The present invention provides a process for producing ultrafine particulate complex oxide containing titanium oxide, including vapor-phase producing a complex oxide containing titanium oxide having a BET specific surface area of about 5 to about 200 m2g, where a starting material gas containing titanium tetrachloride and an oxidizing gas are preheated to about 700 C. A space of the refrigerator main body or the cooling chamber door can be utilized to facilitate receiving and keeping food items. Information about media consumption by such specific television sets or other viewing means may be returned to a commercial client of the system through a trusted third-party intermediary service and, in certain embodiments, encoded tokens may be used to manage the display of certain events as well as to enable robust auditing of each involved party’s contractual performance. The accelerating electrode can be either an attracting or a repelling electrode.