Abstract: An information processing apparatus that is managed by a management business operator that manages a token, comprises: an accepting unit configured to accept a payment instruction to transfer a coin associated with a cash currency, from a first user to a second user; and a transmitting unit configured to transmit a transfer instruction to transfer a token associated with the coin, to an electronic currency management system in accordance with the payment instruction accepted by the accepting unit, wherein the electronic currency management system includes: a coin blockchain network for managing the coin, a token blockchain network for managing a token, and a transfer unit for transferring the coin associated with the token within the coin blockchain network in accordance with transfer of the token within the token blockchain network.

Abstract: An electronic currency management system comprises: a common area blockchain network for managing a coin associated with a cash currency; a first additional area blockchain network for managing a first token associated with the coin; a first issuing unit configured to issue the coin on the common area blockchain network; a providing unit configured to associate the coin issued by the first issuing unit with the first additional area blockchain network; and a second issuing unit configured to issue the first token on the first additional area blockchain network based on an amount of the coin associated with the first additional area blockchain network by the providing unit.

Abstract: The administration efficiency of a drug may be improved by establishing compatibility between the suppression of the release of a biological counter ion from a living body's biological interface and the maintenance of a good state of contact between each of a working electrode structure and a nonworking electrode structure and the biological interface. Coating films each composed of an external preparation containing: a hydrophilic polymer matrix agent; and an ion-exchange resin dispersed in the hydrophilic polymer matrix agent, or coating films each composed of an external preparation containing a hydrophilic polymer having an ion-exchange function are formed on the biological interface, and iontophoresis is performed through the coating films.

Abstract: A silicon-containing step ladder polymer comprising a unit represented by the following general formula (I): ##STR1## a unit represented by the following general formula (II): ##STR2## and a unit represented by the following general formula (III): ##STR3## where R.sup.1 represents a hydrocarbon or fluorine-substituted hydrocarbon group, R.sup.2 represents hydrogen or a trialkyl siloxy group, and R.sup.3 and R.sup.4 which may be identical or different with each other represent individually hydrocarbon or fluorine-substituted hydrocarbon groups, the molar ratio of the unit (I) to the unit (II) is between 5:1-100:1 and the molar ratio of the unit (III) to the total amount of the unit (I)+unit (II) is between 1:5-1:100, as well as a process for producing such polymer.

Abstract: A silicon-containing step ladder polymer comprising a unit represented by the following general formula (I): ##STR1## a unit represented by the following general formula (II): ##STR2## and a unit represented by the following general formula (III): ##STR3## where R.sup.1 represents a hydrocarbon or fluorine-substituted hydrocarbon group, R.sup.2 represents hydrogen or a trialkyl siloxy group, and R.sup.3 and R.sup.4 which may be identical or different with each other represent individually hydrocarbon or fluorine-substituted hydrocarbon groups, the molar ratio of the unit (I) to the unit (II) is between 5:1-100:1 and the molar ratio of the unit (III) to the total amount of the unit (I)+unit (II) is between 1:5-1:100, as well as a process for producing such polymer.