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Journals

Determining Privileges of Mobile Agents

January 1, 2001

Author(s)

Wayne Jansen

This paper describes a method for controlling the behavior of mobile agent-system entities through the allocation of privileges. Privileges refer to policy...

Mathematics and Measurement

January 1, 2001

Author(s)

Ronald F. Boisvert, Michael J. Donahue, Daniel W. Lozier, Robert D. McMichael, Bert W. Rust

In this paper we describe the role that mathematics plays in measurement science at NIST. We first survey the history behind NIST's current work in this area...

Determination of Double Bond Conversion in Dental Resins by Near Infrared Spectroscopy

January 1, 2001

Author(s)

J W. Stansbury, Sabine H. Dickens

Objectives: This study determined the validity and practicality of near infrared (NIR) spectroscopic techniques for measurement of conversion in dental resins...

In Vitro Tarnish and Corrosion of a Consolidated Silver Material for Direct Filling Applications

January 1, 2001

Author(s)

H J. Mueller

Objectives: A consolidated silver (CS) material, composed of acid activated silver particles has been developed for direct filling applications. The hypothesis...

Dielectric Properties and Microstructure of Ca₅Nb₂Ti0₁₂ and Ca₅Ta₂TiO₁₂

January 1, 2001

Author(s)

Leonid A. Bendersky, J J. Krajewski, R J. Cava

The 1 MHz dielectric properties of Ca 5Nb 2TiO 12 and Ca 5Ta 2TiO 12 compounds were reported recently. Both compounds have a common characteristic dependence of...

The Influence of Grain Size on the Roughening Behavior of Al-Mg Alloys

January 1, 2001

Author(s)

Mark R. Stoudt, Richard E. Ricker

The discontinuouis plastic flow exhibited by numerous aluminum alloys presents significant challenges to the use of aluminum alloys in many automotive...

Cation Ordering types and Dielectric Properties in the Complex Perovskite Ca(Ca_1/3Nb_2/3)Od3^

January 1, 2001

Author(s)

Igor Levin, Julia Y. Chan, Richard G. Geyer, James E. Maslar, Terrell A. Vanderah

In the present work the effects of cation ordering on dielectric properties were isolated by investigating three polymorphs of Ca(Ca 1/3Nb 2/3)O 3 that feature...

Spontaneous Compositional Modulation in the A1GaN Layers of a Thick A1GaN/GaN Multilayer Structure

January 1, 2001

Author(s)

Igor Levin, Lawrence H. Robins, Mark D. Vaudin, J A. Tuchman, E Lakin, M J. Sherman, J Ramer

A periodic modulation with the wavevector parallel to the [0001] direction was observed in the AlGaN layers of a thick AlGaN/GaN multilayer heterostructure...

Does Anyone Know the Real Fracture Toughness? SRM 2100: The World's First Ceramic Fracture Toughness Reference Material

January 1, 2001

Author(s)

George D. Quinn, K Xu, R J. Gettings, J A. Salem, J Swab

Standard Reference Material (SRM) 2100 is the First reference material in the world for the property fracture toughness. The SRM was developed in tandem with...

Effect of Moisture/Aqueous Solutions in Gap Analysis for Durability of Fiber Reinforced Polymer (Frp)

January 1, 2001

Author(s)

Donald L. Hunston, T Juska, V M. Karbhari, R Morgon, C Williams

The increasing use of polymer composite in civil infrastructure, transportation, and the building industry has generated a great need to improve our understand...

The Effect of Pb Contamination on the Solidification Behavior of Sn-Bi Solders

January 1, 2001

Author(s)

Kil-Won Moon, William J. Boettinger, Ursula R. Kattner, C A. Handwerker, D J. Lee

This paper presents experimental results and theoretical calculations to evaluate the effects of Pb contamination on the solidification behavior of Sn-x mass Bi...

Damage Evolution During Microcracking of Brittle Solids

January 1, 2001

Author(s)

A Zimmermann, W Carter, Lin-Sien H. Lum

Microcracking due to thermal expansion anisotropy is considered based on a finite element model. A polycrystalline microstructure is generated via Monte Carlo...

Effects of Fiber Length and Volume Fraction on the Reinforcement of Calcium Phosphate Cement

January 1, 2001

Author(s)

Hockin D. Xu, F Eichmiller, P R. Barndt

A self-setting calcium phosphate cement (CPC) transforms into solid hydroxyapatite during setting at body temperature, and has been used in a number of medical...

Effect of Silicon Carbide Whisker-Silica Heat Treatment on the Reinforcement of Dental Resin Composites

January 1, 2001

Author(s)

Hockin D. Xu, Janet Quinn

The strength and fracture resistance of dental resin composites need to be improved in order to extend their use to large stress-bearing crown and multiple-unit...

The Boundary Lubrication Properties of Model Esters

January 1, 2001

Author(s)

P M. McGuiggan

The friction of three chemically distinct esters was measured in order to determine how molecular architecture influences friction. The friction coefficients of...

Solid-State NMR Investigation of Paramagnetic Nylon-6 Clay Nanocomposites. 1. Crystallinity, Morphology, and the Direct Influence of Fe3+ on Nuclear Spins

January 1, 2001

Author(s)

David L. VanderHart, A Asano, Jeffrey W. Gilman

Solid-State NMR Investigation of Paramagnetic Nylon-6 Clay Nanocomposites. 2. Measurement of Clay Dispersion, Crystal Stratification, and Stability of Organic Modifiers

January 1, 2001

Author(s)

David L. VanderHart, A Asano, Jeffrey W. Gilman

Correlations of the Boson Peak With Positron Annihilation in Series of Polycarbonate Copolymers

January 1, 2001

Author(s)

Christopher L. Soles, Robert M. Dimeo, Dan A. Neumann, A Kisliuk, Alexei Sokolov, J -. Liu, A F. Yee

Effects of a Nanoscopic Filler on the Structure and Dynamics of a Simulated Polymer Melt and the Relationship to Ultrathin Films

January 1, 2001

Author(s)

Francis W. Starr, T B. Schroder, S C. Glotzer

Analyzing Load History Dependence of Fracture in Structural Adhesives: History Lesson

January 1, 2001

Author(s)

Donald L. Hunston

Investigation of Two Broad Features Often Observed in MALDI Mass SPectra of Synthetic Polymers

January 1, 2001

Author(s)

R J. Goldschmidt, Charles M. Guttman

The origins of two broad, unresolved features often observed in MALDI mass spectra of synthetic polymers are investigated. One occurs in the lower mass regions...

Silica Surface Treatment Effects on the Dynamics of Poly(Dimethyl Siloxane) by Time-of-Flight Neutron Spectroscopy

January 1, 2001

Author(s)

A Nakatani, K S. Kwan, R Ivkov, P Papanek

Erratum: Shear Viscosity of Phase-Separating Polymer Blends with Viscous Asymmetry [PRE 63, 061403 (2001)]

January 1, 2001

Author(s)

H Jeon, Erik K. Hobbie

Isotopic Selectivity in Ultrathin Langmuir-Blodgett Membranes of a Cross-Linked Cellulose Derivative

January 1, 2001

Author(s)

A R. Esker, H Grull, G Wegner, Sushil K. Satija, Charles C. Han

Computational Materials Science and Industrial R&D: Accelerating Progress

January 1, 2001

Author(s)

S C. Glotzer, James A. Warren

String Formation in Sheared Polymer Blends: Coalescence, Breakup, and Finite Size Effects

January 1, 2001

Author(s)

Kalman D. Migler

The Dynamics of Confined Polycarbonate Chains Probed with Incoherent Neutron Scattering

January 1, 2001

Author(s)

Christopher L. Soles, Jack F. Douglas, Robert M. Dimeo

The mean-square atomic displacement of thin (1015 to 75 ) polycarbonate films supported on Si wafers is measured using incoherent elastic neutron scattering...

In Situ Imaging of Highly Charged Ion Irradiated Mica

January 1, 2001

Author(s)

L P. Ratliff, John D. Gillaspy

We have studied the modification of mica surfaces due to the impact of Xe44+ ions by imaging the ion-exposed surfaces with atomic force microscopy in vacuum. By...

Extreme Ultraviolet Metrology at SURF III

January 1, 2001

Author(s)

Charles S. Tarrio, Robert E. Vest, S Grantham, Thomas B. Lucatorto

The last two decades have seen the development normal-incidence multiplayer mirrors and semiconductor photodiodes for extreme ultraviolet (EUV) radiation...

Design and Evaluation of A Simple Ultralow Vibration Vacuum Environment

January 1, 2001

Author(s)

John R. Lawall, Ernest G. Kessler

A vibration-isolated platform in a high-vacuum environment designed for prototyping optical interferometers is described. The system provides isolation from...

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