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Modelling Of Passive Contaminant Transport In River Sediments., Susan Anne Savant-Malhiet Jan 1988

Modelling Of Passive Contaminant Transport In River Sediments., Susan Anne Savant-Malhiet

LSU Historical Dissertations and Theses

Contaminant transport from riverine sediments was investigated via physical and mathematical models. Due to its remote nature, there exists a lack of understanding of transport mechanisms and rates at the sediment-water interface of rivers. This dissertation is focused on evaluation of potential abiotic transport processes which affect the movement of contaminants across this sediment-water interface. Only non-dispersive transport of passive contaminants was considered allowing the research to focus on the movement of the sediment pore water which carries the contaminants. The abiotic processes studied include the advection by flow of sediment pore water and the movement and turnover of sediment …

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Epidemiology Of Campylobacter Jejuni., Kanagasundaram Yogasundram Jan 1988

Epidemiology Of Campylobacter Jejuni., Kanagasundaram Yogasundram

LSU Historical Dissertations and Theses

A study was conducted to determine the prevalence of Campylobacter jejuni in various avian species and humans. Cloacal swabs derived from birds submitted to the Louisiana Veterinary Medical Diagnostic Laboratory for necropsy examination during the period February 1987 through July 1988 were routinely cultured for C. jejuni using Butzler's selective medium. Campylobacter jejuni was isolated from 10.1% of the cases examined. The isolation rate was 25.2% in Galliformes, 12.9% in Anseriformes, 8.3% in Columbiformes, 7.7% in Falconiformes, and 0.6% in Psittaciformes. None of the other orders of birds examined yielded C. jejuni. Prevalence data demonstrated that Galliformes are important reservoirs …

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Genetics Of Callus Formation And Plant Regeneration In Rice (Oryza Sativa L.)., Qi Ren Chu Jan 1988

Genetics Of Callus Formation And Plant Regeneration In Rice (Oryza Sativa L.)., Qi Ren Chu

LSU Historical Dissertations and Theses

Callus formation and plant regeneration rates for both immature panicle and anther culture of rice were studied in several populations, including parents, F$\sb1$, F$\sb2$, F$\sb3$, and backcrossed generations. Significant genotypic differences in regeneration and callus formation rates were observed. In immature panicle culture, F$\sb1$'s generally produced rates of regeneration close to their high parents. Generation mean analysis of regeneration rates revealed the importance of dominance effects (d) and epistatic effects (aa, ad, and dd) in immature panicle culture. In contrast, production of callus by 12 F$\sb1$ hybrids in another culture was closely related to the low parents, suggesting that suppression …

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1. Fine-Tuning Photosensitizer Charge In Prevention Of Back Electron Transfer In Water-Splitting. 2. Perturbation Of Polypyridine Ruthenium(Ii) Excited States., Leslie James Henderson Jr Jan 1988

1. Fine-Tuning Photosensitizer Charge In Prevention Of Back Electron Transfer In Water-Splitting. 2. Perturbation Of Polypyridine Ruthenium(Ii) Excited States., Leslie James Henderson Jr

LSU Historical Dissertations and Theses

It is shown that the charge of the photodonor in electron-transfer reactions is an additional variable that should be considered in strategies to inhibit energy-wasting back electron-transfer reactions. In particular, when microheterogeneous media are used in water-splitting schemes and the photodonor charge is adjusted to take advantage of the electrostatics of a micellar potential surface, the back electron transfer is reduced. It is known that a 'chemical soup' consisting of the photodonor tris(2,2$\sp\prime$-bipyridine)-ruthenium(II) (Ru(bpy)$\sb3\sp{2+}$), the electron relay methyl viologen (MV$\sp{2+}$), and a sacrificial donor like triethanolamine (TEOA) can generate dihydrogen from water in the presence of appropriate catalysts. Back electron …

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Arguing Affect: The Rhetoric Of Peripheral Persuasion., Lewis Blaine Hershey Ii Jan 1988

Arguing Affect: The Rhetoric Of Peripheral Persuasion., Lewis Blaine Hershey Ii

LSU Historical Dissertations and Theses

This study explores the theoretical parameters of peripheral persuasion. Chapter one reviews social scientific approaches to the study of persuasion from researchers in communication theory, psychology, and marketing. This review reveals a bifurcation of the persuasion concept into cognitive and affective dimensions. After demonstrating a bias in social scientific research for the cognitive dimensions of persuasion, chapter one links the affective dimensions of persuasion with the concept of peripheral persuasion and emerging trends in rhetorical theory that emphasize narrative models of communication. Chapter two scrutinizes the distinction between cognitive or central routes to persuasion and affective or peripheral routes to …

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Antigenic Analysis Of Equine Infectious Anemia Virus Using Monoclonal Antibodies., Khalid Abdullah Hussain Jan 1988

Antigenic Analysis Of Equine Infectious Anemia Virus Using Monoclonal Antibodies., Khalid Abdullah Hussain

LSU Historical Dissertations and Theses

Monoclonal antibodies (MCAbs) produced against the prototype cell-adapted Wyoming strain of equine infectious anemia virus (EIAV), a lentivirus, were studied for reactivity with the homologous prototype and 16 heterologous isolates. Eighteen hybridomas producing MCAbs were isolated. Western blot (immunoblot) analyses indicated that 10 were specific for the major envelope glycoprotein (gp90) and 8 for the transmembrane glycoprotein (gp45). Four MCAbs specific to epitopes of gp90 neutralized prototype EIAV infectivity. These neutralizing MCAbs apparently reacted with variable regions of the envelope gp90, as evidenced by their unique reactivity with the panel of isolates, suggesting recognition of at least three different neutralization …

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Effects Of Quantity Of Epicuticular Wax On Leaves And Nitrogen Fertilization Rates On Resistance Of Rice (Oryza Sativa L.) To Sheath Blight (Rhizoctonia Solani Kuhn (Thanatephorus Cucumeris (Frank) Donk);)., Roland Chris Yarkpah Massaquoi Jan 1988

Effects Of Quantity Of Epicuticular Wax On Leaves And Nitrogen Fertilization Rates On Resistance Of Rice (Oryza Sativa L.) To Sheath Blight (Rhizoctonia Solani Kuhn (Thanatephorus Cucumeris (Frank) Donk);)., Roland Chris Yarkpah Massaquoi

LSU Historical Dissertations and Theses

Nine rice cultivars with different levels of resistance to sheath blight, caused by Rhizoctonia solani, were evaluated in the field and greenhouse for quantity of epicuticular wax (EW) from leaves, infection cushion (IC) formation by the pathogen on leaves, and the relationship of these factors to disease resistance. Comparisons among resistant and susceptible cultivars using scanning electron microscopy suggested that more EW was found on the leaf blade and sheath surfaces of resistant cultivars. Gravimetric analysis of EW from rice leaves supported these observations. EW production at different growth stages increased until the boot stage and then dropped. Correlation coefficients …

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Fear Of Crime: Interactions With Age Across Three Explanatory Models., Carol Y. Thompson Jan 1988

Fear Of Crime: Interactions With Age Across Three Explanatory Models., Carol Y. Thompson

LSU Historical Dissertations and Theses

The central issue examined in this research is the association of age and fear of crime, and more specifically, the interaction of age with other variables in determining fear levels. The data used were drawn from a Crime Survey of Louisiana conducted in 1984. The sample was state wide and derived from drivers' license holders in Louisiana. This research used three separate measures of fear in exploring the interaction of age with other predictors of fear of crime: global fear, fear of violent crime, and fear of property crime. The three measures of fear were placed as dependent variables within …

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Development And Design Of A Fluidized Bed/Upflow Sand Filter Configuration For Use In Recirculating Aquaculture Systems., Daniel G. Burden Jan 1988

Development And Design Of A Fluidized Bed/Upflow Sand Filter Configuration For Use In Recirculating Aquaculture Systems., Daniel G. Burden

LSU Historical Dissertations and Theses

A fluidized bed/upflow sand filter configuration, was developed and designed for utilization in recirculating aquaculture system, specifically the soft-shell crab and soft-shell crawfish industries. These filters were selected and designed because of their ability to withstand clogging and still maintain high levels of water quality for aquaculture production. The effectiveness of sand grain size was used to evaluate fluidized bed filter performance with filter loadings ranging from 16 to 1285 pounds of crawfish per cubic foot of filter sand. A coarse sand grain size was recommended as a filter media because of it's ability to shear excessive biofilm growth from …

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The Effects Of Temperature Stress On The Bovine Pituitary-Adrenal-Ovarian Axis: An In-Vitro Study., Terry Davis Jan 1988

The Effects Of Temperature Stress On The Bovine Pituitary-Adrenal-Ovarian Axis: An In-Vitro Study., Terry Davis

LSU Historical Dissertations and Theses

The effect of temperature stress on profiles of LH and FSH from pituitary cells; aldosterone, progesterone, cortisol and corticosterone from adrenocortical cells; and estradiol and progesterone from granulosa cells were evaluated using bovine anterior pituitary, adrenocortical and granulosa cells in primary cultures. Cells were grown to confluency in a 37$\sp\circ$C humidified incubator containing 95% O$\sb2$ and 5% CO$\sb2$. Upon reaching confluency, half of the wells were assigned to 40$\sp\circ$C incubation temperature while the other half remained at 37$\sp\circ$C. The 37$\sp\circ$C temperature represented control conditions whereas 40$\sp\circ$C represented heat stress. Various biological substances, that have been reported to alter hormone production, …

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Analytical-Toxicological Studies Of Environmental Importance., Hessam Ghane Jan 1988

Analytical-Toxicological Studies Of Environmental Importance., Hessam Ghane

LSU Historical Dissertations and Theses

Part One. Acidity and chemical composition of precipitation in Baton Rouge, Louisiana; The synergistic effects of acidity and aluminum on fish. Acid precipitation which consists of both wet precipitation and dry deposition has recently become a significant environmental problem. It has been shown that the effects of acid rain are deleterious to soil, vegetation, aquatic life and buildings. Wet-precipitation-only samplers were used to collect acid rainfalls in the vicinity of Louisiana State University, Baton Rouge and subjected to appropriate chemical analysis for the purpose of characterization of general composition and acidity. About 50% of precipitation is within pH range of …

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Characterization Of The Cellular Immune Defect In Chronic Bovine Paratuberculosis., John Michael Kreeger Jan 1988

Characterization Of The Cellular Immune Defect In Chronic Bovine Paratuberculosis., John Michael Kreeger

LSU Historical Dissertations and Theses

Cattle, naturally infected with Mycobacterium paratuberculosis, were evaluated with respect to immune status. Their ability to express cell mediated immune responses to homologous and heterologous antigens was also evaluated. Lymphocyte and macrophage augmentation was attempted to localize the immune defect in cattle with paratuberculosis. Infected cattle had varying responses to johnin skin test antigen. Lymphocyte blastogenic responses and migration inhibition were, however, consistently positive in infected cattle. Non-infected cattle had positive skin test reactions, blastogenic responses, and migration inhibition after sensitization with M. bovis BCG, M. paratuberculosis, and keyhole limpet hemocyanin. No changes were seen in lymphocyte blastogenic response, migration …

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A Judicial Decision Under Pressure: A Dramaturgical Analysis Of The Rosenberg Case., Kenneth C. Petress Jan 1988

A Judicial Decision Under Pressure: A Dramaturgical Analysis Of The Rosenberg Case., Kenneth C. Petress

LSU Historical Dissertations and Theses

This study examines the 1951 death sentences imposed upon Ethel and Julius Rosenberg by Judge Irving R. Kaufman. This study's focus is discovering how these sentences came to be, rhetorically. The study employs the dramatistic pentad suggested by Kenneth Burke. The scene is seen as the dominant, driving force behind the judge's sentences. The scene is labeled as "betrayal"; the name betrayal resulting from: (1) the Cold War; (2) McCarthyism; (3) the Korean War; and (4) other domestic post-World War II problems. The analysis pictures the American government using the Rosenbergs as scapegoats to symbolically cleanse away betrayal images. Thus, …

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Plant Protein Improvement By Genetic Engineering: Use Of Synthetic Genes., Moon Sik Yang Jan 1988

Plant Protein Improvement By Genetic Engineering: Use Of Synthetic Genes., Moon Sik Yang

LSU Historical Dissertations and Theses

The essential amino acid composition of plant foodstuffs is very important, especially in the developing countries where people very heavily depend on plant proteins from a single source. In these situations, it would be highly beneficial to 'engineer' the plant to produce proteins with a balanced essential amino acid content. Recombinant DNA technology and Agrobacterium-based vector systems offer a novel approach to modify plant proteins. Several attempts with some encouraging results have been made to express plant storage protein genes in transgenic plants. However, improvement of the quality of plant protein using these techniques is in an early stage. In …

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Music Preference: A Comparison Of Verbal Opinions And Behavioral Intentions Of Selected High School Students., Karen O'Neal Graffius Jan 1988

Music Preference: A Comparison Of Verbal Opinions And Behavioral Intentions Of Selected High School Students., Karen O'Neal Graffius

LSU Historical Dissertations and Theses

The purpose of the study was to compare high school students' verbal opinions and behavioral intentions for musicians and their music. Subjects were high school students enrolled in a gifted and talented curriculum (N = 57) and students enrolled in the regular curriculum (N = 45). They were further categorized as students with three or more years of music training (N = 56), students with less than three years of music training (N = 46), black students (N = 39) and white students (N = 63). In part one of the study all of the subjects were given a list …

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Dynamic Headspace Sampling And Chromatographic And Mass Spectrometric Investigations Of Volatile Flavor Components In Red Swamp Crayfish (Procambarus Clarkii) Hepatopancreatic Tissue., Stephen S. Williams Jan 1988

Dynamic Headspace Sampling And Chromatographic And Mass Spectrometric Investigations Of Volatile Flavor Components In Red Swamp Crayfish (Procambarus Clarkii) Hepatopancreatic Tissue., Stephen S. Williams

LSU Historical Dissertations and Theses

This analytical food flavor study concentrated on the development and application of improved analytical techniques to investigate volatile flavor components in crayfish (Procambarus clarkii) hepatopancreatic tissue. This work consisted of four main parts. The first part dealt with the development of an improved dynamic headspace sampling procedure for the sampling and concentration of volatile flavor components in the headspace of high moisture foods. The second section described the successful application of this improved procedure for chromatographic and mass spectrometric investigation of dynamic headspace volatile flavor components of crayfish hepatopancreatic tissue. The third part discussed the quantitative determination of these volatile …

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Pseudomonas Sp. Strain Pg2982: Uptake Of Glyphosate And Cloning Of A Gene Which Confers Increased Resistance To Glyphosate., Joseph E. Fitzgibbon Jan 1988

Pseudomonas Sp. Strain Pg2982: Uptake Of Glyphosate And Cloning Of A Gene Which Confers Increased Resistance To Glyphosate., Joseph E. Fitzgibbon

LSU Historical Dissertations and Theses

Chapter 1. Pseudomonas sp. strain PG2982 has the ability to use the phosphonate herbicide, glyphosate, as a sole phosphorus source. Glyphosate uptake occurs at a maximum in the late log phase of growth and is induced by phosphate starvation. Uptake is inhibited by phosphate and arsenate, but not by the amino acids glycine and sarcosine. The K$\sb{\rm m}$ and V$\sb{\rm max}$ for glyphosate uptake were calculated to be 23uM and 0.97nmoles/mg dry wt/min, respectively. A phosphate transport system with a broad substrate specificity seems to be responsible for glyphosate uptake. Chapter 2. Pseudomonas sp. strain PG 2982 is highly resistant …

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Lumières, Fall 1987, Louisiana State University And Agricultural & Mechanical College Oct 1987

Lumières, Fall 1987, Louisiana State University And Agricultural & Mechanical College

Friends of the LSU Libraries

The bi-annual newsletters from the Friends of the Library contain information about upcoming and recent events, descriptions of new collections, a list of members, and occasional obituaries, which inform members of the news and needs of the LSU Libraries.

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Louisiana Agriculture Magazine, Summer 1987, Lsu Agricultural Experiment Station Jul 1987

Louisiana Agriculture Magazine, Summer 1987, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Louisiana Agriculture Magazine, Spring 1987, Lsu Agricultural Experiment Station Apr 1987

Louisiana Agriculture Magazine, Spring 1987, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Lsu General Catalog 1987-1988, Louisiana State University And Agricultural And Mechanical College Jan 1987

Lsu General Catalog 1987-1988, 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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A Critical Examination Of The Mythological And Symbolic Elements Of Two Modern Science Fiction Series: "Star Trek" And "Doctor Who"., Gwendolyn Marie Olivier Jan 1987

A Critical Examination Of The Mythological And Symbolic Elements Of Two Modern Science Fiction Series: "Star Trek" And "Doctor Who"., Gwendolyn Marie Olivier

LSU Historical Dissertations and Theses

Carl Gustav Jung and Joseph Campbell both believe that a living mythology is a necessary factor in a viable civilization. According to these two scholars it is the self-actualized individual who is the key element in a healthy society. The purpose of a mythology for Jung and Campbell is to provide the individual with a set of symbols that will assist him in the process of self-realization. Jung believed that the major source of mythology in today's world is dreams, but he acknowledged the fact that anything which provided the unconscious mind with the appropriate symbols could function on a …

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Effects Of Crude Oil Composition And Alcohol Augmentation On Transient Interfacial Phenomena In Alkaline-Water/Crude-Oil Systems., Vivien Johan Cambridge Jan 1987

Effects Of Crude Oil Composition And Alcohol Augmentation On Transient Interfacial Phenomena In Alkaline-Water/Crude-Oil Systems., Vivien Johan Cambridge

LSU Historical Dissertations and Theses

The microscopic phenomena which occur at the alkaline-water/crude-oil interface greatly affect the potential for success of the alkaline water flooding process. The propensity of crude oils to emulsify and the ability of the oil to coalesce improves the chance for successful oil bank formation and leads to better recovery efficiency. Interfacial phenomena are affected by interfacial rheological properties and interfacial tensions. This research investigates the interfacial behavior of alkaline-water/crude-oil systems in three parts. In part one, a new method and apparatus are designed for the measurement of interfacial shear viscosity (IFSV). The method is applied to study the effect of …

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Structure And Expression Of The Saccharomyces Cerevisiae Cry1 Gene: A Highly Conserved Ribosomal Protein Gene, J. C. Larkin, J. R. Thompson, J. L. Woolford Jan 1987

Structure And Expression Of The Saccharomyces Cerevisiae Cry1 Gene: A Highly Conserved Ribosomal Protein Gene, J. C. Larkin, J. R. Thompson, J. L. Woolford

Faculty Publications

No abstract provided.

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Nitrogen Fertilization Influences On Cotton Yields, Petiole Nitrate Concentrations, And Residual Soil Nitrate Levels At The Macon Ridge, Northeast, And Red River Research Stations, S A. Phillips Jan 1987

Nitrogen Fertilization Influences On Cotton Yields, Petiole Nitrate Concentrations, And Residual Soil Nitrate Levels At The Macon Ridge, Northeast, And Red River Research Stations, S A. Phillips

LSU Agricultural Experiment Station Reports

No abstract provided.

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Fail-Safe Local Area Networking Using Channel Redundancy., Ibibia Karisemie Dabipi Jan 1987

Fail-Safe Local Area Networking Using Channel Redundancy., Ibibia Karisemie Dabipi

LSU Historical Dissertations and Theses

Local area networks represent a major development in data communications. The ring topology is the most popular of the local area networks. Its inherent problem, however, is the breakdown of the entire network in the event of a station failure resulting in total shut-down until repairs can be made. This dissertation is a study of designs for fail-safe local area networks. Two methods for maintaining the operation of a ring network are analyzed and compared. The first method uses a double-ring where the inner loop is optically coupled to the outer ring whenever a node failure occurs. The analysis performed …

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A Study Of The Temperature Dependence Of Ion-Molecule Association Reactions. Halide Ion Addition To A Selected Group Of Lewis Acids., Charles Ray Herd Jan 1987

A Study Of The Temperature Dependence Of Ion-Molecule Association Reactions. Halide Ion Addition To A Selected Group Of Lewis Acids., Charles Ray Herd

LSU Historical Dissertations and Theses

Recent evidence has indicated that the ion-molecule association reaction BF$\sb 3$ + F$\sp -$ - thinspace- BF$\sb 4\sp -$ has both collisional stabilization and radiative stabilization pathways. Preliminary studies indicated that other boron trihalide systems (BF$\sb 3$ + Cl$\sp -$, Br$\sp -$, and BCl$\sb 3$ + Cl$\sp -$, Br$\sp -$) behave similarly. We have studied the temperature dependence of these systems in an effort to learn more about the individual rate coefficients that constitute the standard association mechanism modified to include a radiative stabilization pathway. In order to determine properties of a system which play an important role in the …

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Generation, Migration, And Transportation Of Gas Contaminated Regions Of Drilling Fluid., Vicente Casariego Jan 1987

Generation, Migration, And Transportation Of Gas Contaminated Regions Of Drilling Fluid., Vicente Casariego

LSU Historical Dissertations and Theses

The control of high pressure gas encountered while drilling for hydrocarbon reservoirs is one of the more expensive and potentially dangerous problems of the oil producing industry. When the control of high pressure gas is not accomplished flow of gas from the formation to the wellbore occurs. Once detected, the gas influx is stopped by shutting-in the well. This is the first measure taken in a series of operations which are designed to bring back the well under control. These operations are referred to as well control procedures. Well control simulators are used both for evaluating well control procedures and …

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Metal Availability And Rice Growth Under Controlled Redox Potential And Ph In Acid Sulfate Soils Of Thailand., Jirapong Prasittikhet Jan 1987

Metal Availability And Rice Growth Under Controlled Redox Potential And Ph In Acid Sulfate Soils Of Thailand., Jirapong Prasittikhet

LSU Historical Dissertations and Theses

The effects of controlled pH and redox potential (Eh) conditions on transformations of several metals and their effects on rice growth were studied in laboratory microcosms using acid sulfate (Sulfic Tropaquept) and non-acid sulfate (Typic Tropaquept) soil materials from Thailand. Some microcosms were incubated at selected controlled Eh conditions (500, 250, 50, and $-150$ mV). Others were incubated at controlled pH and Eh levels (3.5, 4.5, and 5.5 and redox potential levels $\geq$500, 250, and 50 mV respectively). Acid sulfate soil-tolerant and sensitive rice varieties (IR 46 and IR 26, respectively) were used in this study. Results indicated water-soluble Fe …

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Louisiana Agriculture Magazine, Winter 1987-1988, Lsu Agricultural Experiment Station Jan 1987

Louisiana Agriculture Magazine, Winter 1987-1988, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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