Výsledky vyhledávání - "Wilma E. Lewis"

Levels of Polybrominated Diphenyl Ether (PBDE) flame retardants in animals representing different trophic levels of the North Sea food web

Autor: Bart N. Zegers, Michael R Tjoen-A-Choy, C.R. Allchin, Jacob de Boer, Wilma E. Lewis, Jan P. Boon, Cato C Ten Hallers-Tjabbes, Robin J. Law

Publikováno v: Environmental Science and Technology, 36, 4025-4032
Environmental Science and Technology 36 (2002)

The levels of individual PBDE congeners were investigated in the invertebrate species whelk (Buccinum undatum), seastar (Asterias rubens), and hermit crab (Pagurus bernhardus), the gadoid fish species whiting (Merlangius merlangus) and cod (Gadus mor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06924b95179a5c5c17989f0f59098716
https://doi.org/10.1021/es0158298

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Immunochemical and catalytic characterization of hepatic microsomal cytochrome P450 in the sperm whale (Physeter macrocephalus)

Autor: Anders Goksøyr, Jan P. Boon, Wilma E Lewis

Publikováno v: Aquatic Toxicology. 52:297-309

Liver samples from three live-stranded adult male sperm whales, that could be sampled and frozen in liquid nitrogen within 18 h post mortem, provided an opportunity to learn more about the basic properties of their cytochrome P450 (CYP) system. All s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a588bacd029663edab0a9fe53e8c24a0
https://doi.org/10.1016/s0166-445x(00)00165-x

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Indications for the involvement of a CYP3A-like iso-enzyme in the metabolism of chlorobornane (Toxaphene®) congeners in seals from inhibition studies with liver microsomes

Autor: Jan P. Boon, Anders Goksøyr, Cecile M. van Hezik, Henk-Jan de Geus, Wilma E. Lewis, Robert J. Letcher, P.G. Wester

Publikováno v: Aquatic Toxicology 51 (2001) 3
Aquatic Toxicology, 51(3), 319-333

The different isoforms of the cytochrome P450 (CYP) system can metabolise a suite of classes of lipophilic, anthropogenic compounds. The bioaccumulative potential as well as the toxicity of xenobiotics may be significantly altered in the process. To

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc4a65fd3874ee8a9829f0689e524ea0
https://doi.org/10.1016/s0166-445x(00)00116-8

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Production and fate of dimethylsulfide and dimethylsulfoniopropionate in pelagic mesocosms:the role of sedimentation

Autor: FC van Duyl, Rlj Kwint, H.J. Lindeboom, Wilma E. Lewis, Ronald Osinga, JD Lont, GW Kraay

Publikováno v: Marine Ecology Progress Series. 131:275-286

Elevated concentrations of dlmethylsulf~de (DMS) sometimes occur In sea water dunng phytoplankton blooms. To determine the factors controlling the concentration of DMS in sea water, the development and fate of a bloom dominated by Phaeocystis sp. was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54b4090dc9ca774f04bae58bd9a6525e
https://doi.org/10.3354/meps131275

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Effects of the sea urchinEchinocardium cordatumon oxygen uptake and sulfate reduction in experimental benthic systems under increasing organic loading

Autor: Ronald Osinga, Wilma E. Lewis, Chris Vriezen, Fleur C. van Duyl, Judith L.M. Wopereis

Publikováno v: Ophelia. 41:221-236

The effects of the presence of the sea urchin species Echinocardium cordatum on benthic oxygen uptake rates, oxygen penetration depths and sulfate reduction rates were studied in benthic boxcosms (volume ca. 25 1). Boxcosms were enriched by adding a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58e71af727c70bd0b25a4491559e0f03
https://doi.org/10.1080/00785236.1995.10422045

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Hepatic microsomal cytochrome P450 enzyme activity in relation to in vitro metabolism/inhibition of polychlorinated biphenyls and testosterone in Baltic grey seal (Halichoerus grypus)

Autor: Hongxia, Li, Jan P, Boon, Wilma E, Lewis, Martin, van den Berg, Madeleine, Nyman, Robert J, Letcher

Publikováno v: Environmental toxicology and chemistry. 22(3)

Among other factors, cytochrome P450 (CYP) enzyme activity determines polychlorinated biphenyl (PCB) bioaccumulation, biotransformation, and toxicity in exposed species. We measured the oxidative metabolism in vitro of 12 PCB congeners, representing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::edcf087ede377ea330ca9d69c0f845aa
https://pubmed.ncbi.nlm.nih.gov/12627653

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Levels of Polybrominated Diphenyl Ether Flame Retardants in Sediment Cores from Western Europe

Autor: Jacob de Boer, Wim Boer, Wilma E. Lewis, Rienk H. Smittenberg, Jan P. Boon, Kees Booij, Bart N. Zegers

Publikováno v: Environmental Science and Technology, 37(17), 3803-3807
Environmental Science and Technology 37 (2003) 17

The levels of 14 brominated diphenyl ether (BDE)-congeners in sediment cores from three locations in Western Europe have been determined by GC/MS (negative chemical ionization mode). Sediments from the Drammenfjord (Norway), the western Wadden Sea (T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0043a7ed112c5db75cc9b03c6bd57383
https://research.wur.nl/en/publications/levels-of-polybrominated-diphenyl-ether-flame-retardants-in-sedim

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Biological control of short-term variations in the concentration of DMSP and DMS during a Phaeocystis spring bloom

Autor: Winfried W.C. Gieskes, Wilma E. Lewis, A.J. Kop, Fleur C. van Duyl

Publikováno v: Journal of Sea Research, 40(3-4), 221-231. ELSEVIER SCIENCE BV

In the spring of 1995. short-term variations in the concentration of particulate and dissolved dimethylsulfoniopropionate (DMSP) and dimethylsulfide (DMS) were monitored in the western Wadden Sea, a shallow coastal region in open connection with the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91f939238c430b51d5394a6327f8ec9a
https://research.rug.nl/en/publications/56ed84ef-28b9-4345-a243-d9dec43f133c

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Do flame retardants threaten ocean life?

Autor: Jan P. Boon, Wilma E. Lewis, Jacob de Boer, Hans J. C. Klamer, P.G. Wester

Publikováno v: Nature. 394(6688)

Brominated flame retardants are important in modern life. They are used at relatively high concentrations in electronic equipment such as computers and television sets, in textiles, cars and in many other applications. Here we show that two groups of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b2a22ddaf2439064a03af3a23ee3235
https://pubmed.ncbi.nlm.nih.gov/9665124

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