1. Department of Chemical and Environmental Engineering Materials Science and Engineering Bldg. Room 343 UC Riverside Riverside CA 92521 USA
2. Lyles School of Civil Engineering Purdue University West Lafayette IN 47907 USA
3. Departamento de Aeronautica Universidad Nacional de La Plata Buenos Aires 1900 Argentina
4. Department of Earth Sciences UC Riverside Riverside CA 92521 USA
5. National Synchrotron Light Source Brookhaven National Laboratory Upton NY 11973 USA