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Displaying 15651 - 15675 of 17286

BLCC-NIST Building Life-Cycle Cost Program, Version 5.0

October 1, 2000
Author(s)
S Fuller, A Boyles, Bruce R. Miller
The BLCC5 Building Life-Cycle Cost Program provides economic analysis of projects for which both initial capital costs and future operational costs need to be considered. The program is useful for evaluating the long-term costs and savings of energy and

1-cm Collimated Source for Use in Infrared Calibrations

July 1, 2000
Author(s)
Beverly Klemme, Timothy M. Jung, Adriaan C. Carter, Eric L. Shirley, Steven R. Lorentz, Raju V. Datla
A 1 cm collimated source has been developed and tested for calibration of detectors in the 2 m to 8 m range. This source will be used to calibrate the Transfer Radiometer (BXR) currently under development at NIST. Also, the results of the test of this

Selected Programs at the New SURF III Electron Storage Ring

June 1, 2000
Author(s)
Mitchell L. Furst, Uwe Arp, G P. Cauchon, A D. Hamilton, L R. Hughey, Thomas B. Lucatorto, Charles S. Tarrio
… electron storage ring at NIST (the National Institute of Standards and Technology) to SURF III (the Synchrotron …

Molecular Measuring Machine Design and Measurements

May 1, 2000
Author(s)
John A. Kramar, Jay S. Jun, William B. Penzes, Fredric Scire, E C. Teague, John S. Villarrubia
… We at the National Institute of Standards and Technology are building a metrology instrument …

Experimental Test of Blind Tip Reconstruction for Scanning Probe Microscopy

January 1, 2000
Author(s)
Samuel Dongmo, John S. Villarrubia, Samuel N. Jones, Thomas B. Renegar, Michael T. Postek, Jun-Feng Song
Determination of the tip geometry is a prerequisite to converting the scanning probe microscope (SPM) from a simple imaging instrument to a tool that can perform width measurements accurately. Recently we developed blind reconstruction, a method to

NIST Realization of the Gallium Triple Point

November 1, 1999
Author(s)
Gregory F. Strouse
The gallium trip point (302.9166 K) instead of the gallium melting point (302.9146 K) is used at NIST in the realization of the International Temperature Scale of 1990 (ITS-90). Four different sources of gallium with purities of at least 99.999 995% were

Advanced Fire Detection Using Multi-Signature Alarm Algorithms

March 16, 1999
Author(s)
D T. Gottuk, M J. Peatross, R J. Roby, C L. Beyler
The objective of this work was to assess the feasibility of reducing false alarms while increasing sensitivity through the use of combined conventional smoke detectors with carbon monoxide (CO) sensors. This was accomplished through an experimental program

A Problem in AC Quantized Hall Resistance Measurements and a Proposed Solution

November 1, 1998
Author(s)
Marvin E. Cage, Anne-Marie Jeffery
In all experiments reported to date the measurement values of the ac quantized Hall resistances R H varied with the applied current frequency, and differed significantly from the dc values of R H, making it difficult to use the ac quantum Hall effect as an

Systematic Errors in ab Initio Bond Dissociation Energies

August 1, 1998
Author(s)
Karl K. Irikura
Bond dissociation energies (D o) for 41 small molecules were calculated at 19 levels of ab initio theory up to CCSD(T)/cc-pVTZ, using geometries and vibrational zero-point energies from B3LYP/6-31G* hybrid density-functional calculations. Empirical

Determination of the Seebeck Coefficient of Thin-Film Thermocouples

May 1, 1998
Author(s)
Kenneth G. Kreider, Dean C. Ripple, D P. DeWitt
Thin-film thermocouples have been found useful in numerous applications ranging from thermal convertors, heat flux gages, and thermopiles to surface temperature sensors for turbine engine blades and diesel engine cylinders. Because of their small size
Displaying 15651 - 15675 of 17286
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