Mbarek Taleb

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In modern clinical practice, Digital Subtraction Angiography (DSA) is a powerful technique for the visualization of blood vessels in a sequence of X-ray images. A serious problem encountered in this technique is the presence of artifacts due to patient motion. The resulting artifacts frequently lead to misdiagnosis or rejection of a DSA image sequence. In(More)
From a brief review of the literature, it is shown that surface states within dielectrics represent a critical step in charge injection whereas only scarce physical descriptions of these phenomena are available. It is confirmed from space charge measurements on low density polyethylene (LDPE) that the work function of metals used as electrodes does not(More)
The aim of this work is to propose a one-dimensional bipolar model of charge generation and extraction in a low density polyethylene (LDPE) under DC voltage including the effect of interfacial states. These surface states are described as an exponential distribution of traps over a 1µm depth region next to the electrodes. The distribution has a(More)
The aim of this work is to better understand the impact of the nature of the metal and of the surface topology on the charge generation at a metal / dielectric interface. Conduction current and space charge measurements using the pulsed electro-acoustic method (PEA) have been carried out on low density polyethylene (LDPE-A) films with different metal(More)
In the present work, we investigate the bonding, structures, stability and spectra of the Zn(q+)Im (where q = 0, 1, and 2) complexes, which are zeolitic imidazolate frameworks (ZIFs) and Zn-enzyme sub-units. Through a benchmark work, we used density functional theory (DFT) with dispersion correction and standard and explicitly correlated ab initio methods.(More)
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