Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5941 - 5970 of 13619

Full-Text Articles in Entire DC Network

Tube Current Modulated Computed Tomography Effective Dose And Size Specific Organ Dose Estimates With Impact: Total Scan Versus Slice By Slice Parameters For Urogram Protocols, David Wayne Byrd Jan 2014

Tube Current Modulated Computed Tomography Effective Dose And Size Specific Organ Dose Estimates With Impact: Total Scan Versus Slice By Slice Parameters For Urogram Protocols, David Wayne Byrd

LSU Master's Theses

Purpose: One of the predominant computed tomography (CT) dosimetry estimation programs, ImPACT, was not designed to estimate organ absorbed dose or effective dose for modern tube current modulated-CT (TCM-CT). ImPACT also only estimates organ doses for a standard adult hermaphrodite mathematical phantom, not for a specific patient. Two methods for calculating size specific TCM-CT organ absorbed dose and non-size dependent TCM-CT effective dose were developed and compared with conventional dose estimation methods. Methods: A sample of 48 TCM-CT urogram procedures was obtained. Patient specific dose was calculated for each data set by two methods. The first method was a summation …

Go to article

Development Of An Alternative Bait For The Louisiana Commercial Blue Crab (Callinectes Sapidus) Fishery, Angelle Nicole Anderson Jan 2014

Development Of An Alternative Bait For The Louisiana Commercial Blue Crab (Callinectes Sapidus) Fishery, Angelle Nicole Anderson

LSU Master's Theses

The blue crab (Callinectes sapidus) is a commercially, recreationally, and ecologically important species in Louisiana coastal waters. Louisiana landings account for more than 80% of Gulf of Mexico hard crab landings. In 2012, over 24 thousand metric tons of blue crab were landed in Louisiana with an economic value over $52 million. The blue crab fishery in the northern Gulf of Mexico relies heavily on Atlantic menhaden (Brevoortia tyrannus) for bait, which is a species with stock concerns resulting in approximately a 20% decrease in total allowable catch beginning in 2013. Decreased landings results in increased cost of B. tyrannus …

Go to article

Transport And Retention Of Cadmium, Copper, And Lead In Soils: Miscible Displacement Experiments, Nazanin Akrami Jan 2014

Transport And Retention Of Cadmium, Copper, And Lead In Soils: Miscible Displacement Experiments, Nazanin Akrami

LSU Master's Theses

Heavy metal contamination is a major concern for soil and water quality. To quantify their potential hazard, it is crucial to understand their mobility and retention in soils. The source of the problem is anthropogenic activities such as mining, smelting, usage of sewage sludge and fertilizers. The objective of this study was to quantify Cd, Cu and Pb transport and retention in three soils having different properties, and evaluate their competitive influence on the mobility of individual heavy metal. The second objective was to quantify Cd, Cu and Pb retention kinetics in the different soils. This study also investigates the …

Go to article

Impression Formation In The Online Amateur Setting: An Examination Of Transgender People, Minjie Li Jan 2014

Impression Formation In The Online Amateur Setting: An Examination Of Transgender People, Minjie Li

LSU Master's Theses

Technology is enhancing our amateur culture, which may provide counter-stereotype depictions. The present study reexamined the continuum model of impression formation by investigating how the mechanism of an amateur technology platform interacts with the depiction of amateur content created by social minority members to redirect people’s cognitive process of impression formation of minority members in the online amateur setting. More specifically, conducting a 2 (Stereotype Depiction) x 2 (Platform) experiment, this study looked at whether amateur platform YouTube encouraged people to go beyond stereotyping to form an counter-stereotypic impression of the mediated transgender person featured in the amateur content. Moreover, …

Go to article

A Study Of Induction Pyrolysis Of Lignicellulosic Biomass For The Production Of Bio-Oil, Charles Edward Henkel Jan 2014

A Study Of Induction Pyrolysis Of Lignicellulosic Biomass For The Production Of Bio-Oil, Charles Edward Henkel

LSU Master's Theses

The increasing demand for energy coupled with a growing concern that the combustion of fossil fuels has on the environment, through the production of greenhouse gases, has created a demand for renewable energy sources. The demand for renewable energy, particularly liquid transportation fuels, can be met in part by the use of biomass based liquid fuels. There are several methods that can be used to produce biomass based fuels, but only thermochemical conversion (pyrolysis) can readily convert lignocellulosic biomass into a fuel-like liquid, bio-oil. The pyrolytic conditions for obtaining maximum liquid yields vary, but many of the criteria can be …

Go to article

Silver Nanoparticle Oligonucleotide Conjugate For Targeted Gene Silencing, Alyson Nanette Moll Jan 2014

Silver Nanoparticle Oligonucleotide Conjugate For Targeted Gene Silencing, Alyson Nanette Moll

LSU Master's Theses

This project explored a gene-regulated chemotherapy using a silver nanoparticle (SNP) conjugated with deoxyribozyme (DNAzyme) oligonucleotides which target a mutated gene in select cancer cells, sensitize them to doxorubicin treatment. Light exposure to the SNP-DNAzyme conjugates disengages the oligonucleotides and permits specific cleavage of the Kirsten Rat Sarcomal Oncogene Homolog (K-RAS) mRNA. These conjugates could provide spatiotemporal specificity in killing only those photoexposed cells with the mutant gene. Synthesis, functionalization and characterization of citrate and hydroxypropyl cellulose SNP conjugates confirmed attachment and photolytic release of the thiol-modified 10-23 DNAzyme. Gel electrophoresis was used to demonstrate DNAzyme photoactivation, showing greater K-RAS …

Go to article

Iron Removal Using Electro- Coagulation Followed By Floating Bead Bed Filtration, Asmita Anil Phadke Jan 2014

Iron Removal Using Electro- Coagulation Followed By Floating Bead Bed Filtration, Asmita Anil Phadke

LSU Master's Theses

High iron concentrations in the water used for aquaculture results in stock losses. It is necessary to drop down the iron concentrations to levels which can be handled by the fish. Electrocoagulation followed by floating bead bed filtration was used to remove iron from water. Electrocoagulation was carried out using aluminum electrodes. The flocs formed in the coagulation tank were then filtered out using 2-3 mm polyethylene floating beads having specific gravity of 0.92 gm/cm3. Proper retention time of ≥ 10 min, pH of 6±0.2, Al3+ coagulant dosage of about 9 mg-Al3+/ L and flow rate ≤ 0.4 gpm resulted …

Go to article

Development Of Visible Light-Promoted Photocatalytic O-Glycosylation, C-H Activation Of Alkanes And Deoxygenation Of N-(Mesyloxy) Amides, Xiaoping Wang Jan 2014

Development Of Visible Light-Promoted Photocatalytic O-Glycosylation, C-H Activation Of Alkanes And Deoxygenation Of N-(Mesyloxy) Amides, Xiaoping Wang

LSU Master's Theses

This thesis is divided into four chapters reporting various aspects of the background of studies and the preliminary results I obtained in three projects. Chapter 1 gives a brief introduction to the concepts of photoredox catalysis, O-glycosylation, C-H functionalization and amidyl radicals. Chapter 2 describes the development of a visible light-promoted O-glycosylation catalyzed by Ru(bpy)3(PF6)2 or diphenyldiselenide under mild conditions. The glycosylation of primary and secondary alcohols with selenoglycosides was demonstrated with good yields, and disaccharides were constructed by coupling of the selenoglycosides in acetonitrile or dichloromethane with a glucosyl acceptor in moderate yields. The reactions catalyzed by Ru(bpy)3(PF6)2 were …

Go to article

Bioavailability Of Alpha-Tocopherol Entrapped In Poly (Lactide-Co-Glycolide) (Plga) And Plga-Chitosan Nanoparticles, Lacey Caroline Simon Jan 2014

Bioavailability Of Alpha-Tocopherol Entrapped In Poly (Lactide-Co-Glycolide) (Plga) And Plga-Chitosan Nanoparticles, Lacey Caroline Simon

LSU Master's Theses

Alpha-tocopherol (áT) is a hydrophobic, antioxidant molecule shown to prevent or retard the effects of free radicals associated with diseases. It is hypothesized that the bioavailability of áT can be improved when entrapped in PLGA (Poly lactide-co-glycolide) and PLGA-Chi (PLGA-Chitosan) nanoparticles and that the mucoadhesive properties of chitosan may enhance absorption more than PLGA alone. PLGA and PLGA-Chi NPs synthesized with PVA as surfactant were characterized by measuring entrapment efficiency, size, PDI, and zeta potential when suspended in DI water. Nanoparticle physical stability was evaluated via NP exposure to environmental pH ranging from 2.5-9. Chemical stability of entrapped áT was …

Go to article

Avian Biogeography And Conservation In Eastern Indonesia, John C. Mittermeier Jan 2014

Avian Biogeography And Conservation In Eastern Indonesia, John C. Mittermeier

LSU Master's Theses

Evaluating the conservation status of threatened species requires a sequential process of 1) taxonomic classification, 2) distributional mapping, and 3) evaluation of species according to criteria established by the IUCN Red List. Knowledge gaps in the first two phases of this process have been termed the Linnaean and Wallacean Shortfalls, respectively. The Indonesian archipelago is one of the most biologically diverse areas of the planet, as well as one of the most threatened and poorly studied, and the Linnaean and Wallacean Shortfalls pose substantial challenges for conservation in the region. Here I address each of the three stages of categorizing …

Go to article

Carbon Nanotube Inkjet Printing For Flexible Electronics And Chemical Sensor Applications, Ryan P. Tortorich Jan 2014

Carbon Nanotube Inkjet Printing For Flexible Electronics And Chemical Sensor Applications, Ryan P. Tortorich

LSU Master's Theses

Carbon nanotubes (CNTs) are becoming a promising new material for use in many fields including the field of electronics. Their mechanical and electrical properties lend themselves to be used in a new generation of electronic devices, namely flexible electronics. Although many deposition methods for carbon nanotubes exist, inkjet printing offers many advantages including superior patterning ability and low-cost fabrication. Presented in this work is the use of inkjet printing in order to deposit carbon nanotubes onto a flexible transparency film. The methods for developing and printing an aqueous single-walled carbon nanotube (SWCNT) ink and an aqueous multi-walled carbon nanotube (MWCNT) …

Go to article

Temporal Variability Of Particulate Organic Carbon Fluxes In The Northern Gulf Of Mexico, Somiddho Bosu Jan 2014

Temporal Variability Of Particulate Organic Carbon Fluxes In The Northern Gulf Of Mexico, Somiddho Bosu

LSU Master's Theses

There is limited data of Particulate Organic Carbon (POC) export from the Northern Gulf of Mexico and this work presents the first estimation of the efficiency of the “biological pump” in this region. In oligotrophic oceans like the Gulf of Mexico, POC is the main source of particles and POC flux is the key mechanism for the removal of particle reactive contaminants and pollutants from upper ocean water column. Particle-reactive, the naturally occurring radionuclides are useful tracers of the sinking flux of organic matter from the surface to the deep ocean. The disequilibrium between natural radioisotope pair 238U-234Th as well …

Go to article

Optimizing Bioengineered Coastal Materials, Matthew Byrum Jan 2014

Optimizing Bioengineered Coastal Materials, Matthew Byrum

LSU Master's Theses

Developing materials that are environmentally friendly and capable of high performance is important to maximize the efficiency and success of coastal restoration projects. Louisiana is losing large amounts of coastal land each year, while suffering 90% of the United States’ coastal wetland loss. Some areas have begun to implement physical structures to dissipate wave energy and accrete sediment. Recent technological advances have allowed the transformation of these structures into engineered ecosystems, with a focus on oyster accumulation. These ecosystems support the growth of oysters, Crassostrea virginica, which serve to improve water quality and protect shorelines through filtration and wave energy …

Go to article

Development Of Decision Support System For Managing And Using Recreational Beaches, Zhiqiang Deng, Fulbert Namwamba, Zaihong Zhang Jan 2014

Development Of Decision Support System For Managing And Using Recreational Beaches, Zhiqiang Deng, Fulbert Namwamba, Zaihong Zhang

Faculty Publications

The paper presents a decision support system (DSS) for managing and using recreational beaches. The DSS consists of (1) a sensor-assisted water quality monitoring system, (2) a multiple linear regression (MLR) model, developed with the Virtual Beach (VB) program, for predicting enterococci levels, and (3) a web-enabled Geographic Information System (GIS) platform for displaying beach water quality conditions. The MLR model was tested using a total of 945 sets of environmental and bacteriological data collected over 6 swimming seasons. It is found that the MLR model is capable of correctly predicting over 88% of beach advisories and over 80% of …

Go to article

The Association Between Attachment And Posttraumatic Growth In A Sample Of U.S. College Students, Keith Alan Morgan Jan 2014

The Association Between Attachment And Posttraumatic Growth In A Sample Of U.S. College Students, Keith Alan Morgan

LSU Master's Theses

The purpose of this study is to examine the association between attachment and posttraumatic growth. Previous literature has suggested that securely attached individuals show more positive methods of coping with stress by activating their attachment system and facing the distress of a traumatic event. On the other hand, insecurely attached individuals display more negative methods of dealing with stress. Those with insecure attachment may avoid the distress of a traumatic event or not successfully activate the attachment system. Thus, it is expected that securely attached individuals will demonstrate higher levels of posttraumatic growth, or positive reactions to the experience of …

Go to article

The Impact Of Virtual Simulations On Student Comprehension Of Mechanics, Ann Sanchez Couch Jan 2014

The Impact Of Virtual Simulations On Student Comprehension Of Mechanics, Ann Sanchez Couch

LSU Master's Theses

The use of technology in classrooms has become an increasing trend throughout all levels of education. Often times, teachers are left to figure out how to incorporate the many different types of available technologies into their lessons. This study examines the use of one specific type of technology in the classroom: computer simulations, specifically the impact of virtual lab simulations on student understanding of mechanics concepts. In this study, the experimental group and the control group received identical instruction in the form of lectures, practice problems, homework, and tests. The difference between the two groups was the use of virtual …

Go to article

Does Reproductive Potential Of Red Snapper In The Northern Gulf Of Mexico Differ Among Natural And Artificial Habitats?, Hilary Day Glenn Jan 2014

Does Reproductive Potential Of Red Snapper In The Northern Gulf Of Mexico Differ Among Natural And Artificial Habitats?, Hilary Day Glenn

LSU Master's Theses

This study compares the reproductive potential of red snapper (Lutjanus campechanus) at artificial and natural habitats. Natural habitats are areas of vertical relief created from biogenic/geologic processes that are thought to be the historical centers of abundance for red snapper in the northern Gulf of Mexico. Red snapper were collected from 2011 to 2013 at three natural habitat sites and two artificial habitat oil and gas platform sites. The mean gonadosomatic indices (GSI), maturity at size and age, spawning indicators, batch fecundity, spawning frequency, and annual fecundity for red snapper at each habitat were analyzed to examine reproductive potential among …

Go to article

Method For Synchrotron X-Ray Computed Tomographic Imaging Of Biofilms In Porous Media, Corey Matthew Klibert Jan 2014

Method For Synchrotron X-Ray Computed Tomographic Imaging Of Biofilms In Porous Media, Corey Matthew Klibert

LSU Master's Theses

Modeling of biofilms in porous media at pore scale resolution has been hindered by the lack of available experimental techniques to non-destructively image biofilm structure at these resolutions. Researchers have relied upon simulation rather than experimentation to produce pore-scale biofilm models, using simplifying assumptions governing microbial growth such as Monod kinetics and random biofilm seeding locations to generate biofilms in simulated environments. This study investigated the use of absorption-edge synchrotron X-ray computed microtomography (SXCMT) in combination with a contrast agent, Lugol’s iodine solution (10% KI/5% I2), to nondestructively obtain three-dimensional images of biofilms at pore-scale resolution. The study examined and …

Go to article

Is The Foliar Yellow Vein Of Some Ornamental Plants Caused By Plant Viruses?, Favio Eduardo Herrera Jan 2014

Is The Foliar Yellow Vein Of Some Ornamental Plants Caused By Plant Viruses?, Favio Eduardo Herrera

LSU Master's Theses

Plant viruses have shown to be the cause of the yellow vein symptoms on the foliage of several ornamental plants. In this study five ornamental plants: oxalis (Oxalis debilis var. corymbosa) cv. Golden Veined Oxalis, geranium (Pelargonium peltatum) cv. Crocodile, pseuderanthemum (Pseuderanthemum carruthersii) cv. Golden Net Bush (narrow leaf and broad leaf variants), honeysuckle (Lonicera japonica) cv. Yellow Net Honeysuckle and coleus (Solenostemon scutellarioides) cv. Electric Lime, showing foliar yellow vein were used. Graft transmissions indicated that, except for coleus, the foliar yellow vein of all other plants was caused by infectious agents, likely plant viruses. With the exception of …

Go to article

Relationship Of Total Phenolic Contents, Dpph Activities And Anti-Lipid-Oxidation Capabilities Of Different Bioactive Beverages And Phenolic Antioxidants, Yongchao Zhu Jan 2014

Relationship Of Total Phenolic Contents, Dpph Activities And Anti-Lipid-Oxidation Capabilities Of Different Bioactive Beverages And Phenolic Antioxidants, Yongchao Zhu

LSU Master's Theses

Polyphenol compounds are widely used as antioxidants in food processing. The conventional phenolic content, scavenging DPPH free radical assays have been widely used for antioxidant evaluation. This research aimed to study the correlation between scavenging DPPH (2, 2-diphenyl-1-picrylhydrazyl) free radical activity, total phenolic content and anti-lipid-oxidation capability of natural and synthetic antioxidants and four beverages drinks. Synthetic phenol antioxidants, BHA (butylated hydroxyanisole), BHT (butylated hydroxytoluene), PG (propyl gallate), TBHQ (tert-butylhydroquinone) and naturally occurring phenolics ƒÑ-T(£\-tocopherol), CA(Chlorogenic acid), GA(Gallic acid), QCT(Quercetin), RSV(Resveratrol), and SA(Syringic acid) were examined for their total phenolic content (TPC) and scavenging DPPH free radical activity. The anti-lipid-oxidation …

Go to article

Cardiovascular Tolerance And Safety Of Intravenous Lidocaine In The Broiler Chicken (Gallus Gallus Domesticus), Joao Manuel Lemos Brandao Jan 2014

Cardiovascular Tolerance And Safety Of Intravenous Lidocaine In The Broiler Chicken (Gallus Gallus Domesticus), Joao Manuel Lemos Brandao

LSU Master's Theses

Lidocaine, an amide local anesthetic agent, is commonly used in mammals, including humans. There is a general assumption that birds are more sensitive to lidocaine than mammals. Relatively low doses of lidocaine have been suggested to cause toxic effects in birds. While this information appears to be anecdotal, it has been perpetuated in the literature. The overall objective of this thesis research was to determine the tolerance and safety of intravenous lidocaine in broiler chickens. To assess the cardiovascular effects of lidocaine, relative changes on heart rate and mean blood pressure were calculated. Clinically significant cardiovascular effects were defined as …

Go to article

A Comparison Of Calcium And Magnesium Ratios In Soilless Media For Optimum Vegetable Production Irrigated With Alkaline Ph Water, Sarah E. Bertrand Jan 2014

A Comparison Of Calcium And Magnesium Ratios In Soilless Media For Optimum Vegetable Production Irrigated With Alkaline Ph Water, Sarah E. Bertrand

LSU Master's Theses

Home gardeners in areas with alkaline water sources do not have means of acidifying water for vegetable production. A solution to achieving optimal yields with alkaline irrigation water is to use specialized media; however, current media available does not meet these needs. New media recipes with varied levels (0 to 8 lbs/yd3) and sources of Ca (dolomitic lime, calcium sulfate) and Mg (dolomitic lime, magnesium sulfate) were tested using alkaline irrigation on lettuce, cabbage, and cauliflower crops under high tunnel and on nursery yard sites. Media treatments with an 80:20 bark:peat and 7.1 kg/m3 slow release 15-9-11 base mix and …

Go to article

Pah Degradation In Wetland Soils As Influenced By Redox Potential, Haoxuan Zhang Jan 2014

Pah Degradation In Wetland Soils As Influenced By Redox Potential, Haoxuan Zhang

LSU Master's Theses

Polycyclic aromatic hydrocarbons (PAHs) are a common contaminant in wetland soils. They are a group of compounds widely distributed in the environment and tend to accumulate in soils. Major contribution to removal of PAHs is biological degradation. For investigating the biodegradation potential of PAHs influenced by tidal actions, equipment was built for simulating the tidal actions, and concentrations of phenanthrene, pyrene, and benzo[e]pyrene were added to the soils samples which were collected from wetland. Experiments were then conducted over 120 days. Redox potentials and PAHs concentrations were measured and analyzed. Results are concluded: 1) influenced by tidal action, phenanthrene, pyrene, …

Go to article

Mechanical Behavior Of Frp-Confined Self-Healing Concrete, Yueqiang Sui Jan 2014

Mechanical Behavior Of Frp-Confined Self-Healing Concrete, Yueqiang Sui

LSU Master's Theses

This research study is motivated by the need to reduce the costs of maintenance and repair of the aging transportation infrastructure in the US. The proposed approach is to use self-healing concrete. The objective of this study is to test the hypothesis that composite action due to fiber reinforced polymer (FRP) confinement of cylindrical concrete specimens may improve the self-repairing properties of self-healing concrete materials. Sodium silicate (Na2SiO3) is utilized as healing agent in this research. Concrete cylinders with 0.0%, 1.0%, 2.5%, and 5.0% of sodium silicate (SS) by weight of cement were cast and tested to evaluate the effectiveness …

Go to article

Decomposition And Entomological Associations Of Swine In Louisiana Micro-Environments, Rachael Ann Farris Jan 2014

Decomposition And Entomological Associations Of Swine In Louisiana Micro-Environments, Rachael Ann Farris

LSU Master's Theses

Flies are commonly used as forensic indicators of an approximate time of death. This measurement of postmortem interval is influenced by factors such as climate and the environment in which the remains are placed. Each environment has its own set of influences that can accelerate or hinder the rate of decomposition. Remains left on dry land will decompose at a faster rate than remains in water due to the accessibility of the remains to scavengers and necrophagus insects. This research serves to provide a start to research into decomposition in the swamp environment of southern Louisiana. Three fetal pigs were …

Go to article

Legacy Phosphorus Implications In The Lake Pontchartrain Estuary Sediment Due To The 2011 Bonnet Carre Spillway Opening, Nhan Thanh Nguyen Jan 2014

Legacy Phosphorus Implications In The Lake Pontchartrain Estuary Sediment Due To The 2011 Bonnet Carre Spillway Opening, Nhan Thanh Nguyen

LSU Master's Theses

Phosphorus (P) is an essential nutrient for life and excess P in aquatic systems can trigger algal blooms. Nutrient-rich Mississippi River water is diverted into the Lake Pontchartrain estuary (LPE) periodically through the Bonnet Carré Spillway (BCS) to avoid downstream flooding to the city of New Orleans, Louisiana and can significantly increase the internal P load in the sediment. A sequential P fractionation procedure was performed on sediments collected before the opening and after the closing of the 2011 BCS operation to understand the role of these large river diversions on P dynamics. Before the 2011 BCS opening, 10,368 Mt …

Go to article

A Treatment Planning Comparison Of Volumetric Modulated Arc Therapy And Proton Therapy For A Sample Of Breast Cancer Patients Treated With Post-Mastectomy Radiotherapy, Margaret Hernandez Jan 2014

A Treatment Planning Comparison Of Volumetric Modulated Arc Therapy And Proton Therapy For A Sample Of Breast Cancer Patients Treated With Post-Mastectomy Radiotherapy, Margaret Hernandez

LSU Master's Theses

Purpose: The delivery of post-mastectomy radiotherapy (PMRT) can be challenging for patients with left-sided breast cancer due to the planning target volume (PTV) size and proximity to critical organs. This study investigates the use of protons, both passively scattered (PS) and intensity modulated proton therapy (IMPT), for PMRT in a clinically-representative cohort of patients, and quantitatively compares the predicted outcomes of volumetric modulated photon arc therapy (VMAT) to those of proton therapy to develop an evidence-based rationale for selecting a treatment modality for PMRT patients. Methods: Eight left-sided PMRT patients previously treated at our clinic with VMAT were included in …

Go to article

Teaching Climate Literacy Using Geospatial Tools, Steven L. Babcock Jan 2014

Teaching Climate Literacy Using Geospatial Tools, Steven L. Babcock

LSU Master's Theses

Antarctica is the world’s coldest, driest and windiest continent. It is a harsh environment that few people will ever see but it is a very important part of our Earth system. Over the past 34 million years the climate in Antarctica has deteriorated from one that supported lush vegetation to the conditions observed today. By studying this trend and the associated changes to ice and vegetation we can gain critical insight into climate changes taking place today. This thesis presents three pieces of curricula that will help students and the general public understand some of the research currently underway in …

Go to article

Does The Jigsaw Method Improve Student Conceptual Knowledge In Physical Science?, Althea Alisa Morgan Jan 2014

Does The Jigsaw Method Improve Student Conceptual Knowledge In Physical Science?, Althea Alisa Morgan

LSU Master's Theses

ABSTRACT The goal of my research is to determine if the Jigsaw Method has an effect on student conceptual knowledge of Physical Science in a classroom setting that predominately uses cooperative learning. The assessment instruments that were given in pretest and posttest format to assess student knowledge were the Matter Concept Inventory (MCI) and Edusoft Assessments. The research study group consisted of two sections of a ninth grade Physical Science class (N = 42) in a rural high school in Louisiana. As an intervention prior to the study, students were introduced to working in cooperative learning groups. The students in …

Go to article

Bone Modification In Male To Female Transgender Surgeries: Considerations For The Forensic Anthropologist, Shelby Buchanan Jan 2014

Bone Modification In Male To Female Transgender Surgeries: Considerations For The Forensic Anthropologist, Shelby Buchanan

LSU Master's Theses

No forensic anthropological standards exist for the identification of transsexual individuals from skeletal material. In fact, current standards produce inaccurate biological profiles for transsexuals. The reason being that current standard for ascription of sex from skeletal remains relies on pelvic morphology. Positive identification of unidentified individuals relies on the accuracy of the biological profile, which includes sex, provided by the forensic anthropologist. In the case of male-to-female (MTF) transsexuals, ascription of sex based on pelvic morphology will result in an inaccurate assessment of sex. This study, therefore, attempts to determine whether or not there exists evidence in the skeleton of …

Go to article

First Prev Next Last