a solid phase extraction sorbent based on polyaniline/graphene nanocomposite is presented. the structure and morphology of synthesized nanocomposite were investigated by fourier transform infrared spectroscopy, field emission scanning electron microscopy, x-ray diffraction and thermal gravimetric analysis. the dispersive solid phase extraction was employed to the isolation and preconcentration ...

A high-performance Fortran code is developed to calculate the spinand parity-dependent shell model nuclear level densities. The algorithm is based on the extension ofmethods of statistical spectroscopy and implies exact calculation of the first and secondHamiltonianmoments for different configurations at fixed spin and parity. The proton–neutron formalism is used. We have applied the method for...

Why are some people more skilled in complex domains than other people? According to one prominent view, individual differences in performance largely reflect individual differences in accumulated amount of deliberate practice. Here, we investigated the relationship between deliberate practice and performance in sports. Overall, deliberate practice accounted for 18% of the variance in sports per...

Modern software such as word processors, slide preparation/presentation tools, or music composition packages are designed to produce artifacts or performances. Now, some designers are expanding their goals to include creativity support into their software. This essay builds on the genex framework for creativity, which has four phases and eight activities. It focuses on the composition activity ...

We present a data{parallel formulation of an adaptive version of Anderson's method for N {body particle interactions. Our formulation consists of a storage and computationally eecient array{based representation for the nonuniform hierarchy that models arbitrary particle distributions for the computational procedure. We also present data{parallel implementations (in HPF) of several well known pa...

2014 In this paper, we present the influence of some astronomical and constructive parameters on the HFT working. The astronomical parameters are : (1) hour and (2) day. The constructive parameters are : (3, 4) the east-west and north-south distances between heliostats, (5) the mirror size, (6) the tower height, (7) the distance between the tower and the heliostats field. The HFT working is ana...

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