Electromagnetic Radiation Shielding Properties of Polyvinyl Alcohol/Polyethylene Glycol/Polyvinyl Pyrrolidone Polymer Blends Containing Copper Cobaltite Oxide, Copper Cobaltite Oxide/Copper Sulfide and Vanadium/Cadmium Zinc Sulfide Composites: Reducing the Exposure Risk for Dental Patients - Nouh, Abdallah S.; Nouh, Samir A.; Barakat, Mai ME.; Gouda, Mona M. (Journal of Macromolecular Science: Physics, 2026)