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Filtering by: Creator Ryan, Lawrence J. Remove constraint Creator: Ryan, Lawrence J. Academic Affiliation Oceanography Remove constraint Academic Affiliation: Oceanography Advisor Forster, William O. Remove constraint Advisor: Forster, William O.

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  • Vertical distribution of radioactivity in the Columbia River estuary

    Creator:
    Hanson, Peter James
    Abstract:
    In situ salinity, turbidity and temperature were measured at discrete depths and water samples for radioanalysis were simultaneously collected in the Columbia River Estuary using a specially designed instrument package. Particulate radioactivity was concentrated by filtration and the dissolved radioactivity by evaporation or ferric oxide bulk precipitation. Radioanalysis was by...
    Resource Type:
    Masters Thesis
    Full Text:
    microns,,z STATE I colloidal solution I atom J moleculesuspension Figure 3. Division of radionuclides

  • Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

    Creator:
    Renfro, William Charles
    Abstract:
    Levels of ⁶⁵Zn in water, sediments, plants, and animals in Alder Slough, a small ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concentrations of total Zn in organisms were also measured to permit computation of specific activities (μCi⁶⁵Zn/g total Zn). Temporal fluctuations in the...
    Resource Type:
    Dissertation
    Full Text:
    150 ° 100 50 0 250 \ 200 N 150 Q5 100 ,.,j 1.3 II K 0.9 07\ 0.5 ".3 o 0.3 0.I 65Zn

  • Effects of ⁶⁰Co gamma irradiation on the reproductive performance of the brine shrimp, Artemia

    Creator:
    Holton, Robert L.
    Abstract:
    The brine shrimp, Artemia, was used as an experimental organism to study the effects of ⁶⁰Co gamma irradiation on the reproductive performance of an animal population. The total reproductive ability of the brine shrimp was fractionated into various components and the effects of irradiation on each of these components was...
    Resource Type:
    Dissertation
    Full Text:
    Dean of Graduate School Date thesis is presented (j Typed by Nancy S. Kerley for Robert Lawrence

  • Antimony-124 in the lower Columbia River

    Creator:
    Pope, Stephen Van Wyck
    Resource Type:
    Masters Thesis
    Full Text:
    and his co-workers hypothesized that uncharged 10 U, 4- 0 [J -I0 pH Figure 1. Eh-pH diagram