Index Catalog // ScholarsArchive@OSU

Taxonomy and distribution of the leaf-hopper genus Aphrodes Curtis (Homoptera:Cicadellidae) in North America

Creator:: Klein, Terry Allen
Abstract:: The subfamily Aphrodinae is represented in the Nearctic Region by eight species contained in a single tribe, Aphrodini, and genus Aphrodes. The external and internal morphology, biology and ecology of the Nearctic members of the genus Aphrodes were investigated. Distributional evidence indicates that six of the eight species, belonging to...
Resource Type:: Masters Thesis
Full Text:: , 1975 Title: TAXONOMY AND DISTRIBUTION OF THE LEAFHOPPER GENUS APHRODES CURTIS (HOMOPTERA:CICADELLIDAE

R factor transfer among bacteria isolated from the environment

Creator:: Latimer, Joan Marie
Resource Type:: Masters Thesis
Full Text:: -2, an RNA bacteriophage, was obtained from Dr. L. R. Brown, Oregon State University. MS-2 was used

A chemical study of the minerals from L-6 chondritic meteorites

Creator:: Curtis, David Ballantyne
Abstract:: Major and minor minerals have been separated from three L-6 chondritic meteorites (Alfianello, Colby (Wisconsin), and Leedey). Olivine, hypersthene, diopside, feldspar, troilite, chromite, phosphate minerals, and metallic minerals were analyzed for major, minor and trace elements using instrumental neutron activation analysis and radiochemical neutron activation analysis techniques. Concentrations df the...
Resource Type:: Dissertation
Full Text:: A chemical investigation of minerals in L-6 chondritic

Dieldrin stimulates biliary excretion of [14 C] benzo[a]pyrene polar metabolites but does not change the metabolite profile in rainbow trout (Oncorhyncus mykiss)

Creator:: Barnhill, Melanie L.
Abstract:: Feeding rainbow trout 0.3-0.4 mg dieldrinlkg/d for 9-12 weeks stimulated the biliary excretion of a subsequent dose of [¹⁴C]dieldrin by 500% and [³H]7,12- dimethylbenz[a]anthracene (DMBA) by 240%. In vitro work demonstrated that this interaction occurred without induction of the cytochrome P450 system, or other hepatocellular proteins involved in metabolism. The...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Melanie L. Barnhill for the degree

Mercury distribution in sediments and uptake into an aquatic food web at Cottage Grove Reservoir, Oregon

Creator:: Morgans, Donna L.
Abstract:: The Cottage Grove Reservoir has been impacted by a point source (Black Butte Mine), where mercury mining and processing has occurred within its watershed from the 1890's to the late 1960's. Total mercury concentrations in surface sediments transect samples, core samples, tributary samples, and representative food web species were measured...
Resource Type:: Masters Thesis
Full Text:: Abstract a,ved AN ABSTRACT OF THE THESIS OF Donna L. Morgans

Petrology and geochemistry of the Emigrant Pass volcanics, Nevada : implications for a magmatic-hydrothermal origin of the Carlin gold deposits

Creator:: Johnson, Curtis L.
Abstract:: The Emigrant Pass volcanics (EPV) are a 38.3 to 36.4 Ma calc-alkaline volcanic center that erupted andesite and dacite, and a late series of felsic dikes along the south flank of the Carlin gold district in north-central Nevada. The EPV includes dacite and rhyolite porphyry dikes indistinguishable from porphyry dikes...
Resource Type:: Masters Thesis
Full Text:: , Nevada AN ABSTRACT OF THE THESIS OF Curtis L. Johnson for the degree of Master of Science in

An experimental investigation of the cloze procedure as a measure of program understanding

Creator:: Ullrich, James R.
Abstract:: Previous research in program understanding has been hampered by the lack of an easy tool to measure the degree of that understanding. The cloze procedure, suggested by Cook, Bregar, and Foote (1984) was an attempt to find a simple, reliable, and valid measure of program understanding. In this procedure, tokens...
Resource Type:: Masters Thesis
Full Text:: a measure of program understanding AN ABSTRACT OF THE THESIS OF James R. Ulirich for the degree

Differences between mineral analyses from cork spotted and extra fancy 'Anjou' pear fruit

Creator:: Curtis, Daniel W.
Abstract:: The feasibility of using a post harvest sampling time for fruit testing in Anjou pears was evaluated. The goal was to determine if a simple and rapid analysis of fruit tissues could be useful in identifying potentially weak fruit that could be marketed before the onset of the storage disorder...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Daniel W. Curtis for the degree of

Special Nuclear Material Analysis Using Temporal Gamma-Ray Spectroscopy and Machine Learning Methods

Creator:: Curtis, Jessica R.
Abstract:: Following thermal neutron induced fission, supervised machine learning and temporal gamma-ray spectroscopy methods were used to identify differences in the delayed gamma-ray spectra of Pu-239 and U-235. The temporal gamma-ray spectroscopy method takes advantage of the time-dependent decay of fission products. Employing Spearman's rank-order correlation coefficient and without prior knowledge...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jessica R. Curtis for the

Performance Based Tests on Cross Laminated Timber - Concrete Composite Floor Panels

Creator:: Blank, Curtis
Abstract:: This project determines the short term and long term effective stiffness values for Cross Laminated Timber (CLT) with a reinforced concrete topping. The reinforced concrete was attached to the CLT panels with interface connections, and different types of interface connections were tested. Throughout this project, there are 31 tests with...
Resource Type:: Masters Thesis
Full Text:: release of my thesis to any reader upon request. Curtis L. Blank, Author

ScholarsArchive@OSU

Taxonomy and distribution of the leaf-hopper genus Aphrodes Curtis (Homoptera:Cicadellidae) in North America

R factor transfer among bacteria isolated from the environment

A chemical study of the minerals from L-6 chondritic meteorites

Dieldrin stimulates biliary excretion of [14 C] benzo[a]pyrene polar metabolites but does not change the metabolite profile in rainbow trout (Oncorhyncus mykiss)

Mercury distribution in sediments and uptake into an aquatic food web at Cottage Grove Reservoir, Oregon

Petrology and geochemistry of the Emigrant Pass volcanics, Nevada : implications for a magmatic-hydrothermal origin of the Carlin gold deposits

An experimental investigation of the cloze procedure as a measure of program understanding

Differences between mineral analyses from cork spotted and extra fancy 'Anjou' pear fruit

Special Nuclear Material Analysis Using Temporal Gamma-Ray Spectroscopy and Machine Learning Methods

Performance Based Tests on Cross Laminated Timber - Concrete Composite Floor Panels

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