Abstract: According to the present invention, in a heating furnace in which a fuel is burned by mixing the fuel supplied through a fuel supply pipe with combustion air supplied through a combustion air supply pipe by a combustion burner, a cooling medium guiding pipe through which cooling air for cooling the fuel supply pipe is guided into the furnace is provided to the outer peripheral side of the fuel supply pipe, and a cooling water supply pipe through which cooling water is supplied via a cooling water adjusting valve is connected to the cooling medium guiding pipe.

Abstract: According to the present invention, in a heating furnace in which a fuel is burned by mixing the fuel supplied through a fuel supply pipe with combustion air supplied through a combustion air supply pipe by a combustion burner, a cooling medium guiding pipe through which cooling air for cooling the fuel supply pipe is guided into the furnace is provided to the outer peripheral side of the fuel supply pipe, and a cooling water supply pipe through which cooling water is supplied via a cooling water adjusting valve is connected to the cooling medium guiding pipe.

Abstract: The invention relates to boiled rice foods containing soybean polysaccharides and trehalose. The texture of the boiled rice foods does not deteriorate when returned to an edible state by de-chilling or thawing following distribution in a chilled or frozen state, and are free from hygiene problems associated with de-chilling or thawing at room temperature.

Abstract: A document editing system for storing a plurality of format data records in a tree structure which define the format of a document. The format data records comprise any combination of a title field, a basic field, and a group field. A document data management section, in response to a document preparation request from a work station, prepares a basic document having a tree structure consistent with the document format data records. Furthermore, the document data management section updates the basic document with externally input data to prepare a target document. The document data management section determines the number of lines and characters per line of a group field including a line/character increase or decrease field, from a tree structure subordinate to the group field.