TY  - JOUR
AU  - Marković, Snežana
AU  - Radojković, Bojana
AU  - Jegdić, Bore
AU  - Jovanović, Aleksandar
AU  - Stojanović, Jovica
AU  - Trumić, Milan
AU  - Manojlović, Vaso
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7408
AB  - The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements.
AB  - Ispitivano  je  koroziono  ponašanje  tri  vrste legura(dva  nisko-legirana  ugljenična  čelika  i  jedanuzorakje nerđajuće gvožđe sa ~15% Cr), u rastvoru koji simulira morsku vodu (3% rastvor NaCl, pH 8,1). Ispitani uzorcise koriste za proizvodnju čeličnih kugli koje se primenjuju u mlinovima za mlevenje  bakarnih  i  drugih  ruda. Koroziona  ispitivanja  su  izvedena  primenom  tri  elektrohemijske metode, na sobnoj temperaturi u prisustvu atmosferskog kiseonika. Korišćene su metoda linearne polarizacione   otpornosti   (LPR),   metoda   elektrohemijske   impedansne   spektroskopije   (EIS)   i metoda  linearne  promene  potencijala  (LSV).  Na  osnovu  merenja  LPR  i  EIS  metodama  (kao nerazarajućim  metodama),  određena  je  vrednost  polarizacione  otpornosti  (Rp),   a   zatim   je izračunata vrednost brzine opšte korozije (vkor)  ispitivanih uzoraka.  Dobijene  vrednosti  za  brzinu opšte  korozije  se  mogu  koristiti  za  izračunavanje  veka  trajanja  kugli  u  uslovima  eksploatacije (morska  voda).  Izgled  površine  ispitivanih uzorakanakon  izvođenja  LSV  metode  pokazao  je prisustvo  lokalizovane  korozije  (formirane  su  jamice,  pitovi)  na  ispitivanim uzorcima,  posebno  na nerđajućem gvožđu. Prema tome, LSV metoda nije pogodna za određivanje brzine opšte korozije ispitivanih čelika u morskoj vodi. Ovaj oblik korozije javlja se pri visokim anodnim polarizacijama tokom izvođenja LSV merenja.
PB  - Inženjersko društvo za koroziju
T2  - Zaštita materijala
T1  - Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution
T1  - Koroziono ponašanje čeličnih kuglica za mlevenje sa visokim i niskim sadržajem hroma u rastvoru hlorida
EP  - 53
IS  - 1
SP  - 45
VL  - 65
DO  - 10.62638/zasmat998
ER  - 

@article{
author = "Marković, Snežana and Radojković, Bojana and Jegdić, Bore and Jovanović, Aleksandar and Stojanović, Jovica and Trumić, Milan and Manojlović, Vaso",
year = "2024",
abstract = "The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements., Ispitivano  je  koroziono  ponašanje  tri  vrste legura(dva  nisko-legirana  ugljenična  čelika  i  jedanuzorakje nerđajuće gvožđe sa ~15% Cr), u rastvoru koji simulira morsku vodu (3% rastvor NaCl, pH 8,1). Ispitani uzorcise koriste za proizvodnju čeličnih kugli koje se primenjuju u mlinovima za mlevenje  bakarnih  i  drugih  ruda. Koroziona  ispitivanja  su  izvedena  primenom  tri  elektrohemijske metode, na sobnoj temperaturi u prisustvu atmosferskog kiseonika. Korišćene su metoda linearne polarizacione   otpornosti   (LPR),   metoda   elektrohemijske   impedansne   spektroskopije   (EIS)   i metoda  linearne  promene  potencijala  (LSV).  Na  osnovu  merenja  LPR  i  EIS  metodama  (kao nerazarajućim  metodama),  određena  je  vrednost  polarizacione  otpornosti  (Rp),   a   zatim   je izračunata vrednost brzine opšte korozije (vkor)  ispitivanih uzoraka.  Dobijene  vrednosti  za  brzinu opšte  korozije  se  mogu  koristiti  za  izračunavanje  veka  trajanja  kugli  u  uslovima  eksploatacije (morska  voda).  Izgled  površine  ispitivanih uzorakanakon  izvođenja  LSV  metode  pokazao  je prisustvo  lokalizovane  korozije  (formirane  su  jamice,  pitovi)  na  ispitivanim uzorcima,  posebno  na nerđajućem gvožđu. Prema tome, LSV metoda nije pogodna za određivanje brzine opšte korozije ispitivanih čelika u morskoj vodi. Ovaj oblik korozije javlja se pri visokim anodnim polarizacijama tokom izvođenja LSV merenja.",
publisher = "Inženjersko društvo za koroziju",
journal = "Zaštita materijala",
title = "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution, Koroziono ponašanje čeličnih kuglica za mlevenje sa visokim i niskim sadržajem hroma u rastvoru hlorida",
pages = "53-45",
number = "1",
volume = "65",
doi = "10.62638/zasmat998"
}

Marković, S., Radojković, B., Jegdić, B., Jovanović, A., Stojanović, J., Trumić, M.,& Manojlović, V.. (2024). Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zaštita materijala
Inženjersko društvo za koroziju., 65(1), 45-53.
https://doi.org/10.62638/zasmat998

Marković S, Radojković B, Jegdić B, Jovanović A, Stojanović J, Trumić M, Manojlović V. Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zaštita materijala. 2024;65(1):45-53.
doi:10.62638/zasmat998 .

Marković, Snežana, Radojković, Bojana, Jegdić, Bore, Jovanović, Aleksandar, Stojanović, Jovica, Trumić, Milan, Manojlović, Vaso, "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution" in Zaštita materijala, 65, no. 1 (2024):45-53,
https://doi.org/10.62638/zasmat998 . .

TY  - JOUR
AU  - Obradović, Ana
AU  - Zizić, Jovana
AU  - Trišović, Nemanja
AU  - Božić, Bojan
AU  - Ušćumlić, Gordana
AU  - Božić, Biljana
AU  - Marković, Snežana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2427
AB  - Antioxidant effects of twelve 3-substituted-5,5-diphenylhydantoins in concentrations of 0.01, 0.1, 1, 10, and 100 mu M on human colon cancer cell line HCT-116 were determined 24 h after treatment. The concentrations of superoxide anion radical (O(2)radical anion), nitrites (NO2-), and total glutathione were determined spectrophotometrically. Results indicated that treatment with all compounds induced a decrease in O(2)radical anion and an increase in NO(2)(-)concentrations in HCT-116 cells. Treatment with all compounds resulted in an increase in glutathione, and this indicates changes in redox homeostasis. Based on the obtained results, the investigated hydantoins act as antioxidants because they decrease the production of superoxide anion radical and increase concentrations of glutathione, but they also induce an increase in nitrite production.
PB  - Tubitak Scientific & Technical Research Council Turkey, Ankara
T2  - Turkish Journal of Biology
T1  - Evaluation of antioxidative effects of twelve 3-substituted-5,5-diphenylhydantoins on human colon cancer cell line HCT-116
EP  - 747
IS  - 6
SP  - 741
VL  - 37
DO  - 10.3906/biy-1302-15
ER  - 

@article{
author = "Obradović, Ana and Zizić, Jovana and Trišović, Nemanja and Božić, Bojan and Ušćumlić, Gordana and Božić, Biljana and Marković, Snežana",
year = "2013",
abstract = "Antioxidant effects of twelve 3-substituted-5,5-diphenylhydantoins in concentrations of 0.01, 0.1, 1, 10, and 100 mu M on human colon cancer cell line HCT-116 were determined 24 h after treatment. The concentrations of superoxide anion radical (O(2)radical anion), nitrites (NO2-), and total glutathione were determined spectrophotometrically. Results indicated that treatment with all compounds induced a decrease in O(2)radical anion and an increase in NO(2)(-)concentrations in HCT-116 cells. Treatment with all compounds resulted in an increase in glutathione, and this indicates changes in redox homeostasis. Based on the obtained results, the investigated hydantoins act as antioxidants because they decrease the production of superoxide anion radical and increase concentrations of glutathione, but they also induce an increase in nitrite production.",
publisher = "Tubitak Scientific & Technical Research Council Turkey, Ankara",
journal = "Turkish Journal of Biology",
title = "Evaluation of antioxidative effects of twelve 3-substituted-5,5-diphenylhydantoins on human colon cancer cell line HCT-116",
pages = "747-741",
number = "6",
volume = "37",
doi = "10.3906/biy-1302-15"
}

Obradović, A., Zizić, J., Trišović, N., Božić, B., Ušćumlić, G., Božić, B.,& Marković, S.. (2013). Evaluation of antioxidative effects of twelve 3-substituted-5,5-diphenylhydantoins on human colon cancer cell line HCT-116. in Turkish Journal of Biology
Tubitak Scientific & Technical Research Council Turkey, Ankara., 37(6), 741-747.
https://doi.org/10.3906/biy-1302-15

Obradović A, Zizić J, Trišović N, Božić B, Ušćumlić G, Božić B, Marković S. Evaluation of antioxidative effects of twelve 3-substituted-5,5-diphenylhydantoins on human colon cancer cell line HCT-116. in Turkish Journal of Biology. 2013;37(6):741-747.
doi:10.3906/biy-1302-15 .

Obradović, Ana, Zizić, Jovana, Trišović, Nemanja, Božić, Bojan, Ušćumlić, Gordana, Božić, Biljana, Marković, Snežana, "Evaluation of antioxidative effects of twelve 3-substituted-5,5-diphenylhydantoins on human colon cancer cell line HCT-116" in Turkish Journal of Biology, 37, no. 6 (2013):741-747,
https://doi.org/10.3906/biy-1302-15 . .

TY  - JOUR
AU  - Trišović, Nemanja
AU  - Božić, Bojan
AU  - Obradović, Ana
AU  - Stefanović, Olgica
AU  - Marković, Snežana
AU  - Čomić, Ljiljana
AU  - Božić, Biljana
AU  - Ušćumlić, Gordana
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1797
AB  - A series of twelve 3-substituted-5,5-diphenylhydantoins was synthesized, including some whose anticonvulsant activities have already been reported in the literature. Their antiproliferative activities against HCT-116 human colon carcinoma cells were evaluated to determine structure-activity relationships. Almost all of the compounds exhibited statistically significant antiproliferative effects at a concentration of 100 μM, while the derivative bearing a benzyl group was active even at lower concentrations. Moreover, their in vitro antibacterial activities against Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 and clinical isolates of Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis and Staphylococcus aureus were evaluated. Only the 3-isopropyl and 3-benzyl derivatives showed weak antibacterial activities against the Gram-positive bacterium E. faecalis and the Gram-negative bacteria E. coli ATCC 25922 and E. coli.
AB  - Sintetisana je serija od dvanaest 3-supstituisanih-5,5-difenilhidantoina, koja obuhvata neke od derivata čije su antikonvulzivne aktivnosti poznate u literaturi. Određena je njihova antiproliferativna aktivnost prema ćelijskoj liniji humanog karcinoma kolona, kako bi se utvrdio uticaj strukture na aktivnost. Skoro sva jedinjenja ispoljavaju antiproliferativan efekat u koncentraciji od 100 μM, dok je derivat sa benzil grupom aktivan i u nižim koncentracijama. Dodatno je određena i antibakterijska aktivnost proučavanih jedinjenja prema Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 i kliničkim izolatima Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis i Staphylococcus aureus. 3-Izopropil i 3-benzil derivati pokazuju slabu aktivnost prema gram-pozitivnoj bakteriji E. faecalis i gram-negativnim bakterijama E. coli ATCC 25922 i E. coli.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Structure-activity relationships of 3-substituted-5,5-diphenylhydantoins as potential antiproliferative and antimicrobial agents
T1  - Uticaj strukture na antiproliferativnu i antibakterijsku aktivnost 3-supstituisanih-5,5-difenilhidantoina
EP  - 1606
IS  - 12
SP  - 1597
VL  - 76
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1797
ER  - 

@article{
author = "Trišović, Nemanja and Božić, Bojan and Obradović, Ana and Stefanović, Olgica and Marković, Snežana and Čomić, Ljiljana and Božić, Biljana and Ušćumlić, Gordana",
year = "2011",
abstract = "A series of twelve 3-substituted-5,5-diphenylhydantoins was synthesized, including some whose anticonvulsant activities have already been reported in the literature. Their antiproliferative activities against HCT-116 human colon carcinoma cells were evaluated to determine structure-activity relationships. Almost all of the compounds exhibited statistically significant antiproliferative effects at a concentration of 100 μM, while the derivative bearing a benzyl group was active even at lower concentrations. Moreover, their in vitro antibacterial activities against Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 and clinical isolates of Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis and Staphylococcus aureus were evaluated. Only the 3-isopropyl and 3-benzyl derivatives showed weak antibacterial activities against the Gram-positive bacterium E. faecalis and the Gram-negative bacteria E. coli ATCC 25922 and E. coli., Sintetisana je serija od dvanaest 3-supstituisanih-5,5-difenilhidantoina, koja obuhvata neke od derivata čije su antikonvulzivne aktivnosti poznate u literaturi. Određena je njihova antiproliferativna aktivnost prema ćelijskoj liniji humanog karcinoma kolona, kako bi se utvrdio uticaj strukture na aktivnost. Skoro sva jedinjenja ispoljavaju antiproliferativan efekat u koncentraciji od 100 μM, dok je derivat sa benzil grupom aktivan i u nižim koncentracijama. Dodatno je određena i antibakterijska aktivnost proučavanih jedinjenja prema Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 i kliničkim izolatima Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis i Staphylococcus aureus. 3-Izopropil i 3-benzil derivati pokazuju slabu aktivnost prema gram-pozitivnoj bakteriji E. faecalis i gram-negativnim bakterijama E. coli ATCC 25922 i E. coli.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Structure-activity relationships of 3-substituted-5,5-diphenylhydantoins as potential antiproliferative and antimicrobial agents, Uticaj strukture na antiproliferativnu i antibakterijsku aktivnost 3-supstituisanih-5,5-difenilhidantoina",
pages = "1606-1597",
number = "12",
volume = "76",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1797"
}

Trišović, N., Božić, B., Obradović, A., Stefanović, O., Marković, S., Čomić, L., Božić, B.,& Ušćumlić, G.. (2011). Structure-activity relationships of 3-substituted-5,5-diphenylhydantoins as potential antiproliferative and antimicrobial agents. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 76(12), 1597-1606.
https://hdl.handle.net/21.15107/rcub_technorep_1797

Trišović N, Božić B, Obradović A, Stefanović O, Marković S, Čomić L, Božić B, Ušćumlić G. Structure-activity relationships of 3-substituted-5,5-diphenylhydantoins as potential antiproliferative and antimicrobial agents. in Journal of the Serbian Chemical Society. 2011;76(12):1597-1606.
https://hdl.handle.net/21.15107/rcub_technorep_1797 .

Trišović, Nemanja, Božić, Bojan, Obradović, Ana, Stefanović, Olgica, Marković, Snežana, Čomić, Ljiljana, Božić, Biljana, Ušćumlić, Gordana, "Structure-activity relationships of 3-substituted-5,5-diphenylhydantoins as potential antiproliferative and antimicrobial agents" in Journal of the Serbian Chemical Society, 76, no. 12 (2011):1597-1606,
https://hdl.handle.net/21.15107/rcub_technorep_1797 .