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  1. 2 Open Physics

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  1. 2 2009

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  1. 2 Paun V.

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Fractal surface analysis of Zircaloy-4 SEM micrographs using the time-series method

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Paun V.
Open Physics
|
2009
|
vol. 7
|
issue 2
264-269
EN
The SEM microfractographies of Zircaloy-4 are studied by the time-series method. We first develop a computer application which associates a time series to each SEM micrograph. Furthermore, we will apply the phase space embedding technique to reconstruct the attractor and to compute the autocorrelation dimension. Using the fractal analysis technique, the SEM microfractographies of the fracture surface of the Zircaloy-4 samples have been analyzed.
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Two-dimensional diffusion model for the biopolymers dynamics at nanometer scale

100%
Paun V.
Open Physics
|
2009
|
vol. 7
|
issue 3
607-613
EN
In this paper the driven transport of linear polymers through a nanopore is presented. Biopolymer physical behavior in an external electric field is modeled and its motion is simulated using the Langevin impulse integrator method. Within fairly large limits, the polymer translocation time is inversely proportional with the electric field intensity and directly proportional with the polymer chain length.
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