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Recent Submissions
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التحديات في تدريس الرياضيات وطرق التغلب عليها وجهات نظر معلمات الطفولة المبكرة
( Qatar University Press , 2023 , Article)هدفت هذه الدراسة إلى الكشف عن التحديات التي تواجهها معلمات الطفولة المبكرة في تدريس الرياضيات وطرق تجاوزها من وجهة نظرهن. ولتحقيق هدف الدراسة، استخدم الباحثون المنهج الوصفي المختلط (كمي ونوعي)؛ فعُقدت مقابلات مع (53) معلمة ... -
حكم تداول أسهم الشركات المختلطة في ضوء معيار الأسهم الصادر عن الهيئة الشرعية لاتحاد البنوك التشاركية التركية
( Qatar University Press , 2022 , Article)أهداف البحث: يهدف البحث إلى دراسة الضوابط التي وضعها معيار الأسهم الصادر عن الهيئة الشرعية في اتحاد البنوك التشاركية التركية؛ كشرط لجواز تداول أسهم الشركات المختلطة. منهج البحث: اعتمد البحث المنهج التحليلي النقدي؛ إذ ... -
Towards Gas Hydrate-Free Pipelines: A Comprehensive Review of Gas Hydrate Inhibition Techniques
( MDPI , 2022 , Article Review)Gas hydrate blockage is a major issue that the production and transportation processes in the oil/gas industry faces. The formation of gas hydrates in pipelines results in significant financial losses and serious safety ... -
Recent advances in electroless-plated Ni-P and its composites for erosion and corrosion applications: a review
( Springer Nature , 2018 , Article Review)The metallic coating of surfaces plays a vital role in the protection of most industrial applications. Coatings can be carried through various routes (e.g., mechanical and electrochemical plating techniques). Electroless ... -
Role of metal oxide nanofibers in water purification
( Elsevier , 2021 , Book chapter)Water treatment through nanomaterials and nanocomposites is a booming research area, since water resources are of prime importance for human sustainability. Having high permeability, optimum pore size, and specific surface ... -
Synthesis and Characterization of Scratch-Resistant Ni-P-Ti-Based Composite Coating
( Taylor and Francis Inc. , 2019 , Article)In order to improve the toughness of Ni-P coatings, Ti particles were introduced into the plating solution to produce a Ni-P-Ti composite coating (on API-X100 steel), which was subsequently annealed to form superelastic ... -
Long-Term Treatment of Highly Saline Brine in a Direct Contact Membrane Distillation (DCMD) Pilot Unit Using Polyethylene Membranes
( MDPI , 2022 , Article)Membrane distillation (MD) is an attractive separation process for wastewater treatment and desalination. There are continuing challenges in implementing MD technologies at a large industrial scale. This work attempts to ... -
Influence of combined natural deep eutectic solvent and polyacrylamide on the flocculation and rheological behaviors of bentonite dispersion
( Elsevier , 2022 , Article)The influence of hybrid coagulation/ flocculation systems on the degree of flocculation and rheological behavior of highly stable bentonite suspension has been investigated throughout this study. Natural deep eutectic ... -
Magnetic nanoparticles draw solution for forward osmosis: Current status and future challenges in wastewater treatment
( Elsevier , 2022 , Article)Forward osmosis is considered as the least energy intensive membrane process since it operates based on the osmotic pressure gradient. However, it is still considered as immature technology mainly due to the elevated cost ... -
Morphology, Nucleation, and Isothermal Crystallization Kinetics of Poly(ε-caprolactone) Mixed with a Polycarbonate/MWCNTs Masterbatch
( MDPI AG , 2017 , Article)In this study, nanocomposites were prepared by melt blending poly (ε-caprolactone) (PCL) with a (polycarbonate (PC)/multi-wall carbon nanotubes (MWCNTs)) masterbatch in a twin-screw extruder. The nanocomposites contained ... -
Synthesis, characterization, and application of novel Ni-P-carbon nitride nanocomposites
( MDPI AG , 2018 , Article)Dispersion of 2D carbon nitride (C3N4) nanosheets into a nickel phosphorous (NiP) matrix was successfully achieved by ultrasonication during the electroless plating of NiP from an acidic bath. The morphology and thickness, ... -
Self-Healing Silicones for Outdoor High Voltage Insulation: Mechanism, Applications and Measurements
( MDPI , 2022 , Article Review)This paper discusses the state of the art in the application of self-healing silicone-based materials for outdoor high-voltage insulation. Both the dynamic behavior of the dimethyl side groups of silicone rubber and the ... -
MXene (Ti3 C2 Tx )/Cellulose Acetate Mixed-Matrix Membrane Enhances Fouling Resistance and Rejection in the Crossflow Filtration Process
( MDPI , 2022 , Article)Obstacles in the membrane-based separation field are mainly related to membrane fouling. This study involved the synthesis and utilization of covalently crosslinked MXene/cellulose acetate mixed matrix membranes with MXene ... -
Secondary chain motion and mechanical properties of γ-irradiated-regenerated cellulose films
( Wiley-VCH Verlag , 2017 , Article)Regenerated cellulose films prepared using NaOH/urea solvent system were exposed to different doses of γ-radiation, ranging from 5 to 50 kGy to modify their properties. Change in relative crystallinity as a function of ... -
Effect of plasma treatment on accelerated pla degradation
( BME-PT and GTE , 2021 , Article)Poly(lactic acid) (PLA) has been found to be important in various applications, such as in the medical, pharma-ceutical, and packaging industries. However, the long-term associated degradation process of PLA is a limiting ... -
A precious-metal-free Fe-intercalated carbon nitride porous-network with enhanced activity for the oxygen reduction reaction and methanol-tolerant oxygen reduction reaction
( Royal Society of Chemistry , 2020 , Article)The economical cost of the catalyst material has remained a challenging task in traditional fuel cells (FCs) and in direct methanol fuel cells (DMFCs). However, replacement of noble metals with precious metal-free materials ... -
Continuous Nanoparticle Patterning Strategy in Layer-Structured Nanocomposite Fibers
( John Wiley and Sons Inc , 2022 , Article)Anisotropic polymer/nanoparticle composites display unique mechanical, thermal, electrical, and optical properties depending on confirmation and configuration control of the composing elements. Processes, such as vapor ... -
Behavior of artificially corroded RC beams strengthened with CFRP and hybrid CFRP-GFRP laminates
( Elsevier , 2022 , Article)Steel corrosion is a major degradation factor for the reinforced concrete (RC) infrastructure and necessitates a costly repair after short service life. Predicting the strength of corroded and retrofitted structural elements ... -
Impact of corona and radio-frequency plasma treatment on the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)
( BME-PT and GTE , 2022 , Article)Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a polyester, produced naturally by microorganisms, with excellent biocompatibility. Corona and radio-frequency (RF) plasma treatment were applied in order to improve ... -
Effect of Voltage Level on the Performance of Silicone Rubber in the Inclined Plane Tracking and Erosion Test
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)This paper investigates the effect of the test voltage level on the performance of silicone rubber in inclined plane tracking and erosion test. Silicone rubber composites, filled with either alumina tri-hydrate or ground ...
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