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A Water Quality Study of Lake Texoma (open access)

A Water Quality Study of Lake Texoma

A series of four stations for sampling the waters of the Red Rivers and Lake Texoma was established. Water samples from top, middle, and bottom levels of these four stations were taken on monthly intervals during periods of homothermousity and on two-week intervals during periods of thermal stratification. These samples were analysed for the cations sodium, potassium, calcium, and magnesium, and for the anions normal carbonate, bicarbonate, sulfate, chloride, nitrate, water hardness (expressed as calcium carbonate), and phosphates. Determinations for dissolved oxygen, carbon dioxide, pH, temperature, and specific conductance were performed. Using these data, vertical profiles of the lake at these four stations were established. From the study of these data it was concluded that the waters of the Red River improve in quality coincident with impoundment, and that these improvements are sufficient to warrant the use of these waters.
Date: June 1959
Creator: Goodman, John Willis
System: The UNT Digital Library
An Evaluative Study of the Grasslands of the R.J. McMurry Ranch, Denton County, Texas (open access)

An Evaluative Study of the Grasslands of the R.J. McMurry Ranch, Denton County, Texas

It is the purpose of this problem to classify the four major pastures of the McMurry ranch using the discussed classification system. The definite measurable qualities characterizing each condition of the system are used extensively in this study. The problem is concerned also with the observation of results of misuse, the present practices that could result in further depletion of portions of the McMurry ranch, and procedures being employed at the present time aimed toward the restoration of these depleted portions.
Date: June 1951
Creator: Nolen, Bette Rudd
System: The UNT Digital Library
Effects of Smoking on Gastric Secretion and Gastric Motility in Man (open access)

Effects of Smoking on Gastric Secretion and Gastric Motility in Man

This thesis is concerned with the use of some of the newer techniques in a study of some of the effects of cigarette smoking on gastric secretion and gastric motility in normal subjects and in patients with active duodenal ulcers.
Date: June 1956
Creator: McKenzie, Jess Mack
System: The UNT Digital Library
Factors Affecting Pigment Production in Mycobacterium rhodocrous (open access)

Factors Affecting Pigment Production in Mycobacterium rhodocrous

This study was undertaken in order to isolate and identify the pigment, if possible, and to determine the effect of substrate, substrate concentration, light exposure, and pH on pigment production in this organism.
Date: June 1970
Creator: Chamberlain, Charlene
System: The UNT Digital Library
Metabolism of Methylglyoxal by Scenedesmus Quadricauda (open access)

Metabolism of Methylglyoxal by Scenedesmus Quadricauda

The purpose of this study was to investigate the metabolic pathways of methylglyoxal in S. quadricauda.
Date: June 1970
Creator: Rounsavall, Terry Yale
System: The UNT Digital Library
Specifity of Allergic Responses Following Injection of Simple Chemical Protein Conjugates (open access)

Specifity of Allergic Responses Following Injection of Simple Chemical Protein Conjugates

The purpose of this investigation has been to determine the characteristics of the immune response to 1-fluoro-2,4-dinitrobenzene when this hapten is conjugated with various types of proteins.
Date: June 1965
Creator: Lowke, George Edward
System: The UNT Digital Library
The Effects of Selected Algicides and Some Coordination Complexes upon the Apparent Photosynthesis of Chlorella Pyrenoidosa (open access)

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
Serological Characteristics of Coagulase Positive and Negative Staphylococci (open access)

Serological Characteristics of Coagulase Positive and Negative Staphylococci

For this work, the decision was made to contrast two serological tests, that of the tube agglutination technique and the fluorescent antibody technique for correlation with the coagulase and other characteristics of Staphylococcus strains. This has been a preliminary survey in the hope that as further knowledge is obtained about the staphylococci, grouping of the organisms will become more routine and relatively less complex.
Date: June 1966
Creator: Newton, John H.
System: The UNT Digital Library
Correlation of C'4 and Antibody Response to Antigen-Adjuvant Injections (open access)

Correlation of C'4 and Antibody Response to Antigen-Adjuvant Injections

This paper will attempt to determine whether the increased C'4 previously shown following antigen and adjuvant injection could be correlated to antibody increase following antigen injection.
Date: June 1962
Creator: Foster, Billy G.
System: The UNT Digital Library
A Serological Study of the Antigenic Fractions of the Aerobic Actinomycetes (open access)

A Serological Study of the Antigenic Fractions of the Aerobic Actinomycetes

The purpose of this investigation is to alleviate this confusion by first testing means of separating the antigenic components of the aerobic actinomycetes--obtaining, if possible, a monospecific antigen. Antisera produced from these monospecific antigens will then be tested for their possible use in the serological grouping of the aerobic actinomycetes.
Date: June 1964
Creator: Hutcheson, Josephine
System: The UNT Digital Library
Factors Involved in the Antibiotic Sensitivity of Staphylococcus Aureus (open access)

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

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

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.
Date: June 1961
Creator: Teague, Perry Owen
System: The UNT Digital Library
Some Physiological Effects of Chlorine upon Two Chlorine Resistant Algae (open access)

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
A Comparison of Specificity of Passive Transfer of Chemical Contact Hypersensitivity Following Different Methods of Sensitization (open access)

A Comparison of Specificity of Passive Transfer of Chemical Contact Hypersensitivity Following Different Methods of Sensitization

This thesis compares the specificity of passive transfer of chemical contact hypersensitivity following various methods of sensitization.
Date: June 1967
Creator: Foster, Terry L.
System: The UNT Digital Library
The Life Cylce of an Aquatic Actinomycete (open access)

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
Colonial Variations of a Mucoid Strain of Staphylococcus Aureus (open access)

Colonial Variations of a Mucoid Strain of Staphylococcus Aureus

It was the purpose of the present investigation to demonstrate the selection of a variant of one strain of Staphylococcus aureus by altering certain environmental factors, and to study that variant as to biochemical activities and capsule formation.
Date: June 1963
Creator: Liston, Winston Bryan
System: The UNT Digital Library
A Study of Active and Passive Immunity in Mouse Leukemia (open access)

A Study of Active and Passive Immunity in Mouse Leukemia

This thesis describes an attempt to increase the life span of mice after injection of a leukemic tumor. Fatty acids were used as a protecting agent against the leukemic tumor.
Date: June 1961
Creator: Hinkle, Dan C.
System: The UNT Digital Library
Pressure-Flow Relationships in the Isolated Cerebral Circulation of the Dog (open access)

Pressure-Flow Relationships in the Isolated Cerebral Circulation of the Dog

The purpose of this investigation is to determine the pressure-flow relationships in the isolated canine cerebral vascular bed. These relationships in vessels which supply an organ surrounded by bone are theoretically influenced by limiting factors which are not present in those vessels surrounded by soft tissue. An evaluation of the extent of these limitations is essential to thorough understanding of the dynamics of the cerebral vascular bed.
Date: June 1962
Creator: Alexander, William Carter
System: The UNT Digital Library
A Comparative Study of Passive Transfer Mechanisms of Tuberculin and Chemical Contact Delayed Hypersensitivities in the Guiea Pig (open access)

A Comparative Study of Passive Transfer Mechanisms of Tuberculin and Chemical Contact Delayed Hypersensitivities in the Guiea Pig

This study is concerned with a critical comparison of the passive transfer mechanisms of tuberculin and chemical contact hypersensitivities in the guinea pig by use of a four phase experimental approach.
Date: June 1970
Creator: Nunez, William Joseph
System: The UNT Digital Library
Pleomorphism in Selected Genera of Algae (open access)

Pleomorphism in Selected Genera of Algae

It is the purpose of this study to ascertain what environmental factors might cause morphological changes exhibited by certain algae, also to determine if this variation in morphology is vegetative, reproductive, or artifactual in nature, and to show what effects these changes in morpohology might have on classification of the organisms in question.
Date: June 1967
Creator: Bruton, Barbara A.
System: The UNT Digital Library
Responses to Diets High in Phenylalanine Compounds as Genetic Parameters in Mice (open access)

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
Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation (open access)

Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

This thesis aimed to study the seventy-two representative wells of Denton County and to determine the possibilities of infection with typhoid organism. The sanitary survey and the test for Colon-Aerogenes bacteria show that 55% of the 72 wells studied are unsanitary, 27% are sanitary, and 18% are doubtful.
Date: June 1937
Creator: Roberts, Sally Stevens
System: The UNT Digital Library
A Study of the Phytoplankton Population of Lake Dallas (open access)

A Study of the Phytoplankton Population of Lake Dallas

The limnological investigation of any body of water is undertaken in order to secure more accurate information concerning the factors which play an important role in fish production or sanitation. This study shows the qualitative and quantitative planktonic algae in Lake Dallas, for the year 1937-38.
Date: June 1938
Creator: Bagwell, Russell L.
System: The UNT Digital Library
A Yearly Study of the Bacterial Flora of Lake Dallas Water with Special Reference to Sanitation (open access)

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