Abstract: An ultraviolet light fluid treatment device for irradiating a fluid flowing in a flow path tube with ultraviolet light includes a substrate; a light source disposed on the substrate and configured to emit the ultraviolet light; a light transmissive member disposed between the light source and the flow path tube and configured to transmit the ultraviolet light from the light source; and a support member fixed to the substrate and configured to hold an adsorption member that includes an adsorbent material adsorbing moisture. The support member has a reflective surface. The reflective surface is positioned between the light source and the adsorption member, and is configured to reflect the ultraviolet light from the light source.

Abstract: A consensus network includes Messagenodes and Validators. The Messagenodes add transactions to pre-built blocks of a blockchain. The Validators validate the transactions added to the blocks by the Messagenodes. Validators individually sign blocks in a pre-commit phase and if a block receives a threshold number of signatures, the Validators verify the signatures in a counting phase and commit the block to the blockchain. When a block is committed, it is linked to the previous sealed block in the blockchain.