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Journals

Ab Initio Determination of the Structure of the Active Site of a Metalloenzyme: Metal Substitution in Phospotriesterase using Density Functional Methods

February 1, 1999

Author(s)

S A. Kafafi, Morris Krauss

A number of previous studies have determined that a metalloenzyme active site is inherently determined by the ligands and metal and only weakly perturbed by the...

Low Energy, Ion-Induced Electron and Ion Emission from Stainless Steel: The Effect of Oxygen Coverage and the Implications for Discharge Modeling

February 1, 1999

Author(s)

S. G. Walton, J. C. Tucek, R. Champion, Yicheng Wang

Absolute yields of electrons and negative ions resulting from positive ions impacting stainless steel have been determined as a function of impact energy for...

Experimental Study of the NaK (3 1PI) State

February 1, 1999

Author(s)

E Laub, J Huennekens, R K. Namiotka, Zeina J. Kubarych, I Prodan, J La civita, S Webb, I Mazsa

We report the results of an optical-optical double resonance experiment to determine the NaK (3 1PI) state potential energy curve. In the first step, a narrow...

Preparing Spectral Libraries of Chloroplast Components for a Raman Imaging and Microspectroscopy Study

January 30, 1999

Author(s)

B M. Allen, Anne L. Plant, E N. Lewis, P Colarusso

Raman imaging is a non-invasive vibrational spectroscopic technique that utilizes both Raman spectroscopy and optical microscopy. This technique allows one to...

Wear Induced Molecular Orientation in Ultra High Molecular Weight Polyethylene (UHMWPE) Measured by Soft X-Ray Adsorption

January 29, 1999

Author(s)

Daniel A. Fischer, S Sambasivan, M C. Shen, Stephen M. Hsu

Molecular orientation in ultra high molecular weight polyethylene (UHMWPE) when it is subjected to wear is important in understanding the basic wear processes...

The Use of Cyclic Phosphazene Additives to Enhance the Performance of the Head/Disk Interface

January 29, 1999

Author(s)

H J. Kang, Q Zhao, F E. Talke, D J. Perettie, B M. DeKoven, T A. Morgan, Daniel A. Fischer, Stephen M. Hsu, C S. Bhatia

Phase separation of phosphazene additives in perfluoropolyalkylether (PFPAE) lubricants is investigated as a function of additive concentration and lubricant...

The Strength of Solvent-Exposed Salt Bridges

January 28, 1999

Author(s)

R Luo, L David, H Hung, J Devaney, M K. Gilson

Effects of Wear Motion on Ultra High Molecular Weight Polyethylene (HMWPE) Molecular Orientation

January 28, 1999

Author(s)

S Sambasivan, Daniel A. Fischer, M C. Shen, Stephen M. Hsu

In a human hip joint, the motion is complex and consists of flexion/extension, abduction, and adduction. Laboratory studies have shown that these motions...

User Evaluation of Automatically Generated Semantic Hypertext Links in a Heavily Used Precedural Manual

January 18, 1999

Author(s)

John M. Tebbutt

This paper is an interim report on our efforts at NIST to construct an information discovery tool through the fusion of Hypertext and Information Retrieval (IR)...

Simple Empirical Cluster Expansion Hamiltonians for Modeling Cation Order-Disorder in A(B'^d1/3B2/3)O3 Perovskites Such as Pb(Mg1/3Nb2/3)O3

January 15, 1999

Author(s)

Benjamin P. Burton

Brute force exploration of the simple cubic effective cluster interaction space indicates that linear triplet interaction is both necessary and sufficient to...

Logarithmic Convexity and the 'Slow Evolution' Constraint in Ill-Posed Initial Value Problems

January 15, 1999

Author(s)

Alfred S. Carasso

This paper examines a wide class of ill-posed initial value problems for partial differential equations, and surveys logarithmic convexity results leading to...

On The Reversion of an Asymptotic Expansion and the Zeros of the Airy Functions

January 15, 1999

Author(s)

Bruce R. Fabijonas, Frank W. Olver

The general theories of the derivation of inverses of functions from their power series and asymptotic expansions are discussed and compared. The asymptotic...

On the Distribution of the Limit of Products of I.I.D 2 x 2 Random Stochastic Matrices

January 15, 1999

Author(s)

A Mukherjea, Anastase Nakassis, J S. Ratti

This article extends the results of [3] by establishing sufficient conditions for the limit distribution of products of i.i.d. 2 x 2 random stochastic matrices...

The NIST Display Interface Testbed: The Development of a Centrally Controlled Testing System for the Automated Generation of Stimuli and Control Feedback

January 12, 1999

Author(s)

John W. Roberts, J A. Ward

Impressive advances are being made in the field of display metrology, as illustrated in standards such as the Video Electronics Standards Association's Flat...

Effect of Film Composition on the Orientation of (Ba,Sr)TiO₃ Grains in (Ba,Sr)_yTiO_2+y Thin Films

January 12, 1999

Author(s)

Debra L. Kaiser, Mark D. Vaudin, L D. Rotter, John E. Bonevich, J T. Armstrong

(Ba,Sr) yTiO 2+y thin films with 0.34 {1-xSr xTiO 3 (x {aproximately equal to} 0.06) and an amorphous phase. The orientation of the tetragonal Ba 1-xSr xTiO 3...

Electronic Structure and Spectra of Oxovanadium Silicate

January 11, 1999

Author(s)

Morris Krauss

The electronic structure and spectroscopy of the oxovanadium catalytic center on a silica surface is modeled with the molecule OV(OSIH 3)3. Excited electronic...

Standards for the rapid prototyping industry

January 4, 1999

Author(s)

Kevin K. Jurrens

This paper proposes that development of formalized standards for the rapid prototyping (RP) industry will help enable the continued growth and further...

Application of Neutron Interferometry to the Measurement of Thin Film Density

January 1, 1999

Author(s)

William E. Wallace, David L. Jacobson, Muhammad Arif, A I. Ioffe

The application of neutron interferometry to the measurement of the atom density of polymer thin films (

Ceramic Whisker Reinforcement of Dental Resin Composites

January 1, 1999

Author(s)

H H. Xu, T A. Martin, Joseph M. Antonucci, F Eichmiller

Chris Ernie Earl Kuyatt - Obituary

January 1, 1999

Author(s)

Robert Celotta, John William Gadzuk, Cedric J. Powell

Magnetic Reversal on Vicinal Surfaces

January 1, 1999

Author(s)

R Hyman, A Zangwill, Mark Stiles

We present a theoretical study of in-plane magnetization reversal for vicinal ultrathin films using a one-dimensional micromagnetic model with nearest-neighbor...