Index Catalog // ScholarsArchive@OSU

Carbon isotopes show snowpack acts as a valuable moisture subsidy to mountain forests in the Oregon Cascades

Creator:: Ratcliff, Christopher J.
Abstract:: This study examines climatological influences, particularly that of snowpack, on tree growth and stable carbon isotope discrimination (Δ¹³C) from ~1980 to 2013 at two sites located in the upper reaches of the McKenzie River watershed of the Oregon Cascade Mountains. We tested the use of Δ¹³C values from latewood, corroborated...
Resource Type:: Undergraduate Thesis
Full Text:: . A circular fixed plot (r = 13.8 m) was set to characterize the tree density and basal area of each

Changes in otolith morphology of juvenile chinook salmon (Onchorhynchus tshawytscha) in different hatchery rearing conditions

Creator:: Ehrke, Melissa A.
Abstract:: The decline of the Chinook Salmon has been a mystery of recent years due to their decline. It has been speculated that wild origin salmon have more vigor and survivability than hatchery reared fish. This is thought to be due to rearing conditions, possibly affecting sensory organ development. The sensory...
Resource Type:: Presentation
Full Text:: otoliths at the terminal end of this life stage can provide information on individual condition prior

Inhibition of α-Amylase and α-Glucosidase by Bioflavonoids

Creator:: Griffith, Anneke M. (Tucker)
Abstract:: Various flavonoid-rich plant extracts have shown efficacy in the treatment of diabetes. Although it is often assumed that dietary flavonoids exert biological antioxidant effects, it is possible that the observed effects work in carbohydrate metabolism. In this study we evaluated the effect of catechins and catechin containing extracts on α-amylase...
Resource Type:: Presentation and Honors College Thesis
Full Text:: minute for 60 minutes by measuring the fluorescence of the starch using an excitation wavelength of 485

The Inhibition of a-Amylase and a-Glucosidase by Bioflavonoids

Creator:: Griffith, Anneke M.
Abstract:: Various flavonoid-rich plant extracts have shown efficacy in the treatment of diabetes. Although it is often assumed that dietary flavonoids exert biological antioxidant effects, it is possible that the observed effects work in carbohydrate metabolism. In this study we evaluated the effect of catechins and catechin containing extracts on α-amylase...
Resource Type:: Honors College Thesis
Full Text:: minute for 60 minutes by measuring the fluorescence of the starch using an excitation wavelength of 485

Antibiotic Resistance Gene Transfer in Oysters as a Result of Fecal Pollution

Creator:: Cooper, Rebecca
Abstract:: Antibiotic resistance is an increasing problem in many species of bacteria today, with pathogens an important focus. Fecal contamination of shellfish is already a concern due to potential pathogens. This report examines the possibility of resistance gene transfer between microbes, due to fecal bacteria, within the oyster. In this study,...
Resource Type:: Undergraduate Thesis
Full Text:: aliquot of DNA used as template then no positive result would be observed, though transconjugants may be

A Panel of Histone H3 Mutations to Investigate Centromere Maintenance and Gene Silencing

Creator:: Esposito, Madison L.
Abstract:: Modifications of histone tail amino acid residues are necessary for many reactions involving chromatin. These processes can produce transcriptionally active, euchromatic, or inactive, heterochromatic, segments of DNA. The formation and maintenance of facultative heterochromatin is critical for the proper growth and development of many eukaryotes. Euchromatin can be changed into...
Resource Type:: Undergraduate Thesis and Presentation
Full Text:: by DpnI CLICK For methylation, ligation, and amplification of plasmid CLICK No band low DNA 1 band

Effects of Contemporary Forest Practices on Stream Nutrients, Temperature, and Periphyton in Small Headwater Streams

Creator:: Pimont, Cedric
Abstract:: Forest harvest practices can impact nutrient concentrations and stream temperatures, altering aquatic ecosystems. To better inform future sustainable forest resource management practices, quantifying the impact of current practices on water quality, particularly in headwater streams is important. In this study, I quantified monthly nitrate-nitrite (N) and orthophosphate (P) concentrations, 7-day...
Resource Type:: Honors College Thesis
Full Text:: the date of measurement. Out of these, the model with the lowest Bayesian Information

Light quality manipulation for the solvent extraction of phycocyanin from Oregon freshwater cyanobacteria

Creator:: Gregor, Katelin
Abstract:: Phycocyanin, a photosynthetic pigment-protein complex produced by cyanobacteria, has critical value in the medical field at high purity. Costs associated with the extraction of this pigment are high, emphasizing the importance of optimal growth conditions. The aim of this study was to investigate potential commercial producers of phycocyanin by evaluating...
Resource Type:: Honors College Thesis
Full Text:: < 0.001), as was the PC of BF2 (p < 0.001). All other morphospecies demonstrated no significant

Controlled Orientation of Engineered Carbonic Anhydrase on a Surface : A Model for Protein Immobilization for Biosensors and Biomaterials

Creator:: Brown, Wesley
Abstract:: Current protein immobilization techniques lack defined control over protein orientation. Protein orientation is important for making biosensors and biomaterials that are sensitive and efficient and can be crucial for designing some devices such as immunosensors or direct electron transferring biocells. A new method of protein immobilization is proposed that takes...
Resource Type:: Honors College Thesis
Full Text:: after binding of the substrate to the antibody there is no further need for labeling for instrument

Changes in Otolith Shape in Juvenile Chinook Salmon in Different Hatchery Rearing Conditions

Creator:: Ehrke, Melissa A.
Abstract:: The decline of the Chinook Salmon has been a mystery of recent years due to their decline. It has been speculated that wild origin salmon have more vigor and survivability than hatchery reared fish. This is thought to be due to rearing conditions, possibly affecting sensory organ development. The sensory...
Resource Type:: Undergraduate Thesis
Full Text:: information on stream return variance and survival. Figures Figure 1. Comparison of fork length

ScholarsArchive@OSU

Carbon isotopes show snowpack acts as a valuable moisture subsidy to mountain forests in the Oregon Cascades

Changes in otolith morphology of juvenile chinook salmon (Onchorhynchus tshawytscha) in different hatchery rearing conditions

Inhibition of α-Amylase and α-Glucosidase by Bioflavonoids

The Inhibition of a-Amylase and a-Glucosidase by Bioflavonoids

Antibiotic Resistance Gene Transfer in Oysters as a Result of Fecal Pollution

A Panel of Histone H3 Mutations to Investigate Centromere Maintenance and Gene Silencing

Effects of Contemporary Forest Practices on Stream Nutrients, Temperature, and Periphyton in Small Headwater Streams

Light quality manipulation for the solvent extraction of phycocyanin from Oregon freshwater cyanobacteria

Controlled Orientation of Engineered Carbonic Anhydrase on a Surface : A Model for Protein Immobilization for Biosensors and Biomaterials

Changes in Otolith Shape in Juvenile Chinook Salmon in Different Hatchery Rearing Conditions

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