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Creator:: McKenzie-Carter, Michael A.
Abstract:: The patterns of uptake, retention, and tissue distribution of ⁹⁵mTc in two freshwater species, the crayfish Pacifastacus leniusculus and the snail Juga silicula have been investigated. The animals were chronically exposed in water to which sodium pertechnetate had been added. Final whole-body concentration ratios (CR) obtained were 1.6 and 41...
Resource Type:: Masters Thesis
Full Text:: , respectively. Following the uptake study the animals were placed in fresh non-radioactive water for a

Creator:: Bolen, John Joseph
Abstract:: The seasonal concentration, turnover and mode of accumulation of ³²P by the juvenile starry flounder in Alder Slough, a small eco-system in the Columbia River Estuary, was examined during 1969 and 1970. Levels of ³²P and concentrations of total P were measured to permit computation of specific activities (nCi³²P/g total...
Resource Type:: Dissertation
Full Text:: Columbia River water and feeding radioactive and non-radioactive amphipod-isopod mixtures in the presence

Creator:: Holton, Robert L., Pearcy, William G., Cutshall, Norman H., and McMechan, Karla J.
Abstract:: This report represents the progress in "Ecological and Radioecological Studies in the Columbia River Estuary and Adjacent Pacific Ocean" for the period 1 April 1975 through 31 March 1976. This research has been supported with funds from the Division of Biomedical and Environmental Research, U.S. Energy Research and Development Administration...
Resource Type:: Technical Report
Full Text:: REPORT Ecological and Radioecological Studies in the Columbia River Estuary and Adjacent Pacific Ocean

Creator:: Wu, Renpo
Resource Type:: Masters Thesis
Full Text:: number of radioactive materials into the Columbia River during 1945-1974. Radionuclides in the Columbia

Creator:: Napier, Jonathan Bamberger
Abstract:: Concentration ratios are used to determine the transfer of nuclides from soil to biota to fauna. Some nuclides have limited associated data though, this has not prevented predictions from being performed at sites without associated data. These ratios are site specific and are not fully applicable when applied to other...
Resource Type:: Masters Thesis
Full Text:: River. The river blockage caused the formation of the Glacial Lake Missoula, near present day

Creator:: Carson, Andrea L.
Abstract:: From the 1960s to 1990s, the water quality of Dian Lake (滇池), China's sixth largest freshwater lake located outside the capital of Yunnan Province, Kunming City, rapidly declined causing livelihood disruption, decreased water availability, and biodiversity loss. Despite significant investments in remediation efforts, only small water quality improvements have been...
Resource Type:: Masters Thesis
Full Text:: larger river basin system but also is a lake basin within that system. The development of IRBM in China

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