Phthalate esters are endocrine disrupters or mutagens. They are widely used as plasticizers and can be usually found in environmental samples, such as food, soil and polluted air. However, it is difficult to directly determine phthalate esters owing to their relatively low concentration and complex matrices. Therefore, preconcentration and separation have become increasingly important. In recen...

in this paper, intelligent water drop algorithm (iwd) is used to analyze single overhead line connected to grid-grounded arrester. in this approach, at first norton’s equivalent circuit of the overhead line over lossy soil is computed by method of moments (mom) and then for the problem under consideration, a nonlinear equivalent circuit in the frequency domain is proposed. finally applying inte...

One of the most notable challenges in single cell RNA-Seq data analysis is the so called drop-out effect, where only a fraction of the transcriptome of each cell is captured. The random nature of drop-outs, however, makes it possible to consider imputation methods as means of correcting for drop-outs. In this paper we study some existing scRNA-Seq imputation methods and propose a novel iterativ...

In Content-based Image Retrieval (CBIR), trial-and-error query is essential for successful retrieval. Unfortunately, the traditional user interfaces are not suitable for trying different combinations of query examples. This is because first, these systems assume query examples are added incrementally. Second, the query specification and result display are done on the same workspace. Once the us...

An important goal of workflow engines is to simplify the way in which the interaction of workflows and software components (or services) is described and implemented. The vision of the AristaFlow project is to support a "plug and play" approach in which workflow designers can describe interactions with components simply by "dragging" them from a repository and "dropping" them into appropriate p...

A new procedure is presented for the determination of low concentrations of lead and cadmium in water samples. Ligand assisted pseudo-stir bar hollow fiber solid/liquid phase microextraction using sol-gel sorbent reinforced with carbon nanotubes was combined with differential pulse anodic stripping voltammetry for simultaneous determination of cadmium and lead in tap water, and Darongar river w...

An important goal of workflow engines is to simplify the way in which the interaction of workflows and software components (or services) is described and implemented. The vision of the AristaFlow project is to support a "plug and play" approach in which workflow designers can describe interactions with components simply by "dragging" them from a repository and "dropping" them into appropriate p...

Network coding has been shown to improve the capacity and robustness in networks. However, since intermediate nodes modify packets en-route, integrity of data cannot be checked using traditional MACs and checksums. In addition, network coded systems are vulnerable to pollution attacks where a single malicious node can flood the network with bad packets and prevent the receiver from decoding the...

abstractthe oldest method for the managing of the illness is the use of medicinal plants. the use of herbal products as the first choice in self-treatment of minor conditions continues to expand rapidly across iran. this makes the safety of herbal products an important public health issue.pesticides are used widely in agriculture to increase the production by controlling the harmful insects and...