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Displaying 48776 - 48800 of 74474

An Overview of Nano-Micro-Meso Scale Manufacturing at the NIST

March 13, 2000
Author(s)
E Amatucci, Nicholas Dagalakis, Bradley N. Damazo, Matthew A. Davies, John Evans, Jun-Feng Song, E C. Teague, Theodore V. Vorburger
The future of nano-, micro- and meso-scale manufacturing operations will be strongly influenced by a new breed of assembly and manufacturing tools that will be intelligent, flexible, more precise, include in-process production technologies and make use of

Cancellation of Laser Dither Modulation From Optical Frequency Standards

March 1, 2000
Author(s)
M S. Taubman, J L. Hall
We demonstrate the removal of the dither modulation from an iodine-stabilized He-Ne laser by using a frequency-modulated acousto-optic modulator and feed-forward techniques. This procedure reduces the linewidth of the beat between this laser and a flywheel

Cobalt-Corrin Catalyzed Photoreduction of CO 2

March 1, 2000
Author(s)
J Grodkowski, Pedatsur Neta
A first attempt to use cobalt corrins (B 12) as homogeneous catalysts for photoreduction of CO 2 to CO and formic acid demonstrates that the corrins act as catalysts for this process and that they are much more efficient than cobalt porphyrins.

Contact Damage in Porcelain/Pd-Alloy Bilayers

March 1, 2000
Author(s)
H Zhao, X Z. Hu, M T. Bush, Brian R. Lawn
An analysis is made of contact damage in brittle coatings on metal substrates, using as a case study a dental porcelain coating of thickness between 0.1 and 1 mm fused onto a Pd alloy base, with spherical indenter of radii 2.38 and 3.98 mm. At large

Design and Testing of NFRad - A New Noise Measurement System

March 1, 2000
Author(s)
Chriss A. Grosvenor, James P. Randa, Robert L. Billinger
The NIST Noise project has constructed and tested a new, automated, coaxial (GPC-7) radiometer for the measurement of noise sources in the 8-12 GHz frequency band. It is an isolated, total-power radiometer that relies on lookup tables for relevant

Determination of the Molecular Mass Distribution of Narrow Polydispersity Polystyrene by MALDI-TOF-MS: Interlaboratory Comparison

March 1, 2000
Author(s)
Kathleen M. Flynn, S Wetzel, William E. Wallace, William R. Blair, R J. Goldschmidt, David L. VanderHart, B M. Fanconi
NIST has sponsored a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) interlaboratory comparison using a well-characterized polystyrene to determine the reproducibility in determining the molecular mass
Displaying 48776 - 48800 of 74474
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