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Hd-Tdcs Of Primary And Higher-Order Motor Cortex Affects Action Word Processing, Karim Johari, Nicholas Riccardi, Svetlana Malyutina, Mirage Modi, Rutvik H. Desai Sep 2022

Hd-Tdcs Of Primary And Higher-Order Motor Cortex Affects Action Word Processing, Karim Johari, Nicholas Riccardi, Svetlana Malyutina, Mirage Modi, Rutvik H. Desai

Faculty Publications

The contribution of action-perception systems of the brain to lexical semantics remains controversial. Here, we used high-definition transcranial direct current stimulation (HD-tDCS) in healthy adults to examine the role of primary (left hand motor area; HMA) and higher-order (left anterior inferior parietal lobe; aIPL) action areas in action-related word processing (action verbs and manipulable nouns) compared to non-action-related control words (non-action verbs and non-manipulable nouns). We investigated stimulation-related effects at three levels of semantic processing: subliminal, implicit, and explicit. Broadly, we found that stimulation of HMA and aIPL resulted in relative facilitation of action-related language processing compared to non-action. HMA …

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The Impact Of Social Support Sources On Lgbtq Adolescents, Kaitlyn C. Mccauley Sep 2022

The Impact Of Social Support Sources On Lgbtq Adolescents, Kaitlyn C. Mccauley

LSU Master's Theses

Research demonstrates that adolescents social support plays an important role in protecting against adverse events (e.g., Brewin & MacCarthy, 1989; Muzik et al., 2017). LGBQ adolescents have been shown to experience greater adverse experiences such a daily microaggressions and higher rates of both childhood adversity (Baams, 2018) and peer victimization (Kosciw et al., 2014). Increased stressors often lead to poorer outcomes in this population. Social support research for adolescents has shown that different sources of social support have shown to buffer these reported issues (e.g., greater parent and peer support buffers suicidal ideation, Fredrick et al., 2018). Studies with LGBQ …

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A Numerical Reassessment Of The Gulf Of Mexico Carbon System In Connection With The Mississippi River And Global Ocean, Le Zhang, Z. George Xue Sep 2022

A Numerical Reassessment Of The Gulf Of Mexico Carbon System In Connection With The Mississippi River And Global Ocean, Le Zhang, Z. George Xue

Faculty Publications

Coupled physical-biogeochemical models can fill the spatial and temporal gap in ocean carbon observations. Challenges of applying a coupled physical-biogeochemical model in the regional ocean include the reasonable prescription of carbon model boundary conditions, lack of in situ observations, and the oversimplification of certain biogeochemical processes. In this study, we applied a coupled physical-biogeochemical model (Regional Ocean Modelling System, ROMS) to the Gulf of Mexico (GoM) and achieved an unprecedented 20-year high-resolution (5 km, 1/22°) hindcast covering the period of 2000 to 2019. The biogeochemical model incorporated the dynamics of dissolved organic carbon (DOC) pools and the formation and dissolution …

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Responses Of Phytoplankton Communities Driven By Differences Of Source Water Intrusions In The El Niño And La Niña Events In The Taiwan Strait During The Early Spring, Yanping Zhong, Edward A. Laws, Jiafu Zhuang, Jingxiao Wang, Peixuan Wang, Caiyun Zhang, Xin Liu, Bangqin Huang Sep 2022

Responses Of Phytoplankton Communities Driven By Differences Of Source Water Intrusions In The El Niño And La Niña Events In The Taiwan Strait During The Early Spring, Yanping Zhong, Edward A. Laws, Jiafu Zhuang, Jingxiao Wang, Peixuan Wang, Caiyun Zhang, Xin Liu, Bangqin Huang

Faculty Publications

The El Niño Southern Oscillation (ENSO) is one of the most important drivers of interannual variations of marine ecosystems, especially monsoonal ecosystems. The channel effect in a strait amplifies the impact of monsoons and may be an ideal area to study ecosystem responses to ENSO events. Previous studies have shown that physical processes in the Taiwan Strait (TWS) vary during the different ENSO phases, but the biological responses are still unclear. In this study, we found clear differences in the physical, chemical, and biological characteristics of the TWS between different ENSO phases based on data from satellites and field cruises …

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Editorial: Quantum Light For Imaging, Sensing And Spectroscopy, Roberto De J. León-Montiel, Mario A. Quiroz-Juárez, Omar S. Magaña-Loaiza, Juan P. Torres Sep 2022

Editorial: Quantum Light For Imaging, Sensing And Spectroscopy, Roberto De J. León-Montiel, Mario A. Quiroz-Juárez, Omar S. Magaña-Loaiza, Juan P. Torres

Faculty Publications

No abstract provided.

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Pest Population Dynamics Are Related To A Continental Overwintering Gradient, Douglas Lawton, Anders S. Huseth, George G. Kennedy, Amy C. Morey, William D. Hutchison, Dominic D. Reisig, Seth J. Dorman, De Shae Dillard, Robert C. Venette, Russell L. Groves, John J. Adamczyk, Izailda Barbosa Dos Santos, Tracey Baute, Sebe Brown, Eric Burkness, Ashley Dean, Galen P. Dively, Hélène B. Doughty, Shelby J. Fleischer, Jessica Green, Jeremy K. Greene, Krista Hamilton, Erin Hodgson, Thomas Hunt, David Kerns, Billy Rogers Leonard, Sean Malone, Fred Musser, David Owens, John C. Palumbo, Silvana Paula-Moraes, Julie A. Peterson, Ricardo Ramirez Sep 2022

Pest Population Dynamics Are Related To A Continental Overwintering Gradient, Douglas Lawton, Anders S. Huseth, George G. Kennedy, Amy C. Morey, William D. Hutchison, Dominic D. Reisig, Seth J. Dorman, De Shae Dillard, Robert C. Venette, Russell L. Groves, John J. Adamczyk, Izailda Barbosa Dos Santos, Tracey Baute, Sebe Brown, Eric Burkness, Ashley Dean, Galen P. Dively, Hélène B. Doughty, Shelby J. Fleischer, Jessica Green, Jeremy K. Greene, Krista Hamilton, Erin Hodgson, Thomas Hunt, David Kerns, Billy Rogers Leonard, Sean Malone, Fred Musser, David Owens, John C. Palumbo, Silvana Paula-Moraes, Julie A. Peterson, Ricardo Ramirez

Faculty Publications

Overwintering success is an important determinant of arthropod populations that must be considered as climate change continues to influence the spatiotemporal population dynamics of agricultural pests. Using a long-term monitoring database and biologically relevant overwintering zones, we modeled the annual and seasonal population dynamics of a common pest, Helicoverpa zea (Boddie), based on three overwintering suitability zones throughout North America using four decades of soil temperatures: the southern range (able to persist through winter), transitional zone (uncertain overwintering survivorship), and northern limits (unable to survive winter). Our model indicates H. zea population dynamics are hierarchically structured with continental-level effects that …

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A Comparison Of Intertidal Metazoan Biodiversity Among Different Salinity Zones Of Louisiana Coastal Marshes, Claudia Husseneder, Patrick Rayle, Benjamin G. Aker, W. Kelley Thomas, Lane D. Foil Sep 2022

A Comparison Of Intertidal Metazoan Biodiversity Among Different Salinity Zones Of Louisiana Coastal Marshes, Claudia Husseneder, Patrick Rayle, Benjamin G. Aker, W. Kelley Thomas, Lane D. Foil

Faculty Publications

Tidal marshes are among the most valuable, productive, and vulnerable ecosystems with high biodiversity. Louisiana’s saltmarshes are endangered by natural and man-made stressors, including oil pollution, saltwater intrusion, and land loss due to sea level rise and erosion. Freshwater diversions have been planned to restore sediment input from the Mississippi River to rebuild marsh habitats in South Louisiana. These proposed diversions will undoubtedly change salinity levels, which is a major controlling factor in the distribution of marsh organisms, including those in soil; however, detailed pre-event inventories are lacking. This study describes the diversity of metazoan meiofauna (organisms between 45 and …

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Discovery And Validation Of Grain Shape Loci In U.S. Rice Germplasm Through Haplotype Characterization, Brijesh Angira, Tommaso Cerioli, Adam N. Famoso Sep 2022

Discovery And Validation Of Grain Shape Loci In U.S. Rice Germplasm Through Haplotype Characterization, Brijesh Angira, Tommaso Cerioli, Adam N. Famoso

Faculty Publications

Rice grain shape is a major determinant of rice market value and the end-use. We mapped quantitative trait loci (QTL) for grain shape traits in a bi-parental recombinant inbred line population (Trenasse/Jupiter) and discovered two major grain length QTLs—qGL3.1 and qGL7.1. Previously, a major grain shape gene GS3 was reported in the qGL3.1 region and grain length gene GL7 was reported to be encompassing qGL7.1 locus. The re-sequencing SNP data on the International Rice Research Institute (IRRI) 3K Rice Genome Project (RGP) panel were obtained from the IRRI SNP-Seek database for both genes and haplotype diversity was characterized for each …

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Stereoisomers Of An Aryl Pyrazole Glucocorticoid Receptor Agonist Scaffold Elicit Differing Anti-Inflammatory Responses, Ashley M. Lato, Susan J. Burke, Maggie P. Ducote, Brandon J. Kennedy, J. Jason Collier, Shawn R. Campagna Sep 2022

Stereoisomers Of An Aryl Pyrazole Glucocorticoid Receptor Agonist Scaffold Elicit Differing Anti-Inflammatory Responses, Ashley M. Lato, Susan J. Burke, Maggie P. Ducote, Brandon J. Kennedy, J. Jason Collier, Shawn R. Campagna

Division of Basic Science Faculty Publications

Glucocorticoids (GCs) are heavily prescribed to control inflammation in various human diseases; however, side effects associated with GCs are well documented and lead to serious metabolic and immunological complications with long-term use. The paradigm for GC function includes two well described modes of activity: dimer formation of the glucocorticoid receptor (GR) promotes transactivation, while monomeric interaction with co-regulators promotes transrepression. Previously, a set of aryl pyrazole-derived glucocorticoid receptor agonists (APGRAs) with potency rivaling current commercially available glucocorticoids were described. In this study, a further series of existing and novel stereopure APGRAs were thoroughly examined for biological activity and evaluated for …

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Impact Of Extreme Heatwaves On Population Exposure In China Due To Additional Warming, Leibin Wang, Robert V. Rohli, Qigen Lin, Shaofei Jin, Xiaodong Yan Sep 2022

Impact Of Extreme Heatwaves On Population Exposure In China Due To Additional Warming, Leibin Wang, Robert V. Rohli, Qigen Lin, Shaofei Jin, Xiaodong Yan

Faculty Publications

Extreme heatwaves are among the most important climate-related disasters affecting public health. Assessing heatwave-related population exposures under different warming scenarios is critical for climate change adaptation. Here, the Coupled Model Intercomparison Project phase 6 (CMIP6) multi-model ensemble output results are applied over several warming periods in the Intergovernmental Panel on Climate Change AR6 report, to estimate China’s future heatwave population exposure under 1.5 °C and 2.0 °C warming scenarios. Our results show a significant increase in projected future annual heatwave days (HD) under both scenarios. With an additional temperature increase of 0.5 °C to 2.0 °C of warming, by mid-century …

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Advances In Research And Applications Of Co2-Based Demand-Controlled Ventilation In Commercial Buildings: A Critical Review Of Control Strategies And Performance Evaluation, Xing Lu, Zhihong Pang, Yangyang Fu, Zheng O'Neill Sep 2022

Advances In Research And Applications Of Co2-Based Demand-Controlled Ventilation In Commercial Buildings: A Critical Review Of Control Strategies And Performance Evaluation, Xing Lu, Zhihong Pang, Yangyang Fu, Zheng O'Neill

Faculty Publications

The carbon dioxide (CO2)-based demand-controlled ventilation (DCV) has attracted prompt attention from the Heating, Ventilation, and Air-Conditioning (HVAC) industry since its very first invention. Thereafter it has gone through several revolutions due to the rapid advancement in control and sensing technologies. Although a great variety of CO2-based DCV control strategies have been developed in the last two decades, there lacks a holistic literature review that systematically analyzes and summarizes advances and applications of CO2-based DCV in commercial buildings. This paper examines the recent advances in the CO2-based DCV in commercial buildings and focuses on discussing the control-related issues in the …

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The Double-Edged Sword Of Safety Training For Safety Behavior: The Critical Role Of Psychological Factors During Covid-19, Xin Ning, Jiwen Huang, Chunlin Wu, Tong Liu, Chao Wang Sep 2022

The Double-Edged Sword Of Safety Training For Safety Behavior: The Critical Role Of Psychological Factors During Covid-19, Xin Ning, Jiwen Huang, Chunlin Wu, Tong Liu, Chao Wang

Faculty Publications

Safety training (ST) is the primary means of avoiding unsafe behaviors, but it has not achieved the expected impact on improving workplace safety because of the high psychological stress it brings to workers. The coronavirus disease 2019 (COVID-19) further threatens workers’ psychological conditions, thereby diminishing the effectiveness of ST. However, the existing literature has mainly laid emphasis on the bright side of ST and neglected examining its impact on safety behavior (SB) from detrimental psychological factors. Drawing from the conservation of resources theory, a novel two-staged model was established to understand how these psychological factors mediate and moderate the association …

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Redox-Engineering Enhances Maize Thermotolerance And Grain Yield In The Field, Stuart A. Sprague, Tej Man Tamang, Trevor Steiner, Qingyu Wu, Ying Hu, Tayebeh Kakeshpour, Jungeun Park, Jian Yang, Zhao Peng, Blake Bergkamp, Impa Somayanda, Morgan Peterson, Ely Oliveira Garcia, Yangfan Hao, Paul St. Amand, Guihua Bai, Paul A. Nakata, Ivo Rieu, David P. Jackson, Ninghui Cheng, Barbara Valent, Kendal D. Hirschi, Sv Krishna Jagadish, Sanzhen Liu, Frank F. White, Sunghun Park Sep 2022

Redox-Engineering Enhances Maize Thermotolerance And Grain Yield In The Field, Stuart A. Sprague, Tej Man Tamang, Trevor Steiner, Qingyu Wu, Ying Hu, Tayebeh Kakeshpour, Jungeun Park, Jian Yang, Zhao Peng, Blake Bergkamp, Impa Somayanda, Morgan Peterson, Ely Oliveira Garcia, Yangfan Hao, Paul St. Amand, Guihua Bai, Paul A. Nakata, Ivo Rieu, David P. Jackson, Ninghui Cheng, Barbara Valent, Kendal D. Hirschi, Sv Krishna Jagadish, Sanzhen Liu, Frank F. White, Sunghun Park

Faculty Publications

Increasing populations and temperatures are expected to escalate food demands beyond production capacities, and the development of maize lines with better performance under heat stress is desirable. Here, we report that constitutive ectopic expression of a heterologous glutaredoxin S17 from Arabidopsis thaliana (AtGRXS17) can provide thermotolerance in maize through enhanced chaperone activity and modulation of heat stress-associated gene expression. The thermotolerant maize lines had increased protection against protein damage and yielded a sixfold increase in grain production in comparison to the non-transgenic counterparts under heat stress field conditions. The maize lines also displayed thermotolerance in the reproductive stages, resulting in …

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Susceptibility Of Different Life Stages Of Kudzu Bug Megacopta Cribraria (F.) (Hemiptera: Plataspidae) To Two Different Native Strains Of Beauveria Bassiana, James Paul Glover, Maribel Portilla, Katherine Parys, Clint Allen, Justin George, Gadi V.P. Reddy Sep 2022

Susceptibility Of Different Life Stages Of Kudzu Bug Megacopta Cribraria (F.) (Hemiptera: Plataspidae) To Two Different Native Strains Of Beauveria Bassiana, James Paul Glover, Maribel Portilla, Katherine Parys, Clint Allen, Justin George, Gadi V.P. Reddy

Faculty Publications

This is the first study that examined and compared the survival, LC50, and RR50 estimates of Megacopta cribraria F. (Hemiptera: Plataspidae) nymphs and adults that were exposed to two native Beauveria bassiana isolates (Previously codified as NI8 and KUDSC strains) at four concentrations. The greatest reduction in survival and mortality was observed primarily on or after 10 d post-exposure to B. bassiana isolates. Survival of early instars (2nd, 3rd) were not affected by either strains or concentration at 3 d and 5 d post-exposure. Survival of later instars (5th) and adults was significantly reduced when exposed to the KUDSC strain …

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Climate Trends And Behavior Of A Model Amazonian Terrestrial Insectivore, Black-Faced Antthrush, Indicate Adjustment To Hot And Dry Conditions, Vitek Jirinec, Elisa C. Elizondo, Patricia F. Rodrigues, Philip C. Stouffer Sep 2022

Climate Trends And Behavior Of A Model Amazonian Terrestrial Insectivore, Black-Faced Antthrush, Indicate Adjustment To Hot And Dry Conditions, Vitek Jirinec, Elisa C. Elizondo, Patricia F. Rodrigues, Philip C. Stouffer

Faculty Publications

Rainforest loss threatens terrestrial insectivorous birds throughout the world's tropics. Recent evidence suggests these birds are declining in undisturbed Amazonian rainforest, possibly due to climate change. Here, we first asked whether Amazonian terrestrial insectivorous birds were exposed to increasingly extreme ambient conditions using 38 years of climate data. We found long-term trends in temperature and precipitation at our study site, especially in the dry season, which was ~1.3°C hotter and 21% drier in 2019 than in 1981. Second, to test whether birds actively avoided hot and dry conditions, we used field sensors to identify periodic intervals of ambient extremes and …

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Effectiveness Of Early Time-Restricted Eating For Weight Loss, Fat Loss, And Cardiometabolic Health In Adults With Obesity: A Randomized Clinical Trial, Humaira Jamshed, Felicia L. Steger, David R. Bryan, Joshua S. Richman, Amy H. Warriner, Cody J. Hanick, Corby K. Martin, Sarah Jeanne Salvy, Courtney M. Peterson Sep 2022

Effectiveness Of Early Time-Restricted Eating For Weight Loss, Fat Loss, And Cardiometabolic Health In Adults With Obesity: A Randomized Clinical Trial, Humaira Jamshed, Felicia L. Steger, David R. Bryan, Joshua S. Richman, Amy H. Warriner, Cody J. Hanick, Corby K. Martin, Sarah Jeanne Salvy, Courtney M. Peterson

Clinical Research Faculty Publications

Importance: It is unclear how effective intermittent fasting is for losing weight and body fat, and the effects may depend on the timing of the eating window. This randomized trial compared time-restricted eating (TRE) with eating over a period of 12 or more hours while matching weight-loss counseling across groups. Objective: To determine whether practicing TRE by eating early in the day (eTRE) is more effective for weight loss, fat loss, and cardiometabolic health than eating over a period of 12 or more hours. Design, Setting, and Participants: The study was a 14-week, parallel-arm, randomized clinical trial conducted between August …

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Association Of Cognition With Leptin And Vascular Endothelial Growth Factor In Individuals With Type 2 Diabetes Mellitus, Mark A. Espeland, Joni K. Evans, Owen Carmichael, Jose A. Luchsinger, Santica M. Marcovina, Rebecca Neiberg, Karen C. Johnson, Steven E. Kahn, Kathleen M. Hayden Sep 2022

Association Of Cognition With Leptin And Vascular Endothelial Growth Factor In Individuals With Type 2 Diabetes Mellitus, Mark A. Espeland, Joni K. Evans, Owen Carmichael, Jose A. Luchsinger, Santica M. Marcovina, Rebecca Neiberg, Karen C. Johnson, Steven E. Kahn, Kathleen M. Hayden

Clinical Research Faculty Publications

Objective: The 10-year intensive lifestyle intervention (ILI) of the Look AHEAD study left a legacy of relative deficits in cognitive function among participants who entered the clinical trial with obesity or a history of cardiovascular disease. We hypothesized that altered levels of two weight-sensitive proangiogenic cytokines, leptin and vascular endothelial growth factor (VEGF), accounted for this concerning finding. Methods: Serum leptin and VEGF concentrations were determined in 1,279 Look AHEAD participants at baseline, proximal to cessation of the interventions (Epoch 1), and an average of 4 years later (Epoch 2). Up to four standardized assessments of attention, executive function, and …

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Reference Staffing And Scheduling Models In Archives And Special Collections: A Survey Analysis Of Prepandemic Practices, Amanda K. Hawk Sep 2022

Reference Staffing And Scheduling Models In Archives And Special Collections: A Survey Analysis Of Prepandemic Practices, Amanda K. Hawk

Faculty Publications

Reference services form the core function of any type of library. Even when faced with shrinking budgets and staff sizes, library and archives workers continue to provide reference services to meet the demands of researchers. Yet a critical analysis of the internal systems used for archival and special collections reference work is lacking compared to the robust body of research about users of collection materials. This article presents findings from a national survey about reference staffing and scheduling models in archival and special collections repositories conducted immediately prior to the onset of the COVID-19 pandemic. The survey data revealed specific …

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Evaluation Of Models For Utilization In Genomic Prediction Of Agronomic Traits In The Louisiana Sugarcane Breeding Program, Subhrajit Satpathy, Dipendra Shahi, Brayden Blanchard, Michael Pontif, Kenneth Gravois, Collins Kimbeng, Anna Hale, James Todd, Atmakuri Rao, Niranjan Baisakh Sep 2022

Evaluation Of Models For Utilization In Genomic Prediction Of Agronomic Traits In The Louisiana Sugarcane Breeding Program, Subhrajit Satpathy, Dipendra Shahi, Brayden Blanchard, Michael Pontif, Kenneth Gravois, Collins Kimbeng, Anna Hale, James Todd, Atmakuri Rao, Niranjan Baisakh

Faculty Publications

Sugarcane (Saccharum spp.) is an important perennial grass crop for both sugar and biofuel industries. The Louisiana sugarcane breeding program is focused on improving sugar yield by incrementally increasing genetic gain. With the advancement in genotyping and (highthroughput) phenotyping techniques, genomic selection is a promising marker-assisted breeding tool. In this study, we assessed ridge regression best linear unbiased prediction (rrBLUP) and various Bayesian models to evaluate genomic prediction accuracy using a 10-fold cross validation on 95 commercial and elite parental clones from the Louisiana sugarcane breeding program. Datasets (individual and pooled in various combinations) were constructed based on soil type …

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A Detailed Analysis Of The Gl 486 Planetary System, J. A. Caballero, E. González-Álvarez, M. Brady, T. Trifonov, T. G. Ellis, C. Dorn, C. Cifuentes, K. Molaverdikhani, J. L. Bean, T. Boyajian, E. Rodríguez, J. Sanz-Forcada, M. R. Zapatero Osorio, C. Abia, P. J. Amado, N. Anugu, V. J.S. Béjar, C. L. Davies, S. Dreizler, F. Dubois, J. Ennis, N. Espinoza, C. D. Farrington, A. García López, T. Gardner, A. P. Hatzes, Th Henning, E. Herrero, E. Herrero-Cisneros, A. Kaminski, D. Kasper, R. Klement, S. Kraus Sep 2022

A Detailed Analysis Of The Gl 486 Planetary System, J. A. Caballero, E. González-Álvarez, M. Brady, T. Trifonov, T. G. Ellis, C. Dorn, C. Cifuentes, K. Molaverdikhani, J. L. Bean, T. Boyajian, E. Rodríguez, J. Sanz-Forcada, M. R. Zapatero Osorio, C. Abia, P. J. Amado, N. Anugu, V. J.S. Béjar, C. L. Davies, S. Dreizler, F. Dubois, J. Ennis, N. Espinoza, C. D. Farrington, A. García López, T. Gardner, A. P. Hatzes, Th Henning, E. Herrero, E. Herrero-Cisneros, A. Kaminski, D. Kasper, R. Klement, S. Kraus

Faculty Publications

Context. The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with a warm transiting rocky planet of about 1.3 RO and 3.0 MO. It is ideal for both transmission and emission spectroscopy and for testing interior models of telluric planets. Aims. To prepare for future studies, we aim to thoroughly characterise the planetary system with new accurate and precise data collected with state-of-the-art photometers from space and spectrometers and interferometers from the ground. Methods. We collected light curves of seven new transits observed with the CHEOPS space mission and …

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High-Dimensional Encryption In Optical Fibers Using Spatial Modes Of Light And Machine Learning, Michelle L.J. Lollie, Fatemeh Mostafavi, Narayan Bhusal, Mingyuan Hong, Chenglong You, Roberto De J. León-Montiel, Omar S. Magaña-Loaiza, Mario A. Quiroz-Juárez Sep 2022

High-Dimensional Encryption In Optical Fibers Using Spatial Modes Of Light And Machine Learning, Michelle L.J. Lollie, Fatemeh Mostafavi, Narayan Bhusal, Mingyuan Hong, Chenglong You, Roberto De J. León-Montiel, Omar S. Magaña-Loaiza, Mario A. Quiroz-Juárez

Faculty Publications

The ability to engineer the spatial wavefunction of photons has enabled a variety of quantum protocols for communication, sensing, and information processing. These protocols exploit the high dimensionality of structured light enabling the encoding of multiple bits of information in a single photon, the measurement of small physical parameters, and the achievement of unprecedented levels of security in schemes for cryptography. Unfortunately, the potential of structured light has been restrained to free-space platforms in which the spatial profile of photons is preserved. Here, we make an important step forward to using structured light for fiber optical communication. We introduce a …

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Visceral, Subcutaneous, And Total Fat Mass Accumulation In A Prospective Cohort Of Adolescents, Amanda E. Staiano, Peter T. Katzmarzyk Sep 2022

Visceral, Subcutaneous, And Total Fat Mass Accumulation In A Prospective Cohort Of Adolescents, Amanda E. Staiano, Peter T. Katzmarzyk

Population and Public Health Science Faculty Publications

Background: Race and sex differences in adolescents’ body fat are demonstrated in cross-sectional cohorts, yet a longitudinal design would better identify patterns of fat distribution over time. Objectives: The aim was to examine race and sex differences in adiposity between black and white adolescents over 2 y. Methods: A cohort of adolescents aged 10–16 y (38% black; 52% girls; 15% overweight, 34% with obesity) underwent body composition measurements at baseline (n = 309) and 2 y later (n = 236), using DXA to quantify whole-body fat mass (FM) and MRI for abdominal subcutaneous (SAT) and visceral adipose tissue (VAT) volumes. …

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Estimating R0 From Early Exponential Growth: Parallels Between 1918 Influenza And 2020 Sars-Cov-2 Pandemics, Grant Foster, Bret D. Elderd, Robert L. Richards, Tad Dallas Sep 2022

Estimating R0 From Early Exponential Growth: Parallels Between 1918 Influenza And 2020 Sars-Cov-2 Pandemics, Grant Foster, Bret D. Elderd, Robert L. Richards, Tad Dallas

Faculty Publications

The large spatial scale, geographical overlap, and similarities in transmission mode between the 1918 H1N1 influenza and 2020 SARS-CoV-2 pandemics together provide a novel opportunity to investigate relationships between transmission of two different diseases in the same location. To this end, we use initial exponential growth rates in a Bayesian hierarchical framework to estimate the basic reproductive number, R0, of both disease outbreaks in a common set of 43 cities in the United States. By leveraging multiple epidemic time series across a large spatial area, we are able to better characterize the variation in R0 across the United States. Additionally, …

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The Martian Boulder Automatic Recognition System, Mbars, Don R. Hood, S. F. Sholes, S. Karunatillake, C. I. Fassett, R. C. Ewing, J. Levy Sep 2022

The Martian Boulder Automatic Recognition System, Mbars, Don R. Hood, S. F. Sholes, S. Karunatillake, C. I. Fassett, R. C. Ewing, J. Levy

Faculty Publications

Boulder-sized clasts are common on the surface of Mars, and many are sufficiently large to be resolved by the high resolution imaging science experiment (HiRISE) camera aboard the Mars reconnaissance orbiter. The size, number, and location of boulders on the surface and their spatial distribution can reveal the processes that have operated on the surface, including boulder erosion, burial, impact excavation, and other mechanisms of boulder transport and generation. However, quantitative analysis of statistically significant boulder populations, which could inform these processes, entails prohibitively laborious manual segmentation, granulometry, and morphometry measurements over large areas. Here, we develop, describe, and validate …

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Rates Of Future Climate Change In The Gulf Of Mexico And The Caribbean Sea: Implications For Coral Reef Ecosystems, A. E. Lawman, S. G. Dee, K. L. Delong, A. M.S. Correa Sep 2022

Rates Of Future Climate Change In The Gulf Of Mexico And The Caribbean Sea: Implications For Coral Reef Ecosystems, A. E. Lawman, S. G. Dee, K. L. Delong, A. M.S. Correa

Faculty Publications

Rising temperatures and ocean acidification due to anthropogenic climate change pose ominous threats to coral reef ecosystems in the Gulf of Mexico (GoM) and the western Caribbean Sea. Unfortunately, the once structurally complex coral reefs in the GoM and Caribbean have dramatically declined since the 1970s; relatively few coral reefs still exhibit a mean live coral cover of >10%. Additional work is needed to characterize future climate stressors on coral reefs in the GoM and the Caribbean Sea. Here, we use climate model simulations spanning the period of 2015–2100 to partition and assess the individual impacts of climate stressors on …

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Cenozoic Antarctic Peninsula Temperatures And Glacial Erosion Signals From A Multi-Proxy Biomarker Study, Emily J. Tibbett, Sophie Warny, Jessica E. Tierney, Julia S. Wellner, Sarah J. Feakins Sep 2022

Cenozoic Antarctic Peninsula Temperatures And Glacial Erosion Signals From A Multi-Proxy Biomarker Study, Emily J. Tibbett, Sophie Warny, Jessica E. Tierney, Julia S. Wellner, Sarah J. Feakins

Faculty Publications

Terrestrial climate records for Antarctica, beyond the age limit of ice cores, are restricted to the few unglaciated areas with exposed rock outcrops. Marine sediments on Antarctica's continental shelves contain records of past oceanic and terrestrial environments that can provide important insights into Antarctic climate evolution. The SHALDRIL II (Shallow Drilling on the Antarctic Continental Margin) expedition recovered sedimentary sequences from the eastern side of the Antarctic Peninsula of late Eocene, Oligocene, middle Miocene, and early Pliocene age that provides insights into Cenozoic Antarctic climate and ice sheet development. Here, we use biomarker data to assess atmospheric and oceanic temperatures …

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Examining Drivers’ Behaviors To Connected And Automated Vehicles, Hany Hassan, Taniya Sultana Sep 2022

Examining Drivers’ Behaviors To Connected And Automated Vehicles, Hany Hassan, Taniya Sultana

Publications

It is envisioned that Connected and Automated Vehicles (CAVs) are the future of transportation as they can assist in minimizing some inefficiencies with the current transport systems. However, it is not clear how drivers of conventional vehicles would interact with CAVs in a mixed traffic environment containing both CAVs and human driven vehicles (HDVs). Thus, this study aims to investigate drivers’ behaviors towards CAVs through driving simulation experiment and national survey study. Two on-ramp and two off-ramp driving simulation scenarios were designed where drivers were asked to merge with two-lane highway in presence of HDVs and CAVs truck platoon in …

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Gabra5 Plays A Sexually Dimorphic Role In Pomc Neuron Activity And Glucose Balance, Zhou Pei, Yang He, Jonathan C. Bean, Yongjie Yang, Hailan Liu, Meng Yu, Kaifan Yu, Ilirjana Hyseni, Xing Cai, Hesong Liu, Na Qu, Longlong Tu, Kristine M. Conde, Mengjie Wang, Yongxiang Li, Na Yin, Nan Zhang, Junying Han, Camille H.S. Potts, Nikolas A. Scarcelli, Zili Yan, Pingwen Xu, Qi Wu, Yanlin He, Yong Xu, Chunmei Wang Aug 2022

Gabra5 Plays A Sexually Dimorphic Role In Pomc Neuron Activity And Glucose Balance, Zhou Pei, Yang He, Jonathan C. Bean, Yongjie Yang, Hailan Liu, Meng Yu, Kaifan Yu, Ilirjana Hyseni, Xing Cai, Hesong Liu, Na Qu, Longlong Tu, Kristine M. Conde, Mengjie Wang, Yongxiang Li, Na Yin, Nan Zhang, Junying Han, Camille H.S. Potts, Nikolas A. Scarcelli, Zili Yan, Pingwen Xu, Qi Wu, Yanlin He, Yong Xu, Chunmei Wang

Division of Basic Science Faculty Publications

Pro-opiomelanocortin (POMC) neurons are important for the regulation of body weight and glucose balance. The inhibitory tone to POMC neurons is mediated primarily by the GABA receptors. However, the detailed mechanisms and functions of GABA receptors are not well understood. The α5 subunit of GABAA receptor, Gabra5, is reported to regulate feeding, and we found that Gabra5 is highly expressed in POMC neurons. To explore the function of Gabra5 in POMC neurons, we knocked down Gabra5 specifically from mature hypothalamic POMC neurons using the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 strategy. This POMC-specific knock-down of Gabra5 did not affect …

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Long-Term Changes In Avian Biomass And Functional Diversity Within Disturbed And Undisturbed Amazonian Rainforest, David A. Luther, W. Justin Cooper, Vitek Jirinec, Jared D. Wolfe, Cameron L. Rutt, Richard O. Bierregaard, Thomas E. Lovejoy, Philip C. Stouffer Aug 2022

Long-Term Changes In Avian Biomass And Functional Diversity Within Disturbed And Undisturbed Amazonian Rainforest, David A. Luther, W. Justin Cooper, Vitek Jirinec, Jared D. Wolfe, Cameron L. Rutt, Richard O. Bierregaard, Thomas E. Lovejoy, Philip C. Stouffer

Faculty Publications

Recent long-term studies in protected areas have revealed the loss of biodiversity, yet the ramifications for ecosystem health and resilience remain unknown. Here, we investigate how the loss of understory birds, in the lowest stratum of the forest, affects avian biomass and functional diversity in the Amazon rainforest. Across approximately 30 years in the Biological Dynamics of Forest Fragments Project, we used a historical baseline of avian communities to contrast the avian communities in today's primary forest with those in modern disturbed habitat. We found that in primary rainforest, the reduced abundance of insectivorous species led to reduced functional diversity, …

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The Effects Of Covid 19-Related Social Media Hate Crime On Asian And Asian Americans' Self-Esteem, Saachi Chugh Aug 2022

The Effects Of Covid 19-Related Social Media Hate Crime On Asian And Asian Americans' Self-Esteem, Saachi Chugh

LSU Master's Theses

The COVID-19 pandemic has changed the way people communicate, live, socialize and perhaps the way they feel about the Asian population. The United States has seen a rise in the Asian hate crimes on online and offline platforms since the beginning of the pandemic which has affected the overall well-being of the Asian population. To our knowledge, the present study is one of the first studies to address the effects of COVID 19-related online perceived racial discrimination on the self-esteem of Asians. Additional objectives were to reveal the different coping mechanisms being used by the Asian population to cope with …

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