The authors have developed pulsed-power equipment for sterilizing mackerel fillets with intense bursts of electric energy to kill anisakis larvae, and deployed it in a factory setting for experimental production and marketing. A previous report described the results of a study of the dependence of sterilization on the pulsed-power input, and its water heating effect. There remained issues related to productivity, and to the gain and the reproducibility of the S/N ratio. In the present report the same data are reexamined in terms of an ideal function defined by the pulsed-power input and output. It is shown that water heating can be explained by the pulsed-power output, and conditions are presented under which 100 ％ sterilization can be achieved with a pulsed-power output small enough to suppress water temperature elevation. Further research in the near future will be directed toward the use of pulsed-power output to decide whether any anisakis might survive, and to finding the threshold value for sterilization, with the goals of increasing productivity and improving the reproducibility of the gain.

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Many optical components are used in measuring equipment. If the bonding of these components is not robust, external conditions may lead to large measurement errors, or even make measurement impossible. When an adhesive material used in an optical component bonding procedure was found to be listed in the European REACH restrictions, a substitute material was selected, but this substitution led to reduced yield. To improve the yield, nominal-is-best parameter design was carried out and an L18 orthogonal array experiment was performed. Even though data could not be obtained for half of the columns in the array, the yield was greatly improved and costs were reduced.

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