A computer network includes a first processor for maintaining a Web page having an embedded first code module and accessible through a Web address. The liquid vaporized in the vaporizer is supplied to a reaction chamber. , and during operations a change of the peak temperature T of the catalyst in a tube axis direction is maintained in a definite range. In some embodiments, a sub-wavelength polarizer including magnetic garnet is included in the optical isolator. The system also includes a controller that is interfaced with the base station.