Publications by authors named "Khaled Zakaria"
Article Synopsis
- Asphalt is widely used for its strong adhesion and affordability, but it lacks effective corrosion protection, requiring improvements through additives.
- In this study, a poly(amidoamine)-zinc oxide (PAMAM-ZnO) nanocomposite was blended into asphalt, with a 2% ratio showing an exceptional corrosion protection efficiency of nearly 98% and a significant increase in charge transport resistance.
- The corrosion protection mechanism relies on a protective barrier formed by PAMAM-ZnO and the sacrificial action of ZnO, which interacts preferentially with corrosive agents, thus enhancing the effectiveness and durability of the asphalt coating.
The detection of N-hexanoyl-l-homoserine lactone (C-HSL), a crucial signal in Gram-negative bacterial communication, is essential for addressing microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB) in oil and gas industries. Metal oxides (MOx) intercalated into conducting polymers (CPs) offer a promising sensing approach due to their effective detection of biological molecules such as C-HSL. In this study, we synthesized and characterized two MOx/polyaniline-dodecyl benzene sulfonic acid (PANI-DBSA) nanocomposites, namely ZnO/PANI-DBSA and FeO/PANI-DBSA.
View Article and Find Full Text PDFThin-film nanocomposite (TFN) forward osmosis (FO) membranes have attracted significant attention due to their potential for solving global water scarcity problems. In this study, we investigate the impact of titanium oxide (TiO) and titanium oxide/reduced graphene (TiO/rGO) additions on the performance of TFN-FO membranes, specifically focusing on water flux and reverse salt diffusion. Membranes with varying concentrations of TiO and TiO/rGO were fabricated as interfacial polymerizing M-phenylenediamine (MPD) and benzenetricarbonyl tricholoride (TMC) monomers with TiO and its reduced graphene composites (TiO/rGO).
View Article and Find Full Text PDFBackground/aim: Restoration of gait mechanics after reconstruction have been associated with improved functional outcomes and increased longevity of the reconstruction. The goal of this study is to compare the gait mechanics of an allograft reconstruction of the distal femur to both metallic endoprosthetic reconstruction relative to normal control subjects.
Methods: Gait parameters were captured using motion capture system, and then analyzed and compared for patients with metallic endoprosthetic reconstructions, and patients with allograft reconstructions of the distal femur following resection of malignant bone tumor, with subjects having no history of musculoskeletal disorders serving as a control group.
Background And Objectives: Cardiovascular complications are common in liver transplant recipient. This study aims to evaluate functional and morphological myocardial changes in hepatitis C virus (HCV) patients with end-stage liver disease (ESLD) by cardiac magnetic resonance (CMR).
Methods: This cross-sectional study included 84 patients with HCV-related ESLD.