NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 29376 - 29400 of 73697

Analysis of Structural Steel in the World Trade Center Investigation

October 16, 2008
Author(s)
Frank W. Gayle, Richard J. Fields, Stephen W. Banovic
In March 2002 NIST became the lead agency in an investigation of the World Trade Center collapse. The investigation addresses many aspects of the catastrophe, from occupant egress to factors affecting how long the Twin Towers stood after being hit by the

Anomalous Relaxation in Entropic Colloidal Gels

October 16, 2008
Author(s)
Erik K. Hobbie, A D. Stewart
Brownian motion in depletion-force networks is studied with video microscopy in confined nearly hard-sphere mixtures. The particle trajectories show anomalous diffusion, while the self part of the van Hove correlation function exhibits a novel scaling in

Any-Order Propagation of the Nonlinear Schroedinger Equation

October 16, 2008
Author(s)
Frederick Strauch
We derive an exact propagation scheme for nonlinear Schr\o}dinger equations. This scheme is entirely analogous to the propagation of linear Schr\o}dinger equations. We accomplish this by defining a special operator whose algebraic properties ensure the

Application of a CMP Model to Tungsten CMP

October 16, 2008
Author(s)
E W. Paul
A general model of chemical mechanical polishing (CMP) has been derived which shows the dependence of the polishing rate on the concentration of chemicals and abrasives in the slurry. This paper applies the model to tungsten CMP and describes the chemistry

Application of Fluorescent Molecules as In-Situ Probes of Bone Cement Cure

October 16, 2008
Author(s)
Francis W. Wang, D G. Sauder
This paper describes the fluorescence behavior of anthracene and Re(CO) 3CIL, (where L=4,7-diphenyl-1,10-phenanthroline) in a commercial bone cement. New in these studies is the observation that the reduction in intermolecular quenching accompanying

Applications of Micro-Ring Resonator Filter Devices

October 16, 2008
Author(s)
S T. Chu, B E. Little, Y Kokubun, W Pan
Recently reported micro-ring resonator filters have demonstrated their compactness and signal processing functions. These features are attractive for large-scale integrated photonic circuits. This paper reviews the development and discusses the potential

Assessment of Error Sources in Rockwell Hardness Measurements

October 16, 2008
Author(s)
Walter S. Liggett Jr, Samuel Low, David J. Pitchure, Jun-Feng Song
In the use of hardness test blocks, the uncertainty due to block non-uniformity can be reduced if one is willing to make measurements at specified locations on the blocks. Statistical methods for achieving this reduction are explained in this paper. The

Atomic Data for Dielectronic Recombination Into C-like Oxygen

October 16, 2008
Author(s)
U I. Safronova, I Murakami, T Kato, D Kato, Y Ralchenko
Energy levels, radiative transition probabilities, and autoionization rates for C-like oxygen (O$^2+}$) including $1s^22s^22pnl$, $1s^22s2p^2nl$, and $1s^22p^3nl$ ($n$=2-8, $l \le n-1$) states are calculated by theHartree-Fock-Relativistic method (Cowan

Atomic Data for Lighting Applications

October 16, 2008
Author(s)
Gillian Nave, Craig J. Sansonetti, Joseph Reader
A major objective of our research program is the observation of spectra of rare earth elements in support of our program of atomic data measurements for lighting applications. Three years ago, NIST acquired a high-resolution Fourier transform spectrometer

Atomic Spectral Line Broadening Bibliographic Database

October 16, 2008
Author(s)
Jeffrey R. Fuhr, H R. Felrice
This is version 1.0 of the National Institute of Standards and Technology (NIST) bibliographic database on atomic spectral line broadening. At present, this database contains approximately 800 recent references, all collected after our last published

Atomic Transition Rates for Neutral Holmium (Ho I)

October 16, 2008
Author(s)
Gillian Nave
Transition rates for 325 lines of Ho I are presented. They have been measured by combining branching fractions obtained by Fourier transform spectrometry with published lifetimes. The uncertainty of the transition rates is 5 % to 10 %.

Audit Trail Device Security [Product Storyboard]

October 16, 2008
Author(s)
Juana Williams
Increasingly, weighing and measuring device manufacturers choose the audit trail as the form of security for their equipment. Features that control the accuracy of measurements (metrological), or can be selected to make a device function properly for a

Automated Monitoring of Thin Film Properties via Ultrasonics

October 16, 2008
Author(s)
Donald L. Hunston
Non-destructively monitoring of the properties in a thin film or layered material (coatings, adhesives, etc.) is a difficult challenge, and yet there are many instances where this would be useful: fabrication (curing or drying), environmental attack, aging

Automatic Generation of Two Classes of Semantic Hypertext Link

October 16, 2008
Author(s)
John M. Tebbutt
Two approaches to the automatic generation of hypertext undertaken at the National Institute of Standards and Technology are reviewed. The first uses Information Retrieval technology to augment each document in a document space with a list of links to

Bethe Logarithms for the 11S, 21S, and 23S States of Helium and Helium-like Ions

October 16, 2008
Author(s)
Jonathan Baker, R C. Forrey, M Jeziorska, J D. Morgan
We have computed the Bethe logarithms for the 1 1S, 21S, and 23S states of helium to about seven figures using the method developed by Charles Schwartz and further developed by Forrey and Hill. Bethe logarithms for the helium-like ions Li +, Be ++, O 6+

Bibliography of NIST Biosystems and Health Publications, 2001-2005

October 16, 2008
Author(s)
Nancy Allmang
This document contains a listing of over 1000 journal articles and conference papers written by National Institute of Standards and Technology (NIST) scientists working in the area of measurements and standards for Biosystems and Health. This includes

Bibliography of NIST Nanotechnology Publications, 2000-2004

October 16, 2008
Author(s)
Nancy Allmang, Mylene S. Ouimette
This document contains a compendium of journal articles and conference papers written by NIST scientists working in the area of Nanotechnology. This includes: nanoscale metrology, nanotribology, nanomaterials, nano-optics, micro-electro-mechanical systems
Displaying 29376 - 29400 of 73697
Was this page helpful?