Isra University

In the current work, the phys. and radiation shielding properties for a glass system composed of (65-x-y) B₂O₃ + 10BaO + 10Na₂O+(10 + x) ZnO+(5 + y) CaO; x = y = 0, 5, 10, and 15 mol% were examined exptl.The d. of the prepared glass samples was examined using the Archimedes method, where the d. of prepared samples increased between 3.126 ± 0.066 g/cm³ and 3.731 ± 0.076 g/cm³ when the B₂O₃ compound was partially substituted by ZnO and CaO compoundsAddnl., the narrow beam transmission method and a 2′′ x 2′′ NaI (Tl) scintillation detector were utilized to measure the γ-ray shielding ability of prepared glass samples over an energy range of 0.662-1.332 MeV emitted by the radioactive sources Cs-137 and Co-60.The exptl. measurements were also validated using the Monte Carlo simulation method.The difference between the two approaches is ±5 %.The measurements depict an enhancement in the linear attenuation coefficient with increasing the B₂O₃ substitution by ZnO and Ca compoundsThe linear attenuation coefficient increases by 17.83 %, 18.30 %, 18.22 %, and 18.14 % at 0.662 MeV, 1.173 MeV, 1.252 MeV, and 1.332 MeV, resp., as ZnO + CaO rise across the concentration of 15 mol%-45 mol%.

A new boro-tellurite glass series doped with BaO and Er₂O₃ was fabricated according to the chem. formula of (21+x) BaO + 14Bi₂O₃ + (60-x-y) B₂O₃ + 5TeO₂ + y Er₂O₃ for optical and radiation shielding applications, where y = 0, 1, 2, and 3 mol% and x = 0, 2, 4, and 6 mol%.The UV-Vis spectra for the prepared samples were detected using the spectrophotometer over a wavenumber interval of 300-1000 nm.Based on the absorption spectra, several factors related to the optical properties, including band gap, Urbach energy, refractive index, dielec. constant, reflection loss, optical transmission, and molar refraction, were computed.The increase in BaO-Er₂O₃ content throughout 21-30 mol% increases the refractive index from 2.445 to 2.520.Addnl., the impact of the substitution of B₂O₃ by BaO-Er₂O₃ on the radiation shielding properties of prepared glasses was examined over an energy interval of 0.015-15 MeV.The increase in BaO + Er₂O₃ across the concentration of 21-30 mol% raises the linear attention coefficient of prepared boro-tellurite glasses between 257.819 and 302.334 cm-1 at 0.015 MeV.The LAC enhancement is accompanied by a decreased thickness of the half-value layer, which reduced from 4.659 cm to 4.194 cm at 15 MeV when the BaO + Er₂O₃ concentrations raised throughout 21-30 mol%, resp.

A bio-fabrication approach is a novel way to develop chitosan-stabilized magnesium oxide nanomaterials (cMgO-NMs). The process involves utilizing polymeric chitosan as the reducing and stabilizing agent. The characteristics of the developed cMgO-NMs were determined using various spectroscopical techniques. Fourier-transform infrared spectroscopy (FTIR) analysis revealed crucial functional groups, Ultraviolet-visible spectroscopy (UV-Vis) spectrum showed nanomaterial development with a peak at 358 nm, and powder X-ray diffraction (PXRD) pattern confirmed a pure cubic crystalline structure. Field emission scanning electron microscopy (FE-SEM) images depicted spherical shape, while energy dispersive X-ray analysis (EDX) confirmed Mg presence. The photocatalytic efficacy of these nanomaterials in degrading dye methylene blue (MB) was examined, and the findings demonstrated the remarkable proficiency of cMgO-NMs in breaking down the dye. The cytotoxic effects of cMgO-NMs were assessed for the first time on PCI-9A and PCI-13 cancer cell lines, yielding an IC₅₀ value of 51 μg/mL and 42 μg/mL. The cMgO-NMs treated PCI-9A and PCI-13 cancer cells morphological changes were observed via acridine orange and ethidium bromide and DAPI staining assay, and apoptotic mode of cell death was examined through flow cytometry and comet assay. Polymeric chitosan proved effective in extensive cMgO-NMs production, showing potential as an anticancer drug, although requiring further preclinical development.