Abstract: A fluid sterilization apparatus according to an embodiment includes a tubular cover; a tubular portion provided inside the cover; a supply head provided at one end of the tubular portion; a discharge head provided at the other end of the tubular portion; at least one light-emitting element provided in at least one of the supply head and the discharge head and allowed to irradiate an inside of the tubular portion with ultraviolet rays; and a temperature control unit capable of controlling a temperature of a space between the cover and the tubular portion.

Abstract: The spectroscope of the present disclosure includes a first base member comprising a first surface having a diffraction grating and a second surface which is a rear surface of the first surface, a second base member comprising a third surface having a diffraction grating and a fourth surface which is a rear surface of the third surface, a holder comprising a lid having first holes and second holes opposed to the fourth surface, and arranging and fixing the first base member and the second base member, and a fixing member disposed in the second hole, connecting the fourth surface and the lid, and fixing the second base member to the holder in a noncontact manner.

Abstract: A method for retrieving information related to a desired item from a database storing information which are collected from a system to be monitored is disclosed. A plurality of states of the system are displayed in time sequence on screen of a display. Each of the states is represented by a plurality of items of collected information. When inputting a desired item of a state selected from the states displayed on the screen, a state of the system is retrieved from the database based on the desired item, and the retrieved state is displayed on the screen.