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Search Publications

NIST Authors in Bold

Displaying 2276 - 2300 of 143727

Evaluating the depth resolution of 3D sensors for manufacturing automation applications

July 21, 2023
Author(s)
Prem Rachakonda, Geraldine S. Cheok, Marek Franaszek, Kamel S. Saidi
The Intelligent Systems Division (ISD) at the National Institute of Standards and Technology (NIST) is performing research to support the development of documentary standards within ASTM E57.23. This subcommittee is addressing the performance evaluation of

Ozone Generation from a Germicidal Ultraviolet Lamp with Peak Emission at 222 nm

July 21, 2023
Author(s)
Michael F. Link, Andrew Shore, Behrang Hamadani, Dustin Poppendieck
Recent interest in commercial devices containing germicidal ultraviolet lamps with a peak emission wavelength at 222 nm (GUV222) has focused on mitigating virus transmission indoors while posing minimum risk to human tissue. However, 222 nm light can

PGAA measurement of chloride diffusion profiles in concrete cylinders

July 21, 2023
Author(s)
Heather H. Chen-Mayer, Neal Berke, Richard Livingston
Chloride diffusion is correlated with corrosion of steel reinforcement in concrete structures. The current standard method for estimating chloride diffusion profile is by destructive chemical analysis. This work investigates the feasibility of Prompt Gamma

pH-Dependent Solution Micellar Structure of Amphoteric Polypeptoid Block Copolymers with Positionally Controlled Ionizable Sites

July 21, 2023
Author(s)
Meng Zhang, Yun Liu, Xiaobing Zuo, Shuo Qian, Sai Pingali, Richard Gillilan, Qingqiu Huang, Donghui Zhang
While solution micellization of ionic block copolymers (BCP) with randomly distributed ionization sites along the hydrophilic segments has been extensively studied, the roles of positionally controlled ionization sites along the BCP chains in their

Single-Component Superconductivity in UTe2 at Ambient Pressure

July 21, 2023
Author(s)
Florian Theuss, Avi Shragai, Gael Grissonnanche, Ian Hayes, Shanta Saha, Yun Eo, Alonso Suaraz, Tatsuya Shishidou, Nicholas Butch, Johnpierre Paglione, B. Ramshaw
The microscopic mechanism of Cooper pairing in a superconductor leaves its fingerprint on the symmetry of the order parameter. UTe2 has been inferred to have a multi-component order parameter that entails exotic effects like time reversal symmetry breaking

Functional Analyses of Single Nucleotide Polymorphic Variants of the DNA Glycosylase NEIL1 Present in sub-Saharan African Populations

July 20, 2023
Author(s)
Jamie Zuckerman, Irina Minko, Melis Kant, Pawel Jaruga, Miral M. Dizdar, Amanda McCullough, R. Stephen Lloyd
Nei-like glycosylase 1 (NEIL1) is a DNA repair enzyme that initiates the base excision repair (BER) pathway to cleanse the human genome of damage. Its substrate specificity includes several common base modifications formed under oxidative stress conditions

Internal and external harmonics in bi-cyclide coordinates

July 20, 2023
Author(s)
Hans Volkmer, Brandon Alexander, Howard Cohl
The Laplace equation in three-dimensional Euclidean space is R-separable in bi-cyclide coordinates leading to harmonic functions expressed in terms of Lamé–Wangerin functions called internal and external bi-cyclide harmonics. An expansion for a fundamental

A community-led calibration of the Zr isotope Reference Materials: NIST RM 8299 and SRM 3169

July 19, 2023
Author(s)
Francois L.H. Tissot, Mauricio Ibanez-Mejia, Savelas Rabb, Rebecca Kraft, Robert D. Vocke Jr., Manuela Fehr, Maria Schonbachler, Haolan Tang, Edward Young
As the field of zirconium (Zr) stable isotopes is rapidly expanding from the study of isotope anomalies to that of mass-dependent effects, a variety of Zr standards have appeared in the literature. While each of these standards is being proposed as the
Displaying 2276 - 2300 of 143727
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