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Physicochemical Effects On The Abundance And Distribution Of Larval Fishes In The Atchafalaya River Basin, Louisiana, Matthew Aaron Engel
Physicochemical Effects On The Abundance And Distribution Of Larval Fishes In The Atchafalaya River Basin, Louisiana, Matthew Aaron Engel
LSU Master's Theses
The Atchafalaya River Basin (ARB) experiences overbank inundations as springtime temperatures warm that create conditions favorable for bacterial respiration, which results in hypoxic conditions (dissolved oxygen [DO] ≤ 2.0 mg/L). Previous ARB research has shown that pelagic larval fish populations are impacted by hypoxic conditions, and that larvae may use macrophyte beds (e.g., hydrilla Hydrilla verticillata) as DO refugia. I examined the relationship between physicochemistry and the distribution and abundance or larval fishes associated with ARB macrophyte beds during 2001-2002. Larval fishes were collected with light traps at two normoxic and hypoxic sites, and at each site, surface and subsurface …
Tensile Strength And Bonding Characteristics Of Self-Compacting Concrete, Cristian Druta
Tensile Strength And Bonding Characteristics Of Self-Compacting Concrete, Cristian Druta
LSU Master's Theses
Self-compacting concrete, also referred to as self-consolidating concrete, is able to flow and consolidate under its own weight and is deaerated almost completely while flowing in the formwork. It is cohesive enough to fill the spaces of almost any size and shape without segregation or bleeding. This makes SCC particularly useful wherever placing is difficult, such as in heavily-reinforced concrete members or in complicated workforms. The objectives of this research were to compare the Splitting Tensile Strength and Compressive Strength values of self-compacting and normal concrete specimens and to examine the bonding between the coarse aggregate and the cement paste …
Metabolic Aspects Of Oryzanol In Rats, Michelle Smith Gillespie
Metabolic Aspects Of Oryzanol In Rats, Michelle Smith Gillespie
LSU Master's Theses
Using a rat model, this study compared the bioavailability of three forms of oryzanol, a compound extracted from rice bran oil that has been associated with improved cholesterol levels. Various methods of extracting lipids from serum and liver were explored to determine oryzanol absorption. Cholesterol levels were obtained via enzymatic colorimetric assay and GCMS. Sprague Dawley retired female breeder rats were sustained for 11 weeks on a cholesterol-free diet to which either no oryzanol was added (n = 19) or 2.8 g/kg of oryzanol was added as: 7% oryzanol rice bran oil (RO, n = 8), crystalline oryzanol (CO, n …
Making The Internet Transition: Assessing The Needs Of Secondary Public School Teachers, Nancy Matt
Making The Internet Transition: Assessing The Needs Of Secondary Public School Teachers, Nancy Matt
LSU Master's Theses
Since the introduction of Internet technology in public schools, teachers who are enthusiastic about computer and Internet training have responded to school districts’ offers of off-site training and take part in grant-based programs to promote the use of technology. The first phase of promotion by attraction has been completed. The remaining teachers are not as enthusiastic and look to the school district to provide them with the type of training they require in order to incorporate Internet technology. Access to the Internet is just one of many elements involved in the overall problems that public high school teachers face using …
Times They Are A' Changin': Effects Of Social Structural Positions And Network Characteristics On Changes In Gender-Role Attitudes Among Returning Women Students, Rachel Maher Reynolds
Times They Are A' Changin': Effects Of Social Structural Positions And Network Characteristics On Changes In Gender-Role Attitudes Among Returning Women Students, Rachel Maher Reynolds
LSU Master's Theses
Since the 1960’s men and women’s gender-role attitudes have become increasingly nontraditional. The shift in attitudes has been attributed greatly to changes in women’s educational attainment and labor force participation. This thesis builds upon this line of work by exploring the effects of returning to school on women’s gender-role attitudes. Specifically, I use quantitative and qualitative data collected on 44 married mothers across a ten-year period beginning with their return to school in the early 1980s, focusing on the way in which women’s gender-role attitudes were affected by their increased educational attainment and their post-enrollment labor force experiences. As part …
Assessing Sample Bias And Establishing Standardized Procedures For Weighting And Expansion Of Travel Survey Data, Fahmida Nilufar
Assessing Sample Bias And Establishing Standardized Procedures For Weighting And Expansion Of Travel Survey Data, Fahmida Nilufar
LSU Master's Theses
Recent household travel surveys are encountering problems with non-response, non-coverage, non-reporting, and even incorrect or incomplete reporting of trips. In addition, data from survey samples are affected by the social, and economic conditions of the respondents, as well as the survey instrument used to collect the data. As a result, household travel survey data are invariably associated with some level of bias. These threats to the integrity of the data are often ignored while analyzing the sample survey data. However, considering the importance of information derived from such surveys, it is necessary that the survey must provide an accurate reflection …
Systematics Of The Western Lyresnake (Trimorphodon Biscutatus) Complex: Implications For North And Middle American Aridland Biogeography, Thomas James Devitt
Systematics Of The Western Lyresnake (Trimorphodon Biscutatus) Complex: Implications For North And Middle American Aridland Biogeography, Thomas James Devitt
LSU Master's Theses
The Western Lyresnake (Trimorphodon biscutatus) is found generally from the desert southwestern United States southward along the pacific lowland versant of Mexico to northwestern Costa Rica. This species exhibits substantial geographic variation in size, squamation, and color pattern across its range, and as such has had an unstable taxonomic history. I investigated populations of T. biscutatus representing currently and formerly recognized forms using both morphological and molecular methods to infer the evolutionary history of this widespread, polytypic taxon. Multivariate statistical analyses (principal components and discriminant analysis) of morphological data (432 specimens, 33 characters) yielded six statistically significantly different groups, consistent …
A Novel Hydrogen And Oxygen Generation System, Zhiyong Peng
A Novel Hydrogen And Oxygen Generation System, Zhiyong Peng
LSU Master's Theses
This study examined the three phases of the sorption-enhanced SMR process for H2 production: production of low-CO hydrogen using the standard Ni-based reforming catalyst and high purity CaO sorbent precursor, evaluation of combined reforming catalyst-sorbent samples supplied by TDA, and an Aspen simulation study of the process for simultaneous production of H2 and O2. The production of low-CO (<20ppmv) hydrogen was studied using the single-step sorption-enhanced steam methane reforming process. The effects of temperature, volumetric feed rate, and feed gas composition on the purity of H2 and the content of CO were investigated. The feasibility of producing 95+% H2 with CO content of less than 20ppmv was experimentally proven in a test at 480¡ãC and 5 atm using a commercial Ni-based catalyst and the calcium-based CO2 sorbent. The feed gas contained 20% CH4 and 80% H2O, while the product gas contained 97.8% H2 and 17 ppmv CO. With this low CO concentration, the product can be used in a proton exchange membrane (PEM) fuel cell without further purification. The catalyst-sorbent samples from TDA Research Inc. were extensively studied and evaluated with respect to their performance in the steam-reforming reaction using both the fixed-bed reactor system and TGA. The activity of the catalyst samples having different compositions was examined and compared at different temperatures and space velocities using a feed gas containing 11.1% CH4 with a steam-to-carbon (S/C) ratio of 3.0. The sorption activity and durability was also examined in the TGA system. The overall hydrogen and oxygen co-production process was studied and evaluated using the Aspen Plus simulator. Material and energy balance calculations showed that this system can produce 99+% purity hydrogen and oxygen simultaneously with efficient energy integration. This process is balanced on power consumption and generation, so no external power is required.
Perspectives On Comparative Literature, Alexandru Boldor
Perspectives On Comparative Literature, Alexandru Boldor
LSU Master's Theses
The main objective of this dissertation was to provide researchers interested in the history and evolution of "comparative literature" with a collection of references delineating the evolution of the concept and the development of academic departments dedicated to its study. The paper includes a first section describing the main issues contributing to the "identity crisis" with which studies and departments defining themselves as "comparative" were consistently confronted ever since the term was coined. The "preliminary concepts" section offers an overview of the elements that usually confer a "comparative" quality to a literary study, such as interdisciplinarity and multiculturalism, together with …
Traffic Engineering In Multiprotocol Label Switching Networks, Chung-Yu Wei
Traffic Engineering In Multiprotocol Label Switching Networks, Chung-Yu Wei
LSU Master's Theses
The goal of Traffic Engineering is to optimize the resource utilization and increase the network performance. Constraint-based routing has been proposed as an networks effective approach to implement traffic engineering in Multiprotocol Label Switching. In this thesis, we review several algorithms on constraint-based routing from the literature and point out their advantages and disadvantages. We then propose several algorithms to overcome some of the shortcomings of these approaches. Our algorithms are specifically suitable for large densely connected networks supporting both Quality of Service traffic and the Best Effort traffic. In large networks the size of the MPLS label space in …
No Child Left Behind And The Louisiana School Accountability System: A Comparative Study Of Accountability Systems, Rani Coleman
No Child Left Behind And The Louisiana School Accountability System: A Comparative Study Of Accountability Systems, Rani Coleman
LSU Master's Theses
In the educational field, accountability is one of the key issues in the media. No Child Left Behind (NCLB) has made a definite impact in the political and social realm of society. However, many people do not understand what it fully means to education on all levels. The aim of this thesis is to compare and contrast the Louisiana School Accountability System with the new Federal government's No Child Left Behind. Of key interest in this comparative study is: long-term goals, flagging methods, disaggregation of subgroups, starting out - index/proficiency rate, modification/corrective plans, number of tests, indicators, and high stakes …
Field Validation Of Bentazon Phytoremediation, Sajida Begum
Field Validation Of Bentazon Phytoremediation, Sajida Begum
LSU Master's Theses
Phytoremediation with black willow (Salix nigra) was conducted in 1996 by planting trees at a density of 2000 trees/hectare at BASF Corporation in a shallow groundwater plume containing low levels of bentazon. In this project, the roots, stems,and leaves of the black willow plants were extracted and analyzed to see if bentazon from the ground water was taken up by the plants. Different extraction procedures such as liquid-phase extraction and solid-phase extraction were compared. Final determination using different analytical techniques such as GC-MSD, GC-ECD, and HPLC with UV detection for the isolation and analysis of bentazon residues from the plant …
Temperature Dependent Kinetics Of Biotin Carboxylase, Brett K. Lord
Temperature Dependent Kinetics Of Biotin Carboxylase, Brett K. Lord
LSU Master's Theses
Acetyl-CoA carboxylase catalyzes the first committed step in long chain fatty acid biosynthesis. In Escherichia coli, the enzyme is composed of three distinct protein components: biotin carboxylase, biotin carboxyl carrier protein, and carboxytransferase. The biotin carboxylase component has served for many years as a model for mechanistic studies devoted toward understanding biotin-dependent carboxylases. Studies of the temperature dependence, temperature dependence of the kinetic solvent isotope effect and thermodynamics of biotin carboxylase are reported. Analysis of the van’t Hoff plot in H2O was biphasic showing an apparent transition temperature of 20°C, with corresponding DH° values of –4.55 ± 1.84 kcal/mol below …
Graceful Death: The Use Of Victorian Elements In Grace Episcopal Churchyard, St. Francisville, Louisiana And St. Helena's Churchyard, Beaufort, South Carolina, Marian Patricia Colquette
Graceful Death: The Use Of Victorian Elements In Grace Episcopal Churchyard, St. Francisville, Louisiana And St. Helena's Churchyard, Beaufort, South Carolina, Marian Patricia Colquette
LSU Master's Theses
In 1966 James Deetz and Edwin Dethlefsen illustrated how changes in tombstone iconography could be correlated to the spread of changing Puritan beliefs about death. This thesis addresses the possibilities that the adoption of Victorian tombstone style and iconography can be used to trace the spread of Victorian ideas. The theoretical arguments on funerary behavior and attitudes toward death as well as the development of the Victorian cemetery and its association to the rural cemetery movement are discussed. In addition, Victorian styles in funerary architecture and iconography are defined. As originally addressed, the problem involved establishing that adoption of Victorian …
Design, Development, And Analysis Of A Twin-Fluid Fire Suppression Atomizer And Characterization Of Electrostatically Charged Droplet Sprays, Chad Everett Moore
Design, Development, And Analysis Of A Twin-Fluid Fire Suppression Atomizer And Characterization Of Electrostatically Charged Droplet Sprays, Chad Everett Moore
LSU Master's Theses
A twin-fluid water mist fire suppression atomizer is designed, developed, and analyzed. Of primary interest is the development of a twin-fluid atomizer that produces a large droplet diameter and velocity distribution and also produces a mist with sufficient cone angle to be effective in fire suppression applications. Spray characterization experiments are conducted utilizing Phase Doppler Particle Analysis (PDPA). The effect of atomizer nozzle geometry on internal two-phase flow and resulting spray pattern is investigated. National Fire Protection Association (NFPA) Standard 750 characterization experiments are conducted to verify that the sprays produced by the developed atomizer are classified as a water …
Investigation Of Qualitative Methods For Diagnosis Of Poor Bit Performance Using Surface Drilling Parameters, Arash Aghassi
Investigation Of Qualitative Methods For Diagnosis Of Poor Bit Performance Using Surface Drilling Parameters, Arash Aghassi
LSU Master's Theses
Bit performance in deep shale when using water-based mud is typically poor. This study is part of a larger research project to improve that performance entitled "Automated Rig Controls for Improved Drilling Costs." The objective of the project is diagnosis of changes in drill bit performance to provide a logical basis for automating draw works control, maximizing bit performance, and reducing drilling costs. The specific goal of this study is a means to diagnose bit performance, specifically to identify bit balling and lithology changes, using real-time drilling data. The research began by identifying symptoms relating to specific causes of bit …
Use Of Primary Production By Benthic Invertebrates In A Louisiana Salt-Marsh Food Web, Padma Maddi
Use Of Primary Production By Benthic Invertebrates In A Louisiana Salt-Marsh Food Web, Padma Maddi
LSU Master's Theses
A combination of natural abundances of stable carbon and nitrogen isotopes and tracer-addition experiments were employed to determine the relative contributions of three potential food sources (phytoplankton, benthic microalgae, and Spartina alterniflora) to benthic invertebrate fauna of Louisiana salt marshes. Samples of the major food sources and the consumers were collected quarterly (summer, fall, winter and spring) to analyze the ƒÔ13C and ƒÔ15N ratios. A simultaneous tracer-addition experiment, in which benthic microalgae (BMA) were labeled with NaH13CO3 and 15NH4Cl, was conducted in all quarters to determine the relative importance of the BMA to consumers. Results indicated that the carbon isotopic …
The Metabolizable Energy Value And Physiologic Effects Of Hi-Maize Resistant Starch In Male Rats, Tanya A. Garcia
The Metabolizable Energy Value And Physiologic Effects Of Hi-Maize Resistant Starch In Male Rats, Tanya A. Garcia
LSU Master's Theses
The purpose of this study was to calculate the metabolizable energy value of Hi-Maize® RS (60% amylose), to observe if consumption of RS alters adiposity, and to examine the effects of RS on fermentation and fecal excretion. Eighteen four-week old male Sprague-Dawley rats consumed either a 20% amylose Hi-Maize® RS diet (n=6) or a control diet (baseline group, n=6; control group, n=6). The baseline group was sacrificed at the beginning of the study; the RS and control groups were transferred to metabolic cages and fed the respective diets for the next six weeks. Feces and urine from each individual rat …
Evaluation Of The Profiler As A Tool For Imrt Qa, Manuel Rodriguez
Evaluation Of The Profiler As A Tool For Imrt Qa, Manuel Rodriguez
LSU Master's Theses
The principal goal in this project is to determine if a one-dimensional diode array, the Profiler (Sun Nuclear Corporation), can be used as a tool for intensity modulated radiation therapy quality assurance (QA). A one-dimensional diode array can be used to measure dose and dose profiles for IMRT fields. IMRT fields for real cases at Mary Bird Perkins Cancer Center were used to test the Profiler model 1170 (Sun Nuclear Corporation). The main concern with the Profiler is that there is not central diode in the array. The absorbed dose displayed in the Profiler window is the average of the …
Planting Rate Effects On Sugarcane Yield Trials, Albert Joseph Orgeron
Planting Rate Effects On Sugarcane Yield Trials, Albert Joseph Orgeron
LSU Master's Theses
New varieties are provided to the Louisiana sugarcane industry by researchers at Louisiana State University AgCenter, the United States Department of Agriculture-ARS, and the American Sugar Cane League of the USA, Inc. Currently, Louisiana farmers plant sugarcane at rates ranging from two to five or more whole stalks. A two-stalk planting rate is used to plant all stages of the LSU AgCenter’s sugarcane variety development program. The objective of this study was to determine the effect of planting rate on sugarcane variety trial data and interpretation. A planting rate by variety experiment was conducted at the LSU AgCenter’s Sugar Research …
Gateways Into The Atchafalaya: Developing A Framework For Water-Based Recreation In The Atchafalaya Basin Parishes, Steven Joseph Lumpkin
Gateways Into The Atchafalaya: Developing A Framework For Water-Based Recreation In The Atchafalaya Basin Parishes, Steven Joseph Lumpkin
LSU Master's Theses
The term “gateways” has been used in many contexts as a means of providing entry or connection. Gateways are where people congregate to leave a realm of familiarity to one of uncertainty and adventure. They can also mark the entrance into an area of interest. Gateways may have a significant impact on an individual’s impression of a particular destination. This thesis provides arguments for using boating gateways into the Atchafalaya Basin (AB) region as the basis for a recreational framework that encompasses eight parishes. A common theme that exists in all eight AB parishes is their boat launches. They represent …
Remote Power Delivery And Signal Amplification For Mems Applications, Sunitha Kopparthi
Remote Power Delivery And Signal Amplification For Mems Applications, Sunitha Kopparthi
LSU Master's Theses
Device such as remotely located sensors and bio-implanted devices such as gastric pacer require power for operation. The most commonly used energy source for such devices is a battery cell included in the receiver capsule. Wires can also be used with an external power source but in some applications have serious limitations. This work examines a wireless power transmitter and receiver system to provide power to a remotely located microsystem. Inductive power coupling is the method of choice. For gastric pacer application, external transmitter coil can be worn around the waist as a belt and the receiver coil can be …
Surface Water Pesticide Contamination In The Upper Terrebonne Basin Of Louisiana, John S. Walther
Surface Water Pesticide Contamination In The Upper Terrebonne Basin Of Louisiana, John S. Walther
LSU Master's Theses
Triazine herbicides are the most heavily used pesticides in the United States. Atrazine and Simazine are the primary triazine herbicides used for broadleaf weed control in the production of corn, sugarcane, and sorghum. Recent monitoring studies of surface waters in the Upper Terrebonne Basin of Louisiana indicate elevated amounts of triazines are running off fields and entering drinking water supplies. Atrazine has been classified as a possible carcinogen by the United States Environmental Protection Agency. Recent epidemiological studies have revealed increases in breast cancer and pre-term births following exposure to triazines at levels detected in drinking water. Non-point source pollution …
Field Evaluation Of In-Situ Test Technology For Qc/Qa During Construction Of Pavement Layers And Embankments, Munir Darwish Nazzal
Field Evaluation Of In-Situ Test Technology For Qc/Qa During Construction Of Pavement Layers And Embankments, Munir Darwish Nazzal
LSU Master's Theses
With the coming changes from an empirical to mechanistic-empirical pavement design, it becomes essential to move towards changing the quality control/quality assurance (QC/QA) procedures of compacted materials from a unit weight-based criterion to a stiffness/strength based criterion. The non-destructive in-situ tests such as Geogauge, Dynamic Cone Penetrometer (DCP), and Light Falling Weight Deflectometer (LFWD) can be used as effective tools in the assessment of subsurface conditions and in evaluating the stiffness of pavement materials and embankment. This thesis evaluates the potential use of these three devices to reliably measure the stiffness characteristics of highway materials for possible application in the …
A Proposal For A Spark Park Site Selection Process In East Baton Rouge Parish, James M. Mccord
A Proposal For A Spark Park Site Selection Process In East Baton Rouge Parish, James M. Mccord
LSU Master's Theses
A Proposal for a SPARK Park Site Selection Process in East Baton Rouge Parish is the topic of this study to assist Parish schools and local governmental agencies in creating community parks. The SPARK Park program uses underutilized municipal properties to create community-use parks in lower-income urban areas. SPARK Parks originated in Houston, Texas. The Houston SPARK Park process was adapted for developing a site selection process for East Baton Rouge Parish. East Baton Rouge Parish dedicated their first SPARK Park in 2000. The park was built in an attempt to reduce the Parish’s open space deficit. Many more parks …
The Effects Of Composition And Processing Of Milk On Foam Characteristics As Measured By Steam Frothing, Michael Levy
The Effects Of Composition And Processing Of Milk On Foam Characteristics As Measured By Steam Frothing, Michael Levy
LSU Master's Theses
Steam frothing of milk is required to produce an acceptable foam for many espresso coffee drinks. Specific aspects of composition and processing may affect the foaming properties of milk. The aim of this study was to determine the effect of fat content, heat treatment, free fatty acid addition and storage time on the frothing properties of milk. The four treatments included: fat content (0.08% and 3.25%), pasteurization temperatures (171°F for 15 seconds and 210°F for 45 seconds), pre and post-pasteurization addition of lauric acid solution (0.0% and 2.0% of 0.5 M concentration) and storage time (1 and 10 days). For …
Relative Costs Of Infill Vs. Suburban Residential Developments: A Case Study Of The Greater Baton Rouge Area, John Lawrence Brian
Relative Costs Of Infill Vs. Suburban Residential Developments: A Case Study Of The Greater Baton Rouge Area, John Lawrence Brian
LSU Master's Theses
Driven by the accumulation of vacated buildings along with the need to reconstruct vacant urban areas and neighborhoods, the need to establish infill as the primary means of development in the Baton Rouge Metropolitan area is apparent. As suburban tendencies have increased, the core of our city has diminished. The principles of smart growth and infill development have been created in response these very problems. The methods have proven successful nationwide, but is the process feasible in Baton Rouge area? The answer to this very question goes well beyond yes or no. Many variables must be evaluated; the positives and …
A Comparison Of Microbial Communities In Soil With And Without A Sugarcane Cropping, Carolyn Faye Savario
A Comparison Of Microbial Communities In Soil With And Without A Sugarcane Cropping, Carolyn Faye Savario
LSU Master's Theses
Sugarcane (inter-specific hybrids of Saccharum) is grown largely under long-term monoculture production in Louisiana. This can lead to a complex problem termed "yield decline" that results in poor root health and reduced productive capacity of sugarcane. This problem has been documented to be a limiting factor for sugarcane production in diverse regions, including Louisiana, Hawaii, Jamaica, and Australia. Previous work showed that biological factors affect root health and contribute to yield decline. The objectives of this study were to increase our understanding of microbial communities in sugarcane soils, to determine if there are differences in microbial communities associated with sugarcane …
Interaction Of Fire And Insects In The Restoration And Management Of Longleaf Pine, Tessa Annette Bauman
Interaction Of Fire And Insects In The Restoration And Management Of Longleaf Pine, Tessa Annette Bauman
LSU Master's Theses
The interactions of insects and fire on the health and restoration of longleaf pines in Louisiana were investigated. Insects found to be economically and ecologically important were considered, primarily bark beetles and weevils. First, insect populations in an area of fire exclusion of the Palustris Experimental Forest within the Kisatchie National Forest were quantified using baited flight intercept and pitfall traps. The possible influence of temperature and precipitation on insect abundance also was studied. Insects were most abundant during March and April and with correlating temperatures from 10-20 °C. Precipitation was not found to have an effect on insect abundance. …
Computational Model For Heat Transfer In The Human Eye Using The Finite Element Method, Umit Cicekli
Computational Model For Heat Transfer In The Human Eye Using The Finite Element Method, Umit Cicekli
LSU Master's Theses
In this work a finite element model for the human eye presented. Thermal analysis was done in order to capture the temperature variation in the human eye. The model was created using advance finite element program ABAQUS. In the model each of the eye's component (cornea, sclera, lens, iris, aqueous and vitreous humor) has own material property. Specific boundary conditions were used for the model. The model incorporates the interaction between eyes components. The Comparisons were done with the available experimental results. The results show that there is a temperature variation in the human eye components with the increasing the …