1. Department of Chemistry Tafila Technical University P.O. Box 179 Tafila 66110 Jordan
2. Department of Chemistry University College in Al-Qunfudah Umm Al-Qura University 1109 Makkah Al-Mukarramah Saudi Arabia
3. Max-Planck-Institut fuer Eisenforschung GmbH Max-Planck-Str. 1 40237 Düsseldorf Germany
4. Applied Physical Chemistry Heidelberg University Im Neuenheimer Feld 253 69120 Heidelberg Germany
5. Thyssenkrupp Bilstein GmbH Herner Str. 299 44809 Bochum Germany