Results 31 to 40 of about 920,646 (300)

Nitrogen leaching in small agricultural catchments [PDF]

open access: yes, 2004
Nitrogen (N) leaching from arable land to the aquatic environment is considered a serious problem. Small agricultural monitoring catchments in Sweden were used for the application and testing of model-based methods for quantification of N leaching from ...
Kyllmar, Katarina
core   +1 more source

Comparison of nitrification inhibitors to restrict nitrate leaching in a maize crop irrigated under mediterranean conditions [PDF]

open access: yes, 2010
The aim of this paper was to compare dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) as inhibitors of ammonium oxidation and nitrate leaching after applying fertilizer to a maize (Zea mays L.) crop grown under Mediterranean conditions.
Diez, J.A.   +8 more
core   +1 more source

Nitrate leaching in grazed grasslands of different composition and age [PDF]

open access: yes, 2002
In a field experiment at Research Centre Foulum a suction cup technique was used to investigate nitrate leaching from grassland depending on composition (grass-clover or perennial ryegrass), management (grazing or cutting) and age of the swards.
Eriksen, J., Vinther, F.P.
core   +1 more source

Preparation of Iron Nanoparticles by Selective Leaching Method [PDF]

open access: yesActa Physica Polonica A, 2015
Iron nanoparticles were prepared by selective leaching method. Initially the rapidly solidified AlFe11 alloy was prepared and consequently the aluminium matrix was dissolved from this alloy in 20% NaOH solution. This process was carried out at 0 and 80°C.
A. Michalcová   +5 more
openaire   +2 more sources

A comparison among bio-derived acids as selective eco-friendly leaching agents for cobalt: the case study of hard metals waste enhancement [PDF]

open access: yes, 2023
Peculiar chemical, mechanical and magnetic properties make cobalt a key metal for a variety of “hot” applications like cathode production of Li-ion batteries. Cobalt is also the preferred metallic binder for tungsten carbide tools manufacturing.
Amadou, Oumarou Amadou   +11 more
core   +2 more sources

Using a linked soil model emulator and unsaturated zone leaching model to account for preferential flow when assessing the spatially distributed risk of pesticide leaching to groundwater in England and Wales [PDF]

open access: yes, 2004
Although macropore flow is recognized as an important process for the transport of pesticides through a wide range of soils, none of the existing spatially distributed methods for assessing the risk of pesticide leaching to groundwater account for ...
Dubus, Igor G.   +3 more
core   +1 more source

On the progression of leaching from large particles in heaps [PDF]

open access: yes, 2012
Includes bibliographical references.Although heap leaching is by now a well-established technology choice in the mining industry, the process remains limited by low recoveries and long extraction times.
Ghorbani, Yousef
core   +1 more source

Advances in Selective Flotation and Leaching Process in Metallurgy [PDF]

open access: yesMetals, 2022
Metals are a finite resource that are necessary to maintain living standards in modern society, due to their countless applications, such as transportation vehicles, building and construction, household appliances, electronic devices, etc. [...]
openaire   +4 more sources

Selective leaching of Mo from an off-grade gravity lead concentrate in Na2CO3 solution [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2019
The selective leaching of Mo from an off-grade gravity lead concentrate was investigated in Na2CO3 solution using air as an oxidant. The leaching behaviors of Mo and Pb were predicted by the thermodynamic phase diagrams of Pb-Mo-C-H2O system.
Liu Z.-X.   +4 more
doaj   +1 more source

Extraction of metals from saprolitic laterite ore through pressure hydrochloric-acid selective leaching

open access: yes, 2015
In this study, pressure hydrochloric-add selective leaching was used to leach Ni and Co from saprolitic laterite ore on the basis of potential-pH diagrams constructed for Fe-Si-Cl-H2O and Ni-Si-Cl-H2O systems. The leaching of Ni, Co, Mg, Mn, and Fe was
Han, Linxin   +6 more
core   +1 more source

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