U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 16626 - 16650 of 74053

Form Factors for Branched Polymers with Excluded Volume

April 13, 2016
Author(s)
Boualem Hammouda
The form factors for star-branched polymers with linear branches or with looping branches are calculated. The effect of chain swelling excluded volume is incorporated through an excluded volume parameter. Furthermore, the form factor for dendrimers with

JPEG 2000 CODEC Certification Guidance for 1000 ppi Fingerprint Friction Ridge Imagery

April 13, 2016
Author(s)
John M. Libert, Shahram Orandi, Michael D. Garris, Frederick R. Byers, John D. Grantham
The document describes the procedure by which applications of JPEG 2000 CODECs will be evaluated with respect to conformance to the NIST guidance for compression of 1000 ppi friction ridge images as detailed in NIST Special Publication 500-289 [NIST5]

PIV Card Application and Middleware Interface Test Guidelines (SP 800-73-4 compliance)

April 13, 2016
Author(s)
David Cooper, Hildegard Ferraiolo, Ramaswamy Chandramouli, Jason Mohler
NIST Special Publication (SP) 800-73 contains the technical specifications to interface with the smart card to retrieve and use the Personal Identity Verification (PIV) identity credentials. This document, SP 800-85A, contains the test assertions and test

Multi-purpose Configurable Range for Antenna Testing Up To 220 GHz*

April 9, 2016
Author(s)
David R. Novotny, Michael H. Francis, Ronald C. Wittmann, Josh Gordon, Jeffrey R. Guerrieri, Alexandra Curtin
NIST has developed a multi-purpose test range for performing several types of antenna testing including spherical, cylindrical and planar near-field scanning as well as extrapolation measurements. This range uses a commercial, offthe- shelf, six-axis robot

Heat Release Rates of Electrical Enclosure Fires (HELEN-FIRE)

April 8, 2016
Author(s)
Kevin B. McGrattan, Scott D. Bareham
This report documents an experimental program to quantify the heat release rate and burning behavior of electrical enclosures commonly found in nuclear power plants. Electrical enclosures are a potential source of fire in nuclear power plants because they

Size-exclusion chromatography of metal nanoparticles and quantum dots

April 8, 2016
Author(s)
Leena M. Pitkanen, Andre Striegel
This review presents an overview of size-exclusion chromatographic separation and characterization of noble metal nanoparticles (NPs) and quantum dots (QDs) over the past 25 years. The properties of NPs and QDs that originate from quantum and surface

A New Regime of Pauli-Spin Blockade

April 7, 2016
Author(s)
Justin K. Perron, Michael D. Stewart, Neil M. Zimmerman
Pauli-spin blockade is a phenomenon that allows for a type of spin to charge conversion often used to probe fundamental physics such as spin relaxation and singlet-triplet coupling. In this paper we theoretically explore Pauli-spin blockade as a function

How to Build a Vacuum Spring-Transport Package for Spinning Rotor Gauges

April 7, 2016
Author(s)
James A. Fedchak, Julia K. Scherschligt, Makfir Sefa
The spinning rotor gauge (SRG) is a high-vacuum gauge often used to as a secondary or transfer standard for vacuum pressures in the range of 1.0 × 10-4 Pa to 1.0 Pa. In this application, the gauges are frequently transported to laboratories for calibration

Quantification of carbon nanotubes in environmental matrices: Current capabilities, case studies, and future improvements

April 6, 2016
Author(s)
Elijah J. Petersen, D. X. Flores-Cervantes, Thomas Bucheli, Lindsay C. Elliott, Jeffrey A. Fagan, Alexander Gogos, Shannon Hanna, Antonio R. Montoro Bustos, Desiree L. Plata, Vytautas Reipa, Paul Westerhoff, Michael R. Winchester, Elisabeth Mansfield
Carbon nanotubes (CNTs) have numerous exciting potential applications approaching commercialization. As such, quantitative measurements of CNTs in key environmental matrices (water, soil, sediment, and biological tissues) are needed to address concerns

Reclamation-NIST Exploratory Research Symposium Summary Report

April 6, 2016
Author(s)
Nicholas Barbosa, Jessica Torrey
The Reclamation-NIST Exploratory Research Symposium was held on August 4-5, 2015, at the Reclamation Denver Federal Center facility in Lakewood, CO, and the NIST facility in Boulder, CO. Staff from the Bureau of Reclamation and the National Institute of

Transition to Low-GWP Refrigerants: Options and Tradeoffs

April 6, 2016
Author(s)
Piotr A. Domanski
Hydrofluorocarbons (HFCs), which are commonly used as refrigerants in air-conditioning equipment, are potent greenhouse gases and will need to be replaced. In search of suitable replacements, a recent study performed a comprehensive screening of a database

INTERLABORATORY TRIAL FOR MEASUREMENT OF VITAMIN D AND 25(OH)D IN FOODS AND A DIETARY SUPPLEMENT USING LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY

April 5, 2016
Author(s)
Janet M. Roseland, Kristine Y. Patterson, Karen Andrews, Katherine M. Phillips, Melissa M. Phillips, Pamela R. Pehrsson, Guy L. Dufresne, Pavel A. Gusev, Sushma Savarala, Quynhanh V. Nguyen, Andrew J. Makowski, Guillaume P. Larouche, Stephen Wise, J. Harnly, Juhi R. Williams, Joseph M. Betz, Christine Taylor
Assessment of total vitamin D intake from foods and dietary supplements (DSs) may be incomplete if 25-hydroxyvitamin D [25(OH)D] intake is not included. However, 25(OH)D data for such intake assessments are lacking, no food or DS reference materials (RMs)

Self-Assembly of Trimer Colloids: Effect of shape and interaction range

April 5, 2016
Author(s)
Harold W. Hatch, Seung Y. Yang, Jeetain Mittal, Vincent K. Shen
Trimers with one attractive bead and two repulsive beads, similar to recently synthesized trimer patchy colloids, were simulated with flat-histogram Monte Carlo methods to obtain the stable self-assembled structures for different shapes and interaction
Displaying 16626 - 16650 of 74053
Was this page helpful?