Radiation-Induced Modifications on Spectroscopic and Thermal Properties of CR-39 and SR-90 Nuclear Track Detectors FT-IR Spectroscopy of Carbon Dioxide in CR-39 and SR- 90 Track Detectors Irradiated with Ions and Gamma-Rays at Different Energies and Fluences Determination of the Uranium Content of Egyptian Phosphate Ores by Passive and Active Detectors Synergistic Effect of some Halide Ions on the Inhibition of Zinc Corrosion in Hydrocchloric Acid by Tetrahydrocarbazole Derivatives Compounds.