Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2941 - 2970 of 15246

Full-Text Articles in Entire DC Network

Gender Contexts, Dowry And Women's Health In India: A National Multilevel Longitudinal Analysis, Samuel Stroope, Rhiannon A. Kroeger, Jiabin Fan Jan 2020

Gender Contexts, Dowry And Women's Health In India: A National Multilevel Longitudinal Analysis, Samuel Stroope, Rhiannon A. Kroeger, Jiabin Fan

Faculty Publications

Gender-biased contexts may impact women's lives across a variety of domains. This study examined whether changes in district prevalence of a salient gendered practice - dowry - are associated with changes in poor health for women in India. Two waves of national multilevel panel data were used to assess the relationship between changes in district-level dowry prevalence and changes in self-rated health for 23,785 ever-married women aged 15-50 years. Increased dowry prevalence was found to be associated with increased poor self-rated health for women. This relationship remained when controlling for potentially confounding factors including household socioeconomic status, caste, infrastructure, mobility …


Optimization Of Uas-Based High-Throughput Phenotyping To Estimate Plant Health And Grain Yield In Sorghum, Giovanni Galli, David W. Horne, S. Delroy Collins, Jinha Jung, Anjin Chang, Roberto Fritsche-Neto, William L. Rooney Jan 2020

Optimization Of Uas-Based High-Throughput Phenotyping To Estimate Plant Health And Grain Yield In Sorghum, Giovanni Galli, David W. Horne, S. Delroy Collins, Jinha Jung, Anjin Chang, Roberto Fritsche-Neto, William L. Rooney

Faculty Publications

High-throughput phenotyping (HTP) has enabled the acquisition of vast amounts of data. Therefore, finding the most informative phenological stage(s) and high-throughput traits could lead to significant optimization of HTP-assisted selection. An investigation as to when phenotypic data should be collected and how it should be processed from unmanned aerial system (UAS) imagery for the optimization and assessment of two primary traits in grain sorghum [Sorghum bicolor (L). Moench], namely, grain yield and plant health (based on anthracnose scores) was conducted. By evaluating multiple flight dates across the growing season via multispectral UAS-based imagery, a set of scenarios composed of combinations …


Soil-App: A Tool For Soil Analysis Interpretation, Filipe Inácio Matias, José Felipe Gonzaga Sabadin, Lílian Angélica Moreira, Marcos Henrique Feresin Gomes, Acácio Bezerra De Mira, Roberto Fritsche-Neto, Rafael Otto Jan 2020

Soil-App: A Tool For Soil Analysis Interpretation, Filipe Inácio Matias, José Felipe Gonzaga Sabadin, Lílian Angélica Moreira, Marcos Henrique Feresin Gomes, Acácio Bezerra De Mira, Roberto Fritsche-Neto, Rafael Otto

Faculty Publications

New apps have changed the traditional way of learning and teaching; they are also applied as a quickly executed and effective method in agriculture. Soil-app is a web application with a friendly click-point interface built through packages lodged in R software. The app is an advanced model of an open-source platform to support teaching and learning activities in soil analyses and fertilizer recommendations. Soil-app includes soil test interpretation, soil amendment calculations (lime and gypsum), the fertilizer rate for the most important crops in Brazil, an NPK blend calculator, and NPK blend evaluation. It also includes experimental statistical analysis as applied …


Open Data In Cultural Heritage Institutions: Can We Be Better Than Data Brokers?, Sl Ziegler Jan 2020

Open Data In Cultural Heritage Institutions: Can We Be Better Than Data Brokers?, Sl Ziegler

Faculty Publications

Treating collections in cultural institutions as data encourages novel approaches to the use of historic collections. To reframe collections as data is to focus on how digitized collection material, collection metadata, and transcriptions can be used and reused for various types of computational analysis. Scholars active in the field of digital humanities have long taken advantage of computational data. This paper focuses on the work of cultural heritage institutions, which are increasingly offering collections as data. This paper outlines the collections as data project and examines specific examples of cultural institutions active in this space. The paper then details the …


The Impeachers: The Trial Of Andrew Johnson And The Dream Of A Just Nation, Mark A. Neels Jan 2020

The Impeachers: The Trial Of Andrew Johnson And The Dream Of A Just Nation, Mark A. Neels

Civil War Book Review

Impeachment has been receiving much attention these days. I speak not of current events, however. As the United States continues its commemoration of the sesquicentennial of the Reconstruction Era, and as new scholarly works appear on all manner of subjects from that era, it is to be expected that impeachment would get a much needed reexamination. To that end, Brenda Wineapple’s The Impeachers is a welcome—and one might say timely—addition to the emerging scholarship on this dark period in our nation’s past.


The Three-Cornered War: The Union, The Confederacy, And Native Peoples In The Fight For The West, Alexandra Elise Stern Jan 2020

The Three-Cornered War: The Union, The Confederacy, And Native Peoples In The Fight For The West, Alexandra Elise Stern

Civil War Book Review

In the early 1860s, far from the American Civil War’s traditional Eastern and even “Western” theaters, New Mexico Territory quickly became an American, Confederate, Diné, and Apache battleground for control of the region. Despite its strategic value to all parties and the blood spilt to win it, the Southwest has remained a geographically and intellectually distant frontier in most historians’ conceptions of the war. Pushing back against the region’s neglected status in her latest book, The Three-Cornered War: The Union, The Confederacy, and the Native Peoples in the Fight for the West, Megan Kate Nelson effectively brings the Far …


The Battle Of The Wilderness In Myth And Memory: Reconsidering Virginia’S Most Notorious Civil War Battlefield, Chris Mackowski Jan 2020

The Battle Of The Wilderness In Myth And Memory: Reconsidering Virginia’S Most Notorious Civil War Battlefield, Chris Mackowski

Civil War Book Review

Being “lost in the Wilderness” is an existential experience as old as the Bible, and therefore it’s no surprise that no Civil War landscape has more metaphoric power than Virginia’s Wilderness. The 1864 battlefield offers a unique Civil War twist that writers have taken advantage of since they started writing narratives about the battle. But aside from Stephen Cushman’s 1999 Bloody Promenade, no writer has examined the mythic power of the Wilderness as a thing unto itself. Adam H. Petty’s systematic study, The Battle of the Wilderness in Myth and Memory, casts light into that dark foliage and, …


Liberty And Slavery: European Separatists, Southern Secession, And The American Civil War, William Nester Jan 2020

Liberty And Slavery: European Separatists, Southern Secession, And The American Civil War, William Nester

Civil War Book Review

Among the Civil War subfields that remain relatively underexplored is trans-Atlantic influences. Niels Eichhorn, an assistant professor at Middle Georgia State University, makes a fine contribution to that subfield with his book Liberty and Slavery, wherein he explores the relationship between southern secessionism and European separatism. He compares the separatist movements against brutal subjection by Poles from Russia, Irish Catholics from Britain, Hungarians from Austria, Germans from Denmark in 1830 or 1848 with the southern slave state secession to form the Confederate States of America in 1861


Asian Summer Monsoon Influence On Chemical Weathering And Sediment Provenance Determined By Clay Mineral Analysis From The Indus Submarine Canyon, Yuting Li, Peter D. Clift, Richard W. Murray, Elise Exnicios, Thomas Ireland, Philipp Böning Jan 2020

Asian Summer Monsoon Influence On Chemical Weathering And Sediment Provenance Determined By Clay Mineral Analysis From The Indus Submarine Canyon, Yuting Li, Peter D. Clift, Richard W. Murray, Elise Exnicios, Thomas Ireland, Philipp Böning

Faculty Publications

© Copyright University of Washington. Published by Cambridge University Press, 2019. Clay minerals from the Indus Canyon and eastern clinoform since ∼12 ka are uniformly rich in smectite and illite, similar to those from the Holocene Indus flood plains. A systematic enrichment of smectite in the proximal delta compared to the canyon and eastern clinoform argues for preferential capture of smectite close to the river mouth since ∼12 ka. There is a rapid shift to a more smectite-rich assemblage in the canyon and eastern clinoform after ∼5 ka. This change is probably caused by a change in sediment source, with …


Slowing Rates Of Regional Exhumation In The Western Himalaya: Fission Track Evidence From The Indus Fan, Peng Zhou, Andrew Carter, Yuting Li, Peter D. Clift Jan 2020

Slowing Rates Of Regional Exhumation In The Western Himalaya: Fission Track Evidence From The Indus Fan, Peng Zhou, Andrew Carter, Yuting Li, Peter D. Clift

Faculty Publications

© Cambridge University Press 2019. We use apatite fission track ages from sediments recovered by the International Ocean Discovery Program in the Laxmi Basin, Arabian Sea, to constrain exhumation rates in the western Himalaya and Karakoram since 15.5 Ma. With the exception of a Triassic population in the youngest 0.93 Ma samples supplied from western Peninsular India, apatite fission track ages are overwhelmingly Cenozoic, largely <25 >Ma, consistent with both a Himalaya-Karakoram source and rapid erosion. Comparison of the minimum cooling age of each sample with depositional age (lag time) indicates an acceleration in exhumation between 7.8 and 7.0 Ma, with …


Reachable Sets For Safe, Real-Time Manipulator Trajectory Design, Patrick Holmes, Shreyas Kousik, Bohao Zhang, Daphna Raz, Corina Barbalata, Matthew Johnson-Roberson, Ram Vasudevan Jan 2020

Reachable Sets For Safe, Real-Time Manipulator Trajectory Design, Patrick Holmes, Shreyas Kousik, Bohao Zhang, Daphna Raz, Corina Barbalata, Matthew Johnson-Roberson, Ram Vasudevan

Faculty Publications

For robotic arms to operate in arbitrary environments, especially near people, it is critical to certify the safety of their motion planning algorithms. However, there is often a trade-o↵ between safety and real-time performance; one can either carefully design safe plans, or rapidly generate potentially-unsafe plans. This work presents a receding-horizon, real-time trajectory planner with safety guarantees, called ARMTD (Au-tonomous Reachability-based Manipulator Trajectory Design). The method first computes (o✏ine) a reachable set of parameterized trajectories for each joint of an arm. Each trajectory includes a fail-safe maneuver (braking to a stop). At runtime, in each receding-horizon planning iteration, ARMTD constructs …


Peak Pressures On Low Rise Buildings: Cfd With Les Versus Full Scale And Wind Tunnel Measurements, Aly Mousaad Aly, Hamzeh Gol-Zaroudi Jan 2020

Peak Pressures On Low Rise Buildings: Cfd With Les Versus Full Scale And Wind Tunnel Measurements, Aly Mousaad Aly, Hamzeh Gol-Zaroudi

Faculty Publications

This paper focuses on the processes of wind flow in the atmospheric boundary layer, to produce realistic full-scale pressures for the design of low-rise buildings. CFD with LES turbulence closure is implemented on a scale 1:1 prototype building. A proximity study was executed computationally in CFD with LES that suggests new recommendations on the computational domain size, in front of a building model, apart from common RANS-based guidelines (e.g. COST and AIJ). Our findings suggest a location of the test building, different from existing guidelines, and the inflow boundary proximity influences pressure correlation and reproduction of peak loads. The CFD …


Methods Of Making Polypeptides, Donghui Zhang, Jinbao Cao, Brandon Chan, David Siefker Dec 2019

Methods Of Making Polypeptides, Donghui Zhang, Jinbao Cao, Brandon Chan, David Siefker

College of Science Patents

Various embodiments disclosed relate to a method of forming a polypeptide. The method includes contacting a first amino acid-derived N-thiocarboxyanhydrosulfide monomer as a crystalline solid with a polymerization initiator (e.g., in an alkane suspension) to give a polypeptide product. The method further includes contacting the polypeptide product with a second amino acid-derived N-thiocarboxyanhydrosulfide monomer in an alkane suspension.


Measurement Of Neutrino And Antineutrino Neutral-Current Quasielasticlike Interactions On Oxygen By Detecting Nuclear Deexcitation Γ Rays, K. Abe, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, B. Bourguille Dec 2019

Measurement Of Neutrino And Antineutrino Neutral-Current Quasielasticlike Interactions On Oxygen By Detecting Nuclear Deexcitation Γ Rays, K. Abe, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, B. Bourguille

Faculty Publications

Neutrino- A nd antineutrino-oxygen neutral-current quasielasticlike interactions are measured at Super-Kamiokande using nuclear deexcitation γ rays to identify signal-like interactions in data from a 14.94(16.35)×1020 protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are âσν-NCQEâ


Characterization Of An Extensive Interface On Vitronectin For Binding To Plasminogen Activator Inhibitor-1: Adoption Of Structure In An Intrinsically Disordered Region, Letitia O. Puster, Christopher B. Stanley, Vladimir N. Uversky, Joseph E. Curtis, Susan Krueger, Yuzhuo Chu, Cynthia B. Peterson Dec 2019

Characterization Of An Extensive Interface On Vitronectin For Binding To Plasminogen Activator Inhibitor-1: Adoption Of Structure In An Intrinsically Disordered Region, Letitia O. Puster, Christopher B. Stanley, Vladimir N. Uversky, Joseph E. Curtis, Susan Krueger, Yuzhuo Chu, Cynthia B. Peterson

Faculty Publications

Copyright © 2019 American Chemical Society. Small-angle neutron scattering (SANS) measurements were pursued to study human vitronectin, a protein found in tissues and the circulation that regulates cell adhesion/migration and proteolytic cascades that govern hemostasis and pericellular proteolysis. Many of these functions occur via interactions with its binding partner, plasminogen activator inhibitor-1 (PAI-1), the chief inhibitor of proteases that lyse and activate plasminogen. We focused on a region of vitronectin that remains uncharacterized from previous X-ray scattering, nuclear magnetic resonance, and computational modeling approaches and which we propose is involved in binding to PAI-1. This region, which bridges the N-terminal …


Evidence For Late-Stage Eruptive Mass Loss In The Progenitor To Sn2018gep, A Broad-Lined Ic Supernova: Pre-Explosion Emission And A Rapidly Rising Luminous Transient, Anna Y.Q. Ho, Daniel A. Goldstein, Steve Schulze, David K. Khatami, Daniel A. Perley, Mattias Ergon, Avishay Gal-Yam, Alessandra Corsi, Igor Andreoni, Cristina Barbarino, Eric C. Bellm, Nadia Blagorodnova, Joe S. Bright, E. Burns, S. Bradley Cenko, Virginia Cunningham, Kishalay De, Richard Dekany, Alison Dugas, Rob P. Fender, Claes Fransson, Christoffer Fremling, Adam Goldstein, Matthew J. Graham, David Hale, Assaf Horesh, Tiara Hung, Mansi M. Kasliwal, N. Paul M. Kuin, S. R. Kulkarni, Thomas Kupfer, Ragnhild Lunnan, Frank J. Masci Dec 2019

Evidence For Late-Stage Eruptive Mass Loss In The Progenitor To Sn2018gep, A Broad-Lined Ic Supernova: Pre-Explosion Emission And A Rapidly Rising Luminous Transient, Anna Y.Q. Ho, Daniel A. Goldstein, Steve Schulze, David K. Khatami, Daniel A. Perley, Mattias Ergon, Avishay Gal-Yam, Alessandra Corsi, Igor Andreoni, Cristina Barbarino, Eric C. Bellm, Nadia Blagorodnova, Joe S. Bright, E. Burns, S. Bradley Cenko, Virginia Cunningham, Kishalay De, Richard Dekany, Alison Dugas, Rob P. Fender, Claes Fransson, Christoffer Fremling, Adam Goldstein, Matthew J. Graham, David Hale, Assaf Horesh, Tiara Hung, Mansi M. Kasliwal, N. Paul M. Kuin, S. R. Kulkarni, Thomas Kupfer, Ragnhild Lunnan, Frank J. Masci

Faculty Publications

We present detailed observations of ZTF18abukavn (SN2018gep), discovered in high-cadence data from the Zwicky Transient Facility as a rapidly rising (1.4 ± 0.1 mag hr-1) and luminous (Mg,peak = -20 mag) transient. It is spectroscopically classified as a broad-lined stripped-envelope supernova (Ic-BL SN). The high peak luminosity (Lbol ≳ 3 × 1044 erg s-1), the short rise time (trise = 3 days in g band), and the blue colors at peak (g-r ∼ -0.4) all resemble the high-redshift Ic-BL iPTF16asu, as well as several other unclassified fast transients. The early discovery of SN2018gep (within an hour of shock breakout) enabled …


New Loop Quantum Cosmology Modifications From Gauge-Covariant Fluxes, Klaus Liegener, Parampreet Singh Dec 2019

New Loop Quantum Cosmology Modifications From Gauge-Covariant Fluxes, Klaus Liegener, Parampreet Singh

Faculty Publications

Loop quantum cosmology is a symmetry reduced quantization of cosmological spacetimes based on loop quantum gravity. While it has been successful in resolution of various cosmological singularities and connecting Planck scale physics to phenomenology, its connection with loop quantum gravity has remained elusive. It is therefore important to integrate more and more features of the full theory into this framework and understand the reliability of physical predictions. In particular, if one wishes to connect the effective Hamiltonian in loop quantum cosmology to an expectation value of the scalar constraint operator in suitable coherent states for the full theory, one has …


Some Physical Implications Of Regularization Ambiguities In Su(2) Gauge-Invariant Loop Quantum Cosmology, Klaus Liegener, Parampreet Singh Dec 2019

Some Physical Implications Of Regularization Ambiguities In Su(2) Gauge-Invariant Loop Quantum Cosmology, Klaus Liegener, Parampreet Singh

Faculty Publications

The way physics of loop quantum gravity is affected by the underlying quantization ambiguities is an open question. We address this issue in the context of loop quantum cosmology using gauge-covariant fluxes. Consequences are explored for two choices of regularization parameters: μ0 and μ in the presence of a positive cosmological constant, and two choices of regularizations of the Hamiltonian constraint in loop quantum cosmology: The standard and the Thiemann regularization. We show that novel features of singularity resolution and bounce, occurring due to gauge-covariant fluxes, exist also for Thiemann-regularized dynamics. The μ0 scheme is found to be unviable as …


A New Climbing Shrew From Sulawesi Highlights The Tangled Taxonomy Of An Endemic Radiation, Jacob A. Esselstyn, Anang S. Achmadi, Heru Handika, Thomas C. Giarla, Kevin C. Rowe Dec 2019

A New Climbing Shrew From Sulawesi Highlights The Tangled Taxonomy Of An Endemic Radiation, Jacob A. Esselstyn, Anang S. Achmadi, Heru Handika, Thomas C. Giarla, Kevin C. Rowe

Faculty Publications

We describe a new species of Crocidura (Soricidae) from Sulawesi Island, Indonesia, documenting its novelty with both genetic and morphological characters. The new species is widespread on the island, with vouchered records from nine general localities distributed among five of the island's areas of endemism. Morphologically, the new species is readily distinguished from all other described Sulawesi Crocidura by its intermediate body size, gray pelage, and long, hairy tail. The new species was mainly captured in pitfalls placed in the ground, but we also obtained evidence that it readily climbs trees and may be scansorial in its locomotor habits. Populations …


Divergent Trophic Responses Of Sympatric Penguin Species To Historic Anthropogenic Exploitation And Recent Climate Change, Kelton W. Mcmahon, Chantel I. Michelson, Tom Hart, Matthew D. Mccarthy, William P. Patterson, Michael J. Polito Dec 2019

Divergent Trophic Responses Of Sympatric Penguin Species To Historic Anthropogenic Exploitation And Recent Climate Change, Kelton W. Mcmahon, Chantel I. Michelson, Tom Hart, Matthew D. Mccarthy, William P. Patterson, Michael J. Polito

Faculty Publications

No abstract provided.


Transcriptome-Wide Association Study Identifies Putative Elicitors/Suppressor Of Puccinia Graminis F. Sp. Tritici That Modulate Barley Rpg4-Mediated Stem Rust Resistance, Roshan Sharma Poudel, Jonathan Richards, Subidhya Shrestha, Shyam Solanki, Robert Brueggeman Dec 2019

Transcriptome-Wide Association Study Identifies Putative Elicitors/Suppressor Of Puccinia Graminis F. Sp. Tritici That Modulate Barley Rpg4-Mediated Stem Rust Resistance, Roshan Sharma Poudel, Jonathan Richards, Subidhya Shrestha, Shyam Solanki, Robert Brueggeman

Faculty Publications

Background: Stem rust is an economically important disease of wheat and barley. However, studies to gain insight into the molecular basis of these host-pathogen interactions have primarily focused on wheat because of its importance in human sustenance. This is the first extensive study utilizing a transcriptome-wide association mapping approach to identify candidate Puccinia graminis f. sp. tritici (Pgt) effectors/suppressors that elicit or suppress barley stem rust resistance genes. Here we focus on identifying Pgt elicitors that interact with the rpg4-mediated resistance locus (RMRL), the only effective source of Pgt race TTKSK resistance in barley. Results: Thirty-seven Pgt isolates showing differential …


Microcanonical Analysis Of Boltzmann And Gibbs Entropies In Trapped Cold Atomic Gases, Kenneth J. Higginbotham, Daniel E. Sheehy Dec 2019

Microcanonical Analysis Of Boltzmann And Gibbs Entropies In Trapped Cold Atomic Gases, Kenneth J. Higginbotham, Daniel E. Sheehy

Faculty Publications

We analyze a gas of noninteracting fermions confined to a one-dimensional harmonic oscillator potential, with the aim of distinguishing between two proposed definitions of the thermodynamic entropy in the microcanonical ensemble, namely the standard Boltzmann entropy and the Gibbs (or volume) entropy. The distinction between these two definitions is crucial for systems with an upper bound on allowed energy levels, where the Boltzmann definition can lead to the notion of negative absolute temperature. Although negative temperatures do not exist for the system of fermions studied here, we still find a significant difference between the Boltzmann and Gibbs entropies, and between …


Monitoring The Growth Dynamics Of Colloidal Gold-Silver Core-Shell Nanoparticles Using In Situ Second Harmonic Generation And Extinction Spectroscopy, Jeewan C. Ranasinghe, Asela S. Dikkumbura, Prakash Hamal, Min Chen, Rami A. Khoury, Holden T. Smith, Kenneth Lopata, Louis H. Haber Dec 2019

Monitoring The Growth Dynamics Of Colloidal Gold-Silver Core-Shell Nanoparticles Using In Situ Second Harmonic Generation And Extinction Spectroscopy, Jeewan C. Ranasinghe, Asela S. Dikkumbura, Prakash Hamal, Min Chen, Rami A. Khoury, Holden T. Smith, Kenneth Lopata, Louis H. Haber

Faculty Publications

© 2019 Author(s). The growth dynamics of gold-silver core-shell (Au@Ag) nanoparticles are studied using in situ time-dependent second harmonic generation (SHG) and extinction spectroscopy to investigate the nanoparticle shell formation. The silver shell is grown by reduction of silver cations onto a 14 nm gold core using ascorbic acid in colloidal aqueous solution under varying reaction concentrations producing Au@Ag nanoparticles of final sizes ranging from 51 to 78 nm in diameter. The in situ extinction spectra show a rapid increase in intensity on the timescale of 5-6 s with blue shifting and narrowing of the plasmonic peak during the silver …


Exact Isovector Pairing In A Shell-Model Framework: Role Of Proton-Neutron Correlations In Isobaric Analog States, M. E. Miora, K. D. Launey, D. Kekejian, F. Pan, J. P. Draayer Dec 2019

Exact Isovector Pairing In A Shell-Model Framework: Role Of Proton-Neutron Correlations In Isobaric Analog States, M. E. Miora, K. D. Launey, D. Kekejian, F. Pan, J. P. Draayer

Faculty Publications

We utilize a nuclear shell model Hamiltonian with only two adjustable parameters to generate, for the first time, exact solutions for pairing correlations for light to medium-mass nuclei, including the challenging proton-neutron pairs, while also identifying the primary physics involved. In addition to single-particle energy and Coulomb potential terms, the shell model Hamiltonian consists of an isovector T=1 pairing interaction and an average proton-neutron isoscalar T=0 interaction, where the T=0 term describes the average interaction between nonpaired protons and neutrons. This Hamiltonian is exactly solvable, where, utilizing three to seven single-particle energy levels, we reproduce experimental data for 0+ state …


Cosmogenic Neutron Production At The Sudbury Neutrino Observatory, B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, R. Curley, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler, P. J. Doe, G. Doucas, P. L. Drouin Dec 2019

Cosmogenic Neutron Production At The Sudbury Neutrino Observatory, B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, R. Curley, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler, P. J. Doe, G. Doucas, P. L. Drouin

Faculty Publications

Neutrons produced in nuclear interactions initiated by cosmic-ray muons present an irreducible background to many rare-event searches, even in detectors located deep underground. Models for the production of these neutrons have been tested against previous experimental data, but the extrapolation to deeper sites is not well understood. Here we report results from an analysis of cosmogenically produced neutrons at the Sudbury Neutrino Observatory. A specific set of observables are presented, which can be used to benchmark the validity of geant4 physics models. In addition, the cosmogenic neutron yield, in units of 10-4 cm2/(g·μ), is measured to be 7.28±0.09(stat)-1.12+1.59(syst) in pure …


Search For Gravitational Waves From Scorpius X-1 In The Second Advanced Ligo Observing Run With An Improved Hidden Markov Model, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud Dec 2019

Search For Gravitational Waves From Scorpius X-1 In The Second Advanced Ligo Observing Run With An Improved Hidden Markov Model, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud

Faculty Publications

We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J-statistic, and by analyzing data from Advanced LIGO's second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h095%=3.47×10-25 when marginalizing over …


Erratum: Measurement Of D+ Be 7 Cross Sections For Big-Bang Nucleosynthesis (Physical Review Letters (2019) 122 (182701) Doi: 10.1103/Physrevlett.122.182701), N. Rijal, I. Wiedenhöver, J. C. Blackmon, M. Anastasiou, L. T. Baby, D. D. Caussyn, P. Höflich, K. W. Kemper, E. Koshchiy, G. V. Rogachev Dec 2019

Erratum: Measurement Of D+ Be 7 Cross Sections For Big-Bang Nucleosynthesis (Physical Review Letters (2019) 122 (182701) Doi: 10.1103/Physrevlett.122.182701), N. Rijal, I. Wiedenhöver, J. C. Blackmon, M. Anastasiou, L. T. Baby, D. D. Caussyn, P. Höflich, K. W. Kemper, E. Koshchiy, G. V. Rogachev

Faculty Publications

The cross sections of nuclear reactions between the radioisotope Be7 and deuterium, a possible mechanism of reducing the production of mass-7 nuclides in big-bang nucleosynthesis, were measured at center-of-mass energies between 0.2 and 1.5 MeV. The measured cross sections are dominated by the (d,a) reaction channel, towards which prior experiments were mostly insensitive. A new resonance at 0.36(5) MeV with a strength of ωγ=1.7(5) keV was observed inside the relevant Gamow window. Calculations of nucleosynthesis outcomes based on the experimental cross section show that the resonance reduces the predicted abundance of primordial Li7, but not sufficiently to solve the primordial …


Development And Evaluation Of A One-Step Multiplex Real-Time Taqman® Rt-Qpcr Assay For The Detection And Genotyping Of Equine G3 And G14 Rotaviruses In Fecal Samples, Mariano Carossino, Maria E. Barrandeguy, Erdal Erol, Yanqiu Li, Udeni B. R. Balasuriya Dec 2019

Development And Evaluation Of A One-Step Multiplex Real-Time Taqman® Rt-Qpcr Assay For The Detection And Genotyping Of Equine G3 And G14 Rotaviruses In Fecal Samples, Mariano Carossino, Maria E. Barrandeguy, Erdal Erol, Yanqiu Li, Udeni B. R. Balasuriya

Faculty Publications

No abstract provided.


Do Global Regulators Hold The Key To Production Of Bacterial Secondary Metabolites?, Sudarshan Singh Thapa, Anne Grove Dec 2019

Do Global Regulators Hold The Key To Production Of Bacterial Secondary Metabolites?, Sudarshan Singh Thapa, Anne Grove

Faculty Publications

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. The emergence of multiple antibiotic resistant bacteria has pushed the available pool of antibiotics to the brink. Bacterial secondary metabolites have long been a valuable resource in the development of antibiotics, and the genus Burkholderia has recently emerged as a source of novel compounds with antibacterial, antifungal, and anti-cancer activities. Genome mining has contributed to the identification of biosynthetic gene clusters, which encode enzymes that are responsible for synthesis of such secondary metabolites. Unfortunately, these large gene clusters generally remain silent or cryptic under normal laboratory settings, which creates a hurdle …


Efficacy Of Reduced Rates Of Chlorantraniliprole Seed Treatment On Insect Pests Of Irrigated Drill-Seeded Rice, James M. Villegas, Blake E. Wilson, Michael J. Stout Dec 2019

Efficacy Of Reduced Rates Of Chlorantraniliprole Seed Treatment On Insect Pests Of Irrigated Drill-Seeded Rice, James M. Villegas, Blake E. Wilson, Michael J. Stout

Faculty Publications

© 2019 Society of Chemical Industry Background: For the past decade, insecticidal seed treatment has been the most widely used control tactic against insect pests of rice (Oryza sativa L.) in the USA. Seed treatments are used primarily to control the most economically important early-season pest of rice, the rice water weevil (Lissorhoptrus oryzophilus Kuschel). This study was conducted to evaluate the efficacy of reduced rates of chlorantraniliprole seed treatment against the rice water weevil, fall armyworm (Spodoptera frugiperda J.E. Smith), and sugarcane borer (Diatraea saccharalis F.) under field and laboratory conditions. Concentrations of chlorantraniliprole in plant tissues were determined …