and milled samples as well as in the annealed samples, using gas flow proportional counter. Determination of gross alpha and gross beta activity presents rapid method, essential for the analysis of radioactivity in environmental samples. The gross alpha activity is defines as the total activity of alpha emitters, and originates from the decay chains of 238U and 232Th, which quantity depends on the geological and geographical formation of natural radionuclides. The main contributor to the gross beta activity is natural long-lived isotope 40K, as well as 210Pb, 228Ra. The gross beta measurements also include a contribution from anthropogenic radionuclides 137Cs and 90Sr. Radionuclides that emitting low-energy beta radiation (3 H and gaseous or volatile radionuclide such as iodine) cannot be detected by gross beta activity measurements.",
publisher = "Belgrade : University „Union-Nikola Tesla”",
journal = "3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings",
title = "Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)",
pages = "309-314",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12358"
}

Janković, M., Sarap, N., Waisi, H., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Veljković, F.,& Janković, B.. (2023). Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine). in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
Belgrade : University „Union-Nikola Tesla”., 309-314.
https://hdl.handle.net/21.15107/rcub_vinar_12358

Janković M, Sarap N, Waisi H, Krneta Nikolić J, Rajačić M, Vukanac I, Veljković F, Janković B. Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine). in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings. 2023;:309-314.
https://hdl.handle.net/21.15107/rcub_vinar_12358 .

Janković, Marija, Sarap, Nataša, Waisi, Hadi, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Veljković, Filip, Janković, Bojan, "Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)" in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings (2023):309-314,
https://hdl.handle.net/21.15107/rcub_vinar_12358 .

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12359
AB  - Determination of specific activity concentration of radioisotopes in environmental samples can be used to assess the long-term kinetics of the decline of radioisotopes. Based on the obtained activity concentrations of tritium in the Danube, the effective ecological half-life is estimated. Assuming that the Danube in Belgrade is not affected by nuclear power plants, even though it is positioned downstream of the Paks Nuclear Power Plant in Hungary, a slow decline of tritium was observed. The effective ecological half-life of tritium was also determined after correction by subtracting its components originating from cosmic radiation and the atmospheric transfer from nuclear facilities worldwide.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Effective ecological half-life of tritium in Danube - Kinetic approach
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12359
ER  - 

@conference{
author = "Janković, Marija and Sarap, Nataša and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "Determination of specific activity concentration of radioisotopes in environmental samples can be used to assess the long-term kinetics of the decline of radioisotopes. Based on the obtained activity concentrations of tritium in the Danube, the effective ecological half-life is estimated. Assuming that the Danube in Belgrade is not affected by nuclear power plants, even though it is positioned downstream of the Paks Nuclear Power Plant in Hungary, a slow decline of tritium was observed. The effective ecological half-life of tritium was also determined after correction by subtracting its components originating from cosmic radiation and the atmospheric transfer from nuclear facilities worldwide.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Effective ecological half-life of tritium in Danube - Kinetic approach",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12359"
}

Janković, M., Sarap, N., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Effective ecological half-life of tritium in Danube - Kinetic approach. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12359

Janković M, Sarap N, Krneta Nikolić J, Rajačić M, Vukanac I, Šljivić-Ivanović M, Janković B. Effective ecological half-life of tritium in Danube - Kinetic approach. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12359 .

Janković, Marija, Sarap, Nataša, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Effective ecological half-life of tritium in Danube - Kinetic approach" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12359 .

TY  - CONF
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Jelić, Ivana
AU  - Waisi, Hadi
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12574
AB  - This paper presents distribution and seasonal variations of tritium, radioactive isotope of hydrogen, in Sava River in Belgrade. Tritium besides its natural origin also has an artificial origin, through human activity including the operation of nuclear power plants, nuclear weapons manufacturing and atomic bomb tests. Knowing the concentration of tritium in the Sava River in Belgrade is important because it is located downstream from the Krško Nuclear Power Plant in Slovenia. Analysis of tritium concentrations in surface water samples were done in composite monthly samples during 2017-2022. Tritium activity was determined by liquid scintillation spectrometer using electrolytic enrichment. Seasonal variations were estimated by determination of average monthly concentrations and seasonal indices.
PB  - Belgrade : University „Union-Nikola Tesla”
C3  - 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
T1  - Seasonal variations of 3H in Sava river
SP  - 81
EP  - 87
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12574
ER  - 

@conference{
author = "Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Šljivić-Ivanović, Marija and Jelić, Ivana and Waisi, Hadi",
year = "2023",
abstract = "This paper presents distribution and seasonal variations of tritium, radioactive isotope of hydrogen, in Sava River in Belgrade. Tritium besides its natural origin also has an artificial origin, through human activity including the operation of nuclear power plants, nuclear weapons manufacturing and atomic bomb tests. Knowing the concentration of tritium in the Sava River in Belgrade is important because it is located downstream from the Krško Nuclear Power Plant in Slovenia. Analysis of tritium concentrations in surface water samples were done in composite monthly samples during 2017-2022. Tritium activity was determined by liquid scintillation spectrometer using electrolytic enrichment. Seasonal variations were estimated by determination of average monthly concentrations and seasonal indices.",
publisher = "Belgrade : University „Union-Nikola Tesla”",
journal = "3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings",
title = "Seasonal variations of 3H in Sava river",
pages = "81-87",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12574"
}

Janković, M., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Šljivić-Ivanović, M., Jelić, I.,& Waisi, H.. (2023). Seasonal variations of 3H in Sava river. in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
Belgrade : University „Union-Nikola Tesla”., 81-87.
https://hdl.handle.net/21.15107/rcub_vinar_12574

Janković M, Krneta Nikolić J, Rajačić M, Vukanac I, Šljivić-Ivanović M, Jelić I, Waisi H. Seasonal variations of 3H in Sava river. in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings. 2023;:81-87.
https://hdl.handle.net/21.15107/rcub_vinar_12574 .

Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Šljivić-Ivanović, Marija, Jelić, Ivana, Waisi, Hadi, "Seasonal variations of 3H in Sava river" in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings (2023):81-87,
https://hdl.handle.net/21.15107/rcub_vinar_12574 .

TY  - CONF
AU  - Krneta Nikolić, Jelena
AU  - Janković, Marija
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Sarap, Nataša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12577
AB  - As a part of regular activities of the accredited laboratory, the Laboratory for Radiation Measurements of the Radiation and Environmental Protection Department, Institute Vinča, every year takes part in the proficiency tests organized by IAEA. This year, within the framework of IAEA – TERC – 2022 – 01/02 Proficiency Test, one of the requests was to measure the simulated surface contamination using the instrument that are at the disposal in the participant laboratories. The results should be reported in the units of counts/s/cm2 in order to be comparable. In this paper, the measurement method and subsequent specific calculations for the simulated surface contamination are explained and the results of the proficiency test stated and discussed.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Simulated Surface Contamination Measurement for the IAEA-TERC-2022-01/02 Proficiency Test
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12577
ER  - 

@conference{
author = "Krneta Nikolić, Jelena and Janković, Marija and Rajačić, Milica and Vukanac, Ivana and Sarap, Nataša",
year = "2023",
abstract = "As a part of regular activities of the accredited laboratory, the Laboratory for Radiation Measurements of the Radiation and Environmental Protection Department, Institute Vinča, every year takes part in the proficiency tests organized by IAEA. This year, within the framework of IAEA – TERC – 2022 – 01/02 Proficiency Test, one of the requests was to measure the simulated surface contamination using the instrument that are at the disposal in the participant laboratories. The results should be reported in the units of counts/s/cm2 in order to be comparable. In this paper, the measurement method and subsequent specific calculations for the simulated surface contamination are explained and the results of the proficiency test stated and discussed.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Simulated Surface Contamination Measurement for the IAEA-TERC-2022-01/02 Proficiency Test",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12577"
}

Krneta Nikolić, J., Janković, M., Rajačić, M., Vukanac, I.,& Sarap, N.. (2023). Simulated Surface Contamination Measurement for the IAEA-TERC-2022-01/02 Proficiency Test. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12577

Krneta Nikolić J, Janković M, Rajačić M, Vukanac I, Sarap N. Simulated Surface Contamination Measurement for the IAEA-TERC-2022-01/02 Proficiency Test. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12577 .

Krneta Nikolić, Jelena, Janković, Marija, Rajačić, Milica, Vukanac, Ivana, Sarap, Nataša, "Simulated Surface Contamination Measurement for the IAEA-TERC-2022-01/02 Proficiency Test" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12577 .

TY  - CONF
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Sarap, Nataša
AU  - Manić, Nebojša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12589
AB  - In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.
PB  - Budapest : Akadémiai Kiadó
C3  - JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
T1  - Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis
SP  - 263
EP  - 263
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12589
ER  - 

@conference{
author = "Janković, Bojan and Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Sarap, Nataša and Manić, Nebojša",
year = "2023",
abstract = "In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.",
publisher = "Budapest : Akadémiai Kiadó",
journal = "JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts",
title = "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis",
pages = "263-263",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12589"
}

Janković, B., Janković, M., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Sarap, N.,& Manić, N.. (2023). Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
Budapest : Akadémiai Kiadó., 263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589

Janković B, Janković M, Krneta Nikolić J, Rajačić M, Vukanac I, Sarap N, Manić N. Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts. 2023;:263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589 .

Janković, Bojan, Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Sarap, Nataša, Manić, Nebojša, "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis" in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts (2023):263-263,
https://hdl.handle.net/21.15107/rcub_vinar_12589 .

TY  - CONF
AU  - Vukanac, Ivana
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Stanković Petrović, Jelena
AU  - Kojić, Andrea
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12590
AB  - Measurement of radon (222Rn) concentration using charcoal filters according to the EPA 520/5-87-005 method is performed in Radiation and Environment Protection Department of Vinča Institute for Nuclear Sciences on NaI scintillation detectors. Concentration of radon adsorbed on active charcoal is determined indirectly, by gamma spectrometry of its daughter products via their gamma peaks at 295 keV, 352 keV (214Pb) and 609 keV (214Bi). In order to assure the reliability of the measurement results, and in accordance with Standard ISO 17025/17 quality control and quality assurance (QA/QC) procedures needs to be applied. Related activities ought to be planned, described in the quality control documentation, performed in a systematic manner, recorded and reviewed. First, the energy and efficiency calibration of the detection system needs to be performed in a proper manner. The NaI scintillation spectrometer is internally calibrated using the certified radioactive 226Ra standard in charcoal matrix and in the geometry identical to the measurement geometry, produced by Czech Metrology Institute and traceable to Bureau International des Poids et Mesures (BIPM). As defined in laboratory’s procedures a regular quality control of the NaI scintillation detector is performed once a week. Quality control activities include the background measurement and measurement of adequate reference material. Gross background count rate in the energy region of interest is used to verify that the detector and shield have not been contaminated and that there is no significant variation of the background. Reference material used is the soil sample with known content of 226Ra. Gross count rate in the reference material spectrum is used to check the energy and efficiency calibration. These values are recorded and verified if they are within the acceptance limits. Obtained results, together with acceptance limits, for a certain period (one year usually) is graphically presented in the control charts. The acceptance limits for background count rate and reference material gross count rate in the energy region of interest are defined according to the statistical analysis of the data from previous QC period. The mean and standard deviation is calculated and the acceptance limits are set to be ±2σ and ±3σ. QC measurement results falling between ±2σ are considered to be satisfactory, while those falling inside ±3σ are warning. QC measurement results exceeding ±3σ indicate that there is a problem with the measurement system and that analysis of causes and design and application of corrective measures are needed. Analysing the control charts for the previous QC period (year 2022) showed that the controlled parameters were within the defined limits of acceptance. Occasional discrepancies, mainly due to background variation, were minor and were addressed immediately. Background variation was treated simply by repeated measurements after additional ventilation of the measurement laboratory
PB  - Niš : Sievert Association
C3  - RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
T1  - Quality control of NaI scintillation detector for gamma spectrometric determination of radon concentration
SP  - 32
EP  - 32
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12590
ER  - 

@conference{
author = "Vukanac, Ivana and Rajačić, Milica and Krneta Nikolić, Jelena and Janković, Marija and Sarap, Nataša and Stanković Petrović, Jelena and Kojić, Andrea",
year = "2023",
abstract = "Measurement of radon (222Rn) concentration using charcoal filters according to the EPA 520/5-87-005 method is performed in Radiation and Environment Protection Department of Vinča Institute for Nuclear Sciences on NaI scintillation detectors. Concentration of radon adsorbed on active charcoal is determined indirectly, by gamma spectrometry of its daughter products via their gamma peaks at 295 keV, 352 keV (214Pb) and 609 keV (214Bi). In order to assure the reliability of the measurement results, and in accordance with Standard ISO 17025/17 quality control and quality assurance (QA/QC) procedures needs to be applied. Related activities ought to be planned, described in the quality control documentation, performed in a systematic manner, recorded and reviewed. First, the energy and efficiency calibration of the detection system needs to be performed in a proper manner. The NaI scintillation spectrometer is internally calibrated using the certified radioactive 226Ra standard in charcoal matrix and in the geometry identical to the measurement geometry, produced by Czech Metrology Institute and traceable to Bureau International des Poids et Mesures (BIPM). As defined in laboratory’s procedures a regular quality control of the NaI scintillation detector is performed once a week. Quality control activities include the background measurement and measurement of adequate reference material. Gross background count rate in the energy region of interest is used to verify that the detector and shield have not been contaminated and that there is no significant variation of the background. Reference material used is the soil sample with known content of 226Ra. Gross count rate in the reference material spectrum is used to check the energy and efficiency calibration. These values are recorded and verified if they are within the acceptance limits. Obtained results, together with acceptance limits, for a certain period (one year usually) is graphically presented in the control charts. The acceptance limits for background count rate and reference material gross count rate in the energy region of interest are defined according to the statistical analysis of the data from previous QC period. The mean and standard deviation is calculated and the acceptance limits are set to be ±2σ and ±3σ. QC measurement results falling between ±2σ are considered to be satisfactory, while those falling inside ±3σ are warning. QC measurement results exceeding ±3σ indicate that there is a problem with the measurement system and that analysis of causes and design and application of corrective measures are needed. Analysing the control charts for the previous QC period (year 2022) showed that the controlled parameters were within the defined limits of acceptance. Occasional discrepancies, mainly due to background variation, were minor and were addressed immediately. Background variation was treated simply by repeated measurements after additional ventilation of the measurement laboratory",
publisher = "Niš : Sievert Association",
journal = "RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts",
title = "Quality control of NaI scintillation detector for gamma spectrometric determination of radon concentration",
pages = "32-32",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12590"
}

Vukanac, I., Rajačić, M., Krneta Nikolić, J., Janković, M., Sarap, N., Stanković Petrović, J.,& Kojić, A.. (2023). Quality control of NaI scintillation detector for gamma spectrometric determination of radon concentration. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts
Niš : Sievert Association., 32-32.
https://hdl.handle.net/21.15107/rcub_vinar_12590

Vukanac I, Rajačić M, Krneta Nikolić J, Janković M, Sarap N, Stanković Petrović J, Kojić A. Quality control of NaI scintillation detector for gamma spectrometric determination of radon concentration. in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts. 2023;:32-32.
https://hdl.handle.net/21.15107/rcub_vinar_12590 .

Vukanac, Ivana, Rajačić, Milica, Krneta Nikolić, Jelena, Janković, Marija, Sarap, Nataša, Stanković Petrović, Jelena, Kojić, Andrea, "Quality control of NaI scintillation detector for gamma spectrometric determination of radon concentration" in RAP 2023 : International conference on radiation applications in Physics, Chemistry, Biology, Medical Sciences, Engineering and Environmental Sciences; Book of abstracts (2023):32-32,
https://hdl.handle.net/21.15107/rcub_vinar_12590 .

TY  - CONF
AU  - Sarap, Nataša
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Janković, Marija
AU  - Češljar, Goran
AU  - Đorđević, Ilija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12603
AB  - U radu je prikazana procena stanja u životnoj sredini Mokre Gore, posmatrano sa radioekološkog aspekta. Rezultati gamaspektrometrijskih merenja sprovedenih na germanijumskom detektoru visoke čistoće su pokazala prisustvo 226Ra, 232Th i 40K u zemljištu Mokre Gore u koncentracijama aktivnosti: od 10 Bq/kg do 20 Bq/kg za 226Ra, 13 Bq/kg do 34 Bq/kg za 232Th i 96 Bq/kg do 250 Bq/kg za 40K. Na osnovu rezultata gamaspektrometrijskog merenja aktivnosti navedenih primordijalnih radionuklida, izvršena je procena radijacionog rizika usled terestričkog izlaganja stanovništva na području Mokre Gore. Proračunom su procenjeni sledeći parametri radijacionog rizika: ukupna jačina doze gama zračenja (srednja vrednost 28,6 nGy/h), godišnja efektivna doza (srednja vrednost 0,035 mSv) i indeks radijacionog rizika usled spoljašnjeg izlaganja (srednja vrednost 0,169). Procenjene vrednosti navedenih parametara ukazuju na to da ne postoji uvećan radijacioni rizik za stanovništvo ispitanog područja usled terestričkog izlaganja.
PB  - Novi Sad : Prirodno-matematički fakultet
C3  - 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova
T1  - Procena radioekološke situacije u životnoj sredini Mokre Gore
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12603
ER  - 

@conference{
author = "Sarap, Nataša and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Janković, Marija and Češljar, Goran and Đorđević, Ilija",
year = "2023",
abstract = "U radu je prikazana procena stanja u životnoj sredini Mokre Gore, posmatrano sa radioekološkog aspekta. Rezultati gamaspektrometrijskih merenja sprovedenih na germanijumskom detektoru visoke čistoće su pokazala prisustvo 226Ra, 232Th i 40K u zemljištu Mokre Gore u koncentracijama aktivnosti: od 10 Bq/kg do 20 Bq/kg za 226Ra, 13 Bq/kg do 34 Bq/kg za 232Th i 96 Bq/kg do 250 Bq/kg za 40K. Na osnovu rezultata gamaspektrometrijskog merenja aktivnosti navedenih primordijalnih radionuklida, izvršena je procena radijacionog rizika usled terestričkog izlaganja stanovništva na području Mokre Gore. Proračunom su procenjeni sledeći parametri radijacionog rizika: ukupna jačina doze gama zračenja (srednja vrednost 28,6 nGy/h), godišnja efektivna doza (srednja vrednost 0,035 mSv) i indeks radijacionog rizika usled spoljašnjeg izlaganja (srednja vrednost 0,169). Procenjene vrednosti navedenih parametara ukazuju na to da ne postoji uvećan radijacioni rizik za stanovništvo ispitanog područja usled terestričkog izlaganja.",
publisher = "Novi Sad : Prirodno-matematički fakultet",
journal = "10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova",
title = "Procena radioekološke situacije u životnoj sredini Mokre Gore",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12603"
}

Sarap, N., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Janković, M., Češljar, G.,& Đorđević, I.. (2023). Procena radioekološke situacije u životnoj sredini Mokre Gore. in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova
Novi Sad : Prirodno-matematički fakultet..
https://hdl.handle.net/21.15107/rcub_vinar_12603

Sarap N, Krneta Nikolić J, Rajačić M, Vukanac I, Janković M, Češljar G, Đorđević I. Procena radioekološke situacije u životnoj sredini Mokre Gore. in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12603 .

Sarap, Nataša, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Janković, Marija, Češljar, Goran, Đorđević, Ilija, "Procena radioekološke situacije u životnoj sredini Mokre Gore" in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12603 .

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Stanić, Vojislav
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Šljivić-Ivanović, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12604
AB  - Gasni proporcionalni brojač koristi se za određivanje ukupne alfa i ukupne beta aktivnosti u različitim matriksima kao i za određivanje aktivnosti antropogenog radionuklida 90Sr koji je čist beta emiter. Ovaj rad predstavlja pregled kontrole kvaliteta gasnog proporcionalnog brojača Thermo-Eberline FHT 770T i određivanja efikasnosti, koja se sprovodi sa sertifikovanim standardima 241Am i 90Sr. Brojač ima mogućnost simultanog merenja na 6 detektora i određivanja aktivnosti reda mBq. U radu su prikazani i rezultati sprovedene eksterne kontrole kvaliteta učešćem u interkomparativnom merenju 90Sr, ukupne alfa i ukupne beta aktivnosti u uzorcima vode, organizovanom od strane Međunarodne Agencije za Atomsku Energiju tokom 2022. godine.
PB  - Novi Sad : Prirodno-matematički fakultet
C3  - 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova
T1  - Kontrola kvaliteta gasnog proporcionalnog brojača – radioaktivnost u vodama
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12604
ER  - 

@conference{
author = "Janković, Marija and Sarap, Nataša and Stanić, Vojislav and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Šljivić-Ivanović, Marija",
year = "2023",
abstract = "Gasni proporcionalni brojač koristi se za određivanje ukupne alfa i ukupne beta aktivnosti u različitim matriksima kao i za određivanje aktivnosti antropogenog radionuklida 90Sr koji je čist beta emiter. Ovaj rad predstavlja pregled kontrole kvaliteta gasnog proporcionalnog brojača Thermo-Eberline FHT 770T i određivanja efikasnosti, koja se sprovodi sa sertifikovanim standardima 241Am i 90Sr. Brojač ima mogućnost simultanog merenja na 6 detektora i određivanja aktivnosti reda mBq. U radu su prikazani i rezultati sprovedene eksterne kontrole kvaliteta učešćem u interkomparativnom merenju 90Sr, ukupne alfa i ukupne beta aktivnosti u uzorcima vode, organizovanom od strane Međunarodne Agencije za Atomsku Energiju tokom 2022. godine.",
publisher = "Novi Sad : Prirodno-matematički fakultet",
journal = "10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova",
title = "Kontrola kvaliteta gasnog proporcionalnog brojača – radioaktivnost u vodama",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12604"
}

Janković, M., Sarap, N., Stanić, V., Krneta Nikolić, J., Rajačić, M., Vukanac, I.,& Šljivić-Ivanović, M.. (2023). Kontrola kvaliteta gasnog proporcionalnog brojača – radioaktivnost u vodama. in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova
Novi Sad : Prirodno-matematički fakultet..
https://hdl.handle.net/21.15107/rcub_vinar_12604

Janković M, Sarap N, Stanić V, Krneta Nikolić J, Rajačić M, Vukanac I, Šljivić-Ivanović M. Kontrola kvaliteta gasnog proporcionalnog brojača – radioaktivnost u vodama. in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12604 .

Janković, Marija, Sarap, Nataša, Stanić, Vojislav, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Šljivić-Ivanović, Marija, "Kontrola kvaliteta gasnog proporcionalnog brojača – radioaktivnost u vodama" in 10. memorijalni naučni skup iz zaštite životne sredine "docent dr Milena Dalmacija" : Knjiga radova (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12604 .

TY  - CONF
AU  - Stajčić, A.
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Janković, Marija
AU  - Janković, Bojan
AU  - Pijović, Milena
AU  - Stajčić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12598
AB  - Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.
PB  - Belgrade : Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
T1  - Structural characterization of bio-modified epoxy resin by using MALDI-TOF
SP  - 99
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12598
ER  - 

@conference{
author = "Stajčić, A. and Veljković, Filip and Veličković, Suzana and Janković, Marija and Janković, Bojan and Pijović, Milena and Stajčić, Ivana",
year = "2023",
abstract = "Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection : Book of Abstracts",
title = "Structural characterization of bio-modified epoxy resin by using MALDI-TOF",
pages = "99-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12598"
}

Stajčić, A., Veljković, F., Veličković, S., Janković, M., Janković, B., Pijović, M.,& Stajčić, I.. (2023). Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
Belgrade : Serbian Chemical Society., 99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598

Stajčić A, Veljković F, Veličković S, Janković M, Janković B, Pijović M, Stajčić I. Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts. 2023;:99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

Stajčić, A., Veljković, Filip, Veličković, Suzana, Janković, Marija, Janković, Bojan, Pijović, Milena, Stajčić, Ivana, "Structural characterization of bio-modified epoxy resin by using MALDI-TOF" in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts (2023):99-99,
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

TY  - CONF
AU  - Mladenović, Milica R.
AU  - Cvetinović, Dejan
AU  - Erić, Aleksandar
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Pijović-Radovanović, Milena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12102
AB  - Biomass waste recovery is an environmentally friendly method of waste management and sustainable energy production that effectively reduces greenhouse gas emissions and mitigates climate change. As a result, biomass is emerging as a significant source of renewable energy, replacing fossil fuels to power a green and sustainable society and accelerate the development of a circular bio-economy. Thermochemical conversion processes are the most efficient form of biomass utilization for energy production. Gasification of biomass as one of these processes is given special attention in this paper. The concise fundamentals of this process are presented, the types of gasifiers are described and a brief overview of plasma gasification is given with the highlighted advantages and challenges in its application.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Biomass for clean energy solution: biomass gasification
SP  - 922
EP  - 932
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12102
ER  - 

@conference{
author = "Mladenović, Milica R. and Cvetinović, Dejan and Erić, Aleksandar and Janković, Bojan and Janković, Marija and Pijović-Radovanović, Milena",
year = "2023",
abstract = "Biomass waste recovery is an environmentally friendly method of waste management and sustainable energy production that effectively reduces greenhouse gas emissions and mitigates climate change. As a result, biomass is emerging as a significant source of renewable energy, replacing fossil fuels to power a green and sustainable society and accelerate the development of a circular bio-economy. Thermochemical conversion processes are the most efficient form of biomass utilization for energy production. Gasification of biomass as one of these processes is given special attention in this paper. The concise fundamentals of this process are presented, the types of gasifiers are described and a brief overview of plasma gasification is given with the highlighted advantages and challenges in its application.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Biomass for clean energy solution: biomass gasification",
pages = "922-932",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12102"
}

Mladenović, M. R., Cvetinović, D., Erić, A., Janković, B., Janković, M.,& Pijović-Radovanović, M.. (2023). Biomass for clean energy solution: biomass gasification. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 922-932.
https://hdl.handle.net/21.15107/rcub_vinar_12102

Mladenović MR, Cvetinović D, Erić A, Janković B, Janković M, Pijović-Radovanović M. Biomass for clean energy solution: biomass gasification. in International Conference Power Plants 2023 : Proceedings. 2023;:922-932.
https://hdl.handle.net/21.15107/rcub_vinar_12102 .

Mladenović, Milica R., Cvetinović, Dejan, Erić, Aleksandar, Janković, Bojan, Janković, Marija, Pijović-Radovanović, Milena, "Biomass for clean energy solution: biomass gasification" in International Conference Power Plants 2023 : Proceedings (2023):922-932,
https://hdl.handle.net/21.15107/rcub_vinar_12102 .

TY  - CONF
AU  - Cvetković, Slobodan
AU  - Perendija, Jovana
AU  - Pavlović, Stefan
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Erić, Aleksandar
AU  - Cvetinović, Dejan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12767
AB  - Jedna od najvažnijih stvari koje su čovečanstvu potrebne u savremenom svetu je dovoljna proizvodnja energije. Glavni izvor za proizvodnju energije koji se koristi u svetu su fosilna goriva, čija stalna potrošnja ne samo da šteti životnoj sredini već i ubrzava njihovo iscrpljivanje. Vodonik proizveden iz ostataka biomase može biti dobra opcija za proizvodnju čiste energije i smanjenje emisije gasova sa efektom staklene bašte u životnu sredinu. U ovom radu je proučavana mogućnost proizvodnje vodonika parnom gasifikacijom sojine slame u Mačvanskom okrugu u Republici Srbiji. Dodatno, procenjene su moguće primene potencijala vodonika u proizvodnji električne energije i drumskom saobraćaju. Dobijeni rezultati pokazuju da se gasifikacijom sojine slame u Mačvanskom okrugu može proizvesti 171,184 kg vodonika i 3,420,256 kWh električne energije. Procenjeni potencijal vodonika u Mačvanskom okrugu omogućava vozilima na vodonik da pređu 17,118,400 kilometara. Ovo istraživanje može doprineti integraciji uzgoja poljoprivrednih useva i vodonične ekonomije u Mačvanskom okrugu.
AB  - One of the most crucial things that humanity needs in the modern world is sufficient energy production. The main energy source used globally is fossil fuel, whose constant consumption not only harms the environment but also speeds up their depletion. Hydrogen produced from biomass residues can be a good option for clean energy production and the reduction of greenhouse gas emissions into the environment. In this paper, the possibility of hydrogen production by steam gasification of soybean straw in the Mačva region in the Republic of Serbia was studied. Additionally, possible applications of hydrogen potential in electricity production and road transport were assessed. The obtained results show that the gasification of soybean straw in the Mačva region can produce 171,184 kg of hydrogen and generate 3,420,256 kWh of electricity. The estimated hydrogen potential in the Mačva region allows hydrogen-powered vehicles to go 17,118,400 kilometers. This study can contribute to integrating crop cultivation and the hydrogen economy in the Mačva region.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom
T1  - Assessment of the use of soybean straw in the Mačva region for the production of hydrogen through the gasification process by water steam
SP  - 753
EP  - 762
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12767
ER  - 

@conference{
author = "Cvetković, Slobodan and Perendija, Jovana and Pavlović, Stefan and Janković, Bojan and Janković, Marija and Erić, Aleksandar and Cvetinović, Dejan",
year = "2023",
abstract = "Jedna od najvažnijih stvari koje su čovečanstvu potrebne u savremenom svetu je dovoljna proizvodnja energije. Glavni izvor za proizvodnju energije koji se koristi u svetu su fosilna goriva, čija stalna potrošnja ne samo da šteti životnoj sredini već i ubrzava njihovo iscrpljivanje. Vodonik proizveden iz ostataka biomase može biti dobra opcija za proizvodnju čiste energije i smanjenje emisije gasova sa efektom staklene bašte u životnu sredinu. U ovom radu je proučavana mogućnost proizvodnje vodonika parnom gasifikacijom sojine slame u Mačvanskom okrugu u Republici Srbiji. Dodatno, procenjene su moguće primene potencijala vodonika u proizvodnji električne energije i drumskom saobraćaju. Dobijeni rezultati pokazuju da se gasifikacijom sojine slame u Mačvanskom okrugu može proizvesti 171,184 kg vodonika i 3,420,256 kWh električne energije. Procenjeni potencijal vodonika u Mačvanskom okrugu omogućava vozilima na vodonik da pređu 17,118,400 kilometara. Ovo istraživanje može doprineti integraciji uzgoja poljoprivrednih useva i vodonične ekonomije u Mačvanskom okrugu., One of the most crucial things that humanity needs in the modern world is sufficient energy production. The main energy source used globally is fossil fuel, whose constant consumption not only harms the environment but also speeds up their depletion. Hydrogen produced from biomass residues can be a good option for clean energy production and the reduction of greenhouse gas emissions into the environment. In this paper, the possibility of hydrogen production by steam gasification of soybean straw in the Mačva region in the Republic of Serbia was studied. Additionally, possible applications of hydrogen potential in electricity production and road transport were assessed. The obtained results show that the gasification of soybean straw in the Mačva region can produce 171,184 kg of hydrogen and generate 3,420,256 kWh of electricity. The estimated hydrogen potential in the Mačva region allows hydrogen-powered vehicles to go 17,118,400 kilometers. This study can contribute to integrating crop cultivation and the hydrogen economy in the Mačva region.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom, Assessment of the use of soybean straw in the Mačva region for the production of hydrogen through the gasification process by water steam",
pages = "753-762",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12767"
}

Cvetković, S., Perendija, J., Pavlović, S., Janković, B., Janković, M., Erić, A.,& Cvetinović, D.. (2023). Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 753-762.
https://hdl.handle.net/21.15107/rcub_vinar_12767

Cvetković S, Perendija J, Pavlović S, Janković B, Janković M, Erić A, Cvetinović D. Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom. in International Conference Power Plants 2023 : Proceedings. 2023;:753-762.
https://hdl.handle.net/21.15107/rcub_vinar_12767 .

Cvetković, Slobodan, Perendija, Jovana, Pavlović, Stefan, Janković, Bojan, Janković, Marija, Erić, Aleksandar, Cvetinović, Dejan, "Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom" in International Conference Power Plants 2023 : Proceedings (2023):753-762,
https://hdl.handle.net/21.15107/rcub_vinar_12767 .

TY  - CONF
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Cvetković, Slobodan
AU  - Manić, Nebojša
AU  - Pijović-Radovanović, Milena
AU  - Perendija, Jovana
AU  - Cvetinović, Dejan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12363
AB  - Biomasa se smatra važnim obnovljivim resursom, koji igra ključnu ulogu u razvoju održivih energetskih sistema. Biomasa se može pretvoriti u energiju ili vredne hemikalije sagorevanjem, utečnjavanjem, pirolizom i gasifikacijom. Među ovim procesima, termička gasifikacija ‛razlaže’ biomasu u lake hemijske vrste na visokim temperaturama, koje se mogu primeniti na biomasu sa najvećom raznovrsnošću. Kao krajnji (ciljni) proizvod gasifikacije biomase, singas ili gas bogat vodonikom (H2), su veoma važni međuproizvodi u petrohemijskoj industriji. Međutim, problematični katran koji se proizvodi tokom gasifikacije mogao bi da donese niz problema. Katalitička gasifikacija biomase je obećavajuća strategija za značajno ublažavanje ovih problema. Katalizatori na bazi prelaznih metala za katalitičku gasifikaciju biomase proučavani su poslednjih decenija. U ovom pregledu se razmatraju različiti katalizatori prelaznih metala za gasifikaciju biomase, uključujući monometalne i bimetalne katalizatore na bazi nikla (Ni) i druge katalizatore na bazi Fe i Pt. Performanse ovih katalizatora su bile procenjene na osnovu primenjenih parametara reakcije, kvaliteta proizvedenog singasa i učinkovitosti u smanjenju katrana. Sumirane su primena DFT (‛funkcionalne teorije gustine’) proračuna i AI (‛veštačke inteligencije’) za proučavanje mehanizama gasifikacije biomase, a takođe je bio i razmatran uzrok deaktivacije katalizatora i regeneracije istrošenih katalizatora. Isto tako, u ovom pregledu, razmotren je potencijal razvoja katalitičke gasifikacije biomase u Republici Srbiji.
AB  - Biomass is considered as an important renewable resource, which plays a key role in the development of sustainable energy systems. Biomass can be converted into energy or valuable chemicals by combustion, liquefaction, pyrolysis and gasification. Among these processes, thermal gasification “decomposes” biomass into the light chemical species at high temperatures, which can be applied to biomass with the greatest diversity. As the final (target) product of biomass gasification, syngas or gas rich in hydrogen (H2), are very important intermediate products in the petrochemical industry. However, the problematic tar produced during gasification could bring a number of problems. Catalytic biomass gasification is a promising strategy to significantly alleviate these problems. Transition metal-based catalysts for catalytic biomass gasification have been studied in recent decades. This review discusses various transition metal catalysts for biomass gasification, including nickel (Ni)-based monometallic and bimetallic catalysts and other Fe- and Pt-based catalysts. The performance of these catalysts is evaluated based on the applied reaction parameters, the quality of the syngas produced, and the tar reduction performance. Applications of DFT (‛Density Functional Theory’) calculations and AI (‛Artificial Intelligence’) to study biomass gasification mechanisms are summarized, and the cause of catalyst deactivation and regeneration of spent catalysts are also discussed. Likewise, in this review, the development potential of catalytic gasification of biomass in the Republic of Serbia was considered.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji
T1  - Overview of catalytic gasification of biomass suitable for industry in the Republic of Serbia
SP  - 910
EP  - 921
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12363
ER  - 

@conference{
author = "Janković, Bojan and Janković, Marija and Cvetković, Slobodan and Manić, Nebojša and Pijović-Radovanović, Milena and Perendija, Jovana and Cvetinović, Dejan",
year = "2023",
abstract = "Biomasa se smatra važnim obnovljivim resursom, koji igra ključnu ulogu u razvoju održivih energetskih sistema. Biomasa se može pretvoriti u energiju ili vredne hemikalije sagorevanjem, utečnjavanjem, pirolizom i gasifikacijom. Među ovim procesima, termička gasifikacija ‛razlaže’ biomasu u lake hemijske vrste na visokim temperaturama, koje se mogu primeniti na biomasu sa najvećom raznovrsnošću. Kao krajnji (ciljni) proizvod gasifikacije biomase, singas ili gas bogat vodonikom (H2), su veoma važni međuproizvodi u petrohemijskoj industriji. Međutim, problematični katran koji se proizvodi tokom gasifikacije mogao bi da donese niz problema. Katalitička gasifikacija biomase je obećavajuća strategija za značajno ublažavanje ovih problema. Katalizatori na bazi prelaznih metala za katalitičku gasifikaciju biomase proučavani su poslednjih decenija. U ovom pregledu se razmatraju različiti katalizatori prelaznih metala za gasifikaciju biomase, uključujući monometalne i bimetalne katalizatore na bazi nikla (Ni) i druge katalizatore na bazi Fe i Pt. Performanse ovih katalizatora su bile procenjene na osnovu primenjenih parametara reakcije, kvaliteta proizvedenog singasa i učinkovitosti u smanjenju katrana. Sumirane su primena DFT (‛funkcionalne teorije gustine’) proračuna i AI (‛veštačke inteligencije’) za proučavanje mehanizama gasifikacije biomase, a takođe je bio i razmatran uzrok deaktivacije katalizatora i regeneracije istrošenih katalizatora. Isto tako, u ovom pregledu, razmotren je potencijal razvoja katalitičke gasifikacije biomase u Republici Srbiji., Biomass is considered as an important renewable resource, which plays a key role in the development of sustainable energy systems. Biomass can be converted into energy or valuable chemicals by combustion, liquefaction, pyrolysis and gasification. Among these processes, thermal gasification “decomposes” biomass into the light chemical species at high temperatures, which can be applied to biomass with the greatest diversity. As the final (target) product of biomass gasification, syngas or gas rich in hydrogen (H2), are very important intermediate products in the petrochemical industry. However, the problematic tar produced during gasification could bring a number of problems. Catalytic biomass gasification is a promising strategy to significantly alleviate these problems. Transition metal-based catalysts for catalytic biomass gasification have been studied in recent decades. This review discusses various transition metal catalysts for biomass gasification, including nickel (Ni)-based monometallic and bimetallic catalysts and other Fe- and Pt-based catalysts. The performance of these catalysts is evaluated based on the applied reaction parameters, the quality of the syngas produced, and the tar reduction performance. Applications of DFT (‛Density Functional Theory’) calculations and AI (‛Artificial Intelligence’) to study biomass gasification mechanisms are summarized, and the cause of catalyst deactivation and regeneration of spent catalysts are also discussed. Likewise, in this review, the development potential of catalytic gasification of biomass in the Republic of Serbia was considered.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji, Overview of catalytic gasification of biomass suitable for industry in the Republic of Serbia",
pages = "910-921",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12363"
}

Janković, B., Janković, M., Cvetković, S., Manić, N., Pijović-Radovanović, M., Perendija, J.,& Cvetinović, D.. (2023). Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 910-921.
https://hdl.handle.net/21.15107/rcub_vinar_12363

Janković B, Janković M, Cvetković S, Manić N, Pijović-Radovanović M, Perendija J, Cvetinović D. Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji. in International Conference Power Plants 2023 : Proceedings. 2023;:910-921.
https://hdl.handle.net/21.15107/rcub_vinar_12363 .

Janković, Bojan, Janković, Marija, Cvetković, Slobodan, Manić, Nebojša, Pijović-Radovanović, Milena, Perendija, Jovana, Cvetinović, Dejan, "Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji" in International Conference Power Plants 2023 : Proceedings (2023):910-921,
https://hdl.handle.net/21.15107/rcub_vinar_12363 .

TY  - CONF
AU  - Janković, Marija
AU  - Veljković, Filip
AU  - Sarap, Nataša
AU  - Veličković, Suzana
AU  - Stajčić, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12354
AB  - This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Analysis of commercial supplements using a nuclear and MALDI-MS techniques
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12354
ER  - 

@conference{
author = "Janković, Marija and Veljković, Filip and Sarap, Nataša and Veličković, Suzana and Stajčić, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Analysis of commercial supplements using a nuclear and MALDI-MS techniques",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12354"
}

Janković, M., Veljković, F., Sarap, N., Veličković, S., Stajčić, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12354

Janković M, Veljković F, Sarap N, Veličković S, Stajčić I, Šljivić-Ivanović M, Janković B. Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

Janković, Marija, Veljković, Filip, Sarap, Nataša, Veličković, Suzana, Stajčić, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Analysis of commercial supplements using a nuclear and MALDI-MS techniques" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

TY  - CONF
AU  - Jelić, Ivana
AU  - Savić, Aleksandar
AU  - Miljojčić, Tatjana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Marija
AU  - Dimović, Slavko
AU  - Zakić, Dimitrije
AU  - Antonijevic, Dragi
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12571
AB  - The construction sector is responsible for approximately 39% of energy use and process-related carbon dioxide emissions. Mixing waste materials into concrete, as a substitute for cement and/or aggregate, increases energy efficiency and sustainability in general. Additionally, pressure on the environment is decreasing by reducing the amount of exploitation of natural raw materials. On the other hand, the rapid progress of the electronic industry has led to the generation of a large amount of electrical waste before the end of its useful life. Disposal of old monitors and TV screens, i.e. their cathode-ray tubes (CRT), represents a major problem for the environment because CRT waste is classified as hazardous due to its high lead content. This paper deals with an overview of investigations on CRT waste utilization in cement materials in order to increase sustainability and encourage a circular economy in the construction sector.
AB  - Građevinski sektor je odgovoran za približno 39% potrošnje energije i emisija ugljendioksida vezanih za date procese. Mešanje otpadnih materijala u beton, kao zamena za cement i/ili agregat, povećava energetsku efikasnost i održivost uopšteno. Pored toga, smanjuje se i pritisak na životnu sredinu smanjenjem eksploatacije prirodnih sirovina. S druge strane, brzi napredak elektronske industrije doveo je do stvaranja velike količine električnog otpada pre isteka njegovog životnog veka. Odlaganje starih monitora i TV ekrana, odnosno njihovih katodnih cevi (CRT), predstavlja veliki problem za životnu sredinu pošto je otpad od CRT-a klasifikovan kao opasan usled visokog sadržaja olova. Ovaj rad se bavi pregledom istraživanja o korišćenju CRT otpada u cementnim materijalima u cilju povećanja održivosti i podsticanja cirkularne ekonomije u građevinskom sektoru.
PB  - Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Cathode ray tube waste glass in concrete preparation - increasing sustainability
T1  - Otpadno staklo katodnih cevi u pripremi betona - povećavanјe održivosti
SP  - 309
EP  - 315
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12571
ER  - 

@conference{
author = "Jelić, Ivana and Savić, Aleksandar and Miljojčić, Tatjana and Šljivić-Ivanović, Marija and Janković, Marija and Dimović, Slavko and Zakić, Dimitrije and Antonijevic, Dragi",
year = "2023",
abstract = "The construction sector is responsible for approximately 39% of energy use and process-related carbon dioxide emissions. Mixing waste materials into concrete, as a substitute for cement and/or aggregate, increases energy efficiency and sustainability in general. Additionally, pressure on the environment is decreasing by reducing the amount of exploitation of natural raw materials. On the other hand, the rapid progress of the electronic industry has led to the generation of a large amount of electrical waste before the end of its useful life. Disposal of old monitors and TV screens, i.e. their cathode-ray tubes (CRT), represents a major problem for the environment because CRT waste is classified as hazardous due to its high lead content. This paper deals with an overview of investigations on CRT waste utilization in cement materials in order to increase sustainability and encourage a circular economy in the construction sector., Građevinski sektor je odgovoran za približno 39% potrošnje energije i emisija ugljendioksida vezanih za date procese. Mešanje otpadnih materijala u beton, kao zamena za cement i/ili agregat, povećava energetsku efikasnost i održivost uopšteno. Pored toga, smanjuje se i pritisak na životnu sredinu smanjenjem eksploatacije prirodnih sirovina. S druge strane, brzi napredak elektronske industrije doveo je do stvaranja velike količine električnog otpada pre isteka njegovog životnog veka. Odlaganje starih monitora i TV ekrana, odnosno njihovih katodnih cevi (CRT), predstavlja veliki problem za životnu sredinu pošto je otpad od CRT-a klasifikovan kao opasan usled visokog sadržaja olova. Ovaj rad se bavi pregledom istraživanja o korišćenju CRT otpada u cementnim materijalima u cilju povećanja održivosti i podsticanja cirkularne ekonomije u građevinskom sektoru.",
publisher = "Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Cathode ray tube waste glass in concrete preparation - increasing sustainability, Otpadno staklo katodnih cevi u pripremi betona - povećavanјe održivosti",
pages = "309-315",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12571"
}

Jelić, I., Savić, A., Miljojčić, T., Šljivić-Ivanović, M., Janković, M., Dimović, S., Zakić, D.,& Antonijevic, D.. (2023). Cathode ray tube waste glass in concrete preparation - increasing sustainability. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije., 309-315.
https://hdl.handle.net/21.15107/rcub_vinar_12571

Jelić I, Savić A, Miljojčić T, Šljivić-Ivanović M, Janković M, Dimović S, Zakić D, Antonijevic D. Cathode ray tube waste glass in concrete preparation - increasing sustainability. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:309-315.
https://hdl.handle.net/21.15107/rcub_vinar_12571 .

Jelić, Ivana, Savić, Aleksandar, Miljojčić, Tatjana, Šljivić-Ivanović, Marija, Janković, Marija, Dimović, Slavko, Zakić, Dimitrije, Antonijevic, Dragi, "Cathode ray tube waste glass in concrete preparation - increasing sustainability" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):309-315,
https://hdl.handle.net/21.15107/rcub_vinar_12571 .

TY  - CONF
AU  - Sarap, Nataša
AU  - Janković, Marija
AU  - Stanić, Vojislav
AU  - Jelić, Ivana
AU  - Šljivić-Ivanović, Marija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12572
AB  - Gabrovnica, uranium mine near Kalna in the Eastern Serbia was a natural ore with uranium content. Exploitation of the uranium ore in this region was started in the 1960s and it was terminated in 1996. The aim of this work was to analyze radiological characterization of environmental samples around uranium mine Gabrovnica. Soil samples were taken in the autumn of 2022 and spring 2023, while surface soil samples (Gabrovnička River) were taken continuously for six month (July-December 2022 and January-June 2023). All samples were analyzed in order to determine gross alpha and gross beta activities and measured on ultra low level gas proportional counter Thermo-Eberline FHT 770T.
PB  - University of Belgrade : Technical Faculty in Bor
C3  - IOC 2023 : 54th International October Conference on Mining and Metallurgy : Proceedings
T1  - Analysis of gross alpha and gross beta activity in samples around former uranium mine Gabrovnica
SP  - 92
EP  - 95
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12572
ER  - 

@conference{
author = "Sarap, Nataša and Janković, Marija and Stanić, Vojislav and Jelić, Ivana and Šljivić-Ivanović, Marija",
year = "2023",
abstract = "Gabrovnica, uranium mine near Kalna in the Eastern Serbia was a natural ore with uranium content. Exploitation of the uranium ore in this region was started in the 1960s and it was terminated in 1996. The aim of this work was to analyze radiological characterization of environmental samples around uranium mine Gabrovnica. Soil samples were taken in the autumn of 2022 and spring 2023, while surface soil samples (Gabrovnička River) were taken continuously for six month (July-December 2022 and January-June 2023). All samples were analyzed in order to determine gross alpha and gross beta activities and measured on ultra low level gas proportional counter Thermo-Eberline FHT 770T.",
publisher = "University of Belgrade : Technical Faculty in Bor",
journal = "IOC 2023 : 54th International October Conference on Mining and Metallurgy : Proceedings",
title = "Analysis of gross alpha and gross beta activity in samples around former uranium mine Gabrovnica",
pages = "92-95",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12572"
}

Sarap, N., Janković, M., Stanić, V., Jelić, I.,& Šljivić-Ivanović, M.. (2023). Analysis of gross alpha and gross beta activity in samples around former uranium mine Gabrovnica. in IOC 2023 : 54th International October Conference on Mining and Metallurgy : Proceedings
University of Belgrade : Technical Faculty in Bor., 92-95.
https://hdl.handle.net/21.15107/rcub_vinar_12572

Sarap N, Janković M, Stanić V, Jelić I, Šljivić-Ivanović M. Analysis of gross alpha and gross beta activity in samples around former uranium mine Gabrovnica. in IOC 2023 : 54th International October Conference on Mining and Metallurgy : Proceedings. 2023;:92-95.
https://hdl.handle.net/21.15107/rcub_vinar_12572 .

Sarap, Nataša, Janković, Marija, Stanić, Vojislav, Jelić, Ivana, Šljivić-Ivanović, Marija, "Analysis of gross alpha and gross beta activity in samples around former uranium mine Gabrovnica" in IOC 2023 : 54th International October Conference on Mining and Metallurgy : Proceedings (2023):92-95,
https://hdl.handle.net/21.15107/rcub_vinar_12572 .

TY  - CONF
AU  - Jelić, Ivana
AU  - Savić, Aleksandar
AU  - Miljojčić, Tatjana
AU  - Šljivić-Ivanović, Marija
AU  - Dimović, Slavko
AU  - Janković, Marija
AU  - Stanić, Vojislav
AU  - Zakić, Dimitrije
AU  - Antonijevic, Dragi
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12573
AB  - The applicability of solid bricks waste in geopolymerization technique was considered. Waste samples were characterized in terms of mineralogical composition by XRD prior to mechanical testing. XRD analysis showed that both brick samples contained anorthite, wollastonite, and mullite as the main components. The compressive strength investigation was carried out by screening method with three geopolymer mixtures. Geopolymer mixtures were prepared with alkaline activators; the mixtures were poured into molds and air-dried for 28 days. The compressive strength of samples was measured according to the standard SRPS EN 12390-3:2010 for cubic samples. The compressive strength values ranged from 9.8 MPa for the newer solid brick, 10.2 MPa for the older solid brick, and 10.5 MPa for the solid brick mix waste geopolymer sample. The most likely underlying reason for the higher compressive strength results of the older solid brick and the mixed sample is their mineral composition, i.e. higher proportion of aluminosilicate. However, all samples showed satisfactory compressive strengths, and it represents an excellent basis for further research.
PB  - Belgrade : IRASA - International Research Academy of Science and Art
C3  - IRASA : International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION : SETI V 2023 : Book of Proceedings
T1  - Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation
SP  - 416
EP  - 422
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12573
ER  - 

@conference{
author = "Jelić, Ivana and Savić, Aleksandar and Miljojčić, Tatjana and Šljivić-Ivanović, Marija and Dimović, Slavko and Janković, Marija and Stanić, Vojislav and Zakić, Dimitrije and Antonijevic, Dragi",
year = "2023",
abstract = "The applicability of solid bricks waste in geopolymerization technique was considered. Waste samples were characterized in terms of mineralogical composition by XRD prior to mechanical testing. XRD analysis showed that both brick samples contained anorthite, wollastonite, and mullite as the main components. The compressive strength investigation was carried out by screening method with three geopolymer mixtures. Geopolymer mixtures were prepared with alkaline activators; the mixtures were poured into molds and air-dried for 28 days. The compressive strength of samples was measured according to the standard SRPS EN 12390-3:2010 for cubic samples. The compressive strength values ranged from 9.8 MPa for the newer solid brick, 10.2 MPa for the older solid brick, and 10.5 MPa for the solid brick mix waste geopolymer sample. The most likely underlying reason for the higher compressive strength results of the older solid brick and the mixed sample is their mineral composition, i.e. higher proportion of aluminosilicate. However, all samples showed satisfactory compressive strengths, and it represents an excellent basis for further research.",
publisher = "Belgrade : IRASA - International Research Academy of Science and Art",
journal = "IRASA : International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION : SETI V 2023 : Book of Proceedings",
title = "Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation",
pages = "416-422",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12573"
}

Jelić, I., Savić, A., Miljojčić, T., Šljivić-Ivanović, M., Dimović, S., Janković, M., Stanić, V., Zakić, D.,& Antonijevic, D.. (2023). Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation. in IRASA : International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION : SETI V 2023 : Book of Proceedings
Belgrade : IRASA - International Research Academy of Science and Art., 416-422.
https://hdl.handle.net/21.15107/rcub_vinar_12573

Jelić I, Savić A, Miljojčić T, Šljivić-Ivanović M, Dimović S, Janković M, Stanić V, Zakić D, Antonijevic D. Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation. in IRASA : International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION : SETI V 2023 : Book of Proceedings. 2023;:416-422.
https://hdl.handle.net/21.15107/rcub_vinar_12573 .

Jelić, Ivana, Savić, Aleksandar, Miljojčić, Tatjana, Šljivić-Ivanović, Marija, Dimović, Slavko, Janković, Marija, Stanić, Vojislav, Zakić, Dimitrije, Antonijevic, Dragi, "Reuse of Solid Brick Waste Mix in Geopolymerization – a Preliminary Investigation" in IRASA : International Scientific Conference SCIENCE, EDUCATION, TECHNOLOGY AND INNOVATION : SETI V 2023 : Book of Proceedings (2023):416-422,
https://hdl.handle.net/21.15107/rcub_vinar_12573 .