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Synthesis and Reactions of Some N-Nitrosamines
Nucleophiles react with the α-acetoxy derivative of α-hydroxybenzylbenzylnitrosamine at the carbonyl carbon of the acetoxy moiety followed by fragmentation to the very same intermediates formed by oxidative metabolism. Since α-acetoxybenzylbenzylnitrosamine has been shown to be able to acylate nucleophiles and since the nucleic acids are nucleophiles, then it is possible that this compound may cause mutations by an acylation pathway instead of or in addition to the more common alkylation pathway. The data in Part I of this dissertation should be considered in any further biological investigations of N,N-dialkylnitrosamine induced mutagenesis or carcinogenesis. The study of the synthesis, reactions, mutagenicity, and the possible correlation to compound liposolubility of cyclic N-nitrosamines was also investigated.
Date:
December 1982
Creator:
Gunn, Valerie E. (Valerie Elizabeth)
System:
The UNT Digital Library
Sex Role Stereotypes: The Effects of Instructional Salience on Clinical Judgment of Mental Health Professionals
This investigation examines how knowledge of a researcher's intent, as well as gender, influences the clinical judgments of mental health professionals in sex role research. Conscious awareness of the study's aim was manipulated by varying experimental instructions to minimize (not salient) or maximize (salient) sex role awareness. Subjects were mental health professionals who rated a protocol of a female or male pseudopatient exhibiting masculine, and lacking feminine, stereotyped behaviors. It was hypothesized that if sex biases affect judgments, more negative ratings should be assigned to a female with cross sex role behavior than to male-appropriate role behavior. Differences should be greater when subjects were unaware of the nature of the study.
Date:
August 1982
Creator:
Austad, Carol Shaw
System:
The UNT Digital Library
Postsynthetic Modifications of Glycolytic Enzymes of the Geriatric Immune System and in Fibroblasts from Premature Aging Diseases
During mitogen-induced transformation of human lymphocytes, phosphoglycerate kinase (PGK) exhibits new electrophoretic forms (pl=8.5-8.9). Electrophoresis and electrofocusing showed that the new forms are not due to expression of the autosomally linked isozyme found in semen (PGK-B; pl=9.7). The multiple electrophoretic forms are the result of protease modification of sex-linked PGK-A isozyme.When peripheral lymphocytes from young persons are stimulated in vitro with phytohemagglutinin, a selective increase in the levels of the glycolytic enzymes occurs concomitantly with blastogenesis. Human lymphocytes from a geriatric population were also subjected to mitogen stimulation. The initial levels of the enzymes were essentially identical in lymphocytes from young and old subjects as were mitogenfree cultured controls. However, during mitogen stimulation the cells from the old subjects failed to increase the glycolytic enzymes. This inability to activate glycolysis may be related to the decline in cell-mediated immunity which occurs with advancing age. Triosephosphate isomerase (TPI) has an increased thermolabile component in skin fibroblasts from patients with progeria (41.4 per cent)and Werner's syndrome (20.1 per cent) when compared with normal fibroblasts (0-3 per cent). The incorporation of various protease inhibitors failed to affect the percentages of heat-labile triosephosphate isomerases. The labile component appears to be identical to the deamidated …
Date:
August 1982
Creator:
Tollefsbol, Trygve O.
System:
The UNT Digital Library
The Generalization of Problem Identification and Remedial Plan Skills in Client-Centered Case Consultation
An analogue study examines the acquisition and generalization of problem identification and remedial plan skills following client-centered, school case consultation. Nine trained consultants interacted with 35 undergraduate female consultees in one of three intervention conditions. Conditions involved the consultants either viewing the same problem as consultees, not viewing the problem, or attention control. Consultees viewed ten minute video tapes of a problem student in a classroom, then provided written problem descriptions and remedial plans. They then received twenty minutes of consultation or control, and again wrote descriptions of the problem and remedial plans. The same procedure was repeated two day later. One week later, subjects viewed another video tape of a problem student, provided written problem descriptions and remedial plans, but received no interventions.
Date:
August 1982
Creator:
Eubanks, Ron R. (Ron Ray)
System:
The UNT Digital Library
GC/MS Analysis of Chlorinated Organic Compounds in Municipal Wastewater After Chlorination
A study has been conducted for the qualitative and Quantitative analysis of chlorinated organic compounds in water. The study included the adaptation of Amberlite XAD macroreticular resin techniques for the concentration of municipal wastewater samples, followed by GC/MS analysis. A new analytical method was developed for the determination of volatile halogenated organics using liquid-liquid extraction and electron capture gas chromatography. And, a computer program was written which searches raw GC/MS computer files for halogen-containing organic compounds.
Date:
August 1982
Creator:
Henderson, James E. (James Edward)
System:
The UNT Digital Library
The Perceptions of Secondary School Principals in Oyo State, Nigeria Toward Selected Educational Issues
Nigeria's educational environment has witnessed rapid and wide-spread changes within the last five years to the extent that enormous pressures are being put upon the practitioners. The introduction of universal free primary education in 1976 and the establishment of the national policy on education in 1977 are two of the major reasons for these changes. Educational critics have discussed issues affecting education in Nigeria generally and in Oyo State particularly. The practitioners have continuously come under severe attack for the apparent shortcomings brought by these changes. It was viewed that principals could speak out regarding the seriousness of such educational issues which the critics have repeatedly emphasized. The two purposes of this study were to determine the perceptions of secondary school principals regarding the seriousness of selected educational issues; and to determine whether there were significant differences in the perceptions that could be ascribed to zonal location of schools, age of principals, enrollment, and years of experience as principals.
Date:
August 1982
Creator:
Alege, Benjamin O.
System:
The UNT Digital Library
Validation and Investigation of the Four Aspects of Cycle Regression: A New Algorithm for Extracting Cycles
The cycle regression analysis algorithm is the most recent addition to a group of techniques developed to detect "hidden periodicities." This dissertation investigates four major aspects of the algorithm. The objectives of this research are 1. To develop an objective method of obtaining an initial estimate of the cycle period? the present procedure of obtaining this estimate involves considerable subjective judgment; 2. To validate the algorithm's success in extracting cycles from multi-cylical data; 3. To determine if a consistent relationship exists among the smallest amplitude, the error standard deviation, and the number of replications of a cycle contained in the data; 4. To investigate the behavior of the algorithm in the predictions of major drops.
Date:
December 1982
Creator:
Mehta, Mayur Ravishanker
System:
The UNT Digital Library
Livestock Legacy: A History of the Fort Worth Stockyards Company 1893-1982
This dissertation outlines the creation and history of the Fort Worth Stockyards Company from its conception to the time of this dissertation's publication. The Fort Worth Stockyards Company was created by Greenleif W. Simpson and Louville V. Niles. This company would soon cement Fort Worth as the premier livestock producer in America, soon surpassing Chicago.
Date:
August 1982
Creator:
Pate, J'Nell L.
System:
The UNT Digital Library
The Concept of "Infusion" in Curriculum Change: A Study in Knowledge Utilization
In mandating new curriculum, state legislatures frequently have opted to require school districts to "infuse" new content rather than adopt a new course. The lack of procedural guidelines in these legislative mandates leaves curriculum specialists to struggle with an "infusion dilemma," the problem of implementing the new curriculum without knowing how it should appear, once implemented. The purpose of this study was to examine interpretations of infusion held by persons responsible for operationalizing an infusion mandate. The interpretations of "infusion" held by people concerned with the implementation of the 1977 Economic Education Act in Texas were investigated. Selected legislators, state agency personnel, curriculum consultants, economics educators, and classroom teachers were interviewed about the concept and process of infusion.
Date:
May 1982
Creator:
Hirsh, Stephanie Abraham
System:
The UNT Digital Library
Internal vs. External Imagery as a Mental Preparation When Applied by Intermediate League Bowlers
Mental preparation is an important component in athletic performance. Mental preparation often involves imagery of the actual execution of the physical act. Imagery may be either "external" or "internal." External imagery occurs when people view themselves performing an act from the perspective of an external observer. Internal imagery requires that the person feel those sensations that are involved while participating in a physical act. The assumption that internal imagery will be more likely to improve athletic performance was tested using intermediate league bowlers for a period of ten weeks.
Date:
May 1982
Creator:
Barnes, Patrick Richard
System:
The UNT Digital Library
A Comparison of the Backgrounds, Functions, and Perceptions of Men and Women Presidents of Postsecondary Educational Institutions
The problem with which this study is concerned is to compare the backgrounds, performance functions, and perceptions of men and women presidents of postsecondary educational institutions in the United States. Based on the comparisons stated in the problem, a three-part survey instrument was devised and sent to the 181 women presidents of postsecondary educational institutions and to a comparable number of men presidents of institutions having the same locus of control (Roman Catholic, independent, public, Presbyterian, and profit) and similar enrollments; 131 matched pairs of presidents responded, which represents a 72 per cent response rate. Because there were five groups and twelve subgroups of the population to statistically treat in relation to 130 variables, the data findings are numerous. Based on data analyses, the following conclusions appear to be warranted.
Date:
May 1982
Creator:
Amend, Ruth Cameron
System:
The UNT Digital Library
Effectiveness of a Stress Reduction Training Program for Women
The problem of this study was to determine the effectiveness of a stress-reduction training program for women. The purposes were (1) to compare the training program with a group counseling program, (2) to determine the effect of the selected personality characteristics of field dependence, perceived anxiety, and anxiety proneness on perceived stress, and (3) to provide counselors with information concerning the reduction of stress in women.
Date:
May 1982
Creator:
English, Dorilyn
System:
The UNT Digital Library
Picosecond Laser-Induced Transient Gratings and Anisotropic State-Filling in Germanium
We present a comparative theoretical study of the transient grating coherent effects in resonant picosecond excitation-probe experiments. Signals in both the probe and conjugate directions are discussed. The effects of recombination, non-radiative scattering and spatial and orientational diffusion are included. The analysis is applied to both a molecular and to a semiconductor model. Signal contributions from concentration and orientational gratings are distinguished and their temporal natures discussed. The theory is used to explain our recent observations in germanium. Included are discussions of picosecond transient grating self-diffraction measurements that can be understood in terms of an orientational grating produced by anisotropic (in k-space) state-filling. Though there have been predictions and indirect experimental evidence for isotropic state-filling in germanium, this is the first direct experimental indication of anisotropic state-filling in a semiconductor.
Date:
December 1982
Creator:
Boggess, Thomas F. (Thomas Frederick)
System:
The UNT Digital Library
The Relationship Between Tax Relief Implementation and Public School Finance in the State of Texas
The problem of this study is to determine whether or not Texas public schools lost revenue when constitutionally mandated tax relief measures were implemented. The study also traces the evolution of tax relief legislation in Texas from 1969 to 1980. Superintendents from randomly selected school districts identified educational program adjustments required if revenues were reduced. Superintendents also identified educational and property tax issues of concern to district constituents.
Date:
May 1982
Creator:
Johnson, Scherry F. (Scherry Faye)
System:
The UNT Digital Library
Locus of Control and Adjustment to Retirement
Locus of desired control and participation in a retirement preparation program was investigated in relation to retirement attitudes and adjustment. Fifty-nine subjects, consisting of older workers and retirees from a large southwestern corporation, comprised the sample. An experimental group, consisting of 12 subjects, completed questionnaires prior to and following their participation in the retirement preparation program. A control group, consisting of 15 subjects, completed the same questionnaires at approximately the same times as did the experimental group, but did not receive retirement preparation. A third group, consisting of 20 retirees who had a previous retirement preparation experience and 12 retirees who had not had such a retirement preparation experience, completed similar questionnaires.
Date:
December 1982
Creator:
Abel, Bruce Jules
System:
The UNT Digital Library
Quest for Equality: An Historical Overview of Women's Rights Activism in Texas, 1890-1975
This study presents a chronological examination of women's rights activism. The first three chapters cover the origin, growth, and success of the Texas woman suffrage movement. Chapter Four examines the issues of interest to Texas women after the right to vote was achieved, including birth control, better working conditions, unionization, jury duty, and married women's property rights. The last chapters explore the origins, growth, and success of the movement to secure an Equal Legal Rights Amendment to the state constitution, and its immediate aftermath. Sources include manuscript collections, interviews, newspaper and magazine accounts, and government documents.
Date:
August 1982
Creator:
Gammage, Judie Walton
System:
The UNT Digital Library
Haptic Visual Sensory Integration: A Comparison Between Normal, Schizophrenic, and Brain Damaged Groups
Neuropsychological tests have been used in differentially diagnosing schizophrenic and brain damaged populations. Research indicated some subgroups of schizophrenia exhibit certain symptoms of brain damage; and that schizophrenia involves difficulty in sensory integration. The Haptic Visual Discrimination Test (HVDT) designed to test tactilevisual integration, Bender Gestalt, and Information and Digit Symbol subtests of the WAIS were used to test performance abilities of forty schizophrenic subjects, forty subjects medically diagnosed as brain damaged (10 right hemisphere, 10 left hemisphere, and 20 diffuse), and normals as defined by the standardized age norm scores.
Date:
August 1982
Creator:
Wigodsky, Ann
System:
The UNT Digital Library
The Efficacy of Utilizing the Adaptive Behavior Inventory for Children for Educational Planning Purposes
The study investigated adaptive behavior, as measured by the Adaptive Behavior Inventory for Children (ABIC), in diagnosing mental retardation among elementary school age children who were referred for special education services. Specifically, the study attempted to determine whether or not those children diagnosed as not mentally retarded and denied special education services on the basis of the ABIC data were statistically different, on the variables of intellectual development, academic achievement, and classroom behavior, from those children who were diagnosed mentally retarded and accepted for special education services on the basis of the ABIC data. Further, the study investigated the relationship between adaptive behavior and the prediction of academic achievement in elementary school age children.
Date:
May 1982
Creator:
Tiritilli, Wayne E. (Wayne Ernest)
System:
The UNT Digital Library
Test Anxiety and Exam-Taking Skills as Mediators of Information Processing in College Students
Cognitive-attentional test anxiety theory posits that test-anxious individuals direct attention internally, thus interfering with task-relevant information processing. Nevertheless, working-memory deficits are often obscured by compensatory exertion of increased effort by anxious subjects on cognitive tasks. Failure to identify anxietyspecific performance decrements has led some authors to replace the test anxiety construct with one emphasizing skill deficiencies. This investigation examined whether information-processing deficits are inherent sequelae of test anxiety or merely reflect lowered exam-taking ability in test-anxious persons.
Date:
August 1982
Creator:
Paulman, Ronald George
System:
The UNT Digital Library
The Development of a Wellness Instrument to Predict the Use of Accident and Health Insurance
The problem with which this study was concerned is that of developing an instrument for predicting the use of accident and health insurance. The purposes of the study were to translate selected theoretical descriptions of wellness into discrete components of behavior, to develop a valid and reliable self-report instrument, and to determine the correlation between wellness behaviors and a person's use of accident and health insurance. Content validity was established by a panel of judges, each of whom was selected on the basis of professional concern for the areas of interest in health contained in the instrument. The original instrument of fifty-five items was increased by three items resulting in a fifty-eight item instrument, which was then approved by each of five judges.
Date:
August 1982
Creator:
Hess, Dixie Lee Cooley
System:
The UNT Digital Library
The Effects of Grade Retention on the Academic Achievement of Elementary School Pupils
This study was undertaken in order to assess the effects of elementary school grade retention on the academic achievement of pupils. For each analysis in the study, norm-referenced standardized achievement tests were used as the dependent variable. Percentile rank score means in reading, language, and mathematics served as achievement indicators.
Date:
May 1982
Creator:
Powell, Edwin Dan
System:
The UNT Digital Library
The Social Thought of Sigmund Freud
Sociological interest in psychoanalytic thought, which began early in this century, has thus far emphasized the implications of Sigmund Freud's clinical discoveries. However, beginning in 1912, Freud produced a series of works which addressed social themes. These works included Totem and Taboo, Group Psychology and the Analysis of the Ego, The Future of an Illusion, Civilization and its Discontents, and Moses and Monotheism, as well as a number of papers dealing with social themes. This study began with a review of the social and intellectual influences on Freud's life and thought. Then a content analysis of Freud's social writings, identified above, was undertaken, to assess the significance for contemporary social theory of Freud's social thought. Categories for analysis were constructed: Society: Social Origins, Social Control and Social Change; Social Groups; the Family; Religion. Freud's ideas concerning these social categories and social institutions were explicated and an assessment of Freud as a social theorist was undertaken.
Date:
May 1982
Creator:
Berliner, Arthur Kermit
System:
The UNT Digital Library
Synthesis of Ketene Thioacetals and Their Monosulfoxide Derivatives and the Thermal Rearrangements of Diallylic Ketene Thioacetals
Ketene dimethyl thioacetal monosulfoxide was prepared in 68% overall yield in two steps starting from methylmagnesium chloride. The yield of dithioacetic acid was improved significantly by employing tetrahydrofuran as solvent and using elevated temperatures. A one-pot synthesis of ketene thioacetals from alkyl halides was developed and several ketene thioacetals were prepared by this method. Direct oxidation of ketene thioacetals using m-chloroperoxybenzoic acid provided a general route to ketene thioacetal monosulfoxides. In cases where E and Z isomeric ketene thioacetal monosulfoxides were possible, the E/Z isomeric ratio increased as the substituents on the ketene double bond was increased in size.
Date:
August 1982
Creator:
Kaya, Riza
System:
The UNT Digital Library
Investigation of the Interaction of CO Laser Radiation with n-InSb
The Shubnikov-de Haas magneto-resistance oscillations and photoconductivity were experimentally studied in order to investigate the interaction of CO laser radiation with n-InSb at liquid helium temperatures. The roles of various absorption mechanisms on these effects were considered, particularly near the intrinsic band edge. From these measurements an effective electron temperature Tâ‚‘ was defined that increased or decreased under illumination, depending upon the strength of the applied electric field.
Date:
December 1982
Creator:
Hanes, Larry Kenneth
System:
The UNT Digital Library