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However, the EL increases firstly, andthen a decrease, but the change range of both process are small, stay above 16%.
References [1] P.C.M.Rodrigues, E.V.Pereloma, and et al.
Chen, K.L Wang, et al.
Li, et al.
Wang, et al.

Nasif et al. [1] developed Z shaped heat exchanger and measured its sensible, and latent effectiveness.
Nasif et al. [2] developed an opposite shape to the above mentioned Z shaped heat exchanger and obtained its effectiveness mathematically.
Al-Waked, G.
Al-Waked, M.
Al-Waked, M.

The fracture toughness (KC) calculations were based on the crack length measurement of the radial crack pattern produced by Vickers indentations according to the formula estimated by Shetty et al. [13]. 3 Results and discussion 3.1 Analysis of the phase transformation temperature of WC-40vol.
El-Eskandarany, M.
El-Eskandarany, Fabrication and characterizations of new nanocomposite WC/Al2O3 materials by room temperature ball milling and subsequent consolidation, J.
Saito, Effect of the aluminum content on the behavior of mechanochemical reactions in the WO3-C-Al system, J.

Co/Al ratio has a significant effect on the color of CoAl2O4 ceramic pigments.
Usually, the Co/Al ratio of CoAl2O4 with spinel structure is l:2.
El Hadri, H.
El Idrissi Raghni, Sol gel synthesis of forsterite, M-doped forsterite (M = Ni, Co) solid solutions and their use as ceramic pigments, J.
El Ouatib, L.

Hsu et al. have studied the propagation of Lamb waves in two-dimensional PC plates, based on Mindlin’s plate theory and the plane wave expansion method[3].
Vasseur et al. have introduced a supercell plane wave expansion (SC-PWE) method for the calculation of elastic band[4].
Gao et al have studied the propagation of lower-order Lamb waves in 1D quasi-periodic composite thin plate according to a Fibonacci sequence[9].
Nougaoui, E.H.El Boudouti, D.
[10] Y.El Hassouani, H.Aynaou, E.H.El Boudouti, B.Djafari-Rouhani, A.Akjouj, and V.R.Velasco, Phys.

As can be seen from Fig.4, the final contact angles are lower than 90° for both Al-8wt% Mg and Al-12wt% Mg alloys at the temperature of 1073K, such result was not observed in the Al/SiC or Al-4 wt% Mg/SiC system.
El-Kady, A.
Jiang, Wetting of polycrystalline SiC by molten Al and Al−Si alloys, Appl.
Eustathopoulos, Wetting kinetics and bonding of Al and Al alloys on α-SiC, Mater.
Sato, Measurement of wetting of graphite by Al and Al–Si alloys using meniscography, Mater.

Age Hardening and Accompanying Transformations of the Al-Ag and Al-Cu-Mg Supersaturated Solid Solutions by F.Lourdjanea, Z.Chaiebb, A.Rahoc, M.Kadi-Hanifid Laboratoire ‘Solutions solides’, Faculté de Physique, USTHB, BP 32 El-Alia, Babezzouar, Alger, Algérie aLourdjane_Faiza@yahoo.fr, b hamzazoubir@yahoo.fr, c raho_azzeddine@yahoo.fr, d mkadihanifi@yahoo.fr Keywords: GP zones, GPB zones, precipitation, metastable phase, hardness isotherm, hardness isochronal.
The development of the transition metastable phases and the accompanying hardening of these transformations are studied for Al-20wt%Ag and Al-3wt%Cu-1wt%Mg supersaturated solid solutions.
Experimental methods The samples Al-20wt%Ag and Al-3wt%Cu-1wt%Mg were prepared by melting pure elements (purity 99.99%) in vacuum at 10-4 torr, homogenizing at 520°C and water quenching (23°C).

El-Shazly1, a, and H.A.
Al-Turaif2, b 1,2Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia aelshazly_a@yahoo.com, bhalturaif@hotmail.com Keywords: Polyaniline, Corrosion resistance, Rotating cylinders, Smart coatings.
Elshazly and Al-Turaif found that coating steel with polypyrrole can improve its corrosion resistance.
El-Shazly and H.A.
Al-Turaif, Int.

Sary El-Deen1,a, Nouran Y.Mohamed2,b* and Ahmed S.
El-Nasr, Adsorption of cationic dye (methylene blue) from water using polyaniline nanotubes base.
[17] Abd El Salam, H. and T.
[20] Mahmoud, A.S., et al.
[25] El-Shafei, M., et al.

Currently, such characterization is typically performed through the use of electro- (EL) and photoluminescence spectroscopy or imaging.
For electroluminescence (EL) measurements, obtaining spectral information from specific extended defects is quite difficult and is typically acquired with very low spectral resolution [4].
For the images presented here, 28 A/cm2 was passed through 4H-SiC pin diodes with an Al implanted belt surrounding the 0.93x0.93 mm diode.
A gridded top-side contact was used to allow EL to be collected through the top of the device.
Finally, EL spectra from a (4,4) IGSF in Zhdanov notation exhibited two emission lines.