Search Results

Evidence for the Interaction of GTP with Rat Liver Glyoxalase II

Description: Glyoxalase 11, the second enzyme of the glyoxalase system, hydrolyzes S-D-lactoylglutathione (SLG) to regenerate glutathione (GSH) and liberate free D-lactate. It was found that GTP binds with Gil from rat liver and inhibits Gil activity. Preincubation experiments showed that the binding is relatively tight, since more than 15 minutes are required to release GTP from the complex following dilution. Inhibition kinetics studies indicate that GTP is a "partially competitive inhibitor"; Thus, it would appear that the binding sites for substrate (SLG) and inhibitor (GTP) are different, but spatially close. Glyoxalase 11 binds to a GTP affinity medium, and with polyacrylamide gel electrophoresis, Gil has a higher relative mobility when GTP is present (ATP has no effect). The functional consequences of GTP binding with a specific site on Gil are still unclear. It is speculated that Gil may interact with tubulin by serving as a dissociable GTP carrier, delivering GTP to the tubulinGTP binding site, and thus facilitating tubulin polymerization.
Date: December 1991
Creator: Yuan, Win-Jae
Partner: UNT Libraries

Toward a Critique of the Message Construct in Communication

Description: The idea of an inherent structure of meaning in human communication is identified as the message construct. Traces of the construct in textbook models of the basic communication process and in popular magazine images of communication are examined. The argument is raised that objectifying the message has resulted in a paradigm which focuses disproportionately on explicit, representational, and instrumental aspects of communication. An alternative conception is proposed which would take into account implicit, constitutive, and generative aspects.
Date: August 1991
Creator: Wilson, John K. (John Kenneth)
Partner: UNT Libraries

Factor Analysis of Health Concerns in the Chronic Back Pain Patient-MMPI2

Description: The purpose of this study was to analyze the factor structure of items pertaining to health on the Minnesota Multiphasic Personality Inventory (MMPI2) for chronic back pain patients in comparison to a control group. The results may be used as groundwork for developing an MMPI2 subscale to describe this population. The groups differed in the sequence of the resulting factors and the percentage of variance accounted for by each factor. The factors extracted when evaluating the control group were titled in order: Poor Physical Health, Digestive Difficulties, Equilibrium, Depression/Malaise, and Multiple Somatic Complaints. Resulting factors for the pain group were: Depression/Malaise, Digestive Difficulties, Multiple Somatic Complaints, Headaches/Dizziness, and Neurological Reaction/Poor Physical Health.
Date: August 1991
Creator: McGee-Hall, Joanne M. (Joanne Moore)
Partner: UNT Libraries

Sleep Patterns and Chronic Pain

Description: Sleep, emotions and pain are intimately connected, physiologically, by their location and utilization of the same brain centers and neurotransmitters. Sleep disturbances have been clinically observed in chronic pain populations; yet, no treatment program has formally addressed this aspect of patient care. It is hypothesized that a pain population (PN) will differ significantly from a non-injured workforce (WF) when reviewing quantitative and qualitative sleep data. This study strongly supports that sleep disturbances and socioeconomic decrements exist in chronic pain patients. Forty-seven variables were surveyed and 13 were found to show significant differences between the groups and seven were found to discriminate between the PN and WF groups at less than the .0001 level. A discriminant analysis was performed to determine the smallest model which could efficiently classify cases, according to successive root variables. The major discriminators are pain levels, medication, amount of sleep obtained and number of awakenings.
Date: August 1991
Creator: Kellen, Rebecca Margaret
Partner: UNT Libraries

Synthesis and Kinetic Mechanism Study of Phosphonopeptide as a Dead-End Inhibitor of cAMP-Dependent Protein Kinase

Description: DL-2-Amino-4-phosphonobutyric acid, an isostere of phosphoserine, was incorporated into the heptapeptide sequence, Leu-Arg-Arg-Ala-(DL-2-amino-4-phosphonobutyric acid)-Leu-Gly, for kinetic mechanistic studies of the cAMP-dependent protein kinase. To block the phosphono hydroxyl groups, methyl, ethyl and 4nitrobenzyl esters were studied as possible protecting groups. The phosphono diethyl ester of the N-Fmoc-protected amino acid was utilized in the synthesis of the heptapeptide. Two configurational forms of the protected peptide were obtained and were separated by C18-reverse phase HPLC. Characterization of the two isomeric forms was accomplished by 3 1P NMR, 1H NMR, 13C% NMR and amino acid analysis. The protecting groups of the isomeric phsophonopeptides were removed by HBr/AcOH and purified by cation exchange HPLC. Both phosphonopeptides were found to be inhibitors of the cAMP-dependent protein kinase, having Ki values of 0.6 mM (peptide A) and 1.9 mM (peptide B).
Date: December 1991
Creator: Yang, Chunhua
Partner: UNT Libraries

Personality Profiles of Hospitality Students: A Comparison of These Traits to Those Preferred by the Hospitality Industry

Description: One problem facing the hospitality industry today is turnover. Management turnover rates of 50 and 75 percent continue to plaque all segments of the industry. Personality type theory holds that people are happier in environments that are compatible with their personalities. This study examines 229 undergraduate students enrolled in hospitality education at the University of North Texas. The Myers Briggs Type Indicator was administered to these students to determine their predominant personality types, and to compare these types to those desired by hospitality industry professionals for success within the industry. Variables such as gender, work experience, and classification were also examined in comparison to student personality types.
Date: December 1991
Creator: Martin, Lynda (Lynda Jean)
Partner: UNT Libraries

Pre-Steady State Kinetics of the NAD-Malic Enzyme from Ascaris suum in the Direction of Oxidative Decarboxylation of L-Malate

Description: Stopped-flow experiments in which the NAD-malic enzyme was preincubated with different reactants at near saturating substrate concentrations suggest a slow isomerization of the E:NAD:Mg complex. The lag is eliminated by preincubation with Mg˙² and malate suggesting that the formation of E:Mg:Malate either bypasses or speeds up the slow isomerization step. Circular dichroic spectral studies of the secondary structural changes of the native enzyme in the presence and absence of substrates supports the existence of conformational changes with NAD˙ and malate. Thus, a slow conformational change of the E:NAD:Mg complex is likely one of the rate-limiting steps in the pre-steady state.
Date: December 1991
Creator: Rajapaksa, Ranjani, 1949-
Partner: UNT Libraries

Linking Parent Relationships with Intimacy in a Selected Group of Young Adult University Students

Description: Literature suggests positive relationships with caregivers during childhood facilitate intimacy in young adulthood. The three hypotheses in this inquiry related to the students' relationship between parental intimacy and friend intimacy, gender differences in intimacy, and the perceived acceptance of parents. Subjects were 322 male and female university students, aged 17 through 25 years. Most were single, white, and middle class. During class the Children's Report of Parental Behavior, the Miller Social Intimacy Scale, and a demographic sheet were administered. ANOVA revealed that relationships between parental intimacy and friend intimacy were not significant. Females reported greater intimacy with friends than males. For both sexes, correlations between recalled parental intimacy and acceptance were higher for mothers than fathers.
Date: August 1991
Creator: Roland, Sandra Dodson
Partner: UNT Libraries

A Comprehensive Neuropsychological Screening Device for Adults: Reliability of Parallel Forms

Description: The purpose of the present study was to evaluate the reliability of parallel-forms of the Comprehensive Neuropsychological Screening Device (CNS). Forty-five subjects ranging in age from 16 to 69 were administered Form A and Form B of the CNS at two week intervals. Results indicated that the CNS has adequate test-retest reliability. The results suggest the applicability of using the CNS as a screening device for brain dysfunction.
Date: December 1991
Creator: Ganci, Maria
Partner: UNT Libraries

Concertino for Jazz Clarinet, Electric Viola and Symphonic Orchestra

Description: Concertino for Jazz Clarinet. Electric viola and Symphonic Orchestra is a composition of approximately fifteen minutes' duration, and is scored for two flutes (second doubling piccolo), two oboes, two Bb clarinets, two bassoons, four F- horns, two Bb trumpets, three trombones (third bass), two percussionists, solo Bb clarinet, solo electric viola and strings. The piece is divided into two movements; Andante and Canon. Concepts derived from jazz music are employed in, for example, harmony and improvisation in the solo parts, whereas the orchestration is mainly traditional. The piece is written for two great Swedish instrumentalists; Putte Wickman, clarinet, and Henrik Frendin, viola. Stylistically this work is difficult in the orchestral parts, since it uses concepts from two different musical styles, jazz and classical. Influences originate from such wide-ranging composers as Mozart, Stravinsky, Shostakovich and Chick Corea.
Date: August 1991
Creator: Holmquist, Mats G. (Mats Göran)
Partner: UNT Libraries

Luther the Augustinian: Augustine, Pelagianism and Luther's Philosophy of Man

Description: Augustine has had a large influence on the development of western theology, and nowhere is this more obvious that in Martin Luther's understanding of God, humankind and grace. Yet at the same time there are also significant differences in the two churchmen's thought. Sometimes these differences are subtle, such as their views of the state; other times they are not so subtle, such as their positions on free will or their praise of philosophy and its usefulness in sounding the depth of Christianity. In order to best explain these varying views, one must look at Augustine's and Luther's diverging opinions of man's nature where one will see that the dissimilarities are best understood in light of Luther's pessimistic view of humanity.
Date: August 1991
Creator: McGinnis, Jon D. (Jon David)
Partner: UNT Libraries

Perception of Punitive Childhood Experiences, Adult Coping Mechanisms and Psychological Distress

Description: Differences in college student's psychological well-being, extrapunitiveness, and intropunitiveness were related to the presence or absence of maltreatment during childhood years, and its acknowledgement by the student. Subjects were 56 male and 85 female undergraduate students at the University of North Texas. Subjects were given structural scale v.3 of the California Psychological Inventory (CPI), the Extrapunitive (E), and Intropunitive (I) indices of the Hostility-Direction of Hostility Questionnaire (HDHQ), and the Physical Punishment scale (PP-scale) of the Assessing Environments Questionnaire (AEIII). Results indicate no significant differences in psychological well-being, extrapunitiveness, or intropunitiveness, which would be explained by the presence of maltreatment or its acknowledgement.
Date: December 1991
Creator: McCune, Linda Wheeler
Partner: UNT Libraries

The Precipitation of Strontium Sulfate in Gels

Description: The growth of strontium sulfate precipitate by diffusion in various gels was studied by using optical transmission and confocal microscopies, scanning and transmission electron microscopies, and energy dispersive X ray fluorescence. Pure silica gel, pure agarose gel and the silica/agarose mixed gel at pH 7 - 10 were used throughout the present study. Precipitate morphology is sensitive to pH and to the nature of the growth medium. The morphology was observed as a function of time. The lack of change is presumably because of rapid depletion of the limiting reagent after the very beginning of precipitation. The problem of separating strontium sulfate precipitate from the gel medium is discussed.
Date: December 1991
Creator: Lee, Ya
Partner: UNT Libraries

The Cantatas of Jean-Philippe Rameau

Description: By the early eighteenth century, French music was tangibly influenced by the Italian style which had already permeated much of Europe. The French Cantata is symptomatic of that often disparaged influx. The cantatas of Rameau are a significant contribution to an important form. Written almost entirely in the early years of the artist's career, they hold details of his stylistic development. In the present study of Rameau's cantatas several aspects of his style are discussed as they relate both to his theoretic writings and to the various influences of the time. Examples of those stylistic elements found in the cantatas are cited and discussed. There is, as well, a comparison of the works to the poetic form standardized by Rousseau.
Date: May 1991
Creator: McManus, Catherine
Partner: UNT Libraries

A Comparison of Measures of Signal-To-Noise Ratio, Jitter, Shimmer, and Speaking Fundamental Frequency in Smoking and Nonsmoking Females

Description: Fifteen nonsmoking and fifteen smoking females 19 to 36 years of age were evaluated on measures of signal-to-noise ratio (SNR), jitter, shimmer, and speaking fundamental frequency (F0). The results indicated that: 1) there is a significant difference between female smokers and nonsmokers on measures of SNR, mean, and maximum F0 and, 2) there is no significant difference between female smokers and nonsmokers on measures of jitter, shimmer and minimum F0 . The SNR was found to be a powerful tool which is capable of distinguishing subtle vocal characteristics between the subject groups. It would appear that cigarette smoking may have an impact on the voice before distinct laryngeal pathologies are present.
Date: December 1991
Creator: Coy, Kelly (Kelly Bishop)
Partner: UNT Libraries

A History of WKY-AM

Description: The problem of this study was to document the history of radio station WKY, Oklahoma City, and to locate its place within the development of American radio broadcasting. This thesis divides WKY's history into two periods: 1920 through 1925, the years it was operated by Earl Hull, and 1926 through 1989, after it was acquired by E. K. Gaylord. The purpose of this study was to record the history of the oldest radio station operating west of the Mississippi River, its effect on the broadcast industry in general, and its effect on Gaylord Broadcasting Corporation, the parent organization. The study also explored the innovations. in both programming and engineering that caused the station to grow into one of the most popular radio stations in the Southwest, as well as its decline in recent years.
Date: May 1991
Creator: Meeks, Herman Ellis
Partner: UNT Libraries

Algebraic Number Fields

Description: This thesis investigates various theorems on polynomials over the rationals, algebraic numbers, algebraic integers, and quadratic fields. The material selected in this study is more of a number theoretical aspect than that of an algebraic structural aspect. Therefore, the topics of divisibility, unique factorization, prime numbers, and the roots of certain polynomials have been chosen for primary consideration.
Date: August 1991
Creator: Hartsell, Melanie Lynne
Partner: UNT Libraries

A Survey of Landowner Attitudes Toward the Construction of Lake Ray Roberts

Description: Documentation of social impacts resulting from the construction of Lake Ray Roberts is to be incorporated into a two year post-impoundment study. Research objectives are to: 1) locate current residences of landowners and previous landowners who were displaced; 2) determine social impacts resulting from construction of Lake Ray Roberts; 3) document degree of satisfaction with current living conditions; 4) document landowners' degree of satisfaction associated with COE negotiations; 5) document landowners' observations. Landowners were identified by telephone and sent a mail-back questionnaire. Respondents were generally happy with current residences and communities. While courtesy and sufficient information were provided by the COE, respondents would have preferred for property settlements to be more consistent and timely.
Date: August 1991
Creator: Norris, Paula Sue
Partner: UNT Libraries

Pyrimidine Nucleoside Metabolism in Pseudomonads and Enteric Bacteria

Description: Metabolic differences in the strategies used for pyrimidine base and nucleoside salvage were studied in the pseudomonads and enteric bacteria. Fluoro--analogs were used to select mutant strains of E. coli, S. typhimurium, P. putida, and P. aeruginosa blocked in one or more of the uracil and uridine salvage enzymes. HPLC analysis of cell-free extracts from wild-type and mutant strains examined the effectiveness of the selections. Evidence was found for cytidine kinase in Pseudomonas and for an activity that converted uracil compounds to cytosine compounds. Using media supplemented with 150 μg of orotic acid per ml, P. putida SOC 1, a Pyr, upp mutant which utilizes orotic acid as a pyrimidine source was isolated for the first time in any study.
Date: December 1991
Creator: Scott, Allelia Worrall
Partner: UNT Libraries

Static and Flow Properties of Dilute Polymer Solutions

Description: Small weight percentages of certain high-molecular weight polymers added to liquids in turbulent flow through conduits can result in dramatic friction reduction. Although many current and potential uses of the drag reduction phenomenon exist, there is a fundamental problem: drag reduction efficacy decreases rapidly with flow time due to the mechanical degradation in flow of the added polymer. In this thesis study, dilute aqueous solutions of polyacrylamide were tested under turbulent flow conditions in an attempt to determine where mechanical degradation in flow occurs.
Date: August 1991
Creator: Whang, Kyu-ho
Partner: UNT Libraries

The Effects of Age-Graded Associations on the Political Activism of the Elderly

Description: Although the graying of the American society has been well documented, the question as to whether the elderly populace will indeed become a political factor has yet to be determined. Some studies indicate that the elderly will soon develop the consensus needed for political action; other studies counter that the elderly will never be a viable political factor. Among the determinants listed as influencing the political participation equation are standard socioeconomic variables (e.g., race, social status, education, and income). These factors have been studied extensively (Campbell 1960; Key 1950; Milbrath 1965; Nagel 1987; Rose 1965). Trela recently added an item that could possibly influence the political activism of the elderly: membership in age-graded associations. This study addresses the questions raised by Trela (1971), namely, whether age-graded associations influence the political activity of senior citizens, and if so, in what direction elderly participation is swayed. Unlike previous reports, the preliminary data gathered for this study suggest that the age-graded associations of the elderly cannot accurately predict their political activism.
Date: December 1991
Creator: Mata, Joe I. (Joe Israel)
Partner: UNT Libraries

Two Movements from the Delphic Suite: A Composition for Orchestra

Description: Delphic Suite is a composition for orchestra that depicts specific events narrated in Homer's epic tale, Odyssey. For the purpose of this thesis the second movement, Raid on Ismarus, has been omitted so as to focus on the melodic, rhythmic, and harmonic structures of the first movement, Lament from Troy, and the third movement, Ruler of the Winds. Each of these musical parameters will be analyzed in order to illustrate the Suite's imitation of compositional techniques exemplified in the music of Homer's era, and the musical results obtained by juxtaposing those parameters upon a twentieth-century tonal scheme that provides the Suite with an eclectic ambience.
Date: December 1991
Creator: Walczyk, Kevin, 1964-
Partner: UNT Libraries

Scriabin: A New Theory of Harmony and Structure

Description: The thesis speculates upon the source of Scriabin's pitch selection in several of his atonal works, concluding that Scriabin's "principle" stems from his own "mystic chord," its inversion at the major third, and the transposition of these two chords at the tritone. These four chords share the same invariant harmonic basis, Scriabin's characteristic French-sixth sonority. The quartet of chords combine to form two nine-note scales, each containing as a subset the octatonic scale. The thesis demonstrates how Scriabin composed his works in harmonic blocks, utilizing only the notes from these scales. The thesis traces Scriabin's atonal style back to his tonal period. His fascination with tritone adjacencies and relationships is discussed, and serves to support the theory. Other harmonic and linear theories are discussed. Also, the thesis shows how Scriabin used these scales structurally in his works.
Date: December 1991
Creator: McVay, Michael (Michael Jones)
Partner: UNT Libraries

Rhetorical Figures and Their Uses in I Henry IV

Description: This study is concerned with the artistic use of classical rhetorical figures in Shakespeare's I Henry IV.After the Introduction, Chapter II examines the history of rhetoric, focusing on the use of the rhetorical figures in Ancient Greece, Ancient Rome, and Medieval Europe. Chapter III investigates rhetorical principles and uses of the rhetorical figures during the English Renaissance and examines the probable influence of rhetoric and the figures on William Shakespeare. Chapter IV discusses themes, characterization, structure, and language in I Henry IV and presents the contribution of the rhetorical figures to the drama's action and characterization. Chapter V considers the contribution of the figures to the major themes of I Henry IV and concludes that the figures, when used with other artistic elements, enhance meaning.
Date: December 1991
Creator: Martin, Brenda W.
Partner: UNT Libraries