Abstract: A heat sink-based single-board computer holder assembly includes heat sink including base, mounting flanges located at opposing top and bottom sides of base, insertion slot unit located at mounting flange, first slot and second slots located at front side of mounting flange, a plurality of third slots located at back side of mounting flange between first slot and second slots, and bevel guide facets located at two distal ends of first slot, and positioning mechanism including two fastening members inserted through bevel guide facets and first slot and second slots at two mounting flanges, and two pair of wedge-shaped sliding blocks mounted on fastening members and abutted against bevel guide facets and movable along bevel guide facets upon rotating fastening members. The structural design of insertion slot units can easily be made by using computer numerically controlled machine tool to perform linear milling process, simplifying manufacturing process and reducing cost.

Abstract: A mounting apparatus includes a receiving tray, a rotating member rotatably attached to the receiving tray, and a resisting member moveably attached to the rotating member. The receiving tray is used for receiving a connector and includes a side plate. The side plate includes a positioning portion. The rotating member includes a mounting means. The connector is sandwiched by the rotating member and the receiving tray. To engage the positioning portion with the mounting means, the rotating member is rotatable relative to the receiving tray. The resisting member is moveable relative to the rotating member and abuts the rotating member to prevent the positioning portion from disengaging from the mounting means. The disclosure further offers a mounting assembly.

Abstract: A cooling fan assembly includes a fan with a frame, two fixing members arranged at two opposite lateral sides of the frame, and a plurality of fixing poles detachably interconnecting the frame with the base portions of the two fixing members. The two fixing members each include a base portion and a handling portion extending from a top of the base portion. The handling portions extend upwardly and inclined toward each other along a direction away from the base portions. One end of the fixing pole penetrates through and is fixed on the frame, and the other end of the fixing pole is gripped by the base portion.

Abstract: A mounting apparatus includes a receiving member for receiving a storage device. The receiving member includes a bottom plate, two sidewalls respectively extending upwards form two opposite sides of the bottom plate, and a plurality of positioning shafts. Each sidewall has one perforation. The plurality of positioning shafts is arranged extending through the perforation, and secured in the perforation.

Abstract: A rapid method for the separation of nanoparticles having as few as one ligand attached thereto has been developed. The method relies on the size exclusion separation of a population of nanoparticle-ligand complexes having a narrow uniform size distribution. Ligands are typically biopolymers, functionalized to bind to other nanoparticles for the construction of geometric nanostructures.