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Displaying 56751 - 56775 of 74616

Ultrasound Power Measurement Techniques at NIST

November 12, 1995
Author(s)
Steven E. Fick
Megahertz-frequency sound waves with submillimeter wavelengths are widely used to probe the interior regions of many types of structures. When human tissues are exposed to ultrasound for diagnostic or therapeutic purposes, the applied power levels must be

Blind Estimation of Tip Geometry from Noisy Images

November 2, 1995
Author(s)
John S. Villarrubia
Broadening of image features due to non-vanishing tip size is a well-known imaging artifact in scanned probe microscopy (SPM) topographs. This need not be a serious limitation for some types of metrology (e.g. pitch or height), but it is significant for

Agent Stability Under Storage (NIST SP 890)

November 1, 1995
Author(s)
Richard H. Harris Jr.
Significant losses in fire suppression effectiveness and increases in toxicity are possible if a fire extinguishing agent degrades during multi-year storage. Halon 1301 is known to be stable in metal containers for many years, and any trace degradation

Conclusion.

November 1, 1995
Author(s)
Richard G. Gann
This report presents the results of two years of research in support of the objective to identify and make ready for use the optimal near-term fluid to replace halon 1301 for in-flight fire suppression in aircraft engine nacelles and dry bays. At the time

Introductory Remarks (NISTIR 5766)

November 1, 1995
Author(s)
Jiann C. Yang
Objectives of the Workshop: (1) to identify what we know and don't know in gas generator technology for fire suppression; (2) to identify future research areas in gas generator technology for fire suppression; (3) to identify potential users and address
Displaying 56751 - 56775 of 74616
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