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Journals

The Three Components of Reflection

October 1, 1998

Author(s)

Edward F. Kelley, George R. Jones Jr., Thomas Germer

The FERET Verification Testing Protocol for Face Recognition Algorithms

October 1, 1998

Author(s)

S A. Rizvi, P. Jonathon Phillips, H Moon

Two critical performance characterizations of biometric algorithms, including face recogntion, are identification and verification. In face recognition, FERET...

The Surface Area of Cement Paste as Measured by Neutron Scattering -- Evidence for Two C-S-H Morphologies

October 1, 1998

Author(s)

J Thomas, Hamlin M. Jennings, Andrew J. Allen

Small-angle neutron scattering was used to measure the effect of water-to-cement ratio [w/c] and cement batch variation on the surface area of ordinary Portland...

Effect of Hydrogen on Pb(Zr,Ti)O₃-Based Ferroelectric Capacitors

October 1, 1998

Author(s)

S R. Perusse, C W. Tipton, H D. Drew, T Venkatesan, R Ramesh, D B. Romero, V B. Podobedov, A Weber

The properties of ferroelectric films are known to degrade when subjected to hydrogen in forming gas anneals. Earlier studies have attributed this degradation...

Investigations of Nonlinear Femtosecond Pulse Propagation with the Inclusion of Raman, Shock, and Third-Order Phase Effects

October 1, 1998

Author(s)

A A. Zozulya, Scott Diddams, Tracy S. Clement

The propagation of intense femtosecond pulses in a nonlinear, dispersive bulk medium investigated numerically in the regime where the combined effects of...

Crossover Approach to Scaling Behavior in Dilute Polymer Solutions Theory and Simulation

October 1, 1998

Author(s)

L L. Lue, S B. Kiselev

We develop a crossover theory for dilute polymer solutions, analogous to crossover theories for critical phenomena in simple fluids.

Lessons Learned Developing Protocols for the Industrial Virtual Enterprise

October 1, 1998

Author(s)

Martin Hardwick, KC Morris, D L. Spooner, T Rando, Peter O. Denno

The National Industrial Infrastructure Protocols (NIIIP) Consortium formed in 1994 to develop protocols to allow for manufacturers and their suppliers to...

National Institute of Standards and Technology - Texas Instruments Industrial Collaboratory Testbed

October 1, 1998

Author(s)

Michael T. Postek, Marylyn H. Bennett, N J. Zaluzec, Thomas E. Wheatley, Samuel N. Jones

A portion of the mission of the NIST Manufacturing Engineering Laboratory (MEL) is to improve and advance length metrology in aid of U.S. Industry. This...

Investigations of Nonlinear Femtosecond Pulse Propagation with the Inclusion of Raman, Shock and Third Order Phase Effects

October 1, 1998

Author(s)

A. A. Zozulya, Scott Diddams, Tracy S. Clement

Thermal Characterization of a Cryogenic Radiometer and Comparison with a Laser Calorimeter

October 1, 1998

Author(s)

David J. Livigni, Christopher L. Cromer, Thomas Scott, T J. Johnson, Nien F. Zhang

Maximum Entropy Methods for Graph-Valued Random Objects

September 30, 1998

Author(s)

D L. Banks

Many problems entail the analysis of data that are independent and identically distributed random objects, such as graphs, sequences, partitions, and...

Using Self-Assembly to Control the Structure of DNA Monolayers on Gold: A Neutron Reflectivity Study

September 30, 1998

Author(s)

R Levicky, T M. Herne, Michael J. Tarlov, Sushil K. Satija

Neutron reflectivity was used to determine the concentration profiles of oligomeric DNA monolayers on gold in the high salt (1M NaCl). These monolayers are of...

Mechanical Properties of Si₀₂ and Si₃N₄ Coatings: A BAM/NIST Cooperative Project

September 24, 1998

Author(s)

U Beck, Douglas T. Smith, G Reiners, S J. Dapkunas

Mechanical properties, i.e., hardness and elastic modulus, of amorphous Si 02 and Si 3N^4^ PE-CVD coatings have been studied for two coating thicknesses (0.1 υm...

Ultraviolet Absorption Spectrum and Cross Sections of Vinyl [C₂H₃] Radical in the 225-238 nm Region

September 15, 1998

Author(s)

Askar Fahr, P Hassanzadeh, D B. Atkinson

The room temperature gas phase ultraviolet absorption spectrum and cross sections of vinyl [C 2H 3] radicals have been determined in the spectral range 225 nm...

Critical Viscosity of the Ionic Mixture Triethyl n-Hexyl Ammonium Triethyl n-Hexyl borate in Diphenyl Ether

September 15, 1998

Author(s)

S. Wiegand, Robert F. Berg, Johanna M.H. Levelt-Sengers

The Growth Kinetics of Nanocrystalline ZnO Colloidal Solutions

September 11, 1998

Author(s)

E M. Wong, John E. Bonevich, P C. Searson

Colloidal chemistry techniques were used to synthesize ZnO particles in the nanometer size regime. Although the synthesis and unique properties of these...

Binding and Electron Transfer Between Putidaredoxin and Cytochrome P450cam (CYP101). Theory and Experiments

September 9, 1998

Author(s)

A. E. Roitberg, Marcia J. Holden, M P. Mayhew, I V. Kurnikov, D N. Beratan, V L. Vilker

A necessary step in understanding biological function in multiple metalloprotein redox systems is the description of protein-protein binding and electron...

Molar Heat Capacity at Constant Volume of 1,1-Difluoroethane (R152a) and 1,1,1-Trifluoroethane (R143a) from the Triple-Point Temperature to 345 K at Pressures to 35 Mpa

September 1, 1998

Author(s)

Joe W. Magee

Molar heat capacities at constant volume (C v) of 1,1-difluoroethane (R152a) and 1,1,1-trifluoromethane (R143a) were measured with an adiabatic calorimeter...

Doping Effects and Reversibility Studies on Gas-Exposed (Alpha)-Sexithiophene Thin Films

September 1, 1998

Author(s)

C Kendrick, Stephen Semancik

The electronic effects produced by controlled gas exposures on [alpha]-sexithiophene thin films have been investigated using x-ray photoelectron spectroscopy...

Interleave in Peace, or Interleave in Pieces

September 1, 1998

Author(s)

Isabel M. Beichl, F Sullivan

Bit interleaving is a technique that sometimes can collapse a problem of high-dimensional data to one of lower dimensional data. Our favorite use is going from...

Crystal Structure of Strontium Potassium Arsenate Octahydrate

September 1, 1998

Author(s)

M Mathew

The crystal structure of strontium potassium arsenate octahydrate, SrKAsO 4.8H 2O, has been determined by single crystal x-ray diffraction. The crystals are...

A Strain-Based Methodology for High Temperature Lifetime Prediction

September 1, 1998

Author(s)

Sheldon M. Wiederhorn, William E. Luecke, Ralph Krause

In structural materials, lifetime is often strain-determined. Once a part exceeds its allowable strain, its functional integrity is lost. Although most ceramics...

Mechanical Hardness: Atomic-Level Calculations for Diamond-Like Materials

September 1, 1998

Author(s)

D G. Clerc

Calculations of atomic-level mechanical hardness are reported for fice diamond-like materials: diamond, silica, β-silicon-carbide, β-boron-nitride, and boron...

Visualization of Dendrimer Molecules by Transmission Electron Microscopy (TEM): Staining Methods and Cryo-TEM of Vitrified Solutions

September 1, 1998

Author(s)

C L. Jackson, H D. Chanzy, F P. Booy, B Drake, D A. Tomalia, Barry J. Bauer, Eric J. Amis

Images of individual dendrimer molecules of poly(amidoamine) (PAMAM) from generation 10 (G10) to G5 were imaged by conventional transmission electron microscopy...

Multiple Small-Angle Neutron Scattering

September 1, 1998

Author(s)

Gabrielle G. Long, Susan Krueger, Andrew J. Allen

Over the past decade, a multiple small-angle neutron scattering (MSANS) formalism has been developed to enable researchers to derive microstructural parameters...

Masked Ion Beam Lithography with Highly Charged Ions

September 1, 1998

Author(s)

John D. Gillaspy, D Parks, L P. Ratliff

Masked ion beam lithography using highly charged ions is demonstrated for the first time by producing an array of hundreds of ordered micrometer wide dots using...

Absolute Refractive Indices and Thermal Coefficients of Fused Silica and Calcium Fluoride Near 193 nm

September 1, 1998

Author(s)

John H. Burnett, Ulf Griesmann, M Walhout, J L. Dehmer, J R. Roberts, R Gupta

The refractive indices of several fused silica and calcium fluoride samples from different suppliers were measured with the minimum deviation method in the deep...

Isochoric p-ρ-p-T measurements on 1, 1-Difluoroethane (R152a) form 158 K to 400 K and 1,1,1-trifluoroethane (R143a) form 166 K to 400 K at pressures to 35 Mpa

September 1, 1998

Author(s)

Joe W. Magee

The p-p-T realtionships were measured for difluoromethane (R152a) and 1,1,1-trifluorethane (R143a) by an isochoric method with gravimetric determinations of the...

Acetylacetonate (acac) Anion in the Gas Phase: Predicted Vibrational Spectra and Photodetachment Energies

September 1, 1998

Author(s)

Karl K. Irikura

The geometry and vibrational spectrum of the gas-phase acetylacetonate anion [acac-; (CH 3CO) 2CH -] are predicted using ab initio molecular orbital theory. At...

Update on the Activities of the National Cooperation for Laboratory Accreditation

September 1, 1998

Author(s)

Belinda L. Collins

The efforts to form a laboratory accreditation cooperation in the United States and North America are described, including activities by the Laboratory...

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