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

Taboo: The Journal of Culture and Education

No abstract provided.

Thioglycosides Are Efficient Metabolic Decoys Of Glycosylation That Reduce Selectin Dependent Leukocyte Adhesion, Shuen Shiuan Wang, Xuefeng Gao, Virginia Del Solar, Xinheng Yu, Aristotelis Antonopoulos, Alan E. Friedman, Eryn K. Matich, G. Ekin Atilla-Gokcumen, Mehrab Nasirikenari, Joseph T. Lau, Anne Dell, Stuart M. Haslam, Roger A. Laine, Khushi L. Matta, Sriram Neelamegham

Faculty Publications

© 2018 Elsevier Ltd Small-molecule inhibitors of glycosylation can be applied in basic science studies, and clinical investigations as anti-inflammatory, anti-metastatic, and anti-viral therapies. This article demonstrates that thioglycosides represent a class of potent metabolic decoys that resist hydrolysis, and block E-selectin-dependent leukocyte adhesion in models of inflammation.

The Dinoflagellate Cyst Genera Achomosphaera Evitt 1963 And Spiniferites Mantell 1850 In Pliocene To Modern Sediments: A Summary Of Round Table Discussions, Kenneth Neil Mertens, Nicolas Van Nieuwenhove, Pieter R. Gurdebeke, Hilal Aydin, Kara Bogus, Manuel Bringué, Barrie Dale, Stijn De Schepper, Anne De Vernal, Marianne Ellegaard, Arjen Grothe, Haifeng Gu, Martin J. Head, Maija Heikkilä, Audrey Limoges, Laurent Londeix, Stephen Louwye, Fabienne Marret, Edwige Masure, Kazumi Matsuoka, Peta J. Mudie, Aurélie Penaud, Vera Pospelova, Andrea Michelle Price, Sofia Ribeiro, André Rochon, Francesca Sangiorgi, Michael Schreck, Vladimir Torres, Serdar Uzar, Gerard J.M. Versteegh, Sophie Warny, Karin Zonneveld

Faculty Publications

© 2018, © 2018 The Author(s). Published by AASP–The Palynological Society. We present a summary of two round-table discussions held during two subsequent workshops in Montreal (Canada) on 16 April 2014 and Ostend (Belgium) on 8 July 2015. Five species of the genus Achomosphaera Evitt 1963 and 33 of the genus Spiniferites Mantell 1850 emend. Sarjeant 1970 occuring in Pliocene to modern sediments are listed and briefly described along with remarks made by workshop participants. In addition, several holotypes and topotypes are reillustrated. Three species previously assigned to Spiniferites are here considered/accepted as belonging to other genera: Impagidinium inaequalis (Wall …

Spiniferites Cruciformis, Pterocysta Cruciformis And Galeacysta Etrusca: Morphology And Palaeoecology, Peta Mudie, André Rochon, Keith Richards, Shannon Ferguson, Sophie Warny

Faculty Publications

© 2018, © 2018 The Author(s). Published by AASP–The Palynological Society. Miocene to modern sediments of the Ponto-Caspian basins and Mediterranean Sea are uniquely distinguished by presence of gonyaulacacean cysts with ellipsoid to cruciform endocysts and highly variable ectocystal features, including pterate (wing-like) and galeate (helmet-like) outer wall layers. The term cruciform is defined to indicate cysts with concave epicyst and hypocyst surfaces and moderate dorsoventral flattening. These features may be morphological responses to salinity stress and some biometrical studies conclude that the cruciform Ponto-Caspian species Spiniferites cruciformis of Wall and Dale 1973 and Pterocysta cruciformis Rochon et al. 2003 …

Lateral Circulation In A Partially Stratified Tidal Inlet, Linlin Cui, Haosheng Huang, Chunyan Li, Dubravko Justic

Faculty Publications

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, …

Physicochemical And Ecotoxicological Assessment Of Biochar For Environmental Application, Maria Guillermina Cantou

LSU Doctoral Dissertations

Multiple benefits of biochar conversion and utilization, including soil carbon sequestration and environmental remediation, have been proposed by researchers. Biochar may be produced from a wide array of feedstocks and pyrolytic process conditions. This influences the final biochar composition, which includes the presence of potential pollutants that could ultimately result in detrimental environmental impacts. The major purpose of this research was to improve our understanding of potential unintended effects of biochar addition to the environment either as a potential source of toxicity towards organisms or as a material influencing availabilities of other soil contaminants. Biochars were produced from ten different …

Influence Of Analyzed Sequence Length On Parameters In Laryngeal High-Speed Videoendoscopy, Patrick Schlegel, Marion Semmler, Melda Kunduk, Michael Döllinger, Christopher Bohr, Anne Schützenberger

Faculty Publications

Laryngeal high-speed videoendoscopy (HSV) allows objective quantification of vocal fold vibratory characteristics. However, it is unknown how the analyzed sequence length affects some of the computed parameters. To examine if varying sequence lengths influence parameter calculation, 20 HSV recordings of healthy females during sustained phonation were investigated. The clinical prevalent Photron Fastcam MC2 camera with a frame rate of 4000 fps and a spatial resolution of 512 × 256 pixels was used to collect HSV data. The glottal area waveform (GAW), describing the increase and decrease of the area between the vocal folds during phonation, was extracted. Based on the …

Magnetic Field-Driven Convection For Directed Surface Patterning Of Colloids, Jin Gyun Lee, Vanel Porter, William A. Shelton, Bhuvnesh Bharti

Faculty Publications

Drying sessile droplets is a promising route to transform colloidal dispersions into surface coatings, which are widely used in material design and biochemical detection. However, directing the assembly of the particles within drying droplets and achieving surface patterns beyond the well-known coffee-ring formation remain a challenge. Here, we present a new principle of directing the assembly of nonmagnetic colloidal particles dispersed in a magnetic fluid and generating unusual surface patterns. We use the ability of ferrofluids to change phases with the application of magnetic fields to program the assembly of nonmagnetic microparticles present in drying sessile droplets. We show that …

Singularity Resolution In Anisotropic And Black Hole Spacetimes In Loop Quantum Cosmology, Sahil Saini

LSU Doctoral Dissertations

Loop quantum cosmology (LQC) has in recent years led to successful resolution of singularities in cosmological models while agreeing with general relativity in low curvature limit. Existence of a bounce and the possibility of an effective continuum description closely approximating the quantum evolution have been notable features of this singularity resolution. The effective spacetimes of loop quantized isotropic and Bianchi-I models have been shown to be geodesically complete and free from strong singularities. In this dissertation, we extend these results to effective loop quantized Bianchi-II, Bianchi-IX and Kantowski--Sachs models with arbitrary minimally coupled matter, and also explore the possibility of …

Temperature Transient Analysis For Reservoir Characterization, Yilin Mao

LSU Doctoral Dissertations

Recent developments in downhole temperature measurements open new alternatives contributing to reservoir characterization. In this dissertation, novel forward and inverse models to analyze production- and injection-induced temperature signals are developed for conventional and unconventional reservoir applications. Important limitations of the proposed models are addressed by accounting for fluid property variations and complex production strategies.

Forward modeling approaches involve making relevant assumptions that allow rigorous analytical solutions to be constructed using Laplace transform, Method of Characteristics, and control volume analysis. Our results of the analytical models are benchmarked with those from commercial numerical simulation software. Multiple possible scenarios of conventional reservoirs …

Musical Introductions To Cavalleria Rusticana: Giuseppe Perrotta's "Bozzetto Sinfonico" And Pietro Mascagni's "Preludio", Ronaldo Augusto Teles Dos Santos

LSU Doctoral Dissertations

Giovanni Verga’s Cavalleria rusticana has inspired a variety of musical works, among them Giuseppe Perrotta’s “Bozzetto sinfonico” (an overture to Verga’s play), and Pietro Mascagni’s Cavalleria rusticana (a one-act opera based on a libretto by Giovanni Targioni-Tozzetti and Guido Menasci). Each composition represents a genre on which scholarship is scarce: late nineteenth-century incidental music and the late nineteenth-century operatic prelude. Considering both Perrotta’s “Bozzetto sinfonico” and Mascagni’s “Preludio” as musical introductions to stage works, this study undertakes a complete hermeneutic analysis of both works (chapters 2 and 3). The analysis of Perrotta’s “Bozzetto sinfonico” is guided by a letter in …

Quantum Extension Of The Kruskal Spacetime, Abhay Ashtekar, Javier Olmedo, Parampreet Singh

Faculty Publications

A new description of macroscopic Kruskal black holes that incorporates the quantum geometry corrections of loop quantum gravity is presented. It encompasses both the "interior" region that contains classical singularities and the "exterior" asymptotic region. Singularities are naturally resolved by the quantum geometry effects of loop quantum gravity. The resulting quantum extension of spacetime has the following features: (i) It admits an infinite number of trapped, anti-trapped and asymptotic regions; (ii) All curvature scalars have uniform (i.e., mass independent) upper bounds; (iii) In the large mass limit, all asymptotic regions of the extension have the same ADM mass; (iv) In …

Measurement Of The Radial Mode Spectrum Of Photons Through A Phase-Retrieval Method, Saumya Choudhary, Rachel Sampson, Yoko Miyamoto, Omar S. Magaña-Loaiza, Seyed Mohammad Hashemi Rafsanjani, Mohammad Mirhosseini, Robert W. Boyd

Faculty Publications

We propose and demonstrate a simple and easy-to-implement projective-measurement protocol to determine the radial index p of a Laguerre–Gaussian (LGlp) mode. Our method entails converting any specified high-order LG0p mode into a near-Gaussian distribution that matches the fundamental mode of a single-mode fiber (SMF) through the use of two phase screens (unitary transforms) obtained by applying a phase-retrieval algorithm. The unitary transforms preserve the orthogonality of modes before the SMF and guarantee that our protocol can, in principle, be free of crosstalk. We measure the coupling efficiency of the transformed radial modes to the SMF for different pairs of phase …

Triple Sulfur Isotope Relationships During Sulfate-Driven Anaerobic Oxidation Of Methane, Shanggui Gong, Yongbo Peng, Huiming Bao, Dong Feng, Xiaobin Cao, Peter W. Crockford, Duofu Chen

Faculty Publications

© 2018 Elsevier B.V. Sulfate-driven anaerobic oxidation of methane (SD-AOM) plays a critical role in regulating the global methane budget. Determination of the diagnostic triple isotope exponent θ33 (≡ln33⁡α/ln34⁡α) for SD-AOM can help to identify and quantify microbial sulfate reduction via SD-AOM in the environment. The history of Earth's surface redox conditions can also be examined through the measurement of triple sulfur isotope compositions in sedimentary rocks. Due to difficulties in both culturing anaerobic methanotrophs and sampling pore-water sulfate in SD-AOM-dominated environments, however, the θ33 values for the processes of SD-AOM have not been constrained. We propose that a set …

Classical And Quantum Aspects Of Electric-Magnetic Duality Rotations In Curved Spacetimes, Ivan Agullo, Adrian Del Rio, Jose Navarro-Salas

Faculty Publications

It is well known that the source-free Maxwell equations are invariant under electric-magnetic duality rotations, F→Fcosθ+F sinθ. These transformations are indeed a symmetry of the theory in the Noether sense. The associated constant of motion is the difference in the intensity between self-dual and anti-self-dual components of the electromagnetic field or, equivalently, the difference between the right and left circularly polarized components. This conservation law holds even if the electromagnetic field interacts with an arbitrary classical gravitational background. After reexamining these results, we discuss whether this symmetry is maintained when the electromagnetic field is quantized. The answer is in the …

Triple Sulfur Isotope Relationships During Sulfate-Driven Anaerobic Oxidation Of Methane, Shanggui Gong, Yongbo Peng, Huiming Bao, Dong Feng, Xiaobin Cao, Peter W. Crockford, Duofu Chen

Faculty Publications

© 2018 Elsevier B.V. Sulfate-driven anaerobic oxidation of methane (SD-AOM) plays a critical role in regulating the global methane budget. Determination of the diagnostic triple isotope exponent θ33 (≡ln33⁡α/ln34⁡α) for SD-AOM can help to identify and quantify microbial sulfate reduction via SD-AOM in the environment. The history of Earth's surface redox conditions can also be examined through the measurement of triple sulfur isotope compositions in sedimentary rocks. Due to difficulties in both culturing anaerobic methanotrophs and sampling pore-water sulfate in SD-AOM-dominated environments, however, the θ33 values for the processes of SD-AOM have not been constrained. We propose that a set …

Selective Electrocatalytic Reduction Of Co2 Into Co At Small, Thiol-Capped Au/Cu Nanoparticles, Douglas R. Kauffman, Dominic R. Alfonso, De Nyago Tafen, Congjun Wang, Yunyun Zhou, Yang Yu, Jonathan W. Lekse, Xingyi Deng, Vanessa Espinoza, Jamie Trindell, Oshadha K. Ranasingha, Amitava Roy, Jun Sik Lee, Huolin L. Xin

Faculty Publications

The electrochemical CO reduction reaction (CO RR) is a promising approach for converting fossil fuel emissions into environmentally sustainable chemicals and fuels. The ability to control the surface structure of CO RR nanocatalysts provides an opportunity to tune product selectivity. Bimetallic gold-copper catalysts have been identified as emerging electrocatalyst candidates, but Cu incorporation typically lowers product selectivity compared with pure Au. Here we show sustained CO selectivity and activity up to 49% Cu content in small (<2 >nm), thiol-capped Au/Cu nanoparticles (NPs). Bimetallic NPs containing 49% Cu selectivity converted CO into CO with 100 ± 6% CO Faradaic efficiency and …

Selective Electrocatalytic Reduction Of Co2 Into Co At Small, Thiol-Capped Au/Cu Nanoparticles, Douglas R. Kauffman, Dominic R. Alfonso, De Nyago Tafen, Congjun Wang, Yunyun Zhou, Yang Yu, Jonathan W. Lekse, Xingyi Deng, Vanessa Espinoza, Jamie Trindell, Oshadha K. Ranasingha, Amitava Roy, Jun Sik Lee, Huolin L. Xin

Faculty Publications

The electrochemical CO reduction reaction (CO RR) is a promising approach for converting fossil fuel emissions into environmentally sustainable chemicals and fuels. The ability to control the surface structure of CO RR nanocatalysts provides an opportunity to tune product selectivity. Bimetallic gold-copper catalysts have been identified as emerging electrocatalyst candidates, but Cu incorporation typically lowers product selectivity compared with pure Au. Here we show sustained CO selectivity and activity up to 49% Cu content in small (<2 >nm), thiol-capped Au/Cu nanoparticles (NPs). Bimetallic NPs containing 49% Cu selectivity converted CO into CO with 100 ± 6% CO Faradaic efficiency and …

Unresolved Gamma-Ray Sky Through Its Angular Power Spectrum, M. Ackermann, M. Ajello, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi, R. D. Blandford, R. Bonino, E. Bottacini, J. Bregeon, P. Bruel, R. Buehler, E. Burns, S. Buson, R. A. Cameron, R. Caputo, P. A. Caraveo, E. Cavazzuti, S. Chen, G. Chiaro, S. Ciprini, D. Costantin, A. Cuoco, S. Cutini, F. D'Ammando, P. De La Torre Luque, F. De Palma, A. Desai, S. W. Digel, N. Di Lalla, M. Di Mauro

Faculty Publications

The gamma-ray sky has been observed with unprecedented accuracy in the last decade by the Fermi -large area telescope (LAT), allowing us to resolve and understand the high-energy Universe. The nature of the remaining unresolved emission [unresolved gamma-ray background (UGRB)] below the LAT source detection threshold can be uncovered by characterizing the amplitude and angular scale of the UGRB fluctuation field. This Letter presents a measurement of the UGRB autocorrelation angular power spectrum based on eight years of Fermi-LAT Pass 8 data products. The analysis is designed to be robust against contamination from resolved sources and noise systematics. The sensitivity …

Teaching Cfd As A Pedagogy For Architectural Design: A Qualitative Study Based On Interviews, Soo Jeong Jo

Faculty Publications

No abstract provided.

Changing Land-Use From Pinus Elliottii To Eucalyptus Bentamii In Southwest Louisiana Affects Understory Vegetation Richness, Diversity, And Functional Diversity Patterns, Andrea De Stefano

LSU Doctoral Dissertations

In the Western Gulf region of the United States cold-tolerant eucalyptus have been explored as pulpwood feedstock. However, non-native plantations may alter understory species diversity, modifying environmental conditions and soil characteristics. Few studies have compared eucalyptus plantations with other ecosystems to understand the impacts of converting these land uses on understory vegetation in the United States. Three plantations were selected: (1) slash pine (Pinus elliottii) established in 2008, (2) slash pine established in 2013, and (3) and Camden white gum (Eucalyptus benthamii) established in 2013. The objectives of this study were to: (1) investigate potential changes …

A 2d Tide-Averaged Model For The Long-Term Evolution Of An Idealized Tidal Basin-Inlet-Delta System, Giulio Mariotti, Shamim Murshid

Faculty Publications

We present a model for the morphodynamics of tidal basin-inlet-delta systems at the centennial time scales. Tidal flow is calculated through a friction dominated model, with a semi-empirical correction to account for the advection of momentum. Transport of non-cohesive sediment (sand) is simulated through tidal dispersion, i.e., without explicitly resolving sediment advection. Sediment is also transported downslope through a bed elevation diffusion process. The model is compared to a high-resolution tide-resolving model (Delft3D) with good agreement for different hydrodynamic and sedimentary settings. The model has low sensitivity with respect to temporal and spatial discretization. For the same spatial resolution, the …

Numerical Simulations Of Mass Transfer In Binaries With Bipolytropic Components, Kundan Kadam, Patrick M. Motl, Dominic C. Marcello, Juhan Frank, Geoffrey C. Clayton

Faculty Publications

We present the first self-consistent three-dimensional study of hydrodynamic simulations of mass transfer in binary systems with bipolytropic (composite polytropic) components. In certain systems, such as contact binaries or during the common-envelope phase, the core- envelope structure of the stars plays an important role in binary interactions. In this paper, we compare mass transfer simulations of bipolytropic binary systems in order to test the suitability of our numerical tools for investigating the dynamical behaviour of such systems. The initial, equilibrium binary models possess a core-envelope structure and are obtained using the bipolytropic self-consistent field technique. We conduct mass transfer simulations …

The Distances To Novae As Seen By Gaia, Bradley E. Schaefer

Faculty Publications

The Gaia spacecraft has just released a large set of parallaxes, including 41 novae for which the fractional error is < 30 per cent. I have used these to evaluate the accuracy and bias of the many priormethods for getting nova distances. The best of the priormethods is the geometrical parallaxes from Hubble Space Telescope for just four novae, although the real error bars are 3× larger than stated. The canonical method for prior nova distances has been the expansion parallaxes from the nova shells, but this method is found to have real 1σ uncertainty of 0.95 mag in the distance modulus, and the prior quoted error bars are on average 3.6× worse than advertised. The many variations on the 'maximum-magnitude-rate-of-decline' (MMRD) relation are all found to be poor, too poor to be useable, and even to be non-applicable for five out of seven samples of nova, so the MMRD should no longer be used. The prior method of using various measures of the extinction from the interstellar medium have been notoriously bad, but now a new version by Özdönmez and coworkers has improved this to an unbiased method with 1σ uncertainty of 1.14 mag in the distance modulus. For the future, I recommend in order (1) using the Gaia parallax, (2) using the catalogue of Özdönmez, (3) using Mmax = -7.0 ± 1.4 mag as an empirical method of poor accuracy, and (4) if none of these methods is available, then to not use the nova for purposes where a distance is needed.

Preparation Of Cellulose Nanofibers From Bamboo Using Microwave Liquefaction, Jiulong Xie

LSU Doctoral Dissertations

Cellulose nanofibers isolated from renewable lignocellulosic biomass are considered highly promising fillers in preparing sustainable composite materials. Although previous technologies on the production of cellulose nanofibers were encouraging, drawbacks such as chemical reagent, high energy consumption, time-consumption, and equipment degradation have limited these techniques for practical applications. In this work, bamboo particles were subjected to microwave liquefaction process and the liquefied bamboo residues were characterized to have a better understanding of the liquefaction behaviors of bamboo. Then, the microwave liquefaction process was optimized for the production of cellulose raw materials and the isolation of cellulose nanofibers. The lignin fraction fractionated …

Men’S Jeans Fit Based On Body Shape Categorization, Elahe Saeidi

LSU Doctoral Dissertations

The purpose of this study was to categorize lower body shape in men and to investigate the interplay between body shape and fitting issues appearing in men’s jeans. More specifically, the goal of the study was to improve apparel fit based on body shape. The detailed objectives of the study were to: (1) Categorize male body shapes using statistical analysis; (2) use 3D virtual fitting technology to assess fit and develop a shape-driven pants block pattern for each body shape.

This quantitative study was conducted in three stages: (1) categorizing the body shape of 1420 male scans, aged 18-35, from …

A Poetics Of Temperance: Gender, Genre, And Meaning-Making In Early Modern England, Cristina Maria Rosell

LSU Doctoral Dissertations

For several hundred years, the scholarly discussion of temperance was dominated by the legacy of classical models. This dissertation, titled A Poetics of Temperance: Gender, Genre, and Meaning-Making in Early Modern England, develops said discussion in a new way by forging a language about ethics and aesthetics into a poetics of temperance. The term poiesis derives from Greek and signifies “to make, create, produce” (OED). Accordingly, Aristotle uses the Greek poietes, “from which our word ‘poet’ derives,” to denote a “maker” (Murray xxxii). In brief, this project understands the role of women in emergent genres as …

Quantum Transfiguration Of Kruskal Black Holes, Abhay Ashtekar, Javier Olmedo, Parampreet Singh

Faculty Publications

We present a new effective description of macroscopic Kruskal black holes that incorporates corrections due to quantum geometry effects of loop quantum gravity. It encompasses both the "interior" region that contains classical singularities and the "exterior" asymptotic region. Singularities are naturally resolved by the quantum geometry effects of loop quantum gravity, and the resulting quantum extension of the full Kruskal space-time is free of all the known limitations of previous investigations of the Schwarzschild interior. We compare and contrast our results with these investigations and also with the expectations based on the AdS/CFT duality.

Performers As Teachers: A Case Study On How Two El Sistema-Inspired Teaching Artists' Performance Identities Manifested During Instruction, Alicia J. Monroe

LSU Doctoral Dissertations

Kids’ Orchestra (KO) is an afterschool El Sistema-inspired program in Baton Rouge, Louisiana with a Title I school district, which employs a high percentage of musicians who identify strongly as performers. During the 2017-2018 school year, 52 of 59 KO teaching artists were considered professional musicians with training in music performance, with no educational background and/or prior experience in music education.

The recent development of ESI programs across the United States has fostered claims of using music education as a way to bring social change to the community it works in. Research exploring the specific nature of the pedagogy …