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Displaying 2701 - 2725 of 143727

Per- and Polyfluoroalkyl Substances in New Firefighter Turnout Gear Textiles

May 1, 2023
Author(s)
Andrew Maizel, Andre Thompson, Meghanne Tighe, Samuel Escobar Veras, Alix Rodowa, Ryan Falkenstein-Smith, Bruce A. Benner Jr., Kathleen Hoffman, Michelle K. Donnelly, Olivia Hernandez, Nadine Wetzler, Trung Ngu, Jessica Reiner, Benjamin Place, John Kucklick, Kate Rimmer, Rick D. Davis
Turnout gear is increasingly recognized as a potential source of per- and polyfluoroalkyl substance (PFAS) exposure to firefighters. To determine the type, concentration, and prevalence of PFAS potentially present in new firefighter turnout gear, fifty

Reflective deep-ultraviolet Fourier ptychographic microscopy for nanoscale imaging

April 29, 2023
Author(s)
Kwanseob Park, Yoon Sung Bae, Sang-Soo Choi, Martin Sohn
Fourier ptychographic microscopy (FPM) that has high space-bandwidth-product and phase imaging capability requires significant resolution enhancement in reflection mode for imaging of nanoscale semiconductor devices. A direct way to nanoscale resolution is

Rapid Analysis of Drugs: A Tool to Detect Drug Overdose Spikes, Build Trust Among People Using Drugs and Reduce Overdoses - Maryland, November 2021 - August 2022

April 28, 2023
Author(s)
Erin Russell, Edward Sisco, Allison Thomson, Jasmine Lopes, Dana Heilman, Margaret Rybak, Malik Burnett, Meghan Appley, Matthew Gladden
Maryland overdose deaths increased 16%, to a record high of 2,912 deaths during the 12-month period from July 2020 to June 2021. Illicitly manufactured fentanyl and/or fentanyl analogs* contributed to 84% of these overdose deaths.† Timely public health

Towards a Markerless 3D Pose Estimation Tool

April 28, 2023
Author(s)
Amaan Rahman, Mili Shah, Ya-Shian Li-Baboud, Ann Virts
Evaluation of exoskeleton performance benefts from standards to verify proper functionality and safety. Currently, there are limited evaluation methods for exoskeletons. Measurement methods to evaluate human-exoskeleton kinematics include optical tracking

Model Validation for Scanning Electron Microscopy

April 27, 2023
Author(s)
Olga Ridzel, Wataru Yamane, Ishiaka Mansaray, John S. Villarrubia
We are beginning projects to validate the physics models used for interpretation of electron microscopy images. In one, we will measure electron yields and energy spectra from cleaned well-characterized samples subjected to electron bombardment inside of a

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

April 27, 2023
Author(s)
Douglas Bennett, W.Bertrand (Randy) Doriese, Malcolm Durkin, Joseph Fowler, Johnathon Gard, Gene C. Hilton, Kelsey Morgan, Galen O'Neil, Carl D. Reintsema, Dan Schmidt, Daniel Swetz, Joel Ullom, Takuma Okumura
To test the bound-state quantum electrodynamics (BSQED), we have performed high precision x- ray spectroscopy of the 5g→4f and 5f→4d transitions (BSQED contribution of 2.4 eV and 5.2 eV, respectively) of muonic neons in the low-pressure gas phase under the
Displaying 2701 - 2725 of 143727
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