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 41126 - 41150 of 73970

Uncertainty Analysis of Reflectance Colorimetry

June 1, 2003
Author(s)
E A. Early, Maria E. Nadal
The specification of the color of an object is important, sometimes crucially, to its acceptability for an intended application. When quantitative measurements are used to determine the color of an object, an uncertainty is required to satisfy the

Uncertainty Calculation for the Ratio of Dependent Measurements

June 1, 2003
Author(s)
C M. Wang, H K. Lyer, J Hannig
In this paper we consider the problem of computing an uncertainty interval a ratio with a prescribed confidence level. Although an exact confidence interval procedure, known as the Fieller interval, is available for this problem, practitioners often use

Virtual Environment for Manipulating Microscopic Particles with Optical Tweezer

June 1, 2003
Author(s)
Yong-Gu Lee, Kevin W. Lyons, Thomas W. LeBrun
In this paper, we use virtual reality techniques to define an intuitive interface to a nanoscale manipulation device. This device utilizes optical methods to focus laser light to trap and reposition nano-to-microscopic particles. The underlying physics are

VNA Calibration Software Manual

June 1, 2003
Author(s)
Dylan Williams, Jack Wang, Uwe Arz
This software algorithm combines a decade of experience in applying orthogonal distance regression and other iterative techniques to solving vector-network-analyzer (VNA) calibrations. The new software features a robust algorithm capable of finding

Monitoring Polymer/Clay Nanocomposites Compounding Using a Dielectric Slit Die

May 30, 2003
Author(s)
Anthony J. Bur, S C. Roth, M M. McBrearty
A new in-line process monitoring instrument, a dielectric slit die, was used to examine compounding of polymer/clay nanocomposites. It is a multi-purpose sensing device for measuring polymer dielectric, rheological and optical properties during extrusion

Specific Antibody-DNA Interaction: A Novel Strategy for Tight DNA Recognition

May 27, 2003
Author(s)
S M. Di Pietro, J M. Centeno, M L. Cerutti, M F. Lodeiro, D U. Ferreiro, L G. Alonso, Frederick P. Schwarz, F Goldbaum, G de Prat-Gay
Taking advantage of the extreme stability of a protein-DNA complex, we obtained highly specific monoclonal antibodies against a predetermined palindromic double stranded DNA sequence, corresponding to the binding site of the E2 transcriptional regulator of

ThermoML - An XML-Based Approach for Storage and Exchange of Experimental and Critically Evaluated Thermophysical and Thermochemical Property Data 2. Uncertainties

May 26, 2003
Author(s)
Robert D. Chirico, Michael D. Frenkel, Vladimir Diky, K N. Marsh, R C. Wilhoit
ThermoML is an XML-based approach for storage and exhange of experimental and critically evaluated thermophysical and thermochemical property data. Extensions to the ThermoML schema for the expression of uncertainties are described. Basic principles, scope

Gold-Black Coatings for Freestanding Pyroelectric Detectors

May 23, 2003
Author(s)
John H. Lehman, Evangelos Theocharous, George P. Eppeldauer, Chris Pannell
We describe the process of depositing gold-black on thin, freestanding pyroelectric detector substrates and compare this with previous work documented in the literature. We have evaluated gold-black coatings on thin, freestanding pyroelectric detector

Electricity Division Programs, Activities, and Accomplishments

May 21, 2003
Author(s)
James K. Olthoff, Barry A. Bell
This book describes the research programs, activities, and recent accomplishments of the Electricity Division organized by research project. After the project descriptions is a list of the calibration services that the Division provides, NRC Postdoctoral

A Test Shell for Developing Automated Commissioning Tools for BACnet Systems

May 20, 2003
Author(s)
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby
spite advances in building automation technology, many building control systems do not work as intended. Thorough commissioning of control systems can significantly improve operation but it is manually intensive and thus expensive and often neglected

Effects of Hydrolytic Degradation on In Vitro Biocompatibility of Poly (d,l-lactic)

May 20, 2003
Author(s)
S Yoneda, William F. Guthrie, D S. Bright, C A. Khatri, F W. Wang
In order to investigate the effects of hydrolytic degradation on the biocompatibility of poly(d,l-lactic acid) [P(d,l-LA)], the initial attachment of MC3T3-E1 osteoblast-like cells on various degraded P(d,l-LA) disks was assessed. MC3T3-E1 cells were

Cyrogenic pulsed inductive microwave magnetometer

May 15, 2003
Author(s)
Anthony B. Kos, John P. Nibarger, Radek Lopusnik, Thomas J. Silva, Zbigniew J. Celinski
A cryogenic pulsed inductive microwave magnetometer is used to characterize the switching dynamics in thin-film materials at low temperatures and microwave frequencies. The system is contained inside a 20-cm-dia ultrahigh vacuum chamber and cooled by a

Defect Related Switching Field Reduction in Small Magnetic Particle Arrays

May 15, 2003
Author(s)
Michael J. Donahue, G Vertesy, Martha Pardavi-Horvath
An array of 42 m square, 3 m thick garnet particles has been studied. The strong crystalline uniaxial anisotropy of these particles results in the stable remanent state being single domain with magnetization parallel to the film normal. Magnetooptic

Electron Beam Stimulated Spin Reorientation

May 15, 2003
Author(s)
T L. Monchesky, John Unguris, Robert Celotta
Using Scanning Electron Microscopy with Polarization Analysis (SEMPA), we observed the electron beam induced switching of the magnetic state of epitaxial single-crystal Fe(110) films grown on atomically flat cleaved GaAs(110). For low film thickness the

High-Frequency Measurements of Spin Valve Films and Devices

May 15, 2003
Author(s)
Shehzaad F. Kaka, John P. Nibarger, Stephen E. Russek, N. A. Stutzke, S. L. Burkett
High-frequency measurements of spin-valve films and devices, made using several different measurement techniques, are presented and compared. Pulsed inductive measurements were made on sheet films and provide insight into the intrinsic dynamical properties
Displaying 41126 - 41150 of 73970
Was this page helpful?