Abstract: In a configuration of a method for preventing progression of corrosion in a steel pipe structure according to the present invention, two or more types of liquids 150 are injected, while being mixed, into a steel pipe that constitutes the steel pipe structure, from an opening at one of both ends of the steel pipe, and the inside of the steel pipe is filled with resin foam product (foam product 152) by foam expansion and hardening of the two or more types of liquids.

Abstract: As a manufacturing method of a stable coumarone-indene resin water-dispersed composition which does not use an organic solvent, can be applied to various resin compositions, enhance sticky and adhesive properties, water resistance, heat resistance, and compatibility, and achieve consideration of health and safety of operators, arrangement of a work environment, and cost reduction relating to exhaust gas treatment, a manufacturing method which includes a process of dispersing a coumarone-indene resin which contains 50% by weight or more of coumarone and indene in total as monomer-constituents and is in a solid form at an ordinary temperature in the presence of a surfactant by a wet milling and dispersing method is used.

Abstract: The present invention provides a recombinant plasmid comprising combining a hybrid plasmid vector with the isolated DNA sequences of one or more genes encoding nitrile degrading enzymes which are derived from bacteria belonging to the genus Rhodococcus, said hybrid plasmid vector comprising an isolated DNA sequence which confers on the vector the ability to replicate and amplify in the cells of bacteria belonging to the genus Rhodococcus, and an isolated DNA sequence which confers on the vector the ability to replicate and amplify in the cells of bacteria belonging to Escherichia coli, and an isolated DNA sequence containing a drug resistance gene.