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Land Use And Hydrological Factors Control Concentrations And Diffusive Fluxes Of Riverine Dissolved Carbon Dioxide And Methane In Low-Order Streams, Wei Tang, Y. Jun Xu, Maofei Ni, Siyue Li Mar 2023

Land Use And Hydrological Factors Control Concentrations And Diffusive Fluxes Of Riverine Dissolved Carbon Dioxide And Methane In Low-Order Streams, Wei Tang, Y. Jun Xu, Maofei Ni, Siyue Li

Faculty Publications

We analyzed the impacts of land use/land cover types on carbon dioxide (CO2) and methane (CH4) concentration and diffusion in 1st to 4th Strahler order tributaries of the Longchuan River to the upper Yangtze River in China by using headspace equilibration method and CO2SYS program. Field sampling and measurements were conducted during the dry and wet seasons from 2017 to 2019. The average of calculated CO2 partial pressure (pCO2, mean ± SD: 2389 ± 3220 μatm) by CO2SYS program was 1.9-fold higher than the value (mean ± SD: 1230 ± 1440 μatm) 10 years ago in the Longchuan River basin, …

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Influence Of River Disconnection On Floodplain Periphyton Assemblages, Kamela De Gallardo, Michael D. Kaller, D. Allen Rutherford, William E. Kelso Mar 2023

Influence Of River Disconnection On Floodplain Periphyton Assemblages, Kamela De Gallardo, Michael D. Kaller, D. Allen Rutherford, William E. Kelso

Faculty Publications

The Atchafalaya River Basin (ARB) in southcentral Louisiana, USA, is a structurally and biotically diverse floodplain of Atchafalaya River (AR), which is the largest distributary of the Mississippi River. Annual floodplain inundation facilitates the exchange of nutrients and organic material between the AR and its floodplain, giving rise to the high productivity of the river-floodplain system. Production within the ARB is driven by periphytic algae, phytoplankton, and aquatic macrophytes, however, very little is known about periphytic algal assemblages in floodplain systems or how loss of annual flooding impacts these assemblages. In this study, we use artificial substrates to sample periphytic …

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Initial Assessment Of The Toxicologic Effects Of Leachates From 3-Dimensional (3-D) Printed Objects On Sperm Quality In Two Model Fish Species, Matthew J. Schwing, Yue Liu, Jorge A. Belgodere, William T. Monroe, Terrence R. Tiersch, Ahmed Abdelmoneim Mar 2023

Initial Assessment Of The Toxicologic Effects Of Leachates From 3-Dimensional (3-D) Printed Objects On Sperm Quality In Two Model Fish Species, Matthew J. Schwing, Yue Liu, Jorge A. Belgodere, William T. Monroe, Terrence R. Tiersch, Ahmed Abdelmoneim

Faculty Publications

The use of 3-dimensional (3-D) printing is gaining popularity in life sciences and driving innovation in fields including aquatic sperm cryopreservation. Yet, little is known about the effects leachates from these objects may have on biological systems. In this study, we investigated if exposure to leachates from 3-D printed objects fabricated from different photo-curable resins could affect sperm quality in two model fish species, zebrafish (Danio rerio) and goldfish (Carassius auratus). Leachates were collected following contact periods of 10 min and 22 h with objects manufactured using a mask LCD resin printer and three different commercially available resins (i.e., standard, …

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A Comprehensive Systematic Review Of Procedures And Analyses Used In Basic And Preclinical Studies Of Resurgence, 1970–2020, Christopher A. Podlesnik, Carolyn M. Ritchey, Jo Waits, Shawn P. Gilroy Mar 2023

A Comprehensive Systematic Review Of Procedures And Analyses Used In Basic And Preclinical Studies Of Resurgence, 1970–2020, Christopher A. Podlesnik, Carolyn M. Ritchey, Jo Waits, Shawn P. Gilroy

Faculty Publications

Resurgence is the return of a previously reinforced response as conditions worsen for an alternative response, such as the introduction of extinction, reductions in reinforcement, or punishment. As a procedure, resurgence has been used to model behavioral treatments and understand behavioral processes contributing both to relapse of problem behavior and flexibility during problem-solving. Identifying existing procedural and analytic methods arranged in basic/preclinical research could be used by basic and preclinical researchers to develop novel approaches to study resurgence, whereas translational and clinical researchers could identify potential approaches to combating relapse during behavioral interventions. Despite the study of resurgence for over …

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Using Automated Speech Processing For Repeated Measurements In A Clinical Setting Of The Behavioral Variability In The Stroop Task, Terje B. Holmlund, Alex S. Cohen, Jian Cheng, Peter W. Foltz, Jared Bernstein, Elizabeth Rosenfeld, Bruno Laeng, Brita Elvevåg Mar 2023

Using Automated Speech Processing For Repeated Measurements In A Clinical Setting Of The Behavioral Variability In The Stroop Task, Terje B. Holmlund, Alex S. Cohen, Jian Cheng, Peter W. Foltz, Jared Bernstein, Elizabeth Rosenfeld, Bruno Laeng, Brita Elvevåg

Faculty Publications

The Stroop interference task is indispensable to current neuropsychological practice. Despite this, it is limited in its potential for repeated administration, its sensitivity and its demands on professionals and their clients. We evaluated a digital Stroop deployed using a smart device. Spoken responses were timed using automated speech recognition. Participants included adult nonpatients (N = 113; k = 5 sessions over 5 days) and patients with psychiatric diagnoses (N = 85; k = 3–4 sessions per week over 4 weeks). Traditional interference (difference in response time between color incongruent words vs. color neutral words; M = 0.121 s) and facilitation …

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Short-Term Variation In Leaf-Level Water Use Efficiency In A Tropical Forest, Kenneth J. Davidson, Julien Lamour, Alistair Rogers, Kim S. Ely, Qianyu Li, Nate G. Mcdowell, Alexandria L. Pivovaroff, Brett T. Wolfe, S. Joseph Wright, Alfonso Zambrano, Shawn P. Serbin Mar 2023

Short-Term Variation In Leaf-Level Water Use Efficiency In A Tropical Forest, Kenneth J. Davidson, Julien Lamour, Alistair Rogers, Kim S. Ely, Qianyu Li, Nate G. Mcdowell, Alexandria L. Pivovaroff, Brett T. Wolfe, S. Joseph Wright, Alfonso Zambrano, Shawn P. Serbin

Faculty Publications

The representation of stomatal regulation of transpiration and CO2 assimilation is key to forecasting terrestrial ecosystem responses to global change. Given its importance in determining the relationship between forest productivity and climate, accurate and mechanistic model representation of the relationship between stomatal conductance (gs) and assimilation is crucial. We assess possible physiological and mechanistic controls on the estimation of the g1 (stomatal slope, inversely proportional to water use efficiency) and g0 (stomatal intercept) parameters, using diurnal gas exchange surveys and leaf-level response curves of six tropical broadleaf evergreen tree species. g1 estimated from ex situ response curves averaged 50% less …

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Leaves As Bottlenecks: The Contribution Of Tree Leaves To Hydraulic Resistance Within The Soil−Plant−Atmosphere Continuum, Brett T. Wolfe, Matteo Detto, Yong Jiang Zhang, Kristina J. Anderson-Teixeira, Tim Brodribb, Adam D. Collins, Chloe Crawford, L. Turin Dickman, Kim S. Ely, Jessica Francisco, Preston D. Gurry, Haigan Hancock, Christopher T. King, Adelodun R. Majekobaje, Christian J. Mallett, Nate G. Mcdowell, Zachary Mendheim, Sean T. Michaletz, Daniel B. Myers, Ty J. Price, Alistair Rogers, Lawren Sack, Shawn P. Serbin, Zafar Siddiq, David Willis, Jin Wu, Joseph Zailaa, S. Joseph Wright Mar 2023

Leaves As Bottlenecks: The Contribution Of Tree Leaves To Hydraulic Resistance Within The Soil−Plant−Atmosphere Continuum, Brett T. Wolfe, Matteo Detto, Yong Jiang Zhang, Kristina J. Anderson-Teixeira, Tim Brodribb, Adam D. Collins, Chloe Crawford, L. Turin Dickman, Kim S. Ely, Jessica Francisco, Preston D. Gurry, Haigan Hancock, Christopher T. King, Adelodun R. Majekobaje, Christian J. Mallett, Nate G. Mcdowell, Zachary Mendheim, Sean T. Michaletz, Daniel B. Myers, Ty J. Price, Alistair Rogers, Lawren Sack, Shawn P. Serbin, Zafar Siddiq, David Willis, Jin Wu, Joseph Zailaa, S. Joseph Wright

Faculty Publications

Within vascular plants, the partitioning of hydraulic resistance along the soil-to-leaf continuum affects transpiration and its response to environmental conditions. In trees, the fractional contribution of leaf hydraulic resistance (Rleaf) to total soil-to-leaf hydraulic resistance (Rtotal), or fRleaf (=Rleaf/Rtotal), is thought to be large, but this has not been tested comprehensively. We compiled a multibiome data set of fRleaf using new and previously published measurements of pressure differences within trees in situ. Across 80 samples, fRleaf averaged 0.51 (95% confidence interval [CI] = 0.46−0.57) and it declined with tree height. We also used the allometric relationship between field-based measurements of …

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Physical Activity And Weight Loss In A Pragmatic Weight Loss Trial, Peter T. Katzmarzyk, Emily F. Mire, Corby K. Martin, Robert L. Newton, John W. Apolzan, Kara D. Denstel, William D. Johnson, Phillip Brantley, Ronald Horswell, Benjamin F. Springgate, Terry C. Davis, Connie L. Arnold, Eboni Price-Haywood, Carl J. Lavie, Vivian A. Fonseca, Tina K. Thethi, Jonathan Gugel, Kathleen B. Kennedy, Daniel F. Sarpong Mar 2023

Physical Activity And Weight Loss In A Pragmatic Weight Loss Trial, Peter T. Katzmarzyk, Emily F. Mire, Corby K. Martin, Robert L. Newton, John W. Apolzan, Kara D. Denstel, William D. Johnson, Phillip Brantley, Ronald Horswell, Benjamin F. Springgate, Terry C. Davis, Connie L. Arnold, Eboni Price-Haywood, Carl J. Lavie, Vivian A. Fonseca, Tina K. Thethi, Jonathan Gugel, Kathleen B. Kennedy, Daniel F. Sarpong

Clinical Research Faculty Publications

The purpose of this study was to determine the association between changes in physical activity and changes in body weight in a cluster-randomized weight loss trial conducted in an underserved population in Louisiana. This study reports analyses conducted in the intervention group only, which was a 24-month multi-component weight loss program delivered by health coaches embedded in primary care clinics. Physical activity was assessed at baseline and at 6, 12, and 24 months of follow-up and changes in body weight were expressed as percent weight change from baseline. Among the sample of 402 patients, percent changes in body weight (mean …

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Electronic Cigarette Nicotine Flux, Nicotine Yield, And Particulate Matter Emissions: Impact Of Device And Liquid Heterogeneity, Eric K. Soule, Shannon Mayne, William Snipes, Elizabeth K. Do, Travis Theall, Christoph Höchsmann, Soha Talih, Corby K. Martin, Thomas Eissenberg, Bernard F. Fuemmeler Mar 2023

Electronic Cigarette Nicotine Flux, Nicotine Yield, And Particulate Matter Emissions: Impact Of Device And Liquid Heterogeneity, Eric K. Soule, Shannon Mayne, William Snipes, Elizabeth K. Do, Travis Theall, Christoph Höchsmann, Soha Talih, Corby K. Martin, Thomas Eissenberg, Bernard F. Fuemmeler

Clinical Research Faculty Publications

Introduction: Electronic cigarettes (ECIGs) heat a nicotine-containing liquid to produce an inhalable aerosol. ECIG power (wattage) and liquid nicotine concentration are two factors that predict nicotine emission rate ("flux"). These factors can vary greatly across devices and users. Aims and Methods: The purpose of this study was to examine ECIG device and liquid heterogeneity in "real world"settings and the association with predicted nicotine flux, nicotine yield, and total particulate matter (TPM) emissions. Past 30-day ECIG users (n = 84; mean age = 23.8 years [SD = 9.6]) reported device and liquid characteristics. Device power was measured via multimeter, device display …

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Bioelectrical Impedance Phase Angle Is Associated With Physical Performance Before But Not After Simulated Multi-Stressor Military Operations, Alyssa N. Varanoske, Melissa N. Harris, Callie Hebert, Neil M. Johannsen, Steven B. Heymsfield, Frank L. Greenway, Arny A. Ferrando, Jennifer C. Rood, Stefan M. Pasiakos Mar 2023

Bioelectrical Impedance Phase Angle Is Associated With Physical Performance Before But Not After Simulated Multi-Stressor Military Operations, Alyssa N. Varanoske, Melissa N. Harris, Callie Hebert, Neil M. Johannsen, Steven B. Heymsfield, Frank L. Greenway, Arny A. Ferrando, Jennifer C. Rood, Stefan M. Pasiakos

Clinical Research Faculty Publications

Physical performance decrements observed during multi-stressor military operations may be attributed, in part, to cellular membrane dysfunction, which is quantifiable using phase angle (PhA) derived from bioelectrical impedance analysis (BIA). Positive relationships between PhA and performance have been previously reported in cross-sectional studies and following longitudinal exercise training programs, but whether changes in PhA are indicative of acute decrements in performance during military operations is unknown. Data from the Optimizing Performance for Soldiers II study, a clinical trial examining the effects of exogenous testosterone administration on body composition and performance during military stress, was used to evaluate changes in PhA …

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Sibling Resemblance In Physical Activity Levels: The Peruvian Sibling Study On Growth And Health, Carla Santos, José Maia, Sara Pereira, Olga Vasconcelos, Rui Garganta, J. Timothy Lightfoot, Go Tani, Donald Hedeker, Peter T. Katzmarzyk, Alcibíades Bustamante Mar 2023

Sibling Resemblance In Physical Activity Levels: The Peruvian Sibling Study On Growth And Health, Carla Santos, José Maia, Sara Pereira, Olga Vasconcelos, Rui Garganta, J. Timothy Lightfoot, Go Tani, Donald Hedeker, Peter T. Katzmarzyk, Alcibíades Bustamante

Population and Public Health Science Faculty Publications

Physical activity is associated with a host of positive health outcomes and is shaped by both genetic and environmental factors. We aim to: (1) estimate sibling resemblance in two physical activity phenotypes [total number of steps∙day−1 and minutes for moderate steps per day (min∙day−1)]; and (2) investigate the joint associations of individual characteristics and shared natural environment with intra-pair sibling similarities in each phenotype. We sampled 247 biological siblings from 110 nuclear families, aged 6–17 years, from three Peruvian regions. Physical activity was measured using pedometers and body mass index was calculated. In general, non-significant variations in …

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Exercise Modifies Hypothalamic Connectivity And Brain Functional Networks In Women After Bariatric Surgery: A Randomized Clinical Trial, Carlos A.A. Merege-Filho, Saulo S. Gil, John P. Kirwan, Igor H. Murai, Wagner S. Dantas, Mariana P. Nucci, Bruno Pastorello, Alisson Padilha De Lima, Paulo R. Bazán, Rosa M.R. Pereira, Ana L. De Sá-Pinto, Fernanda R. Lima, Sonia M.D. Brucki, Roberto De Cleva, Marco A. Santo, Claudia Da Costa Leite, Maria Concepción García Otaduy, Hamilton Roschel, Bruno Gualano Mar 2023

Exercise Modifies Hypothalamic Connectivity And Brain Functional Networks In Women After Bariatric Surgery: A Randomized Clinical Trial, Carlos A.A. Merege-Filho, Saulo S. Gil, John P. Kirwan, Igor H. Murai, Wagner S. Dantas, Mariana P. Nucci, Bruno Pastorello, Alisson Padilha De Lima, Paulo R. Bazán, Rosa M.R. Pereira, Ana L. De Sá-Pinto, Fernanda R. Lima, Sonia M.D. Brucki, Roberto De Cleva, Marco A. Santo, Claudia Da Costa Leite, Maria Concepción García Otaduy, Hamilton Roschel, Bruno Gualano

Division of Basic Science Faculty Publications

Background: Obesity is a disease that may involve disrupted connectivity of brain networks. Bariatric surgery is an effective treatment for obesity, and the positive effects on obesity-related conditions may be enhanced by exercise. Herein, we aimed to investigate the possible synergistic effects of Roux-en-Y Gastric Bypass (RYGB) and exercise training on brain functional networks. Methods: Thirty women eligible for bariatric surgery were randomly assigned to a Roux-en-Y gastric bypass (RYGB: n = 15, age = 41.0 ± 7.3 years) or RYGB plus Exercise Training (RYGB + ET: n = 15, age = 41.9 ± 7.2 years). Clinical, laboratory, and brain …

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Associations Of Covid-19 Hospitalizations, Icu Admissions, And Mortality With Black And White Race And Their Mediation By Air Pollution And Other Risk Factors In The Louisiana Industrial Corridor, March 2020–August 2021, Qingzhao Yu, Wentao Cao, Diana Hamer, Norman Urbanek, Susanne Straif-Bourgeois, Stephania A. Cormier, Tekeda Ferguson, Jennifer Richmond-Bryant Mar 2023

Associations Of Covid-19 Hospitalizations, Icu Admissions, And Mortality With Black And White Race And Their Mediation By Air Pollution And Other Risk Factors In The Louisiana Industrial Corridor, March 2020–August 2021, Qingzhao Yu, Wentao Cao, Diana Hamer, Norman Urbanek, Susanne Straif-Bourgeois, Stephania A. Cormier, Tekeda Ferguson, Jennifer Richmond-Bryant

Division of Basic Science Faculty Publications

Louisiana ranks among the bottom five states for air pollution and mortality. Our objective was to investigate associations between race and Coronavirus Disease 2019 (COVID-19) hospitalizations, intensive care unit (ICU) admissions, and mortality over time and determine which air pollutants and other characteristics may mediate COVID-19-associated outcomes. In our cross-sectional study, we analyzed hospitalizations, ICU admissions, and mortality among positive SARS-CoV-2 cases within a healthcare system around the Louisiana Industrial Corridor over four waves of the pandemic from 1 March 2020 to 31 August 2021. Associations between race and each outcome were tested, and multiple mediation analysis was performed to …

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Factors Influencing Consumers’ Willingness-To-Try Seafood Byproducts, Silvia Murillo, Ryan Ardoin, Witoon Prinyawiwatkul Mar 2023

Factors Influencing Consumers’ Willingness-To-Try Seafood Byproducts, Silvia Murillo, Ryan Ardoin, Witoon Prinyawiwatkul

Faculty Publications

With increasing global demand for seafood, seafood byproducts (SB) utilization can contribute to a more sustainable food supply chain through waste-to-value food product development. However, consumer perceptions of SB (e.g., fish skin and bones) are underexplored. Therefore, this study aims to evaluate some factors influencing consumers’ willingness-to-try seafood byproducts. An online survey was conducted in the USA regarding intervention of SB informational cues with N = 904 adult seafood consumers internationally. The proportion of consumers willing to try SB increased significantly (McNemar’s test, α = 0.05) from 47% to 68% after SB safety and health claims had been presented in …

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Can Biodiversity Of Preexisting And Created Salt Marshes Match Across Scales? An Assessment From Microbes To Predators, Friedrich W. Keppeler, James R. Junker, Margaret J. Shaw, Scott B. Alford, Annette S. Engel, Linda M. Hooper-Bùi, Olaf P. Jensen, Katelyn Lamb, Paola C. López-Duarte, Charles W. Martin, Ashley M. Mcdonald, Jill A. Olin, Audrey T. Paterson, Michael J. Polito, Nancy N. Rabalais, Brian J. Roberts, Ryann E. Rossi, Erick M. Swenson Mar 2023

Can Biodiversity Of Preexisting And Created Salt Marshes Match Across Scales? An Assessment From Microbes To Predators, Friedrich W. Keppeler, James R. Junker, Margaret J. Shaw, Scott B. Alford, Annette S. Engel, Linda M. Hooper-Bùi, Olaf P. Jensen, Katelyn Lamb, Paola C. López-Duarte, Charles W. Martin, Ashley M. Mcdonald, Jill A. Olin, Audrey T. Paterson, Michael J. Polito, Nancy N. Rabalais, Brian J. Roberts, Ryann E. Rossi, Erick M. Swenson

Faculty Publications

Coastal wetlands are rapidly disappearing worldwide due to a variety of processes, including climate change and flood control. The rate of loss in the Mississippi River Delta is among the highest in the world and billions of dollars have been allocated to build and restore coastal wetlands. A key question guiding assessment is whether created coastal salt marshes have similar biodiversity to preexisting, reference marshes. However, the numerous biodiversity metrics used to make these determinations are typically scale dependent and often conflicting. Here, we applied ecological theory to compare the diversity of different assemblages (surface and below-surface soil microbes, plants, …

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A Fracture Multiscale Model For Peridynamic Enrichment Within The Partition Of Unity Method, Matthias Birner, Patrick Diehl, Robert Lipton, Marc Alexander Schweitzer Mar 2023

A Fracture Multiscale Model For Peridynamic Enrichment Within The Partition Of Unity Method, Matthias Birner, Patrick Diehl, Robert Lipton, Marc Alexander Schweitzer

Faculty Publications

Partition of unity methods are of domain decomposition type and provide the opportunity for multiscale and multiphysics numerical modeling. Different physical models can exist within a partition of unity method scheme for handling problems with zones of linear elasticity and zones where fractures occur. Here, the peridynamic model is used in regions of fracture and smooth partition of unity methods is used in the surrounding linear elastic media. Our method is novel in that we evolve the crack path using peridynamics and apply the partition of unity method to compute the elastic fields in the neighborhood of the crack tip. …

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Complete Β -Decay Patterns Of Cs 142, Ba 142, And La 142 Determined Using Total Absorption Spectroscopy, M. Wolińska-Cichocka, B. C. Rasco, K. P. Rykaczewski, N. T. Brewer, A. Fijałkowska, M. Karny, R. K. Grzywacz, K. C. Goetz, C. J. Gross, D. W. Stracener, E. F. Zganjar, J. C. Batchelder, J. C. Blackmon, S. Go, B. Heffron, J. Johnson, T. T. King, J. T. Matta, K. Miernik, M. Madurga, E. A. Mccutchan, D. Miller, C. D. Nesaraja, S. V. Paulauskas, M. M. Rajabali, S. Taylor, A. A. Sonzogni, E. H. Wang, J. A. Winger, Y. Xiao, C. J. Zachary Mar 2023

Complete Β -Decay Patterns Of Cs 142, Ba 142, And La 142 Determined Using Total Absorption Spectroscopy, M. Wolińska-Cichocka, B. C. Rasco, K. P. Rykaczewski, N. T. Brewer, A. Fijałkowska, M. Karny, R. K. Grzywacz, K. C. Goetz, C. J. Gross, D. W. Stracener, E. F. Zganjar, J. C. Batchelder, J. C. Blackmon, S. Go, B. Heffron, J. Johnson, T. T. King, J. T. Matta, K. Miernik, M. Madurga, E. A. Mccutchan, D. Miller, C. D. Nesaraja, S. V. Paulauskas, M. M. Rajabali, S. Taylor, A. A. Sonzogni, E. H. Wang, J. A. Winger, Y. Xiao, C. J. Zachary

Faculty Publications

Background: The β decays of fission products produced in nuclear fuel are important for nuclear energy applications and fundamental science of reactor antineutrinos. In particular, nuclear reactor safety is related to the decay modes of radioactive neutron-rich nuclei, primarily via the emission of γ rays, neutrons, and electrons. Additionally nuclear reactors are the most powerful man-made source of antineutrinos emitted during the β decay of fission products. These antineutrinos are used to inspect fundamental properties of leptons as well as informing reactor operation. However, the majority of data on complex decays of fission products collected in the evaluated nuclear data …

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The Ixpe View Of Grb 221009a, Michela Negro, Niccolò Di Lalla, Nicola Omodei, Péter Veres, Stefano Silvestri, Alberto Manfreda, Eric Burns, Luca Baldini, Enrico Costa, Steven R. Ehlert, Jamie A. Kennea, Ioannis Liodakis, Herman L. Marshall, Sandro Mereghetti, Riccardo Middei, Fabio Muleri, Stephen L. O’Dell, Oliver J. Roberts, Roger W. Romani, Carmelo Sgró, Masanobu Terashima, Andrea Tiengo, Domenico Viscolo, Alessandro Di Marco, Fabio La Monaca, Luca Latronico, Giorgio Matt, Matteo Perri, Simonetta Puccetti, Juri Poutanen, Ajay Ratheesh, Daniele Rogantini, Patrick Slane Mar 2023

The Ixpe View Of Grb 221009a, Michela Negro, Niccolò Di Lalla, Nicola Omodei, Péter Veres, Stefano Silvestri, Alberto Manfreda, Eric Burns, Luca Baldini, Enrico Costa, Steven R. Ehlert, Jamie A. Kennea, Ioannis Liodakis, Herman L. Marshall, Sandro Mereghetti, Riccardo Middei, Fabio Muleri, Stephen L. O’Dell, Oliver J. Roberts, Roger W. Romani, Carmelo Sgró, Masanobu Terashima, Andrea Tiengo, Domenico Viscolo, Alessandro Di Marco, Fabio La Monaca, Luca Latronico, Giorgio Matt, Matteo Perri, Simonetta Puccetti, Juri Poutanen, Ajay Ratheesh, Daniele Rogantini, Patrick Slane

Faculty Publications

We present the IXPE observation of GRB 221009A, which includes upper limits on the linear polarization degree of both prompt and afterglow emission in the soft X-ray energy band. GRB 221009A is an exceptionally bright gamma-ray burst (GRB) that reached Earth on 2022 October 9 after traveling through the dust of the Milky Way. The Imaging X-ray Polarimetry Explorer (IXPE) pointed at GRB 221009A on October 11 to observe, for the first time, the 2-8 keV X-ray polarization of a GRB afterglow. We set an upper limit to the polarization degree of the afterglow emission of 13.8% at a 99% …

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Grb 221009a: The Boat, Eric Burns, Dmitry Svinkin, Edward Fenimore, D. Alexander Kann, José Feliciano Agüí Fernández, Dmitry Frederiks, Rachel Hamburg, Stephen Lesage, Yuri Temiraev, Anastasia Tsvetkova, Elisabetta Bissaldi, Michael S. Briggs, Sarah Dalessi, Rachel Dunwoody, Cori Fletcher, Adam Goldstein, C. Michelle Hui, Boyan A. Hristov, Daniel Kocevski, Alexandra L. Lysenko, Bagrat Mailyan, Joseph Mangan, Sheila Mcbreen, Judith Racusin, Anna Ridnaia, Oliver J. Roberts, Mikhail Ulanov, Peter Veres, Colleen A. Wilson-Hodge, Joshua Wood Mar 2023

Grb 221009a: The Boat, Eric Burns, Dmitry Svinkin, Edward Fenimore, D. Alexander Kann, José Feliciano Agüí Fernández, Dmitry Frederiks, Rachel Hamburg, Stephen Lesage, Yuri Temiraev, Anastasia Tsvetkova, Elisabetta Bissaldi, Michael S. Briggs, Sarah Dalessi, Rachel Dunwoody, Cori Fletcher, Adam Goldstein, C. Michelle Hui, Boyan A. Hristov, Daniel Kocevski, Alexandra L. Lysenko, Bagrat Mailyan, Joseph Mangan, Sheila Mcbreen, Judith Racusin, Anna Ridnaia, Oliver J. Roberts, Mikhail Ulanov, Peter Veres, Colleen A. Wilson-Hodge, Joshua Wood

Faculty Publications

GRB 221009A has been referred to as the brightest of all time (BOAT). We investigate the veracity of this statement by comparing it with a half century of prompt gamma-ray burst observations. This burst is the brightest ever detected by the measures of peak flux and fluence. Unexpectedly, GRB 221009A has the highest isotropic-equivalent total energy ever identified, while the peak luminosity is at the ∼99th percentile of the known distribution. We explore how such a burst can be powered and discuss potential implications for ultralong and high-redshift gamma-ray bursts. By geometric extrapolation of the total fluence and peak flux …

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The First Jwst Spectrum Of A Grb Afterglow: No Bright Supernova In Observations Of The Brightest Grb Of All Time, Grb 221009a, A. J. Levan, G. P. Lamb, B. Schneider, J. Hjorth, T. Zafar, A. De Ugarte Postigo, B. Sargent, S. E. Mullally, L. Izzo, P. D’Avanzo, E. Burns, J. F.Agüí Fernández, T. Barclay, M. G. Bernardini, K. Bhirombhakdi, M. Bremer, R. Brivio, S. Campana, A. A. Chrimes, V. D’Elia, M. Della Valle, M. De Pasquale, M. Ferro, W. Fong, A. S. Fruchter, J. P.U. Fynbo, N. Gaspari, B. P. Gompertz, D. H. Hartmann, C. L. Hedges, K. E. Heintz, K. Hotokezaka, P. Jakobsson Mar 2023

The First Jwst Spectrum Of A Grb Afterglow: No Bright Supernova In Observations Of The Brightest Grb Of All Time, Grb 221009a, A. J. Levan, G. P. Lamb, B. Schneider, J. Hjorth, T. Zafar, A. De Ugarte Postigo, B. Sargent, S. E. Mullally, L. Izzo, P. D’Avanzo, E. Burns, J. F.Agüí Fernández, T. Barclay, M. G. Bernardini, K. Bhirombhakdi, M. Bremer, R. Brivio, S. Campana, A. A. Chrimes, V. D’Elia, M. Della Valle, M. De Pasquale, M. Ferro, W. Fong, A. S. Fruchter, J. P.U. Fynbo, N. Gaspari, B. P. Gompertz, D. H. Hartmann, C. L. Hedges, K. E. Heintz, K. Hotokezaka, P. Jakobsson

Faculty Publications

We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the afterglow of GRB 221009A, the brightest gamma-ray burst (GRB) ever observed. This includes the first mid-IR spectra of any GRB, obtained with JWST/Near Infrared Spectrograph (0.6-5.5 micron) and Mid-Infrared Instrument (5-12 micron), 12 days after the burst. Assuming that the intrinsic spectral slope is a single power law, with F ν ∝ ν −β , we obtain β ≈ 0.35, modified by substantial dust extinction with A V = 4.9. This suggests extinction above the notional Galactic value, possibly due to patchy extinction within the …

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Witnessing Entangled Two-Photon Absorption Via Quantum Interferometry, Áulide Martínez-Tapia, Samuel Corona-Aquino, Freiman Triana-Arango, Chenglong You, Rui Bo Jin, Omar S. Magaña-Loaiza, Shi Hai Dong, Alfred B. U'Ren, Roberto De J. León-Montiel Mar 2023

Witnessing Entangled Two-Photon Absorption Via Quantum Interferometry, Áulide Martínez-Tapia, Samuel Corona-Aquino, Freiman Triana-Arango, Chenglong You, Rui Bo Jin, Omar S. Magaña-Loaiza, Shi Hai Dong, Alfred B. U'Ren, Roberto De J. León-Montiel

Faculty Publications

Recent investigations have suggested that the use of non-classical states of light, such as entangled photon pairs, may open new and exciting avenues in experimental two-photon absorption spectroscopy. Despite several experimental studies of entangled two-photon absorption (eTPA), there is still a heated debate on whether eTPA has truly been observed. This interesting debate has arisen mainly because it has recently been argued that single-photon-loss mechanisms, such as scattering or hot-band absorption, may mimic the expected entangled-photon linear absorption behavior. In this work, we focus on transmission measurements of eTPA and explore three different two-photon quantum interferometers in the context of …

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Associations Between Moderate To Vigorous Physical Activity, Sedentary Behavior, And Depressive Symptomatology In Adolescents: A Prospective Observational Cohort Study, Chelsea L. Kracht, Sai S. Pochana, Amanda E. Staiano Mar 2023

Associations Between Moderate To Vigorous Physical Activity, Sedentary Behavior, And Depressive Symptomatology In Adolescents: A Prospective Observational Cohort Study, Chelsea L. Kracht, Sai S. Pochana, Amanda E. Staiano

Population and Public Health Science Faculty Publications

Background: More moderate to vigorous physical activity (MVPA) and less time in sedentary behavior (SB) may protect against poor mental health in adolescence. Depressive symptomatology may also influence adolescents’ own MVPA and SB. The aim of this study was to examine the bidirectional relationship between adolescent MVPA, SB, and depressive symptomatology using a longitudinal approach. Methods: Adolescents (10–16 y) were recruited for a prospective observational cohort. Depressive symptomatology was measured using the Short Mood and Feelings Questionnaire. Accelerometry was used to measure MVPA and SB. Adolescents were classified by meeting the MVPA guideline (≥60 min/d) and quartiles of SB time, …

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A Reference Genome For Bluegill (Centrarchidae: Lepomis Macrochirus), William B. Ludt, Eamon C. Corbett, Jerry Kattawar, Prosanta Chakrabarty, Brant C. Faircloth Mar 2023

A Reference Genome For Bluegill (Centrarchidae: Lepomis Macrochirus), William B. Ludt, Eamon C. Corbett, Jerry Kattawar, Prosanta Chakrabarty, Brant C. Faircloth

Faculty Publications

North American sunfishes (Family Centrarchidae) are among the most popular sportfish throughout the United States and Canada. Despite the popularity of sunfishes, their ecological importance, and their extensive stocking and aquacultural history, few molecular studies have examined the evolutionary relationships and species boundaries among members of this group, many of which are known to hybridize. Here, we describe a chromosome-scale genome assembly representing Bluegill (Lepomis macrochirus), one of the most widespread centrarchid species. By combining long-read, Oxford Nanopore sequencing data with short-insert, whole-genome and HiC sequence reads, we produced an assembly (Lm_LA_1.1) having a total length of 889 Mb including …

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Dna Assays For Genetic Discrimination Of Three Phragmites Australis Subspecies In The United States, Denise L. Lindsay, Xin Guan, Nathan E. Harms, James T. Cronin, Laura A. Meyerson, Richard F. Lance Mar 2023

Dna Assays For Genetic Discrimination Of Three Phragmites Australis Subspecies In The United States, Denise L. Lindsay, Xin Guan, Nathan E. Harms, James T. Cronin, Laura A. Meyerson, Richard F. Lance

Faculty Publications

Premise: To genetically discriminate subspecies of the common reed (Phragmites australis), we developed real-time quantitative (qPCR) assays for identifying P. australis subsp. americanus, P. australis subsp. australis, and P. australis subsp. berlandieri. Methods and Results: Utilizing study-generated chloroplast DNA sequences, we developed three novel qPCR assays. Assays were verified on individuals of each subspecies and against two non-target species, Arundo donax and Phalaris arundinacea. One assay amplifies only P. australis subsp. americanus, one amplifies P. australis subsp. australis and/or P. australis subsp. berlandieri, and one amplifies P. australis subsp. americanus and/or P. australis subsp. australis. This protocol enhances currently available …

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Unhealthy Herds And The Predator–Spreader: Understanding When Predation Increases Disease Incidence And Prevalence, Robert L. Richards, Bret D. Elderd, Meghan A. Duffy Mar 2023

Unhealthy Herds And The Predator–Spreader: Understanding When Predation Increases Disease Incidence And Prevalence, Robert L. Richards, Bret D. Elderd, Meghan A. Duffy

Faculty Publications

Disease ecologists now recognize the limitation behind examining host–parasite interactions in isolation: community members—especially predators—dramatically affect host–parasite dynamics. Although the initial paradigm was that predation should reduce disease in prey populations (“healthy herds hypothesis”), researchers have realized that predators sometimes increase disease in their prey. These “predator–spreaders” are now recognized as critical to disease dynamics, but empirical research on the topic remains fragmented. In a narrow sense, a “predator–spreader” would be defined as a predator that mechanically spreads parasites via feeding. However, predators affect their prey and, subsequently, disease transmission in many other ways such as altering prey population structure, …

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Pseudomonas Aeruginosa Dps (Pa0962) Functions In H2o2 Mediated Oxidative Stress Defense And Exhibits In Vitro Dna Cleaving Activity, Nimesha Rajapaksha, Anabel Soldano, Huili Yao, Fabrizio Donnarumma, Maithri M. Kashipathy, Steve Seibold, Kevin P. Battaile, Scott Lovell, Mario Rivera Mar 2023

Pseudomonas Aeruginosa Dps (Pa0962) Functions In H2o2 Mediated Oxidative Stress Defense And Exhibits In Vitro Dna Cleaving Activity, Nimesha Rajapaksha, Anabel Soldano, Huili Yao, Fabrizio Donnarumma, Maithri M. Kashipathy, Steve Seibold, Kevin P. Battaile, Scott Lovell, Mario Rivera

Faculty Publications

We report the structural, biochemical, and functional characterization of the product of gene PA0962 from Pseudomonas aeruginosa PAO1. The protein, termed Pa Dps, adopts the Dps subunit fold and oligomerizes into a nearly spherical 12-mer quaternary structure at pH 6.0 or in the presence of divalent cations at neutral pH and above. The 12-Mer Pa Dps contains two di-iron centers at the interface of each subunit dimer, coordinated by conserved His, Glu, and Asp residues. In vitro, the di-iron centers catalyze the oxidation of Fe2+ utilizing H2O2 (not O2) as an oxidant, suggesting Pa Dps functions to aid P. …

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Das-Pinns: A Deep Adaptive Sampling Method For Solving High-Dimensional Partial Differential Equations, Kejun Tang, Xiaoliang Wan, Chao Yang Mar 2023

Das-Pinns: A Deep Adaptive Sampling Method For Solving High-Dimensional Partial Differential Equations, Kejun Tang, Xiaoliang Wan, Chao Yang

Faculty Publications

In this work we propose a deep adaptive sampling (DAS-PINNs) method for solving partial differential equations (PDEs), where deep neural networks are utilized to approximate the solutions of PDEs and deep generative models are employed to generate new collocation points to refine the training set. The overall procedure of DAS consists of two components: solving the PDEs by minimizing the residual loss on the collocation points in the training set and generating a new training set to further improve the accuracy of the current approximate solution. In particular, we treat the residual as a probability density function and approximate it …

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Using The Exploration, Preparation, Implementation, And Sustainment (Epis) Framework To Advance The Science And Practice Of Healthy Food Retail, Bailey Houghtaling, Sarah Misyak, Elena Serrano, Rachael D. Dombrowski, Denise Holston, Chelsea R. Singleton, Samantha M. Harden Mar 2023

Using The Exploration, Preparation, Implementation, And Sustainment (Epis) Framework To Advance The Science And Practice Of Healthy Food Retail, Bailey Houghtaling, Sarah Misyak, Elena Serrano, Rachael D. Dombrowski, Denise Holston, Chelsea R. Singleton, Samantha M. Harden

Faculty Publications

Although healthy food retail strategies are widely used, there appears to be a limited understanding of the processes and determinants for successful adoption, implementation, and sustainment. To fill this gap, we recommend the Exploration, Preparation, Implementation, and Sustainment (EPIS) framework to be used to advance the science and practice of healthy food retail. In this perspective, we: (1) introduce EPIS and describe why it was chosen as a recommended implementation science framework for healthy food retail, (2) highlight healthy food retail evidence supporting EPIS, and (3) discuss research and practice needs moving forward.

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Trends In Obesity Prevalence And Cardiometabolic Risk Factor Control In Us Adults With Diabetes, 1999–2020, Gang Hu, Jonathan Ding, Donna H. Ryan Mar 2023

Trends In Obesity Prevalence And Cardiometabolic Risk Factor Control In Us Adults With Diabetes, 1999–2020, Gang Hu, Jonathan Ding, Donna H. Ryan

Population and Public Health Science Faculty Publications

Objective: Trends in obesity prevalence and trends in control of cardiometabolic risk factors among National Health and Nutrition Examination Survey participants with diabetes from 1999 through 2020 were analyzed. Methods: Adults who were 20 years or older and who reported having received a diagnosis of diabetes from a physician were included. Results: The prevalence of overall obesity, obesity class II, and obesity class III increased from 46.9%, 14.1%, and 10.3% in 1999 to 2002 to 58.1%, 16.6%, and 14.8% in 2015 to 2020, respectively. The prevalence of participants who achieved glycemic control (HbA1c < 7%) increased from 42.5% in 1999 to 2002 to 51.8% in 2007 to 2010, then decreased to 48.0% in 2015 to 2020. The prevalence of participants who achieved blood pressure control (< 140/90 mmHg) or achieved non-high-density lipoprotein cholesterol control (< 130 mg/dL) increased throughout the study periods. The prevalence of participants who met all three risk factor goals increased from 8.3% in 1999 to 2002 to 21.2% in 2011 to 2014 and then decreased to 18.5 in 2015 to 2020. Participants with obesity showed worsening glycemic control and lipid control than participants with normal weight. Conclusions: There were increasing trends in prevalence of obesity, blood pressure control, and lipid control from 1999 to 2002 to 2015 to 2020. Participants with obesity showed worsening glycemic control and lipid control than normal-weight participants.

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Maternal Insulin Resistance And Maternal Β-Cell Function During Pregnancy For Offspring Overweight Before 2 Years Of Age Among Women With Gestational Diabetes, Ming Gao, Hui Wang, Weiqin Li, Leishen Wang, Ninghua Li, Yijuan Qiao, Tao Zhang, Jing Li, Zhijie Yu, Gang Hu, Junhong Leng, Xilin Yang Mar 2023

Maternal Insulin Resistance And Maternal Β-Cell Function During Pregnancy For Offspring Overweight Before 2 Years Of Age Among Women With Gestational Diabetes, Ming Gao, Hui Wang, Weiqin Li, Leishen Wang, Ninghua Li, Yijuan Qiao, Tao Zhang, Jing Li, Zhijie Yu, Gang Hu, Junhong Leng, Xilin Yang

Population and Public Health Science Faculty Publications

Objective: To explore associations of maternal insulin resistance and β-cell dysfunction with offspring overweight before 24 months of age among children of Chinese women with gestational diabetes mellitus (GDM). Methods: Offspring of women with GDM (n = 901) who were enrolled in a lifestyle trial during pregnancy were followed up to 24 months of age in Tianjin, China. Restricted cubic spline analysis was performed to examine full-range associations of maternal homeostatic model assessment of insulin resistance (HOMA-IR) and β-cell function (HOMA-%β) with childhood overweight. Logistic regression was performed to obtain the odds ratios (ORs) and 95% confidence interval (CI) of …

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