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Displaying 38676 - 38700 of 73829

Applications of Sinkhorn Balancingto Counting Problems

July 1, 2004
Author(s)
Isabel M. Beichl, F Sullivan
We describe a gneral Monte Carlo technique based on work of Knuth for estimating the size of trees in backtrack algorithms. This method, based on importance sampling, is used to estimate the number of partial and complete matchings in a bipartite graph

Aqueous Solubility of Volatile Nonelectrolytes

July 1, 2004
Author(s)
Allan H. Harvey, M T. Fernandez-Diaz, J L. Alvarez
The thermodynamics of solution of voletile cormponents in water is reviewed and expressed both in terms of the Henry's constant and the vapor-liquid distribution coefficient. The procedures required to calculate these quantities from experimental data are

Correlation of the Reaction Front With Roughness in Chemically Amplified Photoresists

July 1, 2004
Author(s)
Ronald L. Jones, Vivek M. Prabhu, D M. Goldfarb, Eric K. Lin, Christopher L. Soles, Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Wen-Li Wu, M Angelopoulos
A model bilayer geometry is used to examine fundamental contributions of in-situ reaction front profile width on resulting line edge roughness after development in standard 0.26 N tetramethyl ammonium hydroxide aqueous base developer. The bilayer geometry

Deviations From Equilibrium of Thallium Level Populations in a Metal Halide Arc Lamp

July 1, 2004
Author(s)
D Karahourniotis, John J. Curry, E Drakakis, Eric C. Benck
The excitation equilibrium in a metal halide lamp was studied using a method based on optically thick lines without the assumption of local thermodynamic equilibrium (LTE). The lamp has a diameter of 15.4 mm, an electrode gap of 28 mm, and was operated

Differential Cross Sections for Elastic Scattering of Electrons by Atoms and Solids

July 1, 2004
Author(s)
Aleksander Jablonski, Francesc Salvat, Cedric J. Powell
Differential cross sections (DCSs) for elastic scattering of electrons by neutral atoms are extensively used in studies of electron transport in solids and liquids. A new NIST database has recently been released with DCSs calculated from a relativistic

DNA Displacement Assay Integrated into Microfluidic Channels

July 1, 2004
Author(s)
Rebecca A. Zangmeister, Michael J. Tarlov
This paper describes the development of a unique fluorescence based DNA diagnostic assay incorporated into a microfluidic channel that does not require labeling of the target sequence prior to analysis. The assay is based on the displacement of a short

Emissivity Modeling of Thermal Radiation Sources With Concentric Grooves

July 1, 2004
Author(s)
A Prokhorov, Sergey Mekhontsev, Leonard Hanssen
Monte Carlo based specialized software has been applied to the statistical modeling of effective emissivity of radiators with concentric grooves of trapezoidal and triangular profile. A specular-diffuse model is used in which the thermal emission from the

Extreme-Ultraviolet Efficiency Measurements of Freestanding Transmission Gratings

July 1, 2004
Author(s)
D R. McMullin, D L. Judge, Charles Tarrio, Robert E. Vest, F Hanser
We report the results of transmission and diffraction measurements at EUV wavelengths (4-30 nm) for two gratings, one with a line density of 5000 mm -1 and the other 2500 mm -1. Measurements were made to provide absolute transmission efficiency at central

Fire Dynamics Simulator (Version 4) - User's Guide

July 1, 2004
Author(s)
Kevin B. McGrattan
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) modelof fire-driven fluid flow. The software described in this document solves numerically a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an

Fracture Toughness Measurement of Chromium Nitride Films on Brass

July 1, 2004
Author(s)
M Krishnamurthy, Ivar E. Reimanis, J Berger, Elizabeth S. Drexler
Two methods of measureing the fracture toughness of films are critically examined using well-characterized films of CrN and Cr 2N approximately 6(mu)m in thickness bonded to brass. The first method invokes a model developed by Beuth and Klingbeil in which

Gradient Reference Specimens for Advanced Scanned Probe Microscopy

July 1, 2004
Author(s)
D Julthongpiput, Michael J. Fasolka, Eric J. Amis
Recent years have seen the emergence of a new generation of SPM techniques, which intend to measure chemical, mechanical, and electro/optical properties on the nanoscale. Currently, these techniques provide qualitative (or semi-quantitative) data, often

Green Bank Telescope Detection of New Interstellar Aldehydes: Propenal and Propanal

July 1, 2004
Author(s)
J M. Hollis, P R. Jewell, Francis J. Lovas, A Remijan, H Mollendal
The new interstellar molecules propenal (CH2CHCHO) and propanal (CH3CH2CHO) have been detected largely in absorption toward the star-forming region Sagittarius B2(N) by means of rotational transitions observed with the 100 m Green Bank Telescope (GBT)
Displaying 38676 - 38700 of 73829
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