Digital Commons Network^™

The Hoof Inside Out: A Comprehensive Investigation About The Shoe Configuration Effects On The Behavior Of The Equine Hoof, Rita Aoun

LSU Doctoral Dissertations

The equine hoof is a unique organ in biology that has intricate elastic properties. From simple protection to therapeutic and corrective measures, horseshoes are widely used in the equine industry. Various types of shoeing have been designed and used based on their unique targeted functions following hoof care. Shoes can modify the gait of the horse, affect the alignment of the distal joints, and alter stress and strains on specific hoof regions. The objective of this dissertation is to provide an overview of the available research on the existing methodology and literature on the effects of shoeing on equine gait …

The Ring-Closing Reaction Of Cyclopentadiene Probed With Ultrafast X-Ray Scattering, Lisa Huang, Lauren Bertram, Lingyu Ma, Nathan Goff, Stuart W. Crane, Asami Odate, Thomas Northey, Andrés Moreno Carrascosa, Mats Simmermacher, Sri Bhavya Muvva, Joseph D. Geiser, Matthew J. Lueckheide, Zane Phelps, Mengning Liang, Xinxin Cheng, Ruaridh Forbes, Joseph S. Robinson, Matthew J. Hayes, Felix Allum, Alice E. Green, Kenneth Lopata, Artem Rudenko, Thomas J.A. Wolf, Martin Centurion, Daniel Rolles, Michael P. Minitti, Adam Kirrander, Peter M. Weber

Faculty Publications

The dynamics of cyclopentadiene (CP) following optical excitation at 243 nm was investigated by time-resolved pump-probe X-ray scattering using 16.2 keV X-rays at the Linac Coherent Light Source (LCLS). We present the first ultrafast structural evidence that the reaction leads directly to the formation of bicyclo[2.1.0]pentene (BP), a strained molecule with three- and four-membered rings. The bicyclic compound decays via a thermal backreaction to the vibrationally hot CP with a time constant of 21 ± 3 ps. A minor channel leads to ring-opened structures on a subpicosecond time scale.

A Multivariate Statistical Approach For Mineral Geographic Provenance Determination Using Laser-Induced Breakdown Spectroscopy And Electron Microprobe Chemical Data: A Case Study Of Copper-Bearing Tourmalines, Barbara L. Dutrow, Nancy J. Mcmillan, Darrell J. Henry

Faculty Publications

The geographic provenance of minerals provides key insights into a range of geologic problems, including the source of gem materials. The tourmaline supergroup is unparalleled in its ability to record and preserve extensive chemical signatures of its formational environment. To evaluate the likelihood that tourmalines of similar compositions from separate geographic localities could be differentiated, a multivariate statistical approach has been utilized on two complementary data sets. These chemical analytical data sets of copper-bearing "Paraiba"tourmaline include data sets acquired with Laser Induced Breakdown Spectroscopy (LIBS) and electron microprobe analysis (EMPA). Fifty-four samples of copper-bearing tourmalines from known source locations from …

Factors Associated With Functioning In Older Black Adults, Katrail D. Davis

LSU Master's Theses

Activities of daily living can be simple tasks such as bathing, showering, toileting or as complex as managing finances, driving, and preparing meals. Independence in everyday functioning has been associated with successful aging and declines in functioning may be indicative of pathological cognitive decline. Social determinants of health, like economic status and access to health care, also play a role in everyday functioning. Understanding these factors are of particular importance for older Black adults who have had long-standing disparate access to care, education, and treatments. The current study aimed to evaluate social determinants of health, more specifically social engagement, as …

Családi, Joelle Nagy

LSU Master's Theses

Családi (Magyar/Hungarian) adjective: related to the family; related to the home

CSALÁDI is a compendium of paintings and sculpture that narrate and itemize memories, mementos, and feelings from my childhood in relation to the home. It is an autobiographical agglomeration of objects and spaces that I am honoring and remembering through the act of creating. I am effectuating the feminine and maternal instinct of gathering and arranging my memories pertaining to personal history and inherited cultural identity through altar-making. Idiosyncratic items are collected and bound through color association and sensory memory. Constructing interior and exterior spaces of the home in …

Potential Modifying Effect Of Grip Strength On The Association Between Glycated Hemoglobin (Hba1c) And All-Cause Mortality In Older Adults With Type 2 Diabetes: Evidence From Uk Biobank, Jingyi Lu, Yaxin Wang, Yun Shen, Yifei Mo, Xiaojing Ma, Gang Hu, Jian Zhou

Population and Public Health Science Faculty Publications

No abstract provided.

The Impact Of Social Stress And Alcohol Intoxication On Cognitive Processes Among College Students With Heavy Episodic Drinking, Caroline R. Scherzer

LSU Master's Theses

College students with high social anxiety and heavy episodic drinking appear to consume alcohol more frequently and at greater quantities, presumably because individuals with higher trait social anxiety may be more responsive to the stress-response dampening effects of alcohol in social contexts due to appraisal disruption and activation of implicit social cognitions. However, little work has tested this hypothesis within a controlled lab-based setting. The current study tested whether the sequence of alcohol intoxication and induction of an anticipatory social stressor interacts with trait social anxiety to predict changes in anticipatory social anxiety, craving, implicit drinking identity, and implicit self-esteem. …

Analogues Of Jacobi And Weyl Theorems For Infinite-Dimensional Tori, Vsevolod Sakbaev, Igor Volovich

Journal of Stochastic Analysis

No abstract provided.

Speculative Telephone: Oral Historians And Digital Librarians On How Libraries Could Be, Kae Kratcha

Journal of Critical Digital Librarianship

In the summer of 2023, librarian and oral historian Kae Bara Kratcha interviewed three oral historians about their relationships to libraries and their dreams for what digital libraries could be. Then they played portions of each oral historian interview for a digital librarian and asked the librarian to speculate about what their jobs and lives would be like if they implemented the oral historians' ideas about digital libraries. “Speculative Telephone: Oral Historians and Digital Librarians on How Libraries Could Be” is eleven edited audio tracks of wide-ranging conversation on topics like public space, online communities, library anxiety, relationships with library …

Let Us Fail: Speculative Futures And Digital Librarianship, Natalia Estrada, Kristina Bush, Stacy Snyder

Journal of Critical Digital Librarianship

Let Us Fail explores what digital librarianship work might look like if digital library workers were not tied to the technology, infrastructure, or work culture of academia that we currently experience. We explore what work could look like if we were given the agency to play and be creative, support to learn from failure, and freedom from traditional assessment metrics. This podcast dreams about a future in which digital library workers are self-directed, autonomous workers with the capacity to explore, experiment, and iterate.

To stream each episode of this podcast, navigate to JCDL volume 0, issue 2 and click on …

Desire Paths In The Information Landscape, Victoria Van Hyning, Mason A. Jones, Travis Wagner

Journal of Critical Digital Librarianship

Libraries and archives serve so many different users who come to information institutions with various perspectives, needs, experiences, and desires around accessing physical or digital collections. While our users may find what they are looking for immediately, many have to beat their own paths through complex systems and metadata that doesn’t align with their needs. Their search strategies may leave digital “desire paths”–alternative routes through the information landscape that can show us how to better meet their needs. This article covers three scenarios where users’ desire paths can be seen or where gaps around user experience can be better addressed. …

The Product Of Distributions And Stochastic Differential Equations Arising From Powers Of Infinite Dimensional Brownian Motions, Un Cig Ji, Hui-Hsiung Kuo, Hara-Yuko Mimachi, Kimiaki Saitô

Journal of Stochastic Analysis

No abstract provided.

A Microfluidic Approach To Study Variations In Chlamydomonas Reinhardtii Alkaline Phosphatase Activity In Response To Phosphate Availability, Alireza Rahnama, Manibarathi Vaithiyanathan, Luis Briceno-Mena, Travis M. Dugas, Kelly L. Yates, Jose A. Romagnoli, Adam T. Melvin

Faculty Publications

Algal growth depends strongly on phosphorus (P) as a key nutrient, underscoring the significance of monitoring P levels. Algal species display a sensitive response to fluctuations in P availability, notably through the expression of alkaline phosphatase (AP) when challenged with P-depletion. As such, alkaline phosphatase activity (APA) serves as a valuable metric for P availability, offering insights into how algae utilize and fix available P resources. However, current APA quantification methods lack single cell resolution, while also being time- and reagent consuming. Microfluidics offers a promising cost-effective solution to these limitations, providing a platform for precise single-cell analysis. In this …

Editors' Introduction, Leah Powell Duncan, Janina Mueller, Rachel Starry, Sl Ziegler, Emily M. Zinger

Journal of Critical Digital Librarianship

Editors' Introduction. Special Issue, "Turning it Off and Back On Again: Speculative Digital Librarianship"

The Effects Of High-Pressure Annealing On Magnetostructural Transitions And Magnetoresponsive Properties In Stoichiometric Mncoge, Tej Poudel Chhetri, Jing Han Chen, David P. Young, Igor Dubenko, Saikat Talapatra, Naushad Ali, Shane Stadler

Faculty Publications

In this study, phase transitions (structural and magnetic) and associated magnetocaloric properties of stoichiometric MnCoGe have been investigated as a function of annealing pressure. Metastable phases were generated by annealing at 800 ° C followed by rapid cooling under pressures up to 6.0 GPa. The x-ray diffraction results reveal that the crystal cell volume of the metastable phases continuously decreases with increasing thermal processing pressure, leading to a decrease in the structural transition temperature. The magnetic and structural transitions merge and form a first-order magnetostructural transition between the ferromagnetic orthorhombic and paramagnetic hexagonal phases over a broad temperature range ( …

Spatial And Temporal Distribution Of Juvenile Gulf Sturgeon In The Pearl River, Louisiana, And Adjacent Estuaries Of The Gulf Of Mexico, Ashley M. Baer, Glenn C. Constant, Kayla D. Kimmel, Michael A. Dance, Jenna N. Brogdon

Faculty Publications

Objective: Acoustic telemetry was used to examine the spatial-temporal distribution and anadromous migration pattern of juvenile Gulf Sturgeon Acipenser desotoi within the Pearl River and associated coastal estuaries of Louisiana and Mississippi. Methods: Acoustic transmitters were surgically implanted in 52 juvenile Gulf Sturgeon (< 890 mm fork length) from the Pearl River between 2016 and 2019. Sturgeon were monitored on 247 acoustic receivers in the lower Pearl River and adjacent estuaries across numerous partnering arrays. Result: Juveniles were detected on receivers from Lake Pontchartrain, Louisiana, east to Bay St. Louis, and Biloxi Bay, Mississippi. The 3-year study found that juvenile Gulf Sturgeon migration in the Pearl River occurred on cycles similar to those reported from other populations. Juveniles were rarely observed in the estuary and nearshore marine environments from May through mid-October of each year, during which time most sturgeon inhabited the Pearl River. Conversely, most of the juveniles inhabited coastal estuaries from December through February of each year and were rarely observed in freshwater environments during this period. Migration from the river into the estuary occurred during late-October through November, and migration from the estuary into the river occurred in March and April. Distribution patterns varied spatially within the river and estuary ecosystems during each phase of migration. Tagged juveniles occupied the lowest 40 km of the Pearl River while in freshwater, and they occupied the northeastern shoreline of Lake Pontchartrain and Bay St. Louis while in the estuary. Interestingly, juveniles seemed to target specific areas in the estuary during winter that were farther away from the mouth of natal rivers than has been previously reported. Conclusion: This study provides a new assessment of juvenile Gulf Sturgeon migration and seasonal distribution for the Pearl River and provides important information for designing and assessing the potential benefits and challenges of habitat restoration for Gulf Sturgeon.

Age, Growth, And Mortality Of Blackfin Tuna In The Gulf Of Mexico, E. M. Gutierrez, E. T. Lang, M. S. Lovell, J. Lang, B. J. Falterman, S. R. Midway, M. A. Dance

Faculty Publications

Objective: An otolith-based aging approach was used to evaluate age and growth relationships, sexual dimorphism in growth, and derive mortality estimates for Blackfin Tuna Thunnus atlanticus in the Gulf of Mexico (GOM). Methods: Blackfin Tuna (n = 395) were sampled from recreational fisheries and aged from 0 to 13 years, representing an increase over previous estimates of longevity for the species. Result: Rapid growth was exhibited during the first two years of life, and the Richards growth function provided a better fit (L∞ = 907 mm, k = 0.112 /year, a = 1.05, b = 0.25) to the data compared …

Maternal 24-H Movement Patterns Across Pregnancy And Postpartum: The Life-Moms Consortium, Chelsea L. Kracht, Kimberly L. Drews, Emily W. Flanagan, Sarah K. Keadle, Dympna Gallagher, Linda Van Horn, Debra Haire-Joshu, Suzanne Phelan, Jeremy Pomeroy, Leanne M. Redman

Clinical Research Faculty Publications

Objective: Time spent among the 24-h movement behaviors (physical activity [PA], sleep, sedentary behavior [SB]) in the perinatal period is important for maternal and child health. We described changes to 24-h movement behaviors and behavior guideline attainment during pregnancy and postpartum and identified correlates of behavior changes. Methods: This secondary data analysis included the standard of care group (n = 439) from the U.S.-based Lifestyle Interventions For Expectant Moms (LIFE-Moms) consortium, including persons with overweight and obesity. Wrist-worn accelerometry was used to measure movement behaviors early (9–15 weeks) and late (35–36 weeks) pregnancy, and ∼ 1-year postpartum. Sleep and moderate-to-vigorous …

Adaptive Phase I–Ii Clinical Trial Designs Identifying Optimal Biological Doses For Targeted Agents And Immunotherapies, Yong Zang, Beibei Guo, Yingjie Qiu, Hao Liu, Mateusz Opyrchal, Xiongbin Lu

Faculty Publications

Targeted agents and immunotherapies have revolutionized cancer treatment, offering promising options for various cancer types. Unlike traditional therapies the principle of “more is better” is not always applicable to these new therapies due to their unique biomedical mechanisms. As a result, various phase I–II clinical trial designs have been proposed to identify the optimal biological dose that maximizes the therapeutic effect of targeted therapies and immunotherapies by jointly monitoring both efficacy and toxicity outcomes. This review article examines several innovative phase I–II clinical trial designs that utilize accumulated efficacy and toxicity outcomes to adaptively determine doses for subsequent patients and …

Consumer Engagement In Fashion Circularity In China: Exploring Consumer Online Fashion Resale Through The Lens Of Social Practice Theory, Sujun Liu, Chuanlan Liu, Chunmin Lang

Faculty Publications

Fashion resale has emerged as a notable strategy for the fashion industry to reduce its environmental footprint by promoting fashion circularity. Despite extensive research on consumer awareness of resale and the purchase of pre-owned items, there remains a gap in understanding the factors that influence consumers’ participation in resale markets, encompassing both selling and buying practices. Drawing on social practice theory (SPT), this qualitative study examines the nuanced factors influencing consumers’ online resale practices and investigates how online fashion resale practices (OFRPs) have become integrated into their daily consumption patterns. In-depth interviews were conducted with thirty experienced Chinese consumers engaged …

Pea Leaf Weevil, Sitona Lineatus (L.) (Coleoptera: Curculionidae), Adult Feeding Preference And Larval Development On Pulse Crop Varieties In Montana, Pragya Kiju, Kevin W. Wanner, Michael Ivie, Kevin Mcphee, Gadi V.P. Reddy

Faculty Publications

BACKGROUND: Montana accounts for approximately 45% of US dry pea production and the pea leaf weevil (PLW; Sitona lineatus (L.)) is the most common insect pest in this region. After crop emergence adult PLW feed on the foliage to mature and subsequently mate, and the soil-dwelling larvae feed and develop on the nitrogen-fixing root nodules. Producers commonly apply prophylactic insecticide treatments to the seed at planting as well as one or two post-emergent insecticide sprays to control PLW damage. To develop alternative management strategies based on integrated pest management (IPM), this field study evaluated pulse crops grown in Montana for …

Recycling Functional Fillers From Waste Tires For Tailored Polystyrene Composites: Mechanical, Fire Retarding, Electromagnetic Field Shielding, And Acoustic Insulation Properties—A Short Review, Jinlong Zhang, Hang Liu, Shyam S. Sablani, Qinglin Wu

Faculty Publications

Polymer waste is currently a big and challenging issue throughout the world. Waste tires represent an important source of polymer waste. Therefore, it is highly desirable to recycle functional fillers from waste tires to develop composite materials for advanced applications. The primary theme of this review involves an overview of developing polystyrene (PS) composites using materials from recycled tires as fillers; waste tire recycling in terms of ground tire rubbers, carbon black, and textile fibers; surface treatments of the fillers to optimize various composite properties; and the mechanical, fire retarding, acoustic, and electromagnetic field (EMI) shielding performances of PS composite …

Hepatic Interoception In Health And Disease, Hans Rudolf Berthoud, Heike Münzberg, Christopher D. Morrison, Winfried L. Neuhuber

Division of Basic Science Faculty Publications

The liver is a large organ with crucial functions in metabolism and immune defense, as well as blood homeostasis and detoxification, and it is clearly in bidirectional communication with the brain and rest of the body via both neural and humoral pathways. A host of neural sensory mechanisms have been proposed, but in contrast to the gut-brain axis, details for both the exact site and molecular signaling steps of their peripheral transduction mechanisms are generally lacking. Similarly, knowledge about function-specific sensory and motor components of both vagal and spinal access pathways to the hepatic parenchyma is missing. Lack of progress …

Dimensions Of Parenting And Children’S Conduct Problems: The Importance Of Considering Children’S Callous–Unemotional Traits, Carolina Facci, Andrea Baroncelli, Paul J. Frick, Enrica Ciucci

Faculty Publications

Research has clearly indicated that the development of serious behavioral problems in children and adolescents is influenced by parenting. However, recent research has refined the role of parenting by showing the importance of distinguishing between different types of parenting and in considering the role of callous–unemotional traits (CU traits) and conduct problems (CP) of the children. In the current study, we advance this research by distinguishing between emotional (e.g., parental warmth; parental hostility) and behavioral (e.g., use of positive reinforcement; inconsistent discipline/harsh discipline) aspects of parenting and by considering the way parents respond to children’s emotions (i.e., coaching and dismissing). …

Anoctamin 4 Defines Glucose-Inhibited Neurons In The Ventromedial Hypothalamus, Longlong Tu, Yanlin He, Yong Xu

Division of Basic Science Faculty Publications

No abstract provided.

Accelerated Onset Of Diabetes In Non-Obese Diabetic Mice Fed A Refined High-Fat Diet, Heidi M. Batdorf, Luz De Luna Lawes, Gabrielle A. Cassagne, Molly S. Fontenot, Innocence C. Harvey, Jeremy T. Richardson, David H. Burk, Samuel D. Dupuy, Michael D. Karlstad, J. Michael Salbaum, Jaroslaw Staszkiewicz, Robbie Beyl, Sujoy Ghosh, Susan J. Burke, J. Jason Collier

Division of Basic Science Faculty Publications

Aim: Type 1 diabetes results from autoimmune events influenced by environmental variables, including changes in diet. This study investigated how feeding refined versus unrefined (aka ‘chow’) diets affects the onset and progression of hyperglycaemia in non-obese diabetic (NOD) mice. Methods: Female NOD mice were fed either unrefined diets or matched refined low- and high-fat diets. The onset of hyperglycaemia, glucose tolerance, food intake, energy expenditure, circulating insulin, liver gene expression and microbiome changes were measured for each dietary group. Results: NOD mice consuming unrefined (chow) diets developed hyperglycaemia at similar frequencies. By contrast, mice consuming the defined high-fat diet had …

Effect Of Long-Term Caloric Restriction On Telomere Length In Healthy Adults: Calerie™ 2 Trial Analysis, Waylon J. Hastings, Qiaofeng Ye, Sarah E. Wolf, Calen P. Ryan, Sai Krupa Das, Kim M. Huffman, Michael S. Kobor, William E. Kraus, Julia L. Macisaac, Corby K. Martin, Susan B. Racette, Leanne M. Redman, Daniel W. Belsky, Idan Shalev

Clinical Research Faculty Publications

Caloric restriction (CR) modifies lifespan and aging biology in animal models. The Comprehensive Assessment of Long-Term Effects of Reducing Intake of Energy (CALERIE™) 2 trial tested translation of these findings to humans. CALERIE™ randomized healthy, nonobese men and premenopausal women (age 21–50y; BMI 22.0–27.9 kg/m2), to 25% CR or ad-libitum (AL) control (2:1) for 2 years. Prior analyses of CALERIE™ participants' blood chemistries, immunology, and epigenetic data suggest the 2-year CR intervention slowed biological aging. Here, we extend these analyses to test effects of CR on telomere length (TL) attrition. TL was quantified in blood samples collected at baseline, 12-, …

Increasing Mowing Height And Nitrogen Fertility Does Not Enhance Unirrigated Centipedegrass Summer Drought Stress, Mike Adams, Jeffrey Beasley, Jeff Kuehny, Dylan Watson

Faculty Publications

Proper N fertilization and higher mowing heights are recommended to enhance rooting for greater turfgrass summer drought stress. To examine the effects of these primary cultural practices on centipedegrass [Eremochloa ophiuroides (Munro) Hack.] drought response in the mid-Southern United States, a study was conducted to evaluate four mowing heights (1, 2, 3 and 4 inches) and N fertilization versus no fertilization. During the study, roots were periodically harvested at upper (0–3 inches) and lower (3–6 inches) soil depths, and roots were analyzed for architecture which included root length (RL) and surface area (SA), and root weight (RW). In July, plant-soil …

Phytochemical Profiling And Bioactive Potential Of Grape Seed Extract In Enhancing Salinity Tolerance Of Vicia Faba, Doaa E. Elsherif, Fatmah A. Safhi, Prasanta K. Subudhi, Abdelghany S. Shaban, Mai A. El-Esawy, Asmaa M. Khalifa

Faculty Publications

Salinity stress poses a significant threat to crop productivity worldwide, necessitating effective mitigation strategies. This study investigated the phytochemical composition and potential of grape seed extract (GSE) to mitigate salinity stress effects on faba bean plants. GC–MS analysis revealed several bioactive components in GSE, predominantly fatty acids. GSE was rich in essential nutrients and possessed a high antioxidant capacity. After 14 days of germination, GSE was applied as a foliar spray at different concentrations (0, 2, 4, 6, and 8 g/L) to mitigate the negative effects of salt stress (150 mM NaCl) on faba bean plants. Foliar application of 2–8 …

Discovery Of A Shock-Compressed Magnetic Field In The Northwestern Rim Of The Young Supernova Remnant Rx J1713.7–3946 With X-Ray Polarimetry, Riccardo Ferrazzoli, Dmitry Prokhorov, Niccolò Bucciantini, Patrick Slane, Jacco Vink, Martina Cardillo, Yi Jung Yang, Stefano Silvestri, Ping Zhou, Enrico Costa, Nicola Omodei, C. Y. Ng, Paolo Soffitta, Martin C. Weisskopf, Luca Baldini, Alessandro Di Marco, Victor Doroshenko, Jeremy Heyl, Philip Kaaret, Dawoon E. Kim, Frédéric Marin, Tsunefumi Mizuno, Melissa Pesce-Rollins, Carmelo Sgrò, Douglas A. Swartz, Toru Tamagawa, Fei Xie, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi

Faculty Publications

Supernova remnants (SNRs) provide insights into cosmic-ray acceleration and magnetic field dynamics at shock fronts. Recent X-ray polarimetric measurements by the Imaging X-ray Polarimetry Explorer (IXPE) have revealed radial magnetic fields near particle acceleration sites in young SNRs, including Cassiopeia A, Tycho, and SN 1006. We present here the spatially resolved IXPE X-ray polarimetric observation of the northwestern rim of SNR RX J1713.7–3946. For the first time, our analysis shows that the magnetic field in the particle acceleration sites of this SNR is oriented tangentially with respect to the shock front. Because of the lack of precise Faraday rotation measurements …