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An Adjoint Sensitivity Model for Steady-State Sequentially Coupled Radionuclide Transport in Porous Media 期刊论文
WATER RESOURCES RESEARCH, 2019
作者:  Hayek, Mohamed;  RamaRao, Banda S.;  Lavenue, Marsh
收藏  |  浏览/下载:6/0  |  提交时间:2020/02/16
sensitivity analysis  adjoint method  analytical solutions  radionuclide transport  
Coupling Radioactive Waste Glass Dissolution Measurements in Generic Groundwaters With Reactive Transport Modeling of Repository Scenarios 期刊论文
WATER RESOURCES RESEARCH, 2019
作者:  Iwalewa, T. M.;  Farnan, I.
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
radioactive waste glass  dissolution rate  groundwater  reactive transport model  radionuclide  geological repository  
Effects of Fine-Scale Surface Alterations on Tracer Retention in a Fractured Crystalline Rock From the Grimsel Test Site 期刊论文
WATER RESOURCES RESEARCH, 2018, 54 (11) : 9287-9305
作者:  Tachi, Yukio;  Ito, Tsuyoshi;  Akagi, Yosuke;  Satoh, Hisao;  Martin, Andrew J.
收藏  |  浏览/下载:3/0  |  提交时间:2019/04/09
fractured crystalline rock  surface alteration  radionuclide migration  matrix diffusion  sorption  Grimsel Test Site  
Metaproteomics Identifies the Protein Machinery Involved in Metal and Radionuclide Reduction in Subsurface Microbiomes and Elucidates Mechanisms and U(VI) Reduction Immobilization 科技报告
来源:US Department of Energy (DOE). 出版年: 2015
作者:  Pfiffner, Susan M.;  LĂśffler, Frank;  Ritalahti, Kirsti;  Sayler, Gary;  Layton, Alice;  Hettich, Robert
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/05
Dissimilatory metal-reducing bacteria  proteomics  c-type cytochrome  radionuclide reduction  
2014 LANL Radionuclide Air Emissions Report 科技报告
来源:US Department of Energy (DOE). 出版年: 2015
作者:  Fuehne, David Patrick
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/05
Air quality  Environmental Protection  Rad-NESHAP, Radionuclide NESHAP, Air emissions, dose  
Establishment of a Background Environmental Monitoring Station for the PNNL Campus 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Fritz, Brad G.;  Snyder, Sandra F.;  Barnett, J. Matthew
收藏  |  浏览/下载:1/0  |  提交时间:2019/04/05
background  environmental surveillance  air sampling  radionuclide air emissions  
Tonopah Test Range Air Monitoring: CY2013 Meteorological, Radiological, and Airborne Particulate Observations 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Mizell, Steve A;  Nikolich, George;  Shadel, Craig;  McCurdy, Greg;  Etyemezian, Vicken;  Miller, Julianne J
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/05
In 1963  the U.S. Department of Energy (DOE) (formerly the Atomic Energy Commission [AEC])  implemented Operation Roller Coaster on the Tonopah Test Range (TTR) and an adjacent area of the Nevada Test and Training Range (NTTR) (formerly the Nellis Air Force Range). This test resulted in radionuclide-contaminated soils at Clean Slate I  II  and III. This report documents observations made during on-going monitoring of radiological  meteorological  and dust conditions at stations installed adjacent to Clean Slate I and Clean Slate III and at the TTR Range Operations Control center. The primary objective of the monitoring effort is to determine if winds blowing across the Clean Slate sites are transporting particles of radionuclide-contaminated soils beyond both the physical and administrative boundaries of the sites. Results for the calendar year (CY) 2013 monitoring include: (1) the gross alpha and gross beta values from the monitoring stations are approximately equivalent to the highest values observed during the CY2012 reporting at the surrounding Community Environmental Monitoring Program (CEMP) stations (this was the latest documented data available at the time of this writing)  (2) only naturally occurring radionuclides were identified in the gamma spectral analyses  (3) the ambient gamma radiation measurements indicate that the average annual gamma exposure is similar at all three monitoring stations and periodic intervals of increased gamma values appear to be associated with storm fronts passing through the area  and (4) the concentrations of both resuspended dust and saltated sand particles generally increase with increasing wind speed. However  differences in the observed dust concentrations are likely due to differences in the soil characteristics immediately adjacent to the monitoring stations. Neither the resuspended particulate radiological analyses nor the ambient gamma radiation measurements suggest wind transport of radionuclide-contaminated soils.  
Project 57 Air Monitoring Annual Report - Fiscal Year 2013 (October 1, 2012 to September 30, 2013) 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Miller, Julianne J.;  McCurdy, Greg;  Mizell, Steve A
收藏  |  浏览/下载:8/0  |  提交时间:2019/04/05
The U.S. Department of Energy (DOE)  National Nuclear Security Administration  Nevada Field Office (NNSA/NFO) is currently working to achieve regulatory closure of radionuclide-contaminated Soils sites under its auspices. Corrective Action Unit (CAU) 415  Project 57 No. 1 Plutonium Dispersion Site is located in Emigrant Valley  Nevada  on Range 4808A of the Nevada Test and Training Range (NTTR)  and consists of one Corrective Action Site (CAS): NAFR-23-02  Pu Contaminated Soil. Closure plans being developed for the CAUs both on and off of the Nevada National Security Site (NNSS) may include postclosure monitoring for the possible release of radioactive contaminants. Determining the potential for transport of radionuclide-contaminated soils under ambient climatic conditions will facilitate an appropriate closure design and postclosure monitoring program. The DOE has authorized the Desert Research Institute (DRI) to conduct field assessments of potential transport of radionuclide-contaminated soil from the Project 57 site during ambient wind events. The assessment is intended to provide site-specific information on meteorological conditions that result in airborne soil particle redistribution  as well as determine which  if any  radiological contaminants may be entrained with the soil particles and estimate their concentrations.  
2013 LANL Radionuclide Air Emissions Report 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Fuehne, David P.
收藏  |  浏览/下载:1/0  |  提交时间:2019/04/05
Air quality  Environmental Protection  Rad-NESHAP  Radionuclide NESHAP  stack  emissions  
Radionuclide Air Emissions Report for 2012 科技报告
来源:US Department of Energy (DOE). 出版年: 2013
作者:  Wahl, Linnea
收藏  |  浏览/下载:2/0  |  提交时间:2019/04/05
NESHAP  Radionuclide Air Emission Report for 2012