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المنتدى البحثي السادس للشباب 2024 [115 items ]
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أبحاث مركز جامعة قطر للعلماء الشباب [206 items ]
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Experimental analysis of free-standing and substrate-constrained Ga-doped ZnO nanostructured thermoelectric films
( Elsevier , 2024 , Article)Developing thermoelectric films without substrates—free-standing films—eliminates substrate-induced effects on performance and meets the flexibility requirements of emerging wearable thermoelectric applications. This study ... -
Development and validation of teacher artificial intelligence (AI) competence self-efficacy (TAICS) scale
( Springer Nature , 2024 , Article)Evaluating teacher AI competence levels and building effective, safe, and healthy learning environment are crucial steps in transitioning to AI-based education. Current established digital competence frameworks may indirectly ... -
An Impedance Humidity Sensor Based on CVD Grown WSe2 2D Films
( American Chemical Society , 2024 , Article)2D materials-based planar devices have been sought after for gas and humidity sensor applications owing to their highsensitivity due to their ultrathin nature and increased surface area. Herein, 2D WSe2 films-based planner ... -
Synergistic effect of concentration and annealing on structural, mechanical, and room-temperature thermoelectric properties of n-type Ga-doped ZnO films
( Elsevier , 2024 , Article)The development of Ga-doped Zinc Oxide (GZO) films from nontoxic, abundant elements using a cost-effective and scalable approach is crucial for the profitability and sustainability of thermoelectric applications. Challenges ... -
Focused review on factors affecting martensitic stainless steels and super martensitic stainless steel passive film in the oil and gas field
( Springer Science and Business Media Deutschland GmbH , 2024 , Article Review)Martensitic and super martensitic stainless steels are widely used in the oil and gas industry for general corrosion mitigation in the presence of sweet corrosion (CO2) and sour corrosion (H2S), providing a cost-effective ... -
High school teachers' perceptions of technology integration in instruction
( Emerald Publishing , 2024 , Article)Purpose: This exploratory research intends to comprehend the perspectives of high school teachers toward incorporating technology in instruction. Design/methodology/approach: Drawing upon Davis's technology acceptance model ... -
Efficient solar energy harvesting via thermally stable tungsten-based nanostructured solar thermophotovoltaic systems
( Elsevier , 2024 , Article)Electromagnetic radiations are a key energy source, which, by deploying bandgap-engineered devices, are directed onto PV cells to maximize their utilization. In this regard, the Solar Thermophotovoltaic (STPV) systems are ... -
DEVELOPING THE DETERMINANTS TO ASSESS THE AI LEARNER OUTCOMES
( IATED , 2024 , Conference Proceedings)Within the current educational milieu, incorporating Artificial Intelligence (AI) into secondary education is deemed imperative, serving as a requisite measure to equip students with fundamental aptitudes essential for ... -
α-Fe2O3/ZnO nanocomposite as an efficient photocatalyst for wastewater treatment and flexible electronic device applications
( Springer , 2024 , Article)In this work, we report the synthesis of α-Fe2O3, ZnO, and α-Fe2O3/ZnO nanomaterials by a simple sol-gel method for photocatalytic dye degradation and flexible electronic applications. X-ray diffraction results reveal that ... -
Author Correction: Stretchable Electrospun PVDF-HFP/Co-ZnO Nanofibers as Piezoelectric Nanogenerators (Scientific Reports, (2018), 8, 1, (754), 10.1038/s41598-017-19082-3)
( Nature Research , 2019 , Article)In Figure 5, Co-ZnO was incorrectly given as Ni-ZnO. In addition, the line on the graph for PVDF-HFP was omitted. The correct Figure 5 appears below as Figure 1. (Figure presented.). -
Tailored nanofiber composites for a flexible piezoelectric nanogenerator: Poly(vinylidene fluoride) with BaTiO3/NiFe2O4
( Elsevier , 2024 , Article)Owing to the depletion of fossil fuel energy and the pollution caused by chemical batteries, as well as the growing number of electronic devices and the Internet of Things (IoT), there is a greater demand for power devices ... -
Unveiling the redox electrochemistry of 1D, urchin-like vanadium sulfide electrodes for high-performance hybrid supercapacitors
( Elsevier , 2023 , Article)Exploring novel versatile electrode materials with outstanding electrochemical performance is the key to the development of advanced energy conversion and storage devices. In this work, we aim to construct new-fangled ... -
Current trends and prospects in catalytic upgrading of lignocellulosic biomass feedstock into ultrapure biofuels
( Elsevier , 2023 , Article)Eco-friendly renewable energy sources have recommended as fossil fuel alternatives in recent years to reduce environmental pollution and meet future energy demands in various sectors. As the largest source of renewable ... -
Flexible piezoelectric nanogenerator based on [P(VDF-HFP)]/ PANI-ZnS electrospun nanofibers for electrical energy harvesting
( Springer , 2021 , Article)Abstract: Over the past decade, piezoelectric nanogenerator have attracted much attention to harvest mechanical energy from abundant resources in nature. Here, the ZnS microspheres is prepared by hydrothermal method and ... -
Improvement of capacitive humidity sensors using tris(8-hydroxyquinoline) gallium (Gaq3) nanofibers as a dielectric layer
( Springer , 2020 , Article)In this research work, we improved the sensing response of the organic-based co-planar humidity sensors using tris(8-hydroxyquinoline) gallium (Gaq3) nanofibers as a dielectric material. The humidity sensor was fabricated ... -
A Meta-Analysis to Gauge the Effectiveness of STEM Informal Project-Based Learning: Investigating the Potential Moderator Variables
( Springer Science and Business Media B.V. , 2023 , Article Review)In recent decades, informal project-based learning (PjBL) for science, technology, engineering, and mathematics (STEM) education has gained immense significance. Though some meta-analytical studies have reported the ... -
A review of passivity breakdown on metal surfaces: influence of chloride- and sulfide-ion concentrations, temperature, and pH
( Springer Nature , 2021 , Article Review)Metals, including austenitic steels and alloys, have been extensively applied in industrial and engineering applications. Passive films on metal surfaces are very important for corrosion protection. However, localized ... -
Investigating the individual interests of undergraduate students in STEM disciplines
( Frontiers Media SA , 2024 , Article)Despite massive investments in the education sector to empower youth in Qatar, a vital concern remains to retain students in science, technology, engineering, and mathematics (STEM) disciplines at the undergraduate level. ... -
A STEM model for engaging students in environmental sustainability programs through a problem-solving approach
( Routledge , 2023 , Article)This study exemplifies a STEM model for engaging students in environmental sustainability programs through a problem-solving approach. The study employed a mixed-method approach incorporating 346 elementary students. The ... -
Influence of polyolefin modified by Y2O3 as protective coatings against carbon steel corrosion into 3.5% NaCl media
( Springer , 2023 , Article)In this research work, we have studied the impact of Yttrium nanoparticles loaded with corrosion inhibitors dodecylamine (DOC) incorporated in polyolefin for the corrosion protection of steel. The surface analysis of pure ...
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