Index Catalog // ScholarsArchive@OSU

The effects of atrazine on growth of flax (Linum usitatissimum L.) plants and on yield, chemical composition and germination of flax seeds

Creator:: Locatelli, Eduardo Atilio
Abstract:: Reports of previous research indicated a stimulatory effect of triazine herbicides on growth, yield and protein content of plants and seeds of various species. Studies were conducted in the greenhouse, laboratory and field to investigate the effects of atrazine (2-chloro-4-ethylamino-6-a sopropylarnino- s-triazine) on growth, yield, seed composition, and seed germination...
Resource Type:: Masters Thesis
Full Text:: Reports of previous research indicated a stimulatory effect of triazine herbicides on growth, yield and

Individual and demographic responses of the gray-tailed Vole (Microtus canicaudus) to an endocrine disruptor

Creator:: Caslin, Tracie M.
Abstract:: In an experimental field study, populations of gray-tailed voles (Microtus canicaudus) were exposed to a commercial formulation of vinclozolin, a fungicide effective for disease control on ornamental plants, turf grasses, and fruits and vegetables. Vinclozolin has been shown in laboratory experiments to behave as an androgen antagonist, impairing the reproductive...
Resource Type:: Masters Thesis
Full Text:: with one application of Curalan® fungicide, Vinclozolin had only a slight effect on the reproductive

Developmental axial skeletal deformities : baseline study with a zebrafish model

Creator:: Harden, Jon M.
Abstract:: The aim of this study was to assess sensitivity of early life stage zebrafish to cadmium (Cd). Embryos and larva were exposed to Cd before the formation of skeletal elements. Exposure times were selected to determine whether Cd perturbed developmental processes that lead to skeletal deformities, and to characterize the...
Resource Type:: Masters Thesis
Full Text:: . There was no effect of Cd on incidence of any type of skeletal deformity at 4Odpf(P>O.05 and p>O.O5

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

Creator:: Stone, Steven L.
Resource Type:: Masters Thesis
Full Text:: discriminate between stressed and unstressed conspecifics solely on the basis of chemical stimuli. In a two

Soil pH and calcium effects on nodulation of nursery grown red alder

Creator:: Crannell, Wanda K.
Resource Type:: Masters Thesis
Full Text:: ., 1985). The effect of increased bases in the soil surface layers on subsequent nodulation is often

Effects of chlorinated aliphatic hydrocarbon degradation on the metabolic enzymes in Nitrosomonas europaea

Creator:: Fawcett, Kimberly A.
Abstract:: The toxic effects of degrading the chlorinated hydrocarbons trichloroethylene (TCE), chloroform (CF) and cis-1,2-dichloroethylene (cis-1,2-DCE) were studied in the bacterium Nitrosomonas europaea. N europaea is an ammonia-oxidizing bacterium that obtains all of its energy from the oxidation of ammonia to nitrite. This metabolic process involves two enzymes, ammonia monooxygenase (AMO)...
Resource Type:: Masters Thesis
Full Text:: polypeptide and in vitro HA() activity 30 2. The effect of light and H202 on N} and N2H4 dependent 02

Alteration of cholesterol disposition by chlordecone is not explained by induction of cyp7a or cyp4a1

Creator:: Lee, JungA
Abstract:: Liver X receptor (LXR), farnesoid X receptor (FXR) and peroxisome proliferator-activated receptor (PPAR) are adopted orphan nuclear receptors that function as lipid sensors. These receptors respond to cellular lipid levels and regulate the expression of target gene. Previously, it was demonstrated that low doses of chlordecone (CD) pretreatment disturbed exogenous...
Resource Type:: Masters Thesis
Full Text:: ). There was no significant effect of CD treatment on liver-to-body weight ratio calculated as liver

Effects of atrazine on olfactory-mediated behaviors in Pacific lamprey (Entosphenus tridentatus)

Creator:: Smith, April G.
Abstract:: Pacific lamprey (Entosphenus tridentatus) are experiencing population declines throughout their range. Xenobiotics could be an important risk factor for lamprey populations. Our goal was to establish if common herbicides, as used in forest management, could affect reproductive fitness. We determined that atrazine was a likely compound of greatest concern to...
Resource Type:: Masters Thesis
Full Text:: goal of this research is to determine if atrazine has an effect on the ability of Pacific lamprey to

Effect of xenoestrogen exposure on the expression of cytochrome P450 isoforms in rainbow trout liver

Creator:: Intharapanith, Sirinmas
Resource Type:: Masters Thesis
Full Text:: metabolites formed by liver microsomes from each treatment 50 23. Effect of chemical treatments on plasma

Effect of dietary fluoride on selenite toxicity in the rat

Creator:: Yu, Qing, 1966-
Abstract:: Two factorial experiments were conducted to determine if high dietary fluoride would inhibit selenite toxicity in rats. In each study, two levels of selenite (0.05 and 5 mg/kg diet) were matched against two levels of fluoride (1 and 150 mg/kg diet) for either 6 or 8 weeks. Fluoride failed to...
Resource Type:: Masters Thesis
Full Text:: of Science in Nutrition and Food Management presented on January 28, 1992. Title: Effect of

Chilling requirement affects plant response to hydrogen cyanamide in apple cultivars

Creator:: Ghariani, Karim
Abstract:: Chilling requirements of 43 apple and 38 pear cultivars were estimated over a 2 year period by cutting shoots in the field at weekly intervals and forcing them in a warm greenhouse for 4 weeks. For apples, the mean values ranged from 490 Chill Units (CU) +- 1 for 'Dorsett...
Resource Type:: Masters Thesis
Full Text:: to hydrogen cyanamide depends on several factors: concentration of the chemical, time of

Environmental contaminants and breeding biology of great blue herons in the Columbia River Basin

Creator:: Thomas, Carmen M.
Abstract:: Great blue heron (Ardea herodias) eggs and prey items were collected from six colonies on the Columbia and Willamette rivers and Puget Sound during 1994-95. Contaminant concentrations, reproductive success, and biomagnification factors (BMFs) were determined and effects of residue levels were measured by H4IIE rat hepatoma and ethoxyresorufin-O-dealkylase (EROD) bioassays....
Resource Type:: Masters Thesis
Full Text:: Master of Science in Wildlife Science presented on May 27. 1997. Title: Environmental Contaminants and

Blood-based gene expression as a biodosimetry model for neuroblastoma patients treated with ¹³¹I-mIBG

Creator:: Edmondson, David A.
Abstract:: Internal dosimetry is challenging and relies on estimates using MIRD or ICRP biokinetic models. To address this, we looked at gene expression analysis in whole blood from radiotherapy patients. Patients with relapsed or refractory neuroblastoma who received ¹³¹I-mIBG at UCSF were used to correlate internal ionizing radiation (IR) dose with...
Resource Type:: Masters Thesis
Full Text:: David A. Edmondson for the degree of Master of Science in Radiation Health Physics presented on June 26

Bioaccumulation of dietary 2,2',4,4',5,5'-hexachlorobiphenyl and induction of hepatic aryl hydrocarbon hydroxylase in rainbow trout (oncorhynchus mykiss)

Creator:: da Costa, Emmanuel G.
Resource Type:: Masters Thesis
Full Text:: presented on July 20, 1994 Title: Bioaccumulation of Dietary 2,2',4,4',5,5'-Hexachlorobiphenyl and

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:: . Roach for the degree of Master of Science in Microbiology presented on March 9, 2012. Title: A

Physical and chemical factors controlling the distribution of the major phytoplankton classes at the Antarctic Polar Front, 170 °W

Creator:: Mengelt, Claudia
Abstract:: This study was part of the Antarctic Environment and Southern Ocean Study (AESOPS) program, whose main goal was to investigate the role of the biota in the carbon flux from the atmosphere to the interior of the ocean. We quantified the abundance of the major phytoplankton classes and examined the...
Resource Type:: Masters Thesis
Full Text:: Mengelt for the degree of Master of Science in Oceanography presented on August 25, 2000. Title

Development of a progeny marker for steelhead

Creator:: Shippentower, Gene E.
Abstract:: This study was undertaken to determine if strontium chloride could be used to create a trans-generational otolith mark in steelhead (Oncorhynchus mykiss). I completed two strontium injection trials and a survey of juvenile steelhead from various steelhead hatcheries. The two trials measured Sr:Ca ratios in otoliths in response to injections...
Resource Type:: Masters Thesis
Full Text:: assessed the effect of treatment on the survival and growth of progeny from treated females. Finally, I

Size and surface area dependent toxicity of silver nanoparticles in zebrafish embryos (Danio rerio)

Creator:: Tuttle, George R.
Abstract:: Many studies addressing the toxicity of silver nanomaterials have found that smaller sized silver nanoparticles are usually more toxic to organisms and in cell culture than particles of larger sizes yet it is not entirely clear why. We investigated the size dependent toxicity of silver nanoparticles by measuring the response...
Resource Type:: Masters Thesis
Full Text:: 3.3 Effect of the Chorion on Embryo Toxicity……………………………………………………... 21 TABLE

Assessment of fluorinated chemicals (FCs) on developmental toxicity in embryonic zebrafish

Creator:: Duong, Lisa
Abstract:: Fluorinated chemicals (FCs) have been used since the 1950s in many industrial and commercial applications because of their unique properties such as chemical inertness, resistance to heat and their ability to repel water and oils. Concerns regarding potential environmental or human health risk from FCs exposure have emerged due to...
Resource Type:: Masters Thesis
Full Text:: LIST OF APPENDICES Appendices Page A Chemical data on fluorinated chemicals

Antioxidant enzyme response in rainbow trout (Oncorhynchus mykiss) after subchronic exposure to an environmentally-relevant polycyclic aromatic hydrocarbon mixture

Creator:: Norby, Tyler S.
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are significant pollutants in aquatic environments. Many are carcinogenic and lead to DNA fragmentation and adduct formation in marine and freshwater organisms. Previous research demonstrates that rainbow trout (Oncorhynchus mykiss) compensate to long-term PAH dietary exposures and reduce the DNA damage. The aim of this study...
Resource Type:: Masters Thesis
Full Text:: previous research, there was no significant (P > 0.05) effect on body weight of the fish in any of the

Agricultural impacts on amphibian survival, growth, and distributions

Creator:: Baker, Nick J.
Abstract:: The potential impact of chemical contaminants and conservation practices on amphibians in agricultural landscapes is a key research topic globally. Amphibians represent a common group in many freshwater systems and are currently experiencing worldwide population declines. Global amphibian declines may be attributed to a number of causes, including habitat loss,...
Resource Type:: Masters Thesis
Full Text:: pesticides and fertilizer chemical classes on survival……........ 61 3.3 Effect of pesticides and fertilizers

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