Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Math E.L. Kohnen"'
Autor:
Jeremy E. P. Dahl, Math E.L. Kohnen, Kenneth E. Peters, J. M. Moldowan, M. A. Rooney, G. E. Claypool, M. R. Mello, G. E. Michael
Publikováno v:
Nature. 399:54-57
Oil cracking—the thermal breakdown of heavy hydrocarbons to smaller ones—takes place within oil-bearing rock formations at depths commonly accessed by commercial oil wells. The process ultimately converts oil into gas and pyrobitumen, and thus li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edfc28665855ab71d65bb646e3413127
https://doi.org/10.1038/19953
https://doi.org/10.1038/19953
Publikováno v:
Geochimica et Cosmochimica Acta. 60:4873-4876
In a North Sea oil, the carotenoid derivatives β-carotene, β-isorenieratane, and isorenieratane were identified, together with a series of aryl isoprenoids with a 2,3,6-trimethyl substitution pattern for the aromatic ring. The δ 13 C values of β-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd6ff1ff0a65c6e89a197b5cf4d5e91e
https://doi.org/10.1016/s0016-7037(96)00303-1
https://doi.org/10.1016/s0016-7037(96)00303-1
Autor:
D. Simmons, D. Brincat, J. Allan, Paul Donohoe, Mingqiang Li, Nils Telnæs, I. Horstad, K. J. Noke, Math E.L. Kohnen, M. Chen, Bernard F.J. Bowler, Steve Larter, B. Bennett
Publikováno v:
Nature. 383:593-597
The ability to determine the distance migrated by an oil from source rock to reservoir could greatly assist in the identification of new, economically viable accumulations of petroleum. Non-alkylated benzocarbazoles, which are present in trace quanti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::deaa0b0f517c82111c524a0137eb4630
https://doi.org/10.1038/383593a0
https://doi.org/10.1038/383593a0
Autor:
Math E.L. Kohnen, David J. Hollander, Adri C. T. van Duin, Jaap S. Sinninghe Damsté, Jan W. de Leeuw
Publikováno v:
Geochimica et Cosmochimica Acta. 59:5141-5157
Diagenetic pathways of bacteriohopanepolyol derivatives are proposed based on the concentrations and 13C contents of homohopanes, homohop-17(21)-enes, benzohopanes, hopanoid thiophenes and sulphides, and macromolecularly S-bound homohopanes present i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ad815bd552a1e529addeb2eab8480a
https://doi.org/10.1016/0016-7037(95)00338-x
https://doi.org/10.1016/0016-7037(95)00338-x
Autor:
Marianne Baas, Jaap S. Sinninghe Damsté, Math E.L. Kohnen, Jan W. de Leeuw, A. C. Kock-Van Dalen, Stefan Schouten
Publikováno v:
Organic Geochemistry. 23:765-775
Polar fractions of three immature sulphur-rich sediments and four sulphur-rich oils, all of Miocene age, were studied using two selective chemolytic methods, namely methyl lithium/methyl iodide, which selectively cleaves polysulphide bonds, and Raney
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18a8533587c9c17ff7c1765cbc4c3edc
https://doi.org/10.1016/0146-6380(95)00055-j
https://doi.org/10.1016/0146-6380(95)00055-j
Publikováno v:
Geochimica et Cosmochimica Acta. 59:1605-1609
1-Decene was subjected to hydrosulphurization under phase-transfer conditions at room temperature. Compound-specific isotope analysis revealed that 1-decene becomes enriched in 13C with increasing yields of sulphurization whilst the sulphur compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::241687289f8c2ce75f5e8188f34e3fa6
https://doi.org/10.1016/0016-7037(95)00066-9
https://doi.org/10.1016/0016-7037(95)00066-9
Publikováno v:
Geochimica et Cosmochimica Acta. 59:521-533
Sediments from Units I and II of the Black Sea were analyzed to assess the early diagenetic formation of organic sulfur compounds (OSC). A series of isomeric C28-2,4-dialkylthiophenes was found at low concentrations in surface sediments. OSC with C25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c9fafaabe664175d780f1e347634052
https://doi.org/10.1016/0016-7037(94)00361-o
https://doi.org/10.1016/0016-7037(94)00361-o
Autor:
A. C. Kock-Van Dalen, Marianne Baas, Math E.L. Kohnen, Jaap S. Sinninghe Damsté, Jan W. de Leeuw
Publikováno v:
Geochimica et Cosmochimica Acta. 57:2515-2528
Sulphur-bound steroid and phytane moieties in macromolecules present in the polar fractions of six immature samples (both crude oils and sediment extracts) have been analyzed using S-selective chemolysis methods and analytical pyrolysis. The identifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11d4ff1d1952c5cfd8c04f6c5d72b9ae
https://doi.org/10.1016/0016-7037(93)90414-r
https://doi.org/10.1016/0016-7037(93)90414-r
Autor:
Jan W. de Leeuw, Jaap S. Sinninghe Damsté, John M. Hayes, Stefan Schouten, Math E.L. Kohnen, Dawn Merrit
Publikováno v:
Organic Geochemistry. 19:403-419
Five immature sediments from a Messinian evaporitic basin, representing one evaporitic cycle, were studied using molecular organic sulphur and isotope geochemistry. It is shown that a specific carbon skeleton which is present in different "modes of o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21a72c7986ec159e13581a3eae9d10f2
https://doi.org/10.1016/0146-6380(92)90008-l
https://doi.org/10.1016/0146-6380(92)90008-l
Autor:
John M. Hayes, Jaap S. Sinninghe Damsté, Dawn A. Merritt, Stefan Schouten, Math E.L. Kohnen, Jan W. de Leeuw
Publikováno v:
Science. 256:358-362
Study of organic matter in immature sediments from a Messinian evaporitic basin shows that consideration of structures, modes of occurrence, and carbon isotopic compositions of free and sulfur-bound carbon skeletons allow identification of biochemica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::274cf6e8a4b7ebf57aa25e7fa8a2990c
https://doi.org/10.1126/science.256.5055.358
https://doi.org/10.1126/science.256.5055.358