Abstract: Photoelectrochemical (PEC) technology for the conversion of solar energy into chemicals may require cost-effective photoelectrodes to efficiently and stably drive anodic and/or cathodic half-reactions to complete the overall reactions for storing solar energy in chemical bonds. Apparatus and systems incorporating effectively transparent metal catalysts enable the design and/or implementation of PEC devices for light harvesting. Triple-junction photocathodes with the triangular catalyst grids are provided to improve the efficiency of the photocathodes to generate renewable fuel from sunlight.

Abstract: A sawing platform and workbench includes a stand portion and a platform supported by the stand portion. A pair of adjusting plates fixed to opposite ends of the platform adjust the height and angle of the platform. Each adjusting plate has first and second spaced, vertical slots formed therein to permit vertical movement of the platform. The second slot of each of the adjusting plates includes an arcuate slot formed in the adjusting plate continuous with the second slot to permit angular movement of the platform. An adjusting rod includes a first end portion contained within each of the first and second slots to limit vertical movement of the platform over a distance substantially equal to the length of the vertical slots and to limit angular movement of the platform over a range commensurate with the length of the arcuate slots. A second end portion of the adjusting rod is fixed to the stand portion. Locking means lock the platform at a desirable height and angle.

Abstract: Frame apparatus for leaf-collecting garbage bag having a rectangular frame. One side of the rectangular frame is provided with leg means to support the apparatus in an upright standing position on the ground. The side opposite and parallel the one with the leg means is provided with an attachment means for selectively attaching a handle. The other two sides of the frame apparatus which are vertical to the ground when the apparatus is used are provided with length adjustment means for adjusting the area covered by the frame structure to accommodate different sizes of the garbage bags used. Near the four corners of the frame apparatus are provided with clip elements for attaching plastic garbage bag to the frame apparatus.