The present invention discloses a rotor for hydraulic motor comprising a plurality of vanes spacedly apart inserted into a plurality of vane slots formed on the rotor respectively, at least one groove is provided in outer edge of the rotor between the neighboring vanes, and extending inside along the axial direction of the rotor. The capacitor of the invention comprises an anode of aluminum having a dielectric oxide film formed over a surface thereof from amorphous alumina, and is characterized in that a plurality of tunnel-shaped etching pits are formed in the anode. The integrated circuit device further includes an under-bump-metallurgy layer between the substrate and the conductive pillar. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity. One or more of these indent portions may contain adhesive. The invention relates to the seeds of lettuce cultivar Sun Valley, to the plants of lettuce cultivar Sun Valley and to methods for producing a lettuce plant by crossing the cultivar Sun Valley with itself or another lettuce cultivar.