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Displaying 4826 - 4850 of 73839

Peak Fraction Purity and Chromatographic Resolution: Gaussian Peaks Revisited

January 19, 2022
Author(s)
Andre Striegel, Deborah Striegel
For incompletely resolved peak pairs, the purity of the chromatographic or fractographic fractions is oftentimes underestimated by the common user. This results in wasted time and effort while trying to achieve higher resolution than needed for the

Quantitative Determination of Cell Viability Using Absorbance Microscopy

January 19, 2022
Author(s)
Greta Babakhanova, Stephen Zimmerman, Laura Pierce, Sumona Sarkar, Nicholas Schaub, Carl Simon Jr.
Cell viability is an essential measurement for cell therapy products. One of the most common tests is Trypan blue (TB) dye exclusion where blue-stained cells are counted via imaging. Typically, live and dead cells are counted based on pixel intensities of

Respecting Ventilation: Now More than Ever

January 19, 2022
Author(s)
Andrew K. Persily
At Indoor Air 2005 the author gave a plenary in which he channeled Aretha Franklin to suggest that the IAQ field needed to give ventilation more R-E-S-P-E-C-T. That presentation and subsequent paper (Persily, 2006) stressed the science behind ventilation

1-GHz mid-infrared frequency comb spanning 3 to 13 mm

January 18, 2022
Author(s)
Nazanin Hoghooghi, Sida XIng, Peter Chang, Daniel Lesko, Alexander Lind, Greg Rieker, Scott Diddams
Mid-infrared (MIR) spectrometers are invaluable tools for molecular fingerprinting and imaging. Among the available spectroscopic approaches, MIR dual-comb absorption spectrometers have the potential to simultaneously combine the high-speed, high spectral

Evaluation of Indoor Environmental Concentrations in Buildings with Conditioned and Unconditioned Zones (IECCU) model for predicting TCPP concentrations in a low-energy test house

January 18, 2022
Author(s)
Dustin Poppendieck, Lisa Ng, Stephen Zimmerman
Globally over 100,000 different chemicals are manufactured every year (Levi et al. 2018). It is impossible to measure the fate of all of these chemicals in the wide range of indoor environments. The Indoor Environmental Concentrations in Buildings with

FAIR Digital Object Demonstrators 2021

January 18, 2022
Author(s)
Peter Wittenburg, Ivonne Anders, Christophe Blanchi, Merret Buurman, Carole Goble, Jonas Grieb, Alex Hardisty, Sharif Islam, Thomas Jejkal, Tibor Kalman, Christine Kirkpatrick, Laurence Lannom, Thomas Lauer, Giridhar Manepalli, Karsten Peters-von Gehlen, Andreas Pfeil, Robert Quick, Mark van de Sanden, Ulrich Schwardmann, Stian Soiland-Reyes, Rainer Stotzka, Zachary Trautt, Dieter Van Uytvanck, Claus Weiland, Philipp Wieder
This paper gives a summary of implementation activities in the realm of FAIR Digital Objects (FDO). It gives an idea which software components are robust and used for many years, which components are comparatively new and are being tested out in pilot

Guide on Secondary Thermometry: Industrial Platinum Resistance Thermometers

January 18, 2022
Author(s)
Jonathan Pearce, Richard Rusby, Kazuaki Yamazawa, Stefan Rudtsch, L Iacomini, Giuseppina Lopardo, D Rodney White, Weston L. Tew
This document is a part of guidelines, prepared by the Consultative Committee for Thermometry, on the techniques for approximating the International Temperature Scale of 1990. It collates information on industrial platinum resistance thermometry. The

Predicting the plateau modulus from molecular parameters of conjugated polymers

January 18, 2022
Author(s)
Abigail Fenton, Renxuan Xie, Melissa Aplan, Youngmin Lee, Michael Gill, Ryan Fair, Fabian Kempe, Michael Sommer, Chad R. Snyder, Enrique Gomez, Ralph Colby
The relationship between Kuhn length lk, Kuhn monomer volume v0, and plateau modulus GN0 , initially proposed by Graessley and Edwards for flexible polymers, and extended by Everaers, has a large gap in experimental data between the flexible and stiff

Colloid-Like Solution Behavior of Computationally Designed Coiled Coil Bundlemers

January 15, 2022
Author(s)
Nairiti J. Sinha, Rui Guo, Rajkumar Misra, Jeffrey Fagan, Antonio Faraone, Christopher J. Kloxin, Jeffery G. Saven, Grethe V. Jensen, Darrin J. Pochan
The use of colloidal theory for describing protein-protein interactions is a topic of ongoing debate in the biophysical community. This contention stems from the unavailability of synthetic protein-like model particles that are amenable to systematic

Understanding the dynamics of physiological changes, protein expression, and PFAS in wildlife

January 15, 2022
Author(s)
Jacqueline Bangma, T.C. Guillette, Paige Bommarito, Carla Ng, Jessica Reiner, Andrew Lindstrom, Mark Strynar
Per- and polyfluoroalkyl substances (PFAS) accumulation and elimination in both wildlife and humans is largely attributed to PFAS interactions with proteins, including but not limited to organic anion transporters (OATs), fatty acid binding proteins (FABPs

Welcome to SAMURAI's documentation!

January 13, 2022
Author(s)
Alec Weiss, Jeanne Quimby, Rod Leonhardt, Ben Jamroz, Peter Vouras, Kate Remley, Dylan Williams
The National Institute of Standards and Technology (NIST) Communication Technology Laboratory (CTL) developed the Synthetic Aperture Measurement with Uncertainties and Angle of Arrival (SAMURAI) millimeter-wave testbed and technique. SAMURAI utilizes a

A Convolutional Neural Networks-Based Approach for Texture Directionality Detection

January 12, 2022
Author(s)
Marcin Kociolek, Michal Kozlowski, Antonio Cardone
The perceived texture directionality is an important, not fully explored image characteristic. In many applications texture directionality detection is of fundamental importance. Several approaches have been proposed, such as the fast Fourier-based method

Core-hole potentials and related effects

January 12, 2022
Author(s)
Eric L. Shirley, Lars G. Pettersson, D. Prendergast
We consider the constrained-occupancy and (linear-response) self-consistent-field methods for screening of core-hole potentials that affect core excitation near-edge spectra. The methods are not exact, but each has distinct advantages and limitations. The

Magnetotransport and magnetic textures in Ho/FeCoGd/b-W multilayers

January 12, 2022
Author(s)
Ramesh Budhani, Vinay Sharma, Ezana Negusse, Jacob Casey, Arjun Pathak, Jerzy Sadowski, Brian Kirby
The enhancement of interfacial Dzyaloshinskii – Moriya Interaction (DMI) in magnetic multilayers results in the stabilization of topological spin textures like chiral domain walls and skyrmions. Here we report on the evaluation of interface-driven magnetic

Noble-metal dark-edge fermiology: core-hole memory and the "Zeeman Auger" effect

January 12, 2022
Author(s)
Eric L. Shirley, Joseph Woicik, Conan Weiland, Ahmed Rumaiz, Charles Cardot, Joshua Kas, John Rehr
Gold and platinum have the face-centered-cubic crystal structure, are considered noble metals, and differ by one in atomic number. Near-edge M4,5 x-ray absorption and resonant M4,5N6,7N6,7 Auger spectroscopy reveal "dark" edges and a photon-energy

Global perspectives of the bulk electronic structure of URu2Si2 from angle-resolved photoemission

January 11, 2022
Author(s)
Jonathan Denlinger, J.-S. Kang, L. Dudy, J. Allen, Kyoo Kim, J.-H. Shim, Kristjan Haule, J. Sarrao, Nicholas Butch, M. Maple
Previous high-resolution angle-resolved photoemission (ARPES) studies of URu 2Si 2 have characterized the temperature-dependent behavior of narrow-band states close to the Fermi level (E F) at low photon energies near the zone center, with an emphasis on

A Fundamental Equation of State for Vinyl Chloride

January 10, 2022
Author(s)
Monika Thol, Florian Fenkl, Eric W. Lemmon
A fundamental equation of state in terms of the Helmholtz energy is presented for vinyl chloride. Due to its fundamental nature, it can be used to consistently calculate all thermodynamic state properties in the fluid region. Based on the underlying

CODATA Recommended Values of the Fundamental Physical Constants: 2018

January 10, 2022
Author(s)
Eite Tiesinga, Peter J. Mohr, David B. Newell, Barry N. Taylor
We report the 2018 self-consistent values of constants and conversion factors of physics and chemistry recommended by the Committee on Data of the International Science Council (CODATA). The recommended values can also be found at physics.nist.gov

Easy-plane spin Hall nano-oscillators as spiking neurons for neuromorphic computing

January 10, 2022
Author(s)
Danijela Markovic, Matthew Daniels, Pankaj Sethi, Andrew Kent, Mark Stiles, Julie Grollier
We show analytically using a macrospin approximation that easy-plane spin Hall nano-oscillators excited by a spin-current polarized perpendicularly to the easy-plane have phase dynamics analogous to that of Josephson junctions. This allows them to
Displaying 4826 - 4850 of 73839
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