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Displaying 151 - 175 of 143737

Requirements for Cryptographic Accordions

April 11, 2025
Author(s)
Yu Long Chen, Michael Davidson, Morris Dworkin, John Kelsey, Yu Sasaki, Meltem Sonmez Turan, Alyssa Thompson, Nicky Mouha, Donghoon Chang
This report introduces the cryptographic accordion as a tweakable, variable-input-length strong pseudorandom permutation (VIL-SPRP) that is constructed from an underlying block cipher. An accordion facilitates the cryptographic processing of messages of

Topology and Kinetic Pathways of Colloidosome Assembly and Disassembly

April 11, 2025
Author(s)
Raymond Adkins, Joanna Robaszewski, Seungwoo Shin, Fridtjof Brauns, Leroy Jia, Ayantika Khanra, Prerna Sharma, Robert Pelcovits, Thomas Powers, Zvonimir Dogic
Liquid shells, such as lipid vesicles, emulsions, and soap bubbles, are ubiquitous throughout biology, engineered matter, and everyday life. Their creation or disintegration is defined by a singularity separating topologically distinct one-boundary

Tuning the Surface Electronic Landscape of Ultrathin (Al,Sn)Ox Electron Extraction Layers in Perovskite Solar Cells

April 10, 2025
Author(s)
Joshua Sraku Adu, Alice Sheppard, Raphael Agbenyeke, George Kwesi "Asare ", Behrang Hamadani, David Fermin, Helen Hejin Park
Power conversion losses at the electron transport layer (ETL) are key limiting factors in high-performance perovskite solar cells (PSC) and silicon-PSC tandem systems. Solution-processed nanoparticle tin dioxide (np-SnO2) films typically serve as ETLs in n

Application of Voltage Controlled Crystal Oscillators to DC Voltage Reference Validation

April 8, 2025
Author(s)
Matthew Spidell, Malcolm White, Alan Jaffe, John Lehman, Gaylon Partain
DC voltage references are typically based on calibrated Zener Diodes which are subject to drift and therefore require periodic recalibration against a Primary Standard. Since it is preferable to maintain constant power to such references, the shipping and

Manipulation of meniscus rise for in situ multiphase nuclear magnetic resonance spectroscopy

April 8, 2025
Author(s)
Veruska Malave, Newell Moser, Edward Garboczi, Mark McLinden, Jason Widegren, Christopher Suiter
Our earlier work demonstrated that nuclear magnetic resonance (NMR) spectroscopy is a viable technique for in situ analysis of vapor–liquid equilibria (VLE) of fluid mixtures and that inserting a capillary into the NMR sample tube allows the simultaneous

Gauging error of pose acquired by vision systems in bin picking applications

April 7, 2025
Author(s)
Marek Franaszek, Prem Rachakonda, Kamel Saidi
Picking a part from an unorganized pile of parts requires an accurate vision system integrated with a robotic arm. A proper metric for gauging pose error is therefore indispensable. Pose error is a combination of an error in the position vector and an

NIST Time and Frequency Bulletin

April 7, 2025
Author(s)
Kelsey Rodriguez
The Time and Frequency Bulletin provides information on performance of time scales and a variety of broadcasts (and related information) to users of the NIST services.

Workshop Summary Report for ConnectCon 2024: "Minding the Gaps in Human-Centered Cybersecurity"

April 7, 2025
Author(s)
Julie Haney, Matthew Canham, Mike Elkins, Lisa Flynn, Matthew Gordin, Victoria Granova, Wenjing Huang, Jody Jacobs, Greg Moody, Ann Rangarajan, Michael Ross, Robert Thomson, Joe Uchill
In August 2024, the National Institute of Standards and Technology (NIST) co-sponsored ConnectCon, an interactive workshop that facilitated meaningful conversations and connections between researchers and practitioners on the topic of human-centered

Pyrrhotite Reference Material Synthesis

April 4, 2025
Author(s)
Michael Mengason, Stephanie Watson
The mineral pyrrhotite was synthesized from iron and sulfur starting materials for one component in a four-component reference material (RM 8154-Pyrrhotite in Concrete) to be used to evaluate the presence of sulfur in aggregate (crushed rock) and concrete

Acceleration-based spindle monitoring based on geometric error motions

April 3, 2025
Author(s)
Aaron Cornelius, Gregory Vogl, Ryan Hall, Yongzhi Qu
The development of intelligent machine tools requires integrating sensors that allow the machine to monitor, diagnose, and control the machining process. However, existing sensors for monitoring tool vibrations are intrusive and difficult to integrate in a

Bottom-up Gold Filling of Sub-Micrometer Wide Trenches

April 3, 2025
Author(s)
Daniel Josell, Lucia Romano, Konstantins Jefimovs
A 〖Bi〗^(3+)-stimulated Au electrodeposition process in slightly alkaline 〖Na〗_3 Au(〖SO〗_3 )_2+〖Na〗_2 〖SO〗_3 electrolytes has been previously demonstrated for void-free bottom-up filling of progressively deeper and higher aspect trenches in gratings for

Inhibition by 4-(4-Bromo-2-oxo-3H-benzimidazol-1-yl)-N-(4-iodophenyl)piperidine-1-carboxamide) (TH5487) of the Activity of Human 8-Oxoguanine DNA Glycosylase-1 (OGG1) for the Excision of 2,6-Diamino-4-hydroxy-5-formamidopyrimidine, 4,6-Diamino-5-formamido

April 3, 2025
Author(s)
Pawel Jaruga, R. Stephen Lloyd, Michael Luzadder, Istvan Boldogh, M Miral Dizdar
DNA glycosylases of the base excision repair pathway have become clinically validated drug targets for treatment of several diseases. Human OGG1 (hOGG1) is specific for the removal of the highly mutagenic 8-oxoguanine (8-oxo-Gua) and 2,6-diamino-4-hydroxy

Zeeman split Kramers doublets in spin-supersolid candidate Na2BaCo(PO4)2

April 3, 2025
Author(s)
T. Popescu, N. Gora, F. Demmel, Z. Xu, R. Zhong, T. Williams, R. Cava, Guangyong Xu, C. Stock
Na2BaCo(PO4)2 is a triangular antiferromagnet that displays highly efficient adiabatic demagnetization cooling (Ref. 1) near a quantum critical point at μ0Hc ∼ 1.6 T, separating a low-field magnetically disordered from a high-field fully polarized

Certification of Standard Reference Material(R) 956e Electrolytes in Frozen Human Serum

April 2, 2025
Author(s)
Lee Yu, Steven Christopher, Regina Easley, Monique Johnson, Dennis Leber, Thomas Vetter, Jason Waters, Charles Barber, Karen Murphy, Laura Wood, Stephen Chin, Murli Narayan, Alexander Rhodes, Michael Nash
The National Institute of Standards and Technology (NIST) Standard Reference Material® (SRM®) 956e Electrolytes in Frozen Human Serum is intended for use in the calibration and validation of procedures and methods employed in clinical analysis for the

IMPPY3D: Image Processing in Python for 3D Image Stacks

April 2, 2025
Author(s)
Newell Moser, Alexander Landauer, Orion Kafka
Image Processing in Python for 3D image stacks, or IMPPY3D, is a free and open-source software (FOSS) repository that simplifies post-processing and 3D shape characterization for grayscale image stacks, otherwise known as volumetric images, 3D images, or
Displaying 151 - 175 of 143737
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