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Ultrastructural evidence has been found for the presence of polypeptide hormone-producing cells in the gut of Ciona intestinalis L. and Mytilus edulis L. which do not appear to have been described before. Due to their localization and ultrastructural characteristics, it is suggested that the cells in Mytilus edulis probably produce an insulin-like substance(More)
The activities of several proline-specific endo- and exopeptidases were determined in homogenates of immunocytochemically defined cultures of astrocytes, oligodendrocytes and neurones obtained from rat cerebral cortex. Astrocytes are significantly enriched in post-proline cleaving dipeptidyl peptidase II, prolidase and aminopeptidase P activities; neurones(More)
The use of radio frequency identification (RFID) technology is expanding rapidly in numerous applications such as logistics, supply chain management, transportation, healthcare and aviation. Due to the variety of the current applications, typical RFID systems use application specific hardware and proprietary protocols. These systems generally have long(More)
Current radio frequency identification (RFID) systems generally have long design times and low tolerance to changes in specification. This paper describes a field programmable, low-power active RFID tag, and its associated specification and automated design flow. RFID primitives to be supported by the tag are enumerated with RFID macros, or assembly-like(More)
This paper describes an ultra low power active RFID tag and its automated design flow. <i>RFID primitives</i> to be supported by the tag are enumerated with <i>RFID macros</i> and the behavior of each primitive is specified using ANSI-C within the template to automatically generate the tag controller. Two power saving components, a passive transceiver/burst(More)
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