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Displaying 3301 - 3325 of 74634

Solution Structures of Bacillus Anthracis Protective Antigen Proteins using Small Angle Neutron Scattering and Protective Antigen 63 Ion Channel Formation Kinetics

December 11, 2021
Author(s)
Ariel Michelman-Ribeiro, Kenneth A. Rubinson, Vitalii Silin, John J. Kasianowicz
We are studying the structures of bacterial toxins that form ion channels and catalyze macromolecule transport across membranes. For example, the crystal structure of the Staphylococcus aureus α-hemolysin (α-HL) channel in its functional state was

Cavity Entanglement and State Swapping to Accelerate the Search for Axion Dark Matter

December 10, 2021
Author(s)
K. Wurtz, B.M. Brubaker, Y. Jiang, Elizabeth Ruddy, Dan Palken, Konrad Lehnert
In cavity-based axion dark matter detectors, quantum noise remains a primary barrier to achieving the scan rate necessary for a comprehensive search of the axion parameter space. Here we introduce a method of scan rate enhancement in which an axion

Model for the Bipolar Amplification Effect

December 10, 2021
Author(s)
James Ashton, Stephen Moxim, Ashton Purcell, Patrick Lenahan, Jason Ryan
We present a model based on Fitzgerald-Grove surface recombination for the bipolar amplification effect (BAE) measurement, which is widely utilized in electrically detected magnetic resonance (EDMR) to measure reliability and performance-limiting interface

Mixture model analysis of Transition Edge Sensor pulse height spectra

December 9, 2021
Author(s)
Kevin J. Coakley, Jolene D. Splett, Thomas Gerrits
To calibrate an optical transition edge sensor, for each pulse of the light source (e.g., pulsed laser), one must determine the ratio of the expected number of photons that deposit energy and the expected number of photons created by the laser. Based on

Developing Cyber-Resilient Systems: A Systems Security Engineering Approach

December 8, 2021
Author(s)
Ronald S. Ross, Victoria Yan Pillitteri, Richard Graubart, Deborah Bodeau, Rosalie McQuaid
NIST Special Publication (SP) 800-160, Volume 2, Revision 1, focuses on cyber resiliency engineering—an emerging specialty systems engineering discipline applied in conjunction with systems security engineering and resilience engineering to develop

Experiments to Test the A-UGV Capabilities Standard

December 8, 2021
Author(s)
Soocheol Yoon, Roger V. Bostelman, Ann Virts
Automatic, Automated, or Autonomous - Unmanned Ground Vehicles (A-UGVs), as referred to by ASTM International Committee F45, are industrial vehicles that have capabilities to navigate, dock, avoid obstacles, and interact with other vehicles and systems all

HDX-MS and MD simulations provide evidence for stabilization of the IgG1- FcgRIa (CD64a) immune complex through intermolecular glycoprotein bonds

December 8, 2021
Author(s)
Kyle Anderson, Kerry Scott, Christina Bergonzo, Ioannis Karageorgos, Elyssia Gallagher, Venkata Tayi, Michael Butler, Jeffrey W. Hudgens
Previous reports present different models for the stabilization of the Fc—FcγRI immune complex. Although accord exists on the importance of L235 in IgG1 and some hydrophobic contacts for complex stabilization, discord exists regarding the existence of

A Data Integration Framework for Additive Manufacturing Big Data Management

December 7, 2021
Author(s)
Milica Perisic, Dimitrije Milenkovic, Yan Lu, Albert T. Jones, Nenad Ivezic, Boonserm Kulvatunyou
Large amounts of data are generated throughout the entire, AM, part-development lifecycle. Data are generated by various functions within process monitoring, material characterization, equipment status, and part qualification. Hence, data integration and
Displaying 3301 - 3325 of 74634