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Surface And Bulk Properties Of Multi-Component Metal Alloys, Frank A. Mckay Iii Mar 2024

Surface And Bulk Properties Of Multi-Component Metal Alloys, Frank A. Mckay Iii

LSU Doctoral Dissertations

While HEAs have been studied extensively for their material properties, their potential as catalysts remains widely unexplored. To explore the feasibility of CoCrFeNi as a catalyst for the hydrogen evolution reaction, the results of X-ray photoelectron spectroscopy (XPS) and high-resolution electron energy loss spectroscopy (HREELS) experiments are compared to electrochemical experiments and theoretical calculations. XPS shows that this surface forms passive oxides with a propensity of Cr > Fe > Co, with no evidence of Ni oxidation. From comparison to calculations, it is shown that the electrochemical activity is enhanced in a partially oxidized state. The lack of Ni oxidation suggests that …

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Development Of Accurate Embedded Fracture Models For Naturally Fractured Reservoirs, Harun Ur Rashid Mar 2024

Development Of Accurate Embedded Fracture Models For Naturally Fractured Reservoirs, Harun Ur Rashid

LSU Doctoral Dissertations

Natural fractures play a critical role in the performance of unconventional oil, gas, and geothermal reservoirs due to their prevalent occurrence within these systems. However, modeling these fractures accurately and efficiently is still challenging. This work centers on an extensive analysis of naturally fractured systems and proposes new fracture modeling algorithms that can predict the performance of fractured tight rocks accurately and efficiently. Several researchers have explored various methodologies to accurately and efficiently model fractured reservoirs. Among the approaches that can account for each individual fracture in these reservoirs, the embedded discrete fracture model (EDFM) is one of the most …

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Effects Of Social Media Use Disparities On Community Resilience To Disasters, Kejin Wang Mar 2024

Effects Of Social Media Use Disparities On Community Resilience To Disasters, Kejin Wang

LSU Doctoral Dissertations

With the rapid development of social media, many researchers chose to use social media data to conduct studies of disaster resilience. This dissertation addresses three fundamental challenges related to social media use and disaster resilience analysis including: how the spatial analysis scale affects the results of social media use disparity and its impacts on disaster resilience; how different vulnerability and resilience measurement methods can generate very different results; and how social media use disparity can be identified to help improve the fairness of AI-based emergency rescue model development. Therefore, the first part of the dissertation measured the relationships between disparities …

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Antifungal Efficacy Of Nanodelivered Azoxystrobin Against Rhizoctonia Solani In Soybean (Glycine Max), Eban A. Hanna, Carlos E. Astete, Trey Price, Carlos Tamez, Omar E. Mendez, Alvaro Garcia, Fannyuy V. Kewir, Jason C. White, Cristina M. Sabliov Mar 2024

Antifungal Efficacy Of Nanodelivered Azoxystrobin Against Rhizoctonia Solani In Soybean (Glycine Max), Eban A. Hanna, Carlos E. Astete, Trey Price, Carlos Tamez, Omar E. Mendez, Alvaro Garcia, Fannyuy V. Kewir, Jason C. White, Cristina M. Sabliov

Faculty Publications

Zein nanoparticles (ZNP) (189.4 ± 2.0 nm, +25.7 ± 0.9 mV) and lignin nanoparticles (LNP) (173.6 ± 0.9 nm, - 56.5 ± 2.8 mV) with loaded azoxystrobin (AZO) (5.2 ± 0.8 and 5.5 ± 0.7 wt %, respectively) were designed as antifungal delivery systems for seed treatments. Both particles followed pseudo-first-order kinetics for AZO release at 25 °C, with AZO releasing faster from ZNP. AZO-entrapped ZNP treatments produced the greatest yield (41.15 bushels), followed by empty LNP (40.35 bushels) for inoculated samples; these findings were comparable to yields achieved with the commercial AZO formulation, Dynasty. The stand per row feet …

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Multi-Decadal Coastal Acidification In The Northern Gulf Of Mexico Driven By Climate Change And Eutrophication, Zong Pei Jiang, Cao Qin, Yiwen Pan, Chengfeng Le, Nancy Rabalais, Robert Eugene Turner, Katja Fennel, Kui Wang, Wei Jun Cai Mar 2024

Multi-Decadal Coastal Acidification In The Northern Gulf Of Mexico Driven By Climate Change And Eutrophication, Zong Pei Jiang, Cao Qin, Yiwen Pan, Chengfeng Le, Nancy Rabalais, Robert Eugene Turner, Katja Fennel, Kui Wang, Wei Jun Cai

Faculty Publications

Coastal waters often experience enhanced ocean acidification due to the combined effects of climate change and regional biological and anthropogenic activities. Through reconstructing summertime bottom pH in the northern Gulf of Mexico from 1986 to 2019, we demonstrated that eutrophication-fueled respiration dominated bottom pH changes on intra-seasonal and interannual timescales, resulting in recurring acidification coinciding with hypoxia. However, the multi-decadal acidification trend was principally driven by rising atmospheric CO2 and ocean warming, with more acidified and less buffered hypoxic waters exhibiting a higher rate of pH decline (− 0.0023 yr− 1) compared to non-hypoxic waters (− 0.0014 yr …

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Worldwide Trends In Underweight And Obesity From 1990 To 2022: A Pooled Analysis Of 3663 Population-Representative Studies With 222 Million Children, Adolescents, And Adults, Nowell H. Phelps, Rosie K. Singleton, Bin Zhou, Rachel A. Heap, Anu Mishra, James E. Bennett, Christopher J. Paciorek, Victor Pf Lhoste, Rodrigo M. Carrillo-Larco, Gretchen A. Stevens, Andrea Rodriguez-Martinez, Honor Bixby, James Bentham, Mariachiara Di Cesare, Goodarz Danaei, Archie W. Rayner, Ana Barradas-Pires, Melanie J. Cowan, Stefan Savin, Leanne M. Riley, Carlos A. Aguilar-Salinas, Jennifer L. Baker, Amina Barkat, Zulfiqar A. Bhutta, Francesco Branca, Roberta B. Caixeta, Sarah Cuschieri, Farshad Farzadfar, Shubash Ganapathy, Nayu Ikeda, Violeta Iotova, Andre P. Kengne, Young Ho Khang, Avula Laxmaiah Mar 2024

Worldwide Trends In Underweight And Obesity From 1990 To 2022: A Pooled Analysis Of 3663 Population-Representative Studies With 222 Million Children, Adolescents, And Adults, Nowell H. Phelps, Rosie K. Singleton, Bin Zhou, Rachel A. Heap, Anu Mishra, James E. Bennett, Christopher J. Paciorek, Victor Pf Lhoste, Rodrigo M. Carrillo-Larco, Gretchen A. Stevens, Andrea Rodriguez-Martinez, Honor Bixby, James Bentham, Mariachiara Di Cesare, Goodarz Danaei, Archie W. Rayner, Ana Barradas-Pires, Melanie J. Cowan, Stefan Savin, Leanne M. Riley, Carlos A. Aguilar-Salinas, Jennifer L. Baker, Amina Barkat, Zulfiqar A. Bhutta, Francesco Branca, Roberta B. Caixeta, Sarah Cuschieri, Farshad Farzadfar, Shubash Ganapathy, Nayu Ikeda, Violeta Iotova, Andre P. Kengne, Young Ho Khang, Avula Laxmaiah

Population and Public Health Science Faculty Publications

Background: Underweight and obesity are associated with adverse health outcomes throughout the life course. We estimated the individual and combined prevalence of underweight or thinness and obesity, and their changes, from 1990 to 2022 for adults and school-aged children and adolescents in 200 countries and territories. Methods: We used data from 3663 population-based studies with 222 million participants that measured height and weight in representative samples of the general population. We used a Bayesian hierarchical model to estimate trends in the prevalence of different BMI categories, separately for adults (age ≥20 years) and school-aged children and adolescents (age 5–19 years), …

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The Holomorphic Discrete Series Contribution To The Generalized Whittaker Plancherel Formula, Jan Frahm, Gestur Ólafsson, Bent Ørsted Mar 2024

The Holomorphic Discrete Series Contribution To The Generalized Whittaker Plancherel Formula, Jan Frahm, Gestur Ólafsson, Bent Ørsted

Faculty Publications

For a Hermitian Lie group G of tube type we find the contribution of the holomorphic discrete series to the Plancherel decomposition of the Whittaker space L2(G/N,ψ), where N is the unipotent radical of the Siegel parabolic subgroup and ψ is a certain non-degenerate unitary character on N. The holomorphic discrete series embeddings are constructed in terms of generalized Whittaker vectors for which we find explicit formulas in the bounded domain realization, the tube domain realization and the L2-model of the holomorphic discrete series. Although L2(G/N,ψ) does not have finite multiplicities in general, the …

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Coherent States Of The Laguerre–Gauss Modes, M. P. Morales Rodríguez, O. S. Magaña-Loaiza, B. Perez-Garcia, L. M. Nieto Calzada, F. Marroquín Gutiérrrez, B. M. Rodríguez-Lara Mar 2024

Coherent States Of The Laguerre–Gauss Modes, M. P. Morales Rodríguez, O. S. Magaña-Loaiza, B. Perez-Garcia, L. M. Nieto Calzada, F. Marroquín Gutiérrrez, B. M. Rodríguez-Lara

Faculty Publications

Large quantum photonic systems hold promise for surpassing classical computational limits, yet their state preparation remains a challenge. We propose an alternative approach to study multiparticle dynamics by mapping the excitation mode of these systems to physical properties of the Laguerre–Gauss modes. We construct coherent states establishing a direct link between excitation number dynamics and the evolution of the Laguerre–Gauss modes. This highlights the photon transverse spatial degree of freedom as a versatile platform for testing the fundamental aspects of quantum multiparticle systems.

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Running To Or Running From: Exploring The Phenomenology Of Off-Cycle Turnover In Entry Level Housing Professionals, Kate Gannon-Cullinan Mar 2024

Running To Or Running From: Exploring The Phenomenology Of Off-Cycle Turnover In Entry Level Housing Professionals, Kate Gannon-Cullinan

LSU Doctoral Dissertations

Housing and residence life as a functional area serves as a major entry point for careers in higher education and student affairs. With the majority of annual job postings within entry-level, live-in housing roles, the future of the field may well be predicted in these high-impact, high-turnover positions on college campuses. As these functional areas continue to struggle to find themselves fully-staffed throughout their academic year cycle, the impact on both the student experience and organizational health is impacted. This study utilized an interpretive phenomenological approach to explore the experiences and feelings of those entry-level, live-in housing professionals who chose …

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The Association Between Problematic Drinking And Ends Use In College Students: The Role Of Alcohol Expectancies, Nina Glover Mar 2024

The Association Between Problematic Drinking And Ends Use In College Students: The Role Of Alcohol Expectancies, Nina Glover

LSU Master's Theses

Electronic nicotine delivery system (ENDS) use and alcohol use are prevalent among young adults and college students. Recent data indicate that ENDS use is significantly associated with alcohol consumption and hazardous drinking behavior (e.g., binge drinking). Given the perceived benefits students report that are common across ENDS and alcohol use (e.g., tension reduction), it is important to examine the role these beliefs play in the co-use of alcohol and ENDS, as both behaviors are associated with risks. In the present study, we investigated the relationship among ENDS use, alcohol use, ENDS use motives, and alcohol expectancies in undergraduate college students …

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Investigating Gulf Coast Aquifer System: Stratigraphy Reconstruction, Inverse Modeling, And Groundwater Stress Assessment, Shuo Yang Mar 2024

Investigating Gulf Coast Aquifer System: Stratigraphy Reconstruction, Inverse Modeling, And Groundwater Stress Assessment, Shuo Yang

LSU Doctoral Dissertations

The Mississippi Embayment aquifer system (MEAS) and the Coastal Lowlands aquifer system (CLAS) provide substantial groundwater resources for human activities in the U.S. Gulf Coastal Plain. However, the overexploitation has led to groundwater depletion in the MEAS and the CLAS, threatening sustainable groundwater use. Such concern highlights the crucial need for an advanced understanding of stratigraphy and groundwater in these aquifer systems, which is essential for effective regional groundwater management. This dissertation presents a comprehensive investigation of MEAS and CLAS in the Louisiana and southwestern Mississippi region, encompassing three fundamental dimensions: stratigraphy reconstruction, groundwater modeling, and groundwater stress assessments. A …

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In-Person, Hybrid, Or Remote: Exploring The Effectiveness Of Teacher Practices On Student Performance During The Covid-19 Pandemic, Ashley M. Segalla Mar 2024

In-Person, Hybrid, Or Remote: Exploring The Effectiveness Of Teacher Practices On Student Performance During The Covid-19 Pandemic, Ashley M. Segalla

LSU Doctoral Dissertations

Schools and universities had to make unexpected changes beginning in Spring 2020 because of the COVID-19 pandemic. In Spring 2021, one university in the southern region of the United States implemented hybrid teaching formats in College Algebra courses, where students attended half of the classes in-person, and the remaining half of classes were attended synchronously and remotely. The purpose of this mixed methods study was to determine if students’ attendance methods (virtual or in-person) impacted their academic performance in the course. Additionally, the study sought to determine how students and the instructor felt student performance was impacted by hybrid attendance. …

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Reconsidering The Reliability Of Chemical Process Simulators I: Implementation Of The Murphree And Vaporization Efficiencies, Zachary Braswell, Brian F. Hanley, Holt Ragsdale Mar 2024

Reconsidering The Reliability Of Chemical Process Simulators I: Implementation Of The Murphree And Vaporization Efficiencies, Zachary Braswell, Brian F. Hanley, Holt Ragsdale

Faculty Publications

Most chemical process simulators in widespread use today allow users to apply some type of efficiency correction to individual equilibrium stages or to equilibrium stage sections in order to align the stage or section separation performance more closely to actual tray performance in the field. Some simulators even allow for the use of component efficiencies on individual stages or in stage sections. It is our contention, however, that two of the more commonly available efficiency models, the vaporization efficiency and Murphree vapor phase efficiency, have generally been implemented incorrectly. The three major conceptual inconsistencies are (1) the assumption that the …

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"In The Footsteps Of Hercules": The Influence Of Classical Antiquity On Eighteenth-Century Militaries, Scott Madere Mar 2024

"In The Footsteps Of Hercules": The Influence Of Classical Antiquity On Eighteenth-Century Militaries, Scott Madere

LSU Doctoral Dissertations

This project examines the pervasive influence of ancient Roman and Greek figures, historical events, literature, and military methods on the leaders and practitioners of eighteenth-century warfare. Rulers, generals, military theorists, and officers frequently consulted classical histories and literature for solutions to the common military problems of the period – tactical, operational, and strategic – showing remarkable faith in ancient military methods despite their growing dependence on gunpowder weaponry and related technologies. This dissertation examines why this was the case and concludes that classical antiquity not only maintained the credibility of its wisdom in the context of modern warfare, but also …

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Halosulfuron Plus Prosulfuron And Propanil Interactions For Weed Control In Louisiana Rice Production, John A. Williams Mar 2024

Halosulfuron Plus Prosulfuron And Propanil Interactions For Weed Control In Louisiana Rice Production, John A. Williams

LSU Master's Theses

A greenhouse study was conducted on November 18, and December 2, 2020 at Louisiana State University in Baton Rouge, Louisiana to evaluate the interaction between a pre-packaged mixture of halosulfuron plus prosulfuron mixed with propanil for alligatorweed control. Antagonism occurred when halosulfuron plus prosulfuron at 55 g ha-1 was mixed with propanil at 2,242 g ha-1 at all evaluation dates and antagonism was also observed with halosulfuron plus prosulfuron at 83 g ha-1 mixed with propanil at 2,242 g ha-1 at all evaluation dates except 14 DAT with observed controls of 69 to 77% compared with expected controls of 94 …

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Adverse Birth Outcomes And Childhood Overweight At Age Of 3–8 Years In A Prospective Cohort Study In Tianjin, China, Rui Zhang, Ming Gao, Weiqin Li, Hongyan Liu, Shuting Wang, Hui Wang, Ninghua Li, Jing Li, Zhijie Yu, Gang Hu, Junhong Leng, Xilin Yang Mar 2024

Adverse Birth Outcomes And Childhood Overweight At Age Of 3–8 Years In A Prospective Cohort Study In Tianjin, China, Rui Zhang, Ming Gao, Weiqin Li, Hongyan Liu, Shuting Wang, Hui Wang, Ninghua Li, Jing Li, Zhijie Yu, Gang Hu, Junhong Leng, Xilin Yang

Population and Public Health Science Faculty Publications

Objectives To explore associations between adverse birth outcomes and childhood overweight at 3–8 years of age. Design A prospective cohort study. Setting Six central urban districts of Tianjin, China. Participants 1681 woman–child pairs. Methods 1681 woman–child pairs were followed up for 8 years in Tianjin, China. Demographic and clinical information including birth outcomes was collected longitudinally, commencing from first antenatal care visit till postpartum period. Offspring height and weight were measured at 3–8 years of age. High and low weight/ length ratios (WLR) at birth were, respectively, defined as ≥90th and ≤10th gestational week and sex-specific percentiles. Overweight for children …

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Modulation Of Methoxyfenozide Release From Lignin Nanoparticles Made Of Lignin Grafted With Pcl By Rop And Acylation Grafting Methods, Alvaro Garcia, Carlos E. Astete, Rafael Cueto, Cristina M. Sabliov Mar 2024

Modulation Of Methoxyfenozide Release From Lignin Nanoparticles Made Of Lignin Grafted With Pcl By Rop And Acylation Grafting Methods, Alvaro Garcia, Carlos E. Astete, Rafael Cueto, Cristina M. Sabliov

Faculty Publications

An efficient and sustainable agriculture calls for the development of novel agrochemical delivery systems able to release agrochemicals in a controlled manner. This study investigated the controlled release of the insecticide methoxyfenozide (MFZ) from lignin (LN) nanoparticles (LNPs). LN-grafted poly(ϵ-caprolactone) (LN-g-PCL) polymers were synthesized using two grafting methods, ring-opening polymerization (ROP)(LN-g-PCLp) and acylation reaction (LN-g-PCLa), creating polymers capable of self-assembling into nanoparticles of different properties, without surfactants. The LN-g-PCLp polymers exhibited a degree of polymerization (DP) from 22 to 101, demonstrating enhanced thermal stability after LN incorporation. LNPs loaded with MFZ exhibited a spherical core-shell structure with a hydrophilic LN …

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Pal-Bert: An Improved Question Answering Model, Wenfeng Zheng, Siyu Lu, Zhuohang Cai, Ruiyang Wang, Lei Wang, Lirong Yin Mar 2024

Pal-Bert: An Improved Question Answering Model, Wenfeng Zheng, Siyu Lu, Zhuohang Cai, Ruiyang Wang, Lei Wang, Lirong Yin

Faculty Publications

In the field of natural language processing (NLP), there have been various pre-training language models in recent years, with question answering systems gaining significant attention. However, as algorithms, data, and computing power advance, the issue of increasingly larger models and a growing number of parameters has surfaced. Consequently, model training has become more costly and less efficient. To enhance the efficiency and accuracy of the training process while reducing the model volume, this paper proposes a first-order pruning model PAL-BERT based on the ALBERT model according to the characteristics of question-answering (QA) system and language model. Firstly, a first-order network …

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The Staggered Retreat Of Grounded Ice In The Ross Sea, Antarctica, Since The Last Glacial Maximum (Lgm), Matthew A. Danielson, Philip J. Bart Mar 2024

The Staggered Retreat Of Grounded Ice In The Ross Sea, Antarctica, Since The Last Glacial Maximum (Lgm), Matthew A. Danielson, Philip J. Bart

Faculty Publications

The retreat of the West Antarctic Ice Sheet (WAIS) in the Ross Sea after the Last Glacial Maximum (LGM) was more significant than for any other Antarctic sector. Here we combined the available chronology of retreat with new mapping of seismically resolvable grounding zone wedges (GZWs). Mapping GZWs is important because they record the locations of former stillstands in the extent of grounded ice for individual ice streams during the overall retreat. Our analysis shows that the longest stillstands occurred early in the deglacial period and had millennial durations. Stillstands ended abruptly with retreat distances measured in the tens to …

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Computational Design Of An Electro-Organocatalyst For Conversion Of Co2 Into Formaldehyde, Foroogh Khezeli, Craig Plaisance Mar 2024

Computational Design Of An Electro-Organocatalyst For Conversion Of Co2 Into Formaldehyde, Foroogh Khezeli, Craig Plaisance

Faculty Publications

Density functional theory calculations employing a hybrid implicit/explicit solvation method were used to explore a new strategy for electrochemical conversion of CO2 using an electro-organocatalyst. A particular structural motif is identified that consists of an electron-rich vicinal enediamine (>N-C═C-N<) backbone, which is capable of activating CO2 by the formation of a C-C bond while subsequently facilitating the transfer of electrons from a chemically inert cathode to ultimately produce formaldehyde. Unlike transition metal-based electrocatalysts, the electro-organocatalyst is not constrained by scaling relations between the formation energies of activated CO2 and adsorbed CO, nor is it expected to be active for the competing hydrogen evolution reaction. The rate-limiting steps are found to occur during two proton-coupled electron transfer (PCET) sequences and are associated with the transfer of a proton from a proton transfer mediator to a carbon atom on the electro-organocatalyst. The difficulty of this step in the second PCET sequence necessitates an electrode potential of −0.85 V vs RHE to achieve the maximum turnover frequency. In addition, it is postulated that the electro-organocatalyst should also be capable of forming long-chain aldehydes by successively carrying out reductive aldol condensation to grow the alkyl chain one carbon at a time.

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Examining The Effects Of Differential Reinforcement And Time-Out On Unsafe Playground Behavior, Elizabeth K. Linton Mar 2024

Examining The Effects Of Differential Reinforcement And Time-Out On Unsafe Playground Behavior, Elizabeth K. Linton

LSU Master's Theses

The purpose of this study was to examine the effects of differential reinforcement (DRO) without extinction, and then the additive effects of time-out, on reducing unsafe playground behavior. The results of the DRO in isolation phase indicated that DRO alone was only consistently effective in reducing or eliminating unsafe behavior for one out of four participants. The other three participants moved on to the multielement comparison where the combination of DRO and time-out (DRO+TO) condition was added. The DRO+TO condition reduced and eliminated unsafe playground behavior for all participants who experienced the condition. Those participants engaged in higher levels of …

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Food Insecurity And Premature Mortality And Life Expectancy In The Us, Hao Ma, Xuan Wang, Xiang Li, Yoriko Heianza, Peter T. Katzmarzyk, Oscar H. Franco, Lu Qi Mar 2024

Food Insecurity And Premature Mortality And Life Expectancy In The Us, Hao Ma, Xuan Wang, Xiang Li, Yoriko Heianza, Peter T. Katzmarzyk, Oscar H. Franco, Lu Qi

Population and Public Health Science Faculty Publications

IMPORTANCE Food insecurity has been linked to multiple causes of disease and premature mortality; however, its association with mortality by sex and across racial and ethnic groups remains unknown in the US. OBJECTIVE To investigate the associations of the entire range of food security with all-cause premature mortality and life expectancy across racial and ethnic and sex groups in US adults. DESIGN, SETTING, AND PARTICIPANTS This cohort study included adults (aged ≥18 years) who participated in the National Health and Nutrition Examination Survey from 1999 to 2018, with linkage to the National Death Index through December 31, 2019. Data analysis …

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A Characterization Of The Operator Entropy In Terms Of An Isometry Property Related To Trace Norms, Ryo Inayoshi Mar 2024

A Characterization Of The Operator Entropy In Terms Of An Isometry Property Related To Trace Norms, Ryo Inayoshi

Journal of Stochastic Analysis

No abstract provided.

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Salt Water Exposure Exacerbates The Negative Response Of Phragmites Australis Haplotypes To Sea-Level Rise, Austin Lynn, Tracy Elsey-Quirk Mar 2024

Salt Water Exposure Exacerbates The Negative Response Of Phragmites Australis Haplotypes To Sea-Level Rise, Austin Lynn, Tracy Elsey-Quirk

Faculty Publications

The response of coastal wetlands to sea-level rise (SLR) largely depends on the tolerance of individual plant species to inundation stress and, in brackish and freshwater wetlands, exposure to higher salinities. Phragmites australis is a cosmopolitan wetland reed that grows in saline to freshwater marshes. P. australis has many genetically distinct haplotypes, some of which are invasive and the focus of considerable research and management. However, the relative response of P. australis haplotypes to SLR is not well known, despite the importance of predicting future distribution changes and understanding its role in marsh response and resilience to SLR. Here, we …

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Deconstructing The Mangrove Carbon Cycle: Gains, Transformation, And Losses, M. F. Adame, N. Cormier, P. Taillardat, N. Iram, A. Rovai, T. M. Sloey, E. S. Yando, J. F. Blanco-Libreros, M. Arnaud, T. Jennerjahn, C. E. Lovelock, D. Friess, G. M.S. Reithmaier, C. A. Buelow, S. M. Muhammad-Nor, R. R. Twilley, R. A. Ribeiro Mar 2024

Deconstructing The Mangrove Carbon Cycle: Gains, Transformation, And Losses, M. F. Adame, N. Cormier, P. Taillardat, N. Iram, A. Rovai, T. M. Sloey, E. S. Yando, J. F. Blanco-Libreros, M. Arnaud, T. Jennerjahn, C. E. Lovelock, D. Friess, G. M.S. Reithmaier, C. A. Buelow, S. M. Muhammad-Nor, R. R. Twilley, R. A. Ribeiro

Faculty Publications

Mangroves are one of the most carbon-dense forests on the Earth and have been highlighted as key ecosystems for climate change mitigation and adaptation. Hundreds of studies have investigated how mangroves fix, transform, store, and export carbon. Here, we review and synthesize the previously known and emerging carbon pathways in mangroves, including gains (woody biomass accumulation, deadwood accumulation, soil carbon sequestration, root and litterfall production), transformations (food web transfer through herbivory, decomposition), and losses (respiration as CO2 and CH4, litterfall export, particulate and dissolved carbon export). We then review the technologies available to measure carbon fluxes in mangroves, their potential, …

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Spatial Distribution And Movement Of Atlantic Tarpon (Megalops Atlanticus) In The Northern Gulf Of Mexico, Shane A. Stephens, Michael A. Dance, Michelle Zapp Sluis, Richard J. Kline, Matthew K. Streich, Gregory W. Stunz, Aaron J. Adams, R. J.David Wells, Jay R. Rooker Mar 2024

Spatial Distribution And Movement Of Atlantic Tarpon (Megalops Atlanticus) In The Northern Gulf Of Mexico, Shane A. Stephens, Michael A. Dance, Michelle Zapp Sluis, Richard J. Kline, Matthew K. Streich, Gregory W. Stunz, Aaron J. Adams, R. J.David Wells, Jay R. Rooker

Faculty Publications

Atlantic tarpon (Megalops atlanticus) are capable of long-distance migrations (hundreds of kilometers) but also exhibit resident behaviors in estuarine and coastal habitats. The aim of this study was to characterize the spatial distribution of juvenile tarpon and identify migration pathways of adult tarpon in the northern Gulf of Mexico. Spatial distribution of juvenile tarpon was investigated using gillnet data collected by Texas Parks and Wildlife Department (TPWD) over the past four decades. Generalized additive models (GAMs) indicated that salinity and water temperature played a significant role in tarpon presence, with tarpon occurrences peaking in the fall and increasing over the …

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Claudin-1 As A Novel Target Gene Induced In Obesity And Associated To Inflammation, Fibrosis, And Cell Differentiation, Pablo Fernández-García, Siri D. Taxerås, Marjorie Reyes-Farias, Lorena González, Andrea Soria-Gondek, Silvia Pellitero, Jordi Tarascó, Pau Moreno, Lauro Sumoy, Jacqueline M. Stephens, Lindsey G. Yoo, María Galán, Adriana Izquierdo, Gema Medina-Gómez, Laura Herrero, Patricia Corrales, Francesc Villarroya, Rubén Cereijo, David Sánchez-Infantes Mar 2024

Claudin-1 As A Novel Target Gene Induced In Obesity And Associated To Inflammation, Fibrosis, And Cell Differentiation, Pablo Fernández-García, Siri D. Taxerås, Marjorie Reyes-Farias, Lorena González, Andrea Soria-Gondek, Silvia Pellitero, Jordi Tarascó, Pau Moreno, Lauro Sumoy, Jacqueline M. Stephens, Lindsey G. Yoo, María Galán, Adriana Izquierdo, Gema Medina-Gómez, Laura Herrero, Patricia Corrales, Francesc Villarroya, Rubén Cereijo, David Sánchez-Infantes

Division of Basic Science Faculty Publications

Objective: T lymphocytes from visceral and subcutaneous white adipose tissues (vWAT and sWAT, respectively) can have opposing roles in the systemic metabolic changes associated with obesity. However, few studies have focused on this subject. Claudin-1 (CLDN1) is a protein involved canonically in tight junctions and tissue paracellular permeability. We evaluated T-lymphocyte gene expression in vWAT and sWAT and in the whole adipose depots in human samples. Methods: A Clariom D-based transcriptomic analysis was performed on T lymphocytes magnetically separated from vWAT and sWAT from patients with obesity (Cohort 1; N = 11). Expression of candidate genes resulting from that analysis …

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Exploring Successful Implementation Of Organizational Supports At The Worksite Environment: A Mixed Methods Approach, Renee A. Underwood, Ralph J. Wood, Alexandra D. Tomchek, Michael D. Celestin, Richard Culbertson, Stephen Phillippi, Stephanie T. Broyles Mar 2024

Exploring Successful Implementation Of Organizational Supports At The Worksite Environment: A Mixed Methods Approach, Renee A. Underwood, Ralph J. Wood, Alexandra D. Tomchek, Michael D. Celestin, Richard Culbertson, Stephen Phillippi, Stephanie T. Broyles

Population and Public Health Science Faculty Publications

While there is evidence that organizational supports may lead to better employee health, research on implementing such organizational supports is lacking. This research sought to understand organizational supports and implementation of those supports using an Explanatory Sequential Mixed Methods design approach. Employee survey responses (n = 202) were used to classify organizations into “high” and “low” categories for employee-reported health behavior improvement, agreement, and readiness for implementing change. For the qualitative phase of research (organization-level), semi-structured interviews were conducted with organization leads, and data were analyzed through constant comparative analysis procedure. Analyses sought to identify differences between “high” versus “low” …

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Speculating About Genocide: The Queensland Frontier 1859–1897, Mark Finnane, Jonathan Richards Mar 2024

Speculating About Genocide: The Queensland Frontier 1859–1897, Mark Finnane, Jonathan Richards

Faculty Publications

In the colonisation of Queensland, Australia it is commonly accepted that large numbers of Indigenous people were killed in the second half of the nineteenth century. Calculations of violent mortality have recently been revised radically upwards. We suggest that the methodology deployed in these new studies is unreliable, reflecting errors in counting and calculation, as well as underestimating the selection bias of the samples. We caution against projecting aggregate violent mortality where the underlying data are so imperfect and emphasise the value of more detailed local and regional studies to inform better understanding of colonisation's impact on First Peoples.

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Worldwide Forest Surveys Reveal Forty-Three New Species In Phytophthora Major Clade 2 With Fundamental Implications For The Evolution And Biogeography Of The Genus And Global Plant Biosecurity, T. Jung, I. Milenković, Y. Balci, J. Janoušek, T. Kudláček, Z. Nagy, B. Baharuddin, J. Bakonyi, K. D. Broders, S. O. Cacciola, T. T. Chang, N. M. Chi, T. Corcobado, A. Cravador, B. Dordević, A. Durán, M. Ferreira, C. H. Fu, L. Garcia, A. Hieno, H. H. Ho, C. Hong, M. Junaid, K. Kageyama, T. Kuswinanti, C. Maia, T. Májek, H. Masuya, G. Magnano Di San Lio, B. Mendieta-Araica, N. Nasri, L. S.S. Oliveira, A. Pane Mar 2024

Worldwide Forest Surveys Reveal Forty-Three New Species In Phytophthora Major Clade 2 With Fundamental Implications For The Evolution And Biogeography Of The Genus And Global Plant Biosecurity, T. Jung, I. Milenković, Y. Balci, J. Janoušek, T. Kudláček, Z. Nagy, B. Baharuddin, J. Bakonyi, K. D. Broders, S. O. Cacciola, T. T. Chang, N. M. Chi, T. Corcobado, A. Cravador, B. Dordević, A. Durán, M. Ferreira, C. H. Fu, L. Garcia, A. Hieno, H. H. Ho, C. Hong, M. Junaid, K. Kageyama, T. Kuswinanti, C. Maia, T. Májek, H. Masuya, G. Magnano Di San Lio, B. Mendieta-Araica, N. Nasri, L. S.S. Oliveira, A. Pane

Faculty Publications

During 25 surveys of global Phytophthora diversity, conducted between 1998 and 2020, 43 new species were detected in natural ecosystems and, occasionally, in nurseries and outplantings in Europe, Southeast and East Asia and the Americas. Based on a multigene phylogeny of nine nuclear and four mitochondrial gene regions they were assigned to five of the six known subclades, 2a-c, e and f, of Phytophthora major Clade 2 and the new subclade 2g. The evolutionary history of the Clade appears to have involved the pre-Gondwanan divergence of three extant subclades, 2c, 2e and 2f, all having disjunct natural distributions on separate …

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