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Stellar Nucleosynthesis: Direct Measurement Of The Neutron-Capture Cross Sections Of Stable Germanium Isotopes And Design Of A Next Generation Ion Trap For The Study Of Beta-Delayed Neutron Emission, Alexander Laminack

LSU Doctoral Dissertations

Knowledge of stellar nuclear reaction rates is critical to understanding the cosmic origins of the abundances of elements. In order to determine these reaction rates, accurate measurements of nuclear cross sections are needed. This thesis presents the results of an experiment to directly measure the neutron capture cross sections of 70-Ge, 72-Ge, 74-Ge, and 76-Ge. These measurements were performed at the Los Alamos Neutron Science CEnter (LANSCE) using the Detector for Advanced Neutron Capture Experiments (DANCE). This is the first direct measurement for many of these isotopes across the neutron energy spectrum of 10 eV to 1 MeV using the …

Unprepared To Be Culturally Responsive: An Examination Of Secondary Esl Educators In Rural Louisiana, Danielle Marie Butcher

LSU Doctoral Dissertations

The purpose of this study was to examine the problem of instructing English learners in a rural Louisiana district. The following questions guided this study: (1) How do the teachers perceive their pre-service and in-service training for English learners?, (2) How do the teachers perceive their ability to implement culturally responsive pedagogical practices for English learners?, (3) How do the teachers perceive the district’s approach to tangible, informational, and emotional supports for English learners?, and (4) What are the teachers’ perceptions, if any, of sociocultural inequities faced by English learners? And how, if any, do these sociocultural inequities affect the …

Reproductive Biology And Trophic Niche Of Hardhead Catfish In The Northern Gulf Of Mexico, Lucas G. Pensinger

LSU Master's Theses

Generally, marine fishes have very high fecundity with each female producing many small eggs which hatch into small larvae. However, Ariopsis felis, a species of marine catfish common to coastal Louisiana, has low fecundity and produces the largest eggs of the teleost fishes. Despite wide range and generally high abundance, we know very little of A. felis biology and population. The few existing studies of A. felis are older and often have questionable or unclear methodology.

I examined four aspects of A. felis reproductive biology: 1) reproductive timing,

2) fecundity, 3) length at first maturity, and 4) mouth brooding. …

Development And Validation Of A Simplified Transient Two-Phase Flow Model For Any Pipe Inclination, Ligia Tornisiello

LSU Master's Theses

This study describes the development and validation of an improved simplified model for transient two-phase flow for any pipe inclination. The simplified model proposed has been validated with field-scale test well and laboratorial data, and also compared to the state-of-the-art commercial simulator for transient two-phase flow in pipes. The results of the simplified model showed an agreement within the range of ±30% for the holdup predictions for 65% of the scenarios, and an agreement within the range of ±30% for the pressure predictions for 82% of the scenarios considered in this work.

In the oil and gas industry, transient two-phase …

Concentrations, Sources And Health Risks Of Particulate Matter In Southeast Us: Current Status And Future Changes, Fenglin Han

LSU Doctoral Dissertations

Evaluation of long-term air quality trends and prediction of future air quality may help to design and demonstrate effectiveness of control strategies and guide future air quality management. As one of the six criteria air pollutants (CAPs) regulated by the US Environmental Protection Agency (EPA), particulate matter with aerodynamic diameter of 2.5 µm or less (PM_2.5) is of great interests since it has adverse effects on human health, visibility and climate. This study aims to understand the current status and future changes in concentrations, sources, and health risks of PM_2.5 in Southeast US. Firstly, observations were analyzed …

Ageism And Embodied Stereotypes: A Study Of Adult Learners In Community College At Midlife, Marla Jane Erwin

LSU Doctoral Dissertations

Adult students are generally classified as a single group for study, yet developmental psychologists recognize separate developmental periods during adulthood that suggest adult students at midlife may experience development within higher education differently that younger adult students, in part due to ageism expressed at individual, institutional and internalized levels. This project applies the concept of lifespan developmental periods to distinguish students at midlife as a focus of inquiry using a mixed method design. Twenty-nine faculty and 205 students responded to the Relating to Older People Evalution (ROPE; Cherry & Palmore, 2008) to assess self-reports of both positive and negative ageist …

Liability Of The Structural Engineer: Establishing, Quantifying, And Managing Risks, Justin Thomas Ittmann

LSU Doctoral Dissertations

Liability is an important topic to all practicing professionals—including practicing engineers. However, the topic of liability does not receive the necessary attention required relative to other professions. Further, engineers that desire to learn more about liability in relation to their practice do not have many university options within an engineering curriculum or from outside materials available to a non-legally trained engineer. The goal of the study is to provide a comprehensive overview of liability directed towards an intelligent practicing engineer, while avoiding unnecessary over-simplification of the material. This study initially provides an in depth survey of the legal standard of …

Chronicle Of A Tragedy: A Comparison Of Early Modern Iberian Literature To La Manada, Graceanne Lacombe

Honors Theses

No abstract provided.

Synthesis Of Lamno3 & Ceo2-Mnox Nanocrystals For Selective Catalytic Reduction, Joseph Lane

Honors Theses

No abstract provided.

Decriminalizing The Mentally Ill In America: An Examination Of The Overrepresentation Of Mentally Ill Citizens Behind Bars And A Proposal To Combat This Injustice, Geraghty Alch

Honors Theses

No abstract provided.

The Lonely Only: An Analysis Of The Theorizing Of United States Quota Culture Competiveness On The Modern-Day Black Woman, Russell Chamblee Wilder

Honors Theses

No abstract provided.

Strategies For Assisting Refugees: Repatriation Versus Resettlement, Hannah Cottrell

Honors Theses

No abstract provided.