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Louisiana Agriculture Magazine, Spring 2023 Apr 2023

Louisiana Agriculture Magazine, Spring 2023

Louisiana Agriculture

In this issue of Louisiana Agriculture, Carl Motsenbocker, the executive director of Seeds to Success, and Crystal Besse, the program director, explain how local food systems are seeing a resurgence. The Seeds to Success team details how the farm to school movement is assisting this growth. They also profile the people who work to make it possible — a teacher, farmers and an AgCenter Extension agent. In additional articles, researchers examine the economic benefits of farm to school programs as well as soil mixes for home gardeners and the media used by our consumer horticulture industry.

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Reduction Of Plasma Bcaas Following Roux-En-Y Gastric Bypass Surgery Is Primarily Mediated By Fgf21, Harsh Shah, Alyssa Kramer, Caitlyn A. Mullins, Marie Mattern, Ritchel B. Gannaban, R. Leigh Townsend, Shawn R. Campagna, Christopher D. Morrison, Hans Rudolf Berthoud, Andrew C. Shin Apr 2023

Reduction Of Plasma Bcaas Following Roux-En-Y Gastric Bypass Surgery Is Primarily Mediated By Fgf21, Harsh Shah, Alyssa Kramer, Caitlyn A. Mullins, Marie Mattern, Ritchel B. Gannaban, R. Leigh Townsend, Shawn R. Campagna, Christopher D. Morrison, Hans Rudolf Berthoud, Andrew C. Shin

Division of Basic Science Faculty Publications

Type 2 diabetes (T2D) is a challenging health concern worldwide. A lifestyle intervention to treat T2D is difficult to adhere, and the effectiveness of approved medications such as metformin, thiazolidinediones (TZDs), and sulfonylureas are suboptimal. On the other hand, bariatric procedures such as Roux-en-Y gastric bypass (RYGB) are being recognized for their remarkable ability to achieve diabetes remission, although the underlying mechanism is not clear. Recent evidence points to branched-chain amino acids (BCAAs) as a potential contributor to glucose impairment and insulin resistance. RYGB has been shown to effectively lower plasma BCAAs in insulin-resistant or T2D patients that may help …

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Genetic Susceptibility To Diabetic Kidney Disease Is Linked To Promoter Variants Of Xor, Qin Wang, Haiying Qi, Yiming Wu, Liping Yu, Rihab Bouchareb, Shuyu Li, Emelie Lassén, Gabriella Casalena, Krisztian Stadler, Kerstin Ebefors, Zhengzi Yi, Shaolin Shi, Fadi Salem, Ronald Gordon, Lu Lu, Robert W. Williams, Jeremy Duffield, Weijia Zhang, Yuval Itan, Erwin Böttinger, Ilse Daehn Apr 2023

Genetic Susceptibility To Diabetic Kidney Disease Is Linked To Promoter Variants Of Xor, Qin Wang, Haiying Qi, Yiming Wu, Liping Yu, Rihab Bouchareb, Shuyu Li, Emelie Lassén, Gabriella Casalena, Krisztian Stadler, Kerstin Ebefors, Zhengzi Yi, Shaolin Shi, Fadi Salem, Ronald Gordon, Lu Lu, Robert W. Williams, Jeremy Duffield, Weijia Zhang, Yuval Itan, Erwin Böttinger, Ilse Daehn

Division of Basic Science Faculty Publications

The lifetime risk of kidney disease in people with diabetes is 10–30%, implicating genetic predisposition in the cause of diabetic kidney disease (DKD). Here we identify an expression quantitative trait loci (QTLs) in the cis-acting regulatory region of the xanthine dehydrogenase, or xanthine oxidoreductase (Xor), a binding site for C/EBPβ, to be associated with diabetes-induced podocyte loss in DKD in male mice. We examine mouse inbred strains that are susceptible (DBA/2J) and resistant (C57BL/6J) to DKD, as well as a panel of recombinant inbred BXD mice, to map QTLs. We also uncover promoter XOR orthologue variants in humans associated with …

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Cerebrospinal Fluid Protein Markers Indicate Neuro-Damage In Sars-Cov-2-Infected Nonhuman Primates, Sudipa Maity, Meredith G. Mayer, Qingbo Shu, Hellmers Linh, Duran Bao, Robert V. Blair, Yanlin He, Christopher J. Lyon, Tony Y. Hu, Tracy Fischer, Jia Fan Apr 2023

Cerebrospinal Fluid Protein Markers Indicate Neuro-Damage In Sars-Cov-2-Infected Nonhuman Primates, Sudipa Maity, Meredith G. Mayer, Qingbo Shu, Hellmers Linh, Duran Bao, Robert V. Blair, Yanlin He, Christopher J. Lyon, Tony Y. Hu, Tracy Fischer, Jia Fan

Division of Basic Science Faculty Publications

Neurologic manifestations are among the most frequently reported complications of COVID-19. However, given the paucity of tissue samples and the highly infectious nature of the etiologic agent of COVID-19, we have limited information to understand the neuropathogenesis of COVID-19. Therefore, to better understand the impact of COVID-19 on the brain, we used mass-spectrometry–based proteomics with a data-independent acquisition mode to investigate cerebrospinal fluid (CSF) proteins collected from two different nonhuman primates, Rhesus Macaque and African Green Monkeys, for the neurologic effects of the infection. These monkeys exhibited minimal to mild pulmonary pathology but moderate to severe central nervous system (CNS) …

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Strategy For Pre-Clinical Development Of Active Targeting Microrna Oligonucleotide Therapeutics For Unmet Medical Needs, Marc Thibonnier, Sujoy Ghosh Apr 2023

Strategy For Pre-Clinical Development Of Active Targeting Microrna Oligonucleotide Therapeutics For Unmet Medical Needs, Marc Thibonnier, Sujoy Ghosh

Division of Basic Science Faculty Publications

We present here an innovative modular and outsourced model of drug research and development for microRNA oligonucleotide therapeutics (miRNA ONTs). This model is being implemented by a biotechnology company, namely AptamiR Therapeutics, in collaboration with Centers of Excellence in Academic Institutions. Our aim is to develop safe, effective and convenient active targeting miRNA ONT agents for the metabolic pandemic of obesity and metabolic-associated fatty liver disease (MAFLD), as well as deadly ovarian cancer.

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Environment-Tolerant Ionic Hydrogel–Elastomer Hybrids With Robust Interfaces, High Transparence, And Biocompatibility For A Mechanical–Thermal Multimode Sensor, Ya Lu, Yiying Yue, Qinqin Ding, Changtong Mei, Xinwu Xu, Shaohua Jiang, Shuijian He, Qinglin Wu, Huining Xiao, Jingquan Han Apr 2023

Environment-Tolerant Ionic Hydrogel–Elastomer Hybrids With Robust Interfaces, High Transparence, And Biocompatibility For A Mechanical–Thermal Multimode Sensor, Ya Lu, Yiying Yue, Qinqin Ding, Changtong Mei, Xinwu Xu, Shaohua Jiang, Shuijian He, Qinglin Wu, Huining Xiao, Jingquan Han

Faculty Publications

The human skin, an important sensory organ, responds sensitively to external stimuli under various harsh conditions. However, the simultaneous achievement of mechanical/thermal sensitivity and extreme environmental tolerance remains an enormous challenge for skin-like hydrogel-based sensors. In this study, a novel skin-inspired hydrogel–elastomer hybrid with a sandwich structure and strong interfacial bonding for mechanical–thermal multimode sensing applications is developed. An inner-layered ionic hydrogel with a semi-interpenetrating network is prepared using sodium carboxymethyl cellulose (CMC) as a nanofiller, lithium chloride (LiCl) as an ionic transport conductor, and polyacrylamide (PAM) as a polymer matrix. The outer-layered polydimethylsiloxane (PDMS) elastomers fully encapsulating the hydrogel …

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Regional Variation In Feeding Patterns Of Sheepshead (Archosargus Probatocephalus) In The Northwest Gulf Of Mexico, Elsa M. Gutierrez, Jeffrey D. Plumlee, Derek G. Bolser, Brad E. Erisman, R. J.David Wells Apr 2023

Regional Variation In Feeding Patterns Of Sheepshead (Archosargus Probatocephalus) In The Northwest Gulf Of Mexico, Elsa M. Gutierrez, Jeffrey D. Plumlee, Derek G. Bolser, Brad E. Erisman, R. J.David Wells

Faculty Publications

Feeding patterns of sheepshead, Archosargus probatocephalus, in the northwest Gulf of Mexico were examined from samples collected at two locations in Texas, USA; Galveston and Port Aransas. A total of 53 sheepshead stomachs (Galveston, n = 35; Port Aransas, n = 18) had their contents analyzed along with tissue samples from the muscle and liver for a stable isotope analysis (δ13C, δ15N, and δ34S) because they provide a contrast between short-term (liver) and long-term (muscle) measurements. Multiple species of amphipods made up the majority of the prey items in sheepshead from Galveston (%IRI = 61.79), whereas barnacles were the primary …

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Examining The Acute Glycemic Effects Of Different Types Of Structured Exercise Sessions In Type 1 Diabetes In A Real-World Setting: The Type 1 Diabetes And Exercise Initiative (T1dexi), Michael C. Riddell, Zoey Li, Robin L. Gal, Peter Calhoun, Peter G. Jacobs, Mark A. Clements, Corby K. Martin, Francis J. Doyle, Susana R. Patton, Jessica R. Castle, Melanie B. Gillingham, Roy W. Beck, Michael R. Rickels Apr 2023

Examining The Acute Glycemic Effects Of Different Types Of Structured Exercise Sessions In Type 1 Diabetes In A Real-World Setting: The Type 1 Diabetes And Exercise Initiative (T1dexi), Michael C. Riddell, Zoey Li, Robin L. Gal, Peter Calhoun, Peter G. Jacobs, Mark A. Clements, Corby K. Martin, Francis J. Doyle, Susana R. Patton, Jessica R. Castle, Melanie B. Gillingham, Roy W. Beck, Michael R. Rickels

Clinical Research Faculty Publications

OBJECTIVE Maintenance of glycemic control during and after exercise remains a major chal-lenge for individuals with type 1 diabetes. Glycemic responses to exercise may differ by exercise type (aerobic, interval, or resistance), and the effect of activity type on glycemic control after exercise remains unclear. RESEARCH DESIGN AND METHODS The Type 1 Diabetes Exercise Initiative (T1DEXI) was a real-world study of at-home exercise. Adult participants were randomly assigned to complete six structured aerobic, interval, or resistance exercise sessions over 4 weeks. Participants self-reported study and nonstudy exercise, food intake, and insulin dosing (multi-ple daily injection [MDI] users) using a custom …

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Increasing Diversity, Equity, And Inclusion In The Fields Of Nutrition And Obesity: A Roadmap To Equity In Academia, Samantha L. Martin, Michelle I. Cardel, Tiffany L. Carson, James O. Hill, Takara Stanley, Steven Grinspoon, Felicia Steger, Loneke T. Blackman Carr, Maxine Ashby-Thompson, Delisha Stewart, Jamy Ard, Raziel Rojas-Rodriguez, Mabel Toribio, Gabrielle Page-Wilson, Ursula White, Glenn Rowe, Marine Saint-Cyr, Rita Brookheart, Lauren Adele Fowler, Gwen Twillman, Felicia Price, April Stull, Sonia Vega-Lopez, Tony Comuzzie, Catherine M. Kotz, Francoise Knox Kazimierczuk, Monica L. Baskin, Robert Newton, Andrew Greenberg, Camile E. Powe, Dympna Gallagher, David H. Burk, Elissa S. Epel, Paul S. Maclean Apr 2023

Increasing Diversity, Equity, And Inclusion In The Fields Of Nutrition And Obesity: A Roadmap To Equity In Academia, Samantha L. Martin, Michelle I. Cardel, Tiffany L. Carson, James O. Hill, Takara Stanley, Steven Grinspoon, Felicia Steger, Loneke T. Blackman Carr, Maxine Ashby-Thompson, Delisha Stewart, Jamy Ard, Raziel Rojas-Rodriguez, Mabel Toribio, Gabrielle Page-Wilson, Ursula White, Glenn Rowe, Marine Saint-Cyr, Rita Brookheart, Lauren Adele Fowler, Gwen Twillman, Felicia Price, April Stull, Sonia Vega-Lopez, Tony Comuzzie, Catherine M. Kotz, Francoise Knox Kazimierczuk, Monica L. Baskin, Robert Newton, Andrew Greenberg, Camile E. Powe, Dympna Gallagher, David H. Burk, Elissa S. Epel, Paul S. Maclean

Clinical Research Faculty Publications

Research shows that a diverse faculty improves academic, clinical, and research outcomes in higher education. Despite that, persons in minority groups, usually categorized by race or ethnicity, are underrepresented in academia (URiA). The Nutrition Obesity Research Centers (NORCs), supported by the NIDDK, hosted workshops on five separate days in September and October 2020. NORCs convened these workshops to identify barriers and facilitators for diversity, equity, and inclusion (DEI) and provide specific recommendations to improve DEI within obesity and nutrition for individuals from URiA groups. Recognized experts on DEI presented each day, after which the NORCs conducted breakout sessions with key …

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Monitoring Body Composition Change For Intervention Studies With Advancing 3d Optical Imaging Technology In Comparison To Dual-Energy X-Ray Absorptiometry, Michael C. Wong, Jonathan P. Bennett, Lambert T. Leong, Isaac Y. Tian, Yong E. Liu, Nisa N. Kelly, Cassidy Mccarthy, Julia M.W. Wong, Cara B. Ebbeling, David S. Ludwig, Brian A. Irving, Matthew C. Scott, James Stampley, Brett Davis, Neil Johannsen, Rachel Matthews, Cullen Vincellette, Andrea K. Garber, Gertraud Maskarinec, Ethan Weiss, Jennifer Rood, Alyssa N. Varanoske, Stefan M. Pasiakos, Steven B. Heymsfield, John A. Shepherd Apr 2023

Monitoring Body Composition Change For Intervention Studies With Advancing 3d Optical Imaging Technology In Comparison To Dual-Energy X-Ray Absorptiometry, Michael C. Wong, Jonathan P. Bennett, Lambert T. Leong, Isaac Y. Tian, Yong E. Liu, Nisa N. Kelly, Cassidy Mccarthy, Julia M.W. Wong, Cara B. Ebbeling, David S. Ludwig, Brian A. Irving, Matthew C. Scott, James Stampley, Brett Davis, Neil Johannsen, Rachel Matthews, Cullen Vincellette, Andrea K. Garber, Gertraud Maskarinec, Ethan Weiss, Jennifer Rood, Alyssa N. Varanoske, Stefan M. Pasiakos, Steven B. Heymsfield, John A. Shepherd

Clinical Research Faculty Publications

Background: Recent 3-dimensional optical (3DO) imaging advancements have provided more accessible, affordable, and self-operating opportunities for assessing body composition. 3DO is accurate and precise in clinical measures made by DXA. However, the sensitivity for monitoring body composition change over time with 3DO body shape imaging is unknown. Objectives: This study aimed to evaluate the ability of 3DO in monitoring body composition changes across multiple intervention studies. Methods: A retrospective analysis was performed using intervention studies on healthy adults that were complimentary to the cross-sectional study, Shape Up! Adults. Each participant received a DXA (Hologic Discovery/A system) and 3DO (Fit3D ProScanner) …

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Total Daily Energy Expenditure Has Declined Over The Past Three Decades Due To Declining Basal Expenditure, Not Reduced Activity Expenditure, John R. Speakman, Jasper M.A. De Jong, Srishti Sinha, Klaas R. Westerterp, Yosuke Yamada, Hiroyuki Sagayama, Philip N. Ainslie, Liam J. Anderson, Lenore Arab, Kweku Bedu-Addo, Stephane Blanc, Alberto G. Bonomi, Pascal Bovet, Soren Brage, Maciej S. Buchowski, Nancy F. Butte, Stefan G.J.A. Camps, Jamie A. Cooper, Richard Cooper, Sai Krupa Das, Peter S.W. Davies, Lara R. Dugas, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W. Fudge, Melanie Gillingham, Santu Ghosh, Annelies H. Goris, Michael Gurven, Lewis G. Halsey, Catherine Hambly, Hinke H. Haisma Apr 2023

Total Daily Energy Expenditure Has Declined Over The Past Three Decades Due To Declining Basal Expenditure, Not Reduced Activity Expenditure, John R. Speakman, Jasper M.A. De Jong, Srishti Sinha, Klaas R. Westerterp, Yosuke Yamada, Hiroyuki Sagayama, Philip N. Ainslie, Liam J. Anderson, Lenore Arab, Kweku Bedu-Addo, Stephane Blanc, Alberto G. Bonomi, Pascal Bovet, Soren Brage, Maciej S. Buchowski, Nancy F. Butte, Stefan G.J.A. Camps, Jamie A. Cooper, Richard Cooper, Sai Krupa Das, Peter S.W. Davies, Lara R. Dugas, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W. Fudge, Melanie Gillingham, Santu Ghosh, Annelies H. Goris, Michael Gurven, Lewis G. Halsey, Catherine Hambly, Hinke H. Haisma

Faculty Publications

Obesity is caused by a prolonged positive energy balance1,2. Whether reduced energy expenditure stemming from reduced activity levels contributes is debated3,4. Here we show that in both sexes, total energy expenditure (TEE) adjusted for body composition and age declined since the late 1980s, while adjusted activity energy expenditure increased over time. We use the International Atomic Energy Agency Doubly Labelled Water database on energy expenditure of adults in the United States and Europe (n = 4,799) to explore patterns in total (TEE: n = 4,799), basal (BEE: n = 1,432) and physical activity energy expenditure (n = 1,432) over time. …

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Evaluation Of Alternative Colony Hybridization Methods For Pathogenic Vibrios, Andrew M. Schwartz, Haley A. Marcotte, Crystal N. Johnson Apr 2023

Evaluation Of Alternative Colony Hybridization Methods For Pathogenic Vibrios, Andrew M. Schwartz, Haley A. Marcotte, Crystal N. Johnson

Faculty Publications

Vibrios, such as Vibrio parahaemolyticus, are naturally occurring halophilic bacteria that are a major cause of foodborne illness. Because of their autochthonous nature, managing vibrio levels in marine and estuarine environments is impossible. Instead, it is crucial to reliably enumerate their abundance to minimize human exposure. One method of achieving this is the direct plating/colony hybridization (DP/CH) method, which has been used to efficiently quantify pathogenic vibrios in oysters and other seafood products. Although successful, the method relies on proprietary resources. We examined alternative approaches, assessed the influence of the reagent suppliers’ source on enumeration accuracy, and made experimental adjustments …

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Genome-Wide Association Analysis Of Hyperspectral Reflectance Data To Dissect The Genetic Architecture Of Growth-Related Traits In Maize Under Plant Growth-Promoting Bacteria Inoculation, Rafael Massahiro Yassue, Giovanni Galli, Chun Peng James Chen, Roberto Fritsche-Neto, Gota Morota Apr 2023

Genome-Wide Association Analysis Of Hyperspectral Reflectance Data To Dissect The Genetic Architecture Of Growth-Related Traits In Maize Under Plant Growth-Promoting Bacteria Inoculation, Rafael Massahiro Yassue, Giovanni Galli, Chun Peng James Chen, Roberto Fritsche-Neto, Gota Morota

Faculty Publications

Plant growth-promoting bacteria (PGPB) may be of use for increasing crop yield and plant resilience to biotic and abiotic stressors. Using hyperspectral reflectance data to assess growth-related traits may shed light on the underlying genetics as such data can help assess biochemical and physiological traits. This study aimed to integrate hyperspectral reflectance data with genome-wide association analyses to examine maize growth-related traits under PGPB inoculation. A total of 360 inbred maize lines with 13,826 single nucleotide polymorphisms (SNPs) were evaluated with and without PGPB inoculation; 150 hyperspectral wavelength reflectances at 386–1021 nm and 131 hyperspectral indices were used in the …

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Research On The Total Channel Capacities Pertaining To Two Coverage Layouts For Three-Dimensional, Uav-Assisted Ad Hoc Networks, Xiao Yan, Shenglong Zhu, Qian Wang, Hsiao Chun Wu Apr 2023

Research On The Total Channel Capacities Pertaining To Two Coverage Layouts For Three-Dimensional, Uav-Assisted Ad Hoc Networks, Xiao Yan, Shenglong Zhu, Qian Wang, Hsiao Chun Wu

Faculty Publications

Unmanned aerial vehicles (UAVs) employed as airborne base stations (BSs) are considered the essential components in future sixth-generation wireless networks due to their mobility and line-of-sight communication links. For a UAV-assisted ad hoc network, its total channel capacity is greatly influenced by the deployment of UAV-BSs and the corresponding coverage layouts, where square and hexagonal cells are partitioned to divide the zones individual UAVs should serve. In this paper, the total channel capacities of these two kinds of coverage layouts are evaluated using our proposed novel computationally efficient channel capacity estimation scheme. The mean distance (MD) between a UAV-BS in …

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Acetate Formation On Metals Via Ch4 Carboxylation By Co2: A Dft Study, Md Saeedur Rahman, Ye Xu Apr 2023

Acetate Formation On Metals Via Ch4 Carboxylation By Co2: A Dft Study, Md Saeedur Rahman, Ye Xu

Faculty Publications

Density functional theory calculations have been performed to investigate CH4 activation and coupling to CO2 forming C2 carboxylates such as acetate on the close-packed (111) or (0001) surfaces of ten mid-to-late transition and coinage metals (Co, Ni, Cu, Ru, Rh, Pd, Ag, Ir, Pt, and Au). Consistent with the literature, the activation energy (Ea) for the initial C-H bond scission in CH4 is mild, being ca. 1 eV or less on all but the coinage metals, of which Ag exhibits the highest Ea at 2.13 eV, followed by Au and Cu. Ea for the CH3-CO2 coupling step is 0.8 ∼ …

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The Rise Of Machine Learning In Polymer Discovery, Cheng Yan, Guoqiang Li Apr 2023

The Rise Of Machine Learning In Polymer Discovery, Cheng Yan, Guoqiang Li

Faculty Publications

In the recent decades, with rapid development in computing power and algorithms, machine learning (ML) has exhibited its enormous potential in new polymer discovery. Herein, the history of ML is described and the basic process of ML accelerated polymer discovery is summarized. Next, the four steps in this process are reviewed, that is, dataset selection, fingerprinting, ML framework, and new polymer generation. Finally, a couple of main challenges for ML accelerated polymer discovery is presented and the outlooks in this field are prospected. It is expected that this review can service as a useful tool for the people who just …

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Unstructured-Grid Approach To Develop High-Fidelity Groundwater Model To Understand Groundwater Flow And Storage Responses To Excessive Groundwater Withdrawals In The Southern Hills Aquifer System In Southeastern Louisiana (Usa), Ye Hong Chen, Hamid Vahdat-Aboueshagh, Frank T.C. Tsai, Alyssa Dausman, Michael C. Runge Apr 2023

Unstructured-Grid Approach To Develop High-Fidelity Groundwater Model To Understand Groundwater Flow And Storage Responses To Excessive Groundwater Withdrawals In The Southern Hills Aquifer System In Southeastern Louisiana (Usa), Ye Hong Chen, Hamid Vahdat-Aboueshagh, Frank T.C. Tsai, Alyssa Dausman, Michael C. Runge

Faculty Publications

Study region: The Southern Hills aquifer system (SHAS) in the Louisiana Capital Area Groundwater Conservation District (CAGCD), USA. Study focus: The SHAS provides abundant groundwater for public and industrial supplies in the CAGCD. Groundwater depletion, saltwater intrusion, and land subsidence are potential concerns due to prolonged excessive groundwater withdrawals. This study develops a high-fidelity groundwater flow model utilizing a complex unstructured grid to investigate groundwater flow and storage responses to excessive groundwater withdrawals for the SHAS in the CAGCD. The groundwater model incorporates the Mississippi River alluvial aquifer down to the Miocene sands extending to depths around 1 km. New …

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Predicting Grocery Store Visits During The Early Outbreak Of Covid-19 With Machine Learning, Ruijie Bian, Pamela Murray-Tuite, Brian Wolshon Apr 2023

Predicting Grocery Store Visits During The Early Outbreak Of Covid-19 With Machine Learning, Ruijie Bian, Pamela Murray-Tuite, Brian Wolshon

Faculty Publications

While non-essential travel was canceled during the coronavirus infectious disease (COVID-19) pandemic, grocery shopping was essential. The objectives of this study were to: 1) examine how grocery store visits changed during the early outbreak of COVID-19, and 2) estimate a model to predict the change of grocery store visits in the future, within the same phase of the pandemic. The study period (February 15–May 31, 2020) covered the outbreak and phase-one re-opening. Six counties/states in the United States were examined. Grocery store visits (in-store or curbside pickup) increased over 20% when the national emergency was declared on March 13 and …

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Rise Of The Metaverse's Immersive Virtual Reality Malware And The Man-In-The-Room Attack & Defenses, Martin Vondráček, Ibrahim Baggili, Peter Casey, Mehdi Mekni Apr 2023

Rise Of The Metaverse's Immersive Virtual Reality Malware And The Man-In-The-Room Attack & Defenses, Martin Vondráček, Ibrahim Baggili, Peter Casey, Mehdi Mekni

Faculty Publications

The allure of the metaverse along with Virtual Reality (VR) technologies and speed at which they are deployed may shift focus away from security and privacy fundamentals. In this work we employ classic exploitation techniques against cutting edge devices to obtain equally novel results. The unique features of the Virtual Reality landscape set the stage for our primary account of a new attack, the Man-in-the-Room (MitR). This attack, realized from a vulnerable social networking application led to both worming and botnet capabilities being adapted for VR with potential critical impacts affecting millions of users. Our work improves the state-of-the-art in …

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Creating An Equation To Simply Approximate 3d-Printed Component Strength By-Hand Dependent On Planned Component Print Orientation, Print Temperature, Infill Percentage, And Surface Quality For Polylactic Acid Fused-Deposition Modeling Printing, Andrew Larpenter Apr 2023

Creating An Equation To Simply Approximate 3d-Printed Component Strength By-Hand Dependent On Planned Component Print Orientation, Print Temperature, Infill Percentage, And Surface Quality For Polylactic Acid Fused-Deposition Modeling Printing, Andrew Larpenter

Honors Capstones

No abstract provided.

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Characterization Of Swimming Patterns In Chlamydomonas Reinhardtii, Nathan Kratzberg Apr 2023

Characterization Of Swimming Patterns In Chlamydomonas Reinhardtii, Nathan Kratzberg

Honors Capstones

No abstract provided.

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Viability Of Native Vegetation And Locally Sourced Substrate Mix In Green Roof Modules Under South Louisiana’S Subtropical Climate, Clara Jimenez Apr 2023

Viability Of Native Vegetation And Locally Sourced Substrate Mix In Green Roof Modules Under South Louisiana’S Subtropical Climate, Clara Jimenez

Honors Capstones

No abstract provided.

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Sustainable Application Of Natural Industrial Byproducts As Manufacturing Materials, Aubry Hymel Apr 2023

Sustainable Application Of Natural Industrial Byproducts As Manufacturing Materials, Aubry Hymel

Honors Capstones

No abstract provided.

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Autonomous Robot Swarm Simulator Application: Leader Election And Pattern Formation, Jameson Connor Harrington Apr 2023

Autonomous Robot Swarm Simulator Application: Leader Election And Pattern Formation, Jameson Connor Harrington

Honors Capstones

No abstract provided.

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Calling It What It Is: Climate Change As A Key, Primary, And Direct Push Factor Of Migration In The Middle East And North Africa, Katie Cass Apr 2023

Calling It What It Is: Climate Change As A Key, Primary, And Direct Push Factor Of Migration In The Middle East And North Africa, Katie Cass

Honors Capstones

No abstract provided.

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Gas Hydrates Reserve Characterization Using Thermo-Hydro-Mechanical Numerical Simulation: A Case Study Of Green Canyon 955, Gulf Of Mexico, Sulav Dhakal, Ipsita Gupta Apr 2023

Gas Hydrates Reserve Characterization Using Thermo-Hydro-Mechanical Numerical Simulation: A Case Study Of Green Canyon 955, Gulf Of Mexico, Sulav Dhakal, Ipsita Gupta

Faculty Publications

The Gulf of Mexico is a widely explored and producing region for offshore oil and gas resources, with significant submarine methane hydrates. Estimates of hydrate saturation and distribution rely on drilling expeditions and seismic surveys that tend to provide either large-scale estimates or highly localized well data. In this study, hydrate reserve characterization is done using numerical simulation at Green Canyon block 955 (GC955). In addition, coupled thermo-hydro-mechanical (THM) simulation results show that hydrate saturation and geobody distribution are determined by the thermodynamic conditions as well as reservoir structures, stratigraphic differences, and permeability differences. Hydrate formation due to upflow of …

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From Nafta To The Usmca: How Does Protectionist American Economic Policy Impact Mexico’S Foreign Car Production?, Samantha Raeder Apr 2023

From Nafta To The Usmca: How Does Protectionist American Economic Policy Impact Mexico’S Foreign Car Production?, Samantha Raeder

Honors Capstones

No abstract provided.

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Retraction, N. Kinoshita, M. Paul, Y. Kashiv, P. Collon, C. M. Deibel, B. Digiovine, J. P. Greene, C. L. Jiang, S. T. Marley, R. C. Pardo, K. E. Rehm, D. Robertson, R. Scott, C. Schmitt, X. D. Tang, R. Vondrasek, A. Yokoyama Mar 2023

Retraction, N. Kinoshita, M. Paul, Y. Kashiv, P. Collon, C. M. Deibel, B. Digiovine, J. P. Greene, C. L. Jiang, S. T. Marley, R. C. Pardo, K. E. Rehm, D. Robertson, R. Scott, C. Schmitt, X. D. Tang, R. Vondrasek, A. Yokoyama

Faculty Publications

No abstract provided.

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Cable Decoupling And Cable-Based Stiffening Of Continuum Robots, Parsa Molaei Mar 2023

Cable Decoupling And Cable-Based Stiffening Of Continuum Robots, Parsa Molaei

LSU Master's Theses

Cable-driven continuum robots, which are robots with a continuously flexible backbone and no identifiable joints that are actuated by cables, have shown great potential for many applications in unstructured, uncertain environments. However, the standard design for a cable-driven continuum robot segment, which bends a continuous backbone along a circular arc, has many compliant modes of deformation which are uncontrolled, and which may result in buckling or other undesirable behaviors if not ameliorated. In this study, a detailed approach for using additional cables to selectively stiffen planar cable-driven robots without substantial coupling to the actuating cables is investigated. A mechanics-based model …

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Improved Selectivity And Stability In Methane Dry Reforming By Atomic Layer Deposition Onto Ni-Ceo2-Zro2/Al2o3 Catalysts, Jonathan Lucas Mar 2023

Improved Selectivity And Stability In Methane Dry Reforming By Atomic Layer Deposition Onto Ni-Ceo2-Zro2/Al2o3 Catalysts, Jonathan Lucas

LSU Master's Theses

The use of Ni in the dry reforming of methane (DRM) has been widely studied as a replacement for noble metal catalysts (Pt, Pd, Rh) due to Ni’s low cost compared to noble metals, its abundance, and the fact that its DRM activity is near that of noble metal catalysts. However, Ni has been shown to deactivate quickly under DRM conditions. Rare earth oxides such as CeO2, or as CeO2-ZrO2 (CZO) are supports that improve both the activity and stability of Ni DRM systems due to their redox activity. However, this same activity is thought …

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