1. Refractories, Ceramics and Building Materials Department, National Research Centre (NRC), 33 El Behooth St. Dokki- Giza, Egypt.
2. Pharmacognosy Department, Pharmaceutical and Drug Industries Division, National Research Centre (NRC), 33 El Behooth St. Dokki, Giza, Egypt.
3. Glass Research Department, National Research Centre (NRC), 33 El Behooth St. Dokki- Giza, Egypt.