In cooperation of the Japan Atomic Energy Research Institute with the High Energy Accelerator Research Organization (KEK), the construction of the high intensity proton accelerator facility (J-PARC) ...is advancing. Together with three main research facilities, that is, research for elemental particles of atomic nucleus and neutrino, research for materials science and life science, and for nuclear conversion of radioactive wastes, a linac and synchrotrons with 3GeV and 50GeV to supply protons with various energy levels to the experimental facilities are installed. Research targets of J-PARC are classified to three categories, that is, the clarification of mechanism to produce mass of hadron, which is an aggregate of quarks, by the elemental particles experiment facility, researches on structures and functions of materials and protein with utilizing neutron and muon by materials and life science experiment facilities, and fundamental R&D on nuclear conversion technology of long life radioactive nuclear species in radioactive wastes by the nuclear conversion experimental facility. The power, product of electric current and accelerating energy, is aimed to achieve 1MW. A paper summarizes discussion made on research plans by the committees of the Atomic Energy Society of Japan.
A mutant strain HA-2 was derived from an adenine-requiring mutant of Bacillus subtilis IAM 1145 by transduction with bacteriophage SP-10 and subsequent N-methyl-N′-nitro-N-nitrosoguanidine treatment. ...The strain could convert exogenously supplemented hypoxanthine or inosine to succinyladenine, succinyladenosine and succinyladenosine 5′-monophosphate (succinyl AMP), and accumulate these compounds in the culture fluid. The strain, however, failed to convert exogenously supplemented inosine 5′-monophosphate to these succinyl compounds. The yields of succinyladenine, succinyladenosine and succinyl-AMP in a production medium supplemented with 17 mm of hypoxanthine were about 4.4 mm, 5.2 mm and 2.2 mm, respectively, after 4 days growth.
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