TY  - CONF
AU  - Mladenović, Ivana
AU  - Đorović-Amanović, Jovana
AU  - Nikolić, Nebojša
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
AU  - Lamovec, Jelena
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4410
AB  - Fine-grained nickel coatings were electrodeposited by direct current (dc) regime onto different substrates: polycrystalline cold-rolled copper, polycrystalline brass and single crystal (100)-oriented silicon. These composite structures belong to different type of laminated composite systems. The influence of the substrate material and coating plating parameters on microstructural and mechanical properties, such as hardness and adhesion, was characterized by the Vickers microindentation test for different loads. Above critical indentation depth (usually around 10% of the coating thickness), the measured hardness is the so-called “composite hardness”, because the substrate participates in the plastic deformations during indentation. Three composite hardness models (Korsunsky, Chicot-Lesage and Chen-Gao), constructed on different principles, were chosen for fitting the experimental results in order to determine the coating hardness and the critical reduced depth as the adhesion parameter. The coating hardness is mainly influenced by the current density, because increase in current density leads to decrease in grain size and increase in coating hardness. The critical reduced depth as the parameter of adhesion depends on the substrate material.
PB  - Belgrade : Academy of Criminalistic and Police Studies
C3  - Thematic conference proceedings of international significance - International Scientific Conference
T1  - Analysis and interpretation of the micromechanical properties measurements of electrodeposited nickel coatings on different substrates.
EP  - 665
IS  - 1
SP  - 655
VL  - 0
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4410
ER  - 

@conference{
author = "Mladenović, Ivana and Đorović-Amanović, Jovana and Nikolić, Nebojša and Vasiljević-Radović, Dana and Radojević, Vesna and Lamovec, Jelena",
year = "2020",
abstract = "Fine-grained nickel coatings were electrodeposited by direct current (dc) regime onto different substrates: polycrystalline cold-rolled copper, polycrystalline brass and single crystal (100)-oriented silicon. These composite structures belong to different type of laminated composite systems. The influence of the substrate material and coating plating parameters on microstructural and mechanical properties, such as hardness and adhesion, was characterized by the Vickers microindentation test for different loads. Above critical indentation depth (usually around 10% of the coating thickness), the measured hardness is the so-called “composite hardness”, because the substrate participates in the plastic deformations during indentation. Three composite hardness models (Korsunsky, Chicot-Lesage and Chen-Gao), constructed on different principles, were chosen for fitting the experimental results in order to determine the coating hardness and the critical reduced depth as the adhesion parameter. The coating hardness is mainly influenced by the current density, because increase in current density leads to decrease in grain size and increase in coating hardness. The critical reduced depth as the parameter of adhesion depends on the substrate material.",
publisher = "Belgrade : Academy of Criminalistic and Police Studies",
journal = "Thematic conference proceedings of international significance - International Scientific Conference",
title = "Analysis and interpretation of the micromechanical properties measurements of electrodeposited nickel coatings on different substrates.",
pages = "665-655",
number = "1",
volume = "0",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4410"
}

Mladenović, I., Đorović-Amanović, J., Nikolić, N., Vasiljević-Radović, D., Radojević, V.,& Lamovec, J.. (2020). Analysis and interpretation of the micromechanical properties measurements of electrodeposited nickel coatings on different substrates.. in Thematic conference proceedings of international significance - International Scientific Conference
Belgrade : Academy of Criminalistic and Police Studies., 0(1), 655-665.
https://hdl.handle.net/21.15107/rcub_technorep_4410

Mladenović I, Đorović-Amanović J, Nikolić N, Vasiljević-Radović D, Radojević V, Lamovec J. Analysis and interpretation of the micromechanical properties measurements of electrodeposited nickel coatings on different substrates.. in Thematic conference proceedings of international significance - International Scientific Conference. 2020;0(1):655-665.
https://hdl.handle.net/21.15107/rcub_technorep_4410 .

Mladenović, Ivana, Đorović-Amanović, Jovana, Nikolić, Nebojša, Vasiljević-Radović, Dana, Radojević, Vesna, Lamovec, Jelena, "Analysis and interpretation of the micromechanical properties measurements of electrodeposited nickel coatings on different substrates." in Thematic conference proceedings of international significance - International Scientific Conference, 0, no. 1 (2020):655-665,
https://hdl.handle.net/21.15107/rcub_technorep_4410 .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Nikolić, Nebojša
AU  - Andrić, Stevan
AU  - Obradov, Marko
AU  - Radojević, Vesna
AU  - Vasiljević-Radović, Dana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4420
AB  - Copper coatings are produced on silicon wafer by electrodeposition (ED) in pulsating current (PC) regime. Electrodeposition was performed at various current density amplitudes in the range of 80−140 mA cm-2, frequency in the range of 30−100 Hz and coating thickness in the range of 10−60 μm. The resulting composite systems consist of monolayered copper films electrodeposited from sulfate bath on Si wafers with sputtered layers of Cr/Au. Roughness measurements were performed to evaluate properties of the copper coating surface. The coating roughness (R) was measured using Atomic Force Microscope in contact mode. The software Gwyddion was used for determination an average roughness parameter (Ra). After that (Artificial Neural Network-ANN) model was used to study the relationship between the parameters of electrodeposition process and roughness of copper coatings. The influence of experimental values: amplitude current density, frequency and thickness of coating on the surface roughness will be highlighted. Response surface methodology (RSM) was utilized to improve the correction between Ra and input parameters. Finally, the results of the average roughness (experimental and predicted) were used to estimate the new value of (Ra) of copper for each variation of the input parameters and compared capability of ANN and regression analysis for surface roughness generated under different electrochemical conditions. The coefficient of determination was found 92% for ANN and 93% for regression analysis.
PB  - Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering
C3  - Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETR
T1  - Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4420
ER  - 

@conference{
author = "Mladenović, Ivana and Lamovec, Jelena and Nikolić, Nebojša and Andrić, Stevan and Obradov, Marko and Radojević, Vesna and Vasiljević-Radović, Dana",
year = "2020",
abstract = "Copper coatings are produced on silicon wafer by electrodeposition (ED) in pulsating current (PC) regime. Electrodeposition was performed at various current density amplitudes in the range of 80−140 mA cm-2, frequency in the range of 30−100 Hz and coating thickness in the range of 10−60 μm. The resulting composite systems consist of monolayered copper films electrodeposited from sulfate bath on Si wafers with sputtered layers of Cr/Au. Roughness measurements were performed to evaluate properties of the copper coating surface. The coating roughness (R) was measured using Atomic Force Microscope in contact mode. The software Gwyddion was used for determination an average roughness parameter (Ra). After that (Artificial Neural Network-ANN) model was used to study the relationship between the parameters of electrodeposition process and roughness of copper coatings. The influence of experimental values: amplitude current density, frequency and thickness of coating on the surface roughness will be highlighted. Response surface methodology (RSM) was utilized to improve the correction between Ra and input parameters. Finally, the results of the average roughness (experimental and predicted) were used to estimate the new value of (Ra) of copper for each variation of the input parameters and compared capability of ANN and regression analysis for surface roughness generated under different electrochemical conditions. The coefficient of determination was found 92% for ANN and 93% for regression analysis.",
publisher = "Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering",
journal = "Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETR",
title = "Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4420"
}

Mladenović, I., Lamovec, J., Nikolić, N., Andrić, S., Obradov, M., Radojević, V.,& Vasiljević-Radović, D.. (2020). Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings. in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETR
Belgrade: ETRAN – Society for electronics, telecommunication, computing, automatics and nuclear angineering..
https://hdl.handle.net/21.15107/rcub_technorep_4420

Mladenović I, Lamovec J, Nikolić N, Andrić S, Obradov M, Radojević V, Vasiljević-Radović D. Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings. in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETR. 2020;.
https://hdl.handle.net/21.15107/rcub_technorep_4420 .

Mladenović, Ivana, Lamovec, Jelena, Nikolić, Nebojša, Andrić, Stevan, Obradov, Marko, Radojević, Vesna, Vasiljević-Radović, Dana, "Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Roughness of Cu coatings" in Proceedings - 7th International Conference on Electrical, Electronic and Computing Engineering IcETR (2020),
https://hdl.handle.net/21.15107/rcub_technorep_4420 .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Vasilić, Rastko
AU  - Radojević, Vesna
AU  - Nikolić, Nebojša
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4539
AB  - Copper electrodeposition on (111)-oriented Si substrate was performed by the pulsating current (PC) regime at various average current densities in the range of 15-70 mAcm(-2), obtained by varying either the frequency (30, 50, 80 and 100 Hz for the current density amplitude of 100 mAcm(-2)) or the current density amplitude (120 and 140 mAcm(-2) at 100 Hz). The produced Cu coatings were examined by SEM, AFM and XRD techniques. The morphology of the coatings changed from those with large grains to fine-grained and globular, while the crystal structure changed from the strong (220) to the strong (111) preferred orientation by increasing the average current density. The mechanical characteristics of coatings were examined using Vickers micro-indentation tests, applying the Chicot-Lesage (C-L) composite hardness model for the analysis of microhardness. The maximum microhardness was obtained for the Cu coating produced at an average current density of 50 mAcm(-2), with a current density amplitude of 100 mAcm(-2) and a frequency of 100 Hz. This copper coating was fine-grained and showed the smallest roughness in relation to the other coatings, and it was obtained in the mixed activation-diffusion control between the end of the effect of the activation control and the beginning of the dominant effect of diffusion control.
PB  - MDPI, Basel
T2  - Metals
T1  - Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)
IS  - 4
VL  - 10
DO  - 10.3390/met10040488
ER  - 

@article{
author = "Mladenović, Ivana and Lamovec, Jelena and Vasiljević-Radović, Dana and Vasilić, Rastko and Radojević, Vesna and Nikolić, Nebojša",
year = "2020",
abstract = "Copper electrodeposition on (111)-oriented Si substrate was performed by the pulsating current (PC) regime at various average current densities in the range of 15-70 mAcm(-2), obtained by varying either the frequency (30, 50, 80 and 100 Hz for the current density amplitude of 100 mAcm(-2)) or the current density amplitude (120 and 140 mAcm(-2) at 100 Hz). The produced Cu coatings were examined by SEM, AFM and XRD techniques. The morphology of the coatings changed from those with large grains to fine-grained and globular, while the crystal structure changed from the strong (220) to the strong (111) preferred orientation by increasing the average current density. The mechanical characteristics of coatings were examined using Vickers micro-indentation tests, applying the Chicot-Lesage (C-L) composite hardness model for the analysis of microhardness. The maximum microhardness was obtained for the Cu coating produced at an average current density of 50 mAcm(-2), with a current density amplitude of 100 mAcm(-2) and a frequency of 100 Hz. This copper coating was fine-grained and showed the smallest roughness in relation to the other coatings, and it was obtained in the mixed activation-diffusion control between the end of the effect of the activation control and the beginning of the dominant effect of diffusion control.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)",
number = "4",
volume = "10",
doi = "10.3390/met10040488"
}

Mladenović, I., Lamovec, J., Vasiljević-Radović, D., Vasilić, R., Radojević, V.,& Nikolić, N.. (2020). Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111). in Metals
MDPI, Basel., 10(4).
https://doi.org/10.3390/met10040488

Mladenović I, Lamovec J, Vasiljević-Radović D, Vasilić R, Radojević V, Nikolić N. Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111). in Metals. 2020;10(4).
doi:10.3390/met10040488 .

Mladenović, Ivana, Lamovec, Jelena, Vasiljević-Radović, Dana, Vasilić, Rastko, Radojević, Vesna, Nikolić, Nebojša, "Morphology, Structure and Mechanical Properties of Copper Coatings Electrodeposited by Pulsating Current (PC) Regime on Si(111)" in Metals, 10, no. 4 (2020),
https://doi.org/10.3390/met10040488 . .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Vasiljević-Radović, Dana
AU  - Radojević, Vesna
AU  - Nikolić, Nebojša
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4405
AB  - Mechanical features of the Cu coatings produced by the pulsating current (PC) regime on Si(111) substrate have been investigated. The Cu coatings were electrodeposited by varying duty cycle (15-50 %) and keeping the current density amplitude constant (100 mA cm(-2)), and by keeping duty cycle constant (50 %) but varying the current density amplitude value (80-120 mA cm(-2)). The scanning electron microscopy (SEM) and optical microscopy (OM) techniques showed that morphology of the coatings changed with increasing the duty cycle from those with large and well defined grains to uniform and compact fine-grained coatings. The Vickers microindentation technique was used for an examination of hardness applying the Chen-Gao (C-G) composite hardness model and indentation creep features of the Cu coatings. The obtained values of hardness for the Cu coatings on Si(111) in the 0.9069-1.5079 GPa range indicated the successful implementation of the C-G model for this "soft film on hard substrate" composite system. The obtained stress exponents ranging from 2.79 to 5.29 indicated that creep mechanism changed from grain boundary sliding to both dislocation climbs and dislocation creep with decreasing duty cycle values. The maximum hardness and minimum stress exponent was obtained for the fine-grained Cu coating produced with a duty cycle of 50 % and the current density amplitude of 100 mA cm(-2), indicating that its plastic deformation during microindentation was primarily caused by grain boundary sliding. Optimization of process formation and mechanical features of the Cu coatings was made using Response Surface Methodology (RSM), and error of 3.2 % showed a good agreement between predicted and measured values.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate
EP  - 12191
IS  - 11
SP  - 12173
VL  - 15
DO  - 10.20964/2020.12.01
ER  - 

@article{
author = "Mladenović, Ivana and Lamovec, Jelena and Vasiljević-Radović, Dana and Radojević, Vesna and Nikolić, Nebojša",
year = "2020",
abstract = "Mechanical features of the Cu coatings produced by the pulsating current (PC) regime on Si(111) substrate have been investigated. The Cu coatings were electrodeposited by varying duty cycle (15-50 %) and keeping the current density amplitude constant (100 mA cm(-2)), and by keeping duty cycle constant (50 %) but varying the current density amplitude value (80-120 mA cm(-2)). The scanning electron microscopy (SEM) and optical microscopy (OM) techniques showed that morphology of the coatings changed with increasing the duty cycle from those with large and well defined grains to uniform and compact fine-grained coatings. The Vickers microindentation technique was used for an examination of hardness applying the Chen-Gao (C-G) composite hardness model and indentation creep features of the Cu coatings. The obtained values of hardness for the Cu coatings on Si(111) in the 0.9069-1.5079 GPa range indicated the successful implementation of the C-G model for this "soft film on hard substrate" composite system. The obtained stress exponents ranging from 2.79 to 5.29 indicated that creep mechanism changed from grain boundary sliding to both dislocation climbs and dislocation creep with decreasing duty cycle values. The maximum hardness and minimum stress exponent was obtained for the fine-grained Cu coating produced with a duty cycle of 50 % and the current density amplitude of 100 mA cm(-2), indicating that its plastic deformation during microindentation was primarily caused by grain boundary sliding. Optimization of process formation and mechanical features of the Cu coatings was made using Response Surface Methodology (RSM), and error of 3.2 % showed a good agreement between predicted and measured values.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate",
pages = "12191-12173",
number = "11",
volume = "15",
doi = "10.20964/2020.12.01"
}

Mladenović, I., Lamovec, J., Vasiljević-Radović, D., Radojević, V.,& Nikolić, N.. (2020). Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 15(11), 12173-12191.
https://doi.org/10.20964/2020.12.01

Mladenović I, Lamovec J, Vasiljević-Radović D, Radojević V, Nikolić N. Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate. in International Journal of Electrochemical Science. 2020;15(11):12173-12191.
doi:10.20964/2020.12.01 .

Mladenović, Ivana, Lamovec, Jelena, Vasiljević-Radović, Dana, Radojević, Vesna, Nikolić, Nebojša, "Mechanical features of copper coatings electrodeposited by the pulsating current (PC) regime on Si(111) substrate" in International Journal of Electrochemical Science, 15, no. 11 (2020):12173-12191,
https://doi.org/10.20964/2020.12.01 . .

TY  - JOUR
AU  - Avramov-Ivić, Milka
AU  - Lović, Jelena
AU  - Stevanović, Sanja
AU  - Nikolić, Nebojša
AU  - Trišović, Nemanja
AU  - Lađarević, Jelena
AU  - Vuković, Dragan
AU  - Drmanić, Saša
AU  - Mladenović, Aleksandar R.
AU  - Jadranin, Milka
AU  - Petrović, Slobodan
AU  - Mijin, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4306
AB  - Esomeprazole is the most effective of the proton-pump inhibitors for the acid-related diseases and at first was examined for the electroanalytical purposes. The drug standard and as a content of injection powder was investigated by cyclic voltammetry (CV) and quantitatively determined using square wave voltammetry (SWV) via its electrooxidation at Au electrode in 0.05 M NaHCO3. SWV showed a linear dependency of the anodic peak currents vs. esomeprazole standard concentrations in the range from 3.0 to 500 mu g mL(-1) with the values of limit of detection (LOD) and limit of quantification (LOQ): 1.4 and 4.6 mu g mL(-1), respectively. Using the constructed and validated calibration curve, the values of unknown esomeprazole concentrations in injection powder and in human serum spiked with standard were determined. Before the electrochemical oxidation, it was shown by atomic force microscopy (AFM) that the small esomeprazole islands formed inside holes were visible and their diameter was about 200 nm attributed to physico-chemical characteristics of esomeprazole. After the electrochemical oxidation, the morphology of esomeprazole standard on Au surface was completely changed and composed of spherical particles in a diameter between 200 and 600 nm. With esomeprazole suspended in human serum, the process of crystallization partly occurred in the form of spherical grains with the average size of these grains was about 4 gm. The analysis at the macro level done by the optical microscopy (OM) confirmed this opinion. The study of esomeprazole degradation showed that at Au electrode, after 3 h of cycling, a neglectable amount of the esomeprazole was changed. Using IrOx electrode under directed stress conditions, its almost complete degradation was realized after 3 h confirmed by high performance liquid chromatography (HPLC). Total organic carbon (TOC) analysis showed that 95% of esomeprazole was mineralized. The HPLC and Liquid chromatography-mass spectrometry (LC-MS) study revealed the formation of 4-hydroxy omeprazole sulphide, 4-hydroxy omeprazole sulphone, esomeprazole sulphone and methylated esomeprazole.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Electrochemical behavior of esomeprazole: Its determination at Au electrode as standard and in injection powder combined with the study of its degradation
VL  - 848
DO  - 10.1016/j.jelechem.2019.113303
ER  - 

@article{
author = "Avramov-Ivić, Milka and Lović, Jelena and Stevanović, Sanja and Nikolić, Nebojša and Trišović, Nemanja and Lađarević, Jelena and Vuković, Dragan and Drmanić, Saša and Mladenović, Aleksandar R. and Jadranin, Milka and Petrović, Slobodan and Mijin, Dušan",
year = "2019",
abstract = "Esomeprazole is the most effective of the proton-pump inhibitors for the acid-related diseases and at first was examined for the electroanalytical purposes. The drug standard and as a content of injection powder was investigated by cyclic voltammetry (CV) and quantitatively determined using square wave voltammetry (SWV) via its electrooxidation at Au electrode in 0.05 M NaHCO3. SWV showed a linear dependency of the anodic peak currents vs. esomeprazole standard concentrations in the range from 3.0 to 500 mu g mL(-1) with the values of limit of detection (LOD) and limit of quantification (LOQ): 1.4 and 4.6 mu g mL(-1), respectively. Using the constructed and validated calibration curve, the values of unknown esomeprazole concentrations in injection powder and in human serum spiked with standard were determined. Before the electrochemical oxidation, it was shown by atomic force microscopy (AFM) that the small esomeprazole islands formed inside holes were visible and their diameter was about 200 nm attributed to physico-chemical characteristics of esomeprazole. After the electrochemical oxidation, the morphology of esomeprazole standard on Au surface was completely changed and composed of spherical particles in a diameter between 200 and 600 nm. With esomeprazole suspended in human serum, the process of crystallization partly occurred in the form of spherical grains with the average size of these grains was about 4 gm. The analysis at the macro level done by the optical microscopy (OM) confirmed this opinion. The study of esomeprazole degradation showed that at Au electrode, after 3 h of cycling, a neglectable amount of the esomeprazole was changed. Using IrOx electrode under directed stress conditions, its almost complete degradation was realized after 3 h confirmed by high performance liquid chromatography (HPLC). Total organic carbon (TOC) analysis showed that 95% of esomeprazole was mineralized. The HPLC and Liquid chromatography-mass spectrometry (LC-MS) study revealed the formation of 4-hydroxy omeprazole sulphide, 4-hydroxy omeprazole sulphone, esomeprazole sulphone and methylated esomeprazole.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrochemical behavior of esomeprazole: Its determination at Au electrode as standard and in injection powder combined with the study of its degradation",
volume = "848",
doi = "10.1016/j.jelechem.2019.113303"
}

Avramov-Ivić, M., Lović, J., Stevanović, S., Nikolić, N., Trišović, N., Lađarević, J., Vuković, D., Drmanić, S., Mladenović, A. R., Jadranin, M., Petrović, S.,& Mijin, D.. (2019). Electrochemical behavior of esomeprazole: Its determination at Au electrode as standard and in injection powder combined with the study of its degradation. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 848.
https://doi.org/10.1016/j.jelechem.2019.113303

Avramov-Ivić M, Lović J, Stevanović S, Nikolić N, Trišović N, Lađarević J, Vuković D, Drmanić S, Mladenović AR, Jadranin M, Petrović S, Mijin D. Electrochemical behavior of esomeprazole: Its determination at Au electrode as standard and in injection powder combined with the study of its degradation. in Journal of Electroanalytical Chemistry. 2019;848.
doi:10.1016/j.jelechem.2019.113303 .

Avramov-Ivić, Milka, Lović, Jelena, Stevanović, Sanja, Nikolić, Nebojša, Trišović, Nemanja, Lađarević, Jelena, Vuković, Dragan, Drmanić, Saša, Mladenović, Aleksandar R., Jadranin, Milka, Petrović, Slobodan, Mijin, Dušan, "Electrochemical behavior of esomeprazole: Its determination at Au electrode as standard and in injection powder combined with the study of its degradation" in Journal of Electroanalytical Chemistry, 848 (2019),
https://doi.org/10.1016/j.jelechem.2019.113303 . .

TY  - JOUR
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Jović, Vesna
AU  - Obradov, Marko
AU  - Vasiljević-Radović, Dana
AU  - Nikolić, Nebojša
AU  - Radojević, Vesna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4069
AB  - The mechanical properties of systems consisting of copper coatings electrodeposited on both brass sheet (BS) and thick electrodeposited nickel coating (ED Ni) substrates have been investigated. The electrodeposition of copper coatings was performed with and without the ultrasound assistance. The ultrasound application decreases root mean square (RMS) roughness of deposited Cu coating on both applied substrates, as obtained from non-contact AFM measurement. The coating roughness is highly dependent on the substrate roughness, being the smallest for the Cu coatings deposited on ED Ni substrate with the ultrasound mixing. The hardness and adhesion properties were characterized using the Vickers microindentation test. Model of Korsunsky was applied to the experimental data for determination the film hardness and the model of Chen-Gao was used for the adhesion evaluation. The introduction of ultrasonic agitation caused the changes in the film microstructure, and consequently in the mechanical properties. The copper coatings on both substrates, have higher hardness when deposited from electrolyte with ultrasound agitation. Although the type of the substrate has the major influence on the adhesion strength, it can be said that Cu electrodeposition with ultrasonic mixing contributes to an increase in adhesion.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Mechanical characterization of copper coatings electrodeposited onto different substrates with and without ultrasound assistance
EP  - 741
IS  - 7
SP  - 729
VL  - 84
DO  - 10.2298/JSC181003023M
ER  - 

@article{
author = "Mladenović, Ivana and Lamovec, Jelena and Jović, Vesna and Obradov, Marko and Vasiljević-Radović, Dana and Nikolić, Nebojša and Radojević, Vesna",
year = "2019",
abstract = "The mechanical properties of systems consisting of copper coatings electrodeposited on both brass sheet (BS) and thick electrodeposited nickel coating (ED Ni) substrates have been investigated. The electrodeposition of copper coatings was performed with and without the ultrasound assistance. The ultrasound application decreases root mean square (RMS) roughness of deposited Cu coating on both applied substrates, as obtained from non-contact AFM measurement. The coating roughness is highly dependent on the substrate roughness, being the smallest for the Cu coatings deposited on ED Ni substrate with the ultrasound mixing. The hardness and adhesion properties were characterized using the Vickers microindentation test. Model of Korsunsky was applied to the experimental data for determination the film hardness and the model of Chen-Gao was used for the adhesion evaluation. The introduction of ultrasonic agitation caused the changes in the film microstructure, and consequently in the mechanical properties. The copper coatings on both substrates, have higher hardness when deposited from electrolyte with ultrasound agitation. Although the type of the substrate has the major influence on the adhesion strength, it can be said that Cu electrodeposition with ultrasonic mixing contributes to an increase in adhesion.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Mechanical characterization of copper coatings electrodeposited onto different substrates with and without ultrasound assistance",
pages = "741-729",
number = "7",
volume = "84",
doi = "10.2298/JSC181003023M"
}

Mladenović, I., Lamovec, J., Jović, V., Obradov, M., Vasiljević-Radović, D., Nikolić, N.,& Radojević, V.. (2019). Mechanical characterization of copper coatings electrodeposited onto different substrates with and without ultrasound assistance. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 84(7), 729-741.
https://doi.org/10.2298/JSC181003023M

Mladenović I, Lamovec J, Jović V, Obradov M, Vasiljević-Radović D, Nikolić N, Radojević V. Mechanical characterization of copper coatings electrodeposited onto different substrates with and without ultrasound assistance. in Journal of the Serbian Chemical Society. 2019;84(7):729-741.
doi:10.2298/JSC181003023M .

Mladenović, Ivana, Lamovec, Jelena, Jović, Vesna, Obradov, Marko, Vasiljević-Radović, Dana, Nikolić, Nebojša, Radojević, Vesna, "Mechanical characterization of copper coatings electrodeposited onto different substrates with and without ultrasound assistance" in Journal of the Serbian Chemical Society, 84, no. 7 (2019):729-741,
https://doi.org/10.2298/JSC181003023M . .

TY  - CONF
AU  - Avramov Ivić, Milka
AU  - Lović, Jelena
AU  - Lađarević, Jelena
AU  - Mijin, Dušan
AU  - Stevanović, Sanja
AU  - Nikolić, Nebojša
AU  - Vuković, Dragan
AU  - Petrović, Slobodan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6746
AB  - Esomeprazole has been shown to be the most effective oral PPI for controlling intragastric pH. The persistence of esomeprasole in environmental systems could be solved by different types of its degradation. In this work electrocatalytic degradation of esomeprasole has been investigated in the presence of sodium sulfate and sodium chloride using IrOx electrode and was monitored using UV-Vis spectrophotometer at 303 nm. Also the electro degradation process was examined and on Au electrode. NanoScope III A (Veeco, USA) microscope was used to study the morphology of Esomeprazole on the gold surface by atomic force microscopy. By optical microscopy the
morphology of Esomeprazole dissolved in human serum on the gold surface was studied as well.
AB  - Ezomeprazol je poznat kao najefikasniji lek , tj. inhibitor protonske pumpe u
kontroli intragastricne vrednosti pH. Njegovo prisustvo u vodenim tokovima i
zemljištu se resava osmišljavanjem novih postupaka degradacije. U ovom radu
elektrokatalitiþka degradacija ezomeprazola je prouþavana u natrijum sulfatu i
natrijum hloridu na IrOx elektrodi. Reakcija je praüena korišüenjem UV-Vis
spektrofotometra na 303 nm. Takoÿe je prouþavana degradacija ezomeprazola
na elektrodi od zlata. NanoScope III A (Veeco, USA) mikroskop je korišüen u
prouþavanju morfologije ezomeprazola na površini eelektrode od zlata
mikroskopijom mneÿuatomskih sila. Optiþkom mikroskopijom je ispitivana
morfologija ezomeprazola na površini eelektrode od zlata u prisustvu humanog
seruma.
PB  - Podgorica : Crnogorsko društvo za koroziju, zaštitu materijala i zaštitu životne sredine
C3  - Knjiga radova / Četvrti Međunarodni simpozijum o koroziji i zaštiti materijala, životnoj sredini i zaštiti od požara = Proceedings / Fourth International symposium on corrosion and materials protection, environmental protection and protection against fire, Bar, 18-21. septembar 2018. godine
T1  - Electrochemical degradation of esomeprasole on different electrodes in a sense of environment protection
T1  - Elektrohemijska degradacija esomeprazola na različitim elektrodama u cilju zaštite životne sredine
EP  - 65
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6746
ER  - 

@conference{
author = "Avramov Ivić, Milka and Lović, Jelena and Lađarević, Jelena and Mijin, Dušan and Stevanović, Sanja and Nikolić, Nebojša and Vuković, Dragan and Petrović, Slobodan",
year = "2018",
abstract = "Esomeprazole has been shown to be the most effective oral PPI for controlling intragastric pH. The persistence of esomeprasole in environmental systems could be solved by different types of its degradation. In this work electrocatalytic degradation of esomeprasole has been investigated in the presence of sodium sulfate and sodium chloride using IrOx electrode and was monitored using UV-Vis spectrophotometer at 303 nm. Also the electro degradation process was examined and on Au electrode. NanoScope III A (Veeco, USA) microscope was used to study the morphology of Esomeprazole on the gold surface by atomic force microscopy. By optical microscopy the
morphology of Esomeprazole dissolved in human serum on the gold surface was studied as well., Ezomeprazol je poznat kao najefikasniji lek , tj. inhibitor protonske pumpe u
kontroli intragastricne vrednosti pH. Njegovo prisustvo u vodenim tokovima i
zemljištu se resava osmišljavanjem novih postupaka degradacije. U ovom radu
elektrokatalitiþka degradacija ezomeprazola je prouþavana u natrijum sulfatu i
natrijum hloridu na IrOx elektrodi. Reakcija je praüena korišüenjem UV-Vis
spektrofotometra na 303 nm. Takoÿe je prouþavana degradacija ezomeprazola
na elektrodi od zlata. NanoScope III A (Veeco, USA) mikroskop je korišüen u
prouþavanju morfologije ezomeprazola na površini eelektrode od zlata
mikroskopijom mneÿuatomskih sila. Optiþkom mikroskopijom je ispitivana
morfologija ezomeprazola na površini eelektrode od zlata u prisustvu humanog
seruma.",
publisher = "Podgorica : Crnogorsko društvo za koroziju, zaštitu materijala i zaštitu životne sredine",
journal = "Knjiga radova / Četvrti Međunarodni simpozijum o koroziji i zaštiti materijala, životnoj sredini i zaštiti od požara = Proceedings / Fourth International symposium on corrosion and materials protection, environmental protection and protection against fire, Bar, 18-21. septembar 2018. godine",
title = "Electrochemical degradation of esomeprasole on different electrodes in a sense of environment protection, Elektrohemijska degradacija esomeprazola na različitim elektrodama u cilju zaštite životne sredine",
pages = "65-61",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6746"
}

Avramov Ivić, M., Lović, J., Lađarević, J., Mijin, D., Stevanović, S., Nikolić, N., Vuković, D.,& Petrović, S.. (2018). Electrochemical degradation of esomeprasole on different electrodes in a sense of environment protection. in Knjiga radova / Četvrti Međunarodni simpozijum o koroziji i zaštiti materijala, životnoj sredini i zaštiti od požara = Proceedings / Fourth International symposium on corrosion and materials protection, environmental protection and protection against fire, Bar, 18-21. septembar 2018. godine
Podgorica : Crnogorsko društvo za koroziju, zaštitu materijala i zaštitu životne sredine., 61-65.
https://hdl.handle.net/21.15107/rcub_technorep_6746

Avramov Ivić M, Lović J, Lađarević J, Mijin D, Stevanović S, Nikolić N, Vuković D, Petrović S. Electrochemical degradation of esomeprasole on different electrodes in a sense of environment protection. in Knjiga radova / Četvrti Međunarodni simpozijum o koroziji i zaštiti materijala, životnoj sredini i zaštiti od požara = Proceedings / Fourth International symposium on corrosion and materials protection, environmental protection and protection against fire, Bar, 18-21. septembar 2018. godine. 2018;:61-65.
https://hdl.handle.net/21.15107/rcub_technorep_6746 .

Avramov Ivić, Milka, Lović, Jelena, Lađarević, Jelena, Mijin, Dušan, Stevanović, Sanja, Nikolić, Nebojša, Vuković, Dragan, Petrović, Slobodan, "Electrochemical degradation of esomeprasole on different electrodes in a sense of environment protection" in Knjiga radova / Četvrti Međunarodni simpozijum o koroziji i zaštiti materijala, životnoj sredini i zaštiti od požara = Proceedings / Fourth International symposium on corrosion and materials protection, environmental protection and protection against fire, Bar, 18-21. septembar 2018. godine (2018):61-65,
https://hdl.handle.net/21.15107/rcub_technorep_6746 .

TY  - JOUR
AU  - Lović, Jelena
AU  - Stevanović, Sanja
AU  - Anđelković, Boban D.
AU  - Petrović, Slobodan
AU  - Vuković, Dragan
AU  - Prlainović, Nevena
AU  - Mijin, Dušan
AU  - Nikolić, Nebojša
AU  - Avramov-Ivić, Milka
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3907
AB  - Glucose biosensor containing cysteine (Cys), glutaraldehyde (GA) and glucose oxidase (GOx) onto gold electrode is constructed and already electrochemically tested. Now, the electrochemical behavior of biosensor in human serum is further investigated and supported by morphological characterization of layers for the first time. The morphology and microstructure of layers was examined by Fourier transformed infra red spectroscopy (FTIR), atomic force (AFM) and optical microscopy (OM). The electrochemical indication that the Cys-GA-GOx film on Au surface is not compact and that there were some bare regions which remain catalytically active is supported by AFM and OM results. The construction and the nature of bonding of Au-Cys-GA-GOx biosensor layers is confirmed by the FTIR study.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Electrochemical glucose biosensor with the characterization of surface morphology and content of glucose oxidase-glutaraldehyde-cysteine layers on gold electrode
EP  - 12348
IS  - 12
SP  - 12340
VL  - 13
DO  - 10.20964/2018.12.59
ER  - 

@article{
author = "Lović, Jelena and Stevanović, Sanja and Anđelković, Boban D. and Petrović, Slobodan and Vuković, Dragan and Prlainović, Nevena and Mijin, Dušan and Nikolić, Nebojša and Avramov-Ivić, Milka",
year = "2018",
abstract = "Glucose biosensor containing cysteine (Cys), glutaraldehyde (GA) and glucose oxidase (GOx) onto gold electrode is constructed and already electrochemically tested. Now, the electrochemical behavior of biosensor in human serum is further investigated and supported by morphological characterization of layers for the first time. The morphology and microstructure of layers was examined by Fourier transformed infra red spectroscopy (FTIR), atomic force (AFM) and optical microscopy (OM). The electrochemical indication that the Cys-GA-GOx film on Au surface is not compact and that there were some bare regions which remain catalytically active is supported by AFM and OM results. The construction and the nature of bonding of Au-Cys-GA-GOx biosensor layers is confirmed by the FTIR study.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Electrochemical glucose biosensor with the characterization of surface morphology and content of glucose oxidase-glutaraldehyde-cysteine layers on gold electrode",
pages = "12348-12340",
number = "12",
volume = "13",
doi = "10.20964/2018.12.59"
}

Lović, J., Stevanović, S., Anđelković, B. D., Petrović, S., Vuković, D., Prlainović, N., Mijin, D., Nikolić, N.,& Avramov-Ivić, M.. (2018). Electrochemical glucose biosensor with the characterization of surface morphology and content of glucose oxidase-glutaraldehyde-cysteine layers on gold electrode. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 13(12), 12340-12348.
https://doi.org/10.20964/2018.12.59

Lović J, Stevanović S, Anđelković BD, Petrović S, Vuković D, Prlainović N, Mijin D, Nikolić N, Avramov-Ivić M. Electrochemical glucose biosensor with the characterization of surface morphology and content of glucose oxidase-glutaraldehyde-cysteine layers on gold electrode. in International Journal of Electrochemical Science. 2018;13(12):12340-12348.
doi:10.20964/2018.12.59 .

Lović, Jelena, Stevanović, Sanja, Anđelković, Boban D., Petrović, Slobodan, Vuković, Dragan, Prlainović, Nevena, Mijin, Dušan, Nikolić, Nebojša, Avramov-Ivić, Milka, "Electrochemical glucose biosensor with the characterization of surface morphology and content of glucose oxidase-glutaraldehyde-cysteine layers on gold electrode" in International Journal of Electrochemical Science, 13, no. 12 (2018):12340-12348,
https://doi.org/10.20964/2018.12.59 . .

TY  - JOUR
AU  - Lović, Jelena
AU  - Stevanović, Sanja
AU  - Nikolić, Nebojša
AU  - Petrović, Slobodan
AU  - Vuković, Dragan
AU  - Prlainović, Nevena
AU  - Mijin, Dušan
AU  - Avramov-Ivić, Milka
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3570
AB  - The method to develop a stable glucose biosensor with successive attachment of cysteine (Cys), glutaraldehyde (GA) and glucose oxidase (GOx) onto gold electrode is presented. The cyclic voltammetry (CV) suggests the diffusion control of the glucose oxidation. The obtained biosensor shows a fast electron transfer of k(0) = 20.4 s(-1), high affinity for glucose with the apparent MichaelisMenten constant K-M(app) = 1.15 mM, a low detection limit of 0.94 mM in a linear range 1.5-7 mM. This biosensor exhibits good stability and reproducibility. Good biocompatibility of modified electrode surface, which enhances the covalent bonded enzyme and consequently glucose oxidation, resulted in biosensor with excellent performances. Biosensor was tested in samples containing human serum.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Glucose Sensing Using Glucose Oxidase-GlutaraldehydeCysteine Modified Gold Electrode
EP  - 5817
IS  - 7
SP  - 5806
VL  - 12
DO  - 10.20964/2017.07.65
ER  - 

@article{
author = "Lović, Jelena and Stevanović, Sanja and Nikolić, Nebojša and Petrović, Slobodan and Vuković, Dragan and Prlainović, Nevena and Mijin, Dušan and Avramov-Ivić, Milka",
year = "2017",
abstract = "The method to develop a stable glucose biosensor with successive attachment of cysteine (Cys), glutaraldehyde (GA) and glucose oxidase (GOx) onto gold electrode is presented. The cyclic voltammetry (CV) suggests the diffusion control of the glucose oxidation. The obtained biosensor shows a fast electron transfer of k(0) = 20.4 s(-1), high affinity for glucose with the apparent MichaelisMenten constant K-M(app) = 1.15 mM, a low detection limit of 0.94 mM in a linear range 1.5-7 mM. This biosensor exhibits good stability and reproducibility. Good biocompatibility of modified electrode surface, which enhances the covalent bonded enzyme and consequently glucose oxidation, resulted in biosensor with excellent performances. Biosensor was tested in samples containing human serum.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Glucose Sensing Using Glucose Oxidase-GlutaraldehydeCysteine Modified Gold Electrode",
pages = "5817-5806",
number = "7",
volume = "12",
doi = "10.20964/2017.07.65"
}

Lović, J., Stevanović, S., Nikolić, N., Petrović, S., Vuković, D., Prlainović, N., Mijin, D.,& Avramov-Ivić, M.. (2017). Glucose Sensing Using Glucose Oxidase-GlutaraldehydeCysteine Modified Gold Electrode. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 12(7), 5806-5817.
https://doi.org/10.20964/2017.07.65

Lović J, Stevanović S, Nikolić N, Petrović S, Vuković D, Prlainović N, Mijin D, Avramov-Ivić M. Glucose Sensing Using Glucose Oxidase-GlutaraldehydeCysteine Modified Gold Electrode. in International Journal of Electrochemical Science. 2017;12(7):5806-5817.
doi:10.20964/2017.07.65 .

Lović, Jelena, Stevanović, Sanja, Nikolić, Nebojša, Petrović, Slobodan, Vuković, Dragan, Prlainović, Nevena, Mijin, Dušan, Avramov-Ivić, Milka, "Glucose Sensing Using Glucose Oxidase-GlutaraldehydeCysteine Modified Gold Electrode" in International Journal of Electrochemical Science, 12, no. 7 (2017):5806-5817,
https://doi.org/10.20964/2017.07.65 . .

TY  - JOUR
AU  - Lović, Jelena
AU  - Trišović, Nemanja
AU  - Antanasijević, Jelena
AU  - Nikolić, Nebojša
AU  - Stevanović, Sanja
AU  - Mijin, Dušan
AU  - Vuković, Dragan
AU  - Mladenović, Aleksandar R.
AU  - Petrović, Slobodan
AU  - Avramov-Ivić, Milka
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3312
AB  - Nonmedical use of sildenafil citrate (SC) requires new methods for drug determination in human serum and in tablets. SC as standard and in Sildena (R) tablets is determined by square wave voltammetry (SWV) in 0.1 M H2SO4 (harmful for human serum) at gold electrode in a range: (1 x 10(-3),1 x 10(-2), 0.1, 0.5,1) mu M and on cysteine (Cys) modified gold electrode (Au/Cys) in a range: (1 x 10(-3),1 x 10(-2), 0.05, 0.1) mu M. The presence of Cys causes two times larger peak currents and shifting of the incipient potential of the SC oxidation to 0.1 V in negative direction. A safe procedure for SC determination as standard and in Sildena (R) tablets spiked with human serum is developed by SWV at gold electrode in 0.05 M NaHCO3 (suitable for human liquids) in a range: (1 x 10(-3),1 x 10(-2), 0.1, 0.2, 03) mu M. Microscopic characterization of the surfaces morphology was also performed. The SC concentrations were checked by high performance liquid chromatography-ultraviolet spectroscopy (HPLC-UV) showing that electrochemical method is more sensitive and can be used for the measurements of very low concentrations of the analyte.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Electrochemical determination of sildenafil citrate as standard, in tablets and spiked with human serum at gold and cystein modified gold electrode
EP  - 107
SP  - 103
VL  - 782
DO  - 10.1016/j.jelechem.2016.10.022
ER  - 

@article{
author = "Lović, Jelena and Trišović, Nemanja and Antanasijević, Jelena and Nikolić, Nebojša and Stevanović, Sanja and Mijin, Dušan and Vuković, Dragan and Mladenović, Aleksandar R. and Petrović, Slobodan and Avramov-Ivić, Milka",
year = "2016",
abstract = "Nonmedical use of sildenafil citrate (SC) requires new methods for drug determination in human serum and in tablets. SC as standard and in Sildena (R) tablets is determined by square wave voltammetry (SWV) in 0.1 M H2SO4 (harmful for human serum) at gold electrode in a range: (1 x 10(-3),1 x 10(-2), 0.1, 0.5,1) mu M and on cysteine (Cys) modified gold electrode (Au/Cys) in a range: (1 x 10(-3),1 x 10(-2), 0.05, 0.1) mu M. The presence of Cys causes two times larger peak currents and shifting of the incipient potential of the SC oxidation to 0.1 V in negative direction. A safe procedure for SC determination as standard and in Sildena (R) tablets spiked with human serum is developed by SWV at gold electrode in 0.05 M NaHCO3 (suitable for human liquids) in a range: (1 x 10(-3),1 x 10(-2), 0.1, 0.2, 03) mu M. Microscopic characterization of the surfaces morphology was also performed. The SC concentrations were checked by high performance liquid chromatography-ultraviolet spectroscopy (HPLC-UV) showing that electrochemical method is more sensitive and can be used for the measurements of very low concentrations of the analyte.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrochemical determination of sildenafil citrate as standard, in tablets and spiked with human serum at gold and cystein modified gold electrode",
pages = "107-103",
volume = "782",
doi = "10.1016/j.jelechem.2016.10.022"
}

Lović, J., Trišović, N., Antanasijević, J., Nikolić, N., Stevanović, S., Mijin, D., Vuković, D., Mladenović, A. R., Petrović, S.,& Avramov-Ivić, M.. (2016). Electrochemical determination of sildenafil citrate as standard, in tablets and spiked with human serum at gold and cystein modified gold electrode. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 782, 103-107.
https://doi.org/10.1016/j.jelechem.2016.10.022

Lović J, Trišović N, Antanasijević J, Nikolić N, Stevanović S, Mijin D, Vuković D, Mladenović AR, Petrović S, Avramov-Ivić M. Electrochemical determination of sildenafil citrate as standard, in tablets and spiked with human serum at gold and cystein modified gold electrode. in Journal of Electroanalytical Chemistry. 2016;782:103-107.
doi:10.1016/j.jelechem.2016.10.022 .

Lović, Jelena, Trišović, Nemanja, Antanasijević, Jelena, Nikolić, Nebojša, Stevanović, Sanja, Mijin, Dušan, Vuković, Dragan, Mladenović, Aleksandar R., Petrović, Slobodan, Avramov-Ivić, Milka, "Electrochemical determination of sildenafil citrate as standard, in tablets and spiked with human serum at gold and cystein modified gold electrode" in Journal of Electroanalytical Chemistry, 782 (2016):103-107,
https://doi.org/10.1016/j.jelechem.2016.10.022 . .

TY  - JOUR
AU  - Obradović, Vera
AU  - Kojović, Aleksandar
AU  - Stojanović, Dušica
AU  - Nikolić, Nebojša
AU  - Živković, Irena
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1791
AB  - The poly (vinyl butyral)-silica (PVB-SiO2) nanofibers were obtained by the electrospinning process. The experiments were carried out with PVB solution in concentration of 10 wt.% where ethanol was used as the solvent. The silica nanoparticles were added in the solution in different contents of 1, 3 and 5 wt.% SiO2 and nanoparticles were modified with γ-aminopropyltriethoxysilane (AMEO silane). The impacts of the parameters of the electrospinning process and the silica nanoparticles on the produced PVB-SiO2 nanocomposite fibers were tested. The structures of the PVB-SiO2 nanocomposite fibers were investigated using optical microscopy and scanning electron microscopy (SEM). The morphology and distribution of the resulting nanofibers were analyzed using the software Image-Pro Plus. .
AB  - Poli (vinil butiral)-silika (PVB-SiO2) nanovlakna su dobijena metodom elektrospininga. Eksperimenti su izvedeni u rastvoru 10 mas.% PVB-a u etanolu koji je korišćen kao rastvarač. Nanočestice silike su dodate sa različitim sadržajem od 1, 3 i 5 mas.% SiO2 i modifikovane γ-aminopropiltrietoksi silanom (AMEO silanom). Istražen je uticaj procesnih parametara elektrospininga na nanokompozitna vlakna PVB-SiO2. Struktura PVB-SiO2 nanokompozitnih vlakana je proučavana pomoću optičke mikroskopije i skenirajuće elektronske mikroskopije (SEM). Morfologija proizvedenih nanokompozitnih vlakana i njihova raspodela je analizirana u Image Pro Plus softveru. .
PB  - Military Technical Institute, Belgrade
T2  - Scientific Technical Review
T1  - The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process
T1  - Analiza formiranja PVB-SiO2 nanokompozitnih vlakana pomoću elektrospining procesa
EP  - 38
IS  - 3-4
SP  - 34
VL  - 61
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1791
ER  - 

@article{
author = "Obradović, Vera and Kojović, Aleksandar and Stojanović, Dušica and Nikolić, Nebojša and Živković, Irena and Uskoković, Petar and Aleksić, Radoslav",
year = "2011",
abstract = "The poly (vinyl butyral)-silica (PVB-SiO2) nanofibers were obtained by the electrospinning process. The experiments were carried out with PVB solution in concentration of 10 wt.% where ethanol was used as the solvent. The silica nanoparticles were added in the solution in different contents of 1, 3 and 5 wt.% SiO2 and nanoparticles were modified with γ-aminopropyltriethoxysilane (AMEO silane). The impacts of the parameters of the electrospinning process and the silica nanoparticles on the produced PVB-SiO2 nanocomposite fibers were tested. The structures of the PVB-SiO2 nanocomposite fibers were investigated using optical microscopy and scanning electron microscopy (SEM). The morphology and distribution of the resulting nanofibers were analyzed using the software Image-Pro Plus. ., Poli (vinil butiral)-silika (PVB-SiO2) nanovlakna su dobijena metodom elektrospininga. Eksperimenti su izvedeni u rastvoru 10 mas.% PVB-a u etanolu koji je korišćen kao rastvarač. Nanočestice silike su dodate sa različitim sadržajem od 1, 3 i 5 mas.% SiO2 i modifikovane γ-aminopropiltrietoksi silanom (AMEO silanom). Istražen je uticaj procesnih parametara elektrospininga na nanokompozitna vlakna PVB-SiO2. Struktura PVB-SiO2 nanokompozitnih vlakana je proučavana pomoću optičke mikroskopije i skenirajuće elektronske mikroskopije (SEM). Morfologija proizvedenih nanokompozitnih vlakana i njihova raspodela je analizirana u Image Pro Plus softveru. .",
publisher = "Military Technical Institute, Belgrade",
journal = "Scientific Technical Review",
title = "The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process, Analiza formiranja PVB-SiO2 nanokompozitnih vlakana pomoću elektrospining procesa",
pages = "38-34",
number = "3-4",
volume = "61",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1791"
}

Obradović, V., Kojović, A., Stojanović, D., Nikolić, N., Živković, I., Uskoković, P.,& Aleksić, R.. (2011). The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process. in Scientific Technical Review
Military Technical Institute, Belgrade., 61(3-4), 34-38.
https://hdl.handle.net/21.15107/rcub_technorep_1791

Obradović V, Kojović A, Stojanović D, Nikolić N, Živković I, Uskoković P, Aleksić R. The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process. in Scientific Technical Review. 2011;61(3-4):34-38.
https://hdl.handle.net/21.15107/rcub_technorep_1791 .

Obradović, Vera, Kojović, Aleksandar, Stojanović, Dušica, Nikolić, Nebojša, Živković, Irena, Uskoković, Petar, Aleksić, Radoslav, "The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process" in Scientific Technical Review, 61, no. 3-4 (2011):34-38,
https://hdl.handle.net/21.15107/rcub_technorep_1791 .

TY  - JOUR
AU  - Obradović, Vera
AU  - Kojović, Aleksandar
AU  - Stojanović, Dušica
AU  - Nikolić, Nebojša
AU  - Živković, Irena
AU  - Uskoković, Petar
AU  - Aleksić, Radoslav
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1758
AB  - The poly (vinyl butyral)-silica (PVB-SiO2) nanofibers were obtained by the electrospinning process. The experiments were carried out with PVB solution in concentration of 10 wt.% where ethanol was used as the solvent. The silica nanoparticles were added in the solution in different contents of 1, 3 and 5 wt.% SiO2 and nanoparticles were modified with γ-aminopropyltriethoxysilane (AMEO silane). The impacts of the parameters of the electrospinning process and the silica nanoparticles on the produced PVB-SiO2 nanocomposite fibers were tested. The structures of the PVB-SiO2 nanocomposite fibers were investigated using optical microscopy and scanning electron microscopy (SEM). The morphology and distribution of the resulting nanofibers were analyzed using the software Image-Pro Plus. .
AB  - Poli (vinil butiral)-silika (PVB-SiO2) nanovlakna su dobijena metodom elektrospininga. Eksperimenti su izvedeni u rastvoru 10 mas.% PVB-a u etanolu koji je korišćen kao rastvarač. Nanočestice silike su dodate sa različitim sadržajem od 1, 3 i 5 mas.% SiO2 i modifikovane γ-aminopropiltrietoksi silanom (AMEO silanom). Istražen je uticaj procesnih parametara elektrospininga na nanokompozitna vlakna PVB-SiO2. Struktura PVB-SiO2 nanokompozitnih vlakana je proučavana pomoću optičke mikroskopije i skenirajuće elektronske mikroskopije (SEM). Morfologija proizvedenih nanokompozitnih vlakana i njihova raspodela je analizirana u Image Pro Plus softveru. .
PB  - Vojnotehnički institut, Beograd
T2  - Scientific Technical Review
T1  - The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process
T1  - Analiza formiranja PVB-SiO2 nanokompozitnih vlakana pomoću elektrospining procesa
EP  - 38
IS  - 3-4
SP  - 34
VL  - 61
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1758
ER  - 

@article{
author = "Obradović, Vera and Kojović, Aleksandar and Stojanović, Dušica and Nikolić, Nebojša and Živković, Irena and Uskoković, Petar and Aleksić, Radoslav",
year = "2011",
abstract = "The poly (vinyl butyral)-silica (PVB-SiO2) nanofibers were obtained by the electrospinning process. The experiments were carried out with PVB solution in concentration of 10 wt.% where ethanol was used as the solvent. The silica nanoparticles were added in the solution in different contents of 1, 3 and 5 wt.% SiO2 and nanoparticles were modified with γ-aminopropyltriethoxysilane (AMEO silane). The impacts of the parameters of the electrospinning process and the silica nanoparticles on the produced PVB-SiO2 nanocomposite fibers were tested. The structures of the PVB-SiO2 nanocomposite fibers were investigated using optical microscopy and scanning electron microscopy (SEM). The morphology and distribution of the resulting nanofibers were analyzed using the software Image-Pro Plus. ., Poli (vinil butiral)-silika (PVB-SiO2) nanovlakna su dobijena metodom elektrospininga. Eksperimenti su izvedeni u rastvoru 10 mas.% PVB-a u etanolu koji je korišćen kao rastvarač. Nanočestice silike su dodate sa različitim sadržajem od 1, 3 i 5 mas.% SiO2 i modifikovane γ-aminopropiltrietoksi silanom (AMEO silanom). Istražen je uticaj procesnih parametara elektrospininga na nanokompozitna vlakna PVB-SiO2. Struktura PVB-SiO2 nanokompozitnih vlakana je proučavana pomoću optičke mikroskopije i skenirajuće elektronske mikroskopije (SEM). Morfologija proizvedenih nanokompozitnih vlakana i njihova raspodela je analizirana u Image Pro Plus softveru. .",
publisher = "Vojnotehnički institut, Beograd",
journal = "Scientific Technical Review",
title = "The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process, Analiza formiranja PVB-SiO2 nanokompozitnih vlakana pomoću elektrospining procesa",
pages = "38-34",
number = "3-4",
volume = "61",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1758"
}

Obradović, V., Kojović, A., Stojanović, D., Nikolić, N., Živković, I., Uskoković, P.,& Aleksić, R.. (2011). The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process. in Scientific Technical Review
Vojnotehnički institut, Beograd., 61(3-4), 34-38.
https://hdl.handle.net/21.15107/rcub_technorep_1758

Obradović V, Kojović A, Stojanović D, Nikolić N, Živković I, Uskoković P, Aleksić R. The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process. in Scientific Technical Review. 2011;61(3-4):34-38.
https://hdl.handle.net/21.15107/rcub_technorep_1758 .

Obradović, Vera, Kojović, Aleksandar, Stojanović, Dušica, Nikolić, Nebojša, Živković, Irena, Uskoković, Petar, Aleksić, Radoslav, "The analysis of forming PVB-SiO2 nanocomposite fibers by the electrospinning process" in Scientific Technical Review, 61, no. 3-4 (2011):34-38,
https://hdl.handle.net/21.15107/rcub_technorep_1758 .

TY  - JOUR
AU  - Elkais, Ali Ramadan
AU  - Gvozdenović, Milica
AU  - Jugović, Branimir
AU  - Stevanović, Jasmina
AU  - Nikolić, Nebojša
AU  - Grgur, Branimir
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1963
AB  - The polyaniline thin film electrode and powder have been synthesized on graphite electrodes from 0.5 M hydrochloric acid solution under galvanostatic conditions. The water insoluble and acetone soluble polyaniline mass fractions of the powder, as well as the polymerization efficiency, based on the emeraldine salt have been determined. The morphology of the obtained emeraldine salt powder has been investigated by the optical microscopy.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Electrochemical synthesis and characterization of polyaniline thin film and polyaniline powder
EP  - 35
IS  - 1
SP  - 32
VL  - 71
DO  - 10.1016/j.porgcoat.2010.12.004
ER  - 

@article{
author = "Elkais, Ali Ramadan and Gvozdenović, Milica and Jugović, Branimir and Stevanović, Jasmina and Nikolić, Nebojša and Grgur, Branimir",
year = "2011",
abstract = "The polyaniline thin film electrode and powder have been synthesized on graphite electrodes from 0.5 M hydrochloric acid solution under galvanostatic conditions. The water insoluble and acetone soluble polyaniline mass fractions of the powder, as well as the polymerization efficiency, based on the emeraldine salt have been determined. The morphology of the obtained emeraldine salt powder has been investigated by the optical microscopy.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Electrochemical synthesis and characterization of polyaniline thin film and polyaniline powder",
pages = "35-32",
number = "1",
volume = "71",
doi = "10.1016/j.porgcoat.2010.12.004"
}

Elkais, A. R., Gvozdenović, M., Jugović, B., Stevanović, J., Nikolić, N.,& Grgur, B.. (2011). Electrochemical synthesis and characterization of polyaniline thin film and polyaniline powder. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 71(1), 32-35.
https://doi.org/10.1016/j.porgcoat.2010.12.004

Elkais AR, Gvozdenović M, Jugović B, Stevanović J, Nikolić N, Grgur B. Electrochemical synthesis and characterization of polyaniline thin film and polyaniline powder. in Progress in Organic Coatings. 2011;71(1):32-35.
doi:10.1016/j.porgcoat.2010.12.004 .

Elkais, Ali Ramadan, Gvozdenović, Milica, Jugović, Branimir, Stevanović, Jasmina, Nikolić, Nebojša, Grgur, Branimir, "Electrochemical synthesis and characterization of polyaniline thin film and polyaniline powder" in Progress in Organic Coatings, 71, no. 1 (2011):32-35,
https://doi.org/10.1016/j.porgcoat.2010.12.004 . .