TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Nikolić, Zoran S.
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Miljković, Miroslav
AU  - Jordović, Branka
AU  - Živković, Ljiljana
PY  - 2010
UR  - https://dais.sanu.ac.rs/123456789/3437
AB  - In this article, ytterbium and erbium oxides are used as doping materials for barium titanate (BaTiO3) materials. The amphoteric behavior of these rare-earth ions leads to the increase of dielectric permittivity and decrease of dielectric losses. BaTiO3 ceramics doped with 0.01-0.5 wt% of Yb2O3 and Er2O3 were prepared by conventional solid-state procedure and sintered at 1320°C for 4 h. In BaTiO3 doped with a low content of rare-earth ions (0.01 wt%) the grain size ranged between 10 and 25 μm. With the higher dopant concentration of 0.5 wt%, the abnormal grain growth is inhibited and the grain size ranged between 2 and 10 μm. The measurements of capacitance and dielectric losses as a function of frequency and temperature have been carried out in order to correlate the microstructure and dielectric properties of doped BaTiO 3 ceramics. The temperature dependence of the dielectric constant as a function of dopant amount has been investigated. © 2009 The American Ceramic Society.
T2  - Journal of the American Ceramic Society
T1  - Influence of rare-earth dopants on barium titanate ceramics microstructure and corresponding electrical properties
SP  - 132
EP  - 137
VL  - 93
IS  - 1
DO  - 10.1111/j.1551-2916.2009.03309.x
UR  - https://hdl.handle.net/21.15107/rcub_dais_3437
ER  - 

@article{
author = "Mitić, Vojislav V. and Nikolić, Zoran S. and Pavlović, Vladimir B. and Paunović, Vesna and Miljković, Miroslav and Jordović, Branka and Živković, Ljiljana",
year = "2010",
abstract = "In this article, ytterbium and erbium oxides are used as doping materials for barium titanate (BaTiO3) materials. The amphoteric behavior of these rare-earth ions leads to the increase of dielectric permittivity and decrease of dielectric losses. BaTiO3 ceramics doped with 0.01-0.5 wt% of Yb2O3 and Er2O3 were prepared by conventional solid-state procedure and sintered at 1320°C for 4 h. In BaTiO3 doped with a low content of rare-earth ions (0.01 wt%) the grain size ranged between 10 and 25 μm. With the higher dopant concentration of 0.5 wt%, the abnormal grain growth is inhibited and the grain size ranged between 2 and 10 μm. The measurements of capacitance and dielectric losses as a function of frequency and temperature have been carried out in order to correlate the microstructure and dielectric properties of doped BaTiO 3 ceramics. The temperature dependence of the dielectric constant as a function of dopant amount has been investigated. © 2009 The American Ceramic Society.",
journal = "Journal of the American Ceramic Society",
title = "Influence of rare-earth dopants on barium titanate ceramics microstructure and corresponding electrical properties",
pages = "132-137",
volume = "93",
number = "1",
doi = "10.1111/j.1551-2916.2009.03309.x",
url = "https://hdl.handle.net/21.15107/rcub_dais_3437"
}

Mitić, V. V., Nikolić, Z. S., Pavlović, V. B., Paunović, V., Miljković, M., Jordović, B.,& Živković, L.. (2010). Influence of rare-earth dopants on barium titanate ceramics microstructure and corresponding electrical properties. in Journal of the American Ceramic Society, 93(1), 132-137.
https://doi.org/10.1111/j.1551-2916.2009.03309.x
https://hdl.handle.net/21.15107/rcub_dais_3437

Mitić VV, Nikolić ZS, Pavlović VB, Paunović V, Miljković M, Jordović B, Živković L. Influence of rare-earth dopants on barium titanate ceramics microstructure and corresponding electrical properties. in Journal of the American Ceramic Society. 2010;93(1):132-137.
doi:10.1111/j.1551-2916.2009.03309.x
https://hdl.handle.net/21.15107/rcub_dais_3437 .

Mitić, Vojislav V., Nikolić, Zoran S., Pavlović, Vladimir B., Paunović, Vesna, Miljković, Miroslav, Jordović, Branka, Živković, Ljiljana, "Influence of rare-earth dopants on barium titanate ceramics microstructure and corresponding electrical properties" in Journal of the American Ceramic Society, 93, no. 1 (2010):132-137,
https://doi.org/10.1111/j.1551-2916.2009.03309.x .,
https://hdl.handle.net/21.15107/rcub_dais_3437 .

TY  - JOUR
AU  - Marković, R.
AU  - Friedrich, B.
AU  - Stajić Trošić, Jasna
AU  - Jordović, Branka
AU  - Jugović, Branimir
AU  - Gvozdenović, Milica M.
AU  - Stevanović, Jasmina S.
PY  - 2010
UR  - https://dais.sanu.ac.rs/123456789/4844
AB  - This paper addresses on investigation the possibility of electrolytic treatment the sulphur acidic waste solution, obtained in the conventional electrolytic copper refining process. Beside the high copper concentration, the high concentration of other metals, in this case nickel, is the main characteristic of these waste solutions. Due to this fact, the copper bearing anodes with non-standard nickel, lead, tin and antimony content were specially prepared for the refining process. Nickel content of all anodes was approximately 7.5 mass%, and the content of lead, tin and antimony was varied. The preliminary results, obtained using the standard electrochemical techniques, have indicated that the copper bearing anodes could be used under the same conditions as well as in the conventional copper refining process. The measurements in constant galvanostatic pulse have pointed out that the all chemical elements from copper bearing anodes were dissolved and only copper was deposited onto the cathode. It was also pointed out that Ni concentration in the base working electrolyte (sulphur acidic waste solution), after 72 h of process, increased to 102 mass% at T-1 = 63 +/- 2 degrees C and up to 122 mass% at T-1 = 73 +/- 2 degrees C, while arsenic concentration decreased to a minimum value.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Hazardous Materials
T1  - Behaviour of non-standard composition copper bearing anodes from the copper refining process
SP  - 55
EP  - 63
VL  - 182
IS  - 1-3
DO  - 10.1016/j.jhazmat.2010.05.137
UR  - https://hdl.handle.net/21.15107/rcub_dais_4844
ER  - 

@article{
author = "Marković, R. and Friedrich, B. and Stajić Trošić, Jasna and Jordović, Branka and Jugović, Branimir and Gvozdenović, Milica M. and Stevanović, Jasmina S.",
year = "2010",
abstract = "This paper addresses on investigation the possibility of electrolytic treatment the sulphur acidic waste solution, obtained in the conventional electrolytic copper refining process. Beside the high copper concentration, the high concentration of other metals, in this case nickel, is the main characteristic of these waste solutions. Due to this fact, the copper bearing anodes with non-standard nickel, lead, tin and antimony content were specially prepared for the refining process. Nickel content of all anodes was approximately 7.5 mass%, and the content of lead, tin and antimony was varied. The preliminary results, obtained using the standard electrochemical techniques, have indicated that the copper bearing anodes could be used under the same conditions as well as in the conventional copper refining process. The measurements in constant galvanostatic pulse have pointed out that the all chemical elements from copper bearing anodes were dissolved and only copper was deposited onto the cathode. It was also pointed out that Ni concentration in the base working electrolyte (sulphur acidic waste solution), after 72 h of process, increased to 102 mass% at T-1 = 63 +/- 2 degrees C and up to 122 mass% at T-1 = 73 +/- 2 degrees C, while arsenic concentration decreased to a minimum value.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Hazardous Materials",
title = "Behaviour of non-standard composition copper bearing anodes from the copper refining process",
pages = "55-63",
volume = "182",
number = "1-3",
doi = "10.1016/j.jhazmat.2010.05.137",
url = "https://hdl.handle.net/21.15107/rcub_dais_4844"
}

Marković, R., Friedrich, B., Stajić Trošić, J., Jordović, B., Jugović, B., Gvozdenović, M. M.,& Stevanović, J. S.. (2010). Behaviour of non-standard composition copper bearing anodes from the copper refining process. in Journal of Hazardous Materials
Elsevier Science Bv, Amsterdam., 182(1-3), 55-63.
https://doi.org/10.1016/j.jhazmat.2010.05.137
https://hdl.handle.net/21.15107/rcub_dais_4844

Marković R, Friedrich B, Stajić Trošić J, Jordović B, Jugović B, Gvozdenović MM, Stevanović JS. Behaviour of non-standard composition copper bearing anodes from the copper refining process. in Journal of Hazardous Materials. 2010;182(1-3):55-63.
doi:10.1016/j.jhazmat.2010.05.137
https://hdl.handle.net/21.15107/rcub_dais_4844 .

Marković, R., Friedrich, B., Stajić Trošić, Jasna, Jordović, Branka, Jugović, Branimir, Gvozdenović, Milica M., Stevanović, Jasmina S., "Behaviour of non-standard composition copper bearing anodes from the copper refining process" in Journal of Hazardous Materials, 182, no. 1-3 (2010):55-63,
https://doi.org/10.1016/j.jhazmat.2010.05.137 .,
https://hdl.handle.net/21.15107/rcub_dais_4844 .

TY  - JOUR
AU  - Jovanović, Ivana
AU  - Jordović, Branka
AU  - Petković, Marijana
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/177
AB  - Biodegradable microspheres such as those made of poly-D,L-lactide (PDLLA) are widely investigated delivery systems for drugs or antigens. The aim of this study was to examine experimental conditions in order to produce PDLLA microspheres with the best properties for controlled and sustained drug delivery by the modified precipitation method. For this purpose, the following parameters were varied: co-solvent (methanol or ethanol), the concentration of stabilizer polyvinyl alcohol (PVA), chloroform-to-water ratio and the speed and time of homogenization. Scanning electron microscopy (SEM) and stereological analysis were used to characterize the particles. The average size and morphology of the microspheres varied substantially with preparation conditions from 8.44–1.25 μm. Results showed that the smallest particles were obtained with methanol, 1% PVA and with 10 min of homogenization at 21,000 rpm. Microsc. Res. Tech., 2008. © 2007 Wiley-Liss, Inc.
PB  - Hoboken, NJ : John Wiley & Sons
T2  - Microscopy Research and Technique
T1  - Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: Influence of the process parameters
SP  - 86
EP  - 92
VL  - 72
IS  - 2
DO  - 10.1002/jemt.20529
UR  - https://hdl.handle.net/21.15107/rcub_dais_177
ER  - 

@article{
author = "Jovanović, Ivana and Jordović, Branka and Petković, Marijana and Ignjatović, Nenad and Uskoković, Dragan",
year = "2008",
abstract = "Biodegradable microspheres such as those made of poly-D,L-lactide (PDLLA) are widely investigated delivery systems for drugs or antigens. The aim of this study was to examine experimental conditions in order to produce PDLLA microspheres with the best properties for controlled and sustained drug delivery by the modified precipitation method. For this purpose, the following parameters were varied: co-solvent (methanol or ethanol), the concentration of stabilizer polyvinyl alcohol (PVA), chloroform-to-water ratio and the speed and time of homogenization. Scanning electron microscopy (SEM) and stereological analysis were used to characterize the particles. The average size and morphology of the microspheres varied substantially with preparation conditions from 8.44–1.25 μm. Results showed that the smallest particles were obtained with methanol, 1% PVA and with 10 min of homogenization at 21,000 rpm. Microsc. Res. Tech., 2008. © 2007 Wiley-Liss, Inc.",
publisher = "Hoboken, NJ : John Wiley & Sons",
journal = "Microscopy Research and Technique",
title = "Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: Influence of the process parameters",
pages = "86-92",
volume = "72",
number = "2",
doi = "10.1002/jemt.20529",
url = "https://hdl.handle.net/21.15107/rcub_dais_177"
}

Jovanović, I., Jordović, B., Petković, M., Ignjatović, N.,& Uskoković, D.. (2008). Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: Influence of the process parameters. in Microscopy Research and Technique
Hoboken, NJ : John Wiley & Sons., 72(2), 86-92.
https://doi.org/10.1002/jemt.20529
https://hdl.handle.net/21.15107/rcub_dais_177

Jovanović I, Jordović B, Petković M, Ignjatović N, Uskoković D. Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: Influence of the process parameters. in Microscopy Research and Technique. 2008;72(2):86-92.
doi:10.1002/jemt.20529
https://hdl.handle.net/21.15107/rcub_dais_177 .

Jovanović, Ivana, Jordović, Branka, Petković, Marijana, Ignjatović, Nenad, Uskoković, Dragan, "Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: Influence of the process parameters" in Microscopy Research and Technique, 72, no. 2 (2008):86-92,
https://doi.org/10.1002/jemt.20529 .,
https://hdl.handle.net/21.15107/rcub_dais_177 .

TY  - CONF
AU  - Mitić, Vojislav V.
AU  - Pavlović, Vladimir B.
AU  - Mančić, Dragan
AU  - Paunović, Vesna
AU  - Jordović, Branka
AU  - Živković, Ljiljana
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3562
AB  - Doped barium-titanate ceramic is attracting much interest for its application as resistors with a positive temperature coefficient of resistivity (PTCR), multilayer ceramic capacitors (MLCC), thermal sensors etc. In this article the influence of Yb2O3, Er2O 3 and Ho2O3 on microstructure development and dielectric properties of BaTiO3 ceramics has been presented. BaTiO3-ceramics doped with 0.5 up to 1 wt % of Yb2O 3, Er2O3 and Ho2O3 were prepared by conventional solid state procedure and sintered up to 1320°C for two hours. Microstructure investigations of doped BaTiO3 was performed using the scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and stereological methods. The measurements of capacitance and dielectric losses as a function of frequency and temperature were evaluated by matching model. Special attention has been focused on the study of the changes in morphology, grain and pore size distribution of the sintered specimens and their correlation with the change of capacity, dielectric permittivity and Curie temperature.
PB  - Faenza : ISTEC-CNR
C3  - Global roadmap for ceramics : ICC2 proceedings / 2nd International Congress on Ceramics, [Verona, Italy, June 29 - July 4, 2008]
T1  - Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3
UR  - https://hdl.handle.net/21.15107/rcub_dais_3562
ER  - 

@conference{
author = "Mitić, Vojislav V. and Pavlović, Vladimir B. and Mančić, Dragan and Paunović, Vesna and Jordović, Branka and Živković, Ljiljana",
year = "2008",
abstract = "Doped barium-titanate ceramic is attracting much interest for its application as resistors with a positive temperature coefficient of resistivity (PTCR), multilayer ceramic capacitors (MLCC), thermal sensors etc. In this article the influence of Yb2O3, Er2O 3 and Ho2O3 on microstructure development and dielectric properties of BaTiO3 ceramics has been presented. BaTiO3-ceramics doped with 0.5 up to 1 wt % of Yb2O 3, Er2O3 and Ho2O3 were prepared by conventional solid state procedure and sintered up to 1320°C for two hours. Microstructure investigations of doped BaTiO3 was performed using the scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and stereological methods. The measurements of capacitance and dielectric losses as a function of frequency and temperature were evaluated by matching model. Special attention has been focused on the study of the changes in morphology, grain and pore size distribution of the sintered specimens and their correlation with the change of capacity, dielectric permittivity and Curie temperature.",
publisher = "Faenza : ISTEC-CNR",
journal = "Global roadmap for ceramics : ICC2 proceedings / 2nd International Congress on Ceramics, [Verona, Italy, June 29 - July 4, 2008]",
title = "Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3",
url = "https://hdl.handle.net/21.15107/rcub_dais_3562"
}

Mitić, V. V., Pavlović, V. B., Mančić, D., Paunović, V., Jordović, B.,& Živković, L.. (2008). Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3. in Global roadmap for ceramics : ICC2 proceedings / 2nd International Congress on Ceramics, [Verona, Italy, June 29 - July 4, 2008]
Faenza : ISTEC-CNR..
https://hdl.handle.net/21.15107/rcub_dais_3562

Mitić VV, Pavlović VB, Mančić D, Paunović V, Jordović B, Živković L. Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3. in Global roadmap for ceramics : ICC2 proceedings / 2nd International Congress on Ceramics, [Verona, Italy, June 29 - July 4, 2008]. 2008;.
https://hdl.handle.net/21.15107/rcub_dais_3562 .

Mitić, Vojislav V., Pavlović, Vladimir B., Mančić, Dragan, Paunović, Vesna, Jordović, Branka, Živković, Ljiljana, "Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3" in Global roadmap for ceramics : ICC2 proceedings / 2nd International Congress on Ceramics, [Verona, Italy, June 29 - July 4, 2008] (2008),
https://hdl.handle.net/21.15107/rcub_dais_3562 .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Radulović, Aleksandra
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3574
AB  - Biodegradable polymers have become the materials of choice for a variety of biomedical applications. In particular, poly(DL-lactide-co-glycolide) nanoparticles have been studied as a material for drug delivery with the controlled release. In this paper we are describing a simple method for obtaining the system for targeted and controlled delivery of folic acid in the body. Folic acid was encapsulated into the polymer matrix by means of homogenization of aqueous and organic phases. Concentration of folic acid in water was varied in order to obtain nanoparticles with different ratios of poly(DL-lactide-co-glycolide) and folic acid. The particles were obtained by physicochemical solvent/non-solvent method with polyvinyl pyrrolidone as a surfactant. The obtained particles are non-agglomerated, uniform and with particles size in the nanometer range. The samples were characterized using Infrared Spectroscopy (IR), Ultraviolet Spectroscopy (UV), Zeta potential measurements, Scanning Electron Microscopy (SEM) and Stereological analysis. Copyright © 2008 American Scientific Publishers All rights reserved.
PB  - American Scientific Publishers
T2  - Journal of Biomedical Nanotechnology
T1  - Poly(DL-lactide-co-glycolide) nanospheres for the sustained release of folic acid
SP  - 349
EP  - 358
VL  - 4
IS  - 3
DO  - 10.1166/jbn.2008.321
UR  - https://hdl.handle.net/21.15107/rcub_dais_3574
ER  - 

@article{
author = "Stevanović, Magdalena and Radulović, Aleksandra and Jordović, Branka and Uskoković, Dragan",
year = "2008",
abstract = "Biodegradable polymers have become the materials of choice for a variety of biomedical applications. In particular, poly(DL-lactide-co-glycolide) nanoparticles have been studied as a material for drug delivery with the controlled release. In this paper we are describing a simple method for obtaining the system for targeted and controlled delivery of folic acid in the body. Folic acid was encapsulated into the polymer matrix by means of homogenization of aqueous and organic phases. Concentration of folic acid in water was varied in order to obtain nanoparticles with different ratios of poly(DL-lactide-co-glycolide) and folic acid. The particles were obtained by physicochemical solvent/non-solvent method with polyvinyl pyrrolidone as a surfactant. The obtained particles are non-agglomerated, uniform and with particles size in the nanometer range. The samples were characterized using Infrared Spectroscopy (IR), Ultraviolet Spectroscopy (UV), Zeta potential measurements, Scanning Electron Microscopy (SEM) and Stereological analysis. Copyright © 2008 American Scientific Publishers All rights reserved.",
publisher = "American Scientific Publishers",
journal = "Journal of Biomedical Nanotechnology",
title = "Poly(DL-lactide-co-glycolide) nanospheres for the sustained release of folic acid",
pages = "349-358",
volume = "4",
number = "3",
doi = "10.1166/jbn.2008.321",
url = "https://hdl.handle.net/21.15107/rcub_dais_3574"
}

Stevanović, M., Radulović, A., Jordović, B.,& Uskoković, D.. (2008). Poly(DL-lactide-co-glycolide) nanospheres for the sustained release of folic acid. in Journal of Biomedical Nanotechnology
American Scientific Publishers., 4(3), 349-358.
https://doi.org/10.1166/jbn.2008.321
https://hdl.handle.net/21.15107/rcub_dais_3574

Stevanović M, Radulović A, Jordović B, Uskoković D. Poly(DL-lactide-co-glycolide) nanospheres for the sustained release of folic acid. in Journal of Biomedical Nanotechnology. 2008;4(3):349-358.
doi:10.1166/jbn.2008.321
https://hdl.handle.net/21.15107/rcub_dais_3574 .

Stevanović, Magdalena, Radulović, Aleksandra, Jordović, Branka, Uskoković, Dragan, "Poly(DL-lactide-co-glycolide) nanospheres for the sustained release of folic acid" in Journal of Biomedical Nanotechnology, 4, no. 3 (2008):349-358,
https://doi.org/10.1166/jbn.2008.321 .,
https://hdl.handle.net/21.15107/rcub_dais_3574 .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/3569
AB  - Poly(dl-lactide-co-glycolide) powder composed of uniform particles with the mean particle size in the range of 110-170 nm was obtained from commercial granules. Ascorbic acid in different concentrations was encapsulated into the poly(dl-lactide-co-glycolide) particles. Degradation of the latter in terms of morphological changes in the physiological solution was followed. Within a period of 2 months, the particles completely degrade and all the ascorbic acid is released. The samples were characterized by ultraviolet spectroscopy and scanning electron microscopy. © 2008 The Authors.
PB  - Wiley
T2  - Journal of Microscopy
T1  - Morphological changes of poly(DI-lactide-co-glycolide) nano-particles containing ascorbic acid during in vitro degradation process
SP  - 511
EP  - 516
VL  - 232
IS  - 3
DO  - 10.1111/j.1365-2818.2008.02150.x
UR  - https://hdl.handle.net/21.15107/rcub_dais_3569
ER  - 

@article{
author = "Stevanović, Magdalena and Jordović, Branka and Uskoković, Dragan",
year = "2008",
abstract = "Poly(dl-lactide-co-glycolide) powder composed of uniform particles with the mean particle size in the range of 110-170 nm was obtained from commercial granules. Ascorbic acid in different concentrations was encapsulated into the poly(dl-lactide-co-glycolide) particles. Degradation of the latter in terms of morphological changes in the physiological solution was followed. Within a period of 2 months, the particles completely degrade and all the ascorbic acid is released. The samples were characterized by ultraviolet spectroscopy and scanning electron microscopy. © 2008 The Authors.",
publisher = "Wiley",
journal = "Journal of Microscopy",
title = "Morphological changes of poly(DI-lactide-co-glycolide) nano-particles containing ascorbic acid during in vitro degradation process",
pages = "511-516",
volume = "232",
number = "3",
doi = "10.1111/j.1365-2818.2008.02150.x",
url = "https://hdl.handle.net/21.15107/rcub_dais_3569"
}

Stevanović, M., Jordović, B.,& Uskoković, D.. (2008). Morphological changes of poly(DI-lactide-co-glycolide) nano-particles containing ascorbic acid during in vitro degradation process. in Journal of Microscopy
Wiley., 232(3), 511-516.
https://doi.org/10.1111/j.1365-2818.2008.02150.x
https://hdl.handle.net/21.15107/rcub_dais_3569

Stevanović M, Jordović B, Uskoković D. Morphological changes of poly(DI-lactide-co-glycolide) nano-particles containing ascorbic acid during in vitro degradation process. in Journal of Microscopy. 2008;232(3):511-516.
doi:10.1111/j.1365-2818.2008.02150.x
https://hdl.handle.net/21.15107/rcub_dais_3569 .

Stevanović, Magdalena, Jordović, Branka, Uskoković, Dragan, "Morphological changes of poly(DI-lactide-co-glycolide) nano-particles containing ascorbic acid during in vitro degradation process" in Journal of Microscopy, 232, no. 3 (2008):511-516,
https://doi.org/10.1111/j.1365-2818.2008.02150.x .,
https://hdl.handle.net/21.15107/rcub_dais_3569 .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/15267
AB  - This paper is covering new, simplistic method of obtaining the system for controlled delivery of the ascorbic acid. Copolymer poly (D,L-lactide-co-glycolide) (DLPLG) nanoparticles are produced using physical method with solvent/nonsolvent systems where obtained solutions were centrifuged. The encapsulation of the ascorbic acid in the polymer matrix is performed by homogenization of water and organic phases. Particles of the DLPLG with the different content of ascorbic acid have different morphological characteristics, that is, variable degree of uniformity, agglomeration, sizes, and spherical shaping. Mean sizes of nanoparticles, which contain DLPLG/ascorbic acid in the ratio 85/150%, were between 130 to 200 nm depending on which stereological parameters are considered (maximal diameters Dmax, feret X, or feret Y). By introducing up to 15% of ascorbic acid, the spherical shape, size, and uniformity of DLPLG particles are preserved. The samples were characterized by infrared spectroscopy, scanning electron microscopy, stereological analysis, and ultraviolet spectroscopy.
PB  - Hindawi
T2  - Journal of Biomedicine and Biotechnology
T1  - Preparation and Characterization of Poly(D,L-Lactide-co-Glycolide) Nanoparticles Containing Ascorbic Acid
SP  - 1
EP  - 8
VL  - 2007
DO  - 10.1155/2007/84965
UR  - https://hdl.handle.net/21.15107/rcub_dais_15267
ER  - 

@article{
author = "Stevanović, Magdalena and Jordović, Branka and Uskoković, Dragan",
year = "2007",
abstract = "This paper is covering new, simplistic method of obtaining the system for controlled delivery of the ascorbic acid. Copolymer poly (D,L-lactide-co-glycolide) (DLPLG) nanoparticles are produced using physical method with solvent/nonsolvent systems where obtained solutions were centrifuged. The encapsulation of the ascorbic acid in the polymer matrix is performed by homogenization of water and organic phases. Particles of the DLPLG with the different content of ascorbic acid have different morphological characteristics, that is, variable degree of uniformity, agglomeration, sizes, and spherical shaping. Mean sizes of nanoparticles, which contain DLPLG/ascorbic acid in the ratio 85/150%, were between 130 to 200 nm depending on which stereological parameters are considered (maximal diameters Dmax, feret X, or feret Y). By introducing up to 15% of ascorbic acid, the spherical shape, size, and uniformity of DLPLG particles are preserved. The samples were characterized by infrared spectroscopy, scanning electron microscopy, stereological analysis, and ultraviolet spectroscopy.",
publisher = "Hindawi",
journal = "Journal of Biomedicine and Biotechnology",
title = "Preparation and Characterization of Poly(D,L-Lactide-co-Glycolide) Nanoparticles Containing Ascorbic Acid",
pages = "1-8",
volume = "2007",
doi = "10.1155/2007/84965",
url = "https://hdl.handle.net/21.15107/rcub_dais_15267"
}

Stevanović, M., Jordović, B.,& Uskoković, D.. (2007). Preparation and Characterization of Poly(D,L-Lactide-co-Glycolide) Nanoparticles Containing Ascorbic Acid. in Journal of Biomedicine and Biotechnology
Hindawi., 2007, 1-8.
https://doi.org/10.1155/2007/84965
https://hdl.handle.net/21.15107/rcub_dais_15267

Stevanović M, Jordović B, Uskoković D. Preparation and Characterization of Poly(D,L-Lactide-co-Glycolide) Nanoparticles Containing Ascorbic Acid. in Journal of Biomedicine and Biotechnology. 2007;2007:1-8.
doi:10.1155/2007/84965
https://hdl.handle.net/21.15107/rcub_dais_15267 .

Stevanović, Magdalena, Jordović, Branka, Uskoković, Dragan, "Preparation and Characterization of Poly(D,L-Lactide-co-Glycolide) Nanoparticles Containing Ascorbic Acid" in Journal of Biomedicine and Biotechnology, 2007 (2007):1-8,
https://doi.org/10.1155/2007/84965 .,
https://hdl.handle.net/21.15107/rcub_dais_15267 .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Ignjatović, Nenad
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/14365
AB  - Fine particles made of poly(lactide-co-glycolide) (DLPLG) are excellent candidates for controlled release of delivering drugs and genes, because of their degradable nature. The preparation of DLPLG submicron spheres poses serious challenges that are not necessarily present when preparing macroparticles. In the present paper, DLPLG powder is produced with chemical method using solvent/non-solvent systems with subsequent centrifugation of the solution. The samples were characterized by infrared spectroscopy (IR), scanning electron microscopy (SEM) and stereological analysis. By changing the aging time with non-solvent and time and velocity of the centrifugal processing, it is possible to influence on the morphology and uniformity of the copolymer particles. Powder of the series with short aging time with non-solvent and longest time and velocity of the centrifugal processing has smallest particles and highest uniformity, where mean particles sizes were between 150 nm and 230 nm depending on which stereological parameters are considered (D(max), maximal diameters, feret X or feret Y).
PB  - Springer Science and Business Media LLC
T2  - Journal of Materials Science: Materials in Medicine
T1  - Stereological analysis of the poly-(dl-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing
SP  - 1339
EP  - 1344
VL  - 18
IS  - 7
DO  - 10.1007/s10856-007-0156-8
UR  - https://hdl.handle.net/21.15107/rcub_dais_14365
ER  - 

@article{
author = "Stevanović, Magdalena and Ignjatović, Nenad and Jordović, Branka and Uskoković, Dragan",
year = "2007",
abstract = "Fine particles made of poly(lactide-co-glycolide) (DLPLG) are excellent candidates for controlled release of delivering drugs and genes, because of their degradable nature. The preparation of DLPLG submicron spheres poses serious challenges that are not necessarily present when preparing macroparticles. In the present paper, DLPLG powder is produced with chemical method using solvent/non-solvent systems with subsequent centrifugation of the solution. The samples were characterized by infrared spectroscopy (IR), scanning electron microscopy (SEM) and stereological analysis. By changing the aging time with non-solvent and time and velocity of the centrifugal processing, it is possible to influence on the morphology and uniformity of the copolymer particles. Powder of the series with short aging time with non-solvent and longest time and velocity of the centrifugal processing has smallest particles and highest uniformity, where mean particles sizes were between 150 nm and 230 nm depending on which stereological parameters are considered (D(max), maximal diameters, feret X or feret Y).",
publisher = "Springer Science and Business Media LLC",
journal = "Journal of Materials Science: Materials in Medicine",
title = "Stereological analysis of the poly-(dl-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing",
pages = "1339-1344",
volume = "18",
number = "7",
doi = "10.1007/s10856-007-0156-8",
url = "https://hdl.handle.net/21.15107/rcub_dais_14365"
}

Stevanović, M., Ignjatović, N., Jordović, B.,& Uskoković, D.. (2007). Stereological analysis of the poly-(dl-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing. in Journal of Materials Science: Materials in Medicine
Springer Science and Business Media LLC., 18(7), 1339-1344.
https://doi.org/10.1007/s10856-007-0156-8
https://hdl.handle.net/21.15107/rcub_dais_14365

Stevanović M, Ignjatović N, Jordović B, Uskoković D. Stereological analysis of the poly-(dl-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing. in Journal of Materials Science: Materials in Medicine. 2007;18(7):1339-1344.
doi:10.1007/s10856-007-0156-8
https://hdl.handle.net/21.15107/rcub_dais_14365 .

Stevanović, Magdalena, Ignjatović, Nenad, Jordović, Branka, Uskoković, Dragan, "Stereological analysis of the poly-(dl-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing" in Journal of Materials Science: Materials in Medicine, 18, no. 7 (2007):1339-1344,
https://doi.org/10.1007/s10856-007-0156-8 .,
https://hdl.handle.net/21.15107/rcub_dais_14365 .

TY  - CONF
AU  - Jovanović, Ivana
AU  - Petković, Marijana
AU  - Jordović, Branka
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/6282
AB  - Worldwide, there is u currently considerable care for the development of
biodegradable microspheres as systems for controlled release of medicaments. The major
disadvantage of traditional administration routes of medicaments is the need for frequent
repetition. Encapsulation has been proven to be an effective vehicle for the controlled delivery
of various medicaments. The encapsulation efficiency and release kinetics of the medicaments
have been found to be dependent upon the size of the microspheres synthesized. The aim of this
study was to formulate microparticles from poly-dl-lactide (PDLLA) by modified precipitation
method. Bovine serum albumin (BSA) was used as a model protein for encapsulation. The
surfactant polyvinyl alcohol (PVA) was incorporated to increase encapsulation efficiency and to
achieve PDLLA spheres with desired size. The main focus was to study the effect of co-solvent
selection (methanol or ethanol), PVA concentration, chloroform-to-water ratio, the speed and
time of homogenization and solvent removal rate on the properties of microparticles. The
average size and morphology of microparticles varied substantially among these preparation
conditions. An increase in stirring rate and time of homogenization and concentration of
stabilizer agent were found to reduce moderately the size of microparticles. Other process
parameters had limited influence on particle size.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007
T1  - PDLLA microparticles containing BSA: effect of formulation variables on size distribution
SP  - 170
EP  - 170
UR  - https://hdl.handle.net/21.15107/rcub_dais_6282
ER  - 

@conference{
author = "Jovanović, Ivana and Petković, Marijana and Jordović, Branka and Ignjatović, Nenad and Uskoković, Dragan",
year = "2007",
abstract = "Worldwide, there is u currently considerable care for the development of
biodegradable microspheres as systems for controlled release of medicaments. The major
disadvantage of traditional administration routes of medicaments is the need for frequent
repetition. Encapsulation has been proven to be an effective vehicle for the controlled delivery
of various medicaments. The encapsulation efficiency and release kinetics of the medicaments
have been found to be dependent upon the size of the microspheres synthesized. The aim of this
study was to formulate microparticles from poly-dl-lactide (PDLLA) by modified precipitation
method. Bovine serum albumin (BSA) was used as a model protein for encapsulation. The
surfactant polyvinyl alcohol (PVA) was incorporated to increase encapsulation efficiency and to
achieve PDLLA spheres with desired size. The main focus was to study the effect of co-solvent
selection (methanol or ethanol), PVA concentration, chloroform-to-water ratio, the speed and
time of homogenization and solvent removal rate on the properties of microparticles. The
average size and morphology of microparticles varied substantially among these preparation
conditions. An increase in stirring rate and time of homogenization and concentration of
stabilizer agent were found to reduce moderately the size of microparticles. Other process
parameters had limited influence on particle size.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007",
title = "PDLLA microparticles containing BSA: effect of formulation variables on size distribution",
pages = "170-170",
url = "https://hdl.handle.net/21.15107/rcub_dais_6282"
}

Jovanović, I., Petković, M., Jordović, B., Ignjatović, N.,& Uskoković, D.. (2007). PDLLA microparticles containing BSA: effect of formulation variables on size distribution. in Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007
Belgrade : Institute of Technical Sciences of SASA., 170-170.
https://hdl.handle.net/21.15107/rcub_dais_6282

Jovanović I, Petković M, Jordović B, Ignjatović N, Uskoković D. PDLLA microparticles containing BSA: effect of formulation variables on size distribution. in Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007. 2007;:170-170.
https://hdl.handle.net/21.15107/rcub_dais_6282 .

Jovanović, Ivana, Petković, Marijana, Jordović, Branka, Ignjatović, Nenad, Uskoković, Dragan, "PDLLA microparticles containing BSA: effect of formulation variables on size distribution" in Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007 (2007):170-170,
https://hdl.handle.net/21.15107/rcub_dais_6282 .

TY  - JOUR
AU  - Stevanović, Magdalena
AU  - Savić, Jasmina
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/2741
AB  - Ascorbic acid (vitamin Q is essential for preserving optimal health and is used by the body for many purposes. The problem is that ascorbic acid easily decomposes into biologically inactive compounds making its use very limited in the field of pharmaceuticals, dermatological and cosmetics. By encapsulating the ascorbic acid into a polymer matrix it is assumed that its chemical instability can be overcome as well as higher, more efficient and equally distributed concentration throughout extended period of time can be achieved. This paper is describing the process of obtaining poly(DL-lactide-co-glycolide) (DLPLG) nanospheres (110-170 nm) using chemical method with solvent/non-solvent systems where obtained solutions have been centrifuged. The encapsulation of the ascorbic acid in the polymer matrix is performed by homogenisation of water and organic phases. Nanoparticles of the copolymer DLPLG with the different contents of the ascorbic acid have different morphological characteristics, i.e. variable degree of uniformity, agglomeration, sizes and spherical shaping. The degradation of the nanospheres of DLPLG, DLPLG/ascorbic acid nanoparticles and release rate of the ascorbic acid were studied for 8 weeks in a physiological solution (0.9% sodium chloride in water). The samples have been characterised by infrared spectroscopy (IR), scanning electron microscopy (SEM), stereological analysis and ultraviolet (UV) spectroscopy. (C) 2007 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces B: Biointerfaces
T1  - Fabrication, in vitro degradation and the release behaviours of poly(DL-lactide-co-glycolide) nanospheres containing ascorbic acid
SP  - 215
EP  - 223
VL  - 59
IS  - 2
DO  - 10.1016/j.colsurfb.2007.05.011
UR  - https://hdl.handle.net/21.15107/rcub_dais_2741
ER  - 

@article{
author = "Stevanović, Magdalena and Savić, Jasmina and Jordović, Branka and Uskoković, Dragan",
year = "2007",
abstract = "Ascorbic acid (vitamin Q is essential for preserving optimal health and is used by the body for many purposes. The problem is that ascorbic acid easily decomposes into biologically inactive compounds making its use very limited in the field of pharmaceuticals, dermatological and cosmetics. By encapsulating the ascorbic acid into a polymer matrix it is assumed that its chemical instability can be overcome as well as higher, more efficient and equally distributed concentration throughout extended period of time can be achieved. This paper is describing the process of obtaining poly(DL-lactide-co-glycolide) (DLPLG) nanospheres (110-170 nm) using chemical method with solvent/non-solvent systems where obtained solutions have been centrifuged. The encapsulation of the ascorbic acid in the polymer matrix is performed by homogenisation of water and organic phases. Nanoparticles of the copolymer DLPLG with the different contents of the ascorbic acid have different morphological characteristics, i.e. variable degree of uniformity, agglomeration, sizes and spherical shaping. The degradation of the nanospheres of DLPLG, DLPLG/ascorbic acid nanoparticles and release rate of the ascorbic acid were studied for 8 weeks in a physiological solution (0.9% sodium chloride in water). The samples have been characterised by infrared spectroscopy (IR), scanning electron microscopy (SEM), stereological analysis and ultraviolet (UV) spectroscopy. (C) 2007 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "Fabrication, in vitro degradation and the release behaviours of poly(DL-lactide-co-glycolide) nanospheres containing ascorbic acid",
pages = "215-223",
volume = "59",
number = "2",
doi = "10.1016/j.colsurfb.2007.05.011",
url = "https://hdl.handle.net/21.15107/rcub_dais_2741"
}

Stevanović, M., Savić, J., Jordović, B.,& Uskoković, D.. (2007). Fabrication, in vitro degradation and the release behaviours of poly(DL-lactide-co-glycolide) nanospheres containing ascorbic acid. in Colloids and Surfaces B: Biointerfaces, 59(2), 215-223.
https://doi.org/10.1016/j.colsurfb.2007.05.011
https://hdl.handle.net/21.15107/rcub_dais_2741

Stevanović M, Savić J, Jordović B, Uskoković D. Fabrication, in vitro degradation and the release behaviours of poly(DL-lactide-co-glycolide) nanospheres containing ascorbic acid. in Colloids and Surfaces B: Biointerfaces. 2007;59(2):215-223.
doi:10.1016/j.colsurfb.2007.05.011
https://hdl.handle.net/21.15107/rcub_dais_2741 .

Stevanović, Magdalena, Savić, Jasmina, Jordović, Branka, Uskoković, Dragan, "Fabrication, in vitro degradation and the release behaviours of poly(DL-lactide-co-glycolide) nanospheres containing ascorbic acid" in Colloids and Surfaces B: Biointerfaces, 59, no. 2 (2007):215-223,
https://doi.org/10.1016/j.colsurfb.2007.05.011 .,
https://hdl.handle.net/21.15107/rcub_dais_2741 .

TY  - CONF
AU  - Jovanović, Ivana
AU  - Petković, Marijana
AU  - Vujčić, Zoran
AU  - Jordović, Branka
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/319
AB  - Poster presented at the 9th Conference of the Yugoslav Materials Research Society - YUCOMAT 2007, Herceg Novi, Crna Gora, September 10-14, 2007.
T1  - PDLLA Microparticles Containing BSA: Effect of Formulation Variables on Size Distribution
UR  - https://hdl.handle.net/21.15107/rcub_dais_319
ER  - 

@conference{
author = "Jovanović, Ivana and Petković, Marijana and Vujčić, Zoran and Jordović, Branka and Ignjatović, Nenad and Uskoković, Dragan",
year = "2007",
abstract = "Poster presented at the 9th Conference of the Yugoslav Materials Research Society - YUCOMAT 2007, Herceg Novi, Crna Gora, September 10-14, 2007.",
title = "PDLLA Microparticles Containing BSA: Effect of Formulation Variables on Size Distribution",
url = "https://hdl.handle.net/21.15107/rcub_dais_319"
}

Jovanović, I., Petković, M., Vujčić, Z., Jordović, B., Ignjatović, N.,& Uskoković, D.. (2007). PDLLA Microparticles Containing BSA: Effect of Formulation Variables on Size Distribution. .
https://hdl.handle.net/21.15107/rcub_dais_319

Jovanović I, Petković M, Vujčić Z, Jordović B, Ignjatović N, Uskoković D. PDLLA Microparticles Containing BSA: Effect of Formulation Variables on Size Distribution. 2007;.
https://hdl.handle.net/21.15107/rcub_dais_319 .

Jovanović, Ivana, Petković, Marijana, Vujčić, Zoran, Jordović, Branka, Ignjatović, Nenad, Uskoković, Dragan, "PDLLA Microparticles Containing BSA: Effect of Formulation Variables on Size Distribution" (2007),
https://hdl.handle.net/21.15107/rcub_dais_319 .

TY  - CONF
AU  - Stevanović, Magdalena
AU  - Jordović, Branka
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/315
AB  - Poster presented at the 3rd Serbian Congress for Microscopy (3SCM-2007) Belgrade, September 25-28, 2007
T1  - Stereological analysis of DLPLG nanoparticles containing ascorbic acid during in vitro degradation process
UR  - https://hdl.handle.net/21.15107/rcub_dais_315
ER  - 

@conference{
author = "Stevanović, Magdalena and Jordović, Branka and Uskoković, Dragan",
year = "2007",
abstract = "Poster presented at the 3rd Serbian Congress for Microscopy (3SCM-2007) Belgrade, September 25-28, 2007",
title = "Stereological analysis of DLPLG nanoparticles containing ascorbic acid during in vitro degradation process",
url = "https://hdl.handle.net/21.15107/rcub_dais_315"
}

Stevanović, M., Jordović, B.,& Uskoković, D.. (2007). Stereological analysis of DLPLG nanoparticles containing ascorbic acid during in vitro degradation process. .
https://hdl.handle.net/21.15107/rcub_dais_315

Stevanović M, Jordović B, Uskoković D. Stereological analysis of DLPLG nanoparticles containing ascorbic acid during in vitro degradation process. 2007;.
https://hdl.handle.net/21.15107/rcub_dais_315 .

Stevanović, Magdalena, Jordović, Branka, Uskoković, Dragan, "Stereological analysis of DLPLG nanoparticles containing ascorbic acid during in vitro degradation process" (2007),
https://hdl.handle.net/21.15107/rcub_dais_315 .

TY  - CONF
AU  - Jovanović, Ivana
AU  - Stevanović, Magdalena
AU  - Mitrić, Miodrag
AU  - Jordović, Branka
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2006
UR  - https://dais.sanu.ac.rs/123456789/327
AB  - Poster presented at the 8th Conference of Yugoslav Materials Research Society – YUCOMAT 2006, Herceg Novi, Montenegro, September 4-8, 2006.
T1  - The Effect of Processing Parameters on Characteristics of Plla Microspheres
UR  - https://hdl.handle.net/21.15107/rcub_dais_327
ER  - 

@conference{
author = "Jovanović, Ivana and Stevanović, Magdalena and Mitrić, Miodrag and Jordović, Branka and Ignjatović, Nenad and Uskoković, Dragan",
year = "2006",
abstract = "Poster presented at the 8th Conference of Yugoslav Materials Research Society – YUCOMAT 2006, Herceg Novi, Montenegro, September 4-8, 2006.",
title = "The Effect of Processing Parameters on Characteristics of Plla Microspheres",
url = "https://hdl.handle.net/21.15107/rcub_dais_327"
}

Jovanović, I., Stevanović, M., Mitrić, M., Jordović, B., Ignjatović, N.,& Uskoković, D.. (2006). The Effect of Processing Parameters on Characteristics of Plla Microspheres. .
https://hdl.handle.net/21.15107/rcub_dais_327

Jovanović I, Stevanović M, Mitrić M, Jordović B, Ignjatović N, Uskoković D. The Effect of Processing Parameters on Characteristics of Plla Microspheres. 2006;.
https://hdl.handle.net/21.15107/rcub_dais_327 .

Jovanović, Ivana, Stevanović, Magdalena, Mitrić, Miodrag, Jordović, Branka, Ignjatović, Nenad, Uskoković, Dragan, "The Effect of Processing Parameters on Characteristics of Plla Microspheres" (2006),
https://hdl.handle.net/21.15107/rcub_dais_327 .