تصفح Civil and Environmental Engineering حسب العنوان
السجلات المعروضة 399 -- 418 من 779
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Grouping minimum REV of porosity and tortuosity based on descriptors of sand grains
( European Association of Geoscientists and Engineers, EAGE , 2019 , Conference Paper)In sandy reservoirs, selecting a representative elementary volume (REV) for the pore scale, is essential for predictive upscaling toward the reservoir scale. The porosity and tortuosity of a sand media are used for REV ... -
Harvesting of Chlorella sp. microalgae by dielectrophoretic force using titanium dioxide (TiO2) insulated electrodes
( Elsevier , 2022 , Article)The harvesting of microalgae using conventional technologies suffers from biomass contamination, high energy consumption and long processing time. In this study, titanium dioxide insulated stainless steel electrodes were ... -
Hierarchy based information requirements for sustainable operations of buildings in Qatar
( Elsevier , 2017 , Article)Information flows in construction projects are generally focused on the needs of the design and construction phases. This creates disruption of workflows across the project stages and in particular with the information ... -
High and Ultra-high Performance Concretes: A Solution to Reinforced Concrete Durability under Harsh Climate of Arabian Gulf
( Qatar Univesrity Press , 2020 , Conference Paper)Reinforced concrete (RC) infrastructure in the Arabian Gulf region deteriorates under severe environmental conditions after only short service life. To overcome this problem, it is imperative to employ high-quality concretes ... -
How Can Collaborative Circular Economy Practices in Modular Construction Help Fédération Internationale de Football Association World Cup Qatar 2022 to Achieve Its Quest for Sustainable Development and Ecological Systems?
( Frontiers , 2021 , Article)Embarking on the World Cup journey with circular collaborative strategies can positively impact the environment and socioeconomic outcomes to prosper development at the center of sustainability. World Cup mega-events are ... -
Human factors and road safety in the 2nd international traffic safety conference
( Taylor & Francis , 2023 , Other)This special issue presents selected articles submitted to the 2nd International Traffic Safety Conference 2023, Doha, (Qatar). More than 150 papers were submitted and they were peer-reviewed. Only 16 papers were highly ... -
Hybrid NSE/EB technique for shear strengthening of reinforced concrete beams using FRCM: Experimental study
( Elsevier Ltd , 2018 , Article)The externally bonded (EB) fabric reinforced cementitious matrix (FRCM) has successfully been used as a structural strengthening for various applications including flexural and shear strengthening of reinforced concrete ... -
Hybrid Split Hopkinson Pressure Bar to Identify Impulse-dependent Wave Characteristics of Viscoelastic Phononic Crystals
( Springer New York LLC , 2019 , Article)There has recently been a rising interest in the nonlinear wave transmission behavior of phononic crystals. However, experimental studies focusing on the nonlinear wave transmission behavior of phononic crystals have been ... -
Hydrate surface area measurements during dissociation using dynamic 3d synchrotron computed tomography
( European Association of Geoscientists and Engineers, EAGE , 2019 , Conference Paper)Availability of natural hydrates and ongoing rise in demand for energy, motivated researchers to consider hydrates as a potential energy source. Prior to gas production operations from hydrate-bearing sediments, hydrate ... -
Hydration, Pore Solution, and Porosity of Cementitious Pastes Made with Seawater
( American Society of Civil Engineers (ASCE) , 2019 , Article)Unreinforced concrete or concrete reinforced with noncorrosive reinforcement could potentially be mixed with seawater in locations where potable water is scarce. A fundamental understanding of the properties of concrete ... -
Hydration, strength, and shrinkage of cementitious materials mixed with simulated desalination brine
( ASTM International , 2019 , Article)The process of desalination results in the production of a hypersaline waste by-product known as reject brine. In some locations, this reject brine is dumped back into the ocean, which has potentially detrimental effects ... -
Identifying the relationship between intention to use flat-rate public transport and trip frequency by a discrete-continuous model
( Springer Nature , 2023 , Article)Public transport fare is a central feature of transit operations and is a key indicator to reflect transport demand. Yet, relatively little is known about how fare influences on ridership dynamics, including for which types ... -
Impact of aeration rate and dielectrophoretic force on fouling suppression in submerged membrane bioreactors
( Elsevier B.V. , 2019 , Article)Membrane bioreactors (MBRs) present a unique opportunity in waste water treatment by combining the activated sludge process with membrane filtration. Although MBRs require less area, produce less volume of sludge and have ... -
Impact of Aging on the Microstructure of Asphalt Binder Modified with Antioxidant Additives and Copolymers
( Chinese Society of Pavement Engineering , 2023 , Article)The effect of long-term aging on asphalt binders mixed with antioxidant additives and copolymers demonstrated potential for retarding oxidative aging at the nanoscale based on atomic force microscopy (AFM) characterization. ... -
The impact of cognitive load on a lane change task (LCT) among male autistic individuals: A driving simulator study
( Elsevier , 2024 , Article)This study investigated the impact of cognitive load on driving among autistic individuals with the use of an adapted, driving simulator-based, Lane Change Task (LCT). A secondary task was used to induce increasing verbal ... -
Impact of Draw Solution Concentration on Forward Osmosis Process: A Simulation Study
( Qatar Univesrity Press , 2020 , Conference Paper)In this study, a simulation model was used to evaluate the performance of forward osmosis process. A solution of low salinity was used as the feed solution in forward osmosis to dilute saline solution (i.e. draw solution) ... -
Impact of fines type on gas flow using 3D micro-computed tomography
( Society of Petroleum Engineers , 2019 , Conference Paper)Methane hydrates are promising unconventional energy source with natural reserves above 1,000 Trillion m3. Hydrates are found in saturated sandy sediments, where multi-phase flow of gas takes place through sediment's pores, ... -
Impact of fines type on gas flow using 3D micro-computed tomography
( Society of Petroleum Engineers , 2019 , Conference Paper)Methane hydrates are promising unconventional energy source with natural reserves above 1,000 Trillion m3. Hydrates are found in saturated sandy sediments, where multi-phase flow of gas takes place through sediment's pores, ... -
Impact of high turbidity on reverse osmosis: Evaluation of pretreatment processes
( Desalination Publications , 2020 , Article)This study evaluates the performance of sand filtration (SF) and ultra-filtration (UF) as pretreat-ment processes for reverse osmosis (RO) for seawater with turbidities of 4.8, 23.2, and 99.7 NTU. For seawater with a ... -
Impact of Ionic Strength on Colloid Retention in a Porous Media: A Micromodel Study
( Qatar Univesrity Press , 2020 , Conference Paper)Release of deposited colloids in the soil porous media during two-phase flow poses potential health hazard due to the facilitated transport of contaminants towards groundwater reservoirs. Considerable uncertainties exist ...