Abstract: There is provided a hydrogen production apparatus having a simple structure for efficiently producing hydrogen. The hydrogen production apparatus 10 comprises a reactor 12 for reacting silicon (which may be waste silicon) and an aqueous basic hydroxide solution, a hydrogen absorbing alloy 20 for storing hydrogen produced by the reaction, and a reservoir/filter 14 which retains a solid or liquid product generated in the reactor 12 and filters a solution or suspension containing the solid or liquid product so as to separate the product from water.

Abstract: An optical fiber coating mold which is comprised of upper and lower molds having joint surfaces, a molding portion where a coating formation portion of an optical fiber can be arranged and a supply passage for supplying UV curable resin being formed between the joint surfaces of the upper and lower molds when the joint surfaces are superimposed one upon the other, the molding portion being filled with UV curable resin after arranging the coating formation portion of the optical fiber in the molding portion, the coating formation portion of the optical fiber being coated with the UV curable resin when the UV curable resin is cured by irradiating light thereto from outside, in which a shading plate is arranged in the periphery of the molding portion. In a case equipped with such a mold, there is provided a mirror or a lens for reflecting UV light to UV curable resin, the mirror or the lens being provided so as to secure the field of view for observation of the interior through an observation window of the case.

Abstract: An optical fiber ribbon splitting tool that accommodates an optical fiber ribbon in guide groove portion and splits longitudinally the accommodated optical fiber ribbon, where a cross section of the guide groove portion comprises a bottom portion with a width slightly smaller than a width of an optical fiber ribbon to be split, and side wall portions each composed of a straight-slant surface tilting so that a groove width becomes narrower as closer to the bottom portion from an opening portion in the guide groove portion.