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Al-Douri1,b, U.
Yeh et al.[15] used sol-gel method to deposit CZTS film on glass sodium substrate Without sulfurization treatment, thin film annealed at 280 oC .
Kasim Uthman Isah el.al.[17] prepared CZTS by sulfurization of thermally evaporated metallic precursors on glass substrates.
Rajpure, et al.
Schorr, et al.

Guthy et al. investigated the thermal conductivity of PMMA/SWNT composites prepared by coagulation [4].
PE/SWNT nanocomposite was fabricated by Haggenmueller et al. [6].
Xie et al., Measuring the thermal conductivity of a single carbon nanotube, Phys.
Brand et al., Thermal conductivity of single-walled carbon nanotube/PMMA nanocomposites, Trans.
El-Tantawy, K.

Nalk, et al.: J.
Vaidyanathan, et al.: J.
Jeyadevan, et al.: J.
El-Aziz: J.
Nambissan, et al.: Phys.

An Experimental Study of Nonlinear Behavior of Graphite/Epoxy Laminate under a Three-Point Bending Test Mouad BELLAHKIM1,a*, Youssef Benbouras1,b, Aziz Maziri1,c, EL Hassan Mallil1,d and Jamal Echaabi1,e 1Polymers Applied Research Team, Department of Mechanical Engineering, ENSEM, Hassan II University of Casablanca, Casablanca, Morocco amouadbellahkim@gmail.com, byoussef.mecanique@gmail.com, cazizmaziri@yahoo.fr, dmallilhassan@gmail.com, ea.echaabi@hotmail.com Keywords: Three-point bending test, Graphite-epoxy composite, woven laminate, linear & nonlinear behavior.
Echaabi & al. have studied theoretically and experimentally the progression of failure and the effect of the geometrical parameters in macroscopic and microscopic behaviors of the specimens in the three point bending test [7].
The results obtained in this work are compared with those obtained by Echaabi & al. [7].

El-Feky, M.
Al-Tayeb, B.H.
Ali, A.L.
El-Bany, I.
D., Abd-Al Ftah, R.

The material was rolled magnesium alloy sheet contains 3wt%Al, 1wt%Zn and Mg balance.
The density was lower even more than Al alloy, but the formability of Mg or its alloy was than other materials.
Experimental ▪ Material For the study, AZ31 alloy sheet of 1.5mm thickness was used, in which the contents of Al and Zn was 3wt% and 1wt% separately.
Figure 6 Base metal Laser without filler Laser with filler Tensile strength (N) 0 100 200 300 Elongation (%) 0 5 10 15 20 25 30 YS TS EL Figure 3.

The Ultraviolet Protection Factor (UPF) and percent blocking in UV-A (315-400 nm) and UV-B (280-315 nm) were calculated from the following equations [19]; UPF = (1) Where El = relative erythema spectral effectiveness, Sl= solar spectral irradiance, Tl = average spectral transmittance of the specimen (measured) and Dl = measured wavelength interval (2 nm) T (UV-A)AV = (2) T (UV-B)AV = (3) UV-A Blocking (%) = 100%-T(UV-A)
Therefore, these results correlated with previous studies investigated by Sarkar [21] and Mongkholrattanasit et al. [22] who show that a pale color give less UV protection.
El-Sayed, A.

References [1] Soyster.A.L., Convex programming with set-inclusive constraints and applications to inexact linear programming.
[6] El-Ghaoui,Lebret,H.
[7] El-Ghaoui,L.

As the researchers recognized that controlling the sintering conditions results in products with controlled properties, several studies that cover a wide range of engineering materials were conducted to examine the effect of sintering conditions on the properties of PM products; including: Al-Al2O3 composite [7], Cr-Mn-N alloyed stainless steel [8], Ti-3Al-2.5V [9], lead zirconatetitanate reinforced with ZnO whiskers [10], and (Ti, Ta) (C,N) based cermets [11].
El-Shiekh and A.
El-Nikhaily: Int.

For instance, Borlini et al. [8] investigated the use of a granite waste, after being processed by magnetic separation to eliminate ferrous residues, as an addition to clay ceramics for building tile production.
El-Maghraby, M.
El-Omla, F.