Energy management for electric vehicles in smart cities: a deep learning approach

International audienceWe propose a solution for Electric Vehicle (EV) energy management in smart cities, where a deep learning approach is used to enhance the energy consumption of electric vehicles by trajectory and delay predictions. Two Recurrent Neural Networks are adapted and trained on 60 days of urban traffic. The trained networks show precise prediction of trajec-tory and delay, even for long prediction intervals. An algorithm is designed and applied on well known energy models for traction and air conditioning. We show how it can prevent from a battery exhaustion. Experimental results combining both RNN and energy models demonstrate the efficiency of the proposed solution in terms of route trajectory and delay prediction, enhancing the energy managemen

Development of a new bisphenol A electrochemical sensor based on a cadmium(ii) porphyrin modified carbon paste electrode

In this study, the (5,10,15,20-tetrakis[(4-methoxyphenyl)]porphyrinato)cadmium(II) complex ([Cd(TMPP)]) was successfully used as a modifier in a carbon paste electrode (CPE) and exploited for bisphenol A (BPA) detection. Analytical performance revealed two linear ranges from 0.0015–15 μM and 0.015–1.5 mM with a detection limit of 13.5 pM. The proposed method was implemented in water samples, which resulted in quantitative signals over the range 6.5–1000 μM with recoveries between 92.6 and 107.7% for tap water and between 96.6 to 106.0% for mineral water

Electrical properties modulation of PVA-glycerol based composites for flexible sensors

International audiencePhysical and electrical properties of films composed of polyvinyl alcohol (PVA) polymer with glycerol (Gly) used as a plasticizer are reported. These plasticized polymer blends are promising for flexible sensors. Different concentrations (wt%) of Gly (10, 20, 30, 40) are added to the PVA matrix prepared using a facile solution casting method. The films were characterized using FTIR, DSC and impedance spectroscopy.</p

3D FEM Simulation study of RF μCOILS For biomedical and environmental applications

International audienc

Study of ZnO nanoparticles based hybrid nanocomposites for optoelectronic applications

International audienceWe report on the effect of nanoparticle concentration on the performance of hybrid polymer/zinc oxide (ZnO) thin films. We used scanning electron microscopy, atomic force microscopy, Raman spectroscopy, UV-Vis absorption, and photoluminescence spectroscopies to study the morphology, structure, and optical behavior of the different nanocomposites. Topographical analysis has shown that ZnO nanoparticles (n-ZnO) affect the morphology of thin film and indicated that the roughness of the samples was found to increase with the concentration of n-ZnO until 50 wt. %, then decreased for higher concentration. A clear contribution of nanoparticles in the nanocomposites absorption has been demonstrated in UV-Vis spectra with maintaining the absorption features of the polymer. Further investigations have revealed a decrease in band gap energy (E-g) with increasing nanoparticles amount in the polymer showing size variation depending on n-ZnO. The structures have shown overlapping emission bands from both ZnO and the polymer. The origins of this emission and its evolution with nanoparticles concentration were also discussed. (C) 2016 AIP Publishing LLC

Structural, thermal and dielectric properties of glycerolized hydrogen-bonded polyvinyl alcohol films

Funding information: Region Auvergne-Rhône-Alpes through the project Pack Ambition International 2019 “GRESAM”; University of Sousse “Bourse d'alternance” fellowshipInternational audienceIn order to evaluate the influence of plasticizers on the behavior of the dielectric properties of polymers intended for the elaboration of flexible sensors, we have studied the influence of the addition of glycerol (10&nbsp;wt%&ndash;40&thinsp;wt%) in polyvinyl alcohol (PVA). Once processed, the PVA films were not subjected to any particular annealing and they were dried at room temperature for 24&thinsp;h before being characterized. This choice allows both to take advantage of the presence of water in the bulk of the material, which will help to make the PVA more flexible (increase of plasticization effect produced by extra-H-bonding) and avoid a transient behavior of water absorption into the material, as we could verify. DSC and FTIR investigations confirm good intermolecular interaction between vinyl polymer chains, glycerol, and water molecules. Dielectric spectroscopy analysis, carried out in [25&deg;C&ndash;110&deg;C] temperature and [0.1&nbsp;Hz&ndash;1&nbsp;MHz] frequency ranges, reveals a significant increase in the dielectric constant when the glycerol content is higher (at 0.1&nbsp;Hz: 322 for pure PVA, 1.3&nbsp;&times;&thinsp;106 with 40&thinsp;wt% of glycerol). Polar hydrogen bonds introduced by the glycerol are the main reason for this increase. Ionic conductivity induced by these dipoles dominates the loss tangent response of the material. The activation energy obtained from the DC conductivity plateau obeys to a conventional Arrhenius law with a decreasing value at highest glycerol contents (1.35&thinsp;eV for pure PVA against 0.46&thinsp;eV with 40&thinsp;wt% of glycerol).</p

NMR Implantable Microcoil FEM Based Comparative Study for Numerical Brain Model Application

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Correlation between nanostructural, optical, and photoelectrical properties of P3HT: SiNW nanocomposites for solar- cell application

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Characteristics of the bitter and sweet honey from Algeria Mediterranean coast

Aim: This study aimed to compare the physicochemical, the biochemical, and the antioxidant characteristics of unifloral bitter honey and polyfloral sweet honey. Materials and Methods: Unifloral bitter and polyfloral sweet honey samples were, respectively, harvested in January and July, and then, they were extracted by the traditional method. The markers of refractive index, pH, free acidity, Brix index, density, reducing sugars, total polyphenols, flavonoids, tannins, 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing/ antioxidant power (FRAP) were evaluated. Results: The obtained results showed that the physicochemical parameters are within the normal ranges, in which they meet the international standards (Codex Alimentarius). For biochemical constituents, matching concentrations of reducing sugars (glucose+fructose) were observed in both samples, while that of sucrose were very low in unifloral than polyfloral honey. The levels of the active ingredients showed a difference in total polyphenols and tannins of the two types of honey studied, whereas that of flavonoids were almost similar. The antioxidant activity of various samples evaluated by DPPH and FRAP indicated that unifloral has a superior activity. Conclusion: Compared to polyfloral honey, unifloral bitter honey has lower sucrose, high total polyphenols, and tannins levels, in addition to higher antioxidant potential