نتایج جستجو برای: sequential extraction

تعداد نتایج: 249513  

Journal: :Chemical Geology 2021

Rare earth elements (REE) speciation in laterites are commonly estimated from sequential extraction procedure (SEP). In this study, the selectivity of a 5-steps SEP protocol was evaluated on individual synthetic Ce-material and applied to well-characterized lateritic profile developing over granite bedrock (Madagascar). The Ce-materials representative laterite minerals: Ce-doped oxyhydroxides k...

2012
Mickaël Fabrègue Agnès Braud Sandra Bringay Florence Le Ber Maguelonne Teisseire

Georeferenced databases contain a huge volume of temporal and spatial data. They are notably used in environmental analysis. Several works address the problem of mining those data, but none are able to take into account the richness of the data and especially their spatial and temporal dimensions. In this paper, we focus on the extraction of a new kind of spatio-temporal pattern, considering th...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید