Provided are a steel sheet pile whose size is highly flexibly adjustable and having strong precision joints, a method of manufacturing the steel sheet pile, and a steel sheet pile wall formed of the steel sheet piles. A steel sheet pile 1 according to the present invention is obtained by joining a U-shaped-steel-sheet-pile first section 7, a U-shaped-steel-sheet-pile second section 11, and an L-shaped base member 13 together, the U-shaped-steel-sheet-pile first and second sections 7 and 11 being obtained by cutting a U-shaped steel sheet pile 3 and each including at least a joint portion, the U-shaped steel sheet pile 3 being formed by hot rolling, and the L-shaped base member 13 being manufactured by rolling or bending and having no joint portion. The entirety of the steel sheet pile 1 has a shape that includes arm portions 14 that extend outward from both ends of a U-shaped portion being substantially U-shaped in a cross section taken orthogonally to an axial direction.

A cultivated Oryza sativa plant is provided. The cultivated Oryza sativa plant has a partially or fully multiplied genome being at least as fertile as a diploid Oryza sativa plant isogenic to said genomically Oryza sativa plant when grown under the same conditions.

An object location guiding device and an operation method thereof are provided. The object location guiding device includes a processor, a controller and a guiding element array. Guiding elements of the guiding element array are disposed at different positions in a field so as to point to storage positions of different objects in the field. The processor converts the object data on an object list into storage-position information. The controller receives the storage-position information from the processor, converts the storage-position information into a first axis position code and a second axis position code, and drives the guiding element array by using the first axis position code and the second axis position code, so as to allow at least one corresponding guiding element of the guiding elements to point to a storage position of a corresponding object in the field.

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A window covering includes a first rail and a plurality tiltable slats. The slats can be connected to a slat tilt control mechanism positioned within the first rail. The slat tilt control mechanism can be configured to tilt the slats to a tilted position (e.g. a closed position, or orientation) during the lifting or lowering of the window covering. The slat tilt control mechanism can also be configured to tilt the slats from a tilted position to an open position, or horizontal orientation, during the lifting or lowering of the window covering material.