A method of synthesizing carbon nanotubes including forming a solution including an organometallic compound containing catalyst particles and a solvent, adding at least one support to the solution, wherein the carbon nanotubes are synthesized on a surface of the at least one support, and applying radiation to the solution to which the at least one support is added. This means that attributes can be extended independent of modifications to the directory schema. A slurry is prepared from the pulp and used to form paper products. The second lens and the second sensing element have a second resolution and are used for scanning a second-sized document. The yarn can be used to weave high quality fabric with high count and high strength for four seasons, which greatly broadens the application fields of animal leather, improves the utilization of the leather and provides a kind of spinnable fiber for the textile industry. When it is determined that the memory card is connected to the connector, the controller loads a program in the memory card into a RAM.