TY  - CONF
AU  - Bubanja, Itana Nuša
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Stanisavljev, Dragomir
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Bajuk-Bogdanović, Danica
AU  - Gizdavić-Nikolaidis, Marija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4955
AB  - Microwave assisted synthesis of polyaniline modified by pullulan (PANI/Pull) composite was
performed by aniline oxidation with potassium iodate. The PANI/Pull composite was characterized
using ATR-FTIR technique. FTIR spectra confirm presence of both components in PANI/Pull
composite. Antimicrobial evaluation of PANI/Pull material performed by using a qualitative disk
diffusion method on Candida albicans (C. albicans) culture showed very high sensitivity to
PANI/Pull composite. Observed FTIR and antifungal activity represent a promising results especially
for potential biomedical applications of PANI/Pull composite.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite
VL  - 2
SP  - 445
EP  - 448
UR  - https://hdl.handle.net/21.15107/rcub_cer_4955
ER  - 

@conference{
author = "Bubanja, Itana Nuša and Lončarević, Branka and Lješević, Marija and Stanisavljev, Dragomir and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Bajuk-Bogdanović, Danica and Gizdavić-Nikolaidis, Marija",
year = "2021",
abstract = "Microwave assisted synthesis of polyaniline modified by pullulan (PANI/Pull) composite was
performed by aniline oxidation with potassium iodate. The PANI/Pull composite was characterized
using ATR-FTIR technique. FTIR spectra confirm presence of both components in PANI/Pull
composite. Antimicrobial evaluation of PANI/Pull material performed by using a qualitative disk
diffusion method on Candida albicans (C. albicans) culture showed very high sensitivity to
PANI/Pull composite. Observed FTIR and antifungal activity represent a promising results especially
for potential biomedical applications of PANI/Pull composite.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite",
volume = "2",
pages = "445-448",
url = "https://hdl.handle.net/21.15107/rcub_cer_4955"
}

Bubanja, I. N., Lončarević, B., Lješević, M., Stanisavljev, D., Beškoski, V., Gojgić-Cvijović, G., Bajuk-Bogdanović, D.,& Gizdavić-Nikolaidis, M.. (2021). Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite. in Proceedings - Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., 2, 445-448.
https://hdl.handle.net/21.15107/rcub_cer_4955

Bubanja IN, Lončarević B, Lješević M, Stanisavljev D, Beškoski V, Gojgić-Cvijović G, Bajuk-Bogdanović D, Gizdavić-Nikolaidis M. Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite. in Proceedings - Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2021;2:445-448.
https://hdl.handle.net/21.15107/rcub_cer_4955 .

Bubanja, Itana Nuša, Lončarević, Branka, Lješević, Marija, Stanisavljev, Dragomir, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Bajuk-Bogdanović, Danica, Gizdavić-Nikolaidis, Marija, "Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite" in Proceedings - Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2 (2021):445-448,
https://hdl.handle.net/21.15107/rcub_cer_4955 .

TY  - CONF
AU  - Bubanja, Itana Nuša
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Stanisavljev, Dragomir
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Bajuk-Bogdanović, Danica
AU  - Gizdavić-Nikolaidis, Marija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4956
AB  - Poster presented at Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite
UR  - https://hdl.handle.net/21.15107/rcub_cer_4956
ER  - 

@conference{
author = "Bubanja, Itana Nuša and Lončarević, Branka and Lješević, Marija and Stanisavljev, Dragomir and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Bajuk-Bogdanović, Danica and Gizdavić-Nikolaidis, Marija",
year = "2021",
abstract = "Poster presented at Physical Chemistry 2021, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite",
url = "https://hdl.handle.net/21.15107/rcub_cer_4956"
}

Bubanja, I. N., Lončarević, B., Lješević, M., Stanisavljev, D., Beškoski, V., Gojgić-Cvijović, G., Bajuk-Bogdanović, D.,& Gizdavić-Nikolaidis, M.. (2021). Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite. .
https://hdl.handle.net/21.15107/rcub_cer_4956

Bubanja IN, Lončarević B, Lješević M, Stanisavljev D, Beškoski V, Gojgić-Cvijović G, Bajuk-Bogdanović D, Gizdavić-Nikolaidis M. Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_4956 .

Bubanja, Itana Nuša, Lončarević, Branka, Lješević, Marija, Stanisavljev, Dragomir, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Bajuk-Bogdanović, Danica, Gizdavić-Nikolaidis, Marija, "Microwave assisted synthesis of polyaniline/pullulan (pani/pull) composite" (2021),
https://hdl.handle.net/21.15107/rcub_cer_4956 .

TY  - CONF
AU  - Cvetanović Zobenica, Katarina
AU  - Tadić, Nenad
AU  - Lačnjevac, Uroš
AU  - Milinković, Evgenija
AU  - Rašljić Rafajilović, Milena
AU  - Smiljanić, Milče M.
AU  - Vasiljević-Radović, Dana
AU  - Stanisavljev, Dragomir
PY  - 2020
UR  - https://www.etran.rs/2020/IcETRAN/About_Conference/
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4001
AB  - Dye Sensitized Solar cells (DSSC) are very attractive due to their low cost fabricating methods and used materials. One of the most important parts of the cells is the photoanode. Many semiconducting materials are used for this purpose, but most common one is titanium dioxide (TiO2). Optimal sintering temperature of anode plays important role in performance of TiO2 layer in DSSC, since it provides good electrical contact between particles, which consequently leads to better electron transfer through the cell, but still restricts unfavorable phase transformation. In this paper two identical cells with natural pigment hypericin as sensitizer were assembled with anodes sintered on two different temperatures (500 °C and 600 °C), so their performance parameters could be compared. The ratios between the maximal power densities (Pmax) and solar to electrical energy conversion efficiencies (η) for the two measured cells are 5 times in favor for the cell sintered at 600 °C, which shows the importance of temperature treatment of TiO2 electrodes for better performance of solar cells.
PB  - Belgrade : ETRAN Society
C3  - Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020
T1  - Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin
UR  - https://hdl.handle.net/21.15107/rcub_cer_4001
ER  - 

@conference{
author = "Cvetanović Zobenica, Katarina and Tadić, Nenad and Lačnjevac, Uroš and Milinković, Evgenija and Rašljić Rafajilović, Milena and Smiljanić, Milče M. and Vasiljević-Radović, Dana and Stanisavljev, Dragomir",
year = "2020",
abstract = "Dye Sensitized Solar cells (DSSC) are very attractive due to their low cost fabricating methods and used materials. One of the most important parts of the cells is the photoanode. Many semiconducting materials are used for this purpose, but most common one is titanium dioxide (TiO2). Optimal sintering temperature of anode plays important role in performance of TiO2 layer in DSSC, since it provides good electrical contact between particles, which consequently leads to better electron transfer through the cell, but still restricts unfavorable phase transformation. In this paper two identical cells with natural pigment hypericin as sensitizer were assembled with anodes sintered on two different temperatures (500 °C and 600 °C), so their performance parameters could be compared. The ratios between the maximal power densities (Pmax) and solar to electrical energy conversion efficiencies (η) for the two measured cells are 5 times in favor for the cell sintered at 600 °C, which shows the importance of temperature treatment of TiO2 electrodes for better performance of solar cells.",
publisher = "Belgrade : ETRAN Society",
journal = "Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020",
title = "Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin",
url = "https://hdl.handle.net/21.15107/rcub_cer_4001"
}

Cvetanović Zobenica, K., Tadić, N., Lačnjevac, U., Milinković, E., Rašljić Rafajilović, M., Smiljanić, M. M., Vasiljević-Radović, D.,& Stanisavljev, D.. (2020). Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin. in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_cer_4001

Cvetanović Zobenica K, Tadić N, Lačnjevac U, Milinković E, Rašljić Rafajilović M, Smiljanić MM, Vasiljević-Radović D, Stanisavljev D. Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin. in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_4001 .

Cvetanović Zobenica, Katarina, Tadić, Nenad, Lačnjevac, Uroš, Milinković, Evgenija, Rašljić Rafajilović, Milena, Smiljanić, Milče M., Vasiljević-Radović, Dana, Stanisavljev, Dragomir, "Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin" in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020 (2020),
https://hdl.handle.net/21.15107/rcub_cer_4001 .

TY  - JOUR
AU  - Rašljić Rafajilović, Milena
AU  - Radulović, Katarina
AU  - Smiljanić, Milče M.
AU  - Lazić, Žarko
AU  - Jakšić, Zoran
AU  - Stanisavljev, Dragomir
AU  - Vasiljević-Radović, Dana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4009
AB  - We present the design, simulation, fabrication and characterization of monolithically
integrated high resistivity p-type boron-di used silicon two-zone heaters in a model high temperature
microreactor intended for nanoparticle fabrication. We used a finite element method for simulations
of the heaters’ operation and performance. Our experimental model reactor structure consisted of
a silicon wafer anodically bonded to a Pyrex glass wafer with an isotropically etched serpentine
microchannels network. We fabricated two separate spiral heaters with di erent temperatures,
mutually thermally isolated by barrier apertures etched throughout the silicon wafer. The heaters
were characterized by electric measurements and by infrared thermal vision. The obtained results
show that our proposed procedure for the heater fabrication is robust, stable and controllable, with a
decreased sensitivity to random variations of fabrication process parameters. Compared to metallic or
polysilicon heaters typically integrated into microreactors, our approach o ers improved control over
heater characteristics through adjustment of the Boron doping level and profile. Our microreactor is
intended to produce titanium dioxide nanoparticles, but it could be also used to fabricate nanoparticles
in di erent materials as well, with various parameters and geometries. Our method can be generally
applied to other high-temperature microsystems.
PB  - MDPI
T2  - Micromachines
T1  - Monolithically Integrated Diffused Silicon Two-Zone Heaters for Silicon-Pyrex Glass Microreactors for Production of Nanoparticles: Heat Exchange Aspects.
VL  - 11
IS  - 9
SP  - 818
DO  - 10.3390/mi11090818
ER  - 

@article{
author = "Rašljić Rafajilović, Milena and Radulović, Katarina and Smiljanić, Milče M. and Lazić, Žarko and Jakšić, Zoran and Stanisavljev, Dragomir and Vasiljević-Radović, Dana",
year = "2020",
abstract = "We present the design, simulation, fabrication and characterization of monolithically
integrated high resistivity p-type boron-di used silicon two-zone heaters in a model high temperature
microreactor intended for nanoparticle fabrication. We used a finite element method for simulations
of the heaters’ operation and performance. Our experimental model reactor structure consisted of
a silicon wafer anodically bonded to a Pyrex glass wafer with an isotropically etched serpentine
microchannels network. We fabricated two separate spiral heaters with di erent temperatures,
mutually thermally isolated by barrier apertures etched throughout the silicon wafer. The heaters
were characterized by electric measurements and by infrared thermal vision. The obtained results
show that our proposed procedure for the heater fabrication is robust, stable and controllable, with a
decreased sensitivity to random variations of fabrication process parameters. Compared to metallic or
polysilicon heaters typically integrated into microreactors, our approach o ers improved control over
heater characteristics through adjustment of the Boron doping level and profile. Our microreactor is
intended to produce titanium dioxide nanoparticles, but it could be also used to fabricate nanoparticles
in di erent materials as well, with various parameters and geometries. Our method can be generally
applied to other high-temperature microsystems.",
publisher = "MDPI",
journal = "Micromachines",
title = "Monolithically Integrated Diffused Silicon Two-Zone Heaters for Silicon-Pyrex Glass Microreactors for Production of Nanoparticles: Heat Exchange Aspects.",
volume = "11",
number = "9",
pages = "818",
doi = "10.3390/mi11090818"
}

Rašljić Rafajilović, M., Radulović, K., Smiljanić, M. M., Lazić, Ž., Jakšić, Z., Stanisavljev, D.,& Vasiljević-Radović, D.. (2020). Monolithically Integrated Diffused Silicon Two-Zone Heaters for Silicon-Pyrex Glass Microreactors for Production of Nanoparticles: Heat Exchange Aspects.. in Micromachines
MDPI., 11(9), 818.
https://doi.org/10.3390/mi11090818

Rašljić Rafajilović M, Radulović K, Smiljanić MM, Lazić Ž, Jakšić Z, Stanisavljev D, Vasiljević-Radović D. Monolithically Integrated Diffused Silicon Two-Zone Heaters for Silicon-Pyrex Glass Microreactors for Production of Nanoparticles: Heat Exchange Aspects.. in Micromachines. 2020;11(9):818.
doi:10.3390/mi11090818 .

Rašljić Rafajilović, Milena, Radulović, Katarina, Smiljanić, Milče M., Lazić, Žarko, Jakšić, Zoran, Stanisavljev, Dragomir, Vasiljević-Radović, Dana, "Monolithically Integrated Diffused Silicon Two-Zone Heaters for Silicon-Pyrex Glass Microreactors for Production of Nanoparticles: Heat Exchange Aspects." in Micromachines, 11, no. 9 (2020):818,
https://doi.org/10.3390/mi11090818 . .

TY  - JOUR
AU  - Bubanja, Itana Nuša
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3059
AB  - The influence of four low-frequency magnetic field (MF) ranges 10–300 Hz, 10–100 Hz, 10–50 Hz and 50–100 Hz in scanning regime (all frequencies from selected range were scanned during 100 s repetitively during 24 h) on baker's yeast cells Saccharomyces cerevisiae was examined by continuous measurements of cumulative O2 consumption and cumulative CO2 production over 24 h with Micro-Oxymax® respirometer. Besides respiration activity, measurements of cell growth and glucose uptake were performed as well. Statistical analysis indicated that, among all investigated low-frequency MF ranges, range from 10 Hz to 50 Hz had the greatest influence to yeast cell respiration and cell growth. More precisely, for this region, paired two sample one-tail t-test showed statistically significant differences in cumulative O2 consumption, cumulative CO2 production and S. cerevisiae cell number. Moreover samples exposed to MF range from 10 Hz to 50 Hz showed the same behavior in all five replicates: lower cumulative O2 consumption, higher cumulative CO2 production and higher cell number compared to control sample. This could be important from the application aspect, in industry (food, feed, brewery etc.) and biotechnology, because changes in cells metabolism are not caused by chemical treatment.
PB  - Elsevier
T2  - Chemical Engineering & Processing: Process Intensification
T1  - The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth
VL  - 143
SP  - 107593
DO  - 10.1016/j.cep.2019.107593
ER  - 

@article{
author = "Bubanja, Itana Nuša and Lončarević, Branka and Lješević, Marija and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2019",
abstract = "The influence of four low-frequency magnetic field (MF) ranges 10–300 Hz, 10–100 Hz, 10–50 Hz and 50–100 Hz in scanning regime (all frequencies from selected range were scanned during 100 s repetitively during 24 h) on baker's yeast cells Saccharomyces cerevisiae was examined by continuous measurements of cumulative O2 consumption and cumulative CO2 production over 24 h with Micro-Oxymax® respirometer. Besides respiration activity, measurements of cell growth and glucose uptake were performed as well. Statistical analysis indicated that, among all investigated low-frequency MF ranges, range from 10 Hz to 50 Hz had the greatest influence to yeast cell respiration and cell growth. More precisely, for this region, paired two sample one-tail t-test showed statistically significant differences in cumulative O2 consumption, cumulative CO2 production and S. cerevisiae cell number. Moreover samples exposed to MF range from 10 Hz to 50 Hz showed the same behavior in all five replicates: lower cumulative O2 consumption, higher cumulative CO2 production and higher cell number compared to control sample. This could be important from the application aspect, in industry (food, feed, brewery etc.) and biotechnology, because changes in cells metabolism are not caused by chemical treatment.",
publisher = "Elsevier",
journal = "Chemical Engineering & Processing: Process Intensification",
title = "The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth",
volume = "143",
pages = "107593",
doi = "10.1016/j.cep.2019.107593"
}

Bubanja, I. N., Lončarević, B., Lješević, M., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2019). The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth. in Chemical Engineering & Processing: Process Intensification
Elsevier., 143, 107593.
https://doi.org/10.1016/j.cep.2019.107593

Bubanja IN, Lončarević B, Lješević M, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth. in Chemical Engineering & Processing: Process Intensification. 2019;143:107593.
doi:10.1016/j.cep.2019.107593 .

Bubanja, Itana Nuša, Lončarević, Branka, Lješević, Marija, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth" in Chemical Engineering & Processing: Process Intensification, 143 (2019):107593,
https://doi.org/10.1016/j.cep.2019.107593 . .

TY  - JOUR
AU  - Bubanja, Itana Nuša
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3153
AB  - The influence of four low-frequency magnetic field (MF) ranges 10–300 Hz, 10–100 Hz, 10–50 Hz and 50–100 Hz in scanning regime (all frequencies from selected range were scanned during 100 s repetitively during 24 h) on baker's yeast cells Saccharomyces cerevisiae was examined by continuous measurements of cumulative O2 consumption and cumulative CO2 production over 24 h with Micro-Oxymax® respirometer. Besides respiration activity, measurements of cell growth and glucose uptake were performed as well. Statistical analysis indicated that, among all investigated low-frequency MF ranges, range from 10 Hz to 50 Hz had the greatest influence to yeast cell respiration and cell growth. More precisely, for this region, paired two sample one-tail t-test showed statistically significant differences in cumulative O2 consumption, cumulative CO2 production and S. cerevisiae cell number. Moreover samples exposed to MF range from 10 Hz to 50 Hz showed the same behavior in all five replicates: lower cumulative O2 consumption, higher cumulative CO2 production and higher cell number compared to control sample. This could be important from the application aspect, in industry (food, feed, brewery etc.) and biotechnology, because changes in cells metabolism are not caused by chemical treatment.
PB  - Elsevier
T2  - Chemical Engineering & Processing: Process Intensification
T1  - The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth
VL  - 143
SP  - 107593
DO  - 10.1016/j.cep.2019.107593
ER  - 

@article{
author = "Bubanja, Itana Nuša and Lončarević, Branka and Lješević, Marija and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2019",
abstract = "The influence of four low-frequency magnetic field (MF) ranges 10–300 Hz, 10–100 Hz, 10–50 Hz and 50–100 Hz in scanning regime (all frequencies from selected range were scanned during 100 s repetitively during 24 h) on baker's yeast cells Saccharomyces cerevisiae was examined by continuous measurements of cumulative O2 consumption and cumulative CO2 production over 24 h with Micro-Oxymax® respirometer. Besides respiration activity, measurements of cell growth and glucose uptake were performed as well. Statistical analysis indicated that, among all investigated low-frequency MF ranges, range from 10 Hz to 50 Hz had the greatest influence to yeast cell respiration and cell growth. More precisely, for this region, paired two sample one-tail t-test showed statistically significant differences in cumulative O2 consumption, cumulative CO2 production and S. cerevisiae cell number. Moreover samples exposed to MF range from 10 Hz to 50 Hz showed the same behavior in all five replicates: lower cumulative O2 consumption, higher cumulative CO2 production and higher cell number compared to control sample. This could be important from the application aspect, in industry (food, feed, brewery etc.) and biotechnology, because changes in cells metabolism are not caused by chemical treatment.",
publisher = "Elsevier",
journal = "Chemical Engineering & Processing: Process Intensification",
title = "The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth",
volume = "143",
pages = "107593",
doi = "10.1016/j.cep.2019.107593"
}

Bubanja, I. N., Lončarević, B., Lješević, M., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2019). The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth. in Chemical Engineering & Processing: Process Intensification
Elsevier., 143, 107593.
https://doi.org/10.1016/j.cep.2019.107593

Bubanja IN, Lončarević B, Lješević M, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth. in Chemical Engineering & Processing: Process Intensification. 2019;143:107593.
doi:10.1016/j.cep.2019.107593 .

Bubanja, Itana Nuša, Lončarević, Branka, Lješević, Marija, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "The influence of low-frequency magnetic field regions on the Saccharomyces cerevisiae respiration and growth" in Chemical Engineering & Processing: Process Intensification, 143 (2019):107593,
https://doi.org/10.1016/j.cep.2019.107593 . .

TY  - JOUR
AU  - Cvetanović Zobenica, Katarina
AU  - Lačnjevac, Uroš
AU  - Etinski, Mihajlo
AU  - Vasiljević-Radović, Dana
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3213
AB  - Rising demands for renewable energy sources have led to the development of dye sensitized solar cells. It
is a challenge to find a good and low cost sensitizer, which has a low environmental impact. In this work,
we conducted spectroscopic and electrochemical experiments, as well as quantum-chemical calculations of the natural pigment hypericin, in order to provide insight into its sensitizing efficiency. To this
end, three identical cells were made and characterized. Although this pigment exhibited good adsorption
onto a semiconductor surface, a high molar absorption coefficient (43 700 L mol−1 cm−1
) and favorable
alignment of energy levels and provided a long lifetime of electrons (17.8 ms) in the TiO2 photoanode, it
was found that the efficiency of hypericin-sensitized solar cells was very low, only 0.0245%. We suggest
that this inefficiency originated from a low injection of electrons into the conduction band of TiO2.
This conclusion is supported by the density functional theory calculations which revealed a low electron
density in the anchoring groups of electronically excited hypericin. The results of this work could be valuable not only in the photovoltaic aspect, but also for application of hypericin in medicine in photodynamic
therapy
PB  - Royal Society of Chemistry
T2  - Photochemical & Photobiological Sciences
T1  - Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs
VL  - 18
IS  - 8
SP  - 2023
EP  - 2030
DO  - 10.1039/c9pp00118b
ER  - 

@article{
author = "Cvetanović Zobenica, Katarina and Lačnjevac, Uroš and Etinski, Mihajlo and Vasiljević-Radović, Dana and Stanisavljev, Dragomir",
year = "2019",
abstract = "Rising demands for renewable energy sources have led to the development of dye sensitized solar cells. It
is a challenge to find a good and low cost sensitizer, which has a low environmental impact. In this work,
we conducted spectroscopic and electrochemical experiments, as well as quantum-chemical calculations of the natural pigment hypericin, in order to provide insight into its sensitizing efficiency. To this
end, three identical cells were made and characterized. Although this pigment exhibited good adsorption
onto a semiconductor surface, a high molar absorption coefficient (43 700 L mol−1 cm−1
) and favorable
alignment of energy levels and provided a long lifetime of electrons (17.8 ms) in the TiO2 photoanode, it
was found that the efficiency of hypericin-sensitized solar cells was very low, only 0.0245%. We suggest
that this inefficiency originated from a low injection of electrons into the conduction band of TiO2.
This conclusion is supported by the density functional theory calculations which revealed a low electron
density in the anchoring groups of electronically excited hypericin. The results of this work could be valuable not only in the photovoltaic aspect, but also for application of hypericin in medicine in photodynamic
therapy",
publisher = "Royal Society of Chemistry",
journal = "Photochemical & Photobiological Sciences",
title = "Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs",
volume = "18",
number = "8",
pages = "2023-2030",
doi = "10.1039/c9pp00118b"
}

Cvetanović Zobenica, K., Lačnjevac, U., Etinski, M., Vasiljević-Radović, D.,& Stanisavljev, D.. (2019). Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs. in Photochemical & Photobiological Sciences
Royal Society of Chemistry., 18(8), 2023-2030.
https://doi.org/10.1039/c9pp00118b

Cvetanović Zobenica K, Lačnjevac U, Etinski M, Vasiljević-Radović D, Stanisavljev D. Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs. in Photochemical & Photobiological Sciences. 2019;18(8):2023-2030.
doi:10.1039/c9pp00118b .

Cvetanović Zobenica, Katarina, Lačnjevac, Uroš, Etinski, Mihajlo, Vasiljević-Radović, Dana, Stanisavljev, Dragomir, "Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs" in Photochemical & Photobiological Sciences, 18, no. 8 (2019):2023-2030,
https://doi.org/10.1039/c9pp00118b . .

TY  - CONF
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Bubanja, Itana Nuša
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://www.shd.org.rs/index.php/abstracts-56
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3288
AB  - The analysis of the electric, magnetic and electromagnetic fields influence on microorganisms is a very popular research topic, since these fields could potentially act as stressors and affect the microbial metabolism and survival. The aim of this work was to investigate the influence of the low frequency magnetic field (MF) with scan regime from 10 Hz to 50 Hz on S. cerevisiae respiration. The experiment was performed in five replicates and monitored using the Micro-Oxymax® respirometer. All five experiments showed lower cumulative O2 consumption in MF exposed samples, compared to the control sample and inconsistent cumulative CO2 production. However, these differences in O2 consumption and CO2 production were statistically significant. Even though additional experiments are necessary, these results strongly suggest that this is a good basis for further investigation in this field.
AB  - Ispitivanje uticaja električnog, magnetnog i elektromagnetnog polja na mikroorganizme je veoma aktuelni predmet istrazivanja, jer ova fizička polja potencijalno deluju kao faktori stresa i tako utiču na mikrobni metabolizam i preživljavanje. U ovom radu ispitivan je uticaj niskofrekventnog magnetnog polja (MP) sa konstantnim intervalom skeniranja od 10 do 50 Hz na respiraciju ćelija kvasca, S. cerevisiae. Eksperiment je rađen u pet ponavljanja i praćen Micro-Oxymax® respirometrom. Kumulativna potrošnja kiseonika je bila manja kod ćelija izloženih MP u svih pet ponavljanja, dok je produkcija CO2 bila nekonzistentna. Međutim, ove razlike u potrošnji O2 i produkciji CO2 su statistički značajne. Iako su dodatna ispitivanja neophodna, dobijeni rezultati ovih inicijalnih eksperimenata predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.
PB  - Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd
C3  - 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova Niš 7-8.9. 2019.
T1  - Influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration
T1  - Uticaj niskofrekventnog magnetnog polja (10-50 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae
SP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_cer_3288
ER  - 

@conference{
author = "Lončarević, Branka and Lješević, Marija and Bubanja, Itana Nuša and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2019",
abstract = "The analysis of the electric, magnetic and electromagnetic fields influence on microorganisms is a very popular research topic, since these fields could potentially act as stressors and affect the microbial metabolism and survival. The aim of this work was to investigate the influence of the low frequency magnetic field (MF) with scan regime from 10 Hz to 50 Hz on S. cerevisiae respiration. The experiment was performed in five replicates and monitored using the Micro-Oxymax® respirometer. All five experiments showed lower cumulative O2 consumption in MF exposed samples, compared to the control sample and inconsistent cumulative CO2 production. However, these differences in O2 consumption and CO2 production were statistically significant. Even though additional experiments are necessary, these results strongly suggest that this is a good basis for further investigation in this field., Ispitivanje uticaja električnog, magnetnog i elektromagnetnog polja na mikroorganizme je veoma aktuelni predmet istrazivanja, jer ova fizička polja potencijalno deluju kao faktori stresa i tako utiču na mikrobni metabolizam i preživljavanje. U ovom radu ispitivan je uticaj niskofrekventnog magnetnog polja (MP) sa konstantnim intervalom skeniranja od 10 do 50 Hz na respiraciju ćelija kvasca, S. cerevisiae. Eksperiment je rađen u pet ponavljanja i praćen Micro-Oxymax® respirometrom. Kumulativna potrošnja kiseonika je bila manja kod ćelija izloženih MP u svih pet ponavljanja, dok je produkcija CO2 bila nekonzistentna. Međutim, ove razlike u potrošnji O2 i produkciji CO2 su statistički značajne. Iako su dodatna ispitivanja neophodna, dobijeni rezultati ovih inicijalnih eksperimenata predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.",
publisher = "Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd",
journal = "56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova Niš 7-8.9. 2019.",
title = "Influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration, Uticaj niskofrekventnog magnetnog polja (10-50 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae",
pages = "8",
url = "https://hdl.handle.net/21.15107/rcub_cer_3288"
}

Lončarević, B., Lješević, M., Bubanja, I. N., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2019). Influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration. in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova Niš 7-8.9. 2019.
Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd., 8.
https://hdl.handle.net/21.15107/rcub_cer_3288

Lončarević B, Lješević M, Bubanja IN, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. Influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration. in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova Niš 7-8.9. 2019.. 2019;:8.
https://hdl.handle.net/21.15107/rcub_cer_3288 .

Lončarević, Branka, Lješević, Marija, Bubanja, Itana Nuša, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "Influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration" in 56th Meeting of the Serbian chemical Society - Book of Abstracts / 56. Savetovanje Srpskog hemijskog društva - Kratki izvodi radova Niš 7-8.9. 2019. (2019):8,
https://hdl.handle.net/21.15107/rcub_cer_3288 .

TY  - CONF
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Bubanja, Itana Nuša
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://www.shd.org.rs/index.php/proceedings-56
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3289
AB  - The analysis of the electric, magnetic and electromagnetic fields influence on microorganisms is a very popular research topic, since these fields could potentially act as stressors and affect the microbial metabolism and survival. The aim of this work was to investigate the influence of the low frequency magnetic field (MF) with scan regime from 10 Hz to 50 Hz on S. cerevisiae respiration. The experiment was performed in five replicates and monitored using the Micro-Oxymax® respirometer. All five experiments showed lower cumulative O2 consumption in MF exposed samples, compared to the control sample and inconsistent cumulative CO2 production. However, these differences in O2 consumption and CO2 production were statistically significant. Even though additional experiments are necessary, these results strongly suggest that this is a good basis for further investigation in this field.
AB  - Ispitivanje uticaja električnog, magnetnog i elektromagnetnog polja na mikroorganizme je
veoma aktuelni predmet istrazivanja, jer ova fizička polja potencijalno deluju kao faktori
stresa i tako utiču na mikrobni metabolizam, ponašanje i preživljavanje. U ovom radu
ispitivan je uticaj niskofrekventnog magnetnog polja (MP) sa konstantnim intervalom
skeniranja od 10 do 50 Hz na respiraciju ćelija kvasca, S. cerevisiae. Eksperiment je rađen u
pet ponavljanja i praćen Micro-Oxymax® respirometrom. Kumulativna potrošnja kiseonika
je bila manja kod ćelija izloženih MP u svih pet ponavljanja, dok je produkcija CO2 bila
nekonzistentna. Međutim, ove razlike u potrošnji O2 i produkciji CO2 su statistički značajne.
Iako su dodatna ispitivanja neophodna, dobijeni rezultati ovih inicijalnih eksperimenata
predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.
PB  - Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd
C3  - 56th Meeting of the Serbian chemical Society - Proceedings / 56. Savetovanje Srpskog hemijskog društva - Knjiga radova Niš 7-8.9. 2019.
T1  - The influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration
T1  - Uticaj niskofrekventnog magnetnog polja (10-50 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae
SP  - 24
EP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_cer_3289
ER  - 

@conference{
author = "Lončarević, Branka and Lješević, Marija and Bubanja, Itana Nuša and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2019",
abstract = "The analysis of the electric, magnetic and electromagnetic fields influence on microorganisms is a very popular research topic, since these fields could potentially act as stressors and affect the microbial metabolism and survival. The aim of this work was to investigate the influence of the low frequency magnetic field (MF) with scan regime from 10 Hz to 50 Hz on S. cerevisiae respiration. The experiment was performed in five replicates and monitored using the Micro-Oxymax® respirometer. All five experiments showed lower cumulative O2 consumption in MF exposed samples, compared to the control sample and inconsistent cumulative CO2 production. However, these differences in O2 consumption and CO2 production were statistically significant. Even though additional experiments are necessary, these results strongly suggest that this is a good basis for further investigation in this field., Ispitivanje uticaja električnog, magnetnog i elektromagnetnog polja na mikroorganizme je
veoma aktuelni predmet istrazivanja, jer ova fizička polja potencijalno deluju kao faktori
stresa i tako utiču na mikrobni metabolizam, ponašanje i preživljavanje. U ovom radu
ispitivan je uticaj niskofrekventnog magnetnog polja (MP) sa konstantnim intervalom
skeniranja od 10 do 50 Hz na respiraciju ćelija kvasca, S. cerevisiae. Eksperiment je rađen u
pet ponavljanja i praćen Micro-Oxymax® respirometrom. Kumulativna potrošnja kiseonika
je bila manja kod ćelija izloženih MP u svih pet ponavljanja, dok je produkcija CO2 bila
nekonzistentna. Međutim, ove razlike u potrošnji O2 i produkciji CO2 su statistički značajne.
Iako su dodatna ispitivanja neophodna, dobijeni rezultati ovih inicijalnih eksperimenata
predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.",
publisher = "Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd",
journal = "56th Meeting of the Serbian chemical Society - Proceedings / 56. Savetovanje Srpskog hemijskog društva - Knjiga radova Niš 7-8.9. 2019.",
title = "The influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration, Uticaj niskofrekventnog magnetnog polja (10-50 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae",
pages = "24-29",
url = "https://hdl.handle.net/21.15107/rcub_cer_3289"
}

Lončarević, B., Lješević, M., Bubanja, I. N., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2019). The influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration. in 56th Meeting of the Serbian chemical Society - Proceedings / 56. Savetovanje Srpskog hemijskog društva - Knjiga radova Niš 7-8.9. 2019.
Serbian Chemical Society, Belgrade / Srpsko hemijsko društvo, Beograd., 24-29.
https://hdl.handle.net/21.15107/rcub_cer_3289

Lončarević B, Lješević M, Bubanja IN, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. The influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration. in 56th Meeting of the Serbian chemical Society - Proceedings / 56. Savetovanje Srpskog hemijskog društva - Knjiga radova Niš 7-8.9. 2019.. 2019;:24-29.
https://hdl.handle.net/21.15107/rcub_cer_3289 .

Lončarević, Branka, Lješević, Marija, Bubanja, Itana Nuša, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "The influence of the low frequency magnetic field with scan regime from 10 Hz to 50 Hz on Saccharomyces cerevisiae respiration" in 56th Meeting of the Serbian chemical Society - Proceedings / 56. Savetovanje Srpskog hemijskog društva - Knjiga radova Niš 7-8.9. 2019. (2019):24-29,
https://hdl.handle.net/21.15107/rcub_cer_3289 .

TY  - JOUR
AU  - Rašljić, Milena
AU  - Obradov, Marko
AU  - Lazić, Žarko
AU  - Vasiljević-Radović, Dana
AU  - Čupić, Željko
AU  - Stanisavljev, Dragomir
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2481
AB  - In this paper we joined plasmonics and microreactors for photocatalytic optofluidic devices. To this purpose we consider the use of subwavelength texturing of plasmonic films applied to microreactor channel bottom to ensure SPP localization and field enhancement. The small volume of the microchannel is ideal for the enhancement of photocatalytic processes using localized evanescent fields. A great advantage of our approach is that it is highly compatible with the standard chemical bulk micromachining techniques which are commonly used in fabrication of the microreactors i.e. standard photolithography can be used to define microchannels, and radiofrequent sputtering to deposit a gold film as a plasmonic material over the roughened surface. Subwavelength surface texturing can be obtained by varying etching techniques and parameters and the microreactor building materials. We show using ab initio FEM modeling that the stochastic surface profile ensures broadband coupling of visible light as well as enables us to merge plasmonic sensors and microreactors into a single device.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Metal layers with subwavelength texturing for broadband enhancement of photocatalytic processes in microreactors
VL  - 50
IS  - 6
SP  - 237
DO  - 10.1007/s11082-018-1507-z
ER  - 

@article{
author = "Rašljić, Milena and Obradov, Marko and Lazić, Žarko and Vasiljević-Radović, Dana and Čupić, Željko and Stanisavljev, Dragomir",
year = "2018",
abstract = "In this paper we joined plasmonics and microreactors for photocatalytic optofluidic devices. To this purpose we consider the use of subwavelength texturing of plasmonic films applied to microreactor channel bottom to ensure SPP localization and field enhancement. The small volume of the microchannel is ideal for the enhancement of photocatalytic processes using localized evanescent fields. A great advantage of our approach is that it is highly compatible with the standard chemical bulk micromachining techniques which are commonly used in fabrication of the microreactors i.e. standard photolithography can be used to define microchannels, and radiofrequent sputtering to deposit a gold film as a plasmonic material over the roughened surface. Subwavelength surface texturing can be obtained by varying etching techniques and parameters and the microreactor building materials. We show using ab initio FEM modeling that the stochastic surface profile ensures broadband coupling of visible light as well as enables us to merge plasmonic sensors and microreactors into a single device.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Metal layers with subwavelength texturing for broadband enhancement of photocatalytic processes in microreactors",
volume = "50",
number = "6",
pages = "237",
doi = "10.1007/s11082-018-1507-z"
}

Rašljić, M., Obradov, M., Lazić, Ž., Vasiljević-Radović, D., Čupić, Ž.,& Stanisavljev, D.. (2018). Metal layers with subwavelength texturing for broadband enhancement of photocatalytic processes in microreactors. in Optical and Quantum Electronics
Springer., 50(6), 237.
https://doi.org/10.1007/s11082-018-1507-z

Rašljić M, Obradov M, Lazić Ž, Vasiljević-Radović D, Čupić Ž, Stanisavljev D. Metal layers with subwavelength texturing for broadband enhancement of photocatalytic processes in microreactors. in Optical and Quantum Electronics. 2018;50(6):237.
doi:10.1007/s11082-018-1507-z .

Rašljić, Milena, Obradov, Marko, Lazić, Žarko, Vasiljević-Radović, Dana, Čupić, Željko, Stanisavljev, Dragomir, "Metal layers with subwavelength texturing for broadband enhancement of photocatalytic processes in microreactors" in Optical and Quantum Electronics, 50, no. 6 (2018):237,
https://doi.org/10.1007/s11082-018-1507-z . .

TY  - CONF
AU  - Lješević, Marija
AU  - Lončarević, Branka
AU  - Bubanja, Itana Nuša
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2018
UR  - https://www.shd.org.rs/index.php/abstracts2018-2/proceedings
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3979
AB  - The effects of electric, magnetic or electromagnetic fields on different microbes have
become a very popular topic nowadays, mostly because the fields could potentially affect
the survival of the microbial cells as well as their behavior and metabolism. In this paper the
influence of the magnetic field with constant low frequency scan regime from 10 to 1000
Hz on yeast cells S. cerevisiae respiration activity was examined using Micro-Oxymax®
respirometer. Experiments were performed in five replicates. All five experiments showed
lower cumulative O2 consumption in magnetic field exposed samples, compared to the
control sample and inconsistent cumulative CO2 production. The paired two sample onetail
T-test showed statistically significant differences between control and magnetic field
sample for cumulative O2 consumption, but not for the CO2 production. Even though
additional experiments are neccesary to clarify the differencies in CO2 production, these
preliminary findings strongly suggest that obtained results represent a good basis for
further investigations in this field.
AB  - Veoma popularna tema današnjice je ispitivanje električnog, magnetnog i elektromagnetnog polja na različite mikroorganizme, jer pomenuta fizička polja potencijalno deluju kao faktori stresa i tako utiču na njihovo preživljavanje, ponašanje i metabolizam. U ovom radu ispitivan je uticaj niskofrekventnog magnetnog polja sa konstantnim intervalom skeniranja od 10 do 1000 Hz na respiraciju ćelija kvasca, Saccharomyces cerevisiae. Eksperimenti su rađeni u pet ponavljanja i kumulativna potrošnja O2 i produkcija CO2 praćena je pomoću Micro-Oxymax® respirometra. U svih pet ponavljanja, ćelije koje su bile izložene magnetnom polju pokazale su manju kumulativnu potrošnju kiseonika u poređenju sa uzorcima van magnetnog polja i nekonzistentnu produkciju CO2. Rezultati su obrađeni uporednim jednosmernim T-testom, koji je pokazao da postoje statistički značajne razlike u kumulativnoj potrošnji O2 između kontrolnih ćelija i onih izloženih magnetnom polju, što nije slučaj sa kumulativnom produkcijom CO2. Iako su dodatna ispitivanja neophodna da se objasni nekonzistentnost produkcije CO2, dobijeni rezultati ovih inicijalnih eksperimenata predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.
PB  - Belgrade : Serbian Chemical Society
C3  - Proceedings - 55th Meeting of the Serbian Chemical Society
T1  - Influence of the low frequency 10-1000 Hz magnetic field on Saccharomyces cerevisiae respiration activity
T1  - Uticaj niskofrekventnog magnetnog polja (10-1000 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae
SP  - 31
EP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_cer_3979
ER  - 

@conference{
author = "Lješević, Marija and Lončarević, Branka and Bubanja, Itana Nuša and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2018",
abstract = "The effects of electric, magnetic or electromagnetic fields on different microbes have
become a very popular topic nowadays, mostly because the fields could potentially affect
the survival of the microbial cells as well as their behavior and metabolism. In this paper the
influence of the magnetic field with constant low frequency scan regime from 10 to 1000
Hz on yeast cells S. cerevisiae respiration activity was examined using Micro-Oxymax®
respirometer. Experiments were performed in five replicates. All five experiments showed
lower cumulative O2 consumption in magnetic field exposed samples, compared to the
control sample and inconsistent cumulative CO2 production. The paired two sample onetail
T-test showed statistically significant differences between control and magnetic field
sample for cumulative O2 consumption, but not for the CO2 production. Even though
additional experiments are neccesary to clarify the differencies in CO2 production, these
preliminary findings strongly suggest that obtained results represent a good basis for
further investigations in this field., Veoma popularna tema današnjice je ispitivanje električnog, magnetnog i elektromagnetnog polja na različite mikroorganizme, jer pomenuta fizička polja potencijalno deluju kao faktori stresa i tako utiču na njihovo preživljavanje, ponašanje i metabolizam. U ovom radu ispitivan je uticaj niskofrekventnog magnetnog polja sa konstantnim intervalom skeniranja od 10 do 1000 Hz na respiraciju ćelija kvasca, Saccharomyces cerevisiae. Eksperimenti su rađeni u pet ponavljanja i kumulativna potrošnja O2 i produkcija CO2 praćena je pomoću Micro-Oxymax® respirometra. U svih pet ponavljanja, ćelije koje su bile izložene magnetnom polju pokazale su manju kumulativnu potrošnju kiseonika u poređenju sa uzorcima van magnetnog polja i nekonzistentnu produkciju CO2. Rezultati su obrađeni uporednim jednosmernim T-testom, koji je pokazao da postoje statistički značajne razlike u kumulativnoj potrošnji O2 između kontrolnih ćelija i onih izloženih magnetnom polju, što nije slučaj sa kumulativnom produkcijom CO2. Iako su dodatna ispitivanja neophodna da se objasni nekonzistentnost produkcije CO2, dobijeni rezultati ovih inicijalnih eksperimenata predstavljaju dobru osnovu za dalja istraživanja u ovoj oblasti.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Proceedings - 55th Meeting of the Serbian Chemical Society",
title = "Influence of the low frequency 10-1000 Hz magnetic field on Saccharomyces cerevisiae respiration activity, Uticaj niskofrekventnog magnetnog polja (10-1000 Hz) na respiracionu aktivnost ćelija kvasca Saccharomyces cerevisiae",
pages = "31-35",
url = "https://hdl.handle.net/21.15107/rcub_cer_3979"
}

Lješević, M., Lončarević, B., Bubanja, I. N., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2018). Influence of the low frequency 10-1000 Hz magnetic field on Saccharomyces cerevisiae respiration activity. in Proceedings - 55th Meeting of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 31-35.
https://hdl.handle.net/21.15107/rcub_cer_3979

Lješević M, Lončarević B, Bubanja IN, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. Influence of the low frequency 10-1000 Hz magnetic field on Saccharomyces cerevisiae respiration activity. in Proceedings - 55th Meeting of the Serbian Chemical Society. 2018;:31-35.
https://hdl.handle.net/21.15107/rcub_cer_3979 .

Lješević, Marija, Lončarević, Branka, Bubanja, Itana Nuša, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "Influence of the low frequency 10-1000 Hz magnetic field on Saccharomyces cerevisiae respiration activity" in Proceedings - 55th Meeting of the Serbian Chemical Society (2018):31-35,
https://hdl.handle.net/21.15107/rcub_cer_3979 .

TY  - CONF
AU  - Bubanja, Itana Nuša
AU  - Lončarević, Branka
AU  - Lješević, Marija
AU  - Beškoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Velikić, Zoran
AU  - Stanisavljev, Dragomir
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3982
AB  - In this paper influence of the low frequency magnetic field on Saccharomyces cerevisiae respiration was examined. Influence of four low frequency magnetic field ranges was examined: 10-200 Hz, 200-300 Hz, 300-650 Hz and 650-1000 Hz. All analyzed frequency ranges gave the same influence on the yeast cells respiration.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Proceedings - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Influence of low frequency ranges of magnetic field on Saccharomyces cerevisiae respiration
VL  - 1
SP  - 499
EP  - 502
UR  - https://hdl.handle.net/21.15107/rcub_cer_3982
ER  - 

@conference{
author = "Bubanja, Itana Nuša and Lončarević, Branka and Lješević, Marija and Beškoski, Vladimir and Gojgić-Cvijović, Gordana and Velikić, Zoran and Stanisavljev, Dragomir",
year = "2018",
abstract = "In this paper influence of the low frequency magnetic field on Saccharomyces cerevisiae respiration was examined. Influence of four low frequency magnetic field ranges was examined: 10-200 Hz, 200-300 Hz, 300-650 Hz and 650-1000 Hz. All analyzed frequency ranges gave the same influence on the yeast cells respiration.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Proceedings - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Influence of low frequency ranges of magnetic field on Saccharomyces cerevisiae respiration",
volume = "1",
pages = "499-502",
url = "https://hdl.handle.net/21.15107/rcub_cer_3982"
}

Bubanja, I. N., Lončarević, B., Lješević, M., Beškoski, V., Gojgić-Cvijović, G., Velikić, Z.,& Stanisavljev, D.. (2018). Influence of low frequency ranges of magnetic field on Saccharomyces cerevisiae respiration. in Proceedings - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Society of Physical Chemists of Serbia., 1, 499-502.
https://hdl.handle.net/21.15107/rcub_cer_3982

Bubanja IN, Lončarević B, Lješević M, Beškoski V, Gojgić-Cvijović G, Velikić Z, Stanisavljev D. Influence of low frequency ranges of magnetic field on Saccharomyces cerevisiae respiration. in Proceedings - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2018;1:499-502.
https://hdl.handle.net/21.15107/rcub_cer_3982 .

Bubanja, Itana Nuša, Lončarević, Branka, Lješević, Marija, Beškoski, Vladimir, Gojgić-Cvijović, Gordana, Velikić, Zoran, Stanisavljev, Dragomir, "Influence of low frequency ranges of magnetic field on Saccharomyces cerevisiae respiration" in Proceedings - 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 1 (2018):499-502,
https://hdl.handle.net/21.15107/rcub_cer_3982 .

TY  - CONF
AU  - Cvetanović-Zobenica, Katarina
AU  - Rašljić, Milena
AU  - Smiljanić, Milče M.
AU  - Vasiljević-Radović, Dana
AU  - Stanisavljev, Dragomir
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5798
AB  - Dye sensitized solar cells are photovoltaic devices which simulate photosynthesis [1,2]. Comparing to other solar cells, they cost less and are easy to manufacture. One of themost important parts of this system is adye. A monolayer of dye, adsorbed onto semiconductor surface collects sunlight, which is further being transformed into electrical energy. Many types of sensitizers are known today: organic, inorganic, synthetic, natural [3].Cells with synthetic ruthenium dyes have the highest efficiency of conversion sun energy into electrical. The greatdisadvantage of ruthenium dyes is their price. Natural pigments, on the other hand, extracted from plants, fruits andflowers are available and affordable, though they gain efficiency of conversion of only a fewpercent. The basic problem with using natural dyes as sensitizers is their aggregation on the semisonductor surface. A major factor responsable for the low phtoconversion efficiencyof an organic dye sensitized solar cell is the formation of dye aggregate on the semiconducuctor surface. Such an aggregation effect can bring about significant changes in the absorption and photosensitizing properties of the sensitizing dye molecule. One can minimize aggregation effect on the semiconductor surface using dyes with particularanchoring groups [4] or antiaggregation coadsorbents [5]. Computational calculations (density functional theory(DFT), time-dependent DFT (TDDFT)) are also a convenient approach for investigation of aggregationof dye molecules [6].
PB  - University of Belgrade - Institute of Chemistry, Technology and Metallurgy
C3  - Book of abstracts - COST MP1402 HERALD Scientific Workshop, "ALD and related ultra-thin film processes for advanced devices", 29-30 August 2017, Belgrade
T1  - Aggregation problem of dye monolayer in dye sensitized solar cells
SP  - 25
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_cer_5798
ER  - 

@conference{
author = "Cvetanović-Zobenica, Katarina and Rašljić, Milena and Smiljanić, Milče M. and Vasiljević-Radović, Dana and Stanisavljev, Dragomir",
year = "2017",
abstract = "Dye sensitized solar cells are photovoltaic devices which simulate photosynthesis [1,2]. Comparing to other solar cells, they cost less and are easy to manufacture. One of themost important parts of this system is adye. A monolayer of dye, adsorbed onto semiconductor surface collects sunlight, which is further being transformed into electrical energy. Many types of sensitizers are known today: organic, inorganic, synthetic, natural [3].Cells with synthetic ruthenium dyes have the highest efficiency of conversion sun energy into electrical. The greatdisadvantage of ruthenium dyes is their price. Natural pigments, on the other hand, extracted from plants, fruits andflowers are available and affordable, though they gain efficiency of conversion of only a fewpercent. The basic problem with using natural dyes as sensitizers is their aggregation on the semisonductor surface. A major factor responsable for the low phtoconversion efficiencyof an organic dye sensitized solar cell is the formation of dye aggregate on the semiconducuctor surface. Such an aggregation effect can bring about significant changes in the absorption and photosensitizing properties of the sensitizing dye molecule. One can minimize aggregation effect on the semiconductor surface using dyes with particularanchoring groups [4] or antiaggregation coadsorbents [5]. Computational calculations (density functional theory(DFT), time-dependent DFT (TDDFT)) are also a convenient approach for investigation of aggregationof dye molecules [6].",
publisher = "University of Belgrade - Institute of Chemistry, Technology and Metallurgy",
journal = "Book of abstracts - COST MP1402 HERALD Scientific Workshop, "ALD and related ultra-thin film processes for advanced devices", 29-30 August 2017, Belgrade",
title = "Aggregation problem of dye monolayer in dye sensitized solar cells",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_cer_5798"
}

Cvetanović-Zobenica, K., Rašljić, M., Smiljanić, M. M., Vasiljević-Radović, D.,& Stanisavljev, D.. (2017). Aggregation problem of dye monolayer in dye sensitized solar cells. in Book of abstracts - COST MP1402 HERALD Scientific Workshop, "ALD and related ultra-thin film processes for advanced devices", 29-30 August 2017, Belgrade
University of Belgrade - Institute of Chemistry, Technology and Metallurgy., 25-25.
https://hdl.handle.net/21.15107/rcub_cer_5798

Cvetanović-Zobenica K, Rašljić M, Smiljanić MM, Vasiljević-Radović D, Stanisavljev D. Aggregation problem of dye monolayer in dye sensitized solar cells. in Book of abstracts - COST MP1402 HERALD Scientific Workshop, "ALD and related ultra-thin film processes for advanced devices", 29-30 August 2017, Belgrade. 2017;:25-25.
https://hdl.handle.net/21.15107/rcub_cer_5798 .

Cvetanović-Zobenica, Katarina, Rašljić, Milena, Smiljanić, Milče M., Vasiljević-Radović, Dana, Stanisavljev, Dragomir, "Aggregation problem of dye monolayer in dye sensitized solar cells" in Book of abstracts - COST MP1402 HERALD Scientific Workshop, "ALD and related ultra-thin film processes for advanced devices", 29-30 August 2017, Belgrade (2017):25-25,
https://hdl.handle.net/21.15107/rcub_cer_5798 .

TY  - JOUR
AU  - Stanisavljev, Dragomir
AU  - Gojgić-Cvijović, Gordana
AU  - Bubanja, Itana Nuša
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2066
AB  - Taking into account different literature reports on microwave (MW) effects on living organisms, we thoroughly investigated the influence of constant 2.45 GHz MW irradiation on glucose uptake in yeast cells. A Saccharomyces cerevisiae suspension of 2.9 x 10(8) cells/ml was used in all experiments. A large specific absorption rate of 0.55 W/g of suspension is compensated by efficient external cooling of the reaction vessel, which established a strong non-equilibrium flow of energy through the solution and enabled a constant bulk temperature of 30 A degrees C to within 1 A degrees C during glucose uptake. Comparison of MW effects with control experiments revealed insignificant changes of glucose uptake during the initial stages of the experiment (up to the 10th min). Statistically "notable" differences during the next 20 min of the irradiation were detected corresponding to thermal overheating of 2 A degrees C. Possible specific thermal MW effects may be related to local temperature increase and a large flow of energy throughout the system. The obtained effects show that environmental MW pollution (fortunately) is of too low intensity to provoke metabolic changes in living cells. At the same time, a longer exposure of cells to electromagnetic irradiation may have impacts on biochemical applications and production of valuable biotechnological products.
PB  - Springer, New York
T2  - European Biophysics Journal With Biophysics Letters
T1  - Scrutinizing microwave effects on glucose uptake in yeast cells
VL  - 46
IS  - 1
SP  - 25
EP  - 31
DO  - 10.1007/s00249-016-1131-4
ER  - 

@article{
author = "Stanisavljev, Dragomir and Gojgić-Cvijović, Gordana and Bubanja, Itana Nuša",
year = "2017",
abstract = "Taking into account different literature reports on microwave (MW) effects on living organisms, we thoroughly investigated the influence of constant 2.45 GHz MW irradiation on glucose uptake in yeast cells. A Saccharomyces cerevisiae suspension of 2.9 x 10(8) cells/ml was used in all experiments. A large specific absorption rate of 0.55 W/g of suspension is compensated by efficient external cooling of the reaction vessel, which established a strong non-equilibrium flow of energy through the solution and enabled a constant bulk temperature of 30 A degrees C to within 1 A degrees C during glucose uptake. Comparison of MW effects with control experiments revealed insignificant changes of glucose uptake during the initial stages of the experiment (up to the 10th min). Statistically "notable" differences during the next 20 min of the irradiation were detected corresponding to thermal overheating of 2 A degrees C. Possible specific thermal MW effects may be related to local temperature increase and a large flow of energy throughout the system. The obtained effects show that environmental MW pollution (fortunately) is of too low intensity to provoke metabolic changes in living cells. At the same time, a longer exposure of cells to electromagnetic irradiation may have impacts on biochemical applications and production of valuable biotechnological products.",
publisher = "Springer, New York",
journal = "European Biophysics Journal With Biophysics Letters",
title = "Scrutinizing microwave effects on glucose uptake in yeast cells",
volume = "46",
number = "1",
pages = "25-31",
doi = "10.1007/s00249-016-1131-4"
}

Stanisavljev, D., Gojgić-Cvijović, G.,& Bubanja, I. N.. (2017). Scrutinizing microwave effects on glucose uptake in yeast cells. in European Biophysics Journal With Biophysics Letters
Springer, New York., 46(1), 25-31.
https://doi.org/10.1007/s00249-016-1131-4

Stanisavljev D, Gojgić-Cvijović G, Bubanja IN. Scrutinizing microwave effects on glucose uptake in yeast cells. in European Biophysics Journal With Biophysics Letters. 2017;46(1):25-31.
doi:10.1007/s00249-016-1131-4 .

Stanisavljev, Dragomir, Gojgić-Cvijović, Gordana, Bubanja, Itana Nuša, "Scrutinizing microwave effects on glucose uptake in yeast cells" in European Biophysics Journal With Biophysics Letters, 46, no. 1 (2017):25-31,
https://doi.org/10.1007/s00249-016-1131-4 . .

TY  - JOUR
AU  - Novaković, Tatjana
AU  - Rožić, Ljiljana
AU  - Petrović, Srđan
AU  - Stanisavljev, Dragomir
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1839
AB  - The desorption behavior of β-carotene from a bentonite adsorbent under microwave irradiation in isopropanol was studied as a function of temperature and different initial loading concentrations. A first-order, two-component, three-parameter model described the desorption kinetics with a coefficient of de-termination R2 > 0.9932, and the β-carotene desorption process under microwave irradiation was con-trolled by both rapid and slow desorption. The activation energies of β-carotene desorption for the rapid and slow desorption processes were 19.61 and 53.04 kJ mol-1, respectively. It was observed that the de-sorption equilibrium data fitted well to both the Freundlich and Langmuir isotherms. The data obtained from the desorption-isotherm model were used to determine the thermodynamic parameters. The positive value of free energy indicates the non-spontaneity of β-carotene desorption. The change in entropy rela-tive to the enthalpy of desorption reveals that the reaction is physical in nature.
AB  - Десорпциското однесување на β-каротенот од бентонитски атсорбент беше истражувано во
услови на микробранова ирадијација како функција на температурата и различни концентрации на
полнењето. Кинтетички двокомпонентен модел од прв ред со три параметри ја опишува
десорпциската кинетика со коефицинет на корелација R
2
> 0.9932. Десорпцискиот процес на βкаротенот во услови на микробранова ирадијација е контролиран и со брза и со бавна десорпција.
Активациските енергии на десорпцијата на β-каротенот за брзата и за бавната десорпција
соодветно изнесуваат 19,61 kJ mol–1
и 53,04 kJ mol–1
. Забележано е дека десорпциската рамнотежа
добро се вклопува во изотермите на Freundlich и на Langmuir. Добиените податоци на моделот на
десорпциската изотерма се употребени за определување на термодинамички параметри.
Позитивната вредност на слободната енергија укажува на неспонтаност на десорпцијата на βкаротенот. Промената на ентропијата во однос на енталпијата укажува дека десопцијата по
природа е физичка.
PB  - Macedonian Journal of Chemistry and Chemical Engineering
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - Desorption of β-carotene from bentonite adsorbent under microwave irradiation
T1  - ДЕСОРПЦИЈА НА β-КАРОТЕН ОД БЕНТОНИТСКИ АТСОРБЕНТ ВО УСЛОВИ НА МИКРОБРАНОВА ИРАДИЈАЦИЈА
VL  - 34
IS  - 2
SP  - 363
EP  - 371
UR  - https://hdl.handle.net/21.15107/rcub_cer_1839
ER  - 

@article{
author = "Novaković, Tatjana and Rožić, Ljiljana and Petrović, Srđan and Stanisavljev, Dragomir",
year = "2015",
abstract = "The desorption behavior of β-carotene from a bentonite adsorbent under microwave irradiation in isopropanol was studied as a function of temperature and different initial loading concentrations. A first-order, two-component, three-parameter model described the desorption kinetics with a coefficient of de-termination R2 > 0.9932, and the β-carotene desorption process under microwave irradiation was con-trolled by both rapid and slow desorption. The activation energies of β-carotene desorption for the rapid and slow desorption processes were 19.61 and 53.04 kJ mol-1, respectively. It was observed that the de-sorption equilibrium data fitted well to both the Freundlich and Langmuir isotherms. The data obtained from the desorption-isotherm model were used to determine the thermodynamic parameters. The positive value of free energy indicates the non-spontaneity of β-carotene desorption. The change in entropy rela-tive to the enthalpy of desorption reveals that the reaction is physical in nature., Десорпциското однесување на β-каротенот од бентонитски атсорбент беше истражувано во
услови на микробранова ирадијација како функција на температурата и различни концентрации на
полнењето. Кинтетички двокомпонентен модел од прв ред со три параметри ја опишува
десорпциската кинетика со коефицинет на корелација R
2
> 0.9932. Десорпцискиот процес на βкаротенот во услови на микробранова ирадијација е контролиран и со брза и со бавна десорпција.
Активациските енергии на десорпцијата на β-каротенот за брзата и за бавната десорпција
соодветно изнесуваат 19,61 kJ mol–1
и 53,04 kJ mol–1
. Забележано е дека десорпциската рамнотежа
добро се вклопува во изотермите на Freundlich и на Langmuir. Добиените податоци на моделот на
десорпциската изотерма се употребени за определување на термодинамички параметри.
Позитивната вредност на слободната енергија укажува на неспонтаност на десорпцијата на βкаротенот. Промената на ентропијата во однос на енталпијата укажува дека десопцијата по
природа е физичка.",
publisher = "Macedonian Journal of Chemistry and Chemical Engineering",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "Desorption of β-carotene from bentonite adsorbent under microwave irradiation, ДЕСОРПЦИЈА НА β-КАРОТЕН ОД БЕНТОНИТСКИ АТСОРБЕНТ ВО УСЛОВИ НА МИКРОБРАНОВА ИРАДИЈАЦИЈА",
volume = "34",
number = "2",
pages = "363-371",
url = "https://hdl.handle.net/21.15107/rcub_cer_1839"
}

Novaković, T., Rožić, L., Petrović, S.,& Stanisavljev, D.. (2015). Desorption of β-carotene from bentonite adsorbent under microwave irradiation. in Macedonian Journal of Chemistry and Chemical Engineering
Macedonian Journal of Chemistry and Chemical Engineering., 34(2), 363-371.
https://hdl.handle.net/21.15107/rcub_cer_1839

Novaković T, Rožić L, Petrović S, Stanisavljev D. Desorption of β-carotene from bentonite adsorbent under microwave irradiation. in Macedonian Journal of Chemistry and Chemical Engineering. 2015;34(2):363-371.
https://hdl.handle.net/21.15107/rcub_cer_1839 .

Novaković, Tatjana, Rožić, Ljiljana, Petrović, Srđan, Stanisavljev, Dragomir, "Desorption of β-carotene from bentonite adsorbent under microwave irradiation" in Macedonian Journal of Chemistry and Chemical Engineering, 34, no. 2 (2015):363-371,
https://hdl.handle.net/21.15107/rcub_cer_1839 .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Mojović, Zorica
AU  - Abu Rabi-Stanković, Anđela
AU  - Jović-Jovičić, Nataša
AU  - Marinović, Sanja
AU  - Milenković, Maja
AU  - Stanisavljev, Dragomir
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6299
AB  - Cyclic voltammetry (CV) was used to study the dynamic instability of
electrochemical oxidation of methanol in alkaline solution at stationary platinum
electrode. Methanol oxidation was carried out in bicarbonate, carbonate and
different pH values of sodium hydroxide solution. Experiments were conducted
with and without previous stabilization of the working electrode in alkaline
solution.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2012, September 24-28, Belgrade, Serbia
T1  - Dynamic instability of methanol oxidation from alkaline solution on stationary Pt electrode
VL  - I
SP  - 258
EP  - 260
UR  - https://hdl.handle.net/21.15107/rcub_cer_6299
ER  - 

@conference{
author = "Mudrinić, Tihana and Mojović, Zorica and Abu Rabi-Stanković, Anđela and Jović-Jovičić, Nataša and Marinović, Sanja and Milenković, Maja and Stanisavljev, Dragomir",
year = "2012",
abstract = "Cyclic voltammetry (CV) was used to study the dynamic instability of
electrochemical oxidation of methanol in alkaline solution at stationary platinum
electrode. Methanol oxidation was carried out in bicarbonate, carbonate and
different pH values of sodium hydroxide solution. Experiments were conducted
with and without previous stabilization of the working electrode in alkaline
solution.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2012, September 24-28, Belgrade, Serbia",
title = "Dynamic instability of methanol oxidation from alkaline solution on stationary Pt electrode",
volume = "I",
pages = "258-260",
url = "https://hdl.handle.net/21.15107/rcub_cer_6299"
}

Mudrinić, T., Mojović, Z., Abu Rabi-Stanković, A., Jović-Jovičić, N., Marinović, S., Milenković, M.,& Stanisavljev, D.. (2012). Dynamic instability of methanol oxidation from alkaline solution on stationary Pt electrode. in Proceedings - 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2012, September 24-28, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 258-260.
https://hdl.handle.net/21.15107/rcub_cer_6299

Mudrinić T, Mojović Z, Abu Rabi-Stanković A, Jović-Jovičić N, Marinović S, Milenković M, Stanisavljev D. Dynamic instability of methanol oxidation from alkaline solution on stationary Pt electrode. in Proceedings - 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2012, September 24-28, Belgrade, Serbia. 2012;I:258-260.
https://hdl.handle.net/21.15107/rcub_cer_6299 .

Mudrinić, Tihana, Mojović, Zorica, Abu Rabi-Stanković, Anđela, Jović-Jovičić, Nataša, Marinović, Sanja, Milenković, Maja, Stanisavljev, Dragomir, "Dynamic instability of methanol oxidation from alkaline solution on stationary Pt electrode" in Proceedings - 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2012, September 24-28, Belgrade, Serbia, I (2012):258-260,
https://hdl.handle.net/21.15107/rcub_cer_6299 .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Vuković, Zorica
AU  - Novaković, Tatjana
AU  - Stanisavljev, Dragomir
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/946
AB  - Microwave irradiation as a means for heating bentonites during acid activation has been investigated in the past but it has never been optimized for industrial applications. The purpose of this study was to apply a factorial 2(3) experimental design to a Serbian bentonite in order to determine the influence of microwave heating on the acid-activation process. The effect of acid activation under microwave irradiation on the textural and structural properties of bentonite was studied as a model reaction. A mathematical, second-order response surface model (RSM) was developed with a central composite design that incorporated the relationships among various process parameters (time, acid concentration, and microwave heating power) and the selected process response of specific surface area of the bentonite. The ranges of values for the process parameters chosen were: time, 5-21 min; acid concentration, 2-7 M; and microwave heating power, 63-172 W. The effect of individual variables and their interaction effects on the textural and structural properties of the bentonite were determined. Statistical analysis showed that the duration of microwave irradiation was less significant than the other two factors. The model showed that increasing the time and acid concentration improved the textural properties of bentonites, resulting in increased specific surface area. This model is useful for setting an optimum value of the activation parameters for achieving the maximum specific surface area. An optimum specific surface area of 142 m(2)g(-1) was achieved with an acid concentration of 5.2 M, activation time of 7.4 min, and microwave power of 117 W.
PB  - Clay Minerals Soc, Chantilly
T2  - Clays and Clay Minerals
T1  - Response surface optimization for activation of bentonite using microwave irradiation
VL  - 60
IS  - 1
SP  - 32
EP  - 39
DO  - 10.1346/CCMN.2012.0600103
ER  - 

@article{
author = "Petrović, Srđan and Rožić, Ljiljana and Vuković, Zorica and Novaković, Tatjana and Stanisavljev, Dragomir",
year = "2012",
abstract = "Microwave irradiation as a means for heating bentonites during acid activation has been investigated in the past but it has never been optimized for industrial applications. The purpose of this study was to apply a factorial 2(3) experimental design to a Serbian bentonite in order to determine the influence of microwave heating on the acid-activation process. The effect of acid activation under microwave irradiation on the textural and structural properties of bentonite was studied as a model reaction. A mathematical, second-order response surface model (RSM) was developed with a central composite design that incorporated the relationships among various process parameters (time, acid concentration, and microwave heating power) and the selected process response of specific surface area of the bentonite. The ranges of values for the process parameters chosen were: time, 5-21 min; acid concentration, 2-7 M; and microwave heating power, 63-172 W. The effect of individual variables and their interaction effects on the textural and structural properties of the bentonite were determined. Statistical analysis showed that the duration of microwave irradiation was less significant than the other two factors. The model showed that increasing the time and acid concentration improved the textural properties of bentonites, resulting in increased specific surface area. This model is useful for setting an optimum value of the activation parameters for achieving the maximum specific surface area. An optimum specific surface area of 142 m(2)g(-1) was achieved with an acid concentration of 5.2 M, activation time of 7.4 min, and microwave power of 117 W.",
publisher = "Clay Minerals Soc, Chantilly",
journal = "Clays and Clay Minerals",
title = "Response surface optimization for activation of bentonite using microwave irradiation",
volume = "60",
number = "1",
pages = "32-39",
doi = "10.1346/CCMN.2012.0600103"
}

Petrović, S., Rožić, L., Vuković, Z., Novaković, T.,& Stanisavljev, D.. (2012). Response surface optimization for activation of bentonite using microwave irradiation. in Clays and Clay Minerals
Clay Minerals Soc, Chantilly., 60(1), 32-39.
https://doi.org/10.1346/CCMN.2012.0600103

Petrović S, Rožić L, Vuković Z, Novaković T, Stanisavljev D. Response surface optimization for activation of bentonite using microwave irradiation. in Clays and Clay Minerals. 2012;60(1):32-39.
doi:10.1346/CCMN.2012.0600103 .

Petrović, Srđan, Rožić, Ljiljana, Vuković, Zorica, Novaković, Tatjana, Stanisavljev, Dragomir, "Response surface optimization for activation of bentonite using microwave irradiation" in Clays and Clay Minerals, 60, no. 1 (2012):32-39,
https://doi.org/10.1346/CCMN.2012.0600103 . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Novaković, Tatjana
AU  - Petrović, Srđan
AU  - Vuković, Zorica
AU  - Stanisavljev, Dragomir
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1074
AB  - In this paper the effect of acid activation by conventional and under microwave irradiation on the textural and structural properties of bentonite was studied. The adsorbents were characterized by powder X-ray diffraction and the BET method using the nitrogen adsorption technique. The XRD patterns of raw clay demonstrated maximum intensities within the ranges typical for smectite group minerals. From X-ray powder diffraction patterns of both activated samples absent of calcite characteristic reflection was confirmed. Higher degree of dealumination and decationization was achieved for sample activated by conventional, as can be determined from XRD patterns. Sorption analysis results showed that activated bentonite samples contain slit shaped pores, and meso- and microporosity better than natural bentonite. Sample activated under microwave irradiation has developed microporosity and high specific surface area, with no leaching of the structural cautions.
AB  - U ovom radu je ispitivan uticaj hemijske aktivacije, na konvencionalan način i aktivacije u mikrotalasnom polju, na strukturna i teksturalna svojstva dobijenog adsorbensa. Kao polazni materijal korišćen je bentonit. Kao metode karakterizacije korišćene su rendgenska difrakcija i BET-metoda analize niskotemperaturnih adsorpciono-desorpcionih izotermi azota. Rendgenskom difrakcijom na prahu je utvrđeno da je smektitna faza dominantna. Nakon aktivacije kod oba aktivirana uzorka uočen je gubitak karakteristične refleksije kalcita usled rastvaranja u kiseloj sredini. Hemijska analiza je pokazala da je veći stepen dealuminacije i dekatjonizacije postignut kod uzorka aktiviranog na konvencionalan način, što je potvrđeno i difraktogramima praha uzoraka. Rezultati sorpcione analize su pokazali da aktivirani uzorci sadrže pore tipa prskotina i da imaju bolje razvijenu poroznost u oblasti mikro i mezopora od prirodnog bentonita. Kod uzorka aktiviranog u mikrotalasnom polju došlo je do razvoja mezoporozne strukture i rasta specifične površine, a da je pri tome očuvana smektitna struktura u većoj meri nego kod uzorka sintetisanog na konvencionalan način.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Properties of adsorbent obtained by conventional and under microwave irradiation
T1  - Svojstva adsorbensa dobijenog aktivacijom bentonita na konvencionalan način i u mikrotalasnom polju
VL  - 67
IS  - 1
SP  - 17
EP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_cer_1074
ER  - 

@article{
author = "Rožić, Ljiljana and Novaković, Tatjana and Petrović, Srđan and Vuković, Zorica and Stanisavljev, Dragomir",
year = "2012",
abstract = "In this paper the effect of acid activation by conventional and under microwave irradiation on the textural and structural properties of bentonite was studied. The adsorbents were characterized by powder X-ray diffraction and the BET method using the nitrogen adsorption technique. The XRD patterns of raw clay demonstrated maximum intensities within the ranges typical for smectite group minerals. From X-ray powder diffraction patterns of both activated samples absent of calcite characteristic reflection was confirmed. Higher degree of dealumination and decationization was achieved for sample activated by conventional, as can be determined from XRD patterns. Sorption analysis results showed that activated bentonite samples contain slit shaped pores, and meso- and microporosity better than natural bentonite. Sample activated under microwave irradiation has developed microporosity and high specific surface area, with no leaching of the structural cautions., U ovom radu je ispitivan uticaj hemijske aktivacije, na konvencionalan način i aktivacije u mikrotalasnom polju, na strukturna i teksturalna svojstva dobijenog adsorbensa. Kao polazni materijal korišćen je bentonit. Kao metode karakterizacije korišćene su rendgenska difrakcija i BET-metoda analize niskotemperaturnih adsorpciono-desorpcionih izotermi azota. Rendgenskom difrakcijom na prahu je utvrđeno da je smektitna faza dominantna. Nakon aktivacije kod oba aktivirana uzorka uočen je gubitak karakteristične refleksije kalcita usled rastvaranja u kiseloj sredini. Hemijska analiza je pokazala da je veći stepen dealuminacije i dekatjonizacije postignut kod uzorka aktiviranog na konvencionalan način, što je potvrđeno i difraktogramima praha uzoraka. Rezultati sorpcione analize su pokazali da aktivirani uzorci sadrže pore tipa prskotina i da imaju bolje razvijenu poroznost u oblasti mikro i mezopora od prirodnog bentonita. Kod uzorka aktiviranog u mikrotalasnom polju došlo je do razvoja mezoporozne strukture i rasta specifične površine, a da je pri tome očuvana smektitna struktura u većoj meri nego kod uzorka sintetisanog na konvencionalan način.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Properties of adsorbent obtained by conventional and under microwave irradiation, Svojstva adsorbensa dobijenog aktivacijom bentonita na konvencionalan način i u mikrotalasnom polju",
volume = "67",
number = "1",
pages = "17-21",
url = "https://hdl.handle.net/21.15107/rcub_cer_1074"
}

Rožić, L., Novaković, T., Petrović, S., Vuković, Z.,& Stanisavljev, D.. (2012). Properties of adsorbent obtained by conventional and under microwave irradiation. in Tehnika
Savez inženjera i tehničara Srbije., 67(1), 17-21.
https://hdl.handle.net/21.15107/rcub_cer_1074

Rožić L, Novaković T, Petrović S, Vuković Z, Stanisavljev D. Properties of adsorbent obtained by conventional and under microwave irradiation. in Tehnika. 2012;67(1):17-21.
https://hdl.handle.net/21.15107/rcub_cer_1074 .

Rožić, Ljiljana, Novaković, Tatjana, Petrović, Srđan, Vuković, Zorica, Stanisavljev, Dragomir, "Properties of adsorbent obtained by conventional and under microwave irradiation" in Tehnika, 67, no. 1 (2012):17-21,
https://hdl.handle.net/21.15107/rcub_cer_1074 .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Petrović, Srđan
AU  - Vuković, Zorica
AU  - Novaković, Tatjana
AU  - Stanisavljev, Dragomir
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/834
AB  - In this study, the statistical design of the experimental method was applied on the process of acid activation of bentonite with microwave irradiation. The influence of activation parameters (time, acid normality and microwave heating power) on the selected process response of the activated bentonite samples was studied. The specific surface area was chosen for the process response, because the chemical, surface and structural properties of the activated clay determine and limit its potential applications. The relationship of various process parameters with the specific surface area of bentonite was examined. A mathematical model was developed using a second-order response surface model (RSM) with a central composite design incorporating the above mentioned process parameters. The developed mathematical model helped to predict the variation in specific surface area of activated bentonite with time (5-21 min), acid normality (2-7 N) and microwave heating power (63?172 W). The calculated regression models were found to be statistically significant at the required range and presented little variability. Furthermore, high values of R2 (0.957) and R2 (adjusted) (0.914) indicate a high dependence and correlation between the observed and the predicted values of the response. These high values also indicate that about 96% of the result of the total variation can be explained by this model. In addition, the model shows that increasing the time and acid normality improves the textural properties of bentonites, resulting in increased specific surface area. This model also can be useful for setting an optimum value of the activation parameters for achieving the maximum specific surface area. An optimum specific surface area of 142 m2g-1 was achieved with an acid normality of 5.2 N, activation time of 7.38 min and microwave power of 117 W. Acid activation of bentonite was found to occur faster with microwave irradiation than with conventional heating. Microwave-assisted processes have the potential to develop into a cost efficient route for acid activation of bentonite.
AB  - Radi dobijanja efikasnog adsorbensa štetnih i opasnih materija izvršena je optimizacija parametara procesa sinteze kiselinski aktiviranog bentonita u mikrotalasnom polju na bazi statističkih planova eksperimenta. Tokom planiranja eksperimenata razmatran je uticaj snage mikrotalasnog polja, vremena aktivacije i koncentracije kiseline na poroznu strukturu aktiviranog materijala. Utvrđeno je da specifična površina zavisno od uslova procesa, ima minimalnu vrednost od 114,0 m2 g-1 za adsorbens sintetisan pri uslovima definisanim u eksperimentu 11 (4,5 N HCl, 21 min i 117 W), a maksimalnu vrednost od 153,5 m2 g-1 za adsorbens dobijen u eksperimentu 8 (3 N HCl, 17 min i 85 W). Ustanovljeno je da tokom procesa kiselinske aktivacije bentonita u mikrotalasnom polju najveći uticaj na formiranje specifične površine ima faktor vreme. Rezultati optimizacije procesa zasnovane na funkciji poželjnosti uz uslov minimalnog vremena aktivacije, vrednosti koncentracije kiseline i snage mikrotalasnog zračenja u zadatom opsegu, pokazali su da je optimalno vreme aktivacije bentonita u mikrotalasnom polju 7,38 min dok kod hidrotermalne aktivacije sa kiselinom iste koncentracije potrebno vreme iznosi 2,8 h.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Response surface optimisation for activation of bentonite with microwave irradiation
T1  - Optimalno faktorno planiranje procesa kiselinske aktivacije bentonita u mikrotalasnom polju
VL  - 65
IS  - 5
SP  - 489
EP  - 495
DO  - 10.2298/HEMIND110420043R
ER  - 

@article{
author = "Rožić, Ljiljana and Petrović, Srđan and Vuković, Zorica and Novaković, Tatjana and Stanisavljev, Dragomir",
year = "2011",
abstract = "In this study, the statistical design of the experimental method was applied on the process of acid activation of bentonite with microwave irradiation. The influence of activation parameters (time, acid normality and microwave heating power) on the selected process response of the activated bentonite samples was studied. The specific surface area was chosen for the process response, because the chemical, surface and structural properties of the activated clay determine and limit its potential applications. The relationship of various process parameters with the specific surface area of bentonite was examined. A mathematical model was developed using a second-order response surface model (RSM) with a central composite design incorporating the above mentioned process parameters. The developed mathematical model helped to predict the variation in specific surface area of activated bentonite with time (5-21 min), acid normality (2-7 N) and microwave heating power (63?172 W). The calculated regression models were found to be statistically significant at the required range and presented little variability. Furthermore, high values of R2 (0.957) and R2 (adjusted) (0.914) indicate a high dependence and correlation between the observed and the predicted values of the response. These high values also indicate that about 96% of the result of the total variation can be explained by this model. In addition, the model shows that increasing the time and acid normality improves the textural properties of bentonites, resulting in increased specific surface area. This model also can be useful for setting an optimum value of the activation parameters for achieving the maximum specific surface area. An optimum specific surface area of 142 m2g-1 was achieved with an acid normality of 5.2 N, activation time of 7.38 min and microwave power of 117 W. Acid activation of bentonite was found to occur faster with microwave irradiation than with conventional heating. Microwave-assisted processes have the potential to develop into a cost efficient route for acid activation of bentonite., Radi dobijanja efikasnog adsorbensa štetnih i opasnih materija izvršena je optimizacija parametara procesa sinteze kiselinski aktiviranog bentonita u mikrotalasnom polju na bazi statističkih planova eksperimenta. Tokom planiranja eksperimenata razmatran je uticaj snage mikrotalasnog polja, vremena aktivacije i koncentracije kiseline na poroznu strukturu aktiviranog materijala. Utvrđeno je da specifična površina zavisno od uslova procesa, ima minimalnu vrednost od 114,0 m2 g-1 za adsorbens sintetisan pri uslovima definisanim u eksperimentu 11 (4,5 N HCl, 21 min i 117 W), a maksimalnu vrednost od 153,5 m2 g-1 za adsorbens dobijen u eksperimentu 8 (3 N HCl, 17 min i 85 W). Ustanovljeno je da tokom procesa kiselinske aktivacije bentonita u mikrotalasnom polju najveći uticaj na formiranje specifične površine ima faktor vreme. Rezultati optimizacije procesa zasnovane na funkciji poželjnosti uz uslov minimalnog vremena aktivacije, vrednosti koncentracije kiseline i snage mikrotalasnog zračenja u zadatom opsegu, pokazali su da je optimalno vreme aktivacije bentonita u mikrotalasnom polju 7,38 min dok kod hidrotermalne aktivacije sa kiselinom iste koncentracije potrebno vreme iznosi 2,8 h.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Response surface optimisation for activation of bentonite with microwave irradiation, Optimalno faktorno planiranje procesa kiselinske aktivacije bentonita u mikrotalasnom polju",
volume = "65",
number = "5",
pages = "489-495",
doi = "10.2298/HEMIND110420043R"
}

Rožić, L., Petrović, S., Vuković, Z., Novaković, T.,& Stanisavljev, D.. (2011). Response surface optimisation for activation of bentonite with microwave irradiation. in Hemijska industrija
Association of Chemical Engineers of Serbia., 65(5), 489-495.
https://doi.org/10.2298/HEMIND110420043R

Rožić L, Petrović S, Vuković Z, Novaković T, Stanisavljev D. Response surface optimisation for activation of bentonite with microwave irradiation. in Hemijska industrija. 2011;65(5):489-495.
doi:10.2298/HEMIND110420043R .

Rožić, Ljiljana, Petrović, Srđan, Vuković, Zorica, Novaković, Tatjana, Stanisavljev, Dragomir, "Response surface optimisation for activation of bentonite with microwave irradiation" in Hemijska industrija, 65, no. 5 (2011):489-495,
https://doi.org/10.2298/HEMIND110420043R . .