The caging effect of the host environment on photochemical reactions of molecular oxygen is investigated using monochromatic synchrotron radiation and spectrally resolved fluorescence. Oxygen doped clusters are formed by coexpansion of argon and oxygen, by pickup of molecular oxygen or by multiple pickup of argon and oxygen by neon clusters. Sequential pickup provides radially ordered core-shel...

BACKGROUND Osteopetrosis is a rare genetic disorder characterized by increased bone density due to a defective osteoclast's bone resorption. Three clinical forms can be identified based on severity, age of onset and inheritance: the dominant benign form (ADO), the intermediate form (IRO) and the recessive severe form (ARO). Several genes have been involved in the pathogenesis of these different...

Received 1/8/2002; accepted 1/17/2002. For correspondence or reprints contact: Pan-Fu Kao, M.D., Department of Nuclear Medicine, Chang Gung Memorial Hospital and Chang Gung University, 199 Tung Hwa North Road, Taipei 105, Taiwan, R.O.C. Tel: (886)3-3281200 ext. 2622, Fax: (886)3-3282619, E-mail: [email protected] Background: Fluor ine-18-2-deoxy-D-glucose ([F]FDG) has been widespread use...

The present experiment tested 60 individuals on a multiple screen, visual target detection task. Using a within-participant design, individuals received no-cue augmentation, an augmenting tactile cue alone, an augmenting auditory cue alone or both of the latter augmentations in combination. Results showed significant and substantive improvements in performance such that successful search speed ...

Diode lasers operating at 3 mu m in continuous wave mode at room temperature were fabricated using metamorphic molecular beam epitaxy. The laser heterostructures have a lattice constant 1.3-1.6% bigger than that of the GaSb substrates. The mismatch between the epi-structure and the substrate lattice constants was accommodated by a network of misfit dislocations confined within linearly composit...

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