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Modeling The Effect Of Shale Heterogeneities On Hazardous Waste Transport In Deep Well Disposal Systems., Seung-Whee Rhee Jan 1991

Modeling The Effect Of Shale Heterogeneities On Hazardous Waste Transport In Deep Well Disposal Systems., Seung-Whee Rhee

LSU Historical Dissertations and Theses

The transport of hazardous wastes in heterogeneous confining layers was evaluated using numerical simulations. The expected configuration of the confining layers was defined by Monte Carlo techniques assuming a binary random structure composed of pure sand and pure shale zones. Flow and solute transport in the generated configuration was determined via a finite element model. The effective permeability under saturated steady-state flow was dominated by shale permeability for higher shale fractions ($>$0.65) and by sand permeability for lower shale fraction ($<$0.4). The results agreed well with the numerical result of Desbarats (1987) and the analytical results of Dagan (1979). The effective vertical permeabilities were found to be dependent on shale size and anisotropy. Application of the techniques to a well in Jefferson Parish, Louisiana suggested that a mean advective penetration into confining layer using the injection pressure as an upper bound to the driving pressure was only 3m over 10,000 years. Transport calculations assuming a constant pressure driving force over 10,000 years suggested solute transport was controlled by hydrodynamic dispersion (dispersion + diffusion) rather than advection for higher shale fractions. Transport calculations assuming active injection for only the first 100 years suggested solute transport was controlled by diffusion for higher shale fraction. Buoyancy effects associated with salinity and temperature variations were negligible for solute transport through confining layers with a shale permeability less than 0.01 md. The results of solute transport of hazardous wastes in heterogeneous confining layers suggested that confining layers greater than 300 ft in thickness with shale fractions of greater than 0.65 and shale permeabilities of less than 0.01 md would be expected to contain injected wastes for 10,000 years.

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Quantal Description Of Atomic Diamagnetism: The Quasi-Landau Resonances., Qiaoling Wang Jan 1991

Quantal Description Of Atomic Diamagnetism: The Quasi-Landau Resonances., Qiaoling Wang

LSU Historical Dissertations and Theses

We describe atomic hydrogen diamagnetism within the framework of nonrelativistic quantum mechanics. Our theoretical studies have used three descriptions: an adiabatic description, a multichannel quantum defect theory (MQDT) description using an ab initio R-matrix approach, and a model description. The analysis has conclusively demonstrated that the diamagnetic spectrum can be viewed as a perturbed Rydberg spectrum. The adiabatic analysis provides a crude but useful picture to see the overall channel structure and the nature of the perturbing configurations, where the quasi-Landau resonances are the lowest states in each Landau channel which will perturb high Rydberg states in lower Landau channels …

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Factors Responsible For The Differential Growth Of Brucella Abortus In Bovine Trophoblasts., Luis Ernesto Samartino Jan 1991

Factors Responsible For The Differential Growth Of Brucella Abortus In Bovine Trophoblasts., Luis Ernesto Samartino

LSU Historical Dissertations and Theses

The interactions of bovine chorionic membrane explants (CAMs) as well as three different bovine trophoblastic cell lines with Brucella abortus were evaluated. The ability of B. abortus to infect and grow within the cells of these CAMs and within these cell lines was measured. In addition, prostanoid and hormone production by the trophoblastic cells after infection with B. abortus was measured. Internalization of B. abortus within the cells of CAMs derived from placentas from both 3-month-gravid cows and 7-month-gravid cows was similar. By 24 hours post-inoculation B. abortus replication in 7-months-derived CAMs was significantly greater than the replication occurring in …

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A Reading Of "A Good Man Is Hard To Find" And "A Curtain Of Green": The Influence Of Parable On Flannery O'Connor And Eudora Welty., Allison Carol Chestnut Jan 1991

A Reading Of "A Good Man Is Hard To Find" And "A Curtain Of Green": The Influence Of Parable On Flannery O'Connor And Eudora Welty., Allison Carol Chestnut

LSU Historical Dissertations and Theses

A Good Man is Hard to Find by Flannery O'Connor and A Curtain of Green by Eudora Welty are short story cycles harmonized by their marked imitation of the style and structure of parable. O'Connor added stories after initially sending the collection to the publisher and then rearranged them accordingly; her work represents a completed cycle. Welty's collection, published in an order different from their individual publications and their original placement in an early typescript, is an arranged cycle. Moreover, parabolic style and structure unify each cycle. A parable typically is a brief story told in the past tense, usually …

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A Comparison Of Models Of Parole Outcome., Larry Allen Gould Jan 1991

A Comparison Of Models Of Parole Outcome., Larry Allen Gould

LSU Historical Dissertations and Theses

The focus of this dissertation is on the criteria which parole boards use as the basis for their decision to release an offender on to parole. The literature strongly suggests that there are some objective measures of dangerousness on parole, such as the Salient Factor Score; however, the literature also indicates that parole boards use a great deal of subjective evaluation in making their decisions. Many of the subjective concepts used by parole boards can be measured objectively through a grounding in criminological theory. A model of parole outcome prediction which measures objectively several of the previously subjective variables, including …

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Radial Flow Chromatography In Compressed Pancake-Shaped Beds., Brian Keith Heft Jan 1991

Radial Flow Chromatography In Compressed Pancake-Shaped Beds., Brian Keith Heft

LSU Historical Dissertations and Theses

The separation of a methane/n-butane mixture was demonstrated using radial flow through compressed, pancake-shaped beds of fine alumina powder. The compacted stationary phase improved performance relative to an uncompressed sorbent by assuring flow uniformity through the bed, reducing band-broadening and tailing (by decreasing interstitial hold-up) and decreasing effective plate height (through an increase in the capacity ratio of the chromatograph). Dispersion was identified as the key dissipative effect in the prototype radial flow adsorber. An exact analytical solution derived for the transport equations describing such a device compared favorably with experimental data. The dispersion coefficients were found to be strong …

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Process And Product In Prereferral Intervention: A Study Of Planning, Integrity, And Outcome., William Treen Mckee Jan 1991

Process And Product In Prereferral Intervention: A Study Of Planning, Integrity, And Outcome., William Treen Mckee

LSU Historical Dissertations and Theses

The purpose of the study was to obtain data on the intervention planning processes engaged in by prereferral intervention teams, primarily, through a focus on the verbal processes of teacher and committee team member interactions. Teacher and committee participation in the prereferral intervention planning process was operationalized in terms of the frequency of teacher and committee verbal interactions, in terms of numbers of questions, responses, and initiated comments made by each, as well as teacher and committee speaking time. Results of analysis of these data revealed that teachers asked few questions and initiated relatively few comments in comparison with their …

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Fluorescence Studies Of Phosphofructokinase From Bacillus Stearothermophilus., Soon-Jong Kim Jan 1991

Fluorescence Studies Of Phosphofructokinase From Bacillus Stearothermophilus., Soon-Jong Kim

LSU Historical Dissertations and Theses

Phosphofructokinase catalyzes the phosphorylation of $\beta$-fructose 6-phosphate (Fru-6-P) to $\beta$-fructose 1,6-bisphosphate. The first part of this dissertation shows that phosphofructokinase from Bacillus stearothermophilus (Bs-PFK) is a tetramer in the region pH 4.5-9.5 unlike the enzymes from mammalian sources, which exhibit association-dissociation reactions. Circular dichroism, steady-state fluorescence, and static and dynamic light scattering were used to study the conformational properties of the enzyme. Inactivation of the enzyme below pH 7.0 is not due to dissociation of the tetramer to dimers or monomers. In the second part, the fluorescence of the lone tryptophan was investigated by steady-state and time-resolved techniques. The decay …

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The Effects Of Community Building Group Process Intervention Technique On Reading Performance Among Inmates In A Medium Security Prison., Robert Earl Roberts Jan 1991

The Effects Of Community Building Group Process Intervention Technique On Reading Performance Among Inmates In A Medium Security Prison., Robert Earl Roberts

LSU Historical Dissertations and Theses

A substantial body of research has shown that when students work together in groups and are rewarded based on the learning of all the groups members, they achieve consistently more than students who are in traditionally taught classes. The goal of this project was to test the effects of an innovative group process intervention technique on reading performance among a population of incarcerated adult males in a medium security prison in Louisiana. This model, referred to as "Community Building" (CBGP), has been utilized among other ways as an intervention technique to resolve organizational/personnel problems in private, business, university, and government …

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The Effects Of Situational Access To Firearms On Sensitivity To Risk Of Criminal Victimization: A Contextual Analysis., Roberta Loupe St. Pierre Jan 1991

The Effects Of Situational Access To Firearms On Sensitivity To Risk Of Criminal Victimization: A Contextual Analysis., Roberta Loupe St. Pierre

LSU Historical Dissertations and Theses

The focus of this research is on the association of the availability of firearms for protection and fear of crime. More specifically, the study explores the relationship of firearms to persons' sensitivity to perceived risk of criminal victimization. The data used were drawn from a state-wide survey of Louisiana residents conducted in 1984. The research was directed by the long-standing inability of researchers to identify any relationship between guns and fear of crime, although it has long been assumed that such a relationship does exist. This study used the innovative strategy of examining fear of crime levels in their relationship …

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A Role Theoretical Model Of Consumer Satisfaction With Professional Services., Teri Root Shaffer Jan 1991

A Role Theoretical Model Of Consumer Satisfaction With Professional Services., Teri Root Shaffer

LSU Historical Dissertations and Theses

The objectives of the dissertation were: (1) examine the relative influence of expectations, performance, and disconfirmation on satisfaction with professional services; (2) assess the relative influence of role based and non-role based dimensions of a professional service on satisfaction; (3) conceptualize and test the influence of consumer role constructs on satisfaction with professional services; and (4) examine the influence of involvement on satisfaction formation for professional services. Prior to seeing their doctor, one hundred and thirty-one orthopedic patients completed a questionnaire concerning their expectations for their own role, the doctor's role, the staff's role, and access mechanisms (non-role based dimensions …

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Atoms And Di-Atoms In Intense Laser Fields., Muhammad Raza Saeed Jan 1991

Atoms And Di-Atoms In Intense Laser Fields., Muhammad Raza Saeed

LSU Historical Dissertations and Theses

A series of experimental studies was carried out on diatomic molecules to understand how they interact with intense laser fields. These studies have mainly consisted of multiple photon excitation, ionization and dissociation of hydrogen, oxygen, and chlorine molecules using time of flight electron and ion spectroscopy. I took advantage of the similarities and differences in the molecular structure of these molecules in order to investigate whether different molecules interact differently with the applied fields. Clear experimental evidence of molecular Bond Softening as an intensity dependent variation in the vibrational distribution of molecular ions is being reported for the first time …

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A Study Of Metacognitive Skill As Influenced By Expressive Writing In College Introductory Algebra Classes., Naomi Barbara R Allen Jan 1991

A Study Of Metacognitive Skill As Influenced By Expressive Writing In College Introductory Algebra Classes., Naomi Barbara R Allen

LSU Historical Dissertations and Theses

The quality of mathematics education has become a major concern to mathematics educators. As a result, increased attention is being given to identifying the abilities that underlie competent performance. An outcome of this effort is an increasing belief that the development of metacognitive skills is an essential component of proficient mathematics performance. Writing, because it promotes reflective thinking, is believed to be the vehicle for this development. Writing in the mathematics classroom has previously received anecdotal support for its benefits to the learner and to the instructor, and limited quantitative benefits in problem-solving ability toward mathematics. This study examined the …

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Timed Daily Thermopulses Alter The Circadian Hormonal Regulation Of Glucose And Lipid Metabolism., Christopher Joseph De Souza Jan 1991

Timed Daily Thermopulses Alter The Circadian Hormonal Regulation Of Glucose And Lipid Metabolism., Christopher Joseph De Souza

LSU Historical Dissertations and Theses

Studies were made in Syrian hamsters and Holtzman rats to examine roles for circadian rhythms in the control of body fats stores. Baseline and circadian rhythms of plasma insulin varied seasonally in the Syrian hamster. Baseline concentrations of the hormone were almost 4 times greater in scotosensitive female hamsters held on short daily photoperiods when they were fat than in lean animals at other seasons and other photoperiodic schedules. Additionally, plasma insulin levels in fat hamsters, but not in lean animals, peaked at light onset when lipogenic responsiveness to insulin is greatest. The circadian rhythms of plasma insulin are not …

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Ruminal Distribution And Utilization Of Zinc And Magnesium As Influenced By Dietary Source And Energy Level., Donald Wayne Kennedy Jan 1991

Ruminal Distribution And Utilization Of Zinc And Magnesium As Influenced By Dietary Source And Energy Level., Donald Wayne Kennedy

LSU Historical Dissertations and Theses

Steers fed a conventional diet were utilized to determine the effects of various Zn supplements on ruminal distribution of Zn. Treatments consisted of a basal (B) diet (no Zn supplementation) and B supplemented with equal parts of Zn from either a polysaccharide complex of Zn (PC-Zn) or zinc oxide (ZnO). Samples were fractionated into four fractions: a cell-free fraction, a particulate fraction and two microbial fractions. After PC-Zn or ZnO were dosed intraruminally, relative distribution of Zn from each Zn source within each fraction was evaluated up to 8 h postdosing. Cannulated growing lambs were used to study the effects …

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Ecology Of Wintering Redheads (Aythya Americana) On The Lower Laguna Madre, Texas., Christine Anne Mitchell Jan 1991

Ecology Of Wintering Redheads (Aythya Americana) On The Lower Laguna Madre, Texas., Christine Anne Mitchell

LSU Historical Dissertations and Theses

Data on behavior, distribution, and food and habitat requirements of wintering redhead ducks (Aythya americana) were collected during 2.5 winters on the lower Laguna Madre, Texas, between 1987 and 1989. Migrating redheads began arriving on the lower Laguna Madre with frontal passages in early October. They initially congregated in the central portion of the lagoon, and the majority remained there through the winter. As winter progressed, flocks dispersed to other parts of the Laguna Madre. Ninety-five percent of redhead flocks were above stands of monotypic shoalgrass (Halodule wrightii) vegetation, their primary food source. Redheads fed intermittently throughout the day; most …

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The Impact Of Latin American Debt Crisis On U.S., U.K., And Canadian Bank Stocks., Subbarao Venkata Jayanti Jan 1991

The Impact Of Latin American Debt Crisis On U.S., U.K., And Canadian Bank Stocks., Subbarao Venkata Jayanti

LSU Historical Dissertations and Theses

The 1980s have been a decade of crisis for banks engaged in international lending. This dissertation examines the impact of twelve events related to the Latin American debt crisis on the market value of the U.S., U.K., and Canadian bank stocks. The existing literature is extended in several directions. First, different types of events and several events of the same type are analyzed to enhance the generality of the conclusions. Second, a general theoretical framework involving two testable hypotheses is utilized to interpret the economic significance of the events. Third, the capital regulation hypothesis is tested extensively and it helped …

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An Analysis Of The Characterizations Of Aida And Amneris., Myrtle Yvette Mcdaniel Jan 1991

An Analysis Of The Characterizations Of Aida And Amneris., Myrtle Yvette Mcdaniel

LSU Historical Dissertations and Theses

Giuseppe Verdi's Aida has been well received by audiences since its inception. The plot of the opera centers around the relationships among Aida, her antagonist Amneris, and Radames. The two women display similar characteristics that provide not only the nucleus of their unique entities, but the themes around which the drama is constructed. The purpose of this analysis is to identify, contrast and compare points of characterization that define Aida and Amneris. These characteristics are traced from the original story by Auguste Mariette through three stages of development by Verdi: preversification, versification, and production. Chapter One begins with a brief …

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An Adaptive Differencing Scheme For Elliptic Flows., Therese Estelle Rhodes Jan 1991

An Adaptive Differencing Scheme For Elliptic Flows., Therese Estelle Rhodes

LSU Historical Dissertations and Theses

This thesis deals with the formulation of a computationally efficient multiple-grid adaptive differencing (MAD) scheme for two-dimensional elliptic flow and heat transfer problems. This algorithm equidistributes a measure of the error by using higher order differencing schemes locally in adaptively determined high error-estimate regions. The third-order accurate QUICK scheme is used in regions of high error estimate which are dynamically flagged on the basis of a preliminary first order upwind solution. Boundary conditions for the flagged regions are taken from the preliminary upwind solution. Multigrid type calculations are performed. Three multiple-grid schemes are developed. In the first scheme, MAD1-WFDS, the …

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An Analysis Of Sequential Patterns Of Instruction In Piano Lessons., Donald Ray Speer Jan 1991

An Analysis Of Sequential Patterns Of Instruction In Piano Lessons., Donald Ray Speer

LSU Historical Dissertations and Theses

The purpose of this study was to investigate verbal behaviors of independent piano teachers in the setting of the private piano lesson. Twenty-five piano teachers from southeast Louisiana participated in the study. Teachers recorded the individual lessons of two students on audiotape. Verbatim transcripts were developed from a total of 47 recorded lessons. Transcripts were coded, identifying verbal behaviors with regard to components of sequential patterns established by Yarbrough and Price (1981, 1989). Verbal behaviors were analyzed for time spent in the categories of teacher presentation, student participation, and teacher reinforcement. Frequencies were obtained for the number of complete/correct, complete/incorrect, …

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An Investigation Of The Laryngeal System As The Resonance Source Of The Singer's Formant., Rebecca Finley Detweiler Jan 1991

An Investigation Of The Laryngeal System As The Resonance Source Of The Singer's Formant., Rebecca Finley Detweiler

LSU Historical Dissertations and Theses

Since its introduction in 1974, Johan Sundberg's model of the laryngeal system as the resonance source of the singer's formant (Fs) has gained wide acceptance. There have heretofore been no studies directly testing its validity in vivo. The purpose of this study was to undertake a direct test of that hypothesis, utilizing as subjects professional male singers trained in the western Classical tradition. The vocal behaviors of three trained singer-subjects were evaluated during modal and pulse register phonation via magnetic resonance imaging (M.R.I.), strobolaryngoscopy, and acoustical analysis. Dr. Sundberg's hypothesis rests upon two premises: (1) that the laryngeal system is …

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Statistical Sophistication Of Research In Vocational Education., Chi Zhang Jan 1991

Statistical Sophistication Of Research In Vocational Education., Chi Zhang

LSU Historical Dissertations and Theses

The purpose of this study was to determine the status of, and changes in, the statistical sophistication of research in vocational education in the 1980s. The study also explored relationships among statistical sophistication, problem area studied, and methodological strategy used in vocational education research. Data collected were obtained from 118 quantitative research reports randomly selected from the Journal of Vocational Education Research, the Journal of Agricultural Education, the Journal of Industrial Teacher Education, and the Journal of Vocational Home Economics Education published in the early (1980-1983) and the late 1980s (1986-89). The researcher developed instrument used in this study consisted …

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In Vitro Studies On Cigarette Smoke-Mediated Damage To Human Alpha-1-Proteinase Inhibitor., Mark Dennis Evans Jan 1991

In Vitro Studies On Cigarette Smoke-Mediated Damage To Human Alpha-1-Proteinase Inhibitor., Mark Dennis Evans

LSU Historical Dissertations and Theses

The effect, in vitro, of water soluble components of the particulate phase of cigarette smoke on the elastase inhibitory capacity (EIC) of human alpha-1-proteinase inhibitor ($\alpha\sb1$PI) is studied. Basic features of aqueous cigarette tar extract-mediated damage to $\alpha\sb1$PI are presented, as are mechanistic studies addressing the identities of damaging species and the nature of damage to $\alpha\sb1$PI. Aqueous cigarette tar extract (ACT) causes a slow loss of EIC, and retains this $\alpha\sb1$ PI damaging ability for hours. The damage to $\alpha\sb1$PI by ACT is dependent on its hydrogen peroxide content. Hydroxyl radicals or hypervalent metal species in the homogeneous phase …

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A Multidimensional Career Commitment Measure (Mccm) Gauging Motivation To Work In One's Career Field., Kerry D. Carson Jan 1991

A Multidimensional Career Commitment Measure (Mccm) Gauging Motivation To Work In One's Career Field., Kerry D. Carson

LSU Historical Dissertations and Theses

Past career commitment measures have been redundant with other work commitment measures or have been narrowly defined as professionalism. Blau's (1985) definition of career commitment as one's attitude towards one's vocation seems to most closely represent this construct. However, his measure has several problems including construct overlap with career withdrawal intentions. Because of a developmental lag in the career focus domain due to lack of established measures, the reported research constructed and tested a theoretically based measure of career commitment. Development of a new career commitment measure was based on London's (1983) theory of career motivation consisting of three theoretical …

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An Investigation Of The Determinants Of The Municipal Decision To Privatize Residential Sanitation Collection., Richard C. Brooks Jan 1991

An Investigation Of The Determinants Of The Municipal Decision To Privatize Residential Sanitation Collection., Richard C. Brooks

LSU Historical Dissertations and Theses

The Governmental Accounting Standards Board (GASB) Concepts Statement No. 1, Objectives of Financial Reporting states that (GASB 1987, 27) "Financial reporting should assist in fulfilling government's duty to be publicly accountable and should enable users to assess that accountability." Government accountability requires that public officials answer to the citizenry. Further, accountability rests on the notion that the citizenry has a "right to know" (GASB 1987, 21). Therefore, according to GASB Concepts Statement No. 1, municipal accounting data should reflect public resource allocation decisions made by government officials. This study investigates the usefulness of municipal accounting data for modeling a particular …

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An Investigation Of The Relationship Between Input Type And Output Modification In English As A Second Language., Doris M. V Macdonald Jan 1991

An Investigation Of The Relationship Between Input Type And Output Modification In English As A Second Language., Doris M. V Macdonald

LSU Historical Dissertations and Theses

Proposals regarding the beneficial effects of elements of modified interaction such as clarification requests and confirmation checks on SLA have been taken up by a number of researchers who have found evidence for their existence in discourse involving NNSs. These investigators have assumed that the presence of such interactional features are beneficial to language learning, yet there is little empirical evidence to support a causal relationship between the presence of these discourse features and change in the performance of the learner toward target-language forms. Furthermore, the potential benefits of modified interactions have not been evaluated against other classroom practices. This …

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Changing Eyes: American Culture And The Photographic Image, 1918-1941., Melissa A. Mceuen Jan 1991

Changing Eyes: American Culture And The Photographic Image, 1918-1941., Melissa A. Mceuen

LSU Historical Dissertations and Theses

From 1918 to 1941, fast-paced changes and far-reaching crises occurred in all realms of American life--social, economic, political, cultural, and intellectual. Evidence of the culture's preoccupations showed up not only in written, but also in visual sources. Photographs helped to reveal the values of American culture, and did so with increasing frequency as the photographic process was further improved. Each visual image bore the marks of its culture, yet none provided a completely objective look at reality. For every picture was the product of the personality standing behind the camera. This study examines both the lives and the photographs of …

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Acoustic Topology Of Infant Proto-Syllables., James Robert Piroli Jan 1991

Acoustic Topology Of Infant Proto-Syllables., James Robert Piroli

LSU Historical Dissertations and Theses

A corpus of CV-like proto-syllables was obtained from the archival recordings of three first-born infants, which were made in conjunction with earlier research on the acoustic and interactive aspects of infant language acquisition. Tokens were limited to proto-syllables with perceptual evidence of stop-like or glide-like qualities and an identifiable vowel. Following A/D sampling, measures of developmental change were made including F1/F2 steady states, transition durations, CV durations, maximum F2 velocities, F2 onset, fundamental frequency, shimmer, time-to-peak amplitude velocity, and time-to-peak F2 velocity within the transition. Contrary to expectations, the orderliness of the infant protosyllables was remarkable with few acoustic events …

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A Study Of The Effects Of Prediction Activities On Instructional Outcomes In High School Genetics., Anne Spratlan Sinclair Jan 1991

A Study Of The Effects Of Prediction Activities On Instructional Outcomes In High School Genetics., Anne Spratlan Sinclair

LSU Historical Dissertations and Theses

The purpose of this study was to examine the instructional effects of incorporating prediction activities in a high school biology genetics curriculum. Criteria for instructional effectiveness included enhanced levels of classroom discussion and interaction, improved subject-related attitude, higher achievement motivation, and greater mastery of genetics concepts. Genetics was chosen as the domain of research because of the multiple variables operating which make it amenable to the making of predictions. Four experienced high school biology teachers taught an experimental and a control class. Students in the experimental classes made written predictions using researcher-developed prediction activities as an introduction to 19 genetics …

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Environmental Factors And Production Characteristics Affecting The Culture Of Red Drum, Sciaenops Ocellatus., Rowland Glenn Thomas Jan 1991

Environmental Factors And Production Characteristics Affecting The Culture Of Red Drum, Sciaenops Ocellatus., Rowland Glenn Thomas

LSU Historical Dissertations and Theses

Experiments with red drum, Sciaenops ocellatus, were conducted to assess environmental requirements and culture characteristics. Pond trials were used to evaluate the effects of salinity, chloride source, predator control, acclimation procedure, stocking density, and size at stocking on production. Survival in individual ponds ranged from 0-92%; average daily weight gain from 0.46-2.22g; and feed conversion ratio from 2.30-4.90. Survival, growth, and feed conversion ratio did not differ significantly between equivalent treatments in saltwater and freshwater ponds. The minimum chloride concentration necessary for acceptable production of red drum in freshwater ponds (250-300 mg/l) was at least 100% higher than the concentrations …

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