TY  - JOUR
AU  - Kolar-Anić, Ljiljana
AU  - Čupić, Željko
AU  - Maćešić, Stevan
AU  - Ivanović-Šašić, Ana
AU  - Dietrich, Johannes
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6416
AB  - The synthesis of thyroid hormones in the hypothalamic-pituitary-thyroid (HPT) axis was studied. For this purpose,
a reaction model for HPT axis with stoichiometric relations between the main reaction species was
postulated. Using the law of mass action, this model has been transformed into a set of nonlinear ordinary
differential equations. This new model has been examined by stoichiometric network analysis (SNA) with the aim
to see if it possesses the ability to reproduce oscillatory ultradian dynamics founded on the internal feedback
mechanism. In particular, a feedback regulation of TSH production based on the interplay between TRH, TSH,
somatostatin and thyroid hormones was proposed. Besides, the ten times larger amount of produced T4 with
respect to T3 in the thyroid gland was successfully simulated. The properties of SNA in combination with
experimental results, were used to determine the unknown parameters (19 rate constants of particular reaction
steps) necessary for numerical investigations. The steady-state concentrations of 15 reactive species were tuned
to be consistent with the experimental data. The predictive potential of the proposed model was illustrated on
numerical simulations of somatostatin influence on TSH dynamics investigated experimentally by Weeke et al. in
1975. In addition, all programs for SNA analysis were adapted for this kind of a large model. The procedure of
calculating rate constants from steady-state reaction rates and very limited available experimental data was
developed. For this purpose, a unique numerical method was developed to fine-tune model parameters while
preserving the fixed rate ratios and using the magnitude of the experimentally known oscillation period as the
only target value. The postulated model was numerically validated by perturbation simulations with somatostatin
infusion and the results were compared with experiments available in literature. Finally, as far as we know,
this reaction model with 15 variables is the most dimensional one that have been analysed mathematically to
obtain instability region and oscillatory dynamic states. Among the existing models of thyroid homeostasis this
theory represents a new class that may improve our understanding of basic physiological processes and helps to
develop new therapeutic approaches. Additionally, it may pave the way to improved diagnostic methods for
pituitary and thyroid disorders.
PB  - Elsevier
T2  - Computers in Biology and Medicine
T1  - Modelling of the thyroid hormone synthesis as a part of nonlinear reaction mechanism with feedback
VL  - 160
SP  - 106980
DO  - 10.1016/j.compbiomed.2023.106980
ER  - 

@article{
author = "Kolar-Anić, Ljiljana and Čupić, Željko and Maćešić, Stevan and Ivanović-Šašić, Ana and Dietrich, Johannes",
year = "2023",
abstract = "The synthesis of thyroid hormones in the hypothalamic-pituitary-thyroid (HPT) axis was studied. For this purpose,
a reaction model for HPT axis with stoichiometric relations between the main reaction species was
postulated. Using the law of mass action, this model has been transformed into a set of nonlinear ordinary
differential equations. This new model has been examined by stoichiometric network analysis (SNA) with the aim
to see if it possesses the ability to reproduce oscillatory ultradian dynamics founded on the internal feedback
mechanism. In particular, a feedback regulation of TSH production based on the interplay between TRH, TSH,
somatostatin and thyroid hormones was proposed. Besides, the ten times larger amount of produced T4 with
respect to T3 in the thyroid gland was successfully simulated. The properties of SNA in combination with
experimental results, were used to determine the unknown parameters (19 rate constants of particular reaction
steps) necessary for numerical investigations. The steady-state concentrations of 15 reactive species were tuned
to be consistent with the experimental data. The predictive potential of the proposed model was illustrated on
numerical simulations of somatostatin influence on TSH dynamics investigated experimentally by Weeke et al. in
1975. In addition, all programs for SNA analysis were adapted for this kind of a large model. The procedure of
calculating rate constants from steady-state reaction rates and very limited available experimental data was
developed. For this purpose, a unique numerical method was developed to fine-tune model parameters while
preserving the fixed rate ratios and using the magnitude of the experimentally known oscillation period as the
only target value. The postulated model was numerically validated by perturbation simulations with somatostatin
infusion and the results were compared with experiments available in literature. Finally, as far as we know,
this reaction model with 15 variables is the most dimensional one that have been analysed mathematically to
obtain instability region and oscillatory dynamic states. Among the existing models of thyroid homeostasis this
theory represents a new class that may improve our understanding of basic physiological processes and helps to
develop new therapeutic approaches. Additionally, it may pave the way to improved diagnostic methods for
pituitary and thyroid disorders.",
publisher = "Elsevier",
journal = "Computers in Biology and Medicine",
title = "Modelling of the thyroid hormone synthesis as a part of nonlinear reaction mechanism with feedback",
volume = "160",
pages = "106980",
doi = "10.1016/j.compbiomed.2023.106980"
}

Kolar-Anić, L., Čupić, Ž., Maćešić, S., Ivanović-Šašić, A.,& Dietrich, J.. (2023). Modelling of the thyroid hormone synthesis as a part of nonlinear reaction mechanism with feedback. in Computers in Biology and Medicine
Elsevier., 160, 106980.
https://doi.org/10.1016/j.compbiomed.2023.106980

Kolar-Anić L, Čupić Ž, Maćešić S, Ivanović-Šašić A, Dietrich J. Modelling of the thyroid hormone synthesis as a part of nonlinear reaction mechanism with feedback. in Computers in Biology and Medicine. 2023;160:106980.
doi:10.1016/j.compbiomed.2023.106980 .

Kolar-Anić, Ljiljana, Čupić, Željko, Maćešić, Stevan, Ivanović-Šašić, Ana, Dietrich, Johannes, "Modelling of the thyroid hormone synthesis as a part of nonlinear reaction mechanism with feedback" in Computers in Biology and Medicine, 160 (2023):106980,
https://doi.org/10.1016/j.compbiomed.2023.106980 . .

TY  - JOUR
AU  - Maćešić, Stevan
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7185
AB  - The effect of diffusion on the steady-state stability of an oscillatory chemical reaction model was investigated using stoichiometric network analysis and numerical simulations. Under both spatially uniform and nonuniform conditions, steady-state stability was investigated. Under spatially uniform conditions, the model can simulate oscillatory dynamics by passing through the Andronov-Hopf bifurcation. When diffusion is introduced into the system, the results have shown that two scenarios through which instabilities can occur are possible. Either, oscillations may be caused by the same instability as it was in homogeneous case, or, diffusion may cause new type of instability. Using the exponent polytope method, we derived a system of inequalities that describes the conditions for the emergence of both, oscillations, and diffusion-driven instabilities.
PB  - Elsevier
T2  - Chaos, Solitons & Fractals
T1  - Effect of diffusion on steady state stability of an oscillatory reaction model
VL  - 174
SP  - 113783
DO  - 10.1016/j.chaos.2023.113783
ER  - 

@article{
author = "Maćešić, Stevan and Čupić, Željko and Kolar-Anić, Ljiljana",
year = "2023",
abstract = "The effect of diffusion on the steady-state stability of an oscillatory chemical reaction model was investigated using stoichiometric network analysis and numerical simulations. Under both spatially uniform and nonuniform conditions, steady-state stability was investigated. Under spatially uniform conditions, the model can simulate oscillatory dynamics by passing through the Andronov-Hopf bifurcation. When diffusion is introduced into the system, the results have shown that two scenarios through which instabilities can occur are possible. Either, oscillations may be caused by the same instability as it was in homogeneous case, or, diffusion may cause new type of instability. Using the exponent polytope method, we derived a system of inequalities that describes the conditions for the emergence of both, oscillations, and diffusion-driven instabilities.",
publisher = "Elsevier",
journal = "Chaos, Solitons & Fractals",
title = "Effect of diffusion on steady state stability of an oscillatory reaction model",
volume = "174",
pages = "113783",
doi = "10.1016/j.chaos.2023.113783"
}

Maćešić, S., Čupić, Ž.,& Kolar-Anić, L.. (2023). Effect of diffusion on steady state stability of an oscillatory reaction model. in Chaos, Solitons & Fractals
Elsevier., 174, 113783.
https://doi.org/10.1016/j.chaos.2023.113783

Maćešić S, Čupić Ž, Kolar-Anić L. Effect of diffusion on steady state stability of an oscillatory reaction model. in Chaos, Solitons & Fractals. 2023;174:113783.
doi:10.1016/j.chaos.2023.113783 .

Maćešić, Stevan, Čupić, Željko, Kolar-Anić, Ljiljana, "Effect of diffusion on steady state stability of an oscillatory reaction model" in Chaos, Solitons & Fractals, 174 (2023):113783,
https://doi.org/10.1016/j.chaos.2023.113783 . .

TY  - JOUR
AU  - Čupić, Željko
AU  - Maćešić, Stevan
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
AU  - Ivanović-Šašić, Ana
AU  - Novaković, Katarina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5293
AB  - The study presents a mathematical model of Bruk Temkin-Gorodsky Novakovic (BT-GN) reaction system employing palladium-catalyzed oscillatory carbonylation reaction of mono alkyne-terminated poly(ethylene glycol) methyl ether. The proposed model advances simulation capabilities of this particular chemical oscillator but also BT-GN reactions in general. The model was verified using experimental data where good agreement is achieved and existence of complex pH oscillations like burst oscillations was matched. Furthermore, the model was used to predict reaction conditions capable of producing further complexities and initial conditions that would lead to desired period of pH oscillations. Having such a powerful tool, enhances our capabilities to study and further develop BT-GN oscillators with a reduced experimental effort.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Oscillatory carbonylation of poly(ethylene glycol)methyl ether acetylene. Improved model of reaction mechanism
VL  - 135
IS  - 1
SP  - 3
EP  - 14
DO  - 10.1007/s11144-021-02148-9
ER  - 

@article{
author = "Čupić, Željko and Maćešić, Stevan and Anić, Slobodan and Kolar-Anić, Ljiljana and Ivanović-Šašić, Ana and Novaković, Katarina",
year = "2022",
abstract = "The study presents a mathematical model of Bruk Temkin-Gorodsky Novakovic (BT-GN) reaction system employing palladium-catalyzed oscillatory carbonylation reaction of mono alkyne-terminated poly(ethylene glycol) methyl ether. The proposed model advances simulation capabilities of this particular chemical oscillator but also BT-GN reactions in general. The model was verified using experimental data where good agreement is achieved and existence of complex pH oscillations like burst oscillations was matched. Furthermore, the model was used to predict reaction conditions capable of producing further complexities and initial conditions that would lead to desired period of pH oscillations. Having such a powerful tool, enhances our capabilities to study and further develop BT-GN oscillators with a reduced experimental effort.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Oscillatory carbonylation of poly(ethylene glycol)methyl ether acetylene. Improved model of reaction mechanism",
volume = "135",
number = "1",
pages = "3-14",
doi = "10.1007/s11144-021-02148-9"
}

Čupić, Ž., Maćešić, S., Anić, S., Kolar-Anić, L., Ivanović-Šašić, A.,& Novaković, K.. (2022). Oscillatory carbonylation of poly(ethylene glycol)methyl ether acetylene. Improved model of reaction mechanism. in Reaction Kinetics, Mechanisms and Catalysis
Springer., 135(1), 3-14.
https://doi.org/10.1007/s11144-021-02148-9

Čupić Ž, Maćešić S, Anić S, Kolar-Anić L, Ivanović-Šašić A, Novaković K. Oscillatory carbonylation of poly(ethylene glycol)methyl ether acetylene. Improved model of reaction mechanism. in Reaction Kinetics, Mechanisms and Catalysis. 2022;135(1):3-14.
doi:10.1007/s11144-021-02148-9 .

Čupić, Željko, Maćešić, Stevan, Anić, Slobodan, Kolar-Anić, Ljiljana, Ivanović-Šašić, Ana, Novaković, Katarina, "Oscillatory carbonylation of poly(ethylene glycol)methyl ether acetylene. Improved model of reaction mechanism" in Reaction Kinetics, Mechanisms and Catalysis, 135, no. 1 (2022):3-14,
https://doi.org/10.1007/s11144-021-02148-9 . .

TY  - JOUR
AU  - Negrojević, Luka
AU  - Lončar, Aleksandar
AU  - Maksimović, Jelena
AU  - Anić, Slobodan
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
AU  - Pejić, Nataša
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5253
AB  - A kinetic method for the determination of l-tyrosine (Tyr) by analyte pulse perturbation, caused by different amounts of Tyr, in the Bray–Liebhafsky (BL) oscillatory reaction realized in a continuous-flow stirred tank reactor, is proposed. For such purposes, the BL oscillating reaction was kept in a stable non-equilibrium stationary state close to the bifurcation point and was used as the matrix reaction system. Under optimum reaction conditions, the linear relationship between the kinetic parameters, Δτ2 (the period between first two oscillations that appear after applied perturbation) as well as τend (the time elapsed between the perturbation of the BL reaction by Tyr and the termination of the oscillatory phase) and the Tyr concentrations is obtained over the ranges 1.1 × 10− 6 − 9.2 × 10− 6 mol L− 1 and 1.1 × 10− 6 − 1.4 × 10− 5 mol L− 1, with the limit of detections of 6.6 × 10− 7 mol L− 1 and 6.4 × 10− 7 mol L− 1. The described method that relies on a simple instrumental set-up, has been successfully applied to the determination of Tyr in a dietary supplement. Some aspects of the possible mechanism of Tyr action on the BL oscillator are discussed.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Bray–Liebhafsky oscillatory reaction in a continuous-flow stirred tank reactor as the matrix system for determination of tyrosine
VL  - 135
SP  - 1147
EP  - 1162
DO  - 10.1007/s11144-021-02130-5
ER  - 

@article{
author = "Negrojević, Luka and Lončar, Aleksandar and Maksimović, Jelena and Anić, Slobodan and Čupić, Željko and Kolar-Anić, Ljiljana and Pejić, Nataša",
year = "2022",
abstract = "A kinetic method for the determination of l-tyrosine (Tyr) by analyte pulse perturbation, caused by different amounts of Tyr, in the Bray–Liebhafsky (BL) oscillatory reaction realized in a continuous-flow stirred tank reactor, is proposed. For such purposes, the BL oscillating reaction was kept in a stable non-equilibrium stationary state close to the bifurcation point and was used as the matrix reaction system. Under optimum reaction conditions, the linear relationship between the kinetic parameters, Δτ2 (the period between first two oscillations that appear after applied perturbation) as well as τend (the time elapsed between the perturbation of the BL reaction by Tyr and the termination of the oscillatory phase) and the Tyr concentrations is obtained over the ranges 1.1 × 10− 6 − 9.2 × 10− 6 mol L− 1 and 1.1 × 10− 6 − 1.4 × 10− 5 mol L− 1, with the limit of detections of 6.6 × 10− 7 mol L− 1 and 6.4 × 10− 7 mol L− 1. The described method that relies on a simple instrumental set-up, has been successfully applied to the determination of Tyr in a dietary supplement. Some aspects of the possible mechanism of Tyr action on the BL oscillator are discussed.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Bray–Liebhafsky oscillatory reaction in a continuous-flow stirred tank reactor as the matrix system for determination of tyrosine",
volume = "135",
pages = "1147-1162",
doi = "10.1007/s11144-021-02130-5"
}

Negrojević, L., Lončar, A., Maksimović, J., Anić, S., Čupić, Ž., Kolar-Anić, L.,& Pejić, N.. (2022). Bray–Liebhafsky oscillatory reaction in a continuous-flow stirred tank reactor as the matrix system for determination of tyrosine. in Reaction Kinetics, Mechanisms and Catalysis
Springer., 135, 1147-1162.
https://doi.org/10.1007/s11144-021-02130-5

Negrojević L, Lončar A, Maksimović J, Anić S, Čupić Ž, Kolar-Anić L, Pejić N. Bray–Liebhafsky oscillatory reaction in a continuous-flow stirred tank reactor as the matrix system for determination of tyrosine. in Reaction Kinetics, Mechanisms and Catalysis. 2022;135:1147-1162.
doi:10.1007/s11144-021-02130-5 .

Negrojević, Luka, Lončar, Aleksandar, Maksimović, Jelena, Anić, Slobodan, Čupić, Željko, Kolar-Anić, Ljiljana, Pejić, Nataša, "Bray–Liebhafsky oscillatory reaction in a continuous-flow stirred tank reactor as the matrix system for determination of tyrosine" in Reaction Kinetics, Mechanisms and Catalysis, 135 (2022):1147-1162,
https://doi.org/10.1007/s11144-021-02130-5 . .

TY  - JOUR
AU  - Stojiljković, Aleksandra S.
AU  - Čupić, Željko
AU  - Maćešić, Stevan
AU  - Ivanović - Šašić, Ana
AU  - Kolar-Anić, Ljiljana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5390
AB  - Numerous studies on humans and animals have indicated that the corticotrophin-releasing hormone (CRH) and arginine vasopressin (AVP) stimulate both individually and synergistically secretion of adrenocorticotropic hormone (ACTH) by corticotropic cells in anterior pituitary. With aim to characterize and better comprehend the mechanisms underlying the effects of AVP on Hypothalamic-Pituitary-Adrenal (HPA) axis ultradian dynamics, AVP is here incorporated into our previously proposed stoichiometric model of HPA axis in humans. This extended nonlinear network reaction model took into account AVP by: reaction steps associated with two separate inflows of AVP into pituitary portal system, that is synthesized and released from hypothalamic parvocellular and magnocellular neuronal populations, as well as summarized reaction steps related to its individual and synergistic action with CRH on corticotropic cells. To explore the properties of extended model and its capacity to emulate the effects of AVP, nonlinear dynamical systems theory and bifurcation analyses based on numerical simulations were utilized to determine the dependence of ultradian oscillations on rate constants of the inflows of CRH and AVP from parvocellular neuronal populations, the conditions under which dynamical transitions occur due to their synergistic action and, moreover, the types of these transitions. The results show that under certain conditions, HPA system could enter into oscillatory dynamic states from stable steady state and vice versa under the influence of synergy reaction rate constant. Transitions between these dynamical states were always through supercritical Andronov-Hopf bifurcation point. Also, results revealed the conditions under which amplitudes of ultradian oscillations could increase several-fold due to CRH and AVP synergistic stimulation of ACTH secretion in accordance with results reported in the literature. Moreover, results showed experimentally observed superiority of CRH as a stimulator of ACTH secretion compared to AVP in humans. The proposed model can be very useful in studies related to the role of AVP and its synergistic action with CRH in life-threatening circumstances such as acute homeostasis dynamic crisis, autoimmune inflammations or severe hypovolemia requiring instant or several-days sustained corticosteroid excess levels. Moreover, the model can be helpful for investigations of indirect AVP-induced HPA activity by exogenously administered AVP used in therapeutic treatment.
PB  - Frontiers Media S.A.
T2  - Frontiers in Endokrinology
T1  - Influence of arginine vasopressin on the ultradian dynamics of Hypothalamic-Pituitary-Adrenal axis
VL  - 13
SP  - 976323
DO  - 10.3389/fendo.2022.976323
ER  - 

@article{
author = "Stojiljković, Aleksandra S. and Čupić, Željko and Maćešić, Stevan and Ivanović - Šašić, Ana and Kolar-Anić, Ljiljana",
year = "2022",
abstract = "Numerous studies on humans and animals have indicated that the corticotrophin-releasing hormone (CRH) and arginine vasopressin (AVP) stimulate both individually and synergistically secretion of adrenocorticotropic hormone (ACTH) by corticotropic cells in anterior pituitary. With aim to characterize and better comprehend the mechanisms underlying the effects of AVP on Hypothalamic-Pituitary-Adrenal (HPA) axis ultradian dynamics, AVP is here incorporated into our previously proposed stoichiometric model of HPA axis in humans. This extended nonlinear network reaction model took into account AVP by: reaction steps associated with two separate inflows of AVP into pituitary portal system, that is synthesized and released from hypothalamic parvocellular and magnocellular neuronal populations, as well as summarized reaction steps related to its individual and synergistic action with CRH on corticotropic cells. To explore the properties of extended model and its capacity to emulate the effects of AVP, nonlinear dynamical systems theory and bifurcation analyses based on numerical simulations were utilized to determine the dependence of ultradian oscillations on rate constants of the inflows of CRH and AVP from parvocellular neuronal populations, the conditions under which dynamical transitions occur due to their synergistic action and, moreover, the types of these transitions. The results show that under certain conditions, HPA system could enter into oscillatory dynamic states from stable steady state and vice versa under the influence of synergy reaction rate constant. Transitions between these dynamical states were always through supercritical Andronov-Hopf bifurcation point. Also, results revealed the conditions under which amplitudes of ultradian oscillations could increase several-fold due to CRH and AVP synergistic stimulation of ACTH secretion in accordance with results reported in the literature. Moreover, results showed experimentally observed superiority of CRH as a stimulator of ACTH secretion compared to AVP in humans. The proposed model can be very useful in studies related to the role of AVP and its synergistic action with CRH in life-threatening circumstances such as acute homeostasis dynamic crisis, autoimmune inflammations or severe hypovolemia requiring instant or several-days sustained corticosteroid excess levels. Moreover, the model can be helpful for investigations of indirect AVP-induced HPA activity by exogenously administered AVP used in therapeutic treatment.",
publisher = "Frontiers Media S.A.",
journal = "Frontiers in Endokrinology",
title = "Influence of arginine vasopressin on the ultradian dynamics of Hypothalamic-Pituitary-Adrenal axis",
volume = "13",
pages = "976323",
doi = "10.3389/fendo.2022.976323"
}

Stojiljković, A. S., Čupić, Ž., Maćešić, S., Ivanović - Šašić, A.,& Kolar-Anić, L.. (2022). Influence of arginine vasopressin on the ultradian dynamics of Hypothalamic-Pituitary-Adrenal axis. in Frontiers in Endokrinology
Frontiers Media S.A.., 13, 976323.
https://doi.org/10.3389/fendo.2022.976323

Stojiljković AS, Čupić Ž, Maćešić S, Ivanović - Šašić A, Kolar-Anić L. Influence of arginine vasopressin on the ultradian dynamics of Hypothalamic-Pituitary-Adrenal axis. in Frontiers in Endokrinology. 2022;13:976323.
doi:10.3389/fendo.2022.976323 .

Stojiljković, Aleksandra S., Čupić, Željko, Maćešić, Stevan, Ivanović - Šašić, Ana, Kolar-Anić, Ljiljana, "Influence of arginine vasopressin on the ultradian dynamics of Hypothalamic-Pituitary-Adrenal axis" in Frontiers in Endokrinology, 13 (2022):976323,
https://doi.org/10.3389/fendo.2022.976323 . .

TY  - CONF
AU  - Ivanović-Šašić, Ana
AU  - Maćešić, Stevan
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6403
AB  - The Bray-Liebhafsky (BL) is one of the most analyzed oscillatory reaction both experimentally and 
numerically. Most of the experimentally obtained dynamical states of this reaction realized in a 
continuously fed well stirred tank reactor (CSTR) are successfully simulated. Beside others, 
numerous structured chaotic dynamical states were obtained between each two periodic states in the 
period doubling rout to chaos with respect to specific flow rate as the control parameter. It was an 
universal scenario throughout the whole mixed-mode region, as well as throughout other mixed-mode 
regions obtained under different initial conditions. However, the intermittent oscillations consistent 
of chaotic mixture of large-amplitude relaxation oscillations, grouped in bursts and small-amplitude 
sinusoidal ones or even quiescent parts between them known as gaps were also generated 
experimentally in the Bray–Liebhafsky reaction by varying different parameters such as temperature, 
flow rate or reactant concentrations under CSTR conditions. Nevertheless, it will be shown here that 
intermittent oscillations can be simulated by already published model of the BL reaction network.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
T1  - Various dinamical states in the Bray-Liebhafsky oscillatory reaction- from periodicity to intermittent chaos
VL  - I
SP  - 199
EP  - 199
UR  - https://hdl.handle.net/21.15107/rcub_cer_6403
ER  - 

@conference{
author = "Ivanović-Šašić, Ana and Maćešić, Stevan and Čupić, Željko and Kolar-Anić, Ljiljana",
year = "2021",
abstract = "The Bray-Liebhafsky (BL) is one of the most analyzed oscillatory reaction both experimentally and 
numerically. Most of the experimentally obtained dynamical states of this reaction realized in a 
continuously fed well stirred tank reactor (CSTR) are successfully simulated. Beside others, 
numerous structured chaotic dynamical states were obtained between each two periodic states in the 
period doubling rout to chaos with respect to specific flow rate as the control parameter. It was an 
universal scenario throughout the whole mixed-mode region, as well as throughout other mixed-mode 
regions obtained under different initial conditions. However, the intermittent oscillations consistent 
of chaotic mixture of large-amplitude relaxation oscillations, grouped in bursts and small-amplitude 
sinusoidal ones or even quiescent parts between them known as gaps were also generated 
experimentally in the Bray–Liebhafsky reaction by varying different parameters such as temperature, 
flow rate or reactant concentrations under CSTR conditions. Nevertheless, it will be shown here that 
intermittent oscillations can be simulated by already published model of the BL reaction network.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia",
title = "Various dinamical states in the Bray-Liebhafsky oscillatory reaction- from periodicity to intermittent chaos",
volume = "I",
pages = "199-199",
url = "https://hdl.handle.net/21.15107/rcub_cer_6403"
}

Ivanović-Šašić, A., Maćešić, S., Čupić, Ž.,& Kolar-Anić, L.. (2021). Various dinamical states in the Bray-Liebhafsky oscillatory reaction- from periodicity to intermittent chaos. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 199-199.
https://hdl.handle.net/21.15107/rcub_cer_6403

Ivanović-Šašić A, Maćešić S, Čupić Ž, Kolar-Anić L. Various dinamical states in the Bray-Liebhafsky oscillatory reaction- from periodicity to intermittent chaos. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia. 2021;I:199-199.
https://hdl.handle.net/21.15107/rcub_cer_6403 .

Ivanović-Šašić, Ana, Maćešić, Stevan, Čupić, Željko, Kolar-Anić, Ljiljana, "Various dinamical states in the Bray-Liebhafsky oscillatory reaction- from periodicity to intermittent chaos" in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia, I (2021):199-199,
https://hdl.handle.net/21.15107/rcub_cer_6403 .

TY  - CONF
AU  - Čupić, Željko
AU  - Ivanović-Šašić, Ana
AU  - Maćešić, Stevan
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6404
AB  - The first discovered homogeneous oscillatory reaction was the Bray-Liebhafsky (BL) one, 
described in a paper published exactly 100 years ago. However, the applicability of oscillatory 
reactions in chemical computing was recently discovered. Here we intend to expose the native 
computing concept applied to intermittent states of the BL reaction, because we believe that 
this particular state may have some advantages. For this purpose, numerical simulations will be
used based on the known model. Sequences of perturbations will be introduced by adding iodate 
(IO3
-
) and hydrogen peroxide (H2O2), separately, as well as in various combinations with one 
another. It will be shown that dynamic states obtained after perturbations with same species 
depend very much on the sequence in which these species were used in perturbations. 
Additionally, it will be shown that obtained dynamic states shift the system from chaotic 
intermittent dynamic state to different complex periodic states. Hence, the applicability of the 
BL reaction system in chemical computing was demonstrated.
PB  - Kragujevac, Serbia : Institute for Information Technologies, University of Kragujevac
C3  - Book of proceedings - 1st International Conference on Chemo and BioInformatics  ICCBIKG 2021, October 26-27, 2021, Kragujevac, Serbia
T1  - Applicability of Bray-Liebhafsky reaction for chemical computing
SP  - 431
EP  - 434
DO  - 10.46793/ICCBI21.431C
ER  - 

@conference{
author = "Čupić, Željko and Ivanović-Šašić, Ana and Maćešić, Stevan and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2021",
abstract = "The first discovered homogeneous oscillatory reaction was the Bray-Liebhafsky (BL) one, 
described in a paper published exactly 100 years ago. However, the applicability of oscillatory 
reactions in chemical computing was recently discovered. Here we intend to expose the native 
computing concept applied to intermittent states of the BL reaction, because we believe that 
this particular state may have some advantages. For this purpose, numerical simulations will be
used based on the known model. Sequences of perturbations will be introduced by adding iodate 
(IO3
-
) and hydrogen peroxide (H2O2), separately, as well as in various combinations with one 
another. It will be shown that dynamic states obtained after perturbations with same species 
depend very much on the sequence in which these species were used in perturbations. 
Additionally, it will be shown that obtained dynamic states shift the system from chaotic 
intermittent dynamic state to different complex periodic states. Hence, the applicability of the 
BL reaction system in chemical computing was demonstrated.",
publisher = "Kragujevac, Serbia : Institute for Information Technologies, University of Kragujevac",
journal = "Book of proceedings - 1st International Conference on Chemo and BioInformatics  ICCBIKG 2021, October 26-27, 2021, Kragujevac, Serbia",
title = "Applicability of Bray-Liebhafsky reaction for chemical computing",
pages = "431-434",
doi = "10.46793/ICCBI21.431C"
}

Čupić, Ž., Ivanović-Šašić, A., Maćešić, S., Anić, S.,& Kolar-Anić, L.. (2021). Applicability of Bray-Liebhafsky reaction for chemical computing. in Book of proceedings - 1st International Conference on Chemo and BioInformatics  ICCBIKG 2021, October 26-27, 2021, Kragujevac, Serbia
Kragujevac, Serbia : Institute for Information Technologies, University of Kragujevac., 431-434.
https://doi.org/10.46793/ICCBI21.431C

Čupić Ž, Ivanović-Šašić A, Maćešić S, Anić S, Kolar-Anić L. Applicability of Bray-Liebhafsky reaction for chemical computing. in Book of proceedings - 1st International Conference on Chemo and BioInformatics  ICCBIKG 2021, October 26-27, 2021, Kragujevac, Serbia. 2021;:431-434.
doi:10.46793/ICCBI21.431C .

Čupić, Željko, Ivanović-Šašić, Ana, Maćešić, Stevan, Anić, Slobodan, Kolar-Anić, Ljiljana, "Applicability of Bray-Liebhafsky reaction for chemical computing" in Book of proceedings - 1st International Conference on Chemo and BioInformatics  ICCBIKG 2021, October 26-27, 2021, Kragujevac, Serbia (2021):431-434,
https://doi.org/10.46793/ICCBI21.431C . .

TY  - JOUR
AU  - Antić, Katarina M.
AU  - Onjia, Antonije
AU  - Vasiljević-Radović, Dana
AU  - Veličković, Zlate
AU  - Tomić, Simonida Lj.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4897
AB  - The adsorption of Ni2+ ions from water solutions by using hydrogels based on 2-hydroxyethyl acrylate (HEA) and itaconic acid (IA) was studied. Hydrogel synthesis was optimized with response surface methodology (RSM). The hydrogel with the best adsorption capacity towards Ni2+ ions was chosen for further experiments. The hydrogel was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis before and after the adsorption of Ni2+ ions. Batch equilibrium experiments were conducted to investigate the influence of solution pH, hydrogel weight, ionic strength, adsorption time, temperature and initial concentration of nickel ions on the adsorption. Time-dependent adsorption fitted the best to the pseudo-second-order kinetic model. A thermodynamic study revealed that the adsorption was an exothermic and non-spontaneous process. Five isotherm models were studied, and the best fit was obtained with the Redlich–Peterson model. Consecutive adsorption/desorption studies indicated that the HEA/IA hydrogel can be efficiently used as a sorbent for the removal of Ni2+ ions from the water solution. This study develops a potential adsorbent for the effective removal of trace nickel ions.
PB  - MDPI
T2  - Gels
T1  - Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology
VL  - 7
IS  - 4
IS  - 225
DO  - 10.3390/gels7040225
ER  - 

@article{
author = "Antić, Katarina M. and Onjia, Antonije and Vasiljević-Radović, Dana and Veličković, Zlate and Tomić, Simonida Lj.",
year = "2021",
abstract = "The adsorption of Ni2+ ions from water solutions by using hydrogels based on 2-hydroxyethyl acrylate (HEA) and itaconic acid (IA) was studied. Hydrogel synthesis was optimized with response surface methodology (RSM). The hydrogel with the best adsorption capacity towards Ni2+ ions was chosen for further experiments. The hydrogel was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis before and after the adsorption of Ni2+ ions. Batch equilibrium experiments were conducted to investigate the influence of solution pH, hydrogel weight, ionic strength, adsorption time, temperature and initial concentration of nickel ions on the adsorption. Time-dependent adsorption fitted the best to the pseudo-second-order kinetic model. A thermodynamic study revealed that the adsorption was an exothermic and non-spontaneous process. Five isotherm models were studied, and the best fit was obtained with the Redlich–Peterson model. Consecutive adsorption/desorption studies indicated that the HEA/IA hydrogel can be efficiently used as a sorbent for the removal of Ni2+ ions from the water solution. This study develops a potential adsorbent for the effective removal of trace nickel ions.",
publisher = "MDPI",
journal = "Gels",
title = "Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology",
volume = "7",
number = "4, 225",
doi = "10.3390/gels7040225"
}

Antić, K. M., Onjia, A., Vasiljević-Radović, D., Veličković, Z.,& Tomić, S. Lj.. (2021). Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology. in Gels
MDPI., 7(4).
https://doi.org/10.3390/gels7040225

Antić KM, Onjia A, Vasiljević-Radović D, Veličković Z, Tomić SL. Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology. in Gels. 2021;7(4).
doi:10.3390/gels7040225 .

Antić, Katarina M., Onjia, Antonije, Vasiljević-Radović, Dana, Veličković, Zlate, Tomić, Simonida Lj., "Removal of nickel ions from aqueous solutions by 2-hydroxyethyl acrylate/itaconic acid hydrogels optimized with response surface methodology" in Gels, 7, no. 4 (2021),
https://doi.org/10.3390/gels7040225 . .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3417
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.
PB  - Elsevier
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
SP  - 108139
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko and Marinović-Cincović, Milena and Mijin, Dušan",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.",
publisher = "Elsevier",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
pages = "108139",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B., Dramićanin, M., Vitnik, V., Vitnik, Ž., Marinović-Cincović, M.,& Mijin, D.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments
Elsevier., 175, 108139.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić B, Dramićanin M, Vitnik V, Vitnik Ž, Marinović-Cincović M, Mijin D. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175:108139.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan, Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko, Marinović-Cincović, Milena, Mijin, Dušan, "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020):108139,
https://doi.org/10.1016/j.dyepig.2019.108139 . .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3418
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.
PB  - Elsevier
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
SP  - 108139
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko and Marinović-Cincović, Milena and Mijin, Dušan",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.",
publisher = "Elsevier",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
pages = "108139",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B., Dramićanin, M., Vitnik, V., Vitnik, Ž., Marinović-Cincović, M.,& Mijin, D.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments
Elsevier., 175, 108139.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić B, Dramićanin M, Vitnik V, Vitnik Ž, Marinović-Cincović M, Mijin D. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175:108139.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan, Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko, Marinović-Cincović, Milena, Mijin, Dušan, "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020):108139,
https://doi.org/10.1016/j.dyepig.2019.108139 . .

TY  - JOUR
AU  - Bubanja, Itana Nuša
AU  - Ivanović-Šašić, Ana
AU  - Čupić, Željko
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3701
AB  - Dynamic states with intermittent oscillations consist of a chaotic mixture of large
amplitude relaxation oscillations grouped in bursts, and between them, small-amplitude
sinusoidal oscillations, or even the quiescent parts, known as gaps. In this study,
intermittent dynamic states were generated in Bray–Liebhafsky (BL) oscillatory reaction in
an isothermal continuously-fed, well-stirred tank reactor (CSTR) controled by changes of
specific flow rate. The intermittent states were found between two regular periodic states
and obtained for specific flow rate values from 0.020 to 0.082 min−1 . Phenomenological
analysis based on the quantitative characteristics of intermittent oscillations, as well
as, the largest Lyapunov exponents calculated from experimentally obtained time
series, both indicated the same type of behavior. Namely, fully developed chaos
arises when approaching to the vertical asymptote which is somewhere between two
bifurcations. Hence, this study proposes described route to fully developed chaos in
the Bray-Liebhafsky oscillatory reaction as an explanation for experimentally observed
intermittent dynamics. This is in correlation with our previously obtained results where the
most chaotic intermittent chaos was achieved between the periodic oscillatory dynamic
state and stable steady state, generated in BL under CSTR conditions by varying
temperature and inflow potassium iodate concentration. Moreover, it was shown that,
besides the largest Lyapunov exponent, analysis of chaos in experimentally obtained
intermittent states can be achieved by a simpler approach which involves using the
quantitative characteristics of the BL reaction evolution, that is, the number and length
of gaps and bursts obtained for the various values of specific flow rates.
PB  - Frontiers Media S.A.
T2  - Frontiers in chemistry
T1  - Intermittent Chaos in the CSTR Bray–Liebhafsky Oscillator-Specific Flow Rate Dependence
VL  - 8
SP  - 560274
DO  - 10.3389/fchem.2020.560274
ER  - 

@article{
author = "Bubanja, Itana Nuša and Ivanović-Šašić, Ana and Čupić, Željko and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2020",
abstract = "Dynamic states with intermittent oscillations consist of a chaotic mixture of large
amplitude relaxation oscillations grouped in bursts, and between them, small-amplitude
sinusoidal oscillations, or even the quiescent parts, known as gaps. In this study,
intermittent dynamic states were generated in Bray–Liebhafsky (BL) oscillatory reaction in
an isothermal continuously-fed, well-stirred tank reactor (CSTR) controled by changes of
specific flow rate. The intermittent states were found between two regular periodic states
and obtained for specific flow rate values from 0.020 to 0.082 min−1 . Phenomenological
analysis based on the quantitative characteristics of intermittent oscillations, as well
as, the largest Lyapunov exponents calculated from experimentally obtained time
series, both indicated the same type of behavior. Namely, fully developed chaos
arises when approaching to the vertical asymptote which is somewhere between two
bifurcations. Hence, this study proposes described route to fully developed chaos in
the Bray-Liebhafsky oscillatory reaction as an explanation for experimentally observed
intermittent dynamics. This is in correlation with our previously obtained results where the
most chaotic intermittent chaos was achieved between the periodic oscillatory dynamic
state and stable steady state, generated in BL under CSTR conditions by varying
temperature and inflow potassium iodate concentration. Moreover, it was shown that,
besides the largest Lyapunov exponent, analysis of chaos in experimentally obtained
intermittent states can be achieved by a simpler approach which involves using the
quantitative characteristics of the BL reaction evolution, that is, the number and length
of gaps and bursts obtained for the various values of specific flow rates.",
publisher = "Frontiers Media S.A.",
journal = "Frontiers in chemistry",
title = "Intermittent Chaos in the CSTR Bray–Liebhafsky Oscillator-Specific Flow Rate Dependence",
volume = "8",
pages = "560274",
doi = "10.3389/fchem.2020.560274"
}

Bubanja, I. N., Ivanović-Šašić, A., Čupić, Ž., Anić, S.,& Kolar-Anić, L.. (2020). Intermittent Chaos in the CSTR Bray–Liebhafsky Oscillator-Specific Flow Rate Dependence. in Frontiers in chemistry
Frontiers Media S.A.., 8, 560274.
https://doi.org/10.3389/fchem.2020.560274

Bubanja IN, Ivanović-Šašić A, Čupić Ž, Anić S, Kolar-Anić L. Intermittent Chaos in the CSTR Bray–Liebhafsky Oscillator-Specific Flow Rate Dependence. in Frontiers in chemistry. 2020;8:560274.
doi:10.3389/fchem.2020.560274 .

Bubanja, Itana Nuša, Ivanović-Šašić, Ana, Čupić, Željko, Anić, Slobodan, Kolar-Anić, Ljiljana, "Intermittent Chaos in the CSTR Bray–Liebhafsky Oscillator-Specific Flow Rate Dependence" in Frontiers in chemistry, 8 (2020):560274,
https://doi.org/10.3389/fchem.2020.560274 . .

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

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

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

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

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

TY  - JOUR
AU  - Maksimović, Jelena
AU  - Čupić, Željko
AU  - Manojlović, Nedeljko
AU  - Đerić, Aleksandra
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3603
AB  - Two hydroxyanthraquinones, alizarin and purpurin, that have been used throughout
history as a natural pigment, were extracted from roots of Rubia tinctorum from
Serbia. As substances with important chemical activities and, therefore, with wide
applications (for example in dyeing textile fabrics as well as in pharmacy because of
their anti-inflammatory, anti-cancer, antiviral, antimicrobial and antioxidant activities,
etc.) they were analyzed in the kinetically very sensitive Bray–Liebhafsky (BL)
oscillatory reaction. However, although they are both, hydroxyanthraquinones it is
shown that their interactions with BL nonlinear reaction system differ significantly.
Consequently, two different reactions were used to explain the mechanism of their
chemical activities. The numerical simulations based on a standard model of the BL
oscillatory reaction together with proposed reactions due to alizarin/purpurin interactions
with a matrix are correlated with experimental investigations. Moreover, it
is shown that very small amounts of alizarin and purpurin (from about 1 × 10–7 M)
produce the response of the BL matrix such that micro-quantitative analysis based
on the BL oscillatory reaction can be successfully performed in this reaction system.
The linear response of the BL matrix on the presence of alizarin and purpurin
(necessary for microquantitative determination) is analyzed as a function of two
concentration sensitive parameters: pre-oscillatory period τ1 and potential shift after
perturbation ΔE.
PB  - Springer Nature Switzerland AG 2020
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin
VL  - 130
SP  - 655
EP  - 688
DO  - 10.1007/s11144-020-01798-5
ER  - 

@article{
author = "Maksimović, Jelena and Čupić, Željko and Manojlović, Nedeljko and Đerić, Aleksandra and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2020",
abstract = "Two hydroxyanthraquinones, alizarin and purpurin, that have been used throughout
history as a natural pigment, were extracted from roots of Rubia tinctorum from
Serbia. As substances with important chemical activities and, therefore, with wide
applications (for example in dyeing textile fabrics as well as in pharmacy because of
their anti-inflammatory, anti-cancer, antiviral, antimicrobial and antioxidant activities,
etc.) they were analyzed in the kinetically very sensitive Bray–Liebhafsky (BL)
oscillatory reaction. However, although they are both, hydroxyanthraquinones it is
shown that their interactions with BL nonlinear reaction system differ significantly.
Consequently, two different reactions were used to explain the mechanism of their
chemical activities. The numerical simulations based on a standard model of the BL
oscillatory reaction together with proposed reactions due to alizarin/purpurin interactions
with a matrix are correlated with experimental investigations. Moreover, it
is shown that very small amounts of alizarin and purpurin (from about 1 × 10–7 M)
produce the response of the BL matrix such that micro-quantitative analysis based
on the BL oscillatory reaction can be successfully performed in this reaction system.
The linear response of the BL matrix on the presence of alizarin and purpurin
(necessary for microquantitative determination) is analyzed as a function of two
concentration sensitive parameters: pre-oscillatory period τ1 and potential shift after
perturbation ΔE.",
publisher = "Springer Nature Switzerland AG 2020",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin",
volume = "130",
pages = "655-688",
doi = "10.1007/s11144-020-01798-5"
}

Maksimović, J., Čupić, Ž., Manojlović, N., Đerić, A., Anić, S.,& Kolar-Anić, L.. (2020). Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin. in Reaction Kinetics, Mechanisms and Catalysis
Springer Nature Switzerland AG 2020., 130, 655-688.
https://doi.org/10.1007/s11144-020-01798-5

Maksimović J, Čupić Ž, Manojlović N, Đerić A, Anić S, Kolar-Anić L. Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin. in Reaction Kinetics, Mechanisms and Catalysis. 2020;130:655-688.
doi:10.1007/s11144-020-01798-5 .

Maksimović, Jelena, Čupić, Željko, Manojlović, Nedeljko, Đerić, Aleksandra, Anić, Slobodan, Kolar-Anić, Ljiljana, "Bray–Liebhafsky oscillatory reaction as the matrix system for the kinetic determination of microquantities of alizarin and purpurin" in Reaction Kinetics, Mechanisms and Catalysis, 130 (2020):655-688,
https://doi.org/10.1007/s11144-020-01798-5 . .

TY  - JOUR
AU  - Maksimović, Jelena P.
AU  - Tosović, Jelena
AU  - Pagnacco, Maja
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3776
AB  - The pyrocatechol inhibitory effect on the oscillatory Bray-Liebhafsky (BL) reaction is reported. Obtained results are compared with those available in the literature (R. Cervellati et al, Helvetica Chimica Acta 2001) for Briggs-Rauscher (BR) reaction with pyrocatechol addition. The two orders of magnitude larger calibration curve slope obtained in BR in comparison to BL reaction, suggests that different reactions are responsible for inhibitory effects in these systems. The potential explanation of pyrocatechol behavior is given by employing the ultraviolet-visible (UV/VIS) spectroscopy, density functional theory, and coupled cluster computational methods. The last two were employed for the first time to discover potential candidates among unstable chemical species HIO, HIO2, I2O, HOO•, HO•, IO•, IO2•, and I• of the BL (and BR) system for reaction with pyrocatechol. The calculated reaction rate constants for the hydrogen atom transfer reactions between pyrocatechol and free radical intermediates indicate the following order of reactivity: HO• > IO• > HOO• > IO2•. The same order of reactivity is also observed in the case of a thermodynamic investigation. In addition, kinetic insight indicates that the inhibitory behavior of pyrocatechol could not be explained with one particular chemical reaction in the BL (or in the BR) oscillatory system.
PB  - Chemical Society of Japan
T2  - Bulletin of the Chemical Society of Japan
T1  - Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study
VL  - 93
IS  - 5
SP  - 676
EP  - 684
DO  - 10.1246/bcsj.20190296
ER  - 

@article{
author = "Maksimović, Jelena P. and Tosović, Jelena and Pagnacco, Maja",
year = "2020",
abstract = "The pyrocatechol inhibitory effect on the oscillatory Bray-Liebhafsky (BL) reaction is reported. Obtained results are compared with those available in the literature (R. Cervellati et al, Helvetica Chimica Acta 2001) for Briggs-Rauscher (BR) reaction with pyrocatechol addition. The two orders of magnitude larger calibration curve slope obtained in BR in comparison to BL reaction, suggests that different reactions are responsible for inhibitory effects in these systems. The potential explanation of pyrocatechol behavior is given by employing the ultraviolet-visible (UV/VIS) spectroscopy, density functional theory, and coupled cluster computational methods. The last two were employed for the first time to discover potential candidates among unstable chemical species HIO, HIO2, I2O, HOO•, HO•, IO•, IO2•, and I• of the BL (and BR) system for reaction with pyrocatechol. The calculated reaction rate constants for the hydrogen atom transfer reactions between pyrocatechol and free radical intermediates indicate the following order of reactivity: HO• > IO• > HOO• > IO2•. The same order of reactivity is also observed in the case of a thermodynamic investigation. In addition, kinetic insight indicates that the inhibitory behavior of pyrocatechol could not be explained with one particular chemical reaction in the BL (or in the BR) oscillatory system.",
publisher = "Chemical Society of Japan",
journal = "Bulletin of the Chemical Society of Japan",
title = "Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study",
volume = "93",
number = "5",
pages = "676-684",
doi = "10.1246/bcsj.20190296"
}

Maksimović, J. P., Tosović, J.,& Pagnacco, M.. (2020). Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study. in Bulletin of the Chemical Society of Japan
Chemical Society of Japan., 93(5), 676-684.
https://doi.org/10.1246/bcsj.20190296

Maksimović JP, Tosović J, Pagnacco M. Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study. in Bulletin of the Chemical Society of Japan. 2020;93(5):676-684.
doi:10.1246/bcsj.20190296 .

Maksimović, Jelena P., Tosović, Jelena, Pagnacco, Maja, "Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study" in Bulletin of the Chemical Society of Japan, 93, no. 5 (2020):676-684,
https://doi.org/10.1246/bcsj.20190296 . .

TY  - JOUR
AU  - Maksimović, Jelena P.
AU  - Tosović, Jelena
AU  - Pagnacco, Maja
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3853
AB  - The pyrocatechol inhibitory effect on the oscillatory Bray-Liebhafsky (BL) reaction is reported. Obtained results are compared with those available in the literature (R. Cervellati et al, Helvetica Chimica Acta 2001) for Briggs-Rauscher (BR) reaction with pyrocatechol addition. The two orders of magnitude larger calibration curve slope obtained in BR in comparison to BL reaction, suggests that different reactions are responsible for inhibitory effects in these systems. The potential explanation of pyrocatechol behavior is given by employing the ultraviolet-visible (UV/VIS) spectroscopy, density functional theory, and coupled cluster computational methods. The last two were employed for the first time to discover potential candidates among unstable chemical species HIO, HIO2, I2O, HOO•, HO•, IO•, IO2•, and I• of the BL (and BR) system for reaction with pyrocatechol. The calculated reaction rate constants for the hydrogen atom transfer reactions between pyrocatechol and free radical intermediates indicate the following order of reactivity: HO• > IO• > HOO• > IO2•. The same order of reactivity is also observed in the case of a thermodynamic investigation. In addition, kinetic insight indicates that the inhibitory behavior of pyrocatechol could not be explained with one particular chemical reaction in the BL (or in the BR) oscillatory system.
PB  - Chemical Society of Japan
T2  - Bulletin of the Chemical Society of Japan
T1  - Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study
VL  - 93
IS  - 5
SP  - 676
EP  - 684
DO  - 10.1246/bcsj.20190296
ER  - 

@article{
author = "Maksimović, Jelena P. and Tosović, Jelena and Pagnacco, Maja",
year = "2020",
abstract = "The pyrocatechol inhibitory effect on the oscillatory Bray-Liebhafsky (BL) reaction is reported. Obtained results are compared with those available in the literature (R. Cervellati et al, Helvetica Chimica Acta 2001) for Briggs-Rauscher (BR) reaction with pyrocatechol addition. The two orders of magnitude larger calibration curve slope obtained in BR in comparison to BL reaction, suggests that different reactions are responsible for inhibitory effects in these systems. The potential explanation of pyrocatechol behavior is given by employing the ultraviolet-visible (UV/VIS) spectroscopy, density functional theory, and coupled cluster computational methods. The last two were employed for the first time to discover potential candidates among unstable chemical species HIO, HIO2, I2O, HOO•, HO•, IO•, IO2•, and I• of the BL (and BR) system for reaction with pyrocatechol. The calculated reaction rate constants for the hydrogen atom transfer reactions between pyrocatechol and free radical intermediates indicate the following order of reactivity: HO• > IO• > HOO• > IO2•. The same order of reactivity is also observed in the case of a thermodynamic investigation. In addition, kinetic insight indicates that the inhibitory behavior of pyrocatechol could not be explained with one particular chemical reaction in the BL (or in the BR) oscillatory system.",
publisher = "Chemical Society of Japan",
journal = "Bulletin of the Chemical Society of Japan",
title = "Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study",
volume = "93",
number = "5",
pages = "676-684",
doi = "10.1246/bcsj.20190296"
}

Maksimović, J. P., Tosović, J.,& Pagnacco, M.. (2020). Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study. in Bulletin of the Chemical Society of Japan
Chemical Society of Japan., 93(5), 676-684.
https://doi.org/10.1246/bcsj.20190296

Maksimović JP, Tosović J, Pagnacco M. Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study. in Bulletin of the Chemical Society of Japan. 2020;93(5):676-684.
doi:10.1246/bcsj.20190296 .

Maksimović, Jelena P., Tosović, Jelena, Pagnacco, Maja, "Insight into the Origin of Pyrocatechol Inhibition on Oscillating Bray-Liebhafsky Reaction: Combined Experimental and Theoretical Study" in Bulletin of the Chemical Society of Japan, 93, no. 5 (2020):676-684,
https://doi.org/10.1246/bcsj.20190296 . .

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan
AU  - Radović, Ivana
AU  - Stojmenović, Marija
AU  - Čebela, Maria
AU  - Nikolić, Željka
AU  - Pagnacco, Maja
AU  - Panić, Ivan
AU  - Stanković, Miroslav
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3230
AB  - In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO2 molecules, while the micropores are the most suitable for trapping of CO2. The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.
PB  - SAGE Publications
T2  - Energy & Environment
T1  - Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds
VL  - 31
IS  - 4
SP  - 583
EP  - 612
DO  - 10.1177/0958305X19880878
ER  - 

@article{
author = "Dodevski, Vladimir and Janković, Bojan and Radović, Ivana and Stojmenović, Marija and Čebela, Maria and Nikolić, Željka and Pagnacco, Maja and Panić, Ivan and Stanković, Miroslav",
year = "2020",
abstract = "In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO2 molecules, while the micropores are the most suitable for trapping of CO2. The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.",
publisher = "SAGE Publications",
journal = "Energy & Environment",
title = "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds",
volume = "31",
number = "4",
pages = "583-612",
doi = "10.1177/0958305X19880878"
}

Dodevski, V., Janković, B., Radović, I., Stojmenović, M., Čebela, M., Nikolić, Ž., Pagnacco, M., Panić, I.,& Stanković, M.. (2020). Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy & Environment
SAGE Publications., 31(4), 583-612.
https://doi.org/10.1177/0958305X19880878

Dodevski V, Janković B, Radović I, Stojmenović M, Čebela M, Nikolić Ž, Pagnacco M, Panić I, Stanković M. Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy & Environment. 2020;31(4):583-612.
doi:10.1177/0958305X19880878 .

Dodevski, Vladimir, Janković, Bojan, Radović, Ivana, Stojmenović, Marija, Čebela, Maria, Nikolić, Željka, Pagnacco, Maja, Panić, Ivan, Stanković, Miroslav, "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds" in Energy & Environment, 31, no. 4 (2020):583-612,
https://doi.org/10.1177/0958305X19880878 . .

TY  - CONF
AU  - Čupić, Željko
AU  - Maćešić, Stevan
AU  - Kolar-Anić, Ljiljana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3746
UR  - http://imqf.ekof.bg.ac.rs/ConfNonlin/index.html
AB  - Stability analysis of reaction systems is described by the application of the Stoichiometric Network Analysis to the three-variable-autocatalator. Although simple, this model is complex enough to describe complex forms of nonlinear dynamics phenomena, like mixed-mode oscillations and chaos. Therefore, stability analysis of such model is not a trivial task. Using the Stoichiometric Network Analysis for this purpose makes the process clear and leads to the reliable result.
The method is described briefly in few general steps and all of them are further clarified through the application to the chosen example. First, the reaction rates in steady state are decomposed to contributions of independent pathways, called extreme currents. Then, linearized operator is constructed. Finally, through the analysis of the principal minors of the essential part of this operator, simple stability criterion is identified.
PB  - Serbian academy of nonlinear sciences
C3  - Proceedings - 1st Conference on nonlinearity
T1  - Instability region in models of nonlinear reaction systems. The Stoichiometric Network Analysis
SP  - 145
EP  - 159
UR  - https://hdl.handle.net/21.15107/rcub_cer_3746
ER  - 

@conference{
author = "Čupić, Željko and Maćešić, Stevan and Kolar-Anić, Ljiljana",
year = "2020",
abstract = "Stability analysis of reaction systems is described by the application of the Stoichiometric Network Analysis to the three-variable-autocatalator. Although simple, this model is complex enough to describe complex forms of nonlinear dynamics phenomena, like mixed-mode oscillations and chaos. Therefore, stability analysis of such model is not a trivial task. Using the Stoichiometric Network Analysis for this purpose makes the process clear and leads to the reliable result.
The method is described briefly in few general steps and all of them are further clarified through the application to the chosen example. First, the reaction rates in steady state are decomposed to contributions of independent pathways, called extreme currents. Then, linearized operator is constructed. Finally, through the analysis of the principal minors of the essential part of this operator, simple stability criterion is identified.",
publisher = "Serbian academy of nonlinear sciences",
journal = "Proceedings - 1st Conference on nonlinearity",
title = "Instability region in models of nonlinear reaction systems. The Stoichiometric Network Analysis",
pages = "145-159",
url = "https://hdl.handle.net/21.15107/rcub_cer_3746"
}

Čupić, Ž., Maćešić, S.,& Kolar-Anić, L.. (2020). Instability region in models of nonlinear reaction systems. The Stoichiometric Network Analysis. in Proceedings - 1st Conference on nonlinearity
Serbian academy of nonlinear sciences., 145-159.
https://hdl.handle.net/21.15107/rcub_cer_3746

Čupić Ž, Maćešić S, Kolar-Anić L. Instability region in models of nonlinear reaction systems. The Stoichiometric Network Analysis. in Proceedings - 1st Conference on nonlinearity. 2020;:145-159.
https://hdl.handle.net/21.15107/rcub_cer_3746 .

Čupić, Željko, Maćešić, Stevan, Kolar-Anić, Ljiljana, "Instability region in models of nonlinear reaction systems. The Stoichiometric Network Analysis" in Proceedings - 1st Conference on nonlinearity (2020):145-159,
https://hdl.handle.net/21.15107/rcub_cer_3746 .

TY  - JOUR
AU  - Čupić, Željko
AU  - Ivanović-Šašić, Ana
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3024
AB  - The application of alternating current is advantageous in energy transfer over long distances. It is a well-known fact now, but subject of long conflict in the era of pioneering works in electric power production. There are also some processes in physical chemistry, organic and inorganic chemistry, in biochemistry and related sciences, which take place in opposite directions, with consecutive alternations in time. However, the very existence of alternate reactions, now known as the oscillatory or oscillating reactions, has long been disputed because it was thought that it is contrary
to the basic principles of thermodynamics. Nevertheless, according to our knowledge, there are no oscillatory reactions without catalytic loop as the essential part of a mechanism. There could be a fundamental rule that catalysis is necessary to generate oscillations in concentrations and reaction rates. Particularly, homogeneous oscillatory reactions are often subject of research as relatively simple systems with good chance to clearly define feedbacks responsible for instability phenomena.
However, oscillations can at least equally often be found in heterogeneous catalytic
reactions. Recently, changes in product selectivity was proved when Pd catalyzed
carbonylation of phenylacetylene was moved to the oscillatory dynamic state. With
this simple result, the doors are now open for wide spectrum of research projects
and applications.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Alternating catalytic reactions
VL  - 126
IS  - 2
SP  - 577
EP  - 586
DO  - 10.1007/s11144-018-1501-2
ER  - 

@article{
author = "Čupić, Željko and Ivanović-Šašić, Ana",
year = "2019",
abstract = "The application of alternating current is advantageous in energy transfer over long distances. It is a well-known fact now, but subject of long conflict in the era of pioneering works in electric power production. There are also some processes in physical chemistry, organic and inorganic chemistry, in biochemistry and related sciences, which take place in opposite directions, with consecutive alternations in time. However, the very existence of alternate reactions, now known as the oscillatory or oscillating reactions, has long been disputed because it was thought that it is contrary
to the basic principles of thermodynamics. Nevertheless, according to our knowledge, there are no oscillatory reactions without catalytic loop as the essential part of a mechanism. There could be a fundamental rule that catalysis is necessary to generate oscillations in concentrations and reaction rates. Particularly, homogeneous oscillatory reactions are often subject of research as relatively simple systems with good chance to clearly define feedbacks responsible for instability phenomena.
However, oscillations can at least equally often be found in heterogeneous catalytic
reactions. Recently, changes in product selectivity was proved when Pd catalyzed
carbonylation of phenylacetylene was moved to the oscillatory dynamic state. With
this simple result, the doors are now open for wide spectrum of research projects
and applications.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Alternating catalytic reactions",
volume = "126",
number = "2",
pages = "577-586",
doi = "10.1007/s11144-018-1501-2"
}

Čupić, Ž.,& Ivanović-Šašić, A.. (2019). Alternating catalytic reactions. in Reaction Kinetics, Mechanisms and Catalysis
Springer., 126(2), 577-586.
https://doi.org/10.1007/s11144-018-1501-2

Čupić Ž, Ivanović-Šašić A. Alternating catalytic reactions. in Reaction Kinetics, Mechanisms and Catalysis. 2019;126(2):577-586.
doi:10.1007/s11144-018-1501-2 .

Čupić, Željko, Ivanović-Šašić, Ana, "Alternating catalytic reactions" in Reaction Kinetics, Mechanisms and Catalysis, 126, no. 2 (2019):577-586,
https://doi.org/10.1007/s11144-018-1501-2 . .

TY  - JOUR
AU  - Mojović, Zorica
AU  - Novaković, Tatjana
AU  - Mojović, Miloš
AU  - Barudžija, Tanja
AU  - Mitrić, Miodrag
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3248
AB  - Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100°C in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100°C. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity.
AB  - Прахови алумине, без додатка и са додатком никла, синтетисани су сол-гел методом и жарени на 500, 900 и 1100 oC с циљем да се добију мезопорозне структуре са високом специфичном површином, применљиве у каталитичке сврхе. Карактеризација узорака вршена је са XRD, EPR и EIS спектроскопијом. XRD анализа показала је да и додатак Ni2+-јона, као и температура жарења, утичу на структурне особине добијених композита. EPR анализом утврђено је присуство Fe3+-јона у траговима, окси-дефеката у алумини и Ni2+-јона у тетраедарским позицијама у узорцима жареним на 1100 oC. Импеданса стакло-карбон електроде модификоване нафион/алумином, зависила је од комбинованог ефекта порозне структуре и површинских карактеристика узорака алумине. Електрохемијско понашање модификоване стакло-карбон електроде испитивано је у 0.5M раствору NaOH, без и са метанолом. Електрохемијска активност никл-алумина композита диктирана је присуством NiO фазе.
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function
VL  - 51
IS  - 3
SP  - 339
EP  - 351
DO  - 10.2298/SOS1903339M
ER  - 

@article{
author = "Mojović, Zorica and Novaković, Tatjana and Mojović, Miloš and Barudžija, Tanja and Mitrić, Miodrag",
year = "2019",
abstract = "Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100°C in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100°C. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity., Прахови алумине, без додатка и са додатком никла, синтетисани су сол-гел методом и жарени на 500, 900 и 1100 oC с циљем да се добију мезопорозне структуре са високом специфичном површином, применљиве у каталитичке сврхе. Карактеризација узорака вршена је са XRD, EPR и EIS спектроскопијом. XRD анализа показала је да и додатак Ni2+-јона, као и температура жарења, утичу на структурне особине добијених композита. EPR анализом утврђено је присуство Fe3+-јона у траговима, окси-дефеката у алумини и Ni2+-јона у тетраедарским позицијама у узорцима жареним на 1100 oC. Импеданса стакло-карбон електроде модификоване нафион/алумином, зависила је од комбинованог ефекта порозне структуре и површинских карактеристика узорака алумине. Електрохемијско понашање модификоване стакло-карбон електроде испитивано је у 0.5M раствору NaOH, без и са метанолом. Електрохемијска активност никл-алумина композита диктирана је присуством NiO фазе.",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function",
volume = "51",
number = "3",
pages = "339-351",
doi = "10.2298/SOS1903339M"
}

Mojović, Z., Novaković, T., Mojović, M., Barudžija, T.,& Mitrić, M.. (2019). Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 51(3), 339-351.
https://doi.org/10.2298/SOS1903339M

Mojović Z, Novaković T, Mojović M, Barudžija T, Mitrić M. Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering. 2019;51(3):339-351.
doi:10.2298/SOS1903339M .

Mojović, Zorica, Novaković, Tatjana, Mojović, Miloš, Barudžija, Tanja, Mitrić, Miodrag, "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function" in Science of Sintering, 51, no. 3 (2019):339-351,
https://doi.org/10.2298/SOS1903339M . .

TY  - CONF
AU  - Maksimović, Tijana
AU  - Maksimović, Jelena
AU  - Mudrinić, Tihana
AU  - Nedić, Zoran
AU  - Joksović, Ljubinka
AU  - Mojović, Zorica
AU  - Pagnacco, Maja
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6969
AB  - The Briggs-Rauscher (BR) reaction is an oscillating reaction in which the oxidation of malonic acid (CH2(COOH)2) in the presence of hydrogen peroxide (H2O2) and potassium iodate (KIO3) is catalyzed with a metal ion (usually manganese ion (Mn2+)) in an acid solution (HClO4). It is well known that the BR reaction represents a chemical system that is extremely sensitive to the addition of different types of analytes. Every change in oscillatory dynamics, caused by analyte addition, can be used for the assessment of analyte concentration, as well as its potential antiradical activities. The basic idea of this work is to use the oscillatory reaction, as an unusual and novel system for distinguishing different types of insoluble materials such as bronzes, specifically phosphate tungsten bronze (PWB) and phosphate molybdenum bronze (PMoB). Regarding the results obtained, the increasing mass of PWB leads to a significant decrease of BR oscillatory time, while the addition of PMoB has not affected the BR reaction dynamics. The obtained different behavior of PWB and PMoB introduced the BR reaction as a systemdetector for these two types of bronzes. In order to investigate the mechanism of bronzes action in BR oscillatory reaction, the pH and electric conductivity measurements, as well as inductively coupled plasma and the cyclic voltammetry measurements were done. This work extends the practical aspect of the BR reaction for the examination of solid materials. Furthermore, the obtained results open a new section of oscillatory reaction usage in material science and catalysis in general.
PB  - Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts - Eighteenth Young Researchers’ Conference - Materials Science and Engineering, December 4-6 2019,  Belgrade, Serbia
T1  - The Briggs-Rauscher reaction as an unusual detector for a different type of bronzes
SP  - 49
EP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_cer_6969
ER  - 

@conference{
author = "Maksimović, Tijana and Maksimović, Jelena and Mudrinić, Tihana and Nedić, Zoran and Joksović, Ljubinka and Mojović, Zorica and Pagnacco, Maja",
year = "2019",
abstract = "The Briggs-Rauscher (BR) reaction is an oscillating reaction in which the oxidation of malonic acid (CH2(COOH)2) in the presence of hydrogen peroxide (H2O2) and potassium iodate (KIO3) is catalyzed with a metal ion (usually manganese ion (Mn2+)) in an acid solution (HClO4). It is well known that the BR reaction represents a chemical system that is extremely sensitive to the addition of different types of analytes. Every change in oscillatory dynamics, caused by analyte addition, can be used for the assessment of analyte concentration, as well as its potential antiradical activities. The basic idea of this work is to use the oscillatory reaction, as an unusual and novel system for distinguishing different types of insoluble materials such as bronzes, specifically phosphate tungsten bronze (PWB) and phosphate molybdenum bronze (PMoB). Regarding the results obtained, the increasing mass of PWB leads to a significant decrease of BR oscillatory time, while the addition of PMoB has not affected the BR reaction dynamics. The obtained different behavior of PWB and PMoB introduced the BR reaction as a systemdetector for these two types of bronzes. In order to investigate the mechanism of bronzes action in BR oscillatory reaction, the pH and electric conductivity measurements, as well as inductively coupled plasma and the cyclic voltammetry measurements were done. This work extends the practical aspect of the BR reaction for the examination of solid materials. Furthermore, the obtained results open a new section of oscillatory reaction usage in material science and catalysis in general.",
publisher = "Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts - Eighteenth Young Researchers’ Conference - Materials Science and Engineering, December 4-6 2019,  Belgrade, Serbia",
title = "The Briggs-Rauscher reaction as an unusual detector for a different type of bronzes",
pages = "49-49",
url = "https://hdl.handle.net/21.15107/rcub_cer_6969"
}

Maksimović, T., Maksimović, J., Mudrinić, T., Nedić, Z., Joksović, L., Mojović, Z.,& Pagnacco, M.. (2019). The Briggs-Rauscher reaction as an unusual detector for a different type of bronzes. in Program and the Book of Abstracts - Eighteenth Young Researchers’ Conference - Materials Science and Engineering, December 4-6 2019,  Belgrade, Serbia
Institute of Technical Sciences of SASA., 49-49.
https://hdl.handle.net/21.15107/rcub_cer_6969

Maksimović T, Maksimović J, Mudrinić T, Nedić Z, Joksović L, Mojović Z, Pagnacco M. The Briggs-Rauscher reaction as an unusual detector for a different type of bronzes. in Program and the Book of Abstracts - Eighteenth Young Researchers’ Conference - Materials Science and Engineering, December 4-6 2019,  Belgrade, Serbia. 2019;:49-49.
https://hdl.handle.net/21.15107/rcub_cer_6969 .

Maksimović, Tijana, Maksimović, Jelena, Mudrinić, Tihana, Nedić, Zoran, Joksović, Ljubinka, Mojović, Zorica, Pagnacco, Maja, "The Briggs-Rauscher reaction as an unusual detector for a different type of bronzes" in Program and the Book of Abstracts - Eighteenth Young Researchers’ Conference - Materials Science and Engineering, December 4-6 2019,  Belgrade, Serbia (2019):49-49,
https://hdl.handle.net/21.15107/rcub_cer_6969 .

TY  - JOUR
AU  - Đurović, Sanja
AU  - Dragičević, Vesna
AU  - Waisi, Hadi
AU  - Pagnacco, Maja
AU  - Luković, Nevena
AU  - Knežević-Jugović, Zorica
AU  - Nikolić, Bogdan
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3392
AB  - Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food.
PB  - Serbian Biological Society
T2  - Archives of Biological Sciences
T1  - Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products
VL  - 71
IS  - 3
SP  - 425
EP  - 434
DO  - 10.2298/ABS190123024D
ER  - 

@article{
author = "Đurović, Sanja and Dragičević, Vesna and Waisi, Hadi and Pagnacco, Maja and Luković, Nevena and Knežević-Jugović, Zorica and Nikolić, Bogdan",
year = "2019",
abstract = "Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food.",
publisher = "Serbian Biological Society",
journal = "Archives of Biological Sciences",
title = "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products",
volume = "71",
number = "3",
pages = "425-434",
doi = "10.2298/ABS190123024D"
}

Đurović, S., Dragičević, V., Waisi, H., Pagnacco, M., Luković, N., Knežević-Jugović, Z.,& Nikolić, B.. (2019). Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences
Serbian Biological Society., 71(3), 425-434.
https://doi.org/10.2298/ABS190123024D

Đurović S, Dragičević V, Waisi H, Pagnacco M, Luković N, Knežević-Jugović Z, Nikolić B. Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences. 2019;71(3):425-434.
doi:10.2298/ABS190123024D .

Đurović, Sanja, Dragičević, Vesna, Waisi, Hadi, Pagnacco, Maja, Luković, Nevena, Knežević-Jugović, Zorica, Nikolić, Bogdan, "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products" in Archives of Biological Sciences, 71, no. 3 (2019):425-434,
https://doi.org/10.2298/ABS190123024D . .

TY  - JOUR
AU  - Pagnacco, Maja
AU  - Maksimović, Jelena
AU  - Mudrinić, Tihana
AU  - Mojović, Zorica
AU  - Nedić, Zoran P.
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3058
AB  - Briggs-Rauscher (BR) oscillatory reaction is a chemical system very sensitive to different analyte addition. Changes in oscillatory dynamics, by analyte addition, could be successfully used for the determination of analyte concentration, as well as for its antioxidative/antiradical activity assessment. In this work, the BR reaction is used as a system detector for distinguishing solid unsolvable materials, such as phosphate tungsten bronze (PWB) and phosphate molybdenum bronze (PMoB), obtained by thermal treatment. The addition of different masses of PWB in BR reaction decreases its oscillation time, while the addition of different masses of PMoB had no effects on the BR oscillation time. Additionally, the BR oscillation time is the linear function of added PWB mass. The mechanism of bronzes action is investigated by using pH and electric conductivity measurements, as well as inductively coupled plasma and the cyclic voltammetry measurements, and it can be ascribed to PWB better catalytic activity then PMoB, under BR reaction condition. This work extends the practical aspect of the BR reaction for testing solid (insoluble) materials, and opening the possibility of using oscillatory reactions in material science and catalysis, in general.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Briggs-Rauscher reaction as a novel electrochemical detector for phosphate tungsten and phosphate molybdenum bronzes
VL  - 849
SP  - 113369
DO  - 10.1016/j.jelechem.2019.113369
ER  - 

@article{
author = "Pagnacco, Maja and Maksimović, Jelena and Mudrinić, Tihana and Mojović, Zorica and Nedić, Zoran P.",
year = "2019",
abstract = "Briggs-Rauscher (BR) oscillatory reaction is a chemical system very sensitive to different analyte addition. Changes in oscillatory dynamics, by analyte addition, could be successfully used for the determination of analyte concentration, as well as for its antioxidative/antiradical activity assessment. In this work, the BR reaction is used as a system detector for distinguishing solid unsolvable materials, such as phosphate tungsten bronze (PWB) and phosphate molybdenum bronze (PMoB), obtained by thermal treatment. The addition of different masses of PWB in BR reaction decreases its oscillation time, while the addition of different masses of PMoB had no effects on the BR oscillation time. Additionally, the BR oscillation time is the linear function of added PWB mass. The mechanism of bronzes action is investigated by using pH and electric conductivity measurements, as well as inductively coupled plasma and the cyclic voltammetry measurements, and it can be ascribed to PWB better catalytic activity then PMoB, under BR reaction condition. This work extends the practical aspect of the BR reaction for testing solid (insoluble) materials, and opening the possibility of using oscillatory reactions in material science and catalysis, in general.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Briggs-Rauscher reaction as a novel electrochemical detector for phosphate tungsten and phosphate molybdenum bronzes",
volume = "849",
pages = "113369",
doi = "10.1016/j.jelechem.2019.113369"
}

Pagnacco, M., Maksimović, J., Mudrinić, T., Mojović, Z.,& Nedić, Z. P.. (2019). Briggs-Rauscher reaction as a novel electrochemical detector for phosphate tungsten and phosphate molybdenum bronzes. in Journal of Electroanalytical Chemistry
Elsevier., 849, 113369.
https://doi.org/10.1016/j.jelechem.2019.113369

Pagnacco M, Maksimović J, Mudrinić T, Mojović Z, Nedić ZP. Briggs-Rauscher reaction as a novel electrochemical detector for phosphate tungsten and phosphate molybdenum bronzes. in Journal of Electroanalytical Chemistry. 2019;849:113369.
doi:10.1016/j.jelechem.2019.113369 .

Pagnacco, Maja, Maksimović, Jelena, Mudrinić, Tihana, Mojović, Zorica, Nedić, Zoran P., "Briggs-Rauscher reaction as a novel electrochemical detector for phosphate tungsten and phosphate molybdenum bronzes" in Journal of Electroanalytical Chemistry, 849 (2019):113369,
https://doi.org/10.1016/j.jelechem.2019.113369 . .

TY  - JOUR
AU  - Jakšić, Olga
AU  - Jakšić, Zoran
AU  - Rašljić, Milena
AU  - Kolar-Anić, Ljiljana
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2487
AB  - Starting from the fact that monocomponent adsorption, whether modeled by Lagergren or nonlinear Riccati equation, does not sustain oscillations, we speculate about the nature of multiple steady state states in multicomponent adsorption with second-order kinetics and about the possibility that multicomponent adsorption might exhibit oscillating behavior, in order to provide a tool for better discerning possible oscillations from inevitable fluctuations in experimental results or a tool for a better control of adsorption process far from equilibrium. We perform an analysis of stability of binary adsorption with second-order kinetics in multiple ways. We address perturbations around the steady state analytically, first in a classical way, then by introducing Langevin forces and analyzing the reaction flux and cross-correlations, then by applying the stochastic chemical master equation approach, and finally, numerically, by using stochastic simulation algorithms. Our results show that stationary states in this model are stable nodes. Hence, experimental results with purported oscillations in response should be addressed from the point of view of fluctuations and noise analysis.
PB  - Hindawi
T2  - Advances in Mathematical Physics
T1  - On Oscillations and Noise in Multicomponent Adsorption: The Nature of Multiple Stationary States
VL  - 2019
SP  - 7687643
DO  - 10.1155/2019/7687643
ER  - 

@article{
author = "Jakšić, Olga and Jakšić, Zoran and Rašljić, Milena and Kolar-Anić, Ljiljana",
year = "2019",
abstract = "Starting from the fact that monocomponent adsorption, whether modeled by Lagergren or nonlinear Riccati equation, does not sustain oscillations, we speculate about the nature of multiple steady state states in multicomponent adsorption with second-order kinetics and about the possibility that multicomponent adsorption might exhibit oscillating behavior, in order to provide a tool for better discerning possible oscillations from inevitable fluctuations in experimental results or a tool for a better control of adsorption process far from equilibrium. We perform an analysis of stability of binary adsorption with second-order kinetics in multiple ways. We address perturbations around the steady state analytically, first in a classical way, then by introducing Langevin forces and analyzing the reaction flux and cross-correlations, then by applying the stochastic chemical master equation approach, and finally, numerically, by using stochastic simulation algorithms. Our results show that stationary states in this model are stable nodes. Hence, experimental results with purported oscillations in response should be addressed from the point of view of fluctuations and noise analysis.",
publisher = "Hindawi",
journal = "Advances in Mathematical Physics",
title = "On Oscillations and Noise in Multicomponent Adsorption: The Nature of Multiple Stationary States",
volume = "2019",
pages = "7687643",
doi = "10.1155/2019/7687643"
}

Jakšić, O., Jakšić, Z., Rašljić, M.,& Kolar-Anić, L.. (2019). On Oscillations and Noise in Multicomponent Adsorption: The Nature of Multiple Stationary States. in Advances in Mathematical Physics
Hindawi., 2019, 7687643.
https://doi.org/10.1155/2019/7687643

Jakšić O, Jakšić Z, Rašljić M, Kolar-Anić L. On Oscillations and Noise in Multicomponent Adsorption: The Nature of Multiple Stationary States. in Advances in Mathematical Physics. 2019;2019:7687643.
doi:10.1155/2019/7687643 .

Jakšić, Olga, Jakšić, Zoran, Rašljić, Milena, Kolar-Anić, Ljiljana, "On Oscillations and Noise in Multicomponent Adsorption: The Nature of Multiple Stationary States" in Advances in Mathematical Physics, 2019 (2019):7687643,
https://doi.org/10.1155/2019/7687643 . .

TY  - JOUR
AU  - Maćešić, Stevan
AU  - Čupić, Željko
AU  - Novaković, Katarina
AU  - Parker, Julie
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2999
AB  - The reaction mechanism of palladium-catalysed oscillatory carbonylation of
poly(ethylene glycol)methyl ether acetylene (PEGA) was examined by stoichiometric
network analysis (SNA) of the stability of the dynamic states. The previously published
simplified reaction network proposed to account for the experimentally observed results was
modified in order to obtain a more realistic reaction network for the investigated process. In the modified reaction network, the direct autocatalytic steps were replaced with autocatalytic
loops. In this procedure some complex net reactions had to be resolved, while some new
reactions had to be taken into account, altering the reaction mechanism responsible for the
appearance of oscillation. Moreover, in the modified reaction network, the expressions for
reaction rates correspond formally to their stoichiometry in accordance to mass action
kinetics. The SNA identified the instability condition which was further tested and confirmed
by numerical simulation.
PB  - University of Kragujevac
T2  - Match: Communications in Mathematical and in Computer Chemistry
T1  - Oscillatory Carbonylation of Poly(Ethylene Glycol)Methyl Ether Acetylene. Modelling of Reaction Mechanism and Stoichiometric Network Stability Analysis
VL  - 81
SP  - 5
EP  - 34
UR  - https://hdl.handle.net/21.15107/rcub_cer_2999
ER  - 

@article{
author = "Maćešić, Stevan and Čupić, Željko and Novaković, Katarina and Parker, Julie and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2019",
abstract = "The reaction mechanism of palladium-catalysed oscillatory carbonylation of
poly(ethylene glycol)methyl ether acetylene (PEGA) was examined by stoichiometric
network analysis (SNA) of the stability of the dynamic states. The previously published
simplified reaction network proposed to account for the experimentally observed results was
modified in order to obtain a more realistic reaction network for the investigated process. In the modified reaction network, the direct autocatalytic steps were replaced with autocatalytic
loops. In this procedure some complex net reactions had to be resolved, while some new
reactions had to be taken into account, altering the reaction mechanism responsible for the
appearance of oscillation. Moreover, in the modified reaction network, the expressions for
reaction rates correspond formally to their stoichiometry in accordance to mass action
kinetics. The SNA identified the instability condition which was further tested and confirmed
by numerical simulation.",
publisher = "University of Kragujevac",
journal = "Match: Communications in Mathematical and in Computer Chemistry",
title = "Oscillatory Carbonylation of Poly(Ethylene Glycol)Methyl Ether Acetylene. Modelling of Reaction Mechanism and Stoichiometric Network Stability Analysis",
volume = "81",
pages = "5-34",
url = "https://hdl.handle.net/21.15107/rcub_cer_2999"
}

Maćešić, S., Čupić, Ž., Novaković, K., Parker, J., Anić, S.,& Kolar-Anić, L.. (2019). Oscillatory Carbonylation of Poly(Ethylene Glycol)Methyl Ether Acetylene. Modelling of Reaction Mechanism and Stoichiometric Network Stability Analysis. in Match: Communications in Mathematical and in Computer Chemistry
University of Kragujevac., 81, 5-34.
https://hdl.handle.net/21.15107/rcub_cer_2999

Maćešić S, Čupić Ž, Novaković K, Parker J, Anić S, Kolar-Anić L. Oscillatory Carbonylation of Poly(Ethylene Glycol)Methyl Ether Acetylene. Modelling of Reaction Mechanism and Stoichiometric Network Stability Analysis. in Match: Communications in Mathematical and in Computer Chemistry. 2019;81:5-34.
https://hdl.handle.net/21.15107/rcub_cer_2999 .

Maćešić, Stevan, Čupić, Željko, Novaković, Katarina, Parker, Julie, Anić, Slobodan, Kolar-Anić, Ljiljana, "Oscillatory Carbonylation of Poly(Ethylene Glycol)Methyl Ether Acetylene. Modelling of Reaction Mechanism and Stoichiometric Network Stability Analysis" in Match: Communications in Mathematical and in Computer Chemistry, 81 (2019):5-34,
https://hdl.handle.net/21.15107/rcub_cer_2999 .

TY  - CHAP
AU  - Lončarević, Davor
AU  - Čupić, Željko
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3487
AB  - The use of solid particles as a catalyst in a certain reaction system results in emergence of heterogeneous catalysis. More active catalyst is obtained by resizing the particles up to nanodimension. Nanocatalysts are the most active catalysts considering minimal size which gives maximal activity. Main drawbacks of nanocatalysis will be presented in this chapter through synthesis, characterization, and activity-selectivity relations. Special attention is given to catalysts for application in environmental protection and photocatalytic hydrogen production.
PB  - Elsevier
T2  - Industrial Applications of Nanomaterials
T1  - The perspective of using nanocatalysts in the environmental requirements and energy needs of industry
SP  - 91
EP  - 122
DO  - 10.1016/B978-0-12-815749-7.00004-9
ER  - 

@inbook{
author = "Lončarević, Davor and Čupić, Željko",
year = "2019",
abstract = "The use of solid particles as a catalyst in a certain reaction system results in emergence of heterogeneous catalysis. More active catalyst is obtained by resizing the particles up to nanodimension. Nanocatalysts are the most active catalysts considering minimal size which gives maximal activity. Main drawbacks of nanocatalysis will be presented in this chapter through synthesis, characterization, and activity-selectivity relations. Special attention is given to catalysts for application in environmental protection and photocatalytic hydrogen production.",
publisher = "Elsevier",
journal = "Industrial Applications of Nanomaterials",
booktitle = "The perspective of using nanocatalysts in the environmental requirements and energy needs of industry",
pages = "91-122",
doi = "10.1016/B978-0-12-815749-7.00004-9"
}

Lončarević, D.,& Čupić, Ž.. (2019). The perspective of using nanocatalysts in the environmental requirements and energy needs of industry. in Industrial Applications of Nanomaterials
Elsevier., 91-122.
https://doi.org/10.1016/B978-0-12-815749-7.00004-9

Lončarević D, Čupić Ž. The perspective of using nanocatalysts in the environmental requirements and energy needs of industry. in Industrial Applications of Nanomaterials. 2019;:91-122.
doi:10.1016/B978-0-12-815749-7.00004-9 .

Lončarević, Davor, Čupić, Željko, "The perspective of using nanocatalysts in the environmental requirements and energy needs of industry" in Industrial Applications of Nanomaterials (2019):91-122,
https://doi.org/10.1016/B978-0-12-815749-7.00004-9 . .