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Journals

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

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

Trace Element Detection at Nanometer Scale Spatial Resolution

September 1, 1998

Author(s)

Dale E. Newbury

Trace elemental constituents present in materials at concentration levels below 0.01 mass fraction can exert significant control on important electronic

Electroacoustic Analysis in Processing of Advanced Ceramics

September 1, 1998

Author(s)

Vincent A. Hackley, U Paik

Finely dispersed systems such as emulsions and colloidal suspensions are recognized as playing a critical role in many important industrial processes. Many of

Isopiestic Investigation of the Osmotic and Activity Coefficients of Aqueous MgSO₄ and the Solubility of MgSO₄X7H₂O(cr) at 298.15K: Thermodynamic Properties of the MgSO₄ + H₂O System

September 1, 1998

Author(s)

Donald G. Archer, J A. Rard

Isopiestic determinations of the osmotic coefficient of MgSO 4(aq) against NaCl(aq) and Kcl(aq) reference standards were performed with long equilibration times

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

Thermodynamics of the Lipase Catalyzed Esterification of 1-Dodecanoic Acid and 1-Dodecanol in Organic Solvents

September 1, 1998

Author(s)

Yadu D. Tewari

Lipase immobilized on controlled-pore glass beads was used to catalyze the esterification of 1-dodecanol and 1-dodecanoic acid in organic solvents. Equilibrium

Scaling the Near-Field Centerline Mixing Behavior of Axisymmetric Turbulent Jets

September 1, 1998

Author(s)

G Papadopoulos, William M. Pitts

Detailed measurements of the centerline mixing behavior in the near field of varible-density jets were performed. Real-time measurements of jet fluid

Effect of Heating Rate and Grain Size on the Melting Behavior of the Alloy Nb-47 Mass% Ti in Pulse-Heating Experiments

September 1, 1998

Author(s)

D Basak, William J. Boettinger, Daniel Josell, Sam R. Coriell, J L. McClure, Sitaraman Krishnan, A Cezairliyan

The effect of heating rate and grain size on the melting behavior of Nb-47 mass % Ti is measured and modeled. The experimental method uses rapid resistive self

Electrodeposition of Copper and Copper-Aluminum Alloys From a Room-Temperature Chloroaluminate Molten Salt

September 1, 1998

Author(s)

B J. Tierney, W R. Pitner, J A. Mitchell, C L. Hussey, Gery R. Stafford

The electrodeposition of copper and copper-aluminum alloys was investigated in the Lewis acidic aluminum chloride-1-methyl-3-ethylimidazolium chloride [60.0-40

An Accurate Measurement of the Planck Constant

September 1, 1998

Author(s)

Edwin R. Williams, Richard L. Steiner, David B. Newell

Simulations of the Thermal Conductivity in the Vicinity of the Critical Point

September 1, 1998

Author(s)

D J. Searles, D J. Evans, Howard J. Hanley, S Murad

Isothermal-isobaric nonequilibrium molecular dynamics and Green-Kubo simulations are developed and used to calculate the thermal conductivity of an 864 particle

Parametric Analysis of the Propagation of Uncertainties in Sorption Measurements Made with a Pressure-Decay Apparatus

September 1, 1998

Author(s)

J Tighe, J J. Pellegrino

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