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Displaying 48876 - 48900 of 73970

Ladars for Construction Assessment and Update

January 1, 2000
Author(s)
Geraldine S. Cheok, William C. Stone, Robert R. Lipman, Christoph J. Witzgall
Work at the National Institute of Standards and Technology (NIST) on laser radar imaging of a construction site is described. The objective of the NIST research is to make measurements required in a construction project quicker and cheaper than current

Layer Perfection in Ultrathin InAS Quantum Wells in GaAs(001)

January 1, 2000
Author(s)
J A. Gupta, S P. Watkins, E D. Crozier, Joseph Woicik, D A. Harrison, D Jiang, I J. Pickering, B A. Karlin
X-ray diffraction (XRD), X-ray standing wave (XSW) and X-ray absorption fine structure (XAFS) measurements were used to assess the layer perfection and positions of 1 and 2 monolayer (ML) InAs quantum wells buried in GaAs(001). Photoluminescence (PL)

Load History Dependence of Fracture in Rubber-Toughened Epoxies

January 1, 2000
Author(s)
Donald L. Hunston, J He, R Raghavan, D Hoffman
It is well know that the most common toughening mechanisms in structural adhesives are viscoelastic processes so the fracture energies for bulk adhesive specimens and bonded joints vary with loading history. The work here examines this effect by measuring

Magnetic Trapping of Neutrons

January 1, 2000
Author(s)
P R. Huffman, C R. Brome, J S. Butterworth, K Coakley, Maynard S. Dewey, S N. Dzhosyuk, R G. Golub, G L. Greene, K Habicht, Steve K. Lamoreaux, C E. Mattoni, D N. McKinsey, Fred E. Wietfeldt, John M. Doyle

Matrix Clusters and Polymer-Matrix Adducts in the MALDI Analysis of Polystyrene

January 1, 2000
Author(s)
R J. Goldschmidt, Charles M. Guttman
The formation of matrix cluster ions and of polymer-matrix adduct ions in the matrix-assisted laser desorption/ionization (MALDI) analysis of polystyrene was investigated using layered sample preparations. It has been shown by post-source decay (PSD)
Displaying 48876 - 48900 of 73970
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