Open Access. Powered by Scholars. Published by Universities.^{®}
Physical Sciences and Mathematics Commons^{™}
Open Access. Powered by Scholars. Published by Universities.^{®}
 Discipline

 Astrophysics and Astronomy (442)
 Oceanography and Atmospheric Sciences and Meteorology (160)
 Stars, Interstellar Medium and the Galaxy (133)
 Atmospheric Sciences (117)
 Physics (116)

 Environmental Sciences (77)
 Engineering (69)
 Cosmology, Relativity, and Gravity (68)
 Applied Mathematics (55)
 Computer Sciences (52)
 Mathematics (49)
 Biological and Chemical Physics (38)
 Meteorology (37)
 Life Sciences (35)
 Sustainability (33)
 Partial Differential Equations (32)
 Social and Behavioral Sciences (28)
 Numerical Analysis and Computation (28)
 The Sun and the Solar System (24)
 Information Security (22)
 Mechanics of Materials (20)
 Engineering Science and Materials (20)
 Natural Resources Management and Policy (14)
 Fluid Dynamics (14)
 External Galaxies (14)
 Instrumentation (13)
 Arts and Humanities (13)
 Environmental Monitoring (13)
 Aerospace Engineering (12)
 Institution
 Keyword

 White dwarfs (62)
 Astronomy (50)
 Technology (46)
 Astronautics (45)
 Science (44)

 Mitchell Center for Sustainability Solutions (32)
 Mitchell Center (32)
 Senator George J. Mitchell Center (32)
 Senator George J. Mitchell Center for Sustainability Solutions (31)
 Gravitational waves (28)
 Gravity waves (22)
 Stars: evolution (21)
 Waves and tides (21)
 Airglow and aurora (19)
 Acousticgravity waves (16)
 Relativity (14)
 Gravitation (13)
 Stars: abundances (13)
 Middle atmosphere dynamics (13)
 Magnetic reconnection (13)
 Electrostatics (12)
 LIGO (12)
 Climate change (12)
 Circumstellar matter (11)
 Accretion (11)
 Stars: atmospheres (11)
 Stars (10)
 Magnetospheric physics (10)
 Gravity (10)
 Airglow (9)
 Publication Year
Articles 1  30 of 950
FullText Articles in Physical Sciences and Mathematics
Expanding Beyond Carnivores To Improve Livestock Protection And Conservation, Shari L. Rodriguez, Christie Sampson
Expanding Beyond Carnivores To Improve Livestock Protection And Conservation, Shari L. Rodriguez, Christie Sampson
Publications
Promoting human–wildlife coexistence is critical to the longterm conservation of many wild animal species that come into conflict with humans. Loss of livestock to carnivore species (e.g., lions, tigers, wolves) is a welldocumented occurrence and the focus of mitigation strategies around the world. One area that has received little research is the impact of noncarnivores on livestock. Both African and Asian elephant species are known to cause livestock injuries and deaths. Livestock owners within elephant ranges perceive elephants as a risk to their livestock, which may reduce their tolerance towards elephants and jeopardize conservation efforts in the area ...
Adaboost‑Based Security Level Classifcation Of Mobile Intelligent Terminals, Feng Wang, Houbing Song, Dingde Jiang, Hong Wen
Adaboost‑Based Security Level Classifcation Of Mobile Intelligent Terminals, Feng Wang, Houbing Song, Dingde Jiang, Hong Wen
Publications
With the rapid development of Internet of Things, massive mobile intelligent terminals are ready to access edge servers for realtime data calculation and interaction. However, the risk of private data leakage follows simultaneously. As the administrator of all intelligent terminals in a region, the edge server needs to clarify the ability of the managed intelligent terminals to defend against malicious attacks. Therefore, the security level classification for mobile intelligent terminals before accessing the network is indispensable. In this paper, we firstly propose a safety assessment method to detect the weakness of mobile intelligent terminals. Secondly, we match the evaluation results ...
Recent Developments In SpacetimeSymmetry Tests In Gravity, Q. G. Bailey
Recent Developments In SpacetimeSymmetry Tests In Gravity, Q. G. Bailey
Publications
Motivated by potentially detectable but minuscule signatures from Planckscale or other new physics, there has been a substantial increase in tests of spacetime symmetry in gravity in recent years. Some novel hypothetical effects that break local Lorentz symmetry and CPT symmetry in gravitational experiments as well as solar system and astrophysical observations have been studied in recent works. Much of this work uses the effective field theory framework, the StandardModel Extension (SME), that includes gravitational couplings. In other cases, the parameters in specific hypothetical models of Lorentz violation in gravity have been tested.
A 3+1 Decomposition Of The Minimal StandardModel Extension Gravitational Sector, Nils A. Nilsson, Kellie O'NealAult, Quentin G. Bailey
A 3+1 Decomposition Of The Minimal StandardModel Extension Gravitational Sector, Nils A. Nilsson, Kellie O'NealAult, Quentin G. Bailey
Publications
The 3+1 (ADM) formulation of General Relativity is used in, for example, canonical quantum gravity and numerical relativity. Here we present a 3+1 decomposition of the minimal StandardModel Extension gravity Lagrangian. By choosing the leaves of foliation to lie along a timelike vector field we write the theory in a form which will allow for comparison and matching to other gravity models.
Testing The Gravitational Weak Equivalence Principle In The StandardModel Extension With Binary Pulsars, Lijing Shao, Quentin G. Bailey
Testing The Gravitational Weak Equivalence Principle In The StandardModel Extension With Binary Pulsars, Lijing Shao, Quentin G. Bailey
Publications
The standard model extension provides a framework to systematically investigate possible violation of the Lorentz symmetry. Concerning gravity, the linearized version was extensively examined. We here cast the first set of experimental bounds on the nonlinear terms in the field equation from the anisotropic cubic curvature couplings. These terms introduce bodydependent accelerations for selfgravitating objects, thus violating the gravitational weak equivalence principle (GWEP). Novel phenomena, which are absent in the linearized gravity, remain experimentally unexplored. We constrain them with precise binaryorbit measurements from pulsar timing, wherein the high density and large compactness of neutron stars are crucial for the test ...
Alpha Insurance: A Predictive Analytics Case To Analyze Automobile Insurance Fraud Using Sas Enterprise Miner (Tm), Richard Mccarthy, Wendy Ceccucci, Mary Mccarthy, Leila Halawi
Alpha Insurance: A Predictive Analytics Case To Analyze Automobile Insurance Fraud Using Sas Enterprise Miner (Tm), Richard Mccarthy, Wendy Ceccucci, Mary Mccarthy, Leila Halawi
Publications
Automobile Insurance fraud costs the insurance industry billions of dollars annually. This case study addresses claim fraud based on data extracted from Alpha Insurance’s automobile claim database. Students are provided the business problem and data sets. Initially, the students are required to develop their hypotheses and analyze the data. This includes identification of any missing or inaccurate data values and outliers as well as evaluation of the 22 variables. Next students will develop and optimize their predictive models using five techniques: regression, decision tree, neural network, gradient boosting, and ensemble. Then students will determine which model is the best ...
A Performance Comparison Of Machine Learning Algorithms For Arced Labyrinth Spillways, Fernando Salazar, Brian M. Crookston
A Performance Comparison Of Machine Learning Algorithms For Arced Labyrinth Spillways, Fernando Salazar, Brian M. Crookston
Publications
Labyrinth weirs provide an economic option for flow control structures in a variety of applications, including as spillways at dams. The cycles of labyrinth weirs are typically placed in a linear configuration. However, numerous projects place labyrinth cycles along an arc to take advantage of reservoir conditions and dam alignment, and to reduce construction costs such as narrowing the spillway chute. Practitioners must optimize more than 10 geometric variables when developing a head–discharge relationship. This is typically done using the following tools: empirical relationships, numerical modeling, and physical modeling. This study applied a new tool, machine learning, to the ...
Long Reach Lane At Long Marsh, Harpswell, 2018 PostProject Monitoring Report; Year 5 Of 5, Matthew Craig
Long Reach Lane At Long Marsh, Harpswell, 2018 PostProject Monitoring Report; Year 5 Of 5, Matthew Craig
Publications
No abstract provided.
Book Review: Exoplanets : Hidden Worlds And The Quest For Extraterrestrial Life, T. D. Oswalt
Book Review: Exoplanets : Hidden Worlds And The Quest For Extraterrestrial Life, T. D. Oswalt
Publications
This document is Dr. Oswalt’s review of Exoplanets : Hidden Worlds and the Quest for Extraterrestrial Life. Harvard, 2018. 254p bibl index, 9780674976900 $24.95, 9780674988897
An Overview Of Cryptography (Updated Version 24 January 2019), Gary C. Kessler
An Overview Of Cryptography (Updated Version 24 January 2019), Gary C. Kessler
Publications
There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting health care information. One essential aspect for secure communications is that of cryptography. But it is important to note that while cryptography is necessary for secure communications, it is not by itself sufficient. The reader is advised, then, that the topics covered here only describe the first of many steps necessary for better security in any number of situations.
Thermal Structure Of The Mesopause Region During The Wadis2 Rocket Campaign, Raimund Wörl, Boris Strelnikov, Timo P. Viehl, Josef Höffner, PierreDominique Pautet, Michael J. Taylor, Yucheng Zhao, FranzJosef Lübken
Thermal Structure Of The Mesopause Region During The Wadis2 Rocket Campaign, Raimund Wörl, Boris Strelnikov, Timo P. Viehl, Josef Höffner, PierreDominique Pautet, Michael J. Taylor, Yucheng Zhao, FranzJosef Lübken
Publications
This paper presents simultaneous temperature measurements by three independent instruments during the WADIS2 rocket campaign in northern Norway (69^{◦} N, 14^{◦} E) on 5 March 2015. Vertical profiles were measured in situ with the CONE instrument. Continuous mobile IAP Fe lidar (Fe lidar) measurements during a period of 24 h, as well as horizontally resolved temperature maps by the Utah State University (USU) Advanced Mesospheric Temperature Mapper (AMTM) in the mesopause region, are analysed. Vertical and horizontal temperature profiles by all three instruments are in good agreement. A harmonic analysis of the Fe lidar measurements shows the presence of waves ...
Cape Elizabeth Culvert And Habitat Assessment Study, Steve Harding, Jake Aman, Matthew Craig, Robert Malley, Maureen O'Meara
Cape Elizabeth Culvert And Habitat Assessment Study, Steve Harding, Jake Aman, Matthew Craig, Robert Malley, Maureen O'Meara
Publications
Executive Summary:
In early 2017, Jake Aman, representing the Wells National Estuary Research Reserve (WNERR), met with the Cape Elizabeth Public Works Director and Town Planner to talk about culverts. Jake shared aerial photos of culverts located in the Spurwink Marsh where scouring of adjacent habitat areas was evident. He inquired if the town was considering any culvert replacements, in which case WNERR and The Nature Conservancy might be able to partner with the town to promote a habitat sensitive replacement. The outcome of the meeting was a jointly sponsored assessment of major town culverts, including those located in the ...
First Mms Observation Of Energetic Particles Trapped In HighLatitude Magnetic Field Depressions, Katariina Nykyri, Christina Chu, Xuanye Ma, Stephen A. Fuselier, Rachel Rice
First Mms Observation Of Energetic Particles Trapped In HighLatitude Magnetic Field Depressions, Katariina Nykyri, Christina Chu, Xuanye Ma, Stephen A. Fuselier, Rachel Rice
Publications
We present a case study of the Magnetospheric Multiscale (MMS) observations of the Southern Hemispheric dayside magnetospheric boundaries under southward interplanetary magnetic field direction with strong By component. During this event MMS encountered several magnetic field depressions characterized by enhanced plasma beta and high fluxes of high‐energy electrons and ions at the dusk sector of the southern cusp region that resemble previous Cluster and Polar observations of cusp diamagnetic cavities. Based on the expected maximum magnetic shear model and magnetohydrodynamic simulations, we show that for the present event the diamagnetic cavity‐like structures were formed in an unusual location ...
Book Review: Life On Mars: What To Know Before We Go, T. D. Oswalt
Book Review: Life On Mars: What To Know Before We Go, T. D. Oswalt
Publications
This document is Dr. Oswalt’s review of Life on Mars: what to know before we go. Princeton, 2018. 302p index ISBN 9780691180533, $29.95; ISBN 9781400889945 ebook, contact publisher for price.
Bayesian Analysis Of Two Stellar Populations In Galactic Globular Clusters Ii: Ngc 5024, Ngc 5272, And Ngc 6352, Rachel WagnerKaiser, Ted Von Hippel, David Stenning, Elliot Robinson, Ata Sarajedini, David Van Dyk, Nathan Stein, William H. Jefferys
Bayesian Analysis Of Two Stellar Populations In Galactic Globular Clusters Ii: Ngc 5024, Ngc 5272, And Ngc 6352, Rachel WagnerKaiser, Ted Von Hippel, David Stenning, Elliot Robinson, Ata Sarajedini, David Van Dyk, Nathan Stein, William H. Jefferys
Publications
We use Cycle 21 Hubble Space Telescope (HST) observations and HST archival ACS Treasury observations of Galactic Globular Clusters to find and characterize two stellar populations in NGC 5024 (M53), NGC 5272 (M3), and NGC 6352. For these three clusters, both single and doublepopulation analyses are used to determine a best fit isochrone(s). We employ a sophisticated Bayesian analysis technique to simultaneously fit the cluster parameters (age, distance, absorption, and metallicity) that characterize each cluster. For the twopopulation analysis, unique population level helium values are also fit to each distinct population of the cluster and the relative proportions of ...
Interaction Between Gravitational Radiation And Electromagnetic Radiation, Preston Jones, Douglas Singleton
Interaction Between Gravitational Radiation And Electromagnetic Radiation, Preston Jones, Douglas Singleton
Publications
In this review paper we investigate the connection between gravity and electromagnetism from Faraday to the present day. The particular focus is on the connection between gravitational and electromagnetic radiation. We discuss electromagnetic radiation produced when a gravitational wave passes through a magnetic field. We then discuss the interaction of electromagnetic radiation with gravitational waves via Feynman diagrams of the process graviton + graviton → photon + photon. Finally we review recent work on the vacuum production of counterpart electromagnetic radiation by gravitational waves.
Testing VelocityDependent CptViolating Gravitational Forces With Radio Pulsars, Lijing Shao, Quentin G. Bailey
Testing VelocityDependent CptViolating Gravitational Forces With Radio Pulsars, Lijing Shao, Quentin G. Bailey
Publications
In the spirit of effective field theory, the standardmodel extension (SME) provides a comprehensive framework to systematically probe the possibility of Lorentz/CPT violation. In the pure gravity sector, operators with mass dimension larger than 4, while in general being advantageous to shortrange experiments, are hard to investigate with systems of astronomical size. However, there is exception if the leadingorder effects are CPTviolating and velocitydependent. Here we study the lowestorder operators in the pure gravity sector that violate the CPT symmetry with carefully chosen relativistic binary pulsar systems. Applying the existing analytical results to the dynamics of a binary orbit ...
Gravity's Light In The Shadow Of The Moon, Andri Gretarsson, Preston Jones, Douglas Singleton
Gravity's Light In The Shadow Of The Moon, Andri Gretarsson, Preston Jones, Douglas Singleton
Publications
In this essay we look at the possibility of vacuum production of very low frequency electromagnetic radiation from a gravitational wave background (i.e. gravity's light). We also propose that this counterpart electromagnetic radiation should be detectable by a lunar orbiting satellite which is periodically occulted by the Moon (i.e., in the shadow of the Moon). For concreteness we consider the possibility of detection of both the gravitational wave and hypothesized electromagnetic radiation counterpart from the supernova core collapse of Betelgeuse
Relating Noncommutative So(2,3)* Gravity To The LorentzViolating StandardModel Extension, Quentin G. Bailey, Charles D. Lane
Relating Noncommutative So(2,3)* Gravity To The LorentzViolating StandardModel Extension, Quentin G. Bailey, Charles D. Lane
Publications
We consider a model of noncommutative gravity that is based on a spacetime with broken local SO(2,3)* symmetry. We show that the torsionfree version of this model is contained within the framework of the Lorentzviolating StandardModel Extension (SME). We analyze in detail the relation between the torsionfree, quadratic limits of the broken SO(2,3)* model and the StandardModel Extension. As part of the analysis, we construct the relevant geometric quantities to quadratic order in the metric perturbation around a flat background.
Weighted Composition Operators On Analytic Function Spaces: Some Recent Progress, Dip Acharyya
Weighted Composition Operators On Analytic Function Spaces: Some Recent Progress, Dip Acharyya
Publications
Theory of Composition Operators is a steady point of interest for almost 100 years. While studying these operators, our general goal is to describe their operator theoretic properties in terms of the associated function symbols. In this talk, I will discuss some recent results concerning linear combinations (sums, differences, etc.) of weighted composition operators in certain spaces of Analytic functions.
A Bayesian Analysis Of The Ages Of Four Open Clusters, Elizabeth Jeffery, Ted Von Hippel, David A. Van Dyk, David C. Stenning, Elliot Robinson, Nathan Sten, William H. Jefferys
A Bayesian Analysis Of The Ages Of Four Open Clusters, Elizabeth Jeffery, Ted Von Hippel, David A. Van Dyk, David C. Stenning, Elliot Robinson, Nathan Sten, William H. Jefferys
Publications
In this paper we apply a Bayesian technique to determine the best fit of stellar evolution models to find the main sequence turn off age and other cluster parameters of four intermediateage open clusters: NGC 2360, NGC 2477, NGC 2660, and NGC 3960. Our algorithm utilizes a Markov chain Monte Carlo technique to fit these various parameters, objectively finding the bestfit isochrone for each cluster. The result is a highprecision isochrone fit. We compare these results with the those of traditional “byeye” isochrone fitting methods. By applying this Bayesian technique to NGC 2360, NGC 2477, NGC 2660, and NGC 3960 ...
Superresolution Mapping Of Energy Landscape For Single Charge Carriers In Plastic Semiconductors, Yifei Jiang, Jason Mcneill
Superresolution Mapping Of Energy Landscape For Single Charge Carriers In Plastic Semiconductors, Yifei Jiang, Jason Mcneill
Publications
The performance of conjugated polymer devices is largely dictated by charge transport processes. However, it is difficult to obtain a clear relationship between conjugated polymer structures and charge transport properties, due to the complexity of the structure and the dispersive nature of charge transport in conjugated polymers. Here, we develop a method to map the energy landscape for charge transport in conjugated polymers based on simultaneous, correlated charge carrier tracking and singleparticle fluorescence spectroscopy. In nanoparticles of the conjugated polymer poly[9,9dioctylfluorenyl2,7diyl)co1,4benzo{2,1′3}thiadiazole)], two dominant chain conformations were observed, a blueemitting phase ...
Weighted Composition Operators On Spaces Of Analytic Functions: A Survey, Soumyadip Acharyya
Weighted Composition Operators On Spaces Of Analytic Functions: A Survey, Soumyadip Acharyya
Publications
“Pure mathematics is, in its way, the poetry of logical ideas.”  Albert Einstein. Pure mathematicians study abstract entities and structures that underlie mathematics. Although their general perspective is “math for math’s sake”, sometimes even the most abstract mathematics can have unexpected applications! Come learn some of these astonishing discoveries in the history of science and mathematics! They might make you thrilled but keep in mind realworld usage is rarely the goal behind developing a new mathematical theory.
Welcome to the world of pure mathematics! In this talk, we will focus on the theory of composition operators which is a ...
Database Review: Sao/Nasa Astrophysics Data System, Laura Pope Robbins
Database Review: Sao/Nasa Astrophysics Data System, Laura Pope Robbins
Publications
Laura Pope Robbins is an advisor for The Charleston Advisor, and the review below is included in Scholarly Commons with the permission of the publisher.
The Astrophysics Data System (ADS) is the premier Open Access research database for astronomy and astrophysics containing over 13 million bibliographic records. These records include journal articles, books, conference proceedings, historical observatory bulletins, and other gray literature. An exceptional feature of ADS is the visualizations it creates, showing author networks, overlapping citations, and frequently occurring terminology giving researchers new ways to explore the literature. It is a unique resource that is as easy for a ...
EHooks Provide Guidance And A Soft Landing For The Microtubule Binding Domain Of Dynein, Nayere Tajielyato, Lin Li, Yunhui Peng, Joshua Alper, Emil Alexov
EHooks Provide Guidance And A Soft Landing For The Microtubule Binding Domain Of Dynein, Nayere Tajielyato, Lin Li, Yunhui Peng, Joshua Alper, Emil Alexov
Publications
Macromolecular binding is a complex process that involves sensing and approaching the binding partner, adopting the proper orientation, and performing the physical binding. We computationally investigated the role of Ehooks, which are intrinsically disordered regions (IDRs) at the Cterminus of tubulin, on dynein microtubule binding domain (MTBD) binding to the microtubule as a function of the distance between the MTBD and its binding site on the microtubule. Our results demonstrated that the contacts between Ehooks and the MTBD are dynamical; multiple negatively charted patches of amino acids on the Ehooks grab and release the same positively charged patches on the ...
Identifying Weak Interdomain Interactions That Stabilize The Supertertiary Structure Of The NTerminal Tandem Pdz Domains Of Psd95, Inna S. Yanez Orozco, Frank A. Mindlin, Junyan Ma, Bo Wang, Brie Levesque, Matheu Spencer, Soheila Rezaei Adariani, George Hamilton, Feng Ding, Mark E. Bowen, Hugo Sanabria
Identifying Weak Interdomain Interactions That Stabilize The Supertertiary Structure Of The NTerminal Tandem Pdz Domains Of Psd95, Inna S. Yanez Orozco, Frank A. Mindlin, Junyan Ma, Bo Wang, Brie Levesque, Matheu Spencer, Soheila Rezaei Adariani, George Hamilton, Feng Ding, Mark E. Bowen, Hugo Sanabria
Publications
Previous studies of the Nterminal PDZ tandem from PSD95 produced divergent models and failed to identify interdomain contacts stabilizing the structure. We used ensemble and singlemolecule FRET along with replicaexchange molecular dynamics to fully characterize the energy landscape. Simulations and experiments identified two conformations: an openlike conformation with a small contact interface stabilized by salt bridges, and a closedlike conformation with a larger contact interface stabilized by surfaceexposed hydrophobic residues. Both interfaces were confirmed experimentally. Proximity of interdomain contacts to the binding pockets may explain the observed coupling between conformation and binding. The lowenergy barrier between conformations allows submillisecond dynamics ...
Dust Production And Depletion In Evolved Planetary Systems, J. Farihi, Ted Von Hippel, Rik Van Lieshout, P.W. Cauley, Erik Dennihy, Et Al.
Dust Production And Depletion In Evolved Planetary Systems, J. Farihi, Ted Von Hippel, Rik Van Lieshout, P.W. Cauley, Erik Dennihy, Et Al.
Publications
The infrared dust emission from the white dwarf GD 56 is found to rise and fall by 20 per cent peaktopeak over 11.2 yr, and is consistent with ongoing dust production and depletion. It is hypothesized that the dust is produced via collisions associated with an evolving dust disc, temporarily increasing the emitting surface of warm debris, and is subsequently destroyed or assimilated within a few years. The variations are consistent with debris that does not change temperature, indicating that dust is produced and depleted within a fixed range of orbital radii. Gas produced in collisions may rapidly recondense ...
Full Field Computing For Elastic Pulse Dispersion In Inhomogeneous Bars, A. Berezovski, R. Kolman, M. Berezovski, D. Gabriel, V. Adamek
Full Field Computing For Elastic Pulse Dispersion In Inhomogeneous Bars, A. Berezovski, R. Kolman, M. Berezovski, D. Gabriel, V. Adamek
Publications
In the paper, the finite element method and the finite volume method are used in parallel for the simulation of a pulse propagation in periodically layered composites beyond the validity of homogenization methods. The direct numerical integration of a pulse propagation demonstrates dispersion effects and dynamic stress redistribution in physical space on example of a onedimensional layered bar. Results of numerical simulations are compared with analytical solution constructed specifically for the considered problem. Analytical solution as well as numerical computations show the strong influence of the composition of constituents on the dispersion of a pulse in a heterogeneous bar and ...
Bayesian Hierarchical Modelling Of InitialFinal Mass Relations Across Star Clusters, Shijing Si, David A. Van Dyk, Ted Von Hippel, Elliot Robinson, Elizabeth Jeffery, David C. Stenning
Bayesian Hierarchical Modelling Of InitialFinal Mass Relations Across Star Clusters, Shijing Si, David A. Van Dyk, Ted Von Hippel, Elliot Robinson, Elizabeth Jeffery, David C. Stenning
Publications
The initialfinal mass relation (IFMR) of white dwarfs (WDs) plays an important role in stellar evolution. To derive precise estimates of IFMRs and explore how they may vary among star clusters, we propose a Bayesian hierarchical model that pools photometric data from multiple star clusters. After performing a simulation study to show the benefits of the Bayesian hierarchical model, we apply this model to five star clusters: the Hyades, M67, NGC 188, NGC 2168, and NGC 2477, leading to reasonable and consistent estimates of IFMRs for these clusters. We illustrate how a clusterspecific analysis of NGC 188 using its own ...
Rapid Screening Of Ellagitannins In Natural Sources Via Targeted Reporter Ion Triggered Tandem Mass Spectrometry, Jeremiah J. Bowers, Harsha P. Gunawardena, Anaëlle Cornu, Ashwini S. Narvekar, Antoine Richieu, Denis Deffieux, Stéphane Quideau, Nishanth Tharayil
Rapid Screening Of Ellagitannins In Natural Sources Via Targeted Reporter Ion Triggered Tandem Mass Spectrometry, Jeremiah J. Bowers, Harsha P. Gunawardena, Anaëlle Cornu, Ashwini S. Narvekar, Antoine Richieu, Denis Deffieux, Stéphane Quideau, Nishanth Tharayil
Publications
Complex biomolecules present in their natural sources have been difficult to analyze using traditional analytical approaches. Ultrahighperformance liquid chromatography (UHPLCMS/MS) methods have the potential to enhance the discovery of a less well characterized and challenging class of biomolecules in plants, the ellagitannins. We present an approach that allows for the screening of ellagitannins by employing higher energy collision dissociation (HCD) to generate reporter ions for classification and collisioninduced dissociation (CID) to generate unique fragmentation spectra for isomeric variants of previously unreported species. Ellagitannin anions efficiently form three characteristic reporter ions after HCD fragmentation that allows for the classification of ...