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Statesman from Texas, Roger Q. Mills
This is a biography of Roger Quarles Mills and his contributions to Texas history.
Date:
August 1954
Creator:
Purifoy, Russell Albritton, Jr.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Project PACE on Adolescent Females' Physical Activity Readiness
This study evaluated the effects of Project PACE, a program designed to increase physical activity, on the physical activity level and selected psychosocial variables of sedentary adolescent females ages 12 to 18. Psychosocial variables included self efficacy, attitude, perception of barriers, perceived social support, and knowledge. Of the 69 participants, 40 were enrolled in the treatment group and 29 were enrolled in the control group at the start of the study. The only significant differences were found for attitudes towards physical activity at base line. Findings from this study suggest that implementation of Project PACE protocol in school settings may produce some positive effects, but no significant findings were detected.
Date:
May 1998
Creator:
Williams, Christy Nicole
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
N-Acylethanolamines and Plant Phospholipase D
Recently, three distinct isoforms of phospholipase D (PLD) were identified in Arabidopsis thaliana. PLD α represents the well-known form found in plants, while PLD β and γ have been only recently discovered (Pappan et al., 1997b; Qin et al., 1997). These isoforms differ in substrate selectivity and cofactors required for activity. Here, I report that PLD β and γ isoforms were active toward N-acylphosphatidylethanolamine (NAPE), but PLD α was not. The ability of PLD β and γ to hydrolyze NAPE marks a key difference from PLD α. N-acylethanolamines (NAE), the hydrolytic products of NAPE by PLD β and γ, inhibited PLD α from castor bean and cabbage. Inhibition of PLD α by NAE was dose-dependent and inversely proportional to acyl chain length and degree of unsaturation. Enzyme kinetic analysis suggested non-competitive inhibition of PLD α by NAE 14:0. In addition, a 1.2-kb tobacco (Nicotiana tabacum L.) cDNA fragment was isolated that possessed a 74% amino acid identity to Arabidopsis PLD β indicating that this isoform is expressed in tobacco cells. Collectively, these results provide evidence for NAE producing PLD activities and suggest a possible regulatory role for NAE with respect to PLD α.
Date:
December 1998
Creator:
Brown, Shea Austin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Simulating Thermal and Chemical Spills in Coupled Cooling Reservoirs
Hot water discharges and potential chemical spills are factors that threaten water quality in cooling reservoirs of chemical and power plants. In this thesis, three models are used to analyze the impact of these factors in a particular case study.
Date:
August 1997
Creator:
Qiu, Bin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Meal Size and Type, and Level of Physical Activity on Perceived Masculinity, Femininity, Likability and Attractiveness
Previous research indicates that women are judged on the amount of food eaten and that both men and women are judged on the type of food eaten. This study is an attempt to determine whether meal size or type predominantly accounts for these findings on the variables of masculinity, femininity, attractiveness, thinness, fitness, and likability. Physical activity was also included to determine its effect on these variable. Subjects used were 313 undergraduate students. Results indicate that meal type is more influential than meal size and that physical activity significantly influences judgements of others. The results are discussed in terms of future research and relatedness to socio-cultural theories of eating disorders.
Date:
December 1994
Creator:
Hill, Christie D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Copper on Immune Responses of Largemouth Bass, Micropterus salmoides
Copper exposures of 400 μg/L for 5,10 and 15 days resulted in no significant differences in antibody titers of largemouth bass, Micropterus salmoides injected with Aeromonas hydrophila compared to control-injected bass. Twenty days of exposure did significantly increase titers. The control group had significantly lower antibody titers than either control-injected or copper-exposed.
Date:
August 1994
Creator:
Connell, Patrice M. (Patrice Michelle)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Distorted Time Perception as an Underlying Factor of Psychosis Proneness and Dissociation
Distortions in the perception of time historically have been associated with dissociation and psychosis in clinical populations. However, the relations among dissociation, psychosis, and time perception in sub-clinical populations have not been investigated. In the present study, college undergraduates scoring either normally or deviantly high on the Per-Mag were given a Dissociative Experiences Scale (DES) and a computerized time-estimation/production task. Participants scoring high on the Per-Mag obtained higher scores on the DES than participants scoring low on the Per- Mag. Per-Mag scores also correlated positively with DES scores across 608 total participants screened. The relation between dissociative and psychotic symptomatology is discussed considering dichotomous versus continuous conceptualizations of psychopathology. The effects of intelligence, social desirability, malingering, gender, and post-traumatic stress on the measures used are also discussed.
Date:
August 1995
Creator:
Koehler, Gregory C. (Gregory Charles)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Construction of a Physical Map of Moraxella (Branhamella) catarrhalis Strain ATCC25238
In order to gain a better understanding of this microorganismand its role in human pathogenesis, a physical map of Moraxella catarrhalis type strain ATCC25238 was constructed using pulsed field gel electrophoresis (PFGE) in combination with Southern hybridization techniques. Restriction endonucleases Not I, Rsr II, and Sma I were used to digest the chromosomal DNA. An overlapping circular map was generated by cross-hybridization of isolated radiolabeled fragments of Moraxella catarrhalis genomic DNA to dried PFGE gels. The number and location of the 16S and 23S ribosomal RNA genes were determined by digestion with l-Ceul enzyme and by Southern hybridization. Virulence-associated genes, the gene for β-lactamase, and housekeeping genes were also placed onto the physical map.
Date:
May 1999
Creator:
Nguyen, Kim Thuy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Upper and Lower Temperature Tolerances of Three Freshwater Game-Fish Species Exposed to Cycling Temperatures
A total of 670 critical thermal maxima (CTMax) and minima (CTMin) were determined for three freshwater fishes acclimated to three constant temperatures and a diel regimen cycling between the lowest and highest acclimation temperatures. In all species temperature tolerance was directly related to acclimation temperature and slopes relating these variables indicate that acclimation temperature has a greater influence on tolerance of low rather than high temperatures. CTMax and CTMin values generated following exposure to 32 days of oscillating temperatures indicate that in general, fishes had temperature tolerance acclimation states consistent with the average temperature and not either the highest or lowest temperature of the diel cycle.
Date:
August 1995
Creator:
Currie, Rebecca J. (Rebecca Jean)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Attenuation of Escherichia Coli Aspartate Transcarbamoylase Expressed in Pseudomonas Aeruginosa Mutant and Wild Type Strains
No apparent repression of pyr gene expression in Pseudomonas aeruginosa is observed upon addition of exogenous pyrimidines to the growth medium. Upon introduction of the subcloned Escherichia coli pyrBI genes for aspartate transcarbamoylase (ATCase) into a P. aeruginosa pyrB mutant strain, repression was observed in response to exogenously fed pyrimidine compounds. The results proved that it is possible to bring about changes in pyrimidine nucleotide pool levels and changes in transcriptional regulation of gene expression as a result. Thus, the lack of regulatory control in P. aeruginosa pyr gene expression is not due to an inability to take up and incorporate pyrimidine compounds into metabolic pools, or to an inability of the RNA polymerase to respond to regulatory sequences in the DNA but is probably due to a lack of specific regulatory signals in the promoter of the genes themselves.
Date:
December 1994
Creator:
Liu, Haiyan, 1966-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluation of a Constructed Wetland to Reduce Toxicity from Diazinon at the Pecan Creek Wastewater Treatment Plant, Denton, TX
The City of Denton Pecan Creek Wastewater Treatment Facility has periodically failed effluent toxicity testing. A Toxicity Identification Evaluation has determined that Diazinon in the effluent is contributing to the observed toxicity. Chlorpyrifos is also implicated as a factor. The City of Denton constructed a half acre experimental wetland to remove Diazinon related toxicity. Results from spiking and microcosm experiments indicate that the wetland can reduce the Diazinon.
Date:
May 1996
Creator:
Baerenklau, Amy L. (Amy Lyn)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Timed vs. Untimed Initiation Intervals and the Effects of Confidence on a Golf Putting Task
Low, moderate, and high handicap golfers, while wearing glasses with a blinder on the side, attempted 9 putts differing in length from 5 to 21 ft under timed (less than 3.5s from grounding of club to initiation of back swing) and untimed conditions in a counterbalanced design. Confidence ratings were taken prior to and following each putt. The results revealed a significant condition by handicap group interaction (p=.021). The lower handicap group had a more consistent and lower initiation interval duration than did the moderate and high handicap players. Post interviews determined that 33 of the 35 golfers felt more comfortable in the untimed condition. However, golfers' confidence levels were not significantly different in the untimed condition as compared to the timed condition.
Date:
August 1999
Creator:
Sundberg, Jeffrey D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characteristics of Intensive English Program Directors
The purpose of this study is to discover if there exists a difference between the perceived roles and functions of intensive English program (IEP) directors and what they actually are. The study is a partial replication of Matthies (1983). A total of 46 subjects participated in a nation-wide survey which asked the respondents to rate the importance of functions and skills in good job performance and in self-assessment of ability. The findings indicated that IEP directors rate the activities associated with administration higher in importance than teaching skills, yet rate themselves better at teaching overall. Additionally, the respondents have more and higher degrees in Linguistics and Applied Linguistics than previously seen by Matthies (1983).
Date:
August 1994
Creator:
Atkinson, Tamara D. (Tamara Dawn)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Heat Shock Proteins in Ascaris suum
Ascaris suum were exposed to a number of stressors, including heavy metals and both high (40°C) and low (18°C) temperatures. The 70kD and 90kD heat shock proteins (HSPs) in the different A. suum tissues were analyzed by Western blot and quantitated by Macintosh Image Program.
Date:
August 1995
Creator:
Chao, Sheng-Hao
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Evolution of Dexter and Me
The Evolution of Dexter and Me is a collection of one vignette and four short stories. All of the stories deal with young men figuring out and coping with their daily life and environment. The "Dexter stories" deal with a character I developed and evolved, Dexter, a sane young man trying to find the best way to cope in an insane system.
Date:
May 1996
Creator:
Bond, Ray (Edgar Ray)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Subcloning and Nucleotide Sequence of the xylO/PUWCMA Region from the Pseudomonas putida TOL Plasmid pDK1
The TOL plasmids of Pseudomonas putida encode enzymes required for the oxidation of toluene and other related aromatic compounds. These genes are organized into two operons, the xylUWCMABN operon (upper), and the xylXYZLTEGFJQKIH operon (lower). Here we report the nucleotide sequence of a 7107 bp segment of the TOL pDK1 plasmid encoding the region just upstream of the "upper" operon through the genes encoding xylUWCMA. Sequence analysis, comparison of base-usage patterns, codon-usage patterns, and intergenic distances between genes help support the idea that the "upper" and "lower" operons have evolved independently in different genetic backgrounds and have only more recently been brought together in TOL and related catabolic plasmids.
Date:
December 1997
Creator:
Guigneaux, Michelle M. (Michelle Marie)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of Predicted and Actual Trophic Status of Lake Ray Roberts, Texas Based on Chlorophyll A
Two years before impoundment, the trophic status of Lake Ray Roberts was predicted by applying the total phosphorus input into the Organization for Economic Cooperation and Development (OECD) eutrophication model. Predicted mean summer epilimnetic (MSE) chlorophyll a of Elm Fork arm, Isle duBois arm and Main Body were in the eutrophic category of the OECD model. Observed MSE chlorophyll a two years after impoundment of Elm Fork arm, Isle duBois and Main Body had not reached their predicted means and were at the mesotrophic-eutrophic boundary of the OECD model. Six years after impoundment, observed MSE chlorophyll a for Main Body, was closer to its predicted mean and in the eutrophic category of the OECD model. Six years after impoundment, Elm Fork arm was the most productive area of Lake Ray Roberts. Observed means of chlorophyll a, total phosphates, suspended solids and turbidity were often highest in the Elm Fork arm. Wastewater effluent from Gainesville and Valley View, TX, had an impact on productivity in Elm Fork arm.
Date:
May 1999
Creator:
Lytle, Lili Lisa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Influence of Relationship Quality and Preventability of Death on Perceptions of Funerals in Bereaved Adults
Four hundred and thirty-eight participants who had lost a close friend or family in the last 2 years completed questionnaires regarding their experiences with the funeral. Results indicated individuals emotionally close to the deceased person reported higher levels of participation in funeral rituals and greater levels of bereavement adjustment. Those emotionally distant from the deceased person reported greater satisfaction with the funeral. Individuals who viewed the deceased person as a central figure in their lives had greater participation in the funeral. Those who viewed the deceased person as a peripheral figure had higher levels of bereavement adjustment. Additionally, those who viewed the death as unpreventable reported greater satisfaction with the funeral, and had higher levels of bereavement adjustment.
Date:
August 1995
Creator:
Pinkenburg, Lisa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Wedding Ceremony: Processional, Kyrie, Alleluia!, Hosanna!, Recessional
A Wedding Ceremony is a composition of approximately 17 minutes in duration and is scored for horn in F, two trumpets in B-flat, trombone, two percussionists (timpani, roto toms, chimes, snare, triangle, suspended cymbal), 2-part boys choir, female soprano, and organ. The work consists of five parts of a mass, the Processional, Kyrie, Alleluia!, Hosanna!, and Recessional, with texted sections being taken from the Latin mass. The work is intended for a sacred wedding service of any denomination. The work was composed with the traditional aspects of the Latin mass in combination with a contemporary setting.
Date:
May 1998
Creator:
Cieminski, Theresa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Commitment as an Indicator of Turnover in First Line Manufacturing Supervision
Organizational commitment is most commonly defined as a measure of an employee's commitment to the company or larger organization. In a longitudinal study, the Organizational Commitment Questionnaire was administered to 123 first line manufacturing supervisors in a defense contracting firm. After a one year check, subjects were grouped into categories of voluntary and involuntary turnover. The results suggest that significant relationships exist among the variables of departmental commitment, turnover and tenure. However, the study failed to show any relationship between organizational commitment and turnover.
Date:
August 1994
Creator:
Tuggle, Tamara K. (Tamara Kay)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Laboratory Study of the Asiatic Clam (Corbicula fluminea Müller) as Influenced by Substrate, Food Source and Water Type
Growth of Corbicula fluminea was monitored in the laboratory. Three experiments were conducted. Experiment I utilized three substrates and one food type. Experiment II utilized three substrates and two food types. Experiments I and II were conducted to determine if substrate type or food type effected growth. Experiment III used no substrates, one food type and was conducted to determine growth response to different types of water. Clams were maintained in three substrates: sand, gravel and clay. Clams were also maintained without substrate. Growth was monitored by measuring shell length (mm) and recording the weight (mg) of clams over a period of thirty days. At the end of the test period data were evaluated for normality and homogeneity.
Date:
May 1995
Creator:
Halbrook, Courtney (Courtney Ann)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bus Ride to Liberation: a Historical Video Documentary of the Acres Homes Transit Company in Houston, Texas
The Acres Homes Transit Company in Houston, Texas is Texas' first African American owned and operated bus company. Some say it is the first in the South. The company was developed during the height of the civil rights period. It serves as an establishment of economic empowerment during the oppressive civil rights era. The video is a historical visual documentation of the bus company from its beginning to its end. An accompanying written profile describes the research process, the pre-production, production and post-production stages, as well as future proposals for the documentary.
Date:
May 1994
Creator:
Childress, Doris (Doris Elaine)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Parent Responses to the Birth and Rearing of a Child with Down Syndrome : The Application of Engel's 3-stage Theoretical Model of Grieving
The purpose of this study was twofold: 1) To analyze the similarities and differences between parent responses to the birth and rearing of a child with Down syndrome and; 2) To document the characteristics of grieving described in Engel's 3-stage model of grieving. A questionnaire was used to assess responses from randomly chosen parent members of the Dallas Down Syndrome Guild. Qualitative data analysis was conducted, using the methodology of triangulation.
Date:
August 1995
Creator:
Smith, Jenette L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Alcohol Use, Violence, and Psychological Abuse in Intimate Relationships
Women in distressed relationships who had sustained severe psychological abuse and either no, moderate, or severe violence from their partner were included (N = 93). Men's and women's alcohol use did not differ with level of violence. Different patterns were found in the moderate violence group regarding women's beliefs about their partner's substance problem, men's psychological abuse, and the relationship of men's and women's quantity of alcohol use and times intoxicated. Uncertainty resulting from moderate violence may strengthen the emotional impact of psychological abuse. Even when psychological abuse is exacerbated by violence, women may use active coping techniques rather than drinking to cope with abusive relationships. The findings suggest that an inordinate focus on alcohol abuse may be ineffective in combating the problem of domestic violence.
Date:
August 1998
Creator:
Falla, Karen M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library