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Journals

Matrix Clusters and Polymer-Matrix Adducts in the MALDI Analysis of Polystyrene

January 1, 2000

Author(s)

R J. Goldschmidt, Charles M. Guttman

The formation of matrix cluster ions and of polymer-matrix adduct ions in the matrix-assisted laser desorption/ionization (MALDI) analysis of polystyrene was...

Internal Dynamics and Elasticity of Confined Entropic Gels

January 1, 2000

Author(s)

Erik K. Hobbie, A D. Stewart

NIST Reference Material for UHMWPE

January 1, 2000

Author(s)

John A. Tesk

Spatially Heterogeneous Dynamics in Liquids: Insights From Simulation

January 1, 2000

Author(s)

S C. Glotzer

The Potential Energy Landscape of the +/- J Ising Spin Glass

January 1, 2000

Author(s)

S C. Glotzer, N Jans, P H. Poole

Time-Dependent, Four-Point Density Correlation Function Description of Dynamical Heterogeneity and Decoupling in Supercooled Liquids

January 1, 2000

Author(s)

S C. Glotzer, V N. Novikov, T B. Schroder

Determination of the Dielectric Constant of Nanoparticles. 1. Dielectric Measurements of Buckminsterfullerene Solutions

January 1, 2000

Author(s)

Chad R. Snyder, Jack F. Douglas

Reference Data and Materials Needed

January 1, 2000

Author(s)

John A. Tesk

Morphological Characterization of Blends of Metal-Sulfonated Poly(styrene) and a Methylated Poly(amide) by Solid State NMR

January 1, 2000

Author(s)

David L. VanderHart, Y Feng, Charles C. Han, Robert A. Weiss

Various blends of atactic, low-MW ({approximately} 4000), metal-sulfonated poly(styrene) (MSPS) and a higher-MW ({approximately} 25,000) poly(amide) (PA) were...

Nanocomposites of Molecularly Dispersed Polyamidoamine (PAMAM) Dendrimers

January 1, 2000

Author(s)

G Kim, C L. Jackson, T J. Prosa, Da-Wei Liu, Barry J. Bauer

The preparation of PAMAM dendrimer nanocomposites in an IPN polymer matrix was investigated as a function of generation using transmission electron microscopy...

Microwave Dielectric Characterization of Polyaniline Composites

January 1, 2000

Author(s)

Jan Obrzut, C. K. Chiang

Dielectric permittivity of polyaniline (emerdaline salt) and its dispersions in epoxy glasses have been investigated in the frequency rangebetween 1 GHz to 18...

Size Invariance of Polyelectrolyte Dendrimers

January 1, 2000

Author(s)

G Nisato, R Ivkov, Eric J. Amis

In order to quantify the swelling response of polyelectrolyte dendrimers in aqueous solutions as affected by changes in solution conditions, we have studied...

Shear-Induced Novel Structure in Phase Separated Polybutadiene/Polyisoprene Blends

January 1, 2000

Author(s)

H Jeon, A Nakatani, Charles C. Han

We studied the shear-induced phase formation (SIPF) or phase inversion (SIPI) of viscoelastic polybutadiene (LPB)/polyisoprene (HPI) blends by light scattering...

Observation-of Resonances Associated With Stereo and Regio Defects in the Crystalline Regions of Isotactic Polypropylene: Toward a Determination of Morphological Partitioning

January 1, 2000

Author(s)

David L. VanderHart, R G. Alamo, Marc R. Nyden, M S. Kim, L Mandelkern

Polymer-Surface Interactions in Nanofilled Polymers

January 1, 2000

Author(s)

Alamgir Karim, Jack F. Douglas

An understanding of the influence of polymer-surface interactions on the interfacial properties of nanoparticle fillers in polymer matrices is critical for...

Optical Properties of Materials: A Sampling of NIST Contributions

January 1, 2000

Author(s)

Thomas A. Germer, R Gupta, Leonard M. Hanssen, Eric L. Shirley

Optics has found an extremely wide range of applications in industry and science, and the properties of the materials that make up optical instruments are key...

Nucleation of Vortez Arrays in Rotating Anisotropic Bose-Einstein Condensates

January 1, 2000

Author(s)

D L. Feder, Charles W. Clark, B I. Schneider

The nucleation of vortices and the resulting structures of vortex arrays in dilute, trapped, zero-temperature Bose-Einstein condensates are investigated...

Rotational Signatures of Chemical Agents and Related Compounds

January 1, 2000

Author(s)

R D. Suenram, Angela R. Hight Walker, Gerald T. Fraser, David F. Plusquellic, R S. DaBell, Pamela M. Chu, George C. Rhoderick, A C. Samuels, J O. Jensen, Pavol Krivosik, J M. Lochner

The rotational spectra of more than twenty different chemical-warfare agents, precursors, and decomposition products have been studied using the technique of...

A Temporal Imaging and Microscopy of Atoms

January 1, 2000

Author(s)

Y B. Ovchinnikov

A way of temporal imaging of neutral atoms by means of pulsed gradient light potentials is considered. The possibility of producing 2D and 3D images of an...

Characterization of Materials Using an Ultraviolet Radiometric Beamline at SURF III

January 1, 2000

Author(s)

Ping-Shine Shaw, R Gupta, Thomas A. Germer, Uwe Arp, Thomas B. Lucatorto, Keith R. Lykke

The completion of the upgrade of the synchrotron facilities at the National Institute of Standards and Technology (NIST) has yielded a better-characterization...

The NIST Atomic Spectra Database

January 1, 2000

Author(s)

Wolfgang L. Wiese

A summary of the contents and features of the new NIST Atomic Spectra Database is presented. All material in this large database has been obtained from critical...

NIST-PTB Measurements of the Radiometric Temperatures of a High-Temperature Black Body Using Filter Radiometers

January 1, 2000

Author(s)

Howard W. Yoon, P Sperfeld, S Galal Yousef, J Metzdorf

The results of a bilateral intercomparison of radiometric temperatures of a high-temperature blackbody from 2100 K to 3100 K measured using filter radiometers...

Preparation and in vitro Studies of [¹²⁵-I]IUDR-T101 Antibody Conjugate

January 1, 2000

Author(s)

M C. Chakrabarti, C H. Paik, J A. Carrasquillo

Idoxuridine labeled with 125I was conjugated to polylysine. This conjugate was then coupled to the carbohydrate side chains of T101 monoclonal antibodiy (anti...

Kinetics and Products of Propargyl (C₃H₃) Radical Self-Reactions and Propargyl-Methyl Cross-Combination Reactions

January 1, 2000

Author(s)

Askar Fahr, A Nayak

Propargyl (HC=C-CH 2) and methyl radicals were produced through the 193 nm excimer laser photolysis of mixtures of C 3H 3Cl/He and CH 3N 2CH 3/He respectively...

Development of a Spectral Database for Testing Quantitataive Electron Probe Microanalysis of Rough, Bulk Samples

January 1, 2000

Author(s)

Dale E. Newbury

Surface roughness can substantially modify the generation and escape of x-rays from a target under electron bombardment. The ideal specimen for electron probe x...

Thermophysical Properties of Gaseous Tungsten Hexafluoride From Speed-of-Sound Measurements

January 1, 2000

Author(s)

John J. Hurly

The speed of sound was measured in gaseous WF 6 using a highly precise acoustic resonance technique. The data span the temperature range from 290 to 420 K and...

Ab Initio Structures of Metalloenzyme Active Sites: Applications to Metalloglutathione Transferase

January 1, 2000

Author(s)

Morris Krauss

A possible structure of the active site of a new metalloenzyme family, metalloglutathione transferase (MGT), is deduced from ab initio calculations suggested by...

Quantitative Electron Probe Microanalysis of Rough, Bulk Samples

January 1, 2000

Author(s)

Dale E. Newbury

Surface roughness degrades the accuracy of quantitative electron probe x-ray microanalysis through the action of geometric effects on x-ray production and...

Propargyl-Type Radicals as Precursors for Polychlorinated Aromatic Hydrocarbons During Incineration

January 1, 2000

Author(s)

Valeri I. Babushok, Wing Tsang, T Noto

A gas phase mechanism for the formation of polychlorinated benzene, in systems where chlorine concentration need not be high, is presented. The key features are...

Assignment of Enzyme Substrate Specificity by Principal Component Analysis of Aligned Protein Sequences: An Experimental Test Using DNA Glycosylase Homologues

January 1, 2000

Author(s)

A Gogos, D Jantz, K. J. Tuerk, D Richardson, M. Dizdaroglu, N D. Clarke

We have studied the relationship between amino acid sequence and substrate specificity in a DNA glycosylase family by characterizing experimentally the...

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