Výsledky vyhledávání - "S Vera Cirin-Novta"

Structural and physiological properties of natural petroleum acids from middle oil fractions of 'Kelebija' oil

Autor: M Ljubica Grbovic, A Petar Rodic, E Slavko Kevresan, S Vera Cirin-Novta, N Ksenija Kuhajda, E Julijan Kandrac

Publikováno v: Acta Periodica Technologica, Vol 2004, Iss 35, Pp 87-94 (2004)

The investigated petroleum acids have been isolated from middle oil fractions (b.p. 270-380?C) of Vojvodina crude oil "Kelebija." Group-structural analysis was performed with low resolution mass spectrometry using Field Ionization and Chemical Ioniza

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0579fcfecef9b3b4b647fbae32d5fec9
https://doi.org/10.2298/apt0435087c

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Unexpected cycloreversion of a tosylated sugar oxetane under E2 conditions: The facile formation of 2-(2-furanyl)-1, 3-dioxolane from a novel 2, 5:4, 6-dianhydro-L-idose derivative (Preliminary commun

Autor: Mirjana Popsavin, J Velimir Popsavin, S Vera Cirin-Novta, M Ljubica Radic

Publikováno v: Journal of the Serbian Chemical Society, Vol 69, Iss 2, Pp 117-122 (2004)

2,5:4,6-Dianhydro-3-O-p-toluenesulfonyl-L-idose ethylene acetal (4) was synthesized with the aim of studying its chemical behaviour in the presence of several basic agents (Bu4NF/MeCN, NaOMe/MeOH, KOBut/ButOH/THF, and NaH/DMSO). Treatment of 4 with s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08af540d55e321cf0d8dda46663c65ed
https://doi.org/10.2298/jsc0402117p

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Optimization of petroleum acid isolation from lower oil fractions of Vojvodina 'Velebit' oil

Autor: A Petar Rodic, E Julijan Kandrac, E Slavko Kevresan, M Ljubica Radic, N Ksenija Kuhajda, S Vera Cirin-Novta

Publikováno v: Acta Periodica Technologica, Vol 2003, Iss 34, Pp 49-54 (2003)

Petroleum acids can be obtained from oil and oil derivatives by alkaline extraction. The aim of this work was to optimize the process of alkaline extraction of petroleum acids from light commercial oil fractions of Vojvodina "Velebit" oil by changing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d7aaa4ed77a8e104aedb07e393ebad8
https://doi.org/10.2298/apt0334049c

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Effect of naphthenic acids on formation of adventitious roots in sunflower cuttings

Autor: E Julijan Kandrac, S Vera Cirin-Novta, M Dragana Vasic, M Novica Petrovic, E Slavko Kevresan, M Ljubica Radic, N Ksenija Kuhajda

Publikováno v: Helia

SUMMARY The paper describes a study of the effect of salts of natural naphthenic acids on the rooting of young sunflower cuttings and latteral branching of interspecies sunflower hybrids. Naphthenic acids were obtained by alkaline extraction from atm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8c1a5b1c880eac318e196757a777507
https://doi.org/10.2298/hel0339075k

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Biological activity and structure of natural petroleum acids from Lower oil fractions of 'Velebit' oil

Autor: M Ljubica Radic, N Ksenija Kuhajda, S Vera Cirin-Novta, E Slavko Kevresan, E Julijan Kandrac

Publikováno v: Acta Periodica Technologica, Vol 2002, Iss 33, Pp 135-142 (2002)

Natural petroleum acids of naphthenic type such as carboxylic acids from petroleum basins of Vojvodina are interesting because of diverse possibilities for their use, most importantly for their biological activity and the potential use as plant growt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29cb196b76455cd742a6033d0feafc39
http://www.doiserbia.nb.rs/img/doi/1450-7188/2002/1450-71880233135C.pdf

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