Digital Commons Network^™

Heat Flux From A Vapor-Dominated Hydrothermal Field Beneath Yellowstone Lake, Julia E. Favorito, Robert N. Harris, Robert A. Sohn, Shaul Hurwitz, Karen M. Luttrell

Faculty Publications

We report results from 149 heat flux measurements made over n ∼2-year interval at sites in and around a vapor-dominated geothermal field located at water depths of ∼100–120 m in Yellowstone Lake, Wyoming. Measurements of both in situ temperature and thermal conductivity as a function of depth were made with a 1 m probe via a remotely operated vehicle, and are combined to compute the vertical conductive heat flux. Inside the ∼55.5 × 10³ m² bathymetric depression demarcating the vapor-dominated field, the median conductive flux is 13 W m⁻², with a conductive output of 0.72 MW. …

Vr-Caps: A Virtual Environment For Capsule Endoscopy, Kağan İncetan, Ibrahim Omer Celik, Abdulhamid Obeid, Guliz Irem Gokceler, Kutsev Bengisu Ozyoruk, Yasin Almalioglu, Richard J. Chen, Faisal Mahmood, Hunter Gilbert, Nicholas J. Durr, Mehmet Turan

Faculty Publications

Current capsule endoscopes and next-generation robotic capsules for diagnosis and treatment of gastrointestinal diseases are complex cyber-physical platforms that must orchestrate complex software and hardware functions. The desired tasks for these systems include visual localization, depth estimation, 3D mapping, disease detection and segmentation, automated navigation, active control, path realization and optional therapeutic modules such as targeted drug delivery and biopsy sampling. Data-driven algorithms promise to enable many advanced functionalities for capsule endoscopes, but real-world data is challenging to obtain. Physically-realistic simulations providing synthetic data have emerged as a solution to the development of data-driven algorithms. In this work, we present …

Representations Of Female Agency In Medieval French Literature, Mathilde Pointiere

LSU Doctoral Dissertations

This dissertation examines the different ways authors portray female agency in medieval French literature. In focusing on three medieval writers, Chrétien de Troyes, Heldris de Cornouailles and Christine de Pizan, I contend that female agency arises as a result of trauma or crisis. I define my terms as follows: agency is the capacity and intention of performing actions on one’s own behalf. For a fictional character to have agency, therefore, she must be portrayed as having a sense of control and of being the owner of the action she executes. Additionally, I argue that as women characters assume their agency, …

Mental Imagery In Fear Extinction: A Multi-Component Examination Based On Behavioral, Physiological, And Neurological Measures, Xinrui Jiang

LSU Doctoral Dissertations

Imagery has long been utilized in clinical treatments of affective symptoms with the assumption that mental imagery can stand in for its perceptual counterpart and exert regulatory effects over emotional responses. While this assumption has its ground in theoretical framework of mental imagery supported by evidence of neurological overlaps between imagery and perception, and clinical applications of imagery interventions were found to be successful, very little has been done through means of experimental examinations.

This investigation began with a differential fear conditioning study (study 1) to simulate and assess imagery extinction. Results provided support for the efficacy of imagery exposure …

The Martyrdom And Monster-Ization Of The Mujahideen In The American Christian Mind, Katelyn Prescott

Honors Capstones

No abstract provided.

Green Alga Bicarbonate Transporter And Uses Thereof, James V. Moroney, Marylou C. Machingura, Joanna Bajsa-Hirschel

College of Science Patents

Provided herein are green alga Cia8 polypeptides and the polynucleotides that encode them. Also provided herein are transformed cells and transgenic plants that include one or more of the polynucleotides and/or polypeptides provided herein.

A Theoretical Calculation Of Stacking Fault Energy Of Ni Alloys: The Effects Of Temperature And Composition, Mohammad S. Dodaran, Shengmin Guo, Michael M. Khonsari, Nima Shamsaei, Shuai Shao

Faculty Publications

Combining cluster expansion (CE) method with one dimensional axial Ising model, this work investigated the effects of alloying elements and configurational variations due to temperature on the stacking fault energy (SFE) of FCC Ni binary alloys. Ensembles of large numbers of atomistic structures, each with more than ~400 atoms, were generated to consider sufficient long-range chemical disorder and temperature effects due to configurational entropy. A Monte Carlo Metropolis algorithm was used to generate these structures, whose energies were then evaluated based on the effective cluster interactions obtained from CE. As a baseline, this work had shown the SFE of pure …

Coilin Expression During Nucleolar Stress In The Drosophila Brain, Kathryn Rose Deleo

LSU Master's Theses

Impairment of ribosome biogenesis disrupts cellular homeostasis and, in the process, causes a state of nucleolar stress in a cell. This triggers human syndromes collectively known as ribosomopathies. One such ribosomopathy is the Treacher Collins syndrome (TCS) which causes congenital craniofacial birth defects and hearing loss in patients. In TCS migration of neural crest cells during development is hindered by the loss of the ribosome assembly factor, treacle, and consequent apoptosis of these progenitor cells. Modeling this disorder in Drosophila was previously accomplished by disruption of Nopp140, treacle’s closest equivalent in Drosophila. During nucleolar stress, the Mushroom Body neuroblast …

The One – Way (Agri)Cultural Mirror: A Case Study Of How Young Agriculturalists Understand And Experience Culture, Janiece M. Pigg

LSU Master's Theses

As the global economy continues to transform how society operates, cultural competence has become a buzzword in education, professional development, research, government, and healthcare (Gay, 1994; Gallus et al., 2014). Cross et al. (1989) developed the most accepted definition of cultural competence: “a set of congruent behaviors, attitudes, and policies that come together in a system, agency, or among professionals and enable that system, agency, or those professionals to work effectively in cross-cultural situations” (p. 13).

Despite this, little to no research has been devoted to understanding cultural competence in agriculture. Thus, a need emerged to describe the cultural competence …

Synthesis And Characterization Of Zein-Based Low Density Porous Absorbent (Zelda) For Oil Spill Recovery, Nathan P. Holley, Jin Gyun Lee, Kalliat T. Valsaraj, Bhuvnesh Bharti

Faculty Publications

Removal of spilled petroleum oil from water bodies using hydrophobic porous absorbent has garnered considerable attention due to the simplicity, large-scale adaptability and robustness of the process. However, the use of nonbiodegradable synthetic oil absorbent during cleanup has raised a secondary concern such as generating plastic pollutants that can accumulate in marine and other ecosystems. To encounter this potential hazard, there is a need to find new biocompatible alternatives to currently used non-degradable porous materials. Here we present ZEin-based Low Density porous Absorbent (ZELDA) synthesized from an emulsion templating method as a new class of naturally derived porous material with …

Tuned Mass Damper Design For Slender Masonry Structures: A Framework For Linear And Nonlinear Analysis, Marco Zucca, Nicola Longarini, Marco Simoncelli, Aly Mousaad Aly

Faculty Publications

The paper presents a proposed framework to optimize the tuned mass damper (TMD) design, useful for seismic improvement of slender masonry structures. A historical masonry chimney located in northern Italy was considered to illustrate the proposed TMD design procedure and to evaluate the seismic performance of the system. The optimization process was subdivided into two fundamental phases. In the first phase, the main TMD parameters were defined starting from the dynamic behavior of the chimney by finite element modeling (FEM). A series of linear time-history analyses were carried out to point out the structural improvements in terms of top displacement, …

Franz Delitzsch, The Jewish Jesus, And The Pattern Of History: A Nineteenth-Century Dialogue About Christians And Jews In Germany, Shelby Frank Myers

Honors Capstones

No abstract provided.

Defusing Polarization: The Politics Of Medicaid Expansion In Louisiana, Sarah Procopio

Honors Capstones

No abstract provided.

Development And Mechanical Characterization Of A Composite Biomaterial Made From Agricultural Waste Reinforcement In A Fungal Mycelium Matrix., John Adam Howe

Honors Capstones

No abstract provided.

Human Rights As A Means To Peace: Why The Un Security Council Should Lead On Human Rights, Arden Hooper

Honors Capstones

No abstract provided.

The Importance Of Therapist-Client “Matching” On Client Experiences, Alexandra Chetty

Honors Capstones

No abstract provided.

United States’ Education And The Creation Of The Neoliberal Subject, Sam Stewart

Honors Capstones

No abstract provided.

Representations Of Slavery At Louisiana Plantation Museums: Observations And Proposals For Change, Madeline Tinsley

Honors Capstones

No abstract provided.

The Investigation Of Young, Lineage Specific Alu Elements In The Owl Monkey (Aotus), Lydia Rewerts

Honors Capstones

No abstract provided.

Reversing The Regioselectivity Of Indole Addition To Cyclic Unsymmetrical Oxyallyl Cations: Construction Of Diaryl Quaternary Centers, Thomas Davis Curry Ii

Honors Capstones

No abstract provided.

Ceci N’Est Pas Qu’Une Banane: French Underdevelopment And Green Imperialism In The “Island Of Beautiful Waters”, Kelsie Guzik

Honors Capstones

No abstract provided.

The Influence Of Emotions On The Application Of Professional Skepticism: An Examination Of Accounting Students’ Perspectives, Jordon Grace Williams

Honors Capstones

No abstract provided.

Louisiana Agriculture Spring, 2021, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Measurements Of And + Charged-Current Cross-Sections Without Detected Pions Or Protons On Water And Hydrocarbon At A Mean Anti-Neutrino Energy Of 0.86 Gev, K. Abe, N. Akhlaq, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, D. Barrow, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blanchet, A. Blondel, S. Bolognesi, T. Bonus, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, D. Bravo Berguño, C. Bronner, S. Bron, A. Bubak, M. Buizza Avanzini, J. Calcutt, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia

Faculty Publications

We report measurements of the flux-integrated and + charged-current cross-sections on water and hydrocarbon targets using the T2K anti-neutrino beam with a mean beam energy of 0.86 GeV. The signal is defined as the (anti-)neutrino charged-current interaction with one induced and no detected charged pion or proton. These measurements are performed using a new WAGASCI module recently added to the T2K setup in combination with the INGRID Proton Module. The phase space of muons is restricted to the high-detection efficiency region, 400 and 30 , in the laboratory frame. An absence of pions and protons in the detectable phase spaces …

Calibration Of The Underground Muon Detector Of The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, J. M. Albury, I. Allekotte, A. Almela, J. Alvarez-Muñiz, R. Alves Batista, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, P. R. Araújo Ferreira, J. C. Arteaga Velázquez, H. Asorey, P. Assis, G. Avila, A. M. Badescu, A. Bakalova, A. Balaceanu, F. Barbato, R. J. Barreira Luz, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, T. Bister, J. Biteau, J. Blazek, C. Bleve

Faculty Publications

To obtain direct measurements of the muon content of extensive air showers with energy above 101 eV, the Pierre Auger Observatory is currently being equipped with an underground muon detector (UMD), consisting of 219 10 m2-modules, each segmented into 64 scintillators coupled to silicon photomultipliers (SiPMs). Direct access to the shower muon content allows for the study of both of the composition of primary cosmic rays and of high-energy hadronic interactions in the forward direction. As the muon density can vary between tens of muons per m close to the intersection of the shower axis with the ground to much …

Mechanical Quantum Sensing In The Search For Dark Matter, D. Carney, G. Krnjaic, D. C. Moore, C. A. Regal, G. Afek, S. Bhave, B. Brubaker, T. Corbitt, J. Cripe, N. Crisosto, A. Geraci, S. Ghosh, J. G.E. Harris, A. Hook, E. W. Kolb, J. Kunjummen, R. F. Lang, T. Li, T. Lin, Z. Liu, J. Lykken, L. Magrini, J. Manley, N. Matsumoto, A. Monte, F. Monteiro, T. Purdy, C. J. Riedel, R. Singh, S. Singh, K. Sinha, J. M. Taylor, J. Qin, D. J. Wilson, Y. Zhao

Faculty Publications

Numerous astrophysical and cosmological observations are best explained by the existence of dark matter, a mass density which interacts only very weakly with visible, baryonic matter. Searching for the extremely weak signals produced by this dark matter strongly motivate the development of new, ultra-sensitive detector technologies. Paradigmatic advances in the control and readout of massive mechanical systems, in both the classical and quantum regimes, have enabled unprecedented levels of sensitivity. In this white paper, we outline recent ideas in the potential use of a range of solid-state mechanical sensing technologies to aid in the search for dark matter in a …

The Effects Of Increasing The Number Of Voting Members On Parole Panels: A Case Study Of La Act 604 Of 2018, Miranda Campbell

Honors Capstones

No abstract provided.

Spring 2021 Catalog, Lsu Press

LSU Press Seasonal Catalogs

No abstract provided.

Baculovirus Translocation Through Maize: Examining A Novel Route For Insect Herbivore Infection, Peter Pierre Issa

Honors Capstones

No abstract provided.

High-Energy Emission From A Magnetar Giant Flare In The Sculptor Galaxy, M. Ajello, W. B. Atwood, M. Axelsson, L. Baldini, G. Barbiellini, M. G. Baring, D. Bastieri, R. Bellazzini, A. Berretta, E. Bissaldi, R. D. Blandford, R. Bonino, J. Bregeon, P. Bruel, R. Buehler, E. Burns, S. Buson, R. A. Cameron, P. A. Caraveo, E. Cavazzuti, S. Chen, C. C. Cheung, G. Chiaro, S. Ciprini, D. Costantin, M. Crnogorcevic, S. Cutini, F. D’Ammando, P. De La Torre Luque, F. De Palma, S. W. Digel, N. Di Lalla, L. Di Venere

Faculty Publications

Magnetars are the most highly magnetized neutron stars in the cosmos (with magnetic field 1013–1015 G). Giant flares from magnetars are rare, short-duration (about 0.1 s) bursts of hard X-rays and soft γ rays1,2. Owing to the limited sensitivity and energy coverage of previous telescopes, no magnetar giant flare has been detected at gigaelectronvolt (GeV) energies. Here, we report the discovery of GeV emission from a magnetar giant flare on 15 April 2020 (refs. 3,4 and A. J. Castro-Tirado et al., manuscript in preparation). The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope detected GeV γ rays …