TY  - JOUR
AU  - Stanić, Vojislav
AU  - Janaćković, Đorđe T.
AU  - Dimitrijević, Suzana I.
AU  - Tanaskovic, Sladjana B.
AU  - Mitrić, Miodrag
AU  - Pavlović, Mirjana S.
AU  - Krstic, Aleksandra
AU  - Jovanović, Dragoljub
AU  - Raičević, Slavica
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4194
AB  - Monophase silver-doped hydroxyapatite (AgxCa10-x(PO4)(6)(OH)(2); 0.002 LT = x LT = 0.04) nanoparticles were prepared using a neutralization method and investigated with respect to potential medical applications. This method consists of dissolving Ag2O in solution of H3PO4, and the slow addition to suspension of Ca(OH)(2) was applied for the purpose of homogenous distribution of silver ions. Characterization studies from XRD, TEM and FTIR spectra showed that obtained crystals are monophase hydroxyapatites and that particles of all samples are of nano size, with average length of 70nm and about 15-25nm in diameter. Antimicrobial studies have demonstrated that all silver-doped hydroxyapatite samples exhibit excellent antimicrobial activity in vitro against the following pathogens: Staphylococcus aureus, Escherichia coli and Candida albicans. The hydroxyapatite sample with the highest content of silver has shown the highest antimicrobial activity; killed all cells of E. coli and brought to more than 99% reduction in viable counts of S. aureus and C. albicans. The atomic force microscopic studies illustrate that silver-doped hydroxyapatite sample causes considerable morphological changes of microorganism cells which might be the cause of cells death. Hemolysis ratios of the silver-doped hydroxyapatite samples were below 3%, indicating good blood compatibility and that are promising as biomaterials. Crown Copyright (C) 2010 Published by Elsevier B. V. All rights reserved.
T2  - Applied Surface Science
T1  - Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering
VL  - 257
IS  - 9
SP  - 4510
EP  - 4518
DO  - 10.1016/j.apsusc.2010.12.113
ER  - 

@article{
author = "Stanić, Vojislav and Janaćković, Đorđe T. and Dimitrijević, Suzana I. and Tanaskovic, Sladjana B. and Mitrić, Miodrag and Pavlović, Mirjana S. and Krstic, Aleksandra and Jovanović, Dragoljub and Raičević, Slavica",
year = "2011",
abstract = "Monophase silver-doped hydroxyapatite (AgxCa10-x(PO4)(6)(OH)(2); 0.002 LT = x LT = 0.04) nanoparticles were prepared using a neutralization method and investigated with respect to potential medical applications. This method consists of dissolving Ag2O in solution of H3PO4, and the slow addition to suspension of Ca(OH)(2) was applied for the purpose of homogenous distribution of silver ions. Characterization studies from XRD, TEM and FTIR spectra showed that obtained crystals are monophase hydroxyapatites and that particles of all samples are of nano size, with average length of 70nm and about 15-25nm in diameter. Antimicrobial studies have demonstrated that all silver-doped hydroxyapatite samples exhibit excellent antimicrobial activity in vitro against the following pathogens: Staphylococcus aureus, Escherichia coli and Candida albicans. The hydroxyapatite sample with the highest content of silver has shown the highest antimicrobial activity; killed all cells of E. coli and brought to more than 99% reduction in viable counts of S. aureus and C. albicans. The atomic force microscopic studies illustrate that silver-doped hydroxyapatite sample causes considerable morphological changes of microorganism cells which might be the cause of cells death. Hemolysis ratios of the silver-doped hydroxyapatite samples were below 3%, indicating good blood compatibility and that are promising as biomaterials. Crown Copyright (C) 2010 Published by Elsevier B. V. All rights reserved.",
journal = "Applied Surface Science",
title = "Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering",
volume = "257",
number = "9",
pages = "4510-4518",
doi = "10.1016/j.apsusc.2010.12.113"
}

Stanić, V., Janaćković, Đ. T., Dimitrijević, S. I., Tanaskovic, S. B., Mitrić, M., Pavlović, M. S., Krstic, A., Jovanović, D.,& Raičević, S.. (2011). Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering. in Applied Surface Science, 257(9), 4510-4518.
https://doi.org/10.1016/j.apsusc.2010.12.113

Stanić V, Janaćković ĐT, Dimitrijević SI, Tanaskovic SB, Mitrić M, Pavlović MS, Krstic A, Jovanović D, Raičević S. Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering. in Applied Surface Science. 2011;257(9):4510-4518.
doi:10.1016/j.apsusc.2010.12.113 .

Stanić, Vojislav, Janaćković, Đorđe T., Dimitrijević, Suzana I., Tanaskovic, Sladjana B., Mitrić, Miodrag, Pavlović, Mirjana S., Krstic, Aleksandra, Jovanović, Dragoljub, Raičević, Slavica, "Synthesis of antimicrobial monophase silver-doped hydroxyapatite nanopowders for bone tissue engineering" in Applied Surface Science, 257, no. 9 (2011):4510-4518,
https://doi.org/10.1016/j.apsusc.2010.12.113 . .

TY  - JOUR
AU  - Lazarević-Pašti, Tamara
AU  - Momić, Tatjana
AU  - Onjia, Antonije E.
AU  - Vujisić, Ljubodrag
AU  - Vasić, Vesna M.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4092
AB  - In order to improve the sensitivity of assays for inhibitors of the enzyme acetylcholine esterase (AChE), an effective method was developed for the conversion of the organophosphate pesticides (OPs) diazinon, malathion, chlorpyrifos, azinphos-methyl and phorate into more toxic inhibitors. This was accomplished by converting them from the thio form into their oxo form using the enzyme myeloperoxidase. The oxo forms, which are the only products of conversion, were determined by AChE bioassays, using either the free enzyme, or a flow injection analysis manifold with immobilized AChE and spectrophotometric detection. All modified OPs exhibited inhibitory power at ppb levels and within 10 min. The method is considered to represent an excellent means for improving the sensitivity of assays for determination of OPs.
T2  - Microchimica Acta
T1  - Myeloperoxidase-mediated oxidation of organophosphorus pesticides as a pre-step in their determination by AChE based bioanalytical methods
VL  - 170
IS  - 3-4
SP  - 289
EP  - 297
DO  - 10.1007/s00604-010-0324-2
ER  - 

@article{
author = "Lazarević-Pašti, Tamara and Momić, Tatjana and Onjia, Antonije E. and Vujisić, Ljubodrag and Vasić, Vesna M.",
year = "2010",
abstract = "In order to improve the sensitivity of assays for inhibitors of the enzyme acetylcholine esterase (AChE), an effective method was developed for the conversion of the organophosphate pesticides (OPs) diazinon, malathion, chlorpyrifos, azinphos-methyl and phorate into more toxic inhibitors. This was accomplished by converting them from the thio form into their oxo form using the enzyme myeloperoxidase. The oxo forms, which are the only products of conversion, were determined by AChE bioassays, using either the free enzyme, or a flow injection analysis manifold with immobilized AChE and spectrophotometric detection. All modified OPs exhibited inhibitory power at ppb levels and within 10 min. The method is considered to represent an excellent means for improving the sensitivity of assays for determination of OPs.",
journal = "Microchimica Acta",
title = "Myeloperoxidase-mediated oxidation of organophosphorus pesticides as a pre-step in their determination by AChE based bioanalytical methods",
volume = "170",
number = "3-4",
pages = "289-297",
doi = "10.1007/s00604-010-0324-2"
}

Lazarević-Pašti, T., Momić, T., Onjia, A. E., Vujisić, L.,& Vasić, V. M.. (2010). Myeloperoxidase-mediated oxidation of organophosphorus pesticides as a pre-step in their determination by AChE based bioanalytical methods. in Microchimica Acta, 170(3-4), 289-297.
https://doi.org/10.1007/s00604-010-0324-2

Lazarević-Pašti T, Momić T, Onjia AE, Vujisić L, Vasić VM. Myeloperoxidase-mediated oxidation of organophosphorus pesticides as a pre-step in their determination by AChE based bioanalytical methods. in Microchimica Acta. 2010;170(3-4):289-297.
doi:10.1007/s00604-010-0324-2 .

Lazarević-Pašti, Tamara, Momić, Tatjana, Onjia, Antonije E., Vujisić, Ljubodrag, Vasić, Vesna M., "Myeloperoxidase-mediated oxidation of organophosphorus pesticides as a pre-step in their determination by AChE based bioanalytical methods" in Microchimica Acta, 170, no. 3-4 (2010):289-297,
https://doi.org/10.1007/s00604-010-0324-2 . .

TY  - CONF
AU  - Rađenović, Branislav M.
AU  - Radmilovc-Radjenovic, M.
AU  - Petrovic, Z. Lj.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6584
AB  - A comprehensive simulation of etching profile evolution requires knowledge of the etching rates at all points of the profile surface during the etching process. Electrons do not contribute directly to the material removal, but they are the source, together with positive ions, of the profile charging that has many negative consequences on the final outcome of the process especially in the case of insulating material etching. The ability to simulate feature charging was added to the 3D level set profile evolution simulator described earlier. The ion and electron fluxes were computed along the feature using the Monte Carlo method. The surface potential profiles and electric field for the entire feature were generated by solving the Laplace equation using finite elements method. Calculations were performed in the case of a simplified model of Ar+/CF4 non-equilibrium plasma etching Of SiO2.
C3  - Materials Science Forum
T1  - Influence of charging on SiO2 etching profile evolution etched by fluorocarbon Plasmas
VL  - 555
SP  - 53
EP  - +
DO  - 10.4028/www.scientific.net/MSF.555.53
ER  - 

@conference{
author = "Rađenović, Branislav M. and Radmilovc-Radjenovic, M. and Petrovic, Z. Lj.",
year = "2007",
abstract = "A comprehensive simulation of etching profile evolution requires knowledge of the etching rates at all points of the profile surface during the etching process. Electrons do not contribute directly to the material removal, but they are the source, together with positive ions, of the profile charging that has many negative consequences on the final outcome of the process especially in the case of insulating material etching. The ability to simulate feature charging was added to the 3D level set profile evolution simulator described earlier. The ion and electron fluxes were computed along the feature using the Monte Carlo method. The surface potential profiles and electric field for the entire feature were generated by solving the Laplace equation using finite elements method. Calculations were performed in the case of a simplified model of Ar+/CF4 non-equilibrium plasma etching Of SiO2.",
journal = "Materials Science Forum",
title = "Influence of charging on SiO2 etching profile evolution etched by fluorocarbon Plasmas",
volume = "555",
pages = "53-+",
doi = "10.4028/www.scientific.net/MSF.555.53"
}

Rađenović, B. M., Radmilovc-Radjenovic, M.,& Petrovic, Z. Lj.. (2007). Influence of charging on SiO2 etching profile evolution etched by fluorocarbon Plasmas. in Materials Science Forum, 555, 53-+.
https://doi.org/10.4028/www.scientific.net/MSF.555.53

Rađenović BM, Radmilovc-Radjenovic M, Petrovic ZL. Influence of charging on SiO2 etching profile evolution etched by fluorocarbon Plasmas. in Materials Science Forum. 2007;555:53-+.
doi:10.4028/www.scientific.net/MSF.555.53 .

Rađenović, Branislav M., Radmilovc-Radjenovic, M., Petrovic, Z. Lj., "Influence of charging on SiO2 etching profile evolution etched by fluorocarbon Plasmas" in Materials Science Forum, 555 (2007):53-+,
https://doi.org/10.4028/www.scientific.net/MSF.555.53 . .

TY  - CONF
AU  - Gordić, Milan V.
AU  - Djordjevic, I. M.
AU  - Sekulić, Danijela R.
AU  - Petrovic, Z. S.
AU  - Stevanović, M. M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6699
AB  - The paper reports on an experimental study of the Mode I interlaminar fracture of unidirectional carbon fibers/epoxy resin composites. Mode I delamination strain energy release rate G(IC) was determined in double cantilever beam (DCB) test, before and after gamma irradiation at various doses. Glass transition temperature, T-g of epoxy matrix was determined from dynamic mechanical measurements. The delamination surfaces of tested coupons were observed by scanning electron microscopy. The variations in G(IC) values were correlated with irradiation doses, T-g values and the features of delamination microfractographs, as well as with the variation under irradiation of matrix or fibre/matrix dominated mechanical properties.
C3  - Materials Science Forum
T1  - Delamination strain energy release rate in carbon fiber/epoxy resin composites
VL  - 555
SP  - 515
EP  - +
DO  - 10.4028/www.scientific.net/MSF.555.515
ER  - 

@conference{
author = "Gordić, Milan V. and Djordjevic, I. M. and Sekulić, Danijela R. and Petrovic, Z. S. and Stevanović, M. M.",
year = "2007",
abstract = "The paper reports on an experimental study of the Mode I interlaminar fracture of unidirectional carbon fibers/epoxy resin composites. Mode I delamination strain energy release rate G(IC) was determined in double cantilever beam (DCB) test, before and after gamma irradiation at various doses. Glass transition temperature, T-g of epoxy matrix was determined from dynamic mechanical measurements. The delamination surfaces of tested coupons were observed by scanning electron microscopy. The variations in G(IC) values were correlated with irradiation doses, T-g values and the features of delamination microfractographs, as well as with the variation under irradiation of matrix or fibre/matrix dominated mechanical properties.",
journal = "Materials Science Forum",
title = "Delamination strain energy release rate in carbon fiber/epoxy resin composites",
volume = "555",
pages = "515-+",
doi = "10.4028/www.scientific.net/MSF.555.515"
}

Gordić, M. V., Djordjevic, I. M., Sekulić, D. R., Petrovic, Z. S.,& Stevanović, M. M.. (2007). Delamination strain energy release rate in carbon fiber/epoxy resin composites. in Materials Science Forum, 555, 515-+.
https://doi.org/10.4028/www.scientific.net/MSF.555.515

Gordić MV, Djordjevic IM, Sekulić DR, Petrovic ZS, Stevanović MM. Delamination strain energy release rate in carbon fiber/epoxy resin composites. in Materials Science Forum. 2007;555:515-+.
doi:10.4028/www.scientific.net/MSF.555.515 .

Gordić, Milan V., Djordjevic, I. M., Sekulić, Danijela R., Petrovic, Z. S., Stevanović, M. M., "Delamination strain energy release rate in carbon fiber/epoxy resin composites" in Materials Science Forum, 555 (2007):515-+,
https://doi.org/10.4028/www.scientific.net/MSF.555.515 . .