Application of In-service temperature lowering to reduce radioactivity corrosion product deposition on carbon steel piping of BWR residual heat removal system; Application of laser ablation processing in electric power system industries;Application of the potential drop method for monitoring an outside crack in the housing of a quick-acting valve-safe continuation of operation for two years until removal of the housing;Application of Thermal-hydraulic Simulations for Nuclear Plants;Applications of YAG laser processing in underwater welding and cutting;Aspire after advanced thermo nuclear energy conversion technology;