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Now showing items 171-180 of 217
How functional traits of estuarine macrobenthic assemblages respond to metal contamination?
(
Elsevier B.V.
, 2016 , Article)
The effects of metal contamination on estuarine macrobenthic communities were investigated using the Biological Traits Analysis (BTA). The study was carried out in the Tagus estuary (western Portugal). Samples of macrobenthic ...
Microplastics in coastal environments of the Arabian Gulf
(
Elsevier Ltd
, 2017 , Article)
Eight sandy beaches along the coastline of Qatar and four sea surface stations on the eastern coast, adjacent to Doha Bay, were surveyed between December 2014 and March 2015. Microplastics, mainly low density polyethylene ...
Volatility transmission across currencies and commodities with US uncertainty measures
(
Elsevier Inc.
, 2016 , Article)
This paper uses the Multi-chain Markov Switching model (MCMS) conditioned on US uncertainty measures (VIX, VIX-oil and FSI) to examine the patterns of volatility transmission across the resource, major and safe haven ...
Kinetics and thermodynamics of enhanced adsorption of the dye AR 18 using activated carbons prepared from walnut and poplar woods
(
Elsevier
, 2015 , Article)
Activated carbons prepared from walnut and poplar woods are used as economical adsorbents for the rapid removal and fast adsorption of Acid Red 18 dye from the aqueous solutions; the kinetics, isotherm and thermodynamics ...
Energy efficiency of direct contact membrane distillation
(
Elsevier B.V.
, 2018 , Article)
Membrane distillation (MD) is a promising technology due to its ability to function using low temperature differences and low-quality heat sources, thus allowing it to operate on solar or waste heat. The flux and energy ...
Activation of kaolin with minimum solvent consumption by microwave heating
(
Mineralogical Society
, 2014 , Article)
A kaolin clay was activated with 1.0 M H2SO4 solution at minimum liquid to solid ratio (L/S) using microwave heating. The optimum experimental conditions for activation were L/S ratio 3.0 mL 1 M H2SO4 per gram kaolin, ...
Potential application of microalgae in produced water treatment
(
Desalination Publications
, 2018 , Article)
The current study examines pollutant removal efficiency from the produced water of a local petroleum industry by five different local microalgae species. The five microalgae strains Monoraphidium, Chlorella, Neochloris, ...
Source identification of beached oil at Al Zubarah, Northwestern Qatar
(
Elsevier B.V.
, 2017 , Article)
The Gulf was contaminated with a large quantity of crude oil during the Gulf War in 1991. Some of the oil beached on the shorelines of the Northwest coast of Qatar. It was discovered, during a sampling campaign in 2015, ...
Metal distribution in marine sediment along the Doha Bay, Qatar
(
Kluwer Academic Publishers
, 2015 , Article)
Concentrations of 25 heavy metals (Ag, Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Sr, V, Zn and Hg) in surface sediments along the Doha Bay from 10 transects each with five stations were ...
Selective removal of dibenzothiophene from commercial diesel using manganese dioxide-modified activated carbon: A kinetic study
(
Taylor and Francis Ltd.
, 2015 , Article)
With a total concentration of 7055 mgS/kgfuel, the content of organosulphur compounds (OSCs) in local diesel is 20 times higher than the regulated value. Analysis revealed that 30% of OSC is originated from dibenzothiophene ...