[en] This is FY 1995 annual report of research results of the Yayoi research group and the high speed neutron science group as well as the cooperative application research results of reactor 'Yayoi' application, related to reactor 'Yayoi' and of accelerator Linac. The reactor was also operated smoothly in FY 1995, and its application and related research reached to 25 themes. The research using Linac reduced apparently to 7 themes from 14 in FY 1994, which showed apparent reduction because of integration of the cooperative research theme but showed more results in general. in particular, it was a wonderful result to success the formation of sub-pico second pulsed beam in world wide area. The Yayoi research group reported 13 researches which was two more than these in last fiscal year, all of which were the most advanced discussions in the field related to nuclear engineering. The high speed neutron science group started in FY 1993 aiming at construction of new research field on application of the high speed neutron as a quantum beam with excellent nuclear transfer and transmittance, to manifestation and control of new material function and design and creation of intelligent material. In FY 1995, the group began his full scale operation and reported on 8 themes. (G.K.)