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Nature, Culture And Big Old Trees: Human Relationships With Ceiba (Ceiba Pentandra) And Live Oak (Quercus Virginiana) In The Landscapes Of Guatemala And Louisiana., Katharine Anderson Jan 1997

Nature, Culture And Big Old Trees: Human Relationships With Ceiba (Ceiba Pentandra) And Live Oak (Quercus Virginiana) In The Landscapes Of Guatemala And Louisiana., Katharine Anderson

LSU Historical Dissertations and Theses

The ceiba in Guatemala and the live oak in Louisiana are examples of two trees that attain great size and age within the cultural landscape. Humans have adopted both as symbolic trees; they protect, encourage and even plant them. As the trees age, they become historic landmarks, are indicators of important places, and give character to the landscape. Although each tree is native within portions of each study area, both have taken advantage of human disturbance to expand beyond their original habitats. In addition, they have been moved deliberately by humans to new areas well beyond their geographical limits. Other …

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Macrofaunal Community Structure In The Introduced And Native Submerged Macrophyte Beds Of The Lake Pontchartrain Estuary., Kenneth Charles Duffy Jan 1997

Macrofaunal Community Structure In The Introduced And Native Submerged Macrophyte Beds Of The Lake Pontchartrain Estuary., Kenneth Charles Duffy

LSU Historical Dissertations and Theses

Introductions of exotic aquatic plants raise concerns for the health of assemblages of native species. The possible influence of the establishment of the exotic Eurasian watermilfoil Myriophyllum spicatum on fish and invertebrate assemblages in the Lake Pontchartrain estuary was examined with a microhabitat approach. Fish and invertebrate assemblage structure and population responses were compared among macrophyte species and unvegetated areas. Native macrophytes included wild celery Vallisneria americana and wigeongrass Ruppia maritima. Additionally, the relationships of the common submerged macrophytes to environmental and temporal variables were analyzed. A total of 517 samples, collected with a modified Wegener ring, included 3,564 fishes …

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Development And In Vivo Evaluation Of A Pura Mutant Strain Of The Channel Catfish Pathogen Edwardsiella Ictaluri., Mark Lee Lawrence Jan 1997

Development And In Vivo Evaluation Of A Pura Mutant Strain Of The Channel Catfish Pathogen Edwardsiella Ictaluri., Mark Lee Lawrence

LSU Historical Dissertations and Theses

Edwardsiella ictaluri is the causative agent of enteric septicemia of catfish (ESC), which is the most serious disease affecting the channel catfish industry. Killed vaccines have been inconsistent in providing protection against ESC, and no live attenuated vaccines have been described. The purpose of this study was to develop a nutritionally attenuated mutant strain of E. ictaluri and evaluate its virulence and vaccine efficacy. An E. ictaluri genomic library was constructed, and a clone containing the purA gene was isolated and sequenced. The E. ictaluri purA gene was found to have several features in common with the E. coli purA …

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Genotype By Environment Interaction For Ear Moisture Loss Rate In Corn., Robert T. Magari Jan 1997

Genotype By Environment Interaction For Ear Moisture Loss Rate In Corn., Robert T. Magari

LSU Historical Dissertations and Theses

Corn (Zea mays L.) hybrids with rapid ear moisture loss rate (EMLR) are needed to reduce post-harvest production costs relative to artificial grain drying. Previous investigations indicated that genetic variation for grain dry-down rate existed; however, genotype by environment interaction (GEI) for this trait has not been specifically investigated. The objectives of this study were: (1) to evaluate EMLR and stability of selected commercial corn hybrids in different environments, (2) to determine approximate optimum numbers of plants per plot, replications, and environments for evaluating EMLR, and (3) to assess the contribution of known environmental factors to GEI for EMLR. Experiments …

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Global Experimental Effects Of Country Of Origin And Product Type On The Structural Parameters Of A Purchase Intentions Model., Ruth L. Lumb Jan 1997

Global Experimental Effects Of Country Of Origin And Product Type On The Structural Parameters Of A Purchase Intentions Model., Ruth L. Lumb

LSU Historical Dissertations and Theses

An empirical assessment of the overall effects of country of origin and product type on the structural parameters of a purchase intentions model is undertaken. First, it is theorized that (1) product involvement, (2) perceived risk, (3) psychic distance, (4) perceived product quality, and (5) national character will directly or indirectly affect purchase intentions of imported goods. These constructs form the operational framework for purchase intentions of foreign-made products, which is presented in the form of a structural equation model. Secondly, it is proposed that country of origin and product type may be viewed as global experimental variables, thereby having …

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Development Of Thin Gold Film Thermal Sensors For Synchrotron X-Ray Exposure Diagnostics., Harish M. Manohara Jan 1997

Development Of Thin Gold Film Thermal Sensors For Synchrotron X-Ray Exposure Diagnostics., Harish M. Manohara

LSU Historical Dissertations and Theses

High aspect ratio lithography utilizes high intensity exposure sources, such as synchrotron storage rings, to deposit sufficient dose in the resist to produce a successful pattern transfer. Such highly powerful sources are known to cause undesirable thermal effects in the mask-resist-substrate system. Hence, the measurement of temperature of a mask-resist-substrate system during irradiation is an important exposure diagnostic feature. Deposition of a reasonably accurate dose in the resist is controlled by knowledge of the exposure source intensity. Periodic monitoring of the synchrotron radiation beam power and its spatial distribution at the exposure plane is necessary. In this research, diagnostic techniques …

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Moved By The Spirit: Protestant Diffusion And Church Location In Central America, With A Case Study From Southwestern Honduras., Terri Shawn Mitchell Jan 1997

Moved By The Spirit: Protestant Diffusion And Church Location In Central America, With A Case Study From Southwestern Honduras., Terri Shawn Mitchell

LSU Historical Dissertations and Theses

This dissertation traces the evolution of Protestant missions in Central America from the colonial period to the present, focusing on the agents, direction, and methods of Protestant diffusion as well as the changing criteria for site selection. Chapters are arranged chronologically and progress from the macro-scale, Central America, to the micro-scale, six towns in southwestern Honduras (La Esperanza, Intibuca, Yamaranguila, San Juan, Erandique and Gracias). The chapters dealing with Central America outline when and where different mission boards have worked, as well as the geographical, economic, political and theological considerations driving site selection. The focus then narrows to patterns of …

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Coastal Management Regarding Beach And Dune Protection: An Exploratory Analysis., Melissa Lee Gordon Jan 1997

Coastal Management Regarding Beach And Dune Protection: An Exploratory Analysis., Melissa Lee Gordon

LSU Historical Dissertations and Theses

The Congressional declaration of national coastal policy in Section 303 of the Federal Coastal Zone Management Act (CZMA) of 1972 charges the coastal states to meet the objective of coastal resource protection. At this time, when the appropriate mix of authority between federal and state governments concerning environmental regulations is in debate; it is important to determine whether the inter-governmental partnership created by CZMA is effective in protecting coastal resources. This research is an exploratory analysis of coastal management regarding beach and dune protection within the twenty-four coastal states. The dissertation objectives are as follows: (1) determine the level of …

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Synthesis Of Monodisperse Poly(Gamma-Benzyl-Alpha,L-Glutamate) Oligomers And Their Star-Shaped Derivatives., Xiaolan Wang Jan 1997

Synthesis Of Monodisperse Poly(Gamma-Benzyl-Alpha,L-Glutamate) Oligomers And Their Star-Shaped Derivatives., Xiaolan Wang

LSU Historical Dissertations and Theses

Poly($\gamma$-benzyl-$\alpha$,L-glutamate), PBLG, is a widely studied example of polypeptides. The preparation of monodisperse samples of PBLG and PBLG oligomer is difficult to achieve. In this work we probe the possibility of preparation of PBLG oligomers by polymerization of L-glutamic acid N-carboxyanhydride (NCA) with different initiators such as primary amine, sterically hindered secondary amine, tertiary amine, and strong base. Information regarding molecular weight distribution of these oligomers was obtained by applying MALDI-TOF mass spectrometry and reversed phase HPLC. While some researchers reported that application of primary amine initiators or polar solvents such as DMF could improve the molecular weight distributions of …

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Visualizing Autobiography: Intersections Of Gender, Representation, Curriculum Theory., Anne Elizabeth Pautz Jan 1997

Visualizing Autobiography: Intersections Of Gender, Representation, Curriculum Theory., Anne Elizabeth Pautz

LSU Historical Dissertations and Theses

Defined by customs of femininity, women who transcend those definitions find it difficult to represent themselves in a comprehensible manner. The contradictions between the actual activities of life and the demands of femininity require woman to adopt unique approaches to self-representation in order to be accepted. Tied to the biological functions of their bodies through images in the media and social institutions, as well as their internalized images, women often find trying to represent themselves beyond or against their body problematic. The female body is presented as controller of destiny, both through beauty and motherhood requirements. Women often create representations …

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Towards Bimetallic Asymmetric Hydroformylation Catalysis: Separation Of The Diastereomers And Enantiomers Of A Binucleating Tetraphosphine Ligand., Pia Rosario Alburquerque Jan 1997

Towards Bimetallic Asymmetric Hydroformylation Catalysis: Separation Of The Diastereomers And Enantiomers Of A Binucleating Tetraphosphine Ligand., Pia Rosario Alburquerque

LSU Historical Dissertations and Theses

The separation of the racemic and meso diastereomers of the binucleating ligand et,ph-P4 ((Et$\rm \sb2PCH\sb2CH\sb2)(Ph)PCH\sb2P(Ph)(CH\sb2CH\sb2PEt\sb2))$ was achieved. The thiocyanate nickel(II) complexes of mixed racemic- and meso-et,ph-P4 were separated based on their different solubilities in ethanol. Cyanolysis of the separated racemic and meso nickel(II) complexes allowed the recovery of the free racemic- and meso-et,ph-P4 ligands. The many species involved in this process were identified in order to obtain consistent and improved results. After the separation of the diastereomers, the enantiomers of racemic-et,ph-P4 were separated in order to study the ability of the bimetallic chiral rhodium et,ph-P4 complexes to act as precursors …

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Causes Of Vegetation Dieback And Subsequent Wetland Loss In Two Louisiana Coastal Marshes., Eric Courtney Webb Jan 1997

Causes Of Vegetation Dieback And Subsequent Wetland Loss In Two Louisiana Coastal Marshes., Eric Courtney Webb

LSU Historical Dissertations and Theses

Vegetation dieback is an important component of the wetland loss process in coastal Louisiana. To determine the factors causing vegetation dieback in a Louisiana salt marsh and oligohaline marsh, field monitoring and manipulative field experiments were conducted in both marsh types. In the salt marsh, a three-year field study was conducted in which biotic and edaphic characteristics were measured and the effect of elevation on four salt marsh plant species was tested in a manipulative field experiment. In the oligohaline marsh, a two-year field study was conducted which evaluated the relationship between biotic and edaphic characteristics. Additionally, the effects of …

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Caprine Sperm Cells As Vectors For Gene Transfer., Yongxin Sun Jan 1997

Caprine Sperm Cells As Vectors For Gene Transfer., Yongxin Sun

LSU Historical Dissertations and Theses

Goat sperm cells were used as a model to evaluate sperm-mediated gene transfer. Fresh and frozen-thawed goat sperm cells were co-incubated with radio-labelled foreign DNA. After 10 extensive washings, the compacted sperm retained foreign DNA. Confocal microscopy confirmed that the position on the sperm cell responsible for binding of foreign DNA was located in both the anterior and the posterior heads of caprine sperm cells. Furthermore, confocal longitudinal sections of the sperm cells showed that foreign DNA had penetrated into goat sperm nuclei. In this study, 37% of the fresh goat sperm and 33% of the frozen-thawed goat sperm cells …

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Acid Solubilization Of Fish Protein For Production Of Protein Hydrolysate., Ercument Ozer Jan 1997

Acid Solubilization Of Fish Protein For Production Of Protein Hydrolysate., Ercument Ozer

LSU Historical Dissertations and Theses

The mechanism of fish protein solubilization by acid hydrolysis at elevated temperatures was investigated. Rate expressions for the solubilization were determined using pilot scale data with two different rate determination methods. A postulated mechanism was verified and estimated rates were evaluated on five independent verification experiments. A functional relationship between nonprotein byproduct concentration and whiteness of fish protein hydrolysate (FPH) was developed. Initial and set-point operating variables were calculated to produce FPH with acceptable color characteristics for food use. A batch reactor was used for duplicate hydrolysis trials conducted at three acid and three temperature levels for four hours. Samples …

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The Florida Chautauqua As Text: Creating And Satisfying A Disposition To Appropriate Cultural Goods In Northwest Florida., Matthew Albert Beemer Jan 1997

The Florida Chautauqua As Text: Creating And Satisfying A Disposition To Appropriate Cultural Goods In Northwest Florida., Matthew Albert Beemer

LSU Historical Dissertations and Theses

The purpose of this dissertation is to demonstrate that the Florida Chautauqua in De Funiak Springs, Florida, was primarily a commercial venture which pretended to a goal of offering cultural, educational, and religious products. In the Chautauqua's early years, it succeeded because it could exploit the economic and cultural situation. The Assembly tried to create a market for "culture" by developing cultural competencies in potential consumers so that those consumers would "buy" what the Chautauqua could sell. As the situation changed, the Florida Chautauqua, though it tried, could not adapt enough to be viable. To support the argument, I describe …

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Personal And Organizational Structure Correlates Of Receptivity And Resistance To Change And Effectiveness In Institutions Of Higher Education., James Sutherland Clarke Jan 1997

Personal And Organizational Structure Correlates Of Receptivity And Resistance To Change And Effectiveness In Institutions Of Higher Education., James Sutherland Clarke

LSU Historical Dissertations and Theses

The purpose of this exploratory study was three-fold. First, a conceptual framework was developed to link innovation and organizational effectiveness in higher education settings through the mediating variables of faculty decision-making deprivation, self-efficacy, organizational efficacy, receptivity to change and resistance to change. Second, original instrumentation was developed to measure faculty receptivity and resistance to change and academic unit head perspectives of their unit's effectiveness. Third, linkages between the variables were examined through the collection and analysis of data using structure equation modeling and appropriate variable comparisons. The sample consisted of all faculty from five traditional academic units at all 59 …

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Late Quaternary Foraminifera From Lower Bathyal And Abyssal Sediments, Gulf Of Mexico: A Record Of Paleoceanographic Change., Megan H. Jones Jan 1997

Late Quaternary Foraminifera From Lower Bathyal And Abyssal Sediments, Gulf Of Mexico: A Record Of Paleoceanographic Change., Megan H. Jones

LSU Historical Dissertations and Theses

Striking late Quaternary surface- and deep-water oceanographic changes and a link to North Atlantic thermohaline circulation are identified by analyses of high-resolution, benthic and planktic foraminiferal census data from the lower bathyal and abyssal Gulf of Mexico (GOM). The recognized environmental, watermass, preservation, and productivity signals reveal a detailed paleoenvironmental and paleoceanographic history. A paleoceanographic model developed for surface and deep waters of the abyssal Gulf describes a four-stage sequence of oceanographic changes from the Last Glacial Maximum (LGM) to the present. Compared to present-day surface waters, those of LGM were nutrient-enriched and had reduced productivity. The influx of glacial …

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Negotiating Literacy Instruction: Pedagogical Perceptions Of Secondary Preservice Teachers., Julie Hill Lester Jan 1997

Negotiating Literacy Instruction: Pedagogical Perceptions Of Secondary Preservice Teachers., Julie Hill Lester

LSU Historical Dissertations and Theses

Secondary teachers face the challenge of planning instructional activities that combine their own subject knowledge with information from textbooks and other forms of text to help students learn content material. This study explores preservice teachers' perceptions regarding literacy instruction within the context of teaching and learning content material. The participants are senior secondary education students enrolled in a content area literacy course at a regional university in the southeast. Case studies are constructed for six preservice teachers representing different content areas. Qualitative data collection procedures included a questionnaire, guided journal entries, literacy autobiography, and personal interviews. Cross-case analysis was employed. …

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Ephemeral Hinterlands And The Historical Geography Of Trujillo, Honduras, 1525-1950., Taylor E. Mack Jan 1997

Ephemeral Hinterlands And The Historical Geography Of Trujillo, Honduras, 1525-1950., Taylor E. Mack

LSU Historical Dissertations and Theses

The historical geography of Trujillo, Honduras is told through its changing hinterlands. This dissertation uses world systems to approach and understand the historical geography of Trujillo, however, the focus is on this peripheral area of the world system, rather than on the core. The coast of the western Caribbean experiences economic boom and bust cycles. The periodization of Trujillo's historical geography is based on the city's boom and bust periods, using primary documents from archives in Central America and Spain. Trujillo's first boom period lasted from its founding in 1525 until 1550, based on gold exports from the interior. During …

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Feasibility Study On The Reduction Of Hydrostatic Pressure In A Deep-Water Riser Using A Gas-Lift Method., Clovis Antonio Lopes Jan 1997

Feasibility Study On The Reduction Of Hydrostatic Pressure In A Deep-Water Riser Using A Gas-Lift Method., Clovis Antonio Lopes

LSU Historical Dissertations and Theses

Recent successful exploration efforts in deep waters have heightened interest in developing oil and gas reservoirs on the continental slope. Leases have been obtained in water depths up to 10,000 ft with a requirement that they be drilled within the next decade. Use of current techniques to drill these leases will require extremely large floating drilling units and large diameter marine riser systems. This study presents the results of a feasibility study on the use of an automated gas-lift system for a marine riser that will maintain the hydrostatic pressure in the subsea well-head equal to that of the sea …

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Preparation Of Strained Nitrogen Heterocycles For Spin Trapping Applications., Anna Patrice Shanklin Jan 1997

Preparation Of Strained Nitrogen Heterocycles For Spin Trapping Applications., Anna Patrice Shanklin

LSU Historical Dissertations and Theses

This work discusses the synthesis of bicyclic nitrogen heteorocycles with the emphasis placed on the design and evaluation of a bicyclic nitrone for spin trapping applications. Camphorolactams, 1,7,7-trimethyl-2-aza-bicyclo(2.2.1) heptan-3-one and 1,7,7-trimethyl-3-azabicyclo (2.2.1) heptan-2-one were prepared from camphoric anhydride under Curtius conditions with sodium azide and dimethylformamide. 2-azabicyclo(2.2.1) heptan-3-one was also prepared under Curtius conditions from cis-1,3-cyclopentane-dicarboxylic acid anhydride. N-benzyl-2-azabicyclo (2.2.1) -heptane and N-benzyl-2-azabicyclo (2.2.2) octane were prepared from their aliphatic amine derivatives under Hofmann-Loeffler conditions in low yields. 1,3,3-trimethyl-6-azabicyclo (3.2.1) octane, N-oxide was prepared from its parent amine under sodium tungstate catalyzed oxidation with hydrogen peroxide. The bicyclic nitrone was …

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Factors Affecting Motivation To Use Computer-Based Training., Dian Lampkin Seyler Jan 1997

Factors Affecting Motivation To Use Computer-Based Training., Dian Lampkin Seyler

LSU Historical Dissertations and Theses

Billions of dollars are spent each year on training in an effort to increase productivity so businesses can stay competitive. However, little is known about factors that impact the trainee's decisions to use what they learned in these training programs, back on the job. Guided by a conceptual model of training evaluation and research, this research examined the influence of five sets of variables on training participant's motivation to use what they learned during a computer-based training (CBT) program in a large petro-chemical plant in southern Louisiana. The variables included in this study were: individual and general attitudes (love of …

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The Prism Of Laughter: Antebellum Humorists In Regional Perspective., Henry O. Robertson Jr Jan 1997

The Prism Of Laughter: Antebellum Humorists In Regional Perspective., Henry O. Robertson Jr

LSU Historical Dissertations and Theses

This work revises earlier interpretations of antebellum American humorists and sets forth a new model for understanding their accomplishments. Rooted in historical thinking, this study integrated biography, publishing history, critical responses, and a penetrating analysis of the sketches of several major figures. The first third examined Seba Smith, Joseph C. Neal, and Augustus Baldwin Longstreet. A devotion to their communities in Maine, Philadelphia, and Georgia, respectively, and preference for writing warm, genial selections remained important shared influences while cultural differences between the societies in which each matured and wrote made their humor diverge significantly. In both content and expression their …

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Gender Differences, Socialization, And Delay Of Gratification, Kristen K. Miller Jan 1997

Gender Differences, Socialization, And Delay Of Gratification, Kristen K. Miller

Honors Capstones

No abstract provided.

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Avoiding User Discomfort By Considering Paging Activity On The Workstations To Be Used By A Distributed Progam, Khalid Dawood Al-Dajani Jan 1997

Avoiding User Discomfort By Considering Paging Activity On The Workstations To Be Used By A Distributed Progam, Khalid Dawood Al-Dajani

Honors Capstones

No abstract provided.

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Tectonics And Sedimentation: The Evolution, Tectonic Influences And Correlation Of The Tanqua And Laingsburg Subbasins, Southwest Karoo Basin, South Africa., Erik Douglas Scott Jan 1997

Tectonics And Sedimentation: The Evolution, Tectonic Influences And Correlation Of The Tanqua And Laingsburg Subbasins, Southwest Karoo Basin, South Africa., Erik Douglas Scott

LSU Historical Dissertations and Theses

The Tanqua and Laingsburg subbasins developed in the southwest corner of the Karoo Basin, South Africa, during the late Permian. The subbasins had near-contemporaneous formation and filling, and each contain a number of submarine fans. Five submarine fan systems in the broad, shallow Tanqua have a lateral continuity of up to 34km. With a sandstone/shale ratio of 75-90%, the arenaceous fans vary in thickness from 20 to 60m. Intervening shales range from 20 to 75m. Four fan systems in the more typical foredeep style Laingsburg subbasin are thicker and a few hundred kilometers long. The history of both subbasins was …

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The Effects Of Homogenized Cream And Commercial Buttermilk Powder On Low-Fat Cheddar Cheese., Tonya Conner Schoenfuss Jan 1997

The Effects Of Homogenized Cream And Commercial Buttermilk Powder On Low-Fat Cheddar Cheese., Tonya Conner Schoenfuss

LSU Historical Dissertations and Theses

Seventy percent reduced fat Cheddar cheese was manufactured with homogenized cream and sweet cream buttermilk powder in an effort to improve flavor and texture characteristics. Manufacturing procedures, as well as the chemical, physical and sensory attributes. Pasteurized cream was homogenized (15.8 MPa) with and without the addition of buttermilk powder. The cream was added to pasteurized skim milk to produce two vats of cheese, one with and one without buttermilk powder. After milling, each vat was split to produce a washed curd and normal curd cheese. The four cheeses were sampled at week one, and months one, two and four. …

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Two Essays On Intraday Information Processing Of Stock Index Derivatives., Raymond Waiman So Jan 1997

Two Essays On Intraday Information Processing Of Stock Index Derivatives., Raymond Waiman So

LSU Historical Dissertations and Theses

The purpose of this dissertation is to examine two issues in intraday information processing among the spot index and index futures and index options. The first issue is price discovery. The second one is volatility spillover, especially the asymmetric effects of innovations in one market on the volatility of other markets. In this dissertation, data on the German stock and index derivative markets are employed. The choice of Germany is primarily due to data availability. Therefore, the German data employed here are mainly for illustrative purposes and this study is not country specific. The choice of German data is also …

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Relative Rates Of Molecular Evolution In Rodents And Their Symbionts., Theresa Ann Spradling Jan 1997

Relative Rates Of Molecular Evolution In Rodents And Their Symbionts., Theresa Ann Spradling

LSU Historical Dissertations and Theses

The focus of this dissertation is the relative tempo of molecular evolution among organisms of varying levels of relatedness. Because this is a rapidly expanding area of research, Chapter 1 is devoted to a review of the current state of knowledge on rates of molecular evolution. In Chapter 2, I present an analysis of relative rates of evolution among several distantly related rodents. The heterogeneity in rate of evolution of the cytochrome b gene observed here cannot be explained by metabolic rate, body size, generation time, or nucleotide-generation time. Likewise, there is no evidence that these differences in rate of …

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An Examination Of Two Contemporary Techniques In Five Works For Solo Bassoon: Descriptions And Performance Suggestions., Steve Vacchi Jan 1997

An Examination Of Two Contemporary Techniques In Five Works For Solo Bassoon: Descriptions And Performance Suggestions., Steve Vacchi

LSU Historical Dissertations and Theses

Much of the literature for solo bassoon of the past few decades is partially dependent upon the player's ability to use contemporary techniques. While it is atypical for an entire composition to rely on such devices, a significant volume of recent solo literature may be unplayable to those who have not mastered them. My aim is to help solo bassoonists in perfecting two specific contemporary techniques: fluttertongue and singing while playing. Though quite standard for other woodwind instruments such as the flute, these techniques have not been adequately described for bassoonists. The repertoire chosen for this project represents works for …

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