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Journals

Ab-Initio Energetics of Transition Metal Ordering in Decagonal Al-Co-Cu

January 21, 2000

Author(s)

M Widom, I Al-Lehyani, Yijun Wang, Eric J. Cockayne

We perform ab-initio total energy calculations for approximants to a model of decagonal A1CoCu. These calculations support previously proposed chemical ordering...

Relativistic Red Shift with 1 × 10^-16 Uncertainty at the NIST, Boulder

January 21, 2000

Author(s)

Marc A. Weiss, Neil Ashby

In Situ Characterization of Catalytic Propylene Oxidation on the Pt (111) Surface

January 17, 2000

Author(s)

A M. Gabelnick, A T. Capitano, D J. Burnett, Daniel A. Fischer, J L. Gland

The catalytic oxidation of propylene with both propylene and oxygen in the gas phase has been characterized on the Pt(111) surface. In situ soft x-ray kinetic...

Networking of Welding Applications: A Tutorial

January 16, 2000

Author(s)

William G. Rippey, James D. Gilsinn, L Flitter

Welding

Gapless Mean-Field Theory of Bose-Einstein Condensation

January 15, 2000

Author(s)

D A. Hutchinson, Karen G. Burnett, K Dodd, S A. Morgan, M Rusch, M Zaremba, N P. Proukakis, A Griffin, Mark A. Edwards, Charles W. Clark

We present a topical review of the development of finite-temperature field theories of Bose-Einstein condensation in weakly interacting atomic gases. We...

Chlorination Chemistry. 2. Rate Coefficients, Reaction Mechanism, and Spectrum of the Chlorine Adduct of Allene

January 12, 2000

Author(s)

D B. Atkinson, Jeffrey W. Hudgens

Cavity ring-down (CRD) spectroscopy and ab initio calculations have determined the reaction rate coefficients, mechanism, and thermochemistry relevant to the...

Room-temperature Single-electron Memory Made by Pulse-mode Atomic Force Microscopy Nano-oxidation Process on Atomically Flat Alpha-alumina Substrate

January 10, 2000

Author(s)

K Matsumoto, Y Gotoh, T Maeda, John A. Dagata, J S. Harris

A single-electron memory was fabricated using the improved pulse-mode atomic force microscopy nano oxidation process which oxidized the surface of the thin...

Converting System Failure Histories Into Future Win Situations

January 7, 2000

Author(s)

D Wallace, David R. Kuhn

Most complex systems today contain software, and systems failures activated by software faults can provide lessons for software development practices and...

Real-Time Measurements of the Pseudodielectric Function of Low-Temperature-Grown GaAs

January 6, 2000

Author(s)

Donald A. Gajewski, Jonathan E. Guyer, Joseph G. Pellegrino

We present real-time, in situ spectroscopic ellipsometry (SE) measurements of the pseudodielectric function = + i of low-temperature-grown GaAs (LTG-GaAS)...

High-Speed Grinding of Silicon Nitride with Electroplated Diamond Wheels, I. Wear and Wheel Life

January 3, 2000

Author(s)

T W. Hwang, Christopher J. Evans, Eric P. Whitenton, S Malkin

An investigation is reported on high speed grinding of silicon nitride using electroplated single-layered diamond wheels. The present paper is concerned with...

Entanglement of Four Particles

January 1, 2000

Author(s)

C A. Sackett, D Kielpinski, B E. King, Christopher Langer, V Meyer, C J. Myatt, M A. Rowe, Q A. Turchette, Wayne M. Itano, David J. Wineland, C Monroe

Quantum mechanics allows for many-particle wavefunctions that cannot be factorized into a product of single-particle wavefunctions, even when the constituent...

Sympathetic Cooling of Trapped Ions for Quantum Logic

January 1, 2000

Author(s)

D Kielpinski, B E. King, C J. Myatt, C A. Sackett, Q A. Turchette, Wayne M. Itano, C Monroe, David J. Wineland

One limit to the fidelity of quantum logic operations on trapped ions arises from heating of the ions collective modes of motion. Sympathetic cooling of the...

Real-Time Displacement Measurements With a Fabry-Perot Cavity and a Diode Laser

January 1, 2000

Author(s)

Lowell P. Howard, Jack A. Stone Jr.

We present the basic operating principles of a traceable measurement system for use with scanned probe microscopes and nanometer-resolution displacement sensors...

An Extended Corresponding State Model for the Thermal Conductivity of Refrigerants and Refrigerant Mixtures

January 1, 2000

Author(s)

Mark O. McLinden, S Klein, Richard A. Perkins

The extended corresponding states (ECS) model of Huber et al. (Huber, M.L., Friend, D.G., Ely, J.F. Prediction of the thermal conductivity of refrigerants and...

Premixed Carbon Monoxide-Nitrous Oxide-Hydrogen Flames: Measured and Calculated Burning Velocities With and Without Fe(CO)5

January 1, 2000

Author(s)

Gregory T. Linteris, M D. Rumminger, Valeri I. Babushok

The burning velocity of premixed carbon monoxide-nitrous oxide flames (background water levels of 5 to 15 ppm) has been determined experimentally for a range of...

Polymer Layered Silicate Nanocomposites: Thermal Stability of Organic Cationic Treatments

January 1, 2000

Author(s)

Jeffrey W. Gilman, A B. Morgan, Richard H. Harris Jr., Paul C. Trulove, H DeLong, T E. Sutto

Nanocomposites result from the combination of materials with different properties at the nanometer scale. Some examples of these include: polymers combined with...

Flammability of Polystyrene-Clay Nanocomposites

January 1, 2000

Author(s)

A B. Morgan, Jeffrey W. Gilman, Richard H. Harris Jr., C L. Jackson, C A. Wilkie, J Zhu

Research in the area of condensed phase flame retardants for polymers usually builds upon existing technologies, such as metal hydroxides (alumina, magnesium...

Reduced Gravity Combustion of Thermoplastic Spheres

January 1, 2000

Author(s)

Jiann C. Yang, Anthony P. Hamins, Michelle K. Donnelly

A series of low-gravity experiments were conducted to investigate the combustion of supported thermoplastic polymer spheres under varying ambient conditions...

Combustion Research Studies at the National Institute of Standards and Technology

January 1, 2000

Author(s)

Takashi Kashiwagi, William L. Grosshandler, Anthony P. Hamins, William M. Pitts, Cary Presser, Wing Tsang

The National Institute of Standards and Technology (NIST) is a federal agency within the Technology Administration of the Department of Commerce. NIST's primary...

Suppression of a Non-Premixed Flame Behind a Step

January 1, 2000

Author(s)

William L. Grosshandler, R Charagundla, Anthony P. Hamins, Kevin B. McGrattan, Cary Presser

Because of its many positive attributes, halon 1301 or trifluorobromomethane (CF 3Br), has been used as a fire extinguishing agent in many applications...

Ladars for Construction Assessment and Update

January 1, 2000

Author(s)

Geraldine S. Cheok, William C. Stone, Robert R. Lipman, Christoph J. Witzgall

Work at the National Institute of Standards and Technology (NIST) on laser radar imaging of a construction site is described. The objective of the NIST research...

Raman Intensity Calibration With Glass Luminescence Standards

January 1, 2000

Author(s)

E S. Etz, Wilbur S. Hurst, Steven J. Choquette

This Paper describes the NIST development of standards and procedures for the calibration of the Raman Spectral Intensity. The work is based on the NIST...

The Protein Data Bank

January 1, 2000

Author(s)

H M. Berman, J Westbrook, Z. Feng, G L. Gilliland, Talapady N. Bhat, H Weissig, N Shindyalov, P E. Bourne

The Protein Data Bank (PDB) is the single worldwide repository of structural data of biological macromolecules. This paper describes the goals of the PDB, the...

Composition of Plaque and Saliva Following Use of an Α-tricalcium Phosphate-Containing Chewing Gum and a Subsequent Sucrose Challenge

January 1, 2000

Author(s)

Gerald L. Vogel, Z Zhang, Clifton M. Carey, A K. Ly, Laurence C. Chow, H M. Proskin

Previous studies demonstrated that chewing of a 2.5% (mass fraction) α-tricalcium phosphate-fortified (a-TCP) experimental chewing gum released sufficient...

A Conceptual Model for Pervasive Computing

January 1, 2000

Author(s)

L P. Ciarletta, Alden A. Dima

As an emerging field, pervasive computing has not had the opportunity to develop a conceptual model similar to the OSI Reference Model used to describe computer...