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Actinoplanes Philippinensis: Effect of Carbon Sources on Zoospore Production
Actinomycetes are able to utilize a great variety of carbohydrates, like sugar. The particular kind of sugar and its concentration has decisive effect on the growth of microorganisms. The proper nutritional media aids also in the production of spores. Based on this generalization, that the growth and sporulation of microorganisms are greatly influenced by the nature and the concentration of carbohydrates, an attempt has been made to study Actinoplanes philippinensis with respect to this influence.
Date:
May 1968
Creator:
White, Olivia
System:
The UNT Digital Library
The Adaptability and Present Status of Andropogon Ischaemum L. in Denton County, Texas
This investigation has been made with reference to the adaptability of Andropogon ischaemum, King Ranch bluestem, to various soils, various slopes, and various erosion conditions in Denton County.
Date:
1951
Creator:
Belders, Floyd William
System:
The UNT Digital Library
Adenylate Energy Charge Determinations of Soil Bacteria Grown in Soil Extract Medium
The adenylate energy charge values of twenty bacteria isolated from soil and cultured in a medium consisting of soil and distilled water were determined by the luciferin-luciferase bioluminescense method. The purpose of this study was to examine the growth and energy charge values of these organisms in soil extract medium, and to determine what effect the addition of glucose has on their energy charge values. Three of the organisms employed in this study showed energy charge values similar to those reported for bacteria grown in enriched media. The remainder of the isolates demonstrated low energy charge values, and scant growth in the soil medium.
Date:
August 1988
Creator:
Rodriguez, Luis A. (Luis Antonio)
System:
The UNT Digital Library
Advanced Techniques in Microbial and Molecular Biology: Laboratory Procedures for a Graduate Level Course
Advanced laboratory techniques for Microbial and Molecular Biology at the graduate level are presented in this thesis. The procedures for the laboratory experiments are set forth in detail. This laboratory is conducted as two parts, each by a different professor. Part 1 covers the experiments conducted by Dr G.A.O. Donovan. These experiments include an introduction, staining procedures, biochemical reactions, mutagenesis experiment, essays,. preparation and analysis of plasmid DNA and various other topics. Part 2 covers the experiments conducted by Dr. Daniel Kunz and includes various topics like media preparation, phenotyping strains, conjugative transfer of plasmids, SDS-PAGE, induction and measurement of enzyme and transposon mutagenesis
Date:
August 1998
Creator:
Kumar, Shalini
System:
The UNT Digital Library
The Age and Rate of Growth of the Black Crappie, Pomoxis Nigro-Maculatus (Le Sueur), and the White Crappie, Pomoxis Annularis Rafinesque, in the Koon Kreek Klub Lakes, Texas
This study is another phase of the overall research program designed to furnish basic information for the management of East Texas lakes and has as its specific purpose the determination of the age and growth characteristics of two valuable species on these waters. The species to be considered are the black crappie, Pomoxis nigro-maculatus (Le Sueur) and the white crappie, Pomoxis annularis Rafinesque. Both species are highly regarded as food fish and have for many years offered recreational outlets for Texas fishermen.
Date:
1948
Creator:
Elliott, James M.
System:
The UNT Digital Library
The Age, Growth, and Food Habits of the Lake Dallas White Bass, Lepibema Chrysops (Rafinesque)
This study was made to secure certain new information concerning the food habits and growth of the white bass, Lepibema chrysops (Rafinesque), which is quite generally considered a good game and good fish.
Date:
1942
Creator:
Micks, Don W.
System:
The UNT Digital Library
Age, Growth, and Food Habits of the Largemouthed Black Bass (Micropterus Salmoides) and the Spotted Bass (Micropterus Puctulatus SSP) in North and East Texas Lakes
This study is based on the examinations and analyses of 388 largemouthed black bass (Micropterus salmoides) and 118 spotted black bass (Micropterus puctulatus ssp.) which were collected over a period of three years from 9 lakes in the North-Central and East Texas areas. The results should show the following: (1) the average age of the black bass in each of the nine reservoirs in Texas; (2) the growth rate of the bass in these reservoirs; (3) the feeding habits of the bass in all reservoirs studied; (4) a comparison of the growth rates of the largemouthed and spotted basses; and (5) a comparison of the growth rates of bass from Texas and Oklahoma.
Date:
1950
Creator:
Cooper, William A.
System:
The UNT Digital Library
Altered Leukemogenic Activity by Thyrotropic Treatment of Leukemic Mouse Thymus in Vitro
This investigation was planned to observe if the leukemic thymic tissue in vitro would inactivate TSH and to study the effect that TSH would have on the leukemogenic properties of these cells when transplanted into a high-leukemia strain of mice.
Date:
1956
Creator:
Rains, Robert Milton
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
An Analysis and Evaluation of the Elementary Science Curricula in the State Universities and Leading Teachers Colleges in the United States
The purpose of this study is to determine the status of elementary science curricula in the different state universities and the leading teachers colleges in the United States.
Date:
1940
Creator:
Sanders, Agnes Ruth
System:
The UNT Digital Library
An Analysis of Distribution Patterns of Amphibians and Reptiles in Texas
The purpose of this investigation was to analyze the distribution of amphibians and reptiles in Texas by means of the methods of Webb and Hagmeier and Stults. An additional graphical analysis was made, including range and range limits which provides a cross-section of faunal change along selected base lines across the state.
Date:
August 1969
Creator:
Leonard, Cuyler Hershey
System:
The UNT Digital Library
Analysis of Phytoplankton Responses to Water Chemistry Dynamics in a Moderately Eutrophic North Texas Reservoir
Canonical correspondence analysis (CCA) was used to explore relationships between measured environmental variables and in situ phytoplankton communities in a moderately eutrophic North Texas Reservoir.
Date:
May 1998
Creator:
Banks, Kenneth E. (Kenneth Edward)
System:
The UNT Digital Library
Anatomy and Physiology Syllabus for Community Colleges
This syllabus includes both lecture notes and laboratory activities for a two-semester anatomy and physiology community college course. The syllabus is based on a 16-week semester that is comprised of a three-hour lecture section and a one-hour laboratory class each week. Both the lecture course and laboratory are necessary to fulfill the requirement for anatomy and physiology. Laboratory activities coincide with lectures to enhance understanding of each topic by providing visual and hands-on experiments for the concepts learned in the lecture. Laboratory quizzes will be given each week to help students maintain a working knowledge of the material learned in the laboratory. This course is appropriate for the typical anatomy and physiology student and should benefit both students who plan to major in biology and also those who are non-biology majors. Because subject matter in anatomy and physiology is quite difficult, the importance of attendance and good study skills is stressed.
Date:
May 2000
Creator:
Schulz, Leslie
System:
The UNT Digital Library
Annual Lipid Cycles in the Lizard Cnemidophorus Tigris
Annual lipid cycles were determined for adult male and female Cnemidophorus tigris collected near El Paso, Texas during 1970-1971.
Date:
August 1972
Creator:
Gaffney, Fred G.
System:
The UNT Digital Library
Antibacterial Effect of the Oleoresins of One Hundred Common Texas Plants upon Twenty-Five Gram-Negative Mirco-Organisms
This investigation deals with the study of the possible antibiotic effect of oleoresins of one hundred common Texas plants upon twenty-five gram-negative bacterial organisms.
Date:
1949
Creator:
Danhof, Ivan E.
System:
The UNT Digital Library
Antibiocity of the Oleoresins of One Hundred Texas Spermatophytes upon Twenty Gram-Positive Bacterial Organisms
This investigation is concerned with the testing, in vitro, of oleoresins from one hundred higher plants common to North and South Central Texas. The plants used were selected in order to obtain a representative collection which might be of value in future research.
Date:
1949
Creator:
Richardson, Lavon P.
System:
The UNT Digital Library
The Antibiotic Activities of Some Members of the Cactaceae Family
This problem has been concerned with, first, the collection of sixteen species of plants belonging to Cactaceae family; second, the drying of these and the extraction of the oleoresins thereof; third, the determination of the extent to which these substances inhibit the growth of ten gram-positive and ten gram-negative bacterial organisms; and fourth, a determination of the possible utilization of these extracts a prophylactic or chemotherapeutic agents.
Date:
1951
Creator:
Gilmore, Derward E.
System:
The UNT Digital Library
The Antibiotic Effect of Pigmented Actinomycetes
This thesis attempts, first, to correlate pigmentation of actinomycetes with the degree of antibiocity; second, to establish the most favorable means of producing a rich luxuriant pigmentation in the individual organism studied by enriching favorable media with specific types of proteins and amino acids.
Date:
1951
Creator:
Cichon, Casimir Joseph
System:
The UNT Digital Library
The Antibiotic Properties of the Oleoresins of Twenty-Five Common Garden Vegetables
The purpose of this problem is to determine the presence and extent of antibiotic materials as found in the oleoresins of a selected group of garden vegetables. The problem has consisted of, first, the collection and preparation of specimens of twenty-five commonly used garden vegetables; second, the extraction of the oleoresins from these; third, the determination of the inhibitory and other effects of these oleoresins against several strains of selected gram-positive and gram-negative bacteria; and fourth, the evaluation of the potentialities of these oleoresins with regard to their future use as medicinal prophylactics and therapeutics.
Date:
1951
Creator:
Ennis, Arthur F.
System:
The UNT Digital Library
Antibiotic Sensitivity of Bacteria Isolated from City Water Distribution Systems
This thesis studies antibiotic sensitivity of bacteria isolated from city water distribution systems.
Date:
August 1958
Creator:
Williams, Catherine
System:
The UNT Digital Library
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.
Date:
January 1970
Creator:
Lassiter, Carroll B.
System:
The UNT Digital Library
The Application of Chlorine Dioxide to Tastes and Odors in Water Supplies
This problem was undertaken to determine the potentialities of chlorine dioxide as an algaecide and as an agent for the removal of tastes and odors from fresh water.
Date:
1952
Creator:
Hemphill, Louis
System:
The UNT Digital Library
Application of Fluorescent Antibody Methods for the Enumeration and Identification of Bacillus Cereus
This particular work is proposed as a test of the expedience of using the fluorescent-antibody technique as a method for enumeration and identification of certain strains of B. cereus that have been found to be effective in preventing taste and odor in water supplies resulting from certain Actinomycete blooms.
Date:
August 1969
Creator:
Ferebee, Robert Newton
System:
The UNT Digital Library
Aquatic Vegetation Nutrient Budgets and Sedimentation in a Southwestern Reservoir
During four growing seasons, aquatic vascular plant production and distribution were studied in Pat Mayse Lake, Texas, a 2425 hectare oligo-mesotrophic reservoir. The dominant macrophyte population was Myriophyllum spicatum L. Growth rates and regrowth rates of mechanically harvested Myriophyllum beds were found to be dissimilar. Based on estimates of watermilfoil nutrient content, there were insufficient nutrients in the entire population to alter the trophic status of this reservoir should all of the nutrients be instantaneously released. Sediments were the primary nutrient (nitrogen and phosphorus) sink. Bank erosion and solids transport from the watershed appear to contribute most of the sediments and a lake-wide mean sedimentation rate of 2.5 cm/year was estimated from sediment trap and core sample data.
Date:
May 1986
Creator:
Clifford, Philip A. (Philip Alan)
System:
The UNT Digital Library