Abstract: To appropriately register information regarding an air conditioner in a server, a system including an air conditioner, a terminal connected to the air conditioner, and a server is provided. A control unit of the terminal is configured to acquire information regarding the air conditioner, and send the information regarding the air conditioner to the server. A control unit of the server is configured to store information regarding an air conditioner, which is scheduled to be connected to the terminal. The control unit of the server is configured to determine whether the information regarding the air conditioner, which is received from the terminal, and the information regarding the air conditioner, which is stored, match each other or not.

Abstract: Facilitates the management of data without having the developer or the like of the air conditioner register the data model of the air conditioner. A system includes an air conditioner; a terminal configured to communicate with the air conditioner; and a server configured to communicate with the terminal, wherein the terminal includes a control unit configured to acquire, from the air conditioner, a data model indicating a data structure of data collected by the air conditioner, and transmit the data model to the server.

Abstract: Oxyalkylene group of an alkylene oxide is inserted into a chain-type ether compound having at least one lower alkyl group by reacting the latter with the alkylene oxide in the presence of a catalyst prepared by mixing boron trifluoride and/or stannic chloride with an active-hydrogen compound exemplified by water or a lower aliphatic alcohol. The reaction results reduced formation of by-product dimer of the alkylene oxide even under an increased charging ratio of the alkylene oxide to the chain-type ether.

Abstract: A process for the production of a mono- or poly-alkylene glycol diether which consists of reacting an ether having at least one lower alkyl group with alkylene oxide in the presence of a heteropoly acid or a heteropoly acid acidic salt. Heteropoly acids and their acidic salts whose ratio of the hetero and coordinate atom is 1:6 and 1:12 are preferably used.