Abstract: Nanocomposite particles having good solubility and redispersibility in water are provided. The nanocomposite particles include a sugar material and nanoparticles containing a drug to be delivered and a biodegradable polymer, the sugar material being disaccharide, and a mass ratio of the nanoparticles to the disaccharide being within the range of from 40:60 to 60:40.

Abstract: Provided are a III/V group nitride semiconductor causing an oxidation-reduction reaction at a high photoconversion efficiency by irradiation of light, a photocatalytic semiconductor device, a photocatalytic oxidation-reduction reaction apparatus, and an execution process of a photoelectrochemical reaction. In the III/V group nitride semiconductor, the full width at half maximum of an X-ray rocking curve on a catalytic reaction surface thereof is 400 arcsec or less, and a carrier density in a surface layer portion having the catalytic reaction surface is 1.5×1016 cm?3 or more, but 3.0×1018 cm?3 or less. The photocatalytic semiconductor device has the III/V group nitride semiconductor laminated on a substrate.

Abstract: Disclosed is a novel process for production of lasofoxifene, nafoxidine or an analogue thereof, which comprises reduced number of reaction steps, has a high efficiency, and is practically advantageous. For the production of lasofoxifene or an analogue thereof, a compound represented by the formula (4) is used as an intermediate. The compound represented by the formula (4) can be produced using compounds represented by the formulae (1) to (3) as starting compounds by performing the coupling of the three components in one step.