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Displaying 38101 - 38125 of 74067

Liposomes As Model Cellular Systems

December 21, 2004
Author(s)
Laurie E. Locascio, Wyatt N. Vreeland, Andreas Jahn, Michael Gaitan
The discovery that phospholipids spontaneously form fluid-filled bubbles when exposed to aqueous solution was first made by Alec Bangham in the early 1960's while studying the effects of phospholipids on blood clotting in the Babraham Institute in England

TRC Thermodynamic Tables - Non-Hydrocarbons, Supplement No. 92

December 20, 2004
Author(s)
Michael D. Frenkel
New table for butyl ethanoate containing the density for the real fluid at selected temperatures and pressures. New table for 1-methylethyl ethanoate containing the density for the real fluid at selected temperatures and pressures. New table for ethyl

Algorithm xxx: Airy Functions

December 15, 2004
Author(s)
Bruce R. Fabijonas, Daniel W. Lozier, Frank W. Olver
We present a Fortran 90 module which computes the solutions of Airy's differential equation, and their derivatives, both on the real line and in the complex plane. The computational methods are numerical integration of the differential equation and

Semiconductor Factory and Equipment Clock Synchronization for e-Manufacturing

December 15, 2004
Author(s)
Ya-Shian Li-Baboud, Brad Van Eck
This study describes the potential methods, challenges, and recommendations for addressing factory and equipment clock synchronization and time stamping. The report also discusses why these are critical to the industry as the upcoming generations of tools

STEP, XML, and UML: Complementary Technologies

December 15, 2004
Author(s)
Russell S. Peak, Joshua Lubell, Vijay Srinivasan, Stephen C. Waterbury
One important aspect of product lifecycle management (PLM)is the computer-sensible representation of product information. Over the past 15 years or so, several languages and technologies have emerged that vary in their emphasis and applicability for such

Transport coefficients of the Lennard-Jones model fluid. III. Bulk viscosity

December 15, 2004
Author(s)
Karsten Meier, Arno D. Laesecke, Stephan Kabelac
In an extensive computer simulation study, the transport coefficients of the Lennard-Jones model fluid were determined with high accuracy from equilibrium molecular dynamics simulations. In the frame of time-correlation function theory, the generalized

Interlayer Exchange Coupling

December 13, 2004
Author(s)
Mark D. Stiles
In magnetic multilayers, in which ferromagnetic layers are separated by non-magnetic spacer layers, the magnetizations are coupled by interactions across the spacer layer. One type of coupling, bilinear exchange coupling, originates from the quantum well

Samples and Standards

December 13, 2004
Author(s)
Richard M. Lindstrom, C Yonezawa
For analytical accuracy, the detailed interaction of neutrons with the sample is of more importance in prompt-gamma activation analysis (PGAA) with a neutron beam than in conventional activation analysis. Selection of an optimum sample size and shape is

Zigzag-shaped magnetic sensors

December 13, 2004
Author(s)
Fabio C. da Silva, Willard C. Uhlig, Anthony B. Kos, Susan A. Schima, Joe Aumentado, John Unguris, David P. Pappas
Magnetism in zigzag-shaped thin-film elements is investigated using scanning electron microscopy with polarization analysis, magnetotransport measurements, and micromagnetic simulations. We find that the angle of magnetization alternates along the length

Report of the 89th National Conference on Weights and Measures

December 9, 2004
Author(s)
Kenneth S. Butcher, Steven E. Cook, Linda D. Crown, K M. Dresser, H V. Oppermann, R C. Suiter, Juana S. Williams
The 89th Annual Meeting of the National Conference on Weights and Measures (NCWM) was held July 11 through July 15, 2004, at the Pittsburgh Hilton and Towers in Pittsburgh, PA. The theme of the meeting was, Changes and Opportunities. Reports by the NCWM

Adding Water Vapor Radiometer Data to GPS Carrier-Phase Time Transfer

December 7, 2004
Author(s)
C Hackman, Judah Levine
When analyzing GPS carrier-phase time transfer (GPSCPTT) data, it is often necessary to estimate the zenith troposphere delay (ZTD) at each site as a function of time. That is because the index of refraction of the troposphere varies rapidly. Both the ZTD

Coping with Overload on the Network Time Protocol Public Servers

December 7, 2004
Author(s)
David Mills, Judah Levine, Richard Schmidt, David Plonka
The public time servers operated by USNO and NIST provide time synchronization, directly or indirectly, to millions of Internet computers today. The load in the form of processor cycles and network traffic has doubled in the last two years and could
Displaying 38101 - 38125 of 74067
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