German industrial giant Siemens said Thursday that its third-quarter net profit fell by 65 percent from the same period a year earlier to 501 million euros ($719 million). The drop was due largely to the \"reevaluation of the commerical feasibility of particle therapy\" and the result of an arbitration decision regarding a joint venture with the French group Areva, a Siemens statement said. Siemens chief executive Peter Loescher gave a prudent outlook for the group\'s full fiscal year, which runs from October 1 to September 30, saying: \"Our markets are still robust, although the risks are increasing somewhat in the global economic environment.\" But the company also reaffirmed its forecast for continuing operations to generate a profit of at least 7.5 billion euros, excluding payment to former partner Areva. Siemens also expects new orders to rise significantly, and sales growth of around five percent.