Measurements of the target thickness dependence of the target x-ray production yield for incident fast heavy ions are reported for thin solid Cu targets as a function of both incident projectile atomic number and energy. The incident ions were F, Al, Si, S, and CI. The charge state of the incident ions was varied in each case to study the target x-ray production for projectiles which had an initial charge state, q, of q = Z₁, q = Z₁ - 1, and q < Z₁ - 1 for F, Al, Si, and S ions and q = Z₁ - 1 and q < Z₁ - 1 for C1 ions. The target thicknesses ranged from 2 to 183 ug/cm². In each case the Cu K x-ray yield exhibits a complex exponential dependence on target thickness. A two-component model which includes contributions to the target x-ray production due to ions with 0 and 1 K vacancies and a three-component model which includes contributions due to ions with 0, 1, and 2 K vacancies are developed to describe the observed target K x-ray yields. The two-component model for the C1 data and the three-component model for the F, Al, Si, S, and C1 …

This investigation was concerned with characterizing a tumor line induced and maintained in this laboratory. Various chemical assays, cell counts, and electron microscopy were the methods employed to characterize the blood of mice bearing the tumor at days 3, 6, 9, and 12 after injection of the 1.2 x 10^8 tumor cells.

The investigation was concerned with characterizing effects of this tumor line on lipid metabolism in DBA/1J mice and serum protein levels and cellular changes in DBA/1J and Swiss white mice. Total lipids, lipid phosphorus, neutral lipids, and changes in fatty acids were determined in liver, spleen, skin and tumor of DBA/1J mice bearing the lymphosarcoma at various days after injection of tumor cells.

This investigation was concerned with characterizing effects of this tumor line on lipid metabolism in DBA/lJ mice and serum protein levels and cellular changes in DBA/lJ and Swiss white mice. Total lipids, lipid phosphorus, neutral lipids, and changes in fatty acids were determined in liver, spleen, skin, and tumor of DBA/lJ mice bearing the lymphosarcoma at various days after injection of tumor cells.

The status of bilingual education in Texas has been examined in this paper in order to explore the nature of bilingual education and bilingual education programs, to ascertain whether the implementation of bilingual education programs has been successful in Texas, and to determine if there is sufficient justification for the continuation of such programs.

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.

The present study is an attempt to determine the effect of anxiety, hostility, and depression on responses to the Rotter Incomplete Sentences Blank when it is scored according to the manual instructions. Whether the score fluctuates or not will have implications on how psychologists should use this test as a diagnostic tool.

The dissertation consists of four recitals: three solo recitals and one lecture recital. The repertoire of all the programs was intended to demonstrate a variety of music written originally for trombone. The lecture recital, "The Trombone in German and Austrian Concerted Church Music of the Baroque Period," was presented on July 3, 1974. The lecture was an attempt to illuminate the position of the trombone, both as an ensemble instrument and as a solo obbligato instrument, in church music of the Baroque period. The program included the performance of two works by Heinrich Schutz for bass voice, four trombones, and continuo; one work by Andreas Hammerschmidt for alto, bass, trombone, and continuo; and one work by Johann Joseph Fux for soprano, trombone, two violins, and continuo. A line of influence was traced from the Venetian composers Giovanni Gabrieli and Claudio Monteverdi, through Schiitz, Hammerschmidt, and Fux, to Mozart.

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Three groups of goldfish were prepared; naive, avoidance-conditioned and pseudo-conditioned animals. Five pseudo-conditioned fish were avoidance trained later and found to have no measurable acquisition of the avoidance conditioning paradigm. Several protein fractions were found to have significantly different rates of synthesis when compared across groups. The possible involvement of these proteins in the memory storage process was discussed.

The purpose of this study was to investigate the effects of aspirational and dissociative reference group influence on consumer behavior. There are two ways in which behavior is influenced by reference groups. First, reference groups influence aspiration levels and therefore play a major role in producing satisfaction or frustration. Second, reference groups influence kinds of behavior, i.e., they establish approved patterns of behavior.

A two-dimensional, two fluid model of the MHD equations has been coupled to a Monte Carlo transport model of high energy, non-Maxwellian ions. The MHD part of the model assumes complete ionization and includes a perfect gas law for a scalar pressure, a tensor artificial viscosity, electron and ion thermal conduction, electron-ion coupling, and a radiation loss term. A simple Ohm's Law is used with a B/sub theta/ magnetic field. The MHD equations were solved in Lagrangian coordinates. The conservation equations were differenced explicitly and the diffusion-type equations implicitly using the splitting technique. The Monte Carlo model solves the equation of motion for high energy ions, moving through and suffering small and large angle collisions with the fluid Maxwellian plasma. The source of high energy ions is the thermonuclear reactions of the hydrogen isotopes, or it may be an externally injected beam of neutralized ions. In addition to using the usual Maxwell averaged thermonuclear cross sections for calculating the number of reactions taking place within the Maxwellian plasma, the high energy ions may suffer collisions resulting in a reaction. In the Monte Carlo model all neutrons are assumed to escape, and all energetic ions of Z less than or equal …

The problem was to develop a model of thought within the basic structure provided by general or "point-set" topology. To do this, it was necessary to make four basic assumptions. It was assumed that each individual possesses more than the classical five senses and that for each of these there exists a category of sensory data. Also, it was assumed that the Cartesian product of these categories formed a set M of thought elements for each individual, and that certain subsets of M provide support for cogitation. The relation, function, continuous function, and homeomorphism, which are used to relate sets in topology, are discussed as a possible ramification of the model for communication. The global properties of the homeomorphism and continuous function present each as a viable support for strong and meaningful communication between thought spaces of individuals.

One problem in tuba performance is the use of a mute for the tuba. With no research existing a tubist has two methods with which to gain knowledge about mutes; he can learn by trial and error or he can consult a tubist having more experience with the problem. A source is needed to aid a tubist in locating information on mutes for tuba. By learning more about the uses of mutes, the availability of mutes, and the effects of mutes on tuba performance, a tubist will be better equipped to select a mute for personal use. This study is designed to provide, objectively, that knowledge to the tubist.

The purpose of this study was to determine whether similarities exist in the perceptions of the roles of academic deans in community colleges. This study attempted to determine whether role expectations and perceptions reflected separate and distinct relationships, or if administrative patterns reflected an overlapping of responsibilities.

"The problem with which this investigation is concerned is the determination of the role played by public relations professionals in Texas politics. This exploration of modern campaign technology relies on a survey of related literature, published and unpublished, and on personal interviews conducted in 1968-69 with candidates for public office, party workers, public relations experts, campaign managers and consultants, and media specialists involved in the Texas Democratic Gubernatorial primary campaigns of 1968...the findings show that the public relations professionals are playing an ever increasing role in Texas politics and that their expertise and skills play a particularly important role in political campaigning. The Texas Democratic Gubernatorial primary campaign of 1968 illustrates the widespread use of professional consultants by Texas politicians and indicates that their use has had recognizable consequences for the distribution of power and influence."-- leaf [1].

Although much has been written on the subject of conducting, it is generally recognized that a great deal can be learned through discussion with and observation of successful conductors. Direct contact with master conductors is an excellent learning tool, but seldom do high school or college choral conductors have the opportunity for direct individual study of the experts in their normal situations. This study provided the opportunity for one practitioner to work with two expert choral conductors. The report was written with the hope that other practitioners might also benefit from the results of the investigation. The purpose of this study was to identify and compare preparations and experiences, philosophies of music, and observable choral concepts which may have contributed to the superior choral achievements of B. R. Henson and Lloyd Pfautsch.

The major problem of this study was to compare the views of the role of the student in a science class as reported by college science educators and secondary science teachers of grades 6-8 and of grades 9-12. Analysis of individual items. The Q-sorts indicate that all groups in this study recommend greater emphasis on student activities, student discovery, student questions, teacher accepting students' new ideas and viewpoints, student freedom to ask any science question, student enjoyment of science, more time spent in doing things other than listening, student ease in getting equipment, student revealing likes and dislikes in science, student maintenance of science equipment and student use of laboratory equipment.

This study sought to determine whether any differences existed in the degree of relationship between the self-concepts of Negro and white college freshmen as measured by the mean scores achieved by them on the Tennessee Self Concept Scale and the nature of their performance in written expression as measured by the mean evaluations received by them for certain aspects of their written work.

The problem of this study was to determine through the use of taped media receptivity to dissonant or consonant information and to appraise those conditions which bring about change in attitude in light of dissonance theory.

The vapor pressure was determined from 1600 deg F up to the critical point. The equation Ln P = A + B/T + C Ln T was found to fit the data well, a fourth term D/T/sup 2/ further improved the fit. A novel design was employed in measuring the vapor pressure, which provides a direct determination of the critical pressure, because at all tip temperatures higher than the critical temperature the same breakoff pressure'' is observed. This breakoff'' pressure'', which is produced when the liquid level reaches the critical temperature in its travel along the bore of the tube, is the critical pressure. (58 figures, 50 references) (DLC)

Measurement of the line width parameters of a molecule is of interest because collision diameters can be calculated from them. This gives an effective size of the molecule when it is involved in interactions with other molecules. Further, specific types of interactions can be inferred from detailed information about the dependence of the line width upon pressure. In this paper, an experiment for measuring line width parameters for methyl cyanide is described and the results of the experiment are analyzed. This investigation was successful in obtaining precise values for the line width parameter for the J-J' = 0-1, J-J'= 1-2, and J-J' = 2-3 transitions of methyl cyanide which agree with experimental values of other researchers where available. It was found that standing waves were the dominant effect in the measurement of center frequency shift.