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Journals

Large Scale Simulations of Single and Multi-Component Flow in Porous Media

July 1, 1999

Author(s)

Nicos Martys, John G. Hagedorn, D S. Goujon, J E. Devaney

We examine the utility of the lattice Boltzmann method for modeling fluid flow in large microstructures. First, results of permeability calculations are...

Thermochemistry of Silicon-Containing Materials

July 1, 1999

Author(s)

P.A.G. O'Hare

Digital Images and Computer Modelling

July 1, 1999

Author(s)

Edward J. Garboczi, Dale P. Bentz, Nicos Martys

This chapter describes how digital images of porous materials can be analyzed to give information about the structure and properties of the material, describes...

Sampling Accessories for Infrared Spectrometry

July 1, 1999

Author(s)

Thomas J. Bruno

Characterization of Power Electronics System Interconnect Parasitics Using Time Domain Reflectometry

July 1, 1999

Author(s)

Huibin Zhu, Allen R. Hefner Jr., Jih-Sheng Lai

The significance of interconnect parasitics of power electronics system is their affects on converters' EMI-related performances, such as voltage/current spikes...

Rockwell Hardness - A Method-Dependent Standard Reference Material

July 1, 1999

Author(s)

Samuel R. Low III, R J. Gettings, Walter S. Liggett Jr, Jun-Feng Song

Rockwell hardness is not a fundamental physical property of a material. It is a method-dependent measurement of the deformation of the material to an applied...

X-Ray-Absorption Edge Separation Using Diffraction Anomalous Fine-Structure

July 1, 1999

Author(s)

Bruce D. Ravel, Charles E. Bouldin, H Renevier, J -. Hodeau, J -. Berar

When two or more absorption edges in a material are sufficiently close in energy, Extended X-ray-Absorption Fine-Structure (EXAFS) spectroscopy may be of...

Radiance Temperatures (in the Wavelength Range 521 nm to 1500 mn) of Rhenium and Iridium at Their Melting Points by a Pulse-Heating Technique

July 1, 1999

Author(s)

J L. McClure, K Boboridis, A Cezairliyan

The melting-point radiance temperatures (at seven wavelengths in the range 521 nm to 1500 nm) of rhenium and iridium were measured by a pulse-heating technique...

Adsorption From Solutions on Synthetic Hydroxyapatite: Nonaqueous Versus Aqueous Solvents

July 1, 1999

Author(s)

D N. Misra

It is useful in restorative dentistry and etiology of bone diseases to know that certain general rules may be derived from a priori considerations of the...

VARMAS After Twelve

July 1, 1999

Author(s)

George D. Quinn

The Versailles Advanced Materials and Standards VAMAS project is a forum for prestandardization research. It has helped spread awareness of new testing and...

Analysis and Computation of Travelling Wave Solutions of Bistable Differential-Difference Equations

July 1, 1999

Author(s)

C E. Elmer, E S. Vanleck

We consider a variant of Newton's method for solving nonlinear differential-difference equations arising from traveling wave equations of large class of...

Radiance Temperatures (in the Wavelength Range 527 to 1500 nm) of Palladium and Platinum at Their Melting Points by a Pulse-Heating Technique

July 1, 1999

Author(s)

J L. McClure, A Cezairliyan, E Kaschnitz

The radiance temperatures (at seven wavelengths in the range 527 to 1500 nm) of palladium and platinum at their respective melting points were measured by a...

Fatty Acid Modified Dendrimers in Bulk and Solution: Single Chain Neutron Scattering from Dendrimer Core and Fatty Acid Shell

July 1, 1999

Author(s)

A Ramzi, Barry J. Bauer, R L. Scherrenberg, P Froehling, J Joosten, Eric J. Amis

Small angle neutron scattering (SANS) has been applied to extract the single-chain form factors of the fatty acid (FA) and the dendrimer components in bulk and...

Exposure of Self-Assembled Monolayers to Highly Charged Ions and Metastable Ions

July 1, 1999

Author(s)

L P. Ratliff, Ronaldo Minniti, A Bard, E W. Bell, John D. Gillaspy, D Parks, A J. Black, G M. Whitesides

The doses of neutral metastable argon atoms (Ar*) and highly charged xenon ions (HCIs) required to damage self-assembled monolayers (SAMs) of alkanethiolates on...

Multidetector Hemispherical Polarized Optical Scattering Instrument

July 1, 1999

Author(s)

Thomas A. Germer

A multidetector optical scattering instrument is described and characterized. The instrument has twenty-eight detectors surrounding and substantially covering...

Polarized Light Scattering Measurements of Roughness, Subsurface Defects, Particles, and Dielectric Layers on Silcon Wafers

July 1, 1999

Author(s)

Thomas A. Germer, Li Piin Sung

This article outlines theoretical and experimental results for polarized light scattering from five different sample configurations: surface roughness of a...

Effects of Defocus and Algorithm on Optical Step Height Calibration

July 1, 1999

Author(s)

Theodore D. Doiron, Theodore V. Vorburger, P Sullivan

Defocus effects on step height measurements by interferometric microscopy are estimated using different algorithms to calculate the step height. The...

Committee Reports for the 84th National Conference on Weights and Measures, July 25-29, 1999, Burlington, VT

July 1, 1999

Author(s)

G M. Ugiansky, J L. Land

The 84th Annual Meeting of the National Conference on Weights and Measures will be held in Burlington, VT, July 25-29, 1999. The theme of the conference is...

Reduction Potential of the Sulfhydryl Radical. Pulse Radiolysis and Laser Flash Photolysis Studies of the Formation and Reactions of SH and HSSH in Aqueous Solutions

July 1, 1999

Author(s)

T N. Das, Robert E. Huie, Pedatsur Neta, S Padmaja

Formation and reactions of the SH/ S and HSSH /HSS 2- radicals in aqueous solutions have been studied by excimer laser flash photolysis and by pulse radiolysis...

p-Terphenyl Sensitized Photoreduction of CO₂ With Cobalt- and Iron-Porphyrins. Interaction Between CO and Reduced Metalloporphyrins

July 1, 1999

Author(s)

T Dhanasekaran, J Grodkowski, Pedatsur Neta, P Hambright, E Fujita

Iron and cobalt porphyrins (FeP and CoP) are utilized as electron-transfer mediators to effect photochemical reduction of CO 2 in homogeneous solutions. The...

Switching Characteristics of Spin Valve Devices Designed for MRAM Applications

July 1, 1999

Author(s)

Stephen E. Russek, J O. Oti, Y K. Kim

Magnetic Susceptibility Determination of the Relaxation Time for Domain-Wall Motion in Perpendicularly Magnetized, Ultrathin Films

July 1, 1999

Author(s)

C S. Arnold, David P. Pappas, D Dunlavy, D Venus

Geometry Dependence of Nonlinear Effects in High Temperature Superconducting Transmission Lines at Microwave Frequencies

July 1, 1999

Author(s)

James Booth, James A. Beall, David A. Rudman, Leila R. Vale, Ronald H. Ono

Microscopic Image Analysis of Defect Areas in Optical Disks

July 1, 1999

Author(s)

P L'Hostis, Frederick R. Byers, Fernando L. Podio, Xiao Tang

This paper presents techniques developed in the Information Technology Laboratory of the US National Institute of Standards and Technology (NIST/ITL) for...

The NIST WWW High Temperature Superconducting Materials Database (WebHTS Version 2.0)

July 1, 1999

Author(s)

E F. Begley, R G. Munro

The NIST WWW High Temperature Superconducting Materials Database (WebHTS version 2.0) provides evaulated thermal, mechanical, and superconducting property data...

A Critical Comparison Between Time and Frequency Domain Relaxation Functions

July 1, 1999

Author(s)

Chad R. Snyder, F I. Mopsik

Considerable work has been performed on providing a theoretical basis for the KohlrauschWilliamsWatts (KWW) and HavriliakNegami(HN) relaxation functions...

Polarized Light Scattering Measurements of Dielectric Spheres upon a Silicon Surface

July 1, 1999

Author(s)

Li Piin Sung, George W. Mulholland, Thomas Germer

The polarization of light scattered into directions out of the plane of incidence by polystyrene latex spheres upon a silicon substrate was measured for p...

Effects of Mutations of the Active Site Arginine Residues in-4-Oxalocrotonate Tautomerase on the pK_a Values of Active Site Residues and on the pH Dependence of Catalysis

July 1, 1999

Author(s)

R M. Czerwinski, T K. Harris, W H. Johnson, P M. Legler, J T. Stivers, A S. Mildvan, C P. Whitman

The unusually low pK a value of the general base catalyst Pro-1 (pK a = 6.4) in 4-oxalocrotonate tautomerase (4-OT) has been ascribed to both a low dielectric...

Effectiveness of AlN Encapsulate in Annealing Ion-Implanted SiC

July 1, 1999

Author(s)

E Handy, M V. Rao, K A. Jones, M A. Derenge, P Chi, R D. Vispute, T Venkatesan, N A. Papanicolaou, J Mittereder

Aluminum nitride (AlN) has been used as an encapsulate for annealing nitrogen (N), arsenic (As), antimony (Sb), aluminum (Al), and boron (B) ion-implanted 6H...

Kinetic, Stereochemical, and Structural Effects of Mutations of the Active Site Arginine Residues in 4-Oxalocrotonate Tautomerase

July 1, 1999

Author(s)

T K. Harris, R M. Czerwinski, W H. Johnson, P M. Legler, C Abeygunawardana, M A. Massiah, J T. Stivers, C P. Whitman, A S. Mildvan

Three arginine residues (Arg-11, Arg-39, Arg-61) are found at the active site of 4-oxalocrotonate tautomerase in the X-ray structure of the affinity-labeled...

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