Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Journals

Determination of Methyl-Substituted Polycyclic Aromatic Hydrocarbons in Diesel Particulate-Related Standard Reference Materials

March 1, 2003

Author(s)

Dianne L. Poster, Bruce A. Benner Jr, Michele M. Schantz, Lane C. Sander, Stephen A. Wise, M. G. Vangel

Development and Analysis of Three Diesel Particulate-Related Standard Reference Materials for the Determination of Chemical, Physical, and Biological Characteristics

March 1, 2003

Author(s)

Dianne L. Poster, M. J. Lopez de Alda, Michele M. Schantz, Lane C. Sander, Stephen A. Wise, M. G. Vangel

Biometric Standards -- A Key to a More Secure World

March 1, 2003

Author(s)

Michael D. Hogan, Fernando L. Podio

Biometric technologies are becoming the foundation of an array of highly secure identification and verification solutions. Over the past eighteen months, the U

Estimation of Q-Factors and Resonant Frequencies

March 1, 2003

Author(s)

Kevin J. Coakley, Jolene D. Splett, Michael D. Janezic, R F. Kaiser

We estimate the quality factor Q and resonant frequency f o of a microwave cavity based on resonance curve observations on an equally-spaced frequency grid. The

Spotlight - Biometric Authentication -- Are You Who You Claim To Be?

March 1, 2003

Author(s)

Michael D. Hogan

The recent establishment of the International Organization for Standardization/International Electrotechnical Commission Joint Technical Committee 1/Subcomittee

Accuracy of Nanoscale Pitch Standards Fabricated by Laser-Focused Atomic Deposition

March 1, 2003

Author(s)

Jabez J. McClelland, W Anderson, C Bradley, M Walkiewicz, R Deslattes, E Jurdik, Robert Celotta

The pitch accuracy of a grating formed by laser-focused atomic deposition is evaluated from the point of view of fabricating nanoscale pitch standard artifacts

R&D Investment Trends: U.S. Needs More High-Tech

March 1, 2003

Author(s)

Gregory C. Tassey

A varied set of barriers inhibit approaching some optimum for R&D investment. Among them is the fact that the majority of R&D is still performed in the

Analysis of Performance Variation Using Query Expansion

March 1, 2003

Author(s)

Alan Smeaton

Information retrieval performance evaluation is commonly made based on the classical recall and precision based figures or graphs. However, important

Change Detection In XML Documents

March 1, 2003

Author(s)

K H. Lee, Y C. Choy, S B. Cho, Xiao Tang, V R. McCrary

This paper presents an efficient algorithm to detect changes between old and new versions of an XML document. The difference between the two versions can be

In Situ TEM Observations of Fracture in Nanolaminated Metallic Thin Films

March 1, 2003

Author(s)

Timothy J. Foecke, D E. Kramer

Fracture of single crystal nanolaminted thin films has been investigated through in situ straining of cross-sectional samples of Cu/Ni nanolaminates grown on Cu

Mechanical, Thermal, and Chemical Properties - Cracking and the Indentation Size Effect for Knoop Hardness of Glasses

March 1, 2003

Author(s)

George D. Quinn, P A. Green, K Xu

The influence of cracking upon apparent Knoop hardness was investigated for five glasses. The Knoop hardnesses decreased with increasing load in accordance with

Magnetization Dynamics Modeled in Magnetic Thin Films

March 1, 2003

Author(s)

Robert D. McMichael

One of the challenges facing designers of high data rate computer hard drives and magnetic memory chips is that for most magnetic metals, it typically takes a

Ru Spacer Thickness Dependences of the Domain Nucleation and Growth in Co/Ru/Co Synthetic Antiferromagnet

March 1, 2003

Author(s)

V S. Gornakov, Valerian I. Nikitenko, William F. Egelhoff Jr., Robert D. McMichael, Alexander J. Shapiro, Robert D. Shull

The relative orientation of Co magnetization vectors in a Co/Ru/Co/Ta structure vary gradually from parallel to antiparallel orientation as a function of Ru

Small-Angle Neutron Scattering Study of the Role of Feedstock Particle Size on the Microstructural Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Deposits

March 1, 2003

Author(s)

H Boukari, Andrew J. Allen, Gabrielle G. Long, J Ilavsky, Jay S. Wallace, C C. Berndt, H Herman

The microstructures of thick plasma-sprayed yttria-stabilized (8% mass) zirconia deposits have been studied in a series of Porod small-angle neutron scattering

Cracking and the Indentation Size Effect for Knoop Hardness of Glasses

March 1, 2003

Author(s)

George D. Quinn, P Green, K Xu

The Knoop Hardness of five glasses as measured over a wide range of indentation loads. Hardness decreased with increasing load in accordance with the classic

Evolution of Strain-Induced Microstructure and Texture in Commercial Aluminum Sheet Under Balanced Biaxial Stretching

March 1, 2003

Author(s)

Stephen W. Banovic, Timothy J. Foecke

The evoluation of surface topography and crystallographic texture was investigated under balanced biaxial stretching in sheets of aluminum alloy 5052 H32. Two

Structure and Dimensions of PAMAM/PEG Dendrimer-Star Polymers

March 1, 2003

Author(s)

R C. Hedden, Barry J. Bauer

Dendrimer-star polymers are prepared by grafting monofunctional poly(ethylene glycol) (PEG) chains of low polydispersity onto the terminal groups of poly

X-Ray Induced Fluorescence Measurement of Density Distributions in a Metal-Halide Lighting Arc

March 1, 2003

Author(s)

John J. Curry, H G. Adler, S Shastri, W -. Lee

The use of x-ray induced fluorescence to measure elemental densities in a metal-halide lighting arc is described. High-energy synchrotron radiation generated on

Exciton States in Quantum Dot Solids: Excitation Transfer and Dynamic Decorrelation

March 1, 2003

Author(s)

Garnett W. Bryant

Coherent exciton transport in Quantum dot solids is determined by electron and hole interdot tunneling and dipole-dipole interdot excitation transfer. We

Kinetics of Carbonyl Sulfide Hydrolysis. 2. Effect of n-Alkanes in Mixtures of Water Plus Hydrocarbon

March 1, 2003

Author(s)

W C. Andersen, Thomas J. Bruno

Carbonyl sulfide (COS), which occurs as an impurity in commercial sources of propane, can hydrolyze in the presence of water to form hydrogen sulfide(H2S) and

Kinetics of Carbonyl Sulfide Hydrolysis. 1. Catalyzed and Uncatalyzed Reactions in Mixtures of Water Plus Propane

March 1, 2003

Author(s)

W C. Andersen, Thomas J. Bruno

Carbonyl sulfide (COS), which occurs as an impurity in commercial sources of propane, can hydrolyze in the presence of water to form hydrogen sulfide(H2S) and

OH Reactivity and UV Spectra of Propane, n-Propyl Bromide, and Isopropyl Bromide

March 1, 2003

Author(s)

S N. Kozlov, Vladimir L. Orkin, Robert E. Huie, Michael J. Kurylo III

The rate constants for the reactions of OH radicals with the 1-bromopropane, 2-bromopropane, and propane were measured using the flash photolysis reasonance

Dielectric Permittivity of Eight Gases Measured with Cross Capacitors

March 1, 2003

Author(s)

James W. Schmidt, Michael R. Moldover

A 4-ring, toroidal cross capacitor was used to measure accurately the relative dielectric permittivity ε(p,T) of He, Ar, N 2, O 2, CH 4, C 2H 6, C 3H 8, and CO

Our Plan for a Wireless Loan Service

March 1, 2003

Author(s)

Nancy Allmang

The article would describe, from a librarian's standpoint, what one library has done to gear up for a wireless LAN. It would discuss specific steps the library

Complex Permittivity Measurements of Common Plastics over Variable Temperatures

March 1, 2003

Author(s)

Billy F. Riddle, James R. Baker-Jarvis, Jerzy Krupka

In this paper we present complex permittivity data at macorwave frequencies for many common plastics from 125 K to 375 K. The measurements were made using a TE

Asymptotic Behavior of a Strain Percolation Model for a Deforming Metal

March 1, 2003

Author(s)

Y Shim, Lyle E. Levine, R M. Thomson, D E. Kramer

In this paper, we present a recent advance in theoretical understanding of a deforming metal, using a strain percolation model which possibly explains spasmodic

Micro-Indentation and Inverse Analysis to Characterize Elastic-Plastic Graded Materials

March 1, 2003

Author(s)

Y Gu, T Nakamura, L Prchlik, S Sampath, Jay S. Wallace

Properties of a graded material were characterized with a procedure based on an inverse analysis. This inverse analysis procedure utilizes experimental records

Last Stage Solidification of Alloys: Theoretical Model of Dendrite-Arm and Grain Coalescence

March 1, 2003

Author(s)

M Rappaz, A Jacot, William J. Boettinger

Hot tearing in castings is closely related to the difficulty of bridging or coalescence of dendrite arms during the last stage of solidfication. The details of

Two Cores in One Grain in the Microstructure of Silicon Nitride Prepared With Aligned Whisker Seeds

March 1, 2003

Author(s)

D S. Park, T W. Roh, B Hockey, Y Takigawa, B D. Han, H D. Kim, Y Yasutomi

The microstructure of silicon nitride with aligned silicon nitride whisker seeds was examined by electron microscopy. Silicon nitride sintered with yttria and

Protein Dynamics in Viscous Solvents

March 1, 2003

Author(s)

G Caliskan, A Kisliuk, A M. Tsai, Christopher Soles, Alexei Sokolov

The principals governing the effective stabilization of tissues and drugs are unclear and effective agents for preservation are discovered largely by trail and

Was this page helpful?