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Displaying 301 - 325 of 143586

Nagaoka ferromagnetism in 3 * 3 arrays and beyond

December 26, 2024
Author(s)
Yan Li, Keyi Liu, Garnett Bryant
Nagaoka ferromagnetism (NF) is a long-predicted example of itinerant ferromagnetism (IF) in the Hubbard model that has been studied theoretically for many years. The condition for NF, an infinite onsite Coulomb repulsion and a single hole in a half-filled

NIST Scientific Integrity Program: Annual Report

December 26, 2024
Author(s)
Anne Andrews, Justyna Zwolak
This report summarizes the findings of the National Institute of Standards and Technology Scientific Integrity Program assessment of the program for Fiscal Year 2024 (FY24) and the period between 1 October 2023 and 30 September 2024. It provides an

The Application of Digital PCR as a Reference Measurement Procedure to Support the Accuracy of Quality Assurance for Infectious Disease Molecular Diagnostic Testing

December 26, 2024
Author(s)
Samreen Falak, Denise O'Sullivan, Megan Cleveland, Simon Cowen, Eloise Busby, Alison Devonshire, Esmeralda Valiente, Gerwyn Jones, Martin Kammel, Mojca Milavec, Laura Vierbaum, Ingo Schellenberg, Heinz Zeichhardt, Andreas Kummrow, Peter Vallone, Rainer Macdonald, Jim Huggett
Background Nucleic Acid Amplification Tests (NAATs) are used to diagnose many infectious diseases. They are typically sensitive and specific and can be quickly developed and adapted. It is more challenging to develop standards to ensure NAATs perform

Disseminable single-photon source for quantum radiometry

December 24, 2024
Author(s)
Hristina Georgieva, Thomas Gerrits, Lijun Ma, Riley Dawkins, Marco Lopez, Oliver Slattery, Sven Rodt, Stephan Reitzenstein, Alan Migdall, Stefan Kueck
We present a disseminable single-photon source based on an InGaAs quantum dot in a micro-mesa. This source achieves a maximum photon flux of 2.8 million photons/s at a wavelength of 929.7 nm, with a multi-photon suppression of g(2)(0) = 0.22. The

Enabling Global Image Data Sharing in the Life Sciences

December 23, 2024
Author(s)
Anne L. Plant, Peter Bajcsy
Public, reference data are one of the most important foundational resources in the modern life and biomedical sciences. Over the last 40 years, the public release and availability of genomic and macromolecule structural databases accelerated discovery

Three-dimensional nucleation and growth of deformation twins in magnesium

December 21, 2024
Author(s)
Sangwon Lee, Michael Pilipchuk, Can Yildirim, Duncan Greeley, Qianying Shi, Tracy Berman, Adam Creuziger, Evan Rust, Carsten Detlefs, Veera Sundararaghavan, John Allison, Ashley Bucsek
At two-thirds the weight of aluminum, magnesium alloys have the potential to significantly reduce the fuel consumption of transportation vehicles. These advancements depend on our ability to optimize the desirable versus undesirable effects of deformation

Protocol for CRISPR-Cas9 genome editing of a swine cell line via electroporation

December 20, 2024
Author(s)
Patricia Kiesler, Samantha Maragh, Stella Lee, Alexis Norris, Mayumi Miller, Adam Moyer
Genome editing technology is being used in animals for a variety of purposes, including improvement of animal and public health outcomes. Characterization of genome editing reagents and anticipated genomic alterations is an essential step toward the

Workshop on Compositional Structures in Systems Engineering and Design

December 20, 2024
Author(s)
Spencer Breiner, Eswaran Subrahmanian, Joseph Moeller, Priyaa Varshinee Srinivasan
The focus of this workshop is to foster the development of applications of category theory to systems engineering and design. We are interested in bringing together experts from engineering and applied category theory, and those involved in software tools

Food Nutrition and Safety Measurements Quality Assurance Program: Exercise 3 Final Report

December 19, 2024
Author(s)
Melissa Phillips, Colleen Bryan Sallee, Benjamin Place, Jacolin Murray, Alix Rodowa
The Food Nutrition and Safety Measurements Quality Assurance Program (FNSQAP) was launched in 2021. FNSQAP was established to assist laboratories in the development and validation of new analytical methods, in improving the quality of their analytical

Building a Digital Twin of a CNC Machine Tool

December 18, 2024
Author(s)
Deogratias Kibira, Guodong Shao, Rishabh Venketesh, Matthew Triebe
Developing digital twins for manufacturing applications is challenging due to insufficient modeling frameworks and standardized procedures. As a result, the number of successful digital twin implementations has not caught up with the increasing literature

DNA Mixture Interpretation: A NIST Scientific Foundation Review

December 18, 2024
Author(s)
John Butler, Hariharan Iyer, Richard Press, Melissa Taylor, Peter Vallone, Sheila Willis
Improvements in DNA testing methods have allowed forensic scientists to reduce the quantity of DNA required for profiling an individual. Today, DNA profiles can be generated from a few skin cells. This increased sensitivity has extended the usefulness of

Hybrid-LLM-GNN: Integrating Large Language Models and Graph Neural Networks for Enhanced Materials Property Prediction

December 18, 2024
Author(s)
Youjia Li, Vishu Gupta, Talha Killic, Kamal Choudhary, Daniel Wines, Wei-keng Liao, Alok Choudhary, Ankit Agrawal
Graph-centric learning has attracted significant interest in material informatics. Accordingly, a family of graph-based machine learning models, primarily utilizing Graph Neural Networks (GNN), has been developed to provide accurate material properties

Integrating Dynamic Digital Twins: Enabling Real-Time Connectivity for IoT and Virtual Reality

December 18, 2024
Author(s)
Lejla Erdal, Ammar Gubartalla, Paulo Victor Lopes, Huizhong Cao, Guodong Shao, Per Lonnehed, Henri Putto, Abbe Ahmed, Sven Ekered, Bjorn Johansson
As Industry 4.0 technology is still evolving, research and implementation gaps due to issues such as costs, security, and lack of domain expertise for enabling Digital Twins and supportive technology need to be bridged. This paper proposes a practical

An Analysis of Aerosol Dynamics with Diffusion-Limited Growth in a Batch Reactor

December 16, 2024
Author(s)
Jiann Yang, Thomas Cleary, George Mulholland
A set of approximate first-order ordinary differential equations was derived from the general dynamic equation (GDE) to study the aerosol dynamics with homogeneous nucleation and condensational diffusion-limited growth in an isothermal batch reactor. A

Recommendations for assessing commutability of a replacement batch of a secondary calibrator certified reference material

December 16, 2024
Author(s)
Liesbet Deprez, Jesper Johansen, Thomas Keller, Jeffrey Budd, Neil Greenberg, Cas Weykamp, Sverre Sandberg, MAURO PANTEGHINI, Ferruccio Ceriotti, Elizabeth Barczak, Robert Rej, Pernille Kjeilen Fauskanger, Finlay MacKenzie, Johanna Camara, Alicia Lyle, W. Greg Miller, VINCENT DELATOUR
Commutable secondary certified reference materials (CRMs) play an essential role in the calibration hierarchy of many in-vitro diagnostic measurement procedures used in the medical laboratory. Therefore, sustainable availability of these CRMs is crucial to

Thermal Exposure of Objects Near Burning Electrical Enclosures

December 16, 2024
Author(s)
Kevin McGrattan, Isaac Leventon
This report documents a series of fire experiments performed within steel electrical enclosures and on open "ladder back" cable trays. The first objective is to measure the heat release rates and qualitatively understand the burning behavior of circuit
Displaying 301 - 325 of 143586