TY  - CONF
AU  - Božić, D.
AU  - Nikolić, N.
AU  - Obradović, N.
AU  - Loddo, D.
AU  - Stojićević, D.
AU  - Saulić, M.
AU  - Savić, A.
AU  - Vrbničanin, S.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6456
AB  - Poznavanje popolacionih varijabilnosti korovskih vrsta može da bude veoma korsino za njihovo efikasno suzbijanje, usled toga što morfo-anatomske i genetičke razlike između populacija mogu usloviti i različitu osetljivost na herbicide. Razlike između populacija različitog geografskog porekla ne moraju biti uslovljenje isključivo njihovim genetičkim razlikama, već mogu biti posledica uticaja agroekoloških uslova u kojima su se biljke razvijale. Kako bi se precizno utvrdila populacija različitog geografskog porekla neophodno ih je gajiti u istim uslovima sredine kako bi se eliminisao efekat sredine na njihov rast, razviće i plodonošenje.
Populaciona varijabilnost invazivne korovske vrste Abutilon theophrasti Medic. Je analizirana kod 12 populacija različitog geografskog porekla (Katalonija – Španija, Hrvatska, Grčka, Mađarska, Ajova-SAD, Legnaro – Italija, Portugal, Slovenija, Srbija). U fazi fizičke zrelosti semena su sakupljena u navedenim područjima I 2014. posejana na oglednom dobru Poljoprivrednog fakulteta “Radmilovac” u gustini 1 biljka na 0,25 m2. U fazi plodonešenja A. theophrasti mereni su brojni vegetativni (visina stabla, dužina korena, broj grana, broj listova, površina listova) i generativni (broj čaura, prečnik čaura, broj kućica u čauri, masa semena po biljci) parametri kod ispitivanih populacija.
Generalno, utvrđena je veoma izražajna intrapopulaciona varijabilnost na nivou većine generativnih i vegetativnih parametara. Međutim, kod interpopulacione varijabilnosti značajne razlike u vegetativnim parametrima su zabeležene samo između pojedinih populacija (Arganda: Španija: Grčka, Srbija, Mađarska i Italija (Legnaro), zatim SAD (Ajova) : Srbija i Grčka, pri čemu su najizraženije bile u odnosu na površinu listova. U odnosu na generativne parameter razlike između populacija su bile najizraženije za broj kućica po čauri i prečnik čaura. Radi sveobuhvatne analize varijabilnosti ispitivanih populacija neophodno je proučiti i njihovu anatomsku građu, površinske structure lista (maljavost), fizičke karakteristike semena, kao i genetičku varijabilnost populacija na molekularnom nivou.

Zahvaljujemo s eministrarstvu prosvete, nauke i tehnološkog razvoja republike srbije (projekat III 46008) i EU FP7-REGPOT AREA projektu koji su podržali ova istraživanja.
PB  - Društvo za zaštitu bilja Srbije
C3  - XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea
T1  - Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla
SP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6456
ER  - 

@conference{
author = "Božić, D. and Nikolić, N. and Obradović, N. and Loddo, D. and Stojićević, D. and Saulić, M. and Savić, A. and Vrbničanin, S.",
year = "2015",
abstract = "Poznavanje popolacionih varijabilnosti korovskih vrsta može da bude veoma korsino za njihovo efikasno suzbijanje, usled toga što morfo-anatomske i genetičke razlike između populacija mogu usloviti i različitu osetljivost na herbicide. Razlike između populacija različitog geografskog porekla ne moraju biti uslovljenje isključivo njihovim genetičkim razlikama, već mogu biti posledica uticaja agroekoloških uslova u kojima su se biljke razvijale. Kako bi se precizno utvrdila populacija različitog geografskog porekla neophodno ih je gajiti u istim uslovima sredine kako bi se eliminisao efekat sredine na njihov rast, razviće i plodonošenje.
Populaciona varijabilnost invazivne korovske vrste Abutilon theophrasti Medic. Je analizirana kod 12 populacija različitog geografskog porekla (Katalonija – Španija, Hrvatska, Grčka, Mađarska, Ajova-SAD, Legnaro – Italija, Portugal, Slovenija, Srbija). U fazi fizičke zrelosti semena su sakupljena u navedenim područjima I 2014. posejana na oglednom dobru Poljoprivrednog fakulteta “Radmilovac” u gustini 1 biljka na 0,25 m2. U fazi plodonešenja A. theophrasti mereni su brojni vegetativni (visina stabla, dužina korena, broj grana, broj listova, površina listova) i generativni (broj čaura, prečnik čaura, broj kućica u čauri, masa semena po biljci) parametri kod ispitivanih populacija.
Generalno, utvrđena je veoma izražajna intrapopulaciona varijabilnost na nivou većine generativnih i vegetativnih parametara. Međutim, kod interpopulacione varijabilnosti značajne razlike u vegetativnim parametrima su zabeležene samo između pojedinih populacija (Arganda: Španija: Grčka, Srbija, Mađarska i Italija (Legnaro), zatim SAD (Ajova) : Srbija i Grčka, pri čemu su najizraženije bile u odnosu na površinu listova. U odnosu na generativne parameter razlike između populacija su bile najizraženije za broj kućica po čauri i prečnik čaura. Radi sveobuhvatne analize varijabilnosti ispitivanih populacija neophodno je proučiti i njihovu anatomsku građu, površinske structure lista (maljavost), fizičke karakteristike semena, kao i genetičku varijabilnost populacija na molekularnom nivou.

Zahvaljujemo s eministrarstvu prosvete, nauke i tehnološkog razvoja republike srbije (projekat III 46008) i EU FP7-REGPOT AREA projektu koji su podržali ova istraživanja.",
publisher = "Društvo za zaštitu bilja Srbije",
journal = "XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea",
title = "Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla",
pages = "78",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6456"
}

Božić, D., Nikolić, N., Obradović, N., Loddo, D., Stojićević, D., Saulić, M., Savić, A.,& Vrbničanin, S.. (2015). Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla. in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea
Društvo za zaštitu bilja Srbije., 78.
https://hdl.handle.net/21.15107/rcub_agrospace_6456

Božić D, Nikolić N, Obradović N, Loddo D, Stojićević D, Saulić M, Savić A, Vrbničanin S. Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla. in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea. 2015;:78.
https://hdl.handle.net/21.15107/rcub_agrospace_6456 .

Božić, D., Nikolić, N., Obradović, N., Loddo, D., Stojićević, D., Saulić, M., Savić, A., Vrbničanin, S., "Populaciona varijabilnost Abutilon theophrasti Medik. različitog geografskog porekla" in XIII Savetovanje o zaštiti bilja, Zlatibor, Zbornik rezimea (2015):78,
https://hdl.handle.net/21.15107/rcub_agrospace_6456 .

TY  - CONF
AU  - Vukašinović, Ivana
AU  - Todorović, D.
AU  - Nikolić, N.
AU  - Nikolić, J.
AU  - Rajačić, M.
AU  - Janković, M.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3545
AB  - Study of coal fired power plants environmental impact have been performed analyzing activity concentrations of natural radionuclides 238U, 226Ra, 232Th and 40K in the samples of soil and native vegetation collected in the vicinity of TE “Kolubara”, TE “Morava” and TE “Nikola Tesla” A and B power plants. Soil-to-grass transfer factor values (kg kg-1 dry mass) were calculated. Some soil characteristics such as particle size distribution, soil pH, organic matter content and carbonate content were determined in order to examine their influence on natural radionuclides soil-to-plant transfer factors, assuming TFs are mostly controlled by root uptake.
PB  - RAD Association
C3  - RAD Conference Proceedings
T1  - Influence of soil properties on soil-to-plant transfer factors of natural radionuclides in the vicinity of coal fired power plants in Serbia
EP  - 270
SP  - 267
VL  - 2014-May
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3545
ER  - 

@conference{
author = "Vukašinović, Ivana and Todorović, D. and Nikolić, N. and Nikolić, J. and Rajačić, M. and Janković, M.",
year = "2014",
abstract = "Study of coal fired power plants environmental impact have been performed analyzing activity concentrations of natural radionuclides 238U, 226Ra, 232Th and 40K in the samples of soil and native vegetation collected in the vicinity of TE “Kolubara”, TE “Morava” and TE “Nikola Tesla” A and B power plants. Soil-to-grass transfer factor values (kg kg-1 dry mass) were calculated. Some soil characteristics such as particle size distribution, soil pH, organic matter content and carbonate content were determined in order to examine their influence on natural radionuclides soil-to-plant transfer factors, assuming TFs are mostly controlled by root uptake.",
publisher = "RAD Association",
journal = "RAD Conference Proceedings",
title = "Influence of soil properties on soil-to-plant transfer factors of natural radionuclides in the vicinity of coal fired power plants in Serbia",
pages = "270-267",
volume = "2014-May",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3545"
}

Vukašinović, I., Todorović, D., Nikolić, N., Nikolić, J., Rajačić, M.,& Janković, M.. (2014). Influence of soil properties on soil-to-plant transfer factors of natural radionuclides in the vicinity of coal fired power plants in Serbia. in RAD Conference Proceedings
RAD Association., 2014-May, 267-270.
https://hdl.handle.net/21.15107/rcub_agrospace_3545

Vukašinović I, Todorović D, Nikolić N, Nikolić J, Rajačić M, Janković M. Influence of soil properties on soil-to-plant transfer factors of natural radionuclides in the vicinity of coal fired power plants in Serbia. in RAD Conference Proceedings. 2014;2014-May:267-270.
https://hdl.handle.net/21.15107/rcub_agrospace_3545 .

Vukašinović, Ivana, Todorović, D., Nikolić, N., Nikolić, J., Rajačić, M., Janković, M., "Influence of soil properties on soil-to-plant transfer factors of natural radionuclides in the vicinity of coal fired power plants in Serbia" in RAD Conference Proceedings, 2014-May (2014):267-270,
https://hdl.handle.net/21.15107/rcub_agrospace_3545 .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Sekulić, D.L.
AU  - Nikolić, N.
AU  - Slankamenac, M.P.
AU  - Aleksić, O.S.
AU  - Danninger, H.
AU  - Halwax, E.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3106
AB  - In this work we have analyzed the effects of Ti doping on structural and electrical properties of alpha-Fe2O3. When the amount of added Ti (5 wt.% TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3), c= 13.7484(1) slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.% TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100-1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Structural and Electrical Properties of Ti Doped alpha-Fe2O3
EP  - 292
IS  - 3
SP  - 281
VL  - 45
DO  - 10.2298/SOS1303281N
ER  - 

@article{
author = "Nikolić, M.V. and Sekulić, D.L. and Nikolić, N. and Slankamenac, M.P. and Aleksić, O.S. and Danninger, H. and Halwax, E. and Pavlović, Vladimir and Nikolić, P.M.",
year = "2013",
abstract = "In this work we have analyzed the effects of Ti doping on structural and electrical properties of alpha-Fe2O3. When the amount of added Ti (5 wt.% TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3), c= 13.7484(1) slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.% TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100-1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Structural and Electrical Properties of Ti Doped alpha-Fe2O3",
pages = "292-281",
number = "3",
volume = "45",
doi = "10.2298/SOS1303281N"
}

Nikolić, M.V., Sekulić, D.L., Nikolić, N., Slankamenac, M.P., Aleksić, O.S., Danninger, H., Halwax, E., Pavlović, V.,& Nikolić, P.M.. (2013). Structural and Electrical Properties of Ti Doped alpha-Fe2O3. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 45(3), 281-292.
https://doi.org/10.2298/SOS1303281N

Nikolić M, Sekulić D, Nikolić N, Slankamenac M, Aleksić O, Danninger H, Halwax E, Pavlović V, Nikolić P. Structural and Electrical Properties of Ti Doped alpha-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N .

Nikolić, M.V., Sekulić, D.L., Nikolić, N., Slankamenac, M.P., Aleksić, O.S., Danninger, H., Halwax, E., Pavlović, Vladimir, Nikolić, P.M., "Structural and Electrical Properties of Ti Doped alpha-Fe2O3" in Science of Sintering, 45, no. 3 (2013):281-292,
https://doi.org/10.2298/SOS1303281N . .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Slankamenac, M.P.
AU  - Nikolić, N.
AU  - Sekulić, D.L.
AU  - Aleksić, O.S.
AU  - Mitrić, M.
AU  - Ivetić, T.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3049
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn
EP  - 321
IS  - 3
SP  - 307
VL  - 44
DO  - 10.2298/SOS1203307N
ER  - 

@article{
author = "Nikolić, M.V. and Slankamenac, M.P. and Nikolić, N. and Sekulić, D.L. and Aleksić, O.S. and Mitrić, M. and Ivetić, T. and Pavlović, Vladimir and Nikolić, P.M.",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn",
pages = "321-307",
number = "3",
volume = "44",
doi = "10.2298/SOS1203307N"
}

Nikolić, M.V., Slankamenac, M.P., Nikolić, N., Sekulić, D.L., Aleksić, O.S., Mitrić, M., Ivetić, T., Pavlović, V.,& Nikolić, P.M.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(3), 307-321.
https://doi.org/10.2298/SOS1203307N

Nikolić M, Slankamenac M, Nikolić N, Sekulić D, Aleksić O, Mitrić M, Ivetić T, Pavlović V, Nikolić P. Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering. 2012;44(3):307-321.
doi:10.2298/SOS1203307N .

Nikolić, M.V., Slankamenac, M.P., Nikolić, N., Sekulić, D.L., Aleksić, O.S., Mitrić, M., Ivetić, T., Pavlović, Vladimir, Nikolić, P.M., "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn" in Science of Sintering, 44, no. 3 (2012):307-321,
https://doi.org/10.2298/SOS1203307N . .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Slankamenac, Miloš
AU  - Nikolić, N.
AU  - Sekulić, D. I.
AU  - Aleksić, Obrad S.
AU  - Mitrić, Miodrag
AU  - Ivetić, Tamara
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija M.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/523
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5685
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
PB  - Belgrade : Serbian Ceramic Society
C3  - The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn
EP  - 8
SP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_dais_523
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Slankamenac, Miloš and Nikolić, N. and Sekulić, D. I. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara and Pavlović, Vladimir B. and Nikolić, Pantelija M.",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225°C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn",
pages = "8-8",
url = "https://hdl.handle.net/21.15107/rcub_dais_523"
}

Nikolić, M. V., Slankamenac, M., Nikolić, N., Sekulić, D. I., Aleksić, O. S., Mitrić, M., Ivetić, T., Pavlović, V. B.,& Nikolić, P. M.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts
Belgrade : Serbian Ceramic Society., 8-8.
https://hdl.handle.net/21.15107/rcub_dais_523

Nikolić MV, Slankamenac M, Nikolić N, Sekulić DI, Aleksić OS, Mitrić M, Ivetić T, Pavlović VB, Nikolić PM. Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn. in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts. 2012;:8-8.
https://hdl.handle.net/21.15107/rcub_dais_523 .

Nikolić, Maria Vesna, Slankamenac, Miloš, Nikolić, N., Sekulić, D. I., Aleksić, Obrad S., Mitrić, Miodrag, Ivetić, Tamara, Pavlović, Vladimir B., Nikolić, Pantelija M., "Study of Dielectric Behavior and Electrical Properties of Hematite a-Fe2O3 Doped with Zn" in The First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstracts (2012):8-8,
https://hdl.handle.net/21.15107/rcub_dais_523 .

TY  - JOUR
AU  - Obradović, N.
AU  - Djordjević, N.
AU  - Filipović, Suzana
AU  - Nikolić, N.
AU  - Kosanović, Darko
AU  - Mitrić, M.
AU  - Marković, S.
AU  - Pavlović, Vladimir
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2992
AB  - Due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 2.50 mass% Bi2O3 has been added to the starting mixtures. Liquid phase sintering caused by the presence of bismuth-oxide lowers the temperature of cordierite formation. The mechanical activation of the starting mixtures (0-56 min in vibro-mill) additionally lowers sintering temperatures. The sintering process was performed at 1200, 1300, 1350 and 1400 degrees C, for 2 h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered materials was analyzed by the X-ray diffraction method. Furthermore, scanning electron microscopy (SEM) was used in the analysis of the powder morphology.
PB  - Elsevier, Amsterdam
T2  - Powder Technology
T1  - Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive
EP  - 161
SP  - 157
VL  - 218
DO  - 10.1016/j.powtec.2011.12.012
ER  - 

@article{
author = "Obradović, N. and Djordjević, N. and Filipović, Suzana and Nikolić, N. and Kosanović, Darko and Mitrić, M. and Marković, S. and Pavlović, Vladimir",
year = "2012",
abstract = "Due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 2.50 mass% Bi2O3 has been added to the starting mixtures. Liquid phase sintering caused by the presence of bismuth-oxide lowers the temperature of cordierite formation. The mechanical activation of the starting mixtures (0-56 min in vibro-mill) additionally lowers sintering temperatures. The sintering process was performed at 1200, 1300, 1350 and 1400 degrees C, for 2 h. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders and sintered materials was analyzed by the X-ray diffraction method. Furthermore, scanning electron microscopy (SEM) was used in the analysis of the powder morphology.",
publisher = "Elsevier, Amsterdam",
journal = "Powder Technology",
title = "Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive",
pages = "161-157",
volume = "218",
doi = "10.1016/j.powtec.2011.12.012"
}

Obradović, N., Djordjević, N., Filipović, S., Nikolić, N., Kosanović, D., Mitrić, M., Marković, S.,& Pavlović, V.. (2012). Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive. in Powder Technology
Elsevier, Amsterdam., 218, 157-161.
https://doi.org/10.1016/j.powtec.2011.12.012

Obradović N, Djordjević N, Filipović S, Nikolić N, Kosanović D, Mitrić M, Marković S, Pavlović V. Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive. in Powder Technology. 2012;218:157-161.
doi:10.1016/j.powtec.2011.12.012 .

Obradović, N., Djordjević, N., Filipović, Suzana, Nikolić, N., Kosanović, Darko, Mitrić, M., Marković, S., Pavlović, Vladimir, "Influence of mechanochemical activation on the sintering of cordierite ceramics in the presence of Bi2O3 as a functional additive" in Powder Technology, 218 (2012):157-161,
https://doi.org/10.1016/j.powtec.2011.12.012 . .

TY  - JOUR
AU  - Obradović, N.
AU  - Nikolić, M.V.
AU  - Nikolić, N.
AU  - Filipović, Suzana
AU  - Mitrić, M.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
AU  - Djordjević, Antonije
AU  - Ristić, M.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3052
AB  - Mixtures of BaCO3, ZnO and TiO2 powders, with molar ratio of 1:2:4, were mechanically activated for 20, 40 and minutes in a planetary ball mill. The resulting powders were compacted into pellets and isothermally sintered at 1250 degrees C for 2h with a heating rate of 10 degrees C/min. X-ray diffraction analysis of obtained powders and sintered samples was performed in order to investigate changes of the phase composition. The microstructure of sintered samples was examined by scanning electron microscopy. The photoacoustic phase and amplitude spectra of sintered samples were measured as a function of the laser beam modulating frequency using a transmission detection configuration. Fitting of experimental data enabled determination of photoacoustic properties including thermal diffusivity. Based on the results obtained correlation between thermal diffusivity and experimental conditions, as well the samples microstructure characteristics, was discussed.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Synthesis of Barium-zinc-titanate Ceramics
EP  - 71
IS  - 1
SP  - 65
VL  - 44
DO  - 10.2298/SOS1201065O
ER  - 

@article{
author = "Obradović, N. and Nikolić, M.V. and Nikolić, N. and Filipović, Suzana and Mitrić, M. and Pavlović, Vladimir and Nikolić, P.M. and Djordjević, Antonije and Ristić, M.M.",
year = "2012",
abstract = "Mixtures of BaCO3, ZnO and TiO2 powders, with molar ratio of 1:2:4, were mechanically activated for 20, 40 and minutes in a planetary ball mill. The resulting powders were compacted into pellets and isothermally sintered at 1250 degrees C for 2h with a heating rate of 10 degrees C/min. X-ray diffraction analysis of obtained powders and sintered samples was performed in order to investigate changes of the phase composition. The microstructure of sintered samples was examined by scanning electron microscopy. The photoacoustic phase and amplitude spectra of sintered samples were measured as a function of the laser beam modulating frequency using a transmission detection configuration. Fitting of experimental data enabled determination of photoacoustic properties including thermal diffusivity. Based on the results obtained correlation between thermal diffusivity and experimental conditions, as well the samples microstructure characteristics, was discussed.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Synthesis of Barium-zinc-titanate Ceramics",
pages = "71-65",
number = "1",
volume = "44",
doi = "10.2298/SOS1201065O"
}

Obradović, N., Nikolić, M.V., Nikolić, N., Filipović, S., Mitrić, M., Pavlović, V., Nikolić, P.M., Djordjević, A.,& Ristić, M.M.. (2012). Synthesis of Barium-zinc-titanate Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(1), 65-71.
https://doi.org/10.2298/SOS1201065O

Obradović N, Nikolić M, Nikolić N, Filipović S, Mitrić M, Pavlović V, Nikolić P, Djordjević A, Ristić M. Synthesis of Barium-zinc-titanate Ceramics. in Science of Sintering. 2012;44(1):65-71.
doi:10.2298/SOS1201065O .

Obradović, N., Nikolić, M.V., Nikolić, N., Filipović, Suzana, Mitrić, M., Pavlović, Vladimir, Nikolić, P.M., Djordjević, Antonije, Ristić, M.M., "Synthesis of Barium-zinc-titanate Ceramics" in Science of Sintering, 44, no. 1 (2012):65-71,
https://doi.org/10.2298/SOS1201065O . .

TY  - JOUR
AU  - Tomić, Zorica
AU  - Djordjević, A.R.
AU  - Rajković, Miloš
AU  - Vukašinović, Ivana
AU  - Nikolić, N.S.
AU  - Pavlović, Vladimir
AU  - Lačnjevac, Časlav
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2420
AB  - Primordial radionuclides present in the rocks and minerals of the earth's crust are naturally occurring source of radiation that has important impact on human health. Therefore, it is essential to evaluate origin, mobility and transfer of natural radionuclides in ecosystem. Our paper represents the results of influence of mineral composition, sand-, silt-, and clay-size mechanical fraction and heavy mineral fraction on distribution and mobility of natural radionuclides 238U, 232Th, 226Ra and 40K in profiles of soil type rigosol, from the area of school estate good "Radmilovac" of Faculty of Agriculture, Zemun, University of Belgrade. Methods used were X-ray powder diffraction, heavy liquid mineral separation, HCBr3, scanning electron microscopy (SEM) and gamma-ray spectrometry. Analysis of the results showed correlation of natural radionuclides with heavy mineral fraction (Fe oxides and hydroxides, epidote, ilmeniterutile, staurolite and zircon, garnet, amphibole) and secondary minerals (Ca montmorillonite, mix layer silicates (MSS), illite, kaolinite and vermiculite).
T2  - Sensors and Transducers
T1  - Impact of mineral composition on the distribution of natural radionuclides in rigosol-anthrosol
EP  - 130
IS  - 2
SP  - 115
VL  - 125
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2420
ER  - 

@article{
author = "Tomić, Zorica and Djordjević, A.R. and Rajković, Miloš and Vukašinović, Ivana and Nikolić, N.S. and Pavlović, Vladimir and Lačnjevac, Časlav",
year = "2011",
abstract = "Primordial radionuclides present in the rocks and minerals of the earth's crust are naturally occurring source of radiation that has important impact on human health. Therefore, it is essential to evaluate origin, mobility and transfer of natural radionuclides in ecosystem. Our paper represents the results of influence of mineral composition, sand-, silt-, and clay-size mechanical fraction and heavy mineral fraction on distribution and mobility of natural radionuclides 238U, 232Th, 226Ra and 40K in profiles of soil type rigosol, from the area of school estate good "Radmilovac" of Faculty of Agriculture, Zemun, University of Belgrade. Methods used were X-ray powder diffraction, heavy liquid mineral separation, HCBr3, scanning electron microscopy (SEM) and gamma-ray spectrometry. Analysis of the results showed correlation of natural radionuclides with heavy mineral fraction (Fe oxides and hydroxides, epidote, ilmeniterutile, staurolite and zircon, garnet, amphibole) and secondary minerals (Ca montmorillonite, mix layer silicates (MSS), illite, kaolinite and vermiculite).",
journal = "Sensors and Transducers",
title = "Impact of mineral composition on the distribution of natural radionuclides in rigosol-anthrosol",
pages = "130-115",
number = "2",
volume = "125",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2420"
}

Tomić, Z., Djordjević, A.R., Rajković, M., Vukašinović, I., Nikolić, N.S., Pavlović, V.,& Lačnjevac, Č.. (2011). Impact of mineral composition on the distribution of natural radionuclides in rigosol-anthrosol. in Sensors and Transducers, 125(2), 115-130.
https://hdl.handle.net/21.15107/rcub_agrospace_2420

Tomić Z, Djordjević A, Rajković M, Vukašinović I, Nikolić N, Pavlović V, Lačnjevac Č. Impact of mineral composition on the distribution of natural radionuclides in rigosol-anthrosol. in Sensors and Transducers. 2011;125(2):115-130.
https://hdl.handle.net/21.15107/rcub_agrospace_2420 .

Tomić, Zorica, Djordjević, A.R., Rajković, Miloš, Vukašinović, Ivana, Nikolić, N.S., Pavlović, Vladimir, Lačnjevac, Časlav, "Impact of mineral composition on the distribution of natural radionuclides in rigosol-anthrosol" in Sensors and Transducers, 125, no. 2 (2011):115-130,
https://hdl.handle.net/21.15107/rcub_agrospace_2420 .