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Use of lignite as a low-cost material for cadmium and copper removal from aqueous solutions: Assessment of adsorption characteristics and exploration of involved mechanisms
(
MDPI
, 2021 , Article)
Lignite, as an available and low-cost material, was tested for cadmium (Cd) and copper (Cu) removal from aqueous solutions under various static experimental conditions. Experimental results showed that the removal efficiency ...
Co-doped zigzag graphene nanoribbon based gas sensor for sensitive detection of H2S: DFT study
(
Academic Press
, 2021 , Article)
In this work, we present a highly sensitive gas sensor for the detection of poisonous hydrogen sulfide gas (H2S) based on copper and zinc co-doped zigzag graphene nanoribbon (Cu/Zn-ZGNR). The electronic properties as well ...
Smart City Applications: Promoting comfort, health and well-being through Sustainable Smart Urban Design (S2UD) in Msheireb Downtown
(
Institute of Electrical and Electronics Engineers Inc. (IEEE)
, 2020 , Conference Paper)
This study explores the Msheireb Downtown Project by studying the design qualities and adopted applications of its public open spaces (POS). We uncover their roles in the smart city design system with an eye for how they ...
A framework for the analysis of damage and recovery characteristics of asphalt mixtures
(
Taylor & Francis
, 2020 , Article)
This study presents two approaches for evaluating damage and recovery characteristics of asphalt mixtures. The first approach focuses on determining damage by extracting recoverable viscoelastic strain that has no damage ...
Sludge-derived biochars: A review on the influence of synthesis conditions on pollutants removal efficiency from wastewaters
(
Elsevier
, 2021 , Article)
Pyrolysis is a thermochemical process that permits the conversion of biomasses into energy (bio-oil and biogas) and a solid residue called biochar. The generation of biochar from lignocellulosic materials has been, for ...
Forced vibration characteristics of embedded graphene oxide powder reinforced metal foam nanocomposite plate in thermal environment
(
Elsevier
, 2021 , Article)
Dynamic behavior of a new class of nanocomposites consisted of metal foam as matrix and graphene oxide powders as reinforcement is presented in this study in the framework of forced vibration. Graphene oxide powders are ...
Qatar Defense Strategies
(
Gulf Studies center - College of Arts & Sciences - Qatar University
, 2021 , Conference Paper)
Security become a crucial subject in the Arab world and Gulf region, particularly is that the security concept now include different aspects represent in social, cyber, economic and health security. So, the security of the ...
Microstructure and mechanical behavior of hot extruded aluminum/tin-bismuth composites produced by powder metallurgy
(
MDPI AG
, 2020 , Article)
In this study, Al-BiSn composites were synthesized by a combination of microwave sintering and hot extrusion processes. The structural, morphological, mechanical, and thermal properties were investigated to elucidate the ...
Magnetorheological elastomer-based variable stiffness flexible coupling for vibration isolation
(
Canadian Science Publishing
, 2021 , Article)
Rotating mechanical equipment such as pumps and motors can suffer from unattenuated torsional vibration. The causes of such vibration range from imbalance within the rotating system to misalignment, or even operating at ...
Mental health during COVID-19 in Qatar
(
BMJ Publishing Group
, 2020 , Other)
The COVID-19 pandemic has posed unprecedented health and social challenges. WHO has been working to promote the integration of mental health and psychosocial support into the COVID-19 response effort.1 It is vital that ...