Mohamed E. Khalifa
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View article: Polyurethane/MXene Electrodes for Flexible Supercapacitor Applications
Polyurethane/MXene Electrodes for Flexible Supercapacitor Applications Open
Conventional supercapacitors have encountered application bottlenecks due to their poor flexibility. In this context, a flexible polyurethane (PU)/MXene electrode is constructed by directly depositing MXene on PU substrate that is prepared…
View article: Comparative Photo‐Induced Aging of Poly(Butylene Adipate‐co‐Terephthalate) and Polystyrene Microplastics and their Divergent Affinities for Tetracycline in Aquatic Environments
Comparative Photo‐Induced Aging of Poly(Butylene Adipate‐co‐Terephthalate) and Polystyrene Microplastics and their Divergent Affinities for Tetracycline in Aquatic Environments Open
Microplastics (MPs) experience photo‐induced surface modification in sunlit waters, yet the implications for contaminant binding differ fundamentally for biodegradable and conventional MPs. To simulate submerged aging, biodegradable poly (…
View article: GSH/pH-Responsive Chitosan–PLA Hybrid Nanosystems for Targeted Ledipasvir Delivery to HepG2 Cells: Controlled Release, Improved Selectivity, DNA Interaction, Electrochemical and Stopped-Flow Kinetics Analyses
GSH/pH-Responsive Chitosan–PLA Hybrid Nanosystems for Targeted Ledipasvir Delivery to HepG2 Cells: Controlled Release, Improved Selectivity, DNA Interaction, Electrochemical and Stopped-Flow Kinetics Analyses Open
This study aimed to design dual-responsive chitosan–polylactic acid nanosystems (PLA@CS NPs) for controlled and targeted ledipasvir (LED) delivery to HepG2 liver cancer cells, thereby reducing the systemic toxicity and improving the therap…
View article: Investigation of the photocatalytic potential of CuFe <sub>2</sub> O <sub>4</sub> embedded on a g-C <sub>3</sub> N <sub>4</sub> nanosheet toward malachite green (MG) dye
Investigation of the photocatalytic potential of CuFe <sub>2</sub> O <sub>4</sub> embedded on a g-C <sub>3</sub> N <sub>4</sub> nanosheet toward malachite green (MG) dye Open
This study produced a hetero-structured nanocomposite consisting of CuFe2O4 (CFO) supported on g-C3N4 (g-CN) with high photocatalytic properties through hydrothermal technique. Various analytic methods were operated to investigate the phys…
View article: Rate-dependent mechanical behavior of dual-phase structure of Sn interconnect materials
Rate-dependent mechanical behavior of dual-phase structure of Sn interconnect materials Open
This study systematically investigates the effects of strain rate (from 1.67 × 10⁻5 to 10⁻1 s⁻1) on the tensile deformation and fracture behavior of β-Sn-based dual-phase alloys including Sn5Sb, Sn25Sb, Sn37Pb, and Sn58Bi. Both pure Sn and…
View article: Healthcare systems and health economics in GCC countries: informing decision-makers from the perspective of the Gulf health economics association
Healthcare systems and health economics in GCC countries: informing decision-makers from the perspective of the Gulf health economics association Open
Following the discovery of oil, citizens of the Cooperation Council for the Arab States of the Gulf (GCC), which includes Bahrain, Kuwait, Qatar, Oman, the United Arab Emirates, and Saudi Arabia, have enjoyed the benefits of universal heal…
View article: First-Principles Investigation of Diverse Properties of X2CaTa2O7 (X = Li, Na, K, and Rb) Ruddlesden–Popper Compounds for Photovoltaic Applications
First-Principles Investigation of Diverse Properties of X2CaTa2O7 (X = Li, Na, K, and Rb) Ruddlesden–Popper Compounds for Photovoltaic Applications Open
For the first time, we explored the optical, electronic, mechanical, and structural properties of the Ruddlesden–Popper phase family member X2CaTa2O7 (X = Li, Na, K, and Rb) by using density functional theory (DFT) with the Perdew–Burke–Er…
View article: Morphotropic Phase Boundary Region 0.7BiFeO3-0.3BaTiO3 Ceramics Exploration Under the Influence of the Incorporated Sn-Ions for Piezo/Ferro Applications
Morphotropic Phase Boundary Region 0.7BiFeO3-0.3BaTiO3 Ceramics Exploration Under the Influence of the Incorporated Sn-Ions for Piezo/Ferro Applications Open
In the field of piezoelectric applications, perovskite-based multifunctional composite ceramics are widely explored. The morphotropic phase boundary (MPB) regions, where dual structural phases coexist, play a crucial role in boosting the f…
View article: Abnormal Behavior Detection in Surveillance Systems Using a Hybrid EfficientNet-Transformer Model
Abnormal Behavior Detection in Surveillance Systems Using a Hybrid EfficientNet-Transformer Model Open
Anomaly detection in video surveillance is vital for public safety, but challenges arise from the unpredictability of abnormal behaviors and large-scale systems. We propose a hybrid architecture combining EfficientNetV2S for efficient feat…
View article: Effect of Ca, Ba, Be, Mg, and Sr Substitution on Electronic and Optical Properties of XNb2Bi2O9 for Energy Conversion Application Using Generalized Gradient Approximation–Perdew–Burke–Ernzerhof
Effect of Ca, Ba, Be, Mg, and Sr Substitution on Electronic and Optical Properties of XNb2Bi2O9 for Energy Conversion Application Using Generalized Gradient Approximation–Perdew–Burke–Ernzerhof Open
Bismuth layered structure ferroelectrics (BLSFs), also known as Aurivillius phase materials, are ideal for energy-efficient applications, particularly for solar cells. This work reports the first comprehensive detailed theoretical study on…
View article: On the microstructure and hardness evaluation of aluminum metal matrix composites reinforced with in situ (Fe-Al-Cr-Ni) intermetallic compounds
On the microstructure and hardness evaluation of aluminum metal matrix composites reinforced with in situ (Fe-Al-Cr-Ni) intermetallic compounds Open
In this study, Aluminum metal matrix composites (AMMCs) were produced through stir casting technique, using in situ intermetallic compounds as reinforcement. The in situ synthesis of these reinforcement phases involved the addition of stai…
View article: Effect of Titanium Tetrafluoride on Degree of Conversion and Bond Strength of an Orthodontic Primer
Effect of Titanium Tetrafluoride on Degree of Conversion and Bond Strength of an Orthodontic Primer Open
Objective: To evaluate the degree of conversion (DC), and orthodontic bracket shear bond strength (SBS) after the incorporation of 3 wt.%TiF4 into an orthodontic primer.Materials and Methods: According to the concentration of TiF4 within t…
View article: Speed and torque control of pneumatic motors using controlled pulsating flow
Speed and torque control of pneumatic motors using controlled pulsating flow Open
Pneumatic motors have several advantages and have many robotics and automation applications. The importance of the study is that it is a cheap and possible way to apply it to the fixed displacement pneumatic motors with simple directional …
View article: Synthesis of Cyano-Benzylidene Xanthene Synthons Using a Diprotic Brønsted Acid Catalyst, and Their Application as Efficient Inhibitors of Aluminum Corrosion in Alkaline Solutions
Synthesis of Cyano-Benzylidene Xanthene Synthons Using a Diprotic Brønsted Acid Catalyst, and Their Application as Efficient Inhibitors of Aluminum Corrosion in Alkaline Solutions Open
Novel cyano-benzylidene xanthene derivatives were synthesized using one-pot and condensation reactions. A diprotic Brønsted acid (i.e., oxalic acid) was used as an effective catalyst for the promotion of the synthesis process of the new st…
View article: Smart textiles immobilized with hydrazone probe for colorimetric recognition of bacteria
Smart textiles immobilized with hydrazone probe for colorimetric recognition of bacteria Open
Increasing the incidence of infectious diseases and antibiotic-resistant bacteria results in threats to both economy and man health. Cotton textiles are characterized by cellulosic fibrous morphology with high surface area, flexibility, bi…
View article: Reduced Graphene Oxide-Modified Carbon Paste Sensors for Sensitive Adsorptive Voltammetric Determination of Oxfendazole
Reduced Graphene Oxide-Modified Carbon Paste Sensors for Sensitive Adsorptive Voltammetric Determination of Oxfendazole Open
Herein, a novel carbon paste electrode incorporated with reduced graphene oxide (rGO) was electrochemically characterized for sensitive adsorptive voltammetric determination of oxfendazole (OXF) in veterinary formulations and spiked milk s…
View article: Fluid and Structure Analysis of Wind Turbine Blade with Winglet
Fluid and Structure Analysis of Wind Turbine Blade with Winglet Open
One of the succeeded methods to enhance the performance of horizontal axis wind turbine (HAWT) is an attaching a winglet to the blades tip. The current paper study the effect of four key parameters that are used to describe the winglet on …
View article: Synthesis of New Binary Thiazole-Based Heterocycles and Their Molecular Docking Study as COVID-19 Main Protease (Mpro) Inhibitors
Synthesis of New Binary Thiazole-Based Heterocycles and Their Molecular Docking Study as COVID-19 Main Protease (Mpro) Inhibitors Open
Isolated polynuclear binary heterocyclic compounds containing thiazole building block combined with benzofuran, pyrrole, thiazole, or thiophene via carboxamide and/or secondary amine as a junction are presented. The synthetic strategy of t…
View article: Design, Molecular Modeling and Synthesis of Metal-Free Sensitizers of Thieno Pyridine Dyes as Light-Harvesting Materials with Efficiency Improvement Using Plasmonic Nanoparticles
Design, Molecular Modeling and Synthesis of Metal-Free Sensitizers of Thieno Pyridine Dyes as Light-Harvesting Materials with Efficiency Improvement Using Plasmonic Nanoparticles Open
Considering the thiophene unit as an electron-rich heterocycle, it is investigated with the aim of elucidating its potential efficiency for solar cell application. With the introduction of active substituents such as COOEt, CONH2 and CN in…
View article: Synthesis, Antibacterial, and Anti HepG2 Cell Line Human Hepatocyte Carcinoma Activity of Some New Potentially Benzimidazole-5-(Aryldiazenyl)Thiazole Derivatives
Synthesis, Antibacterial, and Anti HepG2 Cell Line Human Hepatocyte Carcinoma Activity of Some New Potentially Benzimidazole-5-(Aryldiazenyl)Thiazole Derivatives Open
The paper describes the synthesis and biological evaluation of some new benzimidazole derivatives as potent clinical drugs that are useful in the treatment of some microbial infections and tumor inhibition. The starting compound 2-(bromome…
View article: Recent Developments and Biological Activities of 2-Aminothiazole Derivatives
Recent Developments and Biological Activities of 2-Aminothiazole Derivatives Open
Aminothiazole nuclei and their various derivatives have been long used as precursors for the synthesis of biologically active molecules. As a typical heterocyclic amine, 2-aminothiazole is a cornerstone for the synthesis of many compounds,…
View article: Biological screening and assessment of certain substituted monoazo heterocycles containing sulphur and / or nitrogen and their seleno like moieties
Biological screening and assessment of certain substituted monoazo heterocycles containing sulphur and / or nitrogen and their seleno like moieties Open
The monoazo substituted five membered heterocycles, along with their seleno like moieties are still of interest in organic chemistry due to their medicinal and valuable applications. In continuation of our interest in the study of heterocy…
View article: Synthesis of Novel Arylazothiazolyl-thiophene Dyes for Solar Cell and Nonlinear Optical Materials
Synthesis of Novel Arylazothiazolyl-thiophene Dyes for Solar Cell and Nonlinear Optical Materials Open
Synthesis and investigation of new donor-acceptor conjugated N-(5-arylazothiazol-2-yl)-2-aminothiophene derivatives with the aim to elucidate the contribution of their interaction with solvent molecules upon intramolecular charge transfer …