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Articles 6271 - 6300 of 45176

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Hepatic Nfe2l2 Is Not An Essential Mediator Of The Metabolic Phenotype Produced By Dietary Methionine Restriction, Han Fang, Kirsten P. Stone, Sujoy Ghosh, Laura A. Forney, Landon C. Sims, Leighann Vincik, Thomas W. Gettys Jun 2021

Hepatic Nfe2l2 Is Not An Essential Mediator Of The Metabolic Phenotype Produced By Dietary Methionine Restriction, Han Fang, Kirsten P. Stone, Sujoy Ghosh, Laura A. Forney, Landon C. Sims, Leighann Vincik, Thomas W. Gettys

Division of Basic Science Faculty Publications

The principal sensing of dietary methionine restriction (MR) occurs in the liver, where it activates multiple transcriptional programs that mediate various biological components of the response. Hepatic Fgf21 is a key target and essential endocrine mediator of the metabolic phenotype produced by dietary MR. The transcription factor, Nfe2l2, is also activated by MR and functions in tandem with hepatic Atf4 to transactivate multiple, antioxidative components of the integrated stress response. However, it is unclear whether the transcriptional responses linked to Nfe2l2 activation by dietary MR are essential to the biological efficacy of the diet. Using mice with liver-specific deletion of …

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Erratum To: Exercise-Induced Increases In Insulin Sensitivity After Bariatric Surgery Are Mediated By Muscle Extracellular Matrix Remodeling (Diabetes 2020;69:1675–1691), Wagner S. Dantas, Hamilton Roschel, Igor H. Murai, Saulo Gil, Gangarao Davuluri, Christopher L. Axelrod, Sujoy Ghosh, Susan S. Newman, Hui Zhang, Samuel K. Shinjo, Willian Das Neves, Carlos Merege-Filho, Walcy R. Teodoro, Vera L. Capelozzi, Rosa Maria Pereira, Fabiana B. Benatti, Ana L. De Sa-Pinto, Roberto De Cleva, Marco A. Santo, John P. Kirwan, Bruno Gualano Jun 2021

Erratum To: Exercise-Induced Increases In Insulin Sensitivity After Bariatric Surgery Are Mediated By Muscle Extracellular Matrix Remodeling (Diabetes 2020;69:1675–1691), Wagner S. Dantas, Hamilton Roschel, Igor H. Murai, Saulo Gil, Gangarao Davuluri, Christopher L. Axelrod, Sujoy Ghosh, Susan S. Newman, Hui Zhang, Samuel K. Shinjo, Willian Das Neves, Carlos Merege-Filho, Walcy R. Teodoro, Vera L. Capelozzi, Rosa Maria Pereira, Fabiana B. Benatti, Ana L. De Sa-Pinto, Roberto De Cleva, Marco A. Santo, John P. Kirwan, Bruno Gualano

Division of Basic Science Faculty Publications

In Table 2 of the above-cited article, the difference (95% CI) after intervention for VAT (kg) was inadvertently reported as 1.40 ( 2.17 to 4.98). The correct value is 0.140 ( 0.217 to 0.498). In the Supplementary Fig. 1 (study recruitment), it was reported that 230 patients were assessed for eligibility; the correct number of patients was 222. With regard to reasons for lost to follow-up, in the RYGB and RYGB+ET groups, respectively, it was reported that 8 and 8 patients did not undergo surgery and that 2 and 1 patients withdrew after surgery for personal reasons, when in fact …

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Human Plasma Proteomic Profiles Indicative Of Cardiorespiratory Fitness, Jeremy M. Robbins, Bennet Peterson, Daniela Schranner, Usman A. Tahir, Theresa Rienmüller, Shuliang Deng, Michelle J. Keyes, Daniel H. Katz, Pierre M.Jean Beltran, Jacob L. Barber, Christian Baumgartner, Steven A. Carr, Sujoy Ghosh, Changyu Shen, Lori L. Jennings, Robert Ross, Mark A. Sarzynski, Claude Bouchard, Robert E. Gerszten Jun 2021

Human Plasma Proteomic Profiles Indicative Of Cardiorespiratory Fitness, Jeremy M. Robbins, Bennet Peterson, Daniela Schranner, Usman A. Tahir, Theresa Rienmüller, Shuliang Deng, Michelle J. Keyes, Daniel H. Katz, Pierre M.Jean Beltran, Jacob L. Barber, Christian Baumgartner, Steven A. Carr, Sujoy Ghosh, Changyu Shen, Lori L. Jennings, Robert Ross, Mark A. Sarzynski, Claude Bouchard, Robert E. Gerszten

Division of Basic Science Faculty Publications

Maximal oxygen uptake (VO2max) is a direct measure of human cardiorespiratory fitness and is associated with health. However, the molecular determinants of interindividual differences in baseline (intrinsic) VO2max, and of increases of VO2max in response to exercise training (ΔVO2max), are largely unknown. Here, we measure ~5,000 plasma proteins using an affinity-based platform in over 650 sedentary adults before and after a 20-week endurance-exercise intervention and identify 147 proteins and 102 proteins whose plasma levels are associated with baseline VO2max and ΔVO2max, respectively. Addition of a protein biomarker score derived from these proteins to a score based on clinical traits improves …

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Load Balancing For Distributed Nonlocal Models Within Asynchronous Many-Task Systems, Pranav Gadikar, Patrick Diehl, Prashant K. Jha Jun 2021

Load Balancing For Distributed Nonlocal Models Within Asynchronous Many-Task Systems, Pranav Gadikar, Patrick Diehl, Prashant K. Jha

Faculty Publications

In this work, we consider the challenges of developing a distributed solver for models based on nonlocal interactions. In nonlocal models, in contrast to the local model, such as the wave and heat partial differential equations, the material interacts with neighboring points on a larger-length scale compared to the mesh discretization. In developing a fully distributed solver, the interaction over a length scale greater than mesh size introduces additional data dependencies among the compute nodes and communication bottleneck. In this work, we carefully look at these challenges in the context of nonlocal models; to keep the presentation specific to the …

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Risks Of Macrosomia Associated With Catechol-O-Methyltransferase Genotypes And Genetic-Epigenetic Interactions Among Children With And Without Gestational Diabetes Exposure, Liliana Aguayo, Weiqin Li, Brian T. Joyce, Junhong Leng, Yinan Zheng, Stephanie Shiau, Huikun Liu, Leishen Wang, Ru Gao, Andrea Baccarelli, Gang Hu, Lifang Hou Jun 2021

Risks Of Macrosomia Associated With Catechol-O-Methyltransferase Genotypes And Genetic-Epigenetic Interactions Among Children With And Without Gestational Diabetes Exposure, Liliana Aguayo, Weiqin Li, Brian T. Joyce, Junhong Leng, Yinan Zheng, Stephanie Shiau, Huikun Liu, Leishen Wang, Ru Gao, Andrea Baccarelli, Gang Hu, Lifang Hou

Population and Public Health Science Faculty Publications

Background: Gestational diabetes mellitus (GDM) is a major macrosomia risk factor. Variations in the catechol-O-methyltransferase (COMT; rs4680) genotypes are associated with heightened susceptibility to environmental exposures and nutritional conditions. However, macrosomia risks associated with COMT genetics, epigenetics, and the interaction between genetic and epigenetics among children with and without exposure to GDM are unknown. Methods: Data from women/children pairs (n = 1087) who participated in the Tianjin Gestational Diabetes Birth Cohort were used to examine the odds of being born with macrosomia associated with COMT-genotypes, 55 CpG sites located on the COMT gene, and genetic and epigenetic interactions. Odds of …

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Obesity And Cancer Risk In White And Black Adults: A Prospective Cohort Study, Justin C. Brown, Shengping Yang, Emily F. Mire, Xiaocheng Wu, Lucio Miele, Augusto Ochoa, Jovanny Zabaleta, Peter T. Katzmarzyk Jun 2021

Obesity And Cancer Risk In White And Black Adults: A Prospective Cohort Study, Justin C. Brown, Shengping Yang, Emily F. Mire, Xiaocheng Wu, Lucio Miele, Augusto Ochoa, Jovanny Zabaleta, Peter T. Katzmarzyk

Population and Public Health Science Faculty Publications

Objective: Anthropometric measures of obesity, including BMI and waist circumference (WC), do not quantify excess adiposity and metabolic abnormalities consistently across racial populations. This study tested the hypothesis that participant race modifies the association of anthropometric measures of obesity and cancer risk. Methods: This prospective cohort (The Pennington Center Longitudinal Study) included 18,296 adults, 6,405 (35.0%) male sex and 6,273 (34.3%) Black race. The primary exposures were BMI (weight in kilograms/height in meters squared) and WC (centimeters). The primary end point was the time from study enrollment to diagnosis of histologically confirmed invasive cancer. Results: During a median follow-up of …

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Striking The Right Balance: Evidence To Inform Combined Physical Activity And Sedentary Behavior Recommendations, Sebastien F.M. Chastin, Duncan E. Mcgregor, Stuart J.H. Biddle, Greet Cardon, Jean Philippe Chaput, Philippa M. Dall, Paddy C. Dempsey, Loretta Dipietro, Ulf Ekelund, Peter T. Katzmarzyk, Michael Leitzmann, Emmanuel Stamatakis, Hidde P. Van Der Ploeg Jun 2021

Striking The Right Balance: Evidence To Inform Combined Physical Activity And Sedentary Behavior Recommendations, Sebastien F.M. Chastin, Duncan E. Mcgregor, Stuart J.H. Biddle, Greet Cardon, Jean Philippe Chaput, Philippa M. Dall, Paddy C. Dempsey, Loretta Dipietro, Ulf Ekelund, Peter T. Katzmarzyk, Michael Leitzmann, Emmanuel Stamatakis, Hidde P. Van Der Ploeg

Population and Public Health Science Faculty Publications

Background: Crucial evidence gaps regarding: (1) the joint association of physical activity and sedentary time with health outcomes and (2) the benefits of light-intensity physical activity were identified during the development of recommendations for the World Health Organization Guidelines on physical activity and sedentary behavior (SB). The authors present alternative ways to evidence the relationship between health outcomes and time spent in physical activity and SB and examine how this could be translated into a combined recommendation in future guidelines. Methods: We used compositional data analysis to quantify the dose–response associations between the balance of time spent in physical activity …

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Unchurched Christian Nationalism And The 2016 U.S. Presidential Election*, Samuel Stroope, Paul Froese, Heather M. Rackin, Jack Delehanty Jun 2021

Unchurched Christian Nationalism And The 2016 U.S. Presidential Election*, Samuel Stroope, Paul Froese, Heather M. Rackin, Jack Delehanty

Faculty Publications

Prior research found that Christian nationalism was strongly associated with voting for Trump in the 2016 U.S. presidential election. However, the effects of Christian nationalism may depend on voters’ religiosity. Using national data, we assess whether the association between Christian nationalism and Trump support differed for churchgoers and nonchurchgoers and find that Christian nationalism is not significantly associated with Trump support among churchgoing voters. Instead, Christian nationalism is only significantly associated with Trump support among unchurched voters. These results suggest that while religious sentiments remain key correlates of political attitudes and behavior in the United States, these ties may have …

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Control Of A Polyol Process Using Reinforcement Learning, Wenbo Zhu, Ricardo Rendall, Ivan Castillo, Zhenyu Wang, Leo H. Chiang, Philippe Hayot, Jose A. Romagnoli Jun 2021

Control Of A Polyol Process Using Reinforcement Learning, Wenbo Zhu, Ricardo Rendall, Ivan Castillo, Zhenyu Wang, Leo H. Chiang, Philippe Hayot, Jose A. Romagnoli

Faculty Publications

Reinforcement learning is a branch of machine learning, where an agent gradually learns a control policy via a combination of exploration and interactions with a system. Recent successes of model-free reinforcement learning (RL) has attracted tremendous attention from the process control community. For instance, RL has been successfully applied in very complex control tasks (e.g., games such as chess or Go that contain large state spaces) and is shown to be robust to uncertainties. These findings indicate that there is a significant potential to leverage RL methods to improve the control of chemical processes. In this work, RL was applied …

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Female Reproductive Organs Of Brassica Napus Are More Sensitive Than Male To Transient Heat Stress, Sheng Chen, Renu Saradadevi, Miriam S. Vidotti, Roberto Fritsche-Neto, Jose Crossa, Kadambot H.M. Siddique, Wallace A. Cowling Jun 2021

Female Reproductive Organs Of Brassica Napus Are More Sensitive Than Male To Transient Heat Stress, Sheng Chen, Renu Saradadevi, Miriam S. Vidotti, Roberto Fritsche-Neto, Jose Crossa, Kadambot H.M. Siddique, Wallace A. Cowling

Faculty Publications

Oilseed rape (Brassica napus L.) is sensitive to heat stress during the reproductive stage, but it is not clear whether the male and female reproductive organs differ in their sensitivity to heat stress. In this study, full diallel crossing experiments were conducted among four genotypes of B. napus under control, moderate and high heat stress conditions for five days immediately before and two days after crossing. General combining ability (GCA), specific combining ability (SCA) and reciprocal effects were analyzed to evaluate the genetic basis of heat stress tolerance in male and female reproductive organs. High female temperature (Tf) and high …

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Cv-Α: Designing Validations Sets To Increase The Precision And Enable Multiple Comparison Tests In Genomic Prediction, Rafael Massahiro Yassue, Felipe Sabadin, Giovanni Galli, Filipe Couto Alves, Roberto Fritsche-Neto Jun 2021

Cv-Α: Designing Validations Sets To Increase The Precision And Enable Multiple Comparison Tests In Genomic Prediction, Rafael Massahiro Yassue, Felipe Sabadin, Giovanni Galli, Filipe Couto Alves, Roberto Fritsche-Neto

Faculty Publications

Usually, the comparison among genomic prediction models is based on validation schemes as Repeated Random Subsampling (RRS) or K-fold cross-validation. Nevertheless, the design of training and validation sets has a high effect on the way and subjectiveness we compare models. Those procedures cited above have an overlap across replicates that might cause an overestimated estimate and lack of residuals independence due to resampling issues and might cause less accurate results. Furthermore, ANOVA and multiple-comparison tests, such as Tukey, are not recommended due to assumptions unfulfilled regarding residuals' independence. Thus, we propose a new way to sample observations to build training …

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Oocyte Specific Lncrna Variant Rose Influences Oocyte And Embryo Development, Rajan Iyyappan, Daria Aleshkina, Linkai Zhu, Zongliang Jiang, Veronika Kinterova, Andrej Susor Jun 2021

Oocyte Specific Lncrna Variant Rose Influences Oocyte And Embryo Development, Rajan Iyyappan, Daria Aleshkina, Linkai Zhu, Zongliang Jiang, Veronika Kinterova, Andrej Susor

Faculty Publications

Fully grown mammalian oocytes store a large amount of RNA synthesized during the transcriptionally active growth stage. A large part of the stored RNA belongs to the long non-coding class which contain either transcriptional noise or important contributors to cellular physiology. Despite the expanding number of studies related to lncRNAs, their influence on oocyte physiology remains enigmatic. We found an oocyte specific antisense, long non-coding RNA, “Rose” (lncRNA in Oocyte Specifically Expressed) expressed in two variants containing two and three non-coding exons, respectively. Rose is localized in the nucleus of transcriptionally active oocyte and in embryo with polysomal occupancy in …

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Nutrition Interventions In Low-Income Rural And Urban Retail Environments: A Systematic Review, Linda Fergus, Katherine Seals, Denise Holston Jun 2021

Nutrition Interventions In Low-Income Rural And Urban Retail Environments: A Systematic Review, Linda Fergus, Katherine Seals, Denise Holston

Faculty Publications

Background: Nutrition interventions promoting healthy food choices aim to address health challenges of residents in low-income environments. Research about the effectiveness of nutrition interventions in low-income populations is limited, particularly for those in rural areas. Behavioral economics (BE) strategies demonstrate effectiveness for improving eating behaviors in some settings. However, the efficacy of BE interventions in retail food stores serving low-income populations residing in rural and urban geographies is nascent. Objective: This systematic literature review aims to identify and compare nutrition interventions implemented in rural and urban low-income retail food stores, including BE strategies when applied. Methods: This review was conducted …

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The Moderating Role Of The Built Environment In Prenatal Lifestyle Interventions, Suzanne Phelan, Fred Marquez, Leanne M. Redman, Sonia Arteaga, Rebecca Clifton, Brian A. Grice, Debra Haire-Joshu, Corby K. Martin, Candice A. Myers, Jeremy Pomeroy, Eileen Vincent, Linda Van Horn, Alan Peaceman, Maxine Ashby-Thompson, Dympna Gallagher, Xavier Pi-Sunyer, Trisha Boekhoudt, Kimberly Drews, Greg Brown Jun 2021

The Moderating Role Of The Built Environment In Prenatal Lifestyle Interventions, Suzanne Phelan, Fred Marquez, Leanne M. Redman, Sonia Arteaga, Rebecca Clifton, Brian A. Grice, Debra Haire-Joshu, Corby K. Martin, Candice A. Myers, Jeremy Pomeroy, Eileen Vincent, Linda Van Horn, Alan Peaceman, Maxine Ashby-Thompson, Dympna Gallagher, Xavier Pi-Sunyer, Trisha Boekhoudt, Kimberly Drews, Greg Brown

Clinical Research Faculty Publications

This study examined whether the neighborhood built environment moderated gestational weight gain (GWG) in LIFE-Moms clinical trials. Participants were 790 pregnant women (13.9 weeks’ gestation) with overweight or obesity randomized within four clinical centers to standard care or lifestyle intervention to reduce GWG. Geographic information system (GIS) was used to map the neighborhood built environment. The intervention relative to standard care significantly reduced GWG (coefficient = 0.05; p = 0.005) and this effect remained significant (p < 0.03) after adjusting for built environment variables. An interaction was observed for presence of fast food restaurants (coefficient = −0.007; p = 0.003). Post hoc tests based on a median split showed that the intervention relative to standard care reduced GWG in participants living in neighborhoods with lower fast food density 0.08 [95% CI, 0.03,0.12] kg/week (p = 0.001) but not in those living in areas with higher fast food density (0.02 [−0.04, 0.08] kg/week; p = 0.55). Interaction effects suggested less intervention efficacy among women living in neighborhoods with more grocery/convenience stores (coefficient = −0.005; p = 0.0001), more walkability (coefficient −0.012; p = 0.007) and less crime (coefficient = 0.001; p = 0.007), but post-hoc tests were not significant. No intervention x environment interaction effects were observed for total number of eating establishments or tree canopy. Lifestyle interventions during pregnancy were effective across diverse physical environments. Living in environments with easy access to fast food restaurants may limit efficacy of prenatal lifestyle interventions, but future research is needed to replicate these findings.

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Control Of A Natural Gas Liquid Recovery Plant In A Gsp Unit Under Feed And Composition Disturbances, Marta Mandis, Jorge A. Chebeir, Stefania Tronci, Roberto Baratti, José A. Romagnoli Jun 2021

Control Of A Natural Gas Liquid Recovery Plant In A Gsp Unit Under Feed And Composition Disturbances, Marta Mandis, Jorge A. Chebeir, Stefania Tronci, Roberto Baratti, José A. Romagnoli

Faculty Publications

Recent technological improvements have driven the rapid increase in natural gas production from unconventional reservoirs. The heaviest hydrocarbon fraction of this fossil fuel, the so-called natural gas liquids (NGL), have greater economic interest justifying the attention on its separation process from the raw gas. Various process schemes have been developed and studied for the NGL recovery, including the conventional, cold residue recycle (CRR), and the gas subcooled process (GSP). This study aims to assess different control strategies for a GSP unit and determine the most appropriate and effective process control scheme. For this, the dynamic responses for each control scheme …

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Many-Objective Simulation-Based Optimization Of An Air Separation Unit, Santiago D. Salas, Dany De Cecchis, Bryan V. Piguave, José A. Romagnoli Jun 2021

Many-Objective Simulation-Based Optimization Of An Air Separation Unit, Santiago D. Salas, Dany De Cecchis, Bryan V. Piguave, José A. Romagnoli

Faculty Publications

Air separation systems are crucial in the production of oxygen, which has gained particular relevance during the COVID-19 outbreak. Mechanical ventilation can compensate respiratory deficiencies along with the use of medical oxygen in vulnerable patients infected with this disease. In this contribution, a many-objective simulation-based optimization framework is proposed for determining eleven decision variables for the operation of an air separation unit. The framework combines the capabilities of the process simulator PRO/II with a Python environment. Three objective functions are optimized together towards the construction of a 3-D Pareto front. Results provide insightful information regarding the most adequate operating conditions …

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Quantitative Prediction Of Rapid Solidification By Integrated Atomistic And Phase-Field Modeling, Sepideh Kavousi, Brian R. Novak, Dorel Moldovan, Mohsen Asle Zaeem Jun 2021

Quantitative Prediction Of Rapid Solidification By Integrated Atomistic And Phase-Field Modeling, Sepideh Kavousi, Brian R. Novak, Dorel Moldovan, Mohsen Asle Zaeem

Faculty Publications

Systematic integration of atomistic simulations with phase-field modeling is presented for quantitative predictions of cellular growth and solute trapping during solidification of alloys for solidification velocities relevant to additive manufacturing. For parametrization of the phase-field model, molecular dynamics simulations are utilized as an alternative to complex experiments to obtain the anisotropic crystal-melt interface free energy, kinetic coefficient, and diffusive interface velocity. The accuracy of this integrated model is tested for rapid solidification of Ti-3.4at.%Ni alloy. The predicted solute trapping of the proposed phase-field model is comparable with the continuous growth model for solidification velocities of additive manufacturing. The predicted primary …

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Hyperpolarized Magnetic Resonance And Artificial Intelligence: Frontiers Of Imaging In Pancreatic Cancer, José S. Enriquez, Yan Chu, Shivanand Pudakalakatti, Kang Lin Hsieh, Duncan Salmon, Prasanta Dutta, Niki Zacharias Millward, Eugene Lurie, Steven Millward, Florencia Mcallister, Anirban Maitra, Subrata Sen, Ann Killary, Jian Zhang, Xiaoqian Jiang, Pratip K. Bhattacharya, Shayan Shams Jun 2021

Hyperpolarized Magnetic Resonance And Artificial Intelligence: Frontiers Of Imaging In Pancreatic Cancer, José S. Enriquez, Yan Chu, Shivanand Pudakalakatti, Kang Lin Hsieh, Duncan Salmon, Prasanta Dutta, Niki Zacharias Millward, Eugene Lurie, Steven Millward, Florencia Mcallister, Anirban Maitra, Subrata Sen, Ann Killary, Jian Zhang, Xiaoqian Jiang, Pratip K. Bhattacharya, Shayan Shams

Faculty Publications

Background: There is an unmet need for noninvasive imaging markers that can help identify the aggressive subtype(s) of pancreatic ductal adenocarcinoma (PDAC) at diagnosis and at an earlier time point, and evaluate the efficacy of therapy prior to tumor reduction. In the past few years, there have been two major developments with potential for a significant impact in establishing imaging biomarkers for PDAC and pancreatic cancer premalignancy: (1) hyperpolarized metabolic (HP)-magnetic resonance (MR), which increases the sensitivity of conventional MR by over 10,000-fold, enabling real-time metabolic measurements; and (2) applications of artificial intelligence (AI). Objective: Our objective of this review …

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The Undiscovered Country, Luke A. Atkinson May 2021

The Undiscovered Country, Luke A. Atkinson

LSU Master's Theses

The Undiscovered Country is a compendium of paintings, prose, and poetry that defines the place of creation. This work is a response to life as I find it, in as honest and truthful a way as my ability allows. Sergei Prokofiev said, “The more the sea rages, the more precious a hard rock among the waves becomes.” My paintings are solid rocks that I cling to. Hopefully, someone else can too.

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Remembrance, Nhu Ngoc Quynh Dao May 2021

Remembrance, Nhu Ngoc Quynh Dao

LSU Master's Theses

The artwork in the collection, “Remembrance,” is a collection of three-dimensional paper toys inspired by the culture of Dong Son civilization. The study was intended as an investigation into a mysterious, once-lost kingdom that flourished in the northern delta region of Vietnam. The designs and art motifs found on bronze artifacts from Dong Son have been scrutinized, then compared with stories in Vietnamese legends to decipher their hidden message and symbolism. I collected and translated the design motifs digitally as part of the creative process before analyzing their philosophies and intentions to not only introduce the culture but also accurately …

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Evaluating Hazus-Mh Flood Model Consequence Assessments Of Urban And Rural Coastal Landscapes Using Adcirc Generated Flood Data From Hurricanes Isaac And Laura, Katherine Faye Jones May 2021

Evaluating Hazus-Mh Flood Model Consequence Assessments Of Urban And Rural Coastal Landscapes Using Adcirc Generated Flood Data From Hurricanes Isaac And Laura, Katherine Faye Jones

LSU Master's Theses

Emergency managers rely on a variety on models and outputs, such as Hazards United States Multi- Hazard (Hazus-MH) and the Coastal Emergency Risk Assessment (CERA) visualization tool, to make decisions in the days leading up to and following hurricane events. This study focuses on using Hurricane Isaac (2012) and Hurricane Laura (2020).ASGS-CERA geoTIFFs, created from generated ADCIRC Prediction System data, in the Hazus-MH Flood Model to test using these two tools together in urban and rural areas. These ASGS-CERA integrated Hazus-MH studies were compared with Hazus-MH studies using the standard Hazus-MH surge methodology. They were tested for accuracy in both …

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Blowout - Capping - Fracturing - Relief Well, A Full Cycle Workflow, Youssuf A. Elnoamany May 2021

Blowout - Capping - Fracturing - Relief Well, A Full Cycle Workflow, Youssuf A. Elnoamany

LSU Master's Theses

Broaching is defined as the uncontrolled release of hydrocarbons to ocean seafloor after a loss of subsurface well control event. Failed attempts to cap the offshore wells undergoing worst case discharge may lead to hydraulic fracture initiation and subsequent propagation, leading to renewed release of hydrocarbon to the seafloor. During the capping stack shut-in process, pressure build-up will occur along the wellbore, exposing locations of possible fracture initiation to overpressurized fluid, such as directly below the casing shoe, and critical points along the well casing. Shall there be enough build-up pressure to exceed the minimum horizontal stress in an exposed …

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Joseph Ducreux And The Physiognomical Millieu, Josiah Phelps May 2021

Joseph Ducreux And The Physiognomical Millieu, Josiah Phelps

LSU Master's Theses

Joseph Ducreux was an eighteenth-century artist from Nancy, France, whose grimacing self-portraits made their way into to the Parisian Salons during the age of the French Revolution. His self-portraits showcased himself in a state of yawning, state of laughing, state of self-confidence, and state of fear. This series is believed to derive from his study of physiognomy and his knowledge of physiognomical studies by such Enlightenment scholars as Johann Kasper Lavater. It will contextualize Ducreux’s his oeuvre of self-portraits and his commercial portraits including those previously executed for the French court, with the influence of the pseudo-science of physiognomy. The …

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Local Calibration Of Pavement Me And Performance Evaluation Of Pavement Rehabilitation And Preservation Asphalt Overlays In Louisiana, Farzana Moon May 2021

Local Calibration Of Pavement Me And Performance Evaluation Of Pavement Rehabilitation And Preservation Asphalt Overlays In Louisiana, Farzana Moon

LSU Master's Theses

Asphalt overlays can be categorized as pavement rehabilitation structural overlays or pavement preservation overlays in terms of the thickness and timing of maintenance activities. Pavement rehabilitation overlay contributes to the structural enhancement of pavements and pavement preservation overlays generally provide functional improvement to an existing pavement. In recent times, the pavement design approach employed by the Louisiana Department of Transportation and Development (LADOTD) has been transitioning from the 1993 AASHTO design procedure to a locally calibrated Pavement ME method. The AASHTOWare Pavement ME (Mechanistic-Empirical) design procedure is considered the modern approach to pavement design. Significant updates have been introduced in …

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The Stylistic Development Of Jean Despujols (1886-1965), Kelly M. Ward May 2021

The Stylistic Development Of Jean Despujols (1886-1965), Kelly M. Ward

LSU Master's Theses

This thesis is the first comprehensive scholarly analysis of the life and most extant works by Jean Despujols. The French and later naturalized American painter, writer, poet, philosopher, deep-thinker, and mystic was best known for his Neoclassical and academic style. This thesis briefly discusses the artist’s beginnings as a young painter at the School of Fine Arts in Bordeaux and in Paris, his sketches in the trenches of the First World War, his time at the Villa Medicis after winning the distinguished Rome Prize, and his paintings and thoughts as a philosopher and political writer throughout his life. An outstanding …

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Disentangling The Effects Of Vapor Pressure Deficit And Soil Water Availability On Canopy Conductance In A Seasonal Tropical Forest During The 2015 El Niño Drought, Yilin Fang, L. Ruby Leung, Brett T. Wolfe, Matteo Detto, Ryan G. Knox, Nate G. Mcdowell, Charlotte Grossiord, Chonggang Xu, Bradley O. Christoffersen, Pierre Gentine, Charles D. Koven, Jeffrey Q. Chambers May 2021

Disentangling The Effects Of Vapor Pressure Deficit And Soil Water Availability On Canopy Conductance In A Seasonal Tropical Forest During The 2015 El Niño Drought, Yilin Fang, L. Ruby Leung, Brett T. Wolfe, Matteo Detto, Ryan G. Knox, Nate G. Mcdowell, Charlotte Grossiord, Chonggang Xu, Bradley O. Christoffersen, Pierre Gentine, Charles D. Koven, Jeffrey Q. Chambers

Faculty Publications

Water deficit in the atmosphere and soil are two key interactive factors that constrain transpiration and vegetation productivity. It is not clear which of these two factors is more important for the water and carbon flux response to drought stress in ecosystems. In this study, field data and numerical modeling were used to isolate their impact on evapotranspiration (ET) and gross primary productivity (GPP) at a tropical forest site in Barro Colorado Island (BCI), Panama, focusing on their response to the drought induced by the El Niño event of 2015–2016. Numerical simulations were performed using a plant hydrodynamic scheme (HYDRO) …

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Wildfires: Vegetation Recovery And The Potential For Future Fires, Moses Okonkwo May 2021

Wildfires: Vegetation Recovery And The Potential For Future Fires, Moses Okonkwo

LSU Master's Theses

Analysis of satellite imagery combined with Geographic Information Systems (GIS), often allows for observing the increasing changes in land cover dynamics. These changes are often on a macro scale buoyed by natural hazards such as wildfires. This study examines the vegetation recovery dynamics by using multispectral data and also gleaned insight in the applications of Hyperspectral satellite imagery in the study of vegetation dynamics. Both Landsat 8 Operational Land Imager (OLI) (multispectral) and the Earth-Observing One (EO-1) (hyperspectral) data are freely available; however the former has a limited spatial and temporal coverage. The relationship between vegetation recovery, elevation, aspect and …

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"Airbnb Go Home:" Tourism Frictions And Short-Term Rentals In New Orleans, Madeline R. Fussell May 2021

"Airbnb Go Home:" Tourism Frictions And Short-Term Rentals In New Orleans, Madeline R. Fussell

LSU Master's Theses

This thesis examines the concerns and conflicts around short-term rental (STR) properties in New Orleans neighborhoods. Using data from collected from critical discourse analysis, semi-structured interviews and social media posts, this paper analyzes the ways the city of New Orleans, residents of the city, STR hosts, and platforms like Airbnb discuss issues of safety, displacement, rising costs of living, as well as responsible STR practices. To understand the complexities of the issues people, have with short-term rental properties, this project approaches STRs from a housing and gentrification lens to understand the role these properties play within in the daily atmospheres …

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Mixed (F)Ixed Messages, Lauren A. Verrett May 2021

Mixed (F)Ixed Messages, Lauren A. Verrett

LSU Master's Theses

Many individuals have an understanding that our lives have a timeline, and this timeline is full of objectives that we perceive as absolutes. Through personal observations it has become apparent that there are many amazing men and woman that are stagnant because they were raised to believe that meeting these goalposts are a priority. In an age of individualism, it is evident that every individual has control of their own life through their actions. However, in this same age of technology and social media, the anxiety of not meeting certain requirements or standards is even more apparent than previous generations. …

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Quantifying Discharge On The Lower Mississippi River Physical Model, Taylor S. Cagle May 2021

Quantifying Discharge On The Lower Mississippi River Physical Model, Taylor S. Cagle

LSU Master's Theses

The Lower Mississippi River Physical Model (LMRPM) is a distorted, movable-bed physical model that replicates the hydraulics and bedload (sand) transport of the lower 195 miles of the Mississippi River. One year of flow and sediment transport on the prototype can be modeled in approximately one hour. With the ability to simulate long periods of time on the Lower Mississippi River in such a short time frame, the model can provide unique insight into subjects such as the potential effects from relative sea level rise on the lower river’s hydraulics and sediment transport. Quantifying discharge on the LMRPM is an …

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