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  Partner: UNT Libraries
 Department: Department of Biology
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
The Effect of Aging on the Respiratory Response of Rat Heart Tissue Slices to Metabolic Inhibitors

The Effect of Aging on the Respiratory Response of Rat Heart Tissue Slices to Metabolic Inhibitors

Date: August 1962
Creator: Couch, Ernest F.
Description: This investigation was undertaken to explore biochemical changes which may occur in heart tissue with age. In this connection, the cellular enzymes were of special interest.
Contributing Partner: UNT Libraries
The Effect of Avidin Injected Intraperitoneally on the Course of Leukemia in the Mouse

The Effect of Avidin Injected Intraperitoneally on the Course of Leukemia in the Mouse

Date: January 1961
Creator: Jones, George Adams, III
Description: The current work was undertaken to test the ability of avidin to affect the course of leukemia when administered intraperitoneally.
Contributing Partner: UNT Libraries
The Effect of Carbon Monoxide on the Growth of an Aquatic Streptomycete

The Effect of Carbon Monoxide on the Growth of an Aquatic Streptomycete

Date: August 1966
Creator: Francisco, Donald Edward
Description: The major purpose of this investigation was to determine the effect of carbon monoxide on the development of various morphological phases of a single isolate of the aquatic streptomycetes and to elucidate the physiological differences between terminal respiration in the primary and secondary stages. A secondary purpose was to repeat the work of Michael Lee Higgins involving the effect of anaerobiosis on the growth of the organism.
Contributing Partner: UNT Libraries
Effect of Colchicine on Neuronal Excitabilty

Effect of Colchicine on Neuronal Excitabilty

Date: August 1978
Creator: Okafo, Ngozi
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 accentuates the inhibition and substantially retards the rate of recovery in a dose-dependent fashion. Colchicine does not affect axonal conduction, nor the oxygen uptake of isolated crab or frog leg nerves. The inhibitory action of colchicine is therefore an effect on the electrical excitability of the receptive dendrites or soma, and not an effect on axonal conduction.
Contributing Partner: UNT Libraries
Effect of Cortisone Injections on Complement Titers of Guinea Pigs

Effect of Cortisone Injections on Complement Titers of Guinea Pigs

Date: 1958
Creator: Renshaw, Larry Alan
Description: As complement is now believed to have some function in immunity it becomes of interest to determine what effect, if any, cortisone may have upon complement concentration in animal sera.
Contributing Partner: UNT Libraries
The Effect of Geosmin on the Growth of Bacillus cereus

The Effect of Geosmin on the Growth of Bacillus cereus

Date: August 1972
Creator: Barnes, Randall D.
Description: The purpose of this study was to determine the effect of varying concentrations of geosmin on the growth of Bacillus cereus.
Contributing Partner: UNT Libraries
Effect of Immune Guinea Pig Serum and Cortisone on AKR Mouse Leukemia

Effect of Immune Guinea Pig Serum and Cortisone on AKR Mouse Leukemia

Date: 1958
Creator: Elliott, Arthur York
Description: This work is concerned with an attempt to clarify the role of cortisone in both the immune complement response and the progression of mouse leukemic tumor.
Contributing Partner: UNT Libraries
Effect of Light and Other Environmental Factors on Growth and Carotenogenesis of Corynebacterium Species Strain 7E1C

Effect of Light and Other Environmental Factors on Growth and Carotenogenesis of Corynebacterium Species Strain 7E1C

Date: August 1974
Creator: Howard, Marta E.
Description: This investigation studies effects of environmental factors on growth and carotenogenesis in Corynebacterium strain 7ElC. Changes in pH were found to effect growth more than carotenogenesis. However, certain nutrients or long incubation periods stimulated carotenoid formation more than growth. Dark conditions in a mineral salts-glucose medium stimulated growth, but minimized carotenogenesis. Tryptic soy broth or yeast extract elicited carotenogenesis in darkness. Although brief light exposure during inoculation was photoinductive, continuous exposure to light following inoculation was required for maximum pigment synthesis. Dark grown stationary phase cells required 24-hours of light for maximum pigment synthesis. Chloramphenicol inhibition of carotenogenesis in dark grown cells exposed to light showed that enzymes needed for carotenoid synthesis were absent from dark grown cultures.
Contributing Partner: UNT Libraries
The Effect of Light on Carotenoid Synthesis in Corynebacterium 7E1C

The Effect of Light on Carotenoid Synthesis in Corynebacterium 7E1C

Date: May 1977
Creator: Endicott, George R.
Description: The effects of light, light "mimicking" chemicals, and protein synthesis inhibitors on the photo-induced carotenogenesis of Corynebacterium 7EIC were studied. Changes in the dosage of fluorescent light applied to dark grown cells showed a dose related carotenogenic response. Maintaining the same dosage but varying the wavelength of monochromatic light revealed that light with a wavelength of 280 to 450nm was responsible for photo-induction. It further showed a peak of photo-induction between the wavelengths of 370 and 430nm. The light "mimicking" chemicals antimycin A and p-Chloromercurybenzoate were shown to have no light "mimicking" effects. The transcriptional inhibitor of protein synthesis actinomycin D partially inhibited, and chloramphenicol a translational inhibitor, completely inhibited photo-induced carotenogenesis.
Contributing Partner: UNT Libraries
Effect of Lipid Injections on Complement Titers of Guinea Pigs

Effect of Lipid Injections on Complement Titers of Guinea Pigs

Date: August 1959
Creator: Dowdy, James R.
Description: This thesis is a study of the effect of lipid injections on complement titers of guinea pigs.
Contributing Partner: UNT Libraries
The Effect of Media Constituents on Growth and Pigment Production of Mycobacterium Phlei, Pseudomonas Fluorescens, Pseudomonas Aeruginosa, and Staphylococcus Citreus

The Effect of Media Constituents on Growth and Pigment Production of Mycobacterium Phlei, Pseudomonas Fluorescens, Pseudomonas Aeruginosa, and Staphylococcus Citreus

Date: 1947
Creator: Robbins, Finis E.
Description: Little is known concerning the production and significance of bacterial pigments. There is seemingly an open field for studying the effects produced by varying the nutritive content of culture media upon which organisms are grown. This has led to an especial interest in, and the purpose of this investigation.
Contributing Partner: UNT Libraries
The Effect of Medium Constituents upon Pigment Production by Four Species of Bacteria

The Effect of Medium Constituents upon Pigment Production by Four Species of Bacteria

Date: 1947
Creator: Goode, Jo Dunn
Description: This investigation had for its aim the determination of the effects of various materials, added to the basic culture medium, upon pigment production of the four chromogens Staphylococcus aureus, Sarcina lutea, Serratia marcescens, and Rhodococcus cinnabaris.
Contributing Partner: UNT Libraries
The Effect of Repeated Antigen Injections on the C' and C'4 Titers in Guinea Pig Serum

The Effect of Repeated Antigen Injections on the C' and C'4 Titers in Guinea Pig Serum

Date: June 1961
Creator: Teague, Perry Owen
Description: In this study the effects of repeated antigen injections on total complement (C') and C'4 of guinea pig serum were investigated to determine if constant antigenic stimulation would show changes in the C' and C'4 titers. Attempts were also made to correlate any changes with variations in antibody titers during the repeated antigen injections.
Contributing Partner: UNT Libraries
The Effect of Short Term Immobilization and Drug Induced Muscle Atony on the Blood and Urine Chemistry of Dogs

The Effect of Short Term Immobilization and Drug Induced Muscle Atony on the Blood and Urine Chemistry of Dogs

Date: January 1965
Creator: Miller, Thomas Richard
Description: This thesis investigates immobilization and its complications in dogs.
Contributing Partner: UNT Libraries
The Effect of Sodium Salicylate on the Ultrastructure of Trypanosoma lewisi

The Effect of Sodium Salicylate on the Ultrastructure of Trypanosoma lewisi

Date: August 1974
Creator: Beck, Charles F.
Description: This study examines ultrastructural changes occurring in seven- and fourteen-day populations of Trypanosorfa lewisi when 60 mg sodium salicylate is administered to the host. These changes were related to the host-immune response. Seven-day trypanosomes showed approximately 10 posterior volutin granules. Seven-day trypanosomes whose host had received salicylate exhibited. 30 to 40 volutin granules, and their posterior tip exhibited volutin granules in high numbers sometimes excluding other cellular elements. Fourteen-day trypanosones showed fewer volutin granules than seven-day, salicylate-treated ones. Salicylate treatment caused no additional ultrastructural alterations. Thus the volutin granules are not linked to the reproduction inhibiting antibody (ablast in) but may be involved in the formation of the trypanocidal antibodies.
Contributing Partner: UNT Libraries
The Effects of 3-Deazaguanine on Chick Embryo Fibroblasts and Rat Kidney Cells Infected with Temperature-Sensitive Mutant and Wild-Type Rous Sarcoma Viruses

The Effects of 3-Deazaguanine on Chick Embryo Fibroblasts and Rat Kidney Cells Infected with Temperature-Sensitive Mutant and Wild-Type Rous Sarcoma Viruses

Date: December 1979
Creator: Fadare, Samuel O.
Description: Chick embryo fibroblasts and rat kidney cells infected in vitro with Rous Sarcoma viruses were treated with 3-deazaguanine (3-DG). The findings revealed that 3-DG inhibited virus-induced cellular transformation. Degree of inhibition is dependent on concentration and frequency of media change. 3-DG at the concentrations tested will not reverse transformed cells to the untransformed state and does not have marked effect on replication of viruses. Upon removal of 3-DG, its effect was shown to be reversible. Cell growth was generally retarded in medium containing 3-DG. When xanthosine and inosine were added to the medium, cell growth was unaffected, but it increased in guanosine.
Contributing Partner: UNT Libraries
Effects of Altitude on Pressure-Flow Relationships in the Vascular Bed of the Hind Limb of the Dog

Effects of Altitude on Pressure-Flow Relationships in the Vascular Bed of the Hind Limb of the Dog

Date: August 1966
Creator: Roberts, Donald E.
Description: The purpose of this investigation was to study the effects of decreasing barometric pressure upon the pressure-flow relationships in a peripheral vascular bed in an attempt at better delineation of the autoregulatory mechanisms. A decrease in barometric pressure does influence the transmural pressure and could theoretically affect smooth muscle tone. An evaluation of the extent of the transmural effect is essential to understanding vascular dynamics at altitudes.
Contributing Partner: UNT Libraries
Effects of Antigen Injection on Titer of C'3 and C'4 Complement Components of Rat Serum

Effects of Antigen Injection on Titer of C'3 and C'4 Complement Components of Rat Serum

Date: August 1957
Creator: Whalen, Paul Lorrance
Description: This work attempts to establish some phenomenon of a rise in titer of C'3 and C'4 due to antigenic stimulation. Normal level of complement is established and compared to other workers as well as against guinea pig levels. Young rats were bled to establish normal levels of complement. The animals were then injected with an antigenic substance and after a period of seven days were bled again to determine the level of complement. Various antigenic and non-antigenic substances were used as well as normal saline injections for control.
Contributing Partner: UNT Libraries
The Effects of Certain Organic Compounds Upon the Bacterial Deposition of Ferric Hydroxide from Ferric Ammonium Citrate

The Effects of Certain Organic Compounds Upon the Bacterial Deposition of Ferric Hydroxide from Ferric Ammonium Citrate

Date: 1956
Creator: Papadopoulou, Polykarpia C.
Description: This thesis studies the effects of certain organic compounds upon the bacterial deposition of ferric hydroxide from ferric ammonium citrate.
Contributing Partner: UNT Libraries
The Effects of Common Electrolytes on Growth and Development of Selected Species of Aquatic Actinomycetes

The Effects of Common Electrolytes on Growth and Development of Selected Species of Aquatic Actinomycetes

Date: August 1959
Creator: Sissom, Stanley L.
Description: The role that aquatic actinomycetes play, in the production of tastes and odors in water supplies has been investigated since 1948. The ability of these organisms to produce by-products in lakes and streams, which renders the water unpalatable, is of considerable public health importance. It is desirable that the waterworks industry has as much information as possible concerning the factors that contribute to the growth of these organisms. Since it appears that the aquatic actinomycetes may be isolated from most fresh-water sources, the problem of diversified environments and nutritional requirements offers an excellent field of investigation. The fresh-waters of the world contain variable quantities of electrolytes that may determine in part the biological activity of these organisms. The unsolved questions in this instance are concerned with the electrolytes present and their quantitative effects on the growth and development of these forms.
Contributing Partner: UNT Libraries
The Effects of Heparin on the Development of Resistance to Antibiotics by Staphylococcus Aureus

The Effects of Heparin on the Development of Resistance to Antibiotics by Staphylococcus Aureus

Date: August 1959
Creator: Blanton, William George
Description: Since heparin combines with some antibiotics to decrease the toxicity of the antibiotic to the patien, the purpose of this investigation is to determine whether it has any effect upon the development of resistance to antibiotics by Staphylococcus aureus.
Contributing Partner: UNT Libraries
The Effects of Hexadecanol on the Microbiota of Lake Hefner

The Effects of Hexadecanol on the Microbiota of Lake Hefner

Date: May 1968
Creator: Dickson, Kenneth L.
Description: It seemed desirable to investigate more fully the effect of hexadecanol on the microbial population of a reservoir. It was the purpose of this investigation to determine the effect of hexadecanol on the micro-biota of Lake Hefner, to ascertain which organisms were stimulated by hexadecanol both in the laboratory and the reservoir, and to investigate the degradation of hexadecanol by microorganisms selected from Lake Hefner.
Contributing Partner: UNT Libraries
Effects of High Altitude Exposure on Capillary Permeability

Effects of High Altitude Exposure on Capillary Permeability

Date: December 1971
Creator: Reaves, Troy Albert
Description: Observations of decreases in plasma volume, shifts in plasma and lymph protein concentrations, and increases in capillary permeability at high altitude have been reported in the literature by several investigators. This investigation was begun in an attempt to elucidate the possible significance of these phenomena in future space exploration, and because of the lack of knowledge concerning the underlying mechanisms. The purpose of this investigation was to determine the effects of exposure to hypobaric pressures on the capillary permeability to the normal plasma and lymph proteins.
Contributing Partner: UNT Libraries
The Effects of Hypothermia on the Release of Cardiac Enzymes

The Effects of Hypothermia on the Release of Cardiac Enzymes

Date: August 1977
Creator: Strawn, William B.
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 samples spectrophotometrically and electrophoretically. Significant CPK and LDH1 increases were observed in animals perfused between 25 and 19 C. These results indicate that, while heart function remained unchanged, an alteration occurred in the membrane integrity of the myocardial cells.
Contributing Partner: UNT Libraries