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Displaying 33826 - 33850 of 74165

Project Team 4, the 2000-2005 Reference Standards Committee of the USP Council of Experts and Its Advisory Panel, USP Staff, Consultant: Official USP Reference Standards: Metrology Concepts, Overview, and Scientific Issues and Opportunities

December 1, 2006
Author(s)
Reenie M. Parris
The United States Pharmacopeia (USP) is a private standards-setting body created in 1820 by practitioners who wished to promote the quality of therapeutic products in commerce. The principal product of USP, then and now, is the United States Pharmacopeia

Remote Time Calibrations via the NIST Measurement and Analysis Service

December 1, 2006
Author(s)
Michael A. Lombardi, Andrew N. Novick
NIST now offers a new remmote calibration service desinged to assist laboratories who maintain an accurate local time standard. The service monitors the local time standard by continuously comparing it to the national time standard, and reports the

Remote Time Calibrations via the NIST Time Measurement and Analysis Service

December 1, 2006
Author(s)
Michael A. Lombardi, Andrew N. Novick
NIST now offers a new remote calibration service designed to assist laboratories who maintain a accurate local time standard. The service monitors the local time standard by continuously comparing it to the national time standard, and reports the

Standards and Measurements for Assessing Bone Health

December 1, 2006
Author(s)
Herbert S. Bennett, Andrew Dienstfrey, Thomas Fuerst, Lawrence T. Hudson, Tammy L. Oreskovic, John Shepherd
This paper reports and discusses the results of the recent ISCD-NIST USMS Workshop on Standards and Measurements for Assessing Bone Health. The purpose of the Workshop was to assess the status of efforts to standardize and compare results from dual-energy

Synthetic Incoherence Via Scanned Gaussian Beams

December 1, 2006
Author(s)
Zachary H. Levine
Tomography, in most formulations, requires an incoherent signal. For a conventional transmission electron microscope, the coherence of the beam often results in diffraction effects which limit the utility of a tilt series with conventional tomographic

Terminology for High-Speed Sampling-Oscilloscope Calibration

December 1, 2006
Author(s)
Dylan Williams, Tracy S. Clement, Paul D. Hale, Andrew Dienstfrey
We discuss procedures for calibrating high-speed sampling oscilloscopes at the National Institute of Standards and Technology, and the terminology associated with those calibrations. The discussion clarifies not only the calibration procedures, but how to

Using Laser-Cooled Atoms as a Focused Ion Beam Source

December 1, 2006
Author(s)
James L. Hanssen, E Dakin, Jabez J. McClelland, M Jacka
The authors describe a new method for creating a high quality focused ion beam using laser-cooled neutral atoms in a magneto-optical trap as an ion source. They show that this new technique can provide spot resolutions and brightness values that are better

Advancing Factory-Wide Data Quality for APC Applications

November 30, 2006
Author(s)
Harvey Wohlwend, Gino Crispieri, Ya-Shian Li-Baboud
Accurate clock synchronization and time stamping plays a significant role in ensuring data quality as the semiconductor industry faces an imminent data explosion with the deployment of Interface A. Standards and Guidelines significantly ease the deployment

Approximating Periodic Solutions of Autonomous Delay Differential Equations

November 30, 2006
Author(s)
David E. Gilsinn
Machine tool chatter has been characterized as isolated periodic solutions or limit cycles of delay differential equations. Determining the amplitude and frequency of the limit cycle is sometimes crucial to understanding and controlling the stability of
Displaying 33826 - 33850 of 74165
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