Index Catalog // ScholarsArchive@OSU

Photosynthetic Energy Allocation Strategies of Thalassiosira pseudonana During Light Limited Growth

Creator:: Fisher, Nerissa L.
Abstract:: Photosynthetic energy allocation strategies were investigated in the marine diatom, Thalassiosira pseudonana, grown under a wide range of light limitation. Steady-state, continuous cultures were established at three light-limited growth rates. Simultaneous measurements of photosynthetic activity were made that targeted different points in photosynthetic energy flow from gross to net photosynthesis....
Resource Type:: Masters Thesis
Full Text:: summary, the nuclear genome contained 34 million base pairs composed of 24 diploid chromosomes, the

Novel Experimental Designs and Mathematical Models to Study Fecal Indicator Bacteria Persistence in Surface Water

Creator:: Brooks, Lauren
Abstract:: High counts of fecal indicators, used to signal the potential presence of pathogens associated with untreated waste, result in the classification of water bodies throughout the United States as impaired. Nonpoint sources of unknown origin that contribute to fecal contamination make management of impaired waters challenging, as they are difficult...
Resource Type:: Dissertation
Full Text:: decay, studies using ruminant sources of fecal material are underrepresented in the available data

Factors affecting the Ceratomyxa shasta infectious cycle and transmission between polychaete and salmonid hosts

Creator:: Bjork, Sarah J.
Abstract:: Ceratomyxa shasta is a myxozoan parasite that infects salmonid fishes causing the disease ceratomyxosis that is characterized by severe hemorrhage and necrosis of the intestine and death of the fish host. Ceratomyxa shasta is endemic to the Pacific Northwestern United States and Canada, where epizootics are reported for both wild...
Resource Type:: Dissertation
Full Text:: immunological techniques. Journal of Fish Diseases 12, 509-522. Bartholomew, J.L., Whipple, M.J., Stevens

Transcriptome Responses of the Nitrifying Bacteria Nitrosomonas europaea and Nitrobacter hamburgensis to Low Oxygen

Creator:: Dobie, Michael
Abstract:: Nitrification is the process within the global Nitrogen Cycle where ammonia (NH3) is oxidized to nitrate (NO₃⁻) and can be carried out by two distinct groups of bacteria. The ammonia-oxidizing bacteria (AOB) first oxidize NH₃ to nitrite (NO₂⁻), and second, the nitrite-oxidizing bacteria (NOB) oxidize NO₂⁻ to NO₃⁻. In aerobic...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF AN ABSTRACT OF THE

Bacterial Predation in Host Microbiomes

Creator:: Welsh, Rory M.
Abstract:: In host-associated microbiomes, the mechanisms that regulate community composition or the principles that govern dynamics remain far from clear. However, understanding how the structure of microbial communities shift as the system moves away from a healthy state is critical to assessing disease progression and to formulate any potential mitigation strategy....
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Rory M. Welsh for the degree of Doctor of Philosophy in

A comparative study of fish coloration and toxicant responses in a chromatophore cell-based biosensor

Creator:: Roach, Holly B.
Abstract:: Detection of both biological and chemical environmental toxicants is essential in the assessment of risk to human health. Cell-based biosensors are capable of activity- based detection of toxicity. Chromatophore cells, responsible for the pigmentation of poikilothermic animal, have shown immense potential as cell-based biosensors in the detection of a broad...
Resource Type:: Masters Thesis
Full Text:: the scattering of all wavelengths by the whitish material within them (76). 5 Iridophore cells

Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

Creator:: De Lorme, Marthah J. M.
Abstract:: 2,4,6-Trinitrotoluene (TNT) has been the common munitions used in the world and is an environmental contaminant that is amendable to reductive transformation reactions. The rumen is an extremely reductive environment containing diverse microbial populations. There are 21 pure culture ruminal bacteria species in culture collection, these were tested for the...
Resource Type:: Dissertation
Full Text:: nitro groups and binding of the metabolites to humic material. Transformation of TNT is via

Survival and persistence of Bacteroidales human and ruminant specific fecal markers and occurrence with fecal pathogens

Creator:: Walters, Sarah P.
Abstract:: Aquatic fecal contamination from non-point sources impairs environmental health and serves as a vehicle for transmission of waterborne disease, resulting in economic losses worldwide. Accurate methods of diagnosing fecal pollution and its source are needed to prevent human exposure, remediate pollution, and reduce economic impacts. In order to obtain this...
Resource Type:: Dissertation
Full Text:: OF THE DISSERTATION OF Sarah P. Walters for the degree of Doctor of Philosophy in

Immunohistochemistry Studies of Tumor Necrosis Factor Αlpha and Interferon Gamma Expression in Pseudocapillaria tomentosa Infected and Uninfected Zebrafish

Creator:: Lo, Lalee C.
Abstract:: Tumor necrosis factor alpha (TNF α) and interferon gamma (IFN γ) were initially recognized as inflammatory mediators produced by immune cells in response to infectious agents or foreign material. (1,5) However, over the past decade much research in mammalian species has indicated that these proteins also play key roles in...
Resource Type:: Presentation and Undergraduate Thesis
Full Text:: TNF α and IFN γ. MATERIALS AND METHODS Zebrafish We maintained a tank of parasite donor fish holding

The role of costimulation and adjuvants in the development of T cell effector and memory responses

Creator:: Maxwell, Joseph R.
Abstract:: T cells are one of the key cells in the immune system. Although they are not the first line of defense against a pathogen, their functions can greatly enhance the phagocytosis and destruction of pathogens as well as the development of antibody responses. Furthermore, even when responding T cells have...
Resource Type:: Dissertation
Full Text:: the manuscripts in chapters 2 and 3 for publication. Thanks also to The Journal of Immunology for

ScholarsArchive@OSU

Photosynthetic Energy Allocation Strategies of Thalassiosira pseudonana During Light Limited Growth

Novel Experimental Designs and Mathematical Models to Study Fecal Indicator Bacteria Persistence in Surface Water

Factors affecting the Ceratomyxa shasta infectious cycle and transmission between polychaete and salmonid hosts

Transcriptome Responses of the Nitrifying Bacteria Nitrosomonas europaea and Nitrobacter hamburgensis to Low Oxygen

Bacterial Predation in Host Microbiomes

A comparative study of fish coloration and toxicant responses in a chromatophore cell-based biosensor

Biotransformation of 2,4,6-trinitrotoluene by ruminal organisms

Survival and persistence of Bacteroidales human and ruminant specific fecal markers and occurrence with fecal pathogens

Immunohistochemistry Studies of Tumor Necrosis Factor Αlpha and Interferon Gamma Expression in Pseudocapillaria tomentosa Infected and Uninfected Zebrafish

The role of costimulation and adjuvants in the development of T cell effector and memory responses

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