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Displaying 1051 - 1075 of 75143

Lattice vibrations and the energy landscape of the isoelectronic semiconductor series CuBr, ZnSe, GaAs, and Ge: The special case of CuBr and its d-level chemistry

November 9, 2023
Author(s)
Joseph Woicik, Eric J. Cockayne, Eric L. Shirley, Igor Levin, Conan Weiland, Bruce D. Ravel, A. M. Milinda Abeykoon
We have examined the lattice vibrations and the energy landscape of the isoelectronic diamond and zincblende semiconductor series CuBr, ZnSe, GaAs, and Ge. Vibrations are found to be an increasing function of ionicity, with the cation sublattice always

Liquid scintillation efficiencies, gamma-ray emission intensities, and half-life for Gd-153

November 9, 2023
Author(s)
Denis E. Bergeron, Jeffrey T. Cessna, Ryan P. Fitzgerald, Gulakhshan Hamad, Lizbeth Laureano-Perez, Leticia Pibida, Brian E. Zimmerman
Gadolinium-153 was standardized for activity by live-timed anticoincidence counting and an ampoule was submitted to the international reference system (SIR). Absolute emission intensities for the main γ rays were determined with calibrated high-purity

Methane emissions show recent decline but strong seasonality in two US Northeastern cities

November 9, 2023
Author(s)
Anna Karion, Subhomoy Ghosh, Israel Lopez Coto, Kimberly Mueller, Sharon Gourdji, Joseph Pitt, James Whetstone
Urban methane emissions have been found to exceed estimates derived using traditional inventory methods in several US cities. In large northeastern US cities, including in Washington, DC and Baltimore, Maryland, studies using atmospheric methane

Observation of Interpenetrated Topology Isomerism for Covalent Organic Frameworks with Atom-resolution Single Crystal Structures

November 9, 2023
Author(s)
Baoqiu Yu, Wenliang Li, Jing-Hong Li, Rui-Biao Lin, Hailong Wang, Xu Ding, Yucheng Jin, Xiya Yang, Hui Wu, Wei Zhou, Jingping Zhang, Jianzhuang Jiang
Rational control and understanding of isomerism are of significance but still remain a great challenge in reticular frameworks in particular for covalent organic frameworks (COFs) due to the complicated synthesis and energy factors. Herein, reaction of 3,3

Quantification of STEM-in-SEM Energy Dispersive X-ray Spectra using Bulk Standards

November 9, 2023
Author(s)
Nicholas Ritchie, Andrew Herzing, Vladimir Oleshko
A quantification model which uses standard X-ray spectra collected from bulk materials to determine the composition and mass-thickness of single-layer and multi-layer unsupported thin- films is presented. The multi-variate model can be iteratively solved

An Experimental High-Throughput to High-Fidelity Study Towards Discovering Al-Cr Containing Corrosion-Resistant Compositionally Complex Alloys.

November 8, 2023
Author(s)
Debashish Sur, Emily Holcombe, William Blades, Daniel Foley, Brian DeCost, Elaf Anber, Jason Hattrick-Simpers, Karl Sieradzki, Howie Joress, John Scully, Mitra Taheri
Compositionally complex alloys hold the promise of simultaneously attaining superior combinations of properties, such as corrosion resistance, light-weighting, and strength. Achieving this goal is a challenge due in part to a large number of possible

Metabolomics 2022 Workshop Report: State of QA/QC Best Practices in LC-MS-Based Untargeted Metabolomics, Informed Through mQACC Community Engagement Initiatives

November 8, 2023
Author(s)
Tracey Schock, Warwick Dunn, Julia Kuligowski, Jonathan Mosley, Candice Ulmer Holland, Dajana Vuckovic
Introduction: The Metabolomics Quality Assurance and Quality Control Consortium (mQACC) organized a workshop during the Metabolomics 2022 conference. Objectives: The goal of the workshop was to disseminate recent findings from mQACC community-engagement

Bug, Fault, Error, Weakness, or Vulnerability - Poster

November 7, 2023
Author(s)
Irena Bojanova
Motivation: Software security vulnerabilities are leveraged to attack cyberspace and critical infrastructure, leading to security failures. When communicating about them, however, even security experts might conflate essential related software concepts

Bugs Framework (BF) - Poster

November 7, 2023
Author(s)
Irena Bojanova
Motivation: Crucial need of a formal classification system allowing unambiguous specification of software security bugs and weaknesses, and the vulnerabilities that exploit them. Objective: Create bug models, weakness taxonomies, and vulnerability models

Improving Fitting CAD to 3D Point Cloud Acquired with Line-of-Sight Sensor

November 7, 2023
Author(s)
Marek Franaszek, Prem Rachakonda, Kamel S. Saidi
Due to self-occlusions in 3D point clouds acquired with line-of-sight sensors, an incomplete representation of an object's surface is used in fitting a CAD (computer-aided design) model to the data. For certain types of object geometry, CAD pose fitted

Labeling Software Security Vulnerabilities - Poster

November 7, 2023
Author(s)
Irena Bojanova, John Guerrerio
Motivation: Crucial need for systematic comprehensive labeling of the more than 228 000 publicly disclosed cybersecurity CVE vulnerabilities to enable advances in modern AI cybersecurity research. Objective: Utilize the Bugs Framework (BF) formalism for BF

The Magnetic Suspension Balance - 40 Years of Advancing Densimetry and Sorption Science Xiaoxian Yang1, Reiner Kleinrahm2, Mark O. McLinden3, Markus Richter1,

November 7, 2023
Author(s)
Xiaoxian Yang, Reiner Kleinrahm, Mark O. McLinden, Markus Richter
This paper reviews the 40-year evolution and application of the magnetic-suspension balance (MSB) and discusses some challenging issues of the technique. A MSB, as we define it here, is a magnetic-suspension coupling (MSC) connected with an analytical

Tracking Active Phase Behavior on Boron Nitride during the Oxidative Dehydrogenation of Propane Using Operando X-Ray Raman Spectroscopy

November 6, 2023
Author(s)
Melissa Cendejas, Oscar Paredes Mellone, Unni Kurumbail, Zisheng Zhang, Jacob Jansen, Faysal Ibrahim, Son Dong, John Vinson, Anastassia Alexandrova, Dimosthenis Sokaras, Simon Bare, Ive Hermans
Hexagonal boron nitride (hBN) is a highly selective catalyst for the oxidative dehydrogenation of propane (ODHP) to propylene. Using a variety of ex situ characterization techniques, the activity of the catalyst has been attributed to the formation of an

A novel approach to interface high-Q Fabry-Perot resonators with photonic circuits

November 3, 2023
Author(s)
Haotian Cheng, Naijun Jin, Zhaowei Dai, Chao Xiang, Joel Guo, Yishu Zhou, Scott Diddams, John Bowers, Owen Miller, Peter Rakich
The unique benefits of Fabry–Pérot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for emerging photonic technologies. To bring these performance benefits to next

ASTRA: a Transition-Density-Matrix Approach to Molecular Ionization

November 3, 2023
Author(s)
Luca Argenti, Juan Martin Randazzo, carlos maranthe, Jeppe Olsen, Siddhartha Chattopadhyay, Barry I. Schneider
We describe ASTRA (AttoSecond TRAnsitions), a new close-coupling approach to molecular ionization that uses many-body transition density matrices between ionic states with arbitrary spin and symmetry, in combination with hybrid integrals between Gaussian

Digital Twin Core Conceptual Models and Services

November 3, 2023
Author(s)
Shi-Wan Lin, Kym Watson, Guodong Shao, Ljiljana Stojanovic, Bassam Zarkout
To improve operational efficiency and enhance competitiveness in business, organizations are broadly undergoing digital transformation. As a foundation for digital transformation, digital twins enable system operators to dynamically represent, diagnose

Linkage Transformations in a Three-Dimensional Covalent Organic Framework for High-Capacity Adsorption of Perfluoroalkyl Substances

November 3, 2023
Author(s)
Andrea Zeppuhar, Devin Rollins, Dale L. Huber, Emmanuel Bazan-Bergamino, Fu Chen, Hayden Evans, Mercedes Taylor
Despite their many advantages, covalent organic frameworks (COFs) built from three-dimensional monomers are synthetically difficult to functionalize. Herein, we provide a new synthetic approach to the functionalization of a three-dimensional covalent

Long Range and Collective Impact of Au Surface Adatoms on Nanofin Growth

November 3, 2023
Author(s)
Babak Nikoobakht, Aaron Johnston-Peck, Jerry Tersoff
In the Au-catalyzed vapor-liquid-solid (VLS) growth of semiconductor nanowires, individual Au nanodroplets can result in single nanowires per site. However, growth of single nanofins per site using the same process becomes unpredictable. Our results show

Partial Elastic Shape Registration of 3D Surfaces using Dynamic Programming

November 3, 2023
Author(s)
Javier Bernal, James F. Lawrence
The computation of the elastic shape registration of two simple surfaces in 3−dimensional space and therefore of the elastic shape distance between them has been investigated by Kurtek, Jermyn, et al. who have proposed algorithms to carry out this
Displaying 1051 - 1075 of 75143