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Journals

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...

Optical Measurements of Structure and Orientation in Sheared Carbon-Nanotube Suspensions

March 1, 2003

Author(s)

Erik K. Hobbie, Haonan Wang, H W. Kim, Charles C. Han, E A. Grulke, Jan Obrzut

We describe an optical metrology for measuring shear-induced structure and orientation in dilute dispersions of multiwalled carbon nanotubes. Small-angle...

Shear-Induced Structure in Polymer Blends With Viscoelastic Asymmetry

March 1, 2003

Author(s)

Erik K. Hobbie, H Jeon, Haonan Wang, H W. Kim, D J. Stout, Charles C. Han

Light scattering and optical microscopy have been used to measure the morphology as a function of shear rate and composition in polymer blends with viscoelastic...

Line Assignments and Global Analysis of the Tunneling-Rotational Microwave Absorption Spectrum of Dimethyl Methylphosphonate

March 1, 2003

Author(s)

N Ohashi, J Pyka, G Y. Golubiatnikow, Jon T. Hougen, R D. Suenram, Francis J. Lovas, A Lesarri, Y Kawashima

Line assignments were carried out for about 600 Fourier transform microwave transitions for dimethyl methylphosphonate involving levels of all six symmetry...

Transition From E to H Mode Discharge in Pulse-Modulated Inductively Coupled Plasmas

March 1, 2003

Author(s)

M Edamura, Eric C. Benck

Time-resolved measurements of pulse-modulated inductively coupled plasmas were carried out by using a Langmuir probe. It was found that under a certain...

Creation of a Dipolar Superfluid in Optical Lattices

March 1, 2003

Author(s)

B Damski, L Santos, E Tiemann, M Lewenstein, Svetlana A. Kotochigova, Paul S. Julienne, W.H. Zoller

We show that by loading a Bose-Einstein condensate (BEC) of two different atomic species into an optical lattice, it is possible to achieve a Mott-insulator...

Modeling Distributed Kinetics in Isolated Semiconductor Quantum Dots

March 1, 2003

Author(s)

M Kuno, D P. Fromm, S T. Johnson, Alan Gallagher, David Nesbitt

tailed modeling of recently observed nonexponential fluorescence intermittency in colloidal semiconductor quantum dots (QDs) is presented. In particular...

Decay and Revival of Phase Coherence of a Bose-Einstein Condensate in a One-Dimensional Lattice

March 1, 2003

Author(s)

O Morsch, J H. Muller, D Ciampini, M Cristiani, P B. Blakie, Carl J. Williams, Paul S. Julienne, E Arimondo

The mode structure of a Bose-Einstein condensate non-adiabatically loaded into a one-dimensional optical lattice is studied by analyzing the visibility of the...

Structure and Vibrational Dynamics of the Halogen-Substituted Butynes HC Equivalent to CCH₂CH₂X (X=F,Cl,Br) from Molecular-Beam High-Resolution Microwave and Infrared Spectroscopy

March 1, 2003

Author(s)

J C. Keske, F S. Rees, R D. Suenram, Brooks H. Pate

The pure rotational and high-resolution acetylenic C-H stretch rovibrational spectra of a series of substituted butynes, HC=CCH 2CH 2X (X=F,Cl,Br), are reported...

Phase Inversion in Rotational-Anisotropy of Second Harmonic Generation at Si(001) Interfaces

March 1, 2003

Author(s)

Y Q. An, Steven T. Cundiff

The phase of the azimuthal dependence of second harmonic generation from Si(001) interfaces is observed to undergo an inversion for the correct polarization...

Flexible and Rapidly Configurable Femtosecond Pulse Generation in the Mid-IR

March 1, 2003

Author(s)

S M. Foreman, D J. Jones, Jun Ye

We demonstrate a new experimental approach for flexible femtosecond pulse generation in the mid-IR using difference-frequency-generation from two tightly...

The Rate and Equilibrium Constants for the Reaction NO₃ + Cl^- forward arrow over back arrow} NO₃^- + Cl in Aqueous Solutions

March 1, 2003

Author(s)

G A. Poskrebyshev, Robert E. Huie, Pedatsur Neta

The rate and equilibrium constants for reaction (1): NO 3 + Cl - back arrow over forward arrow} Cl + NO 3 - in aqueous solutions were studied by pulse...

Calculation of Electron Inelastic Mean Free Paths (IMFPs) VII. Reliability of the TPP-2M IMFP Predictive Equation

March 1, 2003

Author(s)

S Tanuma, Cedric J. Powell, David R. Penn

We report comparisons of electron inelastic mean free paths (IMFPs) determined from our predictive IMFP equation TPP-2M and reference IMFPs calculated from...

Isochoric Heat Capacity Measurements for 0.5 H₂O + 0.5 D₂O Mixture in the Critical Region

March 1, 2003

Author(s)

N. G. Polikhronidi, I M. Abdulagatov, Joe W. Magee, G. V. Stepanov

Radiometric Calibration and Absolute Calibration of the Marine Optical System (MOS) Bench Unit

March 1, 2003

Author(s)

C Habauzit, Steven W. Brown, Keith R. Lykke, B. Carol Johnson, M E. Feinholz, M Yarbrough, D K. Clark

Radiometric Characterization and Absolute Calibration of the Marine Optical System (MOS) Bench Unit

March 1, 2003

Author(s)

C Habauzit, Steven W. Brown, Keith R. Lykke, B. Carol Johnson, M Feinholz, M Yarbrough, D K. Clark

The Marine Optical Spectrograph (MOS) is a dual CCD-based spectrograph system developed for in-water measurements of down-welling solar irradiance, Ε d, and up...

Near-Field Polarimetric Characterization of Semi-Crystalline Polymer Systems

March 1, 2003

Author(s)

S N. Goldie, Michael J. Fasolka, Lori S. Goldner, Jeeseong C. Hwang, Kathryn Beers

We have studied crystallization in thin films of isotactic polystyrene (iPS) to better understand the morphology and formation of these structures through the...

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