TY  - JOUR
AU  - Mitrović, Nenad
AU  - Milošević, Miloš
AU  - Momčilović, Nikola
AU  - Petrović, Aleksandar
AU  - Sedmak, Aleksandar
AU  - Maneski, Taško
AU  - Zrilić, Milorad
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5683
AB  - Experimental and Numerical Analysis of Local Mechanical Properties of Globe Valve Housing One of the most widely used industrial valves is globe valve. Due to wide industrial application, the valve is subjected to various types of loads - static, dynamic, thermal etc. which causes valve housing failures. Based on previous experiences and research, valve housing failure is expected in the areas of high stress concentration, such as high geometrical discontinuity. This paper is focused to investigate the possibility to analyze local strain fields of geometrically complex globe valve housing subjected to internal pressure using non-contact 3D optical deformation analysis in order to verify numerical model. Experimental system consists of cameras for 3D displacement and strain analysis and software Aramis. Using the Finite Element Method (FEM), numerical model subjected to different loads was analyzed. It is found that the predictions from the model agree well with experimental results as the result differences between two methods in the area of the highest strain values vary 30 % and in the spherical and cylindrical parts result variation is 14.8 %. Experimental and numerical results demonstrate that the experimental method is adequate for solving geometrically complex problems and determining local mechanical properties.
T2  - Chemicke Listy
T1  - Experimental and numerical analysis of local mechanical properties of globe valve housing
EP  - s494
IS  - SUPPL. 3
SP  - s491
VL  - 106
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1459
ER  - 

@article{
author = "Mitrović, Nenad and Milošević, Miloš and Momčilović, Nikola and Petrović, Aleksandar and Sedmak, Aleksandar and Maneski, Taško and Zrilić, Milorad",
year = "2012",
abstract = "Experimental and Numerical Analysis of Local Mechanical Properties of Globe Valve Housing One of the most widely used industrial valves is globe valve. Due to wide industrial application, the valve is subjected to various types of loads - static, dynamic, thermal etc. which causes valve housing failures. Based on previous experiences and research, valve housing failure is expected in the areas of high stress concentration, such as high geometrical discontinuity. This paper is focused to investigate the possibility to analyze local strain fields of geometrically complex globe valve housing subjected to internal pressure using non-contact 3D optical deformation analysis in order to verify numerical model. Experimental system consists of cameras for 3D displacement and strain analysis and software Aramis. Using the Finite Element Method (FEM), numerical model subjected to different loads was analyzed. It is found that the predictions from the model agree well with experimental results as the result differences between two methods in the area of the highest strain values vary 30 % and in the spherical and cylindrical parts result variation is 14.8 %. Experimental and numerical results demonstrate that the experimental method is adequate for solving geometrically complex problems and determining local mechanical properties.",
journal = "Chemicke Listy",
title = "Experimental and numerical analysis of local mechanical properties of globe valve housing",
pages = "s494-s491",
number = "SUPPL. 3",
volume = "106",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1459"
}

Mitrović, N., Milošević, M., Momčilović, N., Petrović, A., Sedmak, A., Maneski, T.,& Zrilić, M.. (2012). Experimental and numerical analysis of local mechanical properties of globe valve housing. in Chemicke Listy, 106(SUPPL. 3), s491-s494.
https://hdl.handle.net/21.15107/rcub_machinery_1459

Mitrović N, Milošević M, Momčilović N, Petrović A, Sedmak A, Maneski T, Zrilić M. Experimental and numerical analysis of local mechanical properties of globe valve housing. in Chemicke Listy. 2012;106(SUPPL. 3):s491-s494.
https://hdl.handle.net/21.15107/rcub_machinery_1459 .

Mitrović, Nenad, Milošević, Miloš, Momčilović, Nikola, Petrović, Aleksandar, Sedmak, Aleksandar, Maneski, Taško, Zrilić, Milorad, "Experimental and numerical analysis of local mechanical properties of globe valve housing" in Chemicke Listy, 106, no. SUPPL. 3 (2012):s491-s494,
https://hdl.handle.net/21.15107/rcub_machinery_1459 .

TY  - JOUR
AU  - Dekic, Sanja
AU  - Milosavljević, Slobodan M.
AU  - Vajs, Vlatka
AU  - Jović, Slobodan
AU  - Petrović, Aleksandar
AU  - Nikićević, Ninoslav
AU  - Manojlović, Verica
AU  - Nedović, Viktor A.
AU  - Tešević, Vele
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5582
AB  - Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with numerous pharmacological activities, such as anti-cancer, antiviral, neuroprotective and anti-aging. Red wine is the main source of the compound and an easy way of including resveratrol in the human diet. In this study, the most popular commercial Serbian wines (red, white and rose-type) were analyzed for their content of trans- and cis-resveratrol. The analysis was performed by HPLC with a UV detector. Prior to the injection, phenolic compounds were extracted onto a LiChrolut RP18 bonded silica cartridge. The concentration of trans-resveratrol ranged from 0.11 to 1.69 mg L-1 and cis-resveratrol from 0.12 to 1.49 mg L-1.
AB  - Metodom tečne hromatografije (HPLC) ispitan je sadržaj slobodnog oblika trans- i cis-rezveratrola u osamnaest komercijalnih uzoraka (10 crvenih, 7 belih i 1 roze) srpskih vina. Svi uzorci su pre hromatografije ekstrahovani SPE tehnikom na LiChrolut RP18 koloni. trans-Rezveratrol je detektovan u 17 od 18 analiziranih uzoraka vina sa prosečnom koncentracijama od 0,78 mg l-1 za crvena vina i 0,23 mg l-1 za bela vina. Najviša koncentracija trans-rezveratrola je nađena u uzorku crvenog vina Cabernet Sauvignon berbe 2002 godine. cis-Rezveratrol je detektovan u 12 od 18 analiziranih uzoraka vina sa prosečnom koncentracijom 0,55 mg l-1 za crvena vina, dok je u belim vinima od analiziranih 7 uzoraka detektovan samo u 2 uzorka sa koncentracijama 0,12 i 0,49 mg l-1. Visok sadržaj cis-rezveratrola u nekim uzorcima je verovatno posledica izomerizacije trans- u cis-rezveratrol tokom procesa proizvodnje vina.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Trans- and cis-resveratrol concentration in wines produced in Serbia
T1  - Koncentracija trans- i cis-rezveratrola u vinima proizvedenim u Srbiji
EP  - 1037
IS  - 11
SP  - 1027
VL  - 73
DO  - 10.2298/JSC0811027D
ER  - 

@article{
author = "Dekic, Sanja and Milosavljević, Slobodan M. and Vajs, Vlatka and Jović, Slobodan and Petrović, Aleksandar and Nikićević, Ninoslav and Manojlović, Verica and Nedović, Viktor A. and Tešević, Vele",
year = "2008",
abstract = "Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with numerous pharmacological activities, such as anti-cancer, antiviral, neuroprotective and anti-aging. Red wine is the main source of the compound and an easy way of including resveratrol in the human diet. In this study, the most popular commercial Serbian wines (red, white and rose-type) were analyzed for their content of trans- and cis-resveratrol. The analysis was performed by HPLC with a UV detector. Prior to the injection, phenolic compounds were extracted onto a LiChrolut RP18 bonded silica cartridge. The concentration of trans-resveratrol ranged from 0.11 to 1.69 mg L-1 and cis-resveratrol from 0.12 to 1.49 mg L-1., Metodom tečne hromatografije (HPLC) ispitan je sadržaj slobodnog oblika trans- i cis-rezveratrola u osamnaest komercijalnih uzoraka (10 crvenih, 7 belih i 1 roze) srpskih vina. Svi uzorci su pre hromatografije ekstrahovani SPE tehnikom na LiChrolut RP18 koloni. trans-Rezveratrol je detektovan u 17 od 18 analiziranih uzoraka vina sa prosečnom koncentracijama od 0,78 mg l-1 za crvena vina i 0,23 mg l-1 za bela vina. Najviša koncentracija trans-rezveratrola je nađena u uzorku crvenog vina Cabernet Sauvignon berbe 2002 godine. cis-Rezveratrol je detektovan u 12 od 18 analiziranih uzoraka vina sa prosečnom koncentracijom 0,55 mg l-1 za crvena vina, dok je u belim vinima od analiziranih 7 uzoraka detektovan samo u 2 uzorka sa koncentracijama 0,12 i 0,49 mg l-1. Visok sadržaj cis-rezveratrola u nekim uzorcima je verovatno posledica izomerizacije trans- u cis-rezveratrol tokom procesa proizvodnje vina.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Trans- and cis-resveratrol concentration in wines produced in Serbia, Koncentracija trans- i cis-rezveratrola u vinima proizvedenim u Srbiji",
pages = "1037-1027",
number = "11",
volume = "73",
doi = "10.2298/JSC0811027D"
}

Dekic, S., Milosavljević, S. M., Vajs, V., Jović, S., Petrović, A., Nikićević, N., Manojlović, V., Nedović, V. A.,& Tešević, V.. (2008). Trans- and cis-resveratrol concentration in wines produced in Serbia. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 73(11), 1027-1037.
https://doi.org/10.2298/JSC0811027D

Dekic S, Milosavljević SM, Vajs V, Jović S, Petrović A, Nikićević N, Manojlović V, Nedović VA, Tešević V. Trans- and cis-resveratrol concentration in wines produced in Serbia. in Journal of the Serbian Chemical Society. 2008;73(11):1027-1037.
doi:10.2298/JSC0811027D .

Dekic, Sanja, Milosavljević, Slobodan M., Vajs, Vlatka, Jović, Slobodan, Petrović, Aleksandar, Nikićević, Ninoslav, Manojlović, Verica, Nedović, Viktor A., Tešević, Vele, "Trans- and cis-resveratrol concentration in wines produced in Serbia" in Journal of the Serbian Chemical Society, 73, no. 11 (2008):1027-1037,
https://doi.org/10.2298/JSC0811027D . .