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El-Ragaby, E. 
Al-Dulaijan, A. 
El-Ragaby, E.
El-Ragaby, E. 
Chang, Al Bahar & Zhao (Eds), 2012 Taylor & Francis Group, London, pp. 233-237

Lakhmi et al. [4] developed a natural convection solar air heater for drying of paddy.
El-Sebali et al. [7] designed an indirect type natural convection solar dyer with sand as thermal energy storage material.
Dilip Jain et al. [8] developed a natural convection solar dryer with paraffin wax as a PCM.
El-Sebaii, M.R.I.
[7] A El-Sebaii, S Aboul-Enein, M.R.I Ramadan, and H.G El-Gohary, Experimental investigation of an indirect type natural convection solar dryer, 43 (2002) 2251–2266

El-Shazly1,a A.A.
Younesi et al. [8] suggested that the extent of reaction is determined by the reaction rate rather than by the equilibrium thermodynamics.
Shen et al. [12] found that the kinetic model of cementation of Cd2+ by zinc will lead to better designs on an industrial scale.
Abd El-Ghani: J. of Colloid and Interface Science Vol. 280 (2004), p. 9
El-Ashtoukhy, O.

SiCp/Al composites have been used in a number of engineering applications including the consumer goods.
SiCp/Al composites are very difficult to machining because of the hard particles in the Al alloy matrix.
But up to now little research work has been done on researching the drilling properties of SiCp/Al composites, especially for the high volume fraction and large particle size SiCp/Al composites.
Microstructure of SiCp/Al composites Fig. 2.
El-Gallab and M.

Tool Wear and Form Accuracy in Ultrasonic-Assisted Milling of Soda-Lime Glass Yasmine El-Taybany1,a*, Mohab Hossam1,2,b, Hassan El-Hofy1,c 1Department of Industrial Engineering and Systems Management, School of Innovative Design Engineering, Egypt-Japan University of Science and Technology, P.O.
Shen et al. [4] investigated the wear characteristics of the diamond wheel during UAG of the alumina ceramic.
Fang et al. [7] stated that rotary ultrasonic machining had less tool wear during the side milling of K9 optical glass.
Dahnel et al. [11] concluded that ultrasonic assisted drilling of CFRP and titanium alloys resulted in less tool wear rate compared to conventional drilling.
Klocke et al., Abrasive machining of advanced aerospace alloys and composites, CIRP Ann. - Manuf.

., El-Minia University, El-Minia, Egypt 2 Faculty of Science, Physics Dept., South Valley University, Aswan-81528, Egypt Keywords: Al-Si Casting Alloys, Positron Annihilation, Quenching Process, Formation of Vacancy.
The composition of the casting Al-Si alloy used in the present work in wt. % Al-alloy Si Fe Cu Mn Mg Zn A356.0 7.0 0.2 0.2 0.1 0.3 0.1 Preparation, dimensions and polishing of the samples are described in [1,2].
Abdel-Rahman et al., : Turk J.
Badawl et al., : Aluminum Transactions An International Journal Vol. 2, No. 1 (2000)
Kiregaard et al.,: Comp.

El-Magd, E.
El-Etr and M.
El Bastawesy, K.
Al-Amri, Flash flood hazard mapping based on quantitative hydrology, geomorphology and gis techniques (case study of wadi al lith, Saudi Arabia), Arabian Journal of Geosciences, vol. 7, no. 6, pp. 2469-2481, 2014
Montgomery, et al., Hydrological applications of GIS.

Experimental Aluminum isopropoxide (Al(OC3H7)3) (98+%, Aldrich) was added to the distilled water with molar ratio of Al:H2O=1:100 with refluxing at 85 ℃.
Bolt et al. reported that the metal oxide and Al2O3 could form metal-alumina oxide complexes by a solid-solid interaction [7].
El-Shobaky, M.
El-Shobaky: Appl.

beam (θ=9°) Hawileh et al. (2012) CFRP Square (Two openings-One in each shear span) Mid., top and bottom of shear span 200 x 200 250 x 250 Vertically and Horizontally around the opening, U-wrap and full wrap Finite Element Analysis Good agreement of results El-Maaddawy and Sherif (2009) Experimental and Analytical method Increase beam strength 35-73%.
El-Maaddawy and S.
El-Maaddawy and B.
El-Ariss: J.
El-Maaddawy and M.

The ARB experiments were performed for pure Al and Al alloys-sheets in order to validate the computer simulation results concerning the grain boundary stability of textured materials.
This bifurcation was observed by Eichelkraut at el. [4] in their statistical simulation.
This bifurcation was observed by Eichelkraut at el. [4] in their statistical simulations.
Experimental verification The ARB（Accumulative Roll-Bonding）[17] rolling experiments for pure Al and Al alloys sheets were were performed on a pilot mill at the National Research Institute for Materials Science.
In order to validate the simulation results, the ARB experiments were performed for the pure Al system.