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A Study of Sympathiomimetic Amines, Synthesis of O-Alkylhydroxylamines

Description: Although many sympathomimetic amines have been prepared, the perfect one has not yet been made. Chemists are still attempting to synthesize a selective drug with more prolonged effects and free from side reactions or compensatory vasodilation. With this idea in mind it seemed feasible to prepare a group of O-substituted hydroxylamines.
Date: 1947
Creator: Robbins, Margaret C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Study of Hereditary Predisposition to Cardiovascular Diseases

Description: Because the many physicians and students of heredity have not been closely associated in finding that the causes of cardiovascular diseases might lie, in a large measure, to an inherited predisposition, this study has been undertaken; first, to contribute to several more case studies of cardiovascular diseases to the knowledge of heredity; second, to find if there is a possible successive occurrence of cardiovascular diseases in generation after generation; and third, to determine a possible mo… more
Date: 1949
Creator: McCarty, Juanita Mavis
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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An Analysis of Practices for Teaching Conservation of Natural Resources

Description: The problem of teaching conservation resolves itself into two major aspects--one concerned with content material; the other with school and classroom procedures. The author intends to approach the problem from three viewpoints. First, a need for teaching conservation will be shown. Second, the present practices will be discussed. Third, potential methods and materials will be discussed.
Date: 1941
Creator: Ford, A. Lewis (Albert Lewis)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Possible uses of North Texas Plants and Animals in Elementary Science

Description: This thesis aimed to study plants and animals of North Texas which are adaptable for use in elementary science. In this study, 15 groups of plants and animals were selected as representative ones and among other benefits, each group of organisms was examined for its contributions to a limited understanding of bilogical principles.
Date: May 1937
Creator: Millican, Addie
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Correlation of the Edaphic Factors with the Vegetation of the Woodbine Sands, Denton County, Texas

Description: The purpose of this study was to correlate the Vegetation of the Woodbine Sands with the edaphic factors. In the laboratory an analysis of the edephic factors was made of the twenty-two soil types collected from the three formations. The results of these and other analysis are shown in tables and graphs. The results indicate that the vegetational cover of an area that is uniform in its origin and in its resident soil factors is determined by the edaphic factors present.
Date: August 1936
Creator: Graham, H. L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Comparative Study of the Bottom Fauna of four Texas Lakes

Description: This thesis attempted to study the bottom productivity both qualitatively and quantitatively with reference to the distribution of bonthos. The study of the bottom fauna in large reservior lakes is a relatively new field. This work will give more information on an unknown field than previously existed, although its scope is not intend to be exhaustive.
Date: August 1938
Creator: Lamb, Leonard D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Study of the Phytoplankton Population of Lake Dallas

Description: 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.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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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

Description: 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 ou… more
Date: 1948
Creator: Elliott, James M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Food Habit Analysis of the Two Species of Texas Crappie

Description: This study is based upon information taken from stomach analysis of 302 black crappie and 561 white crappie; the following data will be presented: 1. Food of adults and fingerlings; 2. Diet variation in relation to food availability; 3. Seasonal variation of feeding habits; 4. Diet variation in relation to size of crappie. Collections were made from ten lakes located in North, East, Central, and South Texas.
Date: 1941
Creator: Mitchell Glenn C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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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

Description: 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 stud… more
Date: 1950
Creator: Cooper, William A.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Reproductive Cycles of Five Species of Texas Centrarchids

Description: This thesis examines the reproductive cycles of five species of Texas centrarchids: the largemouthed black bass, the black crappie, the bluegill, the redear sunfish, and the striped bass. In this report attention is given to the reproductive cycles of the five species for a period of one year.
Date: 1948
Creator: Smith, Charles G.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Fecundity of the Bluegill (Lepomis Macrochirus) in Certain Small East Texas Reservoirs

Description: A study of reproduction and spawning habits of the bluegill in a particular lake must include adequate samples for each period of the year. This will make it possible to determine the number of eggs in each spawn and the frequency of spawning. The number of spawns and average egg production for various sized fish shows the pattern of activity and makes possible further basic research.
Date: 1949
Creator: Estes, Charles M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Biological Indices of Stream Pollution

Description: A thorough biological survey and evaluation is a lengthy and expensive project. The number of technically trained persons required prevent its use by most public agencies. Since public health departments are the groups most frequently concerned with measuring the effects of pollution in streams, a need exists for a simplified method of sanitary survey. Recognizing this need, the Texas Health Department assigned the writer the problem of devising a method of survey which would require a field pa… more
Date: August 1952
Creator: Russell, James C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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