[en] At the Tokai Reprocessing Plant (TRP), spent fuels are dissolved in nitric acid and the dissolved liquid is fed to the extractors (mixer settlers). In the mixer settlers, both uranium and plutonium are extracted by the solvent that contains tri-butyl phosphate. It is important to control the interface between organic and aqueous phase in the settlers And the interface is controlled by the flow control valve. This valve has maintainability problems because it takes a fair amount of time to maintenance. In addition, this is imported product, the production costs are high, and the delivery period for this valve is long. Therefore, we have tried to ohtain same type of valves with the confines of the country. This paper describes the trials and same experimental results. (author)

[en] We examine order parameter of superconducting (SC) state in quasi-two-dimensional organic conductor, α-(ET)₂I₃ salt under uniaxial pressure. The SC state has been found at temperature below the charge ordering temperature. The SC state is enhanced in the vicinity of the boundary between the metal and the narrow gap semiconductor due to the interplay of many bands and repulsive interactions. Such a scenario has been demonstrated in terms of a linearized gap equation. By calculating pairing interaction in terms of RPA, it is shown that the order parameter for the SC state is extremely anisotropic extended-S symmetry