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Antibody Adsorption Used in Identification of Similar Streptomyces Species
This investigation involved the production of specific antisera against known International Streptomyces project strains of Streptomyces.
The Autecology of Celtis Laevigata in Flood Plain Forests of Denton County, Texas
This thesis describes the present nature of one facet of some of the flood plain forest stands in Denton County, Texas. The specific purpose was to demonstrate the presence or absence of difference between the Celtis laevigata (commonly known as the hackberry, southern hackberry or sugarberry) populations in stands on Denton Creek and Elm Fork of the Trinity River.
A Bacteriological Survey of a Freshwater Reservoir
In this study organisms that can be subcultured from lake water, using a prescribed procedure, limit, to an extent, the population, or portions of the population, that can be monitored. In essence, what is taking place is that a set of conditions is set forth and a study is made of the bacteria that will grow under these prescribed conditions.
The Cultural, Physiological, Morphological and Chemical Characteristics of an Actinomycete from Lake Waco, Texas
The purpose then of this paper has been to expand our knowledge of these aquatic forms by investigating the cultural, physiological, morphological, and chemical characteristics of an actinomycete isolated from the water supply, Lake Waco, of Waco, Texas.
The Dispersal of Algae and Protozoa by Selected Odonata
This study was designed to show what dissemules may be carried by selected genera of Odonata, where the dissemules may be predominantly carried on the selected insects and to relate the behavior of the selected Odonata to frequency of occurrence of micro-organisms on the insects.
An Ecological Survey of the Reptiles and Amphibians of Wise county, Texas
The purpose of this study was to record the relationships between the reptiles and amphibians of Wise County and the ecological subdivisions of the area. Wise County was chosen because of the heterogenity of the area and because of its proximity to other counties which have been previously and similarly studied.
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.
The Effect of Short Term Immobilization and Drug Induced Muscle Atony on the Blood and Urine Chemistry of Dogs
This thesis investigates immobilization and its complications in dogs.
Effects of n-Decenylsuccinic Acid (n-DSA) and It's Monomethyl Ester (m-MDSA) on Water and Ion Flux in Isolated Roots
The purpose of this study was (1) to measure the changes in water flux in isolated roots exposed to n-DSA and its mono-methly ester (m-MDSA) using a photometric technique in the absence of an externally applied suction and (2) to measure the flux of Na and K in similarly treated roots using a flame photometric method.
Effects of pH and Substrate on Growth of Escherichia Coli and Pseudomonas Aeruginosa in Mixed Continuous Culture
The express purpose for doing this project was to develop methods for the continuous culture of E. coli and P. aeruginosa as a mixed population, and to apply these methods in studying the effects of pH and substrate upon the growth of these two organisms in mixed continuous culture.
Effects of Selected Phytohormones on the Growth and Morphology of Escherichia Coli
The present investigation was undertaken as a preliminary study to learn the response of Escherichia coli cells grown under identical experimental conditions to various concentrations of indoleacetic acid, gibberellic acid, and kinetin alone, and in combination with one another.
Effects of X-irradiation on Ion Flux in Desheathed Toad Sciatic Nerves
The purpose of this thesis is to determine the effects of x-irradiation on the efflux of potassium, sodium and calcium ions from stimulated and unstimulated desheathed sciatic nerves.
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.
Effects of X-Irradiation on Water and Ion Flux in Isolated Roots
Due to the relatively small amount of work concerning radiation, it was thought feasible to use ionizing radiation as a tool to study the relationship between water and salt flux in isolated root systems. Moreover, the more quantitative potometric method lends itself well to such a study, since the two processes can be followed simultaneously. the aims of this study, therefore, were 1) to determine effects of X-irradiation on water, calcium and potassium flux in excised onion roots; 2) to determine the dose levels required for producing permeability changes; 3) to investigate the nature of radiation damage to root systems; and 4) to attempt to shed light on the relation between water transport and ion movement in root systems.
Extracts of Garden Vegetables as Sources of Nutrition for Various Microorganisms
This study was undertaken in order to determine whether the extracts of common garden vegetables could be incorporated into simple, economical culture media which might be used for the growth and cultivation of at least some of the more commonly used microorganisms.
Herpetology of the Amistad Reservoir Area, Val Verde County, Texas
The Amistad Reservoir in southern Val Verde County, Texas will impound a considerable amount of surface water in a semi-arid region in which natural surface water is scarce. Construction of the dam began in 1963 and the reservoir began to fill in the summer of 1968. This large impoundment could have a considerable ecological impact on the area. The purpose of this research was to study the ecological distribution and zoogeographic affinities of the herpetofauna and to establish an ecological baseline against which any future changes could be measured.
Individual, Social, and Seasonal Behavior of the Thirteen-Lined Ground Squirrel (Spermophilus tridecemlineatus)
The purpose of this study is to provide a qualitative, detailed description of individual and social behavior in a free-living population of thirteen-lined ground squirrels. Behavioral differences in relation to various periods of the annual cycle are also evaluated.
An Investigation of Gas Chromatographic Separation of Tastes and Odors Produced by Actinomycetes
It is the purpose of this thesis to evaluate a few selected gas chromatographic materials for the separation of odorants produced by an actinomycete culture under laboratory conditions. Also to compare the results obtained with concentrated solutions of a surface water containing similar odors under natural conditions.
Liver Glyoxalase Activity in Normal Mice and Mice with Lymphosarcoma
It is the purpose of this investigation to determine the variation of glyoxalase activity in liver of normal mice and in the liver of mice bearing a lymphosarcoma and to compare the glyoxalase activity of the lymphosarcoma with values previously reported in the literature for other tumor types. Further, if there is indeed a variation in liver glyoxalase activity between normal and tumor-bearing mice, it will be compared to the variation in the activity of two other enzymes present in liver tissue in relatively high concentration.
Microbiotic Cycles in Lake Hefner
The purposes of this paper are 1) to determine the microbiotic cycles which occur in Lake Hefner in order to form a basis for ascertaining the effects of future additions of evaporation control chemicals on the biological life of this reservoir, and 2) to make a generalization as to the microbiotic cycles which might occur in Southwestern reservoirs.
Population Dynammics in Mixed Cultures of Microorganisms
The purpose of this study was to determine the effect of substrate levels and different types of substrates on population changes of mixed cultures of Serratia marcescens and Saccharomyces cerevisiae, as compared to pure cultures.
A Rapid Modification of a Standard Disk-plate Antibiotic Susceptibility Test
The objective of the work reported in this paper is one of a two-fold nature. The first objective is to develop a disk-plate sensitivity test that is more rapid than that of existing methods. The second requisite is that the materials, techniques, interpretation, and reporting of results be the sane as those required for the disk-plate method described in the Difco Manual.
Relation of Dosage of Antiserum to Protection in Mouse Leukemia
It is the purpose of this paper to attempt to confirm the work of Schlagenhauf and Ingebrigsten and to show the effects of repeated injections of guinea pig serum immunized with various strains of mouse leukemia.
A Serological Investigation of Actinomycetes as a Preliminary to Taxonomic Study
This thesis is a serological investigation of actinomycetes as a preliminary to taxonomic study.
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.
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.
Studies of the Bird Life of Denton County, Texas
"As a means of defining the purpose of the problem, the following objectives were considered: (1) to list the species of birds observed in Denton and neighboring counties; (2) to assign a descriptive status to each species; (3) to estimate the relative abundance of each species (4) to annotate the list with data from other sources, when additional data provide a more accurate and complete description of the status of the species in Denton County; (5) to designate the section of the county in which each species was most frequently observed; and (6) to briefly summarize the changes in bird populations during the period 1950-1956, and to suggest some hypotheses which help explain these changes." -- leaf 6.
A Study of the Southern Spotted Channel Catfish, Ictalurus Punctatus (Rafinesque)
The purpose of the present study is to present research data on the propagation of the southern spotted channel catfish.
Terrestrial Vertebrates of Fannin County, Texas
The purposes of this thesis were (1) to provide some knowledge of the herptiles and mammals of this area, (2) to clarify the distribution of many of these animals in this section of Texas, and (3) to provide additional ecological information about the area.
Ultrastructural Changes of Tumor Implants in Mice
The purpose of this investigation was to observe the sequential ultrastructural changes in tumor implants of a well established tumor line in isologous mice.
A Vegetative Key to the Conspicuous Flowering Herbs of Denton County, Texas
"The area of study was restricted to those common flowering herbs of Denton County, Texas, which have conspicuous flowers or a conspicuous flower cluster. There were, however, many plants included in this flora which are common to several counties of north-central Texas. Since there has been no previous key devised for the herbs of Denton County, Texas, the purpose of this key was to provide a flora which could be used by elementary and high school instructors, as well as any other interested persons who lack an extensive knowledge of botanical nomenclature." -- leaf iv.