Aortic baroreflex (ABR) control of blood pressure was examined in 7 untrained (UT) and 8 endurance exercise trained (EET) young men. ABR control of blood pressure was determined during a steady state phenylephrine infusion to increase mean arterial pressure 10-15 mmHg, combined with positive neck pressure to counteract the increased carotid sinus transmural pressure, and low levels of lower body negative pressure to counteract the increased central venous pressure. Functioning alone, the ABR was functionally adequate to control blood pressure. However, ABR control of HR was significantly diminished in the EET subjects due solely to the decrease in the ABR sensitivity. The persistent strain from an increased stroke volume resulting from endurance exercise training could be the responsible mechanism.

The factors involved in calculating Standard Visual Range (SVR) are discussed, and a comparison is made between the visibility reported by airport observers and the photographic slide/ optical densitometer method of calculating SVR. Using slides of Houston, Texas, from the fall and winter of 1988-89, it was found that the altitude at which the contrast measurements are made significantly affects the SVR. Also an index for predicting high and low humidity was developed using the blue/red ratio of the log exposure of the sky, and sun/shade target condition.

Written in the tradition of American political suspense thrillers such as "Fail-Safe" and "Seven Days In May," "Bearclaw" uses their idealistic and nationalistic elements to tell a story of an American President eager to lead the world's peoples in a quest to achieve man's "highest destiny," the conquest of space. Believing that this common goal will cause mankind to come together in a spirit of brotherhood, he misreads the historical purpose of the United States and, in the end, refuses to recognize the obvious truths of human frailty and ambition even though he has been victimized by them. The Introduction is a brief survey of the sociopolitical and literary forces which combined to create the American political suspense thriller and an attempt to define its place in the literary canon.

This thesis examines the trends in historical interpretation concerning the coming of the American Civil War. The main body of works examined were written between 1950 and 1976, beginning with Allan Nevins' Ordeal of the Union and concluding with David M. Potter's The Impending Crisis, 1848-1861. It also includes a brief survey of some works written after 1976. The main source for discovering the materials included were the bibliographies of both monographs and general histories published during and after the period 1950-1976. Also, perusal of the contents and book review sections of scholarly journals, in particular the Journal of Southern History and Civil War History, was helpful in discovering sources and placing works in a time chronology for the thesis narrative.

Observed and expected heterozygosity (H) levels for ten electrophoretic blood marker loci and expected H for seven red blood cell (RBC) anitgen/antibody loci were examined for 20 years in American Standardbred and 30 years in American Saddlebred horses. Standardbreds were classed by gait, Trotter and Pacer, and evaluated separately in most analyses. 4,404 Trotters and 12,271 Pacers were found to have statistically highly significant losses of mean total observed H through time for the ten electrophoretic loci (P<0.005), although in Trotters the loss was more extreme (P<<0.001). Loss of H in 5984 Saddlebreds was not significant (P=0.259). Correlations of RBC expected H through time showed decreases in all three groups.

This thesis deals with the role of property in the formation of the American Constitution and government. Charles Beard's views on property are compared with writings from the eighteenth century. Beard's writings on property and his critics are examined in the first two chapters. Then, the thesis's two historical contexts are evaluated. Concentrating on the Enclosure Acts, the fourth chapter looks at the importance of land to the former Englishmen. The eighteenth century view of property is the focus of the fifth section. The last chapter contrasts the two different views of property. Beard believed that the Constitution was a conservative document that protected the property of the few over the many. The Founding Fathers actually included liberal protections for property in the eighteenth century.

This thesis discusses Mexican immigration into Texas, and the communities in which the immigrants settled. The focus is on Dallas, with particular emphasis placed upon the women of Little Mexico, a specific barrio there. Sources include interviews with the subjects and their descendants, newspaper articles, journals, unpublished theses about Little Mexico, and books.

This study identified and defined leader behaviors with two levels of leadership in a self-managed team organization. Job analysis methodology was used. A comparison of task importance values was made within groups and between hierarchical levels in the organization. Identified leader behaviors were compared with effective, traditional leader performance. Qualitative data collected throughout the investigation clarified an integrative model for effective organizations developed from the literature. The model included leader characteristics and team member behaviors when using self-managed teams.

New peripheral devices are being developed at an ever increasing rate. Before such accessories can be used in the UNIX environment (UNIX is a trademark of Bell Laboratories), they must be able to communicate with the operating system. This involves writing a device driver for each device. In order to do this, very detailed knowledge is required of both the device to be integrated and the version of UNIX to which it will be attached. The process is long, detailed and prone to subtle problems and errors. This paper presents a menu-driven utility designed to simplify and accelerate the design and implementation of UNIX device drivers by freeing developers from many of the implementation specific low-level details.

The effect of pH upon the aquatic toxicity of cyfluthrin was determined in 48 h static acute toxicity tests using 2nd instar Chironomus tentans larvae. Tests were conducted in both dechlorinated tap water and lake water of pH 8.0, 7.2, and 6.6. After 48 h, immobilized and dead larvae were removed and replaced with 2nd instar larvae to assess the persistence of toxicity. Midges were cultured in water adjusted to the pH values used in testing. Toxicity if cyfluthrin varied inversely with pH. An increase in the pH of tap water by 2 units resulted in a 2-decrease in toxicity. Toxicity of cyfluthrin also varied between tap and lake water of the same pH. EC50 values in lake water were approximately 2-3 times lower than those in tap water. Toxicity in the lake water and tap water at every pH tested was also significantly different when regression line elevations were compared. Natural waters amended with cyfluthrin were consistently more toxi to the chironomids than tap water of the same pH. Persistence of cyfluthrin at low pH also influenced chironomid behavior. Recovery of normal behavior generally began within 24 h at pH 8.0 At pH 6.0, recovery did not begin until …

Nine physiological measures were evaluated pre- to post-intervention on subjects participating in a university health promotion program over a seven-month period. Frequency of program attendance and choice of activity were also assessed. Of the 88 employees initially screened, most of the subjects were staff members (n=82, 93%),with a majority being female (n=68, 77%). Significant differences in physiological measures were found pre- to post-intervention between "higher" and "lower" cardiovascular risk participants, primarily due to the type of activity chosen. .The results indicate that health promotion programs at a university are an effective way to have an impact on employees in reducing their cardiovascular risk factors.

This study examined the effects of chronic ethanol intake on the density, affinity, and allosteric modulation of rat brain GABAA receptor subtypes. In the presence of GABA, the apparent affinity for the benzodiazepine agonist flunitrazepam was increased and for the inverse agonist R015-4513 was decreased. No alteration in the capacity of GABA to modulate flunitrazepam and R015-4513 binding was observed in membranes prepared from cortex, hippocampus or cerebellum following chronic ethanol intake or withdrawal. The results also demonstrate two different binding sites for [3H]RO 15-4513 in rat cerebellum that differ in their affinities for diazepam. Chronic ethanol treatment and withdrawal did not significantly change the apparent affinity or density of these two receptor subtypes.

Explorations is a three-movement experimental work for eighteen-piece jazz ensemble consisting of the following instruments: soprano saxophone, alto saxophone, two tenor saxophones, baritone saxophone, two trumpets, two flugelhorns, three trombones, bass trombone, electric guitar, vibraphone, contrabass, drums and piano. The duration of the work will approximate twelve minutes. The first movement features geometric configurations of spatially notated sound which emphasize percussive qualities of the ensemble (i.e. key clicks, tongue slaps, mouthpiece pops, etc.). Tone clusters of various pitch, texture and dynamics derived from blues scales provide the source material for the second movement. A slowly developing dynamic counterpoint creates the sound mass texture and delineates the form. Movement Three features a contrapuntal poly-metric collage of variations on a four-note theme. The collage provides the background fabric for an exchange of periodic and aperiodic events.

Q-Beta phage RNAs with inactivating insertion (8 base) or deletion (17 base) mutations within their replicase genes were transfected into Escherichia coli spheroplasts containing QB replicase provided in trans by a resident plasmid. Replicase-defective (Rep~) Q3 phage produced by these spheroplasts were unable to form plaques on cells lacking this plasmid. When individual Rep~ phage were isolated and grown to high titer in cells containing plasmid derived Q3 replicase, revertant Q3 phage (Rep'), with the original mutation (insertion or deletion) repaired, were obtained at a frequency of ca. 1 x 108. RNA recombination via a "template switching" mechanism involving Q3 replicase, the mutant phage genome, and the plasmid-derived replicase mRNA was shown to be the primary means by which these mutant phages reverted to wild type.

It was impossible to document all of the important dancers of the era; however, certain individuals were notably exceptional. The purpose of this study was to document and illustrate some of those dancers who impacted and influenced the development of American vernacular dance during the early twentieth century through the mid-1940's. The individuals chosen were as follows: Dewey "Pigmeat" Markham, John Bubbles, Bill Robinson, Earl "Snakeships" Tucker, James Walker and Charles Green (Chuck and Chuckles), Katherine Dunham, Honi Coles and Cholly Akins (Coles and Akins) Josephine Baker, The Derry Brothers (Ananias, Jimmy and Warren), Eddie Rector, Willa Mae Ricker and Leon James. Emphasis was concentrated on capturing an accurate likeness of the individuals as well as on establishing a specific mood. Since all of the above-mentioned individuals were dancers, a special effort was made to recreate the lighting and aura of the stage.

This study examines whether water conservation is actually being incorporated into municipal water management practices. The development of a conservation policy from a general goal declaration to specific programmatic practices is reviewed for a Texas state water agency, the Texas Water Development Board. From January 1986 through September 1989, 102 political units in Texas applied to the Board for water-related loan funds and thus were required to implement municipal water conservation plans. Two aspects of this conversation policy are assessed: one, the Board's procedural arrangements for the development and review of water conservation plans, and two, the conservation plans of each political unit. It is concluded that Texas state water managers, and local manager also, have yet to incorporate conservation as a significant planning tool for the achievement of water management goals.

The temperature dependence of the reactions of halogen atoms Cl and Br with SiH4 and (CH3)3SiH have been investigated with the flash photolysis-resonance fluorescence technique. CCI4 and CH2Br2 were used as precursors to produce Cl and Br atoms, respectively. Experiments gave {k(Cl + SiH4) (295 - 472 K)} = (1.56 +0.11) x 10-1 exp[(2.0 + 0.2) kJ mol'/RT] cm3 s4, {k(Br + SiH4)(295 - 575 K)} = (9.0 + 1.5) x 10-" exp[-(17.0 + 0.6) Id mol'/RT] cm3 s', {k(Cl + (CH3)3SiH)(295 - 468 K)} = (1.24 0.35) x 104 exp[(1.3 + 0.8) Id mol4/RT] cm3 s', and {k(Br + (CH3)3SiH)(295 - 456 K)} = (7.6 + 3.3) x 1010 exp[-(28.4 + 1.3) Id mol'/RT] cm3 s'. The results were compared with values from earlier work.

Evidence is reported for the formation of carbon-containing contamination products at the copper-tungsten (Cu-W) interface during the metal organic chemical vapor deposition (MOCVD) of copper on tungsten. Cu(II)bishexafluoroacetylacetonate [Cu(hfac)_2] was physisorbed onto lightly oxidized tungsten (WO_x) at 115K, under ultra-high vacuum conditions, and then annealed sequentially to higher temperatures. Copper reduction was observed by 320K. Carbonaceous and carbidic contamination of the WO_x surface was observed, even after sample warming to 625K in UHV. The results indicate that low temperature MOCVD of Cu may be possible, but interfacial contamination from the organic ligand fragmentation is a major concern.

Previous scholarship on labor rhetoric has concentrated on the impact of declining union membership and contemporary activist strategies on the part of unions. The press release is a common form of communication that organized labor employs in order to reach its publics. This study explores the press releases of the Texas State AFL-CIO to determine to what extent this level of labor discourse meets the criteria of a rhetorical genre. This study employs the methodology for generic criticism laid out by Foss for identifying genres. The study concludes that a genre of labor rhetoric exists and that the genre was used extensively to promote the Texas State AFL-CIO as a socially-conscious and politically motivated organization.

A collection of poems focused primarily on rural America and the South, the creative writing thesis also includes material concerned with the history of Mexico, particularly Mexico at the time of the Spanish Conquest. The introduction combines a personal essay with critical material discussing and defining the idea of the Southern writer.

"Down and Out in Paris and London" is typically perceived as non-political. Orwell's first book, it examines his life with the poor in two cities. Although on the surface "Down and Out" seems not to be about politics, Orwell covertly conveys a political message. This is contrary to popular critical opinion. What most critics fail to acknowledge is that Orwell wrote for a middle- and upper-class audience, showing a previously unseen view of the poor. In this he suggests change to the policy makers who are able to bring about improvements for the impoverished. "Down and Out" is often ignored by both critics and readers of Orwell. With an examination of Orwell's politicizing background, and of the way he chooses to present himself and his poor characters in "Down and Out," I argue that the book is both political and characteristic of Orwell's later work.

The purpose of this study was to predict VO2pak using ratings of perceived exertion (RPE), heart rate (HR), and percent fat (PFAT). Subjects were males (n= 60) (PFAT, M SD = 14.4 6.1) and females (n= 67) (PFAT, M SD = 23.4 4.9) with ages ranging from 18 to 33 years. Subjects performed an incremental cycle ergometer protocol and RPE, HR and Vo2 were measured at each stage until VO2 ak was achieved. Mean RPE and HR at the submaximal workload of 100 watts were, (RPE100) M= 12.7 2.6 and (HR100) M= 146.924.7 respectively. Correlations (p< .001) with VO2p. were -.75 (PFAT), -.66 (HR100), -.67 (FIPE100). The multiple correlation using PFAT, HR100, and RPE100 as predictors of VO2pak was .83 (SEE= 5.28 ml-kg BW'smin"). Each predictor contributed to the correlation (p<.01). The results indicate that PFAT combined with exercise responses of RPE and HR provide valid estimates of VO2peak with a relatively small SEE.

The act of putting anything on a base isolates it and makes it seem more precious. The base separates the viewer from the sculpture and affects the relationship between the sculpture and viewer. The problem for me was to remove the base and experiment with the possibilities now opened to my work. The purpose of this study was to explore the presentation potentials of sculpture freed from the constraints of the plinth.

The incidence of both childhood sexual abuse and eating disorders is rising. A study of 422 undergraduate college females was undertaken using self report format to determine the incidence of childhood sexual abuse and eating disorders in a college population, and to determine the relationship between the two. In all, 57% of the women surveyed reported experiencing some form of sexual contact before the age of 14. Using the EDI-2 to assess risk of eating disorder development, 42% of these formerly abused women were found to be at risk for the development of an eating disorder. This was not found to be statistically different from the risk of eating disorder development experienced by the nonabused females in this population. However, there were differences found on the dimensions of Interpersonal Distrust, Interoceptive Awareness and Ineffectiveness, indicating that two of the major issues in eating disorder development for the abused women are trust both of themselves and of others, and self-esteem.