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  Partner: UNT Libraries
 Decade: 1950-1959
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
A Study of Selected Factors Influencing Science Majors Toward Science Careers

A Study of Selected Factors Influencing Science Majors Toward Science Careers

Date: August 1957
Creator: Bragg, Louis Hairston
Description: "The purpose of this study is to gather information concerning some factors which may have operated to influence science majors in North Texas State College toward science careers."--4.
Contributing Partner: UNT Libraries
The Effects of Common Electrolytes on Growth and Development of Selected Species of Aquatic Actinomycetes

The Effects of Common Electrolytes on Growth and Development of Selected Species of Aquatic Actinomycetes

Date: August 1959
Creator: Sissom, Stanley L.
Description: The role that aquatic actinomycetes play, in the production of tastes and odors in water supplies has been investigated since 1948. The ability of these organisms to produce by-products in lakes and streams, which renders the water unpalatable, is of considerable public health importance. It is desirable that the waterworks industry has as much information as possible concerning the factors that contribute to the growth of these organisms. Since it appears that the aquatic actinomycetes may be isolated from most fresh-water sources, the problem of diversified environments and nutritional requirements offers an excellent field of investigation. The fresh-waters of the world contain variable quantities of electrolytes that may determine in part the biological activity of these organisms. The unsolved questions in this instance are concerned with the electrolytes present and their quantitative effects on the growth and development of these forms.
Contributing Partner: UNT Libraries
A Study of a Selected Group of Science Related Characteristics of Non-Science Majors

A Study of a Selected Group of Science Related Characteristics of Non-Science Majors

Date: August 1957
Creator: Bearden, Bennie Paul
Description: The purpose of this study is to gather information related to the characteristics of two groups of undergraduate non-science majors; namely, those students who once considered science as a career and subsequently changed to a non-science major and those who have never considered a career in science. It is frequently observed that children in the elementary school have an intense interest in science. One of the principal concerns of this study is how and for what reasons has the interest in science changed between elementary school and college? It is also the purpose of this study to gather information related to the attitudes of these college students toward the science courses they have had in high school and toward their science teachers. In attempting to arrive at an answer, the group who once considered a science career and those who have never considered an occupational choice in a field of science will be compared in the following areas: 1. General information such as sex, age, size of high school attended, rank within their graduating classes, college classification and military experiences. 2. Occupations and hobbies of parents. 3. Experiences which may influence attitudes toward science such as elementary school science, high ...
Contributing Partner: UNT Libraries
A Vegetative Key to the Grasses of Erath County, Texas

A Vegetative Key to the Grasses of Erath County, Texas

Date: August 1951
Creator: Robinson, Inez Evans
Description: "The orientation of this study began with a collection of the grasses of Erath County during their flowering periods. Collections were made in the Spring and Fall of 1950 and 1951 to obtain both vernal and autumnal grasses. Identifications were made from the grass floras previously mentioned and checked against specimens in the herbarium of North Texas State College for verification. In addition, the list was checked by W.A. Turney, Conservationist, United States Department of Agriculture of Dublin, Texas. Finally, the list was compared with that prepared by W.M. Cory for the plant areas of which Erath County is a part. On the basis of the above identifications, a critical study of the vegetative characteristics was made and a key based on these features prepared. The width of the blad and characteristics of the ligule, roots, culms, and sheaths were used to distinguish each of the eighty-six specimens found in the collection area. A drawing was made of the longitudinal section of the juncture of the blade and the sheath of each grass. This diagnostic section includes the collar, ligule, a part of the blade and sheath, and auricles, if present."-- leaf 5.
Contributing Partner: UNT Libraries
An Investigation of Naturally Occurring Tastes and Odors from Fresh Waters

An Investigation of Naturally Occurring Tastes and Odors from Fresh Waters

Date: May 1955
Creator: Pipes, Wesley O'Feral, Jr.
Description: The Problem of the cause and control of tastes and odors in water supplies has been the subject of a great many investigations during the last half-century; however, many questions in this field remain to be answered. Theories relating to the cause of tastes and odors occurring in water are still rather numerous and, at present, only a few of them are compatible. Although several procedures have been employed for the eradication of tastes and odors from water supplies, none of them are completely successful.
Contributing Partner: UNT Libraries
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
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
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