Zobrazeno 1 - 10
of 32
pro vyhledávání: '"James D. Begg"'
Publikováno v:
npj Climate and Atmospheric Science, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract Heatwaves are one of the leading causes of climate-induced mortality. Using the examples of recent heatwaves in Europe, the United States and Asia, we illustrate how the communication of dangerous conditions based on temperature maps alone c
Externí odkaz:
https://doaj.org/article/7721befdb9fe4ca3ab5e3793f0d2d185
Autor:
Enrica Balboni, Nancy Merino, James D. Begg, Kyle M. Samperton, Frances E. Zengotita, Gareth T.W. Law, Annie B. Kersting, Mavrik Zavarin
Publikováno v:
Chemosphere. 308(Pt 1)
Since 1952, liquid radioactive effluent containing
Autor:
James D. Begg, Enrica Balboni, Mavrik Zavarin, Yongqin Jiao, Annie B. Kersting, Keith D. Morrison, Harris E. Mason
Publikováno v:
Environmental Science & Technology. 55:1626-1636
Uranium contamination of soils and groundwater in the United States represents a significant health risk and will require multiple remediation approaches. Microbial phosphatase activity coupled to the addition of an organic P source has recently been
Autor:
Keith D, Morrison, Mavrik, Zavarin, Annie B, Kersting, James D, Begg, Harris E, Mason, Enrica, Balboni, Yongqin, Jiao
Publikováno v:
Environmental sciencetechnology. 55(3)
Uranium contamination of soils and groundwater in the United States represents a significant health risk and will require multiple remediation approaches. Microbial phosphatase activity coupled to the addition of an organic P source has recently been
Publikováno v:
Applied Geochemistry. 96:131-137
Pu(V) adsorbed to the surface of montmorillonite clay can be reduced to Pu(IV). In this work, the role of clay structural Fe on this surface mediated reduction reaction was investigated by quantifying Pu(V)/(VI) sorption rates under atmospheric (oxic
Publikováno v:
Geochimica et Cosmochimica Acta. 197:278-293
Desorption of plutonium (Pu) will likely control the extent to which it is transported by mineral colloids. We evaluated the adsorption/desorption behavior of Pu on SWy-1 montmorillonite colloids at pH 4, pH 6, and pH 8 using batch adsorption and flo
Publikováno v:
Nature Geoscience. 13:524-525
Autor:
Mavrik Zavarin, Claudia Joseph, Zu Rong Dai, Mark A. Boggs, Annie B. Kersting, James D. Begg, Pihong Zhao
Publikováno v:
Environmental sciencetechnology. 53(13)
Approximately 2.8 t of plutonium (Pu) has been deposited in the Nevada National Security Site (NNSS) subsurface as a result of underground nuclear testing. Most of this Pu is sequestered in nuclear melt glass. However, Pu migration has been observed
Autor:
Pihong Zhao, Mavrik Zavarin, Ross W. Williams, Ruth Kips, James D. Begg, Scott J. Tumey, Annie B. Kersting, Zurong R. Dai
Publikováno v:
Environmental Science & Technology. 50:6948-6956
Pu(IV) and Pu(V) sorption to goethite was investigated over a concentration range of 10(-15)-10(-5) M at pH 8. Experiments with initial Pu concentrations of 10(-15) - 10(-8) M produced linear Pu sorption isotherms, demonstrating that Pu sorption to g
Publikováno v:
Radiochimica Acta. 103:695-705
It has been suggested that strongly sorbing ions such as plutonium may become irreversibly bound to mineral surfaces over time which has implications for near- and far-field transport of Pu. Batch adsorption–desorption data were collected as a func