Journals

Ultracold Collision Properties of Metastable Alkaline-Earth Atoms

February 1, 2003

Author(s)

A Derevianko, S. G. Porsev, Svetlana A. Kotochigova, Eite Tiesinga, Paul S. Julienne

Ultra-cold collisions of spin-polarized Mg, Ca, and Sr in the metastable 3P2 excited state are investigated. We show the existence of purely long-range...

The HI0073/HI0074 Protein Pair From Haemophilus Influenzae is a Member of a New Nucleotidyltransferase Family: Structure, Sequence Analyses, and Solution Studies

February 1, 2003

Author(s)

C Lehmann, Kap Lim, V R. Chalamasetty, W Krajewski, E Melamud, Andrey Galkin, A Howard, Z Kelman, Prasad T. Reddy, A Murzin, O Herzberg

The crystal structure of HI0074 from Haemophilus influenzae, a protein of unknown function, has been determined at a resolution of 2.4 . The molecules form an...

Calibrated Waveform Measurement with High-Impedance Probes

February 1, 2003

Author(s)

Pavel Kabos, Howard C. Reader, Uwe Arz, Dylan Williams

We develop an on-wafer waveform calibration technique that combines frequency-domain mismatch corrections to account for the effects of the probe on the...

Determination of Polycyclic Aromatic Hydrocarbons in Diesel Particulate-Related Standard Reference materials by using Gas Chromatography/Mass Spectrometry with Negative Ion Chemical Ionization

February 1, 2003

Author(s)

D. Z. Bezabeh, H. A. Bamford, Michele M. Schantz, Stephen Wise

Determination and Comparison of Nitrated Polycyclic Aromatic Hydrocarbons Measured in Air and Diesel Particulate Reference Materials

February 1, 2003

Author(s)

H. A. Bamford, D. Z. Bezabeh, Michele M. Schantz, Stephen Wise, J. E. Baker

More Diamagnetism Demonstrations

February 1, 2003

Author(s)

Chris Conery, Loren F. Goodrich, Theodore C. Stauffer

The availability of very strong permanent magnets allows observation of phenomena previously difficult to see. The diamagnetism of water and diamagneticly...

Compositional Homogeneity of Ferroelectric (Pb,La)(Ti,Zr)O-₃ Thick Films

February 1, 2003

Author(s)

S Bernik, Ryna B. Marinenko, J Holc, Z Samardzija, M Ceh, M Kosec

Quantified WDS x-ray element maps were used to characterize active PLZT layers on Pt/PLZT/Al 2O 3 substrates, one fired at 1050 C and the other at 1150 C. In...

An Investigation of Particle Dynamics in a Rotating Disk Chemical Vapor Deposition Reactor

February 1, 2003

Author(s)

D M. Kremer, R W. Davis, Elizabeth F. Moore, James E. Maslar, Donald R. Burgess Jr., S H. Ehrman

This paper describes a numerical model for the nucleation, growth and transport of gas phase particles formed during the chemical vapor deposition (CVD) of...

Enhanced Magnetocaloric Effects in R₃(Ga_1-xFe_x)₅O₁₂ (R=Gd, Dy, Ho; 0

January 31, 2003

Author(s)

Virgil Provenzano, J Li, T T. King, E R. Canavan, P Shirron, M J. DiPirro, Robert D. Shull

A series of R 3(Ga1-xFex)5O12 (R=Gd, Dy, Ho; 0 3(Ga0.5Fe0.5)5O12 compound, which was reported in 1992 with possessing enhanced magnetocaloric effects, may be...

Estimating the Work in Integer Partitioning

January 31, 2003

Author(s)

April Andreas, Isabel M. Beichl

For a given set of numbers, the integer partitioning problem is to divide the numbers into two groups, so that the sums of the numbers in each group differ by...

Ignition Propensity and Heat Flux Profiles of Candle Flames for Fire Investigation

January 28, 2003

Author(s)

Scott E. Dillon, Anthony Hamins

Common household open flame and radiant ignition sources are the actual or suspected cause for many fires. Because of their popular use, fire investigators have...

Forensic Analysis of Hair Surface Components Using Off-Line Supercritical Fluid Extraction and Large Volume Injection

January 28, 2003

Author(s)

J V. Goodpaster, J J. Bishop, Bruce A. Benner Jr.

Experimental Demonstration of a Technique to Generate Arbitrary Quantum Superposition States of a Harmonically Bound Spin-1/2 Particle

January 24, 2003

Author(s)

A Ben-kish, B M. Demarco, V Meyer, Mary A. Rowe, Joseph W. Britton, Wayne M. Itano, Branislav M. Jelenkovic, Christopher Langer, Dietrich Leibfried, Till P. Rosenband, David J. Wineland

Using a single, harmonically trapped 9Be+ ion, we experimentally demonstrate a technique for generation of arbitrary states of a two-level particle confined by...

Laser-cooled ion plasmas in Penning Traps

January 23, 2003

Author(s)

John J. Bollinger, J M. Kriesel, T B. Mitchell, L B. King, M J. Jensen, Wayne M. Itano, D H. Dubin

Evidence for Structural Changes in Carboxyl-Terminal Peptides of Transducin Alpha-Subunit Upon Binding a Soluble Mimic of Light-Activated Rhodopsin

January 21, 2003

Author(s)

D M. Brabazon, N G. Abdulaev, John Marino, K D. Ridge

Although a high-resolution crystal structure for the ground state of rhodopsin is now available, portions of the cytoplasmic surface are not well resolved and...

Determination of Cr in Certified Reference Material HISS-1, Marine Sediment, by Cold Plasma Isotope Dilution ICP-MS and INAA: Comparison of Microwave versus Closed (Carius) Tube Digestion

January 16, 2003

Author(s)

William R. Kelly, Karen E. Murphy, D. A. Becker, Jacqueline L. Mann

Thermodynamics of the Lipase-Catalyzed Transesterification of 1-Phenyl-1-Alkanols and Butyl Acetate in Organic Solvents

January 16, 2003

Author(s)

Yadu D. Tewari, David J. Vanderah, J D. Rozzell

The thermodynamics of the lipase-catalyzed transesterification reactions of butyl acetate and 1-phenyl-1-alkanols from C 1 to C 4 have been studied in organic...

Mechanical Behavior of Caulks and Sealants

January 15, 2003

Author(s)

Donald L. Hunston, Christopher C. White

ulks and Sealants are important examples of consumer products where performance depends critically on rheological properties. This work describes the...

Determination of Polycyclic Aromatic Hydrocarbons with Molecular Weight 300 and 302 in Environmental-Matrix Standard Reference Materials by Gas Chromatography/Mass Spectrometry

January 15, 2003

Author(s)

Patricia Schubert, Michele M. Schantz, Lane C. Sander, Stephen Wise

A Mechanism for Brightening: Linear Stability Analysis of the Curvature Enhanced Coverage Model

January 6, 2003

Author(s)

Geoffrey B. McFadden, Sam R. Coriell, Thomas P. Moffat, Daniel Josell, Daniel Wheeler, W Schwarzacher

This work presents experiments and theory describing a mechanism for how brighteners in electrolytes function. The mechanism involves change of local coverage...

Temperature and Field Dependence of High-Frequency Magnetic Noise in Spin Valve Devices

January 6, 2003

Author(s)

N. A. Stutzke, S. L. Burkett, Stephen E. Russek

High-frequency noise of micrometer-dimension spin valve devices has been measured as a function of applied field and temperature. The data are well fit with...

Testing with Model Checker: Insuring Fault Visibility

January 5, 2003

Author(s)

Vadim Okun, Paul E. Black, Yelena Yesha

To detect a fault in software, a test case execution must be chosen so intermediate errors propagate to the output. We describe two modeling methods for...

Single-Cooper-Pair Transistors: Requirements for Robust 2e Periodicity

January 3, 2003

Author(s)

Joe Aumentado, Mark W. Keller, John M. Martinis

The superconducting analog of the single-electron transistor (SET), the single-Cooper-pair transistor (SCPT), is comprised of two ultrasmall tunnel junctions in...

An investigation of two unexplored periodic error sources in differential-path interferometry

January 2, 2003

Author(s)

Tony L. Schmitz, J F. Beckwith

This paper describes two sources of periodic error in differential-path interferometry that have remained largely unexplored: dynamic periodic error that is...

Effect of Acidic Comonomers on Methacrylate Conversion and Mechancial Strength of Bioreactive Composites Based on Amorphous Calcium Phosphate

January 1, 2003

Author(s)

Joseph M. Antonucci, Walter G. McDonough, D W. Liu, Drago Skrtic

Effect of Acidic Comonomers on Methacrylate Conversion and Mechanical Strength of Bioactive Composites Based on Amorphous Calcium Phosphate

January 1, 2003

Author(s)

Joseph M. Antonucci, Walter G. McDonough, Da-Wei Liu, Drago Skrtic

Prior research utilizing a monomer system consisting of the dental monomers Bis-GMA and TEGDMA at equal masse levels with neutral, hydrophilic monomers...

Chemistry of Silanes Interfaces in Dental Polymers and Composites

January 1, 2003

Author(s)

Joseph M. Antonucci, Sabine H. Dickens, Bruce O. Fowler, H H. Xu, Walter G. McDonough

The performance and service life of glass- or ceramic-filled polymeric composites depend on the nature of their resin, filler and interfacial phases as well as...

MALDI of Structured Polymer Particles

January 1, 2003

Author(s)

Barry J. Bauer, Kathleen M. Flynn

A layered preparation method is introduced that produces structured MALDI targets with well-defined phase sizes and compositions. Tri-a-naphthyl benzene is a...

Combinatorial Investigation of Dewetting: Polystyrene Thin Films on Gradient Hydrophilic Surfaces

January 1, 2003

Author(s)

K M. Ashley, J C. Meredith, Eric J. Amis, D T. Raghavan, Alamgir Karim

Practical Aspects of Acoustic Emission Source Location by a Wavelet Transform

January 1, 2003

Author(s)

Marvin A. Hamstad, K S. Downs, Agnes O'Gallagher

An algoithmic approach to improve the accuracy of AE source location was demonstrated by using a large database of wideband-acoustic-emission-(AE)-modeled...