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Displaying 44326 - 44350 of 73929

Non-Cavitational Tensile Creep in Lu-Doped Silicon Nitride

January 1, 2002
Author(s)
F Lofaj, Sheldon M. Wiederhorn, Gabrielle G. Long, B Hockey, P R. Jemian, L Browder, April Andreas
The tensile creep behavior of a Lu-based silicon nitride, SN 281, was studied in the temperature range 1400 C to 1550 C with test periods of up to 10 000 h. Strain rates were 3 to 5 orders of magnitude less than those for Yb-based grades of silicon nitride

Nonresonant Control of Multimode Molecular Wave Packets at Room Temperature

January 1, 2002
Author(s)
R A. Bartels, T C. Weinacht, S R. Leone, H C. Kapteyn, M M. Murnane
We demonstrate the creation and measurement of shaped multimode vibrational wave packets in CCl 4 for the first time. Impulsive Raman excitation of wave packets allows coherent control techniques to be applied to molecules without passing through an

On the Mitigation of Early Age Cracking

January 1, 2002
Author(s)
Dale P. Bentz, M R. Geiker, O M. Jensen
Potential means of limiting early age cracking ofconcrete structures have been investigated. Threedifferent methods of mitigating autogenous strainsand stresses in cement mortars (w/s=0.35, 8 % silica fume) are compared: 1.) reduction of thesurface tension

Optical Fiber Current and Voltage Sensors for the Electric Power Industry

January 1, 2002
Author(s)
Allen Rose, Gordon W. Day
The research and development of fiber current and voltage sensing for the power utilities is reviewed. A brief history of the work on these sensors and a description of the physical effects used is also given. The chapter is divided into polarimetric and

Optical Frequency Standards and Measurements

January 1, 2002
Author(s)
Leo W. Hollberg, Christopher W. Oates, E A. Curtis, Eugene N. Ivanov, Scott A. Diddams, T Udem, Hugh Robinson, James C. Bergquist, Wayne M. Itano, Robert E. Drullinger, David J. Wineland
Displaying 44326 - 44350 of 73929
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