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Displaying 29526 - 29550 of 73929

231 - Standard Reference Data Program

October 16, 2008
Author(s)
J R. Rumble
Makes reliable scientific and technical data available to researchers, engineers and many other users. The program generates sets of critically evaluated data and widely disseminates them both as computer databases and publications. The breadth and scope

232 - Standard Reference Material Program

October 16, 2008
Author(s)
J R. Rumble
NIST has pioneered and still leads the development of certified referencematerials for quality assurance of measurements through the StandardReference Materials Program. NIST provides more than 1,200 differentStandard Reference Materials (SRMs) that are

255 - Electronic Information and Publications Program (EIPP)

October 16, 2008
Author(s)
L A. Frederick
The Electronic Information and Publications Program (EIPP) is responsible for the development, implementation and maintenance ofcomputerized information systems in the Office of Information Services and the NIST Publications Program.The EIPP directs the

260 - Office of Weights and Measures

October 16, 2008
Author(s)
H V. Oppermann
Promotes uniformity for over 750 state and local jurisdictions in weights and measures standards, laws, and practices to facilitate trade and protect U.S. businesses and citizens; supports the National Conference on Weights and Measures, an organization of

3D Cellular Morphometrics With Multi-Scale Topographical Constraint

October 16, 2008
Author(s)
A Sehgal, Alamgir Karim, Eric J. Amis
The three dimensional cytoplasmic spread of osteoblast like MC3T3-E1 cells with substrate topography was investigated by atomic force microscopy (AFM). The analysis of AFM images as applied to an ensemble of cells from programmed multiple scans under

A Critical Compilation of Energy Levels and Spectral Lines of Neutral Boron

October 16, 2008
Author(s)
Alexander Kramida, A N. Ryabtsev
Observed spectral lines of neutral boron are critically compiled. Fromselected best measurements, an improved and extended set of energy levels isderived for the two most abundant isotopes, 11B and 10B. The ionization energyis determined to a greater

A Cross-Referencing Web Resource of Pre-Clinical Data for AIDS

October 16, 2008
Author(s)
Talapady N. Bhat, Anh D. Nguyen, G Noble, L Cooney, M Nasr, A Wlodawer, K Das
Structure-based drug discovery relies on efficient compilation and analysis of chemical, biological, pre-clinical and structural data. Factors such as inconsistent naming standards, publications and private archives with scattered and incomplete data, Web

A Description of the Fluoroelastomer Coating Evolution as a Polymer Processing Aid

October 16, 2008
Author(s)
Mathurin G. Meillon, D Morgan, D Bigio, Kalman Migler, S Oriani
For decades, fluoroelastomers have been used as polymer processing aids (PPA). Previous works have measured the thickness of the PPA coating, its effects on the polymer/die interface, and proposed several mechanisms of PPA coating. In this work, the

A Dielectric Slit die for In-Line Monitoring of Polymer Componding

October 16, 2008
Author(s)
Anthony J. Bur, M M. McBrearty
The dielectric slit die is a new instrument designed for real-time monitoring of polymer compounding. It is a multi-purpose sensing device for measuring dielectric, rheological and optical properties during extrusion. The instrument is mounted at the exit

A Finite Volume PDE Solver Using Python (FiPy)

October 16, 2008
Author(s)
Jonathan E. Guyer, Daniel Wheeler, James A. Warren
We present an object oriented partial differential equation (PDE) solver written in Python based on a standard finite volume (FV) approach.The solution of coupled sets of PDEs is ubuquitous in the numerical simulation of science problems. Numerous PDE

A General Technique for Calibrating Indicating Instruments

October 16, 2008
Author(s)
R White, M T. Clarkson
A method for calibrating indicating instruments that exploits the combinatorial properties of a set of different-valued, and mostly uncalibrated, artefacts is described. The paper presents the underlying principles of the method, its limitations, and

A Gravimetric Approach to the Standard Addition Method in Instrumental Analysis 1

October 16, 2008
Author(s)
William R. Kelly, Bruce S. MacDonald, William F. Guthrie
A general mathematical formulation for the method of standard additions is presented that has universal applicability. It is based on gravimetry rather than volumetry which reduces the preparation time, gives greater flexibility to design because one is

A Guide to Phenomenological Damping Formulations

October 16, 2008
Author(s)
J O. Rantschler, C Alexander
There are several phenomenological damping formulations currently in use in the literature. Beyond the Landau-Lifshitz equation (LL) and the Bloch-Bloembergen equations (BB), there is Safonov and Bertram s (SB) method designed to bridge between microscopic

A History of Encasements; Technology Preserving the Charters of Freedom

October 16, 2008
Author(s)
Christopher J. Evans
In its centennial year, the National Institute of Standards and Technology (NIST) will complete the second set of hermetic encasements for the nation's founding documents - the Declaration of Independence, the Constitution, and the Bill of Rights. This

A Mean-Field Model of Extrinsic Line Broadening in Ferromagnetic Resonance

October 16, 2008
Author(s)
Robert D. McMichael
A model of ferromagnetic resonance in inhomogeneous films is described that includes interactions in a mean-field approximation. The mean-field model yields linewidth values that span the range from intrinsic linewidth for strong interactions to fully

A merged-beams energy-loss technique for electron-ion excitation: Absolute total cross sections for o 5+ (2s> 2p)

October 16, 2008
Author(s)
E W. Bell, X Q. Guo, J L. Forand, K Rinn, D R. Swenson, J S. Thompson, G H. Dunn, M E. Bannister, D C. Gregory, Ray A. Phaneuf, A C. Smith, A Muller, C A. Timmer, E K. Wahlin, B D. DePaola, D S. Belic
A merged-beams electron-energy-loss technique is described by which absolute cross sections can be measured for near-threshold electro-impact excitation of multiply charged ions. Results are reported here for absolute total electron-impact excitation cross

A Method to Quantify Uncertainty Due to Bias in Chemical Analyses

October 16, 2008
Author(s)
Raghu N. Kacker
A widely accepted approach to assure that the certified property of a chemical reference material is independent of the method of analysis is to analyze by two or more judiciously chosen methods. The statistical problem then is to determine the consensus
Displaying 29526 - 29550 of 73929
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