Zobrazeno 1 - 10
of 43
pro vyhledávání: '"James B. Guckert"'
Autor:
Y. Kumagai, Robert J. Larson, Wen Tso Liu, E. Namkung, T. Nishihara, James B. Guckert, Larry J. Forney
Publikováno v:
Ecotoxicology and Environmental Safety. 49:40-53
Various methods used to assess the biodegradability of chemicals often employ activated sludge as an inoculum since chemicals that ultimately enter the environment are often discharged through wastewater. Differences in the structure and function of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8547858d87b068661bb83e12382a8847
https://doi.org/10.1006/eesa.2001.2034
https://doi.org/10.1006/eesa.2001.2034
Publikováno v:
Chemosphere. 35:1143-1160
The effects of seasonally decreasing river water temperature on surfactant biodegradation and algal sensitivity are reviewed from four stream mesocosm studies conducted over a 5-year period. Seasonal temperatures ranged from 28 to 0 degree C over all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8af02870b58a78853f7e5718833d05d
https://doi.org/10.1016/s0045-6535(97)00169-0
https://doi.org/10.1016/s0045-6535(97)00169-0
Autor:
Burt G. Hamm, James B. Guckert, D.H. Davidson, T. D. Johnson, Gregory J. Carr, Yoshiharu Kumagai
Publikováno v:
Journal of Microbiological Methods. 27:183-197
Biolog MicroPlates are 96-well plates that contain pre-dried carbon sources and a tetrazolium violet redox dye that turns purple if added microorganisms utilize the nutrients. We have measured absorbance changes due to tetrazolium dye response for mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fd8f4b26f735d04099b602ad1be44a3
https://doi.org/10.1016/s0167-7012(96)00948-7
https://doi.org/10.1016/s0167-7012(96)00948-7
Publikováno v:
Hydrobiologia. 328:135-146
Periphyton communities are an ecologically important source of information when conducting experimental stream ecotoxicological studies. Experimental stream studies often utilize unreplicated systems in order to understand dose-response phenomena. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac4bc73ce0706b3f28c59a05a56f1040
https://doi.org/10.1007/bf00018710
https://doi.org/10.1007/bf00018710
Publikováno v:
Environmental Toxicology and Chemistry. 15:262-269
Environmental chemistry is a vital part of ecotoxicology studies conducted in mesocosms. Quantification of exposure can be particularly challenging for biodegradable surfactants in once-through stream mesocosms like the Procter & Gamble Experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c5c9ad87dd0f30b2224bf93dd60c58c
https://doi.org/10.1002/etc.5620150306
https://doi.org/10.1002/etc.5620150306
Publikováno v:
Limnology and Oceanography. 40:67-81
Multiple indicators (Chl a, C : N ratios, [6L3C]POC, and two classes of lipid biomarker compounds- sterols and phospholipid ester-linked fatty acids) were used to evaluate spatial and temporal variations in the origin of particulate organic matter (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc93bcd8bda38eb327d224a81d4669ba
https://doi.org/10.4319/lo.1995.40.1.0067
https://doi.org/10.4319/lo.1995.40.1.0067
Autor:
James B. Guckert, Walter R. Hill, David C. White, Stephen C. Nold, Guillermo E. Napolitano, Arthur J. Stewart
Publikováno v:
Journal of the North American Benthological Society. 13:237-249
A manipulative experiment was conducted to evaluate a biochemical method for using periphyton in water quality assessment. Periphyton assemblages that developed in situ on ceramic tiles placed in a reference site in one stream were transferred into a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::477e361bc9ac1ed077fe3455ab16af48
https://doi.org/10.2307/1467242
https://doi.org/10.2307/1467242
Autor:
Kevin R. Carman, James B. Guckert
Publikováno v:
Journal of the North American Benthological Society. 13:80-88
We examined the use of radiotracers to determine if 3 H-amino acids (AA) and 14 C-bicarbonate could differentiate grazing by Physella virgata, a pulmonate gastropod, on the bacterial and algal components in periphyton. Large amounts of 3 H-AA became
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71317410f1a642c533cd75faf1a36ebc
https://doi.org/10.2307/1467268
https://doi.org/10.2307/1467268
Publikováno v:
Science of The Total Environment. 134:1011-1023
Assessment of single-species bioassays of aquatic toxicity is a standard approach to predict the potential for effects of a test chemical in the environment. To reach a prediction, however, the assessment process takes into consideration both the res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::227c091fb3d281e76afdb4d84d638b99
https://doi.org/10.1016/s0048-9697(05)80107-x
https://doi.org/10.1016/s0048-9697(05)80107-x
Autor:
R. F. Jack, Arpad A. Vass, James Q. Chambers, David C. White, James B. Guckert, David E. Nivens
Publikováno v:
Journal of Microbiological Methods. 16:47-58
Microbial biofilms increase the complexity and spatial variation of the interfacial chemistry occurring at metal surfaces and can facilitate corrosion. A multi-electrode probe was designed to replicate interfacial chemistry by providing multiple inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::392b75053d6df83a133154b13a94f3ab
https://doi.org/10.1016/0167-7012(92)90024-x
https://doi.org/10.1016/0167-7012(92)90024-x