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From Their Perspective: Issues Of Schooling And Family Culture Of Four African-American First Generation College Students., Neari Francois Warner Jan 1992

From Their Perspective: Issues Of Schooling And Family Culture Of Four African-American First Generation College Students., Neari Francois Warner

LSU Historical Dissertations and Theses

The diversity of students entering today's colleges and universities makes it increasingly important that educators, theorists and other scholars strive toward a fuller understanding of the life conditions of minority groups. This research is designed to provide insight into the processes, pressures and people that shape the lives of one particular minority group, the African American non-traditional, first generation college student. In this research, I examine the school and family experiences of four of these students in an attempt (1) to provide data that contribute to the refutation of the stereotypical images and myths that are so pervasively used to …

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The Stability Of Thick, Self-Gravitating Disks In Protostellar Systems., John William Woodward Jan 1992

The Stability Of Thick, Self-Gravitating Disks In Protostellar Systems., John William Woodward

LSU Historical Dissertations and Theses

We perform a computational survey of the stability of protostellar systems which contain a self-gravitating disk. The systems are initially represented by a point mass $M\sb{c}$ at the center and a geometrically thick, axisymmetric disk of mass $M\sb{d}$ that supports uniform specific angular momentum and obeys an n = 3/2, polytropic equation of state. The equilibrium disk structure is uniquely defined upon the specification of two key dimensionless system parameters: $M\sb{d}/M\sb{c}$ and $T/\vert W\vert$ (the ratio of rotational kinetic energy of the disk to the gravitational potential energy of the system). The focus of this work is the identification of …

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Ultrafast Study Of Photochemistry On Chromium Hexacarbonyl Using Resonance Raman Spectroscopy., Soo-Chang Yu Jan 1992

Ultrafast Study Of Photochemistry On Chromium Hexacarbonyl Using Resonance Raman Spectroscopy., Soo-Chang Yu

LSU Historical Dissertations and Theses

In this dissertation ultrafast photochemistry of Cr(CO)$\sb6$ using picosecond resonance Raman spectroscopy is studied. The advantage of the transient resonance Raman spectroscopy for this study is demonstrated along with a Raman differencing technique. This study is divided into two main parts. The first part deals with the property of the electronic excited state of the Cr(CO)$\sb6.$ The attempt to reveal the excited electronic structure of Cr(CO)$\sb6$ is tried with the help of Albrecht vibronic theory and wave packet description. Reaction coordinate and Jahn-Teller effects have been investigated in detail. Two possible reaction coordinates are found in contrast to the results …

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Phylogenetic Systematics Of The Ulvophyceae (Chlorophyta) Based On Cladistic Analyses Of Ribosomal Rna Genes And Morphology., Frederick William Zechman Jan 1992

Phylogenetic Systematics Of The Ulvophyceae (Chlorophyta) Based On Cladistic Analyses Of Ribosomal Rna Genes And Morphology., Frederick William Zechman

LSU Historical Dissertations and Theses

Cladistic analyses of non-molecular and nuclear-encoded rRNA sequence data provided the basis for hypotheses of relationships for the green algal class Ulvophyceae. Non-molecular data rooted with Chara support hypotheses which group the Chlorophyceae and Pleurastrophyceae with ulotrichalean and ulvalean Ulvophyceae. Analyses of rRNA sequence data group the siphonous and siphonocladous Ulvophyceae (i.e. Caulerpales, Siphonocladales, and Dasycladales) with the Chlorophyceae and Pleurastrophyceae. Although hypotheses supported by these independent data sets are incongruent, they suggest that the Ulvophyceae is not monophyletic. Based on rRNA sequences, pleurastrophycean taxa, which, like the Ulvophyceae, possess a counter-clockwise arrangement of flagellar basal bodies, are more closely …

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The Rhetoric Of Redemption: A Development Of Kenneth Burke's Theory Of Guilt-Purification-Redemption And Its Application To Martin Luther King, Jr.'S "I Have A Dream" Speech., David A. Bobbitt Jan 1992

The Rhetoric Of Redemption: A Development Of Kenneth Burke's Theory Of Guilt-Purification-Redemption And Its Application To Martin Luther King, Jr.'S "I Have A Dream" Speech., David A. Bobbitt

LSU Historical Dissertations and Theses

This dissertation presents an exposition and development of Kenneth Burke's theory of guilt-purification-redemption (also referred to as the "redemption drama"), and then an application of that theory through a critical analysis of Martin Luther King, Jr.'s "I Have a Dream" speech. King's speech is treated as the "representative anecdote" of the moderate wing of the first phase of the civil rights movement. The speech became an authorizing text on race relations and provided the movement with an articulation of its logic and narrative form. Usually Burke's theory is seen as positing two primary modes of purification of guilt: victimage and …

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Centralization And Decentralization: The Relationship Of Bureaucracy, Autonomy And The Principalship In Elementary Schools., Cheryl Berot Boutte Jan 1992

Centralization And Decentralization: The Relationship Of Bureaucracy, Autonomy And The Principalship In Elementary Schools., Cheryl Berot Boutte

LSU Historical Dissertations and Theses

Throughout the last decade, parents and communities have continued to press for more control over their schools in an attempt to improve performance. Members of the educational community have begun calling for school restructuring to return decision making power to the school site professionals. These calls for the decentralization of our highly centralized school systems have prompted educators, researchers and political scientists to examine the organizational settings in which schools operate. This study investigated the influence of organizational structure, namely centralized bureaucracy and decentralized autonomy on school leadership and the relationship of that leadership to the school's culture. The study …

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Detecting The Scale And Resolution Effects In Remote Sensing And Gis., Changyong Cao Jan 1992

Detecting The Scale And Resolution Effects In Remote Sensing And Gis., Changyong Cao

LSU Historical Dissertations and Theses

This study examines the relationship between resolution and fractal dimensions of remotely sensed images. Based on the results of testing for the reliability of the algorithms on hypothetical surfaces, the isarithm algorithm is selected for determining the fractal dimensions of remotely sensed images. This algorithm is then applied to simulated fractal Brownian motion images and four calibrated airborne multispectral remotely sensed image data sets with different true and artificial resolutions for Puerto Rico. The results from applying the fractal method to images at different levels of resolution suggest that the higher the resolution of an image, the higher the fractal …

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The Theatre Of Religion: Jimmy Swaggart Within American Myth Discourse., Terry Grant Byars Jan 1992

The Theatre Of Religion: Jimmy Swaggart Within American Myth Discourse., Terry Grant Byars

LSU Historical Dissertations and Theses

This study explores the myth of the self-made man in American popular culture and how Jimmy Swaggart, the renowned televangelist, manipulates this myth in representing himself as an American hero. Central to such inquiry is Swaggart's use of theatrical device in promoting his heroism. Three fundamental questions provide the focus for investigation: (1) How in general does the creation of myth serve the needs of culture? (2) How specifically does the myth of self-made-ness benefit American culture? and (3) How is Swaggart able to participate in this powerful myth (especially using theatrical modes) in order to gain cultural sanction? In …

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Jeremy Rifkin Challenges Recombinant Dna Research: A Rhetoric Of Heresy., Wiley Michael Futrell Jan 1992

Jeremy Rifkin Challenges Recombinant Dna Research: A Rhetoric Of Heresy., Wiley Michael Futrell

LSU Historical Dissertations and Theses

Western culture, in large part, is a product of scientific inquiry, technological development and the ability to harness some of nature's resources. Much of society looks to science for technology-related solutions to many of its ills. As it develops new technology, science necessarily seeks to understand and control the forces of nature. Although science assumes a prominent role in contemporary society, that prominence does not necessarily translate into cultural consensus on the progress achieved by technological developments. Another perspective is represented by those who contend that continued technological advancement is the source of existing problems, not the solution. As these …

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The Rhetoric Of Synnationalism: A Model Of Foreign Policy Discourse., Ralph A. Hamlett Jan 1992

The Rhetoric Of Synnationalism: A Model Of Foreign Policy Discourse., Ralph A. Hamlett

LSU Historical Dissertations and Theses

The United States, as other nation-states, claims legitimacy as an agency for the expression of the aspirations of its people. This political structure appeared as part of a historical process that implied a transfer of authority from ruling elite(s) to the public. However, U.S. foreign policy discourse evidences an incomplete relocation of authority. In matters of sovereignty and national interests, the policy establishment considers itself more capable of decisions than ordinary people. The establishment tends to view citizens as masses disinterested in and incapable of understanding vital decisions of the state. The policy establishment assumes the public's role is best …

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The Influence Of Job Satisfaction And Organizational Commitment On Intention To Leave Of Nurse Educators., Catherine Blackwell Holland Jan 1992

The Influence Of Job Satisfaction And Organizational Commitment On Intention To Leave Of Nurse Educators., Catherine Blackwell Holland

LSU Historical Dissertations and Theses

The purpose of this study was to determine what factors influenced the intention of nurse educators to leave their current teaching positions at the university level in Louisiana. A simple random sample of 125 nurse educators employed full time in baccalaureate degree nursing programs were the study subjects. Respondents were 115 (92%) of the nurse educators. A four part instrument was used for data collection and analysis: Job Descriptive Index (JDI) and Job In General (JIG), Organizational Commitment Questionnaire (OCQ), Intention to Leave (ITL), and demographic information. Intention to Leave was a researcher developed instrument to measure intention to leave. …

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Students' Use Of Teacher Feedback During Badminton Instruction., Nyit Chin Keh Jan 1992

Students' Use Of Teacher Feedback During Badminton Instruction., Nyit Chin Keh

LSU Historical Dissertations and Theses

This study examined the relationship between teacher feedback variables, student process variables, and student achievement. Another purpose was to investigate the mediating role of student process variables in student achievement. The subjects were 41 college students enrolled in two beginning badminton classes, and an experienced physical education teacher volunteered to teach both classes. Ten 45 minute instructional sessions took place over a 5 week period. Each class session was videotaped for subsequent coding. Subjects were pretested, posttested, and given a retention test on three badminton skills, the forehand high serve, the forehand overhead clear, and the backhand overhead clear. Student …

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The Role Of Affect In Service Encounter Satisfaction: An Experimental Study., Rama Kumari Jayanti Jan 1992

The Role Of Affect In Service Encounter Satisfaction: An Experimental Study., Rama Kumari Jayanti

LSU Historical Dissertations and Theses

The objective of the dissertation was to address the influence of affect towards service provider on service encounter satisfaction. The following research questions were examined: (1) the impact of affect towards the service provider on perceived performance and satisfaction; (2) the relative influence of affective versus cognitive variables in explaining satisfaction with services; (3) the explanatory ability of the disconfirmation model of satisfaction within the context of services. An experimental study was designed to address the above questions. Two factors, affect towards the service provider labeled Evaluative Impression of the service provider and Interaction Style (one dimension of perceived performance) …

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Parallel Geometric Algorithms., Fenglien Lee Jan 1992

Parallel Geometric Algorithms., Fenglien Lee

LSU Historical Dissertations and Theses

Geometric algorithms have many important applications in science and technology. Some geometric problems require fast response time that could not be achieved by traditional sequential algorithms. However, the speed, power and versatility of parallel computers can be exploited to develop efficient geometric algorithms as shown in this dissertation. Our study focuses on designing efficient parallel geometric algorithms and analyzing their computational complexities. In this research, first we developed a parallel algorithm to find the maxima of a set of N points in the d-dimensional space, d $>$ 3, on a hypercube SIMD machine. Our algorithm is a parallel implementation …

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Molecular Cloning, Expression And Site-Directed Mutagenesis Of A Complementary Dna Encoding Rabbit Muscle Fructose 6-Phosphate-1-Kinase., Jau-Yi Li Jan 1992

Molecular Cloning, Expression And Site-Directed Mutagenesis Of A Complementary Dna Encoding Rabbit Muscle Fructose 6-Phosphate-1-Kinase., Jau-Yi Li

LSU Historical Dissertations and Theses

This dissertation contains three parts based on my research project which investigates three aspects of rabbit muscle phosphofructokinase (ATP: D-fructose-6-phosphate-1-phosphotransferase, EC 2.7.1.11; PFK). The first part reports the isolation and characterization of two full-length rabbit muscle PFK cDNAs. The DNA sequences of these two cDNAs (cDNA-A and cDNA-B) show an identical coding sequence but heterogeneous 5$\sp\prime$untranslated regions. cDNA-A is formed by removal of a 1.7 Kb upstream intron while cDNA-B retains the 3$\sp\prime$region of this intron. The second part describes the expression of the cDNA in several bacterial hosts. Recombinant rabbit muscle PFK has been expressed at a significant level …

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A Study Of Selected Phenomena Observed During Rotary Kiln Incineration., Christopher Brian Leger Jan 1992

A Study Of Selected Phenomena Observed During Rotary Kiln Incineration., Christopher Brian Leger

LSU Historical Dissertations and Theses

A comprehensive research program is underway at LSU with the ultimate goal of improved understanding and predictive capability for the performance of rotary kiln incinerators. In an extensive experimental study, packs containing toluene-contaminated clay sorbent are batch-fed into the field-scale rotary kiln incinerator of the Louisiana Division of Dow Chemical USA. Water cooled probes are used to obtain continuously gas temperatures and species concentrations within the kiln and afterburner, and existing facility instruments are also monitored. The kiln rotation rate is varied and turbulence air (air injected into the kiln to improve mixing) is added or turned off. Conditions at …

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Taxonomic Treatment Of Indigofera L. (Fabaceae: Faboideae) In The New World., Alan Wayne Lievens Jan 1992

Taxonomic Treatment Of Indigofera L. (Fabaceae: Faboideae) In The New World., Alan Wayne Lievens

LSU Historical Dissertations and Theses

The current taxonomic study of Indigofera (Fabaceae) as it occurs in the New World has several aims. The first addresses taxonomic and nomenclatural issues related to North American taxa. Because such issues have not been well understood for many of these taxa at various ranks, a synopsis of all taxa known to be referable to North America is presented along with a thorough discussion of nomenclatural issues (including synonymy) for each. This discussion is initially placed within the framework of the species groups proposed by Rydberg in 1923. A preliminary cladistic analysis of these North American species groups is presented. …

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Applicability Of Bioluminescence Assay And Aerobic Bacterial Counts For The Evaluation Of Raw Milk Quality., Abdul Ghafoor Mian Jan 1992

Applicability Of Bioluminescence Assay And Aerobic Bacterial Counts For The Evaluation Of Raw Milk Quality., Abdul Ghafoor Mian

LSU Historical Dissertations and Theses

Raw milk samples were analyzed to determine the bacteriological quality by the standard plate count (SPC), adenosine-5$\sp\prime$-triphosphate (ATP) assay, preliminary incubation counts, and the psychrotrophic bacteria count (PBC). In a comparison of SPC and ATP content, an overall correlation coefficient of 0.97 was found between the two methods. The correlations between ATP content and SPC of fresh raw milk samples at zero hour and after preliminary incubating these samples at 12.8 and 15.6$\sp\circ$C for 18 hours were.96,.97, and.97, respectively. The regression coefficients for all types of milk samples were highly significant ($P <$.01). High correlation coefficients demonstrated that the ATP measurement in combination with preliminary incubation practices could be a rapid technique for the determination of bacteriological quality of milk at receiving stations and milk processing plants. Median SPC for 175 fresh raw milk samples was 36,000/ml. The bioluminescence technique is reported previously to have a good correlation with SPC in the range of 1.0 $\times$ 10$\sp5$ to 1.0 $\times$ 10$\sp{10}$ bacteria/ml. The commingled milk coming at the receiving stations sometimes have a bacterial count that is less than 1.0 $\times$ 10$\sp{5}$ bacteria/ml. A correlation coefficient of.87 was calculated between the SPC and ATP values for the overall data while lowering the SPC range from 1.0 $\times$ 10$\sp5$ to 1.0 $\times$ 10$\sp4$ bacteria/ml. This range is more practical as a quick screening of raw milk at dairy processing facilities since 81 percent of all raw milk samples fell in this range. An equation (SPC = $-$1642213 + 6751(ATP)) was developed from the combined experimental data which could estimate the SPC of raw milk samples using their ATP content. Another phase of the experiment was to ascertain if the Petrifilm$\sp{\rm TM}$ technique could be effectively used in place of agar method to estimate PBC. The correlation coefficient between the Petrifilm$\sp{\rm TM}$ and the agar plate method for both the fresh and preliminary incubated raw milk samples was.99. A high linearity of relationship shows that one method can be substituted with the other. However, the Petrifilm$\sp{\rm TM}$ technique took longer than the usual time of 25 h to develop red colonies at 21$\sp\circ$C because of the slow reduction of the dye reagent triphenyl tetrazolium chloride (TTC) at this temperature.

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Modeling Of Circulation And Transport In Terrebonne Bay, Louisiana And Its Implications For Oyster Harvesting Management., Ellen J. Prager Jan 1992

Modeling Of Circulation And Transport In Terrebonne Bay, Louisiana And Its Implications For Oyster Harvesting Management., Ellen J. Prager

LSU Historical Dissertations and Theses

Contamination of oyster-rich waters in south Louisiana by sewage-related wastes is believed to occur on a seasonally varying basis, and pose a serious threat to both human welfare and the local economy. Fluctuations in the meteorologic and oceanographic conditions in the region are believed to be responsible for the variability observed in bacterial concentrations. To gain a better understanding of the relationship between transport processes, environmental forcing, and the potential for contamination, a combined program of in situ measurements and numerical modeling techniques was conducted in the nearshore waters of Terrebonne Bay, Louisiana. A finite element model based on the …

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A Multi-Criterion Transactional Model., Bradley Shawn O'Hara Jan 1992

A Multi-Criterion Transactional Model., Bradley Shawn O'Hara

LSU Historical Dissertations and Theses

This objectives of this dissertation were: (1) to conceptualize and test the influence of transactional elements, personal elements, and contextual elements on the transactional outcomes of trust, satisfaction and commitment; (2) to examine the role of external variables on transactional outcomes; and (3) to assess the interaction among transactional outcomes. Two hundred and eighteen propane gas retailers completed a mail questionnaire concerning an interaction (either discrete or on-going) with one of their suppliers. Perceptions around norms of the contract with this supplier (i.e., solidarity, role integrity), personal characteristics and traits of the salesperson (i.e., similarity, expertise, ethical orientation, customer orientation), …

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A Regional Market Model For Construction Aggregate Materials., Alicia Norma Rambaldi Jan 1992

A Regional Market Model For Construction Aggregate Materials., Alicia Norma Rambaldi

LSU Historical Dissertations and Theses

The primary objective of this dissertation is to model the regional markets for traditional construction aggregates, sand, gravel, and crushed stone. The long-term dynamics of the construction industry related to the demand for aggregates is modeled through a partial adjustment mechanism. The dynamics of the construction industry is introduced into the estimation of a simultaneous equations model of the demand and supply for aggregates at district levels. An engineering-based cost function for extraction of sand and gravel is estimated based on data collected from an operator's survey in the states of Alabama, Arkansas, Louisiana, Mississippi, and Texas. A step-supply for …

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The Effects Of Prompting On Catching Proficiency Of Young Mildly Retarded Children., Joseph G. Schmalfeldt Jan 1992

The Effects Of Prompting On Catching Proficiency Of Young Mildly Retarded Children., Joseph G. Schmalfeldt

LSU Historical Dissertations and Theses

This study sought to determine the effects of prompting on the catching proficiency of young mildly mentally retarded boys. The study randomly assigned seventy-two 7 year old boys, thirty-six nondisabled and thirty-six mildly mentally retarded, to 3 treatment groups. The treatment were No, 1 or 3 prompts. The subjects were initially given an catching proficiency pretest. Next, they were given 6 practice sessions over a 2 week period. Finally, they were given a catching proficiency posttest. Both the mentally retarded and nondisabled groups in this study improved with practice. In terms of prompting, 1 prompt was as effective as 3 …

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Developing A Research Agenda For The Louisiana Cooperative Extension Service., Fred S. Sanders Jr Jan 1992

Developing A Research Agenda For The Louisiana Cooperative Extension Service., Fred S. Sanders Jr

LSU Historical Dissertations and Theses

The primary purpose of this study was to determine potential future research priorities for the Louisiana Cooperative Extension Service. The Delphi method of forecasting was determined to be the most appropriate for use in this study. Having a knowledge of, and a current relationship with, the Louisiana Cooperative Extension Service (LCES) was the initial criteria for selecting panelists for this study. The final panel consisted of forty LCES personnel. Three rounds of questionnaires were used in this study. The Round 0 questionnaire was open-ended and was used to generate a list of perceived research items most in need of research …

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Influences On The Instream Distribution Of Astyanax Fasciatus In A Small River In Costa Rica., Cecil Kelly Swing Jan 1992

Influences On The Instream Distribution Of Astyanax Fasciatus In A Small River In Costa Rica., Cecil Kelly Swing

LSU Historical Dissertations and Theses

The instream distribution of the tetra, Astyanax fasciatus, was investigated through approximately 700 hours of field observations in a small Costa Rican stream on the southwestern Pacific coast near Golfito. Individuals tended to remain in particular pools where they subsisted primarily on a diet of terrestrial insects. These fish were able to migrate, and only as many individuals stayed in any pool as could be sustained there by available food resources. Because the water intercepted insects fairly uniformly over its surface, the biomass of fish occupying any particular pool was proportional to its surface area (r$\sp2$ = 0.652). The amount …

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Effects Of Vertebrate Herbivory On Louisiana Coastal Marshes., Katherine Lynn Taylor Jan 1992

Effects Of Vertebrate Herbivory On Louisiana Coastal Marshes., Katherine Lynn Taylor

LSU Historical Dissertations and Theses

The disturbances of herbivory, simulated "eat-outs" (clipping and removal of above-ground biomass), and burning were examined for their effect on total biomass, individual species abundance, and species richness in several different marsh communities. Herbivory significantly reduced the total community biomass of all the marshes studied. Simulated "eat-outs" reduced the total biomass of the freshwater marsh but had no persistent effect on the total biomass of either the oligohaline or mesohaline marshes of the Pearl River. Both the oligohaline and the mesohaline marshes were able to recover from a removal of above-ground biomass (simulated "eat-out") within two years. The freshwater marsh …

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Interference, Management, And Growth Response Of Wild Poinsettia (Euphorbia Heterophylla L.) In Soybean., Teresa Summerford Willard Jan 1992

Interference, Management, And Growth Response Of Wild Poinsettia (Euphorbia Heterophylla L.) In Soybean., Teresa Summerford Willard

LSU Historical Dissertations and Theses

In field studies conducted in Louisiana in 1990 and 1991, area of influence, density, and duration of interference methodologies were used to evaluate wild poinsettia (Eupborbia heterophylla L.) interference in soybean (Glycine max (L.) Merr.). In 1990, soybean seed yield within 10 cm of wild poinsettia was similar to distances of 10 to 20 and 20 to 40 cm, but was less than that for distances greater than 40 cm from the weed. In contrast, soybean yields in 1991 growing within 10 cm of the weed were less than at greater distances. Weed interference resulted in a 9.4 and 18% …

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Dialogue Journal Writing In A Foreign Language Classroom: Assessing Communicative Competence And Proficiency., Lynn Patricia Baudrand-Aertker Jan 1992

Dialogue Journal Writing In A Foreign Language Classroom: Assessing Communicative Competence And Proficiency., Lynn Patricia Baudrand-Aertker

LSU Historical Dissertations and Theses

This research studied dialogue journal writing, as it occurred between a teacher and twenty-one students in a French III high school. Results on attitude questionnaire indicated that dialogue journals helped students overcome their fear of the written form and increase their self-confidence and willingness to write. By demystifying the writing process, writing in their dialogue journals helped these students develop positive attitudes. The results on writing proficiency pre and post-tests indicated that students performed as well or better than students after four years of a foreign language in a high school setting or four semesters of college instruction. The dialogue …

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Characterization Of Gentamicin Resistance In Enteric Bacteria Isolated From Pseudomys Scripta-Elegans From Commercial Turtle Farms., Michelle Anne Brassett Jan 1992

Characterization Of Gentamicin Resistance In Enteric Bacteria Isolated From Pseudomys Scripta-Elegans From Commercial Turtle Farms., Michelle Anne Brassett

LSU Historical Dissertations and Theses

Several genera of aminoglycoside resistant enteric bacteria were isolated from commercial turtle farms. Citrobacter freundii and Proteus vulgaris were the most prevalent organisms. Gentamicin resistance, measured by minimum inhibitory concentrations (MIC), ranged as high as 100 $\mu$g/ml. While resistance to other antibiotics was detected in gentamicin-resistant isolates, no correlation was observed between antibiotic resistance and plasmid content. Spontaneous mutation to gentamicin could not account for the high levels of gentamicin resistance found in the original isolates. Regions of chromosomal DNA encoding gentamicin resistance of 100 $\mu$g/ml were obtained from two Citrobacter freundii, two Proteus vulgaris, and two Salmonella enteritidis strains. …

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The Use Of Hydrologically Altered Wetlands To Treat Wastewater In Coastal Louisiana., Andree Marie Breaux Jan 1992

The Use Of Hydrologically Altered Wetlands To Treat Wastewater In Coastal Louisiana., Andree Marie Breaux

LSU Historical Dissertations and Theses

Two major environmental problems currently affecting Louisiana are a high rate of coastal wetland loss and high levels of surface water pollution. The application of secondarily treated wastewater to wetlands is proposed as a means of dealing with these problems. The benefits of wetland wastewater treatment include improved surface water quality, increased accretion rates to balance subsidence, improved plant productivity, and decreased capital outlays for conventional engineering treatment systems. Wetland treatment systems can be designed and operated to restore deteriorating wetlands to previous levels of productivity. Hydrologically altered wetlands in the Louisiana coastal zone have been selected as appropriate for …

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Pedological Investigation Of Mangrove Soils In Relationship To Rice Management In The Republic Of Guinea., Sekou Cisse Jan 1992

Pedological Investigation Of Mangrove Soils In Relationship To Rice Management In The Republic Of Guinea., Sekou Cisse

LSU Historical Dissertations and Theses

Mangrove soils along the Guinea coast are among the most fertile and potentially suitable soils for rice production. Rice production success and feasibility is hampered by adverse soil chemistry conditions and the use of traditional farming methods. The objectives were to undertake a pedological investigation to characterize these soils during the wet and dry seasons, provide an understanding of fertility constraints, and develop a management plan to improve rice production. Seasonally and permanently flooded soils categories were recognized. Seasonally flooded soils are subjected to drainage and permanent protection from saltwater intrusion. These soils were correlated as Typic Endoaquerts, Typic Endoaquepts, …

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