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Masked Criticism: The Whore And The Breeches Role As Articulators Of Sexual Economic Theory In The Intrigue Plays Of Aphra Behn., Mary Katherine Politz Jan 2000

Masked Criticism: The Whore And The Breeches Role As Articulators Of Sexual Economic Theory In The Intrigue Plays Of Aphra Behn., Mary Katherine Politz

LSU Historical Dissertations and Theses

Aphra Behn was an important playwright in the Restoration, second only to John Dryden in the number of plays produced during the period. In some of her early plays based on Spanish intrigue comedies, she uses the roles of whores and cross dressed women to articulate her criticism of the sexual economy within patriarchy. Masks and disguises create confusion in all the plays. Her characters, plots, structure, humor and economic concerns change with each successive play. The first play in the series, The Dutch Lover (1673) is a tale of romance where women are exchanged between men for the benefit …

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"Awakenings" On Relational Ways Of Knowing: An Ecological Perspective On Curriculum., Elaine Kent Riley Jan 2000

"Awakenings" On Relational Ways Of Knowing: An Ecological Perspective On Curriculum., Elaine Kent Riley

LSU Historical Dissertations and Theses

The human species and all nonhuman forms on the planet, have co-evolved over a 14 billion-year process, yet many people operate as if planetary life existed to support and sustain human well-being alone. Separation, dualism, and power-over ways of knowing fuel a human-centered attitude which exalts our own species above the rest of the natural world. How humans will live with the earth in the next millennium (Hogan, 1996) is one of the most fundamental questions arising at the onset of the year 2000. The planet cannot sustain continued degradation of ecological systems stemming from depletion of natural resources and …

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Slain In The Spirit: A Vodun Aesthetic In Selected Works Of Simone Schwarz -Bart, Zora Neale Hurston, And Paule Marshall., Maria Thecla Smith Jan 2000

Slain In The Spirit: A Vodun Aesthetic In Selected Works Of Simone Schwarz -Bart, Zora Neale Hurston, And Paule Marshall., Maria Thecla Smith

LSU Historical Dissertations and Theses

This study, focusing on select novels by women writers of the African diaspora, discovers a surprising commonality among works with obvious geographical, cultural and linguistic differences---an affirmation of the philosophical essence of the Vodun religion as an antidote to Western spiritual and cultural moribundity. Each of the novels---Zora Neale Hurston's Their Eyes Were Watching God, Simone Schwarz-Bart's Pluie et Vent sur Telumee Miracle, and Paule Marshall's Praisesong for the Widow---alludes to the Vodun pantheon, ancestor veneration and/or rituals in order to valorize the holistic Vodun worldview that recognizes the interconnectedness of all living things and the fluidity of boundaries between …

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Mapping Quantitative Trait Loci Controlling The Early Height Growth Of Longleaf Pine And Slash Pine., Changren Weng Jan 2000

Mapping Quantitative Trait Loci Controlling The Early Height Growth Of Longleaf Pine And Slash Pine., Changren Weng

LSU Historical Dissertations and Theses

The delay in early height growth (EHG) known as the "grass stage" has been one important factor that limits the artificial regeneration of longleaf pine (Pinus palstris Mill.). Genetic improvement of the "grass stage" by interspecific hybridization between longleaf pine and slash pine (Pinus elliottii Engelm) followed by recurrent backcrosses aiming at the introgression of genes controlling the EHG from slash pine into longleaf pine may be a solution. Developing markers tightly linked to these genes and using them in backcross breeding programs may speed the process of the introgression. Random amplified polymorphic DNA (RAPD) markers were employed to map …

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Ecology Of Seagrass Fishes And Macroinvertebrates On Guatemala's Atlantic Coast., Alejandro Arrivillaga Jan 2000

Ecology Of Seagrass Fishes And Macroinvertebrates On Guatemala's Atlantic Coast., Alejandro Arrivillaga

LSU Historical Dissertations and Theses

The ecology of fishes and macroinvertebrates inhabiting shallow seagrass beds was studied at Bahia La Graciosa, located in Amatique Bay in the Caribbean coast of Guatemala. The study area included extensive turtle grass, Thalassia testudinum, meadows over muddy substrate, whereas a more exposed shoreline also supported turtle grass meadows over sandy substrates outside the bay. A total of 166 samples were collected across two seasons and habitat types in three sampling trips to the area with a cylindrical drop sampler. Diversity and abundance of fishes and macroinvertebrates inhabiting seagrass and adjacent bare-sand sites were described to assess the relative importance …

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A Cultural Genealogy Of The Royal Court Theatre: The Renovation Of A Theatre And An Ideal., Stephen Douglas Berwind Jan 2000

A Cultural Genealogy Of The Royal Court Theatre: The Renovation Of A Theatre And An Ideal., Stephen Douglas Berwind

LSU Historical Dissertations and Theses

The Royal Court Theatre's current renovation invites a reexamination of the English Stage Company (ESC). The ESC has entered a crucible of change, raising new questions concerning the Royal Court's architectural semiotics and company's aesthetic mission as London's most acclaimed producer of new plays. This study seeks to understand the ways in which its identity has been shaped and consolidated over the last forty-two years and how the current chapter in ESC history redefines the company's identity and future achievement. The English Stage Company took over the Royal Court in early in 1956. The ESC's marriage with the theatre appears …

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What Goes On In Cross -Language Encounters: The Tactics And Strategies Of Interactional Grammar., Stuart Lee Stewart Jan 2000

What Goes On In Cross -Language Encounters: The Tactics And Strategies Of Interactional Grammar., Stuart Lee Stewart

LSU Historical Dissertations and Theses

This investigation involves analysis of cross-language encounters (CLEs), spoken discourse between native speakers (NSs) and non-native speakers (NNSs) of Spanish involved in two types of interactions: simulated service encounters and free conversation. I use a multi-tiered framework comprised of: (1) Schiffrin's (1994) functionalist approach, (2) a model of interactional grammar adapted from Ochs, Schegloff and Thompson (1996), and (3) one of the principal assumptions from conversation analysis, which focuses on the organization of interaction, while maintaining that participants' behavior provides evidence for the units, patterns and rules that are a part of all spoken interaction. Tactics and strategies examined include …

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The Debiasing Of Judgmental Errors Associated With Anxiety., Bret Gavin Bentz Jan 2000

The Debiasing Of Judgmental Errors Associated With Anxiety., Bret Gavin Bentz

LSU Historical Dissertations and Theses

It was the goal of the current study to investigate one debiasing technique and its ability to reduce judgmental errors. In addition, a rival hypothesis of demand characteristics was examined as a possible explanation of any findings of the reduction of judgmental errors. Participants were randomly assigned to either a control group or a debiasing group and asked to rate the likelihood of several hypothetical events in a 2 x 2 x 2 x 2 (Gender x Anxiety Group x Treatment Group x Repeated Measure) repeated measures experimental design. Level of anxiety responsiveness was measured to arrange subjects into a …

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Host And Parasite Interactions Among Three Symbionts: Pocket Gophers, Chewing Lice, And Endosymbiotic Bacteria., David Lee Reed Jan 2000

Host And Parasite Interactions Among Three Symbionts: Pocket Gophers, Chewing Lice, And Endosymbiotic Bacteria., David Lee Reed

LSU Historical Dissertations and Theses

This study investigates the patterns of cophylogeny documented between pocket gophers (Rodentia: Geomyidae) and their ectoparasitic chewing lice (Phthiraptera: Trichodectidae). The first two chapters investigate the mechanisms that reinforce cospeciation in this system. Chapter one examines whether mammalian hair diameter is a resource tracked by chewing lice, and thus reinforces the patterns of cospeciation. I found that hair diameter of pocket gophers is correlated with gopher body size and the body size of the ectoparasitic chewing lice. Hair diameter also is correlated with size of the rostral groove, which chewing lice use to grasp hair shafts of pocket gophers. In …

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The History Of Our Lady Of The Lake College, 1923--2000: A Study Of Organizational Change., Linda Carol Rakestraw Pendergast Jan 2000

The History Of Our Lady Of The Lake College, 1923--2000: A Study Of Organizational Change., Linda Carol Rakestraw Pendergast

LSU Historical Dissertations and Theses

This qualitative research study investigated the history of Our Lady of the Lake College from 1923 through 2000. It endeavored to determine the influence of the times, the events, the people, and the traditions that have contributed to its development and progress in the seventy-seven years that have passed since it was established. The study also sought to document the important institutional events that transpired during this time period and establish a continuity of the College's progress through the years from a hospital-based diploma program in nursing to a free standing degree granting institution. In addition to the evolutionary development …

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School Life On The Mississippi: An Inquiry Into The Impact Of The Louisiana Reform Movement Related To Standards In World History Instruction In Three Secondary School Settings., Michael Joseph Schramm Jan 2000

School Life On The Mississippi: An Inquiry Into The Impact Of The Louisiana Reform Movement Related To Standards In World History Instruction In Three Secondary School Settings., Michael Joseph Schramm

LSU Historical Dissertations and Theses

The purpose of this study was to explore the impact of standards on the instruction of world history in three secondary school settings. Contact with the Department of Education of the State of Louisiana found that the implementation of standards had only begun in 1997. After a grace period for implementation, the inaugural testing of the accountability system for these standards occurred in the spring of 2000. Therefore, this study became an exploratory investigation into the use of standards as they impact world history instruction. The first research question was designed to assist the researcher in exploring the influence that …

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Electron Paramagnetic Resonance And High Temperature Susceptibility Measurements In Cesium Hexabromide., Cabir Terzioglu Jan 2000

Electron Paramagnetic Resonance And High Temperature Susceptibility Measurements In Cesium Hexabromide., Cabir Terzioglu

LSU Historical Dissertations and Theses

To our knowledge the research reported here represents the first attempt to understand the 4f electronic structure in CeB6 using EPR. We report extensive temperature and angular dependent EPR measurements on a single crystal of CeB6 in the paramagnetic phase from 4 to 300 K at 35, 95, and a few measurements at 220 GHz. The 35 GHz measurements were performed at LSU and the 95 and 220 GHz measurements were performed at the National High Magnetic Field Laboratory, Tallahassee, FL. These experiments were made using a standard microwave frequency-locked spectrometer and magnetic field modulation. The measurements are supplemented by …

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Chemical Vapor Deposition Of Copper Metal Using Copper(Hexafluoroacetylacetonate)(2) Alcohol Adducts., Hui Fan Jan 2000

Chemical Vapor Deposition Of Copper Metal Using Copper(Hexafluoroacetylacetonate)(2) Alcohol Adducts., Hui Fan

LSU Historical Dissertations and Theses

A series of alcohol adducts of Cu(hfac)2 (Cu(hfac)2·ROH, where hfac- = hexafluoroacetylacetonate and ROH = C1, C2, C3, C4 alcohols) were synthesized as precursors for CVD of Cu metal. The low melting points of some Cu(hfac)2·ROH adducts allowed them to be used as liquid precursors at the common precursor evaporation temperature (ca. 80°C). Metallic Cu films were obtained using most of these compounds as precursors under either H2 or N2 mixed with the corresponding alcohol vapor. The details of each CVD reaction were studied by IR analysis of byproducts and electrical and thickness measurements on the resulting films. A reaction …

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A Domesticated Landscape: Native American Plant Cultivation On The Northwest Coast Of North America., Douglas Eugene Deur Jan 2000

A Domesticated Landscape: Native American Plant Cultivation On The Northwest Coast Of North America., Douglas Eugene Deur

LSU Historical Dissertations and Theses

By all accounts, the peoples of the Northwest Coast of North America did not cultivate plants at the time of European contact. This dissertation provides an interdisciplinary assessment of evidence to the contrary, and presents a critique of the literature from which this orthodoxy has been derived. As a primary line of evidence, this thesis describes estuarine gardens found on this coast during the contact period. Northwest Coast peoples created gardens of Pacific silverweed (Potentilla anserina ssp. pacifica), springbank clover (Trifolium wormskjoldii) and other plants with edible, starchy roots within estuarine plots. Ethnographic sources suggest that these gardens were maintained …

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Cross -Age Peers As Partners: Students' Perspectives On The Reciprocal Effects Of Paired Reading Using Cross-Age Peer Tutors., Karen Elizabeth Eason Jan 2000

Cross -Age Peers As Partners: Students' Perspectives On The Reciprocal Effects Of Paired Reading Using Cross-Age Peer Tutors., Karen Elizabeth Eason

LSU Historical Dissertations and Theses

The purpose of this study was to observe students implementing Paired Reading with cross-age peer tutors and to describe the attitudes and perceptions of the tutors about the reciprocal effects of participating in this program. This study examined the following aspects of the fourth grade students' perspectives on the reciprocal effects of cross-age peer tutoring using Paired Reading: (a) the interactions of the fourth grade tutor with the kindergarten tutee during tutoring sessions, (b) the tutor's perception of the effectiveness of her role as a teacher using cross-age peer tutors, and (c) the students' attitudes about and perceptions of themselves …

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Creation And Characterization Of 25 Kda Outer Membrane Protein (Omp25) Deletion Mutants In Brucella Species., Matthew David Edmonds Jan 2000

Creation And Characterization Of 25 Kda Outer Membrane Protein (Omp25) Deletion Mutants In Brucella Species., Matthew David Edmonds

LSU Historical Dissertations and Theses

The genus Brucella is composed of Gram-negative, facultative intracellular pathogens that impact man and animals. Brucella species express a 25 kDa major outer membrane protein termed Omp25. To determine the role of Omp25 in virulence, mutants were created in Brucella abortus (BA25), Brucella melitensis (BM25), and Brucella ovis (BO25) that contain disruptions in the omp25 gene (Deltaomp25 mutants). In the murine brucellosis model, each Deltaomp25 mutant was attenuated when compared to the virulent parental strain. To assess the ability of the B. abortus and B. melitensis mutants to colonize and induce abortions in the ruminant host, cattle and goats in …

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Comparing Interventions On Disruptive Classroom Behaviors Derived From Descriptive Analysis, Experimental Analysis, And Reinforcer Assessment., Heather Peshak George Jan 2000

Comparing Interventions On Disruptive Classroom Behaviors Derived From Descriptive Analysis, Experimental Analysis, And Reinforcer Assessment., Heather Peshak George

LSU Historical Dissertations and Theses

This study investigated whether descriptive analyses, experimental analyses, and reinforcer assessments produced similar patterns of data. Descriptive analyses were conducted to identify baseline levels of disruptive behavior and to systematically describe the co-variation between disruptive behaviors and teacher attention, peer attention, and the academic task. Data on disruptive behavior were analyzed by computing conditional probabilities associated with the preceding and maintaining stimuli (e.g., peer attention). Experimental analyses were conducted to examine the extent to which disruptive behavior was sensitive to the instructional task or to the systematically programmed consequences (e.g., teacher attention). A preference assessment was conducted to identify preferred …

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Studies On The Adsorption Of Di- And Mono-Isocyanides Onto Gold And Plantinum Surfaces., Song Lin Jan 2000

Studies On The Adsorption Of Di- And Mono-Isocyanides Onto Gold And Plantinum Surfaces., Song Lin

LSU Historical Dissertations and Theses

The successful formation and characterization of 1,6-diisocyanohexane (DICH) molecules self assembled onto Au and Pt is realized in this dissertation. Exposure of Au substrates to methanolic solutions of DICH can result in the formation of either a monolayer or polymeric multilayer of DICH. Cyclic voltammograms of solution-phase redox probes at poly(DICH)-coated electrode surfaces (both Au and Pt) exhibit behavior that demonstrates that the poly(DICH) layers are effective transport barriers. Cross-linking of the poly(DICH) films can be increased by treating the poly(DICH) films with aqueous Ni2+ solutions; in addition, the free isocyanide functionalities in the poly(DICH) films can be electrochemically converted …

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Development Of Miniaturized Devices Using X -Ray Microlithography In Poly(Methyl Methacrylate) For Chemical Monitoring And Microfluidic Applications., Christopher Scott Mcwhorter Jan 2000

Development Of Miniaturized Devices Using X -Ray Microlithography In Poly(Methyl Methacrylate) For Chemical Monitoring And Microfluidic Applications., Christopher Scott Mcwhorter

LSU Historical Dissertations and Theses

The research presented in this document is focused on the development and characterization of novel microfluidic devices using X-ray photolithography in poly(methyl methacrylate) (PMMA). A conductivity detector cell was developed and characterized as a sensitive detector for DNA and KCl using flow injection, then was integrated into a high-performance liquid chromatography system for the purification of PCR amplicons. A planar conductivity cell was then developed on a microchip and its detection sensitivity was characterized by pressure pumping KCl through the detector and monitoring the change in conductivity. Also, the topography of the device was characterized using scanning electron and optical …

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Professional Versus Caregiver Ratings Of The Communicative Abilities Of Adults Displaying Moderate To Profound Communication Challenges., Paul Steven Miller Jan 2000

Professional Versus Caregiver Ratings Of The Communicative Abilities Of Adults Displaying Moderate To Profound Communication Challenges., Paul Steven Miller

LSU Historical Dissertations and Theses

Ninety caregivers of 30 adults with moderate-to-serve cognitive, sensory, and physical challenges living in an institutional setting participated in this study to investigate caregiver perceptions of communicative abilities. A mixed effects design was used to compare communication scores of thirty adults. The adults were assigned to three communication proficiency groups. The communicative scores with challenges that were generated with three different assessment activities: a direct/participatory evaluation conducted by a certified speech-language pathologist, an interview of the caregivers, and an observation of daily routine activities. Results indicated that all of the rating procedures differentiated the three communication proficiency groups. Correlations between …

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Evaluating Productivity, Nesting Success, And Conservation Of Thick -Billed Parrots., Tiberio Cesar Monterrubio Rico Jan 2000

Evaluating Productivity, Nesting Success, And Conservation Of Thick -Billed Parrots., Tiberio Cesar Monterrubio Rico

LSU Historical Dissertations and Theses

I studied the breeding activity, productivity and nesting success of the Thick-billed Parrot (Rhynchopsitta pachyrhyncha) during a 3-year period 1997--1999, and also analyzed preliminary data from 1995 and 1996. I studied the Parrots in six nesting areas located in the Sierra Madre Occidental in Mexico. Data were collected on breeding areas characteristics, nest site characteristics, reproductive activity, productivity, and nesting success. Most of the historical breeding range reported in the literature was searched for nests. Two main breeding areas reported in the literature continue to be the major breeding strongholds for the species. Cebadillas and Madera accounted for 56% and …

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Synthesis And Characterization Of Alkoxyaniline-Terminated Monomer Monolayers On Gold Surfaces., Keith Cory Schomburg Jan 2000

Synthesis And Characterization Of Alkoxyaniline-Terminated Monomer Monolayers On Gold Surfaces., Keith Cory Schomburg

LSU Historical Dissertations and Theses

Monolayers of 2-(6-mercaptohexan-1-oxy)aniline (AnC6SH) and 2-(7-mercaptoheptan-1-oxy)aniline (AnC7SH) on Au were synthesized and investigated by reflection-absorption infrared (RAIR) spectroscopy and electrochemistry. Electrochemical oxidation of AnC6SH/Au and AnC7SH/Au in 1 M H2SO4 to form ox-AnC6SH/Au and ox-AnC7SH/Au resulted in voltammetry indicative of oligomerization and degradation reactions of the aniline functionality. Scanning of the voltammetric potential between 0.0 and +0.9 V and then back to 0.0 V vs. SSCE twice leads to four surface-confined redox waves occurring at +0.25, +0.45, +0.5, and +0.6 V vs. SSCE. The oxidized monolayers were found to exhibit voltammetry similar to that observed for poly(o-phenetidine), which exhibits redox …

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Theoretical And Experimental Studies Of Flame -Generated Agglomerates Using Light Scattering., Guocai Shu Jan 2000

Theoretical And Experimental Studies Of Flame -Generated Agglomerates Using Light Scattering., Guocai Shu

LSU Historical Dissertations and Theses

Knowledge of optical properties and morphological characteristics of aggregated aerosols is important for pollution control, material synthesis through the aerosol route, oxidation of particulate matters, as well as understanding the mechanism of particulate formation and growth. However, the limitations of current light scattering theories as well as the lack of robust data inversion schemes render the complete characterization of the agglomerated structures difficult and time consuming. The objective of present work is to develop robust experimental and theoretical methods to characterize the aggregated aerosols from in-situ classical light scattering (CLS) as well as dynamic light scattering (DLS) measurements. In the …

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Insecticide Resistance And Resistance Mechanisms In The Southern House Mosquito, Culex Quinquefasciatus., Jeffrey Dwayne Stancil Jan 2000

Insecticide Resistance And Resistance Mechanisms In The Southern House Mosquito, Culex Quinquefasciatus., Jeffrey Dwayne Stancil

LSU Historical Dissertations and Theses

Significant resistance to malathion and resmethrin was found in insecticide-treated field populations of adult Culex quinquefasciatus , Say, compared with a laboratory and non-treated field strain. Resistance to both insecticides varied during the active control season and was associated with the frequency of insecticide application. Geographic variations in resistance levels were noted, and significant differences occurred between separate populations within the same mosquito control districts. Four model substrates were assessed for their suitability in detecting elevated esterase activity associated with malathion resistance. Esterase activities towards all substrates were significantly higher in field stains than a laboratory strain. Esterase activities toward …

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Comparative Efficacy And Quality Characterizatin Of Mayhaw (Crataegus Opaca) Juice Extraction., Alfred Francois Trappey Ii Jan 2000

Comparative Efficacy And Quality Characterizatin Of Mayhaw (Crataegus Opaca) Juice Extraction., Alfred Francois Trappey Ii

LSU Historical Dissertations and Theses

The comparative efficacy and quality characterization of juice by six extraction methods utilizing either frozen or fresh 'Texas Star' mayhaw (Crataegus opaca Hook. and Arn.) fruit obtained from the 1998 and 1999 crop season were conducted according to temperature (cold-press or hot-press extraction) and fruit pulp pretreatment (whole or pulverized fruit with or without pectolytic enzyme). Extraction methods were steam extraction using whole fruit without added pulp juice (SE); steam extraction using whole fruit with added pulp juice (SEP); cold-press extraction using whole fruit (CPE); cold-press extraction using finely macerated fruit pulp (CPEG); hot-press extraction using finely macerated fruit pulp …

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Consumers' Reasoned Behavior Toward American Alligator Leather Products., Yingjiao Xu Jan 2000

Consumers' Reasoned Behavior Toward American Alligator Leather Products., Yingjiao Xu

LSU Historical Dissertations and Theses

This study determined consumers' perception of and attitude toward American alligator leather products and evaluated factors affecting consumers' purchase intention of the products. The Fishbein and Ajzen (1975, 1980) theory of reasoned behavior served as the theoretical framework for the study. The influence of six variables on purchase intention was measured: attitude toward purchase based on product attributes, subjective norm with respect to purchase, traditional attitude toward fashion products (fashion involvement), personality traits (self-confidence and self-consciousness), price perception (price-quality schema and prestige sensitivity), and demographics. The correlation between consumers' usage of media for fashion information and purchase intention was also …

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Terrebonne Farms, Louisiana: An Anthropogeographic Study Of A New Deal Resettlement., Lisa Kay Adam Jan 2000

Terrebonne Farms, Louisiana: An Anthropogeographic Study Of A New Deal Resettlement., Lisa Kay Adam

LSU Historical Dissertations and Theses

This dissertation examines Terrebonne Farms, a 1940's community in south Louisiana established by the federal government during the New Deal period. Planned by the Resettlement Administration and overseen by the Farm Security Administration, the community was one of approximately one hundred experimental towns or resettlements located around the nation. Although these resettlements varied widely in their organization, appearance, and history, few writers have chosen to focus on individual communities. This study combines recollections of original residents and local accounts of Terrebonne Farms with its government records and photographs to create a detailed and contextual description of a single resettlement. In …

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Litterfall Dynamics And Nutrient Cycling In Mangrove Forests Of Southern Everglades, Florida And Terminos Lagoon, Mexico., Carlos Antonio Coronado Molina Jan 2000

Litterfall Dynamics And Nutrient Cycling In Mangrove Forests Of Southern Everglades, Florida And Terminos Lagoon, Mexico., Carlos Antonio Coronado Molina

LSU Historical Dissertations and Theses

The objective of this dissertation was to investigate the processes that control litterfall and nutrient dynamics in two contrasting mangrove ecosystems at the Southeastern (SE) Everglades and Terminos Lagoon. The main objectives were: (a) to determine the spatial and temporal variability of litterfall dynamics, (b) to evaluate the relative importance of nutrient use efficiency as a nutrient conservation mechanism along a natural nutrient gradient, and (c) to assess the relative importance of nutrient resorption on litterfall dynamics. Two hypotheses were tested: (a) mangrove species living in nutrient-poor environments and in nutrient-rich environments do not differ in the efficiency in using …

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Chiral Recognition Using Polymeric And Monomeric Amino Acid Based Surfactants., Fereshteh Haddadian Billiot Jan 2000

Chiral Recognition Using Polymeric And Monomeric Amino Acid Based Surfactants., Fereshteh Haddadian Billiot

LSU Historical Dissertations and Theses

The research presented in this dissertation involves the comparison and characterization of polymeric and monomeric amino acid based surfactants for the enantiomeric separation of chiral compounds. Comparison of the performance of these two kinds of surfactants in EKC suggest that polymers are better chiral pseudostationary phases (CPSP) than the monomers for enantiomeric separation of neutral and cationic analytes, at least for the examined in this dissertation. However, the anionic enantiomers of 1,1'-binaphthyl-2-2 '-dihydrogen phosphate (BNP) were better separated using monomeric CPSPs. The depth of penetration of binaphthyl derivatives into the micellar core of chiral dipeptide surfactants (CDS) was examined using …

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Influence Of Pyrithiobac And Insecticide Combinations On Cotton Growth And Early Season Pest Control., Richard Whitman Costello Jan 2000

Influence Of Pyrithiobac And Insecticide Combinations On Cotton Growth And Early Season Pest Control., Richard Whitman Costello

LSU Historical Dissertations and Theses

Field studies were conducted at two locations in Northeast Louisiana, to investigate interactions associated with the herbicide pyrithiobac and insecticide combinations in respect to weed control and insecticide efficacy and cotton response. In addition, controlled environment experiments were conducted to evaluate the effect of temperature regimes and simulated thrips damage on pyrithiobac plus insecticide phytotoxicity to cotton. Pyrithiobac and insecticide combinations when compared with pyrithiobac alone did not reduce cotton leaf area, height, main stem node number, main stem nodes to first square, days to first square or flower, main stem nodes above white flower, or seedcotton yield. Acephate insecticide …

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