Index Catalog // ScholarsArchive@OSU

The Mathematics of Critical Shifts in Ecological Networks with Alternative Stable State Theory, A Potential Framework for Early Warning Indicators

Creator:: Kupperman, Michael D.
Abstract:: A long running problem in mathematical biology is the prediction of extinction events, a specialized case of the larger global stability problem found in differential equations and dynamical systems theory. A central technical question is how to introduce the randomness observed in real ecological systems not accounted for in deterministic...
Resource Type:: Honors College Thesis
Full Text:: , Definition 2.1.2.2 (Monoid). A monoid M is a tuple (S,+), where S is a set and + : S × S → S is a binary

Abiotic and biotic predictors of coastal giant salamander (Dicamptodon tenebrosus) in headwaters of the Oregon Coast Range

Creator:: Neal, Nathaniel G.
Abstract:: From British Columbia to northern California, coastal giant salamanders (Dicamptodon tenebrosus) are a dominant vertebrate predator in headwater streams. Though widespread, salamander health and abundance levels differ greatly between locations, provoking the question as to what factors may influence this variation and whether habitat features or biotic variables play a...
Resource Type:: Honors College Thesis
Full Text:: collected over a 200 m to 300 m reach in each stream with vertebrate surveys, large woody debris, pool

Interaction of the human Voltage-Dependent Anion Channel 1 protein (VDAC-1) with Mycobacterium avium and its role in bacterial survival within phagocytic cells

Creator:: Pham, Tuan
Abstract:: M. avium is an opportunistic pathogen that primarily infects macrophages. In order to survive within the macrophage, M. avium secretes proteins into the host cell cytoplasm to inhibit specific functions such as phagosome acidification, altering pathways as well as initiating apoptosis. However, little is known about how those secreted proteins...
Resource Type:: Honors College Thesis
Full Text:: Bermudez Abstract M. avium is an opportunistic pathogen that primarily infects macrophages. In

Exposure to the Mycotoxin Zearalenone Impairs Embryonic Development in Zebrafish

Creator:: Sidebotham, Nicole A.
Abstract:: A study was conducted to evaluate the developmental toxicity of three commonly detected mycotoxins in food (deoxynivalenol, patulin, and zearalenone) using the zebrafish (Danio rerio) model. Mycotoxin exposures were carried out at five concentrations (0.0064, 0.064, 0.64, 6.4, and 64 μM). Morphological and photomotor screenings were conducted at 24 hours...
Resource Type:: Honors College Thesis
Full Text:: , Brion Francois et. al. (2012) Selective Activation of Zebrafish Estrogen Receptor Subtypes by

Songbird feathers as indicators of mercury exposure : Patterns across feather tracts and correlations to other tissues

Creator:: Low, Katherine E.
Abstract:: Monitoring mercury (Hg) exposure in avian populations is critical to understanding the effects of this neurotoxin. Avian Hg exposure is commonly evaluated by measuring Hg concentrations in internal tissues, blood, and feathers. Feathers are a popular sampling matrix due to ease of sampling and limited stress to birds. However, it...
Resource Type:: Honors College Thesis
Full Text:: . 2002, Morel et al. 1998). Rapid, but temporary, influxes in atmospheric Hg naturally occur through

Elucidating patterns of fungal epiphyte and endophyte growth on a variety of carbon substrates

Creator:: Thapliyal, Mrinal
Abstract:: Coastal Douglas-fir (Pseudotsuga menziesii var. menziesii), a keystone species in the Pacific Northwest, relies on symbioses with microorganisms to obtain nutrients, potentially defend against pathogens, and perform a variety of other tasks. Two of the tree’s primary fungal symbionts are foliar epiphytes and endophytes, which reside on the exterior or...
Resource Type:: Honors College Thesis
Full Text:: Wickham, H., Averick, M., Bryan, J., Chang, W., McGowan, L., François, R., Grolemund, G., Hayes, A

Exploring phylogeny of Rhodococcus fascians isolates using 16S ribosomal DNA sequence analysis

Creator:: Sandberg, Eva Song
Abstract:: Rhodococcus fascians is a Gram-positive, pleiomorphic actinomycete that causes leafy gall formation in a wide range of plant hosts. This particular phytopathogen has been a focus of research at the Oregon State University Plant Clinic, a diagnostic laboratory. Phylogeny of R. fascians isolates obtained from Plant Clinic submissions was determined...
Resource Type:: Honors College Thesis
Full Text:: . Computer Applications in the Biosciences 12: 357-358. 17. Pei, Z., E. Bini, L. Yang, M. Zhou, F. Francois

Synthesis and Solution Behavior of Tetravalent Metal Clusters with Ammonium Counterions

Creator:: Brown, Jessica C.
Abstract:: Global interest in reducing carbon emissions by use of alternative energy sources makes nuclear energy production and the impacts of the nuclear energy cycle relevant. Studying the aqueous speciation of tetravalent metals commonly used for nuclear energy (uranium, thorium, plutonium) can inform us of general metal properties and their behavior...
Resource Type:: Honors College Thesis
Full Text:: . Metal (IV) Sulfate (M) Conc. (NH4)2SO4 (M) 1-2 Th-6, Th-6 chains 0.417** 1.14 3-4 U-6, U-6

Introduction of a Mathematical Model to Characterize Relative Risk of Snakebite Envenoming, a Neglected Tropical Disease

Creator:: Kim, Soyeon
Abstract:: Snakebite envenoming is a neglected tropical disease that has received increased research attention in the past few years. However, snakebite prevalence and impact in India has been a neglected area of study, despite the high disease burden in this region. Both qualitative and quantitative approaches to studying snakebite processes are...
Resource Type:: Honors College Thesis
Full Text:: Saluba, Kuch, Ulrich, & Chappuis, François. 2010. Snake bite in South Asia: a review. PLoS neglected

Choose native plants that will help Oregon bee populations thrive in changing urban environments

Creator:: Asselin, Kelley
Abstract:: Bees play a crucial role in pollinating crops, supporting biodiversity, and maintaining ecosystem health. Despite their importance, the decline in bee populations has become a global concern due to various factors including habitat loss, urbanization, and climate change. The purpose of this thesis is to write an article that highlights...
Resource Type:: Honors College Thesis

ScholarsArchive@OSU

The Mathematics of Critical Shifts in Ecological Networks with Alternative Stable State Theory, A Potential Framework for Early Warning Indicators

Abiotic and biotic predictors of coastal giant salamander (Dicamptodon tenebrosus) in headwaters of the Oregon Coast Range

Interaction of the human Voltage-Dependent Anion Channel 1 protein (VDAC-1) with Mycobacterium avium and its role in bacterial survival within phagocytic cells

Exposure to the Mycotoxin Zearalenone Impairs Embryonic Development in Zebrafish

Songbird feathers as indicators of mercury exposure : Patterns across feather tracts and correlations to other tissues

Elucidating patterns of fungal epiphyte and endophyte growth on a variety of carbon substrates

Exploring phylogeny of Rhodococcus fascians isolates using 16S ribosomal DNA sequence analysis

Synthesis and Solution Behavior of Tetravalent Metal Clusters with Ammonium Counterions

Introduction of a Mathematical Model to Characterize Relative Risk of Snakebite Envenoming, a Neglected Tropical Disease

Choose native plants that will help Oregon bee populations thrive in changing urban environments

Limit your search

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search