Cvetković, Olga

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  • Cvetković, Olga (4)
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Author's Bibliography

Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from Organometallic Solution Precursor

Dimitrijevic, R.; Cvetković, Olga; Miodragović, Zoran; Simić, Miloš ; Manojlović, Dragan D.; Jovic, V.

(Technical Faculty, Bor-Serbia, Bor, 2013)

TY  - JOUR
AU  - Dimitrijevic, R.
AU  - Cvetković, Olga
AU  - Miodragović, Zoran
AU  - Simić, Miloš

AU  - Manojlović, Dragan D.
AU  - Jovic, V.
PY  - 2013
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1460
AB  - The Ag nano-structured thin films prepared on flat glass substrates have been studied. The ball-like silver nanoparticles have been synthesized in large quantity by using a modified method of hydrolytic decomposition of silver complexes with amino types ligands formed in ethanol aqueous solution. SEM analysis revealed that Ag nanoparticles are all sphere shaped with bimodal size (40 and 70 nm) distribution. The results of XRD powder pattern examination show that Ag nanoparticles are pure phase, well crystallized. The unit cell dimensions measured on synthesized Ag nano films show small but frequent contraction in comparison to Ag metal standard.
PB  - Technical Faculty, Bor-Serbia, Bor
T2  - Journal of mining and metallurgy, Section B: Metallurgy
T1  - Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from  Organometallic Solution Precursor
VL  - 49
IS  - 1
SP  - 91
EP  - 95
DO  - 10.2298/JMMB120111041D
ER  - 
@article{
author = "Dimitrijevic, R. and Cvetković, Olga and Miodragović, Zoran and Simić, Miloš
 and Manojlović, Dragan D. and Jovic, V.",
year = "2013",
abstract = "The Ag nano-structured thin films prepared on flat glass substrates have been studied. The ball-like silver nanoparticles have been synthesized in large quantity by using a modified method of hydrolytic decomposition of silver complexes with amino types ligands formed in ethanol aqueous solution. SEM analysis revealed that Ag nanoparticles are all sphere shaped with bimodal size (40 and 70 nm) distribution. The results of XRD powder pattern examination show that Ag nanoparticles are pure phase, well crystallized. The unit cell dimensions measured on synthesized Ag nano films show small but frequent contraction in comparison to Ag metal standard.",
publisher = "Technical Faculty, Bor-Serbia, Bor",
journal = "Journal of mining and metallurgy, Section B: Metallurgy",
title = "Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from  Organometallic Solution Precursor",
volume = "49",
number = "1",
pages = "91-95",
doi = "10.2298/JMMB120111041D"
}
Dimitrijevic, R., Cvetković, O., Miodragović, Z., Simić, M., Manojlović, D. D.,& Jovic, V.. (2013). Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from  Organometallic Solution Precursor. in Journal of mining and metallurgy, Section B: Metallurgy
Technical Faculty, Bor-Serbia, Bor., 49(1), 91-95.
https://doi.org/10.2298/JMMB120111041D
Dimitrijevic R, Cvetković O, Miodragović Z, Simić M, Manojlović DD, Jovic V. Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from  Organometallic Solution Precursor. in Journal of mining and metallurgy, Section B: Metallurgy. 2013;49(1):91-95.
doi:10.2298/JMMB120111041D .
Dimitrijevic, R., Cvetković, Olga, Miodragović, Zoran, Simić, Miloš
, Manojlović, Dragan D., Jovic, V., "Sem/Edx and Xrd Characterization of Silver Nanocrystalline Thin Film Prepared from  Organometallic Solution Precursor" in Journal of mining and metallurgy, Section B: Metallurgy, 49, no. 1 (2013):91-95,
https://doi.org/10.2298/JMMB120111041D . .
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Natural bitumens versus oil pollution in the Vlasina lake peat

Durka, D.; Pfendt, Petar A.; Jovančićević, Branimir; Cvetković, Olga; Wehner, H.

(Springer Heidelberg, Heidelberg, 2005)

TY  - JOUR
AU  - Durka, D.
AU  - Pfendt, Petar A.
AU  - Jovančićević, Branimir
AU  - Cvetković, Olga
AU  - Wehner, H.
PY  - 2005
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/788
AB  - Free and associated bitumens were isolated by sequential extraction from Vlasina lake peat (SE Serbia) and were investigated in order to differentiate between oil pollution and natural bitumens. Four peat samples were collected at different depths, on a peat island. Gas chromatographic (GC) and gas chromatography/mass spectrometry (GC/MS) analysis revealed the presence of three markedly different bitumen fractions. Here we show that the free bitumens are representing the native peat bitumens. The two associated bitumens are mainly the products of bacterial rework of organic substance, which were then trapped by two differing mechanisms. The bitumens characteristics and association features exclude a contribution of oil pollution.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Chemistry Letters
T1  - Natural bitumens versus oil pollution in the Vlasina lake peat
VL  - 3
IS  - 1
SP  - 39
EP  - 42
DO  - 10.1007/s10311-005-0110-2
ER  - 
@article{
author = "Durka, D. and Pfendt, Petar A. and Jovančićević, Branimir and Cvetković, Olga and Wehner, H.",
year = "2005",
abstract = "Free and associated bitumens were isolated by sequential extraction from Vlasina lake peat (SE Serbia) and were investigated in order to differentiate between oil pollution and natural bitumens. Four peat samples were collected at different depths, on a peat island. Gas chromatographic (GC) and gas chromatography/mass spectrometry (GC/MS) analysis revealed the presence of three markedly different bitumen fractions. Here we show that the free bitumens are representing the native peat bitumens. The two associated bitumens are mainly the products of bacterial rework of organic substance, which were then trapped by two differing mechanisms. The bitumens characteristics and association features exclude a contribution of oil pollution.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Chemistry Letters",
title = "Natural bitumens versus oil pollution in the Vlasina lake peat",
volume = "3",
number = "1",
pages = "39-42",
doi = "10.1007/s10311-005-0110-2"
}
Durka, D., Pfendt, P. A., Jovančićević, B., Cvetković, O.,& Wehner, H.. (2005). Natural bitumens versus oil pollution in the Vlasina lake peat. in Environmental Chemistry Letters
Springer Heidelberg, Heidelberg., 3(1), 39-42.
https://doi.org/10.1007/s10311-005-0110-2
Durka D, Pfendt PA, Jovančićević B, Cvetković O, Wehner H. Natural bitumens versus oil pollution in the Vlasina lake peat. in Environmental Chemistry Letters. 2005;3(1):39-42.
doi:10.1007/s10311-005-0110-2 .
Durka, D., Pfendt, Petar A., Jovančićević, Branimir, Cvetković, Olga, Wehner, H., "Natural bitumens versus oil pollution in the Vlasina lake peat" in Environmental Chemistry Letters, 3, no. 1 (2005):39-42,
https://doi.org/10.1007/s10311-005-0110-2 . .
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Interpretation of Serbian surface sediments' maturation parameters based on factor analysis

Sainovic, A; Stojanović, Ksenija A.; Filopovic, I; Cvetković, Olga; Jovančićević, Branimir; Vitorović, Dragomir K.

(Serbian Chemical Soc, Belgrade, 2004)

TY  - JOUR
AU  - Sainovic, A
AU  - Stojanović, Ksenija A.
AU  - Filopovic, I
AU  - Cvetković, Olga
AU  - Jovančićević, Branimir
AU  - Vitorović, Dragomir K.
PY  - 2004
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/665
AB  - The factor analysis, used in this work for the interpretation of maturation parameters observed in an exploration study of a group of surface sediments of diverse age originating from different localities in Serbia, resulted in two significant factors. Factor 1 involved parameters related mainly to maturation changes within the aliphatic chains of the organic matter and factor 2 involved parameters based mainly on changes in the terpane and sterane rings. A statistically significant inversely proportional linear dependence between factors 1 and 2 was observed with older, in contrast to younger sediments, suggesting that the reactions of the aliphatic chains in the older sediments did not occur simultaneously with the reactions in the rings and, also, that the older surface sediments examined in this study may be characterized by a degree of thermal maturity corresponding to changes in the biomarker sterane and terpane rings, while the younger sediments by intensive changes in the aliphatic chains.
AB  - U ovom radu faktorska analiza je primenjena za interpretaciju osam maturacionih parametara izračunatih u okviru eksploracionog istraživanja trinaest uzoraka površinskih sedimenata različite starosti, uzetih sa različitih lokaliteta u Srbiji. Analizom su utvrđena dva značajna faktora. Faktor 1 je obuhvatio parametre zasnovane pretežno na maturacionim promenama alifatičnih nizova, a faktor 2 parametre zasnovane uglavnom na promenama u terpanskim i steranskim prstenovima. Statistički značajna, obrnuto proporcionalna, linearna zavisnost između faktora 1 i 2 utvrđena je kod starijih, za razliku od mlađih sedimenata.Na osnovu toga pretpostavljeno je da se kod starih sedimenata reakcije u alifatičnom nizu i prstenu nisu odigravale istovremeno, i takođe, da se stariji sedimenti ispitivani u ovom radu mogu okarakterisati stepenom termičke zrelosti koji odgovara promenama u biomarkerskim steranskim i terpanskim prstenovima, a mlađi intenzivnim promenama u alifatičnim nizovima.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Interpretation of Serbian surface sediments' maturation parameters based on factor analysis
T1  - Primena faktorske analize u interpretaciji maturacionih parametara površinskih sedimenata Srbije
VL  - 69
IS  - 8-9
SP  - 611
EP  - 624
DO  - 10.2298/JSC0409611S
ER  - 
@article{
author = "Sainovic, A and Stojanović, Ksenija A. and Filopovic, I and Cvetković, Olga and Jovančićević, Branimir and Vitorović, Dragomir K.",
year = "2004",
abstract = "The factor analysis, used in this work for the interpretation of maturation parameters observed in an exploration study of a group of surface sediments of diverse age originating from different localities in Serbia, resulted in two significant factors. Factor 1 involved parameters related mainly to maturation changes within the aliphatic chains of the organic matter and factor 2 involved parameters based mainly on changes in the terpane and sterane rings. A statistically significant inversely proportional linear dependence between factors 1 and 2 was observed with older, in contrast to younger sediments, suggesting that the reactions of the aliphatic chains in the older sediments did not occur simultaneously with the reactions in the rings and, also, that the older surface sediments examined in this study may be characterized by a degree of thermal maturity corresponding to changes in the biomarker sterane and terpane rings, while the younger sediments by intensive changes in the aliphatic chains., U ovom radu faktorska analiza je primenjena za interpretaciju osam maturacionih parametara izračunatih u okviru eksploracionog istraživanja trinaest uzoraka površinskih sedimenata različite starosti, uzetih sa različitih lokaliteta u Srbiji. Analizom su utvrđena dva značajna faktora. Faktor 1 je obuhvatio parametre zasnovane pretežno na maturacionim promenama alifatičnih nizova, a faktor 2 parametre zasnovane uglavnom na promenama u terpanskim i steranskim prstenovima. Statistički značajna, obrnuto proporcionalna, linearna zavisnost između faktora 1 i 2 utvrđena je kod starijih, za razliku od mlađih sedimenata.Na osnovu toga pretpostavljeno je da se kod starih sedimenata reakcije u alifatičnom nizu i prstenu nisu odigravale istovremeno, i takođe, da se stariji sedimenti ispitivani u ovom radu mogu okarakterisati stepenom termičke zrelosti koji odgovara promenama u biomarkerskim steranskim i terpanskim prstenovima, a mlađi intenzivnim promenama u alifatičnim nizovima.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Interpretation of Serbian surface sediments' maturation parameters based on factor analysis, Primena faktorske analize u interpretaciji maturacionih parametara površinskih sedimenata Srbije",
volume = "69",
number = "8-9",
pages = "611-624",
doi = "10.2298/JSC0409611S"
}
Sainovic, A., Stojanović, K. A., Filopovic, I., Cvetković, O., Jovančićević, B.,& Vitorović, D. K.. (2004). Interpretation of Serbian surface sediments' maturation parameters based on factor analysis. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 69(8-9), 611-624.
https://doi.org/10.2298/JSC0409611S
Sainovic A, Stojanović KA, Filopovic I, Cvetković O, Jovančićević B, Vitorović DK. Interpretation of Serbian surface sediments' maturation parameters based on factor analysis. in Journal of the Serbian Chemical Society. 2004;69(8-9):611-624.
doi:10.2298/JSC0409611S .
Sainovic, A, Stojanović, Ksenija A., Filopovic, I, Cvetković, Olga, Jovančićević, Branimir, Vitorović, Dragomir K., "Interpretation of Serbian surface sediments' maturation parameters based on factor analysis" in Journal of the Serbian Chemical Society, 69, no. 8-9 (2004):611-624,
https://doi.org/10.2298/JSC0409611S . .
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Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia)

Jovančićević, Branimir; Wehner, H.; Scheeder, G; Stojanović, Ksenija A.; Sainovic, A; Cvetković, Olga; Ercegovac, M; Vitorović, Dragomir K.

(Serbian Chemical Soc, Belgrade, 2002)

TY  - JOUR
AU  - Jovančićević, Branimir
AU  - Wehner, H.
AU  - Scheeder, G
AU  - Stojanović, Ksenija A.
AU  - Sainovic, A
AU  - Cvetković, Olga
AU  - Ercegovac, M
AU  - Vitorović, Dragomir K.
PY  - 2002
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/507
AB  - In a search for source rocks of the crude oils of the Drmno depression (Southern part of the Pannonian Basin, Serbia), based on bulk and specific organic geochemical parameters, six out of eight Sirakovo, Bubusinac and Bradarac sedimentary core samples were found to possess typical source rock characteristics. By comparing the results observed for these sedimentary samples with the corresponding propel-ties of the crude oils from the Sirakovo and Bradarac oil-gas fields, a positive organic geochemical oil-source rock correlation was experienced for the first time within this basin. This finding may be considered as an important step towards the ultimate organic geochemical/geological interpretation of the Drmno depression.
AB  - Ispitivani su sedimenti iz bušotina koje pripadaju lokacijama Sirakovo Bubušinac i Bradarac (depresija Drmno). Primenjene su organsko-geohemijske metode (određivanje sadržaja organskog ugljenika, bitumena i ugljovodonika, kao i određivanje raspodele i obilnosti bioloških markera tipa n-alkana izoprenoidnih alifatičnih alkana, triterpana i sterana) sa ciljem da se proceni njihova naftna potencijalnost. Za šest uzoraka utvrđen je visok stepen maturisanosti organske supstance, pripadnost "oil generation" fazi (Rr = 0,70 – 0,80 %), tercijarna starost i pretežno terestrijalno poreklo. Poređenjem sa sirovim naftama iz već otkrivenih naftnih ležišta bliskog lokaliteta (Sirakovo i Bradarac) utvrđena je značajna sličnost i prema maturisanosti i prema poreklu, na osnovu čega je između ispitivanih uzoraka sedimenata i nafti, prvi put kada je u pitanju depresija Drmno, definisana pozitivna korelacija nafta-izvorna stena.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia)
T1  - Traganje za izvornim stenama nafti depresije Drmno, južni deo Panonskog basena, Srbija
VL  - 67
IS  - 8-9
SP  - 553
EP  - 566
DO  - 10.2298/JSC0209553J
ER  - 
@article{
author = "Jovančićević, Branimir and Wehner, H. and Scheeder, G and Stojanović, Ksenija A. and Sainovic, A and Cvetković, Olga and Ercegovac, M and Vitorović, Dragomir K.",
year = "2002",
abstract = "In a search for source rocks of the crude oils of the Drmno depression (Southern part of the Pannonian Basin, Serbia), based on bulk and specific organic geochemical parameters, six out of eight Sirakovo, Bubusinac and Bradarac sedimentary core samples were found to possess typical source rock characteristics. By comparing the results observed for these sedimentary samples with the corresponding propel-ties of the crude oils from the Sirakovo and Bradarac oil-gas fields, a positive organic geochemical oil-source rock correlation was experienced for the first time within this basin. This finding may be considered as an important step towards the ultimate organic geochemical/geological interpretation of the Drmno depression., Ispitivani su sedimenti iz bušotina koje pripadaju lokacijama Sirakovo Bubušinac i Bradarac (depresija Drmno). Primenjene su organsko-geohemijske metode (određivanje sadržaja organskog ugljenika, bitumena i ugljovodonika, kao i određivanje raspodele i obilnosti bioloških markera tipa n-alkana izoprenoidnih alifatičnih alkana, triterpana i sterana) sa ciljem da se proceni njihova naftna potencijalnost. Za šest uzoraka utvrđen je visok stepen maturisanosti organske supstance, pripadnost "oil generation" fazi (Rr = 0,70 – 0,80 %), tercijarna starost i pretežno terestrijalno poreklo. Poređenjem sa sirovim naftama iz već otkrivenih naftnih ležišta bliskog lokaliteta (Sirakovo i Bradarac) utvrđena je značajna sličnost i prema maturisanosti i prema poreklu, na osnovu čega je između ispitivanih uzoraka sedimenata i nafti, prvi put kada je u pitanju depresija Drmno, definisana pozitivna korelacija nafta-izvorna stena.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia), Traganje za izvornim stenama nafti depresije Drmno, južni deo Panonskog basena, Srbija",
volume = "67",
number = "8-9",
pages = "553-566",
doi = "10.2298/JSC0209553J"
}
Jovančićević, B., Wehner, H., Scheeder, G., Stojanović, K. A., Sainovic, A., Cvetković, O., Ercegovac, M.,& Vitorović, D. K.. (2002). Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia). in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 67(8-9), 553-566.
https://doi.org/10.2298/JSC0209553J
Jovančićević B, Wehner H, Scheeder G, Stojanović KA, Sainovic A, Cvetković O, Ercegovac M, Vitorović DK. Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia). in Journal of the Serbian Chemical Society. 2002;67(8-9):553-566.
doi:10.2298/JSC0209553J .
Jovančićević, Branimir, Wehner, H., Scheeder, G, Stojanović, Ksenija A., Sainovic, A, Cvetković, Olga, Ercegovac, M, Vitorović, Dragomir K., "Search for source rocks of the crude oils of the Drmno depression (southern part of the Pannonian Basin, Serbia)" in Journal of the Serbian Chemical Society, 67, no. 8-9 (2002):553-566,
https://doi.org/10.2298/JSC0209553J . .
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