Index Catalog // ScholarsArchive@OSU

Distribution, form, and signigicance of plant opal in Oregon soils

Creator:: Norgren, Joel A.
Abstract:: This study was undertaken to increase knowledge of opal phytoliths in plants and soils of Oregon, and thus encourage further use of phytoliths in future pedologic investigations. Content of plant opal in needles from ten common Oregon conifer species ranged from 0.2 to 7.9%. Western larch (Larix occidentalis) contained the...
Resource Type:: Dissertation

Factors which differentiate United States students who wish to study in cross-cultural educational programs

Creator:: Heisler, Mary Kathryn, 1943-
Resource Type:: Dissertation

Friction losses for water flowing in non-circular ducts

Creator:: Mohandes, Abdolhosein
Abstract:: Friction factors were measured for water flowing in ducts made up of two rods held between two flat plates. Three rod diameters of 0.50, 1.00 and 1.50 inches were used. The spacings between rods varied from 0.0 to 0.32 inch. It was found that the concept of hydraulic diameter was...
Resource Type:: Masters Thesis

Gas chromatographic determination of selenium in biological materials

Creator:: Pedersen, Nels David
Abstract:: A method for the determination of selenium in biological materials by gas-liquid chromatography has been developed and successfully applied to kidney, heart, liver, and muscle tissue. The initial digestion of animal tissue was accomplished in a mixture of nitric and perchloric acids (3:1) until "water whiteness'' of solution was achieved....
Resource Type:: Masters Thesis

Automatic time correction for interconnected power system operation

Creator:: Thurein, Ingo Paul
Abstract:: The North American interconnected power systems continuously attempt to hold power system time as close to standard time as possible. All inherent problems associated with normal power system operation make this a difficult task. System time is presently allowed to deviate from standard time by up to two seconds before...
Resource Type:: Masters Thesis

Oxy-Cope, and Siloxy-Cope rearrangement of cis-1-vinylcyclooct-3-en-1-ol

Creator:: Chin, Alice Wai-lee
Abstract:: Both oxy-Cope and siloxy-Cope rearrangements involve (1, 3) and (3, 3) sigrnatropic shifts. Both the concerted mechanism, and the stepwise mechanism via a diradical intermediate are possible. In a cyclic system such as cis-l-vinylcyclooct-3-en-l-ol, the thermal rearrangement takes place preferably through a diradical intermediate. At high temperature, the reaction also...
Resource Type:: Masters Thesis

Potato yield and grade as influenced by nitrogen fertilizer and irrigation frequency

Creator:: Jacks, Clinton Cecil
Abstract:: The effects of irrigation frequencies and rates and time of nitrogen fertilizer application on the yields, grades and N status of Russet Burbank potatoes were determined on a sandy soil near Hermiston, Oregon. Increasing the frequency of irrigation from 72 to 48 to 12-hours did not result in increases of...
Resource Type:: Masters Thesis

Interrelationships of Meloidogyne hapla Chitwood, 1949 with Heterodera schachtii Schmidt, 1871 on Beta vulgaris L.

Creator:: Jatala, Parviz
Abstract:: Self-interactions (effects of reinoculation with the same nematode) in Meloidogyne hapla and Heterodera schachtii on Beta vulpris at different levels of inocula with various population combinations were studied. In M. hapla, the only significant increase of galls was noted in treatments when 250+250 larvae were inoculated at 10-day intervals. Longevity...
Resource Type:: Dissertation

Concentration and velocity profiles for flow-coupled diffusion

Creator:: Stock, David E.
Resource Type:: Dissertation

Biological studies on Saldula palustris (Douglas) with emphasis on factors influencing wing pigmentation (Heteroptera:Saldidae)

Creator:: Stock, Mary Wilford
Abstract:: The life history and wing pattern variation of the intertidal shore bug, Saldula palustris (Douglas), were studied in field and experimental populations from June 1970 until February 1972. The study site was an estuarine salt marsh on Yaquina Bay near Toledo, Oregon. The insects live below mean high water level...
Resource Type:: Dissertation

ScholarsArchive@OSU

Distribution, form, and signigicance of plant opal in Oregon soils

Factors which differentiate United States students who wish to study in cross-cultural educational programs

Friction losses for water flowing in non-circular ducts

Gas chromatographic determination of selenium in biological materials

Automatic time correction for interconnected power system operation

Oxy-Cope, and Siloxy-Cope rearrangement of cis-1-vinylcyclooct-3-en-1-ol

Potato yield and grade as influenced by nitrogen fertilizer and irrigation frequency

Interrelationships of Meloidogyne hapla Chitwood, 1949 with Heterodera schachtii Schmidt, 1871 on Beta vulgaris L.

Concentration and velocity profiles for flow-coupled diffusion

Biological studies on Saldula palustris (Douglas) with emphasis on factors influencing wing pigmentation (Heteroptera:Saldidae)

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