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  Partner: UNT Libraries
 Decade: 1950-1959
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
An Evaluation of the United States Soil Conservation Service Program of Grassland Recovery on the Land Utilization Project in Wise county, Texas

An Evaluation of the United States Soil Conservation Service Program of Grassland Recovery on the Land Utilization Project in Wise county, Texas

Date: August 1952
Creator: Hyman, Ruel Richard
Description: This investigation was undertaken in order to evaluate the United States Soil Conservation Service program of grassland recovery on the land utilization project in Wise County, Texas.
Contributing Partner: UNT Libraries
Toxicity Studies of Aquatic Actinomycetes

Toxicity Studies of Aquatic Actinomycetes

Date: August 1952
Creator: Fair, Helena Juengermann
Description: Since Actinomycetes have been isolated from finished public drinking water, it is believed that the organisms are unaffected by the chlorination and flocculation of water treatment plants and pass as spores through the filters into the general distribution system. For this reason it was deemed imperative to study the toxic effects of these organisms.
Contributing Partner: UNT Libraries
A Comparative Study of the D Cells of Certain Mammalian Islets of Langerhans

A Comparative Study of the D Cells of Certain Mammalian Islets of Langerhans

Date: August 1954
Creator: O'Brien, Larry Joe
Description: The purpose of this study is to describe and compare the D cells of the islets of Langerhans in six different species of mammals.
Contributing Partner: UNT Libraries
A Study of the Southern Spotted Channel Catfish, Ictalurus Punctatus (Rafinesque)

A Study of the Southern Spotted Channel Catfish, Ictalurus Punctatus (Rafinesque)

Date: January 1954
Creator: McClellan, William G.
Description: The purpose of the present study is to present research data on the propagation of the southern spotted channel catfish.
Contributing Partner: UNT Libraries
Seed Treatment of Thirty Species of Pasture Grasses and Legumes with Certain Du Pont Disinfectants

Seed Treatment of Thirty Species of Pasture Grasses and Legumes with Certain Du Pont Disinfectants

Date: 1950
Creator: Clark, Caleb Perrin
Description: This review has dealt primarily with the efforts of scientists to control certain smut diseases of grains. The principal reason for treating plant seeds is to obtain good stands of vigorous, healthy plants that will produce increased yields of superior seed.
Contributing Partner: UNT Libraries
Microbial Utilization of a Certain Hydrocarbon Insecticide

Microbial Utilization of a Certain Hydrocarbon Insecticide

Date: August 1951
Creator: Dorman, Homer L.
Description: This problem includes, first, the isolation and identification of microorganisms which utilized the hydrocarbon insecticide as a sole source of carbon and energy; second, a determination of the effect on plants sprayed with the hydrocarbon medium as compared with the effect on plants sprayed with the hydrocarbon medium containing a good growth of hydrocarbon-utilizers; and third, a determination of the ability of laboratory stock cultures of organisms to utilize or remain alive in the hydrocarbon medium.
Contributing Partner: UNT Libraries
Biological Indices of Stream Pollution

Biological Indices of Stream Pollution

Date: August 1952
Creator: Russell, James C.
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 Heal Department assigned the writer the problem of devising a method of survey which would require a field party of two and could be conducted entirely from a mobile field laboratory.
Contributing Partner: UNT Libraries
A Rapid Modification of a Standard Disk-plate Antibiotic Susceptibility Test

A Rapid Modification of a Standard Disk-plate Antibiotic Susceptibility Test

Date: January 1955
Creator: Jackson, Leslie Warren
Description: 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.
Contributing Partner: UNT Libraries
Anaerobic Organisms in Acute and Chronic Pulmonary Diseases

Anaerobic Organisms in Acute and Chronic Pulmonary Diseases

Date: August 1958
Creator: Riddel, George Hugh
Description: This study concerns a determination as to whether anaerobic organisms are involved in pulmonary diseases, particularly those of the chronic type.
Contributing Partner: UNT Libraries
An Investigation of Selected Factors Related to the Professional Status of the Science Teachers in the Four-Year Accredited High Schools of Texas for the School Year 1952-1953

An Investigation of Selected Factors Related to the Professional Status of the Science Teachers in the Four-Year Accredited High Schools of Texas for the School Year 1952-1953

Date: August 1953
Creator: Whitehead, Oren W.
Description: The purpose of this study is to gather information related to the professional status of the science teachers in the four-year accredited high schools of Texas for the school year 1952-1953. The principal concern of the study is "Who is teaching science?"
Contributing Partner: UNT Libraries
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