With the implementation of strict regulations on the maximum allowable residue levels (MRLs) of pesticides in food matrixes worldwide, sensitive, reliable, and high-throughput analytical methodologies are urgently required for rapid screening and monitoring of the level of pesticide residues in foodstuffs. In this application note, we have detailed a method on QuEChERS extraction and cleanup pr...

Irreducible testors (also named typical testors) are a useful tool for feature selection in supervised classification problems with mixed incomplete data. However, the complexity of computing all irreducible testors of a training matrix has an exponential growth with respect to the number of columns in the matrix. For this reason different approaches like heuristic algorithms, parallel and dist...

In the paper, an opportunity for the development of multichannel transcutaneous raster matrixes for sensors of oxygen on the basis of an electrochemical cell sensor is described. An analysis of the influence of heat sources on the distribution of the temperature pattern of a raster matrix for sensors of oxygen had been carried out, and their optimum configuration had been found. The application...

In this paper, we used Lyapunov theory and Linear Matrix Inequalities (LMI) to design a generalized observer by adding more complexity in the output of dynamic systems. Our designed is based on optimization problem, minimizing error between trajectories master slave systems subject incremental quadratic constraint. Moreover, an algorithm given our paper demonstrate method for obtaining desired ...

Fractured carbonate reservoirs account for 25% of world’s total oil resources and for 90% of Iranian oil reserves. Since calcite and dolomite minerals are oil wet, gas oil gravity drainage (GOGD) is known as the most influencing production mechanism. The most important issue within gas injection into fractured media is the channeling problem which makes the efficiency of gas injection process e...

Ethyl carbamate (EC), a toxic contaminant occurring in food processing, may possess a risk to human health. To facilitate the basic study on its metabolism and applied study on its monitoring, we first established a rapid determination method of EC in human cells (HepG2) based on UPLC-TOF-MS. This method showed good linearity over a range of 60-6000 ng/mL (R2>0.99) in both extra/intra-cellular ...