An innovative oil control ring designed by powder metallurgy techniques;AUTOMATED FUEL ROD CRUD SAMPLING SYSTEM;Coulomb Blockade Systems Fabricated by Atomic Force Microscopy;Digitalization and intellectualization of scraping operation (lst report) - investigation of a series of scraping operation by skilful worker;Digitalization and Intellectualization of Scraping Operation (2nd Report) - Development of a Scraping Operation Simulator