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السجلات المعروضة 8781 -- 8790 من 8938
Bioactive PCL matrices with a range of structural & rheological properties
(
Elsevier
, 2016 , Article)
Safer pharmaceutical and medical device excipients are being sought as alternatives to polyvinyl polymers that are commonly plasticised by carcinogenic phthalates. This paper demonstrates a biodegradable and non-toxic ...
Fabrication and characterization of pyridinium functionalized anion exchange membranes for acid recovery
(
Elsevier B.V.
, 2019 , Article)
In the present work, the fabrication of pyridinium functionalized anion exchange membranes (AEMs) for acid recovery using diffusion dialysis (DD) processes was developed using brominated poly (2,6-dimethyl-1,4-phenylene ...
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 ...
A review on recent trends in reactor systems and azeotrope separation strategies for catalytic conversion of biodiesel-derived glycerol
(
Elsevier B.V.
, 2019 , Article Review)
The increasing demand for biodiesel (BD) as a renewable and sustainable energy source has impelled the generation of abundant and low-cost byproduct glycerol, which accounts for 10 wt% of total BD production and requires ...
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 ...
Bio-carrier and operating temperature effect on ammonia removal from secondary wastewater effluents using moving bed biofilm reactor (MBBR)
(
Elsevier B.V.
, 2019 , Article)
This study investigates the impact of bio-carriers' surface area and shape, wastewater chemistry and operating temperature on ammonia removal from real wastewater effluents using Moving bed biofilm reactors (MBBRs) operated ...
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, ...