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Displaying 25426 - 25450 of 73697

United States Capitol Dome:Characterization of Cast and Wrought Materials

January 2, 2011
Author(s)
Christopher N. McCowan, Thomas A. Siewert, David Olson, Joseph D. McColskey
Restoration of the cast iron dome at the United States Capitol is needed because moisture is leaking into interior areas of the building due to corrosion damage. Microstructure, composition, and tensile properties of cast and wrought samples from the dome

A Compact Variable-Temperature Broadband Series-Resistor Calibration

January 1, 2011
Author(s)
Nathan D. Orloff, Jordi Mateu, Arkadiusz C. Lewandowski, Eduard Rocas, Joshua P. King, Dazhen Gu, Juan C. Collado Gomez, Ichiro Takeuchi, Xiaoli Lu, James C. Booth
We present a method to obtain a broadband on wafer calibration from 45 MHz to 40 GHz for variable temperature, which requires three standards: a thru-reflect, and series-resistor. The maximum error of this technique compared to a benchmark 9 standard

Analysis of high-Q, gallium nitride nanowire resonators in response to deposited thin films

January 1, 2011
Author(s)
J. R. Montague, M. Dalberth, J. M. Gray, D. Seghete, Kristine A. Bertness, S M. George, Victor M. Bright, Charles T. Rogers, Norman Sanford
Gallium nitride nanowires (GaN-NWs) are systems of interest for mechanical resonance-based sensors due to their small mass and, in the case of c-axis NWs, high mechanical quality (Q) factors of 10,000-100,000. We report on singly-clamped NW mechanical

Cold light from hot atoms

January 1, 2011
Author(s)
John J. Curry, G G. Lister
The introduction of rare earth atoms and molecules into lighting discharges led to great advances in efficacy of these lamps. Atoms such as Dy, Ho and Ce provide excellent radiation sources for lighting applications1, with strong radiation bands in the

Contributions of the EMERALD project to assessing and improving microarray data quality

January 1, 2011
Author(s)
Vidar Beisvag, Audrey Kauffmann, James Malone, Carole Foy, Marc L. Salit, Schimmel Heinz, Erik Bongcam-Rudloff, Ulf Landegren, Helen Parkinson, Wolfgang Huber, Alvis Brazma, Arne K. Sandvik, Martin Kuiper
While MIAME standards have helped to increase the value of microarray data deposited in public databases like ArrayExpress and GEO, limited means have been available to assess the quality of the data or to identify the procedures that were used to
Displaying 25426 - 25450 of 73697
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