The present audiographic study examined ligands for three receptors, chosen on the basis of high abundance of these receptors in the SCN relative to other brain regions([125I)VIP and [125I) angiotensin II) or the ability of pharmacological manipulations to affect the phase and period of circadian rhythms.

Moment Variations is a three-movement composition for chamber orchestra and chamber choir of approximately 21 minutes duration. The basis of this piece is compositional unity through variations technique, where the retained element of the theme is its structure or fixed-structure variations.The fixed-structure is a succession of six musical events, called moments, in the order: I II III II IV V III V VI, where moments II, III, and V are internally repeated and I, IV, and VI occur only once.

In the middle of his career, Arthur Garfield Dove created a smell yet novel body of landscape assemblages. They illustrate Dove's central interest in evoking nature--its motifs and rhythms--through imaginative associations of organic and man-made materials. These works represent Dove's synthesis of contemporary European stylistic and intellectual ideas as well as American philosophies and concerns. They also reflect the influence of Alfred Stieglitz and his circle and the artist Helen Torr, Dove's second wife. This study examines how Dove used a complex interplay of European theory and technique, American ideas and his own nature-based abstract style to create the landscape assemblages, works that are uniquely independent in the history of American art.

The studies reported in this dissertation constitute the first evidence that methylprednisolone (MP) has been shown to ameliorate specific components of secondary trauma including ischemia, lactic acidosis, and lipid peroxidation.

Calcium/calmodulin-dependent protein kinase II (CaM kinase II) is demonstrated to exist in the ß-cell and immunopecipitation. Glucose and potassium significantly stimulate the rapid autophosphorylation of CaM kinase II and proportionally induce autonomous activity of the kinase in a dose-dependent manner that parallels insulin secretion. The activation of CaM kinase II, alloxan, KN-62 and KN-93, suggest that the enzyme is an integral component of insulin secretion and/or related processes in the β-cell.

The ADP-ribose elongation catalyzed by poly(ADP-ribose) polymerase (PARP) [EC 2.2.2.30] has been partially characterized utilizing mono (ADP-ribosyl)ated polyamines. Arginine methyl ester (AME)-(ADP-ribose) and agmatine (AGMT)-(ADP-ribose) were synthesized enzymatically with a eukarytic mono(ADP-ribosyl) transferase and cholera toxin, respectively.

This study involved a geographic information systems (GIS) approach to modeling ground water pollution potential in the Southern Edwards Aquifer Region in Texas. The DRASTIC ground water model was analyzed using two methods. First, the effects of adding land cover data to the drastic model were evaluated. In the second approach, the effects of the removal of DRASTIC variables were evaluated. Six, five, and four variable models were generated and analyzed.

A novel structure related to Seperation by Implanted Oxygen (SIMOX) of NiSi2/SiO2/Si is studied for two primary reasons: the importance of metal silicide and insulating oxide in IC devices and the difficulty of direct growth of crystalline silicide on amorphous substrates.

This study investigates compliance-gaining rhetoric among Anglo and Mexican-American fourth graders in three schools in north Texas. The children were asked to respond to a scenario and to give a rationale for their persuasive strategies. An analysis of interviews with 52 children indicates that although the children used some similar strategies when attempting to gain compliance from an adult, there are also some significant differences between the two cultural groups.

In this study, ADP-ribosylation reactions in the murine myelomonocytic cell line WEHI-3BD+ were investigated.

Nonet for Percussion and Tape is a twenty-two minute through-composed work for eight percussionists and tape. The instrumentation includes: marimba, xylophone, glass wind chimes, slit drum, woodblock, vibraphone, crotales, metal wind chimes, snare drum, bass drum, tom-toms, temple blocks, bass marimba, log drum, cowbells, medium suspended cymbal, gongs, timbales, bongos, tambourine, roto-toms, timpani, and pre-recorded computer-generated/computer-sampled sound.

This study traces the history of the 28th Texas Cavalry by using a traditional narrative style augmented by a quantitative approach. Compiled service records, United States census records, state tax rolls, muster rolls, and casualty lists were used to construct a database containing a record for each soldier of the 28th. Statistical analysis revealed the overwhelming southern origins of the regiment, the greater proportion of older and married men compared to other regiments, and a close resemblance to the people of their home region in terms of occupations, slaveholding and wealthholding.

Three major microbial subpopulations from an industrial leachate system were characterized with respect to their bioremediation potential, and particular aspects of a cometabolically active subpopulation were determined.

The glycolytic enzyme enolase is an abundant, immunodominant antigen of the fungal pathogen Candida albicans. A C. albicans enolase cDNA was used to study the genetic organization and expression of enolase genes. Experimental results were consistent with a model predicting four enolase genes per diploid genome. Enolase steady state mRNA levels increased during logarithmic growth, but were unaffected by pH, growth form or carbon source.

Some strains of coagulase-negative staphylococci produce an extracellular material, slime, which mediates adherence to foreign surfaces, such as indwelling biomedical devices. It is not known if slime is involved in adherence to human tissue. Coagulase-negative staphylococci are the most common members of normal ocular flora and cause many ocular infections, although the role of slime in these infections has not been studied.

Th ocular bilateral hypotensive effect after unilateral topical administration of medetomidine and 4 analogs was demonstrated in a dose-response study (0.5%-2%) in NZW rabbits (bilateral IOP-lowering efficacy: medetomidine>detomidine and MPV-1440>MPV-1441 and MPV-305BIII).

The purpose of this research was to reveal the morphological and cytological characteristics of Azotobacter vinelandii cells cultured in dialyzed soil medium. Culture samples taken at two, four, eight, sixteen and thirty-two days were prepared and examined with the electron microscope. Comparisons of the morphology of Azotobacter vinelandii grown in dialyzed soil medium with those grown in Burk's nitrogen-free, chemically-defined medium were done.