2,5-Diphenyloxazole (PPO) was tested as a potential alternate inducer for the aryl hydrocarbon hydroxylase (AHH) system. Its apparent lack. of carcinogenicity and toxicity provide a possible system for investigation of enzyme systems related to chemical carcinogenesis without exposure of the researcher to potent carcinogenic compounds. These studies found PPO to be an inducer of AHH in cultured human lymphocytes. When PPO was utilized as a substrate for the AHH assay system, the major metabolites produced were strongly fluorescent. A simple fluorometric assay was developed which employed PPO as the substrate and which measured constitutive activity more efficiently than similar assays using benzo(a)pyrene as the substrate. Quantitation of both basal and induced lymphocyte AHH metabolism of PPO may be applicable to human population studies and may provide a tool to determine possible genetic variables with respect to carcinogen metabolism related to cancer risk.

The purpose of this study is to determine the extent of leisure counseling provided in Texas Community Mental Health and Mental Retardation Centers. Data was gathered from responses to a survey sent to Texas Community MHMR Centers. There was a ninety-three per cent response rate. The results indicated leisure counseling was not being provided, although some minor components of leisure counseling were being conducted at individual centers. Recommendations were made for expansion of recreation programs, the institution of counseling sessions dealing with leisure related topics on a regular basis, the use of leisure interests.:assessment instruments, and the development of a systematic recreation information referral system.

This study investigated the possible differential effects of a series of soluble discrimination problems on internal versus external locus of control subjects. It was hypothesized that externals exposed to a series of discrimination problems would perform better on a test task than external controls, while internals exposed to the same problems would not perform better on the test task relative to their controls. As anticipated, the internals were not affected by the discrimination problems. However, contrary to expectations, the externals were not facilitated by exposure to the soluble problems. Since many external subjects failed to solve all of the soluble problems, a facilitative effect may depend upon the problems being solved.

This study determined attitudes held by television reporters nationwide toward PR practitioners' demonstrated knowledge of the technical side of television news. Findings. that emerged from the study were: 1. Television reporters were undecided whether practitioners needed an educational background in PR, and believed they needed an educational but not a professional background in television reporting. 2. They believed practitioners knew too little and should improve their knowledge, and that practitioners' employers would benefit therefrom. 3. They valued the assistance of practitioners. 4. There were moderate degrees of off-the-job contact and interest therein. 5. They divided evenly on the question concerning practitioners' specific demonstrated knowledge of the technical side of television news.

This paper provides a thematic approach to three major United States government document series relating to topics of early United States diplomatic relations with Mexico; treaty negotiations, the Santa 'Fe trade, the Texas question, and claims. The document series examined are .the United States presidential papers, United States Congressional documents , and the National Archives Record Group 59, diplomatic dispatches from United State Ministers to Mexico. Historians must make an evaluation of all: documentary evidence available for an accurate assessment of historical events. Inadequate analysis of these major United States document series has limited this necessary assessment in the area of United States Mexican diplomatic relations, 1821-1846.

This paper is an exposition of the theory of the hyperspaces 2^X and C(X) of a topological space X. These spaces are obtained from X by collecting the nonempty closed and nonempty closed connected subsets respectively, and are topologized by the Vietoris topology. The paper is organized in terms of increasing specialization of spaces, beginning with T1 spaces and proceeding through compact spaces, compact metric spaces and metric continua. Several basic techniques in hyperspace theory are discussed, and these techniques are applied to elucidate the topological structure of hyperspaces.

This investigation dealt with locating and measuring x-ray absorption of radiographic images. The methods developed provide a fast, accurate, minicomputer control, for analysis of embedded objects. A PDP/8 computer system was interfaced with a Joyce Loebl 3CS Microdensitometer and a Leeds & Northrup Recorder. Proposed algorithms for bone location and data smoothing work on a twelve-bit minicomputer. Designs of a software control program and operational procedure are presented. The filter made wedge and limb scans monotonic from minima to maxima. It was tested for various convoluted intervals. Ability to resmooth the same data in multiple passes was tested. An interval size of fifteen works well in one pass.

This thesis is composed of a collection of thirty-four original poems with an introduction by the author. The introduction attempts to justify the collection by discussing common influences and techniques employed in its creation. The introduction also supplies background information on each poem and, on occasion, discusses the relation of a poem to the rest of the collection.

This thesis investigates the political career of Stephen Dorsey, an Ohio industrialist who moved to Arkansas in 1871. Dorsey was elected to the U.S. Senate from Arkansas in 1873, served as secretary of the Republican National Committee for. the election of 1880, and was tried twice, in 1882 and 1883, for the Star Route postal frauds. Although Dorsey was acquitted, the Star Route frauds ended his political career. Separate chapters treat each phase of Dorsey's career. Major sources included the D41 Arkansas Gazette, the Congressional Record, the Garfield Papers, and the official transcripts of the Star Route trials. The thesis concludes that Dorsey's career was, the product of Ulysses S. Grant's influence within the Republican party in. the Gilded Age.

Investigations have shown that the hypothalamus and pituitary respond to decreases in body temperature by stimulating thyroid release of T_3 and T_4 . This study was designed to bypass the control of the hypothalamus and pituitary gland and investigate the direct effect of temperature on the thyroid gland. Hypothermia was by an in vivo isolated perfusion of the thyroid gland. Radio-immunoassay was used to measure T_3 and T_4 concentrations. Significant increases were observed in animals perfused between 36º and 25ºc. These results indicate that the thyroid gland is directly effected by decreased temperature and that it is capable of exerting control over body temperature independent of the hypothalamus and pituitary gland. Lower perfusion temperatures produced no significant increases.

The purpose of this thesis is to study Thailand's foreign relations. The specific argument will be that, to a large extent, Thailand was able to keep her independence because of her rulers' ability to adapt the country's policy to the changing circumstances in foreign affairs. Therefore, it was imperative for policymakers to look at the threats to the country's security from the local point of view and to develop appropriate policies for dealing with them accordingly. The thesis is organized into six chapters. After the introductory chapter, the second and third chapters examine the historical development and the general features of the foreign relations of Thailand, respectively. Chapter Four deals with the change in the direction of foreign policy after the Second World War. In contrast to the traditional foreign policy, the government under military dictatorship gradually moved in the direction of the Western, especially American, position. The positive and negative consequences of the pro-American policy are treated in Chapter Five, It is pointed out that this policy contributed to the sharp increase in activity of Communist insurgents in various parts of the country. By comparing the post-war foreign policy with the traditional policy prior to that time, a conclusion …

Cerebral electrostimulation (CES) as a treatment for migraine headache was investigated. Eighteen participants recorded data on headaches for two baseline weeks. Six were assigned to each of three groups--an active treatment group receiving CES, a placebo group receiving a simulated version of CES, and a no-treatment control group placed on a waiting list during the study. The CES group evidenced a significant reduction in headache duration and intensity relative to the placebo group. The waiting list control group did as well as the CES group. A number of hypotheses were put forth in an attempt to account for the unexpected finding.

The levels of total nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP), and their redox states were determined as the function of growth in S. cerevisiae. Cells growing in a medium containing 0.8% glucose exhibit two phases of exponential growth, utilizing glucose and ethanol, respectively. The NAD pool is 50% reduced during both stages of growth while the NADP pool is 67% reduced in glucose growth and 48% reduced in ethanol growth. The NAD/NADP ratio is constant during growth on glucose and a two-fold increase in the NAD/NADP ratio occurs upon exhaustion of glucose. The increased ratio is maintained during growth on ethanol. This alteration in the regulation of the relative levels of NAD and NADP may be due to a change in the regulation of NAD kinase and/or NADP phosphatase activities. These changes may be related to the redox state of the NADP pool.

The purpose of this research was to investigate the generation of machine code from high-level programming language. The following steps were undertaken: 1) Choose a high-level programming language as the source language and a computer as the target computer. 2) Examine all stages during the compiling of a high-level programming language and all data sets involved in the compilation. 3) Discover the mechanism for generating machine code and the mechanism to generate more efficient machine code from the language. 3) Construct an algorithm for generating machine code for the target computer. The results suggest that compiler is best implemented in a high-level programming language, and that SCANNER and PARSER should be independent of target representations, if possible.

The following research questions were investigated: (a) Can the age-mates scales from the Dales developmental task scales be used with southwestern-urban adolescent populations? (b) Are there any systematic differences between northeastern-nonurban and southwestern-urban subject populations on the response to these scales? The subjects consisted of 884 adolescents, 11 through 15 years, evenly divided by sex. Subject responses were analyzed by sex and age groups using Guttman scalogram analysis. Goodman's test of significance revealed that the results could have occurred by chance (p > .05). The instrument in its present form was not found useful'-for an urban population. Lack of reproducibility made comparison of the performance of urban and nonurban adolescents unjustified.

Traditional personality research on accident behavior has produced conflicting opinions as to the traits that describe the "accident-prone" personality type. Other research has shown that psychosocial life stress, while partially determining the temporal onset of a variety of illnesses, may also be a factor contributing to increased accident liability. This study examined the role of temporary and stress-producing life changes in groups of accident-free and accident-involved industrial employees. The accident sample was found to have significantly higher stress over baseline during the period of accident involvement, but generally lower pre-accident levels than the non-accident sample. A cause-effect analysis of the data from within the accident-involved sample proved inconclusive. Several implications for future research and managerial actions to alleviate stress were also discussed.

Factors which influence severity of moral judgement in men and women were investigated in this study with 94 male and 89 female undergraduate students as participants. Effects of "sex of judge," "sex of transgressor," and "value orientation" variables were examined across five diverse story conditions. A measure of identification was also obtained. As hypothesized, a significant main effect was found for "value orientation," but not for "sex of judge" or "sex of transgressor" variables. The hypothesized disappearance of a "sex of judge" by "sex of transgressor" interaction was found. Hypotheses concerning a permissive trend and the effects of degree of identification were not confirmed.

A strategy for facilitating post-treatment weight maintenance was examined. Subjects were matched for age, sex, and amount of weight that they desired to lose and were then assigned to one of two groups. Both groups were under contracts and had individually designed self-control programs for weight loss, but subjects in the experimental group lost weight in small steps and subjects in the control group lost weight continuously. The experimental group was predicted to have better weight maintenance after treatment because of a greater number of reinforcements for weight loss. Two-month follow-up data was obtained on the ten subjects who completed the study, and the experimental group was found to have regained significantly less than the control group after treatment ended. The implications of these results for obesity research are discussed.

This paper is a study of the major influence of the German philosophy, Krausism, in the writings of Benito Perez Galdds. The study is an analysis of the effects of this ideology on Spain and her people, as illustrated in the works of the most representative writer of the nineteenth century in that country. Also included is a discussion of historical incidents of the period which is necessary to place the acceptance of both this philosophy and the works of Perez Galdos in its proper perspective.

This paper is presented in satisfaction of the requirement for two problems in lieu of thesis which are required for the degree, Master of Science. The two problems are: (1) to provide an electric interface between the M6800 microprocessor and the printer; and (2) to design an Arabic character set and to provide the logic required for its implementation. As it would be artificial and impractical to document these problems separately, a single document here is provided.

In the fall of 1972 I was required to read Dee Brown's "Bury My Heart At Wounded Knee" as an "atmosphere setter" for a seminar on artists of the westward expansion in the United States. When I first started making drawings of some of the Indian leaders, I had no idea of doing a series. I also had no idea that Indians and more especially those of the West, would be consuming so much of my time and thoughts for such a long period. In the beginning the drawings were prompted by a fascination with the bone structure of the Indian faces. The high cheekbones, the prominent noses and unusual eyes caused marvelous patterns of light and dark, making the faces very conducive to caricature. As I began to know these faces as individuals and personalities, however, I knew that caricature was not the direction which i wanted to pursue.

As a painter, I have been working the past few years to develop a mature pictoral image and the concepts of space that were flexible enough for me to produce what I believed was a valid art statement. I have investigated several avenues for improving my work, i.e., acquiring certain technical painting skills, reading more to broaden my concepts and imagination, and visiting various art galleries and museums. During an earlier critique it was realized that the majority of my paintings were all very similar in scale. I decided to approach my work on a much larger scale than previously attempted in the hopes of discovering a better, or at least different painting concept.

I resolved to consciously examine the role of precise and spontaneous aspects of my drawings as my creative project. I felt that an investigation into the use of precise and spontaneous elements and their relationship to each other would strengthen my understanding of my own work.

The abstract expressionist movement aided in the development of this new personality for the clay world. An entire new dimension was added with extreme manipulation of ceramic pieces. My work reflects feelings and ideas concerning today's society and the status-quo. Common, everyday images recur in my art objects, with a major interest in cars, food, slogans, and puns. These are all a part of the hysteria of the American scene today.