Results 11 to 20 of about 13,221 (117)

Population irruption of the clam Meretrix morphina in Lake St Lucia, South Africa

open access: yesSouth African Journal of Science, 2017
The thick-shelled clam Meretrix morphina, previously referred to as Meretrix meretrix, now occurs in the west Indian Ocean region, along the eastern seaboard of Africa, from the Red Sea to the Mlalazi Estuary, close to the Tugela River.
Nelson A. F. Miranda   +6 more
doaj   +1 more source

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

open access: yesNanomaterials, 2020
Heavy metals are inorganic pollutants which pose a serious threat to human and environmental safety, and their effective removal is becoming an increasingly urgent issue.
Yajie Chen, Xue Bai, Zhengfang Ye
doaj   +1 more source

Uncertainty and sensitivity analysis of large shallow lake hydrodynamic models

open access: yesShui kexue jinzhan, 2012
This study conducts parametric uncertainty and sensitivity analysis of large shallow lake hydrodynamic models.The Environmental Fluid Dynamics Code(EFDC) model is applied to simulate the flow velocity and water level in Lake Taihu that is characterized ...
LI Yi-ping   +3 more
doaj   +1 more source

On a shallow water wave equation [PDF]

open access: yesNonlinearity, 1994
In this paper we study a shallow water equation derivable using the Boussinesq approximation, which includes as two special cases, one equation discussed by Ablowitz et. al. [Stud. Appl. Math., 53 (1974) 249--315] and one by Hirota and Satsuma [J. Phys. Soc. Japan}, 40 (1976) 611--612]. A catalogue of classical and nonclassical symmetry reductions, and
Clarkson, Peter A.   +1 more
openaire   +2 more sources

Effects of muddy water irrigation with different sediment gradations on nitrogen transformation in agricultural soil of Yellow River Basin

open access: yesWater Science and Engineering, 2022
Muddy water irrigation has been widely practiced in the Yellow River Basin for agricultural production and is an important method of economical and intensive utilization of water resources.
Li-na Chen   +6 more
doaj   +1 more source

Experimental Study on the Curing Effect of Dredged Sediments with Three Types of Curing Agents

open access: yesMATEC Web of Conferences, 2016
Sediment solidification technology is widely used to dispose dredged sediment, three types of curing agents were used in this study to solidified the dredged sediment from shallows in Nantong with three types of curing agents: JY, ZL and FJ.
Yan Lei-Ming   +4 more
doaj   +1 more source

Enhanced Degradation of Waste Activated Sludge in Microbial Electrolysis Cell by Ultrasonic Treatment

open access: yesFrontiers in Microbiology, 2019
This study investigates the feasibility of ultrasonic pretreatment for improving treatment efficiency of waste activated sludge (WAS) in microbial electrolysis cell (MEC).
Kai Hu   +6 more
doaj   +1 more source

Rhizosediments of Salicornia tegetaria Indicate Metal Contamination in the Intertidal Estuary Zone

open access: yesFrontiers in Environmental Science, 2020
Metal pollution is a well-known anthropogenic impact of highly developed estuaries, with dire consequences to the ecosystem. This study investigated the metal concentrations (Al, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in the sediment colonized by Salicornia ...
Marelé A. Nel   +7 more
doaj   +1 more source

Differences in hydrogeochemistry between shallow and deep aquifers in the Baiyangdian basin, China [PDF]

open access: yesE3S Web of Conferences, 2019
Groundwater is the dominant long-term water resource for agricultural irrigation and industrial production in the Baiyangdian basin, North China Plain. Groundwater and pore-water were investigated to evaluate chemical evolution and geochemical processes ...
Guo Huaming   +6 more
doaj   +1 more source

From offshore to onshore: multiple origins of shallow-water corals from deep-sea ancestors. [PDF]

open access: yesPLoS ONE, 2008
Shallow-water tropical reefs and the deep sea represent the two most diverse marine environments. Understanding the origin and diversification of this biodiversity is a major quest in ecology and evolution.
Alberto Lindner   +2 more
doaj   +1 more source

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