TY  - JOUR
AU  - Dragović, Snežana D.
AU  - Yamauchi, Masatoshi
AU  - Aoyama, Michio
AU  - Kajino, Mizuo
AU  - Petrović, Jelena M.
AU  - Ćujić, Mirjana
AU  - Dragović, Ranko M.
AU  - Đorđević, Milan
AU  - Bór, József
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9006
AB  - Radioactive materials released during the two most serious nuclear accidents in history, at Chernobyl and Fukushima, caused exceptionally significant contamination and perturbations of the environment. Among them, this paper focuses on the effects related to the atmospheric electricity (AE). Measurements of the most significant disturbances in the values of various AE parameters recorded near ground level are reviewed and the corresponding results are jointly evaluated. The Chernobyl and Fukushima events caused changes in the AE parameters both after long-distance transport (Chernobyl) and short-distance transport including re-suspension (Fukushima). The data indicates that the electrical conductivity of the air is more sensitive to the presence of airborne radioactivity than the atmospheric electric potential gradient (PG). PG, on the other hand, can be monitored more easily and its variation also reflects the vertical redistribution of radionuclides in the air due to their transport, deposition, and re-suspension from the ground. A brief overview of studies on atmospheric transport and deposition of radioactive clouds is given to facilitate the importance of considering the AE measurements in these subjects, and to incorporate those studies in interpreting the results of AE measurements. The AE measurements are particularly important in studying microphysical effects of enhanced radioactivity in the air where no other distance monitoring method exists, both for fair weather conditions wet conditions.
T2  - Science of the Total Environment
T1  - Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima
VL  - 733
SP  - 139271
DO  - 10.1016/j.scitotenv.2020.139271
ER  - 

@article{
author = "Dragović, Snežana D. and Yamauchi, Masatoshi and Aoyama, Michio and Kajino, Mizuo and Petrović, Jelena M. and Ćujić, Mirjana and Dragović, Ranko M. and Đorđević, Milan and Bór, József",
year = "2020",
abstract = "Radioactive materials released during the two most serious nuclear accidents in history, at Chernobyl and Fukushima, caused exceptionally significant contamination and perturbations of the environment. Among them, this paper focuses on the effects related to the atmospheric electricity (AE). Measurements of the most significant disturbances in the values of various AE parameters recorded near ground level are reviewed and the corresponding results are jointly evaluated. The Chernobyl and Fukushima events caused changes in the AE parameters both after long-distance transport (Chernobyl) and short-distance transport including re-suspension (Fukushima). The data indicates that the electrical conductivity of the air is more sensitive to the presence of airborne radioactivity than the atmospheric electric potential gradient (PG). PG, on the other hand, can be monitored more easily and its variation also reflects the vertical redistribution of radionuclides in the air due to their transport, deposition, and re-suspension from the ground. A brief overview of studies on atmospheric transport and deposition of radioactive clouds is given to facilitate the importance of considering the AE measurements in these subjects, and to incorporate those studies in interpreting the results of AE measurements. The AE measurements are particularly important in studying microphysical effects of enhanced radioactivity in the air where no other distance monitoring method exists, both for fair weather conditions wet conditions.",
journal = "Science of the Total Environment",
title = "Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima",
volume = "733",
pages = "139271",
doi = "10.1016/j.scitotenv.2020.139271"
}

Dragović, S. D., Yamauchi, M., Aoyama, M., Kajino, M., Petrović, J. M., Ćujić, M., Dragović, R. M., Đorđević, M.,& Bór, J.. (2020). Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima. in Science of the Total Environment, 733, 139271.
https://doi.org/10.1016/j.scitotenv.2020.139271

Dragović SD, Yamauchi M, Aoyama M, Kajino M, Petrović JM, Ćujić M, Dragović RM, Đorđević M, Bór J. Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima. in Science of the Total Environment. 2020;733:139271.
doi:10.1016/j.scitotenv.2020.139271 .

Dragović, Snežana D., Yamauchi, Masatoshi, Aoyama, Michio, Kajino, Mizuo, Petrović, Jelena M., Ćujić, Mirjana, Dragović, Ranko M., Đorđević, Milan, Bór, József, "Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima" in Science of the Total Environment, 733 (2020):139271,
https://doi.org/10.1016/j.scitotenv.2020.139271 . .

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Luković, Jelena M.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
AU  - Maki, Ryosuke S. S.
AU  - Gubarevich, Anna
AU  - Matović, Branko
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9720
AB  - Boron-rich phases like boron carbide and boron suboxide (nominally B6O), with high hardness, low density and chemical inertness, are used as an excellent thermal conducting material, as abrasives and for other high-wear applications. In addition, their application as a nuclear material is especially significant. This study presents a synthetic method for preparation of B6O at temperatures between 1200° and 1800°C. The synthesis was done in an argon atmosphere by using amorphous boron and boric acid in appropriate molar ratio. The evolution of the phase composition during thermal treatment was investigated by X-ray diffraction. A sample obtained at 1800°C consisted of B6O and B4C phases, revealing the intense reaction of B6O with carbon substrate in a vacuum. Sintering behaviour of the synthesized boron suboxide was followed with a scanning electron microscope
T2  - Materials Today: Proceedings
T1  - High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials
VL  - 16
SP  - 95
EP  - 101
DO  - 10.1016/j.matpr.2019.05.281
ER  - 

@article{
author = "Maletaškić, Jelena and Luković, Jelena M. and Yoshida, Katsumi and Yano, Toyohiko and Maki, Ryosuke S. S. and Gubarevich, Anna and Matović, Branko",
year = "2019",
abstract = "Boron-rich phases like boron carbide and boron suboxide (nominally B6O), with high hardness, low density and chemical inertness, are used as an excellent thermal conducting material, as abrasives and for other high-wear applications. In addition, their application as a nuclear material is especially significant. This study presents a synthetic method for preparation of B6O at temperatures between 1200° and 1800°C. The synthesis was done in an argon atmosphere by using amorphous boron and boric acid in appropriate molar ratio. The evolution of the phase composition during thermal treatment was investigated by X-ray diffraction. A sample obtained at 1800°C consisted of B6O and B4C phases, revealing the intense reaction of B6O with carbon substrate in a vacuum. Sintering behaviour of the synthesized boron suboxide was followed with a scanning electron microscope",
journal = "Materials Today: Proceedings",
title = "High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials",
volume = "16",
pages = "95-101",
doi = "10.1016/j.matpr.2019.05.281"
}

Maletaškić, J., Luković, J. M., Yoshida, K., Yano, T., Maki, R. S. S., Gubarevich, A.,& Matović, B.. (2019). High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials. in Materials Today: Proceedings, 16, 95-101.
https://doi.org/10.1016/j.matpr.2019.05.281

Maletaškić J, Luković JM, Yoshida K, Yano T, Maki RSS, Gubarevich A, Matović B. High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials. in Materials Today: Proceedings. 2019;16:95-101.
doi:10.1016/j.matpr.2019.05.281 .

Maletaškić, Jelena, Luković, Jelena M., Yoshida, Katsumi, Yano, Toyohiko, Maki, Ryosuke S. S., Gubarevich, Anna, Matović, Branko, "High-temperature synthesis and characterization of boron suboxide (B6O) and boron containing hard materials" in Materials Today: Proceedings, 16 (2019):95-101,
https://doi.org/10.1016/j.matpr.2019.05.281 . .