In case that corrections are made, an errata will be provided in the following webpage: https://www.rri.kyoto-u.ac.jp/PUB/report/PR/ProgRep2018/ProgRep2018.htmlCO12-1 Research and Development of a High Counting Rate 3He Position Sensitive Detector System /S. Satoh et al. (30003) [243]CO12-2 Dependency of Coherent Cherenkov Radiation Matched to the Circular Plane on Apex Angles of a Hollow Conical Dielectric /N. Sei and T. Takahashi (30025) [244]CO12-3 Neutron Activation Analysis for the Stability Monitoring of Reference Materials /T. Takatsuka et al. (30036) [245]CO12-4 Friction Reduction by the Combination Use of MoDTC and Organic Friction Modifier /T. Hirayama et al. (30038) [246]CO12-5 Strutctural Studies of Water-Solubule Menaquinone-7 ...