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Journals

Measurement of the Optical Extinction Coefficients of Post-Flame Soot in the Infrared

July 1, 2003

Author(s)

J F. Widmann, Jiann C. Yang, Samuel L. Manzello, George W. Mulholland

The optical extinction coefficients of post-flame soot have been measured in the wavelength range 2.8 micrometers to 4.1 micrometers. A laminar diffusion burner...

Interfacial Reactions of Ti/n-GaN Contacts at Elevated Temperature

July 1, 2003

Author(s)

C J. Lu, Albert Davydov, Daniel Josell, Leonid A. Bendersky

Interfacial reactions in Ti/GaN contacts have been studied using conventional and high-resolution transmission electron microscopy (TEM), energy-filtered TEM...

UML 2 Activity and Action Models

July 1, 2003

Author(s)

Conrad E. Bock

This is the first in a series introducing the activity model in the Unified Modeling Language, version 2 (UML 2), and how it integrates with the action model [1...

Two-Color Photoassociation Spectroscopy of the Lowest Triplet Potential of Na₂

July 1, 2003

Author(s)

L E. de Araujo, J D. Weinstein, S D. Gensemer, F K. Fatemi, Kevin Jones, Paul D. Lett, Eite Tiesinga

We have performed a type of Autler-Townes spectroscopy to locate a number of rovibrational hyperfine levels of the a ^3^ς + u potential, the lowest triplet...

Allele Frequencies for 15 Autosomal STIR Loci on U.S. Caucasian, African American, and Hispanic Populations

July 1, 2003

Author(s)

John M. Butler, R Schoske, Peter M. Vallone, Janette W. Redman, Margaret C. Kline

A total of 700 DNA samples from 3 U.S. Populations were examined at 15 different short tandem repeat (STR) markers commonly used is human identity testing. this...

Crystal Structure of the YchF Protein Reveals Binding Sites for GTP and Nucleic Acid

July 1, 2003

Author(s)

A Teplyakov, G Obmolova, S Y. Chu, J Toedt, E Eisenstein, A J. Howard, G L. Gilliland

The bacterial protein encoded by the gene ychF is 1 of 11 universally conserved GTPases, and the only one whose function is unknown. The crystal structure...

Order/Disorder in Electrodeposited Aluminum-Titanium Alloys

July 1, 2003

Author(s)

Gery R. Stafford, T Tsuda, C L. Hussey

The composition, morphology, and crystallographic microstructure of Al-Ti alloys electrodeposited from two Different chloroaluminate molten salt electrolytes...

Primary Methods for the Measurement of Electrolytic Conductivity

July 1, 2003

Author(s)

R H. Shreiner, F Brinkmann, N E. Dam, E Deak, F Durbiano, E Ferrara, J Fuko, H D. Jensen, M Mariassy, P Spitzer, U Sudmeier, M Surdu, L Vyskocil

Determination of Mercury in SRM Crude Oils and Refined Products by Isotope Dilution Cold Vapor ICP-MS using Closed-System Combustion

July 1, 2003

Author(s)

William R. Kelly, Stephen E. Long, Jacqueline L. Mann

Distribution of Chlorine in Quartz Determined by Neutron Beam Focusing Prompt Gamma Activation Analysis and Micro X-ray Fluorescence

July 1, 2003

Author(s)

Huaiyu H. Chen-Mayer, W J. Heward, Rick L. Paul, F J. Klug, Y Gao

Relative Intensity Correction Standards for Raman Spectroscopy for Excitation with Several Common Laser Wavelengths

July 1, 2003

Author(s)

Steven J. Choquette, Douglas H. Blackburn, E S. Etz, Wilbur S. Hurst

Tools and Procedures for Quantitative Microbeam Isotope Ratio Imaging by Secondary Ion Mass Spectrometry

July 1, 2003

Author(s)

John G. Gillen, David S. Bright

In this work we demonstrate the use of secondary ion mass spectrometry (SIMS) combined with the Lispix image processing program (Bright 1995) to generate...

Resonant Soft X-Ray Photofragmentation of Propane

July 1, 2003

Author(s)

William E. Wallace, Daniel A. Fischer

A comparison was made between the mass spectra of propane (CH6d3^CH 2CH 3) for resonant soft X-ray photofragmentation and electron-impact ionization. The soft X...

The Influence of Silane Coupling Agent Composition on the Surface Characterization of Fiber and on Fiber-Matrix Interfacial Shear Strength

July 1, 2003

Author(s)

E Feresenbet, Gale A. Holmes, D T. Raghavan

Epoxy resins are widely used as the matrix material for fiber reinforced composites in aircrafts, automobiles, ships and housing. Most of the reinforcement in...

An Optimization Approach to Multiple Sequence Alignment

July 1, 2003

Author(s)

Fern Y. Hunt, Anthony J. Kearsley, H H Wan

The problem of multiple sequence alignment is recast as an optimization problem using Markov decision theory. One seeks to minimize the expected or average cost...

Public Key Infrastructures That Safisfy Security Goals

July 1, 2003

Author(s)

William T. Polk, Nelson E. Hastings, A Malpani

This article describes the features of different PKI architectures, and the motivations behind their use. While some PKI architectures (e.g., hierarchies) are...

Effects of Different Whiskers on the Reinforcement of Dental Resin Composites

July 1, 2003

Author(s)

Hockin D. Xu, Janet Quinn, Douglas T. Smith, Anthony A. Giuseppetti, F Eichmiller

Objective: Whiskers were recently used to reinforce dental composites to extend their use to large stress-bearing restorations. The aim of this study was to...

Magnetic and Structural Properties of the 'Brown Phase' Solid Solution Ba(Nd_2-xLa_x)CuO₅

July 1, 2003

Author(s)

Winnie K. Wong-Ng, L Swartzendruber, James A. Kaduk, Lawrence H. Bennett

The compounds BaR 2CuO 5 (R = Y, and lanthanides) are well known impurities that often coexist with the high T c superconductors, Ba 2RCu 3O 6+X. With R=La and...

BaO-Nd₂O₃-CuO_x Subsolidus Equilibria Under Carbonate-Free Conditions at pO₂ = 100 Pa and at pO₂ = 21 kPa

July 1, 2003

Author(s)

Winnie K. Wong-Ng, Lawrence P. Cook, J Suh, R Coutts, Judith K. Stalick, Igor Levin, Qingzhen Huang

Subsolidus phase equilibria of the BaO-Nd 2O 3-CuO x system at pO 2 = 100 Pa (0.1 % O 2 by volume) and at pO 2 = 21 kPa (21 % O 2 by volume) have been...

Energetics of Li Atom Displacements in K1-xLixTa03: First-Principles Calculations

July 1, 2003

Author(s)

S A. Prosandeev, Eric J. Cockayne, Benjamin P. Burton

K 1-xLi xTaO 3 (KLT) solid solutions exhibit a variety of interesting physical phenomena related to large local displacements of Li-ions from ideal perovskite A...

Electron Backscatter Diffraction for Studies of Localized Deformation

July 1, 2003

Author(s)

Roy H. Geiss, Alexana Roshko, Kristine A. Bertness, R R. Keller

Electron backscatter diffraction (EBSD) was used to study localized deformation in two types ofconstrained-volume materials. We present a study of deformation...

Proton NMR Characterization of Room-Temperature Aging After Modest Thermal Cycling in Isotactic Polypropylenes

July 1, 2003

Author(s)

David L. VanderHart, Chad R. Snyder

An proton NMR method, based on simple Bloch-decay spectra in the solid state, is presented that enables one to follow, with excellent sensitivity, structural...

Particles in Silicon Depositon Discharges

July 1, 2003

Author(s)

Alan Gallagher, G Bano, K Rozsa

In a radio frequency or high frequency discharge, electrons are accelerated toward the central plasma region by oscillating sheath electric fields. In a dc...

Excess Noise Generation During Spectral Boradening in Microstructure Fiber

July 1, 2003

Author(s)

J N. Ames, S Ghosh

We observe that nanojoule femtosecond pulses that are spectrally broadened in microstructure fiber acquire excess noise. The excess noise is namifest as an...

Quantum Information With Neutral Atoms as Quibits

July 1, 2003

Author(s)

James V. Porto, S L. Rolston, B L. Tolra, Carl J. Williams, William D. Phillips

One of the essential features of a quantum computer is a quantum register of well-characterized qubits. Neural atoms in optical lattices are a natural candidate...

Momentum-transfer dependence of x-ray Raman scattering at the Be K-Edge

July 1, 2003

Author(s)

C Sternemann, M Volmer, J A. Soininen, H Nagasawa, M Paulus, H Enkisch, G Schmidt, M Tolan, W Schulke

Inelastic x-ray scattering spectra have been measured for energy losses around the Be K-edge in order to perform a systematic study of the dependence of the...

The Expanding NIST Atomic Spectra Database

July 1, 2003

Author(s)

Wolfgang L. Wiese

The NIST Atomic Spectra Database is reviewed, and the additions planned for the near-term and longer range future are discussed. Two examples are presented...

Quantum Information With Neutral Atoms as Qubits

July 1, 2003

Author(s)

James V. Porto, S L. Rolston, B L. Tolra, Carl J. Williams, William D. Phillips

Neutral atoms trapped in periodic optical potentials (optical lattices) offer a possible route toward quantum computation. The atoms can be kept well isolated...

Delivery of High Stability Optical and Microwave Frequency Standards Over an Optical Fiber Network

July 1, 2003

Author(s)

Jun Ye, J L. Peng, R J. Jones, K W. Holman, John L. Hall, D J. Jones, Scott A. Diddams, John E. Kitching, S Bize, James C. Bergquist, Leo W. Hollberg, Lennart Robertsson, L -. Ma

Optical and radio frequency standards located in JILA and NIST laboratories have been connected through a 6.9 km roundtrip optical fiber link. An optical...

Oxidative DNA Damage: Mechanisms, Mutation, and Disease

July 1, 2003

Author(s)

M S. Cooke, M D. Evans, M. Dizdaroglu, J Lunec

Oxidative DNA damage is an inevitable consequence of cellular metabolism, with a propensity for increased levels following toxic insult. Although more than base...

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