A multi-piece chest protector includes a front section connected to side sections by straps or other connectors that provide independent and relative movement between the front section and the side sections. with ducts that have openings on filter holders for filters. For example, content can be laid out in one or more discrete areas and navigation enabled in unique sequential andor non-sequential manners. In some embodiments, the tube is provided with an electric heating element. More specifically, provided is a method for synthesizing a nanoparticle by adding one or more precursors to an organic solvent to grow a crystal, wherein a specific carbene derivative is used as the precursor. Adults may choose to participate in an organized motivational program that encourages individual development and professional collaboration.