U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 3951 - 3975 of 143726

Method development for the determination of seven ginsenosides in three Panax Ginseng Standard Reference Materials via liquid chromatography with tandem mass spectrometry

October 18, 2022
Author(s)
Hugh Hayes, Walter Brent Wilson, Kate Rimmer
A new liquid chromatography-tandem mass spectrometry (LC–MS/MS) method was developed for the analysis of ginsenosides in three Panax ginseng reference materials (RMs). Extraction procedures were optimized to recover neutral and malonyl-ginsenosides using a

On-grid compressive sampling for spherical field measurements in acoustics

October 18, 2022
Author(s)
Alex Yuffa, Marc Valdez, Michael Wakin
We derive a theoretically guaranteed compressive sensing method for acoustic field reconstructions using spherical field measurements on a predefined grid. This method can be used to reconstruct sparse band-limited spherical harmonic or Wigner $D$-function

Effects of Modeling Decisions on the Lateral Performance of Cold-Formed Steel Framed Walls

October 17, 2022
Author(s)
Zhidong Zhang, Matthew Speicher, Amanpreet Singh, Tara Hutchinson, Benjamin Schafer
This study proposes a modeling protocol for the lateral performance of cold-formed steel (CFS) framed wall-lines that contain both steel sheet sheathed shear walls as well as gravity walls and may include the impact of non-structural finish on these wall

Operational Impacts of IEEE 802.1Qbv Scheduling on a Collaborative Robotic Scenario

October 17, 2022
Author(s)
Rick Candell, Karl Montgomery, Mohamed Hany, Susruth Sudhakaran, Justin Albrecht, Dave Cavalcanti
Time-sensitive networking (TSN) is an emerging topic for the advancement of wireless networking for industrial applications. TSN, as defined under the umbrella of IEEE 802.1 standards, addresses issues related to providing deterministic communications over

Feasibility of using depth cameras for evaluating human - exoskeleton interaction

October 14, 2022
Author(s)
Soocheol Yoon, Ya-Shian Li-Baboud, Ann Virts, Roger V. Bostelman, Milli Shah
With increased use of exoskeletons in a variety of fields such as industry, military, and health care, there is a need for measurement standards to understand the effects of exoskeletons on human motion. Optical tracking systems are the current gold

Potential artifacts and control experiments in toxicity tests of nanoplastic and microplastic particles

October 14, 2022
Author(s)
Elijah Petersen, Ana Barrios, Theodore Henry, Monique Johnson, Albert Koelmans, Antonio Montoro Bustos, Joanna Matheson, Matthias Roesslein, Jian Zhao, Baoshan Xing
To fully understand the potential ecological and human health risks from nanoplastics and microplastics (NMPs) in the environment, it is critical to make accurate measurements. Similar to past research on the toxicology of engineered nanomaterials, a broad

Radio Spectrum Occupancy Measurements Amid COVID-19 Telework and Telehealth

October 14, 2022
Author(s)
Dan Kuester, Xifeng Lu, Dazhen Gu, Azizollah Kord, Jake Rezac, Katie Carson, Marla L. Dowell, Elizabeth Eyeson, Ari Feldman, Keith Forsyth, Vu Le, John Marts, Mike McNulty, Kyle Neubarth, Andre Rosete, Matthew Ryan, Maija Teraslina
During the COVID-19 pandemic, NIST began a targeted campaign of measurements of averaged power and occupancy rate in the radio spectrum. The purpose was to sample real environments to offer timely insights into data infrastructure where it might be

Snappy: A New Automated Testing Machine for Monitoring the Break Evolution Process during Single Fiber Fragmentation Test

October 14, 2022
Author(s)
Ami Ahure Powell, Richard Sheridan, Berkay Yucel, Sezen Yucel, Evan Rust, Jeremiah Woodcock, Jeffrey Gilman, Surya R. Kalidindi, Gale A. Holmes
A measurement of interfacial shear strength (IFSS) in fiber reinforced polymer (FRP) materials remains elusive after more than fifty years. This is due in part to the many sources of uncertainty, the time-consuming nature of the measurements, and the large

Linking viscosity to equation of state using residual entropy scaling theory

October 13, 2022
Author(s)
Xiaoxian Yang, Xiong Xiao, Monika Thol, Markus Richter, Ian Bell
In our previous work, a residual entropy scaling (RES) approach was developed to link viscosity to residual entropy (a thermodynamic property calculated with an equation of state, EoS) using a simple polynomial equation for refrigerants. This work extends

Extracting Mathematical Concepts from Text

October 12, 2022
Author(s)
Jacob Collard, Valeria de Paiva, Brendan Fong, Eswaran Subrahmanian
We investigate some different systems for extracting mathematical entities from texts in the mathematical field of category theory, as a first step for constructing a mathematical knowledge graph. We consider four different term extractors and compare
Displaying 3951 - 3975 of 143726
Was this page helpful?