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Filtering by: Decade 1970-1979 Date issued sim 1975-05-12

Experiments on cable strumming and flow induced drag

Creator:

Barnes, Bert Lee

Abstract:

Short non-flexible elements of cable were driven harmonically in water while constrained by springs. The cable elements were observed to oscillate at approximately the Strouhal vortex shedding frequency. Damped resonance occurred near the point where the natural frequency and the Strouhal vertex shedding frequency were equal. Transverse oscillation amplitudes greater...

Resource Type:

Masters Thesis
Polymorphic, sympatric flavonoid variants of Claytonia perfoliata Donn from the Columbia River Gorge

Creator:

Miller, John M.

Abstract:

Claytonia perfoliata is a west-American polyploid complex of common annuals (x=6). The species is polymorphic; exomorphic characters are often variable within local populations. In a transect of the Columbia River Gorge diploids, tetraploids, hexaploids, octoploids, and decaploids were collected, which varied in shape of basal and cauline leaves, degree of...

Resource Type:

Masters Thesis
Donor centers in vanadium pentoxide

Creator:

Yerke, John Fredric

Abstract:

The dielectric relaxation of V₂ 0₅ was investigated using the method of Davidson and Cole. By means of an Argand diagram, deviation from an exact Debye dielectric was established. This was done with the parameter β. For a Debye dielectric β= 1. The largest value of β for V₂O₅ was...

Resource Type:

Masters Thesis
Growth, enterotoxin production and energy charge of Staphylococcus aureus under three gaseous environments

Creator:

Park, Sue Sookja

Abstract:

The effect of different oxygen atmospheres on growth, energy charge and enterotoxin production of Staphylococcus aureus was investigated. Three atmospheres, air, 5% oxygen in nitrogen and 20% oxygen in nitrogen, were tested on three strains producing enterotoxins A, B and C. Colony forming units (CFU), dry weight, dissolved oxygen, pH,...

Resource Type:

Dissertation