Výsledky vyhledávání - "Angela M. Hansen"

Optical Properties of Water for Prediction of Wastewater Contamination, Human-Associated Bacteria, and Fecal Indicator Bacteria in Surface Water at Three Watershed Scales

Autor: Melinda J. Bootsma, Brian A. Pellerin, Angela M. Hansen, Peter L. Lenaker, Steven R. Corsi, Mark A. Borchardt, Sandra L. McLellan, Susan K. Spencer, Debra K. Dila, Brian A. Bergamaschi, Laura A. De Cicco

Publikováno v: Environmental Science & Technology. 55:13770-13782

Relations between spectral absorbance and fluorescence properties of water and human-associated and fecal indicator bacteria were developed for facilitating field sensor applications to estimate wastewater contamination in waterways. Leaking wastewat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb95b996aea3821755e3bc221a61710c
https://doi.org/10.1021/acs.est.1c02644

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Direct Reduction of 1-Bromo-6-chlorohexane and 1-Chloro-6-iodohexane at Silver Cathodes in Dimethylformamide

Autor: Mohammad S. Mubarak, Caitlyn M. McGuire, John A. Rose, Jonathan A. Karty, Angela M. Hansen, Dennis G. Peters

Publikováno v: Electrochimica Acta. 218:311-317

Cyclic voltammetry and controlled-potential (bulk) electrolyses have been employed to probe the electrochemical reductions of 1-bromo-6-chlorohexane and 1‐chloro-6-iodohexane at silver cathodes in dimethylformamide (DMF) containing 0.050 M tetra-n-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ccadacaf1f4ff1670760ffbfc99f73e6
https://doi.org/10.1016/j.electacta.2016.09.066

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Catalytic reduction of 4,4′-(2,2,2-trichloroethane-1,1-diyl)bis(methoxybenzene) (methoxychlor) with nickel(I) salen electrogenerated at reticulated vitreous carbon cathodes

Autor: Dennis G. Peters, Angela M. Hansen, Jonathan A. Karty, Caitlyn M. McGuire

Publikováno v: Journal of Electroanalytical Chemistry. 772:66-72

Methoxychlor [or 4,4′-(2,2,2-trichloroethane-1,1-diyl)bis(methoxybenzene)], a common environmental pollutant, has been catalytically reduced with nickel(I) salen electrogenerated in situ at carbon cathodes in dimethylformamide (DMF) containing 0.05

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cdb9bc978e8a062ca51bf6a801ae9d5
https://doi.org/10.1016/j.jelechem.2016.03.024

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Optical properties of dissolved organic matter (DOM): Effects of biological and photolytic degradation

Autor: Angela M. Hansen, Brian A. Pellerin, Jacob A. Fleck, Brian A. Bergamaschi, Tamara E.C. Kraus, Bryan D. Downing

Publikováno v: Limnology and Oceanography. 61:1015-1032

Advances in spectroscopic techniques have led to an increase in the use of optical properties (absorbance and fluorescence) to assess dissolved organic matter (DOM) composition and infer sources and processing. However, little information is availabl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14bdba39fd7c9f03eadc7c060ab80636
https://doi.org/10.1002/lno.10270

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Biogeochemical evidence from OGCP Core 2A sediments for environmental changes preceding deposition of Tuff IB and climatic transitions in Upper Bed I of the Olduvai Basin

Autor: Harald Stollhofen, Andrea M. Shilling, Simon C. Brassell, Kathy Schick, Ian G. Stanistreet, Nicholas Toth, Katherine H. Freeman, Angela M. Hansen, Devon E. Colcord, Jackson K. Njau, Jonathan A. Karty

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology. 555:109824

Sediment cores recovered by the Olduvai Gorge Coring Project (OGCP) in 2014 afford the opportunity to examine the coupling of biogeochemical evidence for climatic and environmental change within the context of hominin evolution at this renowned East

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::407b06e1ffc28fca2df3153874e08649
https://doi.org/10.1016/j.palaeo.2020.109824

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Wetlands receiving water treated with coagulants improve water quality by removing dissolved organic carbon and disinfection byproduct precursors

Autor: Angela M. Hansen, Sandra M. Bachand, Tamara E.C. Kraus, Philip A.M. Bachand, William R. Horwath

Publikováno v: The Science of the total environment.

Constructed wetlands are used worldwide to improve water quality while also providing critical wetland habitat. However, wetlands have the potential to negatively impact drinking water quality by exporting dissolved organic carbon (DOC) that upon dis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98b96e16d63346ecb29cdf68f0e1e65d
https://pubmed.ncbi.nlm.nih.gov/29223084

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Biogeochemical evidence for environmental changes of Pleistocene Lake Olduvai during the transitional sequence of OGCP core 2A that encompasses Tuff IB (~1.848 Ma)

Autor: Katherine H. Freeman, Harald Stollhofen, Angela M. Hansen, Andrea M. Shilling, Ian G. Stanistreet, Simon C. Brassell, Devon E. Colcord, Kathy Schick, Jonathan A. Karty, Jackson K. Njau, Nicholas Toth

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology. 532:109267

Olduvai Gorge is renowned for discoveries of hominin fossils and tools in a well-resolved sedimentary context, representing one of the foremost sites in East Africa that has afforded critical evidence of hominin evolution. In 2014, the Olduvai Gorge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::afbf34e459b27bf65079471895c3edd3
https://doi.org/10.1016/j.palaeo.2019.109267

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