In this study, the sequential extraction method was applied to extract selected potentially toxic elements (PTEs) (Cd, Cr, Cu, Fe, Ni, Pb and Zn) in river sediments collected from Blood River situated Seshego area, Limpopo Province, South Africa. The study aimed assess a possible trend of mobilisation these sediment water. accuracy confirmed by analysing sediment-certified reference material, q...

A new attempt to characterize Hg speciation and to evaluate Hg mobility in soils was made by applying operationally defined speciation techniques coupled with fractionation of soil components to a soil sample collected just outside the Y-12 boundary of the Oak Ridge Reservation (ORR) site. The soil sample was fractionated based on redoximorphic features and particle size and a sequential extrac...

INTRODUCTION Sequential pattern mining deals with data represented as sequences (a sequence contains sorted sets of items). Compared to the association rule problem, a study of such data provides " inter-transaction " analysis (Agrawal and Srikant, 1995). Applications for sequential pattern extraction are numerous and the problem definition has been slightly modified in different ways. Associat...

Sequential pattern mining deals with data represented as sequences (a sequence contains sorted sets of items). Compared to the association rule problem, a study of such data provides “inter-transaction” analysis (Agrawal & Srikant, 1995). Applications for sequential pattern extraction are numerous and the problem definition has been slightly modified in different ways. Associated to elegant sol...

A method for estimating sound source distance in dynamic auditory „scenes‟ using binaural data is presented. The technique requires little prior knowledge of the acoustic environment. It consists of feature extraction for two dynamic distance cues, motion parallax and acoustic τ, coupled with an inference framework for distance estimation. Sequential and nonsequential models are evaluated using...

sediments from the southern caspian sea, located in iranian coast were examined on the basis of p-fractionation (five forms of phosphorus) by a sequential extraction scheme. ninety-six surface sediment samples (for each season with triplicate) were collected from eight sampling transects in 10 and 100 m depths during summer and winter in 2010-2011. the result indicated that the most abundant fo...

A detailed investigation of the mineralogy of As in the tailings of the Rabbit Lake uranium ore processing facility was conducted. The milling/ ore extraction process was sampled at three different locations to obtain information about when, where and under what condition secondary As phases form. These samples were compared with four samples of varying As content from the Rabbit Lake in-pit ta...