Degree Department
Degree Discipline
Degree Level
Country
States
105 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
105
next
A Yearly Study of the Bacterial Flora of Lake Dallas Water with Special Reference to Sanitation
The purpose of this thesis is to determine the relative numbers of colon bacteria in the water of Lake Dallas.
Date:
June 1937
Creator:
Foster, Edwin Michael
System:
The UNT Digital Library
Plant Dermatitis: Hypersensitivity to the Oleoresins of Fifty Common North Texas Plants.
A study of hypersensitivity of high school students to the oleoresins of fifty common North Texas plants.
Date:
August 1939
Creator:
Wells, Leora Joanna
System:
The UNT Digital Library
Plant Dermatitis: Hypersensitivity to the Oleoresins of Fifty Common Plants Indigenous to Hunt County, Texas
This investigation deals with the study of a possible hypersensitivity to the oleoresins of fifty common plants indigenous to Hunt County, Texas.
Date:
1940
Creator:
Smith, Dean
System:
The UNT Digital Library
A Study of Methods to Evaluate Thyroid Function and Their Application in Patients with Chronic Ulcerative Colitis
It was the purpose of this thesis to establish the functional level of the thyroid gland in patients with chronic ulcerative colitis.
Date:
1957
Creator:
Dill, Russell Eugene
System:
The UNT Digital Library
Studies on the Nutrition of Rhodospirillum Rubrum
The purpose of this study has been to examine the nutritional requirements of Rhodospirillum rubrum and, on the basis of the results, develop a culture medium which could be use to promote more rapid and abundant growth facilitating the laboratory cultivation and observations of the properties so exhibited.
Date:
August 1957
Creator:
Wentworth, Margaret Earl
System:
The UNT Digital Library
Anaerobic Organisms in Acute and Chronic Pulmonary Diseases
This study concerns a determination as to whether anaerobic organisms are involved in pulmonary diseases, particularly those of the chronic type.
Date:
August 1958
Creator:
Riddel, George Hugh
System:
The UNT Digital Library
Metabolism of Hydrocortisone by X-Irradiated Rat Liver Tissue as Determined by the Porter-Silber Chromagen Method
The present study may be considered endocrinological and radiobiological in nature. The endocrinology phase was concerned with studying the changes in endocrine function following the application of a stress agent. X-irradiation was chosen as the stressor in order to determine any difference in effect of this stressor from others which have been studied, e. g. heat, cold, metabolic poisons. Liver slices taken from rats at various time intervals following whole body X-irradiation were tested for their ability to metabolize hydrocortisone from a Krebs-Ringer solution.
Date:
August 1959
Creator:
Pryor, Nan Webb
System:
The UNT Digital Library
The Effect of Avidin Injected Intraperitoneally on the Course of Leukemia in the Mouse
The current work was undertaken to test the ability of avidin to affect the course of leukemia when administered intraperitoneally.
Date:
January 1961
Creator:
Jones, George Adams, III
System:
The UNT Digital Library
Factors Involved in the Antibiotic Sensitivity of Staphylococcus Aureus
It was the purpose of the present investigation to determine if sensitivity to other antibiotics can likewise be affected by subjecting S. aureus to heparin contact. It is of special interest in this problem to determine whether heparin in some manner affects the combining process of penicillin with the cells of several strains of S. aureus.
Date:
June 1961
Creator:
Rotter, Joan
System:
The UNT Digital Library
Assimilation of Inorganic Nitrogen by Aquatic Actinomycetes
It was the purpose of this investigation to present laboratory data concerning the assimilation of inorganic nitrogen by the aquatic actinomycetes. The strains of aquatic actinomycetes under consideration represented a cross section of those currently under culture at North Texas State University.
Date:
August 1962
Creator:
Davis, Ernst M.
System:
The UNT Digital Library
Some Effects of X-irradiation on the Plasma Corticosterone, Adrenal Weights, and Differential Leukocyte Count in the Rat
The purpose of the present study was twofold: (1) to determine if X-irradiation can be considered a direct stress agent, and if so, to what extent it differs from other stressors; and (2) to further elucidate the role of the adrenal cortex in the radiation syndrome by determining the more immediate responses of this system to X-irradiation.
Date:
August 1962
Creator:
Gaugl, John F.
System:
The UNT Digital Library
Effects of X-Irradiation on Na22 Efflux in Isolated Nerves
The purpose of this study was twofold: 1) to present experimental data on changes in permeability of fibers during irradiation using Na22 as the tracer isotope, and 2) to attempt to correlate these findings with the electrical changes observed.
Date:
January 1964
Creator:
Yang, Chui-hsu
System:
The UNT Digital Library
The Life Cylce of an Aquatic Actinomycete
The purpose of this investigation was an attempt to clarify the relatives taxonomic position of and to formulate some of the basic cyclic morphological and physiological processes occurring in an aquatic actinomycete possessing streptomycetal characteristics.
Date:
June 1964
Creator:
Higgins, Michael Lee
System:
The UNT Digital Library
X-irradiation and Drug Effects on Ventral Root Potentials in Cat Spinal Cords
The purpose of the present study was sixfold: 1. To study the effects of x-irradiation on spinal cord activity. 2. To study the effects of CNS drugs on spinal cord function as reflected by changes in the ventral root potentials. 3. To ascertain whether one can alter the observed spinal response to ionizing radiation by applying CNS drugs prior to, during, and following x-irradiation of a given spinal cord segment. 4. To shed some light on the role of higher brain centers on spinal reflexes. 5. To shed some light on the loci of radiation insult to the spinal cord. 6. To establish evidence for a possible drug-irradiation interaction in mammals.
Date:
August 1964
Creator:
Crow, Robert V.
System:
The UNT Digital Library
The Effects of Selected Algicides and Some Coordination Complexes upon the Apparent Photosynthesis of Chlorella Pyrenoidosa
Many experiments have been performed with the Warburg apparatus, or variations of this manometric technique, since Warburg's experiments (52, 53) where the effects of cyanides upon dark reactions and of urethanes upon light reactions of photosynthesis were demonstrated. The same basic techniques were utilized in this research in attempting to determine the effects of some coordination complexes upon the apparent photosynthetic rate of Chlorella pyrenoidosa. A second goal of the present paper was to investigate the potential of the Warburg apparatus as a tool for screening algicidal compounds.
Date:
June 1965
Creator:
Phelps, Robert G.
System:
The UNT Digital Library
Some Effects of X-irradiation on Oxygen Uptake and Serotonin Levels in Rat Brain Tissue Slices
The aim of this study is to determine the changes in respiration in tissues from specific brain areas X-irradiated in vitro using a direct monometric procedure also to determine the differences in radiosensitivity of specific areas in the brain as reflected by changes in oxygen uptake and to shed some light on the nature of the biochemical lesions in nerve tissues brought about by ionizing radiation.
Date:
January 1966
Creator:
Hines, John F.
System:
The UNT Digital Library
Responses to Diets High in Phenylalanine Compounds as Genetic Parameters in Mice
The induction of phenylketonuria in mice through the use of excess dietary phenylalanine is an area in which limited research has been done. This study intends to pursue further work in this area, more specifically, to study the effects of excess dietary phenylalanine and the phenylalanine analogue A.P.B.A. (2-amino-3-phenyl butanoic acid) (7) on brain serotonin and brain norepinephrine. In addition, the effects of these two compounds on the incidence of audiogenic seizures will be explored.
Date:
June 1966
Creator:
Boughey, Frederick W.
System:
The UNT Digital Library
Some Physiological Effects of Chlorine upon Two Chlorine Resistant Algae
This research is concerned specifically with the growth of two selected algae found surviving in chlorinated water in outdoor swimming pools. Unialgal cultures were used to determine the free chlorine residuals that these algae were able to tolerate.
Date:
June 1966
Creator:
Beddow, David G.
System:
The UNT Digital Library
The Effect of Carbon Monoxide on the Growth of an Aquatic Streptomycete
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.
Date:
August 1966
Creator:
Francisco, Donald Edward
System:
The UNT Digital Library
Effects of X-irradiation on Potassium Flux in Isolated Nerves
The purpose of this study, therefore, was threefold in nature: (1) to determine the effects of x-irradiation on the influx and efflux of potassium in compound nerve fibers (2) to attempt to relate the radiation-induced changes in electrical activity with potassium flux and (3) to use the information obtained to gain insight into the possible cellular site (s) of radiation insult to compound nerves.
Date:
August 1966
Creator:
Ramsey, Christian Norman
System:
The UNT Digital Library
Factors Involved in Passive Transfer of Contact Hypersensitivity
Delayed hypersensitivity can be conferred passively to normal animals. There exists a period when whole peritoneal exudate cells will passively confer delayed sensitivity, but a sonic extract from them will not; however, after a few more days, both whole cells and sonic extracts could transfer sensitivity. This investigation was undertaken to study the differences in cells collected at two different time intervals after initial sensitization of guinea pigs with 1-fluoro-2,4-dinitrobenzene.
Date:
August 1966
Creator:
Ellis, Walter L.
System:
The UNT Digital Library
Studies of Mouse Hypersensitivities
Having considered the data collected thus far concerning immediate and delayed hypersensitivity reactions in the mouse, the experimentation following is devised essentially to follow the pattern of Crowle in the production and testing for immunoresponse. Instead of using the normal solvent, that is, acetone, this work is also intended to partially evaluated the use of dimethyl sulfoxide as a solvent for the contact allergin, dinitroflurobenzene.
Date:
August 1966
Creator:
Meador, Earl C.
System:
The UNT Digital Library
Teratogenesis in Inbred Strains of Mice
The purpose of this investigation is to determine if differences exist between four inbred strains of mice in susceptibility to the drug thalidomide.
Date:
August 1966
Creator:
Morgan, Robert A.
System:
The UNT Digital Library
Some Effects of X-Irradiaion on the Adrenal Response to Hypothalamic Stimulation in Rats
Exactly where in the hypothalamus is the adrenal-pituitary response to X-irradiation "triggered" or initiated? Moreover, does ionizing radiation act directly on specific centers in the brain or does it act indirectly via the production of some humoral agents? Finally, what role does the hypothalamus play in the radiation-syndrome? The purpose of the present study was to attempt to answer these questions by determining the effects of two stressor agents, X-irradiation and electrical stimulation applied either singly or together, on the activity of the adrenal-pituitary axis. The parameters measured were changes in plasma corticosterone, in circulating eosinopihils, and in adrenal gland weight.
Date:
January 1967
Creator:
Agnew, Robert Laing
System:
The UNT Digital Library