Výsledky vyhledávání

Dissertation/ Thesis

The measurement of the size and concentration of fine sand suspensions using scattered ultrasound

Autor: Lenn, C. P.

This work is concerned with the development of an instrument capable of measuring simultaneously both the size and concentration. of suspended fine sands in the presence of silt. A review of the literature of the measurement of suspended solids showe

Externí odkaz: http://dspace.lib.cranfield.ac.uk/handle/1826/10692

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Akademický článek

Orientation of crystallites in piezoelectric poly(vinylidene fluoride).

Autor: Kupferberg, Lenn C.

Publikováno v: Journal of Applied Physics; 9/1/1988, Vol. 64 Issue 5, p2316, 8p, 2 Diagrams, 4 Charts, 6 Graphs

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Densification of nano-yttria powders for IR window applications

Autor: Patrick K. Hogan, Thomas Y. Wong, Joseph M. Wahl, Charles B. Willingham, Alok M. De, Lenn C. Kupferberg

Publikováno v: Window and Dome Technologies VIII.

Commerically available yttrium oxide nanopowders were evaluated as starting materials for preparation of transparent materials. The objective is an yttria optical ceramic exhibiting approximately one micrometer grain size to provide increased strengt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c6dd9d14e3a4ebda6d15e4a1388d95f
https://doi.org/10.1117/12.500986

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Direct emissivity measurements of IR materials

Autor: Yanina Kisler, Gordon C. Mackenzie, Lenn C. Kupferberg, Chia Ming Chen

Publikováno v: SPIE Proceedings.

Emissivity measurements of ZnS, Sapphire, ALON, MgO, and Yttria were performed in 3.9-4.0 micrometers and 4.4-4.9 micrometers bands, for temperatures between 300 degrees C and 600 degrees C. The average radiance was measured over each waveband. Emiss

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec0206c2fce9aa0a359369b85be86cd3
https://doi.org/10.1117/12.354636

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