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 Collection: UNT Theses and Dissertations
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Pyrimidine Biosynthesis in the Genus Streptomyces : Characterization of Aspartate Transcarbamoylase and Its Interaction with Other Pyrimidine Enzymes

Pyrimidine Biosynthesis in the Genus Streptomyces : Characterization of Aspartate Transcarbamoylase and Its Interaction with Other Pyrimidine Enzymes

Date: May 1998
Creator: Hughes, Lee E. (Lee Everette)
Description: Aspartate transcarbamoylase (ATCase) of Streptomyces was characterized and its interaction with other pyrimidine enzymes explored.
Contributing Partner: UNT Libraries
Quantum-Confined CdS Nanoparticles on DNA Templates

Quantum-Confined CdS Nanoparticles on DNA Templates

Date: May 1998
Creator: Rho, Young Gyu
Description: As electronic devices became smaller, interest in quantum-confined semiconductor nanostructures increased. Self-assembled mesoscale semiconductor structures of II-VI nanocrystals are an especially exciting subject because of their controllable band gap and unique photophysical properties. Several preparative methods to synthesize and control the sizes of the individual nanocrystallites and the electronic and optical properties have been intensively studied. Fabrication of patterned nanostructures composed of quantum-confined nanoparticles is the next step toward practical applications. We have developed an innovative method to fabricate diverse nanostructures which relies on the size and a shape of a chosen deoxyribonucleic acid (DNA) template.
Contributing Partner: UNT Libraries
A Quenchofluorometric Study of Polycyclic Aromatic Hydrocarbons in Molecularly Organized Media

A Quenchofluorometric Study of Polycyclic Aromatic Hydrocarbons in Molecularly Organized Media

Date: May 1998
Creator: Pandey, Siddharth
Description: Detection, identification and separation of polycyclic aromatic compounds in environmental samples are of extreme importance since many of these compounds are well known for their potential carcinogenic and/or mutagenic activities. Selective quenching of molecular fluorescence can be utilized effectively to analyze mixtures containing different polycyclic aromatic hydrocarbons. Molecularly organized assemblies are used widely in detection and separation of these compounds mainly because of less toxicity and enhanced solubilization capabilities associated with these media. Feasibility of using nitromethane and the alkylpyridinium cation as selective fluorescence quenching agents for discriminating between alternant versus nonalternant polycyclic aromatic hydrocarbons (PAHs) is critically examined in several molecularly organized micellar solvent media. Fluorescence quenching is used to probe the structural features in mixed micelles containing the various combinations of anionic, cationic, nonionic and zwitterionic surfactants. Experimental results provide valuable information regarding molecular interactions between the dissimilar surfactants.
Contributing Partner: UNT Libraries
The Relationship between Parental Empathy and Parental Acceptance and the Effect of Filial Therapy Training on this Relationship

The Relationship between Parental Empathy and Parental Acceptance and the Effect of Filial Therapy Training on this Relationship

Date: May 1998
Creator: Poon, Wai-Chi Samuel
Description: This study was conducted to determine the relationship between parental empathy (PE) and parental acceptance (PA) and the effect of filial therapy training (FTT) on this relationship. Filial therapy training is a parent education program in which the goal is the development of PE and PA. The Measurement of Empathy in Adult-Child Interaction (MEACI) and the Porter Parental Acceptance Scale (PPAS) are two widely used instruments in filial therapy studies to measure PE and PA, respectively. The purpose of this study was to determine the relationship between parental empathy and parental acceptance, and the effect of filial therapy training on this relationship. Specifically, this study was designed to investigate the correlations between the MEACI and the PPAS.
Contributing Partner: UNT Libraries
Relationship of Leadership Importance Ratings and Leadership Competency Ratings Across Adjacent Management Levels

Relationship of Leadership Importance Ratings and Leadership Competency Ratings Across Adjacent Management Levels

Date: May 1998
Creator: Goldman, Joshua L. (Joshua Lee)
Description: Effective leadership can and does influence organizational performance. The Executive Success Profile, a multi-rater feedback instrument, was used to gather perception data on 51 executives and 310 senior managers of a large Fortune 500 electronics manufacturing company in regards to three critical leadership dimensions: visionary thinking, empowering others, and global perspective. Paired t-tests were run to compare the means of the two samples. Significant differences were found between executives and senior managers on the perceived importance of and ability to perform on the empowering others dimension. Additionally, correlational measures indicate a statistically significant relationship between importance and competence ratings on the empowering others and global perspective dimensions for executives, and on the empowering others dimension for senior managers.
Contributing Partner: UNT Libraries
Reproductive Decision Making Among Zambian Couples: Agreement and Conflict

Reproductive Decision Making Among Zambian Couples: Agreement and Conflict

Date: May 1998
Creator: Wilson, Judy Fralick
Description: Fertility studies have often focused on the behavioral and attitudinal attributes of women with regard to fertility. Until recently, the role of men in fertility studies have often been ignored within much of the literature concerning fertility decisions. The focus of this study will examine if differences exist between husbands and wives with regard to the following four aspects of fertility decisions: spacing of children, methods of family planning, sex preference, and desired family size. The data were collected from 125 households in Kitwe, Zambia. Identical questionnaires were submitted to the husbands and wives during separate interviews. Content analysis was used to analyze the data. Overall, no significant differences exist among husbands and wives with regard to the four aspects of fertility decisions being researched.
Contributing Partner: UNT Libraries
Responses of Cultured Neuronal Networks to the Cannabinoid Mimetic Anandamide

Responses of Cultured Neuronal Networks to the Cannabinoid Mimetic Anandamide

Date: May 1998
Creator: Morefield, Samantha I. (Samantha Irene)
Description: The effects of cannabinoid agonists on spontaneous neuronal network activity were characterized in murine spinal cord and auditory cortical cultures with multichannel extracellular recording using photoetched electrode arrays. Different cultures responded reproducibly with global decreases of spiking and bursting to anandamide and methanandamide, but each agonist showed unique minor effects on network activity. The two tissues responded in a tissue-specific manner. Spontaneous activity in spinal tissue was terminated by 1 μM anandamide and 6.1 μM methanandamide. Cortical activity ceased at 3.5 μM and 2.8 μM respectively. Irreversible cessation of activity was observed beyond 8 μM for both tissues and test substances. Palmitoylethanolamide, demonstrated that CB2 receptors were not present or not responsive. However, the data strongly suggested the presence of CB1 receptors.
Contributing Partner: UNT Libraries
A Rhetorical Analysis of Major Oil Companies' Advertisements in 1990 : A Semiotic Approach

A Rhetorical Analysis of Major Oil Companies' Advertisements in 1990 : A Semiotic Approach

Date: May 1998
Creator: Barton, Mica Waggoner
Description: This study demonstrates how discourse is used to construct popular myths. This study analyzes magazine advertisements used by businesses in overcoming the rhetorical problem posed by a public opinion that blamed them for environmental problems. This study shows how businesses used advertisements to construct a popular myth that businesses were doing their part in overcoming the environmental crisis.
Contributing Partner: UNT Libraries
The Role and Contributions of Independent Sales Representatives in the Relationship Between Merchandise Suppliers and Small Retailers: Dynamic Interactions in the Channel

The Role and Contributions of Independent Sales Representatives in the Relationship Between Merchandise Suppliers and Small Retailers: Dynamic Interactions in the Channel

Date: May 1998
Creator: Gruben, Kathleen H. (Kathleen Hall)
Description: Small retailers are searching for a basis of competitive advantage to compete against larger retailers. The independent sales representative (rep) may represent such a basis. Little is known about how the role of reps and their performance is perceived by suppliers and retailers. We do not know what is expected from reps, if the reps' performance meets suppliers and retailers expectations, or whether met expectations lead to a basis of competitive advantage. Primarily, the study was designed to identify the role and contributions reps in the interactions between the supplier and retailer in the channel of distribution.
Contributing Partner: UNT Libraries
The Role and Functions of Diversity Affairs Centers' Chief Personnel Officers at Public Universities in Texas

The Role and Functions of Diversity Affairs Centers' Chief Personnel Officers at Public Universities in Texas

Date: May 1998
Creator: David, John Seh
Description: The problem of this study concerns the role and functions of diversity affairs centers' chief personnel officers at public universities in Texas. Because of the political and evolving nature of diversity affairs offices, it is important to understand the functions and types of services these centers provide with respect to institutional goals, missions, and student retention at public universities in Texas.
Contributing Partner: UNT Libraries