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Ultrafast lasers provide surface-specific interactions with materials, allowing unique modifications of various properties. The benefits of this technology for increased efficiency in a variety of silicon solar cell architectures are discussed.
4-N-Methylpiperidyl benzilate (NMPB), a high affinity antagonist for the muscarinic cholinergic receptor, has been synthesized in carbon-11-labeled form through the N-[ 11 C]methylation of 4-piperidylbenzilate. The product was isolated by HPLC, and obtained in yields (> 100 mCi) and specific activities (500-3000 Ci/mmol) sufficient for in vivo evaluation in small animals. Time-dependent...
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