Zobrazeno 1 - 10
of 503
pro vyhledávání: '"J. Rullkötter"'
Autor:
F. J. Bragg, I. C. Prentice, S. P. Harrison, G. Eglinton, P. N. Foster, F. Rommerskirchen, J. Rullkötter
Publikováno v:
Biogeosciences, Vol 10, Iss 3, Pp 2001-2010 (2013)
Atmospheric CO2 concentration is hypothesized to influence vegetation distribution via tree–grass competition, with higher CO2 concentrations favouring trees. The stable carbon isotope (δ13C) signature of vegetation is influenced by the relative i
Externí odkaz:
https://doaj.org/article/1c344008e9a146d89ad336f15f354026
Publikováno v:
Biogeosciences, Vol 8, Iss 9, Pp 2547-2560 (2011)
Intact polar lipids (IPLs) are considered biomarkers for living biomass. Their degradation in marine sediments, however, is poorly understood and complicates interpretation of their occurrence in geological samples. To investigate the turnover of IPL
Externí odkaz:
https://doaj.org/article/75aeaaebcf85481cb85fd2a012341d0c
Autor:
M. Beck, T. Riedel, J. Graue, J. Köster, N. Kowalski, C. S. Wu, G. Wegener, Y. Lipsewers, H. Freund, M. E. Böttcher, H.-J. Brumsack, H. Cypionka, J. Rullkötter, B. Engelen
Publikováno v:
Biogeosciences, Vol 8, Iss 1, Pp 55-68 (2011)
To date, North Sea tidal-flat sediments have been intensively studied down to a depth of 5 m below seafloor (mbsf). However, little is known about the biogeochemistry, microbial abundance, and activity of sulfate reducers as well as methanogens in de
Externí odkaz:
https://doaj.org/article/06a6ac00316448f080c0825be84900b7
Publikováno v:
Organic Geochemistry. 12:VII-VIII
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::749938cfd075eaba15d3a2ac20c46f1d
https://doi.org/10.1016/0146-6380(88)90127-1
https://doi.org/10.1016/0146-6380(88)90127-1
Autor:
John Shepherd, W.D. Dover, G. F. Clauss, J. Rullkötter, T. Bakke, R. Clements, W.B. Wilkinson
Publikováno v:
Ocean Engineering. 113:11-17
Most proposals for the construction or decommissioning of large offshore structures will need to address a range of issues including the use of innovative technologies, environmental impact, health and safety risks, regulatory requirements and public
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2587b4239f3b9aa933f9e03a79fba33
https://doi.org/10.1016/j.oceaneng.2015.12.031
https://doi.org/10.1016/j.oceaneng.2015.12.031
Autor:
J Rullkötter, A.O Barakat
Publikováno v:
Journal of Petroleum Science and Engineering. 22:103-119
The origin of organic sulfur compounds (OSC) in Nordlinger Ries sediments (Southern Germany) is determined. A detailed characterization of OSC in the `aromatic hydrocarbon' and `neutral polar' fractions of three of the most sulfur-rich sediments from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dbf8d3fc365db66d404906fcedaf2ff
https://doi.org/10.1016/s0920-4105(98)00060-6
https://doi.org/10.1016/s0920-4105(98)00060-6
Autor:
M. Beck, T. Riedel, J. Graue, J. Köster, N. Kowalski, C. S. Wu, G. Wegener, Y. Lipsewers, H. Freund, M. E. Böttcher, H.-J. Brumsack, H. Cypionka, J. Rullkötter, B. Engelen
To date, North Sea tidal flat sediments have been intensively studied down to a depth of 5 m below sea floor (mbsf). However, little is known about the biogeochemistry, microbial abundance, and activity of sulfate reducers as well of methanogens in d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e39acd1d2ae64028be31a09e8b3779e
https://doi.org/10.5194/bgd-7-5463-2010
https://doi.org/10.5194/bgd-7-5463-2010
Autor:
J. S. Lipp, N. Buchs, J. F. Biddle, A. Boetius, B. A. Cragg, H. Cypionka, B. Engelen, A. Weightman, Brian Horsfield, F. Inagaki, Jens Kallmeyer, K. Knittel, J. Logemann, Kai Mangelsdorf, L. McKay, Y. Morono, R. J. Parkes, J. Rullkötter, A. Schippers, A. P. Teske, G. Webster, S. Sievert, K.-U. Hinrichs
Publikováno v:
24th International Meeting on Organic Geochemistry (IMOG) (Bremen 2009)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::31c455bcd9bb482481cf3b4ee3f0fdf4
https://gfzpublic.gfz-potsdam.de/pubman/item/item_239989
https://gfzpublic.gfz-potsdam.de/pubman/item/item_239989
Publikováno v:
Zeitschrift für Naturforschung C. 46:507-512
Two new triterpenoids, isolated from the frond exudate of the fern Notholaena rigida, have been identified as 3 β, 12 β,25-trihydroxy-(20 R-24 R)-epoxy-dammarane- 12-acetate (1), and 24 R,25-diO-isopropyliden-9(19)-cyclolanostan-3 β-ol (5), based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d21b8fdbea1198a5a01428ca2a835bd2
https://doi.org/10.1515/znc-1991-7-801
https://doi.org/10.1515/znc-1991-7-801