Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Faculty Publications

Discipline
Institution
Keyword
Publication Year
File Type

Articles 4441 - 4470 of 45722

Full-Text Articles in Entire DC Network

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, …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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, …

Go to article

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. …

Go to article

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 …

Go to article

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% …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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 …

Go to article

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, …

Go to article

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. …

Go to article

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 …

Go to article

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.

Go to article

The Interaction Of Rurality And Rare Cancers For Travel Time To Cancer Care, Tracy Onega, Jennifer Alford-Teaster, Chris Leggett, Andrew Loehrer, Julie E. Weiss, Erika L. Moen, Catherine C. Pollack, Fahui Wang Mar 2023

The Interaction Of Rurality And Rare Cancers For Travel Time To Cancer Care, Tracy Onega, Jennifer Alford-Teaster, Chris Leggett, Andrew Loehrer, Julie E. Weiss, Erika L. Moen, Catherine C. Pollack, Fahui Wang

Faculty Publications

Purpose: Geographic access to cancer care is known to significantly impact utilization and outcomes. Longer travel times have negative impacts for patients requiring highly specialized care, such as for rare cancers, and for those in rural areas. Scant population-based research informs geographic access to care for rare cancers and whether rurality impacts that access. Methods: Using Medicare data (2014-2015), we identified prevalent cancers and cancer-directed surgeries, chemotherapy, and radiation. We classified cancers as rare (incidence <6/100,000/year) or common (incidence ≥6/100,000/year) using previously published thresholds and categorized rurality from ZIP code of beneficiary residence. We estimated travel time between beneficiaries and providers for each service based on ZIP code. Descriptive statistics summarized travel time by rare versus common cancers, service type, and rurality. Findings: We included 1,169,761 Medicare beneficiaries (21.9% in nonmetropolitan areas), 87,399; 7.5% had rare cancers, with 9,133,003 cancer-directed services. Travel times for cancer services ranged from approximately 29 minutes (25th percentile) to 68 minutes (75th percentile). Travel times were similar for rare and common cancers overall (median: 45 vs 43 minutes) but differed by service type; 13.4% of surgeries were >2 hours away for rare cancers, compared to 8.3% for common cancers. Increasing rurality disproportionately increased travel time to surgical care for rare compared to …

Go to article

Atmospheric Density Inversion Based On Swarm-C Satellite Accelerometer, Lirong Yin, Lei Wang, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng Mar 2023

Atmospheric Density Inversion Based On Swarm-C Satellite Accelerometer, Lirong Yin, Lei Wang, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng

Faculty Publications

We used the Swarm-C accelerometer data to invert the orbital atmospheric density in this study. First, the Swarm-C satellite mission data were obtained from the ESA’s public data platform, and preliminary data error correction was performed. This paper refers to the calibration method of GRACE-A satellite accelerometer data. It adds linear temperature correction on the original basis. Moreover, this study’s accelerometer data correction results were compared with the data correction results published by the ESA. In order to explore the influence of light radiation on the accelerometer, we established a geometric model of Swarm-C to simulate the physical shape of …

Go to article

Robust Mechanical And Water Responsive Mechanically Adaptive Property Of Physically Cross-Linked Sustainable Nanocellulose Composites, Jinlong Zhang, Qinglin Wu, Bulbul Ahmed, Ioan Negulescu, Rui Zhang Mar 2023

Robust Mechanical And Water Responsive Mechanically Adaptive Property Of Physically Cross-Linked Sustainable Nanocellulose Composites, Jinlong Zhang, Qinglin Wu, Bulbul Ahmed, Ioan Negulescu, Rui Zhang

Faculty Publications

The development of wood derived cellulose nanocrystal (CNCs) based sustainable composites is potential to address the plastic pollution issue. However, because of strong hydrogen bonding interactions inside the CNCs, it is still challenging to obtain composites with satisfied comprehensive performance via the incorporation of CNCs into poly (vinyl alcohol) (PVA) matrix directly, so two strategies combined with dopamine modification, base bath solution and ferric (III) ion treatment were reported to tailor the comprehensive performance of PVA/CNC composites. The comparative study indicated that both of physically cross-linked PDA@CNC/PVA and PVA/CNC composites have obvious improvement in term of mechanical and water resistance …

Go to article

Evaluation Of A Droplet Spraying/Misting System To Enhance Leachate Evaporation And Reduce Leachate Treatment Costs: A Case Study At The Three Rivers Solid Waste Authority Landfill, Kaitlen Drafts, Suzie Boxman, Scott Ribes, Mike Terry, Bryan Staley, Nicole Berge Mar 2023

Evaluation Of A Droplet Spraying/Misting System To Enhance Leachate Evaporation And Reduce Leachate Treatment Costs: A Case Study At The Three Rivers Solid Waste Authority Landfill, Kaitlen Drafts, Suzie Boxman, Scott Ribes, Mike Terry, Bryan Staley, Nicole Berge

Faculty Publications

Three Rivers Solid Waste Authority (TRSWA) operates a MSW landfill outside Jack-son, South Carolina at which leachate is stored in a collection pond then trucked to a local wastewater treatment plant (WWTP) for treatment. This landfill operates a droplet spraying/misting system (referred to as the Lilypad system) to enhance leachate evaporation and ultimately reduce the quantity of leachate in the pond that requires subsequent treatment. Little work investigating the efficacy in using such a system to enhance leachate evaporation has been reported. The overall goal associated with this study was to quantify the amount of evaporation enhanced by the droplet …

Go to article

Syndepositional Uptake Of Uranium, Molybdenum And Vanadium Into Modern Bahamian Carbonate Sediments During Early Diagenesis, Evan Magette, Adam Turner, Yongbo Peng, Achim D. Herrmann Mar 2023

Syndepositional Uptake Of Uranium, Molybdenum And Vanadium Into Modern Bahamian Carbonate Sediments During Early Diagenesis, Evan Magette, Adam Turner, Yongbo Peng, Achim D. Herrmann

Faculty Publications

Syndepositional diagenesis is a complicating factor when interpreting geochemical proxies in carbonate sedimentary environments. Previous studies have suggested that carbonate deposits may preserve the geochemical and isotopic signatures of seawater that can be used for paleo-redox reconstructions. However, more work is necessary to understand how these trace metals are preserved. The present study examines shallow marine carbonate sediments from the Bahamas to better understand diagenetic effects on trace metal uptake and sequestration. Analysis of diagenetic effects and trace metal uptake follows a multi-method approach, combining sequential extraction, stable isotope analyses, and rare earth elemental analysis. Stable isotopes track bacterial sulfate …

Go to article

Subinertial Sea Surface Heights Anomalies Estimated Using High Frequency Radar Surface Current Data In The Mississippi Bight, Uchenna Nwankwo, Stephan Howden, Dmitri Nechaev, Brian Dzwonkowski Mar 2023

Subinertial Sea Surface Heights Anomalies Estimated Using High Frequency Radar Surface Current Data In The Mississippi Bight, Uchenna Nwankwo, Stephan Howden, Dmitri Nechaev, Brian Dzwonkowski

Faculty Publications

Sea level studies in the Mississippi Bight (MSB) are less abundant than in other coastal waters of USA. This study investigates the subinertial (time scales >2 days) sea level anomalies in the MSB shelf. The diagnostics of the terms in the invariant form of the momentum equation were computed to determine which terms have the most influence on the anomalies in sea level. It was determined that at subinertial scales the geostrophic balance is the dominant balance in the MSB while the non-linear and time derivative terms are insignificant relative to the Coriolis term. A Least Squares procedure was applied …

Go to article

Sophisticated Vs. Rugged: Examining Gendered Brand Communication Styles And Social Media Engagement, Joanne T. Cao, Jamye Foster, Gallayanee S. Yaoyuneyong, Lacey K. Wallace Mar 2023

Sophisticated Vs. Rugged: Examining Gendered Brand Communication Styles And Social Media Engagement, Joanne T. Cao, Jamye Foster, Gallayanee S. Yaoyuneyong, Lacey K. Wallace

Faculty Publications

Advertising and marketing managers understand that not all brands need to be on social media, but what is not clearly understood is consumers’ engagement expectations for brands that are on social media. Therefore, this study investigates the impact of brand personality, specifically sophisticated and rugged brands, and gendered communication styles on consumers’ expectations of social media engagement. A scenario-based experiment is performed to test the hypotheses using a mock brand. The main study consisted of a Qualtrics consumer panel, and a MANOVA was utilized to examine three components of social media engagement (consumption, contribution, and creation) on the two brand …

Go to article

Meridional Survey Of The Central Pacific Reveals Iodide Accumulation In Equatorial Surface Waters And Benthic Sources In The Abyssal Plain, Rintaro Moriyasu, Kenneth M. Bolster, Dalton S. Hardisty, David C. Kadko, Mark P. Stephens, James W. Moffett Mar 2023

Meridional Survey Of The Central Pacific Reveals Iodide Accumulation In Equatorial Surface Waters And Benthic Sources In The Abyssal Plain, Rintaro Moriyasu, Kenneth M. Bolster, Dalton S. Hardisty, David C. Kadko, Mark P. Stephens, James W. Moffett

Faculty Publications

The distributions of iodate and iodide were measured along the GEOTRACES GP15 meridional transect at 152°W from the shelf of Alaska to Papeete, Tahiti. The transect included oxygenated waters near the shelf of Alaska, the full water column in the central basin in the North Pacific Basin, the upper water column spanning across seasonally mixed regimes in the north, oligotrophic regimes in the central gyre, and the equatorial upwelling. Iodide concentrations are highest in the permanently stratified tropical mixed layers, which reflect accumulation due to light-dependent biological processes, and decline rapidly below the euphotic zone. Vertical mixing coefficients (K …

Go to article

Evolution Of Coronal Magnetic Field Parameters During X5.4 Solar Flare, Seth H. Garland, Benjamin F. Akers, Vasyl B. Yurchyshyn, Robert D. Loper, Daniel J. Emmons Mar 2023

Evolution Of Coronal Magnetic Field Parameters During X5.4 Solar Flare, Seth H. Garland, Benjamin F. Akers, Vasyl B. Yurchyshyn, Robert D. Loper, Daniel J. Emmons

Faculty Publications

The coronal magnetic field over NOAA Active Region 11,429 during a X5.4 solar flare on 7 March 2012 is modeled using optimization based Non-Linear Force-Free Field extrapolation. Specifically, 3D magnetic fields were modeled for 11 timesteps using the 12-min cadence Solar Dynamics Observatory (SDO) Helioseismic and Magnetic Imager photospheric vector magnetic field data, spanning a time period of 1 hour before through 1 hour after the start of the flare. Using the modeled coronal magnetic field data, seven different magnetic field parameters were calculated for 3 separate regions: areas with surface |Bz| ≥ 300 G, areas of flare brightening seen …

Go to article

Machine Learning-Based Surrogate Models And Transfer Learning For Derivative Free Optimization Of Ht-Pem Fuel Cells, Luis A. Briceno-Mena, Christopher G. Arges, Jose A. Romagnoli Mar 2023

Machine Learning-Based Surrogate Models And Transfer Learning For Derivative Free Optimization Of Ht-Pem Fuel Cells, Luis A. Briceno-Mena, Christopher G. Arges, Jose A. Romagnoli

Faculty Publications

Widespread adoption of high-temperature polymer electrolyte membrane electrochemical systems, such as fuel cells (HT-PEMFCs), requires models and computational tools for accurate optimization and guiding new materials for enhancing performance and durability. In this contribution, knowledge-based modelling and data-driven modelling are combined using Few-Shot Learning and implementing an Automated Machine Learning framework for the generation of Machine Learning-based surrogate models. Applicability of the resulting model for derivative-free optimization is demonstrated. Additionally, a way of considering extrapolation in the optimization task is presented. Results show that although extrapolation is needed to achieve better solutions during optimization, it can be monitored and managed. …

Go to article

Surface Plasmon Resonance (Spr) Sensor For Cancer Biomarker Detection, Sreyashi Das, Ram Devireddy, Manas Ranjan Gartia Mar 2023

Surface Plasmon Resonance (Spr) Sensor For Cancer Biomarker Detection, Sreyashi Das, Ram Devireddy, Manas Ranjan Gartia

Faculty Publications

A biomarker is a physiological observable marker that acts as a stand-in and, in the best-case scenario, forecasts a clinically significant outcome. Diagnostic biomarkers are more convenient and cost-effective than directly measuring the ultimate clinical outcome. Cancer is among the most prominent global health problems and a major cause of morbidity and death globally. Therefore, cancer biomarker assays that are trustworthy, consistent, precise, and verified are desperately needed. Biomarker-based tumor detection holds a lot of promise for improving disease knowledge at the molecular scale and early detection and surveillance. In contrast to conventional approaches, surface plasmon resonance (SPR) allows for …

Go to article

First Prev Next Last