[en] This is the report of the results of each investigation performed in the Research Reactor Institute, Kyoto University, during the second half of fiscal year 1977. It includes 61 reports. It is briefly divided into 5 reports on radiation proper, 11 reports on biology and medicine and 45 reports on physics, chemistry and mineralogy. In the last 45 reports, 6 reports on material, 10 reports on activation analysis and 1 report on dating are included. Since each report is limited to the abstract of 1 page using the same format, details of the contents are not known. However, general trends of Investigations may be known. (Wakatsuki, Y.)