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Kellaci1 1 FIMA, University of Khemis Miliana, Road of Theniet El Had, 44225, Khemis-Miliana, Algeria 2 Laboratoire de Mécanique et Energétique, University Hassiba Benbouali of Chlef, Algeria *b.khelidj@orange.fr Keywords: Polymer Electrolyte Membrane Fuel Cells, Heat transfer, Charge transfer, Polarization Curve, Modelling Tool.
Latha et al [3] found experimentally that the performance of the fuel cell improves with the increase of pressure of the inlet gases.
Both heat conduction and heat convection phenomena can be found in the PEMFC single cell, Chupin et al [11], has demonstrated by using the Peclet number that the heat convection phenomena in the GDL/Membrane/GDL area is negligible comparing to the heat conduction’s one.

The similar result was reported by Jiang et al. [16] for pyrolitic temperature of starch polymer.
M., El-Nahas, H.
[15] Margaria et al, Plastics Materials Polyethylene.

Element Si Fe Cu Mn Mg Zn Al Composition 0.30 0.70 0.20 0.20 1.10 0.25 97.00 Statistical Representation of 3D microstructure For simulating realistic microstructures, both the subgrain shape statistics and the texture need to be incorporated into the 3D digital microstructure as illustrated in the following figure.
This result is in agreement with the theoretical study performed by Holm at al. [6].
El-Dasher, K.Y.

Svensson et al.
Lebedev et al.
[5] E.L.

Chakravorty el al. [14] examined how about two exhaustible resources interactions and achieved the optimal exploitation in the situation of environmental constrains.
Susana et al. (2012) [15] research exhaustible resources’ interaction and compatibility under the economic growth and clean environment.

., et al., Carbon Neutral Off-White Rice Husk Ash as a Partial White Cement Replacement.
El Damatty, Performance of rice husk ash produced using a new technology as a mineral admixture in concrete.
Nair, D.G., et al., A structural investigation to the pozzolanic activity of rice husk ashes.

Melville et al.: Phys.
Vol. 105 (2010) p. 257206 [6] E.L.
Evertz et al.: J.Stat.Mech.: Theor.Exp.

One of the main problems of conventional treatment of totally edentulous patients is the difficulty of adapting this type of prosthesis [8], Carlsson et al [9] stating that approximately 20% of total edentulous patients conventional prostheses fall into this category.
[7] Davis EL, Albino JE, Tedesco LA, Portenoy BS,Ortman LF.
[12] Weinstein AL, Klawitter JJ, Subhash CA and Schuessler R.

That reason of wet machining tending to increase the tangential mill-grinding force can be attributed to the small change of hardenness of Al matrix at lower temperatures in machining interface.
Due to the Al solfting, the contact pressure between workpiece and grinding wheel reduced relative to wet machining.
El-Gallab, M.

[3] G .Makaka, EL.
[12] Campesi R, Cuevas F, Gadiou R, Leroy E, Hirscher M, Vix- Guterl C, et al.
[17] Zhang J, Zou H, Qing Q, Yang Y, Li Q, Liu Z, et al.