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Articles 181 - 198 of 198
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Occurrence And Phenology Of Polistine Wasps (Hymenoptera: Vespidae) In Southern Louisiana, Scott Nacko
Occurrence And Phenology Of Polistine Wasps (Hymenoptera: Vespidae) In Southern Louisiana, Scott Nacko
LSU Master's Theses
Phylogenetic studies suggest that historically all paper wasps (Vespidae: Polistinae) in North America have tropical origins. However, paper wasps have adapted to thrive in temperate conditions. Subtropical and temperate climates allow for a study of adaptive traits which can be retained or lost within populations, and ultimately help elucidate the process of social wasp evolution. Additionally, species occurrence patterns can help us to understand partitioning and resource use within populations. We investigated the occurrence and phenology of each Polistine species found at four sites in southern Louisiana around Baton Rouge, and also examined the occurrence and behavior of a closely …
Quizalofop-P-Ethyl Herbicide Interactions In Accase-Resistant Rice Production, Samer Y. Rustom Jr.
Quizalofop-P-Ethyl Herbicide Interactions In Accase-Resistant Rice Production, Samer Y. Rustom Jr.
LSU Master's Theses
A field study was conducted in 2015 and 2016 at the H. Rouse Caffey Rice Research Station (RRS) to evaluate mixture interactions of quizalofop and ALS-inhibiting herbicides. Quizalofop was applied at 120 g ai ha-1. Mixture herbicides included penoxsulam at 40 g ha-1, penoxsulam plus triclopyr at 352 g ha-1, halosulfuron at 53 g ha-1, bispyribac at 34 g ha-1, orthosulfamuron plus halosulfuron at 94 g ha-1, orthosulfamuron plus quinclorac at 491 g ha-1, imazosulfuron at 211 g ha-1, and bensulfuron at 43 g ha-1. All ALS herbicides mixed with quizalofop indicated antagonistic responses for weedy rice or barnyardgrass control …
Pesticide Concentrations In Water From A Southern Louisiana Marsh Influenced By The Mississippi River, Kara Leigh Callicott
Pesticide Concentrations In Water From A Southern Louisiana Marsh Influenced By The Mississippi River, Kara Leigh Callicott
LSU Master's Theses
The pesticides atrazine, chlorothalonil, and fipronil are common surface water contaminants due to their high rates of application and their chemical properties. This study investigates the introduction of contaminants into coastal wetlands via the Bayou Lamoque Mississippi River control structure in Plaquemines Parish, Louisiana. A protocol for environmental sampling using Continuous Low-level Aquatic Monitoring (C.L.A.M.) C-18 disks is described, along with effective solid phase extraction (SPE) and gas chromatography mass spectrometry (GC/MS) methodology for the determination of atrazine, chlorothalonil, and fipronil in surface water. Average concentrations of atrazine and chlorothalonil inside the Bayou Lamoque freshwater diversion structure for the months …
Comparison Of Two Near-Isogenic Lines Of Bell Pepper (Capsicum Annuum): One Endornavirus-Infected And The Other Endornavirus-Free, Cesar Escalante Guardado
Comparison Of Two Near-Isogenic Lines Of Bell Pepper (Capsicum Annuum): One Endornavirus-Infected And The Other Endornavirus-Free, Cesar Escalante Guardado
LSU Master's Theses
Bell pepper (Capsicum annuum) is an economically important food crop cultivated worldwide. So far, all tested commercial cultivars have been shown to be infected with Bell pepper endornavirus (BPEV). Although BPEV does not cause apparent disease, the effect of this virus on bell pepper has not been investigated. A comparative study that included plant phenotype and some physiological characteristics was conducted with two near-isogenic lines (NIL) of the bell pepper cv. Marengo: one infected with BPEV and the other BPEV-free. The interaction of BPEV with a disease-causing virus of pepper, Pepper mild mottle virus (PMMoV), was also investigated. Differences in …
Modelling And Observational Evidence For The Igneous Evolution Of The Elysium Volcanic Province On Mars, David Andrew Susko
Modelling And Observational Evidence For The Igneous Evolution Of The Elysium Volcanic Province On Mars, David Andrew Susko
LSU Master's Theses
A major knowledge gap exists on how eruptive compositions of a single martian volcanic province change over time. The Elysium Volcanic Province is a location of great geologic interest on Mars. Its predominantly Amazonian surface age (beginning 3.3 Ga), and its isolation in the northern hemisphere of Mars away from other volcano-tectonic regions, make it an ideal locale to investigate igneous compositions erupted during the most recent geologic period on Mars. Here, this work seeks to fill that gap by assessing the compositional evolution of Elysium as a major martian volcanic province in two related projects. The first project seeks …
Damon Hill, Elizabeth Welch
Damon Hill, Elizabeth Welch
LSU Master's Theses
“Damon Hill” acts as a physical record of the family folklore of a group of people formed by landscape and kinship. As a member of this group, I have translated my family’s stories into a visual narrative as a way to process my own identity in relation to our shared identity. The focus of “Damon Hill” rests primarily on the lives of my female predecessors, as a way for me to contribute their unique voice to the overarching feminine narrative. I incorporate the visual representation of traditionally feminine handicrafts in order to relay their stories through the primary means of …
Quantitation Of Anti-Pythium Insidiosum Antibodies Before And After Immunotherapy In Healthy Dogs, Carmen Beatriz Arsuaga
Quantitation Of Anti-Pythium Insidiosum Antibodies Before And After Immunotherapy In Healthy Dogs, Carmen Beatriz Arsuaga
LSU Master's Theses
Pythium insidiosum is an aquatic oomycete that causes invasive, progressive granulomatous lesions of the skin in dogs, horses, and cats, and of the gastrointestinal tract in dogs. Quantitation of anti-P. insidiosum IgG antibodies can be used in dogs to both confirm a suspected diagnosis and to monitor response to therapy. Recently, an immunotherapeutic product (IP) has been marketed for the treatment of pythiosis in dogs, horses, and people. The aim of this study was to evaluate the effect of administration of this product on anti-P. insidiosum IgG concentrations in dogs. The IP was administered to seven, healthy hound mixes on …
Chronicle & Character, Taryn Moller Nicoll
Chronicle & Character, Taryn Moller Nicoll
LSU Master's Theses
In this thesis paper, I argue that the works in the exhibition 'Chronicle & Character' aim to demonstrate artistic citizenship and can contribute positively to society by provoking conversation about universally applicable (but often uncomfortable) topics. Experts such as David J. Elliot state that being an artistic citizen means that one’s concerns as an artist must shift from issues constrained to the artist alone to those of the artist’s surrounding community. The exhibition 'Chronicle & Character' contains works that serve as detailed chronicles of the medical or physiological experiences of my loved ones. This body of work presents how three …
Evaluation Of The Microbial Quality Of Cantaloupe Fruit Produced On Raised Or Flat Beds Following A Flooding Event, Isaack Kikway
Evaluation Of The Microbial Quality Of Cantaloupe Fruit Produced On Raised Or Flat Beds Following A Flooding Event, Isaack Kikway
LSU Master's Theses
Floodwater can contain microbial contaminants such as plant and foodborne pathogens and can compromise the quality of fresh fruit and vegetables produced in Louisiana. The goal of this research was to determine the impact of flooding on microbial quality (foodborne and plant pathogens) of cantaloupe fruit produced on raised or flat beds. Cantaloupe fruit produced on 30 cm raised beds or flat ground, were flooded with a mixture of surface and well water spiked with three generic Escherichia coli strains (ATCC 23716, 25922, 11775). Mean baseline generic Escherichia coli and total coliform populations in flood water (mixture of spiked well …
Unsteady Flow Simulations To Develop Model Scale Discharge Hydrographs For The Expanded Small Scale Physical Model Of The Mississippi River, Ronald Joseph Rodi
Unsteady Flow Simulations To Develop Model Scale Discharge Hydrographs For The Expanded Small Scale Physical Model Of The Mississippi River, Ronald Joseph Rodi
LSU Master's Theses
Small-scale HEC-RAS models were used to analyze discharges used to test the Louisiana State University and the Louisiana Coastal Protection & Restoration Authority Expanded Small Scale Physical Model (ESSPM) of the Mississippi River. The HEC-RAS models extend from River Mile 228.4 (Baton Rouge) to the Gulf of Mexico that includes the ESSPM reach which begins at River Mile 173.5 (Donaldsonville). The model scales are 1:6000 horizontally and 1:400 vertically. Using the historic river discharges from 2008 through 2015, the small-scale numerical models proved capable of replicating observed stages along eleven sites of the lower Mississippi River within the targets of …
Trace, Naomi Katy Louise Clement
Trace, Naomi Katy Louise Clement
LSU Master's Theses
The pots in the exhibition Trace speak both to my desire to belong, to connect to my beginnings, and yet to still trace my own path forward; they are about making connections and missing connections. Through these pots I ask questions of myself and the world around me in an attempt to negotiate the edges of my life. How do I feel connected and present in my own life and relationships? How do I feel connected to my family and my roots, while still finding my own path? What does it mean to belong in a family that is divided …
Role Of Varietal Resistance In Managing The Rice Water Weevil, A Major Insect Pest Of Louisiana Rice, Maisarah Mohamad Saad
Role Of Varietal Resistance In Managing The Rice Water Weevil, A Major Insect Pest Of Louisiana Rice, Maisarah Mohamad Saad
LSU Master's Theses
Resistance of several commercial rice varieties widely grown in Louisiana was assessed against the rice water weevil (Lissorhoptrus oryzophilus Kuschel), the major insect pest of rice in the United States. A five-year field study was conducted to identify resistant genotypes among conventional inbred, herbicide tolerant, conventional hybrid, and herbicide tolerant hybrid varieties. Resistance was evaluated in two different locations to enable selection of rice varieties with wide adaptability over diverse environments. There were no large differences in the resistance found amongst commercial rice varieties over the five-year field study. Jefferson was frequently found to support lower larval densities than other …
Heat And Mass Transfer In A Cylindrical Heat Pipe With Idealized Porous Lining, Pramesh Regmi
Heat And Mass Transfer In A Cylindrical Heat Pipe With Idealized Porous Lining, Pramesh Regmi
LSU Master's Theses
Many devices use heat pipes for cooling. They can be of different cross-sectional shapes and can range from 15 m long to 10 mm. In this work, the heat and mass transfer in a cylindrical heat pipe is modelled. The heat pipe is lined with a wick next to the wall. The wick consists of straight capillaries that run the whole length of the pipe and radially aligned capillaries that span the width of the wick. The capillaries are filled with a partially wetting liquid, and the center of the pipe is filled with its vapor. The radial capillaries are …
Measuring The Effects Of Recycled Water On The Growth Of Three Algal Species: Tisochrysis Lutea, Chaetcoeros Calcitrans, And C. Muelleri In A Commercial-Scale Oyster Hatchery, Lisa Marie Bourassa
Measuring The Effects Of Recycled Water On The Growth Of Three Algal Species: Tisochrysis Lutea, Chaetcoeros Calcitrans, And C. Muelleri In A Commercial-Scale Oyster Hatchery, Lisa Marie Bourassa
LSU Master's Theses
Algal production is often the limiting factor in large-scale oyster hatcheries, and constant, reliable production is required to grow enough algae to support all oyster larvae and broodstock grown and conditioned in a hatchery. The algal rooms in the Michael C. Voisin Oyster Hatchery at Grand Isle, LA are temperature-controlled to maintain consistent temperature, but this hatchery is also unique in its ability to recycle natural seawater pumped from the northern Gulf of Mexico. Effects of recycling seawater on algal production in an oyster hatchery, however, are undocumented. In this study, Tisochrysis lutea, Chaetoceros calcitrans and C. muelleri were grown …
Development And Test Of A Sweet Sorghum Feedstock Separation Technology And The Effect Of Trash On Fermentable Sugar Yield In Juice And Syrup, Edgar Jose Tobias Corado
Development And Test Of A Sweet Sorghum Feedstock Separation Technology And The Effect Of Trash On Fermentable Sugar Yield In Juice And Syrup, Edgar Jose Tobias Corado
LSU Master's Theses
In the recent years, processing sweet sorghum feedstock to obtain syrup for biofuels production is an option that has gained attention, especially where sugar cane milling infrastructure is already available; however, the leafy matter and panicles (trash) in the feedstock could negatively impact the process. Therefore, it seems sensible to reduce the trash level in the feedstock prior to milling and expand the current knowledge on the effect of trash in the juice and syrup. In this project, a pneumatic system to separate the leaves from sweet sorghum harvested with a sugar cane billet harvester was tested and a panicles …
Pharmacokinetics Of Micronized Progesterone Administration In Female Dogs, Raphael Anthony Malbrue
Pharmacokinetics Of Micronized Progesterone Administration In Female Dogs, Raphael Anthony Malbrue
LSU Master's Theses
Hypoluteoidism in the bitch is described as a reproductive condition in which insufficient levels of endogenous progesterone are present resulting in failure to maintain a functional secretory endometrium. This condition can prevent normal embryo implantation, development, and ultimately end in pregnancy loss. Hypoluteoidism in the bitch is a rising concern in small animal theriogenology and current medical therapies available to veterinarians are limited. The aim of this study was to determine the pharmacokinetics (PK) of intravaginally (Crinone®, Serono Laboratories, Norwell, MA) and orally delivered micronized progesterone (Prometrium®, Solvay Pharmaceuticals, Inc., Marietta, GA) in the bitch. We hypothesized that both vaginal …
Cold Tolerance And Overwintering Physiology Of The Salvinia Weevil (Cyrtobagous Salviniae): Improving The Biological Control Of Giant Salvinia In Temperate Louisiana, Alana D. Russell
LSU Master's Theses
Cyrtobagous salviniae is widely used for biological control of Salvinia molesta. Despite success in tropical and subtropical regions, the effectiveness of C. salviniae on S. molesta is inconsistent in temperate regions, indicating the need for a better understanding of the thermal biology of this agent. The objectives of this study were to compare cold tolerance of C. salviniae populations from the temperate native range and Louisiana, and characterize the overwintering physiology and population dynamics of C. salviniae in Louisiana. Surveys of the Lower Paraná-Uruguay Delta resulted in the first record of C. salviniae in Uruguay, and revealed the most southern …
Accumulation And Dynamics Of Petrogenic Pahs On Leaves Of Black Mangrove (Avicennia Germinans), Matthew Decell
Accumulation And Dynamics Of Petrogenic Pahs On Leaves Of Black Mangrove (Avicennia Germinans), Matthew Decell
LSU Master's Theses
Crude oil from Deepwater Horizon Macondo oil spill is currently present in Louisiana coastal surface sediments and its effects on the coastal ecosystem are still being realized. Deposition of 2- and 3-ring PAHs (alkylated naphthalenes and phenanthrenes) on the exterior of Spartina alterniflora and Avicennia germinans leaves have been demonstrated in marshes impacted by Macondo spill. Whether these deposition events result from contaminated tidal water or volatilization followed by deposition onto the leaf surface has not been conclusively established. Measurements of PAH deposition on the leaf surface of black mangrove (Avicennia germinans) can provide important evidence of the mechanism of …