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Aquaculture And Pollutants Under The Clean Water Act: A Case For Regulation, Sean M. Helle

Publications

No abstract provided.

Linkage Of Arcview Gis With The Rzwqm

Journal of Spatial Hydrology

The Root Zone Water Quality Model (RZWQM) is a one-dimensional, lumped field-scale model. It can simulate major physical, chemical, and biological processes in an agricultural crop production system. While its reliability has been verified by several researchers, because of its lumped structure RZWQM could not account for the soil heterogeneity and the associated nonuniformity of management practices across the field. Neglecting the variability may result in misleading simulation results. On the other hand, the variability can be accurately characterized by using a geographic information system (GIS), especially ArcView GIS, the most widely used desktop mapping and geographic analysis system. Linked …

Étude Des Facteurs Environnementaux Et Physiologiques Contribuant À La Variabilité Biologique : Caractérisation De La Relation « Exposition - Indicateur Biologique D'Exposition » Pour Le N-Hexane, Geneviève Hamelin, Robert Tardif, Ginette Truchon

Rapports de recherche scientifique

Jusqu'à tout récemment, l'American Conference of Governmental Industrial Hygienists (ACGIH) recommandait d'utiliser la mesure de la 2,5-hexanedione (2,5-HD) totale (2,5-HD libre + autres conjugués glucuronides) comme indicateur biologique de l'exposition (IBE) au n-hexane (n-HEX). En 2001, l’ACGIH a cependant proposé de recourir plutôt à la mesure de la 2,5-HD libre uniquement et la valeur du nouvel indicateur serait de 3.5 µmol/L. Le choix de cette mesure se justifie puisque la 2,5-HD libre est le métabolite responsable des effets neurotoxiques associés à l'exposition au n-HEX. De plus, la mesure de la 2,5-HD libre permet une meilleure discrimination entre individus exposés et …

Impacts D'Un Abaissement De La Valeur D'Exposition Admissible Au Formaldéhyde. Groupe 3 : Autres Secteurs, Nicole Goyer, Charles Beaudry, Denis Bégin, Michèle Bouchard, Gaétan Carrier, Olivia Gely, Michel Gérin, Pierre Lefebvre, Nolwenn Noisel, Guy Perrault

Rapports de recherche scientifique

Ce document est une annexe du rapport Impacts d'un abaissement de la valeur d'exposition admissible au formaldéhyde (R-386)

This document is an annex to the report Impacts d'un abaissement de la valeur d'exposition admissible au formaldéhyde (R-386)

African American Mothers & Daughters: Socialization, Distance, & Conflict, Kaavonia Hinton

Teaching & Learning Faculty Publications

The black women's literary tradition began in a conscious effort to create a space for black women's writing and to illustrate a distinction between black women's reality and the realities of others (Christian 348–359). The literature within the tradition is influenced by how black women perceive themselves and the world around them. As a result, identity is an important part of African-American women's literature (Hooper 74–81). Race, class, gender, and sexuality are all components of one's identity and are critical in the formation of one's lived experiences (Crenshaw 357–383). Family, from its structure to the function of specific members within …

Intergenerational Preferences Regarding Punishment Of Criminal Offenders, Allison Deutsch, Molly Movall, Christine Van Berkum

Presidential Scholars Theses (1990 – 2006)

The purpose of this study is to examine intergenerational differences regarding corporal punishment of criminal offenders, particularly preferential differences that occur between members of the Baby Boom and Echo-Baby Boom generations. This research is of interest due to America 's changing culture. The children of Baby Roomers see fewer acts and practices as sinful and morally wrong than do their parents, and our research examines if similar changes occurred in the criminal justice system in response to how offenders should be punished. No studies currently exist which examine this issue, and this research will create awareness in the discipline of …

Our Toxics Regulatory System And Why Risk Assessment Does Not Work: Endocrine Disrupting Chemicals As A Case In Point, Valerie J. Watnick

Utah Law Review

Our current toxics regulatory system is based on the fundamental premise that the public expects a high degree of safety-close to absolute safety 2-in the regulation of toxins in our environment. To implement a system based on this fundamental assumption, we assume further that we can use risk assessment to develop "health-based" safety standards and use command and control regulation to implement them. This Article suggests that the fundamental premise that we can and should develop and apply standards that ensure safety to human health in our toxics regulatory schemes has little basis in current political and scientific reality. Politically, …

Soils Of Regeneration: Exploring Conceptualizations Of The Natural World As A Context For An Ecologically-Sensitive Curriculum, Emily A. Demoor

LSU Doctoral Dissertations

David Orr (1994) asserts that the ecological crisis is a crisis of education. This study explores the relationship between the ecological crisis and education by examining the role that language plays in shaping perceptions of the natural world. Toward this end it analyzes narratives of science, literature and other disciplines that conceptualize the natural world as object and as subject. It evaluates how particular metaphors used in reference to the natural world enhance or impede ecological understanding and the cultivation of responsibility and stewardship and considers ways in which these conceptualizations might be used as a basis for new curriculum …

Activity-Based Anorexia: The Effects Of Resistant Starch, Holly M. Nguyen

LSU Master's Theses

Anorexia nervosa is the third most common illness among adolescent females. Approximately one half the cases of anorexia nervosa have been suggested to be activity-induced. Various animal studies have been used to study human anorexia, particularly the activity-based anorexia model (ABA). The ABA paradigm consists of diet restriction and liberal access to activity, which ultimately results in a rapid decrease in both body weight and food intake paradoxical to the significant increase in activity. Because resistant starch (RS) has been shown to initiate a lower rise and a steady level of post-prandial blood glucose, it was hypothesized that a diet …

Line Drive: L1 Element Orthologous Loci, Huei Jin Ho

LSU Master's Theses

The L1Hs preTa subfamily is one of the youngest L1 families. It originated after the divergence of human and chimpanzee about 2.34 mya, and therefore is only found in the human genome. Some elements were inserted so recently that they are not fixed in the population. Thirty three of the 254 L1Hs preTa elements are polymorphic for the absence/presence of the insertion, making them useful markers for studying phylogenetics and human population genetics. However, the problem of homoplasy can diminish the value of using L1 elements as phylogenetic and population genetic markers. Examination of the L1Hs preTa orthologous insertion sites …

Synthesis And Antibacterial Assessment Of Water-Soluble Hydrophobic Chitosan Derivatives Bearing Quaternary Ammonium Functionality, Mrunal R. Thatte

LSU Doctoral Dissertations

Chitosan is a naturally occurring, bio-degradable, non-toxic, non-allergenic bio-polysaccharide derived from chitin, found in abundance in nature. Studies aimed at deriving newer applications of chitosan are hence of interest. Among these, one of the focuses of investigations is aimed at excellent antimicrobial activity demonstrated by chitosan. In this context, certain quaternary ammonium derivatives of chitosan have been shown in the past to be highly effective antibacterial materials. In the present study, substituted chitosan derivatives were synthesized and further quaternized using Quat-188 to produce water soluble derivatives at neutral pH. The antibacterial assessments of the quaternized derivatives of substituted chitosan were …

The Impact Of Brief Intervention On Adherence To Medication Regimen Of Low-Income Adults With Type 2 Diabetes, Kathleen E. Kendra

LSU Master's Theses

Patient nonadherence with medication regimen is a common problem facing health care providers treating adult patients with Type 2 diabetes. Poor glycemic control, diabetes related complications, and increased utilization and health care costs are among the outcomes of poor compliance with medical regimen. Prior research indicates moderate success with several techniques to improve medication adherence when used alone. However, the literature suggests a need for an intervention providing a multi-component technique, implementing self-motivating skills and follow-up prompts. Using a 15- minute single exposure intervention, the current study attempted to combine these two procedures (brief intervention including motivational interviewing with follow-up …

Tissue Interactions With Lasers And Liquid Nitrogen: A Novel Cryopreservation Method, Deepak Kandra

LSU Master's Theses

The importance of the imposed cooling rate in cryopreserving native cells and tissues has been long recognized in the field of cryobiology. When biological tissues are subjected to cooling rates in excess of thousands of degree C per minute, the characteristic structural and physical manifestations of the ice formed are such that the traditional damage due to ice formation at lower cooling rates are suppressed. Hence, achieving high cooling rates in tissues and cells of biologically relevant sizes (mm’s and cm’s) has been a long standing research problem. In the present study, we present a novel technique to achieve high …

What Do Tin-Enameled Ceramics Tell Us?: Explorations Of Socio-Economic Status Through The Archaeological Record In Eighteenth-Century Louisiana: 1700-1790, Jason A. Emery

LSU Master's Theses

This thesis examines the presence and distribution of tin-enameled earthenwares in what was colonial Louisiana at nine archaeological sites: Madame John's Legacy (16OR51), the ca. 1730s French Colonial Barracks (16OR136), the Lower Pontalba Building (16OR209), Galveztown (16AN39), French Site I (16PC80), the Bicentennial Gardens (22AD999), Los Adaes (16NA16), the American Cemetery (16NA67), and the Chamard House site (16NA100). To examine the ceramic diversity, a comprehensive classificatory system is proposed, with discussion and classification of vessel forms. Ceramic diversity was anticipated to be patterned following geographic and economic lines; however, this was not substantiated through the analysis of the general body …

Color, Texture And Rehydration Characteristics Of Ohmically Treated Sweet Potatoes, Sireesha Bhattiprolu

LSU Master's Theses

Ohmic heating has been shown to affect the drying rate and texture of foods. This research was designed to determine the effect of ohmic heating on rehydration, color and texture properties of sweet potatoes. Three combinations: 60Hz, 40V, 60Hz, 60V and 1Hz, 40V were applied to ohmically heat sweet potato cubes. The ohmic treated cubes and untreated cubes or controls were stored for six days in four different %relative humidities of 11.15%, 32.73%, 57.70% and 75.32%. Results showed that there was no significant difference in the rehydration properties of ohmic treated samples and control samples. The % moisture gain varied …

Paranthropus Paleobiology, Paul J. Constantino, Bernard A. Wood

Biological Sciences Faculty Research

No abstract provided.

Zoological Nomenclature And Kinbote’S Name Of God, Victor Fet

Biological Sciences Faculty Research

In Nabokov’s Pale Fire, Kinbote explains that the Name of God holds priority over Nature, etc. I show that the ‘priority principle’ here can be interpreted in the strict terms of zoological nomenclature.

Isolation Of Marine Metabolites From Symbiodinium Species Of Dinoflagellates, Katherine Evelyn Drainville-Higgins

Open Access Dissertations

The initial scope of this project was to determine if the symbiotic dinoflagellate, Symbiodinium sp., produces palytoxin, the highly lethal and complex compound originally found in the zoanthid, Palythoa spp. Through the examination of cell extracts made, this compound was not found. Instead, other secondary metabolites were isolated and their structures elucidated. The following is a summary of accomplishments. (1) The conditions to grow several strains of Symbiodinium organisms were investigated for the necessary extensive culturing required for cellular extraction. As a result, an isolate from Palythoa sp. obtained in Puerto Rico was successfully cultured. Previously, sustaining cultures of Palythoa …

Quality Assurance Testing Of The Eclox-M In Detecting Terrorism Threats In Louisiana's Public Drinking Water Systems, Jessica Coleman

LSU Master's Theses

A quality assurance testing of the ECLOX-M™, a rapid water quality indicator used in potential terrorist attacks, was evaluated for its adequacy in nine regional Louisiana water systems. The ECLOX-M™ system uses enhanced chemiluminescence to measure toxicity in water by integration of a mixture of luminol (C₈H₇O₃N₃), and an oxidant in the presence of a catalyst enzyme - horseradish peroxidase (HRP). Water samples were tested for chemiluminescence, chlorine content, pH, and arsenic and/or nerve agent/pesticide contamination. In addition, three toxic industrial chemical standards were evaluated (mercury, a volatile liquid mixture, and a …

The Use Of Altrenogest To Control Reproductive Function In Beef Cattle, Clarence Edward Ferguson

LSU Doctoral Dissertations

There has been great controversy involving progesterone (P₄) levels during early pregnancy in cattle. The objectives of these experiments were to determine the effect of an early low dose administration of P₄ or altrenogest (ALT) on pregnancy rates in repeat breeder (RPB) females, if an increase in pregnancy rates could result from a direct effect of P₄ on the embryo and if ALT could support pregnancy in the absence of a functional CL. Firstly, ALT was evaluated for use as a progestin in cattle by synchronizing estrus in beef heifers. There were no differences in the …

Synthesis, Characterization And Study Of Novel Reagents For The Detection Of Saccharides And Amino Acids, Nadia Nadette St. Luce

LSU Doctoral Dissertations

The design of synthetic receptors for the recognition and sensing of saccharides and amino acids is currently a major challenge. This is due to inherent structural similarity and a lack of chromophoric or fluorophoric properties of these compounds. The synthesis and study of novel detection agents for bioactive molecules as well as mechanistic studies are presented herein. The elucidation of the mechanism by which tetraarylboronic acid resorcinarene interact with sugar molecules and promote a solution color change is explored. This vast collaborative study, reveals that DMSO solutions of boronic acid functionalized resorcinarene macrocycles afford visual color changes upon heating or …

Photo-Control Of Dna Oligonucleotides With Cage Compounds, Bilal Ghosn

LSU Master's Theses

Many biochemical processes in which DNA and other nucleic acids participate are central to functions in both living cells and in molecular biology assays. While many compounds have been used to regulate the activity of DNA, these strategies are limited to the aqueous-based diffusion of the activator to the target DNA molecule. An improvement to the induction of DNA bioactivity is to move to a light-based modulation. This research demonstrates a light-based technique using a photo-cleavable cage compound to transiently inactivate DNA hybridization. Function can be restored with exposure to near-UV light, allowing for temporal control of DNA oligonucleotide (ODN) …

An Evaluation Of Reference Evapotranspiration Models In Louisiana, Royce Landon Fontenot

LSU Master's Theses

Daily and monthly output from seven evapotranspiration models (FAO-24 Radiation, FAO-24 Blaney-Criddle, Hargreaves-Samani, Priestly-Taylor, Makkink, and Turc) have been tested against reference evapotranspiration data computed by the FAO-56 Penman-Monteith model to assess the accuracy of each model in estimating grass-reference evapotranspiration in Louisiana. Models were compared at eight stations of the Louisiana Agriclimate Information System using data from December 2002 to November 2003. Comparisons were also made using three composite regions: statewide, inland, and coastal. A pan evaporation to reference evapotranspiration model (FAO-24 Pan Evaporation) was also tested against daily grass reference evapotranspiration from the FAO-56 Penman-Monteith model using data …

Spectroscopic Investigation Of Nitrogenase: Epr And Mcd Studies Of The Femo Cofactor And The P-Cluster, Robyn B. Broach

LSU Doctoral Dissertations

Little is known about substrate binding and reduction of nitrogenase. EPR spectroscopy is used here to observe intermediate states generated by different substrates. Two different spin states (S=3/2 and S=1/2) were exhibited for each substrate, which may result from different binding of the substrate to the cofactor (side-on or terminal binding) or the difference of the substrate binding to either Fe or Mo of the cofactor. Parallel studies were performed on a variant MoFe protein, alpha-195^Gln, which exhibited different signals from the wild-type suggesting that the substituted amino acid maybe necessary to reach some mechanistic states that the …

The Contributions Of Floyd Leslie Sandle To Black Educational Theatre In Louisiana, Ava Marie Brewster-Turner

LSU Doctoral Dissertations

Floyd Leslie Sandle appeared on the theatrical scene in 1938 on the campus of Grambling State University. From his humble beginnings in the segregated town of Magnolia, Mississippi, to Dillard University where his passion for theatre was nurtured by Dr. Sheppard Randolph Edmonds, Sandle made significant strides in the dvelopment of Black Educational Theatre in Louisiana. Through his unique approach of presenting plays to the residents of the rural community of Grambling, Louisiana, Sandle was able to establish a state certified Speech and Drama Department at Grambling State University. He trained students in educational theatre though his lectures, laboratory experiences, …

Chromosomal Localization Of A Proinsulin Transgene Inserted With A Transposon-Based Vector Into Japanese Quail, Coturnix Coturnix, Lacey R. Mcnally

LSU Doctoral Dissertations

The overall goals of this research were to develop a reproducible method of detecting stable DNA insertion into Japanese quail and provide a method for gene location on avian chromosomes. This research resulted in the development of a different method of obtaining chromosome spreads in Japanese quail, the establishment of primed in situ hybridization as a method for the chromosomal gene detection in birds, development of Teflon-coated coverslip slides to facilitate laser microdissection of 0.5 ƒÝm samples, and chromosomal identification of proinsulin transgene insertions by laser microdissection and nucleotide sequence from G2 Japanese quail. The 28S rDNA was found on …

Analysis And Evaluation Of A Bioengineered Submerged Breakwater, Matthew Dwain Campbell

LSU Master's Theses

Louisiana's coastline has received national attention due to rapid erosion rates estimated from approximately 60 to 100 square kilometers per year. The disappearance of coastal areas jeopardizes public and private infrastructure, property values, aquatic ecosystems, and standards of living. In order to resolve the erosion problem, innovative solutions have been explored that may improve effectiveness and cost efficiency. This research involves a technology, termed an "oysterbreak," which is a bioengineered submerged breakwater. This structure promotes oysters to form a dense structure that dissipates wave energy. Since the structure is biologically dominated, initial material use is modest. The oysterbreak was evaluated …

Site-Directed Mutagenesis Studies Of E. Coli Biotin Carboxylase, Valerie Melissa Sloane

LSU Doctoral Dissertations

Acetyl-CoA carboxylase is an essential enzyme in all plants, animals, and bacterie, where it catalyzes the committed step in fatty acid synthesis. The Escherichia coli version of the enzyme has three functional components that dissociate readily: biotin carboxylase, carboxyltransferase, and a biotin carboxyl carrier protein. The biotin carboxylase component catalyzes the ATP-dependent carboxylation of biotin, using bicarbonate as the carboxylate source. Biotin carboxylase is a member of a functionally diverse superfamily of proteins known as the ATP-grasp enzymes. In the first study, four residues of biotin carboxylase, Lys 116, Lys 159, His 209, and Glu 276, were selected for site-directed …

Biological Treatment Of Industrial Wastewater Containing High Concentrations Of Linear Alkylbenzene Sulfonate (Las), Luis Alberto Espinoza

LSU Master's Theses

Lauryl Alkylbenzene Sulfonate (LAS) is the major anionic surfactant used worldwide in detergent and household cleaning product formulations. Its biodegradation and removal has been extensively studied in wastewater treatment facilities and laboratory-scale tests at low concentrations (<10 mg/L) typical of those encountered in municipal wastewater treatment plants. Less effort, however, has been expended investigating degradation of higher concentrations of LAS representative of those expected in wastewater generated at LAS manufacturing operations. The research described in this thesis was conducted to study biological processes for treating wastewaters containing high concentrations (e.g., 400 mg/L) of LAS. Initial experiments were carried out using a respirometry technique, and subsequently, three different laboratory-scale bioreactor systems. The three systems studied were a Sequencing Batch Reactor (SBR), a Sequencing Batch Biofilm Reactor (SBBR), and an Intermittent Cycle Extension Aeration System (ICEAS). The SBR and ICEAS were operated on a five-day cycle basis with a hydraulic retention time of four days. The SBBR was operated mainly in a two-day cycle having a hydraulic retention time of ten days as well, and polyurethane foam cubes were used as a support medium for attached biomass growth. The three systems were compared on their ability to remove LAS measured in terms of total organic carbon (TOC) and methylene blue active substances (MBAS). The reactors were also compared on the basis of foam production. The ICEAS showed the best performance in terms of controllable foam production while exhibiting a capacity for effectively dealing with transient periods of elevated loading. When a short Fill period was used, the SBR and SBBR had the disadvantage of producing excessive foaming, and an intermittent aeration strategy was required avoid overflow.

Students' Construction Of The Body In Physical Education, Laura Azzarito

LSU Doctoral Dissertations

Recently, physical education researchers have been concerned about the results of national studies reporting young people's low level of participation in physical activity and health problems associated with inactivity. In general girls are less active than boys, and youth from low socioeconomic classes are less active and are more likely be unhealthy than middle or upper class youth. Blacks have the highest risks of health problems and the highest levels of physical inactivity. Among a number of recommendations included in Healthy People 2010, physical education has been identified as a fundamental site for addressing today's challenges. According to physical education …