abstract with increasing population, mine activities for metal proceeding are also increasing, so environment will be influenced by contaminant especially heavy metals. in situ immobilization of heavy metals using inexpensive amendments is considered as a simple and cost-effective approach for reducing heavy metal contamination. in this research we used sequential extraction for assessing reduc...

In this paper we apply a domain decomposition technique to construct an approximation scheme for the Isaacs equation in R n. The algorithm is presented for a 2-domain decomposition and some hints are given for the case of d subdomains having crossing points. The parallel algorithm is proved to have the same xed point of the serial algorithm so that the convergence to the viscosity solution of t...

Recently, several studies have reported on combined procedures for the determination of radionuclides in soils or sediment samples with extraction chromatographic materials such as the TRU, Sr and TEVA Spec resins. These methods are somewhat difficult to apply for very low levels of fallout radionuclides without using large amounts of extraction chromatographic resin. Therefore, it is necessary...

The recurrent least squares (RLS) learning approach is proposed for controlling the learning rate in parallel principal subspace analysis (PSA) and in a wide class of principal component analysis (PCA) associated algorithms with a quasi{parallel extraction ability. The purpose is to provide a useful tool for applications where the learning process has to be repeated in an on{line self{adaptive ...

Phytochemical screening and antifungal activity test of jengkol leaf (Archidendron jiringa) extract have been carried out. The purpose this research is determine secondary metabolite content activities extract. Extraction was conducted with sequential extraction technique various solvent such as hexane, ethyl acetate methanol respectively. FTIR characterization show the presence O-H, C-H C-O C=...

The recurrent least squares (RLS) learning approach is proposed for controlling the learning rate in parallel principal subspace analysis (PSA) and in a wide class of principal component analysis (PCA) associated algorithms with a quasi{parallel extraction ability. The purpose is to provide a useful tool for applications where the learning process has to be repeated in an on{line self{adaptive ...

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...

The study used 276 urban soils and 447 rural soils collected from in and around the UK town of Northampton and focussed on the fractionation of Pb. The Pb fractionation obtained from total element data was compared to the fractionation of Pb in a subset of 10 urban soils obtained using a sequential extraction method. The fractionation of the Pb from the total element data and from the sequentia...