Browsing Research Units by Title
Now showing items 1340-1359 of 4830
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Effect of short fibres in the mechanical properties of geopolymer mortar containing oil-contaminated sand
( MDPI , 2021 , Article)Sand contaminated with crude oil is becoming a major environmental issue around the world, while at the same time, fly ash generated by coal-fired power stations is having a detrimental effect on the environment. Previous ... -
Effect of silicon nitride and graphene nanoplatelets on the properties of aluminum metal matrix composites
( MDPI AG , 2021 , Article)This research work aims at investigating the influence of a fixed content of silicon nitride (Si3N4) and varied contents of graphene nanoplatelets (GNPs) on the physical (density, structural, morphological) and mechanical ... -
Effect of Silicon Nitride and Graphene Nanoplatelets on the Properties of Aluminum Metal Matrix Composites
( Qatar University Press , 2021 , Poster)This research work aims at investigating the influence of a fixed content of silicon nitride (Si3N4) and varied contents of graphene nanoplatelets (GNPs) on the physical and mechanical properties of Al-Si3N4-GNPs composites. ... -
Effect of sintering temperature on the structural and magnetic properties of MgFe2O4 ceramics prepared by spark plasma sintering
( Elsevier Ltd , 2016 , Article)Spark plasma sintering (SPS) is a powerful technique to produce fine grain dense ferrite at low temperature. This work was undertaken to study the effect of sintering temperature on the densification, microstructures and ... -
Effect of strain on gas adsorption in tight gas carbonates: A DFT study
( Elsevier B.V. , 2021 , Article)The geometrical properties of the reservoir rocks are usually affected by natural thermodynamics or environmental changes. These factors may modify the distribution and the amount of gas in place in the reservoir. To address ... -
Effect of sulfonated poly (ether ether ketone) on the sensitivity of polyvinylidene fluoride-based resistive humidity sensors
( Elsevier Ltd , 2020 , Article)We have investigated the effect of sulfonated poly (ether ether ketone) (SPEEK) on the thermal stability, hydrophilicity, and sensitivity of polyvinylidene fluoride (PVDF) films based resistive humidity sensors. The blended ... -
Effect of surface morphology on methane interaction with calcite: a DFT study
( Royal Society of Chemistry , 2020 , Article)Natural gas, consisting primarily of methane, is found in carbonate reservoirs of which calcite is major component. However, the complexity and heterogeneity of carbonate reservoirs remain a major challenge in estimating ... -
The effect of surface-modified gold nanorods on the early stage of embryonic development and angiogenesis: Insight into the molecular pathways
( MDPI , 2021 , Article)Gold nanorods have been implicated in several biomedical applications. Herein, the effect of two surface-modified gold nanorods on the early stages of embryogenesis and angiogenesis was investigated using avian embryos at ... -
Effect of surfactant and electron treatment on the electrical and thermal conductivity as well as thermal and mechanical properties of ehylene vinyl acetate/expanded graphite composites
( Wiley Periodicals, Inc , 2015 , Article)This study presents an investigation of the electrical and thermal conductivities of composites based on an ethylene vinyl acetate (EVA) copolymer matrix and nanostructured expanded graphite (EG). To improve the EG dispersion ... -
Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites
( Springer , 2015 , Article)The effects of surfactant and electron beam (EB) radiation treatment on the morphology and properties of polypropylene (PP)/expanded graphite (EG) composites were investigated. Surfactant treatment and sonication of EG ... -
Effect of temperature and fluid speed on the corrosion behavior of carbon steel pipeline in Qatari oilfield produced water
( Elsevier B.V. , 2018 , Article)Metals integrity, such as carbon steel used in pipeline network can be seriously damaged by produced water causing serious corrosion problems. This can result in significant threats to safe operation of the oilfield ... -
Effect of temperature and sunlight on the leachability potential of BPA and phthalates from plastic litter under marine conditions
( Elsevier , 2023 , Article)This study investigates the leaching potential of several additives embedded in six different plastic types when exposed to extreme simulated marine conditions for 140 days. The findings achieved herein contribute to a ... -
Effect of Temperature on the Corrosion Behavior of API X120 Pipeline Steel in H2S Environment
( Springer New York LLC , 2017 , Article) -
The effect of the Covid-19 on sharing economy activities
( Elsevier Ltd , 2021 , Article)Activities within the sharing economy (SE) are in a precarious situation due to the Covid-19 pandemic. Even though the SE is considered a disruptive phenomenon, especially in the accommodation and transport sectors, the ... -
Effect of the degree of template removal from mesoporous silicate materials on their adsorption of heavy oil from aqueous solution
( Springer VerlagHigher Education Press , 2014 , Article)The key aim of this study is to evaluate the adsorption of heavy oil from aqueous solutions with different oil contents over mesoporous silicate materials having different surfactant template contents. The mesoporous ... -
Effect of the induced dielectrophoretic force on harvesting of marine microalgae (Tetraselmis sp.) in electrocoagulation
( Elsevier , 2020 , Article)In this study, a new electrocoagulation electrode configuration has been investigated in order to induce dielectrophoretic (DEP) force for the enhanced harvesting of marine microalgae (Tetraselmis sp.). Asymmetrical aluminum ... -
Effect of the length of silicon nano-dot/wire on band gap
( Institute of Electrical and Electronics Engineers Inc. (IEEE) , 2014 , Conference Paper)We will report on the role of the length of silicon nanowire (SNW) in determining the band gap of a structure. We find that the band gap decreases with SNW length for the same diameter and approaches the band gap for an ... -
Effect of the modified hybrid particle on the corrosion inhibition performance of polyolefin based coatings for carbon steel
( Elsevier B.V. , 2022 , Article)This work reports the corrosion inhibition performance of modified hybrid particles reinforced into polyolefin matrix. The cerium oxide coated zinc oxide hybrid particles (CeO2@ZnO) were synthesized via a chemical precipitation ... -
Effect of the support on physicochemical properties and catalytic performance of cobalt based nano-catalysts in Fischer-Tropsch reaction
( Elsevier Ltd , 2017 , Article)In this paper, comparative investigations of the effects of CNTs and ?-Al2O3 on the physicochemical properties and catalytic performances of Co based nano-catalyst during FTS have been presented. Catalysts were prepared ... -
Effect of the temperature on the passivity of the modified martensitic stainless steels
( Taylor and Francis Group , 2022 , Article)The limits and nature of the passive behavior exhibited by modified martensitic stainless steels (MMSS) is studied in brine solutions at different temperatures using electrochemical methods and the point defect model (PDM), ...