Digital Commons Network^™

Children’S Environmental Health In South And Southeast Asia: Networking For Better Child Health Outcomes, Peter D. Sly, Brittany Trottier, David Carpenter, Ubon Cha’On, Stephania Cormier, Betsy Galluzzo, Samayita Ghosh, Fiona Goldizen, Michelle Heacock, Paul Jagals, Hari Datt Joshi, Prachi Kathuria, Le Thai Ha, Melina S. Magsumbol, Panida Navasumrit, Poornima Prabhakaran, Banalata Sen, Chris Skelly, Inoka Suraweera, Sathiarany Vong, Chador Wangdi, William A. Suk

Faculty Publications

© 2019 The Author(s). Children are particularly vulnerable to environmental hazards because they receive higher doses of pollutants in any given environment and often do not have equitable access to social protection mechanisms such as environmental and health care services. The World Health Organization established a global network of collaborating centres that address children’s environmental health (CEH). The network developed a focus on low- and middle-income countries (LMICs) and is broadening its reach by conducting regional workshops for CEH. Objective: This paper reports on the outcomes of a workshop held in conjunction with the 17th International Conference (November 2017) of …

Research At Cct (2019), Lsu Center For Computation And Technology

Components

No abstract provided.

Impact Report, 2018-2019, Lsu Libraries

Libraries Impact Reports

No abstract provided.

Effector Gene Reshuffling Involves Dispensable Mini-Chromosomes In The Wheat Blast Fungus, Zhao Peng, Ely Oliveira-Garcia, Guifang Lin, Ying Hu, Melinda Dalby, Pierre Migeon, Haibao Tang, Mark Farman, David Cook, Frank F. White, Barbara Valent, Sanzhen Liu

Faculty Publications

Newly emerged wheat blast disease is a serious threat to global wheat production. Wheat blast is caused by a distinct, exceptionally diverse lineage of the fungus causing rice blast disease. Through sequencing a recent field isolate, we report a reference genome that includes seven core chromosomes and mini-chromosome sequences that harbor effector genes normally found on ends of core chromosomes in other strains. No mini-chromosomes were observed in an early field strain, and at least two from another isolate each contain different effector genes and core chromosome end sequences. The mini-chromosome is enriched in transposons occurring most frequently at core …

Let Us Forget This Cherishing Of Women In Library Work: Women In The American Library War Service, 1918-1920, Suzanne Marie Stauffer

Faculty Publications

No abstract provided.

Marilla Waite Freeman: The Librarian As Literary Muse, Gatekeeper, And Disseminator Of Print Culture, Suzanne Marie Stauffer

Faculty Publications

No abstract provided.

Lsu General Catalog 2019-2020, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The LSU General Catalog includes information on registration and financial aid as well as academic services offered to all students.

The Criminal Justice Systems And Psychological Disfranchisement, Morgan Johnson

Honors Capstones

No abstract provided.

Borders Of Engagement: Rethinking Scholarship, Activism, And The Academy, Bryan J. Mccann

Faculty Publications

The rhetorical norms around scholarly engagement presume that scholars participate in activist work outside their professional spaces. The avatar of the activist-scholar is the energetic graduate student who fulfills their academic responsibilities while also pursuing activist interests in the “community.” This chapter argues the presumption that activist rhetoricians and other scholars must traverse the border between academy and community reifies the border between the engaged scholar and academia itself. Rhetorical studies, and higher education generally, have always to some degree been invested in traversing the campus-community border. Rhetorical studies, both its communication and composition manifestations, came of age alongside the …

Diet Of Lesser Scaup Wintering On Lake Pontchartrain, Louisiana, Clay M. Stroud, Claire E. Caputo, Michael A. Poirrier, Kevin M. Ringelman

Faculty Publications

The lesser scaup Aythya affinis has been a species of conservation concern since continental breeding populations began declining in the 1980s. The causes of this decline are likely multifaceted, but cross-seasonal effects are believed to play a prominent role: females unable to acquire sufficient nutrient reserves during winter and spring migration have poor survival and breeding success. Understanding scaup diet composition and prey selection can help managers not only diagnose mechanisms underlying wintering scaup distributions, but may also help direct management actions to increase forage availability and quality. We evaluated the diet of 60 scaup collected from a major wintering …

Progesterone Alters The Bovine Uterine Fluid Lipidome During The Period Of Elongation, Constantine A. Simintiras, José M. Sánchez, Michael Mcdonald, Pat Lonergan

Faculty Publications

Successful bovine pregnancy establishment hinges on conceptus elongation, a key reproductive phenomenon coinciding with the period during which most pregnancies fail. Elongation is yet to be recapitulated in vitro, whereas in vivo it is directly driven by uterine secretions and indirectly influenced by prior circulating progesterone levels. To better understand the microenvironment evolved to facilitate this fundamental developmental event, uterine fluid was recovered on Days 12–14 of the oestrous cycle – the window of conceptus elongation initiation – from cycling heifers supplemented, or not, with progesterone. Subsequent lipidomic profiling of uterine luminal fluid by advanced high-throughput metabolomics revealed the consistent …

Aspects Of Embryo-Maternal Communication In Establishment Of Pregnancy In Cattle, José M. Sánchez, Constantine A. Simintiras, Patrick Lonergan

Faculty Publications

Establishment of pregnancy in mammals requires reciprocal molecular communication between the conceptus and endometrium that modifies the endometrial transcriptome and uterine luminal milieu to support pregnancy. Due to the small size of the early embryo and elongating conceptus relative to the volume of the uterine lumen, collection of endometrium adjacent to the developing conceptus is difficult following conventional uterine flushing methods in cattle. Use of endometrial explants in culture can overcome this challenge and reveal information about the dialogue between the developing embryo and the uterus. The aim of this short review is to summarize some of our recent findings …

Inhibition Of Selected Pathogens Inoculated On The Surface Of Catfish Fillets By High Molecular Weight Chitosan Coating, Baris Karsli, Emre Caglak, Dapeng Li, Nancy K. Rubio, Marlene Janes, Witoon Prinyawiwatkul

Faculty Publications

Antibacterial activity of high molecular weight water-soluble (HMWWS) chitosan (800 kDa) was investigated against four Gram-negative (Escherichia coli, Salmonella typhimurium, Vibrio cholerae and Vibrio parahaemolyticus) and two Gram-positive (Staphylococcus aureus and Listeria monocytogenes) bacteria. Catfish fillets were surface-inoculated with these food-borne pathogens and coated with chitosan dissolved in aspartic acid (AS) or acetic acid (AC) solution at different concentrations (1% or 3%). Samples were stored at 4 °C for 8 days, except for those inoculated with Vibrio species (10 °C for 6 days). Overall, the most effective coating treatment was the 3% HMWWS chitosan in AS solution (800AS3%). Compared with …

Comparative Functional And Phylogenomic Analyses Of Host Association In The Remoras (Echeneidae), A Family Of Hitchhiking Fishes, C. P. Kenaley, A. Stote, W. B. Ludt, P. Chakrabarty

Faculty Publications

The family Echeneidae consists of eight species of marine fishes that hitchhike by adhering to a wide variety of vertebrate hosts via a sucking disc. While several studies have focused on the interrelationships of the echeneids and the adhesion performance of a single species, no clear phylogenetic hypothesis has emerged and the morphological basis of adhesion remains largely unknown. We first set out to resolve the interrelationships of the Echeneidae by taking a phylogenomic approach using ultraconserved elements. Then, within this framework, we characterized disc morphology through μ-CT analysis, evaluated host specificity through an analysis of host phylogenetic distance, and …

Domain Decomposition For Quasi-Periodic Scattering By Layered Media Via Robust Boundary-Integral Equations At All Frequencies, Carlos Pérez-Arancibia, Stephen P. Shipman, Catalin Turc, Stephanos Venakides

Faculty Publications

We develop a non-overlapping domain decomposition method (DDM) for scalar wave scattering by periodic layered media. Our approach relies on robust boundary-integral equation formulations of Robin-to-Robin (RtR) maps throughout the frequency spectrum, including cutoff (or Wood) frequencies. We overcome the obstacle of non-convergent quasi-periodic Green functions at these frequencies by incorporating newly introduced shifted Green functions. Using the latter in the definition of quasi-periodic boundary-integral operators leads to rigorously stable computations of RtR operators. We develop Nyström discretizations of the RtR maps that rely on trigonometric interpolation, singularity resolution, and fast convergent windowed quasi-periodic Green functions. We solve the tridiagonal …

Louisiana Survey 2019, Lsu Reilly Center For Media & Public Affairs

Reilly Center Louisiana Surveys

The 2019 Louisiana Survey is the eighteenth in an annual series sponsored by the Reilly Center for Media & Public Affairs at Louisiana State University’s Manship School of Mass Communication.

The mission of the Louisiana Survey is to establish benchmarks as well as to capture change in residents’ assessments of state government services. The survey is further dedicated to tracking public opinion on the contemporary policy issues that face the state. Each iteration of the Louisiana Survey contains core items designed to serve as barometers of public sentiment, including assessments of whether the state is heading in the right direction …

Evidence For Fe-Si-O Liquid Immiscibility At Deep Earth Pressures, Sarah M. Arveson, Jie Deng, Bijaya B. Karki, Kanani K.M. Lee

Faculty Publications

Seismic observations suggest that the uppermost region of Earth's liquid outer core is buoyant, with slower velocities than the bulk outer core. One possible mechanism for the formation of a stably stratified layer is immiscibility in molten iron alloy systems, which has yet to be demonstrated at core pressures. We find immiscibility between liquid Fe-Si and Fe-Si-O persisting to at least 140 GPa through a combination of laser-heated diamond-anvil cell experiments and first-principles molecular dynamics simulations. High-pressure immiscibility in the Fe-Si-O system may explain a stratified layer atop the outer core, complicate differentiation and evolution of the deep Earth, and …

Non-Pt-Symmetric Two-Layer Cylindrical Waveguide For Exceptional-Point-Enhanced Optical Devices, Yin Huang, Yuecheng Shen, Georgios Veronis

Faculty Publications

We investigate the exceptional points in a two-layer cylindrical waveguide structure consisting of absorbing and non-absorbing dielectrics. We show that, by tuning the core to total radius ratio and the refractive index of the core layer in such a structure, the complex effective indices of two waveguide modes can coalesce so that an exceptional point is formed. We show that the sensitivity of the effective index of the waveguide mode to variations of the refractive index of the material filling the shell layer is enhanced at the exceptional point. In addition, we show that larger sensitivity enhancement is obtained for …

Correlation Of Circular Differential Optical Absorption With Geometric Chirality In Plasmonic Meta-Atoms, Jon C. Wilson, Philipp Gutsche, Sven Herrmann, Sven Burger, Kevin M. Mcpeak

Faculty Publications

We report a strong correlation between the calculated broadband circular differential optical absorption (CDOA) and the geometric chirality of plasmonic meta-atoms with twodimensional chirality. We investigate this correlation using three common gold meta-atom geometries: L-shapes, triangles, and nanorod dimers, over a broad range of geometric parameters. We show that this correlation holds for both contiguous plasmonic meta-atoms and non-contiguous structures which support plasmonic coupling effects. A potential application for this correlation is the rapid optimization of plasmonic nanostructure for maximum broadband CDOA.

Mrt-Lattice Boltzmann Model For Multilayer Shallowwater Flow, Kevin R. Tubbs, Frank T.C. Tsai

Faculty Publications

The objectives of this study are to introduce a multiple-relaxation-time (MRT) lattice Boltzmann model (LBM) to simulate multilayer shallow water flows and to introduce graphics processing unit (GPU) computing to accelerate the lattice Boltzmann model. Using multiple relaxation times in the lattice Boltzmann model has an advantage of handling very low kinematic viscosity without causing a stability problem in the shallow water equations. This study develops a multilayer MRT-LBM to solve the multilayer Saint-Venant equations to obtain horizontal flow velocities in various depths. In the multilayer MRT-LBM, vertical kinematic viscosity forcing is the key term to couple adjacent layers. We …

Geometric Hawkes Processes With Graph Convolutional Recurrent Neural Networks, Jin Shang, Mingxuan Sun

Faculty Publications

Hawkes processes are popular for modeling correlated temporal sequences that exhibit mutual-excitation properties. Existing approaches such as feature-enriched processes or variations of Multivariate Hawkes processes either fail to describe the exact mutual influence between sequences or become computational inhibitive in most real-world applications involving large dimensions. Incorporating additional geometric structure in the form of graphs into Hawkes processes is an effective and efficient way for improving model prediction accuracy. In this paper, we propose the Geometric Hawkes Process (GHP) model to better correlate individual processes, by integrating Hawkes processes and a graph convolutional recurrent neural network. The deep network structure …

My Big Fat Catholic Queer Wedding, Kourtney Baker

Comparative Woman

No abstract provided.

Phenotypic And Transcriptomic Characterization Of Colonial Phase Variation In The Cholera Pathogen Reveals A Novel Smooth Biofilm-Defective Form, Bliss Nicole Lambert

LSU Doctoral Dissertations

Biofilm formation, through the production of Vibrio polysaccharide (VPS), greatly enhances the environmental fitness and pathogenic success of Vibrio cholerae. As a result of phase variation, V. cholerae can switch from a smooth form to rugose, whose cells produce excess VPS, resulting in highly structured biofilms and greater resistance to stress. To further characterize the reversible process of phase variation, we isolated three colonial lineages. Each lineage began with a smooth parent, N16961, and contained a rugose variant derived from the parent, N16961R, as well as a smooth revertant of the rugose, N16961SD. We found clear phenotypic and transcriptomic …

Special Issue School-To-Prison Pipeline, Taboo Journal Special Issue

Taboo: The Journal of Culture and Education

No abstract provided.

A Student Saved Is Not A Dollar Earned: A Meta-Analysis Of School Disparities In Discipline Practice Toward Black Children, Jemimah L. Young, Jamaal R. Young, Bettie Ray Butler

Taboo: The Journal of Culture and Education

No abstract provided.

Latinx Youth Counterstories In A Court Diversion Program, Gerardo Mancilla

Taboo: The Journal of Culture and Education

No abstract provided.

Using Double Consciousness As An Analytic Tool To Discuss The Decision Making Of Black School Leaders In Disrupting The School-To-Prison Pipeline, Ramon Goings, Sheree Alexander, Julius Davis, Nicole M. Walters

Taboo: The Journal of Culture and Education

No abstract provided.

Restorative Justice As A Doubled-Edged Sword: Conflating Restoration Of Black Youth With Transformation Of Schools, Arash Daneshzadeh, George Sirrakos

Taboo: The Journal of Culture and Education

No abstract provided.

Introduction: School-To-Prison Pipeline Special Issue, Ahmad Washington, Malik Henfield

Taboo: The Journal of Culture and Education

No abstract provided.

Fundamental Limits On The Capacities Of Bipartite Quantum Interactions, Stefan Bäuml, Siddhartha Das, Mark M. Wilde

Faculty Publications

Bipartite quantum interactions have applications in a number of different areas of quantum physics, reaching from fundamental areas such as quantum thermodynamics and the theory of quantum measurements to other applications such as quantum computers, quantum key distribution, and other information processing protocols. A particular aspect of the study of bipartite interactions is concerned with the entanglement that can be created from such interactions. In this Letter, we present our work on two basic building blocks of bipartite quantum protocols, namely, the generation of maximally entangled states and secret key via bipartite quantum interactions. In particular, we provide a nontrivial, …