“…Nanotechnology studies published in the 2005-2008 time period (Calero, Buter, Valdes, & Noyons, 2006;Guan & Ma, 2007;Kostoff, Stump, et al, 2005Kostoff, Murday, Lau, & Tolles, 2005Miyazaki & Islam, 2007;Mogoutov & Kahane, 2007;Porter, Youtie, Shapira, & Schoeneck, 2008;Schummer, 2007), as well as other studies published during that time frame (Basu & Lewison 2005;He, Zhang, & Teng, 2005;Kademani, Kumar, Sagar, Kumar, 2006;Zhou & Leydesdorff, 2006), also used the SCI for comparison purposes. All these studies concluded the USA was still leading the PRC in numbers of nanotechnology publications, and in quality of these publications, but the PRC was rapidly closing this gap.…”