Abstract: A light-emitting device includes a semiconductor laser element, a wavelength conversion member, and a package. The wavelength conversion member includes a wavelength conversion portion and a reflective portion. The wavelength conversion portion includes a light incident surface and a light-emitting surface. The package includes a disposition region. The wavelength conversion member is disposed at a position away in a first direction from a position at which the semiconductor laser element is disposed. The light-emitting surface has a shape that, in a plan view perpendicular to the light-emitting surface, has a first region decreasing in width in a second direction perpendicular to the first direction from the side closest to the semiconductor laser element toward the first direction.

Abstract: The present invention provides a method for producing raw materials for a reformer by cracking and desulfurizing petroleum fuels, characterized by cracking and desulfurizing petroleum fuels in a desulfurizer in the fuel cell electricity generation process at a temperature of 300.degree.-600.degree. C., preferably 350.degree.-500.degree. C., a pressure of 1-10 kg/cm.sup.2, an H.sub.2 /oil of 500-2000, preferably 800-1000, and an SV of 0.5-4 hr.sup.-1 using a zeolite catalyst such as Y-type zeolite or a metallosilicate catalyst such as one having an Si/Me atomic ratio of 40-3200 where Me is Al, Ni, Co, Mo, W, Fe, Cr or Ga.

Abstract: The present invention provides an improved fuel cell electricity generation rocess which includes a desulfurizer, an adsorber, a reformer, a shift converter, and a fuel cell wherein reformed gas from the reformer is treated using a non-porous gas separation membrane comprising a polymer in place of the converter at a temperature of 50.degree.-150.degree. C. and a pressure of 2-10 kg/cm.sup.2 to separate carbon monoxide contained in the reformed gas.