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Articles 6511 - 6540 of 45176

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High-Energy Emission From A Magnetar Giant Flare In The Sculptor Galaxy, M. Ajello, W. B. Atwood, M. Axelsson, L. Baldini, G. Barbiellini, M. G. Baring, D. Bastieri, R. Bellazzini, A. Berretta, E. Bissaldi, R. D. Blandford, R. Bonino, J. Bregeon, P. Bruel, R. Buehler, E. Burns, S. Buson, R. A. Cameron, P. A. Caraveo, E. Cavazzuti, S. Chen, C. C. Cheung, G. Chiaro, S. Ciprini, D. Costantin, M. Crnogorcevic, S. Cutini, F. D’Ammando, P. De La Torre Luque, F. De Palma, S. W. Digel, N. Di Lalla, L. Di Venere Apr 2021

High-Energy Emission From A Magnetar Giant Flare In The Sculptor Galaxy, M. Ajello, W. B. Atwood, M. Axelsson, L. Baldini, G. Barbiellini, M. G. Baring, D. Bastieri, R. Bellazzini, A. Berretta, E. Bissaldi, R. D. Blandford, R. Bonino, J. Bregeon, P. Bruel, R. Buehler, E. Burns, S. Buson, R. A. Cameron, P. A. Caraveo, E. Cavazzuti, S. Chen, C. C. Cheung, G. Chiaro, S. Ciprini, D. Costantin, M. Crnogorcevic, S. Cutini, F. D’Ammando, P. De La Torre Luque, F. De Palma, S. W. Digel, N. Di Lalla, L. Di Venere

Faculty Publications

Magnetars are the most highly magnetized neutron stars in the cosmos (with magnetic field 1013–1015 G). Giant flares from magnetars are rare, short-duration (about 0.1 s) bursts of hard X-rays and soft γ rays1,2. Owing to the limited sensitivity and energy coverage of previous telescopes, no magnetar giant flare has been detected at gigaelectronvolt (GeV) energies. Here, we report the discovery of GeV emission from a magnetar giant flare on 15 April 2020 (refs. 3,4 and A. J. Castro-Tirado et al., manuscript in preparation). The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope detected GeV γ rays …

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R Coronae Borealis Star Evolution: Simulating 3d Merger Events To 1d Stellar Evolution Including Large-Scale Nucleosynthesis, Bradley Munson, Emmanouil Chatzopoulos, Juhan Frank, Geoffrey Clayton, Courtney Crawford, Pavel A. Denissenkov, Falk Herwig Apr 2021

R Coronae Borealis Star Evolution: Simulating 3d Merger Events To 1d Stellar Evolution Including Large-Scale Nucleosynthesis, Bradley Munson, Emmanouil Chatzopoulos, Juhan Frank, Geoffrey Clayton, Courtney Crawford, Pavel A. Denissenkov, Falk Herwig

Faculty Publications

R Coronae Borealis (RCB) stars are rare hydrogen-deficient carbon-rich variable supergiants thought to be the result of dynamically unstable white dwarf mergers. We attempt to model RCB stars through all the relevant timescales by simulating a merger event in Octo-tiger, a 3D adaptive mesh refinement (AMR) hydrodynamics code, and mapping the post-merger object into MESA, a 1D stellar evolution code. We then post-process the nucleosynthesis on a much larger nuclear reaction network to study the enhancement of s-process elements. We present models that match observations or previous studies in most surface abundances, isotopic ratios, early evolution, and lifetimes. We also …

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Reduced-Order Fast Converging Observers For Systems With Discrete Measurements And Measurement Error, Frédéric Mazenc, Michael Malisoff, Zhong Ping Jiang Apr 2021

Reduced-Order Fast Converging Observers For Systems With Discrete Measurements And Measurement Error, Frédéric Mazenc, Michael Malisoff, Zhong Ping Jiang

Faculty Publications

We provide novel reduced-order observer designs for continuous-time nonlinear systems with measurement error. Our first result applies to systems with continuous output measurements, and provides observers that converge in a fixed finite time that is independent of the initial state when the measurement error is zero. Our second result applies under discrete measurements, and provides observers that converge asymptotically with a rate of convergence that is proportional to the negative of the logarithm of the size of a sampling interval. Our observers satisfy an enhanced input-to-state stability property with respect to the measurement error, in which an overshoot term only …

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Effect Of Serving Plate Types And Color Cues On Liking And Purchase Intent Of Cheese-Flavored Tortilla Chips, Cristhiam Gurdian, Damir Torrico, Bin Li, Witoon Prinyawiwatkul Apr 2021

Effect Of Serving Plate Types And Color Cues On Liking And Purchase Intent Of Cheese-Flavored Tortilla Chips, Cristhiam Gurdian, Damir Torrico, Bin Li, Witoon Prinyawiwatkul

Faculty Publications

No abstract provided.

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Social Comparisons In Those With Borderline Personality Disorder Traits: Merging Social Comparison Theory And Social Cognition In Borderline Personality Disorder, Lexie J. Duhon Apr 2021

Social Comparisons In Those With Borderline Personality Disorder Traits: Merging Social Comparison Theory And Social Cognition In Borderline Personality Disorder, Lexie J. Duhon

Honors Capstones

No abstract provided.

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The Synchrony Of Pathogen Events, Tivon Eugene Apr 2021

The Synchrony Of Pathogen Events, Tivon Eugene

Honors Capstones

No abstract provided.

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Su(3)-Guided Realistic Nucleon-Nucleon Interactions For Large-Scale Calculations, G. H. Sargsyan, K. D. Launey, R. B. Baker, T. Dytrych, J. P. Draayer Apr 2021

Su(3)-Guided Realistic Nucleon-Nucleon Interactions For Large-Scale Calculations, G. H. Sargsyan, K. D. Launey, R. B. Baker, T. Dytrych, J. P. Draayer

Faculty Publications

We examine nucleon-nucleon realistic interactions, based on their SU(3) decomposition to SU(3)-symmetric components. We find that many of these interaction components are negligible, which, in turn, allows us to identify a subset of physically relevant components that are sufficient to describe the structure of low-lying states in C12 and related observables, such as excitation energies, electric quadrupole transitions, and rms radii. We find that paring down the interaction by half or more yields results that practically coincide with the corresponding ab initio calculations with the full interaction. In addition, we show that while various realistic interactions differ in their SU(3) …

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The Preparation And Properties Of Polyurethane Foams Reinforced With Bamboo Fiber Sources In China, Chongpeng Qiu, Feng Li, Liang Wang, Xuelun Zhang, You Zhang, Qi Tang, Xiyu Zhao, Cornelis F. De Hoop, Xiaopeng Peng, Xiaojuan Yu, Xingyan Huang Apr 2021

The Preparation And Properties Of Polyurethane Foams Reinforced With Bamboo Fiber Sources In China, Chongpeng Qiu, Feng Li, Liang Wang, Xuelun Zhang, You Zhang, Qi Tang, Xiyu Zhao, Cornelis F. De Hoop, Xiaopeng Peng, Xiaojuan Yu, Xingyan Huang

Faculty Publications

Polyurethane (PU) foams reinforced with bamboo fiber sources in China, i.e., bamboo fiber, bamboo α-cellulose fiber, and bamboo nanocellulose fiber, were prepared and their physico-mechanical properties were analyzed in this work. The bamboo fiber sources and PU foams were characterized by Fourier transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), Thermal gravimetric analysis (TGA) and universal compression testing. The results indicated that the hydroxyl groups on the fiber surfaces were enhanced by removing non-celluloses in the preparation of α-cellulose and nanocellulose. With the addition of small particle size α-cellulose and nanocellulose, the cell sizes of PU foams were reduced due …

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Stakeholder’S Risk Perceptions Ofwild Pigs: Is There A Gender Difference?, Maria Bampasidou, Michael D. Kaller, Shaun M. Tanger Apr 2021

Stakeholder’S Risk Perceptions Ofwild Pigs: Is There A Gender Difference?, Maria Bampasidou, Michael D. Kaller, Shaun M. Tanger

Faculty Publications

Substantial literature indicates that genders differ in terms of risk perception and values regarding wildlife management. Lack of equal stakeholder representation is also documented, which can also impact the effectiveness of human-wildlife conflict resolution interventions and education and outreach efforts. This paper investigates gender differences in perceptions about risks and potential adverse impacts on production, health, environment, safety, and population management posed by wild pigs. A survey was used to collect data from a random sample of adult residents (N = 1221) in Louisiana. We analyzed responses from 226 female and 832 male producers. We observed differences in how these …

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Physiology Of Energy Intake In The Weight-Reduced State, Hans Rudolf Berthoud, Randy J. Seeley, Susan B. Roberts Apr 2021

Physiology Of Energy Intake In The Weight-Reduced State, Hans Rudolf Berthoud, Randy J. Seeley, Susan B. Roberts

Division of Basic Science Faculty Publications

Physiological adaptations to intentional weight loss can facilitate weight regain. This review summarizes emerging findings on hypothalamic and brainstem circuitry in the regulation of body weight and identifies promising areas for research to improve therapeutic interventions for sustainable weight loss. There is good evidence that body weight is actively regulated in a homeostatic fashion similar to other physiological parameters. However, the defended level of body weight is not fixed but rather depends on environmental conditions and genetic background in an allostatic fashion. In an environment with plenty of easily available energy-dense food and low levels of physical activity, prone individuals …

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A Generalized Approach For Sperm Cryopreservation In The Genus Pomoxis: Sperm Cryopreservation And Fertilization Efficiency Of Black-Stripe Black Crappie, Pomoxis Nigromaculatus, Christian A. Shirley, Michael E. Colvin, Terrence R. Tiersch, Peter J. Allen Apr 2021

A Generalized Approach For Sperm Cryopreservation In The Genus Pomoxis: Sperm Cryopreservation And Fertilization Efficiency Of Black-Stripe Black Crappie, Pomoxis Nigromaculatus, Christian A. Shirley, Michael E. Colvin, Terrence R. Tiersch, Peter J. Allen

Faculty Publications

Approaches for white crappie, Pomoxis annularis sperm cryopreservation have led to interest in applying similar methods to black-stripe black crappie, Pomoxis nigromaculatus. Their rarity in wild populations makes them a preferred phenotype for hatchery use. Sperm cryopreservation procedures were compared between black-stripe black crappie and white crappie for sperm motility and egg fertilization rate. There was no difference in black-stripe black crappie sperm motility after thawing between 5% dimethyl sulfoxide (DMSO, 45% motility) and 10% methanol (50% motility). However, fertilization rates were higher (p <.001) for sperm cryoprotected with 5% DMSO (38 ± 8%) than 10% methanol (22 ± 7%). Hatchery use requires sperm-to-egg ratios and fertilizing potential of single doses (i.e., 0.5 ml straw). Using black-stripe black crappie sperm (2.5 × 108 sperm/ml; 5% DMSO), the highest fertilization (27%) was found using single straws with 785 eggs (0.25 ml); total sperm:egg ratio: 159,000:1; motile sperm:egg ratio: 71,700:1. Therefore, sperm of two Pomoxis species could be cryopreserved using 350 mOsmol/kg Hanks' balanced salt solution as an extender, 5% DMSO as a cryoprotectant, cooling at 40°C/min, and thawing for 8 s at 40°C to maintain sperm motility and fertility. Basic protocols can be generalized within a genus if variables such as sperm concentration, process timing, and sample volumes are controlled.

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Bilateral Nirs Measurements Of Muscle Mitochondrial Capacity: Feasibility And Repeatability, Rewais Hanna, Jigar Gosalia, Alaina Demalis, Zachary Hobson, Kevin K. Mccully, Brian A. Irving, Swapan Mookerjee, Giampietro L. Vairo, David N. Proctor Apr 2021

Bilateral Nirs Measurements Of Muscle Mitochondrial Capacity: Feasibility And Repeatability, Rewais Hanna, Jigar Gosalia, Alaina Demalis, Zachary Hobson, Kevin K. Mccully, Brian A. Irving, Swapan Mookerjee, Giampietro L. Vairo, David N. Proctor

Faculty Publications

Background: Non-invasive determination of mitochondrial capacity via near infrared spectroscopy (NIRS) typically involves voluntary exercise of a single muscle group followed by as many as 26 brief ischemic cuff occlusions to determine a single recovery rate constant (k). Purpose: To determine the within- and between-visit repeatability of a shortened bilateral NIRS protocol, and to establish the feasibility of hamstring k measurements. Methods: Sixteen young (eight women, eight men; 22 ± 3 years) active adults underwent a bilateral electrical stimulation protocol in which multiple (n = 4) measurements of k for the vastus lateralis (VL) and medial hamstring (MH) muscles were …

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Physical Activity, Inflammation, Coronary Artery Calcification, And Incident Coronary Heart Disease In African Americans: Insights From The Jackson Heart Study, Daisuke Kamimura, Loretta R. Cain-Shields, Donald Clark, Adebamike A. Oshunbade, Kellan E. Ashley, Cameron S. Guild, Paul D. Loprinzi, Robert Newton, Michael J. Blaha, Takeki Suzuki, Javed Butler, John E. Hall, Adolfo Correa, Michael E. Hall Apr 2021

Physical Activity, Inflammation, Coronary Artery Calcification, And Incident Coronary Heart Disease In African Americans: Insights From The Jackson Heart Study, Daisuke Kamimura, Loretta R. Cain-Shields, Donald Clark, Adebamike A. Oshunbade, Kellan E. Ashley, Cameron S. Guild, Paul D. Loprinzi, Robert Newton, Michael J. Blaha, Takeki Suzuki, Javed Butler, John E. Hall, Adolfo Correa, Michael E. Hall

Population and Public Health Science Faculty Publications

Objective: To examine associations between physical activity (PA), inflammation, coronary artery calcification (CAC), and incident coronary heart disease (CHD) in African Americans. Methods: Among Jackson Heart Study participants without prevalent CHD at baseline (n=4295), we examined the relationships between PA and high-sensitivity C-reactive protein, the presence of CAC (Agatston score ≥100), and incident CHD. Based on the American Heart Association's Life's Simple 7 metrics, participants were classified as having poor, intermediate, or ideal PA. Results: After adjustment for possible confounding factors, ideal PA was associated with lower high-sensitivity C-reactive protein levels (β, −0.15; 95% CI, −0.15 to −0.002) and a …

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Physical Fitness Spurts In Childhood: A Study In Boys, Sara Pereira, Fernando Garbeloto, Eduardo Guimarães, Carla Santos, Adam Baxter-Jones, Go Tani, Duarte Freitas, Alcibíades Bustamante, Peter T. Katzmarzyk, José Maia Apr 2021

Physical Fitness Spurts In Childhood: A Study In Boys, Sara Pereira, Fernando Garbeloto, Eduardo Guimarães, Carla Santos, Adam Baxter-Jones, Go Tani, Duarte Freitas, Alcibíades Bustamante, Peter T. Katzmarzyk, José Maia

Population and Public Health Science Faculty Publications

This study aimed to (1) estimate age-at-mid-growth spurt (age-at-MGS) in Portuguese boys from two different regions—the Azores islands and Viana do Castelo, and (2) identify spurts in a variety of physical fitness (PF) components aligned by age-at-MGS in the two samples. A total of 176 (Azores, n = 91; Viana do Castelo, n = 85) boys aged 6 years old were followed annually to 10 years of age. Age-at-MGS and spurts in PF components (speed, explosive muscular strength, abdominal muscular strength, agility, and flexibility) were identified for each sample. The timing and intensities of the spurts were estimated using a …

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Resting Energy Expenditure Is Elevated In Asthma, Jacob T. Mey, Brittany Matuska, Laura Peterson, Patrick Wyszynski, Michelle Koo, Jacqueline Sharp, Emily Pennington, Stephanie Mccarroll, Sarah Micklewright, Peng Zhang, Mark Aronica, Kristin K. Hoddy, Catherine M. Champagne, Steven B. Heymsfield, Suzy A.A. Comhair, John P. Kirwan, Serpil C. Erzurum, Anny Mulya Apr 2021

Resting Energy Expenditure Is Elevated In Asthma, Jacob T. Mey, Brittany Matuska, Laura Peterson, Patrick Wyszynski, Michelle Koo, Jacqueline Sharp, Emily Pennington, Stephanie Mccarroll, Sarah Micklewright, Peng Zhang, Mark Aronica, Kristin K. Hoddy, Catherine M. Champagne, Steven B. Heymsfield, Suzy A.A. Comhair, John P. Kirwan, Serpil C. Erzurum, Anny Mulya

Division of Basic Science Faculty Publications

Background:Asthma physiology affects respiratory function and inflammation, factors that may contribute to elevated resting energy expenditure (REE) and altered body composition. Objective: We hypothesized that asthma would present with elevated REE compared to weight-matched healthy controls. Methods: Adults with asthma (n = 41) and healthy controls (n = 20) underwent indirect calorimetry to measure REE, dual-energy X-ray absorptiometry (DEXA) to measure body composition, and 3-day diet records. Clinical assessments included spirometry, fractional exhaled nitric oxide (FENO), and a complete blood count. Results: Asthmatics had greater REE than controls amounting to an increase of ~100 kcals/day, even though body mass index …

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Effect Of 2 Years Of Calorie Restriction On Liver Biomarkers: Results From The Calerie Phase 2 Randomized Controlled Trial, James L. Dorling, Eric Ravussin, Leanne M. Redman, Manju Bhapkar, Kim M. Huffman, Susan B. Racette, Sai K. Das, John W. Apolzan, William E. Kraus, Christoph Höchsmann, Corby K. Martin Apr 2021

Effect Of 2 Years Of Calorie Restriction On Liver Biomarkers: Results From The Calerie Phase 2 Randomized Controlled Trial, James L. Dorling, Eric Ravussin, Leanne M. Redman, Manju Bhapkar, Kim M. Huffman, Susan B. Racette, Sai K. Das, John W. Apolzan, William E. Kraus, Christoph Höchsmann, Corby K. Martin

Clinical Research Faculty Publications

Purpose: Calorie restriction (CR) is an effective treatment for obesity-related liver and metabolic disease. However, CR studies in individuals without obesity are needed to see if CR could delay disease onset. Liver biomarkers indicate hepatic health and are linked to cardiometabolic disease. Our aim was to examine the effects of a 2-year CR intervention on liver biomarkers in healthy individuals without obesity. Methods: The Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE) study was a 2-year randomized controlled trial. Overall, 218 participants (body mass index: 25.1 ± 1.7 kg/m2) were enrolled into a control group (n = …

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Evaluation Of Changes In Drug Susceptibility And Population Genetic Structure In Haemonchus Contortus Following Worm Replacement As A Means To Reverse The Impact Of Multiple-Anthelmintic Resistance On A Sheep Farm, Melissa M. George, Adriano F. Vatta, Sue B. Howell, Bob E. Storey, Ciaran J. Mccoy, Adrian J. Wolstenholme, Elizabeth M. Redman, John S. Gilleard, Ray M. Kaplan Apr 2021

Evaluation Of Changes In Drug Susceptibility And Population Genetic Structure In Haemonchus Contortus Following Worm Replacement As A Means To Reverse The Impact Of Multiple-Anthelmintic Resistance On A Sheep Farm, Melissa M. George, Adriano F. Vatta, Sue B. Howell, Bob E. Storey, Ciaran J. Mccoy, Adrian J. Wolstenholme, Elizabeth M. Redman, John S. Gilleard, Ray M. Kaplan

Faculty Publications

A population of Haemonchus contortus that was highly resistant to benzimidazoles and avermectin/milbemycins with a subpopulation that was resistant to levamisole, was replaced with a susceptible laboratory isolate of H. contortus in a flock of sheep. The anthelmintic susceptibility and population genetics of the newly established population were evaluated for 3.5 years using in vivo, in vitro, and molecular methods. Successful replacement of the resistant population with a susceptible population was confirmed using phenotypic and genotypic measurements; larval development assay indicated full anthelmintic susceptibility; albendazole treatment yielded 98.7% fecal egg count reduction; pyrosequence genotyping of single nucleotide polymorphisms in positions …

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Efficacy Of Gaseous Chlorine Dioxide In Reducing Salmonella Enterica, E. Coli O157:H7, And Listeria Monocytogenes On Strawberries And Blueberries, Phillip Luu, Vijay Singh Chhetri, Marlene E. Janes, Joan M. King, Achyut Adhikari Apr 2021

Efficacy Of Gaseous Chlorine Dioxide In Reducing Salmonella Enterica, E. Coli O157:H7, And Listeria Monocytogenes On Strawberries And Blueberries, Phillip Luu, Vijay Singh Chhetri, Marlene E. Janes, Joan M. King, Achyut Adhikari

Faculty Publications

Gaseous chlorine dioxide, a strong oxidizing agent can be utilized as an effective alternative sanitizing agent. This study evaluated the efficacy of low concentration (≤5 mg/L) gaseous chlorine dioxide (ClO₂) treatment with gas permeable sachets in reducing the levels of Salmonella, E. coli O157:H7, and Listeria monocytogenes on strawberries and blueberries. Strawberries and blueberries were spot inoculated (107 CFU/g) with multi-strain cocktails of each pathogen and dried for 120 min inside a biosafety cabinet. A treatment chamber was successfully designed to sanitize inoculated samples in sealed 5 gallon chambers containing gaseous ClO₂ sachets. The gaseous ClO₂ overhead concentration was maintained …

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Evaluation Of Eight Kinds Of Flavor Enhancer Of Umami Taste By An Electronic Tongue, Kai Wang, Haining Zhuang, Fangling Bing, Da Chen, Tao Feng, Zhimin Xu Apr 2021

Evaluation Of Eight Kinds Of Flavor Enhancer Of Umami Taste By An Electronic Tongue, Kai Wang, Haining Zhuang, Fangling Bing, Da Chen, Tao Feng, Zhimin Xu

Faculty Publications

The umami intensity of single flavor enhancer was detected by an electronic tongue and human sensory. The linear fit was performed to unravel the concentration–response values correlations of eight flavor enhancers. The electronic tongue response data were then analyzed using principal component analysis (PCA) and discriminant factor analysis (DFA) method. It was found that the umami response value of the electronic tongue and the flavor enhancer concentration showed a semi-logarithmic function. Moreover, the PCA and DFA could successfully distinguish the variety and concentration of flavor enhancer. The umami intensities were also assessed by human sensory and showed consistency with those …

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Determination Of Ligustrazine In Rat Serum By Polymer Monolithic Micro-Extraction Combined With Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry, Danling Sun, Xitian Peng, Maomin Peng, Xian Zhang, Hong Xia, Zhimin Xu, Xizhou Hu Apr 2021

Determination Of Ligustrazine In Rat Serum By Polymer Monolithic Micro-Extraction Combined With Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry, Danling Sun, Xitian Peng, Maomin Peng, Xian Zhang, Hong Xia, Zhimin Xu, Xizhou Hu

Faculty Publications

This study focused on developing an effective and environmentally friendly method to measure ligustrazine in rat serum by using polymer monolith micro-extraction (PMME) technique. A poly (methacrylic acid-ethylene glycol dimethacrylate) material was used to extract ligustrazine through hydrophobic and ion-exchange interaction. Qualitative and quantitative analysis was performed by a liquid chromatography and tandem mass spectrometry. After optimization of several PMME conditions, the developed method exhibited excellent extraction performance to the ligustrazine. Good linearity was acquired ranging from 10 to 2,000 ng mL-1, and the limit of detection of the proposed method was 0.14 ng mL-1. The recoveries measured by spiking …

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Global Well-Posedness For The Logarithmically Energy-Supercritical Nonlinear Wave Equation With Partial Symmetry, Aynur Bulut, Benjamin Dodson Apr 2021

Global Well-Posedness For The Logarithmically Energy-Supercritical Nonlinear Wave Equation With Partial Symmetry, Aynur Bulut, Benjamin Dodson

Faculty Publications

We establish global well-posedness and scattering results for the logarithmically energy-supercritical nonlinear wave equation, under the assumption that the initial data satisfies a partial symmetry condition. These results generalize and extend work of Tao in the radially symmetric setting. The techniques involved include weighted versions of Morawetz and Strichartz estimates, with weights adapted to the partial symmetry assumptions. In an appendix, we establish a corresponding quantitative result for the energy-critical problem.

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Envrtype: A Software To Interplay Enviromics And Quantitative Genomics In Agriculture, Germano Costa-Neto, Giovanni Galli, Humberto Fanelli Carvalho, Jose Crossa, Roberto Fritsche-Neto Apr 2021

Envrtype: A Software To Interplay Enviromics And Quantitative Genomics In Agriculture, Germano Costa-Neto, Giovanni Galli, Humberto Fanelli Carvalho, Jose Crossa, Roberto Fritsche-Neto

Faculty Publications

Envirotyping is an essential technique used to unfold the nongenetic drivers associated with the phenotypic adaptation of living organisms. Here, we introduce the EnvRtype R package, a novel toolkit developed to interplay large-scale envirotyping data (enviromics) into quantitative genomics. To start a user-friendly envirotyping pipeline, this package offers: (1) remote sensing tools for collecting (get_weather and extract_GIS functions) and processing ecophysiological variables (processWTH function) from raw environmental data at single locations or worldwide; (2) environmental characterization by typing environments and profiling descriptors of environmental quality (env_typing function), in addition to gathering environmental covariables as quantitative descriptors for predictive purposes (W_matrix …

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Effective Strategies For Students With Emotional And Behavioral Disorders, Paul Mooney, Joseph B. Ryan Apr 2021

Effective Strategies For Students With Emotional And Behavioral Disorders, Paul Mooney, Joseph B. Ryan

Faculty Publications

No abstract provided.

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Hybrid Modeling And Prediction Of Oyster Norovirus Outbreaks, Shima Shamkhali Chenar, Zhiqiang Deng Apr 2021

Hybrid Modeling And Prediction Of Oyster Norovirus Outbreaks, Shima Shamkhali Chenar, Zhiqiang Deng

Faculty Publications

This paper presents a hybrid model for predicting oyster norovirus outbreaks by combining the Artificial Neural Networks (ANNs) and Principal Component Analysis (PCA) methods and using the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite remote-sensing data. Specifically, 10 years (2007-2016) of cloud-free MODIS Aqua data for water leaving reflectance and environmental data were extracted from the center of each oyster harvest area. Then, the PCA was utilized to compress the size of the MODIS Aqua data. An ANN model was trained using the first 4 years of the data from 2007 to 2010 and validated using the additional 6 years of …

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Microstructure-Sensitive Estimation Of Fatigue Life Using Cyclic Thermodynamic Entropy As An Index For Metals, Arash P. Jirandehi, M. M. Khonsari Apr 2021

Microstructure-Sensitive Estimation Of Fatigue Life Using Cyclic Thermodynamic Entropy As An Index For Metals, Arash P. Jirandehi, M. M. Khonsari

Faculty Publications

A technique for fatigue life prediction of metals is presented based on a microstructure-sensitive estimation of plastic strain energy per cycle. The approach enables rapid prediction of temperature evolution, estimation of cyclic plastic energy, and fracture fatigue entropy. Theoretical and experimental results are presented for low-carbon steel 1018 and aluminum 7075-T6 specimens. It is shown that the approach realistically predicts the fatigue life of metallic specimens.

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Temperature Dependence Of Density And Viscosity Of Biobutanol-Gasoline Blends, Daniel Trost, Adam Polcar, Dorin Boldor, Divine Bup Nde, Artur Wolak, Vojtĕch Kumbár Apr 2021

Temperature Dependence Of Density And Viscosity Of Biobutanol-Gasoline Blends, Daniel Trost, Adam Polcar, Dorin Boldor, Divine Bup Nde, Artur Wolak, Vojtĕch Kumbár

Faculty Publications

Butanol seems to be an eligible fuel for compensating for the increasing fuel consumption. Biobutanol could be produced from local sources in the place of use. Its properties show similar results to gasoline, so biobutanol could be added as a biocomponent into fuels. Important properties, in the case of blending biobutanol into gasoline, are its fluid properties and their dependence on the temperature. Therefore, in this paper, the volumetric mass density and viscosity of the selected ratios between biobutanol and gasoline (0, 5, 10, 85, 100 vol.%) were tested over the temperature range from -10 °C up to 40 °C. …

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Microwave-Assisted Lignin Liquefaction In Hydrazine And Ethylene Glycol: Reaction Pathways Via Response Surface Methodology, Divine B. Nde, Mohamad Barekati-Goudarzi, Pranjali D. Muley, Lavrent Khachatryan, Dorin Boldor Apr 2021

Microwave-Assisted Lignin Liquefaction In Hydrazine And Ethylene Glycol: Reaction Pathways Via Response Surface Methodology, Divine B. Nde, Mohamad Barekati-Goudarzi, Pranjali D. Muley, Lavrent Khachatryan, Dorin Boldor

Faculty Publications

Microwave assisted liquefaction (MAL) of alkali lignin in ethylene glycol (EG) in the presence of hydrazine was carried out using response surface methodology. Dielectric properties of mixtures of lignin/EG at different hydrazine concentrations were determined to enhance the understanding of the MAL process. MAL parameters were hydrazine concentration (1–3%), temperature (100-180 °C), time (5-45 min) with the maximum microwave heating power limited to 750 W. Lignin/EG ratio was fixed at 1 g:10 ml. Dielectric properties were significantly influenced by hydrazine concentration and temperature. Major products from the liquefaction process (as % of peak areas) were grouped into guaiacol and derivatives …

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Oxytocin Receptor Expressing Cells In The Mouse Retina, Jackson Green Apr 2021

Oxytocin Receptor Expressing Cells In The Mouse Retina, Jackson Green

Honors Capstones

No abstract provided.

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Understanding Ephemeral Architecture, Naomi Mareschal Apr 2021

Understanding Ephemeral Architecture, Naomi Mareschal

Honors Capstones

No abstract provided.

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Effect Of Kisspeptin-10 On Glucose-Induced Insulin Secretion In Equines, Amy Taylor Apr 2021

Effect Of Kisspeptin-10 On Glucose-Induced Insulin Secretion In Equines, Amy Taylor

Honors Capstones

No abstract provided.

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