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Search Publications

NIST Authors in Bold

Displaying 13526 - 13550 of 73697

Partial Ionization Cross Sections of Organic Molecules

June 13, 2017
Author(s)
Karl K. Irikura
Partial ionization cross sections are the absolute yields of specific ions from an electron- molecule collision. They are necessary for modeling plasmas and for determining the sensitivity of mass spectrometers, among other applications. One mass

The GAN exonuclease, or the flap endonuclease Fen1 and RNase HII are necessary for viability of Thermococcus kodakarensis.

June 13, 2017
Author(s)
Brett W. Burkhart, Lubomira Cubonova, Margaret R. Heider, John N. Reeve, Thomas J. Santangelo, Zvi Kelman
Many aspects of and factors required for DNA replication are conserved across all three Domains of life but there are some significant differences surrounding lagging strand synthesis. In Archaea a 5' to 3' exonuclease, related to both bacterial RecJ and

Laser-Driven Calorimetry of Single-Component Liquid Hydrocarbons

June 12, 2017
Author(s)
Cary Presser, Ashot Nazarian
A novel laser-heating technique, referred to as the laser-driven thermal reactor (LDTR), was used to determine sample thermal behavior, specific heat release rate, and total specific heat release of three volatile single-component liquid hydrocarbons, i.e

Metrologies for Performance of Impact Mitigating Materials

June 12, 2017
Author(s)
Aaron Forster, Michael Riley
Soft non-linear materials are used to mitigate energy transfer between objects during high rate or frequency events. These impact mitigating materials (IMM) are used in a wide range of applications such as isolating rotating equipment, protecting buildings

Progress in Modeling Wildland Fires using Computational Fluid Dynamics

June 12, 2017
Author(s)
Kevin B. McGrattan
This paper presents a sensitivity study for computational fluid dynamics (CFD) simulations of grassland fires. The simulations are compared with the results of experiments conducted in northern Australia in 1986. The report of these experiments notes that

Self-referenced frequency combs using high-efficiency silicon nitride waveguides

June 12, 2017
Author(s)
David R. Carlson, Daniel D. Hickstein, Alexander J. Lind, Stefan Droste, Daron A. Westly, Nima Nader, Ian R. Coddington, Nathan R. Newbury, Kartik A. Srinivasan, Scott A. Diddams, Scott B. Papp
We utilize silicon nitride waveguides to self-reference telecom-wavelength fiber frequency combs through supercontinuum generation using less than 15 mW total optical average power. This is approximately ten times lower than conventional approaches using

Fabrication of High-Speed and High-Density Single-Flux-Quantum Circuits at NIST

June 11, 2017
Author(s)
David Olaya, Paul Dresselhaus, Pete Hopkins, Samuel P. Benz
The development of a fabrication process for single-flux-quantum (SFQ) digital circuits is a fundamental part of the NIST effort to develop a gigahertz waveform synthesizer with quantum voltage accuracy. This paper describes the current SFQ fabrication

Integrating Finite Element Analysis with Systems Engineering Models

June 11, 2017
Author(s)
Jerome Szarazi, Axel Reichwein, Conrad Bock
In order to promote traceability, consistency, interoperability and better collaboration between systems engineering and Finite Element Analysis (FEA)-based simulation activities, we propose a tool-independent description of FEA models that integrates with

Scalable, High-Speed, Digital Single-Flux-Quantum Circuits at NIST

June 11, 2017
Author(s)
Pete Hopkins, Manuel Castellanos Beltran, Christine A. Donnelly, Paul Dresselhaus, David Olaya, Adam Sirois, Samuel P. Benz
We describe NIST's capabilities for designing and fabricating niobium-based single-flux quantum (SFQ) digital and mixed-signal circuits and show test results of our first circuits. We have assembled a package of software design tools that are readily

Smart manufacturing through a framework for a knowledge-based diagnosis system

June 9, 2017
Author(s)
Michael P. Brundage, Boonserm Kulvatunyou, Toyosi Ademujimi, Badarinath Rakshith
Various techniques are used to diagnose problems throughout all levels of the organization within the manufacturing industry. Often times, this root cause analysis is ad-hoc with no standard representation for artifacts or terminology (i.e., no standard

PROCEDURE FOR DEVELOPING KEY PERFORMANCE INDICATORS FOR SUSTAINABLE MANUFACTURING

June 8, 2017
Author(s)
Shaw C. Feng, Deogratias Kibira, Michael P. Brundage, Katherine C. Morris
The need for an open, inclusive, and neutral procedure for developing key performance indicators (KPIs) has been increasing as manufacturers seek to determine what to measure in order to improve environmental sustainability of their products and

Software Tools for Uncertainty Evaluation in VNA Measurements: A Comparative Study

June 8, 2017
Author(s)
Gustavo Avolio, Dylan Williams, Michael Frey, Sarah B. Streett, Dominique Schreurs, Andrea Ferrero, Michael Dieudonne
We compared three software tools designed for scattering-parameter measurement uncertainty evaluation. These tools propagate uncertainty to calibrated S-parameters by means of a sensitivity analysis. We also validated the sensitivity analysis with Monte
Displaying 13526 - 13550 of 73697
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