Results 11 to 20 of about 826,849 (294)

Nonclassical shallow water flows [PDF]

open access: yes, 2007
This paper deals with violent discontinuities in shallow water flows with large Froude number $F$. On a horizontal base, the paradigm problem is that of the impact of two fluid layers in situations where the flow can be modelled as two smooth regions ...
Edwards, C.   +3 more
core   +1 more source

Modelling rollers for shallow water flows [PDF]

open access: yes, 2013
Hydraulic jumps, roll waves or bores in open channel flows are often treated as singularities by hydraulicians while slowly varying shallow water flows are described by continuous solutions of the Saint-Venant equations. Richard & Gavrilyuk (J.
Thual, Olivier
core   +5 more sources

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

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

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

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

The Monterey event in the Mediterranean: A record from shelf sediments of Malta [PDF]

open access: yes, 1996
Oligo-Miocene carbonate platform and shelf sediments outcropping on the Maltese Islands provide an excellent archive of the paleoceanography of the central Mediterranean.
Jacobs, E   +3 more
core   +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

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