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Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate

Ognjanović, Miloš; Stanković, Dalibor M.; Jaćimović, Željko K.; Kosović-Perutović, Milica; Mariano, José F. M. L.; Krehula, Stjepko; Musić, Svetozar; Antić, Bratislav

TY  - JOUR
AU  - Ognjanović, Miloš
AU  - Stanković, Dalibor M.
AU  - Jaćimović, Željko K.
AU  - Kosović-Perutović, Milica
AU  - Mariano, José F. M. L.
AU  - Krehula, Stjepko
AU  - Musić, Svetozar
AU  - Antić, Bratislav
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10215
AB  - Nickel acetate tetrahydrate (NAT) sample series were used to modify screen-printed carbon electrodes (SPCE). The samples were hybrid Ni/NiO nanocomposites, where the NiO phase increased with an applied treatment temperature. Results of electrochemical measurements pointed that the Ni/NiO550/SPCE-modified electrode had the best analytical performance toward the detection of riboflavin (RF). The Ni/NiO550/SPCE-based sensor showed linear response with RF in the concentration range of 0.5–75 μM and 0.15 μM LOD in BRBS. Sensor offered fast response time, good repeatability, and selectivity with an RSD of 1.4 %. Our results show that the Ni:NiO nanocomposite ratio strongly influenced the electroanalytical performance of SPCE.
T2  - Electroanalysis
T1  - Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate
DO  - 10.1002/elan.202100602
ER  - 
@article{
author = "Ognjanović, Miloš and Stanković, Dalibor M. and Jaćimović, Željko K. and Kosović-Perutović, Milica and Mariano, José F. M. L. and Krehula, Stjepko and Musić, Svetozar and Antić, Bratislav",
abstract = "Nickel acetate tetrahydrate (NAT) sample series were used to modify screen-printed carbon electrodes (SPCE). The samples were hybrid Ni/NiO nanocomposites, where the NiO phase increased with an applied treatment temperature. Results of electrochemical measurements pointed that the Ni/NiO550/SPCE-modified electrode had the best analytical performance toward the detection of riboflavin (RF). The Ni/NiO550/SPCE-based sensor showed linear response with RF in the concentration range of 0.5–75 μM and 0.15 μM LOD in BRBS. Sensor offered fast response time, good repeatability, and selectivity with an RSD of 1.4 %. Our results show that the Ni:NiO nanocomposite ratio strongly influenced the electroanalytical performance of SPCE.",
journal = "Electroanalysis",
title = "Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate",
doi = "10.1002/elan.202100602"
}
Ognjanović, M., Stanković, D. M., Jaćimović, Ž. K., Kosović-Perutović, M., Mariano, J. F. M. L., Krehula, S., Musić, S.,& Antić, B..Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate. in Electroanalysis.
https://doi.org/10.1002/elan.202100602
Ognjanović M, Stanković DM, Jaćimović ŽK, Kosović-Perutović M, Mariano JFML, Krehula S, Musić S, Antić B. Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate. in Electroanalysis..
doi:10.1002/elan.202100602 .
Ognjanović, Miloš, Stanković, Dalibor M., Jaćimović, Željko K., Kosović-Perutović, Milica, Mariano, José F. M. L., Krehula, Stjepko, Musić, Svetozar, Antić, Bratislav, "Construction of Sensor for Submicromolar Detection of Riboflavin by Surface Modification of SPCE with Thermal Degradation Products of Nickel Acetate Tetrahydrate" in Electroanalysis,
https://doi.org/10.1002/elan.202100602 . .
1

Novel boron-rich aluminum nitride advanced ceramic materials

Zagorac, Dejan; Zagorac, Jelena; Fonović, Matej; Prikhna, Tatiana; Matović, Branko

TY  - JOUR
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena
AU  - Fonović, Matej
AU  - Prikhna, Tatiana
AU  - Matović, Branko
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10399
AB  - Aluminum nitride (AlN) and boron nitride (BN) are well-known ceramic materials with numerous valuable properties, whereas recently there is a growing field of research on the AlN/BN advanced ceramic materials. Here, we present a study on boron-rich AlN, structural and electronic properties, and structure–property relationship. Several AlxB1−xN solid solutions (x = 1, .875, .75, and .625) have been investigated, and structure optimization has been performed for four different structure types: h-BN, wurtzite, sphalerite, and rock salt. First-principles calculations were performed using hybrid B3LYP functional. New modifications and compounds have been predicted as a function of boron concentration in AlN, and especially, interesting phase transitions were found at extreme pressure conditions. Electronic properties and band structures were computed, and the possibility for bandgap tuning has been discovered. The present study, and especially the structure–property relationship, gives new possibilities for bandgap engineering in boron-rich AlN electroceramic materials.
T2  - International Journal of Applied Ceramic Technology
T1  - Novel boron-rich aluminum nitride advanced ceramic materials
DO  - 10.1111/ijac.14152
ER  - 
@article{
author = "Zagorac, Dejan and Zagorac, Jelena and Fonović, Matej and Prikhna, Tatiana and Matović, Branko",
abstract = "Aluminum nitride (AlN) and boron nitride (BN) are well-known ceramic materials with numerous valuable properties, whereas recently there is a growing field of research on the AlN/BN advanced ceramic materials. Here, we present a study on boron-rich AlN, structural and electronic properties, and structure–property relationship. Several AlxB1−xN solid solutions (x = 1, .875, .75, and .625) have been investigated, and structure optimization has been performed for four different structure types: h-BN, wurtzite, sphalerite, and rock salt. First-principles calculations were performed using hybrid B3LYP functional. New modifications and compounds have been predicted as a function of boron concentration in AlN, and especially, interesting phase transitions were found at extreme pressure conditions. Electronic properties and band structures were computed, and the possibility for bandgap tuning has been discovered. The present study, and especially the structure–property relationship, gives new possibilities for bandgap engineering in boron-rich AlN electroceramic materials.",
journal = "International Journal of Applied Ceramic Technology",
title = "Novel boron-rich aluminum nitride advanced ceramic materials",
doi = "10.1111/ijac.14152"
}
Zagorac, D., Zagorac, J., Fonović, M., Prikhna, T.,& Matović, B..Novel boron-rich aluminum nitride advanced ceramic materials. in International Journal of Applied Ceramic Technology.
https://doi.org/10.1111/ijac.14152
Zagorac D, Zagorac J, Fonović M, Prikhna T, Matović B. Novel boron-rich aluminum nitride advanced ceramic materials. in International Journal of Applied Ceramic Technology..
doi:10.1111/ijac.14152 .
Zagorac, Dejan, Zagorac, Jelena, Fonović, Matej, Prikhna, Tatiana, Matović, Branko, "Novel boron-rich aluminum nitride advanced ceramic materials" in International Journal of Applied Ceramic Technology,
https://doi.org/10.1111/ijac.14152 . .

Hypothyroidism and Risk of Cardiovascular Disease

Gluvić, Zoran; Zafirović, Sonja; Obradović, Milan M.; Sudar-Milovanović, Emina; Rizzo, Manfredi; Isenović, Esma R.

TY  - JOUR
AU  - Gluvić, Zoran
AU  - Zafirović, Sonja
AU  - Obradović, Milan M.
AU  - Sudar-Milovanović, Emina
AU  - Rizzo, Manfredi
AU  - Isenović, Esma R.
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10409
AB  - Thyroid hormones (TH) have a significant impact on cellular oxidative metabolism. Besides that,they maintain vascular homeostasis by positive effects on endothelial and vascular smooth muscle cells. Subclinical(SCH) and clinical (CH) hypothyroidism influences target organs by changing their morphology andfunction and impaired blood and oxygen supply induced by accelerated atherosclerosis. The increased risk ofacceleration and extension of atherosclerosis in patients with SCH and CH could be explained by dyslipidemia,diastolic hypertension, increased arterial stiffness, endothelial dysfunction, and altered blood coagulation. Instabilityof atherosclerotic plaque in hypothyroidism could cause excessive activity of the elements of innateimmunity, which are characterized by the significant presence of macrophages in atherosclerotic plaques, increasednuclear factor kappa B (NFkB) expression, and elevated levels of tumor necrosis factor α (TNF-α) andmatrix metalloproteinase (MMP) 9, with reduced interstitial collagen; all of them together creates inflammationmilieu, resulting in plaque rupture. Optimal substitution by levothyroxine (LT4) restores biochemical euthyroidism.In postmenopausal women and elderly patients with hypothyroidism and associated vascularcomorbidity, excessive LT4 substitution could lead to atrial rhythm disorders and osteoporosis. Therefore, it isof interest to maintain thyroid-stimulating hormone (TSH) levels in the reference range, thus eliminating thedeleterious effects of lower or higher TSH levels on the cardiovascular system. This review summarizes the recentliterature on subclinical and clinical hypothyroidism and atherosclerotic cardiovascular disease and discussesthe effects of LT4 replacement therapy on restoring biochemical euthyroidism and atherosclerosis processes.
T2  - Current Pharmaceutical Design
T1  - Hypothyroidism and Risk of Cardiovascular Disease
VL  - 28
IS  - 25
SP  - 2065
EP  - 2072
DO  - 10.2174/1381612828666220620160516
ER  - 
@article{
author = "Gluvić, Zoran and Zafirović, Sonja and Obradović, Milan M. and Sudar-Milovanović, Emina and Rizzo, Manfredi and Isenović, Esma R.",
abstract = "Thyroid hormones (TH) have a significant impact on cellular oxidative metabolism. Besides that,they maintain vascular homeostasis by positive effects on endothelial and vascular smooth muscle cells. Subclinical(SCH) and clinical (CH) hypothyroidism influences target organs by changing their morphology andfunction and impaired blood and oxygen supply induced by accelerated atherosclerosis. The increased risk ofacceleration and extension of atherosclerosis in patients with SCH and CH could be explained by dyslipidemia,diastolic hypertension, increased arterial stiffness, endothelial dysfunction, and altered blood coagulation. Instabilityof atherosclerotic plaque in hypothyroidism could cause excessive activity of the elements of innateimmunity, which are characterized by the significant presence of macrophages in atherosclerotic plaques, increasednuclear factor kappa B (NFkB) expression, and elevated levels of tumor necrosis factor α (TNF-α) andmatrix metalloproteinase (MMP) 9, with reduced interstitial collagen; all of them together creates inflammationmilieu, resulting in plaque rupture. Optimal substitution by levothyroxine (LT4) restores biochemical euthyroidism.In postmenopausal women and elderly patients with hypothyroidism and associated vascularcomorbidity, excessive LT4 substitution could lead to atrial rhythm disorders and osteoporosis. Therefore, it isof interest to maintain thyroid-stimulating hormone (TSH) levels in the reference range, thus eliminating thedeleterious effects of lower or higher TSH levels on the cardiovascular system. This review summarizes the recentliterature on subclinical and clinical hypothyroidism and atherosclerotic cardiovascular disease and discussesthe effects of LT4 replacement therapy on restoring biochemical euthyroidism and atherosclerosis processes.",
journal = "Current Pharmaceutical Design",
title = "Hypothyroidism and Risk of Cardiovascular Disease",
volume = "28",
number = "25",
pages = "2065-2072",
doi = "10.2174/1381612828666220620160516"
}
Gluvić, Z., Zafirović, S., Obradović, M. M., Sudar-Milovanović, E., Rizzo, M.,& Isenović, E. R..Hypothyroidism and Risk of Cardiovascular Disease. in Current Pharmaceutical Design, 28(25), 2065-2072.
https://doi.org/10.2174/1381612828666220620160516
Gluvić Z, Zafirović S, Obradović MM, Sudar-Milovanović E, Rizzo M, Isenović ER. Hypothyroidism and Risk of Cardiovascular Disease. in Current Pharmaceutical Design.28(25):2065-2072.
doi:10.2174/1381612828666220620160516 .
Gluvić, Zoran, Zafirović, Sonja, Obradović, Milan M., Sudar-Milovanović, Emina, Rizzo, Manfredi, Isenović, Esma R., "Hypothyroidism and Risk of Cardiovascular Disease" in Current Pharmaceutical Design, 28, no. 25:2065-2072,
https://doi.org/10.2174/1381612828666220620160516 . .

Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle

Đurić, Tamara; Kuveljić, Jovana; Đorđević, Ana; Dekleva, Milica; Stanković, Goran; Stanković, Aleksandra; Živković, Maja

TY  - JOUR
AU  - Đurić, Tamara
AU  - Kuveljić, Jovana
AU  - Đorđević, Ana
AU  - Dekleva, Milica
AU  - Stanković, Goran
AU  - Stanković, Aleksandra
AU  - Živković, Maja
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10382
AB  - Background Myocardial infarction (MI) leads to ischemia and afterward to left ventricular (LV) remodeling. Matrix metalloproteinase−1 (MMP1) and −3 (MMP3) belong to the family of endopeptidases and together they can dissolve most of the components of the extracellular matrix. MMP1 and MMP3 variants have been investigated solely in association with ischemic heart disease and LV dysfunction, but not in haplotype. The aims of this study were to investigate the association of haplotypes inferred from MMP1 rs1799750 (−1607 1G/2G; NC_000011.9:g.102670497del) and MMP3 rs35068180 (−1612 5A/6A; NC_000011.9:g.102715952dup) with MI and their effect on the change in echocardiographic parameters of LV structure and function in patients within 6 months after MI. Methods The study included 325 patients with the first MI and 283 healthy controls. Gene variants were detected by PCR-RFLP method. Parameters of LV structure and function were assessed by conventional 2D echocardiography, 3–5 days and 6 months after the first MI, on a subgroup of 160 patients. Haplotype analysis was performed with Thesias software. Results Haplotypes 2G-5A and 1G-6A were significantly and independently associated with MI compared with the reference haplotype 2G-6A (adjusted, p = 0.009 and p = 0.026, respectively). After Bonferroni correction for multiple testing, MMP1 and MMP3 haplotypes lost their association with the change in LV long diameter and stroke volume within 6 months after MI. Conclusion MMP1 and MMP3 haplotypes are strongly associated with MI. Further studies are needed to validate this result and to examine their association with echocardiographic parameters of LV structure and function after MI.
T2  - Molecular Genetics & Genomic Medicine
T1  - Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle
SP  - e2022
DO  - 10.1002/mgg3.2022
ER  - 
@article{
author = "Đurić, Tamara and Kuveljić, Jovana and Đorđević, Ana and Dekleva, Milica and Stanković, Goran and Stanković, Aleksandra and Živković, Maja",
abstract = "Background Myocardial infarction (MI) leads to ischemia and afterward to left ventricular (LV) remodeling. Matrix metalloproteinase−1 (MMP1) and −3 (MMP3) belong to the family of endopeptidases and together they can dissolve most of the components of the extracellular matrix. MMP1 and MMP3 variants have been investigated solely in association with ischemic heart disease and LV dysfunction, but not in haplotype. The aims of this study were to investigate the association of haplotypes inferred from MMP1 rs1799750 (−1607 1G/2G; NC_000011.9:g.102670497del) and MMP3 rs35068180 (−1612 5A/6A; NC_000011.9:g.102715952dup) with MI and their effect on the change in echocardiographic parameters of LV structure and function in patients within 6 months after MI. Methods The study included 325 patients with the first MI and 283 healthy controls. Gene variants were detected by PCR-RFLP method. Parameters of LV structure and function were assessed by conventional 2D echocardiography, 3–5 days and 6 months after the first MI, on a subgroup of 160 patients. Haplotype analysis was performed with Thesias software. Results Haplotypes 2G-5A and 1G-6A were significantly and independently associated with MI compared with the reference haplotype 2G-6A (adjusted, p = 0.009 and p = 0.026, respectively). After Bonferroni correction for multiple testing, MMP1 and MMP3 haplotypes lost their association with the change in LV long diameter and stroke volume within 6 months after MI. Conclusion MMP1 and MMP3 haplotypes are strongly associated with MI. Further studies are needed to validate this result and to examine their association with echocardiographic parameters of LV structure and function after MI.",
journal = "Molecular Genetics & Genomic Medicine",
title = "Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle",
pages = "e2022",
doi = "10.1002/mgg3.2022"
}
Đurić, T., Kuveljić, J., Đorđević, A., Dekleva, M., Stanković, G., Stanković, A.,& Živković, M..Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle. in Molecular Genetics & Genomic Medicine, e2022.
https://doi.org/10.1002/mgg3.2022
Đurić T, Kuveljić J, Đorđević A, Dekleva M, Stanković G, Stanković A, Živković M. Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle. in Molecular Genetics & Genomic Medicine.:e2022.
doi:10.1002/mgg3.2022 .
Đurić, Tamara, Kuveljić, Jovana, Đorđević, Ana, Dekleva, Milica, Stanković, Goran, Stanković, Aleksandra, Živković, Maja, "Association of MMP1 and MMP3 haplotypes with myocardial infarction and echocardiographic parameters of the left ventricle" in Molecular Genetics & Genomic Medicine:e2022,
https://doi.org/10.1002/mgg3.2022 . .

The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement

Validžić, Ivana; Lojpur, Vesna; Mitrić, Miodrag

TY  - JOUR
AU  - Validžić, Ivana
AU  - Lojpur, Vesna
AU  - Mitrić, Miodrag
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10395
AB  - The operating characteristics of a commercial monocrystalline and amorphous Si-solar cell for outdoor and indoor applications with and without the use of the water flow lens (WFL) system are explored and reported. The cells are tested in indoor conditions with halogen and tungsten lamps, and additionally, in outdoor sun radiation. Changes in the spectra, investigation of the influence of higher and lower lighting, and indirect cooling of the solar cell are possibilities in the application of the used WFL system. After achieving the highest level of development and improvement for the Si-solar cell, as well as approaching theoretical maximum efficiency, it is obvious that efficiency gains can be made by better understanding additional light effects. Measurements made on monocrystalline Si-solar cells revealed that in the “focal point position” where intensity increases (above standard testing conditions [STC]), independently of indoor or outdoor lighting, huge improvements in ISC and VOC were observed. It was found that the ratios of the short-circuit current (ISC) and the input light energy (Pinput) are 5.2 and 24.8 for artificial light and 4.9 and 17.6 for outdoor light, without and with the use of the WFL system, respectively. The same trend after applying the WFL system was observed for the amorphous Si cell, except those oscillations were more pronounced at lower light intensities (far lower than STC), as expected. The ratios of ISC and Pinput are in the range of 5.1–5.3 and 10.5–26.5 without and with the use of the WFL system.
T2  - Environmental Progress & Sustainable Energy
T1  - The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement
SP  - e13967
DO  - 10.1002/ep.13967
ER  - 
@article{
author = "Validžić, Ivana and Lojpur, Vesna and Mitrić, Miodrag",
abstract = "The operating characteristics of a commercial monocrystalline and amorphous Si-solar cell for outdoor and indoor applications with and without the use of the water flow lens (WFL) system are explored and reported. The cells are tested in indoor conditions with halogen and tungsten lamps, and additionally, in outdoor sun radiation. Changes in the spectra, investigation of the influence of higher and lower lighting, and indirect cooling of the solar cell are possibilities in the application of the used WFL system. After achieving the highest level of development and improvement for the Si-solar cell, as well as approaching theoretical maximum efficiency, it is obvious that efficiency gains can be made by better understanding additional light effects. Measurements made on monocrystalline Si-solar cells revealed that in the “focal point position” where intensity increases (above standard testing conditions [STC]), independently of indoor or outdoor lighting, huge improvements in ISC and VOC were observed. It was found that the ratios of the short-circuit current (ISC) and the input light energy (Pinput) are 5.2 and 24.8 for artificial light and 4.9 and 17.6 for outdoor light, without and with the use of the WFL system, respectively. The same trend after applying the WFL system was observed for the amorphous Si cell, except those oscillations were more pronounced at lower light intensities (far lower than STC), as expected. The ratios of ISC and Pinput are in the range of 5.1–5.3 and 10.5–26.5 without and with the use of the WFL system.",
journal = "Environmental Progress & Sustainable Energy",
title = "The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement",
pages = "e13967",
doi = "10.1002/ep.13967"
}
Validžić, I., Lojpur, V.,& Mitrić, M..The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement. in Environmental Progress & Sustainable Energy, e13967.
https://doi.org/10.1002/ep.13967
Validžić I, Lojpur V, Mitrić M. The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement. in Environmental Progress & Sustainable Energy.:e13967.
doi:10.1002/ep.13967 .
Validžić, Ivana, Lojpur, Vesna, Mitrić, Miodrag, "The influence of the water flow lens system on the operating characteristics of monocrystalline and amorphous Si-solar cells for outdoor and indoor use: The photovoltaic improvement" in Environmental Progress & Sustainable Energy:e13967,
https://doi.org/10.1002/ep.13967 . .

Role of catalyst supports in biocatalysis

Manikandan, Soumya Koippully; Giannakoudakis, Dimitrios A.; Prekodravac, Jovana; Nair, Vaishakh; Colmenares, Juan Carlos

TY  - JOUR
AU  - Manikandan, Soumya Koippully
AU  - Giannakoudakis, Dimitrios A.
AU  - Prekodravac, Jovana
AU  - Nair, Vaishakh
AU  - Colmenares, Juan Carlos
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10383
AB  - Biocatalysis utilizes enzymes and microbial cells as catalysts for a wide range of applications in biotechnology. Immobilization of biocatalysts on various materials has several advantages, including the capacity for reuse, quick reaction termination, easy biocatalyst recovery and operational stability. The present article focuses on the use of material supports for developing immobilized biocatalysts in applications related to energy, environment and chemical synthesis. The work provides a comprehensive overview of a broad class of materials, including organic, inorganic and composites, that have been shown to be prosperous candidates to support the immobilization of enzymes and microbial cells. It also highlights the properties of nanomaterial support such as large surface area and comfort compartment for immobilization. The availability of different types of materials as catalyst support provides an opportunity to understand and develop efficient biocatalytic systems. The choice of selecting a catalyst support will mostly depend on the interaction of the material with the enzyme or microbial cell. Finally, potential challenges, future approaches in developing immobilized biocatalytic systems for various applications and novel material supports are suggested. © 2022 Society of Chemical Industry (SCI).
T2  - Journal of Chemical Technology & Biotechnology
T1  - Role of catalyst supports in biocatalysis
DO  - 10.1002/jctb.7177
ER  - 
@article{
author = "Manikandan, Soumya Koippully and Giannakoudakis, Dimitrios A. and Prekodravac, Jovana and Nair, Vaishakh and Colmenares, Juan Carlos",
abstract = "Biocatalysis utilizes enzymes and microbial cells as catalysts for a wide range of applications in biotechnology. Immobilization of biocatalysts on various materials has several advantages, including the capacity for reuse, quick reaction termination, easy biocatalyst recovery and operational stability. The present article focuses on the use of material supports for developing immobilized biocatalysts in applications related to energy, environment and chemical synthesis. The work provides a comprehensive overview of a broad class of materials, including organic, inorganic and composites, that have been shown to be prosperous candidates to support the immobilization of enzymes and microbial cells. It also highlights the properties of nanomaterial support such as large surface area and comfort compartment for immobilization. The availability of different types of materials as catalyst support provides an opportunity to understand and develop efficient biocatalytic systems. The choice of selecting a catalyst support will mostly depend on the interaction of the material with the enzyme or microbial cell. Finally, potential challenges, future approaches in developing immobilized biocatalytic systems for various applications and novel material supports are suggested. © 2022 Society of Chemical Industry (SCI).",
journal = "Journal of Chemical Technology & Biotechnology",
title = "Role of catalyst supports in biocatalysis",
doi = "10.1002/jctb.7177"
}
Manikandan, S. K., Giannakoudakis, D. A., Prekodravac, J., Nair, V.,& Colmenares, J. C..Role of catalyst supports in biocatalysis. in Journal of Chemical Technology & Biotechnology.
https://doi.org/10.1002/jctb.7177
Manikandan SK, Giannakoudakis DA, Prekodravac J, Nair V, Colmenares JC. Role of catalyst supports in biocatalysis. in Journal of Chemical Technology & Biotechnology..
doi:10.1002/jctb.7177 .
Manikandan, Soumya Koippully, Giannakoudakis, Dimitrios A., Prekodravac, Jovana, Nair, Vaishakh, Colmenares, Juan Carlos, "Role of catalyst supports in biocatalysis" in Journal of Chemical Technology & Biotechnology,
https://doi.org/10.1002/jctb.7177 . .

Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol

Kovačević, Nikola; Dapčević, Aleksandra; Ivković, Branka; Kachrimanis, Kyriakos; Mitrić, Miodrag; Ibrić, Svetlana; Medarević, Đorđe

TY  - JOUR
AU  - Kovačević, Nikola
AU  - Dapčević, Aleksandra
AU  - Ivković, Branka
AU  - Kachrimanis, Kyriakos
AU  - Mitrić, Miodrag
AU  - Ibrić, Svetlana
AU  - Medarević, Đorđe
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9932
AB  - In this study, four low molecular weight (LMW) excipients, tryptophan (TRY), phenylalanine (PHE), lysine (LYS) and saccharin (SAC) were evaluated as co-formers to generate co-amorphous systems (CAMS) by ball milling with carvedilol (CRV). Mixtures of CRV and LMW excipient in 1:0.5, 1:1 and 1:2 drug:excipient molar ratios were ball milled and analysed by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), Fourier transform (FT-IR) infrared spectroscopy and dissolution testing. CAMS were formed by milling of a mixture of CRV with TRY in 1:2 M ratio and SAC in 1:1 M ratio, while amorphization of only CRV was achieved in other mixtures with SAC. In other samples containing TRY and PHE, milling resulted in partial amorphization, while LYS was the least suitable excipient for the amorphization of CRV. Unexpectedly, the highest supersaturation of CRV was achieved from samples containing CRV and LYS in 1:1 and 1:2 M ratios, despite the absence of a significant reduction in CRV crystallinity upon milling of these samples. Increase of hydrophobic surface area caused by milling of samples with TRY and PHE and agglomeration during dissolution testing of samples containing SAC are likely causes of poor dissolution performance of mixtures containing fully or partially amorphous CRV.
T2  - International Journal of Pharmaceutics
T1  - Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol
VL  - 608
DO  - 10.1016/j.ijpharm.2021.121033
ER  - 
@article{
author = "Kovačević, Nikola and Dapčević, Aleksandra and Ivković, Branka and Kachrimanis, Kyriakos and Mitrić, Miodrag and Ibrić, Svetlana and Medarević, Đorđe",
abstract = "In this study, four low molecular weight (LMW) excipients, tryptophan (TRY), phenylalanine (PHE), lysine (LYS) and saccharin (SAC) were evaluated as co-formers to generate co-amorphous systems (CAMS) by ball milling with carvedilol (CRV). Mixtures of CRV and LMW excipient in 1:0.5, 1:1 and 1:2 drug:excipient molar ratios were ball milled and analysed by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), Fourier transform (FT-IR) infrared spectroscopy and dissolution testing. CAMS were formed by milling of a mixture of CRV with TRY in 1:2 M ratio and SAC in 1:1 M ratio, while amorphization of only CRV was achieved in other mixtures with SAC. In other samples containing TRY and PHE, milling resulted in partial amorphization, while LYS was the least suitable excipient for the amorphization of CRV. Unexpectedly, the highest supersaturation of CRV was achieved from samples containing CRV and LYS in 1:1 and 1:2 M ratios, despite the absence of a significant reduction in CRV crystallinity upon milling of these samples. Increase of hydrophobic surface area caused by milling of samples with TRY and PHE and agglomeration during dissolution testing of samples containing SAC are likely causes of poor dissolution performance of mixtures containing fully or partially amorphous CRV.",
journal = "International Journal of Pharmaceutics",
title = "Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol",
volume = "608",
doi = "10.1016/j.ijpharm.2021.121033"
}
Kovačević, N., Dapčević, A., Ivković, B., Kachrimanis, K., Mitrić, M., Ibrić, S.,& Medarević, Đ..Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol. in International Journal of Pharmaceutics, 608.
https://doi.org/10.1016/j.ijpharm.2021.121033
Kovačević N, Dapčević A, Ivković B, Kachrimanis K, Mitrić M, Ibrić S, Medarević Đ. Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol. in International Journal of Pharmaceutics.608.
doi:10.1016/j.ijpharm.2021.121033 .
Kovačević, Nikola, Dapčević, Aleksandra, Ivković, Branka, Kachrimanis, Kyriakos, Mitrić, Miodrag, Ibrić, Svetlana, Medarević, Đorđe, "Potential application of low molecular weight excipients for amorphization and dissolution enhancement of carvedilol" in International Journal of Pharmaceutics, 608,
https://doi.org/10.1016/j.ijpharm.2021.121033 . .
4
1
4

The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer

Marinković, Aleksandar; Vuksanović, Marija M.; Karić, Nataša; Đokić, Veljko; Popović, Mina; Jančić-Heinemann, Radmila; Tomić, Nataša

TY  - JOUR
AU  - Marinković, Aleksandar
AU  - Vuksanović, Marija M.
AU  - Karić, Nataša
AU  - Đokić, Veljko
AU  - Popović, Mina
AU  - Jančić-Heinemann, Radmila
AU  - Tomić, Nataša
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9761
AB  - As a renewable resource, starch is considered to be fully biodegradable and nonpolluting to the environment but the hygroscopicity of starch is the main disadvantage for wider applicability in the production of a polymer-based material. Hydrophobically modified starch prepared using natural-based plasticizers/modifiers in a first step ([-]-diisopropyl D-tartrate [DiPT], ricinoleic acid [RA] and epoxidized soybean oil [ESO]), and maleated polypropylene (MAPP) in a second step contributed to better compatibility, and thus reinforcing of composites. Tailored processing conditions, structural/morphological properties, hydrophobicity, and water-resistance of the modified starch were established. In addition, the Charpy impact and tensile strength of composites, based on poly(ethylene-co-acrylic acid) (EAA) and modified starches, were determined. Increased tensile strength and Young modulus of the composite using starch-modified with DiPT-MAPP, that is, 3 and 83%, respectively, indicated the possible applicability of obtained materials.
T2  - Polymer Composites
T1  - The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer
DO  - 10.1002/pc.25903
ER  - 
@article{
author = "Marinković, Aleksandar and Vuksanović, Marija M. and Karić, Nataša and Đokić, Veljko and Popović, Mina and Jančić-Heinemann, Radmila and Tomić, Nataša",
abstract = "As a renewable resource, starch is considered to be fully biodegradable and nonpolluting to the environment but the hygroscopicity of starch is the main disadvantage for wider applicability in the production of a polymer-based material. Hydrophobically modified starch prepared using natural-based plasticizers/modifiers in a first step ([-]-diisopropyl D-tartrate [DiPT], ricinoleic acid [RA] and epoxidized soybean oil [ESO]), and maleated polypropylene (MAPP) in a second step contributed to better compatibility, and thus reinforcing of composites. Tailored processing conditions, structural/morphological properties, hydrophobicity, and water-resistance of the modified starch were established. In addition, the Charpy impact and tensile strength of composites, based on poly(ethylene-co-acrylic acid) (EAA) and modified starches, were determined. Increased tensile strength and Young modulus of the composite using starch-modified with DiPT-MAPP, that is, 3 and 83%, respectively, indicated the possible applicability of obtained materials.",
journal = "Polymer Composites",
title = "The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer",
doi = "10.1002/pc.25903"
}
Marinković, A., Vuksanović, M. M., Karić, N., Đokić, V., Popović, M., Jančić-Heinemann, R.,& Tomić, N..The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer. in Polymer Composites.
https://doi.org/10.1002/pc.25903
Marinković A, Vuksanović MM, Karić N, Đokić V, Popović M, Jančić-Heinemann R, Tomić N. The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer. in Polymer Composites..
doi:10.1002/pc.25903 .
Marinković, Aleksandar, Vuksanović, Marija M., Karić, Nataša, Đokić, Veljko, Popović, Mina, Jančić-Heinemann, Radmila, Tomić, Nataša, "The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer" in Polymer Composites,
https://doi.org/10.1002/pc.25903 . .
2
2
2

Denture composite reinforced with short polyethylene terephthalate fibers

Perišić, Srđan; Kareem Ali Alzaroug, Azdihar; Kalevski, Katarina; Vuksanović, Marija M.; Volkov-Husović, Tatjana; Radović, Ivana; Radojević, Vesna

TY  - JOUR
AU  - Perišić, Srđan
AU  - Kareem Ali Alzaroug, Azdihar
AU  - Kalevski, Katarina
AU  - Vuksanović, Marija M.
AU  - Volkov-Husović, Tatjana
AU  - Radović, Ivana
AU  - Radojević, Vesna
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10053
AB  - Polymer matrix composite materials have found application in dentistry because of good mechanical properties, aesthetic, easy processing, and possibilities of the repair. Acrylates are materials used to make and repair dentures. Reinforcements in the form of short glass or polymer fibers are added to improve the mechanical properties of dental polymers. In this study, the processing of composite material with a polymer matrix from commercial auto-polymerized acrylate Simgal, with reinforcement in the form of short poly(ethylene terephthalate) (PET) fibers was examined. Samples were processed in three series: pure Simgal, Simgal/PET 1 wt% and Simgal/PET 3 wt%. The influence of the reinforcement in the form of short PET fibers on the mechanical properties of composite materials was investigated. Strength and hardness were tested by impact testing and Vickers microhardness, and it was shown that there is an increase in absorbed energy and hardness. The modulus was reduced by the addition of PET fibers and by increasing the amount of fibers in the composite. The increase in the amount of PET fibers also resulted in a smaller loss of surface mass of the samples compared to the pure matrix by 63% and 93%, respectively. Cavitation test revealed better cavitation resistance of composites than the pure acrylate.
T2  - Polymer Composites
T1  - Denture composite reinforced with short polyethylene terephthalate fibers
DO  - 10.1002/pc.26397
ER  - 
@article{
author = "Perišić, Srđan and Kareem Ali Alzaroug, Azdihar and Kalevski, Katarina and Vuksanović, Marija M. and Volkov-Husović, Tatjana and Radović, Ivana and Radojević, Vesna",
abstract = "Polymer matrix composite materials have found application in dentistry because of good mechanical properties, aesthetic, easy processing, and possibilities of the repair. Acrylates are materials used to make and repair dentures. Reinforcements in the form of short glass or polymer fibers are added to improve the mechanical properties of dental polymers. In this study, the processing of composite material with a polymer matrix from commercial auto-polymerized acrylate Simgal, with reinforcement in the form of short poly(ethylene terephthalate) (PET) fibers was examined. Samples were processed in three series: pure Simgal, Simgal/PET 1 wt% and Simgal/PET 3 wt%. The influence of the reinforcement in the form of short PET fibers on the mechanical properties of composite materials was investigated. Strength and hardness were tested by impact testing and Vickers microhardness, and it was shown that there is an increase in absorbed energy and hardness. The modulus was reduced by the addition of PET fibers and by increasing the amount of fibers in the composite. The increase in the amount of PET fibers also resulted in a smaller loss of surface mass of the samples compared to the pure matrix by 63% and 93%, respectively. Cavitation test revealed better cavitation resistance of composites than the pure acrylate.",
journal = "Polymer Composites",
title = "Denture composite reinforced with short polyethylene terephthalate fibers",
doi = "10.1002/pc.26397"
}
Perišić, S., Kareem Ali Alzaroug, A., Kalevski, K., Vuksanović, M. M., Volkov-Husović, T., Radović, I.,& Radojević, V..Denture composite reinforced with short polyethylene terephthalate fibers. in Polymer Composites.
https://doi.org/10.1002/pc.26397
Perišić S, Kareem Ali Alzaroug A, Kalevski K, Vuksanović MM, Volkov-Husović T, Radović I, Radojević V. Denture composite reinforced with short polyethylene terephthalate fibers. in Polymer Composites..
doi:10.1002/pc.26397 .
Perišić, Srđan, Kareem Ali Alzaroug, Azdihar, Kalevski, Katarina, Vuksanović, Marija M., Volkov-Husović, Tatjana, Radović, Ivana, Radojević, Vesna, "Denture composite reinforced with short polyethylene terephthalate fibers" in Polymer Composites,
https://doi.org/10.1002/pc.26397 . .
1

Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease

Aranđelović, Jovana; Santrač, Anja; Batinić, Bojan; Todorović, Lidija; Stevanović, Vladimir; Tiruveedhula, Veera Venkata Naga Phani Babu; Sharmin, Dishary; Rashid, Farjana; Stanojević, Boban; Cook, James M.; Savić, Miroslav M.

TY  - JOUR
AU  - Aranđelović, Jovana
AU  - Santrač, Anja
AU  - Batinić, Bojan
AU  - Todorović, Lidija
AU  - Stevanović, Vladimir
AU  - Tiruveedhula, Veera Venkata Naga Phani Babu
AU  - Sharmin, Dishary
AU  - Rashid, Farjana
AU  - Stanojević, Boban
AU  - Cook, James M.
AU  - Savić, Miroslav M.
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10360
AB  - Aims GABAergic modulation involved in cognitive processing appears to be substantially changed in Alzheimer's disease (AD). In a widely used 5xFAD model of AD, we aimed to assess if negative and positive allosteric modulators of α5 GABAA receptors (NAM and PAM, respectively) would affect social interaction, social, object and spatial memory, and neuroinflammation. Methods After 10-day treatment with PAM, NAM, or solvent, 6-month-old transgenic and non-transgenic 5xFAD mice underwent testing in a behavioral battery. Gene expressions of IL-1β, IL-6, TNF-α, GFAP, and IBA-1 were determined in hippocampus and prefrontal cortex by qPCR. Results PAM treatment impaired spatial learning in transgenic females compared to solvent-treated transgenic females, and social recognition in transgenic and non-transgenic males. NAM treatment declined social interaction in transgenic and non-transgenic males, while had beneficial effect on cognitive flexibility in non-transgenic males compared to solvent-treated non-transgenic males. Transgenic animals have not fully displayed cognitive symptoms, but neuroinflammation was confirmed. NAM reduced proinflammatory gene expressions in transgenic females and astrogliosis in transgenic males compared to pathological controls. Conclusion PAM and NAM failed to exert favorable behavioral effects in transgenic animals. Suppression of neuroinflammation obtained with NAM calls for more studies with GABAergic ligands in amyloid beta- and/or tau-dependent models with prominent neuroinflammation.
T2  - CNS Neuroscience & Therapeutics
T2  - CNS Neuroscience & Therapeutics
T1  - Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease
DO  - 10.1111/cns.13914
ER  - 
@article{
author = "Aranđelović, Jovana and Santrač, Anja and Batinić, Bojan and Todorović, Lidija and Stevanović, Vladimir and Tiruveedhula, Veera Venkata Naga Phani Babu and Sharmin, Dishary and Rashid, Farjana and Stanojević, Boban and Cook, James M. and Savić, Miroslav M.",
abstract = "Aims GABAergic modulation involved in cognitive processing appears to be substantially changed in Alzheimer's disease (AD). In a widely used 5xFAD model of AD, we aimed to assess if negative and positive allosteric modulators of α5 GABAA receptors (NAM and PAM, respectively) would affect social interaction, social, object and spatial memory, and neuroinflammation. Methods After 10-day treatment with PAM, NAM, or solvent, 6-month-old transgenic and non-transgenic 5xFAD mice underwent testing in a behavioral battery. Gene expressions of IL-1β, IL-6, TNF-α, GFAP, and IBA-1 were determined in hippocampus and prefrontal cortex by qPCR. Results PAM treatment impaired spatial learning in transgenic females compared to solvent-treated transgenic females, and social recognition in transgenic and non-transgenic males. NAM treatment declined social interaction in transgenic and non-transgenic males, while had beneficial effect on cognitive flexibility in non-transgenic males compared to solvent-treated non-transgenic males. Transgenic animals have not fully displayed cognitive symptoms, but neuroinflammation was confirmed. NAM reduced proinflammatory gene expressions in transgenic females and astrogliosis in transgenic males compared to pathological controls. Conclusion PAM and NAM failed to exert favorable behavioral effects in transgenic animals. Suppression of neuroinflammation obtained with NAM calls for more studies with GABAergic ligands in amyloid beta- and/or tau-dependent models with prominent neuroinflammation.",
journal = "CNS Neuroscience & Therapeutics, CNS Neuroscience & Therapeutics",
title = "Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease",
doi = "10.1111/cns.13914"
}
Aranđelović, J., Santrač, A., Batinić, B., Todorović, L., Stevanović, V., Tiruveedhula, V. V. N. P. B., Sharmin, D., Rashid, F., Stanojević, B., Cook, J. M.,& Savić, M. M..Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease. in CNS Neuroscience & Therapeutics.
https://doi.org/10.1111/cns.13914
Aranđelović J, Santrač A, Batinić B, Todorović L, Stevanović V, Tiruveedhula VVNPB, Sharmin D, Rashid F, Stanojević B, Cook JM, Savić MM. Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease. in CNS Neuroscience & Therapeutics..
doi:10.1111/cns.13914 .
Aranđelović, Jovana, Santrač, Anja, Batinić, Bojan, Todorović, Lidija, Stevanović, Vladimir, Tiruveedhula, Veera Venkata Naga Phani Babu, Sharmin, Dishary, Rashid, Farjana, Stanojević, Boban, Cook, James M., Savić, Miroslav M., "Effects of α5 GABAA receptor modulation on social interaction, memory, and neuroinflammation in a mouse model of Alzheimer's disease" in CNS Neuroscience & Therapeutics,
https://doi.org/10.1111/cns.13914 . .
10

Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides

Batalovic, Katarina; Radaković, Jana; Paskaš Mamula, Bojana; Kuzmanović, Bojana; Medić-Ilić, Mirjana

TY  - JOUR
AU  - Batalovic, Katarina
AU  - Radaković, Jana
AU  - Paskaš Mamula, Bojana
AU  - Kuzmanović, Bojana
AU  - Medić-Ilić, Mirjana
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10348
AB  - Theoretical tools or structure-property relations that enable the prediction of metal hydrides are of enormous interest in developing new hydrogen storage materials. Density functional theory (DFT) is one such approach that provides accurate hydride formation energies, which, if complemented with vibrational zero-point energy and other contributions, provides accurate hydride formation enthalpies. However, this approach is time consuming and, therefore, often avoided, hindering the modeling of experimental behavior. The recent implementation of graph neural networks (GNN) in materials science enables fast prediction of crystal formation energy with a DFT accuracy. Starting from the MatErials Graph Network (MEGNet), transfer learning is applied to develop a model for predicting hydride formation enthalpy based on the crystal structure of the starting intermetallic. Excellent accuracy is achieved for Mg-containing alloys, allowing the screening of the Mg-Ni-M ternary intermetallics. In addition, data containing matching experimental properties and crystal structure of metal hydrides are provided, enabling future development.
T2  - Advanced Theory and Simulations
T1  - Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides
SP  - 2200293
DO  - 10.1002/adts.202200293
ER  - 
@article{
author = "Batalovic, Katarina and Radaković, Jana and Paskaš Mamula, Bojana and Kuzmanović, Bojana and Medić-Ilić, Mirjana",
abstract = "Theoretical tools or structure-property relations that enable the prediction of metal hydrides are of enormous interest in developing new hydrogen storage materials. Density functional theory (DFT) is one such approach that provides accurate hydride formation energies, which, if complemented with vibrational zero-point energy and other contributions, provides accurate hydride formation enthalpies. However, this approach is time consuming and, therefore, often avoided, hindering the modeling of experimental behavior. The recent implementation of graph neural networks (GNN) in materials science enables fast prediction of crystal formation energy with a DFT accuracy. Starting from the MatErials Graph Network (MEGNet), transfer learning is applied to develop a model for predicting hydride formation enthalpy based on the crystal structure of the starting intermetallic. Excellent accuracy is achieved for Mg-containing alloys, allowing the screening of the Mg-Ni-M ternary intermetallics. In addition, data containing matching experimental properties and crystal structure of metal hydrides are provided, enabling future development.",
journal = "Advanced Theory and Simulations",
title = "Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides",
pages = "2200293",
doi = "10.1002/adts.202200293"
}
Batalovic, K., Radaković, J., Paskaš Mamula, B., Kuzmanović, B.,& Medić-Ilić, M..Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides. in Advanced Theory and Simulations, 2200293.
https://doi.org/10.1002/adts.202200293
Batalovic K, Radaković J, Paskaš Mamula B, Kuzmanović B, Medić-Ilić M. Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides. in Advanced Theory and Simulations.:2200293.
doi:10.1002/adts.202200293 .
Batalovic, Katarina, Radaković, Jana, Paskaš Mamula, Bojana, Kuzmanović, Bojana, Medić-Ilić, Mirjana, "Predicting the Heat of Hydride Formation by Graph Neural Network - Exploring the Structure-Property Relation for Metal Hydrides" in Advanced Theory and Simulations:2200293,
https://doi.org/10.1002/adts.202200293 . .
1

Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer

Stojković, Goran; Jovanović, Ivan; Dimitrijević, Milovan; Jovanović, Jasmina; Tomanović, Nada; Stanković, Aleksandra; Arsović, Nenad; Boričić, Ivan; Zeljić, Katarina

TY  - JOUR
AU  - Stojković, Goran
AU  - Jovanović, Ivan
AU  - Dimitrijević, Milovan
AU  - Jovanović, Jasmina
AU  - Tomanović, Nada
AU  - Stanković, Aleksandra
AU  - Arsović, Nenad
AU  - Boričić, Ivan
AU  - Zeljić, Katarina
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10217
AB  - Objectives This study aimed to experimentally validate dysregulated expression of miRNA candidates selected through updated meta-analysis of most commonly deregulated miRNAs in oral cancer and to explore their diagnostic and prognostic potential. Materials and methods Five miRNAs (miR-31-3p, miR-135b-5p, miR-18a-5p, miR-30a-5p and miR-139-5p) from updated meta-signature were selected for validation by qRT-PCR method in 35 oral cancer clinical specimens and adjacent non-cancerous tissue. Results Updated meta-analysis has identified 13 most commonly deregulated miRNAs in oral cancer. Seven miRNAs were consistently up-regulated (miR-21-5p, miR-31-3p, miR-135b-5p, miR-31-5p, miR-424-5p, miR-18a-5p and miR-21-3p), while five were down-regulated (miR-139-5p, miR-30a-3p, miR-375-3p, miR-376c-3p and miR-30a-5p). Increased expression of miR-31-3p and miR-135b-5p, and decreased expression of miR-139-5p and miR-30a-5p were confirmed in oral cancer compared to adjacent non-cancerous tissue. A three miRNAs combination (miR-31-3p, miR-139-5p and miR-30a-5p) gave the most promising diagnostic potential for discriminating oral cancer from non-cancerous tissue (AUC: 0.780 [95% CI: 0.673–0.886], p < 0.0005, sensitivity 94.3%, specificity 51.4%). High expression of miR-135b-5p, miR-18a-5p and miR-30a-5p was associated with poor survival (p = 0.003, p = 0.048, p = 0.016 respectively). Conclusion miR-31-3p, miR-139-5p and miR-30a-5p panel was confirmed as a potential diagnostic biomarker when distinguishing oral cancer from non-cancerous tissue. miR-135b-5p, miR-18a-5p and miR-30a-5p might serve as potential biomarkers of poor survival of oral cancer patients.
T2  - Oral Diseases
T1  - Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer
DO  - 10.1111/odi.14185
ER  - 
@article{
author = "Stojković, Goran and Jovanović, Ivan and Dimitrijević, Milovan and Jovanović, Jasmina and Tomanović, Nada and Stanković, Aleksandra and Arsović, Nenad and Boričić, Ivan and Zeljić, Katarina",
abstract = "Objectives This study aimed to experimentally validate dysregulated expression of miRNA candidates selected through updated meta-analysis of most commonly deregulated miRNAs in oral cancer and to explore their diagnostic and prognostic potential. Materials and methods Five miRNAs (miR-31-3p, miR-135b-5p, miR-18a-5p, miR-30a-5p and miR-139-5p) from updated meta-signature were selected for validation by qRT-PCR method in 35 oral cancer clinical specimens and adjacent non-cancerous tissue. Results Updated meta-analysis has identified 13 most commonly deregulated miRNAs in oral cancer. Seven miRNAs were consistently up-regulated (miR-21-5p, miR-31-3p, miR-135b-5p, miR-31-5p, miR-424-5p, miR-18a-5p and miR-21-3p), while five were down-regulated (miR-139-5p, miR-30a-3p, miR-375-3p, miR-376c-3p and miR-30a-5p). Increased expression of miR-31-3p and miR-135b-5p, and decreased expression of miR-139-5p and miR-30a-5p were confirmed in oral cancer compared to adjacent non-cancerous tissue. A three miRNAs combination (miR-31-3p, miR-139-5p and miR-30a-5p) gave the most promising diagnostic potential for discriminating oral cancer from non-cancerous tissue (AUC: 0.780 [95% CI: 0.673–0.886], p < 0.0005, sensitivity 94.3%, specificity 51.4%). High expression of miR-135b-5p, miR-18a-5p and miR-30a-5p was associated with poor survival (p = 0.003, p = 0.048, p = 0.016 respectively). Conclusion miR-31-3p, miR-139-5p and miR-30a-5p panel was confirmed as a potential diagnostic biomarker when distinguishing oral cancer from non-cancerous tissue. miR-135b-5p, miR-18a-5p and miR-30a-5p might serve as potential biomarkers of poor survival of oral cancer patients.",
journal = "Oral Diseases",
title = "Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer",
doi = "10.1111/odi.14185"
}
Stojković, G., Jovanović, I., Dimitrijević, M., Jovanović, J., Tomanović, N., Stanković, A., Arsović, N., Boričić, I.,& Zeljić, K..Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer. in Oral Diseases.
https://doi.org/10.1111/odi.14185
Stojković G, Jovanović I, Dimitrijević M, Jovanović J, Tomanović N, Stanković A, Arsović N, Boričić I, Zeljić K. Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer. in Oral Diseases..
doi:10.1111/odi.14185 .
Stojković, Goran, Jovanović, Ivan, Dimitrijević, Milovan, Jovanović, Jasmina, Tomanović, Nada, Stanković, Aleksandra, Arsović, Nenad, Boričić, Ivan, Zeljić, Katarina, "Meta-signature guided investigation of miRNA candidates as potential biomarkers of oral cancer" in Oral Diseases,
https://doi.org/10.1111/odi.14185 . .

Recent advances on smart glycoconjugate vaccines in infections and cancer

Anderluh, Marko; Berti, Francesco; Bzducha-Wróbel, Anna; Chiodo, Fabrizio; Colombo, Cinzia; Compostella, Federica; Durlik, Katarzyna; Ferhati, Xhenti; Holmdahl, Rikard; Jovanović, Dragana J.; Kaca, Wieslaw; Lay, Luigi; Marinovic-Cincovic, Milena; Marradi, Marco; Ozil, Musa; Polito, Laura; Reina, Josè Juan; Reis, Celso A.; Sackstein, Robert; Silipo, Alba; Švajger, Urban; Vaněk, Ondřej; Yamamoto, Fumiichiro; Richichi, Barbara; van Vliet, Sandra J.

TY  - JOUR
AU  - Anderluh, Marko
AU  - Berti, Francesco
AU  - Bzducha-Wróbel, Anna
AU  - Chiodo, Fabrizio
AU  - Colombo, Cinzia
AU  - Compostella, Federica
AU  - Durlik, Katarzyna
AU  - Ferhati, Xhenti
AU  - Holmdahl, Rikard
AU  - Jovanović, Dragana J.
AU  - Kaca, Wieslaw
AU  - Lay, Luigi
AU  - Marinovic-Cincovic, Milena
AU  - Marradi, Marco
AU  - Ozil, Musa
AU  - Polito, Laura
AU  - Reina, Josè Juan
AU  - Reis, Celso A.
AU  - Sackstein, Robert
AU  - Silipo, Alba
AU  - Švajger, Urban
AU  - Vaněk, Ondřej
AU  - Yamamoto, Fumiichiro
AU  - Richichi, Barbara
AU  - van Vliet, Sandra J.
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9834
AB  - Vaccination is one of the greatest achievements in biomedical research preventing death and morbidity in many infectious diseases through the induction of pathogen-specific humoral and cellular immune responses. Currently, no effective vaccines are available for pathogens with a highly variable antigenic load, such as the human immunodeficiency virus or to induce cellular T-cell immunity in the fight against cancer. The recent SARS-CoV-2 outbreak has reinforced the relevance of designing smart therapeutic vaccine modalities to ensure public health. Indeed, academic and private companies have ongoing joint efforts to develop novel vaccine prototypes for this virus. Many pathogens are covered by a dense glycan-coat, which form an attractive target for vaccine development. Moreover, many tumor types are characterized by altered glycosylation profiles that are known as “tumor-associated carbohydrate antigens”. Unfortunately, glycans do not provoke a vigorous immune response and generally serve as T-cell-independent antigens, not eliciting protective immunoglobulin G responses nor inducing immunological memory. A close and continuous crosstalk between glycochemists and glycoimmunologists is essential for the successful development of efficient immune modulators. It is clear that this is a key point for the discovery of novel approaches, which could significantly improve our understanding of the immune system. In this review, we discuss the latest advancements in development of vaccines against glycan epitopes to gain selective immune responses and to provide an overview on the role of different immunogenic constructs in improving glycovaccine efficacy.
T2  - The FEBS Journal
T1  - Recent advances on smart glycoconjugate vaccines in infections and cancer
DO  - 10.1111/febs.15909
ER  - 
@article{
author = "Anderluh, Marko and Berti, Francesco and Bzducha-Wróbel, Anna and Chiodo, Fabrizio and Colombo, Cinzia and Compostella, Federica and Durlik, Katarzyna and Ferhati, Xhenti and Holmdahl, Rikard and Jovanović, Dragana J. and Kaca, Wieslaw and Lay, Luigi and Marinovic-Cincovic, Milena and Marradi, Marco and Ozil, Musa and Polito, Laura and Reina, Josè Juan and Reis, Celso A. and Sackstein, Robert and Silipo, Alba and Švajger, Urban and Vaněk, Ondřej and Yamamoto, Fumiichiro and Richichi, Barbara and van Vliet, Sandra J.",
abstract = "Vaccination is one of the greatest achievements in biomedical research preventing death and morbidity in many infectious diseases through the induction of pathogen-specific humoral and cellular immune responses. Currently, no effective vaccines are available for pathogens with a highly variable antigenic load, such as the human immunodeficiency virus or to induce cellular T-cell immunity in the fight against cancer. The recent SARS-CoV-2 outbreak has reinforced the relevance of designing smart therapeutic vaccine modalities to ensure public health. Indeed, academic and private companies have ongoing joint efforts to develop novel vaccine prototypes for this virus. Many pathogens are covered by a dense glycan-coat, which form an attractive target for vaccine development. Moreover, many tumor types are characterized by altered glycosylation profiles that are known as “tumor-associated carbohydrate antigens”. Unfortunately, glycans do not provoke a vigorous immune response and generally serve as T-cell-independent antigens, not eliciting protective immunoglobulin G responses nor inducing immunological memory. A close and continuous crosstalk between glycochemists and glycoimmunologists is essential for the successful development of efficient immune modulators. It is clear that this is a key point for the discovery of novel approaches, which could significantly improve our understanding of the immune system. In this review, we discuss the latest advancements in development of vaccines against glycan epitopes to gain selective immune responses and to provide an overview on the role of different immunogenic constructs in improving glycovaccine efficacy.",
journal = "The FEBS Journal",
title = "Recent advances on smart glycoconjugate vaccines in infections and cancer",
doi = "10.1111/febs.15909"
}
Anderluh, M., Berti, F., Bzducha-Wróbel, A., Chiodo, F., Colombo, C., Compostella, F., Durlik, K., Ferhati, X., Holmdahl, R., Jovanović, D. J., Kaca, W., Lay, L., Marinovic-Cincovic, M., Marradi, M., Ozil, M., Polito, L., Reina, J. J., Reis, C. A., Sackstein, R., Silipo, A., Švajger, U., Vaněk, O., Yamamoto, F., Richichi, B.,& van Vliet, S. J..Recent advances on smart glycoconjugate vaccines in infections and cancer. in The FEBS Journal.
https://doi.org/10.1111/febs.15909
Anderluh M, Berti F, Bzducha-Wróbel A, Chiodo F, Colombo C, Compostella F, Durlik K, Ferhati X, Holmdahl R, Jovanović DJ, Kaca W, Lay L, Marinovic-Cincovic M, Marradi M, Ozil M, Polito L, Reina JJ, Reis CA, Sackstein R, Silipo A, Švajger U, Vaněk O, Yamamoto F, Richichi B, van Vliet SJ. Recent advances on smart glycoconjugate vaccines in infections and cancer. in The FEBS Journal..
doi:10.1111/febs.15909 .
Anderluh, Marko, Berti, Francesco, Bzducha-Wróbel, Anna, Chiodo, Fabrizio, Colombo, Cinzia, Compostella, Federica, Durlik, Katarzyna, Ferhati, Xhenti, Holmdahl, Rikard, Jovanović, Dragana J., Kaca, Wieslaw, Lay, Luigi, Marinovic-Cincovic, Milena, Marradi, Marco, Ozil, Musa, Polito, Laura, Reina, Josè Juan, Reis, Celso A., Sackstein, Robert, Silipo, Alba, Švajger, Urban, Vaněk, Ondřej, Yamamoto, Fumiichiro, Richichi, Barbara, van Vliet, Sandra J., "Recent advances on smart glycoconjugate vaccines in infections and cancer" in The FEBS Journal,
https://doi.org/10.1111/febs.15909 . .
15
15
4
13

Non-coding RNA and cholesteatoma

Jovanović, Ivan G.; Živković, Maja; Ješić, Snežana; Stanković, Aleksandra

TY  - JOUR
AU  - Jovanović, Ivan G.
AU  - Živković, Maja
AU  - Ješić, Snežana
AU  - Stanković, Aleksandra
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10115
AB  - Objective Cholesteatoma is a challenging chronic pathology of the middle ear for which pharmacologic therapies have not been developed yet. Cholesteatoma occurrence depends on the interplay between genetic and environmental factors while master regulators orchestrating disease progression are still unknown. Therefore, in this review, we will discuss the diagnostic and therapeutic potential of non-coding RNAs (ncRNA) as a new class of regulatory molecules. Methods We have comprehensively reviewed all articles investigating ncRNAs, specifically micro RNAs (miRNAs) and long ncRNAs (lncRNA/circRNA) in cholesteatoma tissue. Results Candidate miRNA approaches indicated that miR-21 and let-7a are the major miRNAs involved in cholesteatoma growth, migration, proliferation, bone destruction, and apoptosis. Regulatory potential for the same biological processes was also observed for miR-203a. The NF-kB/miR-802/PTEN regulatory network was in relation to observed miR-21 activity in cholesteatoma as well. High throughput approaches revealed additional ncRNAs implicated in cholesteatoma pathology. Competitive endogenous RNA (ceRNA) analysis highlighted lncRNA/circRNA that could be “endogenous sponge” for miR-21 and let-7a based on the hypothesis that RNA transcripts can communicate with and regulate each other by using shared miRNA response elements. Conclusion In this review, we summarize the discoveries and role of ncRNA in major pathways in cholesteatoma and highlight the potential of miRNA-based therapeutics in the treatment of cholesteatoma. Level of Evidence: NA.
T2  - Laryngoscope Investigative Otolaryngology
T2  - Laryngoscope Investigative Otolaryngology
T1  - Non-coding RNA and cholesteatoma
DO  - 10.1002/lio2.728
ER  - 
@article{
author = "Jovanović, Ivan G. and Živković, Maja and Ješić, Snežana and Stanković, Aleksandra",
abstract = "Objective Cholesteatoma is a challenging chronic pathology of the middle ear for which pharmacologic therapies have not been developed yet. Cholesteatoma occurrence depends on the interplay between genetic and environmental factors while master regulators orchestrating disease progression are still unknown. Therefore, in this review, we will discuss the diagnostic and therapeutic potential of non-coding RNAs (ncRNA) as a new class of regulatory molecules. Methods We have comprehensively reviewed all articles investigating ncRNAs, specifically micro RNAs (miRNAs) and long ncRNAs (lncRNA/circRNA) in cholesteatoma tissue. Results Candidate miRNA approaches indicated that miR-21 and let-7a are the major miRNAs involved in cholesteatoma growth, migration, proliferation, bone destruction, and apoptosis. Regulatory potential for the same biological processes was also observed for miR-203a. The NF-kB/miR-802/PTEN regulatory network was in relation to observed miR-21 activity in cholesteatoma as well. High throughput approaches revealed additional ncRNAs implicated in cholesteatoma pathology. Competitive endogenous RNA (ceRNA) analysis highlighted lncRNA/circRNA that could be “endogenous sponge” for miR-21 and let-7a based on the hypothesis that RNA transcripts can communicate with and regulate each other by using shared miRNA response elements. Conclusion In this review, we summarize the discoveries and role of ncRNA in major pathways in cholesteatoma and highlight the potential of miRNA-based therapeutics in the treatment of cholesteatoma. Level of Evidence: NA.",
journal = "Laryngoscope Investigative Otolaryngology, Laryngoscope Investigative Otolaryngology",
title = "Non-coding RNA and cholesteatoma",
doi = "10.1002/lio2.728"
}
Jovanović, I. G., Živković, M., Ješić, S.,& Stanković, A..Non-coding RNA and cholesteatoma. in Laryngoscope Investigative Otolaryngology.
https://doi.org/10.1002/lio2.728
Jovanović IG, Živković M, Ješić S, Stanković A. Non-coding RNA and cholesteatoma. in Laryngoscope Investigative Otolaryngology..
doi:10.1002/lio2.728 .
Jovanović, Ivan G., Živković, Maja, Ješić, Snežana, Stanković, Aleksandra, "Non-coding RNA and cholesteatoma" in Laryngoscope Investigative Otolaryngology,
https://doi.org/10.1002/lio2.728 . .
1

Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study

Kepić, Dejan P.; Stefanović, Anđela M.; Budimir, Milica D.; Pavlović, Vladimir B.; Bonasera, Aurelio; Scopelliti, Michelangelo; Todorović-Marković, Biljana M.

(2023)

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Stefanović, Anđela M.
AU  - Budimir, Milica D.
AU  - Pavlović, Vladimir B.
AU  - Bonasera, Aurelio
AU  - Scopelliti, Michelangelo
AU  - Todorović-Marković, Biljana M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10426
AB  - Gamma irradiation provides an alternative pathway to conventional gold nanoparticle synthesis because it is simple, fast, and economical. Here, we employed gamma irradiation at low doses (1–20 kGy) to obtain gold nanoparticles (Au NPs) anchored onto graphene oxide (GO) sheets. GO was selected as a suitable platform for the nucleation and growth of Au NPs because of its large surface area and good dispersibility in water due to the presence of polar oxygen-containing functional groups in its structure. Gamma irradiation at all the applied doses led to the reduction of chloroauric acid and the formation of evenly distributed Au NPs at the GO surface, simultaneously causing the reduction of GO and partial restoration of the graphene structure. As-prepared Au NPs have predominately spheric shapes and the smallest nanoparticles were reported for the dose of 1 kGy. The increase in the irradiation dose caused either the growth of larger particles (5 and 10 kGy) or the broad distribution of particles’ sizes (20 kGy). All samples showed a temperature increase upon exposure to 800 nm laser and photothermal efficiency was the highest for the sample prepared at 20 kGy. © 2022 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study
VL  - 202
DO  - 10.1016/j.radphyschem.2022.110545
ER  - 
@article{
author = "Kepić, Dejan P. and Stefanović, Anđela M. and Budimir, Milica D. and Pavlović, Vladimir B. and Bonasera, Aurelio and Scopelliti, Michelangelo and Todorović-Marković, Biljana M.",
year = "2023",
abstract = "Gamma irradiation provides an alternative pathway to conventional gold nanoparticle synthesis because it is simple, fast, and economical. Here, we employed gamma irradiation at low doses (1–20 kGy) to obtain gold nanoparticles (Au NPs) anchored onto graphene oxide (GO) sheets. GO was selected as a suitable platform for the nucleation and growth of Au NPs because of its large surface area and good dispersibility in water due to the presence of polar oxygen-containing functional groups in its structure. Gamma irradiation at all the applied doses led to the reduction of chloroauric acid and the formation of evenly distributed Au NPs at the GO surface, simultaneously causing the reduction of GO and partial restoration of the graphene structure. As-prepared Au NPs have predominately spheric shapes and the smallest nanoparticles were reported for the dose of 1 kGy. The increase in the irradiation dose caused either the growth of larger particles (5 and 10 kGy) or the broad distribution of particles’ sizes (20 kGy). All samples showed a temperature increase upon exposure to 800 nm laser and photothermal efficiency was the highest for the sample prepared at 20 kGy. © 2022 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study",
volume = "202",
doi = "10.1016/j.radphyschem.2022.110545"
}
Kepić, D. P., Stefanović, A. M., Budimir, M. D., Pavlović, V. B., Bonasera, A., Scopelliti, M.,& Todorović-Marković, B. M.. (2023). Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study. in Radiation Physics and Chemistry, 202.
https://doi.org/10.1016/j.radphyschem.2022.110545
Kepić DP, Stefanović AM, Budimir MD, Pavlović VB, Bonasera A, Scopelliti M, Todorović-Marković BM. Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study. in Radiation Physics and Chemistry. 2023;202.
doi:10.1016/j.radphyschem.2022.110545 .
Kepić, Dejan P., Stefanović, Anđela M., Budimir, Milica D., Pavlović, Vladimir B., Bonasera, Aurelio, Scopelliti, Michelangelo, Todorović-Marković, Biljana M., "Gamma rays induced synthesis of graphene oxide/gold nanoparticle composites: structural and photothermal study" in Radiation Physics and Chemistry, 202 (2023),
https://doi.org/10.1016/j.radphyschem.2022.110545 . .

High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications

Milikić, Jadranka; Tapia, Andres; Stamenović, Una; Vodnik, Vesna; Otoničar, Mojca; Škapin, Srečo; Santos, Diogo M. F.; Šljukić, Biljana

(2022)

TY  - JOUR
AU  - Milikić, Jadranka
AU  - Tapia, Andres
AU  - Stamenović, Una
AU  - Vodnik, Vesna
AU  - Otoničar, Mojca
AU  - Škapin, Srečo
AU  - Santos, Diogo M. F.
AU  - Šljukić, Biljana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10436
AB  - Gold polypyrrole (AuPPy) and copper polypyrrole (CuPPy) nanocomposites were prepared by a simple one-step in situ oxidative polymerization of pyrrole monomer by Au3+ and Cu2+ ions. Owing to their characteristic physicochemical properties confirmed by optical and structural characterization methods, the behavior of these materials as electrocatalysts for borohydride oxidation reaction (BOR) was considered. BOR apparent activation energy was found to be 16 and 22 kJ mol−1 for AuPPy and CuPPy electrocatalyst, respectively. The stability of the two electrocatalysts was assessed by chronoamperometry. Moreover, fuel cell tests were carried out with AuPPy and CuPPy as anode electrocatalyst of a direct borohydride-peroxide fuel cell (DBPFC). Open circuit voltage (OCV) of 1.30 V was obtained with both AuPPy and CuPPy, with the OCV increasing to 1.45 V upon adding a small amount of carbon (AuPPy-C). The peak power density of a DBPFC with BOR at AuPPy-C anode and hydrogen peroxide reduction reaction at Pt cathode was found to be ca. 162 mW cm−2 at 65 °C.
T2  - International Journal of Hydrogen Energy
T1  - High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications
DO  - 10.1016/j.ijhydene.2022.08.229
ER  - 
@article{
author = "Milikić, Jadranka and Tapia, Andres and Stamenović, Una and Vodnik, Vesna and Otoničar, Mojca and Škapin, Srečo and Santos, Diogo M. F. and Šljukić, Biljana",
year = "2022",
abstract = "Gold polypyrrole (AuPPy) and copper polypyrrole (CuPPy) nanocomposites were prepared by a simple one-step in situ oxidative polymerization of pyrrole monomer by Au3+ and Cu2+ ions. Owing to their characteristic physicochemical properties confirmed by optical and structural characterization methods, the behavior of these materials as electrocatalysts for borohydride oxidation reaction (BOR) was considered. BOR apparent activation energy was found to be 16 and 22 kJ mol−1 for AuPPy and CuPPy electrocatalyst, respectively. The stability of the two electrocatalysts was assessed by chronoamperometry. Moreover, fuel cell tests were carried out with AuPPy and CuPPy as anode electrocatalyst of a direct borohydride-peroxide fuel cell (DBPFC). Open circuit voltage (OCV) of 1.30 V was obtained with both AuPPy and CuPPy, with the OCV increasing to 1.45 V upon adding a small amount of carbon (AuPPy-C). The peak power density of a DBPFC with BOR at AuPPy-C anode and hydrogen peroxide reduction reaction at Pt cathode was found to be ca. 162 mW cm−2 at 65 °C.",
journal = "International Journal of Hydrogen Energy",
title = "High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications",
doi = "10.1016/j.ijhydene.2022.08.229"
}
Milikić, J., Tapia, A., Stamenović, U., Vodnik, V., Otoničar, M., Škapin, S., Santos, D. M. F.,& Šljukić, B.. (2022). High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications. in International Journal of Hydrogen Energy.
https://doi.org/10.1016/j.ijhydene.2022.08.229
Milikić J, Tapia A, Stamenović U, Vodnik V, Otoničar M, Škapin S, Santos DMF, Šljukić B. High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications. in International Journal of Hydrogen Energy. 2022;.
doi:10.1016/j.ijhydene.2022.08.229 .
Milikić, Jadranka, Tapia, Andres, Stamenović, Una, Vodnik, Vesna, Otoničar, Mojca, Škapin, Srečo, Santos, Diogo M. F., Šljukić, Biljana, "High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications" in International Journal of Hydrogen Energy (2022),
https://doi.org/10.1016/j.ijhydene.2022.08.229 . .

Aranđelović, Nemanja M.; Nikezić, Dušan P.; Ramadani, Uzahir R.; Lazović, Ivan M.; Mirkov, Nikola S.; Osmokrović, Predrag V.

(2022)

TY  - JOUR
AU  - Aranđelović, Nemanja M.
AU  - Nikezić, Dušan P.
AU  - Ramadani, Uzahir R.
AU  - Lazović, Ivan M.
AU  - Mirkov, Nikola S.
AU  - Osmokrović, Predrag V.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10435
AB  - The research presents an experiment with a model of an electronic generator for energy injection into the plasma of a fusion reactor. By recording a non-ionizing field in the vicinity of a fusion reactor, it was determined that this field has an extremely high growth rate. At the site of the maximum intensity of the field of non-ionizing radiation, commercial surge arresters with a flexible model of surge arresters were used for experimentation. It has been found that the commercial surge arresters have an efficiency of about 20%. For the efficiency of the flexible model, it was found to be slightly less than 40% (and to be achieved by the application of alpha particle radiation). Since neither of these efficiencies guarantee reliable operation of the gas-filled surge arrester, it was concluded that essential electronics in the vicinity of the fusion generator must be protected. However, since this protection can only be implemented in a fusion reactor, the fact remains that the environment of such a reactor is extremely contaminated with non-ionizing radiation. Commercial surge voltages are isolated for testing since the protection of electronic circuits from fast overvoltages is a critical point for the functioning of modern electronics.
T2  - Nuclear Technology and Radiation Protection
VL  - 37
IS  - 1
SP  - 51
EP  - 56
DO  - 10.2298/NTRP2201051A
ER  - 
@article{
author = "Aranđelović, Nemanja M. and Nikezić, Dušan P. and Ramadani, Uzahir R. and Lazović, Ivan M. and Mirkov, Nikola S. and Osmokrović, Predrag V.",
year = "2022",
abstract = "The research presents an experiment with a model of an electronic generator for energy injection into the plasma of a fusion reactor. By recording a non-ionizing field in the vicinity of a fusion reactor, it was determined that this field has an extremely high growth rate. At the site of the maximum intensity of the field of non-ionizing radiation, commercial surge arresters with a flexible model of surge arresters were used for experimentation. It has been found that the commercial surge arresters have an efficiency of about 20%. For the efficiency of the flexible model, it was found to be slightly less than 40% (and to be achieved by the application of alpha particle radiation). Since neither of these efficiencies guarantee reliable operation of the gas-filled surge arrester, it was concluded that essential electronics in the vicinity of the fusion generator must be protected. However, since this protection can only be implemented in a fusion reactor, the fact remains that the environment of such a reactor is extremely contaminated with non-ionizing radiation. Commercial surge voltages are isolated for testing since the protection of electronic circuits from fast overvoltages is a critical point for the functioning of modern electronics.",
journal = "Nuclear Technology and Radiation Protection",
volume = "37",
number = "1",
pages = "51-56",
doi = "10.2298/NTRP2201051A"
}
Aranđelović, N. M., Nikezić, D. P., Ramadani, U. R., Lazović, I. M., Mirkov, N. S.,& Osmokrović, P. V.. (2022). in Nuclear Technology and Radiation Protection, 37(1), 51-56.
https://doi.org/10.2298/NTRP2201051A
Aranđelović NM, Nikezić DP, Ramadani UR, Lazović IM, Mirkov NS, Osmokrović PV. in Nuclear Technology and Radiation Protection. 2022;37(1):51-56.
doi:10.2298/NTRP2201051A .
Aranđelović, Nemanja M., Nikezić, Dušan P., Ramadani, Uzahir R., Lazović, Ivan M., Mirkov, Nikola S., Osmokrović, Predrag V., in Nuclear Technology and Radiation Protection, 37, no. 1 (2022):51-56,
https://doi.org/10.2298/NTRP2201051A . .

Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe

Aranđelović, Nemanja; Nikezić, Dušan P.; Brajović, Dragan; Ramadani, Uzahir

(2022)

TY  - JOUR
AU  - Aranđelović, Nemanja
AU  - Nikezić, Dušan P.
AU  - Brajović, Dragan
AU  - Ramadani, Uzahir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10261
AB  - Recently, the idea of injecting energy with electromagnetic radiation in order to heat the plasma to achieve controlled fusion has been abandoned. This initially favored mechanism was rejected because it has been shown that after a certain temperature the plasma glows and acts as a mirror that reflects electromagnetic radiation. For that reason, today the energy is injected into the plasma by electrons. For this purpose, pulses from several electron beam generators, based on a Marx generator, are synchronously fired into the plasma. In addition to economic problems, the biggest problem of this method is the appearance of jitter, i.e., pulses with a width of about 5 ns are not simply added up but propagated in time due to the impossibility of synchronizing simultaneous triggering of the multiple electronic generators. In order to avoid this, the possibility of monitoring the pulses from an individual electron beam generator for the purpose of online synchronization is investigated in this paper. The voltage pulse monitoring of the electron beam generator was measured by instruments with the fastest response—the electro-optical Kerr effect and a fast capacitive probe. The obtained results showed that the electro-optical Kerr response is somewhat faster but much more complicated, so the use of fast capacitive probes is recommended for practice.
T2  - Fusion Science and Technology
T1  - Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe
SP  - 1
EP  - 10
DO  - 10.1080/15361055.2022.2031690
ER  - 
@article{
author = "Aranđelović, Nemanja and Nikezić, Dušan P. and Brajović, Dragan and Ramadani, Uzahir",
year = "2022",
abstract = "Recently, the idea of injecting energy with electromagnetic radiation in order to heat the plasma to achieve controlled fusion has been abandoned. This initially favored mechanism was rejected because it has been shown that after a certain temperature the plasma glows and acts as a mirror that reflects electromagnetic radiation. For that reason, today the energy is injected into the plasma by electrons. For this purpose, pulses from several electron beam generators, based on a Marx generator, are synchronously fired into the plasma. In addition to economic problems, the biggest problem of this method is the appearance of jitter, i.e., pulses with a width of about 5 ns are not simply added up but propagated in time due to the impossibility of synchronizing simultaneous triggering of the multiple electronic generators. In order to avoid this, the possibility of monitoring the pulses from an individual electron beam generator for the purpose of online synchronization is investigated in this paper. The voltage pulse monitoring of the electron beam generator was measured by instruments with the fastest response—the electro-optical Kerr effect and a fast capacitive probe. The obtained results showed that the electro-optical Kerr response is somewhat faster but much more complicated, so the use of fast capacitive probes is recommended for practice.",
journal = "Fusion Science and Technology",
title = "Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe",
pages = "1-10",
doi = "10.1080/15361055.2022.2031690"
}
Aranđelović, N., Nikezić, D. P., Brajović, D.,& Ramadani, U.. (2022). Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe. in Fusion Science and Technology, 1-10.
https://doi.org/10.1080/15361055.2022.2031690
Aranđelović N, Nikezić DP, Brajović D, Ramadani U. Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe. in Fusion Science and Technology. 2022;:1-10.
doi:10.1080/15361055.2022.2031690 .
Aranđelović, Nemanja, Nikezić, Dušan P., Brajović, Dragan, Ramadani, Uzahir, "Comparison of Measurement Reliability of Nanosecond Rectangular Voltage Pulses by Kerr Effect and by High-Speed Voltage Probe" in Fusion Science and Technology (2022):1-10,
https://doi.org/10.1080/15361055.2022.2031690 . .
1

Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments

Božilov, Aca; Tasić, Viša; Živković, Nenad; Lazović, Ivan; Blagojević, Milan; Mišić, Nikola; Topalović, Dušan

(2022)

TY  - JOUR
AU  - Božilov, Aca
AU  - Tasić, Viša
AU  - Živković, Nenad
AU  - Lazović, Ivan
AU  - Blagojević, Milan
AU  - Mišić, Nikola
AU  - Topalović, Dušan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10372
AB  - Over the last 10 years, as a possible alternative to the conventional approach to air quality monitoring, real-time monitoring systems that use low-cost sensors and sensor platforms have been frequently applied. Generally, the long-term characteristics of low-cost PM sensors and monitoring have not been thoroughly documented except for a few widely used sensors and monitors. This article addresses the laboratory and field validation of three low-cost PM monitors of the same type that use the NOVA SDS011 PM sensor module over a 1-year period. In outdoor environments, we co-located low-cost PM monitors with GRIMM EDM180 monitors at the National Air Quality Monitoring stations. In indoor environments, we co-located them with a Turnkey Osiris PM monitor. Several performance aspects of the PM monitors were examined: operational data coverage, linearity of response, accuracy, precision, and inter-sensor variability. The obtained results show that inter-monitor R values were typically higher than 0.95 regardless of the environment. The tested monitors demonstrate high linearity in comparison with PM10 and PM2.5 concentrations measured in outdoor air with reference-equivalent instrumentation with R2 values ranging from 0.52 up to 0.83. In addition, very good agreement (R2 values ranging from 0.93 up to 0.97) with the gravimetric PM10 and PM2.5 method is obtained in the indoor environment (30 < RH < 70%). High RH (over 70%) negatively affected the PM monitors’ response, especially in the case of PM10 concentrations (high overestimation).
T2  - Environmental Monitoring and Assessment
T1  - Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments
VL  - 194
IS  - 9
SP  - 595
DO  - 10.1007/s10661-022-10290-7
ER  - 
@article{
author = "Božilov, Aca and Tasić, Viša and Živković, Nenad and Lazović, Ivan and Blagojević, Milan and Mišić, Nikola and Topalović, Dušan",
year = "2022",
abstract = "Over the last 10 years, as a possible alternative to the conventional approach to air quality monitoring, real-time monitoring systems that use low-cost sensors and sensor platforms have been frequently applied. Generally, the long-term characteristics of low-cost PM sensors and monitoring have not been thoroughly documented except for a few widely used sensors and monitors. This article addresses the laboratory and field validation of three low-cost PM monitors of the same type that use the NOVA SDS011 PM sensor module over a 1-year period. In outdoor environments, we co-located low-cost PM monitors with GRIMM EDM180 monitors at the National Air Quality Monitoring stations. In indoor environments, we co-located them with a Turnkey Osiris PM monitor. Several performance aspects of the PM monitors were examined: operational data coverage, linearity of response, accuracy, precision, and inter-sensor variability. The obtained results show that inter-monitor R values were typically higher than 0.95 regardless of the environment. The tested monitors demonstrate high linearity in comparison with PM10 and PM2.5 concentrations measured in outdoor air with reference-equivalent instrumentation with R2 values ranging from 0.52 up to 0.83. In addition, very good agreement (R2 values ranging from 0.93 up to 0.97) with the gravimetric PM10 and PM2.5 method is obtained in the indoor environment (30 < RH < 70%). High RH (over 70%) negatively affected the PM monitors’ response, especially in the case of PM10 concentrations (high overestimation).",
journal = "Environmental Monitoring and Assessment",
title = "Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments",
volume = "194",
number = "9",
pages = "595",
doi = "10.1007/s10661-022-10290-7"
}
Božilov, A., Tasić, V., Živković, N., Lazović, I., Blagojević, M., Mišić, N.,& Topalović, D.. (2022). Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments. in Environmental Monitoring and Assessment, 194(9), 595.
https://doi.org/10.1007/s10661-022-10290-7
Božilov A, Tasić V, Živković N, Lazović I, Blagojević M, Mišić N, Topalović D. Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments. in Environmental Monitoring and Assessment. 2022;194(9):595.
doi:10.1007/s10661-022-10290-7 .
Božilov, Aca, Tasić, Viša, Živković, Nenad, Lazović, Ivan, Blagojević, Milan, Mišić, Nikola, Topalović, Dušan, "Performance assessment of NOVA SDS011 low-cost PM sensor in various microenvironments" in Environmental Monitoring and Assessment, 194, no. 9 (2022):595,
https://doi.org/10.1007/s10661-022-10290-7 . .

Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia

Lazović, Ivan; Turanjanin, Valentina; Vučićević, Biljana S.; Jovanović, Marina P.; Jovanović, Rastko D.

(2022)

TY  - JOUR
AU  - Lazović, Ivan
AU  - Turanjanin, Valentina
AU  - Vučićević, Biljana S.
AU  - Jovanović, Marina P.
AU  - Jovanović, Rastko D.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10390
AB  - Greenhouse gases emission as well as total energy consumption in buildings of public importance, such as schools, municipal buildings, health care centers, can be significantly reduced by increasing buildings’ energy efficiency. Buildings’ energy consumption adds up to 37% of total energy consumption in the EU countries. In the Republic of Serbia this amount is significantly higher, about 50%. School buildings are considered as one of the most diverse structures from the point of energy-efficient design and construction. The main aim of this paper is to determine the most appropriate settings for possible improvements in energy efficiency and temperature comfort inside a typical primary school classroom in Serbia. The energy efficiency analysis was performed during the heating season for the naturally ventilated primary school classroom located in the eastern Serbia region. The analysis was performed using novel CFD model, suggested in this paper. The suggested model was used to solve two hypothetical scenarios. The first scenario simulates the temperature field in classroom with current energy characteristic envelope of the school building. The calculated numerical data from the first scenario were compared with in-situ measurements values of temperature and wall heat fluxes and showed satisfying accuracy. The second scenario was simulated to indicate possible improvements, which would allow energy consumption decrease and thermal quality enhancement. The analyzed results, calculated using the suggested numerical model under the second scenario conditions, showed that using appropriate set of measures, it is possible to obtain desired temperature comfort levels without need for increase in the building energy consumption.
T2  - Thermal Science
T1  - Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia
VL  - 26
IS  - 4 Part B
SP  - 3605
EP  - 3618
DO  - 10.2298/TSCI220125067L
ER  - 
@article{
author = "Lazović, Ivan and Turanjanin, Valentina and Vučićević, Biljana S. and Jovanović, Marina P. and Jovanović, Rastko D.",
year = "2022",
abstract = "Greenhouse gases emission as well as total energy consumption in buildings of public importance, such as schools, municipal buildings, health care centers, can be significantly reduced by increasing buildings’ energy efficiency. Buildings’ energy consumption adds up to 37% of total energy consumption in the EU countries. In the Republic of Serbia this amount is significantly higher, about 50%. School buildings are considered as one of the most diverse structures from the point of energy-efficient design and construction. The main aim of this paper is to determine the most appropriate settings for possible improvements in energy efficiency and temperature comfort inside a typical primary school classroom in Serbia. The energy efficiency analysis was performed during the heating season for the naturally ventilated primary school classroom located in the eastern Serbia region. The analysis was performed using novel CFD model, suggested in this paper. The suggested model was used to solve two hypothetical scenarios. The first scenario simulates the temperature field in classroom with current energy characteristic envelope of the school building. The calculated numerical data from the first scenario were compared with in-situ measurements values of temperature and wall heat fluxes and showed satisfying accuracy. The second scenario was simulated to indicate possible improvements, which would allow energy consumption decrease and thermal quality enhancement. The analyzed results, calculated using the suggested numerical model under the second scenario conditions, showed that using appropriate set of measures, it is possible to obtain desired temperature comfort levels without need for increase in the building energy consumption.",
journal = "Thermal Science",
title = "Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia",
volume = "26",
number = "4 Part B",
pages = "3605-3618",
doi = "10.2298/TSCI220125067L"
}
Lazović, I., Turanjanin, V., Vučićević, B. S., Jovanović, M. P.,& Jovanović, R. D.. (2022). Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia. in Thermal Science, 26(4 Part B), 3605-3618.
https://doi.org/10.2298/TSCI220125067L
Lazović I, Turanjanin V, Vučićević BS, Jovanović MP, Jovanović RD. Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia. in Thermal Science. 2022;26(4 Part B):3605-3618.
doi:10.2298/TSCI220125067L .
Lazović, Ivan, Turanjanin, Valentina, Vučićević, Biljana S., Jovanović, Marina P., Jovanović, Rastko D., "Influence of the building energy efficiency on indoor air temperature: The case of a typical school classroom in Serbia" in Thermal Science, 26, no. 4 Part B (2022):3605-3618,
https://doi.org/10.2298/TSCI220125067L . .

Higgs Physics with Future Linear Colliders

Božović-Jelisavčić, Ivanka

(2022)

TY  - JOUR
AU  - Božović-Jelisavčić, Ivanka
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10434
AB  - This paper, based on the invited talk at the 20th Lomonosov Conference of Elementary Particle Physics, provides short overview of the Higgs physics program at future linear colliders as Higgs factories.
T2  - Moscow University Physics Bulletin
T1  - Higgs Physics with Future Linear Colliders
VL  - 77
IS  - 2
SP  - 180
EP  - 183
DO  - 10.3103/S0027134922020199
ER  - 
@article{
author = "Božović-Jelisavčić, Ivanka",
year = "2022",
abstract = "This paper, based on the invited talk at the 20th Lomonosov Conference of Elementary Particle Physics, provides short overview of the Higgs physics program at future linear colliders as Higgs factories.",
journal = "Moscow University Physics Bulletin",
title = "Higgs Physics with Future Linear Colliders",
volume = "77",
number = "2",
pages = "180-183",
doi = "10.3103/S0027134922020199"
}
Božović-Jelisavčić, I.. (2022). Higgs Physics with Future Linear Colliders. in Moscow University Physics Bulletin, 77(2), 180-183.
https://doi.org/10.3103/S0027134922020199
Božović-Jelisavčić I. Higgs Physics with Future Linear Colliders. in Moscow University Physics Bulletin. 2022;77(2):180-183.
doi:10.3103/S0027134922020199 .
Božović-Jelisavčić, Ivanka, "Higgs Physics with Future Linear Colliders" in Moscow University Physics Bulletin, 77, no. 2 (2022):180-183,
https://doi.org/10.3103/S0027134922020199 . .

Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials

Đukić, Dunja; Šuljagić, Marija; Anđelković, Ljubica; Pavlović, Vera; Bučevac, Dušan; Vrbica, Boško; Mirković, Miljana

(2022)

TY  - JOUR
AU  - Đukić, Dunja
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Pavlović, Vera
AU  - Bučevac, Dušan
AU  - Vrbica, Boško
AU  - Mirković, Miljana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10433
AB  - The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.
T2  - Science of Sintering
T1  - Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials
VL  - 54
IS  - 3
ER  - 
@article{
author = "Đukić, Dunja and Šuljagić, Marija and Anđelković, Ljubica and Pavlović, Vera and Bučevac, Dušan and Vrbica, Boško and Mirković, Miljana",
year = "2022",
abstract = "The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.",
journal = "Science of Sintering",
title = "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials",
volume = "54",
number = "3"
}
Đukić, D., Šuljagić, M., Anđelković, L., Pavlović, V., Bučevac, D., Vrbica, B.,& Mirković, M.. (2022). Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering, 54(3).
Đukić D, Šuljagić M, Anđelković L, Pavlović V, Bučevac D, Vrbica B, Mirković M. Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering. 2022;54(3)..
Đukić, Dunja, Šuljagić, Marija, Anđelković, Ljubica, Pavlović, Vera, Bučevac, Dušan, Vrbica, Boško, Mirković, Miljana, "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials" in Science of Sintering, 54, no. 3 (2022).

Physico-chemical and mechanical properties of geopolymer/zircon composites

Kljajević, Ljiljana M.; Nenadović, Miloš; Petković, Marijana; Bučevac, Dušan; Pavlović, Vladimir B.; Mladenović-Nikolić, Nataša; Nenadović, Snežana B.

(2022)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Miloš
AU  - Petković, Marijana
AU  - Bučevac, Dušan
AU  - Pavlović, Vladimir B.
AU  - Mladenović-Nikolić, Nataša
AU  - Nenadović, Snežana B.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10246
AB  - The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin with alkali activators. Characterization of the obtained geopolymers was performed by X-ray diffraction (XRD), Scanning electron microscope (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF). XRD results did not confirmed the formation of interconnected phases between added zircon, starting aluminum silicates and alkali activators. Compressive strength of prepared geopolymer was examined. The maximum obtained compressive strength of 70.15 MPa was measured in sample containing the smallest fraction of zircon, i.e., 10 wt.%. Addition of larger amount of zircon (20 wt.%) hinders the progress of geopolymerization reaction and consequently decreases compressive strength.
T2  - Science of Sintering
T1  - Physico-chemical and mechanical properties of geopolymer/zircon composites
VL  - 54
IS  - 1
SP  - 11
EP  - 24
DO  - 10.2298/SOS2201011K
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Nenadović, Miloš and Petković, Marijana and Bučevac, Dušan and Pavlović, Vladimir B. and Mladenović-Nikolić, Nataša and Nenadović, Snežana B.",
year = "2022",
abstract = "The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin with alkali activators. Characterization of the obtained geopolymers was performed by X-ray diffraction (XRD), Scanning electron microscope (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF). XRD results did not confirmed the formation of interconnected phases between added zircon, starting aluminum silicates and alkali activators. Compressive strength of prepared geopolymer was examined. The maximum obtained compressive strength of 70.15 MPa was measured in sample containing the smallest fraction of zircon, i.e., 10 wt.%. Addition of larger amount of zircon (20 wt.%) hinders the progress of geopolymerization reaction and consequently decreases compressive strength.",
journal = "Science of Sintering",
title = "Physico-chemical and mechanical properties of geopolymer/zircon composites",
volume = "54",
number = "1",
pages = "11-24",
doi = "10.2298/SOS2201011K"
}
Kljajević, L. M., Nenadović, M., Petković, M., Bučevac, D., Pavlović, V. B., Mladenović-Nikolić, N.,& Nenadović, S. B.. (2022). Physico-chemical and mechanical properties of geopolymer/zircon composites. in Science of Sintering, 54(1), 11-24.
https://doi.org/10.2298/SOS2201011K
Kljajević LM, Nenadović M, Petković M, Bučevac D, Pavlović VB, Mladenović-Nikolić N, Nenadović SB. Physico-chemical and mechanical properties of geopolymer/zircon composites. in Science of Sintering. 2022;54(1):11-24.
doi:10.2298/SOS2201011K .
Kljajević, Ljiljana M., Nenadović, Miloš, Petković, Marijana, Bučevac, Dušan, Pavlović, Vladimir B., Mladenović-Nikolić, Nataša, Nenadović, Snežana B., "Physico-chemical and mechanical properties of geopolymer/zircon composites" in Science of Sintering, 54, no. 1 (2022):11-24,
https://doi.org/10.2298/SOS2201011K . .

High-density ceramics obtained by andesite basalt sintering

Pavkov, Vladimir; Bakić, Gordana; Maksimović, Vesna; Cvijović-Alagić, Ivana; Prekajski-Đorđević, Marija D.; Bučevac, Dušan; Matović, Branko

(2022)

TY  - JOUR
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Prekajski-Đorđević, Marija D.
AU  - Bučevac, Dušan
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10384
AB  - In the present study, andesite basalt originated from the deposit site “Donje Jarinje”, Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070 and 1080°C, and afterwards the sintering duration was varied from 30 to 240min at the optimal sintering temperature of 1060°C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness and fracture toughness complemented with X-ray diffraction, optical light microscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080°C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7GPa and 2.2MPa•m1/2, respectively, were achieved for the andesite basalt sintered at 1060°C for 60min in the air. The results of the present study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications.
T2  - Processing and Application of Ceramics
T1  - High-density ceramics obtained by andesite basalt sintering
VL  - 16
IS  - 2
SP  - 143
EP  - 152
DO  - 10.2298/PAC2202143P
ER  - 
@article{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Prekajski-Đorđević, Marija D. and Bučevac, Dušan and Matović, Branko",
year = "2022",
abstract = "In the present study, andesite basalt originated from the deposit site “Donje Jarinje”, Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070 and 1080°C, and afterwards the sintering duration was varied from 30 to 240min at the optimal sintering temperature of 1060°C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness and fracture toughness complemented with X-ray diffraction, optical light microscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080°C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7GPa and 2.2MPa•m1/2, respectively, were achieved for the andesite basalt sintered at 1060°C for 60min in the air. The results of the present study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications.",
journal = "Processing and Application of Ceramics",
title = "High-density ceramics obtained by andesite basalt sintering",
volume = "16",
number = "2",
pages = "143-152",
doi = "10.2298/PAC2202143P"
}
Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Prekajski-Đorđević, M. D., Bučevac, D.,& Matović, B.. (2022). High-density ceramics obtained by andesite basalt sintering. in Processing and Application of Ceramics, 16(2), 143-152.
https://doi.org/10.2298/PAC2202143P
Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Prekajski-Đorđević MD, Bučevac D, Matović B. High-density ceramics obtained by andesite basalt sintering. in Processing and Application of Ceramics. 2022;16(2):143-152.
doi:10.2298/PAC2202143P .
Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Prekajski-Đorđević, Marija D., Bučevac, Dušan, Matović, Branko, "High-density ceramics obtained by andesite basalt sintering" in Processing and Application of Ceramics, 16, no. 2 (2022):143-152,
https://doi.org/10.2298/PAC2202143P . .

Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite

Omerašević, Mia; Baščarević, Zvezdana; Vujasin, Radojka; Devečerski, Aleksandar; Bučevac, Dušan

(2022)

TY  - JOUR
AU  - Omerašević, Mia
AU  - Baščarević, Zvezdana
AU  - Vujasin, Radojka
AU  - Devečerski, Aleksandar
AU  - Bučevac, Dušan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10432
AB  - Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.
T2  - Science of Sintering
T1  - Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite
VL  - 54
IS  - 3
SP  - 349
EP  - 358
DO  - 10.2298/SOS2203349O
ER  - 
@article{
author = "Omerašević, Mia and Baščarević, Zvezdana and Vujasin, Radojka and Devečerski, Aleksandar and Bučevac, Dušan",
year = "2022",
abstract = "Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.",
journal = "Science of Sintering",
title = "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite",
volume = "54",
number = "3",
pages = "349-358",
doi = "10.2298/SOS2203349O"
}
Omerašević, M., Baščarević, Z., Vujasin, R., Devečerski, A.,& Bučevac, D.. (2022). Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering, 54(3), 349-358.
https://doi.org/10.2298/SOS2203349O
Omerašević M, Baščarević Z, Vujasin R, Devečerski A, Bučevac D. Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering. 2022;54(3):349-358.
doi:10.2298/SOS2203349O .
Omerašević, Mia, Baščarević, Zvezdana, Vujasin, Radojka, Devečerski, Aleksandar, Bučevac, Dušan, "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite" in Science of Sintering, 54, no. 3 (2022):349-358,
https://doi.org/10.2298/SOS2203349O . .