TY  - JOUR
AU  - Mitrović, Branislava
AU  - Stefanović, Srđan
AU  - Šefer, Dragan
AU  - Jovanović, Dragoljub
AU  - Ajtić, Jelena
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2507
AB  - The aim of this investigation is to determine the content of ten elements, Cr, Mn, Co, Ni, Fe, Zn, As, Cu, Se, and Cd, in pig feed, manure and earthworms (Lumbricus terrestris). Samples were collected during 2015 and 2017, on four pig farms in Serbia, and analyzed for elements by inductively coupled plasma mass spectrometry. According to the mean concentrations, the elements show the following trends: Fe > Mn > Zn > Cr > Ni > Cu > Cd > Se > As > Co in monocalcium phosphate, Zn > Mn > Fe > Cu > Co > Cr > Ni > Se > As > Cd in vitamin-mineral premixes, Fe > Zn > Mn > Cu > Ni > Cr > Se > Co > As > Cd in complete feed, and Fe > Zn > Mn > Cu > Ni > Cr > Co > Se > Cd > As in pig manure. The obtained results show that monocalcium phosphate and vitamin-mineral premixes are the main source of Mn, Zn, and Fe in complete feed mixtures. The Cd concentration in one sample of monocalcium phosphate exceeds the maximum permissible level. Only one out of six investigated complete feed mixtures was in accordance with the national and EU regulations. The presence of Fe, Zn, and Mn in earthworms reflects their concentration in pig manure, but this is not noticed for Cr, Cu, Se, As, Ni, Co, and Cd.
PB  - Taylor & Francis
T2  - Toxin Reviews
T1  - The content of ten elements in pig feed and manure and its relationshipwith element concentration in earthworms on swine farms
VL  - 42
IS  - 1
SP  - 332
EP  - 341
DO  - 10.1080/15569543.2022.2163662
ER  - 

@article{
author = "Mitrović, Branislava and Stefanović, Srđan and Šefer, Dragan and Jovanović, Dragoljub and Ajtić, Jelena",
year = "2023",
abstract = "The aim of this investigation is to determine the content of ten elements, Cr, Mn, Co, Ni, Fe, Zn, As, Cu, Se, and Cd, in pig feed, manure and earthworms (Lumbricus terrestris). Samples were collected during 2015 and 2017, on four pig farms in Serbia, and analyzed for elements by inductively coupled plasma mass spectrometry. According to the mean concentrations, the elements show the following trends: Fe > Mn > Zn > Cr > Ni > Cu > Cd > Se > As > Co in monocalcium phosphate, Zn > Mn > Fe > Cu > Co > Cr > Ni > Se > As > Cd in vitamin-mineral premixes, Fe > Zn > Mn > Cu > Ni > Cr > Se > Co > As > Cd in complete feed, and Fe > Zn > Mn > Cu > Ni > Cr > Co > Se > Cd > As in pig manure. The obtained results show that monocalcium phosphate and vitamin-mineral premixes are the main source of Mn, Zn, and Fe in complete feed mixtures. The Cd concentration in one sample of monocalcium phosphate exceeds the maximum permissible level. Only one out of six investigated complete feed mixtures was in accordance with the national and EU regulations. The presence of Fe, Zn, and Mn in earthworms reflects their concentration in pig manure, but this is not noticed for Cr, Cu, Se, As, Ni, Co, and Cd.",
publisher = "Taylor & Francis",
journal = "Toxin Reviews",
title = "The content of ten elements in pig feed and manure and its relationshipwith element concentration in earthworms on swine farms",
volume = "42",
number = "1",
pages = "332-341",
doi = "10.1080/15569543.2022.2163662"
}

Mitrović, B., Stefanović, S., Šefer, D., Jovanović, D.,& Ajtić, J.. (2023). The content of ten elements in pig feed and manure and its relationshipwith element concentration in earthworms on swine farms. in Toxin Reviews
Taylor & Francis., 42(1), 332-341.
https://doi.org/10.1080/15569543.2022.2163662

Mitrović B, Stefanović S, Šefer D, Jovanović D, Ajtić J. The content of ten elements in pig feed and manure and its relationshipwith element concentration in earthworms on swine farms. in Toxin Reviews. 2023;42(1):332-341.
doi:10.1080/15569543.2022.2163662 .

Mitrović, Branislava, Stefanović, Srđan, Šefer, Dragan, Jovanović, Dragoljub, Ajtić, Jelena, "The content of ten elements in pig feed and manure and its relationshipwith element concentration in earthworms on swine farms" in Toxin Reviews, 42, no. 1 (2023):332-341,
https://doi.org/10.1080/15569543.2022.2163662 . .

TY  - CONF
AU  - Zorko, Benjamin
AU  - Ajtić, Jelena
AU  - Nečemer, Marijan
AU  - Sarvan, Darko
AU  - Rajačić, Milica
AU  - Korun, Matjaž
AU  - Vodenik, Branko
AU  - Krneta Nikolić, Jelena
AU  - Glavič-Cindro, Denis
AU  - Vukanac, Ivana
AU  - Petrovič, Toni
AU  - Ilić, Zorana
AU  - Vidic, alf
AU  - Didović, Irma
AU  - Janušeski, Jovan
AU  - Anuševa, Jordanka
AU  - Dimovska, Snezana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Petrinec, Branko
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3271
AB  - Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama.
AB  - Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.
PB  - Bilje : Javna ustanova „Park prirode Kopački rit“
C3  - 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
T1  - Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi
T1  - Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere
SP  - 250
EP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3271
ER  - 

@conference{
author = "Zorko, Benjamin and Ajtić, Jelena and Nečemer, Marijan and Sarvan, Darko and Rajačić, Milica and Korun, Matjaž and Vodenik, Branko and Krneta Nikolić, Jelena and Glavič-Cindro, Denis and Vukanac, Ivana and Petrovič, Toni and Ilić, Zorana and Vidic, alf and Didović, Irma and Janušeski, Jovan and Anuševa, Jordanka and Dimovska, Snezana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Petrinec, Branko",
year = "2023",
abstract = "Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama., Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.",
publisher = "Bilje : Javna ustanova „Park prirode Kopački rit“",
journal = "12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.",
title = "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi, Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere",
pages = "250-253",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3271"
}

Zorko, B., Ajtić, J., Nečemer, M., Sarvan, D., Rajačić, M., Korun, M., Vodenik, B., Krneta Nikolić, J., Glavič-Cindro, D., Vukanac, I., Petrovič, T., Ilić, Z., Vidic, a., Didović, I., Janušeski, J., Anuševa, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S.,& Petrinec, B.. (2023). Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
Bilje : Javna ustanova „Park prirode Kopački rit“., 250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271

Zorko B, Ajtić J, Nečemer M, Sarvan D, Rajačić M, Korun M, Vodenik B, Krneta Nikolić J, Glavič-Cindro D, Vukanac I, Petrovič T, Ilić Z, Vidic A, Didović I, Janušeski J, Anuševa J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Petrinec B. Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.. 2023;:250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

Zorko, Benjamin, Ajtić, Jelena, Nečemer, Marijan, Sarvan, Darko, Rajačić, Milica, Korun, Matjaž, Vodenik, Branko, Krneta Nikolić, Jelena, Glavič-Cindro, Denis, Vukanac, Ivana, Petrovič, Toni, Ilić, Zorana, Vidic, alf, Didović, Irma, Janušeski, Jovan, Anuševa, Jordanka, Dimovska, Snezana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Petrinec, Branko, "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi" in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023. (2023):250-253,
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

TY  - CONF
AU  - Hernández Ceballos, Miguel Ángel
AU  - Ajtić, Jelena
AU  - Brattich, Erika
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3273
AB  - The temporal and spatial variability of atmospheric compounds and pollutants is largely driven by a combination of local, mesoscale and synoptic meteorological conditions influencing atmospheric processes, such as horizontal and vertical dispersion, deposition, chemical reactions rates and velocity. At the same time, different anthropogenic and natural radionuclides have long been used as tracers to understand and describe surface and atmospheric processes and their influence on transport and deposition. Among these substances, 7Be, a cosmogenic radionuclide produced by  spallation reactions in the stratosphere and upper troposphere, is frequently used as tracer of different atmospheric processes. Many studies have reported how the variability of 7Be surface concentration is driven by the movement of air masses, atmospheric deposition processes, tropospheric vertical mixing, and the vertical exchange between the stratosphere and the troposphere. 

With an aim to elucidate the influence of teleconnection and tropospheric circulation dynamics, several studies have investigated the influence of the main modes of large scale and regional climate variability in Europe, such as North Atlantic Oscillation (NAO), Arctic Oscillation (AO), East Atlantic (EA), East Atlantic/Western Russia (EA/WR), Scandinavian pattern (SCAND), and Western Mediterranean Oscillation (WeMO) on the surface 7Be activity concentrations. This paper, in particular, presents a summary of recent results achieved by our team working on this topic, focusing firstly at the European scale and then to northern Europe. 

Analysing 7Be surface concentrations measured at 15 European sampling stations over 2005–2014 and combining the calculation of air mass trajectories and cluster analysis with time series of teleconnection indices, we found that extremely high values of the 7Be surface concentrations are largely connected with the negative phase of NAO and We-MO, and with the positive EA phase. These results showed a latitudinal division between the northern and southern sites, with a similar influence of teleconnection patterns, while the sites located in the central part of Europe present a larger variability in the impact of teleconnection patterns. A detailed analysis in northern Europe revealed that extreme 7Be surface concentrations observed during winter were associated with variability of the Arctic polar vortex and linked with high values of the SCAND index.

The findings provide a classification of meteorological conditions associated with high surface 7Be concentrations and thus offer a basis for forecasting these events. In a general view, the findings also help in understanding the seasonal and inter-annual atmospheric variability at different scales and its impact on airborne concentrations of radionuclides and pollutants.
PB  - European Meteorological Society
C3  - European Meteorological Society, Annual Meeting, Bratislava 4–8 September, 2023
T1  - Understanding the variability of 7Be surface concentrations in Europe: the role of teleconnection patterns
VL  - 20
DO  - https://doi.org/10.5194/ems2023-204
ER  - 

@conference{
author = "Hernández Ceballos, Miguel Ángel and Ajtić, Jelena and Brattich, Erika",
year = "2023",
abstract = "The temporal and spatial variability of atmospheric compounds and pollutants is largely driven by a combination of local, mesoscale and synoptic meteorological conditions influencing atmospheric processes, such as horizontal and vertical dispersion, deposition, chemical reactions rates and velocity. At the same time, different anthropogenic and natural radionuclides have long been used as tracers to understand and describe surface and atmospheric processes and their influence on transport and deposition. Among these substances, 7Be, a cosmogenic radionuclide produced by  spallation reactions in the stratosphere and upper troposphere, is frequently used as tracer of different atmospheric processes. Many studies have reported how the variability of 7Be surface concentration is driven by the movement of air masses, atmospheric deposition processes, tropospheric vertical mixing, and the vertical exchange between the stratosphere and the troposphere. 

With an aim to elucidate the influence of teleconnection and tropospheric circulation dynamics, several studies have investigated the influence of the main modes of large scale and regional climate variability in Europe, such as North Atlantic Oscillation (NAO), Arctic Oscillation (AO), East Atlantic (EA), East Atlantic/Western Russia (EA/WR), Scandinavian pattern (SCAND), and Western Mediterranean Oscillation (WeMO) on the surface 7Be activity concentrations. This paper, in particular, presents a summary of recent results achieved by our team working on this topic, focusing firstly at the European scale and then to northern Europe. 

Analysing 7Be surface concentrations measured at 15 European sampling stations over 2005–2014 and combining the calculation of air mass trajectories and cluster analysis with time series of teleconnection indices, we found that extremely high values of the 7Be surface concentrations are largely connected with the negative phase of NAO and We-MO, and with the positive EA phase. These results showed a latitudinal division between the northern and southern sites, with a similar influence of teleconnection patterns, while the sites located in the central part of Europe present a larger variability in the impact of teleconnection patterns. A detailed analysis in northern Europe revealed that extreme 7Be surface concentrations observed during winter were associated with variability of the Arctic polar vortex and linked with high values of the SCAND index.

The findings provide a classification of meteorological conditions associated with high surface 7Be concentrations and thus offer a basis for forecasting these events. In a general view, the findings also help in understanding the seasonal and inter-annual atmospheric variability at different scales and its impact on airborne concentrations of radionuclides and pollutants.",
publisher = "European Meteorological Society",
journal = "European Meteorological Society, Annual Meeting, Bratislava 4–8 September, 2023",
title = "Understanding the variability of 7Be surface concentrations in Europe: the role of teleconnection patterns",
volume = "20",
doi = "https://doi.org/10.5194/ems2023-204"
}

Hernández Ceballos, M. Á., Ajtić, J.,& Brattich, E.. (2023). Understanding the variability of 7Be surface concentrations in Europe: the role of teleconnection patterns. in European Meteorological Society, Annual Meeting, Bratislava 4–8 September, 2023
European Meteorological Society., 20.
https://doi.org/https://doi.org/10.5194/ems2023-204

Hernández Ceballos MÁ, Ajtić J, Brattich E. Understanding the variability of 7Be surface concentrations in Europe: the role of teleconnection patterns. in European Meteorological Society, Annual Meeting, Bratislava 4–8 September, 2023. 2023;20.
doi:https://doi.org/10.5194/ems2023-204 .

Hernández Ceballos, Miguel Ángel, Ajtić, Jelena, Brattich, Erika, "Understanding the variability of 7Be surface concentrations in Europe: the role of teleconnection patterns" in European Meteorological Society, Annual Meeting, Bratislava 4–8 September, 2023, 20 (2023),
https://doi.org/https://doi.org/10.5194/ems2023-204 . .

TY  - CONF
AU  - Sarvan, Darko
AU  - Stratimirović, Đorđe
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Vukanac, Ivana
AU  - Ajtić, Jelena
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3270
AB  - U ovom istraživanju analizirana je fraktalna priroda vremenske serije specifične aktivnosti berilijuma-7 u površinskom sloju atmosfere u Beogradu, Srbija, sa ciljem da se prouči dinamika njene samosličnosti, a s posebnim fokusom na godišnji ciklus. Korišćene su metode vejvlet analize i vremenski zavisne detrendovane pokretne srednje vrednosti radi identifikacije karakterističnih intervala i procene Hurstovih eksponenata.
Podaci o specifičnoj aktivnosti berilijuma-7 preuzeti su iz GRAMON baze podataka, za lokaciju Beograd (44,88 °N; 20,58 °E; 95 m nadmorske visine). Vremenska serija obuhvata 362 mesečna merenja od 1991. do 2022. godine.
Rezultati ukazuju na postojanje izraženog godišnjeg ciklusa u ovoj vremenskoj seriji. Takođe, promene u lokalnom Hurstovom eksponentu otkrivaju varijacije u ponašanju vremenske serije – ona iz umereno korelisanog prelazi u izrazito antikorelisan proces između 2015. i 2020. godine.
Ovaj rezultat biće predmet šire analize koja uključuje i druge lokacije iz GRAMON baze podataka.
PB  - Institut za nuklearne nauke "Vinča"
PB  - Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
T1  - Analiza fraktalne prirode specifične aktivnosti berilijuma-7 u prizemnom sloju atmosfere merene u Beogradu, Srbija (1991-2022)
SP  - 122
EP  - 127
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3270
ER  - 

@conference{
author = "Sarvan, Darko and Stratimirović, Đorđe and Rajačić, Milica and Krneta Nikolić, Jelena and Vukanac, Ivana and Ajtić, Jelena",
year = "2023",
abstract = "U ovom istraživanju analizirana je fraktalna priroda vremenske serije specifične aktivnosti berilijuma-7 u površinskom sloju atmosfere u Beogradu, Srbija, sa ciljem da se prouči dinamika njene samosličnosti, a s posebnim fokusom na godišnji ciklus. Korišćene su metode vejvlet analize i vremenski zavisne detrendovane pokretne srednje vrednosti radi identifikacije karakterističnih intervala i procene Hurstovih eksponenata.
Podaci o specifičnoj aktivnosti berilijuma-7 preuzeti su iz GRAMON baze podataka, za lokaciju Beograd (44,88 °N; 20,58 °E; 95 m nadmorske visine). Vremenska serija obuhvata 362 mesečna merenja od 1991. do 2022. godine.
Rezultati ukazuju na postojanje izraženog godišnjeg ciklusa u ovoj vremenskoj seriji. Takođe, promene u lokalnom Hurstovom eksponentu otkrivaju varijacije u ponašanju vremenske serije – ona iz umereno korelisanog prelazi u izrazito antikorelisan proces između 2015. i 2020. godine.
Ovaj rezultat biće predmet šire analize koja uključuje i druge lokacije iz GRAMON baze podataka.",
publisher = "Institut za nuklearne nauke "Vinča", Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023",
title = "Analiza fraktalne prirode specifične aktivnosti berilijuma-7 u prizemnom sloju atmosfere merene u Beogradu, Srbija (1991-2022)",
pages = "122-127",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3270"
}

Sarvan, D., Stratimirović, Đ., Rajačić, M., Krneta Nikolić, J., Vukanac, I.,& Ajtić, J.. (2023). Analiza fraktalne prirode specifične aktivnosti berilijuma-7 u prizemnom sloju atmosfere merene u Beogradu, Srbija (1991-2022). in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
Institut za nuklearne nauke "Vinča"., 122-127.
https://hdl.handle.net/21.15107/rcub_veterinar_3270

Sarvan D, Stratimirović Đ, Rajačić M, Krneta Nikolić J, Vukanac I, Ajtić J. Analiza fraktalne prirode specifične aktivnosti berilijuma-7 u prizemnom sloju atmosfere merene u Beogradu, Srbija (1991-2022). in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023. 2023;:122-127.
https://hdl.handle.net/21.15107/rcub_veterinar_3270 .

Sarvan, Darko, Stratimirović, Đorđe, Rajačić, Milica, Krneta Nikolić, Jelena, Vukanac, Ivana, Ajtić, Jelena, "Analiza fraktalne prirode specifične aktivnosti berilijuma-7 u prizemnom sloju atmosfere merene u Beogradu, Srbija (1991-2022)" in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023 (2023):122-127,
https://hdl.handle.net/21.15107/rcub_veterinar_3270 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Vukanac, Ivana
AU  - Ilić, Zorana
AU  - Vidic, Alfred
AU  - Didović, Irma
AU  - Janushesk, Jovan
AU  - Anusheva, Jordanka
AU  - Dimovska, Snežana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Vodenik, Branko
AU  - Zorko, Benjamin
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3269
AB  - U radu je predstavljena novoformirana baza podataka GRAMON (Ground Air Radioactivity Monitoring) koja sadrži rezultate merenja radioaktivnosti u vazduhu na sedam lokacija: Beograd (Srbija), Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna Gora), Skoplje i Bitola (Severna Makedonija). Iz baze su za sve lokacije preuzete mesečne vrednosti specifične aktivnosti prirodnog radionuklida berilijuma-7 i potom analizirani deskriptivni statistički parametri od januara 2010. do decembra 2019. godine.
Srednje vrednosti specifične aktivnosti berilijuma-7 tokom ovog perioda kreću se od 3,32 mBq/m3 u Sarajevu do 5,93 mBq/m3 u Beogradu. Koeficijent varijacije najmanji je za Krško (37,7%) i Sarajevo (38,6%), a najveći za Beograd (54,8%) i Bitolu (72,4%). Ipak, 3σ-opsezi svih sedam vremenskih serija se preklapaju. U daljoj statističkoj analizi biće ispitano da li među ovim vremenskim serijama postoje značajne razlike.
PB  - Institut za nuklearne nauke „Vinča“
PB  - Društvo za zaštitu od zračenja Srbije i Srne Gore
C3  - XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
T1  - GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu
SP  - 30
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3269
ER  - 

@conference{
author = "Ajtić, Jelena and Rajačić, Milica and Krneta Nikolić, Jelena and Vukanac, Ivana and Ilić, Zorana and Vidic, Alfred and Didović, Irma and Janushesk, Jovan and Anusheva, Jordanka and Dimovska, Snežana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Vodenik, Branko and Zorko, Benjamin",
year = "2023",
abstract = "U radu je predstavljena novoformirana baza podataka GRAMON (Ground Air Radioactivity Monitoring) koja sadrži rezultate merenja radioaktivnosti u vazduhu na sedam lokacija: Beograd (Srbija), Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna Gora), Skoplje i Bitola (Severna Makedonija). Iz baze su za sve lokacije preuzete mesečne vrednosti specifične aktivnosti prirodnog radionuklida berilijuma-7 i potom analizirani deskriptivni statistički parametri od januara 2010. do decembra 2019. godine.
Srednje vrednosti specifične aktivnosti berilijuma-7 tokom ovog perioda kreću se od 3,32 mBq/m3 u Sarajevu do 5,93 mBq/m3 u Beogradu. Koeficijent varijacije najmanji je za Krško (37,7%) i Sarajevo (38,6%), a najveći za Beograd (54,8%) i Bitolu (72,4%). Ipak, 3σ-opsezi svih sedam vremenskih serija se preklapaju. U daljoj statističkoj analizi biće ispitano da li među ovim vremenskim serijama postoje značajne razlike.",
publisher = "Institut za nuklearne nauke „Vinča“, Društvo za zaštitu od zračenja Srbije i Srne Gore",
journal = "XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023",
title = "GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu",
pages = "30-35",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3269"
}

Ajtić, J., Rajačić, M., Krneta Nikolić, J., Vukanac, I., Ilić, Z., Vidic, A., Didović, I., Janushesk, J., Anusheva, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S., Vodenik, B.,& Zorko, B.. (2023). GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu. in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023
Institut za nuklearne nauke „Vinča“., 30-35.
https://hdl.handle.net/21.15107/rcub_veterinar_3269

Ajtić J, Rajačić M, Krneta Nikolić J, Vukanac I, Ilić Z, Vidic A, Didović I, Janushesk J, Anusheva J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Vodenik B, Zorko B. GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu. in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023. 2023;:30-35.
https://hdl.handle.net/21.15107/rcub_veterinar_3269 .

Ajtić, Jelena, Rajačić, Milica, Krneta Nikolić, Jelena, Vukanac, Ivana, Ilić, Zorana, Vidic, Alfred, Didović, Irma, Janushesk, Jovan, Anusheva, Jordanka, Dimovska, Snežana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Vodenik, Branko, Zorko, Benjamin, "GRAMON baza podataka: Desetogodišnja merenja specifične aktivnosti berilijuma-7 u vazduhu" in XXXII Simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore, Budva, 4 - 6. oktobar 2023 (2023):30-35,
https://hdl.handle.net/21.15107/rcub_veterinar_3269 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Sarvan, Darko
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Vukanac, Ivana
AU  - Ilić, Zorana
AU  - Vidic, Alfred
AU  - Didović, Irma
AU  - Janušeski, Jovan
AU  - Anusheva, Jordanka
AU  - Dimovska, Snezana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Vodenik, Branko
AU  - Zorko, Benjamin
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3003
AB  - Ground Air Radioactivity Monitoring (GRAMON) database is a recently established collection containing activity concentrations of gamma emitters in aerosol samples. The measurements come
from Serbia (sampling site Belgrade), Slovenia (sampling sites Ljubljana and Krško), Bosnia and
Herzegovina (sampling site Sarajevo), Montenegro (sampling site Podgorica), and North Macedonia (sampling sites Skopje and Bitola), thus covering the northern and central parts of the Balkan Peninsula.
As a database arising from the monitoring programmes in several countries, GRAMON is not
fully homogeneous in terms of the radionuclides and time periods studied. For example, the
beryllium-7 records are available for all sampling sites, while the lead-210 records only in Serbia,
Slovenia, and Bosnia and Herzegovina. The time series for Serbia and Slovenia began in 1991, for
Montenegro and North Macedonia in 2008, and for Bosnia and Herzegovina in 2010.
However, sampling, sample preparation, and measurement procedures across the sites and
laboratories are similar. In brief, aerosol samples are collected on filter papers using air samplers.
Activity concentrations of radionuclides are determined by standard gamma spectrometry using
high-purity germanium detectors. The time series contain monthly mean activity concentrations.
Since only some of the GRAMON records have been previously published, this database provides
a source for radioactivity research in the region that has been underrepresented in large-scale
studies. We further hope to expand the number of contributing laboratories and cover a wider region of Europe, especially its southern and eastern parts.
PB  - Niš : Sievert Association
C3  - International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023
T1  - Introducing a regional database of radioactivity in the air – GRAMON
SP  - 91
EP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3003
ER  - 

@conference{
author = "Ajtić, Jelena and Sarvan, Darko and Rajačić, Milica and Krneta Nikolić, Jelena and Vukanac, Ivana and Ilić, Zorana and Vidic, Alfred and Didović, Irma and Janušeski, Jovan and Anusheva, Jordanka and Dimovska, Snezana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Vodenik, Branko and Zorko, Benjamin",
year = "2023",
abstract = "Ground Air Radioactivity Monitoring (GRAMON) database is a recently established collection containing activity concentrations of gamma emitters in aerosol samples. The measurements come
from Serbia (sampling site Belgrade), Slovenia (sampling sites Ljubljana and Krško), Bosnia and
Herzegovina (sampling site Sarajevo), Montenegro (sampling site Podgorica), and North Macedonia (sampling sites Skopje and Bitola), thus covering the northern and central parts of the Balkan Peninsula.
As a database arising from the monitoring programmes in several countries, GRAMON is not
fully homogeneous in terms of the radionuclides and time periods studied. For example, the
beryllium-7 records are available for all sampling sites, while the lead-210 records only in Serbia,
Slovenia, and Bosnia and Herzegovina. The time series for Serbia and Slovenia began in 1991, for
Montenegro and North Macedonia in 2008, and for Bosnia and Herzegovina in 2010.
However, sampling, sample preparation, and measurement procedures across the sites and
laboratories are similar. In brief, aerosol samples are collected on filter papers using air samplers.
Activity concentrations of radionuclides are determined by standard gamma spectrometry using
high-purity germanium detectors. The time series contain monthly mean activity concentrations.
Since only some of the GRAMON records have been previously published, this database provides
a source for radioactivity research in the region that has been underrepresented in large-scale
studies. We further hope to expand the number of contributing laboratories and cover a wider region of Europe, especially its southern and eastern parts.",
publisher = "Niš : Sievert Association",
journal = "International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023",
title = "Introducing a regional database of radioactivity in the air – GRAMON",
pages = "91-91",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3003"
}

Ajtić, J., Sarvan, D., Rajačić, M., Krneta Nikolić, J., Vukanac, I., Ilić, Z., Vidic, A., Didović, I., Janušeski, J., Anusheva, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S., Vodenik, B.,& Zorko, B.. (2023). Introducing a regional database of radioactivity in the air – GRAMON. in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023
Niš : Sievert Association., 91-91.
https://hdl.handle.net/21.15107/rcub_veterinar_3003

Ajtić J, Sarvan D, Rajačić M, Krneta Nikolić J, Vukanac I, Ilić Z, Vidic A, Didović I, Janušeski J, Anusheva J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Vodenik B, Zorko B. Introducing a regional database of radioactivity in the air – GRAMON. in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023. 2023;:91-91.
https://hdl.handle.net/21.15107/rcub_veterinar_3003 .

Ajtić, Jelena, Sarvan, Darko, Rajačić, Milica, Krneta Nikolić, Jelena, Vukanac, Ivana, Ilić, Zorana, Vidic, Alfred, Didović, Irma, Janušeski, Jovan, Anusheva, Jordanka, Dimovska, Snezana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Vodenik, Branko, Zorko, Benjamin, "Introducing a regional database of radioactivity in the air – GRAMON" in International Conference on Radiation Applications RAP, Anavyssos, May 29 - June 2, 2023 (2023):91-91,
https://hdl.handle.net/21.15107/rcub_veterinar_3003 .

TY  - CONF
AU  - Raković, Ana
AU  - Krčmar, Maja
AU  - Ajtić, Jelena
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2694
AB  - Activity concentration of beryllium-7 (Be-7) in the surface air is considered a good tracer of atmospheric processes. Promptly after its production, this radionuclide attaches to aerosols and then subsides to the surface where its concentrations depend on the aerosol removal processes, e.g. precipitation, and atmospheric transport drivers, e.g. temperature and pressure. Our study investigates whether a set of five variables: mean temperature, minimum temperature, maximum temperature, precipitation and atmospheric pressure can account for the Be-7 concentration variability at the surface.
We use the Be-7 activity concentration from the Radioactivity Environmental Monitoring data bank
maintained by the Joint Research Centre in Ispra, Italy. We look into two locations, Kista (59.40 °N; 17.93 °E; 16 m a.s.l.) in Sweden and Vienna (48.22 °N; 16.35 °E; 193 m a.s.l.) in Austria, between February 1987 and December 2014, when the sampling was performed on a weekly basis. The meteorological parameters are extracted from the E-OBS gridded climatology, version 15, using bilinear interpolation.
For each location, we perform Factor Analysis. The calculations are done in R, an open-source software for statistical computing and graphics.
Factor Analysis assumes that a given set can be modelled as a linear combination of unobserved
uncorrelated factors. Loadings are contributions of each original variable to a factor; variables with high loadings are well explained by the factor. The total data variability has two terms: communality arising from the linear combinations of the factors, and uniqueness not explained by the factors. The model is appropriate if the uniqueness is low. The null hypothesis in Factor Analysis is that the chosen number of factors is sufficient to explain the variability of the data; the hypothesis is rejected if the calculated p-value is less than 0.05.
We perform Factor Analysis by choosing 1, 2 and 3 factors. Results for both locations give similar results.
One factor (F1): Temperatures show very high loadings (greater than 0.98) making F1 identical to a temperature variable in the set. The loading of the Be-7 concentration is 0.39 and 0.68 for Kista and Vienna, respectively. The loadings of precipitation and atmospheric pressure are less than 0.4. With the low Be-7 concentration loading, its uniqueness is large, giving temperature, as a single contributing factor, insufficient to explain well the data’s features. This is corroborated by the p-value=0.
Two factors (F1 and F2): The sum of square loadings for F1 is greater than 3 making it significant, unlike F2 (a factor is significant if the sum of square loadings is greater than 1). The Be-7 concentration and temperatures have high loadings for F1, but precipitation has a negligible F1-loading; precipitation has a significant loading for F2, while the pressure has similar loadings for F1 and F2. Although the uniqueness of the Be-7 concentration decreases with two factors, p-value is again very low, essentially zero.
Three factors (F1, F2 and F3): Again, F1 with the highest temperature loadings can be identified as a temperature variable. The loading of atmospheric pressure is the highest for F2. Both F1 and F2 are significant, while F3 is insignificant. Also, we cannot assess the validity of the null hypothesis regarding the use of the 3-factor model, because this model has zero degrees of freedom, thus no p-value can be calculated. Nevertheless, if we look into the uniqueness of the Be-7 concentration, its lowest values are given by this model.
In conclusion, all variables exhibit a variance that cannot be captured by up to 3 factors. Still, the Be-7 concentration seems to be strongly correlated with the temperature variables in all the investigated models. But, the uniqueness of the Be-7 concentration remains high, implying that the chosen set of variables lacks an important observable that could help explain the behaviour of the Be-7 concentration at the surface.
PB  - Faculty of Electronic Engineering, Niš, Serbia
C3  - ELICSIR Project Symposium, , Niš, January 25-27, 2023
T1  - The uniqueness of the beryllium-7 time series in Kista and Vienna over 1987–2014
SP  - 29
EP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2694
ER  - 

@conference{
author = "Raković, Ana and Krčmar, Maja and Ajtić, Jelena",
year = "2023",
abstract = "Activity concentration of beryllium-7 (Be-7) in the surface air is considered a good tracer of atmospheric processes. Promptly after its production, this radionuclide attaches to aerosols and then subsides to the surface where its concentrations depend on the aerosol removal processes, e.g. precipitation, and atmospheric transport drivers, e.g. temperature and pressure. Our study investigates whether a set of five variables: mean temperature, minimum temperature, maximum temperature, precipitation and atmospheric pressure can account for the Be-7 concentration variability at the surface.
We use the Be-7 activity concentration from the Radioactivity Environmental Monitoring data bank
maintained by the Joint Research Centre in Ispra, Italy. We look into two locations, Kista (59.40 °N; 17.93 °E; 16 m a.s.l.) in Sweden and Vienna (48.22 °N; 16.35 °E; 193 m a.s.l.) in Austria, between February 1987 and December 2014, when the sampling was performed on a weekly basis. The meteorological parameters are extracted from the E-OBS gridded climatology, version 15, using bilinear interpolation.
For each location, we perform Factor Analysis. The calculations are done in R, an open-source software for statistical computing and graphics.
Factor Analysis assumes that a given set can be modelled as a linear combination of unobserved
uncorrelated factors. Loadings are contributions of each original variable to a factor; variables with high loadings are well explained by the factor. The total data variability has two terms: communality arising from the linear combinations of the factors, and uniqueness not explained by the factors. The model is appropriate if the uniqueness is low. The null hypothesis in Factor Analysis is that the chosen number of factors is sufficient to explain the variability of the data; the hypothesis is rejected if the calculated p-value is less than 0.05.
We perform Factor Analysis by choosing 1, 2 and 3 factors. Results for both locations give similar results.
One factor (F1): Temperatures show very high loadings (greater than 0.98) making F1 identical to a temperature variable in the set. The loading of the Be-7 concentration is 0.39 and 0.68 for Kista and Vienna, respectively. The loadings of precipitation and atmospheric pressure are less than 0.4. With the low Be-7 concentration loading, its uniqueness is large, giving temperature, as a single contributing factor, insufficient to explain well the data’s features. This is corroborated by the p-value=0.
Two factors (F1 and F2): The sum of square loadings for F1 is greater than 3 making it significant, unlike F2 (a factor is significant if the sum of square loadings is greater than 1). The Be-7 concentration and temperatures have high loadings for F1, but precipitation has a negligible F1-loading; precipitation has a significant loading for F2, while the pressure has similar loadings for F1 and F2. Although the uniqueness of the Be-7 concentration decreases with two factors, p-value is again very low, essentially zero.
Three factors (F1, F2 and F3): Again, F1 with the highest temperature loadings can be identified as a temperature variable. The loading of atmospheric pressure is the highest for F2. Both F1 and F2 are significant, while F3 is insignificant. Also, we cannot assess the validity of the null hypothesis regarding the use of the 3-factor model, because this model has zero degrees of freedom, thus no p-value can be calculated. Nevertheless, if we look into the uniqueness of the Be-7 concentration, its lowest values are given by this model.
In conclusion, all variables exhibit a variance that cannot be captured by up to 3 factors. Still, the Be-7 concentration seems to be strongly correlated with the temperature variables in all the investigated models. But, the uniqueness of the Be-7 concentration remains high, implying that the chosen set of variables lacks an important observable that could help explain the behaviour of the Be-7 concentration at the surface.",
publisher = "Faculty of Electronic Engineering, Niš, Serbia",
journal = "ELICSIR Project Symposium, , Niš, January 25-27, 2023",
title = "The uniqueness of the beryllium-7 time series in Kista and Vienna over 1987–2014",
pages = "29-29",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2694"
}

Raković, A., Krčmar, M.,& Ajtić, J.. (2023). The uniqueness of the beryllium-7 time series in Kista and Vienna over 1987–2014. in ELICSIR Project Symposium, , Niš, January 25-27, 2023
Faculty of Electronic Engineering, Niš, Serbia., 29-29.
https://hdl.handle.net/21.15107/rcub_veterinar_2694

Raković A, Krčmar M, Ajtić J. The uniqueness of the beryllium-7 time series in Kista and Vienna over 1987–2014. in ELICSIR Project Symposium, , Niš, January 25-27, 2023. 2023;:29-29.
https://hdl.handle.net/21.15107/rcub_veterinar_2694 .

Raković, Ana, Krčmar, Maja, Ajtić, Jelena, "The uniqueness of the beryllium-7 time series in Kista and Vienna over 1987–2014" in ELICSIR Project Symposium, , Niš, January 25-27, 2023 (2023):29-29,
https://hdl.handle.net/21.15107/rcub_veterinar_2694 .

TY  - JOUR
AU  - Janjić, Filip
AU  - Beletić, Anđelo
AU  - Radaković, Milena
AU  - Spariosu, Kristina
AU  - Diklić, Miloš
AU  - Francuski Andrić, Jelena
AU  - Radonjić, Vladimir
AU  - Ajtić, Jelena
AU  - Kovačević-Filipović, Milica
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2338
AB  - The highest number of acute Babesia canis cases in dogs is recorded over the February-May (Feb-May) period, which also represents the optimal climate conditions for tick activity in Belgrade, Serbia. A possibility that the acute phase response is more intense in dogs developing the disease in the Feb-May period compared with the response in other time periods of the year was tested. A total of 63 client-owned dogs with acute B. canis infection were enrolled and the routine hematology and biochemistry parameters-serum amyloid A (SAA), IgG against B. canis, level of parasitemia, ceruloplasmin (CER), paraoxonase-1 (PON-1), and fibrinogen-were measured. Acute phase indexes (API) were calculated as (SAA×CER)/(Iron×PON-1) and (SAA×CER)/(Albumin×Iron). Statistics included Kruskal-Wallis test and logistic regression analysis. The results showed that in the Feb-May period, the following parameters were lower: creatinine, albumin, iron, and level of parasitemia. Furthermore, increased API values were more probable in the Feb-May than in the other periods. Together, higher acute phase response intensity and presumptive hemodilution in the Feb-May period indicate a more acute course of B. canis infection than in other time periods of the year.
PB  - Springer
T2  - International Journal of Biometeorology
T1  - Seasonal differences in the intensity of acute phase response in dogs infected with Babesia canis
DO  - 10.1007/s00484-021-02228-4
ER  - 

@article{
author = "Janjić, Filip and Beletić, Anđelo and Radaković, Milena and Spariosu, Kristina and Diklić, Miloš and Francuski Andrić, Jelena and Radonjić, Vladimir and Ajtić, Jelena and Kovačević-Filipović, Milica",
year = "2022",
abstract = "The highest number of acute Babesia canis cases in dogs is recorded over the February-May (Feb-May) period, which also represents the optimal climate conditions for tick activity in Belgrade, Serbia. A possibility that the acute phase response is more intense in dogs developing the disease in the Feb-May period compared with the response in other time periods of the year was tested. A total of 63 client-owned dogs with acute B. canis infection were enrolled and the routine hematology and biochemistry parameters-serum amyloid A (SAA), IgG against B. canis, level of parasitemia, ceruloplasmin (CER), paraoxonase-1 (PON-1), and fibrinogen-were measured. Acute phase indexes (API) were calculated as (SAA×CER)/(Iron×PON-1) and (SAA×CER)/(Albumin×Iron). Statistics included Kruskal-Wallis test and logistic regression analysis. The results showed that in the Feb-May period, the following parameters were lower: creatinine, albumin, iron, and level of parasitemia. Furthermore, increased API values were more probable in the Feb-May than in the other periods. Together, higher acute phase response intensity and presumptive hemodilution in the Feb-May period indicate a more acute course of B. canis infection than in other time periods of the year.",
publisher = "Springer",
journal = "International Journal of Biometeorology",
title = "Seasonal differences in the intensity of acute phase response in dogs infected with Babesia canis",
doi = "10.1007/s00484-021-02228-4"
}

Janjić, F., Beletić, A., Radaković, M., Spariosu, K., Diklić, M., Francuski Andrić, J., Radonjić, V., Ajtić, J.,& Kovačević-Filipović, M.. (2022). Seasonal differences in the intensity of acute phase response in dogs infected with Babesia canis. in International Journal of Biometeorology
Springer..
https://doi.org/10.1007/s00484-021-02228-4

Janjić F, Beletić A, Radaković M, Spariosu K, Diklić M, Francuski Andrić J, Radonjić V, Ajtić J, Kovačević-Filipović M. Seasonal differences in the intensity of acute phase response in dogs infected with Babesia canis. in International Journal of Biometeorology. 2022;.
doi:10.1007/s00484-021-02228-4 .

Janjić, Filip, Beletić, Anđelo, Radaković, Milena, Spariosu, Kristina, Diklić, Miloš, Francuski Andrić, Jelena, Radonjić, Vladimir, Ajtić, Jelena, Kovačević-Filipović, Milica, "Seasonal differences in the intensity of acute phase response in dogs infected with Babesia canis" in International Journal of Biometeorology (2022),
https://doi.org/10.1007/s00484-021-02228-4 . .

TY  - CONF
AU  - Janjić, Filip
AU  - Beletić, Anđelo
AU  - Radaković, Milena
AU  - Spariosu, Kristina
AU  - Francuski Andrić, Jelena
AU  - Ajtić, Jelena
AU  - Kovačević-Filipović, Milica
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2488
AB  - Background: Canine babesiosis is a disease with a seasonal character. We have
previously observed that in Belgrade, the capital of the Republic of Serbia, 60% of
cases with the acute-phase response (APR) give a notable maximum between mid-
February and May, the so-called “high season”. The other two peak seasons with
less pronounced maxima are in winter, from January to mid-February, and in
autumn, from October to December. Objectives: Based on clinical observations, we
postulate that dogs infected with B. canis in the “high season” develop a more
intense APR than dogs in the other two seasons. Material and Methods: To test this
hypothesis, we compare the relative parasite load and the level of acute-phase
proteins and reactants, their indexes (calculated as a combination of
concentrations of fast and slow positive, and fast and slow negative acute phase
reactants), as well as the concentration of coagulation factors, complete blood
count, and biochemistry among dogs that developed the disease in the autumn,
winter, and “high season”. Results: The relative parasite load is the lowest, and APR
Indexes are the highest in dogs infected in “high season”. These findings are
accompanied by relatively low creatinine and urea, implying that dogs in “high
season” had hemodilution, thus further suggesting short incubation. Unlike other
acute-phase proteins, fibrinogen showed the lowest concentration in “high
season”. Conclusion: Future research will help unveil the connection between
more intense APR and relatively low parasite load and fibrinogen concentration.
C3  - 24th Annual Congress of the European Society of Veterinary Clinical Pathology, Belgrade, Serbia, October 5-8
T1  - Canine babesiosis in different seasons - a fertile ground for multiple questions
SP  - 78
EP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2488
ER  - 

@conference{
author = "Janjić, Filip and Beletić, Anđelo and Radaković, Milena and Spariosu, Kristina and Francuski Andrić, Jelena and Ajtić, Jelena and Kovačević-Filipović, Milica",
year = "2022",
abstract = "Background: Canine babesiosis is a disease with a seasonal character. We have
previously observed that in Belgrade, the capital of the Republic of Serbia, 60% of
cases with the acute-phase response (APR) give a notable maximum between mid-
February and May, the so-called “high season”. The other two peak seasons with
less pronounced maxima are in winter, from January to mid-February, and in
autumn, from October to December. Objectives: Based on clinical observations, we
postulate that dogs infected with B. canis in the “high season” develop a more
intense APR than dogs in the other two seasons. Material and Methods: To test this
hypothesis, we compare the relative parasite load and the level of acute-phase
proteins and reactants, their indexes (calculated as a combination of
concentrations of fast and slow positive, and fast and slow negative acute phase
reactants), as well as the concentration of coagulation factors, complete blood
count, and biochemistry among dogs that developed the disease in the autumn,
winter, and “high season”. Results: The relative parasite load is the lowest, and APR
Indexes are the highest in dogs infected in “high season”. These findings are
accompanied by relatively low creatinine and urea, implying that dogs in “high
season” had hemodilution, thus further suggesting short incubation. Unlike other
acute-phase proteins, fibrinogen showed the lowest concentration in “high
season”. Conclusion: Future research will help unveil the connection between
more intense APR and relatively low parasite load and fibrinogen concentration.",
journal = "24th Annual Congress of the European Society of Veterinary Clinical Pathology, Belgrade, Serbia, October 5-8",
title = "Canine babesiosis in different seasons - a fertile ground for multiple questions",
pages = "78-79",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2488"
}

Janjić, F., Beletić, A., Radaković, M., Spariosu, K., Francuski Andrić, J., Ajtić, J.,& Kovačević-Filipović, M.. (2022). Canine babesiosis in different seasons - a fertile ground for multiple questions. in 24th Annual Congress of the European Society of Veterinary Clinical Pathology, Belgrade, Serbia, October 5-8, 78-79.
https://hdl.handle.net/21.15107/rcub_veterinar_2488

Janjić F, Beletić A, Radaković M, Spariosu K, Francuski Andrić J, Ajtić J, Kovačević-Filipović M. Canine babesiosis in different seasons - a fertile ground for multiple questions. in 24th Annual Congress of the European Society of Veterinary Clinical Pathology, Belgrade, Serbia, October 5-8. 2022;:78-79.
https://hdl.handle.net/21.15107/rcub_veterinar_2488 .

Janjić, Filip, Beletić, Anđelo, Radaković, Milena, Spariosu, Kristina, Francuski Andrić, Jelena, Ajtić, Jelena, Kovačević-Filipović, Milica, "Canine babesiosis in different seasons - a fertile ground for multiple questions" in 24th Annual Congress of the European Society of Veterinary Clinical Pathology, Belgrade, Serbia, October 5-8 (2022):78-79,
https://hdl.handle.net/21.15107/rcub_veterinar_2488 .

TY  - CONF
AU  - Janjić, Filip
AU  - Sarvan, Darko
AU  - Tomanović, Snežana
AU  - Krstić, Vanja
AU  - Radonjić, Vladimir
AU  - Kovačević-Filipović, Milica
AU  - Ajtić, Jelena
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2487
AB  - Background: Canine babesiosis, a tick-borne disease caused by Babesia canis,
shows a seasonality whose relationship with local weather conditions has not been
fully investigated. Objectives: Meteorological conditions can favour the tick-vector
activity, and thus lead to an increased number of cases of canine babesiosis. Hence,
our study looks into the link between the number of recorded cases, on the one
hand, and temperature and relative humidity on the other with an aim to quantify
their correlations. Material and Methods: Over 2013–2016, the data were
collected in Belgrade, the capital of the Republic of Serbia. The meteorological
parameters were obtained from the Republic Hydrometeorological Service of
Serbia. The analysis includes correlations with a time lag, given in number of weeks,
which shifts corresponding correlation pairs and shows a delayed effect of weather
conditions. The time lag ranges between 0 and 52. Results: Canine babesiosis
occurrence shows a pronounced maximum in the spring and a less marked one in
the autumn. For the spring period, statistically significant correlation coefficients
imply that over one year prior to the disease spring peak, temperature is more
strongly linked with the number of cases than relative humidity. Conclusion:
Temperature and relative humidity, through their influence on population of
infected ticks, seem to be important meteorological drivers of the spring maximum
of canine babesios in Belgrade. Further understanding of this interplay can help
better contain the disease, and project its possible spread to other regions
prompted by climate change.
C3  - 24th Annual Congress of the European Society of Veterinary Clinical Pathology,  Belgrade, Serbia, October 5-8
T1  - Signature of weather conditions in the canine babesiosis spring peak in Belgrade, Serbia
SP  - 69
EP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2487
ER  - 

@conference{
author = "Janjić, Filip and Sarvan, Darko and Tomanović, Snežana and Krstić, Vanja and Radonjić, Vladimir and Kovačević-Filipović, Milica and Ajtić, Jelena",
year = "2022",
abstract = "Background: Canine babesiosis, a tick-borne disease caused by Babesia canis,
shows a seasonality whose relationship with local weather conditions has not been
fully investigated. Objectives: Meteorological conditions can favour the tick-vector
activity, and thus lead to an increased number of cases of canine babesiosis. Hence,
our study looks into the link between the number of recorded cases, on the one
hand, and temperature and relative humidity on the other with an aim to quantify
their correlations. Material and Methods: Over 2013–2016, the data were
collected in Belgrade, the capital of the Republic of Serbia. The meteorological
parameters were obtained from the Republic Hydrometeorological Service of
Serbia. The analysis includes correlations with a time lag, given in number of weeks,
which shifts corresponding correlation pairs and shows a delayed effect of weather
conditions. The time lag ranges between 0 and 52. Results: Canine babesiosis
occurrence shows a pronounced maximum in the spring and a less marked one in
the autumn. For the spring period, statistically significant correlation coefficients
imply that over one year prior to the disease spring peak, temperature is more
strongly linked with the number of cases than relative humidity. Conclusion:
Temperature and relative humidity, through their influence on population of
infected ticks, seem to be important meteorological drivers of the spring maximum
of canine babesios in Belgrade. Further understanding of this interplay can help
better contain the disease, and project its possible spread to other regions
prompted by climate change.",
journal = "24th Annual Congress of the European Society of Veterinary Clinical Pathology,  Belgrade, Serbia, October 5-8",
title = "Signature of weather conditions in the canine babesiosis spring peak in Belgrade, Serbia",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2487"
}

Janjić, F., Sarvan, D., Tomanović, S., Krstić, V., Radonjić, V., Kovačević-Filipović, M.,& Ajtić, J.. (2022). Signature of weather conditions in the canine babesiosis spring peak in Belgrade, Serbia. in 24th Annual Congress of the European Society of Veterinary Clinical Pathology,  Belgrade, Serbia, October 5-8, 69-69.
https://hdl.handle.net/21.15107/rcub_veterinar_2487

Janjić F, Sarvan D, Tomanović S, Krstić V, Radonjić V, Kovačević-Filipović M, Ajtić J. Signature of weather conditions in the canine babesiosis spring peak in Belgrade, Serbia. in 24th Annual Congress of the European Society of Veterinary Clinical Pathology,  Belgrade, Serbia, October 5-8. 2022;:69-69.
https://hdl.handle.net/21.15107/rcub_veterinar_2487 .

Janjić, Filip, Sarvan, Darko, Tomanović, Snežana, Krstić, Vanja, Radonjić, Vladimir, Kovačević-Filipović, Milica, Ajtić, Jelena, "Signature of weather conditions in the canine babesiosis spring peak in Belgrade, Serbia" in 24th Annual Congress of the European Society of Veterinary Clinical Pathology,  Belgrade, Serbia, October 5-8 (2022):69-69,
https://hdl.handle.net/21.15107/rcub_veterinar_2487 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Mitrović, Branislava
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2478
AB  - Due to their therapeutic and pharmacologic properties, medicinal herbs have a long history of use
around the world. The objective of this study is to determine the activity concentration of natural
(
40K, 226Ra, 232Th, and 238U) and artificial (
137Cs) radionuclides in samples of herbal teas from Serbia.
The samples of the following commercially available teas: dandelion leaf (Taraxaci folium),
mulberry leaf (Mori nigrae folium), ground ivy (Glechoma hederacea), sweet wormwood (Artemisia
annua), rose hip (Cynosbati fructus), wall germander (Teucrium chamaedrys), and thyme (Thymus
vulgaris), were collected in Serbia in 2021. The radionuclides’ activity concentrations were
determined using gamma spectrometry.
The results show that among the natural radionuclides,
40K is dominant (316–1616 Bq/kg), while
the activity concentration of
226Ra and 232Th ranges from below the minimum detectable activity
(MDA) to 12.3 Bq/kg, and below the MDA to 13.4 Bq/kg, respectively. In all investigated samples, the
238U activity concentration is below the MDA. Cesium-137 is detected in five out of seven analysed
samples (0.3–2.9 Bq/kg).
The results indicate that 137Cs, released into the atmosphere after the Chernobyl accident in 1986,
is still present in the environment of Serbia. Nevertheless, according to the Serbian legislation
regulating the maximum permitted levels of radionuclides in foodstuffs, all of the investigated
samples of herbal teas are safe for human consumption.
PB  - Niš : Sievert Association
C3  - International conference on radiation applications (RAP 2022)
T1  - Natural and artificial radionuclides in herbal teas from Serbia
SP  - 53
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2478
ER  - 

@conference{
author = "Ajtić, Jelena and Mitrović, Branislava",
year = "2022",
abstract = "Due to their therapeutic and pharmacologic properties, medicinal herbs have a long history of use
around the world. The objective of this study is to determine the activity concentration of natural
(
40K, 226Ra, 232Th, and 238U) and artificial (
137Cs) radionuclides in samples of herbal teas from Serbia.
The samples of the following commercially available teas: dandelion leaf (Taraxaci folium),
mulberry leaf (Mori nigrae folium), ground ivy (Glechoma hederacea), sweet wormwood (Artemisia
annua), rose hip (Cynosbati fructus), wall germander (Teucrium chamaedrys), and thyme (Thymus
vulgaris), were collected in Serbia in 2021. The radionuclides’ activity concentrations were
determined using gamma spectrometry.
The results show that among the natural radionuclides,
40K is dominant (316–1616 Bq/kg), while
the activity concentration of
226Ra and 232Th ranges from below the minimum detectable activity
(MDA) to 12.3 Bq/kg, and below the MDA to 13.4 Bq/kg, respectively. In all investigated samples, the
238U activity concentration is below the MDA. Cesium-137 is detected in five out of seven analysed
samples (0.3–2.9 Bq/kg).
The results indicate that 137Cs, released into the atmosphere after the Chernobyl accident in 1986,
is still present in the environment of Serbia. Nevertheless, according to the Serbian legislation
regulating the maximum permitted levels of radionuclides in foodstuffs, all of the investigated
samples of herbal teas are safe for human consumption.",
publisher = "Niš : Sievert Association",
journal = "International conference on radiation applications (RAP 2022)",
title = "Natural and artificial radionuclides in herbal teas from Serbia",
pages = "53",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2478"
}

Ajtić, J.,& Mitrović, B.. (2022). Natural and artificial radionuclides in herbal teas from Serbia. in International conference on radiation applications (RAP 2022)
Niš : Sievert Association., 53.
https://hdl.handle.net/21.15107/rcub_veterinar_2478

Ajtić J, Mitrović B. Natural and artificial radionuclides in herbal teas from Serbia. in International conference on radiation applications (RAP 2022). 2022;:53.
https://hdl.handle.net/21.15107/rcub_veterinar_2478 .

Ajtić, Jelena, Mitrović, Branislava, "Natural and artificial radionuclides in herbal teas from Serbia" in International conference on radiation applications (RAP 2022) (2022):53,
https://hdl.handle.net/21.15107/rcub_veterinar_2478 .

TY  - JOUR
AU  - Vićentijević, Mihajlo
AU  - Pavlović, Maja
AU  - Vuković, Dubravka
AU  - Živanov, Dragan
AU  - Ajtić, Jelena
AU  - Mitrović, Branislava
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2508
AB  - Radiocesium content in wild boar meat, originating from Serbia,
was determined. It ranged from 0.01 to 1.11 Bq/kg and 0.09 to 5.18 Bq/kg, for 
134Cs and 137Cs, respectively. The corresponding average effective dose equivalents ranged
from 0.003 to 0.337 μSv, thus do not represent a health risk for humans.
PB  - Editura Academiei Romane
T2  - Romanian Reports in Physics
T1  - Radiocesium content in wild boar meat originating from Serbia
VL  - 74
IS  - 710
SP  - 1
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2508
ER  - 

@article{
author = "Vićentijević, Mihajlo and Pavlović, Maja and Vuković, Dubravka and Živanov, Dragan and Ajtić, Jelena and Mitrović, Branislava",
year = "2022",
abstract = "Radiocesium content in wild boar meat, originating from Serbia,
was determined. It ranged from 0.01 to 1.11 Bq/kg and 0.09 to 5.18 Bq/kg, for 
134Cs and 137Cs, respectively. The corresponding average effective dose equivalents ranged
from 0.003 to 0.337 μSv, thus do not represent a health risk for humans.",
publisher = "Editura Academiei Romane",
journal = "Romanian Reports in Physics",
title = "Radiocesium content in wild boar meat originating from Serbia",
volume = "74",
number = "710",
pages = "1-8",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2508"
}

Vićentijević, M., Pavlović, M., Vuković, D., Živanov, D., Ajtić, J.,& Mitrović, B.. (2022). Radiocesium content in wild boar meat originating from Serbia. in Romanian Reports in Physics
Editura Academiei Romane., 74(710), 1-8.
https://hdl.handle.net/21.15107/rcub_veterinar_2508

Vićentijević M, Pavlović M, Vuković D, Živanov D, Ajtić J, Mitrović B. Radiocesium content in wild boar meat originating from Serbia. in Romanian Reports in Physics. 2022;74(710):1-8.
https://hdl.handle.net/21.15107/rcub_veterinar_2508 .

Vićentijević, Mihajlo, Pavlović, Maja, Vuković, Dubravka, Živanov, Dragan, Ajtić, Jelena, Mitrović, Branislava, "Radiocesium content in wild boar meat originating from Serbia" in Romanian Reports in Physics, 74, no. 710 (2022):1-8,
https://hdl.handle.net/21.15107/rcub_veterinar_2508 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Mitrović, Branislava
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2530
AB  - Due to their therapeutic and pharmacologic properties, medicinal herbs have a long history of use around the world. The objective of this study is to determine the activity concentration of natural 40K, 226Ra, 232Th, and 238U) and artificial (137Cs) radionuclides in samples of herbal teas from Serbia. The samples of the following commercially available teas: dandelion leaf (Taraxaci folium), mulberry leaf (Mori nigrae folium), ground ivy (Glechoma hederacea), sweet wormwood (Artemisia annua), rose hip (Cynosbati fructus), wall germander (Teucrium chamaedrys), and thyme (Thymus vulgaris), were collected in Serbia in 2021. The radionuclides’ activity concentrations were determined using gamma spectrometry. The results show that among the natural radionuclides, 40K is dominant (320–1600 Bq/kg), while the activity concentration of 226Ra and 232Th ranges from below the minimum detectable activity (MDA) to 12 Bq/kg, and below the MDA to 13 Bq/kg, respectively. In all investigated samples, the 238U activity concentration is below the MDA. Cesium-137 is detected in five out of seven analysed samples (MDA–2.9 Bq/kg). The results indicate that 137Cs, released into the atmosphere after the Chernobyl accident in 1986, is still present in the environment of Serbia. Nevertheless, according to the Serbian legislation regulating the maximum permitted levels of radionuclides in foodstuffs, all of the investigated samples of herbal teas are safe for human consumption.
PB  - Niš : Sievert Association
C3  - RAP Conference PROCEEDINGS
T1  - Natural and artificial radionuclides in herbal teas from Serbia
VL  - 7
SP  - 4
EP  - 6
DO  - :10.37392/RAPPROC.2022.02
ER  - 

@conference{
author = "Ajtić, Jelena and Mitrović, Branislava",
year = "2022",
abstract = "Due to their therapeutic and pharmacologic properties, medicinal herbs have a long history of use around the world. The objective of this study is to determine the activity concentration of natural 40K, 226Ra, 232Th, and 238U) and artificial (137Cs) radionuclides in samples of herbal teas from Serbia. The samples of the following commercially available teas: dandelion leaf (Taraxaci folium), mulberry leaf (Mori nigrae folium), ground ivy (Glechoma hederacea), sweet wormwood (Artemisia annua), rose hip (Cynosbati fructus), wall germander (Teucrium chamaedrys), and thyme (Thymus vulgaris), were collected in Serbia in 2021. The radionuclides’ activity concentrations were determined using gamma spectrometry. The results show that among the natural radionuclides, 40K is dominant (320–1600 Bq/kg), while the activity concentration of 226Ra and 232Th ranges from below the minimum detectable activity (MDA) to 12 Bq/kg, and below the MDA to 13 Bq/kg, respectively. In all investigated samples, the 238U activity concentration is below the MDA. Cesium-137 is detected in five out of seven analysed samples (MDA–2.9 Bq/kg). The results indicate that 137Cs, released into the atmosphere after the Chernobyl accident in 1986, is still present in the environment of Serbia. Nevertheless, according to the Serbian legislation regulating the maximum permitted levels of radionuclides in foodstuffs, all of the investigated samples of herbal teas are safe for human consumption.",
publisher = "Niš : Sievert Association",
journal = "RAP Conference PROCEEDINGS",
title = "Natural and artificial radionuclides in herbal teas from Serbia",
volume = "7",
pages = "4-6",
doi = ":10.37392/RAPPROC.2022.02"
}

Ajtić, J.,& Mitrović, B.. (2022). Natural and artificial radionuclides in herbal teas from Serbia. in RAP Conference PROCEEDINGS
Niš : Sievert Association., 7, 4-6.
https://doi.org/:10.37392/RAPPROC.2022.02

Ajtić J, Mitrović B. Natural and artificial radionuclides in herbal teas from Serbia. in RAP Conference PROCEEDINGS. 2022;7:4-6.
doi::10.37392/RAPPROC.2022.02 .

Ajtić, Jelena, Mitrović, Branislava, "Natural and artificial radionuclides in herbal teas from Serbia" in RAP Conference PROCEEDINGS, 7 (2022):4-6,
https://doi.org/:10.37392/RAPPROC.2022.02 . .

TY  - JOUR
AU  - Hernández-Ceballos, M. A.
AU  - Brattich, Erika
AU  - Ajtić, Jelena
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2466
AB  - The long-term monitoring of the cosmogenic 7Be activity concentrations has been used to better understand the influence of large-scale atmospheric circulation dynamics in the troposphere. With an aim, this study analyzes weekly 7Be data from 15 sampling stations in Europe over 2005–2014. We first define peak (or extremely high) events in each station as those activity concentrations above the 90th percentile, and then investigate their temporal and spatial variability. These events are most frequent in the spring and summer seasons, with a notable latitudinal variability in their number. Next, we use back-trajectory cluster analysis to identify the main advection pathways associated with these high concentrations. To achieve this, persistent periods, i.e., sampling periods over which at least 60% of the calculated backward trajectories arriving at a given site correspond to the same airflow pattern, are taken as reference. This method reveals large differences in the association between the airflow patterns observed at different stations in connection with the 7Be peaks. A comparison between stations shows no clear spatial pattern, which suggests a further influence of mesoscale/local physical processes on the surface 7Be activity concentrations. Finally, the main airflow pattern at each sampling site and the associated 7Be peaks, are related to the main teleconnection patterns of large scale and regional climate variability in Europe: North Atlantic Oscillation, Arctic Oscillation, East Atlantic, East Atlantic/Western Russia, Scandinavian pattern and Western Mediterranean Oscillation. The results point out the connection between the negative phases of NAO and We-MO, and the positive phase of EA with the spatial and temporal variability and occurrence of the 7Be peak activity concentrations. These results show a latitudinal division between northern and southern sites, with similar influence of teleconnection patterns, while those located in the central part of Europe present larger variability in the impact of teleconnection patterns.
PB  - Elsevier
T2  - Chemosphere
T1  - Airflow and teleconnection patterns driving the spatial and temporal variability of high 7Be air concentrations in Europe
VL  - 303
SP  - 135194
DO  - 10.1016/j.chemosphere.2022.135194
ER  - 

@article{
author = "Hernández-Ceballos, M. A. and Brattich, Erika and Ajtić, Jelena",
year = "2022",
abstract = "The long-term monitoring of the cosmogenic 7Be activity concentrations has been used to better understand the influence of large-scale atmospheric circulation dynamics in the troposphere. With an aim, this study analyzes weekly 7Be data from 15 sampling stations in Europe over 2005–2014. We first define peak (or extremely high) events in each station as those activity concentrations above the 90th percentile, and then investigate their temporal and spatial variability. These events are most frequent in the spring and summer seasons, with a notable latitudinal variability in their number. Next, we use back-trajectory cluster analysis to identify the main advection pathways associated with these high concentrations. To achieve this, persistent periods, i.e., sampling periods over which at least 60% of the calculated backward trajectories arriving at a given site correspond to the same airflow pattern, are taken as reference. This method reveals large differences in the association between the airflow patterns observed at different stations in connection with the 7Be peaks. A comparison between stations shows no clear spatial pattern, which suggests a further influence of mesoscale/local physical processes on the surface 7Be activity concentrations. Finally, the main airflow pattern at each sampling site and the associated 7Be peaks, are related to the main teleconnection patterns of large scale and regional climate variability in Europe: North Atlantic Oscillation, Arctic Oscillation, East Atlantic, East Atlantic/Western Russia, Scandinavian pattern and Western Mediterranean Oscillation. The results point out the connection between the negative phases of NAO and We-MO, and the positive phase of EA with the spatial and temporal variability and occurrence of the 7Be peak activity concentrations. These results show a latitudinal division between northern and southern sites, with similar influence of teleconnection patterns, while those located in the central part of Europe present larger variability in the impact of teleconnection patterns.",
publisher = "Elsevier",
journal = "Chemosphere",
title = "Airflow and teleconnection patterns driving the spatial and temporal variability of high 7Be air concentrations in Europe",
volume = "303",
pages = "135194",
doi = "10.1016/j.chemosphere.2022.135194"
}

Hernández-Ceballos, M. A., Brattich, E.,& Ajtić, J.. (2022). Airflow and teleconnection patterns driving the spatial and temporal variability of high 7Be air concentrations in Europe. in Chemosphere
Elsevier., 303, 135194.
https://doi.org/10.1016/j.chemosphere.2022.135194

Hernández-Ceballos MA, Brattich E, Ajtić J. Airflow and teleconnection patterns driving the spatial and temporal variability of high 7Be air concentrations in Europe. in Chemosphere. 2022;303:135194.
doi:10.1016/j.chemosphere.2022.135194 .

Hernández-Ceballos, M. A., Brattich, Erika, Ajtić, Jelena, "Airflow and teleconnection patterns driving the spatial and temporal variability of high 7Be air concentrations in Europe" in Chemosphere, 303 (2022):135194,
https://doi.org/10.1016/j.chemosphere.2022.135194 . .

TY  - CONF
AU  - Stratimirović, Đorđe
AU  - Hernández-Ceballos, Miguel Ángel
AU  - Brattich, Erika
AU  - Sarvan, Darko
AU  - Ajtić, Jelena
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2477
AB  - The natural radionuclide beryllium-7 (Be-7) is produced in the upper levels of the atmosphere and is transported to the surface on carrier aerosols. Therefore, among other factors, the abundance of Be-7 in the surface air is governed by the rate of its production and large-scale air transport. The North Atlantic Oscillation (NAO) index, which quantifies the surface sea-level pressure difference between the Subtropical (Azores) High and Subpolar low, exerts large effects on precipitation and circulation patterns in Europe. With an aim to look closely into the interrelations between the Be-7 specific activity in the surface air, sunspot number (as a proxy for the production signal), and NAO index, this paper investigates their long-term time series over 28 years, between February 1987 and December 2014.
The Be-7 specific activity was recorded in Vienna (48.22 ºN; 16.35 ºE; 193 m a.s.l.), Austria, and stored in the Radioactivity Environmental Monitoring databank (REMdb) that is created and supported by the European Commission-Joint Research Centre in Ispra, Italy. The sunspot number (SN) data were downloaded from SILSO (Royal Observatory of Belgium, Brussels, Belgium), while the NAO records were retrieved from the Climate Prediction Centre of the National Oceanic and Atmospheric Administration, USA. Since the temporal resolution of the Be-7 measurements varied between six and eight days, they were first linearly interpolated into an array of weekly data, and then, the daily SN and NAO data were averaged into weekly records to match the Be-7 data. Next, Pearson’s correlation analysis and wavelet transform were used to analyse the time series.
The low Pearson’s correlation coefficients between the Be-7 specific activity in the surface air and SN (-0.15207) on one hand, and the NAO index and SN (0.13512) on the other hand, imply a lack of direct linear interrelations between these variables. The Pearson’s correlation coefficient between the Be-7 specific activity in the surface air and NAO index is even lower (-0.05904). However, the Be-7 specific activity wavelet spectrum shows a pronounced annual period, and looking further into the link between the Be-7 specific activity and NAO index at this characteristic periodicity, reveals a prominent pattern. Specifically, the wavelet coherence levels between these two parameters show variations that seem to be in agreement with the 11-year solar cycle: the coherence increases as the sunspot number transitions between its extremes, and it decreases around the maxima and minima in sunspot number. Further, phase difference shows that at the one-year periodicity, the Be-7 specific activity always lags behind the NAO index. The phase difference ranges between 2 and 6 months; it reaches the minimum around the solar activity extremes, and the maximum in-between.
These findings imply that, although weak, the signature of sunspot number can be seen in the wavelet coherence level between the Be-7 specific activity and NAO index.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Interrelation between the beryllium-7 specific activity in the surface air and North Atlantic Oscillation based on their wavelet coherence
SP  - 110
DO  - 10.21175/rad.sum.abstr.book.2022.27.2
ER  - 

@conference{
author = "Stratimirović, Đorđe and Hernández-Ceballos, Miguel Ángel and Brattich, Erika and Sarvan, Darko and Ajtić, Jelena",
year = "2022",
abstract = "The natural radionuclide beryllium-7 (Be-7) is produced in the upper levels of the atmosphere and is transported to the surface on carrier aerosols. Therefore, among other factors, the abundance of Be-7 in the surface air is governed by the rate of its production and large-scale air transport. The North Atlantic Oscillation (NAO) index, which quantifies the surface sea-level pressure difference between the Subtropical (Azores) High and Subpolar low, exerts large effects on precipitation and circulation patterns in Europe. With an aim to look closely into the interrelations between the Be-7 specific activity in the surface air, sunspot number (as a proxy for the production signal), and NAO index, this paper investigates their long-term time series over 28 years, between February 1987 and December 2014.
The Be-7 specific activity was recorded in Vienna (48.22 ºN; 16.35 ºE; 193 m a.s.l.), Austria, and stored in the Radioactivity Environmental Monitoring databank (REMdb) that is created and supported by the European Commission-Joint Research Centre in Ispra, Italy. The sunspot number (SN) data were downloaded from SILSO (Royal Observatory of Belgium, Brussels, Belgium), while the NAO records were retrieved from the Climate Prediction Centre of the National Oceanic and Atmospheric Administration, USA. Since the temporal resolution of the Be-7 measurements varied between six and eight days, they were first linearly interpolated into an array of weekly data, and then, the daily SN and NAO data were averaged into weekly records to match the Be-7 data. Next, Pearson’s correlation analysis and wavelet transform were used to analyse the time series.
The low Pearson’s correlation coefficients between the Be-7 specific activity in the surface air and SN (-0.15207) on one hand, and the NAO index and SN (0.13512) on the other hand, imply a lack of direct linear interrelations between these variables. The Pearson’s correlation coefficient between the Be-7 specific activity in the surface air and NAO index is even lower (-0.05904). However, the Be-7 specific activity wavelet spectrum shows a pronounced annual period, and looking further into the link between the Be-7 specific activity and NAO index at this characteristic periodicity, reveals a prominent pattern. Specifically, the wavelet coherence levels between these two parameters show variations that seem to be in agreement with the 11-year solar cycle: the coherence increases as the sunspot number transitions between its extremes, and it decreases around the maxima and minima in sunspot number. Further, phase difference shows that at the one-year periodicity, the Be-7 specific activity always lags behind the NAO index. The phase difference ranges between 2 and 6 months; it reaches the minimum around the solar activity extremes, and the maximum in-between.
These findings imply that, although weak, the signature of sunspot number can be seen in the wavelet coherence level between the Be-7 specific activity and NAO index.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Interrelation between the beryllium-7 specific activity in the surface air and North Atlantic Oscillation based on their wavelet coherence",
pages = "110",
doi = "10.21175/rad.sum.abstr.book.2022.27.2"
}

Stratimirović, Đ., Hernández-Ceballos, M. Á., Brattich, E., Sarvan, D.,& Ajtić, J.. (2022). Interrelation between the beryllium-7 specific activity in the surface air and North Atlantic Oscillation based on their wavelet coherence. in RAD Conference Proceedings
RAD Association., 110.
https://doi.org/10.21175/rad.sum.abstr.book.2022.27.2

Stratimirović Đ, Hernández-Ceballos MÁ, Brattich E, Sarvan D, Ajtić J. Interrelation between the beryllium-7 specific activity in the surface air and North Atlantic Oscillation based on their wavelet coherence. in RAD Conference Proceedings. 2022;:110.
doi:10.21175/rad.sum.abstr.book.2022.27.2 .

Stratimirović, Đorđe, Hernández-Ceballos, Miguel Ángel, Brattich, Erika, Sarvan, Darko, Ajtić, Jelena, "Interrelation between the beryllium-7 specific activity in the surface air and North Atlantic Oscillation based on their wavelet coherence" in RAD Conference Proceedings (2022):110,
https://doi.org/10.21175/rad.sum.abstr.book.2022.27.2 . .

TY  - CONF
AU  - Bianchi, Stefano
AU  - Plastino, Wolfango
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Todorović, Dragana
AU  - Zorko, Benjamin
AU  - Nečemer, Marijan
AU  - Vodenik, Branko
AU  - Glavič Cindro, Denis
AU  - Kožar Logar, Jasmina
AU  - Sarvan, Darko
AU  - Đurđević, Vladimir
AU  - Ajtić, Jelena
PY  - 2022
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2479
AB  - Beryllium-7 is a natural radionuclide used as a tracer of the stratospheric-tropospheric exchange. Its abundance in the surface air is expected to change as the temperatures in the atmosphere increase.
To investigate the temporal trends of the beryllium-7 activity concentrations and temperature, we apply spectral analysis to time series from three sampling sites: Belgrade in Serbia, and Ljubljana and Krško in Slovenia. The sites lie close to the 45 ºN parallel, with Krško approximately 400 km and Ljubljana around 500 km west of Belgrade. Between January 1991 and December 2019, the air filter samples were collected using air samplers; a monthly composite sample was formed and analysed by gamma spectrometry. We use monthly mean temperature records from the European Climate Assessment & Dataset, the Republic Hydrometeorological Service of Serbia for Belgrade, and the Slovenian Environment Agency for the sites in Slovenia.
In the spectral analysis decomposition, we look into a term called trend that represents the overall growth (increase or decrease) in the data records. The trend is calculated using a linear fit. All three sites show 1) positive temperature trends, however statistically insignificant (at the 95 % confidence level), and 2) statistically significant beryllium-7 activity concentration trends of 2.26 %/year, 1.13 %/year, and 0.50 %/year in Belgrade, Ljubljana, and Krško, respectively.
The results confirm our initial hypothesis–over the 28 investigated years, the beryllium-7 activity concentrations increase in the surface air. On the other hand, the non-significant temperature rise in our records suggests that within our method, the temporal resolution of one month is insufficient for obtaining a statistically significant temperature trend.
PB  - Niš : Sievert Association
C3  - International conference on radiation applications (RAP 2022)
T1  - Beryllium-7 activity concentration trends in Serbia and Slovenia
SP  - 45
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2479
ER  - 

@conference{
author = "Bianchi, Stefano and Plastino, Wolfango and Rajačić, Milica and Krneta Nikolić, Jelena and Todorović, Dragana and Zorko, Benjamin and Nečemer, Marijan and Vodenik, Branko and Glavič Cindro, Denis and Kožar Logar, Jasmina and Sarvan, Darko and Đurđević, Vladimir and Ajtić, Jelena",
year = "2022",
abstract = "Beryllium-7 is a natural radionuclide used as a tracer of the stratospheric-tropospheric exchange. Its abundance in the surface air is expected to change as the temperatures in the atmosphere increase.
To investigate the temporal trends of the beryllium-7 activity concentrations and temperature, we apply spectral analysis to time series from three sampling sites: Belgrade in Serbia, and Ljubljana and Krško in Slovenia. The sites lie close to the 45 ºN parallel, with Krško approximately 400 km and Ljubljana around 500 km west of Belgrade. Between January 1991 and December 2019, the air filter samples were collected using air samplers; a monthly composite sample was formed and analysed by gamma spectrometry. We use monthly mean temperature records from the European Climate Assessment & Dataset, the Republic Hydrometeorological Service of Serbia for Belgrade, and the Slovenian Environment Agency for the sites in Slovenia.
In the spectral analysis decomposition, we look into a term called trend that represents the overall growth (increase or decrease) in the data records. The trend is calculated using a linear fit. All three sites show 1) positive temperature trends, however statistically insignificant (at the 95 % confidence level), and 2) statistically significant beryllium-7 activity concentration trends of 2.26 %/year, 1.13 %/year, and 0.50 %/year in Belgrade, Ljubljana, and Krško, respectively.
The results confirm our initial hypothesis–over the 28 investigated years, the beryllium-7 activity concentrations increase in the surface air. On the other hand, the non-significant temperature rise in our records suggests that within our method, the temporal resolution of one month is insufficient for obtaining a statistically significant temperature trend.",
publisher = "Niš : Sievert Association",
journal = "International conference on radiation applications (RAP 2022)",
title = "Beryllium-7 activity concentration trends in Serbia and Slovenia",
pages = "45",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2479"
}

Bianchi, S., Plastino, W., Rajačić, M., Krneta Nikolić, J., Todorović, D., Zorko, B., Nečemer, M., Vodenik, B., Glavič Cindro, D., Kožar Logar, J., Sarvan, D., Đurđević, V.,& Ajtić, J.. (2022). Beryllium-7 activity concentration trends in Serbia and Slovenia. in International conference on radiation applications (RAP 2022)
Niš : Sievert Association., 45.
https://hdl.handle.net/21.15107/rcub_veterinar_2479

Bianchi S, Plastino W, Rajačić M, Krneta Nikolić J, Todorović D, Zorko B, Nečemer M, Vodenik B, Glavič Cindro D, Kožar Logar J, Sarvan D, Đurđević V, Ajtić J. Beryllium-7 activity concentration trends in Serbia and Slovenia. in International conference on radiation applications (RAP 2022). 2022;:45.
https://hdl.handle.net/21.15107/rcub_veterinar_2479 .

Bianchi, Stefano, Plastino, Wolfango, Rajačić, Milica, Krneta Nikolić, Jelena, Todorović, Dragana, Zorko, Benjamin, Nečemer, Marijan, Vodenik, Branko, Glavič Cindro, Denis, Kožar Logar, Jasmina, Sarvan, Darko, Đurđević, Vladimir, Ajtić, Jelena, "Beryllium-7 activity concentration trends in Serbia and Slovenia" in International conference on radiation applications (RAP 2022) (2022):45,
https://hdl.handle.net/21.15107/rcub_veterinar_2479 .

TY  - JOUR
AU  - Beletić, Anđelo
AU  - Janjić, Filip
AU  - Radaković, Milena
AU  - Spariosu, Kristina
AU  - Francuski Andrić, Jelena
AU  - Chandrashekar, Ramaswamy
AU  - Tyrrell, Phyllis
AU  - Radonjić, Vladimir
AU  - Balint, Bela
AU  - Ajtić, Jelena
AU  - Kovačević-Filipović, Milica
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2015
AB  - The common signs of canine babesiosis caused by an infection with Babesia canis are fever, anorexia, lethargy, pulse alterations, anemia, and occasionally mild icterus. Dogs with these clinical signs can be divided into two groups: those with acute-phase reaction and those with systemic inflammatory response syndrome (SIRS). Factors associated with the occurrence of SIRS in canine babesiosis have not been thoroughly researched. This article outlines a cross-sectional study of 54 client-owned dogs with an acute B. canis infection, and evaluates the differences in age, gender, laboratory findings, parasite load, and seroreactivity against B. canis between the SIRS and the SIRS-free dogs. We have analyzed a complete blood count, serum biochemistry, serum amyloid A, ceruloplasmin, paraoxonase-1, serology, and PCR testing using standard methodologies. The frequency of SIRS among the investigated dogs reached 0.59. Male dogs and those seronegative against B. canis, were more frequent in the SIRS group, whilst age and parasite load could not be associated with the presence of SIRS. Dogs with SIRS had a lower count of total leukocytes, neutrophils, lymphocytes, and monocytes, and a lower concentration of iron and bilirubin compared with SIRS-free dogs. No significant differences in the concentration of acute-phase proteins have been noticed to exist between the groups of dogs. Further, the seronegative dogs had a lower count of lymphocytes and monocytes and a higher parasite load than the seroreactive dogs. Multivariate logistic regression analysis has identified leukopenia (<6 × 109/L) and monocytopenia (<0.2 × 109/L) as independent associates of SIRS in the investigated dogs, thus implying that these routine tests could be used as reliable markers for SIRS.
PB  - Elsevier
T2  - Veterinary Parasitology
T1  - Systemic inflammatory response syndrome in dogs naturally infected with Babesia canis: Association with the parasite load and host factors
VL  - 291
DO  - 10.1016/j.vetpar.2021.109366
ER  - 

@article{
author = "Beletić, Anđelo and Janjić, Filip and Radaković, Milena and Spariosu, Kristina and Francuski Andrić, Jelena and Chandrashekar, Ramaswamy and Tyrrell, Phyllis and Radonjić, Vladimir and Balint, Bela and Ajtić, Jelena and Kovačević-Filipović, Milica",
year = "2021",
abstract = "The common signs of canine babesiosis caused by an infection with Babesia canis are fever, anorexia, lethargy, pulse alterations, anemia, and occasionally mild icterus. Dogs with these clinical signs can be divided into two groups: those with acute-phase reaction and those with systemic inflammatory response syndrome (SIRS). Factors associated with the occurrence of SIRS in canine babesiosis have not been thoroughly researched. This article outlines a cross-sectional study of 54 client-owned dogs with an acute B. canis infection, and evaluates the differences in age, gender, laboratory findings, parasite load, and seroreactivity against B. canis between the SIRS and the SIRS-free dogs. We have analyzed a complete blood count, serum biochemistry, serum amyloid A, ceruloplasmin, paraoxonase-1, serology, and PCR testing using standard methodologies. The frequency of SIRS among the investigated dogs reached 0.59. Male dogs and those seronegative against B. canis, were more frequent in the SIRS group, whilst age and parasite load could not be associated with the presence of SIRS. Dogs with SIRS had a lower count of total leukocytes, neutrophils, lymphocytes, and monocytes, and a lower concentration of iron and bilirubin compared with SIRS-free dogs. No significant differences in the concentration of acute-phase proteins have been noticed to exist between the groups of dogs. Further, the seronegative dogs had a lower count of lymphocytes and monocytes and a higher parasite load than the seroreactive dogs. Multivariate logistic regression analysis has identified leukopenia (<6 × 109/L) and monocytopenia (<0.2 × 109/L) as independent associates of SIRS in the investigated dogs, thus implying that these routine tests could be used as reliable markers for SIRS.",
publisher = "Elsevier",
journal = "Veterinary Parasitology",
title = "Systemic inflammatory response syndrome in dogs naturally infected with Babesia canis: Association with the parasite load and host factors",
volume = "291",
doi = "10.1016/j.vetpar.2021.109366"
}

Beletić, A., Janjić, F., Radaković, M., Spariosu, K., Francuski Andrić, J., Chandrashekar, R., Tyrrell, P., Radonjić, V., Balint, B., Ajtić, J.,& Kovačević-Filipović, M.. (2021). Systemic inflammatory response syndrome in dogs naturally infected with Babesia canis: Association with the parasite load and host factors. in Veterinary Parasitology
Elsevier., 291.
https://doi.org/10.1016/j.vetpar.2021.109366

Beletić A, Janjić F, Radaković M, Spariosu K, Francuski Andrić J, Chandrashekar R, Tyrrell P, Radonjić V, Balint B, Ajtić J, Kovačević-Filipović M. Systemic inflammatory response syndrome in dogs naturally infected with Babesia canis: Association with the parasite load and host factors. in Veterinary Parasitology. 2021;291.
doi:10.1016/j.vetpar.2021.109366 .

Beletić, Anđelo, Janjić, Filip, Radaković, Milena, Spariosu, Kristina, Francuski Andrić, Jelena, Chandrashekar, Ramaswamy, Tyrrell, Phyllis, Radonjić, Vladimir, Balint, Bela, Ajtić, Jelena, Kovačević-Filipović, Milica, "Systemic inflammatory response syndrome in dogs naturally infected with Babesia canis: Association with the parasite load and host factors" in Veterinary Parasitology, 291 (2021),
https://doi.org/10.1016/j.vetpar.2021.109366 . .

TY  - JOUR
AU  - Brattich, Erika
AU  - Liu, Hongyu
AU  - Zhang, Bo
AU  - Hernández-Ceballos, Miguel Ángel
AU  - Paatero, Jussi
AU  - Sarvan, Darko
AU  - Djurdjević, Vladimir
AU  - Tositti, Laura
AU  - Ajtić, Jelena
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2336
AB  - Abstract. Events of very high concentrations of 7Be cosmogenic radionuclide have been recorded at low-elevation surface stations in the subpolar regions of Europe during the cold season. With an aim to investigate the mechanisms responsible for those peak 7Be events, and in particular to verify if they are associated with the fast descent of stratospheric air masses occurring during sudden stratospheric warming (SSW) events, we analyze 7Be observations at six sampling sites in Fennoscandia during January–March 2003 when very high 7Be concentrations were observed and the Arctic vortex was relatively unstable as a consequence of several SSW events. We use the GEOS-Chem chemistry and transport model driven by the MERRA-2 meteorological reanalysis to simulate tropospheric 7Be over northern Europe. We show that the model reasonably reproduces the temporal evolution of surface 7Be concentrations observed at the six sampling sites. Our analysis of model simulations, surface 7Be observations, atmospheric soundings of ozone and temperature and surface ozone measurements indicates that the 7Be peak observed in late February 2003 (between 20 and 28 February 2003) at the six sampling sites in Fennoscandia was associated with downward transport of stratospheric vortex air that originated during an SSW that occurred a few days earlier (between 18 and 21 February 2003).
T2  - Atmospheric Chemistry and Physics
T1  - Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003
VL  - 21
IS  - 23
SP  - 17927
EP  - 17951
DO  - 10.5194/acp-21-17927-2021
ER  - 

@article{
author = "Brattich, Erika and Liu, Hongyu and Zhang, Bo and Hernández-Ceballos, Miguel Ángel and Paatero, Jussi and Sarvan, Darko and Djurdjević, Vladimir and Tositti, Laura and Ajtić, Jelena",
year = "2021",
abstract = "Abstract. Events of very high concentrations of 7Be cosmogenic radionuclide have been recorded at low-elevation surface stations in the subpolar regions of Europe during the cold season. With an aim to investigate the mechanisms responsible for those peak 7Be events, and in particular to verify if they are associated with the fast descent of stratospheric air masses occurring during sudden stratospheric warming (SSW) events, we analyze 7Be observations at six sampling sites in Fennoscandia during January–March 2003 when very high 7Be concentrations were observed and the Arctic vortex was relatively unstable as a consequence of several SSW events. We use the GEOS-Chem chemistry and transport model driven by the MERRA-2 meteorological reanalysis to simulate tropospheric 7Be over northern Europe. We show that the model reasonably reproduces the temporal evolution of surface 7Be concentrations observed at the six sampling sites. Our analysis of model simulations, surface 7Be observations, atmospheric soundings of ozone and temperature and surface ozone measurements indicates that the 7Be peak observed in late February 2003 (between 20 and 28 February 2003) at the six sampling sites in Fennoscandia was associated with downward transport of stratospheric vortex air that originated during an SSW that occurred a few days earlier (between 18 and 21 February 2003).",
journal = "Atmospheric Chemistry and Physics",
title = "Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003",
volume = "21",
number = "23",
pages = "17927-17951",
doi = "10.5194/acp-21-17927-2021"
}

Brattich, E., Liu, H., Zhang, B., Hernández-Ceballos, M. Á., Paatero, J., Sarvan, D., Djurdjević, V., Tositti, L.,& Ajtić, J.. (2021). Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003. in Atmospheric Chemistry and Physics, 21(23), 17927-17951.
https://doi.org/10.5194/acp-21-17927-2021

Brattich E, Liu H, Zhang B, Hernández-Ceballos MÁ, Paatero J, Sarvan D, Djurdjević V, Tositti L, Ajtić J. Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003. in Atmospheric Chemistry and Physics. 2021;21(23):17927-17951.
doi:10.5194/acp-21-17927-2021 .

Brattich, Erika, Liu, Hongyu, Zhang, Bo, Hernández-Ceballos, Miguel Ángel, Paatero, Jussi, Sarvan, Darko, Djurdjević, Vladimir, Tositti, Laura, Ajtić, Jelena, "Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003" in Atmospheric Chemistry and Physics, 21, no. 23 (2021):17927-17951,
https://doi.org/10.5194/acp-21-17927-2021 . .

TY  - DATA
AU  - Brattich, Erika
AU  - Liu, Hongyu
AU  - Zhang, Bo
AU  - Hernández-Ceballos, Miguel Ángel
AU  - Paatero, Jussi
AU  - Sarvan, Darko
AU  - Djurdjević, Vladimir
AU  - Tositti, Laura
AU  - Ajtić, Jelena
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2337
T2  - Atmospheric Chemistry and Physics
T1  - Supplementary data for article:  Brattich, E.; Liu, H.; Zhang, B.; Hernández-Ceballos, M. Á.; Paatero, J.; Sarvan, D.; Djurdjevic, V.; Tositti, L.; Ajtić, J. Observation and Modeling of High-7Be Concentration Events at the Surface in Northern Europe Associated with the Instability of the Arctic Polar Vortex in Early 2003. Atmospheric Chemistry and Physics 2021, 21 (23), 17927–17951. https://doi.org/10.5194/acp-21-17927-2021
VL  - 21
IS  - 23
SP  - 17927
EP  - 17951
DO  - 10.5194/acp-21-17927-2021-supplement
ER  - 

@misc{
author = "Brattich, Erika and Liu, Hongyu and Zhang, Bo and Hernández-Ceballos, Miguel Ángel and Paatero, Jussi and Sarvan, Darko and Djurdjević, Vladimir and Tositti, Laura and Ajtić, Jelena",
year = "2021",
journal = "Atmospheric Chemistry and Physics",
title = "Supplementary data for article:  Brattich, E.; Liu, H.; Zhang, B.; Hernández-Ceballos, M. Á.; Paatero, J.; Sarvan, D.; Djurdjevic, V.; Tositti, L.; Ajtić, J. Observation and Modeling of High-7Be Concentration Events at the Surface in Northern Europe Associated with the Instability of the Arctic Polar Vortex in Early 2003. Atmospheric Chemistry and Physics 2021, 21 (23), 17927–17951. https://doi.org/10.5194/acp-21-17927-2021",
volume = "21",
number = "23",
pages = "17927-17951",
doi = "10.5194/acp-21-17927-2021-supplement"
}

Brattich, E., Liu, H., Zhang, B., Hernández-Ceballos, M. Á., Paatero, J., Sarvan, D., Djurdjević, V., Tositti, L.,& Ajtić, J.. (2021). Supplementary data for article:  Brattich, E.; Liu, H.; Zhang, B.; Hernández-Ceballos, M. Á.; Paatero, J.; Sarvan, D.; Djurdjevic, V.; Tositti, L.; Ajtić, J. Observation and Modeling of High-7Be Concentration Events at the Surface in Northern Europe Associated with the Instability of the Arctic Polar Vortex in Early 2003. Atmospheric Chemistry and Physics 2021, 21 (23), 17927–17951. https://doi.org/10.5194/acp-21-17927-2021. in Atmospheric Chemistry and Physics, 21(23), 17927-17951.
https://doi.org/10.5194/acp-21-17927-2021-supplement

Brattich E, Liu H, Zhang B, Hernández-Ceballos MÁ, Paatero J, Sarvan D, Djurdjević V, Tositti L, Ajtić J. Supplementary data for article:  Brattich, E.; Liu, H.; Zhang, B.; Hernández-Ceballos, M. Á.; Paatero, J.; Sarvan, D.; Djurdjevic, V.; Tositti, L.; Ajtić, J. Observation and Modeling of High-7Be Concentration Events at the Surface in Northern Europe Associated with the Instability of the Arctic Polar Vortex in Early 2003. Atmospheric Chemistry and Physics 2021, 21 (23), 17927–17951. https://doi.org/10.5194/acp-21-17927-2021. in Atmospheric Chemistry and Physics. 2021;21(23):17927-17951.
doi:10.5194/acp-21-17927-2021-supplement .

Brattich, Erika, Liu, Hongyu, Zhang, Bo, Hernández-Ceballos, Miguel Ángel, Paatero, Jussi, Sarvan, Darko, Djurdjević, Vladimir, Tositti, Laura, Ajtić, Jelena, "Supplementary data for article:  Brattich, E.; Liu, H.; Zhang, B.; Hernández-Ceballos, M. Á.; Paatero, J.; Sarvan, D.; Djurdjevic, V.; Tositti, L.; Ajtić, J. Observation and Modeling of High-7Be Concentration Events at the Surface in Northern Europe Associated with the Instability of the Arctic Polar Vortex in Early 2003. Atmospheric Chemistry and Physics 2021, 21 (23), 17927–17951. https://doi.org/10.5194/acp-21-17927-2021" in Atmospheric Chemistry and Physics, 21, no. 23 (2021):17927-17951,
https://doi.org/10.5194/acp-21-17927-2021-supplement . .

TY  - JOUR
AU  - Ajtić, Jelena
AU  - Zorko, B.
AU  - Nečemer, M.
AU  - Sarvan, Darko
AU  - Rajačić, M.
AU  - Krneta Nikolić, J.
AU  - Todorović, D.
AU  - Djurdjevic, V.
AU  - Vodenik, B.
AU  - Glavič Cindro, D.
AU  - Kožar Logar, J.
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2364
AB  - This study investigates the beryllium-7, lead-210 and caesium-137 activity concentrations in aerosol filter samples collected monthly along the 45°N zonal belt over 1991–2019. Sampling was performed in three locations, one in Serbia and two in Slovenia, and the Slovenian data records are published here for the first time. The activity concentrations were determined by standard gamma spectrometry. The obtained results are in general agreement with the literature data for Europe. The data sets at different sites display similarities in measurement ranges, overall means and seasonal cycles. Still, statistical tests show significant differences among the radionuclides’ concentrations across the locations. To investigate underlying processes that affect radioactivity in the surface air in this region, multivariate statistical concepts are applied to the radionuclides’ concentrations and local meteorological parameters. Discriminant analysis shows that all three sites are well separated from each other. Principal component analysis gives common pattern of interconnection between the observables: temperature has a stronger influence on the behaviour of beryllium-7 and lead-210 than that of caesium-137, but a negative correlation of the radionuclides’ concentrations with precipitation seems the strongest for caesium-137. Principal component analysis also shows local differences in the degree of relationship between the meteorological parameters and activity concentrations of the investigated radionuclides. This is an important finding for future atmospheric transport studies.
PB  - Springer
T2  - International Journal of Environmental Science and Technology
T1  - Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe
DO  - 10.1007/s13762-021-03814-0
ER  - 

@article{
author = "Ajtić, Jelena and Zorko, B. and Nečemer, M. and Sarvan, Darko and Rajačić, M. and Krneta Nikolić, J. and Todorović, D. and Djurdjevic, V. and Vodenik, B. and Glavič Cindro, D. and Kožar Logar, J.",
year = "2021",
abstract = "This study investigates the beryllium-7, lead-210 and caesium-137 activity concentrations in aerosol filter samples collected monthly along the 45°N zonal belt over 1991–2019. Sampling was performed in three locations, one in Serbia and two in Slovenia, and the Slovenian data records are published here for the first time. The activity concentrations were determined by standard gamma spectrometry. The obtained results are in general agreement with the literature data for Europe. The data sets at different sites display similarities in measurement ranges, overall means and seasonal cycles. Still, statistical tests show significant differences among the radionuclides’ concentrations across the locations. To investigate underlying processes that affect radioactivity in the surface air in this region, multivariate statistical concepts are applied to the radionuclides’ concentrations and local meteorological parameters. Discriminant analysis shows that all three sites are well separated from each other. Principal component analysis gives common pattern of interconnection between the observables: temperature has a stronger influence on the behaviour of beryllium-7 and lead-210 than that of caesium-137, but a negative correlation of the radionuclides’ concentrations with precipitation seems the strongest for caesium-137. Principal component analysis also shows local differences in the degree of relationship between the meteorological parameters and activity concentrations of the investigated radionuclides. This is an important finding for future atmospheric transport studies.",
publisher = "Springer",
journal = "International Journal of Environmental Science and Technology",
title = "Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe",
doi = "10.1007/s13762-021-03814-0"
}

Ajtić, J., Zorko, B., Nečemer, M., Sarvan, D., Rajačić, M., Krneta Nikolić, J., Todorović, D., Djurdjevic, V., Vodenik, B., Glavič Cindro, D.,& Kožar Logar, J.. (2021). Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe. in International Journal of Environmental Science and Technology
Springer..
https://doi.org/10.1007/s13762-021-03814-0

Ajtić J, Zorko B, Nečemer M, Sarvan D, Rajačić M, Krneta Nikolić J, Todorović D, Djurdjevic V, Vodenik B, Glavič Cindro D, Kožar Logar J. Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe. in International Journal of Environmental Science and Technology. 2021;.
doi:10.1007/s13762-021-03814-0 .

Ajtić, Jelena, Zorko, B., Nečemer, M., Sarvan, Darko, Rajačić, M., Krneta Nikolić, J., Todorović, D., Djurdjevic, V., Vodenik, B., Glavič Cindro, D., Kožar Logar, J., "Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe" in International Journal of Environmental Science and Technology (2021),
https://doi.org/10.1007/s13762-021-03814-0 . .

TY  - CONF
AU  - Stratimirović, Djordje
AU  - Sarvan, Darko
AU  - Brattich, Erika
AU  - Hernández-Ceballos, Miguel Angel
AU  - Djurdjević, Vladimir
AU  - Ajtić, Jelena
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2371
AB  - U ovom radu razmatramo vremenske serije srednjih nedeljnih specifičnih aktivnosti
berilijuma-7 u vazduhu i temperature na lokaciji Beč (48,22 ºN; 16,35 ºE; 193 m n.v.) u
Austriji, koje su zabeležene od februara 1987. do decembra 2014. godine. Merenja
specifične aktivnosti berilijuma-7 u prizmenom sloju vazduha preuzeta su iz
Radioactivity Environmental Monitoring databank (REMdb) koju održava Objedinjeni
istraživački centar u Ispri, Italija, a podaci za lokalnu temperaturu iz E-OBS gridovane
klimatologije (verzija 15) koji su potom bilinearnom interpolacijom ekstrahovani na
lokaciju uzorkovanja berilijuma-7. Za analizu serija koristili smo korelacionu analizu i
vejvlet transformacije. Vrednost Pirsonovog koeficijenta korelacije od 0,68 ukazuje na
jaku vezu između nedeljnih specifičnih aktivnosti berilijuma-7 i temperature, dok vejvlet
spektri snage pokazuju izraziti godišnji period za obe varijable tokom ispitivanog
vremenskog intervala. Godišnji period dominantno je vidljiv i na kros-korelacionom
spektru. Takođe je uočen blagi fazni pomeraj koji ukazuje da promena specifične
aktivnosti berilijuma-7 merene u prizemnom sloju vazduha prethodi promeni
temperature
PB  - Institut za nuklearne nauke „Vinča“
C3  - Zbornik radova sa XXXI Simpozijuma Društva za zaštitu od zračenja Srbije i Crne Gore, 6–8. oktobar, 2021, Beograd, Srbija
T1  - Korelacione karakteristike specifične aktivnosti berilijuma-7 i temperature na dugogodišnjim nizovima nedeljnih vrednosti
SP  - 27
EP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2371
ER  - 

@conference{
author = "Stratimirović, Djordje and Sarvan, Darko and Brattich, Erika and Hernández-Ceballos, Miguel Angel and Djurdjević, Vladimir and Ajtić, Jelena",
year = "2021",
abstract = "U ovom radu razmatramo vremenske serije srednjih nedeljnih specifičnih aktivnosti
berilijuma-7 u vazduhu i temperature na lokaciji Beč (48,22 ºN; 16,35 ºE; 193 m n.v.) u
Austriji, koje su zabeležene od februara 1987. do decembra 2014. godine. Merenja
specifične aktivnosti berilijuma-7 u prizmenom sloju vazduha preuzeta su iz
Radioactivity Environmental Monitoring databank (REMdb) koju održava Objedinjeni
istraživački centar u Ispri, Italija, a podaci za lokalnu temperaturu iz E-OBS gridovane
klimatologije (verzija 15) koji su potom bilinearnom interpolacijom ekstrahovani na
lokaciju uzorkovanja berilijuma-7. Za analizu serija koristili smo korelacionu analizu i
vejvlet transformacije. Vrednost Pirsonovog koeficijenta korelacije od 0,68 ukazuje na
jaku vezu između nedeljnih specifičnih aktivnosti berilijuma-7 i temperature, dok vejvlet
spektri snage pokazuju izraziti godišnji period za obe varijable tokom ispitivanog
vremenskog intervala. Godišnji period dominantno je vidljiv i na kros-korelacionom
spektru. Takođe je uočen blagi fazni pomeraj koji ukazuje da promena specifične
aktivnosti berilijuma-7 merene u prizemnom sloju vazduha prethodi promeni
temperature",
publisher = "Institut za nuklearne nauke „Vinča“",
journal = "Zbornik radova sa XXXI Simpozijuma Društva za zaštitu od zračenja Srbije i Crne Gore, 6–8. oktobar, 2021, Beograd, Srbija",
title = "Korelacione karakteristike specifične aktivnosti berilijuma-7 i temperature na dugogodišnjim nizovima nedeljnih vrednosti",
pages = "27-31",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2371"
}

Stratimirović, D., Sarvan, D., Brattich, E., Hernández-Ceballos, M. A., Djurdjević, V.,& Ajtić, J.. (2021). Korelacione karakteristike specifične aktivnosti berilijuma-7 i temperature na dugogodišnjim nizovima nedeljnih vrednosti. in Zbornik radova sa XXXI Simpozijuma Društva za zaštitu od zračenja Srbije i Crne Gore, 6–8. oktobar, 2021, Beograd, Srbija
Institut za nuklearne nauke „Vinča“., 27-31.
https://hdl.handle.net/21.15107/rcub_veterinar_2371

Stratimirović D, Sarvan D, Brattich E, Hernández-Ceballos MA, Djurdjević V, Ajtić J. Korelacione karakteristike specifične aktivnosti berilijuma-7 i temperature na dugogodišnjim nizovima nedeljnih vrednosti. in Zbornik radova sa XXXI Simpozijuma Društva za zaštitu od zračenja Srbije i Crne Gore, 6–8. oktobar, 2021, Beograd, Srbija. 2021;:27-31.
https://hdl.handle.net/21.15107/rcub_veterinar_2371 .

Stratimirović, Djordje, Sarvan, Darko, Brattich, Erika, Hernández-Ceballos, Miguel Angel, Djurdjević, Vladimir, Ajtić, Jelena, "Korelacione karakteristike specifične aktivnosti berilijuma-7 i temperature na dugogodišnjim nizovima nedeljnih vrednosti" in Zbornik radova sa XXXI Simpozijuma Društva za zaštitu od zračenja Srbije i Crne Gore, 6–8. oktobar, 2021, Beograd, Srbija (2021):27-31,
https://hdl.handle.net/21.15107/rcub_veterinar_2371 .

TY  - JOUR
AU  - Milanović, Zorana
AU  - Beletić, Anđelo
AU  - Vekić, Jelena
AU  - Zeljković, Aleksandra
AU  - Andrić, Nenad
AU  - Božović, Anja Ilić
AU  - Spariosu, Kristina
AU  - Radaković, Milena
AU  - Ajtić, Jelena
AU  - Kovačević-Filipović, Milica
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1875
AB  - Asymptomatic outdoor dogs can be carriers of Babesia canis, but data describing the development of an acute phase response (APR) are not available. We hypothesised that these dogs have a moderate APR that could be detected by hematological and biochemical changes. Two groups of Babesia-exposed dogs were represented by nine B. canis PCR-positive and twenty B. canis PCR-negative, seroreactive dogs. The control group consisted of ten Babesia-naïve dogs. Serum amyloid A (SAA), paraoxonase-1 (PON-1), complete blood count, and biochemistry parameters were analysed by standard methodologies. Protein and lipoprotein fractions were separated using agarose gel electrophoresis (GE), and the dominant diameters of lipoproteins were assessed on gradient GE. Results were evaluated using non-parametric tests and the Receiver Operating Characteristic curve. SAA (median 39.0 μg/mL, range 2.2–48.8 μg/mL), total protein (median 74.7 g/L, range 57.1–98.3 g/L) and the dominant diameter of α-lipoproteins (median 13.31 nm, range 12.09–14.17 nm) in B. canis PCR-positive dogs were higher relative to dogs in the control group or dogs that were PCR-negative but seroreactive (p < 0.001 for both groups). Mild to moderate anemia (4/29), thrombocytopenia (7/29), and leukocyte counts that were close to the upper limit of the reference range were encountered in both Babesia-exposed groups. When compared to controls, Babesia-exposed dogs displayed decreased a PON-1 activity and protein GE pattern consistent with low-grade chronic inflammation (p < 0.001 for both groups). Dogs with detectable amounts of B. canis DNA in blood contain increased levels of SAA and total protein along with α-lipoproteins that display an increased diameter relative to those dogs with positive Babesia serology but undetectable levels of B. canis DNA in blood.
PB  - Elsevier Science Bv, Amsterdam
T2  - Veterinary Parasitology
T1  - Evidence of acute phase reaction in asymptomatic dogs naturally infected with Babesia canis
VL  - 282
SP  - 109140
DO  - 10.1016/j.vetpar.2020.109140
ER  - 

@article{
author = "Milanović, Zorana and Beletić, Anđelo and Vekić, Jelena and Zeljković, Aleksandra and Andrić, Nenad and Božović, Anja Ilić and Spariosu, Kristina and Radaković, Milena and Ajtić, Jelena and Kovačević-Filipović, Milica",
year = "2020",
abstract = "Asymptomatic outdoor dogs can be carriers of Babesia canis, but data describing the development of an acute phase response (APR) are not available. We hypothesised that these dogs have a moderate APR that could be detected by hematological and biochemical changes. Two groups of Babesia-exposed dogs were represented by nine B. canis PCR-positive and twenty B. canis PCR-negative, seroreactive dogs. The control group consisted of ten Babesia-naïve dogs. Serum amyloid A (SAA), paraoxonase-1 (PON-1), complete blood count, and biochemistry parameters were analysed by standard methodologies. Protein and lipoprotein fractions were separated using agarose gel electrophoresis (GE), and the dominant diameters of lipoproteins were assessed on gradient GE. Results were evaluated using non-parametric tests and the Receiver Operating Characteristic curve. SAA (median 39.0 μg/mL, range 2.2–48.8 μg/mL), total protein (median 74.7 g/L, range 57.1–98.3 g/L) and the dominant diameter of α-lipoproteins (median 13.31 nm, range 12.09–14.17 nm) in B. canis PCR-positive dogs were higher relative to dogs in the control group or dogs that were PCR-negative but seroreactive (p < 0.001 for both groups). Mild to moderate anemia (4/29), thrombocytopenia (7/29), and leukocyte counts that were close to the upper limit of the reference range were encountered in both Babesia-exposed groups. When compared to controls, Babesia-exposed dogs displayed decreased a PON-1 activity and protein GE pattern consistent with low-grade chronic inflammation (p < 0.001 for both groups). Dogs with detectable amounts of B. canis DNA in blood contain increased levels of SAA and total protein along with α-lipoproteins that display an increased diameter relative to those dogs with positive Babesia serology but undetectable levels of B. canis DNA in blood.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Veterinary Parasitology",
title = "Evidence of acute phase reaction in asymptomatic dogs naturally infected with Babesia canis",
volume = "282",
pages = "109140",
doi = "10.1016/j.vetpar.2020.109140"
}

Milanović, Z., Beletić, A., Vekić, J., Zeljković, A., Andrić, N., Božović, A. I., Spariosu, K., Radaković, M., Ajtić, J.,& Kovačević-Filipović, M.. (2020). Evidence of acute phase reaction in asymptomatic dogs naturally infected with Babesia canis. in Veterinary Parasitology
Elsevier Science Bv, Amsterdam., 282, 109140.
https://doi.org/10.1016/j.vetpar.2020.109140

Milanović Z, Beletić A, Vekić J, Zeljković A, Andrić N, Božović AI, Spariosu K, Radaković M, Ajtić J, Kovačević-Filipović M. Evidence of acute phase reaction in asymptomatic dogs naturally infected with Babesia canis. in Veterinary Parasitology. 2020;282:109140.
doi:10.1016/j.vetpar.2020.109140 .

Milanović, Zorana, Beletić, Anđelo, Vekić, Jelena, Zeljković, Aleksandra, Andrić, Nenad, Božović, Anja Ilić, Spariosu, Kristina, Radaković, Milena, Ajtić, Jelena, Kovačević-Filipović, Milica, "Evidence of acute phase reaction in asymptomatic dogs naturally infected with Babesia canis" in Veterinary Parasitology, 282 (2020):109140,
https://doi.org/10.1016/j.vetpar.2020.109140 . .

TY  - JOUR
AU  - Janjić, Filip
AU  - Milanović, Zorana
AU  - Ilić Božović, Anja
AU  - Andrić, Nenad
AU  - Spariosu, Kristina
AU  - Ajtić, Jelena
AU  - Beletić, Anđelo
AU  - Kovačević-Filipović, Milica
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2214
AB  - Haematologic abnormalities possibly associated with exposure to vector-borne pathogens are rarely reported in clinically healthy outdoor dogs. Therefore, we analysed changes in the complete blood count (CBC) of clinically healthy outdoor dogs seroreactive to Anaplasma spp. and Babesia spp., with or without microfilariosis. Stray, shelter and hunting dogs, 81 in total, that were polymerase chain reaction negative for Anaplasma spp. and Babesia spp. were divided into groups according to their seroreactive status and results of a modified Knott’s test: seronegative to both Anaplasma spp. and Babesia spp. SN (N=26); seroreactive to A. phagocythophilum SR-A (N=12); seroreactive to B. canis, B. gibsoni and/or B. vogeli SR-B (N=25); and seroreactive to both of the pathogens SR-AB (N=8). These four groups were negative to microfilariosis, unlike the fifth group, seroreactive to either or to both of the pathogens and with microfilariosis SR-M (N=10). The frequencies of CBC alterations among all analysed dogs were: 0.35 – leucocytosis, 0.44 – granulocytosis, 0.28 – anaemia, 0.74 – microcytosis, 0.37 – increased mean cell haemoglobin concentration (MCHC) and 0.33 – thrombocytopenia. The frequency of alterations did not differ across the groups. An exception was the SR-M group wherein increased MCHC peaked with a frequency of 0.80, while in the 
other four groups, the frequency ranged between 0.10 and 0.50. Clinically healthy outdoor dogs have multiple CBC abnormalities, consistent with stress and low-level chronic inflammation, but not associated with a previous exposure to Anaplasma spp. or Babesia spp. The presence of microfilaria increases haemolysis in vitro.
AB  - Klinički zdravi psi koji borave na otvorenom i koji su izloženi patogenima koje prenose vektori mogu imati hematološke premećaje vezane za dejstvo tih patogena. Ipak, hematološke pretrage se retko izvode na toj populaciji pasa. Stoga je cilj našeg rada bio da utvrdimo promene u krvnoj slici zdravih pasa lutalica, pasa smeštenih u azilima i lovačkih pasa, seroreaktivnih na uzročnike bolesti iz rodova Anaplasma i Babesia, sa ili bez mikrofilarioze. U ovom radu je ispitana krvna slika 81 psa. U studiju su uključeni psi kod kojih lančanom reakcijom polimerizacije nije pokazano prisustvo DNK Anaplasma spp. i Babesia spp. Psi su prema serološkom statusu raspoređeni u sledeće grupe: seronegativni na Anaplasma spp. i Babesia spp. SN (N=26), seroreaktivni na A. phagocytophilum SR-A (N=12), seroreaktivni na B. canis, B. gibsoni i/ili B. vogeli SR-B (N=25) i seroreaktivni na oba navedena patogena SR-AB (N=8). Ove četiri grupe su bile negativne na mikrofilariozu, dok je peta grupa, seroreaktivna na neki ili oba patogena imala i mikrofilarije SR-M (N=10). Učestalost promena kompletne krvne slike među svim ispitivanim psima je bila sledeća: 0,35 za leukocitozu, 0,44 za granulocitozu, 0,28 za anemiju, 0,74 za mikrocitozu, 0,37 za povećanu prosečnu koncentraciju hemoglobina u eritrocitima i 0,33 za trombocitopeniju. Grupe se nisu razlikovale u pogledu učestalosti navedenih promena. Izuzetak je grupa SR-M u kojoj je učestalost povećanja vrednosti za prosečnu koncentraciju hemoglobina u eritrocitima iznosila 0,80. U ostale četiri grupe ta učestalost je iznosila između 0,10 i 0,50. Zaključak je da ispitivani psi imaju višestruke poremećaje krvne slike koji najverovatnije odražavaju stres i nizak stepen hronične inflamacije, ali ne i vezu sa prethodnim kontaktom sa Anaplasma spp. i Babesia spp. Prisustvo mikrofilarija izaziva hemolizu in vitro.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Hаematologic indices in clinically healthy outdoor dogs exposed to vector-borne pathogens
T1  - Hematološki parametri kod klinički zdravih pasa koji borave na otvorenom i izloženi su patogenima koje prenose vektori
VL  - 74
IS  - 2
SP  - 178
EP  - 186
DO  - 10.2298/VETGL191216005J
ER  - 

@article{
author = "Janjić, Filip and Milanović, Zorana and Ilić Božović, Anja and Andrić, Nenad and Spariosu, Kristina and Ajtić, Jelena and Beletić, Anđelo and Kovačević-Filipović, Milica",
year = "2020",
abstract = "Haematologic abnormalities possibly associated with exposure to vector-borne pathogens are rarely reported in clinically healthy outdoor dogs. Therefore, we analysed changes in the complete blood count (CBC) of clinically healthy outdoor dogs seroreactive to Anaplasma spp. and Babesia spp., with or without microfilariosis. Stray, shelter and hunting dogs, 81 in total, that were polymerase chain reaction negative for Anaplasma spp. and Babesia spp. were divided into groups according to their seroreactive status and results of a modified Knott’s test: seronegative to both Anaplasma spp. and Babesia spp. SN (N=26); seroreactive to A. phagocythophilum SR-A (N=12); seroreactive to B. canis, B. gibsoni and/or B. vogeli SR-B (N=25); and seroreactive to both of the pathogens SR-AB (N=8). These four groups were negative to microfilariosis, unlike the fifth group, seroreactive to either or to both of the pathogens and with microfilariosis SR-M (N=10). The frequencies of CBC alterations among all analysed dogs were: 0.35 – leucocytosis, 0.44 – granulocytosis, 0.28 – anaemia, 0.74 – microcytosis, 0.37 – increased mean cell haemoglobin concentration (MCHC) and 0.33 – thrombocytopenia. The frequency of alterations did not differ across the groups. An exception was the SR-M group wherein increased MCHC peaked with a frequency of 0.80, while in the 
other four groups, the frequency ranged between 0.10 and 0.50. Clinically healthy outdoor dogs have multiple CBC abnormalities, consistent with stress and low-level chronic inflammation, but not associated with a previous exposure to Anaplasma spp. or Babesia spp. The presence of microfilaria increases haemolysis in vitro., Klinički zdravi psi koji borave na otvorenom i koji su izloženi patogenima koje prenose vektori mogu imati hematološke premećaje vezane za dejstvo tih patogena. Ipak, hematološke pretrage se retko izvode na toj populaciji pasa. Stoga je cilj našeg rada bio da utvrdimo promene u krvnoj slici zdravih pasa lutalica, pasa smeštenih u azilima i lovačkih pasa, seroreaktivnih na uzročnike bolesti iz rodova Anaplasma i Babesia, sa ili bez mikrofilarioze. U ovom radu je ispitana krvna slika 81 psa. U studiju su uključeni psi kod kojih lančanom reakcijom polimerizacije nije pokazano prisustvo DNK Anaplasma spp. i Babesia spp. Psi su prema serološkom statusu raspoređeni u sledeće grupe: seronegativni na Anaplasma spp. i Babesia spp. SN (N=26), seroreaktivni na A. phagocytophilum SR-A (N=12), seroreaktivni na B. canis, B. gibsoni i/ili B. vogeli SR-B (N=25) i seroreaktivni na oba navedena patogena SR-AB (N=8). Ove četiri grupe su bile negativne na mikrofilariozu, dok je peta grupa, seroreaktivna na neki ili oba patogena imala i mikrofilarije SR-M (N=10). Učestalost promena kompletne krvne slike među svim ispitivanim psima je bila sledeća: 0,35 za leukocitozu, 0,44 za granulocitozu, 0,28 za anemiju, 0,74 za mikrocitozu, 0,37 za povećanu prosečnu koncentraciju hemoglobina u eritrocitima i 0,33 za trombocitopeniju. Grupe se nisu razlikovale u pogledu učestalosti navedenih promena. Izuzetak je grupa SR-M u kojoj je učestalost povećanja vrednosti za prosečnu koncentraciju hemoglobina u eritrocitima iznosila 0,80. U ostale četiri grupe ta učestalost je iznosila između 0,10 i 0,50. Zaključak je da ispitivani psi imaju višestruke poremećaje krvne slike koji najverovatnije odražavaju stres i nizak stepen hronične inflamacije, ali ne i vezu sa prethodnim kontaktom sa Anaplasma spp. i Babesia spp. Prisustvo mikrofilarija izaziva hemolizu in vitro.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Hаematologic indices in clinically healthy outdoor dogs exposed to vector-borne pathogens, Hematološki parametri kod klinički zdravih pasa koji borave na otvorenom i izloženi su patogenima koje prenose vektori",
volume = "74",
number = "2",
pages = "178-186",
doi = "10.2298/VETGL191216005J"
}

Janjić, F., Milanović, Z., Ilić Božović, A., Andrić, N., Spariosu, K., Ajtić, J., Beletić, A.,& Kovačević-Filipović, M.. (2020). Hаematologic indices in clinically healthy outdoor dogs exposed to vector-borne pathogens. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 74(2), 178-186.
https://doi.org/10.2298/VETGL191216005J

Janjić F, Milanović Z, Ilić Božović A, Andrić N, Spariosu K, Ajtić J, Beletić A, Kovačević-Filipović M. Hаematologic indices in clinically healthy outdoor dogs exposed to vector-borne pathogens. in Veterinarski Glasnik. 2020;74(2):178-186.
doi:10.2298/VETGL191216005J .

Janjić, Filip, Milanović, Zorana, Ilić Božović, Anja, Andrić, Nenad, Spariosu, Kristina, Ajtić, Jelena, Beletić, Anđelo, Kovačević-Filipović, Milica, "Hаematologic indices in clinically healthy outdoor dogs exposed to vector-borne pathogens" in Veterinarski Glasnik, 74, no. 2 (2020):178-186,
https://doi.org/10.2298/VETGL191216005J . .

TY  - JOUR
AU  - Mitrović, Branislava
AU  - Todorović, Dragana
AU  - Ajtić, Jelena
AU  - Vranješ, Borjana
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1794
AB  - This review paper discusses the content of natural ( 40K, 238U, 226Ra, and 232Th) and artificial (137Cs) radionuclides in the soil of the mountains of Maljen, Tara and Kopaonik in the Republic of Serbia over 2002-2015. In addition, the paper gives radiation hazard parameters, i.e., radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external hazard index, annual gonadal dose equivalent, and excess lifetime cancer risk outdoors that we calculated from the obtained content of the natural radionuclides in the soil samples. We compared the parameters to previously published results for different parts of the country and looked into the radioecological status of the investigated areas.
AB  - U radu su prikazani rezultati gamaspektrometrijskog određivanja sadržaja prirodnih (40K, 238U, 226Ra i 232Th) i proizvedenog (137Cs) radionuklida u zemljištu sa područja planina Maljen, Tara i Kopaonik. Uzorci zemljišta prikupljeni su u periodu od 2002. do 2015. godine na različitim nadmorskim visinama. Na osnovu sadržaja radionuklida u zemljištu odredili smo parametre radijacionog rizika: radijum ekvivalentnu aktivnost, jačinu doze, godišnju efektivnu dozu spoljašnjeg zračenja, indeks spoljašnjeg hazarda, godišnju gonadnu dozu i faktor rizika pojave kancera na području planinskih regiona Republike Srbije, i potom ih uporedili sa ranije objavljenim rezultatima za pojedine regione Republike Srbije.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia
T1  - Prirodni i proizvedeni radionuklidi u zemljištu planinskih regiona Republike Srbije i parametri radijacionog rizika
VL  - 65
IS  - 1
SP  - 1
EP  - 18
DO  - 10.2298/JAS2001001M
ER  - 

@article{
author = "Mitrović, Branislava and Todorović, Dragana and Ajtić, Jelena and Vranješ, Borjana",
year = "2020",
abstract = "This review paper discusses the content of natural ( 40K, 238U, 226Ra, and 232Th) and artificial (137Cs) radionuclides in the soil of the mountains of Maljen, Tara and Kopaonik in the Republic of Serbia over 2002-2015. In addition, the paper gives radiation hazard parameters, i.e., radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external hazard index, annual gonadal dose equivalent, and excess lifetime cancer risk outdoors that we calculated from the obtained content of the natural radionuclides in the soil samples. We compared the parameters to previously published results for different parts of the country and looked into the radioecological status of the investigated areas., U radu su prikazani rezultati gamaspektrometrijskog određivanja sadržaja prirodnih (40K, 238U, 226Ra i 232Th) i proizvedenog (137Cs) radionuklida u zemljištu sa područja planina Maljen, Tara i Kopaonik. Uzorci zemljišta prikupljeni su u periodu od 2002. do 2015. godine na različitim nadmorskim visinama. Na osnovu sadržaja radionuklida u zemljištu odredili smo parametre radijacionog rizika: radijum ekvivalentnu aktivnost, jačinu doze, godišnju efektivnu dozu spoljašnjeg zračenja, indeks spoljašnjeg hazarda, godišnju gonadnu dozu i faktor rizika pojave kancera na području planinskih regiona Republike Srbije, i potom ih uporedili sa ranije objavljenim rezultatima za pojedine regione Republike Srbije.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia, Prirodni i proizvedeni radionuklidi u zemljištu planinskih regiona Republike Srbije i parametri radijacionog rizika",
volume = "65",
number = "1",
pages = "1-18",
doi = "10.2298/JAS2001001M"
}

Mitrović, B., Todorović, D., Ajtić, J.,& Vranješ, B.. (2020). A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 65(1), 1-18.
https://doi.org/10.2298/JAS2001001M

Mitrović B, Todorović D, Ajtić J, Vranješ B. A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia. in Journal of Agricultural Sciences (Belgrade). 2020;65(1):1-18.
doi:10.2298/JAS2001001M .

Mitrović, Branislava, Todorović, Dragana, Ajtić, Jelena, Vranješ, Borjana, "A review: Natural and artificial radionuclides and radiation hazard parameters in the soil of mountain regions in Serbia" in Journal of Agricultural Sciences (Belgrade), 65, no. 1 (2020):1-18,
https://doi.org/10.2298/JAS2001001M . .

TY  - JOUR
AU  - Vranješ, Borjana
AU  - Milićević, Dragan
AU  - Šefer, Dragan
AU  - Stefanović, Srđan
AU  - Ajtić, Jelena
AU  - Mitrović, Branislava
PY  - 2020
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1809
AB  - Naturally occurring radionuclides and toxic elements are ubiquitous in the environment and can pose a great risk to animals health. Control of these toxic substances in animal diet is essential for animals welfare, human nutrition risk management as well as environmental protection. Our study addresses these issues by determining a content of natural radionuclides (K-40, U-238 and Ra-226), and toxic elements (Cd, Cr, As) in total of 108 samples: 36 monocalcium phosphate, 36 complete feed and 36 pig manure samples that were collected from 6 different commercial farms in the Republic of Serbia. In monocalcium phosphate the content of K-40, U-238 and Ra-226 ranged from 7.6-23.4 Bq kg(-1), 13.2-1778 Bq kg(-1) and 3.6-13.5 Bq kg(-)1, respectively. In complete feed samples, 40K ranged from 170 to 306 Bq kg(-1), U-238 from minimum detectable activity (MDA) to 9.1 Bq kg(-1), and Ra-226 from MDA-5.5 Bq kg(-1), while in pig manure K-40 ranged from 146 to 531 Bq kg(-1), U-238 from MDA-30.1 Bq kg(-1), and Ra-226 from MDA-10 Bq kg(-1). The concentrations of Cd, Cr and As in monocalcium phosphate were 0.26-14.9 mg kg(-1), 10.3-497 mg kg(-1), and 4.2-5.5 mg kg(-1), respectively. In complete feed, the content of Cd, Cr and As ranged from minimum detectable concentration (MDC) - 0.78 mg kg-1, 0.30-7.41 mg kg(-1), and 0.09-0.31 mg kg(-1), respectively. In pig manure Cd, Cr and As ranged from 0.8-2.3 mg kg(-1), 2.3-22.2 mg kg(-1), and 0.51-5.45 mg kg(-1), respectively. The obtained results showed that Cd concentration inmonocalcium phosphate exceeded the maximum permissible legislative concentrations for phosphate additives. Monocalcium phosphate is the main source of U-238 and Cr in complete feed, while Cd derives from other sources. For that reason excessive use of monocalcium phosphate can lead to high levels of these pollutants in complete feed and consequently in manure.
PB  - Elsevier, Amsterdam
T2  - Science of The Total Environment
T1  - Presence of natural radionuclides and toxic elements in monocalcium phosphate, complete feed and pig manure
VL  - 720
SP  - 137578
DO  - 10.1016/j.scitotenv.2020.137578
ER  - 

@article{
author = "Vranješ, Borjana and Milićević, Dragan and Šefer, Dragan and Stefanović, Srđan and Ajtić, Jelena and Mitrović, Branislava",
year = "2020",
abstract = "Naturally occurring radionuclides and toxic elements are ubiquitous in the environment and can pose a great risk to animals health. Control of these toxic substances in animal diet is essential for animals welfare, human nutrition risk management as well as environmental protection. Our study addresses these issues by determining a content of natural radionuclides (K-40, U-238 and Ra-226), and toxic elements (Cd, Cr, As) in total of 108 samples: 36 monocalcium phosphate, 36 complete feed and 36 pig manure samples that were collected from 6 different commercial farms in the Republic of Serbia. In monocalcium phosphate the content of K-40, U-238 and Ra-226 ranged from 7.6-23.4 Bq kg(-1), 13.2-1778 Bq kg(-1) and 3.6-13.5 Bq kg(-)1, respectively. In complete feed samples, 40K ranged from 170 to 306 Bq kg(-1), U-238 from minimum detectable activity (MDA) to 9.1 Bq kg(-1), and Ra-226 from MDA-5.5 Bq kg(-1), while in pig manure K-40 ranged from 146 to 531 Bq kg(-1), U-238 from MDA-30.1 Bq kg(-1), and Ra-226 from MDA-10 Bq kg(-1). The concentrations of Cd, Cr and As in monocalcium phosphate were 0.26-14.9 mg kg(-1), 10.3-497 mg kg(-1), and 4.2-5.5 mg kg(-1), respectively. In complete feed, the content of Cd, Cr and As ranged from minimum detectable concentration (MDC) - 0.78 mg kg-1, 0.30-7.41 mg kg(-1), and 0.09-0.31 mg kg(-1), respectively. In pig manure Cd, Cr and As ranged from 0.8-2.3 mg kg(-1), 2.3-22.2 mg kg(-1), and 0.51-5.45 mg kg(-1), respectively. The obtained results showed that Cd concentration inmonocalcium phosphate exceeded the maximum permissible legislative concentrations for phosphate additives. Monocalcium phosphate is the main source of U-238 and Cr in complete feed, while Cd derives from other sources. For that reason excessive use of monocalcium phosphate can lead to high levels of these pollutants in complete feed and consequently in manure.",
publisher = "Elsevier, Amsterdam",
journal = "Science of The Total Environment",
title = "Presence of natural radionuclides and toxic elements in monocalcium phosphate, complete feed and pig manure",
volume = "720",
pages = "137578",
doi = "10.1016/j.scitotenv.2020.137578"
}

Vranješ, B., Milićević, D., Šefer, D., Stefanović, S., Ajtić, J.,& Mitrović, B.. (2020). Presence of natural radionuclides and toxic elements in monocalcium phosphate, complete feed and pig manure. in Science of The Total Environment
Elsevier, Amsterdam., 720, 137578.
https://doi.org/10.1016/j.scitotenv.2020.137578

Vranješ B, Milićević D, Šefer D, Stefanović S, Ajtić J, Mitrović B. Presence of natural radionuclides and toxic elements in monocalcium phosphate, complete feed and pig manure. in Science of The Total Environment. 2020;720:137578.
doi:10.1016/j.scitotenv.2020.137578 .

Vranješ, Borjana, Milićević, Dragan, Šefer, Dragan, Stefanović, Srđan, Ajtić, Jelena, Mitrović, Branislava, "Presence of natural radionuclides and toxic elements in monocalcium phosphate, complete feed and pig manure" in Science of The Total Environment, 720 (2020):137578,
https://doi.org/10.1016/j.scitotenv.2020.137578 . .