This paper analyzes the soprano arias in three of Franz Joseph Haydn's oratorios, which are Il Ritorno di Tobia, Die Schöpfung, and Die Jahrezeiten. Deborah Thomas analyzes Haydn's oratorio style and attests that development is reflected in the soprano arias.

This paper discuss Maurice Ravel's Jeux d'eau and its accomplishment as one of the first piano solo compositions to reflect impressionistic techniques. Frederika E. Smith traces the history of Ravel's work and the originality of the Impressionism in his work.

This paper discusses etudes and the history of their composition, focusing on the works of Claude Debussy in particular. Richard E. Roberson examines pieces from Douze Etudes Pour Le Piano, Book One, the difficulty of the etudes, and the problems they present.

This paper explores the composition and historical background of Mario Castelnuovo-Tedesco's coplas. Molly J. McCoy discusses the composer's background, style, and influences, before examining each copla in turn.

This paper discusses the nature and significance of the baritone title roles in the operas of Giuseppe Verdi. These operas include Nabucco, Macbeth, Rigoletto, Simon Boccanegra, and Falstaff. Jewel William Hobbins explore the evolution of vocal roles and asserts that Verdi highly prized dramatic skill in his performers.

The purpose of this project is to provide a record, much like the ones left to us by Michelangelo and Leonardo da Vinci, of the personal influences which motivated the present artist to function productively as a sculptor for a period of one semester: from September 1, 1975 through December 12, 1975. The methods involved in charting such artistic transpirations consisted of two types: a written diary, daily recorded, which indicated the progress, regression, frustration, inspiration, and perceptions which were experienced by the artist during the three-month period; and a series of personal, emotional self-enquiries.

In this creative project, I investigated the problems of producing, selecting, presenting, and installing a one-person exhibition. I executed a series of 31 drawings, paintings and prints from which 21 pieces for the exhibit were selected. From the body of work executed prior to and during my graduate study, 21 pieces were included based upon the relative quality of the imagery. There were no restrictions with regard to media or size. My goal in this project was to assemble and present a coherent and harmonious exhibit in the North Texas State University art gallery.

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The simultaneous determination of up to 20 trace elements in various oil matrices by inductively coupled plasma-atomic emission spectrometry is reported. The oil matrices investigated were lubricating oils (for wear metals), fuel oil, centrifuged coal liquefaction product, crude soybean oil, and commercial edible oils. The samples were diluted with appropriate organic solvents and injected into the plasma as an aerosol generated by a pneumatic nebulization technique. Detection limits of the 28 elements studied ranged from 0.0006 to 9 ..mu..g/g with the majority falling in the 0.01 to 0.1 ..mu..g/g range. Analytical calibration curves were linear over at least two orders of magnitude and for some elements this linearity extended over 4.5 orders of magnitude. Relevant data on precision and accuracy are included. Because metals often occur as particles in lubricating oil and coal liquefaction products, the effect of particles on the analytical results was examined. Wear metal particles in used oil did not appear to affect the analytical results. However, incomplete recovery relative to organometallic reference solutions was obtained for iron particles with a nominal mean diameter of 3.0 ..mu..m suspended in oil. It was shown that the following factors contributed to incomplete recovery for the particles: settling of the …

A dibutyl amide resin is used for the separation of uranium(VI), thorium(IV), and zirconium(IV) from each other and several other metal ions. Uranium(VI) and thorium(IV) are determined in the presence of large excesses of foreign metal ions and anions. A practical application of the amide resin is studied by determining uranium in low grade uranium ores. The amide resin is also used for the selective concentration of gold(III) from sea water.

This research is concerned with the solvent extraction into chloroform of the lanthanides, using 2,5-dimethyl-2-hydroxyhexanoic acid (DMHHA). This acid is the first ..cap alpha..-hydroxy aliphatic acid to be studied as an extracting agent for the lanthanides. The chloroform-water DMHHA partition constant was determined to be 1.0 (at 0.1 M ionic strength and 25/sup 0/C). The acid dimerizes in chloroform with a constant of 56. The light lanthanides can be extracted into chloroform by forming complexes with the DMHHA anions. The extracted metal species is highly aggregated. This extraction has a solubility limit which increases with the addition of unionized acid. The resultant extract is also highly aggregated. At unionized acid-to-metal ratios greater than one, extractions first occur followed by the slow precipitation of the lanthanide. At the tracer level, neodymium is extracted primarily as NdA/sub 3/(HA)/sub 5/ and (NdA/sub 3/)/sub 2/(HA)/sub q/. Very small amounts of (NdA/sub 3/)/sub 2/ and other metal aggregates are also present. The heavy lanthanides do not extract from solutions of DMHHA and its potassium salt, but form aqueous emulsions and precipitates. In the presence of the organic soluble tetrabutylammonium ion the heavy lanthanides can be extracted, presumably as ion pairs. The stability constants of the …

Energy curves are determined for the lowest singlet and triplet states of the HNO molecule. The geometry is varied in that the hydrogen moves through 13 positions around the NO core to describe the isomerization reaction HNO yields HON. Quantitatively determined are the stable and metastable equilibrium positions in both states, the energy differences between these two equilibrium positions and between the two states, and the barriers with respect to isomerization. The calculations are carried out using a novel configuration interaction approach called the Full Optimized Reaction Space method, which involves multiconfigurational self-consistent field calculations as an integral part. In order to interpret the bonding changes occurring during the reaction, a novel type of orbital is developed and calculated. These are called Directed Localized Reaction Orbitals. With their help it proves possible to give an interpretation of the isomerization in terms of concepts which fit chemical intuition.

A unique phonon progression in the phosphorescence spectrum of pyrene-PMDA (Py-PMDA) in naphthalene-PMDA (N-PMDA) is reported. Calculations of the electron-phonon coupling strength parameter for the ground and excited states indicate strong coupling for the fractional CT contribution of Py-PMDA to the observed phosphorescent state. Model calculations indicate that the observed low frequency phonon mode corresponds to a low energy rotation of the rigid guest complex and not a symmetric donor-acceptor stretch. The unusual reduction of the phonon mode frequency in the excited ground state is explained in terms of a contracted complex that can more easily rotate in a larger cavity. A brief phonon progression is also observed for the mixed crystal A-PMDA in N-PMDA. For both mixed crystals, Py-PMDA in N-PMDA and A-PMDA in N-PMDA, the energy spacing between the zero-phonon vibrational bands in the mixed CT crystal phosphorescence spectrum are very similar to those obtained from the phosphorescence spectrum of the pure donor in a rigid matrix. There is a large blue shift between the origin band of the mixed CT crystal phosphorescence spectrum and the origin band of the pure donor phosphorescence spectrum for the A-PMDA mixed crystal, but not for the Py-PMDA mixed crystal. The structureless …

A semiconductor laser has certain properties which makes its use desirable as a continuous monitor of atmospheric pollutants. Its energy output is concentrated in widely separated energy modes of very narrow bandwidths (less than 10/sup -5/ cm/sup -1/) which can be centered on one infrared absorption line of one gas. This makes the laser quite selective. The energy in each mode is typically greater than 200 ..mu.. watts, and, because of the laser's small size, its light energy can be collimated over large distances with minimal optical losses and be easily detected. One can rapidly measure the decrease in transmission of the light due to the absorption of the light by the gas being monitored, and, using certain analytical parameters, which are different for each absorption line, one can determine the concentration of the gas in question immediately. In addition to the line center (nu/sub 0/), these analytical parameters are the intensity (S) and the half width at half maximum (..gamma..). The intensity (S) is dependent only on temperature when expressed in a per concentration basis and ..gamma.. is dependent on pressure. The Lorentzian lineshape equation K(nu) + S/..pi gamma..(((nu - nu/sub 0/)/..gamma..)/sup 2/ + 1)/sup -1/ is the equation …

Crux Fidelis is a musical and theatrical setting of the Roman Catholic Good Friday service. The work consists of three movements during which seven themes are developed in cyclic fashion thus making the overall form of the piece one of thematic variations. Variable tempos and moods are used throughout the work and are determined by the text. Linear construction, used primarily throughout the work, results in occasional vertical sonorities. A further synopsis of the elements of the work is included in the discussion and analysis.

The composition is for large chorus, soloists and orchestra. It is in six movements and of about thirty minutes duration. The work is illustrative of texts from the Bible, " Pied Beauty by Gerard Manley Hopkins, and an early nineteenth century hymn by William More. The tonal resources used are based on diatonicism, altered and extended, with occasional use of the dodecaphonic technique as a device for melodic invention. The rhythmic resources are metered and unmetered. Traditional choral writing and devices of more recent origin are used in the composition of the vocal passages. The work is of moderate difficulty, and suggests departures from traditional choral concert programming. A commentary, instrument chart, and performance instructions precede the music. The commentary explains the general character of the work, the utilization of the text, and the techniques of composition. In addition, it presents a comparison of the movements.

The composition, in three movements, is scored for flute, doubling piccolo;oboe, doubling English horn; B-flat clarinet, doubling bass clarinet; bassoon; horn; trumpet; trombone; violin; viola; cello; contrabass; piano; and percussion. The title Sinfonia Concertante is used for its specificality: a symphony of several solo instruments with traits of the classical style. The music is mock-serious and satirical at times, making light of a certain post-1945 musical gravity. The duration of the work is approximately 20 minutes.

This paper presents a means of modulating timbre in digital sound synthesis using additive processes . A major portion of the paper is a computer program, written in Pl/1, which combines this additive method of timbre modulation with several other sound manipulation ideas to form a compositional program. This program-which is named CART for Computer Aided Rotational Translation-provides input for the Music 360 digital sound synthesis program. The paper contains three major parts: (1) a discussion of the CART program's evolution; (2) a manual describing in detail the use of CART; and (3) two tape compositions realized using the program. An appendix contains the program listing and listing of the input cards that were used to produce the two compositions.

The problem of the study was the effect of fear-arousing communications upon junior high school students' cognitive, emotional, and behavioral responses within the context of a dental hygiene program. Analysis of the data revealed that the personal performance scores, were initially, significantly (p <= .05) different for the recommendations and low-fear groups. They had cleaner teeth. The recommendations elicited the most positive change, and this extended for a longer period of time. There were no significant differences in any of the other variables. The results were more questionable in cases where threat appeals were used for volunteer subjects. Fear messages elicited less positive change and were seen as being unnecessary in teaching dental hygiene. Behavior, cognition, and emotion, as components of an attitude, were explained as being idependent in threat-appeal research where behavior may change but not attitudes.

The present study was designed to determine the effect of skin-temperature-biofeedback training on cellular proliferation in three psoriasis patients. It was hypothesized that (a) psoriasis patients would be able to consciously decrease skin temperature of psoriatic tissue, and (b) there would be a positive correlation between rate of cellular proliferation and temperature change. Results obtained indicated biofeedback training to be effective in decreasing the surface temperature of psoriatic tissue. A 2 X 7 analysis of variance for two repeated measures indicated the change in skin temperatures as a function of sample period to be significant, F (6,26) = 3.29, p < .02. Generalization of temperature-training effects from the biofeedback to the no-feedback condition were observed. Rate of proliferation decreased from pretraining to posttraining biopsies.

The purpose of this study was to determine the effects of rapid weight loss on wrestlers' efficiency incorporating competitive aspects of the sport into the research procedures. Six subjects were selected from the North Texas State University Wrestling Club. Eight cardiovascular and neuromuscular measurements were taken and recorded before treatment and following treatment. Astrand's bicycle ergometer test was utilized to obtain exhaustive, heart rates. Data were analyzed by a one-tailed t test at the .05 level. Conclusion of the investigation was that following 6.25 per cent rapid loss of body weight, over a period of one week, no loss of efficiency occurred among wrestlers under simulated competitive conditions.

This thesis examines and evaluates the questions involved in American arms sales to Iran and Egypt. The first two chapters outline the historical background and present detailed analyses of Iran's political situations prior to 1968 and United States policy toward it in that period of time. Chapter Three considers the American policies towards Egypt and the United States arms sales to that country. The main argument of the thesis appears in chapter Four which explains the objectives of Iran's government in buying American arms and the United States government's objectives in selling arms to Iran. Conclusions on the study comprise the fifth chapter.

This study is concerned with the problem of determining the nature of impeachable offenses through an analysis of the English theory of impeachment, colonial impeachment practice, debates in the constitutional convention and the state ratifying conventions, The Federalist Papers and debates in the first Congress, In addition, the precedents established in American cases of impeachment particularly in the trials of Judge John Pickering, Justice Samuel Chase and President Andrew Johnson are examined. Materials for the study included secondary sources, congressional records, memoirs, contemporary accounts, government documents, newspapers and trial records, The thesis concludes that impeachable offenses include non-indictable behavior and exclude misconduct outside official duties and recommends some alternative method of removal for federal judges.