Index Catalog // ScholarsArchive@OSU

Multiple excitation fluorometer for in situ oceanographic applications

Creator:: Desiderio, Russell A., Moore, Casey, Lantz, Carl, and Cowles, Timothy J.
Abstract:: A new in situ fluorometer for the detection of oceanic photosynthetic pigment fluorescence is described. Emission spectra from 546 to 733 nm are recorded for each of three different visible excitation bands ten times a second. A Spectralon cell is used to improve the excitation coupling to and the collection...
Resource Type:: Article
Full Text:: applications Multiple excitation fluorometer for in situ oceanographic applications Russell A. Desiderio

In situ monitoring of ocean chlorophyll via laser-induced fluorescence backscattering through an optical fiber

Creator:: Cowles, Timothy J., Moum, James N., Desiderio, Russell A., and Angel, Stanley M.
Abstract:: The first seagoing test of a prototype laser/fiber-optic system for in situ detection of ocean chlorophyll fluorescence is described. Radiation at 488 nm originating from a shipboard argon laser was transmitted through 20 of 200-µm core optical fiber to the distal tip mounted on the microstructure profiler, the Rapid Sampling...
Resource Type:: Article
Full Text:: fluorescence backscattering through an optical fiber Timothy J. Cowles, James N. Moum, Russell A. Desiderio

Using lasers to probe the transient light absorption by proteorhodopsin in marine bacterioplankton

Creator:: Desiderio, Russell A., Laney, Samuel R., Letelier, Ricardo M., and Giovannoni, Stephen J.
Abstract:: We constructed an experimental apparatus that used lasers to provide the probe beams for measuring the transient absorption kinetics of bacterioplankton that contain proteorhodopsin, a microbial protein that binds retinal and is analogous to animal rhodopsin. With this approach we were able to observe photocycles characteristic of functioning retinylidene ion...
Resource Type:: Article
Full Text:: proteorhodopsin in marine bacterioplankton Russell A. Desiderio,1,* Samuel R. Laney,1,3 Ricardo M. Letelier,1 and

Microstructure Profiles of Laser-induced Chlorophyll Fluorescence Spectra: Evaluation of Backscatter and Forward-Scatter Fiber-Optic Sensors

Creator:: Desiderio, Russell A., Cowles, Timothy J., Moum, James N., and Myrick, Michael
Abstract:: The implementation and characterization of backscatter and forward-scatter fiber-optic fluorescence sensors attached to a microstructure profiling instrument are described. By using an optical multichannel array detector to record emission spectra, eight profiles per hour of chlorophyll fluorescence spectra at 2-cm intervals can be obtained throughout the upper 100 m of...
Resource Type:: Article

Replica-plating and computer analysis for rapid identification of microorganisms in seafoods

Creator:: Corlett, Donald A.
Abstract:: A method was devised and tested for rapid and quantitative identification of microbial flora in fresh seafoods. The rapid identification of large numbers of isolates was made possible by (1) a simplified identification scheme established by reference culture studies and from the known reactions of microorganisms reported in the literature,...
Resource Type:: Dissertation
Full Text:: MICROORGANISMS IN SEAFOODS Abstract approved , ^y (Major ]kt6fessor) A method was devised and

Structural evolution of the Russell Ranch oil field and vicinity, southern Coast Ranges, California

Creator:: Nevins, Barbara B.
Abstract:: The Russell Ranch oil field is located in the southern Coast Ranges west of Bakersfield, California. Detailed subsurface mapping shows that a northwest-oriented right-lateral wrench-fault system was active from possibly latest Oligocene to Pliocene time. The effects of Quaternary thrusting were superimposed on, and influenced by, structures associated with the...
Resource Type:: Masters Thesis

Whole farm case studies : a how-to guide

Creator:: Murray, Helene
Abstract:: Calls for increased farmer involvement in research and extension programs have been numerous and well supported. One approach to integrate the collective knowledge and experience of agricultural scientists and farmers is through whole farm case studies (WFCS). An interdisciplinary team of 34 research and extension personnel at Oregon and Washington...
Resource Type:: Dissertation
Full Text:: Whole farm case studies : a how-to guide AN ABSTRACT

Projected income and employment impacts of a decline in the timber resource base of a highly timber-dependent economy

Creator:: Flacco, Paul Richard
Resource Type:: Masters Thesis
Full Text:: BASE OF A HIGHLY TIMBER-DEPENDENT ECONOMY Abstract approved: Russell C. Yourrmns ^i-*-"- t

Economic evaluation of a social investment in natural resource development: water

Creator:: Roca, Gaston Harold
Resource Type:: Masters Thesis

Hypothalamic Leptin Gene Therapy Does Not Prevent Ovariectomy-Induced Bone Loss in Rats

Creator:: Jackson, Melanie A.
Abstract:: Post-menopausal women are at an increased risk for osteoporosis due to increased bone resorption associated with estrogen deficiency. Subcutaneous administration of leptin, a hormone produced primarily by adipocytes, attenuates bone loss in the ovariectomized (ovx) rat, an animal model for post-menopausal bone loss. Leptin has both direct peripheral and indirect...
Resource Type:: Honors College Thesis
Full Text:: ABSTRACT TO THE THESIS OF Melanie A. Jackson for the degree of Honors Baccalaureate of Science in

Effects of 12 months of voluntary alcohol self-administration on intracortical bone remodeling in a rhesus macaque model

Creator:: Gaddini, Gino W.
Abstract:: Background: Alcohol is a nonessential nutrient widely consumed throughout the world. Chronic alcohol abuse is associated with numerous adverse skeletal effects. However, prior to this study, the effects of alcohol abuse on intracortical bone remodeling in an animal model had not been investigated. Reduced intracortical bone remodeling could impair repair...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Urszula T. Iwaniec Russell T. Turner Background: Alcohol is a nonessential nutrient

The effect of methylation upon the antioxidant and chelation capacity of quercetin and dihydroquercetin in a lard substrate

Creator:: Crawford, David Lee
Resource Type:: Masters Thesis
Full Text:: CAPACITY OF QTJERCETIH AKD DIHYDROQUERCETIM IM A LARD SUBSTRATE by DAVID LEE CRAWFORD A THESIS

An interindustry analysis of the effects of a new industry on the public and private sectors in Clatsop County, Oregon

Creator:: Collin, Theodore George
Resource Type:: Masters Thesis
Full Text:: , 1970 Title: AN INTERINDUSTRY ANALYSIS OF THE EFFECTS OF A NEW INDUSTRY ON THE PUBLIC AND PRIVATE

Evaluation and use of a soil mineralizable nitrogen test to determine the fertilizer nitrogen needs of winter wheat grown in western Oregon

Creator:: Baloch, Dost M.
Abstract:: The assessment of optimum nitrogen (N) fertilizer need for winter wheat (Triticum aestivum L.) is important for economic and environmental sustainability. A comprehensive understanding of fertilizer N requirement depends on estimation of the quantity of N needed by the crop versus that supplied by soil. The objectives of this study...
Resource Type:: Dissertation
Full Text:: Evaluation and Use of a Soil Mineralizable Nitrogen Test to

The quantification of malonaldehyde in marine lipids with para-aminobenzoic acid

Creator:: Follett, Mark Samuel
Abstract:: Malonaldehyde, a very reactive member of the homologous series of dialdehydes, is associated with the autoxidative deterioration of lipids. Its measurement, in autoxidized lipid systems is an expression of the extent of oxidation, in lipids. Malonaldehyde lends itself well to such determinations because of the sensitivity and specificity of its...
Resource Type:: Masters Thesis
Full Text:: ACID Abstract approved: (/ R. OCJinnhuber Malonaldehyde, a very reactive member of the

Differences in dry matter production and nitrogen uptake and partitioning among spring wheat (Triticum Aestivum L.) varieties

Creator:: Hitchcock, Todd
Abstract:: Grain protein concentration of wheat is influenced by numerous factors. When determining a wheat variety's ability to produce protein, the plant's ability to uptake and translocate nitrogen is critical. A greenhouse study was conducted to assess differences in nitrogen use among different wheat varieties. The objective was to determine if...
Resource Type:: Undergraduate Thesis

Biological preparation of ¹⁴C labeled aflatoxin

Creator:: Schoenhard, Grant Louis
Abstract:: Selected parameters that affect crude toxin production in both primary culture (growing cell culture) and resting culture were examined during efforts to produce sufficient crude toxin for purification. The parameters included carbohydrate and label source and concentration, cell concentration, incubation time and temperature and shaker speed. A higher yield of...
Resource Type:: Masters Thesis

Growth and development of spring grain species as affected by planting date

Creator:: Armah-Agyeman, Grace
Abstract:: Changes in the federal farm program, in rainfall pattern and quantity, and increased incidence of herbicide resistant weeds and diseases have generated increased interest in spring grains in the Pacific Northwest. However, spring grains have traditionally been treated as minor crops in this region, thus little research has been done...
Resource Type:: Dissertation
Full Text:: as Affected by Planting Date. Abstract approved: ----- Russell S. Karow Changes in the federal

Changes in the lipid composition of rainbow trout (Salmo gairdnerii) fed cyclopropenoid fatty acids

Creator:: Roehm, Jeffrey Noyes
Abstract:: Rainbow trout were fed semi-purified diets containing cyclopropenoid fatty acids, and the biological effects of these acids were investigated. These fatty acids occur naturally in cottonseed oil and have been implicated in a large number of physiological disorders. Included in this study was an investigation of the pattern of deposition...
Resource Type:: Dissertation
Full Text:: investigated. These fatty acids occur naturally in cottonseed oil and have been implicated in a large

Malonaldehyde : certain chemical and biological properties

Creator:: Crawford, David Lee
Abstract:: Malonaldehyde, a three carbon dialdehyde, is one of the numerous carbonyl compounds associated with oxidative deterioration of food lipids. It is assumed to be formed as a product of lipid autoxidation occurring according to the generally accepted free radical mechanism. This compound is of great interest because of its potential...
Resource Type:: Dissertation
Full Text:: v (Major professor) Malonaldehyde, a three carbon dialdehyde, is one of the numer- ous

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