摘要:
A method for producing a single-wall carbon nanotube, comprising contacting an organic dehydrated alcohol with a catalyst in a closed space in vacuum at a temperature of 600 to 900° C.
摘要:
In monitoring a network in which nodes such as a host, a hub, rooter, etc. are interconnected, each node is indicated by an icon, and the connection between the nodes is indicated by a line. A node to be regarded is positioned in the center of the map as a root, and a node directly connected to the root is arranged as a node at the second hierarchical level on the circumference of the circle with the root centered. The node connected to the node at the second hierarchical level is arranged as a node at the third hierarchical level on the circumference of the concentric circle, with the root centered, having a larger radius than the node at the second hierarchical level. Similarly, the network configuration is assumed to be a hierarchical structure with the root centered, and an icon indicating an object at a higher hierarchical level is arranged on the circumference of a concentric circle having a larger radius.
摘要:
A polishing system and a method of control of the same enabling reliable transfer of the workpieces into and out of the system while maintaining the precision of polishing of the workpieces. Provision is made of a polishing apparatus 1, a first transfer apparatus 2, a second transfer apparatus 3, and a control apparatus 4. In the polishing apparatus 1, workpieces W held in m number of holding holes 14 formed in n number of carriers 14 are polished on their two surfaces by a lower platen 10 and an upper platen 19. The control apparatus 4 finds the revolution angle of the carriers 14 when the workpieces reach the desired thickness, makes the carriers revolve until the revolution angle of a whole multiple of 360.degree./n closest to the revolution angle found, and then makes the polishing apparatus 1 stop. Further, it finds the rotation angle of the carriers after stopping and makes mounters 24 and 34 of a loader 23 and unloader 33 rotate by exactly that rotation angle so as to transfer the workpieces W into and out from the carriers 14.