Winston A. Saunders

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The synthesis of luminescent nanometer-scale Si clusters by spark ablation from a crystalline Si substrate is described. The cluster source, described in the text, generates clusters in a flowing Ar stream at atmospheric' pressure. Electron microscopy reveals that the clusters have diameters in the 2-4 nm size range. The luminescence spectra of the(More)
Clinical and radiographic assessment of the spine was carried out in 75 patients with osteoarthrosis (OA) of the hip and in 75 controls without hip disease. Radiographic degenerative changes in the spine were more frequent in the patients with OA hips, occurring in both the dorsal and lumbar spine. Moderate or severe changes were found in the dorsal spine(More)
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