[en] Results are reported of nuclear power research including reactor physics, reactor materials, reactor technology, fuel cycle chemistry; of research in ionizing radiation applications including radiation technologies, radiopharmaceuticals, neutron activation analysis, neutron radiography. Services are outlined provided by the UJV, such as the production of radiopharmaceuticals, development and manufacture of semiconductor radiation detectors, irradiation services, data processing services, library and information centre services. (E.J.). 38 figs., 7 tabs., 107 refs