Abstract: A memory device includes a first electrode, a selector layer and a plurality of first work function layers. The first work function layers are disposed between the first electrode and the selector layer, and a work function of the first work function layer increases as the first work function layer becomes closer to the selector layer.

Abstract: A sprinkler (10) includes a tubular housing (12) and a cover (14) fastened with each other. A smaller internal sleeve (70) has a similar configuration with the housing (12) and is generally positioned within the housing (12). The sleeve (70) includes a plurality of inlets (82) in the wall. A rotor (40) having radial blades (48) positioned circumferentially at intervals, is disposed in the sleeve (70) and is adapted to be impacted to rotate by the flow from the inlets (82) of the sleeve (70). A hollow spindle (52) which can be slidably moved along the axis of the rotor (40), is designedly actuated by the rotary movement of the rotor (40) and also generally in a synchronous rotation with the rotor (40). Such spindle (52) can be pushed by the water pressure to have the nozzle head (54) extend upward and exposed in an exterior for water dispersal.

Abstract: A connector member (10) for use with a sprinkler system includes a hollow body (12) having a passage (14) therein, and at least two open end portions (16) for communication with the exterior. Each open end portion (16) includes an inner tubular section (18) in communication with the passage (14) of the body (12), and an outer tubular section (20) in a concentric relation with the inner tubular sections (18). The outer tubular section (20) includes external threads (23) on its surface around the central axis, and several slits (21) extending from the edge axially. The connector member (10) further includes two types of covers (26, 28) for respective cooperation with the open end portions (16) wherein one type is a fastening device (26) to firmly attach the pipe onto one open and portion (16) of the connector member (10), and the other type is a irrigation device (28) installed onto the other open end portion (16) for adjustable spraying water on the ground around such connector member (10).