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Synthetic Peptides: Design, Structure And Biological Function., Lars Gustav Johan Hammarstrom Jan 2001

Synthetic Peptides: Design, Structure And Biological Function., Lars Gustav Johan Hammarstrom

LSU Historical Dissertations and Theses

The synthesis of a series of polyfunctional Calpha,C alpha-disubstituted glycines is described. The lysine-like amino acid analog, Api, was prepared by regioselective hydrolysis of a triBoced hydantoin, followed by Nalpha-protection to yield the first orthogonally protected ionizable Calpha,Calpha-disubstituted amino acid which is alicyclic. The synthesis of three orthogonally protected tetrafunctional amino acids, Bap, Bglu, and Basp was envisioned by alkylation of the organic synthon ethyl nitroacetate. Subsequent regioselective modification should allow for the isolation of the first tetrafunctional amino acid derivatives suitable for solid-phase synthesis. These amino acids are designed to induce peptide secondary structure by salt-bridge stabilization. A series …

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Analysis Of Hydrocarbon Materials By Use Of Nonpolar Matrices In Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (Maldi-Ms)., Stephen Francis Macha Jan 2001

Analysis Of Hydrocarbon Materials By Use Of Nonpolar Matrices In Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (Maldi-Ms)., Stephen Francis Macha

LSU Historical Dissertations and Theses

In this study, polyaromatic hydrocarbon compounds including anthracene, pyrene, acenaphthene and perylene were investigated as nonpolar matrices in matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) for the analysis of selected nonpolar analytes. First, the influence of matrix and the analyte ionization potentials on a charge-transfer ionization mechanism were determined. Results of these studies demonstrated that formation of radical molecular cations in MALDI-MS depends on the ionization energy difference between the matrix and the analyte. Charge-transfer ionization occurs only when the ionization potential of the matrix is higher than that of the analyte. Next, nonpolar matrices were investigated for the analysis of …

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Synthesis Of Phosphonopeptides And Alpha, Alpha-Dialkylated Amino Acid-Rich Peptides., Sheila Denise Rushing Jan 2001

Synthesis Of Phosphonopeptides And Alpha, Alpha-Dialkylated Amino Acid-Rich Peptides., Sheila Denise Rushing

LSU Historical Dissertations and Theses

Peptides and peptide analogs are central to the understanding of biological and biochemical phenomena as well as in the development of new pharmaceutical agents. This research encompasses two classes of peptide mimetics: phosphonopeptides and short, amphipathic peptides rich in alpha,alpha-disubstituted amino acids (alphaalphaAA). The focus of the first part of the peptide analog project was on the preparation of sterically-hindered phosphonamide and thiophosphonamide dipeptides. Conditions were developed, based on our P(III) synthetic approach, for the preparation of the phosphonamide dipeptides, Cbz-CyhGly psi [P (O) (OpNb) NH] Trp-NH2 and Cbz-CyhGly psi [P (O) (OpNb) NH] Trp-OMe, which were previously unattainable by …

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Understanding The Connections Between High-Stakes Test Consequences And School Literacy Experiences., Deborah Karen Setliff Jan 2001

Understanding The Connections Between High-Stakes Test Consequences And School Literacy Experiences., Deborah Karen Setliff

LSU Historical Dissertations and Theses

The purpose of this ethnographic study was to connect the remedial summer school experiences of two fourth-grade students and four fifth-grade students with their school literacy experiences the following year. Understanding the students' experiences and connecting the experiences with school personnel provided a link between the students' and school personnel's perceptions of high-stakes testing consequences. Bridging these perceptions through cross-case analysis revealed the physical, emotional, and philosophical effects high-stakes testing is having on the students, school administrators, classroom teachers, and reading curriculum and instruction at the two elementary schools studied. Integrating the findings at the two schools helped develop a …

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William Albright's Sonata For Alto Saxophone And Piano: Analytical Insights And Performance Considerations., Brian Russell Utley Jan 2001

William Albright's Sonata For Alto Saxophone And Piano: Analytical Insights And Performance Considerations., Brian Russell Utley

LSU Historical Dissertations and Theses

William Albright's Sonata for Alto Saxophone and Piano amply demonstrates the stylistic eclecticism for which he is famous. The four movements exhibit distinct characters and musical languages, including references to compositional practices of the past, as in the two-part invention of the first movement and the follia of the second, and allusions to American popular music, as in the bebop sections of the finale. This polystylistic compositional approach also invites a variety of analytical techniques, including investigation into form, motivic development, register, texture, and pitch usage. This study, the first of its kind on Albright's sonata, examines these characteristics in …

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Performativity And Performance: Representing The Tattooed Body., Mindy Elaine Fenske Jan 2001

Performativity And Performance: Representing The Tattooed Body., Mindy Elaine Fenske

LSU Historical Dissertations and Theses

In this study I examine visual representations of tattooed bodies in three arenas of cultural production: tattoo conventions, advertising, and neo-tribal books. Through the methodological lens of genealogies of performance, I analyze these texts' construction of the tattooed body as classed, gendered, and exotic. I argue that contemporary representations of the tattooed body resist and reproduce discursive power regimes by surrogating prior cultural performances and representations of performance. I argue that contemporary visual representations of the tattooed body succeed in resisting discursive authority when they performatively cite multiple and transgressive authorities. I additionally indicate that the body in representation transgresses …

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Framing And Counterframing Of The Middle East Peace Process In The Arab -Israeli Press: A Comparative Analysis Of "Assafir" And "The Jerusalem Post"., Houda Hanna El-Koussa Jan 2001

Framing And Counterframing Of The Middle East Peace Process In The Arab -Israeli Press: A Comparative Analysis Of "Assafir" And "The Jerusalem Post"., Houda Hanna El-Koussa

LSU Historical Dissertations and Theses

The Arabs and Israelis have been negotiating peace for the past ten years; however, the conflict still ignites with no apparent hope for any near resolution. Understanding the rhetorical construction of the peace reality may help in managing this conflict. This study examines the symbolic construction of the peace process in the Arab and Israeli press. It comparatively studies how the Arab and Israeli press, through language choice, define peace, elucidate its implications, and judge actors and actions involved in the peace process. This study identifies the metaphors used and the dominant rival frames constructed in two conflicting newspapers, Assafir …

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Physicochemical, Functional And Spectroscopic Analysis Of Crawfish Chitin And Chitosan As Affected By Process Modification., Sandeep Kumar Rout Jan 2001

Physicochemical, Functional And Spectroscopic Analysis Of Crawfish Chitin And Chitosan As Affected By Process Modification., Sandeep Kumar Rout

LSU Historical Dissertations and Theses

Traditional isolation of chitin from crawfish shells involves three sequential steps: demineralization (DM, removing calcium carbonate/phosphate), deproteinization (DP), and decolorization (DC, removing mainly astaxanthin). The first two steps can be reversed (i.e., DMP or DPM). Chitin is converted to chitosan by deacetylation (DA). Isolation steps may be shortened, depending on intended applications of chitosan. The first study investigated effects of (1) reversing sequence and (2) eliminating DP and DC steps on physicochemical and functional properties of chitosan and conversion efficiency of chitin. Twelve different processes: DM, DP, DPM, DMP, DPMC, DMPC, DMA, DMCA, DPMA, DMPA, DPMCA, DMPCA were investigated. DA …

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Louisiana Agriculture Winter, 2001, Lsu Agcenter Jan 2001

Louisiana Agriculture Winter, 2001, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

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The Genetics Of Reproductive Isolation And The Potential For Gene Exchange Between Drosophila Pseudoobscura And D. Persimilis Via Backcross Hybrid Males, Mohamed A.F. Noor, Katherine L. Grams, Lisa A. Bertucci, Yvette Almendarez, Jane Reiland, Kelley R. Smith Jan 2001

The Genetics Of Reproductive Isolation And The Potential For Gene Exchange Between Drosophila Pseudoobscura And D. Persimilis Via Backcross Hybrid Males, Mohamed A.F. Noor, Katherine L. Grams, Lisa A. Bertucci, Yvette Almendarez, Jane Reiland, Kelley R. Smith

Faculty Publications

Hybrid male sterility, hybrid inviability, sexual isolation, and a hybrid male courtship dysfunction reproductively isolate Drosophila pseudoobscura and D. persimilis. Previous studies of the genetic bases of these isolating mechanisms have yielded only limited information about how much and what areas of the genome are susceptible to interspecies introgression. We have examined the genetic basis of these barriers to gene exchange in several thousand backcross hybrid male progeny of these species using 14 codominant molecular genetic markers spanning the five chromosomes of these species, focusing particularly on the autosomes. Hybrid male sterility, hybrid inviability, and the hybrid male courtship dysfunction …

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Effect Of Commercial Fat Replacers On The Microstructure Of Low-Fat Cheddar Cheese, Kayanush J. Aryana, Zahur U. Haque Jan 2001

Effect Of Commercial Fat Replacers On The Microstructure Of Low-Fat Cheddar Cheese, Kayanush J. Aryana, Zahur U. Haque

Faculty Publications

This objective of this study was to determine the effect of protein-and carbohydrate-based fat replacers on the microstructure of low-fat Cheddar cheese. Microstructure was studied by transmission and scanning electron microscopy. Protein-based fat replacers were Dairy LoTM (DL) and SimplesseTM (SIMP), while the carbohydrate-based fat replacers were NovagelTM (NOV) and StellarTM (STEL). Low-fat Cheddar cheese was manufactured using these commercial fat replacers and aged for 6 months at 5 °C. Low-fat control (LFC) and low-fat Cheddar cheese made with SIMP and DL showed a rippled surface microstructure while incorporation of NOV and STEL resulted in cheese with an undulated and …

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Lsu General Catalog 2001-2002, Louisiana State University And Agricultural And Mechanical College Jan 2001

Lsu General Catalog 2001-2002, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Front Matter Jan 2001

Front Matter

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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Raped By The System An Account Of Clarissa In The Light Of Eighteenth-Century Law, Beth Swan Jan 2001

Raped By The System An Account Of Clarissa In The Light Of Eighteenth-Century Law, Beth Swan

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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Book Reviews Jan 2001

Book Reviews

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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Effects Of The High -Probability Sequence With And Without Extinction In Children With Feeding Disorders., Jennifer Eileen Dawson Jan 2001

Effects Of The High -Probability Sequence With And Without Extinction In Children With Feeding Disorders., Jennifer Eileen Dawson

LSU Historical Dissertations and Theses

The effects of the high-probability instructional sequence, with and without extinction, on increasing compliance to eat in three children with severe food refusal and selectivity were evaluated. Pediatric feeding disorders, in which children refuse most or all food and drink, are a rare and life threatening problem that requires intensive treatment. The majority of behavioral techniques used with feeding disordered children manipulate the consequence of food refusal. The use of antecedent procedures in the treatment of food refusal has been limited. One antecedent technique, the high-probability instructional sequence, involves first presenting the individual with a series of instructions that he/she …

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Survival Of Canine Epididymal Sperm Under Cooled And Frozen-Thawed Conditions, Karla Stilley Jan 2001

Survival Of Canine Epididymal Sperm Under Cooled And Frozen-Thawed Conditions, Karla Stilley

LSU Master's Theses

The objective of the first experiment was to determine the effects of storage at 22„aC vs. 4„aC on the motility and percentage of membrane-intact sperm (%MIS) of epididymal mouse sperm. Testicles were allocated into 22„aC or 4„aC treatment groups and stored for 24 or 48 hours. Additional testicles were allocated into the 4„aC treatment for storage for 72 or 96 hours. Sperm was collected and analyzed at each time point. Storage at 22„aC lowered motility and %MIS (P<0.05) when compared with control sperm and 4„aC sperm at both the 24 and 48 hours. Motility and %MIS of 4„aC sperm did not decrease when compared with the control until after 72 hours of storage. The second experiment evaluated the effects of 22„aC vs. 4„aC storage for 24 and 48 hours on epididymal dog sperm. Motility and %MIS of the 22„aC sperm was lower than that of the 4„aC sperm and the control (P<0.05) at 24 and 48 hours. Motility of the 4„aC sperm was lower than the control at 24 and 48 hours (P<0.05), however %MIS was not lower than the control until 48 hours. The third experiment tested the effect of cryopreservation on epididymal dog sperm. Sperm was frozen immediately (A), after 48 hours at 4„aC in liquid (B) or after 48 hours at 4„aC of the whole testicle (C). Both pre-freeze (PF) and post-thaw (PT) motility and %MIS of B and C were lower than A (P<0.05). PT values were lower than PF values in all treatments (P<0.05). PT motility of B was lower than C (0 vs. 35.0¡Ó3.6%). Storage at 4„aC allows collection of motile epididymal mouse and dog sperm for several days after death. Dog testicles can be refrigerated for 2 days and epididymal sperm frozen with PT motility and %MIS of 35 and 62%.

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Polyurethane Foam Based Packing Media For Biofilters Removing Volatile Organic Compounds From Contaminated Air, Felipe A. Martinez Jan 2001

Polyurethane Foam Based Packing Media For Biofilters Removing Volatile Organic Compounds From Contaminated Air, Felipe A. Martinez

LSU Master's Theses

In recent years, biofiltration technology has gained acceptance worldwide as an economical and reliable air pollution control technology for treating gases contaminated by low concentrations of biodegradable volatile organic compounds (VOCs). Important applications include control of odors generated by wastewater treatment plants and control of VOC emissions from industrial sources. Although there have been many successful applications, several operational problems have been reported in the literature. These include difficulty in control over bed moisture content, high head loss caused by excessive biomass production, and inability to maintain removal efficiency during transient periods of high concentration loading. Use of a superior …

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Synthesis And Analysis Of Three-Dimensional Molecular Architectures, Patricia Beck Jan 2001

Synthesis And Analysis Of Three-Dimensional Molecular Architectures, Patricia Beck

LSU Master's Theses

The use of resorcinarenes in the study of biologically significant phenomena has been the focus of much attention, due to the versatility of these macrocyclic compounds. In this thesis, two applications of resorcinarenes are explored. First, the search for the mechanism by which tetraarylboronic acid resorcinarenes lead to colorimetric detection and quantization of saccharide analyte concentration in solution is described. Second, the extension of the lower rim conjugation of the resorcinarene macrocycle by the fourfold addition of various length oligo(p-phenylene) rods is discussed. The synthesis of these tubular materials, with potential uses as artificial ion channels and for binding and …

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The Effect Of Diet/Supplement Intake And Competitive Swimming/Gymnastics Upon The Bone Mineral Density Of Collegiate Females, Teresa Christine Jones Jan 2001

The Effect Of Diet/Supplement Intake And Competitive Swimming/Gymnastics Upon The Bone Mineral Density Of Collegiate Females, Teresa Christine Jones

LSU Master's Theses

The purpose of this pilot study was to determine if there was a relationship between dietary/supplemental intake and competitive activity (swimming and gymnastics), on the bone mineral density of 18-21 year old females. Five swimmers, 4 gymnasts, and 12 control subjects were recruited from the university student body. All subjects completed a 3-day diet/supplement record, 3-day activity record, past calcium intake form, and a medical history form. Bone mineral density (BMD) was measured for the whole body, L1-L4, the proximal femur and body composition by DEXA. Results indicated the control subjects reported a significantly greater percent of the RDA for …

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When Everybody's A Critic: Effects Of A Newspaper's Self-Improvement Program, John M. Laplante Jan 2001

When Everybody's A Critic: Effects Of A Newspaper's Self-Improvement Program, John M. Laplante

LSU Master's Theses

This case study examined a peer-evaluation program at The Advocate newspaper in Baton Rouge, Louisiana, in which employees took turns serving on committees that critiqued each day’s coverage. Their critique reports, containing both negative and positive comments on all elements of the news pages, were distributed to each employee of the news department. The purpose of the study was to examine the content of the critique reports and to determine whether the participants and the editors thought the program improved the newspaper, whether they wanted to continue it and what changes might improve it. The research methods included a survey …

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Trade Flows And Marketing Practices Of Louisiana And Gulf States Nurseries, Wade R. Hampton Jan 2001

Trade Flows And Marketing Practices Of Louisiana And Gulf States Nurseries, Wade R. Hampton

LSU Master's Theses

The markets facing nursery producers have changed dramatically in the past decade. These changes in nursery markets have outdated previous research. New research into nursery marketing will assist nursery producers in making marketing decisions. Nursery producers can market their plants to five different marketing channels: Mass-merchandisers, garden centers, other retailers, landscapers and re-wholesalers. This study described the 1998 Louisiana nursery industry, analyzed nursery market changes over the past decade in Louisiana and the Southeast and analyzed characteristics of Louisiana and Southeastern nurseries to estimate marketing channel choice. Data was collected via mail using the third Trade Flows and Marketing Practices …

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A Reexamination Of The Canon Of Objectivity In American Journalism, Les L. Lane Jan 2001

A Reexamination Of The Canon Of Objectivity In American Journalism, Les L. Lane

LSU Master's Theses

Journalistic objectivity is the definitive canon of American mainstream journalism. Yet American journalists cannot agree on what it is, how it is measured, or on how it is done. The source of the confusion is the assumption that objectivity is an ideal, absolute, impossible, incomprehensible, value-free state of being, outside of all physical, cognitive, psychological, and social contexts, where reality is perceived without distortions of any kind. This assumption is logically invalid and historically inaccurate. Journalistic objectivity evolved from the American cultural premises of egalitarianism and positive scientific empiricism through four historical stages: Nonpartisanship, Neutrality, Focus-On-Facts, and Detachment. It is …

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Evaluation Of In Situ Bioremediation Approaches In Meeting International Standards For Organic And Residual Metals Toxicity In Soils, Jason Allan Mcdonald Jan 2001

Evaluation Of In Situ Bioremediation Approaches In Meeting International Standards For Organic And Residual Metals Toxicity In Soils, Jason Allan Mcdonald

LSU Master's Theses

Drilling fluids and muds are an essential component of the rotary drilling process used to drill for oil and gas on land and in offshore environments. However, the bioaccumulation of petroleum contaminated soils/drilling mud due to oil and natural gas exploration has posed a major environmental concern due to its prolonged environmental persistence and its leachability below the rhizosphere. The main objectives of this research were: (i) To assess initial toxicity of drilling mud and related contaminated soils from an agricultural setting in Galliano, Sicily (Phase one) and (ii) To develop a low intervention bioremediation approach using bioplug technology to …

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A Textual Analysis Comparing The Content Of "Black Enterprise," "Forbes," And "Fortune" Magazines And The Message Each Presents To Its Readers, Karen M. Rowley Jan 2001

A Textual Analysis Comparing The Content Of "Black Enterprise," "Forbes," And "Fortune" Magazines And The Message Each Presents To Its Readers, Karen M. Rowley

LSU Master's Theses

A study of Forbes, Fortune, and Black Enterprise magazines finds that the two mainstream business publications—Forbes and Fortune—provide virtually no coverage of Blacks and the black business community, thereby helping to perpetuate the white-dominated view of society that places minorities in general—and Blacks in particular—outside the norm. Black Enterprise, on the other hand, continues in the long tradition of the black press, providing an alternative view of society through its focus on the black business community.

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The Effectiveness Of Sports Sponsorhips: A Study Of The New Orleans Zephyrs, Amy Marie Boyle Jan 2001

The Effectiveness Of Sports Sponsorhips: A Study Of The New Orleans Zephyrs, Amy Marie Boyle

LSU Master's Theses

Despite the pervasiveness of sports in American society and the ever-increasing role of sponsorship in the marketing mix, sponsorship marketing as a discipline currently lacks the rigorous academic study and theoretical foundations that exist in other marketing disciplines. The purpose of this study is to determine whether or not sponsorship of New Orleans Zephyrs baseball is an effective way of increasing awareness of a product or brand. Using intermediate measures of recognition testing, fans at three New Orleans Zephyrs games were surveyed to test sponsor recognition. The study examined various elements of sponsorship marketing including the effects that gender, age, …

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Optimization Of Apex-Mediated Dna Transformation In Rice, Marsha Natalie Samuels Jan 2001

Optimization Of Apex-Mediated Dna Transformation In Rice, Marsha Natalie Samuels

LSU Master's Theses

Genetic transformation using the rice shoot apical meristem, derived from germinating seedlings, was established in this study for commercial varieties of Oryza sativa. To optimize apex-mediated DNA transformation in rice several parameters were tested to improve the efficiency and reliability of isolation of the shoot apices and regeneration of vegetative shoot apices. Results from these experiments indicated that certain factors were important in increasing the frequency of survival rate of the apex, co-cultivation and co-transformation. These factors included: the starting size of the apex had to range between 1.0 mm and 1.2 mm for maximum survival of the apex, concentration …

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The Evaluation Of Pcr-Based Techniques For The Detection Of Fecal Indicator Organisms In Environmental Samples, Quinesha Laticia Perry Jan 2001

The Evaluation Of Pcr-Based Techniques For The Detection Of Fecal Indicator Organisms In Environmental Samples, Quinesha Laticia Perry

LSU Master's Theses

Escherichia coli is the indicator organism of choice for the detection of fecal contamination. Standard methods for detecting fecal contamination often rely on detecting fecal coliforms. While this practice if highly efficient in most applications, when used with the sediment-laden waters of Louisiana, free-living soil bacteria, such as Klebsiella pneumoniae were shown to inflate the fecal coliform counts. An accurate assessment of the contamination problem requires methods that detect E. coli. To detect E. coli, several of species-specific genes were tested before the gadAB genes were selected. The polymerase chain reaction (PCR) was chosen to detect these genes using a …

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Attribute Agenda-Setting In An Open Primary: An Examination Of Press Coverage And Political Ad Effects, Scott Hobbs Jan 2001

Attribute Agenda-Setting In An Open Primary: An Examination Of Press Coverage And Political Ad Effects, Scott Hobbs

LSU Master's Theses

Creating a favorable candidate image is one of the more difficult tasks a political consultant faces. Besides researching which issues their client will address, the consultant must analyze what attributes voters find most appealing in a candidate. Then, through a complex process, a candidate image is finally packaged and presented to the public. This thesis looks at the end result of the packaging process for a Mayoral candidate in East Baton Rouge parish. By examining the press coverage and campaign ads in a local election in a mid-size city, this study expands on previous second level agenda-setting research. Literature in …

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The Time-Course Of Vascular Adaptations Following Localized Short Term Exercise Training, Jason David Allen Jan 2001

The Time-Course Of Vascular Adaptations Following Localized Short Term Exercise Training, Jason David Allen

LSU Doctoral Dissertations

This is a series of 3 experiments in the area of vasoreactivity. The first study investigated the stability and reproducibility of brachial artery flow-mediated dilation (BAFMD). Twenty-six healthy volunteers underwent 3 scans on 2 days, performed by 2 ultrasonographers, and analyzed by 2 readers. All subjects were tested between 7 and 11am after refraining from food and exercise. Average baseline diameter was 3.48±0.53mm, which increased to 3.71±0.57mm (6.58±4.15%) at peak dilation. ICCC's for days, testers and readers were 0.9188, 0.9394, and 0.8982 respectively. To detect a difference in vasoreactivity of 60% (two-tailed), e.g. 5% vasodilation versus 8% vasodilation, at 90% …

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