Abstract: Tracer particles together with air are jetted from a nozzle of a seeder into a hood, the air is guided by a collision surface of the hood, deflected to a downstream side in an airflow direction in a wind tunnel, and flows out into the wind tunnel through an opening of the hood. Tracer particles having a large diameter fly straightly without being drifted by the deflected air and collide with the collision surface and are trapped thereon and are prevented from being supplied into the wind tunnel. Tracer particles having a small diameter are drifted by the deflected air, thereby deflected, and supplied into the wind tunnel without collision with and adhesion to the collision surface.

Abstract: Tracer particles together with air are jetted from a nozzle of a seeder into a hood, the air is guided by a collision surface of the hood, deflected to a downstream side in an airflow direction in a wind tunnel, and flows out into the wind tunnel through an opening of the hood. Tracer particles having a large diameter fly straightly without being drifted by the deflected air and collide with the collision surface and are trapped thereon and are prevented from being supplied into the wind tunnel. Tracer particles having a small diameter are drifted by the deflected air, thereby deflected, and supplied into the wind tunnel without collision with and adhesion to the collision surface.

Abstract: An illumination switch is provided which can satisfactorily shield electromagnetic wave noise caused to emanate from an EL sheet and with which an excellent click feeling can be obtained. The illumination switch (10) is provided with a substrate (11), a switch pattern (12) formed on the substrate (11) and an EL sheet (14) which is formed so as to face the switch pattern (12) and to cover the movable contact (13) set up to be detachable on the switch pattern (12), the substrate (11) and the movable contact (13). The EL sheet (14) is provided with a shield layer (27) which shields the noise wherein the shield layer (27) is provided with an opening (27a) formed in the region facing the movable contact (13).

Abstract: Melodies are changed over sequentially in accordance with hours at each of which an alarm melody is to be played as a time signal so that predetermined melodies are always played at predetermined hours, respectively. In addition, even if the hours and the melodies become discordant with each other as a result, for example, of the correction of the time made during the timekeeping operation of the timepiece, the melodies are automatically reset at a predetermined time so as to be coincident with the corresponding hours.A switch S2 for detecting a correct hour is on-off controlled by a cam 6a provided as an integral part of a minute pipe 6 that makes one revolution per hour. A reset switch S3 is on-off controlled through a reset lever 5 pivoted by an hour wheel 4 that makes one revolution per twelve hours. An alarm control circuit in an IC 3 incorporates a plurality of melodies.

Abstract: L-Phenylalanine is isolated in pure form from an aqueous solution thereof containing cinnamic acid by subjecting the aqueous solution to toluene extraction to extract cinnamic acid therefrom; separating the toluene phase; and then concentrating the aqueous phase, until crystals of L-phenylalanine form therein, while concurrently separating the crystalline L-phenylalanine from the liquid aqueous phase.

Abstract: A wall clock has a first time increment portion comprising a stationary frame member. A timepiece movement is supported by the stationary frame member. A first wheel is rotatably driven by the timepiece movement, and a first time indicating member is rotatably driven by the timepiece movement for indicating a first time increment (i.e., hours). A belt is disposed around and driven by the first wheel. A second time increment portion rotatably supports a second wheel. The second wheel is rotatably driven by and suspended only by the belt, so that the second time increment portion is suspended only by the belt. A second time indicating member is rotatably driven by the second wheel for indicating a second time increment (i.e., minutes).