TLD-100 (lithium fluoride) thermoluminescence dosimeters are widely employed for the detection of ionizing radiations. This paper shows that these dosimeters may also serve as practical germicidal ultraviolet radiation dosimeters. To measure ultraviolet radiation, the TLD-100 dosimeters are first exposed to 500,000 roentgens of gamma radiation and then annealed at 300°C. Subsequent dosage of ultraviolet radiation may be determined by observation of photostimulated thermoluminescence of the crystal. The presented data indicate that the thermoluminescence response is linear for exposures up to 6,000 µjoule/cm2 and independent of exposure rate from 0.1 µ watt/cm2 to above 50 µwatt/cm2. Optical absorption, emission spectra, and sensitivity as a function of temperature of the dosimeters during ultraviolet exposure are presented. Also, a partial model of the photostimulated thermoluminescence process is presented.

Microtubules, isolated from bovine brain, were used to study the effect of ultraviolet radiation on the tubulin-3H-colchicine complex and the polymerizing ability of this complex to intact and disrupted microtubules. Dissociation of this complex was observed upon ultraviolet irradiation and continued to progress as exposure time increased. The binding of this complex to intact microtubules prior to irradiation did not seem to enhance its stability to ultraviolet radiation. There was a significant difference observed at the 0.05 level between the binding of the tubulin-3H-colchicine complex to microtubules in mechanically disrupted and control samples. Statistically, there was no significant difference observed between the binding of tubulin-3H-colchicine complex to microtubules in sonicated and control samples. A slight difference in the electrophoretic mobilities of the alpha and beta tubulins was observed upon electrophoresis of bovine brain microtubule preparations. Various microtubule preparations exhibited different binding levels to 3H-colchicine depending on their degrees of purity. The purer samples exhibited higher binding levels than the less pure samples.

Factor score profiles based on scores in the standardization sample for the Wechsler Intelligence Scale for Children – Revised were visually surveyed for patterns of the demographic characteristics sex, race, parent’s occupation and religion and area of residence, these characteristics having been listed with the intelligence quotients obtained in the standardization sample. Patterns of the demographic characteristics and frequencies were described over the range of profiles, then the various profiles were described individually in terms of percentage of frequency and predominant demographic characteristics. The profile descriptions demonstrate a differential distribution of characteristics in relation to profiles, and suggest investigation of associations between the profiles and other variables, such as personality traits and pathological behaviors.

The purpose of this investigation was to study ultraviolet radiation effects on rotifers. The rotifer studied was Philodina acuticornis odiosa Milne. Isolation cultures were used to grow the rotifers individually in separate U-plate depressions. The source of ultraviolet radiation consisted of four mercury germicidal lamps used in combination to deliver a uniform flux of 315 uW/cm2 over the sample. Five groups of rotifers, one control and four experimental groups of 96 each, were used. The rotifers used were 2-10 hours of age at the beginning of the experiment. The experimental groups were exposed to uv radiation for 3 minutes, 5 minutes, 7 minutes, 9 minutes. The mean lifetime of each of the control, 3 minutes, 5 minutes, 7 minutes, and 9 minutes irradiated groups was 20.4 days, 19.1 days, 17.1 days, 11.5 days, and 6.3 days respectively. No specific theory, nor the mechanism involved is given to explain these uv radiation effects on rotifers. From the data, it is concluded that some radiation shortens the mean lifetimes of rotifers and that there is a threshold exposure after which the survival of the rotifer changes drastically.

This thesis examines the hegemonic function of symbolic structures of relevance as they are related to phenomenological commitments to social change held by voluntary associations of homosexuals. The data base of this investigation consists of the literature of 21 homophile organizations. Organizations literature is used to facilitate a theoretical adaptation of Alfred Schutz’ discussion of relevance structures which addresses he hegemonic organization of voluntary associations. The concept of relevance structure was implemented to relate predominant orientations within the sociology of deviance to a phenomenological interpretation of group commitment serves as a heuristic device for scrutinizing the instrumental as well as expressive functions fulfilled by relevance structures. These hegemonic components sustain in a “phantasied praxis” within a particularistic world-view. This conception of social praxis was drawn from Antonio Gramsci’s interpretation of a Marxian sociology of knowledge. Subsequently, the relevance structures of each association are juxtaposed to its level of phenomenological commitment as well as its Marxian nature. This operation culminated in the construction of a referent typology which outlines “families” of relevance structure in relation to orientations to phantasied praxis.

Extensive surveys of the ichthyological fauna have been made for states bordering Kentucky. An investigation of the literature pertaining to the ichthyology of Kentucky discloses the fact that no detailed investigation has been made of fish life in this state, especially western Kentucky. No record is available of any survey having been made in the section known as the Mammoth Cave Region. The purpose of this survey was to make a species and ecological study of the fishes of the Mammoth Cave Region. Extensive opportunity for ecological studies exists in this region, but only the most important factors were included in this study. A study was made of the species distribution as affected by altitude; the type of water, i.e., whether the water was a river, a lake, a pond, or a sink; and the type of current, i.e., whether a rapidly moving stream, a stream of moderate movement, a still but clear body of water, or stagnant water. Most of the large lakes are of the clear type, while the ponds are of the stagnant type. As the region is naturally divided by Green River into two regions of different geological formations, a study of the species distribution both north and south of the river was made.

During the Kentucky Association of School Administrators Conference, July 1990, principals from across Kentucky were surveyed by a questionnaire to determine their perceptions and preparedness to assume their role under the newly mandated law, House Bill 940, specifically school-based management. It was the assumption of the researcher that principals across Kentucky have very little background or training in the use of group processes and strategies needed to make school-based management a successful part of Kentucky’s educational process Based on a statistical analysis of the collected data the research would appear to support the researcher’s assumption. Principals indicated a need for staff development in the area of group processes and organizational strategies. They also indicated a basic knowledge of the concept of school based-management but were uncertain about the processes to achieve effective school-based management with school councils.

Five astronomical data analysis methods were evaluated, using computer simulation techniques, for minimum detection levels, periodicity detection, and parameter estimation sensitivities. The evaluation of these methods was accomplished using three basic waveforms with the addition of ten “random” noise samples from a Gaussian distribution of known parameters. The chi-square and t-test methods were evaluated in detecting low-amplitude variability and brightness level shifts. Results indicate both methods have a strong dependence on the estimation of the standard deviation (σ) where a 0.1 change in σ will affect detection rates by ten to twenty-five percent at the ninety-five percent confidence level. The amplitude of variation must exceed four times σ of the sample before reliable detection will result. Two data smoothing techniques were investigated for estimating the rates of change of the variations. Tests indicate that the variation slope must equal or exceed six times σ of the sample with at least six points defining the slope in the case of the least squares method or four points while using the three point averaging as a preprocess to the least squares method before slope estimates fall within ± 10 percent of actual rates. Periodicity detection tests using autocorrelation show results of detection within ±1 point for the test samples where the σ of the random noise was equal to the basic waveform amplitude for uniformly spaced data which contains a minimum of one and one-half periods of variation.

The present research is a comprehensive look at the causes and treatment of autism. To date the research has not found the etiology of autism, even though many areas have been examined. The areas looked at are psychogenic, biochemical and neurobiological. Some of these areas seem promising and may in the future shed more light on why these persons present this particular cluster of problem behaviors. Approaches to the treatment of autism have not yielded an all encompassing cure for autism. Therefore, the symptoms of autism were presented along with the current treatments that are most successful in dealing with those symptoms. Facilities that work with these people were visited and the approaches they use were presented.

Since the advent of the laser there has appeared a multitude of scientific papers describing the various parameters that would affect the lasing action of the ruby laser. Many investigations have been carried out to determine the efficiency of the R-line fluorescence in ruby: however very little work has been done concerning the X-ray-induced luminescence of ruby. Certainly the applications to laser technology would be of sufficient importance to merit a study of ruby under continuous irradiation, although this was not the main stimulus that motivated this investigation. The original program of study was undertaken to determine if there existed any relation between thermoluminescence and X-ray-induced luminescence. The samples that were chosen for study were the alkali-halides, ruby and sapphire. After some interesting preliminary observations it was apparent that time would not permit a detailed study of all the samples mentioned. Owing to the important applications of ruby, all experimental efforts were concentrated on the ruby samples. The purpose of this investigation was: 1) Study the X-ray-induced luminescence of ruby as a function of temperature, chromium concentration, and polarization. 2) Observe the thermoluminescence of ruby and compare it to the X-ray-induced luminescence of ruby. 3) Determine the thermal energies of activation for the ruby samples. These observations were made over a temperature range from room temperature (23°C) to 400°C.