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Search Publications

NIST Authors in Bold

Displaying 28501 - 28525 of 73697

Study of Azeotropic Mixtures with the Advanced Distillation Curve Approach

April 11, 2009
Author(s)
Amelia Hadler, Lisa S. Ott, Thomas J. Bruno
Classical methods for the study of complex fluid phase behavior include static and dynamic equilibrium cells that usually require vapor and liquid recirculation. These are sophisticated, costly apparatus that require highly trained operators, usually

Measuring Pulse Energy With Solid-State Photodiodes

April 10, 2009
Author(s)
Robert E. Vest, Shannon B. Hill, Steven E. Grantham
With the advent of extreme ultraviolet lithography (EUVL) the measurement of the energy contained in pulses of short-wavelength radiation is becoming increasingly important. Even low average power sources can deliver pulses of radiation with high peak

A Materials Science-Based Approach to Characterizing Fire Resistive Materials

April 9, 2009
Author(s)
Dale P. Bentz, Christopher C. White, Kuldeep R. Prasad, Daniel R. Flynn, Donald L. Hunston, Kar T. Tan
While ASTM E119-07a is commonly employed to establish a fire rating for a fire resistive material (FRM)/steel assembly, the test method provides little quantitative information on either the thermophysical or adhesion properties of the FRM, beyond

A reassessment of the Al-Fe system using a four sublattice model for the DO 3 ordering

April 9, 2009
Author(s)
Ursula R. Kattner, Bo Sundman, Ikuo Ohnuma, Nathalie Dupin, S Fries
The Al-Fe system is important in many alloys and the new interest in iron aluminides makes it necessary to improve the modelling of the different ordered forms of the A2 lattice in this system. This has now been done using a 4 sublattice model based o the

CYCLE_D VERSION 4.0: Theoretical Vapor Compression Cycle Design Program

April 9, 2009
Author(s)
J S. Brown, Piotr A. Domanski, Eric Lemmon
This paper presents Version 4.0 of the CYCLE_D: NIST Vapor Compression Cycle Design Program. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat exchanger. In addition, the

Uncertainty Analysis for Noise-Parameter Measurements at NIST

April 9, 2009
Author(s)
James P. Randa
The uncertainty analysis is presented for NIST measurements of noise parameters of amplifiers and transistors, in both connectorized (coaxial) and on-wafer environments. We treat both the X-parameters, which are based on the wave representation of the

Available states and available space: Static properties that predict dynamics of confined fluids

April 8, 2009
Author(s)
Vincent K. Shen, Gaurav Goel, William P. Krekelberg, Mark J. Pond, Jeetain Mittal, Jeffrey R. Errington, Thomas M. Truskett
Although classical density functional theory provides reliable predictions for the static properties of simple equilibrium fluids under confinement, a theory of comparative accuracy for the transport coefficients has yet to emerge. Nonetheless, there is

Indentation of Single-Crystal Silicon Nanolines: Buckling and Contact Friction at Nanoscale

April 8, 2009
Author(s)
Bin Li, Qiu Zhao, Huai Huang, Zhiquan Luo, Jay Im, Michael W. Cresswell, Richard A. Allen, Min K. Kang, Rui Huang, Paul S. Ho
Silicon nanostructures are essential building blocks for nanoelectronic devices and nano-electromechanical systems (NEMS). Mechanical characterization at nanoscale is important for practical applications but remains challenging as the mechanical properties

Comparison of five extraction methods for measuring PCBs, PBDEs, organochlorine pesticides, and lipid content in serum

April 7, 2009
Author(s)
Jennifer M. Lynch, Aurore Guichard, Jennifer Yordy, Michele M. Schantz, John R. Kucklick, Robert R. Swarthout, Brianna K. Carlson
An increasing number of studies use blood obtained non-invasively to monitor organohalogen contaminants. However, blood can be a difficult tissue to analyze for organohalogen pollutants due to interferences from co-extracted proteins. We compared five

International NMR-based Environmental Metabolomics Intercomparison Exercise

April 7, 2009
Author(s)
Daniel W. Bearden, Mark Viant, Jacob Bundy, Ian Burton, Tim Collette, Drew Ekman, Tobias Karakach, Ching Y. Lin, Simone Rochfort, Jeff de Ropp, Quincy Teng, Ron Tjeerdema, John Walter, Huifeng Wu
Several fundamental requirements must be met so that NMR-based metabolomics can be formally adopted into environmental monitoring and chemical risk assessment. Here we report an intercomparison exercise which has evaluated the accuracy, precision and

Monitoring Organic contaminants in Eggs of Alaskan Glaucous & Glaucous-winged Gulls (Larus hyperboreous & L. glaucescens)

April 7, 2009
Author(s)
Stacy S. Schuur, Paul R. Becker, Michael B. Ellisor, Amanda J. Moors, Rebecca S. Pugh, David G. Roseneau
Gull eggs have been used to monitor contaminants in many parts of the world. The Seabird Tissue Archival & Monitoring Project (STAMP) is a long-term program designed to track trends in pollutants in northern marine environments using seabird eggs. Glaucous

Standard Reference Materials to Support Measurement of Fatty Acids

April 7, 2009
Author(s)
Lane C. Sander, Michele M. Schantz, Katherine E. Sharpless, Stephen A. Wise
The National Institute of Standards and Technology offers a variety of natural-matrix and solution-based Standard Reference Materials (SRMs) that are characterized for fatty acid composition. The natural-matrix SRMs are intended primarily for use as

T7-Based Linear Amplification of Low Concentration mRNA Samples using Beads and Microfluidics for Global Gene Expression Measurements

April 7, 2009
Author(s)
Jason G. Kralj, Audrey Player, Hope Sedrick, Matt S. Munson, David Petersen, Samuel P. Forry, Paul Meltzer, Ernest Kawasaki, Laurie E. Locascio
We show single-cell level linear amplification of gene expression libraries immobilized on a microfluidic packed bed. This is a critical step in the Eberwine process, which is used to amplify messenger RNA (mRNA) for gene expression profiling. Microarray

Ultrasmooth Gold as a Top Metal Electrode for Molecular Electronic Devices

April 7, 2009
Author(s)
Mariona Coll Bau, Christina A. Hacker, Lauren H. Miller, Daniel R. Hines, E. C. Williams, Curt A. Richter
In the emerging area of molecular electronics, fabrication of reliable metallic contacts remains one of the most critical challenges. Nanotransfer printing (nTP) is an attractive low-cost non-destructive technique to provide contact to organic monolayers

Accurate Picometers for DC and Low-Frequency Displacement Measurement

April 6, 2009
Author(s)
Jon R. Pratt, Douglas T. Smith, Lowell Howard
We have developed a fiber-optic interferometer optimized for best performance in the frequency range from DC to 1 kHz, with displacement linearity of 1 % over a range of 25 nm, and noise-limited resolution of 2 pm [1]. The interferometer uses a tunable

Book Review of Introduction to Modern Thermodynamics

April 6, 2009
Author(s)
Robert N. Goldberg
The book Introduction to Modern Thermodynamics by Dilip Kondepudi (John Wiley & Sons, Hoboken, NJ, 2008, ISBN 978-0-9470-01598-8) is reviewed for Angewandte Chemie.

Effect of Line Width Roughness on Optical Scatterometry Measurements

April 6, 2009
Author(s)
Brent C. Bergner, Thomas Germer, Thomas Suleski
Line width roughness (LWR) has been identified as a potential source of uncertainty in scatterometry measurements, and characterizing its effect is required to improve the method s accuracy and to make measurements traceable. In this work, we extend

Extending the Mixture Fraction Concept to Address Under-Ventilated Fires

April 6, 2009
Author(s)
Kevin B. McGrattan, Jason E. Floyd
A common technique in computational fluid dynamics (CFD) modeling of fire is to assume single step, infinitely fast combustion, in which case the transport equations of all gas species can be combined into one for a single conserved scalar called the

Use of Semantic Mediation in Manufacturing Supply Chains

April 6, 2009
Author(s)
Peter O. Denno, Edward J. Barkmeyer Jr., Fabian M. Neuhaus
This case discusses lessons learned about enabling interoperability using semantic methods in three automotive industry projects spanning 8 years. In each project, the essential form of the solution is to reconcile differences in viewpoint of entities

DC Internal Inductance for a Conductor of Rectangular Cross Section

April 3, 2009
Author(s)
Christopher L. Holloway, Edward Kuester
In this paper, the DC internal inductance for conductors with rectangular cross-section is investigated. Using a quasistatic Green's function, the magnetic fields inside a rectangular conductor are derived. These magnetic field expressions are used to
Displaying 28501 - 28525 of 73697
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