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Long-term effects of tacrine on regional cerebral blood flow changes in Alzheimer's disease

Regional cerebral blood flow (rCBF) was studied in patients with Alzheimer's disease (AD) before and after 14 months of tacrine treatment. The treated group was compared with an identical reference group of untreated AD patients. At baseline the two groups showed an identical rCBF and mean hemispheric blood flow. After 14 months the tacrine-treated patients showed a stable rCBF level and a signifi

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We investigated properties of electrical contacts to filamentary nanocrystals based on InAs, synthesized by chemical-beam epitaxy. Robust, low resistive Ohmic contacts were manufactured to InAs segment of filamentary nanocrystals both directly and indirectly, through a catalytic particle at the top of nanocrystals. Current-voltage characteristics and degradation characteristics of devices based on