The PICASSO experiment at SNOLAB reports new results for spin-dependent WIMP interactions on 19 F using the superheated droplet technique. A new generation of detectors and new features which enable background discrimination via the rejection of non-particle induced events are described. First results are presented for a subset of two detectors with target… (More)
The microstructure of electroplated Cu is highly dependent on the characteristics of underlying barrier and seed layers. A smooth and strongly textured Cu seed layer is needed to promote the development of highly textured, large grains in the electroplated Cu film, even in Damascene structure. This microstructure is desired for extended reliability.
A prospective, randomized study was performed in 87 patients to compare the safety, efficacy and dose requirements of two sedation techniques for stereotactic headframe application. Sedation administration and headframe application averaged 30 min. Fifty patients weighing 76 +/- 13 kg (mean +/- SD) received mean doses of 154 micrograms fentanyl plus 5.5 mg… (More)