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NIST Authors in Bold

Displaying 50276 - 50300 of 73697

The New NIST Atomic Spectra Database (1999)

March 1, 1999
Author(s)
Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, J Sugar, Jeffrey R. Fuhr, Karen J. Olsen, Arlene Musgrove, Peter J. Mohr, Joseph Reader, G R. Dalton
The new NIST Atomic Spectra Database (ASD) interactive Web site is accessible via: http://atm.nist.gov/asd. The new version covers a much wider range of atomic and ionic transitions and energy levels than earlier versions, and all data are integrated. ASD

The NIST Design Repository Project

March 1, 1999
Author(s)
Simon Szykman, Ram D. Sriram, Christophe Bochenek, J Racz
Modern engineering industry is relying more and more on the use of knowledge in product development. This paper advocates design repositories as a natural progression from traditional design databases to systems that are created to more actively support

The NIST Watt Balance: Recent Results and Future Plans

March 1, 1999
Author(s)
David B. Newell, Richard L. Steiner, Edwin R. Williams
The last remaining SI base unit defined by an artifact is the kilogram. The NIST watt balance has been designed to measure the ratio of mechanical to electrical power, linking the artifact kilogram, the meter, and the second to the practical realizations

Theory for Ionization of Molecules by Electrons

March 1, 1999
Author(s)
Yong Sik Kim, M E. Rudd
A simple yet effective theory for the total ionization cross sections of molecules by electron impact is described. The theory, called the Binary Encounter Bethe [BEB] model, combines a modified form of the Mott cross section for low incident energies T

Ultrafast Glimpses at Water and Ice

March 1, 1999
Author(s)
Edwin J. Heilweil
Recent literature reports of transient infrared hole-burning and spectroscopic measurements on water and ice are critically reviewed. Dynamical measurements on the femtosecond and picosecond timescales show anomalous vibrational relaxation temperature

VAMAS Technical Working Area #3

March 1, 1999
Author(s)
George D. Quinn, E F. Begley
Technical Working Area #3, Ceramics of the Versailles Advanced Materials and Standards (VAMAS) project has conducted 12 projects and 12,000 experiments over 12 years. This website explains TWA3, and lists the key accomplishments and publications from the

Visualization of Bose-Einstein Condensates

March 1, 1999
Author(s)
Peter M. Ketcham, D L. Feder, W P. Reinhardt, Charles W. Clark, William L. George
A Bose-Einstein condensate (BEC) is a state of matter that exists at extremely low temperatures.BECs are currently under investigation through both numerical simulation and laboratory experiments.The visualization of data generated by numerical simulation

Design of a Digital Mathematical Library for Science, Technology and Education

February 26, 1999
Author(s)
Daniel W. Lozier, Bruce R. Miller, Bonita V. Saunders
The concept of a digital library is of proven worth because of its ability to provide dramatic capabilities that are impossible with traditional print media. We are interested in providing such capabilities for scientific, technical and educational users

Numerical Simulation of Sprinkler Performance

February 24, 1999
Author(s)
Kevin B. McGrattan, Glenn P. Forney
Rapidly, changing building designs, uses, materials, contents, fire protection and the general intermix of industrial/commercial and residential occupancies has created a need to understand the potential hazards and losses from fires and performance of

Barium Hollandite-Type Compounds Ba x Fe 2x Ti 8-2x O 16 with x= 1.143 and 1.333

February 23, 1999
Author(s)
J. M. Loezos, Terrell A. Vanderah, A R. Drews
Experimental X-ray powder diffraction patterns and refined unit cell parameters for two barium hollandite-type compounds. Ba xFe 2xTi 8-2xO 16, with x = 1.143 and 1.333, are reported here. Compared to the tetragonal parent structure, both compounds exhibit

Evaluation of Passenger Train Car Materials in the Cone Calorimeter

February 23, 1999
Author(s)
Richard D. Peacock, Richard W. Bukowski, S. H. Markos
Recent advances in fire test methods and hazard analysis techniques make it useful to re-examine passenger train fire safety requirements. The use of test methods based on heat release rate (HRR), incorporated with fire modeling and hazard analysis, could

Evaluation of Passenger Train Car Materials in the Cone Calorimeter

February 23, 1999
Author(s)
Richard D. Peacock, Richard W. Bukowski, S. H. Markos
Recent advances in fire test methods and hazard analysis techniques make it useful to re-examine passenger train fire safety requirements. The use of test methods based on heat release rate (HRR), incorporated with fire modeling and hazard analysis, could

Nanofabrication via Atom Optics

February 23, 1999
Author(s)
C Bradley, W Anderson, Jabez J. McClelland, Robert Celotta
Owing to the continuing reduction in the scale of microelectronic and micromagnetic technology, new microfabrication methods are constantly being explored. This is particularly true in the case of nanostructure fabrication. Here, the phenomenon of optical

Stripline Resonator for Electromagnetic Measurements of Materials

February 23, 1999
Author(s)
Chriss A. Jones, Y. Kantor, John H. Grosvenor Jr, Michael D. Janezic
A stripline resonator was used to measure the relative dielectric and magnetic properties of materials in the frequency range from 150 MHz to 2 GHz. Measurement accuracy relates strongly to the dimensions of the resonator. Consequently, equations used in
Displaying 50276 - 50300 of 73697
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