Index Catalog // ScholarsArchive@OSU

Investigating physical drivers of phytoplankton bloom initiation in the Northern Gulf of Alaska

Creator:: Ballantine, Kaleigh
Abstract:: The spring bloom is a key oceanic phenomenon in the Northern Gulf of Alaska (NGA), where it supports the regional ecosystem, fisheries, and CO2 sequestration. Despite its significance, mechanisms that trigger NGA blooms are still debated, largely due to a lack of sufficient data from late winter through spring. New...
Resource Type:: Honors College Thesis
Full Text:: Ocean Sciences _____________________________________________________________________ Rachel Potter

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

Creator:: Denman, Carmen C.
Abstract:: Microbial activity within elevated CO2 and oxygen depleted environments changes with density driven stratification overturn in the seasonally anoxic region of Devil’s Hole, Bermuda. The temperature gradient developed during the summer months creates a natural laboratory to study bacterial and virus population density and microbial community dynamics in the anoxic...
Resource Type:: Honors College Thesis
Full Text:: Acknowledgements Thanks to the guidance and project creation and motivation from mentor Rachel Parsons (BIOS

0An assessment of the oviposition behavior of spotted-wing drosophila (Drosophila suzukii) in the presence of a novel management tool in Pinot noir grapes

Creator:: Blood, Rachel A.
Abstract:: Spotted-wing drosophila (SWD, Drosophila suzukii) is an invasive fruit fly species native of Southeast Asia. In vineyards, SWD lays eggs in damaged and intact fruit of the most soft-skinned varieties, and feeds on damaged fruits during the harvest period. Feeding and oviposition activities increase the likelihood of vectoring spoilage bacteria,...
Resource Type:: Honors College Thesis
Full Text:: Rachel Ann Blood A THESIS submitted to Oregon State

Advanced Solvent Purification Process Design using Aspen HYSYS and Feasibility Studies

Creator:: Meeuwsen, Rachel M.
Abstract:: High purity isopropyl alcohol (IPA) is utilized in silicon wafer manufacturing in cleaning and drying processes. With the ever-decreasing die size, there is an increased need for even higher purity chemicals. This process was designed to further purify a 250,000 lbs/month stream high purity isopropyl alcohol stream for use in...
Resource Type:: Honors College Thesis
Full Text:: Aspen HYSYS and Feasibility Studies by Rachel Meeuwsen A THESIS

Comparison of Canine Spermatozoa Motility, Morphology, and RNA Integrity Using Three Different Cell Purification Solutions

Creator:: Hegedus, Rachel M.
Abstract:: Transcriptome gene expression studies of sperm RNA have been utilized in a variety of different species to investigate causes of male infertility. Previous research investigators have optimized cell separation and RNA isolation techniques for each species of interest. To date, no study has been completed for dogs. The objective of...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Rachel M

Developing a Qualitative Assessment Instrument to Measure Conceptualization of Oppression and Privilege

Creator:: Johnson, Rachel M.
Abstract:: An understanding of oppression and privilege would improve engineering climates and encourage individuals with marginalized identities to stay engaged in engineering spaces. Currently there are quantitative tools to assess cultural competencies, but none that measure understandings of power relationships. This project aims to create a qualitative assessment instrument to measure...
Resource Type:: Honors College Thesis
Full Text:: Qualitative Assessment Instrument to Measure Conceptualization of Oppression and Privilege by Rachel

Low-frequency Teleseismic and Infrasound Arrivals along the Dense Corvallis Nodal Array

Creator:: Way, Rachel
Abstract:: The dense Corvallis array deployed in January of 2022 aided in the high-resolution study of local geology. This array was made of 177 SmartSolo 3-component 5 Hz geophones around Corvallis, with a 93 geophone profile going west towards Bald Hill for approximately 5 km at an average of 64 m...
Resource Type:: Honors College Thesis
Full Text:: the Dense Corvallis Nodal Array by Rachel Way A THESIS submitted to Oregon

Light Backscatter: Shedding New Light on Milk Coagulation

Creator:: Miller, Rachel A.
Abstract:: Milk collected from individual cows (n= 31) was centrifuged to equalize fat composition and was tested during chymosin-induced coagulation to compare the influences of somatic cell level, breed, parity, protein composition, and lactation stage on coagulation rate. Coagulation rate was determined using diffuse reflectance. Pearson correlation coefficients were calculated for...
Resource Type:: Honors College Thesis
Full Text:: 31 AN ABSTRACT OF THE THESIS OF Rachel A

Development of Two-Color Laser Induced Fluorescence Fluid Temperature Imaging for Free Convection Heat Transfer Applications

Creator:: McAfee, Rachel C.
Abstract:: The development of a continuous and reliable cooling method for computer chips is an evolving subject requiring continuous research in both computer science and thermal management. Two-dye laser induced fluorescence (LIF) provides a minimally invasive way to investigate electronics cooling fluid behavior. Dielectric fluids are of particular interest as they...
Resource Type:: Honors College Thesis
Full Text:: Fluid Temperature Imaging for Free Convection Heat Transfer Applications by Rachel McAfee

Analysis of Organochlorine Pesticides (OCPs) in Gray Whale Scat as an Alternative Method of Toxicant Quantification in Cetaceans

Creator:: Kutnerian, Amy M.
Abstract:: A method was developed to quantify organochlorine pesticides in whale scat. This method would ideally replace analysis of pesticides in blood and tissue samples, which are difficult to acquire. Scat samples were collected from one stranded gray whale and three live whales. The samples were extracted with pressurized liquid extraction,...
Resource Type:: Honors College Thesis
Full Text:: was Rachel Carson’s Silent Spring, which detailed the long-term effects of pollutant exposure

ScholarsArchive@OSU

Investigating physical drivers of phytoplankton bloom initiation in the Northern Gulf of Alaska

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

0An assessment of the oviposition behavior of spotted-wing drosophila (Drosophila suzukii) in the presence of a novel management tool in Pinot noir grapes

Advanced Solvent Purification Process Design using Aspen HYSYS and Feasibility Studies

Comparison of Canine Spermatozoa Motility, Morphology, and RNA Integrity Using Three Different Cell Purification Solutions

Developing a Qualitative Assessment Instrument to Measure Conceptualization of Oppression and Privilege

Low-frequency Teleseismic and Infrasound Arrivals along the Dense Corvallis Nodal Array

Light Backscatter: Shedding New Light on Milk Coagulation

Development of Two-Color Laser Induced Fluorescence Fluid Temperature Imaging for Free Convection Heat Transfer Applications

Analysis of Organochlorine Pesticides (OCPs) in Gray Whale Scat as an Alternative Method of Toxicant Quantification in Cetaceans

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