Thesis (M.S.)--University of North Texas, May, 2008. / Title from title page display. Includes bibliographical references.

Comanche Boys is a novel that was written and revised during Benjamin Honea’s time at the University of Kentucky. The novel focuses on Brandon, who lives in rural southwest Oklahoma, and how the arrival of two people in his life, one old and one new, changes his future irrevocably. Taking place at the intersections of modern American and Native American life, the narrative explores history, culture, mythology, faith, despair, racism, poverty, vengeance, and justice. The struggles of the past and present, the lost and reclaimed, propel and pervade the lives of the characters.

The presence of deposits on the secondary side of pressurized water reactor (PWR) steam generator systems is one of the main contributors to the high maintenance costs of these generators. Formation and transport of corrosion products formed due to the presence of impurities, metals and metallic oxides in the secondary side of the steam generator units result in formation of deposits. This research deals with understanding the deposit formation and characterization of deposits by studying the samples collected from different units in secondary side system at Comanche Peak Steam Electric Station (CPSES). Fourier transform infrared spectrophotometry (FTIR), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) have been used for studying the phases, morphologies and compositions of the iron oxides formed at Unit 1 and Unit 2 of secondary side of steamgenerator systems. Hematite and magnetite were found to be the dominant phases of iron oxides present in the units. Fe, Cr, O, Ni, Si, Cl and Cu were found in samples collected from both the units. A qualitative method was developed to differentiate iron oxides using laser induced breakdown spectroscopy (LIBS) based on temporal response of iron oxides to a high power laser beam. A quantitative FTIR technique was developed to identify and quantify iron oxides present in the different components of the secondary side of the steam generator of CPSES. Amines are used in water treatment to control corrosion and fouling in pressurized water reactors. CPSES presently uses an amine combination of dimethylamine (DMA), hydrazine and morpholine to control the water chemistry. Along with the abovementioned amines, this study also focuses on corrosion inhibition mechanismsof a new amine DBU (1, 8-diazabicyclo [5.4.0] undec-7-ene). Electrochemical impedance spectroscopy and polarization curves were used to study the interaction mechanism between DBU solution and inconel alloys 600 and 690 at steamgenerator operating temperatures and pressures. Of all the amines used in this study (DMA, DBU, ETA, and morpholine), DMA was more effective at keeping the passive film formed on the alloy 600 surface from failing at both ambient and high temperatures. Morpholine was found result in higher corrosion resistance compared to the other amines in case of alloy 690.

<p>In the winter of 1819 the United States shook under the first Great Depression, and on the Missouri River a great military/scientific enterprise sent to secure Missouri Territory shivered and died from cholera and scurvy. In 1820 Maj. Stephen Long and a poorly equipped expedition of twenty-three soldiers, amateur scientists, and landscape painters, set out from Engineer Cantonment to circumnavigate the unknown Central Great Plains during the height of summer, and rescue something from the debacle. After weathering endless rain and hallucinating waves of Comanche, they divided into two groups at the Arkansas, and then either starved and endured weeks of rain on the lower Arkansas, or ate rancid skunk and endured blistering sun on the 'Red River'. On return they found Long had 'mistaken' the Canadian River for the Red, and that they were yet another failed expedition to know the Louisiana Purchase. Unsurprisingly, Long labeled the whole place a "great desert." An editor improved the phrase to <i>Great American Desert</i>, and emblazoned the phrase on history.</p> <p><i>A Persistent Mirage</i> is both an exegesis of the GAD myth and an HGIS study of the groups and biomes the desert mirage occludes. Desert was a cultural term meaning <i>beyond the pale</i> that beached with the Puritans. Like Turner's frontier, it stayed a step ahead of settlement, moving west to the tall grass prairies before crossing the Mississippi to colonize the Great Plains. Once there it did calculable damage to the writing of Plains Aboriginal history. After all, who lives upon deserts but wandering beasts and savages? Beneath the mirage was an aboriginal network of agricardos, or agricultural and trading centers, growing enough food to support large populations, and produce tradable surpluses, under-girded by bison protein. Euramericans from Cabeza de Vaca on were drawn to agricardos which helped broker the passages of horses to the Northern Plains and of firearms to the Southwest. While some withstood epidemic disease, the escalation of inter-group violence and environmental degradation due to the adoption of the horse by agricardo groups proved their undoing. Beneath the Great American Desert lies the great Indian agricardo complex, with its history just begun.</p>

<p>In the winter of 1819 the United States shook under the first Great Depression, and on the Missouri River a great military/scientific enterprise sent to secure Missouri Territory shivered and died from cholera and scurvy. In 1820 Maj. Stephen Long and a poorly equipped expedition of twenty-three soldiers, amateur scientists, and landscape painters, set out from Engineer Cantonment to circumnavigate the unknown Central Great Plains during the height of summer, and rescue something from the debacle. After weathering endless rain and hallucinating waves of Comanche, they divided into two groups at the Arkansas, and then either starved and endured weeks of rain on the lower Arkansas, or ate rancid skunk and endured blistering sun on the 'Red River'. On return they found Long had 'mistaken' the Canadian River for the Red, and that they were yet another failed expedition to know the Louisiana Purchase. Unsurprisingly, Long labeled the whole place a "great desert." An editor improved the phrase to <i>Great American Desert</i>, and emblazoned the phrase on history.</p> <p><i>A Persistent Mirage</i> is both an exegesis of the GAD myth and an HGIS study of the groups and biomes the desert mirage occludes. Desert was a cultural term meaning <i>beyond the pale</i> that beached with the Puritans. Like Turner's frontier, it stayed a step ahead of settlement, moving west to the tall grass prairies before crossing the Mississippi to colonize the Great Plains. Once there it did calculable damage to the writing of Plains Aboriginal history. After all, who lives upon deserts but wandering beasts and savages? Beneath the mirage was an aboriginal network of agricardos, or agricultural and trading centers, growing enough food to support large populations, and produce tradable surpluses, under-girded by bison protein. Euramericans from Cabeza de Vaca on were drawn to agricardos which helped broker the passages of horses to the Northern Plains and of firearms to the Southwest. While some withstood epidemic disease, the escalation of inter-group violence and environmental degradation due to the adoption of the horse by agricardo groups proved their undoing. Beneath the Great American Desert lies the great Indian agricardo complex, with its history just begun.</p>

The presence of deposits leading to corrosion of the steam generator (SG) systems is a major contributor to operation and maintenance cost of pressurized water reactor (PWR) plants. Formation and transport of corrosion products formed due to the presence of impurities, metallic oxides and cations in the secondary side of the SG units result in formation of deposits. This research deals with the characterization of deposit samples collected from the two SG units (unit 1 and unit 2) at Comanche Peak Steam Electric Station (CPSES). X-ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) techniques have been used for studying the compositional and structural properties of iron oxides formed in the secondary side of unit 1 and unit 2. Magnetite (Fe3O4) was found to be predominant in samples from unit 1 and maghemite (g-Fe2O3) was found to be the dominant phase in case of unit 2. An attempt has been made to customize FTIR technique for analyzing different iron oxide phases present in the deposits of PWR-SG systems.

Flow accelerated corrosion (FAC) is a major concern in the power industry as it causes thinning of the pipes by the dissolution of the passive oxide layer formed on the pipe surface. Present research deals with comparing the protection offered by the magnetite (Fe3O4) versus maghemite (γ-Fe2O3) phases thickness loss measurements. Fourier transform infrared spectroscopy (FTIR) is used in distinguishing these two elusive phases of iron oxides. Representative pipes are collected from high pressure steam extraction line of the secondary cycle of unit 2 of Comanche Peak Steam Electric Station (CPSES). Environmental scanning electron microscopy (ESEM) is used for morphological analysis. FTIR and X-ray diffraction (XRD) are used for phase analysis. Morphological analysis showed the presence of porous oxide surfaces with octahedral crystals, scallops and "chimney" like vents. FTIR revealed the predominance of maghemite at the most of the pipe sections. Results of thickness measurements indicate severe thickness loss at the bend areas (extrados) of the pipes.

This study was designed to determine if impingement and entrainment by cooling water intake at the Comanche Peak Steam Electric Station have an adverse impact upon the Squaw Creek Reservoir fish population. The yearly impingement of fish was estimated to be 262,994 of 14 species. The threadfin shad (Dorosoma petenense) accounted for 96% of this total. Entrainment of eggs and larvae for a five month period was estimated to be 15,989,987 and 42,448,794 respectively. Two fish population studies were performed on Squaw Creek Reservoir to help assess impact. It was determined that the losses due to impingement and entrainment have no adverse impact upon the fish population of Squaw Creek Reservoir.

Although the Council House Fight is well written about in the annals of early Texas history, this all-encompassing study will reveal a whole new picture. Unlike previous works that maintained one point of view, multiple perspectives were analyzed and explored to allow a more comprehensive view of the Council House Fight to emerge. Primary focus on social and cultural misunderstandings, as well as the mounting hostility between the Penateka Comanche and Texians across the frontier, will demonstrate their general distrust and hatred of the other. Detailing their complicated relationship will prove that neither the Texians nor the Comanche were without blame, and both shared responsibility for the deterioration of events on and before March 19, 1840.

Friedrich Armand Strubberg’s semi-autobiographical novel Friedrichsburg, published in Germany in 1867, is a fountain of information about the German settlements in the Hill Country of Texas established in the years 1844-1848 by a corporation of German noblemen. The noblemen safely ensconced in their comfortable estates in Germany attempted to live up to their responsibilities and supply the settlers with basic needs, but their efforts fell woefully short. In consequence, the immigrants often were thrown upon their own devices and compelled to live from what they could learn to grow or hunt in a new land with unfamiliar climate, plants, and animals. Many hundreds perished from disease, exposure, and malnutrition. But after a painful period, the German settlements took root and began to prosper; lending a Germanic stamp to the Hill Country area of Texas that persists to the present day. In Friedrichsburg, the reader encounters many dramatic stories attendant to the foundation years of Fredericksburg, Texas, 1846/1847 when Friedrich Armand Strubberg, under the assumed name Dr. Schubbert, served as the first colonial director of the town. The situations are presented vividly and entertainingly, and although the book offers a romanticized and, in this sense, a sanitized version of the immigrants’ travails, I maintain that it contains historically accurate depictions of people and events that have been largely overlooked in other accounts of the period. The dissertation offers the first complete translation of the novel. An introduction provides an overview of German immigration in Texas, a short biography of Friedrich Armand Strubberg, and a discussion of his place in literature about Texas published in Germany in the nineteenth century. Extensive endnotes document names and episodes as they appear in the text and distinguish between what is fact and what is fiction in the novel. A bibliography of works published about Texas in the nineteenth century is supplied as an appendix. / text