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Ethylbromo Acetate as an Olfactory Probe

Description: Olfactory transduction mechanisms are best studied when specific blocking agents are available with which to modify cellular responses to odorant stimulation. This study is an electrophysiological investigation of functional group-specific olfactory acceptor mechanisms using ethylbromo acetate (EtBrAc), a World War I war gas which inhibits olfactory responses to odorant stimulation. The major findings of this investigation show that (1) vaporous EtBrAc is found to be a quick and effective inhib… more
Date: August 1980
Creator: McClure, Fred Leland
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Effect of Colchicine on Neuronal Excitabilty

Description: The abundance of microtubules in receptive dendrites suggests they may function in sensory transduction. Responses of frog muscle spindle receptors and joint receptors is inhibited within 25 minutes by 50 mM colchicine, a microtubuledisrupting agent. The inhibition is reversible upon removal of colchicine, and the time course of recovery is comparable to that of inhibition. Frog olfactory responses are briefly inhibited by washing the olfactory mucosa with perfusion fluid. Colchicine accentuate… more
Date: August 1978
Creator: Okafo, Ngozi
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Effect of Calcium Channel Antagonists and Other Agents on Olfactory Reception

Description: The role of Ca++ in olfactory responses was investigated with inorganic and organic calcium channel antagonists. Electrophysiological responses to odorants were recorded from frog olfactory mucosa before and after aerosol application of different agents. Electroolfactogram responses were blocked by certain inorganic ions with the order of effectiveness Zn++ >Ln+++>Cd++>Ca++>Co++>Sr++>Mg++. Ba++ potentiated olfactory responses, and is known to potentiate calcium channel-mediated responses in oth… more
Date: August 1985
Creator: Rosick, Edward R. (Edward Rudolph)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Brain Activity in Rats Exposed to Short-Term External Electrical Fields

Description: The effects of external electric fields (EEF) on brain activity in anesthetized rats were studied. The field strengths used, 9 kV/m and 5 kV/m, both D.C. and A.C. (60Hz) were in the range of those measured beneath current overhead transmission lines. Brain activity was monitored from surface electrodes and from electrodes stereotaxically implanted in the posterior-lateral portion of the hypothalamus. It was found that 9 kV/m and 5 kV/m EEF's both D.C. and A.C. brought about statistically signif… more
Date: May 1985
Creator: Hines, Gregory M. (Gregory Manuel)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Effect of Intermediate Filament Inhibitors on Steroidogenesis and Cytoskeleton in Y-1 Mouse Adrenal Tumor Cells

Description: When Y-1 mouse adrenal tumor cells were treated with sodium orthovanadate, an intermediate filament (IF) inhibitor in BHK21-F cells, there was no change in the amount of 20α-dihydroprogesterone produced. A neurofilament inhibitor, β, β'-iminodipropionitrile (IDPN), enhanced the ability of Y-1 cells to produce steroid in response to ACTH by acting on the plasma membrane. Electron microscopy of Y-1 cells extracted with Triton X-100 revealed that both vanadate and IDPN caused the aggregation of cy… more
Date: August 1982
Creator: Lee, Hyun Sook
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Neuroregulation and Myosin Light Chain Phosphorylation in Ascaris Suum Obliquely Striated Skeletal Muscle

Description: Extraction and quantitation of myosin light chain two coupled with myograph recordings from Ascaris muscle perfused with calmodulin inhibitors and neurotransmitters in conjunction with their respective agonists and antagonists have been used to establish the regulation of contraction in this muscle. Densitometric tracings of isolectric focusing gels separating the regulatory light chain were used to quantitate phosphorylation in resting, contracted and flaccid muscle. These studies indicated th… more
Date: August 1985
Creator: Martin, Rex E. (Rex Edward)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Thyroid Ultrastructural Changes Induced by Hypothermia

Description: Investigations have shown that the hypothalamus and pituitary respond to decreases in body temperature by stimulating the thyroid gland to release T3 and T4 hormones. This study was designed to investigate ultrastructural changes of the thyroid gland induced by hypothermia. The ultrastructural changes produces by stimulation by Thyroid Stimulating Hormone were also examined as an adjunct to the hypothermic stimulation of the gland. There was a significant increase in microvilli on the luminal b… more
Date: August 1979
Creator: Kent, James Simpson
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Effects of Hypothermia on the Release of Cardiac Enzymes

Description: The myocardium is known to release CPK, LDH1 , and GOT in response to ischemia as a result of myocardial infarction. This study was designed to induce the release of cardiac enzymes without adversely effecting the myocardium by perfusion hypothermia, thereby suggesting that these enzymes are not as specific in the diagnosis of myocardial infarction as once thought. Hypothermia was by in vivo perfusion of the left anterior descending coronary artery. Enzyme activity was measured from sera sample… more
Date: August 1977
Creator: Strawn, William B.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Effects of Oat Fiber and Corn Bran on Blood Serum Cholesterol and Triglyceride Levels

Description: Forty Sprague Dawley rats were randomly placed in five groups with eight rats per group. Each group varied in dietary composition for fiber type and carbohydrate source. Groups one and two received oat fiber and either sucrose or corn starch as the carbohydrate source. Groups three and four received corn bran as the fiber source and either sucrose or corn starch as the carbohydrate source. Group five (considered the control group), received Purina standard rat chow. Analysis of variance showed … more
Date: August 1985
Creator: Broeder, Craig E. (Craig Elliot)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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No Apparent Reason

Description: This paper discusses five works the author created and the thought process that went into the creation of these works. Helen Altman discusses the fascination with temporary or process pieces and the use of commonplace materials to depict a message.
Date: August 1989
Creator: Altman, Helen
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Effect of Operant Behavior on the Metabolism of 5-Hydroxytryptamine

Description: The role of operant behavior in the metabolism of brain 5-hydroxytryptamine (5-HT) turnover was investigated. Two and one-half hours following the administration of 150 mg/kg of para-chlorophenylalanine (PCPA), a specific inhibitor of tryptophan hydroxylase, levels of 5-HT were compared in sedentary and performing rats. Whole brain levels of serotonin were reduced in both responding and sedentary animals; however, differences between these groups were not statistically significant. The drug ind… more
Date: August 1979
Creator: Shepard, Paul
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Serotonin, Norepinephrine, and the Hypothalamic Ventromedial Nucleus: a Proposed Mechanism Mediating Hyperphagia and Obesity

Description: Serotonin has been implicated as a modulator of feeding behavior. This experiment was designed to alter brain serotonin levels through dietary means in hypothalamic ventromedial-lesioned and unlesioned rats. Daily food, water, and animal weights were measured. The purpose was to determine if VMH lesions altered the feeding pattern found in unlesioned rats. Although food intake for tryptophanenriched diets and tryptophan-deficient diets did not differ from their respective control groups, in som… more
Date: May 1981
Creator: McDermott, Kathy Howard
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Mast Cells in the Brains of Mice of Different Genotypes: A Histological Study

Description: Histamine is present in the central nervous system and is believed to be derived from neurons (50 percent) and mast cells (50 percent). This experiment was designed to analyze histologically the numbers and distribution of brain-associated mast cells in normal (+/+), mast cell deficient (W/W^v) and heterozygote (W/+, W^v/+) mice of the WBB6F_1 /J strain. Significant variations in the number and distribution of mast cells between the various genotypes were found. Based on the results, a hypothes… more
Date: May 1983
Creator: Dolce, Angela Kay
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Role of Calcium and Phospholipids in Transepithelial Sodium Ion and Water Transport in Amphibian Epithelia

Description: The present investigation is concerned with determining the role of calcium, phospholipids, and phospholipid metabolites on transepithelial sodium and water transport in response to antidiuretic hormone (ADH). These studies utilize the frog skin for determining sodium transport and amphibian urinary bladder for water flow measurements and scanning electron microscopy of cell surface morphology. The results demonstrate that phospholipids and phospholipid metabolites containing arachidonic acid s… more
Date: August 1983
Creator: Tarapoom, Nimman
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Unification of Clay and Steel in the Representation of Machined Forms From My Past

Description: This paper discusses the author's art works, which involved the integration of clay and steal to create sculptures of pipe forms similar to the machined forms they worked with in the agriculture and oil industries. Vicente García discusses the methodology of creation and analyzes the works.
Date: May 1993
Creator: García, Vicente
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Visual Study of Folk Art Death Imagery Used During the Day of the Dead Celebration in Mexico

Description: This paper discusses the author's work creating five collagraph prints based on imagery used during the Mexican Day of the Dead celebration and the process of making these prints. Eduardo J. Garcia discusses how heritage impacted these works and explores the meaning behind the folk art imagery.
Date: December 1994
Creator: Garcia, Eduardo J.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Imagery and Form

Description: This paper discusses the integration of imagery and form in the author's works, wheel thrown pottery intended to make an individualized statement. Steven L. Phillips discusses the process of making these forms and the imagery they contain, drawing connections to philosophical concepts.
Date: May 1994
Creator: Phillips, Steven L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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One by One

Description: This paper describes the depiction of Colorado animals and their environments through earthenware. Laura Newby describes the process and inspirations behind the pieces and describes each one in turn.
Date: August 1996
Creator: Newby, Laura
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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