Browsing Civil & Architectural Engineering by Title
Now showing items 249-268 of 678
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Effects of CH4-CO2 replacement in hydrate-bearing sediments on S-wave velocity and electrical resistivity
( Elsevier , 2020 , Article)CH4-CO2 replacement has been considered as a method for methane production from hydrate-bearing sediments to maintain sediment stability. Sediment stability has been studied at both the particle scale and mesoscale. However, ... -
Effects of dissolved organic phase composition and salinity on the engineered sulfate application in a flow-through system
( Springer , 2020 , Article)Engineered sulfate application has been proposed as an effective remedy to enhance the rate-limited biodegradation of petroleum-hydrocarbon-contaminated subsurface environments, but the effects of dissolved organic phase ... -
Effects of Fine-Grained Particles' Migration and Clogging in Porous Media on Gas Production from Hydrate-Bearing Sediments
( Hindawi Limited , 2019 , Article)The migration of fine particles in porous media has been studied for different applications, including gas production from hydrate-bearing sediments. The clogging behavior of fine particles is affected by fine particle-pore ... -
Effects of soaking process on CH4-CO2 replacement efficiency for hydrate-bearing sediments
( Elsevier , 2021 , Article)CH4-CO2 replacement method has the advantages of sequestering carbon dioxide and sediment stability compared to other methods such as depressurization and thermal stimulation. However, the production efficiency using CH4-CO2 ... -
Effects of Using Seawater and Recycled Coarse Aggregates on Plain Concrete Characteristics
( Qatar Univesrity Press , 2020 , Conference Paper)Using seawater and/or recycled coarse aggregates (RCA) for concrete mixing is deemed advantageous from a sustainability perspective. This paper reports on the results of an experimental study on fresh and hardened properties ... -
Efficacy of NSM hybrid FRP strips for shear strengthening of rc deep beams
( University of Cantabria - Building Technology R&D Group , 2020 , Conference Paper)This paper presents an experimental study on the efficacy of near-surface mounted (NSM) hybrid carbon/glass fiber reinforced polymer (FRP) strips for the strengthening of shear-critical reinforced concrete (RC) deep beams. ... -
Efficient extraction of lipids from microalgal biomass for the production of biofuels using low-cost protic ionic solvents
( Elsevier , 2023 , Article)The valorization of lipids available in microalgal biomass supports the indispensable transition from fossil fuels to renewable energy systems such as biofuels. Ionic liquids have been long investigated for the effective ... -
Efficient Turbidity Removal Using a New Gel Filtration Process
( Qatar University Press , 2023 , Conference Paper)The removal of turbidity is a prime objective in the treatment of seawater, especially in the production of potable water. The water turbidity exists because of the colloidal particles or large-weight molecules that remain ... -
Electrochemical behavior of mild and corrosion resistant concrete reinforcing steels
( Elsevier , 2020 , Article)An experimental study is carried out in this paper to evaluate the corrosion performance of mild steel reinforcing bars (MS), high strength steel reinforcing bars (HS), epoxy-coated steel reinforcing bars (EC), and ... -
Employing biomimicry in Urban metamorphosis seeking for sustainability: Case studies
( Universitat Politecnica de Catalunya , 2019 , Article)Objective The current study has aimed to develop the framework of biomimicry involvement in urban metamorphosis for sustainability. This research has engaged four objectives to achieve the aim. Objective one is to explore ... -
Enabling Open Innovation in Digital Startups through the Incubation Program-A Case of Qatar
( MDPI , 2022 , Article)Researchers have studied open innovation by focusing primarily on big organizations. With digitization, the adoption of open innovation has become widespread, as there is broader access to cheaper and better information ... -
Energy harvesting from railway vibrations - A numerical study based on beam-on-elastic-foundation under quasi-static loading
( National Technical University of Athens , 2021 , Conference Paper)The objective of this paper is to investigate energy harvesting of train-induced rail vibrations and to provide a comparison between various feasible harvesting locations based on the expected electrical power output. ... -
Engineering instructors' professional agency development and identity renegotiation through engaging in pedagogical change towards PBL
( Taylor and Francis Ltd. , 2021 , Article)This qualitative longitudinal study explored three engineering instructors' professional agency in implementing project-based learning (PBL), including multiple sets of data (18 interviews, observations, and written ... -
Engineering students' conceptions of collaboration, group-based strategy use, and perceptions of assessment in PBL: A case study in Qatar
( Tempus Publications , 2020 , Article Review)This study has investigated the natures of collaboration, group-based strategy use, and perception of assessment, as well as interactions among these aspects, by examining group performance in engineering students' first ... -
Enhanced treatment of petroleum refinery wastewater by short-term applied voltage in single chamber microbial fuel cell
( Elsevier Ltd , 2018 , Article)Electrochemically active anodic biofilm that has adapted under mild applied potentials in the range 100–500 mV was evaluated for its improved bioelectrogenesis and bioelectrochemical treatment of petroleum refinery wastewater ... -
Enhanced treatment of petroleum refinery wastewater by short-term applied voltage in single chamber microbial fuel cell
( Elsevier , 2018 , Article)Electrochemically active anodic biofilm that has adapted under mild applied potentials in the range 100-500 mV was evaluated for its improved bioelectrogenesis and bioelectrochemical treatment of petroleum refinery wastewater ... -
Enhancement of biogas production from agricultural wastes via pre-treatment with advanced oxidation processes
( Elsevier Ltd , 2019 , Article)The effects of advanced oxidation processes (AOPs) including Fenton, ozone, and ozone combined with Fe(II) and H2O2 on disintegration/solubilization of three mixed agricultural solid wastes and subsequent anaerobic digestion ... -
Enhancement of multi-media filter performance using talc as a new filter aid material: Mechanistic study
( Elsevier , 2015 , Article)The potential of using a new filter aid, namely, talc to enhance the removal of particles in a multi-media filter was investigated. In the case of the nano-scale particles the running time was enhanced by 300. min at a ... -
Enhancement of Naphthalene Biodegradation by Sulfate Application in Brackish Subsurface Systems
( Qatar Univesrity Press , 2020 , Conference Paper)Anaerobic biodegradation is the most dominant mechanism in the petroleum hydrocarbon contaminated subsurface systems. Due to depletion of terminal electron acceptors such as sulfate, anaerobic degradation of organic ... -
Enhancement of Naphthalene Degradation by a Sequential Sulfate Injection Scenario in a (Semi)-Arid Coastal Soil: a Flow-Through Reactor Experiment
( Springer , 2020 , Article)Engineered sulfate injection has been introduced as an effective technology to enhance the remediation of soil and groundwater contaminated by petroleum hydrocarbons. While some studies indicate that sulfate injection is ...