A system and apparatus for storing an item is provided that includes a pegboard wall-plug having a plate including a central opening. A tube projects outwardly from a rear surface of the plate in surrounding relation to the central opening. A plurality of circumferentially arranged, spaced-apart parallel ridges project outwardly from a surface of the cylindrical tube. A hole is defined by a surface of a wall where the surface defines a diameter of the hole that is less than a diameter of at least one of the circumferentially arranged, spaced-apart parallel ridges. In this way, when the tube is received within the hole, the circumferentially arranged, spaced-apart parallel ridges engage and bite into the surface so as to retain the pegboard wall-plug in the wall.

 
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> Composite Materials Comprising Carbon Nanotubes and Metal Carbonates

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