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Journals

Rapid Structural and Chemical Characterization of Ternary Phase Diagrams Using Synchrotron Radiation

October 1, 2003

Author(s)

Eliot D. Specht, A Rar, George M. Pharr, E P. George, P Zschack, H Hong, J Ilavsky

The complete ternary Cr-Fe-Ni system is grown on A12O3(0001) substrates by sequential deposition of layers of graded thickness followed by annealing to...

Surface Oxidation Kinetics of SiC Powders in Wet and Dry Air Studied by X-ray Photoelectron Spectroscopy and Bremsstrahlung-Excited Auger Electron Spectroscopy

October 1, 2003

Author(s)

T N. Wittberg, P S. Wang, Stephen M. Hsu

Silicon carbide powder samples were heated at temperatures between 600 C and 850 C in wet and dry air to investigate the effect of moisture on the oxidation...

Kinematics of the Sagittarius B2(N-LMH) Molecular Core

October 1, 2003

Author(s)

J M. Hollis, J A. Pedelty, D A. Boboltz, S Y. Liu, Lewis E. Snyder, Patrick Palmer, Francis J. Lovas, P R. Jewell

Ethyl cyanide (CH3CH2CN) emission and absorption have been imaged with the Very Large Array toward Sagittarius B2(N-LMH) by means of the 5(15)-4(14) rotational...

Nanocrystal Molecules and Chains

October 1, 2003

Author(s)

J F. Diaz, W Jaskolski, J Planelles, Javier Aizpurua, Garnett W. Bryant

The electron energy structure of linear artificial molecules and one-dimensional chains formed of spherical semiconductor nanocrystals is investigated with and...

Cluster-Assembled Materials Based on Na₆Pb

October 1, 2003

Author(s)

J Zhao, Rui-Hua Xie

In experimental mass spectra of lead-sodium mixed clusters, an exceptionally abundant and stable Na 6Pb cluster has been discovered. [C. H. Yeretzian et al...

Design and Performance of Capping Layers for Extreme-Ulatraviolet Multilayer Mirrors

October 1, 2003

Author(s)

Sasa Bajt, H N. Chapman, Nhan Nguyen, J Alameda, J C. Robinson, M Malinowski, E Gullikson, Andrew Aquila, Charles Tarrio, Steven Grantham

Multilayer lifetime has emerged as one of the major issues for the commercialization of extreme-ultraviolet lithography (EUVL). We describe the performance of...

Diffusion-Controlled Electron-Transfer Reactions in Ionic Liquids

October 1, 2003

Author(s)

A Skrzypczak, Pedatsur Neta

The Reactions of Pyridinyl

Stoichiometric Preference in Copper-Promoted Oxidative DNA Damage by Ochratoxin A

October 1, 2003

Author(s)

R A. Manderville, W M. Calcutt, J Dai, G Park, I G. Gillman, R E. Noftle, A K. Mohammed, M. Dizdaroglu, H Rodriguez, S A. Akman

The ability of the fungal carcinogen, ochratoxin A (OTA, 1), to facilitate copper-promoted oxidative DNA damage has been assessed using supercoiled plasmid DNA...

A Double Negative (DNG) Composite Medium Composed of Magnetodielectric Spherical Particles Embedded in a Matrix

October 1, 2003

Author(s)

Christopher L. Holloway, Edward Kuester, James R. Baker-Jarvis, Pavel Kabos

In this paper we study a composite medium consisting of insulating magneto-dielectric spherical particles embedded in a background matrix. using results from...

Sources of Uncertainty in the Nose-to-Nose Sampler Calibration Method

October 1, 2003

Author(s)

Nicholas Paulter, Donald R. Larson

We analyze the nose-to-nose (ntn) method for use as an accurate sampler calibration method. The variations in the measurement of the sampler impulse response...

Turnstile Operation Using a Silicon Dual-Gate Single-Electron Transistor

October 1, 2003

Author(s)

Yukinori Ono, Neil M. Zimmerman, Kenji Yamazaki, Yasuo Takahashi

A single-electron turnstile has been demonstrated using a silicon-based dual-gate single-electron transistor (SET). Each gate controls independently the closing...

Temperature Dependence of the Kinetics of the Acylase Hydrolysis Reaction by Differential Stopped Flow Microcalorimetry

October 1, 2003

Author(s)

M Stodeman, Frederick P. Schwarz

The rate of the hydrolysis of N-acetyl-L-methionine by porcine acylase I in 0.1 M phosphate buffer, which is reduced by acetate product inhibition, was...

Electrostatic Influence on Ion Transport through the alpha HL Channel

October 1, 2003

Author(s)

M Misakian, John J. Kasianowicz

The current-voltage relationship of a single Staphylococcus aureus α-hemolysin(αHL) channel is nonlinear, rectifying, and depends on the bulk pH and the ionic...

Averaged Transition Conditions for Electromagnetic Fields at a Metafilm

October 1, 2003

Author(s)

Edward Kuester, Mohamed Mohamed, Christopher L. Holloway, Melinda Picket-May

This work derives generalized sheettransition conditions (GSTCs) for the average electromagnetic fields across a surface distribution of electrically small...

Influence of Barium Dissolution on the Electrokinetic Properties of Colloidal BaTiO₃ in an Aqueous Medium

October 1, 2003

Author(s)

S K. Lee, Vincent A. Hackley, U Paik

Hystersis in the electrokinetic behavior of hydrothermally synthesized colloidal BaTiO 3 is observed during sequential acid and base titrations. Ba 2+ dissolved...

Crystal Structure of Escherichia cole Protein ybgl, a toroidal Structure with a Dinuclear Metal Site

September 30, 2003

Author(s)

Jane E. Ladner, G Obmolova, A Teplyakov, A J. Howard, P P. Khil, R D. Camerini-Otero, G L. Gilliland

Evolution of a Performance Metric for Urban Search and Rescue Robots (2003)

September 30, 2003

Author(s)

Adam S. Jacoff, Brian A. Weiss, Elena R. Messina

This paper discusses the advancement and proliferation of the Reference Test Arenas for Urban Search and Rescue Robots as representative search and rescue...

Osteoblast Cell Membrane Hybrid Bilayers for Studying Cell-Cell Interactions

September 30, 2003

Author(s)

John T. Elliott, Alessandro Tona, John T. Woodward IV, Curtis W. Meuse, H M. Elgendy, Anne L. Plant

Osteopath-like cells were grown on a surface that presents cell membrane components to the cells in culture. The culture surface was a bilayer formed by the...

Prototype system for superconducting quantum interference device multiplexing of large-format transition-edge sensor arrays

September 25, 2003

Author(s)

Carl D. Reintsema, Joern Beyer, Sae Woo Nam, Steven Deiker, Gene C. Hilton, Kent D. Irwin, Joel N. Ullom, Leila R. Vale, Michael MacIntosh

We discuss the implementation of a time-division SQUID multiplexing system for the instrumentation of large-format transition-edge sensors (TES) arrays. We...

NIST 72. NIST Thermophysical Properties of Air and Air Component Mixtures: AIRPROPS

September 24, 2003

Author(s)

Eric W. Lemmon

AIRPROPS provides an interactive, menu-driven database for calculating the thermophysical properties of standard air and mixtures of nitrogen-argon-oxygen. The...

DNA Base Damage by the Antitumor Agent 3-Amino-1,2,4-Benzotriazine 1,4-Dioxide (Tirapazamine)

September 24, 2003

Author(s)

M Birincioglu, Pawel Jaruga, G Chowdhury, H Rodriguez, Miral M. Dizdar, K Gates

Tirapazamine is a bioreductively activated DNA-damaging agent that selectively kills the hypoxic cells found in solid tomors. This compound shows great clinical...

Atomic Force Microscope Laser Illumination Effects on a Sample and Its Application for Transient Spectroscopy

September 23, 2003

Author(s)

Gyoung H. Buh, Joseph Kopanski

A scanning capacitance microscope (SCM) is used to monitor the irradiation effect on a sample in a conventional atomic force microscope (AFM). The photo...

Phase Transitions Within the Isolated Polymer Molecule: Coupling of the Polymer Threading a Membrane Transition to the Helix-Random Coil, the Collapse, the Adsorption, and the Equilibrium Polymerization Transitions

September 22, 2003

Author(s)

Edmund A. DiMarzio, John J. Kasianowicz

The polymer threading a membrane transition (PTM), which is a first-order thermodynamic phase transition for an isolated linear polymer in the limit of infinite...

Structure and Magnetic Properties of Electrodeposition Co on n-GaAs (001)

September 19, 2003

Author(s)

A X. Ford, John E. Bonevich, Robert D. McMichael, Mark D. Vaudin, Thomas P. Moffat

Co thin films have been electrodeposited on n-type (001) GaAs. The structure and texture of the films were investigated using x-ray diffraction (XRD) and...

Quantum Entanglement of Fock States with Perfectly Efficient Ultraslow Single-Probe Photon Four-Wave Mixing

September 18, 2003

Author(s)

Lu Deng, M. G. Payne

We propose a method to achieve quantum entanglement of two Fock states with perfectly efficient, ultraslow propagation enhanced four-wave mixing. A cold atomic...

Metal Patterning Using Tailored Functional Group Chemistry: Selective, Electroless Deposition of Metals on Self-Assembled Monolayers

September 16, 2003

Author(s)

Christopher D. Zangmeister, Roger D. van Zee

This study investigates the attachment of copper particles to self-assembled monolayers of mercaptobenzoic acids (MBA) on gold substrates. The carboxylate...

Kinetic Isotope Effects in the Active Site of B-Subtilis Chorismate Mutase

September 15, 2003

Author(s)

S. E. Worthington, A. E. Roitberg, Morris Krauss

Kinetic Isotope Effects are determined for the enzyme-catalyzed Claisen rearrangement of chorismate to prephenate using computational methods. The reported...

Interdiffision in Polystyrene and End-Functional Polystyrene Thin Films Near a Solid Surface

September 10, 2003

Author(s)

Chengqing C. Wang, Vivek M. Prabhu, Christopher L. Soles, B D. Vogt, Wen-Li Wu, Eric K. Lin, Sushil K. Satija

Polymer interdiffusion near the polymer/solid interface is studied using neutron reflectometry. Bilayers of hydrogenated polystyrene (hPS) and deuterated...

High-Frequency Characteristics of Metal/Native-Oxide Multilayers

September 5, 2003

Author(s)

Geoffrey S. Beach, Thomas J. Silva, F. T. Parker, A. E. Berkowitz

The high-frequency magnetization dynamics of magnetically soft Co χFe 100-χ metal/native-oxide multilayers were studied as a function of alloy composition (10...

Large-Scale Modeling of Fire Suppression with Water Sprays

September 2, 2003

Author(s)

Kevin B. McGrattan

The mechanisms underlying fire suppression by water can bedivided into gas and solid phase phenomena. Numerical models ofthese phenomena are dependent on the...

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