Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- 15N isotope pairing technique (1)
- 4DCT (1)
- Adaptive capacity (1)
- Age (1)
- Air cavity (1)
-
- Alcohol Precipitation (1)
- Alkaline phosphatase (1)
- Alongshore and cross-shore wind forcings (1)
- Analytical ultracentrifugation (1)
- Antarctic Peninsula (1)
- Anti-obesity (1)
- Antifungal (1)
- Antioxidant (1)
- Arsenic (1)
- Asphalt cement (1)
- Avulsion (1)
- Barataria Basin (1)
- Barriers to certification (1)
- Basal melting (1)
- Basic Agrarian Law (1)
- Bay-shelf exchange (1)
- Biomonitoring (1)
- Boosted regression tree (1)
- Bottomland hardwood forest (1)
- Breast cancer (1)
- Breeding habitat (1)
- Breton Sound (1)
- Broadband (1)
- C14 (1)
- CDOM absorption (1)
Articles 1 - 30 of 52
Full-Text Articles in Entire DC Network
Source(S) Of Salinity In The Mississippi River Alluvial Aquifer, Iberville Parish, Louisiana, Stephanie Erin Welch
Source(S) Of Salinity In The Mississippi River Alluvial Aquifer, Iberville Parish, Louisiana, Stephanie Erin Welch
LSU Master's Theses
The Mississippi River Alluvial Aquifer extends from Southern Illinois to the mouth of the Mississippi and is comprised of fluvial sands and gravels of Late Pleistocene age. Several areas of the aquifer in Arkansas, Mississippi, and Louisiana are affected by elevated levels of salinity. One such area occurs in Iberville Parish, LA, where the aquifer is 150-240 m in thickness and is capped by 23-38 m of clay. Recharge of the aquifer from the Mississippi River on the east is fresh, but salinity is high in the western portions of the aquifer and chloride levels are as high as 1,000 …
Certification: Implications For Sustainable Forest Management And Timber Export Trade In Ghana, Abraham Baffoe
Certification: Implications For Sustainable Forest Management And Timber Export Trade In Ghana, Abraham Baffoe
LSU Master's Theses
Forestry is a major contributor to the Ghanaian economy and has the potential to increase its contribution if a number of challenges are overcome. Over the past 15 years, Ghana has modified its forest policies, laws, and regulations, but still faces serious challenges with illegal logging and unsustainable forest management. At the same time, Ghana’s major wood product trading partner, the European Union (EU), is requesting that Ghana, under the Voluntary Partnership Agreement (VPA), ensures that wood products from Ghana to the EU are legally produced. Additionally, several EU wood product importers have requested their suppliers in Ghana to meet …
Comparisons Of Boosted Regression Tree, Glm And Gam Performance In The Standardization Of Yellowfin Tuna Catch-Rate Data From The Gulf Of Mexico Lonline [Sic] Fishery, Shane Abeare
LSU Master's Theses
Recent advances in statistical understanding have focused fisheries research attention on addressing the theoretical and statistical issues encountered in standardizing catch-rate data. Similarly, the present study evaluates the performance of boosted regression trees (BRT), the product of recent progress in machine learning technology, as a potential tool for catch-rate standardization. The BRT method provides a number of advantages over the traditional GLM and GAM approaches including, but not limited to: robust parameter estimates as a result of the integrated stochastic gradient boosting algorithm; model structure learned from data and not determined a priori, thereby avoiding assumptions required for model specification; …
Do Laminated Sediment-Gravity-Flow Deposits On The Antarctic Peninsula Continental Shelf Record Ice Sheet Grounding Events?, Vincent Clyde Adams
Do Laminated Sediment-Gravity-Flow Deposits On The Antarctic Peninsula Continental Shelf Record Ice Sheet Grounding Events?, Vincent Clyde Adams
LSU Master's Theses
Barker and Camerlenghi (2002) proposed that drifts on the continental rise of the Antarctic Peninsula may record a high-resolution record of ice-sheet expansions on the adjacent continental shelf. In their view, laminated sediments were deposited during glacial periods, whereas during interglacial periods, sediment supply to drifts was negligible. As a consequence of low sediment supply, the tops of laminated sequences were bioturbated. Therefore, a bioturbated-laiminated couplet should represent a complete glacial cycle. Bioturbated and laminated (B-L) sediment couplets were compiled from cores at two drift sites obtained from Ocean Drilling Program (ODP) Leg 178 Sites 1095, 1096, and 1101. If …
Modeling Gag Grouper (Mycteroperca Microlepis) In The Gulf Of Mexico: Exploring The Impact Of Marine Reserves On The Population Dynamics Of A Protogynous Grouper, Robert D. Ellis
LSU Master's Theses
The gag grouper (Mycteroperca microlepis) population in the Gulf of Mexico supports both a commercial and recreational fishery but has experienced a decrease in the male to female sex ratio over the past thirty years. Protogynous fish populations naturally have a smaller male to female ratio than gonochoristic fish populations; however the decline in the gag population is such that sperm limitation may be occurring. In an effort to correct the decline in sex ratio, fishery managers have recently implemented two marine reserves designed specifically to protect gag spawning aggregations. Results from two population models (an age-structured model and an …
Environmental Influences On The Mobility And Speciation Of Arsenic In The Geothermal Waters Of El Tatio Geyser Field, Chile, Lindsey R. Johnson
Environmental Influences On The Mobility And Speciation Of Arsenic In The Geothermal Waters Of El Tatio Geyser Field, Chile, Lindsey R. Johnson
LSU Master's Theses
El Tatio geyser field, northern Chile, impacts regional water quality, policy, and agricultural commerce due to the geothermal waters containing high concentrations of naturally-occurring arsenic (As). In the circumneutral pH, non-sulfidic thermal waters at El Tatio, dissolved arsenite [As(III)] dominates geyser discharge water upstream, but dissolved arsenate [As(V)] dominates downstream. Microbial mats and sediments were analyzed for changes in As speciation using X-ray spectroscopy methods, such as XANES and EXAFS at both the As and Fe K-edges, combined with ATR-FTIR spectroscopy and molecular genetics, to understand As cycling. The sediments and microbial mats were dominated by As(V) speciated as both …
Neurotoxin In A Louisiana Estuary: Quantitative Analysis Of Domoic Acid In Gulf Menhaden (Brevoortia Patronus) And Qualitative Modeling Of Links In A Shark Nursery, Ross Del Rio
LSU Master's Theses
Harmful algal blooms are an increasing problem for coastal waters world-wide. The diatom genus, Pseudo-nitzschia, is of particular concern in Louisiana, due to the potential for several species to produce the neurotoxin domoic acid (DA). While trophic transfer of DA to consumers has repeatedly occurred along the California coast, little is known about trophic transfer of recently detected DA in the Gulf of Mexico. In this study, the presence of DA in gulf menhaden (Brevoortia patronus) and the potential for trophic transfer to higher order consumers was investigated. In addition, the effects of this transfer and other algal toxins that …
Population Characteristics Of A White-Tailed Deer Herd In A Bottomland Hardwood Forest Of South-Central Louisiana, Justin W. Thayer
Population Characteristics Of A White-Tailed Deer Herd In A Bottomland Hardwood Forest Of South-Central Louisiana, Justin W. Thayer
LSU Master's Theses
White-tailed deer are an important economic and recreational resource in Louisiana. A basic understanding of population dynamics is essential to ensure sound management, but baseline information in Louisiana is lacking. Likewise, the notion of Quality Deer Management (QDM) continues to gain momentum in Louisiana. Our objectives were to evaluate space use, survival, and mortality for a deer herd managed under a QDM regime in south Louisiana. We captured 65 deer in West Baton Rouge and Iberville Parishes during 2007 and 2008, radio-marked 37 males and 11 females, and ear-marked an additional 10 males and 7 females. Home ranges (95%) for …
Segmented Field Electron Conformal Therapy With An Electron Multi-Leaf Collimator, John Gordon Eley
Segmented Field Electron Conformal Therapy With An Electron Multi-Leaf Collimator, John Gordon Eley
LSU Master's Theses
Purpose: The purpose of this work was to investigate the potential of a prototype electron multi-leaf collimator (eMLC) to deliver segmented-field electron conformal therapy (ECT) and to improve dose homogeneity to the planning target volume (PTV) by feathering the abutting edge of the higher energy electron fields. Methods: Software was developed to define the eMLC leaf positions that most closely fit a general field shape. Electron beams (6-20 MeV) using a prototype eMLC were commissioned for the pencil beam dose algorithm in the Pinnacle treatment planning system. A discrete (5-step) Gaussian edge spread function was used to match electron dose …
Distribution And Habitat Associations Of Breeding Secretive Marsh Birds In The Mississippi Alluvial Valley Of Northeast Louisiana, Jonathon Joseph Valente
Distribution And Habitat Associations Of Breeding Secretive Marsh Birds In The Mississippi Alluvial Valley Of Northeast Louisiana, Jonathon Joseph Valente
LSU Master's Theses
Populations of many North American secretive marsh birds (SMBs) have declined over the past 30 years, primarily as a function of wetland loss. Ranges for many of these species encompass Louisiana and researchers have investigated various characteristics associated with breeding populations in coastal wetlands, yet similar knowledge is lacking for other parts of the state. I investigated distributions and habitat characteristics associated with breeding SMBs in wetlands and rice fields of the lower Mississippi Alluvial Valley (MAV) of northeast Louisiana. In the 2007 and 2008 breeding seasons we conducted repeated bird surveys in 118 wetlands and 76 rice fields. Common …
M. Effects Of Land Use And Habitat On Stream Fish Assemblages In Tributaries Of The Lower Bogue Chitto Watershed, Washington Parish, Louisiana, Brian Michael Ward
M. Effects Of Land Use And Habitat On Stream Fish Assemblages In Tributaries Of The Lower Bogue Chitto Watershed, Washington Parish, Louisiana, Brian Michael Ward
LSU Master's Theses
My research focused on how fish communities are responding to watershed land use and instream habitat in tributaries of the Lower Bogue Chitto River. To address this question I electrofished and seined 10 sites in four tributaries of the Bogue Chitto River a total of 4 times each over the course of 15 months in 2007 and 2008. I characterized habitat by measuring water flow, water depth, substrate size, woody debris, temperature, and dissolved oxygen, and quantified heterotrophic plate counts, nutrients, and chlorophyll a concentrations at the end of the sampling period each year. Watershed land cover was measured with …
Rate Of Change With Applications In Physics Problems, Maria Ludu
Rate Of Change With Applications In Physics Problems, Maria Ludu
LSU Master's Theses
In this thesis we approach the concept of Rate of Change as a mathematical model, and we apply it to a few physics problems. Its main goal is to help students to bridge concepts form mathematical models and the real life applications. We begin with a review of measurements, proportionality and similarity based on Euclidean geometry; then, we review linear and affine functions, and we introduce a mathematical model for the average and instantaneous rate of change. This mathematical model is applied to problems from physics following the four representations of functions: verbal, algebraic, tabular and graphical. By doing so, …
Efforts Of Coating And Testing High Aspect Ratio Microfabricated Nickel Gas Chromatography Columns, Arun Kumar K Paga
Efforts Of Coating And Testing High Aspect Ratio Microfabricated Nickel Gas Chromatography Columns, Arun Kumar K Paga
LSU Master's Theses
Gas chromatography (GC) is a widely used analytical technique, with applications in the chemical process industry, oil exploration, environmental monitoring, purification of substances, and general organic compound analysis. Although traditional GC’s are widely used they have their own disadvantages like high power consumption and long times for analysis. Several laboratories are working on the miniaturization of GC’s for rapid and onsite chemical analysis. Many researchers are currently working on the development of microfabricated columns for realizing a hand held GC sensor. Microfabricated nickel columns have been manufactured by Center for Advanced Microstructures & devices (CAMD), Baton Rouge. The columns are …
Dosimetric Evaluation Of A Delivery Verification And Dose Reconstruction Method For Helical Tomotherapy, Ricky Hesston
Dosimetric Evaluation Of A Delivery Verification And Dose Reconstruction Method For Helical Tomotherapy, Ricky Hesston
LSU Master's Theses
Purpose: To determine the dosimetric accuracy of a dose reconstruction method used for verification of helical tomotherapy delivery for three different clinical sites. Methods and Materials: A delivery verification and dose reconstruction method has been applied to helical tomotherapy treatment plans of three different treatment sites (head & neck, prostate and lung). Treatment plans were generated on a cylindrical measurement phantom (TomoPhantom) using contours, prescriptions and planning objectives taken from clinical patient plans of the three sites. Film and ion chamber measurements were made for each plan with and without intentional changes in the machine output [-4% to 4%] or …
Greedy Methods For Approximate Graph Matching With Applications For Social Network Analysis, Partha Basuchowdhuri
Greedy Methods For Approximate Graph Matching With Applications For Social Network Analysis, Partha Basuchowdhuri
LSU Master's Theses
In this thesis, we study greedy algorithms for approximate sub-graph matching with attributed graphs. Such algorithms find one or multiple copies of a sub-graph pattern from a bigger data graph through approximate matching. One intended application of sub-graph matching method is in Social Network Analysis for detecting potential terrorist groups from known terrorist activity patterns. We propose a new method for approximate sub-graph matching which utilizes degree information to reduce the search space within the incremental greedy search framework. In addition, we have introduced the notion of a “seed” in incremental greedy method that aims to find a good initial …
Moderating Effects Of Knowledge, Gender, And Education On The Relationship Between Environmental Value Orientation And Support For Louisiana Coastal Restoration, Meya Voorhies Holloway
Moderating Effects Of Knowledge, Gender, And Education On The Relationship Between Environmental Value Orientation And Support For Louisiana Coastal Restoration, Meya Voorhies Holloway
LSU Master's Theses
Coastal Louisiana marshes are eroding at a rate equivalent to one football field every thirty minutes. It is vital to understand the perceptions of the American public regarding this issue. I conducted a self-administered mail survey during the spring of 2006. The survey was sent to 4,500 residents living in the Mississippi River Valley. The survey was used to identify respondents environmental value orientations, assess respondents attitudes with regards to support for restoration funding for Louisiana’s coastal wetlands, and to determine if outside moderating effects occurred to make respondents with specific value orientations (Anthropocentric or Biocentric) more likely to support …
Impact Of Intrafraction Motion On Post-Mastectomy Tomotherapy Of The Chest Wall, Shima Ito
Impact Of Intrafraction Motion On Post-Mastectomy Tomotherapy Of The Chest Wall, Shima Ito
LSU Master's Theses
Purpose: The present work investigates the impact of intrafraction motion of the chest wall due to respiration on Post Mastectomy Radiotherapy (PMRT) with TomoTherapy. The hypothesis of this work is that the impact of intrafraction motion on TomoTherapy PMRT will be insignificant as (1) the largest intrafraction movement of the chest wall (CW) in the medial-lateral, anterior-posterior, and superior-inferior dimensions will not exceed 1 cm and (2) that 95% of in-vivo CW point doses on the patient surface will be within 5% of calculated dose and all doses within 10% of calculated dose. Methods: 4DCT scans were acquired and intrafraction …
Resiliency Of New Orleans Following Hurricane Katrina: A Study Of Communities Three Years After The Storm, Lauren Marie Defrank
Resiliency Of New Orleans Following Hurricane Katrina: A Study Of Communities Three Years After The Storm, Lauren Marie Defrank
LSU Master's Theses
In 2005, Hurricane Katrina and subsequent levee failures produced widespread flooding in New Orleans, Louisiana and forced the evacuation of most of the local population. This event allowed for the study of the community’s resilience, or the ability of a system to absorb changes or perturbations and still function. Statistical analysis and case studies were used to study resilience and answer the following questions. Can natural community recovery models be used when evaluating the population recovery of a human community following a disturbance? Given that there are variations in population recovery patterns, what factors account for this difference in recovery? …
The Use Of The Online Tutorial And Assessment System, Mathxl, In Teaching Of Algebra I, Darlene Noble Ford
The Use Of The Online Tutorial And Assessment System, Mathxl, In Teaching Of Algebra I, Darlene Noble Ford
LSU Master's Theses
The integration of web based learning tools into the teaching of mathematics holds much promise for engaging middle and high school students. The purpose of this thesis is to report about my experiences regarding the effectiveness of using an online homework, tutorial and assessment system as part of two of the six Algebra I math classes I taught in the 2008-2009 school year at Sherwood Middle Academic Magnet School in East Baton Rouge Parish. Comparing the two sets of classes I found that such online systems offer many potential advantages to educators, such as the ability to provide instantaneous feedback, …
A Comparative Study Of Geometry Curricula, Robyn Williams Carlin
A Comparative Study Of Geometry Curricula, Robyn Williams Carlin
LSU Master's Theses
In the United States, geometry has long been offered to high school students in the tenth grade. Attempts have been made in recent years to expand the role of geometry across grades Pre-K through twelve. However, based on the latest TIMSS results, although students in the United States made gains in most content areas, they still struggle with geometric concepts compared to their counterparts in other nations of the world, primarily those in certain Asian countries like Singapore and China. We argue that the structure of the curriculum and the instructional strategies used in these countries may lead to more …
Provenance Studies Of Volcanic Clasts From The Santa Fe Group, San Luis Basin, Colorado: A Guide To Tectonic Evolution, Corine Kay Armstrong
Provenance Studies Of Volcanic Clasts From The Santa Fe Group, San Luis Basin, Colorado: A Guide To Tectonic Evolution, Corine Kay Armstrong
LSU Master's Theses
Volcanic clasts at the base of the Tertiary Santa Fe Group of the San Luis Basin (SLB), a major extensional feature of the northern Rio Grande Rift, provide evidence for the direction of sediment transport and timing of regional tectonic events. A combination of clast whole rock geochemistry (major and trace element), mineral chemistry (amphibole, biotite, pyroxene and feldspar) and geochronology (40Ar/39Ar of amphibole and biotite and U-Pb of zircons) is used to constrain the possible source scenarios. Several potential sources with requisite geochemical and geochronological information exist for the Santa Fe Group volcanic clasts including rocks from Spanish Peaks …
Mathematics Grade 8 Leap Scores: A Predictor Of Student Success In Dimensional Analysis?, Martha Lauren Baggett
Mathematics Grade 8 Leap Scores: A Predictor Of Student Success In Dimensional Analysis?, Martha Lauren Baggett
LSU Master's Theses
This study investigates whether the Mathematics Grade 8 LEAP score can be used to predict student success in a key concept of chemistry, dimensional analysis. Mathematics Grade 8 LEAP scores of 106 ninth grade students enrolled in physical science during the 2008-09 school year were tested for correlations with student performance on a pre-test of dimensional analysis, a post-test of dimensional analysis, and student learning gain. Significant, positive correlations were observed between the Mathematics Grade 8 LEAP scores and the pre-test scores of dimensional analysis scores, the post-test scores of dimensional analysis scores, and the dimensional analysis student learning gain. …
Role Of Shelf Morphology In Grounding-Line Stability: A Numerical Approach, Rhonika Robinson
Role Of Shelf Morphology In Grounding-Line Stability: A Numerical Approach, Rhonika Robinson
LSU Master's Theses
The main concern of this study is to discover how the transition from a shallow to an overdeepened, foredeepened shelf might affect grounding-line translation of the West Antarctic Ice Sheet (WAIS). Deep shelves permit a larger influx of relatively warm Circumpolar Deep Water (CDW), which melts the ice at grounding lines, and thereby, create a potentially unstable situation in which ice retreat may accelerate. Numerical analysis of the responses of marine ice sheets on various shelf profiles confirmed that a change in shelf morphology changes ice sheet dynamics. Ice sheet retreat on an overdeepened, foredeepened shelf is, at least, 3 …
Capillary Electrophoretic Separations Of Enzyme Inhibitors With Activity-Based Detection, Xiaoyan Yan
Capillary Electrophoretic Separations Of Enzyme Inhibitors With Activity-Based Detection, Xiaoyan Yan
LSU Master's Theses
A technique for separating and detecting enzyme inhibitors was developed using capillary electrophoresis with an enzyme microreactor. The on-column enzyme microreactor was constructed using one or two NdFeB magnets in two configurations to immobilize alkaline phosphatase-coated superparamagnetic beads with diameters of 2.8 µm inside a capillary before the detection window. Enzyme inhibition assays were performed by injecting a plug of inhibitor into a capillary filled with an alkaline phosphatase substrate, AttoPhos. Product generated in the enzyme microreactor was detected by laser-induced fluorescence. Inhibitor zones electrophoresed through the capillary, passed through the enzyme microreactor, and were observed as negative peaks due …
Your Land Is My Land: Exploring Land Policy In Tangerang, Indonesia Using Kingdon's Multiple Streams Model, Milla Budiarto
Your Land Is My Land: Exploring Land Policy In Tangerang, Indonesia Using Kingdon's Multiple Streams Model, Milla Budiarto
LSU Master's Theses
Indonesia is the world’s largest archipelagic country comprised of over 17, 000 islands with more than 300 ethnic groups and more than 250 different ethnic languages spoken. Due to its land mass size and multifaceted culture, land policy in this country has been ineffective and inadequate in addressing some of the land affairs. One of the indicators of effective land policy is land tenure security, where land dispute incidence is a function of it. Given that the government has very minimal guarantee for land tenure security in this nation, land disputes are inevitable and very common. By the end of …
Applying The Isotope Pairing Technique To Evaluate How Water Temperature And Habitat Type Influence Denitrification Estimates In Breton Sound, Louisiana, Peter L. Lenaker
Applying The Isotope Pairing Technique To Evaluate How Water Temperature And Habitat Type Influence Denitrification Estimates In Breton Sound, Louisiana, Peter L. Lenaker
LSU Master's Theses
The upper Breton Sound estuary was hydrologically reconnected to the Mississippi River via the Caernarvon freshwater diversion structure in 1991. The Caernarvon structure can provide controlled freshwater pulses to the upper Breton Sound estuarine ecosystem, replicating historic freshwater pulsed events, although the original authorization was to control salinity isohalines at specific locations in the estuary. However, unlike historic freshwater pulsed events prior to the construction of levees, the current freshwater pulse contains an unprecedented amount of inorganic nitrogen, predominately as nitrate (annual average 71.4 µM NO3-). Denitrification is a microbial process, which can potentially remove excess nitrate entering coastal Louisiana …
Comparison Of Helical Tomotherapy And Mixed Beam Treatment Plans For Superficial Head And Neck Cancers, Olivier C. Blasi
Comparison Of Helical Tomotherapy And Mixed Beam Treatment Plans For Superficial Head And Neck Cancers, Olivier C. Blasi
LSU Master's Theses
Purpose: To compare helical tomotherapy (HT) with mixed beam therapy (electron and IMRT) plans for superficial parotid gland and nasal cavity tumors. Methods: Mixed beam and HT dose plans were developed for five patients with superficial tumors (planning target volume or PTV < 5.5 cm depth), three with parotid gland tumors and two with nasal cavity tumors. Seven mixed beam plans included a 5 or 7-field photon IMRT plan optimized on top of a single en-face 16 or 20 MeV electron beam dose distribution. The ratio of photon to electron beam weights (at depth R100) were 1:0 (IMRT only), 2:1, 1:1, 1:2, 1:3, 1:4, and 0:1 (electrons only). Planning objectives for HT plans were set as closely as possible to those in the mixed beam plans, and were determined using our clinical planning protocol for head and neck cancers. The resulting dose distribution from each plan was evaluated using dose-volume quantities, tumor control probability (TCP), normal tissue complication probability (NTCP), and a clinical evaluation by a radiation oncologist. Results: In general, the HT plans showed better target coverage and dose homogeneity index (DHI) than the mixed beam plans. For the parotid patients, the DHI improved an average of 0.056 and 0.035 for the nasal cavity patients compared to the mixed beam plan. TCP was comparable in all patients. NTCP for the mixed beam plan was generally lower or comparable to HT with the largest improvements seen in the contralateral parotid, eye, and lens. Also, the mixed beam plans yielded more favorable PTV and normal tissue results for a single shallow uniform PTV using a heavier weighted electron to IMRT ratio (1:3 or 1:4 ratio of electron to IMRT). Conclusions: The study showed that while HT plans had better target coverage and dose homogeneity, the mixed beam plans (electron and IMRT) had comparable tumor control probability and have the potential for improving NTCP for distal normal tissue for superficial uniform PTVs.
Supercritical Fluid Extraction And Analysis Of Plant Oils, Tianchuan Du
Supercritical Fluid Extraction And Analysis Of Plant Oils, Tianchuan Du
LSU Master's Theses
Supercritical fluid extraction (SFE) of oxeye daisy (Chrysanthemum leucanthemum L.) seed, heartwood of Port-Orford cedar (POC) (Chamaecyparis lawsoniana), Alaska yellow cedar (AYC) (Chamaecyparis nootkatensis), and Eastern red cedar (ERC) (Juniperus virginiana L), and Chinese tallow (Sapium sebiferum L. Roxb. ) seed was investigated in this study and compared with other extraction methods. For the oxeye daisy seed extraction, Soxhlet extraction (SE) with hexane, microwave assisted extraction (MAE), and supercritical fluid extraction (SFE) were conducted. The results showed that as the extraction temperature decreased from 100 °C, the extraction rate increased until 30 °C using SFE. With an increase of extraction …
Creating An Empirically Derived Community Resilience Index Of The Gulf Of Mexico Region, Ariele Nicole Baker
Creating An Empirically Derived Community Resilience Index Of The Gulf Of Mexico Region, Ariele Nicole Baker
LSU Master's Theses
As coastal areas increase in populations there is an increasing need to determine what community characteristics are most resilient to coastal disasters. This research proposes two methods to quantify community resilience. The factor analysis method results in a weighted additive index model of six variables to derive community resilience. The index places every community in the Gulf of Mexico on a scale from 0-1. The most resilient counties in the Gulf of Mexico region were found to be Hillsborough, FL, Pinellas, FL, Sarasota, FL, Hernando, FL, Okaloosa, FL, Kenedy, TX, and Jefferson, LA with a resilience score of 1. The …
Populations Of Vibrio Vulnificus And Vibrio Parahaemolyticus In Breton Sound And Barataria Bay, Brian William Matherne
Populations Of Vibrio Vulnificus And Vibrio Parahaemolyticus In Breton Sound And Barataria Bay, Brian William Matherne
LSU Master's Theses
Vibrio vulnificus and Vibrio parahaemolyticus are halophilic gram-negative bacteria that are found in warm coastal waters. These two species are the leading cause of fatal shellfish poisoning. The objective of this study was to determine the population dynamics of V. vulnificus and V. parahaemolyticus as impacted by temperature and salinity in Breton Sound and Barataria Bay of Louisiana. Water samples were collected from each water body along s salinity gradient transect monthly from September 2007 through July 2009. Furthermore, from March 2008 through July 2009 sediment and live oyster samples were collected exclusively from the Breton Sound. The population of …