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El-Saghier, H.
El Batal, F.H.
El-Samman, A.
El-Adawy, A.
[40] A.Al.

Davies et al. [5] developed forming limit diagrams for welded materials in AA5xxx 1-2 mm TWBs under biaxial stretching condition based on M-K model.
El Fakir et al. developed and successfully validated a forming limit diagram prediction model for AA5754 that undergoes temperature, strain rate and strain path changes during deformation [6].
El-Fakir, L.
El Fakir, L.
El Fakir, L.

The reader is kindly referred to the proceedings of the recent Workshop on "Towards the First Silicon Laser" by Pavesi et al. [1] and references therein to get a satisfactory review of the topic.
Electroluminescence (EL) from RE-doped MOSLEDs EL spectra were measured on a MOS structure with a circular ITO electrode (diameter: 500 µm) at a constant current supplied by a Keithley 2410 sourcemeter.
More details of the EL measurements are described in Ref.[4].
Fig. 1: Overview of EL spectra in the visible range of different RE-elements embedded in a MOSLED.
In Fig. 1 an overview of the measured EL spectra in the visible wavelength range (except for Er) is shown.

AlSi-SiC Composites for Automotive Brake Rotor Fatma Firouz a*, Atef Daoudb, Malak Abou El-Khairc Composite Materials Laboratory, Central Metallurgical Research and Development Institute (CMRDI), P.O.
Table 1 Chemical composition of Al-9Si and Al-12Si Alloy Si Mg Cu Zn Fe Mn Al Al-9Si 8.79 0.393 0.314 0.0124 0.113 0.0333 Rest Al-12Si 12.36 1.190 1.480 0.0407 0.694 0.0184 Rest 2.3 Manufacturing of Brake Rotors made of AlSi-SiC Composites Schematic diagram of the stir casting apparatus used in this work is shown in Fig.1.
About 4kg of Al-9Si or Al-12Si matrix alloy were placed in the crucible and heated to 150°C above its liquidus temperature (600°C).
[10] F.M.Fairouz, A.A.Daoud, M..T.Abou El-khair, Aging behavior and tensile properties of cast and squeezed 6061-SiC particles composites, 21tstInternational Conference on Composite Materials, Xi’an, 20-25th August 2017
Abou El-Khair, Wear and friction behavior of sand cast brake rotor made of A359-20vol% SiC particle composites sliding against automobile friction material, Tribology International, 43, 2010, 544-553 [20] V.S.Aigbodion, S.B.Hassan, Effect of silicon carbide reinforcement on microstructure and properties of cast Al-Si-Fe/SiC particulate composites, Materials Science and Engineering A, Vol. 447, 2007, 355-360

This prediction was based on the deformation of theory of McDowell et al [[] McDowell EL, McKee KE, Sevin E.
Calors et al [[] Carlos E.
Roger Cheng, “Punching of Two-Way Concrete Slabs with Fiber-Reinforced Polymer Reinforcing Bars or Grids”, ACI Structural Journal, Vol. 100, No.5, 2003, pp. 589-598 ] and Jacobson et al [[] D.A.
Under this condition, equation 2 could be modified as below: (3) With the substitution of equation 4 to equation 1, the shear punching prediction method can be expressed as: critical perimeter (4) Validation In this study, two experimental tests by Sherif et al [[] Sherif El-Gamal, Ehab El-Salakawy, and Brahim Benmokrane, Behavior of Concrete Bridge Deck Slabs Reinforced with Fiber-Reinforced Polymer Bars Under Concentrated Loads, ACI Structural Journal, September-October 2005, pp727-735. ][[] Sherif El-Gamal, Ehab El-Salakawy, and Brahim Benmokrane, Influence of Reinforcement on the Behavior of Concrete Bridge Deck Slabs Reinforced with FRP Bars, ASCE, Journal of Composite for Construction, Vol. 11, No.5, 2007, pp449-458. ] and one experimental test by Khanna et al [[] Khanna.
The test model named G-S1 by Sherif et al [12] was selected as the physical model in this study.

El-Shazly1,b, M.
El-Kady1,4,c, and Kholoud Madih1,3,d 1Chemicals and Petrochemicals Engineering Department, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Alexandria, Egypt 2Faculty of Engineering, Aswan University, Aswan City, Egypt 3Chemical Engineering Department, Faculty of Engineering, Minia University, Minia City, Egypt 4Fabrication Technology Department, Advanced Technology and New Materials and Research Institute (ATNMRI), City of Scientific Research and Technological Applications, Alexandria, Egypt aHesham.elqady@aswu.edu.eg, belshazly_a@yahoo.com, cmarwa.f.elkady@gmail.com, dkhloud_madih@yahoo.com Keywords: Rice husk, Natural fibers, Cellulose nanocrystals, Characterization.
El-Shazly, S.
Al-Zahrani,” Preparation of activated carbon from fly ash and its application for CO2 capture,” Korean Journal of Chemical Engineering, vol. 32, pp. 723-730, 2015
Abd.El-Hamid,” Fabrication of novel magnetic zinc oxide cellulose acetate hybrid nano-fiber to be utilized for phenol decontamination,” Journal of the Taiwan Institute of Chemical Engineers, vol. 78, pp. 307-316, 2017

El Ghareeb [8] evaluated glass fiber and found out its applications in pressure piping.
Shi et al, F.M.
References [1] El-Tayeb NSM, Yousif BF, Brevern PV.
[2] El-Tayeb NSM, Yousif BF.
El Ghareeb “Evaluation of Glass and Basalt Fiber Reinforcements for Polymer Composite Pressure Piping” J.

From the environmental viewpoint, we give the evaluation model of environmental load (EL) of product by Eqs. 6 and 7: (6) (7) where EL is environmental load, LT is the lifetime of product, ELmeta is EL of material, ELmanu is EL of manufacturing, ELeolo is EL of end-of-life options.
In Eq.7, k is the number of modules of product, ki is kinds of materials of module i, is the ratio of each kind of material j in the ith module, is the EL of the utilization of material j, pi is kinds of components of each module i, sq is kinds of processes of component q, is the ratio of each kind of process l in the qth component, is the EL of process l, is the ratio of each kind of component p in the ith module, wr is the EL of the recycle of component p, wd is the EL of the disposal of component p. 3 Case Study A reduction gear is used as an example to show the effectiveness of the proposed methodology.
References [1] Jayal, A.D., et al., in: Sustainable manufacturing: Modeling and optimization challenges at the product, process and system levels, CIRP Journal of Manufacturing Science, 2010, 2(3): 1-10 [2] Sánchez, J., J.
Priest, et al., in: Intelligent reasoning assistant for incorporating manufacturability issues into the design process, Expert Systems with Applications, 1997, 12(1): 81-88 [3] Yasushi Umeda, Shinichi Fukushige, Keita Tonoike, Shinsuke Kondoh, in: Product modularity for life cycle design, CIRP Annals- Manufacturing Technology, 2008, 57 (1): 13–16 [4] Hwai-En Tseng, Chien-Chen Chang, Jia-Diann Li, in: Modular design to support green life-cycle engineering, Expert Systems with Applications, 2008, 34 (4): 2524–2537 [5] Shana Smith, Chao-Ching Yen, in: Green product design through product modularization using atomic theory, Robotics and Computer-Integrated Manufacturing, 2010, 26 (6): 1-2 [6] Kimura, F., Kato, S., Hata, T., Masuda, T., in: Product Modularization for Parts Reuse in Inverse Manufacturing, Annals of the CIRP, 2001, 50(1): 89-92

Lower Rpv obtained by thermal annealing under magnetic field resulted in enhancing the stability of the ITO/m-MTDATA/Al device.
ITO/m-MTDATA/Al layers.
The typical current-voltage characteristics of the ITO/ m-MTDATA/Al device is shown in Fig. 3.
El-Nahass, Z.
El-Gohary and H.

The shift of the diffraction lines indicates that lattice distortion occurs because of dissolution of Al.
The relationship between a, c, c/a or cell volume and Al content are shown in Fig.3 and Fig.4 respectively.
From the various trend of Ti3Si1.2-xAlxC2 solid solution, dissolution of Al is homogeneous, while x≤0.4 and 0.8≤x<1.2.
El-Raghy: Met.
El-Raghy: Met.