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We describe a novel method for determining the pressure and velocity fields for a weakly compressible fluid flowing in a thin three-dimensional layer composed of an inhomogeneous, anisotropic porous medium, with vertical side walls and variable upper and lower boundaries, in the presence of vertical wells injecting and/or extracting fluid. Our approach uses(More)
The authors report on the first demonstration of optical fibres based on the Ga:La:S system. Core-clad structures have been fabricated by the rod and tube method and pulled into lengths > 200m. Transmission over the wavelength range I .O to 6.5~~ with fibre loss approaching the absorption and scattering level of the bulk glass. is obtained, opening the(More)
Output performances of fiber-based optical systems, in particular fiber lasers and amplifiers, can be controlled using tailored fiber designs, gain profiles, and pump light overlap with the gain medium. Here, the performances of 2-μm light, propagating in three large-mode area fibers, a step-index fiber, a photonic crystal fiber (PCF), and a leakage channel(More)
public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this(More)
Mechanical failure was induced in cadaver spines by applying flexion, extension, and lateral bending loads with continuous recordings of moment and rotation. Each spine was then stabilized with Harrington distraction rods, compression rods, and titanium mesh in sequence, and tested in a similar manner. The spines stabilized with mesh appeared stronger but(More)
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