Journal of Research of the National Institute of Standards and Technology articles from September 2002

Journal of Research of the National Institute of Standards and Technology archives from September 2002

Stability of standard electrolytic conductivity solutions in glass containers.
September 1, 2002... The stability of solutions having an electrolytic conductivity, [kappa], of 5 [mu]S/cm to 100 000 [mu]S/cm packaged in glass screw-cap bottles, glass serum bottles, and glass ampoules was monitored for 1 year to 2 years. The conductivity was...

Self-similarity simplification approaches for the modeling and analysis of rockwell hardness indentation.
September 1, 2002... The indentation process of pressing a Rockwell diamond indenter into inelastic material has been studied to provide a means for the analysis, simulation and prediction of Rockwell hardness tests. The geometrical characteristics of the...

Three improvements in reduction and computation of elliptic integrals.
September 1, 2002... Three improvements in reduction and computation of elliptic integrals are made, 1. Reduction formulas, used to express many elliptic integrals in terms of a few standard integrals, are simplified by modifying the definition of intermediate...

Influence of the vertical emittance on the calculability of the Synchrotron Ultraviolet Radiation Facility.
September 1, 2002... A method to include the influence of the vertical electron beam emittance onto the calculability of synchrotron radiation is introduced. It accounts for the finite vertical size and angular spread of the electron beam through a convolution...

Lattice matching (LM)--prevention of inadvertent duplicate publications of crystal structures.
September 1, 2002... Lattice-matching techniques have proved to be extremely effective for the identification of unknown crystalline materials. A commonly employed lattice-matching strategy is based on matching the reduced cell of an unknown against a database of...

Noise-parameter uncertainties: a Monte Carlo simulation.
September 1, 2002... This paper reports the formulation and results of a Monte Carlo study of uncertainties in noise-parameter measurements. The simulator permits the computation of the dependence of the uncertainty in the noise parameters on uncertainties in the...

Transient Green's tensor for a layered solid half-space with different interface conditions.
September 1, 2002... Pulsed ultrasonic techniques can be and have been used to examine the interface conditions of a bonded structure. To provide a theoretical basis for such testing techniques we model the structure as a layer on top of a half-space, both of...

Standard fire service interface and incident management information system demonstrated. (General Developments).
September 1, 2002... On April 3, NIST demonstrated the use of a new technology for fire alarm panels in an actual fire incident with the help of the NIST Fire Department. A multi-room test structure was constructed inside the Large Fire Laboratory for a series of...

Effect of postal irradiation on DNA forensics. (General Developments).
September 1, 2002... NIST has demonstrated that the high doses of radiation used on postal mail to kill anthrax (and other pathogens) does not interfere with standard DNA profiling tests that might be used to gather forensic evidence from letter pieces. NIST...

NIST airflow model featured in industry smoke control guidance. (General Developments).
September 1, 2002... CONTAM, the airflow and contaminant transport model developed by NIST for airborne movement in buildings, has now been noted as the tool of choice for designing and analyzing smoke management systems. The American Society of Heating,...

NIST researchers characterize high-speed photoreceiver to 110 GHz. (General Developments).(Brief Article)
September 1, 2002... NIST researchers have demonstrated that they can accurately characterize the modulation response (magnitude and phase) of a commercially available photoreceiver to frequencies as high as 110 GHz, nearly three times the bit rate of emerging 40...

NIST uncovers clue to successful manipulation of paired electrons. (General Developments).
September 1, 2002... Nanoscale devices that manipulate single electrons of charge e with metrological accuracy are being used at NIST to develop new fundamental electrical standards, such as a capacitance standard based on counting electrons. The superconducting...

Properties and applications of carbon nanotubes explored. (General Developments).
September 1, 2002... Researchers at NIST are using carbon nanotubes for a variety of new experiments. Carbon nanotubes recently were discovered in the byproducts of carbon fullerene (Bucky balls) production. Nanotubes can range from a few to hundreds of nanometers...

Molecular spectra databases now available online. (General Developments).
September 1, 2002... NIST has made available on the Web three linked databases of the microwave and RF spectra of diatomic, triatomic, and hydrocarbon molecules. Originally published as spectral tables in the Journal of Physical and Chemical Reference Data, the...

International search and rescue robots compete in NIST-designed reference test arenas. (General Developments).
September 1, 2002... The RoboCupRescue League hosted its first annual competition in Fukuoka, Japan, June 20-23, 2002, using Japanese versions of NIST's "Reference Test Arenas for Autonomous Mobile Robots" that they built and installed at Fukuoka Dome Stadium. This...

NIST works with small businesses to protect information assets. (General Developments).
September 1, 2002... On July 11, 2002, NIST in co-sponsorship with the U.S. Small Business Administration and the National Infrastructure Protection Center, delivered the first of three workshops planned for this quarter focused on small business information...

Army Corps of Engineers honors NIST participants in the Pentagon rebuilding effort. (General Developments).
September 1, 2002... Following the terrorist incidents of Sept. 11, 2001, the Army Corps of Engineers organized a group to advise the Pentagon renovation construction effort to ensure that best practices were followed during rehabilitation of the Pentagon in order...

Buyers guide features NIST Data product. (General Developments).
September 1, 2002... The lead article in the annual Buyer's Guide of the American Institute of Physics features five pages of values of the fundamental physical constants, such as the speed of light, the Newtonian constant of gravitation, the Planck constant, the...

Fault detection and diagnostic tools. (General Developments).
September 1, 2002... NIST has developed two fault detection and diagnostic tools to assist operators in monitoring the performance of Heating, Ventilating, and Air Conditioning systems: Air Handling Unit Performance Assessment Rules (APAR) and Variable Air Volume...

International Comparison of Guarded Hot Plate laboratories. (General Developments).
September 1, 2002... NIST has published Technical Note 1444, International Comparison of Guarded Hot Plate Apparatus Using National and Regional Reference Materials, culminating a 5 year effort to compare measurement results from five national metrology...

Nist publishes online e-handbook of statistical methods. (General Developments).
September 1, 2002... NIST teamed up with International SEMATECH and a consortium of worldwide major semiconductor companies to produce the NIST/Sematech e-Handbook of Statistical Methods. The e-handbook expands and updates Handbook 91, Experimental Statistics,...

Nist researchers complete uncertainty analysis for linking ECCS to SI farad. (General Developments).(Electron-Counting Capacitance Standard)
September 1, 2002... NIST researchers have completed an uncertainty analysis for the comparison of a cryogenic vacuum-gap capacitor against the NIST calculable capacitor. This work is a critical step in the development of the Electron-Counting Capacitance Standard...

2002 Update of Mass Spectral Library released. (General Developments).
September 1, 2002... A major update to the NIST Mass Spectral Library was released in July. Four years of painstaking work has led to significant enhancements in the coverage and quality of this widely used reference collection. Originating from a number of...

Production complete for new protein Data Bank CD-Rom sets. (General Developments).(Brief Article)
September 1, 2002... NIST has completed production of a new Protein Data Bank (PDB) CD-ROM set of the macromolecular structures of proteins and nucleic acids and the corresponding experimental data. This set, Issue 101, contains 18 528 structures in gzip format and...

Polaron glass in colossal magnetoresistive oxides researched. (General Developments).
September 1, 2002... The magnetic properties of the lanthanum manganese oxide class of materials have attracted tremendous interest recently because of the dramatic increase in conductivity these systems exhibit when the magnetic moments order ferromagnetically,...

NIST publishes guidance on securing interconnecting IT systems. (General Developments).
September 1, 2002... NIST Special Publication 800-47, Security Guide for Interconnecting Information Technology Systems has recently been issued. The document provides guidance for planning, establishing, maintaining, and terminating interconnections between...

New x-ray wavelength reference table to be published. (General Developments).
September 1, 2002... In January 1967, an x-ray wavelength table was published in Reviews of Modern Physics by the late J. A. Bearden (The Johns Hopkins University). For the past 35 years, it has been a standard reference in the field, reprinted in a number of...

NIST announces standard reference material (SRM) 2017 for the paint industry. (Standard Reference Materials).(Brief Article)
September 1, 2002... NIST has developed SRM 2017 to aid the many industries dependent on gonioapparent (special visual effect) paints and coatings to improve the appearance of their products. Examples of gonioapparent paints include the pearlescent and metal-flake...