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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 …

Automatic Shoreline Digitization And Mesh Element Sizing For Hydrodynamic Modeling, Henok Kefelegn

LSU Doctoral Dissertations

The first and most critical step in any coastal hydrodynamics and transport process modeling is identifying land-water boundaries. In a coastal wetland, this has always been a challenge due to the complexity of the wetland and lack of efficient methods, calling for efficient and effective methods to extract and digitize the shorelines. While coastline feature extraction has been increasingly researched, its application in hydrodynamic and environmental modeling, without morphological adjustment, remains limited and suboptimal. Further, there has been a paucity of cost-effective, contextually adaptive and high-quality methods to generate meshes, especially for coastal hydrodynamic modeling. This study has developed and …

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 …

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 …

Obesity Medications In Development, Candida J. Rebello, Frank L. Greenway

Clinical Research Faculty Publications

Introduction: Obesity is compounded by a neurobiology that is resistant to weight loss. Therefore, the development of pharmacotherapies to address the pathology underlying the dysregulation of energy homeostasis is critical. Areas covered: This review examines selected clinical trial evidence for the pharmacologic treatment of obesity and provides an expert opinion on anti-obesity drug development. The article includes the outcomes of anti-obesity medications that have been evaluated in clinical trials but have not yet received approval from the U.S. Food and Drug Administration. The mechanisms of action of glucagon-like peptide-1 agonists and co-agonists, diabetes medications being investigated for weight loss, and …

Geometry And Topology Of Estuary And Braided River Channel Networks Automatically Extracted From Topographic Data, Matthew Hiatt

Faculty Publications

No abstract provided.

Influence Of Macrobenthos (Meretrix Meretrix Linnaeus) On Erosion-Accretion Processes In Intertidal Flats: A Case Study From A Cultivation Zone, B. Shi, P.D. Pratolongo, Y. Du, J. Li, S.L. Yang, J. Wu, K. Xu, Y.P. Wang

Faculty Publications

No abstract provided.

Impaired Purine Homeostasis Plays A Primary Role In Trimethoprim-Mediated Induction Of Virulence Genes In Burkholderia Thailandensis, Sudarshan S. Thapa, Anne Grove

Faculty Publications

© 2020 John Wiley & Sons Ltd One of the most commonly prescribed antibiotics against Burkholderia infections is co-trimoxazole, a cocktail of trimethoprim and sulfamethoxazole. Trimethoprim elicits an upregulation of the mal gene cluster, which encodes proteins involved in synthesis of the cytotoxic polyketide malleilactone; trimethoprim does so by increasing expression of the malR gene, which encodes the activator MalR. We report that B. thailandensis grown on trimethoprim exhibited increased virulence against Caenorhabditis elegans. This enhanced virulence correlated with an increase in expression of the mal gene cluster. Notably, inhibition of xanthine dehydrogenase by addition of allopurinol led to similar …

Improving Natural Product Research Translation: From Source To Clinical Trial, Barbara C. Sorkin, Adam J. Kuszak, Gregory Bloss, Naomi K. Fukagawa, Freddie Ann Hoffman, Mahtab Jafari, Bruce Barrett, Paula N. Brown, Frederic D. Bushman, Steven J. Casper, Floyd H. Chilton, Christopher S. Coffey, Mario G. Ferruzzi, D. Craig Hopp, Mairead Kiely, Daniel Lakens, John B. Macmillan, David O. Meltzer, Marco Pahor, Jeffrey Paul, Kathleen Pritchett-Corning, Sara K. Quinney, Barbara Rehermann, Kenneth D.R. Setchell, Nisha S. Sipes, Jacqueline M. Stephens, D. Lansing Taylor, Hervé Tiriac, Michael A. Walters, Dan Xi, Giovanna Zappalá, Guido F. Pauli

Faculty Publications

© 2019 Federation of American Societies for Experimental Biology While great interest in health effects of natural product (NP) including dietary supplements and foods persists, promising preclinical NP research is not consistently translating into actionable clinical trial (CT) outcomes. Generally considered the gold standard for assessing safety and efficacy, CTs, especially phase III CTs, are costly and require rigorous planning to optimize the value of the information obtained. More effective bridging from NP research to CT was the goal of a September, 2018 transdisciplinary workshop. Participants emphasized that replicability and likelihood of successful translation depend on rigor in experimental design, …

German Americans On The Middle Border: From Antislavery To Reconstruction, 1830 ̶ 1877, David T. Dixon

Civil War Book Review

Following in a tradition of regional studies of nineteenth century German Americans from historians like Kathleen Niels Conzen, Stanley Nadel, and Walter Kamphoefner comes this ambitious effort from a new scholar in the field. Zachary Garrison counts Lee Ann Whites and Christopher Phillips among his mentors, so it is no surprise that his first book is well organized, convincingly argued, and clearly written.

Blind No More: African American Resistance, Free-Soil Politics, And The Coming Of The Civil War, Stephen E. Maizlish

Civil War Book Review

Jonathan Daniel Wells’ Blind No More: African American Resistance, Free-Soil Politics, and the Coming of the Civil Waris based on the Eugenia Dorothy Blount Lamar Lectures that Wells delivered in October 2017 at Mercer University in Georgia. Wells declares that his goal in this volume is to resolve the ongoing “struggle” in the United States to appreciate the role African Americans played in the sectional conflict that preceded the Civil War. By positioning African Americans at the “center of Civil War causation,” Wells believes he can achieve his goal and grant African Americans, slave and free, their rightful place …

The Great Partnership: Robert E. Lee, Stonewall Jackson, And The Fate Of The Confederacy, Chris Mackowski

Civil War Book Review

The cover of Christian Keller’s latest book, The Great Partnership, features a Mort Künstler painting titled Tactics and Strategy. A fatherly Robert E. Lee, seated on a crackerbox, rests a bare hand on the gloved forearm of Stonewall Jackson, crouching beside him and looking attentively at his commander. The 2002 painting captures a key moment in their partnership: the campfire-lit evening of May 1, 1863, at Chancellorsville. The painting’s title suggests their relationship: Jackson the tactician and Lee the strategist.

Searching For Black Confederates: The Civil War’S Most Persistent Myth, Sharon A. Roger-Hepburn

Civil War Book Review

Countless anecdotes, narratives, rumors, half-truths, and myths have circulated since the Civil War. Perhaps the most persistent is the notion that thousands of free and enslaved black men fought as soldiers for the Confederate Army. So-called Black Confederates have been at the center of controversy and debate for decades, particularly in the realm of public opinion. Kevin Levin effectively challenges this myth in his recent book, Searching for Black Confederates. In an extensively researched and readable manner, Levin convincingly refutes the assertion that large numbers of African Americans served and fought as true soldiers for the Confederate States.

Phlebotomines (Diptera: Psychodidae) From A Urban Park Of Belém, Pará State, Northern Brazil And Potential Implications In The Transmission Of American Cutaneous Leishmaniasis, Yetsenia D.V. Sánchez Uzcátegui, Thiago Vasconcelos Dos Santos, Fernando T. Silveira, Patricia K.S. Ramos, Eduardo José M. Dos Santos, Marinete M. Póvoa, Lane Foil

Faculty Publications

© 2019 The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. In urban ecotourism parks, the life cycle of American cutaneous leishmaniasis (ACL) agents can remain established, where phlebotomines may comprise potential risks for visitors. The present study aimed to survey the phlebotomine fauna of a forest park 'Bosque Rodriques Alves-Jardim Botânico da Amazônia' (BRAJBA), in the urban area of Belém, Brazil. The park was monthly surveyed in 2018 using CDC light traps placed in ground and canopy strata. Leishmania spp. isolated from dissected females were characterized by polymerase chain reaction-restriction fragment length polymorphism …

Hepatic Ikkε Expression Is Dispensable For High-Fat Feeding-Induced Increases In Liver Lipid Content And Alterations In Glucose Tolerance, J. Jason Collier, Heidi M. Batdorf, Tamra M. Mendoza, David H. Burk, Thomas M. Martin, Jingying Zhang, Randall L. Mynatt, Susan J. Burke

Faculty Publications

© 2020 the American Physiological Society. There are endocrine and immunological changes that occur during onset and progression of the overweight and obese states. The inhibitor of nuclear factor-κB kinase-ε (IKKε) was originally described as an inducible protein kinase; whole body gene deletion or systemic pharmaceutical targeting of this kinase improved insulin sensitivity and glucose tolerance in mice. To investigate the primary sites of action associated with IKKε during weight gain, we describe the first mouse line with conditional elimination of IKKε in the liver (IKKεAlb-/-). IKKεAlb-/- mice and littermate controls gain weight, show similar changes in body composition, and …

An Efficient And Computationally Robust Statistical Method For Analyzing Case-Control Mother–Offspring Pair Genetic Association Studies, Hong Zhang, Bhramar Mukherjee, Victoria Arthur, Gang Hu, Hagit Hochner, Jinbo Chen

Population and Public Health Science Faculty Publications

Case-control mother–offspring pair design has been widely adopted for studying early-life and women’s pregnancy health. It allows assessment of pre-and perinatal environmental risk factors as well as both maternal and offspring genetic risk factors. Data arising from this design is routinely analyzed using standard prospective logistic regression. Such data has two unique fea-tures: the offspring genotypes are not correlated with maternal environmental risk factors given maternal genotypes, and offspring and maternal genotypes are related through mendelian transmission. In this work, built upon a novel regression model relating maternal genotypes to environmental risk factors, we proposed a novel retrospective likelihood method …

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

Honors Capstones

No abstract provided.

Rotation And Spin And Position Operators In Relativistic Gravity And Quantum Electrodynamics, Robert F. O’Connell

Faculty Publications

First, we examine how spin is treated in special relativity and the necessity of introducing spin supplementary conditions (SSC) and how they are related to the choice of a center-of-mass of a spinning particle. Next, we discuss quantum electrodynamics and the Foldy–Wouthuysen transformation which we note is a position operator identical to the Pryce–Newton–Wigner position operator. The classical version of the operators are shown to be essential for the treatment of classical relativistic particles in general relativity, of special interest being the case of binary systems (black holes/neutron stars) which emit gravitational radiation.

Full Orbital Solution For The Binary System In The Northern Galactic Disc Microlensing Event Gaia16aye, Wyrzykowski, P. Mróz, K. A. Rybicki, M. Gromadzki, Z. Kołaczkowski, M. Zieliński, P. Zieliński, N. Britavskiy, A. Gomboc, K. Sokolovsky, S. T. Hodgkin, L. Abe, G. F. Aldi, A. Almannaei, G. Altavilla, A. Al Qasim, G. C. Anupama, S. Awiphan, E. Bachelet, V. Baklş, S. Baker, S. Bartlett, P. Bendjoya, K. Benson, I. F. Bikmaev, G. Birenbaum, N. Blagorodnova, S. Blanco-Cuaresma, S. Boeva, A. Z. Bonanos, V. Bozza, D. M. Bramich, I. Bruni

Faculty Publications

Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light curve exhibited five distinct brightening episodes, reaching up to I? =? 12 mag, and it was covered in great detail with almost 25 000 data points gathered by a network of telescopes. We present the photometric and spectroscopic follow-up covering 500 days of the event evolution. We employed a full Keplerian binary orbit microlensing model combined with the motion of Earth and Gaia around the Sun …

Louisiana Agriculture Winter, 2020, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Northwest- Winter 2020, Lsu Agcenter

Horticulture Hints

No abstract provided.

Northeast- Winter 2020, Lsu Agcenter

Horticulture Hints

No abstract provided.

Central- Winter 2020, Lsu Agcenter

Horticulture Hints

No abstract provided.

Southwest- Winter 2020, Lsu Agcenter

Horticulture Hints

No abstract provided.

Southeast- Winter 2020, Lsu Agcenter

Horticulture Hints

No abstract provided.

Nmr Studies Of The Ground States Of Ni50-Xcoxmn35in15 (X=1, 2.5) And Ni45co5mn37in13 Heusler Alloys, Anil Aryal, Igor Dubenko, Sudip Pandey, Jing Han Chen, Saikat Talapatra, Vojtech Chlan, Helena Stepankova, Vladimir Matveev, Mikhail Blinov, Valerii Prudnikov, Alexander Granovsky, Erkki Lähderanta, Shane Stadler, Naushad Ali

Faculty Publications

Three temperature-induced phase transitions at T=T1, TM/TA, and TC, related to the ferromagnetic order of the martensitic phase (FMMP), martensitic (structural) transitions (MT), and the ferromagnetic order of the austenitic phase (FMAP), respectively, have been observed in the off-stoichiometric Heusler alloys, Ni50-xCoxMn35In15 (x=1, 2.5) and Ni45Co5Mn37In13. The phase transitions temperatures are found to be depended on alloy composition. A kinetic arrest of the AP was observed for Ni47.5Co2.5Mn35In15 in the magnetization measurements during field-cooling cycle (FCC) at 50 kOe. Depending upon the cooling protocols, ZFC and FCC (at H = 50 kOe), two different ground states of the alloys can …

Who’S Afraid Of Ebola? Epidemic Fires And Locative Fears In The Information Age, W. Shrum, J. Aggrey, A. Campos, J. Pamplona Da Costa, J. Joseph, P. Kreimer, R. Kroeger, L. Medina, P. Miller, A. Palackal, A. Pandal De La Peza, A. Traore

Faculty Publications

Epidemics have traditionally been viewed as the widespread occurrence of infectious disease within a community, or a sudden increase above what is typical. But modern epidemics are both more and less than the diffusion of viral entities. We argue that epidemics are 'fire objects', using a term coined by Law and Singleton: They generate locative fears through encounters that focus attention on entities that are unknown or imprecisely known, transforming spaces and humans into indeterminate dangers, alternating appearance and absence. The Ebola epidemic of 2014 had more complex impacts than the number of infections would suggest. We employ multi-sited qualitative …

Artificial Intelligence And Covid-19: Deep Learning Approaches For Diagnosis And Treatment, M. B. Jamshidi, A. Lalbakhsh, J. Talla, Z. Peroutka, F. Hadjilooei, P Lalbakhsh, M. Jamshidi, L. La Spada, M. Mirmozafari, M. Dehghani, A. Sabet, Sa. Roshani, So. Roshani, N. Bayat-Makou, B. Mohamadzade, Z. Malek, A. Jamshidi, S. Kiani, H. Hashemi-Dezaki, W. Mohyuddin

Faculty Publications

COVID-19 outbreak has put the whole world in an unprecedented difficult situation bringing life around the world to a frightening halt and claiming thousands of lives. Due to COVID-19 & x2019;s spread in 212 countries and territories and increasing numbers of infected cases and death tolls mounting to 5,212,172 and 334,915 (as of May 22 2020), it remains a real threat to the public health system. This paper renders a response to combat the virus through Artificial Intelligence (AI). Some Deep Learning (DL) methods have been illustrated to reach this goal, including Generative Adversarial Networks (GANs), Extreme Learning Machine (ELM), …

Large-Scale Mass Wasting On The Miocene Continental Margin Of Western India, Sarah K. Dailey, Peter D. Clift, Denise K. Kulhanek, Jerzy Blusztajn, Claire M. Routledge, Gérôme Calvès, Paul O'Sullivan, Tara N. Jonell, Dhananjai K. Pandey, Sergio Andò, Giovanni Coletti, Peng Zhou, Yuting Li, Nikki E. Neubeck, James A.P. Bendle, Sophia Aharonovich, Elizabeth M. Griffith, Gundiga P. Gurumurthy, Annette Hahn, Masao Iwai, Boo Keun Khim, Anil Kumar, A. Ganesh Kumar, Hannah M. Liddy, Huayu Lu, Mitchell W. Lyle, Ravi Mishra, Tallavajhala Radhakrishna, Rajeev Saraswat, Rakesh Saxena, Giancarlo Scardia, Girish K. Sharma, Arun D. Singh

Faculty Publications

© 2019 Geological Society of America. A giant mass-transport complex was recently discovered in the eastern Arabian Sea, exceeding in volume all but one other known complex on passive margins worldwide. The complex, named the Nataraja Slide, was drilled by International Ocean Discovery Program (IODP) Expedition 355 in two locations where it is ~300 m (Site U1456) and ~200 m thick (Site U1457). The top of this mass-transport complex is defined by the presence of both reworked microfossil assemblages and deformation structures, such as folding and faulting. The deposit consists of two main phases of mass wasting, each consisting of …

Active Deformation And Plio-Pleistocene Fluvial Reorganization Of The Western Kura Fold-Thrust Belt, Georgia: Implications For The Evolution Of The Greater Caucasus Mountains, Lasha Sukhishvili, Adam M. Forte, Giorgi Merebashvili, Joel Leonard, Kelin X. Whipple, Zurab Javakhishvili, Arjun Heimsath, Tea Godoladze

Faculty Publications

© The Author(s), 2020. Published by Cambridge University Press. Since Plio-Pleistocene time, southward migration of shortening in the eastern part of the Greater Caucasus into the Kura foreland basin has progressively formed the Kura fold-thrust belt and Alazani piggyback basin, which separates the Kura fold-thrust belt from the Greater Caucasus. Previous work argued for an eastward propagation of the Kura fold-thrust belt, but this hypothesis was based on coarse geological maps and speculative ages for units within the Kura fold-thrust belt. Here we investigate the initiation of deformation within the Gombori range in the western Kura fold-thrust belt and evaluate …