Effect of gamma irradiation on properties of the synthesized PANI-Cu nanoparticles assimilated into PS polymer for electromagnetic interference shielding application.

Conductive polymer nanocomposites for electromagnetic interference (EMI) shielding are important materials that can be combat the increasingly dangerous radiation pollution arising from electronic equipment and our surrounding environment. In this work, we have synthesized polyaniline-copper nanoparticles (PANI-Cu NPs) by the copper salt based oxidative polymerization method at room temperature and then added with different concentration (0, 1, 3 and 5 wt%) in polystyrene polymer forming PS/ PANI-Cu nanocomposites films by means of the traditional solution casting technique. The formed PANI-Cu NPs were investigated by UV/Vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM) and SEM/EDX elemental mapping techniques.

Impact of gamma irradiation on physico-chemical and electromagnetic interference shielding properties of CuO nanoparticles reinforced LDPE nanocomposite films.

In the current work, cuprous oxide (CuO) nanoparticles coated with Tween 80 were successfully synthesized via the chemical reduction method. Nanocomposites composed of low-density polyethylene (LDPE) and different ratios of CuO nanoparticles were fabricated by the melt mixing process. 10% of ethyl vinyl acetate (EVA) as a compatibilizing agent was added to the molten LDPE matrix and the mixing process continued until homogenous nanocomposites were fabricated.

Risk factors for polycystic ovary syndrome among women of reproductive age in Egypt: A case control study.

Polycystic Ovary Syndrome (PCOS) is the most common endocrine disorder among women of reproductive age, associated with an increased risk of multiple diseases, and its pathogenesis is not fully understood. Purpose: identify risk factors for Polycystic Ovary Syndrome in reproductive-aged Egyptian women attending an outpatient gynecological clinic at a specialized hospital of Obstetrics and Gynecology in Port Said City, Egypt. The study population included 248 women; 124 women suffered from PCOS and 124 Non-PCOS.