Abstract: A sanitary washing device includes a private part washing nozzle, a casing, a sterilizing water generator, and an illuminator. The private part washing nozzle discharges water toward a private part of a user in a state of the private part washing nozzle is advanced into a toilet. The casing includes a nozzle storage part configured to store an entirety of the private part washing nozzle in a state of the private part washing nozzle is retracted. The sterilizing water generator generates sterilizing water supplied to the private part washing nozzle and the nozzle storage part. The illuminator irradiates sterilizing light into the nozzle storage part. The sterilizing light has a sterilizing action. The illuminator irradiates the sterilizing light toward a residual water occurrence portion at which the sterilizing water supplied into the nozzle storage part remains.

Abstract: A production method of one or both of (meth)acrolein and (meth)acrylic acid using a heat-exchange-type reaction vessel having a reaction tube at an inner part is provided, the method including causing an oxidation reaction of a raw material supplied to the reaction tube while circulating a heat medium to an outer side of the reaction tube to produce one or both of (meth)acrolein and (meth)acrylic acid, in which the reaction tube has i layers, which are a plurality of catalyst layers having different catalyst charging amounts per unit volume, in a longitudinal direction of the reaction tube, provided that i is an integer of 2 or more, and the oxidation reaction satisfies Expression (1). ??0.275(mol·K·h?1·W?1)??(1) Provided that (AAA) is satisfied. ?=F×(m1/?j=1imj)/(U×A). . .