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Now showing items 8621-8630 of 8727
Solar driven two-step CH4 reforming and H2O splitting using Al2O3 for Co-production of Al, syngas, and H2
(
Elsevier Ltd
, 2018 , Article)
The thermodynamic equilibrium and efficiency analysis of the solar-driven Al2O3-based CH4 reforming and H2O splitting process is performed in two sections: (1) Al and syngas producing open process (AS), and (2) Al, syngas, ...
Novice teachers' job satisfaction and coping strategies: Overcoming contextual challenges at Qatari government schools
(
Elsevier Ltd
, 2017 , Article)
The first years of teaching are challenging and how novice teachers cope has important implications for their satisfaction. The current study examined the perceptions of five novice and five experienced teachers about ...
Transition metal doped ceria for solar thermochemical fuel production
(
Elsevier Ltd
, 2018 , Article)
In this paper, the effect of doping of transition metal cations on thermal reduction and CO2 splitting ability of Ce0.9M0.1O2−δ materials (where, M = Ni, Zn, Mn, Fe, Cu, Cr, Co, Zr) is investigated by performing multiple ...
Mathematical modeling, simulation and optimization of solar thermal powered Encontech engine for desalination
(
Elsevier Ltd
, 2018 , Article)
This paper investigates a solar driven external combustion and regenerative engine, which can be used for desalination of seawater by using gaseous working fluids. The effect of operating and design parameters on engine ...
Single and multi-component adsorption of aromatic acids using an eco-friendly polyaniline-based biocomposite
(
Elsevier B.V.
, 2017 , Article)
The polyaniline coated with an agricultural waste (Argan nut shell) was prepared via in-situ chemical polymerization and used as an adsorbent material for removal of trimellitic (Tri), hemimellitic (Hemi) and pyromellitic ...
Novel controlled synthesis of nanoporous carbon nanorods from resorcinol-formaldehyde xerogels
(
Elsevier B.V.
, 2017 , Article)
A novel approach is discovered to produce carbon nanorods (CNRs) from resorcinol-formaldehyde xerogels. The structure and morphology of CNRs are characterized by pore size analysis, nano-scanning electron microscopy, ...
Aging evaluation of asphalt samples with Low Field Nuclear Magnetic Resonance
(
Elsevier Inc.
, 2017 , Article)
In this study, a recently developed methodology to assess aging of pavements by using Low Field Nuclear Magnetic Resonance (LF-NMR) was applied to asphalt mix samples at different aging states. The ultimate objective of ...
Characteristics and mitigation strategies for cell phone use while driving among young drivers in Qatar
(
Elsevier Ltd
, 2018 , Article)
There is no doubt that cell phone use while driving can lead to a higher probability of driver error, which increases the likelihood of more crashes. In Qatar, the high rate of cell phone use while driving among young ...
Literature Review of Advancements in Adaptive Ramp Metering
(
Elsevier
, 2016 , Conference Paper)
Over a period spanning more than 30 years, several ramp metering algorithms have been developed to improve the operation of freeways. Many of these algorithms were deployed in several regions of the world, and field ...
Time Delay and Cost Overrun in Qatari Public Construction Projects
(
Elsevier Ltd
, 2016 , Conference Paper)
This paper investigated cost overruns and delays in Qatari public construction projects. An extensive review of regional and international publications was conducted to get a better understanding of the problem and the ...