Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Christopher D. Knightes"'
Publikováno v:
Environ Toxicol Chem
Methylmercury (MeHg) is a highly toxic form of mercury that can bioaccumulate in fish tissue. Methylmercury is produced by anaerobic bacteria, many of which are also capable of MeHg degradation. In addition, demethylation in surface waters can occur
Autor:
Jake J Beaulieu, Heather E Golden, Christopher D Knightes, Paul M Mayer, Sujay S Kaushal, Michael J Pennino, Clay P Arango, David A Balz, Colleen M Elonen, Ken M Fritz, Brian H Hill
Publikováno v:
PLoS ONE, Vol 10, Iss 7, p e0132256 (2015)
Nitrogen (N) uptake in streams is an important ecosystem service that reduces nutrient loading to downstream ecosystems. Here we synthesize studies that investigated the effects of urban stream burial on N-uptake in two metropolitan areas and use sim
Externí odkaz:
https://doaj.org/article/1402b7e81dd6490396666425d81bf8e1
Autor:
Richard G. Zepp, Dermont Bouchard, Christopher D. Knightes, Robert B. Ambrose, Brad Acrey, Tim A. Wool, Brian Avant, Yanlai Han
Publikováno v:
Environmental Modelling & Software. 111:444-458
Toxicant concentrations in surface waters are of environmental concern due to their potential impacts to humans and wildlife. Numerical models provide system insight, support management decisions, and provide scenario testing on the impacts of toxica
Autor:
Muluken E. Muche, Christopher D. Knightes, Deron Smith, S. Thomas Purucker, Kurt Wolfe, Sumathy Sinnathamby, John M. Johnston, Rajbir Parmar, Michael Cyterski
Publikováno v:
Journal of the American Water Resources Association
Gridded precipitation datasets are becoming a convenient substitute for gauge measurements in hydrological modeling; however, these data have not been fully evaluated across a range of conditions. We compared four gridded datasets (Daily Surface Weat
Autor:
Brad Acrey, Xiaojun Chang, Dermont Bouchard, Brian Avant, Richard G. Zepp, Yanlai Han, Christopher D. Knightes, Hsin-Se Hsieh, Jessica C. Spear
Publikováno v:
NanoImpact. 13
The industrial use and widespread application of carbon-based nanomaterials have caused a rapid increase in their production over the last decades. However, toxicity of these materials is not fully known and is still being investigated for potential
Autor:
Xiaojun Chang, Christopher D. Knightes, Hsin-Se Hsieh, W. Matthew Henderson, Richard G. Zepp, Brad Acrey, Yanlai Han, Brian Avant, Jessica C. Spear, Dermont Bouchard
The production of graphene-family nanomaterials (GFNs) has increased appreciably in recent years. Graphene oxide (GO) has been found to be the most toxic nanomaterial among GFNs and, to our knowledge, no studies have been conducted to model its fate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6391a700e75d21e7f200de5af026b5fa
https://europepmc.org/articles/PMC6621605/
https://europepmc.org/articles/PMC6621605/
Autor:
Rajbir Parmar, Sumathy Sinnathamby, Christopher D. Knightes, Kurt Wolfe, Joshua Koblich, Jan Sitterson
Publikováno v:
Environmental modelling & software : with environment data news
Input data acquisition and preprocessing is time-consuming and difficult to handle and can have major implications on environmental modeling results. US EPA’s Hydrological Micro Services Precipitation Comparison and Analysis Tool (HMS-PCAT) provide
Publikováno v:
Journal of Hydrology: Regional Studies, Vol 18, Iss, Pp 68-79 (2018)
Study region: The SWAT model was used to estimate the combined effects of changing land cover, climate and Clean Air Act (CAAA)-related atmospheric nitrogen (N) deposition to watershed nitrogen fate and transport for two watersheds in North Carolina,
Publikováno v:
Hydrological Processes. 30:1403-1418
We investigated how projected changes in land cover and climate affected simulated nitrate (NO3−) and organic nitrogen discharge for two watersheds within the Neuse River Basin, North Carolina, USA, for years 2010–2070. We applied the Soil and Wa
Publikováno v:
Environmental sciencetechnology. 51(19)
Under the Toxic Substances Control Act (TSCA), the Environmental Protection Agency (EPA) is required to perform new chemical reviews of nanomaterials identified in pre-manufacture notices. However, environmental fate models developed for traditional