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Displaying 9701 - 9725 of 73741

Nuclear Spin Incoherent Neutron Scattering from Quantum Well Resonators

July 1, 2019
Author(s)
Max Wolff, Anton Devishvili, Joseph Dura, Franz A. Adlmann, Brian Kitchen, Gunnar K. Palsson, Heikki Palonen, Brian B. Maranville, Charles Majkrzak, Boris P. Toperverg
We report the detection and quantification of nuclear spin incoherent scattering from hydrogen occupying interstitial sites in a thin film of vanadium. The neutron wave field is enhanced in a quantum resonator with magnetically switchable iron boundaries

On addition-subtraction chains of numbers with low Hamming weight

July 1, 2019
Author(s)
Dustin Moody, Amadou Tall
An addition chain is a sequence of integers such that every element in the sequence is the sum of two previous elements. They have been much studied, and generalized to addition-subtraction chains, Lucas chains, and Lucas addition-subtraction chains. These

Sensitivity Analysis Affecting the Calibration of Heat-Flow-Meter Apparatus

July 1, 2019
Author(s)
Robert R. Zarr, Sergio A. Carvajal, James J. Filliben
Results and analysis of a sensitivity study of four procedural variables on the calibration response of two commercial heat-flow-meter apparatus in compliance with ASTM Test Method C 518 are presented. The apparatus ranged in plate size from 305 mm by 305

Structural Investigations of Membrane-Associated Proteins by Neutron Reflectometry

July 1, 2019
Author(s)
Rebecca Eells, David Hoogerheide, Paul A. Kienzle, Mathias Loesche, Charles Majkrzak, Frank Heinrich
Neutron reflectometry is a powerful technique for probing the structure of lipid bilayer membranes and membrane-associated proteins. Measurements of the specular neutron reflectivity as a function of momentum transfer can be performed in aqueous

Wide-Angle Polarization Analysis on the Multi-Axis Crystal Spectrometer for the Study of Collective and Single Particle Dynamics of Methanol at its Prepeak

July 1, 2019
Author(s)
Wangchun Chen, Shannon M. Watson, Yiming Qiu, Jose Rodriguez Rivera, Antonio Faraone
Neutron polarization analysis capability with a large scattering angle and momentum transfer coverage has not been widely implemented for the separation of coherent and incoherent quasi-elastic neutron scattering (QENS) spectra. A feasibility test for soft

IEEE RAS Standards Strategy Update

June 30, 2019
Author(s)
Craig I. Schlenoff
On September 30, 2018, the Industrial Activities Board (IAB) of the IEEE Robotics and Automation Society (RAS) organized a Standards Strategy Meeting in conjunction with the Intelligent Robots and Systems (IROS) Conference in Madrid, Spain. The goal of the

Omnidirectional Channel Sounder with Phased-Array Antennas for 5G Mobile Communications

June 30, 2019
Author(s)
Derek Caudill, Peter B. Papazian, Camillo Gentile, Jack Chuang, Nada T. Golmie
We describe a 60-GHz channel sounder with phased-array antennas and 1-GHz bandwidth. It estimates the angle of departure (AoD)/angle of arrival (AoA) of channel multipath components (MPCs) by sweeping the antenna space of the transmitter/receiver through 5

Reference data set and variability study for human skin reflectance

June 30, 2019
Author(s)
P. Yvonne Barnes, David W. Allen, Benjamin K. Tsai
The optical properties of human skin have been of interest to researchers for some time. Their interest is based on a need to know for a variety of different applications, which range from spectral imaging for automated or stand-off detection, non-invasive

SIS Contagion Avoidance on a Network Growing by Preferential Attachment

June 30, 2019
Author(s)
Brian D. Cloteaux, Vladimir V. Marbukh
The economic and convenience benefits of interconnectivity drive the current explosive growth in networked systems. However, as recent catastrophic contagious failures in numerous large-scale networked infrastructures have demonstrated, interconnectivity

A Comparison of Ion Channel Current Blockades Caused by Individual Poly(ethylene glycol) Molecules and Polyoxometalate Nanoclusters

June 28, 2019
Author(s)
Haiyan Wang, John J. Kasianowicz, Joseph W. Robertson, Dianne L. Poster, Jessica Ettedgui
Proteinaceous nanometer-scale pores have been used to detect and physically characterize many different types of molecules at the single molecule limit. The method is based on the ability to measure the transient reduction in the ionic channel conductance

Characterization of Colloidal Nanocrystal Surface Structure using Small Angle Neutron Scattering and Efficient Bayesian Parameter Estimation

June 28, 2019
Author(s)
Samuel W. Winslow, Wenbi Shcherbakov-Wu, Yun Liu, William A. Tisdale, James W. Swan
Complete structural characterization of colloidal nanocrystals is challenging due to rapid variation in the electronic, vibrational, and elemental properties across the nanocrystal surface. while electron microscopy and X-ray scattering techniques can
Displaying 9701 - 9725 of 73741
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