Digital Commons Network^™

Pineapple Mealybug Wilt-Associated Viruses 1, 2, And 3 Are Associated With Mealybug Wilt Disease Of Pineapple In Peru, Emerson Clovis Carrasco-Lozano, Gabriela Angela Carrillo-Ordóñez, Delia Gamarra-Gamarra, Gilberto Torres-Suarez, Charo Milagros Villar, Claudia Stange, Rodrigo A. Valverde

Faculty Publications

Mealybug wilt of pineapple (MWP) is the most important disease of pineapple worldwide. During the months of September and November 2020, pineapple production fields of the cultivar Hawaiiana and hybrid MD-2 in Satipo and Chanchamayo provinces of Peru, showed typical symptoms of MWP. Based on symptoms, the disease incidence level ranged between 70 and 90%. Symptomatic and asymptomatic foliar samples were collected and tested by RT-PCR using primers specific for pineapple mealybug wilt virus (PMWaV) 1, 2, and 3. Selected amplified fragments were sequenced and analyzed with bioinformatics tools. PMWaV-1, 2, and 3 were detected in symptomatic samples of both …

Proton Branching Ratios In 22 Mg For X-Ray Bursts, S. H. Kim, K. Y. Chae, D. W. Bardayan, J. C. Blackmon, K. A. Chipps, R. Hatarik, K. L. Jones, M. J. Kim, R. L. Kozub, J. F. Liang, C. Matei, B. H. Moazen, C. D. Nesaraja, P. D. O’Malley, S. D. Pain, M. S. Smith

Faculty Publications

Decay protons from ²² Mg energy levels populated through a previously reported ²⁴ Mg(p, t) ²² Mg transfer reaction (Chae et al. in Phys Rev C 79:055804, 2009) have been analyzed for proton branching ratios as a follow-up analysis. The measurement was performed at the Holifield Radioactive Ion Beam Facility of Oak Ridge National Laboratory by utilizing 41-MeV proton beams and ²⁴ Mg solid targets. Decay protons and reaction tritons were simultaneously detected with a silicon detector array. By investigating the ²⁴ Mg(p, t) ²² Mg*(p) ²¹ Na channels, the proton branching ratios of five ²² Mg excited states were …

Validation Of Toi-1221 B: A Warm Sub-Neptune Exhibiting Transit Timing Variations Around A Sun-Like Star, Christopher Mann, David Lafreniére, Diana Dragomir, Samuel N. Quinn, Thiam Guan Tan, Karen A. Collins, Steve B. Howell, Carl Ziegler, Andrew W. Mann, Keivan G. Stassun, Martti H. Kristiansen, Hugh Osborn, Tabetha Boyajian, Nora Eisner, Coel Hellier, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Jon M. Jenkins, Jesus Noel Villaseñor, Brian Mclean, Pamela Rowden, Guillermo Torres, Douglas A. Caldwell, Kevin I. Collins, Richard P. Schwarz

Faculty Publications

We present a validation of a long-period ( 91.68278-0.00041+0.00032 days) transiting sub-Neptune planet, TOI-1221 b (TIC 349095149.01), around a Sun-like (m V = 10.5) star. This is one of the few known exoplanets with a period >50 days, and belongs to the even smaller subset of which have bright enough hosts for detailed spectroscopic follow-up. We combine Transiting Exoplanet Survey Satellite light curves and ground-based time-series photometry from the Perth Exoplanet Survey Telescope (0.3 m) and Las Cumbres Observatory global telescope network (1.0 m) to analyze the transit signals and rule out nearby stars as potential false-positive sources. High-contrast imaging …

Grandma And Hxmt Observations Of Grb 221009a: The Standard Luminosity Afterglow Of A Hyperluminous Gamma-Ray Burst—In Gedenken An David Alexander Kann, D. A. Kann, S. Agayeva, V. Aivazyan, S. Alishov, C. M. Andrade, S. Antier, A. Baransky, P. Bendjoya, Z. Benkhaldoun, S. Beradze, D. Berezin, M. Boër, E. Broens, S. Brunier, M. Bulla, O. Burkhonov, E. Burns, Y. Chen, Y. P. Chen, M. Conti, M. W. Coughlin, W. W. Cui, F. Daigne, B. Delaveau, H. A.R. Devillepoix, T. Dietrich, D. Dornic, F. Dubois, J. G. Ducoin, E. Durand, P. A. Duverne, H. B. Eggenstein, S. Ehgamberdiev

Faculty Publications

Object GRB 221009A is the brightest gamma-ray burst (GRB) detected in more than 50 yr of study. In this paper, we present observations in the X-ray and optical domains obtained by the GRANDMA Collaboration and the Insight Collaboration. We study the optical afterglow with empirical fitting using the GRANDMA+HXMT-LE data sets augmented with data from the literature up to 60 days. We then model numerically using a Bayesian approach, and we find that the GRB afterglow, extinguished by a large dust column, is most likely behind a combination of a large Milky Way dust column and moderate low-metallicity dust in …

Handling And Restraint Induce A Significant Increase In Plasma Corticosterone In Hispaniolan Amazon Parrots (Amazona Ventralis), Shelby N. Parks, Thomas N. Tully, Aspen L. Settle, Christine R. Lattin

Faculty Publications

OBJECTIVE: To measure baseline plasma corticosterone levels in Hispaniolan Amazon parrots (Amazona ventralis) and assess the effects of handling and restraint on corticosterone levels over 1 hour, reflective of what parrots might experience during veterinary care. ANIMALS: 10 male and 12 female Hispaniolan Amazon parrots. PROCEDURES: Each parrot was removed from its cage and wrapped in a towel for restraint similar to that performed in a clinical setting. An initial baseline blood sample was collected in < 3 minutes upon entrance into the parrot room, after which blood samples were taken every 15 minutes for 1 hour (a total of 5 blood samples). An enzyme-linked immunoassay was validated for Hispaniolan Amazon parrots and used to determine concentrations of plasma corticosterone. RESULTS: On average, parrots showed a significant increase in corticosterone between baseline samples and all subsequent postrestraint time points (average baseline corticosterone ± SD: 0.51 ± 0.65 ng/mL). Females, on average, displayed significantly higher corticosterone levels than males after 30, 45, and 60 minutes of restraint (P = .016, P = .0099, and P = .015, respectively). Birds with feather-destructive behavior did not have significantly higher corticosterone levels than birds without the condition (P = .38). CLINICAL RELEVANCE: Understanding the physiological stress response in companion psittacine birds during routine handling will allow clinicians to better evaluate how this may affect the patient's condition and diagnostic test results. Assessing how corticosterone correlates to behavioral conditions such as feather-destructive behavior will provide clinicians with the potential to develop treatment options.

‘Flla09015-U1’: A Broadly Adapted Dual-Purpose Oat Cultivar For Southern Usa, Md Ali Babar, Stephen A. Harrison, Ann Blount, Ronald D. Barnett, Jerry Johnson, Mohamed Mergoum, Daniel J. Mailhot, J. Paul Murphy, Richard E. Mason, Amir Ibrahim, Russell Sutton, Bryan Simoneaux, Richard Boyles, Brad Stancil, David Marshall, Myron Fountain, Kathy Esvelt Klos, Naeem Khan, Marcelo Wallau, Henry G. Jordan

Faculty Publications

‘FLLA09015-U1’ (Reg. no. CV-387, PI 699117) is a new facultative oat (Avena sativa L.) cultivar that was co-developed by the University of Florida and Louisiana State University Agricultural Center and was released in 2019. This line was derived from a single cross of FL0210-J1/MN06203. FLLA09015-U1 has considerable potential for grain and forage yield and for conservation tillage purposes in the southern United States. Exclusive marketing rights for FLLA09015-U1 has been granted to JoMar Seeds and is currently commercialized under the name of Juggernaut. FLLA09015-U1 was developed using selected bulk breeding method and was selected as an F5:6 head row. The …

‘Flla11019-8’: A New Dual-Purpose Facultative Oat Cultivar For Grain And Forage Production In The Southern United States, Md Ali Babar, Stephen A. Harrison, Ann Blount, Ronald D. Barnett, Jerry Johnson, Mohamed Mergoum, Daniel J. Mailhot, J. Paul Murphy, Richard E. Mason, Amir Ibrahim, Russell Sutton, Bryan Simoneaux, Richard Boyles, Brad Stancil, David Marshall, Myron Fountain, Kathy Esvelt Klos, Naeem Khan, Marcelo Wallau, Henry G. Jordan, Xuefeng Ma, Juan Arbelaez

Faculty Publications

‘FLLA11019-8’ (Reg. no. CV-386, PI 700040) is new facultative oat (Avena sativa L.) cultivar for the southern United States for forage, grain, cover, and wildlife food crop uses. It was co-developed by the University of Florida and Louisiana State University Agricultural Center and was released in 2020 under the SunGrains, a cooperative small grain breeding program among seven Southern Universities. This line was derived from a single cross between two advanced breeding lines, FL0564-Ab13 and LA06071SBSB-S1. Exclusive marketing rights were granted to Ragan & Massey, Inc., and the line is currently commercializing under the names of RAM Forage Oats and …

The Lsu Agcenter Healthy Communities Initiative: Community-Participatory Policy, Systems, And Environmental Change, Denise Holston, Matthew Greene

Faculty Publications

No abstract provided.

Access To Athletic Trainers And Emergency Medical Services Activations For Sport-Related Injuries, Rebecca M. Hirschhorn, Robert A. Huggins, Zachary Y. Kerr, James M. Mensch, Thomas P. Dompier, Caroline Rudisill, Susan W. Yeargin

Faculty Publications

Context: Having athletic trainers (ATs) employed at secondary schools is associated with improved preparedness for sport-related emergencies. The use of emergency medical services (EMS) in settings with different access to athletic training services remains unknown. Objective: To compare the incidence of EMS activations for patients with sport-related injuries among zip codes with various levels of access to athletic training services. Design: Descriptive epidemiology study. Setting: Data were obtained from the National EMS Information System and the Athletic Training Location and Services Project. Patients or Other Participants: Zip codes where 911 EMS activations for sport-related injuries among individuals 13 to 18 …

Higher Glucose Fluctuation Is Associated With A Higher Risk Of Cardiovascular Disease: Insights From Pooled Results Among Patients With Diabetes, Feng Li, Lei Zhang, Yun Shen, Huan Huan Liu, Zhen Ye Zhang, Gang Hu, Ru Xing Wang

Population and Public Health Science Faculty Publications

Background: The relationship between glucose fluctuation and the risk of cardiovascular disease (CVD) in patients with diabetes remains elusive. Glycated hemoglobin (HbA1c) variability is a key parameter of glucose fluctuation. Methods: PubMed, Cochrane Library, Web of Science, and Embase were searched up to 1 July 2022. Studies reporting associations of HbA1c variability (HbA1c-SD), coefficient of variation of HbA1c (HbA1c-CV), and HbA1c variability score [HVS] with the risk of CVD among patients with diabetes were included. We used three different insights (a high-low value meta-analysis, a study-specific meta-analysis, and a non-linear dose–response meta-analysis) to explore the relationship between HbA1c variability and …

The Impact Of Reimbursement For Non-Face-To-Face Chronic Care Management On Health Utilization Among Patients With Type 2 Diabetes In Louisiana, Yixue Shao, Charles Stoecker, Dongzhe Hong, Elizabeth Nauman, Vivian Fonseca, Gang Hu, Alessandra N. Bazzano, Edmond K. Kabagambe, Lizheng Shi

Population and Public Health Science Faculty Publications

Objectives: We evaluated the impact of reimbursement for non-face-to-face chronic care management (NFFCCM) on healthcare utilization among Medicare beneficiaries with type 2 diabetes in Louisiana. Methods: We implemented group-based trajectory balancing and propensity score matching to obtain comparable treatment (with NFFCCM) and control (without NFFCCM) groups at baseline. Patients with diabetes with Medicare as their primary payer at baseline were extracted using electronic health records of 3 health systems from Research Action for Health Network, a Clinical Research Network. The study period is from 2013 to early 2020. Our outcomes include general healthcare utilization (outpatient, emergency department, and inpatient encounters) …

Cotton Blight Identification With Ground Framed Canopy Photo-Assisted Multispectral Uav Images, Changwei Wang, Yongchong Chen, Zhipei Xiao, Xianming Zeng, Shihao Tang, Fei Lin, Luxiang Zhang, Xuelian Meng, Shaoqun Liu

Faculty Publications

Cotton plays an essential role in global human life and economic development. However, diseases such as leaf blight pose a serious threat to cotton production. This study aims to advance the existing approach by identifying cotton blight infection and classifying its severity at a higher accuracy. We selected a cotton field in Shihezi, Xinjiang in China to acquire multispectral images with an unmanned airborne vehicle (UAV); then, fifty-three 50 cm by 50 cm ground framed plots were set with defined coordinates, and a photo of its cotton canopy was taken of each and converted to the L*a*b* color space as …

Study On The Thermospheric Density Distribution Pattern During Geomagnetic Activity, Lirong Yin, Lei Wang, Lijun Ge, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng

Faculty Publications

The atmospheric density of the thermosphere is a fundamental parameter for spacecraft launch and orbit control. Under magnetic storm conditions, the thermospheric atmospheric density experiences significant fluctuations, which have a negative impact on spacecraft control. Exploring thermospheric density during geomagnetic storms can help to mitigate the effects of such events. Research on the inversion of accelerometer measurements for different satellites and the variations of atmospheric density under extreme conditions is still in its infancy. In this paper, the distribution of atmospheric density during three geomagnetic storms is investigated from the inversion results of the Swarm-C accelerometer. Three major geomagnetic storms …

Editorial Introduction: Punctuated Equilibrium, Multiple Streams, Environmental Governance, And Many More, Geoboo Song, Michael D. Jones, Holly L. Peterson, Aaron Smith-Walter, Melissa K. Merry, Gwen Arnold, Creed Tumlison, Rachael M. Moyer

Faculty Publications

No abstract provided.

Networks In Motion: The Alliances Of Information Communication Technologies And Mobility Technologies During The 1918 Influenza Pandemic, Miles C. Coleman, Will Mari

Faculty Publications

In this article, we turn back to the 1918 influenza pandemic to throw light on the alliances of information communication technologies and technologies of mobility (such as the car) during the pandemic. We examine newspaper articles, technical publications, and other historical texts to demonstrate that, despite the fact that mobile technologies—such as cellular phones—did not exist during the 1918 pandemic, the telephone and mobility technology nonetheless formed alliances as networks in motion, or social moments in which risk and reward are calculated not simply by the ability to move, but rather the ability to move, while remaining connected, revealing insight …

Online Luxury Resale Platforms And Customer Experiences: A Text Mining Analysis Of Online Reviews, Chuanlan Liu, Sibei Xia, Chunmin Lang

Faculty Publications

There are long-standing arguments that challenge the resale business as a circular fashion model. Considering the whole fashion industry and market, luxury resale is still quite small. To scale the industry, it is critical to attract more consumers to embrace fashion resale and circular fashion. However, many of the customers most likely to embrace resale might have already opted into the market, indicating that online or in-store resale businesses are competing for a limited pool of customers. As a result, it is challenging for the industry to scale. Therefore, it is imperative to understand how consumers engage with luxury resale …

Gifts And Commodities: A Dialectical Thought Experiment For Sublation, Ruirui Zhang, Joseph D’Andrea, Chunmin Lang

Faculty Publications

The core motivation for this study is the realization that the Sustainable Development Goals (SDGs) encounter temporary obstacles, conflicts, or inconsistencies that impede progress and generalization. According to the authors, sustainable development across social, environmental, and economic dimensions is unlikely to occur without redefining the meaning and recalibrating the metrics used to measure commodities. These meanings and metrics must align with values such as general reciprocity, morality, and the common good, going beyond mere calculations of means and ends and personal preferences. The research has three primary objectives: first, to compare and reassess the meanings and responsibilities assigned to “items” …

Examining Generation Z Consumer Online Fashion Resale Participation And Continuance Intention Through The Lens Of Consumer Perceived Value, Chuanlan Liu, Jeremy M. Bernardoni, Zhongjie Wang

Faculty Publications

The fashion industry has recently embraced a circular economy due to the increased consumer awareness of environmental issues, especially among younger generations. However, it is unclear if younger consumers, especially Generation Z, are willing to consistently engage in sustainable consumption patterns, such as buying and selling pre-owned fashion products through online resale platforms. This research specifically focuses on Generation Z consumers’ online fashion resale participation continuance. A research model was proposed with perceived benefits, pro-environmental beliefs as antecedents to attitude and continuance intention, and consumer perceived value as a moderating factor shaping the specified direct and mediating relationship. An online …

Nearly-Lossless-To-Lossy Medical Image Compression By The Optimized Jpegxt And Jpeg Algorithms Through The Anatomical Regions Of Interest, Zhongqiang Li, Alexandra Ramos, Zheng Li, Michelle L. Osborn, Waleed Zaid, Xin Li, Yanping Li, Jian Xu

Faculty Publications

Currently, plenty of image data is generated that complicate storage and image transmission. Great efforts have been attempted on how to increase compression ratio (CR) without loss of critical diagnostic information. In this study, we designed two optimized JPEGXT (JPEGXT_OPT) and JPEG (JPEG_OPT) approaches by amplifying discrete cosine transform coefficients and using the entire anatomical region as ROI (region of interest). We found that ROI percentages have a great impact CR: smaller ROI percentages (10–30 %) could obtain a larger CR. Under the near-lossless compression, JPEGXT_OPT could have CRs up to 4.0 under small ROI percentages (10–30 %), while only …

The State Of Architectural Labor, Ivy Mcclure

Honors Capstones

No abstract provided.

Exploring Young People’S Attitudes Toward Affirmative Consent Policies, Grace Keller

Honors Capstones

No abstract provided.

Identity Validation, Bisexuality, And Online Community: A Qualitative Analysis Of Reddit Discussions, Elizabeth Haik

Honors Capstones

No abstract provided.

Improvement Of Existing Stage-Top Incubator For Cell Imaging (Stici), Alyson Goree

Honors Capstones

No abstract provided.

Regenerative Medicine For Tendon/Ligament Injuries: De Novo Equine Tendon/Ligament Neotissue Generation And Application, Takashi Taguchi

LSU Doctoral Dissertations

Tendon and ligament injuries are debilitating conditions across species. Poor regenerative capacities of these tissues limit restoration of original functions. The first study evaluated the effect of cellular administration on tendon/ligament injuries in horses using meta-analysis. The cellular administration was effective in restoring ultrasonographic echogenicity and increasing vascularity during early phase of healing. Additionally, it improved microstructural organization of healed tissue in terms of cellularity and fiber alignment. However, the study did not support its use for increasing rate of return to performance, expression/deposition of tendon-specific genes/proteins, or mechanical properties.

The findings led to the second study that engineered implantable …

Coded Ceramics: Computational Design Of Persian Ceramics, Nasrin Iravani

LSU Doctoral Dissertations

This research explores the use of computer-aided technology and robotics in the creation of digital art and crafts, while also considering the cultural history of digital design. It begins with an examination of the most recognizable styles of Persian ewers made between the years 1,000 and 1,400 AD in the Islamic era. After analyzing a hundred ewers from this period, I classified them based on distinctive features such as openings, necks, bodies, spouts, handles, and bases. Then I designed a series of 3D printed ceramic vessels – titled Coded Ceramics – that were inspired by elements of the historic ewers. …

Symmetric Functions Algebras (Sfa) Ii: Induced Matrices, Philip Feinsilver

Journal of Stochastic Analysis

No abstract provided.

Functional Domains Of The Hsv-1 Ul37 Protein In Virus Infectivity And Retrograde Transport In Neurons, Carolyn Clark

LSU Doctoral Dissertations

Herpes simplex virus type 1 is large alphaherpesvirus with 20 envelope proteins and 23 tegument proteins. Virus entry is via fusion of the viral envelope with cellular membranes mediated by a complex of viral glycoproteins. Glycoprotein B (gB) is the only fusogenic glycoprotein, while other viral glycoproteins and membrane proteins including gD, gH, gL, gK and UL20 membrane protein modulate gB’s fusogenicity. Previously, Our laboratory developed the HSV-1 (VC2) vaccines strain with partial deletions in the amino termini of gK (ΔgK(31–68)) and the UL20 membrane protein (ΔUL20(4–22)). VC2 enters epithelial cells only via endocytosis followed by release of the capsid …

Development, Survival, And Fecundity Of Helicoverpa Zea (Lepidoptera: Noctuidae) On Five Weedy Host Plants Common Across The Mid-South Usa, James P. Glover, Maribel Portilla, Gadi V.P. Reddy

Faculty Publications

Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae) is a highly mobile and polyphagous pest known to feed on over 300 cultivated and wild host plant species. Larvae cause significant economic damage to several commercial row crops over multiple generations each growing season. The objective of this study was to compare biological fitness of H. zea on 5 weedy host plants commonly found across the mid-south US. Crimson clover (Trifolium incarnatum L.), white clover (Trifolium repens L.), hairy vetch (Vicia villosa Roth), kudzu (Pueraria montana [Lour.] Merr. (all Fabaceae), and honeysuckle (Lonicera japonica Thunb.; Caprifoliaceae) were evaluated as primary food sources for H. …

Inverse Machine Learning Discovered Metamaterials With Record High Recovery Stress, Adithya Challapalli, John Konlan, Guoqiang Li

Faculty Publications

Lightweight shape memory polymer (SMP) metamaterials integrated with high strength, high flexibility, and high recovery stress are highly desired in load carrying structures and devices. A grand challenge is that these desired properties have contradictory requirements, for instance between strength and flexibility, and between flexibility and recovery stress. In this study, an inverse design framework using statistical tools and machine learning models is developed to design thin-walled cellular structures with the desired properties. The discovered thin-walled cellular structures are 3D printed using a novel SMP, which exhibited excellent structural properties with record high specific recovery stress. For comparison purpose, lattice …

Optimization Of Host Cell-Compatible, Antimicrobial Peptides Effective Against Biofilms And Clinical Isolates Of Drug-Resistant Bacteria, Jenisha Ghimire, Robert J. Hart, Anabel Soldano, Charles H. Chen, Shantanu Guha, Joseph P. Hoffmann, Kalen M. Hall, Leisheng Sun, Benjamin J. Nelson, Timothy K. Lu, Jay K. Kolls, Mario Rivera, Lisa A. Morici, William C. Wimley

Faculty Publications

Here, we describe the continued synthetic molecular evolution of a lineage of host-compatible antimicrobial peptides (AMP) intended for the treatment of wounds infected with drug-resistant, biofilm-forming bacteria. The peptides tested are variants of an evolved AMP called d-amino acid CONsensus with Glycine Absent (d-CONGA), which has excellent antimicrobial activities in vitro and in vivo. In this newest generation of rational d-CONGA variants, we tested multiple sequence-structure-function hypotheses that had not been tested in previous generations. Many of the peptide variants have lower antibacterial activity against Gram-positive or Gram-negative pathogens, especially variants that have altered hydrophobicity, secondary structure potential, or spatial …