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Fall Facts, 2023, Louisiana State University Oct 2023

Fall Facts, 2023, Louisiana State University

Fall Facts

No abstract provided.


Fall 2023 Catalog, Lsu Press Oct 2023

Fall 2023 Catalog, Lsu Press

LSU Press Seasonal Catalogs

No abstract provided.


Chemical Communication In Insects: New Advances In Integrated Pest Management Strategies, Angel Guerrero, Gadi V.P. Reddy Oct 2023

Chemical Communication In Insects: New Advances In Integrated Pest Management Strategies, Angel Guerrero, Gadi V.P. Reddy

Faculty Publications

No abstract provided.


Early Season Monitoring Of Tarnished Plant Bug, Lygus Lineolaris, In Wild Hosts Using Pheromone Traps, Justin George, James P. Glover, Gadi V.P. Reddy, Chris Johnson, David R. Hall Oct 2023

Early Season Monitoring Of Tarnished Plant Bug, Lygus Lineolaris, In Wild Hosts Using Pheromone Traps, Justin George, James P. Glover, Gadi V.P. Reddy, Chris Johnson, David R. Hall

Faculty Publications

The tarnished plant bug, Lygus lineolaris (Hemiptera: Miridae), has a wide host range of over 700 plant species, including 130 crops of economic importance. During early spring, managing the field edges with weeds and other wild hosts is important in preventing early-season infestations of L. lineolaris in cotton to prevent damage to the squares and other fruiting structures. Scouting fields for L. lineolaris is time- and labor-intensive, and end-user variability associated with field sampling can lead to inaccuracies. Insect traps that combine visual cues and pheromones are more accurate, sustainable, and economically feasible in contrast to traditional insect detection methods. …


Message Or Messenger? Source And Labeling Effects In Authoritarian Response To Protest, Daniel Arnon, Pearce Edwards, Handi Li Oct 2023

Message Or Messenger? Source And Labeling Effects In Authoritarian Response To Protest, Daniel Arnon, Pearce Edwards, Handi Li

Faculty Publications

Authoritarian regimes in the 21st century have increasingly turned to using information control rather than kinetic force to respond to threats to their rule. This paper studies an often overlooked type of information control: strategic labeling and public statements by regime sources in response to protests. Labeling protesters as violent criminals may increase support for repression by signaling that protests are illegitimate and deviant. Regime sources, compared to more independent sources, could increase support for repression even more when paired with such an accusatory label. Accommodative labels should have opposing effects—decreasing support for repression. The argument is tested with a …


Examination Of Real-Time Variation In Interpersonal Hopelessness And Suicidal Desire In A College Student Sample Reporting Past-2-Week Suicidal Ideation, Jessica L. Gerner, Emma H. Moscardini, Sean M. Mitchell, Ryan M. Hill, Raymond P. Tucker Oct 2023

Examination Of Real-Time Variation In Interpersonal Hopelessness And Suicidal Desire In A College Student Sample Reporting Past-2-Week Suicidal Ideation, Jessica L. Gerner, Emma H. Moscardini, Sean M. Mitchell, Ryan M. Hill, Raymond P. Tucker

Faculty Publications

Introduction: Interpersonal hopelessness (IH), as outlined in the Interpersonal Theory of Suicide, is theorized to include two correlated, distinct constructs: hopelessness about one's thwarted belongingness (IH-TB) and about perceived burdensomeness on others (IH-PB). Few studies have explored IH, and none have explored its temporal stability or prospective prediction of suicidal desire. Methods: Undergraduates (N = 43) selectively recruited for past-2-week suicidal ideation completed five ecological momentary assessment surveys per day for 10-days. Intraclass correlations, root mean square of successive differences, and multilevel models were used to examine the data and test relationships among predictor variables. Results: IH-TB and IH-PB demonstrated …


"Weight Loss Is My Goal And Being Healthy Is My Goal. I Can Get Over The Hot Flashes": A Qualitative Exploration Of Menopausal Transition Experiences And Preferences For Weight Management Among White Women, Chelsea L. Kracht, Jessica St. Romain, Julie C. Hardee, Nanette Santoro, Leanne M. Redman, Kara L. Marlatt Oct 2023

"Weight Loss Is My Goal And Being Healthy Is My Goal. I Can Get Over The Hot Flashes": A Qualitative Exploration Of Menopausal Transition Experiences And Preferences For Weight Management Among White Women, Chelsea L. Kracht, Jessica St. Romain, Julie C. Hardee, Nanette Santoro, Leanne M. Redman, Kara L. Marlatt

Clinical Research Faculty Publications

Objectives A qualitative research study design was used to (1) describe experiences of White women during the menopausal transition, and (2) identify barriers and facilitators for participating in a lifestyle program targeting weight management. Methods Perimenopausal and postmenopausal White women who self-reported a desire to lose or maintain weight participated in focus groups. Women were queried about their past diet, exercise, and weight management practices; menopausal transition; and specific components and considerations for developing a lifestyle program for weight management. Thematic analysis was conducted on coded transcripts and four main themes emerged, each containing three to six subthemes. Results Twenty-eight …


Potential Impact Of Wearables On Physical Activity Guidelines And Interventions: Opportunities And Challenges, Jason M.R. Gill, Timothy J. Chico, Aiden Doherty, Jessilyn Dunn, Ulf Ekelund, Peter T. Katzmarzyk, Karen Milton, Marie H. Murphy, Emmanuel Stamatakis Oct 2023

Potential Impact Of Wearables On Physical Activity Guidelines And Interventions: Opportunities And Challenges, Jason M.R. Gill, Timothy J. Chico, Aiden Doherty, Jessilyn Dunn, Ulf Ekelund, Peter T. Katzmarzyk, Karen Milton, Marie H. Murphy, Emmanuel Stamatakis

Population and Public Health Science Faculty Publications

No abstract provided.


Perceived Stress And Suicidal Ideation: The Role Of Dispositional Mindfulness, Emma H. Moscardini, Anthony Robinson, Jessica Gerner, Raymond P. Tucker Oct 2023

Perceived Stress And Suicidal Ideation: The Role Of Dispositional Mindfulness, Emma H. Moscardini, Anthony Robinson, Jessica Gerner, Raymond P. Tucker

Faculty Publications

Objectives: Extant literature suggests that dispositional mindfulness may reduce the impact perceived stress has on the severity of suicidal ideation (SI). Only one study has analyzed this question but did so with a cross-sectional design in a sample of undergraduate women. Methods: This study analyzed the potential moderating role of dispositional mindfulness on the relation between perceived stress and SI cross-sectionally and at one-week follow-up in a sample of US adults (N = 598) with a history of SI. Results: Results indicated that dispositional mindfulness and its facets were inversely related to perceived stress, SI severity at baseline, and SI …


Genetic Deletion Of Dnajb3 Using Crispr-Cas9, Produced Discordant Phenotypes, Shadi Nejat, Kalhara R. Menikdiwela, Aliyah Efotte, Shane Scoggin, Bolormaa Vandanmagsar, Paul J. Thornalley, Mohammed Dehbi, Naima Moustaid-Moussa Oct 2023

Genetic Deletion Of Dnajb3 Using Crispr-Cas9, Produced Discordant Phenotypes, Shadi Nejat, Kalhara R. Menikdiwela, Aliyah Efotte, Shane Scoggin, Bolormaa Vandanmagsar, Paul J. Thornalley, Mohammed Dehbi, Naima Moustaid-Moussa

Division of Basic Science Faculty Publications

Several pathways and/or genes have been shown to be dysregulated in obesity-induced insulin resistance (IR) and type 2 diabetes (T2D). We previously showed, for the first time, impaired expression of DNAJB3 mRNA and protein in subjects with obesity, which was concomitant with increased metabolic stress. Restoring the normal expression of DNAJB3 attenuated metabolic stress and improved insulin signaling both in vivo and in vitro, suggesting a protective role of DNAJB3 against obesity and T2D. The precise underlying mechanisms remained, however, unclear. This study was designed to confirm the human studies in a mouse model of dietary obesity-induced insulin resistance, and, …


Soluble Rage And Skeletal Muscle Tissue Rage Expression Profiles In Lean And Obese Young Adults Across Differential Aerobic Exercise Intensities, Edwin R. Miranda, Jacob T. Mey, Brian K. Blackburn, Alec B. Chaves, Kelly N.Z. Fuller, Ryan K. Perkins, Andrew T. Ludlow, Jacob M. Haus Oct 2023

Soluble Rage And Skeletal Muscle Tissue Rage Expression Profiles In Lean And Obese Young Adults Across Differential Aerobic Exercise Intensities, Edwin R. Miranda, Jacob T. Mey, Brian K. Blackburn, Alec B. Chaves, Kelly N.Z. Fuller, Ryan K. Perkins, Andrew T. Ludlow, Jacob M. Haus

Division of Basic Science Faculty Publications

Nearly 40% of Americans have obesity and are at increased risk for developing type 2 diabetes. Skeletal muscle is responsible for >80% of insulin-stimulated glucose uptake that is attenuated by the inflammatory milieu of obesity and augmented by aerobic exercise. The receptor for advanced glycation endproducts (RAGE) is an inflammatory receptor directly linking metabolic dysfunction with inflammation. Circulating soluble isoforms of RAGE (sRAGE) formed either by proteolytic cleavage (cRAGE) or alternative splicing (esRAGE) act as decoys for RAGE ligands, thereby counteracting RAGE-mediated inflammation. We aimed to determine if RAGE expression or alternative splicing of RAGE is altered by obesity in …


Recommendations From The 2023 International Evidence-Based Guideline For The Assessment And Management Of Polycystic Ovary Syndrome, Helena J. Teede, Chau Thien Tay, Joop Laven, Anuja Dokras, Lisa J. Moran, Terhi T. Piltonen, Michael F. Costello, Jacky Boivin, Leanne M. Redman, Jacqueline A. Boyle, Robert J. Norman, Aya Mousa, Anju E. Joham, Wiebke Arlt, Ricardo Azziz, Adam Balen, Lisa Bedson, Lorna Berry, Leah Brennan, Wendy Brown, Tania Burgert, Maureen Busby, Carolyn Ee, Rhonda M. Garad, Melanie Gibson-Helm, Cheryce Harrison, Roger Hart, Kim Hopkins, Angelica Lindén Hirschberg, Tuong Ho, Kathleen Hoeger, Cailin Jordan, Richard S. Legro, Rong Li Oct 2023

Recommendations From The 2023 International Evidence-Based Guideline For The Assessment And Management Of Polycystic Ovary Syndrome, Helena J. Teede, Chau Thien Tay, Joop Laven, Anuja Dokras, Lisa J. Moran, Terhi T. Piltonen, Michael F. Costello, Jacky Boivin, Leanne M. Redman, Jacqueline A. Boyle, Robert J. Norman, Aya Mousa, Anju E. Joham, Wiebke Arlt, Ricardo Azziz, Adam Balen, Lisa Bedson, Lorna Berry, Leah Brennan, Wendy Brown, Tania Burgert, Maureen Busby, Carolyn Ee, Rhonda M. Garad, Melanie Gibson-Helm, Cheryce Harrison, Roger Hart, Kim Hopkins, Angelica Lindén Hirschberg, Tuong Ho, Kathleen Hoeger, Cailin Jordan, Richard S. Legro, Rong Li

Clinical Research Faculty Publications

STUDY QUESTION: What is the recommended assessment and management of those with polycystic ovary syndrome (PCOS), based on the best available evidence, clinical expertise, and consumer preference? SUMMARY ANSWER: International evidence-based guidelines address prioritized questions and outcomes and include 254 recommendations and practice points, to promote consistent, evidence-based care and improve the experience and health outcomes in PCOS. WHAT IS KNOWN ALREADY: The 2018 International PCOS Guideline was independently evaluated as high quality and integrated multidisciplinary and consumer perspectives from six continents; it is now used in 196 countries and is widely cited. It was based on best available, but …


Environmentally Persistent Free Radicals: Methods For Combustion Generation, Whole-Body Inhalation And Assessing Cardiopulmonary Consequences, Ankit Aryal, Alexandra Noël, Lavrent Khachatryan, Stephania A. Cormier, Pratiti H. Chowdhury, Arthur Penn, Tammy R. Dugas, Ashlyn C. Harmon Oct 2023

Environmentally Persistent Free Radicals: Methods For Combustion Generation, Whole-Body Inhalation And Assessing Cardiopulmonary Consequences, Ankit Aryal, Alexandra Noël, Lavrent Khachatryan, Stephania A. Cormier, Pratiti H. Chowdhury, Arthur Penn, Tammy R. Dugas, Ashlyn C. Harmon

Division of Basic Science Faculty Publications

Particulate matter (PM) containing environmentally persistent free radicals (EPFRs) results from the incomplete combustion of organic wastes which chemisorb to transition metals. This process generates a particle-pollutant complex that continuously redox cycles to produce reactive oxygen species. EPFRs are well characterized, but their cardiopulmonary effects remain unknown. This publication provides a detailed approach to evaluating these effects and demonstrates the impact that EPFRs have on the lungs and vasculature. Combustion-derived EPFRs were generated (EPFR lo: 2.1e−16 radical/g, EPFR hi: 5.5e−17 radical/g), characterized, and verified as representative of those found in urban areas. Dry particle aerosolization and whole-body inhalation were established …


Recruitment Methods And Yield Rates For A Multisite Clinical Trial Exploring Risk Reduction For Alzheimer's Disease (Rrad), Amanda N. Szabo-Reed, Tristyn Hall, Eric D. Vidoni, Angela Van Sciver, Monica Sewell, Jeffrey M. Burns, C. Munro Cullum, William P. Gahan, Linda S. Hynan, Diana R. Kerwin, Heidi Rossetti, Ann M. Stowe, Wanpen Vongpatanasin, David C. Zhu, Rong Zhang, Jeffrey N. Keller, Ellen F. Binder Oct 2023

Recruitment Methods And Yield Rates For A Multisite Clinical Trial Exploring Risk Reduction For Alzheimer's Disease (Rrad), Amanda N. Szabo-Reed, Tristyn Hall, Eric D. Vidoni, Angela Van Sciver, Monica Sewell, Jeffrey M. Burns, C. Munro Cullum, William P. Gahan, Linda S. Hynan, Diana R. Kerwin, Heidi Rossetti, Ann M. Stowe, Wanpen Vongpatanasin, David C. Zhu, Rong Zhang, Jeffrey N. Keller, Ellen F. Binder

Clinical Research Faculty Publications

INTRODUCTION: The risk reduction for Alzheimer's disease (rrAD) trial was a multisite clinical trial to assess exercise and intensive vascular pharmacological treatment on cognitive function in community-dwelling older adults at increased risk for Alzheimer's disease. METHODS: Eligibility, consent, and randomization rates across different referral sources were compared. Informal interviews conducted with each site's project team were conducted upon study completion. RESULTS: Initially, 3290 individuals were screened, of whom 28% were eligible to consent, 805 consented to participate (87.2% of those eligible), and 513 (36.3% of those consented) were randomized. Emails sent from study site listservs/databases yielded the highest amount (20.9%) …


Impact Of A Nutrient Formulation On Longitudinal Myelination, Cognition, And Behavior From Birth To 2 Years: A Randomized Clinical Trial, Nora Schneider, Mickaël Hartweg, Jonathan O’Regan, Jennifer Beauchemin, Leanne Redman, Daniel S. Hsia, Pascal Steiner, Owen Carmichael, Viren D’Sa, Sean Deoni Oct 2023

Impact Of A Nutrient Formulation On Longitudinal Myelination, Cognition, And Behavior From Birth To 2 Years: A Randomized Clinical Trial, Nora Schneider, Mickaël Hartweg, Jonathan O’Regan, Jennifer Beauchemin, Leanne Redman, Daniel S. Hsia, Pascal Steiner, Owen Carmichael, Viren D’Sa, Sean Deoni

Clinical Research Faculty Publications

Observation studies suggest differences in myelination in relation to differences in early life nutrition. This two-center randomized controlled trial investigates the effect of a 12-month nutritional intervention on longitudinal changes in myelination, cognition, and behavior. Eighty-one full-term, neurotypical infants were randomized into an investigational (N = 42) or a control group (N = 39), receiving higher versus lower levels of a blend of nutrients. Non-randomized breastfed infants (N = 108) served as a reference group. Main outcomes were myelination (MRI), neurodevelopment (Bayley-III), social-emotional development (ASQ:SE-2), infant and toddler behavior (IBQ-R and TBAQ), and infant sleep (BISQ) during the first 2 …


Toward Food Security In 2050: Gene Pyramiding For Climate-Smart Rice, Isnaini Isnaini, Yudhistira Nugraha, Niranjan Baisakh, Nono Carsono Oct 2023

Toward Food Security In 2050: Gene Pyramiding For Climate-Smart Rice, Isnaini Isnaini, Yudhistira Nugraha, Niranjan Baisakh, Nono Carsono

Faculty Publications

The decline in crop productivity due to climate change is a major issue that threatens global food security and is the main challenge for breeders today in developing sustainable varieties with a wider tolerance to abiotic and biotic stresses. Breeding climate-smart rice (CSR) cultivars may be the best adaptation to climate change, with the potential to improve future food security and profitability for farmers in many nations. The main objective of this review is to highlight the direction of development of superior rice breeding from time to time, and various studies of new techniques of breeding methods for pyramiding various …


Reevaluation Of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin Equivalency Factors For Dioxin-Like Polychlorinated Dibenzo-P-Dioxins, Polychlorinated Dibenzofurans, And Polychlorinated Biphenyls For Fishes, Jon A. Doering, Donald E. Tillitt, Steve Wiseman Oct 2023

Reevaluation Of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin Equivalency Factors For Dioxin-Like Polychlorinated Dibenzo-P-Dioxins, Polychlorinated Dibenzofurans, And Polychlorinated Biphenyls For Fishes, Jon A. Doering, Donald E. Tillitt, Steve Wiseman

Faculty Publications

An expert meeting was organized by the World Health Organization (WHO) in 1997 to streamline assessments of risk posed by mixtures of dioxin-like chemicals (DLCs) through development of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) equivalency factors (TEFs) for mammals, birds, and fishes. No reevaluation has been performed for fish TEFs. Therefore, the objective of the present study was to reevaluate the TEFs for fishes based on an updated database of relative potencies (RePs) for DLCs. Selection criteria consistent with the WHO meeting resulted in 53 RePs across 14 species of fish ultimately being considered. Of these RePs, 70% were not available at the time …


Deep Multimessenger Search For Compact Binary Mergers In Ligo, Virgo, And Fermi/Gbm Data From 2016-2017, Marion Pillas, Tito Dal Canton, Cosmin Stachie, Brandon Piotrzkowski, Fergus Hayes, Rachel Hamburg, Eric Burns, Joshua Wood, Pierre Alexandre Duverne, Nelson Christensen Oct 2023

Deep Multimessenger Search For Compact Binary Mergers In Ligo, Virgo, And Fermi/Gbm Data From 2016-2017, Marion Pillas, Tito Dal Canton, Cosmin Stachie, Brandon Piotrzkowski, Fergus Hayes, Rachel Hamburg, Eric Burns, Joshua Wood, Pierre Alexandre Duverne, Nelson Christensen

Faculty Publications

GW170817-GRB 170817A provided the first observation of gravitational waves from a neutron star merger with associated transient counterparts across the entire electromagnetic spectrum. This discovery demonstrated the long-hypothesized association between short gamma-ray bursts and neutron star mergers. More joint detections are needed to explore the relation between the parameters inferred from the gravitational wave and the properties of the gamma-ray burst signal. We developed a joint multimessenger analysis of LIGO, Virgo, and Fermi/GBM data designed for detecting weak gravitational-wave transients associated with weak gamma-ray bursts. As such, it does not start from confident (GWTC-1) events only. Instead, we take the …


Engineering Super-Poissonian Photon Statistics Of Spatial Light Modes, Mingyuan Hong, Ashe Miller, Roberto De J. León-Montiel, Chenglong You, Omar S. Magaña-Loaiza Oct 2023

Engineering Super-Poissonian Photon Statistics Of Spatial Light Modes, Mingyuan Hong, Ashe Miller, Roberto De J. León-Montiel, Chenglong You, Omar S. Magaña-Loaiza

Faculty Publications

The nature of light sources is defined by the statistical fluctuations of the electromagnetic field. As such, the photon statistics of light sources are typically associated with distinct emitters. Here, the possibility of producing light beams with various photon statistics through the spatial modulation of coherent light is demonstrated. This is achieved by the sequential encoding of controllable Kolmogorov phase screens in a digital micromirror device. Interestingly, the flexibility of this scheme allows for the shaping of spatial light modes with engineered photon statistics at different spatial positions. The performance of this scheme is assessed through the photon-number-resolving characterization of …


Kmt-2021-Blg-1547lb: Giant Microlensing Planet Detected Through A Signal Deformed Due To Source Binarity, Cheongho Han, Weicheng Zang, Youn Kil Jung, Ian A. Bond, Sun Ju Chung, Michael D. Albrow, Andrew Gould, Kyu Ha Hwang, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Sang Mok Cha, Doeon Kim, Dong Jin Kim, Seung Lee Kim, Chung Uk Lee, Dong Joo Lee, Yongseok Lee, Byeong Gon Park, Richard W. Pogge, Berto Monard, Qiyue Qian, Zhuokai Liu, Dan Maoz, Matthew T. Penny, Wei Zhu, Fumio Abe, Richard Barry, David P. Bennett, Aparna Bhattacharya, Hirosame Fujii Oct 2023

Kmt-2021-Blg-1547lb: Giant Microlensing Planet Detected Through A Signal Deformed Due To Source Binarity, Cheongho Han, Weicheng Zang, Youn Kil Jung, Ian A. Bond, Sun Ju Chung, Michael D. Albrow, Andrew Gould, Kyu Ha Hwang, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Sang Mok Cha, Doeon Kim, Dong Jin Kim, Seung Lee Kim, Chung Uk Lee, Dong Joo Lee, Yongseok Lee, Byeong Gon Park, Richard W. Pogge, Berto Monard, Qiyue Qian, Zhuokai Liu, Dan Maoz, Matthew T. Penny, Wei Zhu, Fumio Abe, Richard Barry, David P. Bennett, Aparna Bhattacharya, Hirosame Fujii

Faculty Publications

Aims. We investigate the previous microlensing data collected by the KMTNet survey in search of anomalous events for which no precise interpretations of the anomalies had been suggested. From this investigation, we find that the anomaly in the lensing light curve of the event KMT-2021-BLG-1547 is approximately described by a binary-lens (2L1S) model with a lens possessing a giant planet, but the model leaves unexplained residuals. Methods. We investigated the origin of the residuals by testing more sophisticated models that include either an extra lens component (3L1S model) or an extra source star (2L2S model) on top of the 2L1S …


Association Of Prolactin With All-Cause And Cardiovascular Mortality Among Patients With Type 2 Diabetes: A Real-World Study, Yun Shen, Qing Yang, Tingting Hu, Yaxin Wang, Lei Chen, Fei Gao, Wei Zhu, Gang Hu, Jian Zhou, Chunfang Wang, Yuqian Bao Oct 2023

Association Of Prolactin With All-Cause And Cardiovascular Mortality Among Patients With Type 2 Diabetes: A Real-World Study, Yun Shen, Qing Yang, Tingting Hu, Yaxin Wang, Lei Chen, Fei Gao, Wei Zhu, Gang Hu, Jian Zhou, Chunfang Wang, Yuqian Bao

Population and Public Health Science Faculty Publications

Aims The association between prolactin and mortality has been less studied, and findings were inconsistent among different populations. We aimed to investigate the association between serum prolactin (PRL) and mortality among patients with type 2 diabetes. Methods We performed a retrospective cohort study of 10 907 patients with at least 2 prolactin measurements within 2 years since and results their first inpatient diagnosis of type 2 diabetes. Baseline and mean values of serum PRL were used as exposures. A multivariable-adjusted Cox proportional hazards model was used to estimate the association between PRL and mortality. During a mean follow-up of 5.34 …


Deficiency Of Healthcare Accessibility Of Elderly People Exposed To Future Extreme Coastal Floods: A Case Study Of Shanghai, China, Xinmeng Shan, Paolo Scussolini, Jun Wang, Mengya Li, Jiahong Wen, Lei Wang Oct 2023

Deficiency Of Healthcare Accessibility Of Elderly People Exposed To Future Extreme Coastal Floods: A Case Study Of Shanghai, China, Xinmeng Shan, Paolo Scussolini, Jun Wang, Mengya Li, Jiahong Wen, Lei Wang

Faculty Publications

Socioeconomic development, subsidence, and climate change have led to high flood risks in coastal cities, making the vulnerable, especially elderly people, more prone to floods. However, we mostly do not know how the accessibility of life-saving public resources for the elderly population will change under future scenarios. Using Shanghai as a case, this study introduced a new analytical framework to fill this gap. We integrated for the first time models of coastal flooding, local population growth, and medical resource supply-demand estimation. The results show that under an extreme scenario of coastal flooding in the year 2050, in the absence of …


Machine-Learning-Based Thermal Conductivity Prediction For Additively Manufactured Alloys, Uttam Bhandari, Yehong Chen, Huan Ding, Congyuan Zeng, Selami Emanet, Paul R. Gradl, Shengmin Guo Oct 2023

Machine-Learning-Based Thermal Conductivity Prediction For Additively Manufactured Alloys, Uttam Bhandari, Yehong Chen, Huan Ding, Congyuan Zeng, Selami Emanet, Paul R. Gradl, Shengmin Guo

Faculty Publications

Thermal conductivity (TC) is greatly influenced by the working temperature, microstructures, thermal processing (heat treatment) history and the composition of alloys. Due to computational costs and lengthy experimental procedures, obtaining the thermal conductivity for novel alloys, particularly parts made with additive manufacturing, is difficult and it is almost impossible to optimize the compositional space for an absolute targeted value of thermal conductivity. To address these difficulties, a machine learning method is explored to predict the TC of additive manufactured alloys. To accomplish this, an extensive thermal conductivity dataset for additively manufactured alloys was generated for several AM alloy families (nickel, …


The Standard For Assessing Water Resistance Properties Of Lubricating Grease Using Contact Angle Measurements, Koottaparambil Lijesh, Roger A. Miller, Raj Shah, Khosro Shirvani, Michael M. Khonsari Oct 2023

The Standard For Assessing Water Resistance Properties Of Lubricating Grease Using Contact Angle Measurements, Koottaparambil Lijesh, Roger A. Miller, Raj Shah, Khosro Shirvani, Michael M. Khonsari

Faculty Publications

Many grease-lubricated machines operate in wet environments, and are vulnerable to contamination because of water exposure. Reports suggest that even the presence of 1% water in grease reduces the life of a bearing by 90%. Nevertheless, only a few qualitative tests and standards are available to characterize the water resistance properties of greases. In this paper, we propose a standard for evaluating the water resistance properties of greases by studying their hydrophobic and hydrophilic nature via a custom-designed apparatus for measuring the grease contact angle. In this approach, a water droplet is dispensed onto the surface of the grease and …


In Situ Prediction Of Metal Fatigue Life Using Frequency Change, Ali Mahmoudi, Mohammad A. Amooie, Lijesh Koottaparambil, Michael M. Khonsari Oct 2023

In Situ Prediction Of Metal Fatigue Life Using Frequency Change, Ali Mahmoudi, Mohammad A. Amooie, Lijesh Koottaparambil, Michael M. Khonsari

Faculty Publications

A reliable technique for rapid prediction of the remaining useful life (RUL) of components experiencing fatigue degradation is introduced. The approach is based on measuring the temperature signature of a component upon rapidly changing its operating frequency for a short period of time. The temperature variations caused by alterations in plastic work rate are correlated to the loading history. The efficacy of the approach is investigated by conducting a series of axial fatigue tests on stainless steel 316 specimens. The material characterization involves subjecting the material to a constant amplitude fatigue load at 4 Hz and 12 Hz frequencies. The …


Coupled Wellbore-Reservoir Modelling To Evaluate Co2 Injection Rate Distribution Over Thick Multilayer Storage Zones, Mohamed Abdelaal, Mehdi Zeidouni Oct 2023

Coupled Wellbore-Reservoir Modelling To Evaluate Co2 Injection Rate Distribution Over Thick Multilayer Storage Zones, Mohamed Abdelaal, Mehdi Zeidouni

Faculty Publications

Technical and economic feasibility of Geologic CO2 Storage (GCS) projects requires maximizing the amount of stored CO2 per unit pore space of the storage zone per well. Considering injection through a fully penetrating vertical well in a multi-layer thick aquifer, CO2 would be unevenly distributed over the aquifer thickness, underutilizing the available pore space. In this work, we use coupled wellbore-reservoir modelling to investigate the interplay between the parameters that control CO2 pore-space filling. Flow capacity profile and gravity/buoyancy override are the primary factors controlling CO2 flux into a layered system. In addition, a higher fraction of CO2 would flow …


Weakly Forced Thunderstorms In The Southeast Us Are Stronger Near Urban Areas, P. Miller, N. Debbage Sep 2023

Weakly Forced Thunderstorms In The Southeast Us Are Stronger Near Urban Areas, P. Miller, N. Debbage

Faculty Publications

While cities are well documented to enhance precipitation through the urban rainfall effect (URE), the distinguishing characteristics of urban-influenced storms that help establish the URE are poorly understood. The purpose of this study is to examine the morphological traits (i.e., size, duration, intensity, etc.) and near-storm environmental conditions of weakly forced thunderstorms (WFTs) occurring near urban areas in the Southeast US relative to storms forming in surrounding rural areas. Urban WFTs are found to have higher reflectivities, are more likely to contain hail, and produce more lightning than nearby non-urban storms, but their sizes and shapes are statistically indistinguishable. When …


Patient Specific Normalized Glandular Dose Range Estimate For Mammography, Lacey Medlock Sep 2023

Patient Specific Normalized Glandular Dose Range Estimate For Mammography, Lacey Medlock

LSU Master's Theses

Breast cancer is the most common type of cancer among women in the United States. It is also the second leading cause of death by cancer among women in the United States. Early detection is key to preventing fatalities. There are over 39 million mammography screening procedures performed yearly [3]. We know that exposure to radiation, including in routine mammography, may induce secondary cancers [4]. Thus, it is important to be able to accurately estimate the dose delivered to a patient during breast cancer screening. The dose delivered to a patient is regulated in the US and in many other …


Greater Male Variability In Daily Energy Expenditure Develops Through Puberty, Lewis G. Halsey, Vincent Careau, Philip N. Ainslie, Heliodoro Alemán-Mateo, Lene F. Andersen, Liam J. Anderson, Leonore Arab, Issad Baddou, Linda Bandini, Kweku Bedu-Addo, Ellen E. Blaak, Stephane Blanc, Alberto G. Bonomi, Carlijn V.C. Bouten, Pascal Bovet, Soren Brage, Maciej S. Buchowski, Nancy Butte, Stephan G. Camps, Regian Casper, Graeme L. Close, Lisa H. Colbert, Jamie A. Cooper, Richard Cooper, Prasangi Dabare, Sai Krupa Das, Peter S.W. Davies, Sanjoy Deb, Christine Delisle Nyström, William Dietz, Lara R. Dugas, Simon Eaton, Ulf Ekelund Sep 2023

Greater Male Variability In Daily Energy Expenditure Develops Through Puberty, Lewis G. Halsey, Vincent Careau, Philip N. Ainslie, Heliodoro Alemán-Mateo, Lene F. Andersen, Liam J. Anderson, Leonore Arab, Issad Baddou, Linda Bandini, Kweku Bedu-Addo, Ellen E. Blaak, Stephane Blanc, Alberto G. Bonomi, Carlijn V.C. Bouten, Pascal Bovet, Soren Brage, Maciej S. Buchowski, Nancy Butte, Stephan G. Camps, Regian Casper, Graeme L. Close, Lisa H. Colbert, Jamie A. Cooper, Richard Cooper, Prasangi Dabare, Sai Krupa Das, Peter S.W. Davies, Sanjoy Deb, Christine Delisle Nyström, William Dietz, Lara R. Dugas, Simon Eaton, Ulf Ekelund

Faculty Publications

There is considerably greater variation in metabolic rates between men than between women, in terms of basal, activity and total (daily) energy expenditure (EE). One possible explanation is that EE is associated with male sexual characteristics (which are known to vary more than other traits) such as musculature and athletic capacity. Such traits might be predicted to be most prominent during periods of adolescence and young adulthood, when sexual behaviour develops and peaks. We tested this hypothesis on a large dataset by comparing the amount of male variation and female variation in total EE, activity EE and basal EE, at …


End Block Dynamics In Unentangled Polymers By Dielectric Spectroscopy, Mengchun Wu, Karin J. Bichler, Bruno Jakobi, Alyssa Grzesiowski, Gerald J. Schneider Sep 2023

End Block Dynamics In Unentangled Polymers By Dielectric Spectroscopy, Mengchun Wu, Karin J. Bichler, Bruno Jakobi, Alyssa Grzesiowski, Gerald J. Schneider

Faculty Publications

Dielectric spectroscopy measures the dynamics of polymer melts over a broad frequency range. Developing a theory for the spectral shape can extend the analysis of dielectric spectra beyond determining relaxation times from the peak maxima and adds physical meaning to shape parameters determined with empirical fit functions. Toward this goal, we use the experimental results on unentangled poly(isoprene), and unentangled poly(butylene oxide), polymer melts, to test whether the concept of end blocks could be one reason for the Rouse model deviating from experimental data. These end blocks have been suggested by simulations and neutron spin echo spectroscopy and are a …