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Ibrahiem El-Emary and M. 2Mona Abd El-Kareem: Towards Using Genetic Algorithm for Solving Nonlinear Equation Systems World Applied Sciences Journal 5 (3): 282-289, 2008
[5] Application of Genetic Algorithm in solving linear equation systems Al Dahoud Ali , Ibrahiem M.
El Emary, Mona M.
Abd El-Kareem

Al-Hinai, and M.
Al-Hinai, and A.
Al-Hinai, K.I.
El-Shafey, and M.
Al-Hinai, and K.

Vias et,al [11] obtained 93 % conversion using 9 : 1 methanol to jatropha oil molar ratio, reaction time 30 minute, NaOH as catalyst of 1 % amount.
Hanh et,al [12] obtained above 90 % conversion using 6 : 1 ethanol to jatropha oil molar ratio with 1 % of NaOH and irradiation time of 30 minute.
Study by Worapun et al, [13] showed that transesterification reaction using methanol to jatropha oil ratio 15 % w/w .
According Freedman et al, [14] has revealed that the rate of reaction is strongly influenced by the increase of temperature.
References [1] El Sherbiny, S.A., Refaat, A.A., El Sheltawy, S.T., Production of biodiesel using the microwave technique, Journal of Advanced Research, I (2010) 309-314

Oxygen Effect on the Structural, Optical and Electrochemical Properties of Radio Frequency Sputtered SnO2 Thin Films for Photocatalytic Degradation of Methylene Blue Mouhcine Ourbaa1,a, Said Elmassi1,b, Hamza Badr1,c, Abdelaziz Tchenka1,d, Jalila Hanyny2,e, Abdelkader El Kissani1,f, Layla El Gaini1,g, Nasser S.
El kissani: Visualization.
El Gaini: Ressources; Nasser.
Elmassi et al., “Effect of RF power on structural, optical and electrical properties of sputtered nickel oxide,” Phys.
Sebais, et al.

El- Sonbaty et. al, [4] investigated the influence of cutting speed and feed and fiber volume fraction on thrust and cutting force and demonstrated that cutting speed has less effect on thrust in drilling chopped fiber glass reinforced epoxy composites.
Paulo Davim et al. [8] established a correlation between cutting velocity and feed rate with thrust force and damage.
The experiments of Ramulu et al.[10] tried to characterize the effect of feed on the surface finish in drilling Gr/Bi.
[5] Miner L.H. , Kevlar Composites Symposium EL Segundo California, Society of Plastics Engineers, 1980, pp.85-93

[2] E.L.
Bordet, et al.: J.
Robert, et al.: Phys.
Robert, et al.: Physica B Vol. 385-386 (2006), p. 72
Mill, E.L.

Sayed et al. studied the radiation shielding performance to gamma rays of ilmenite/epoxy resin [5].
Kamoshida et al. developed a kind of epoxy resin based radiation shielding material which can be used in nuclear spent fuel storage containers [6].
Morioka et al invented a boron doped resin which can be used under 300 °C [7].
El-Khayatt: Ann.
El-Sarraf and F.

A python program is developed to model the geometry of SiCp/Al composites with various volume fractions of SiC particles.
Fig.1 shows the two-dimensional models of SiCp/Al composites with SiC reinforcement particles.
Fig.1 The geometrical model of SiCp/Al Fig. 2 The boundary conditions of the model composites Parameter setting The material properties of the 6061aluminum matrix and the SiC particles in SiCp/Al composites are defined separately due to their great difference.
By increasing the volume fraction of SiC particles in SiCp/Al composites, firstly with 20% vol.
[2] El-Gallab M S, Sklad M P, Machining of aluminum/silicon carbide particulate metal matrix composites: Part IV.

and for e > eL, (3) From the equations above, one can clearly see that if the the initial tangent modulus Eit and the strain at peak stress e0 are known for a given concrete compressive strength fc¢, the complete stress-strain curve for unconfined HSC under uniaxial compression can be obtained.
[9] Etest/Eitp ACI [10] Etest/Eitp CEB-FIP [1] Etest/Eitp Iravani [6] Etest/Eitp Rashid et al
Recent experimental data of normal weight concrete reported by Wee et al.[9], Mansur et al.[11], Zhang and Wu [12] and Iravani [6] is listed in Table 2.
Table 2 reveals the following: (1) Generally, CEB-FIP [1], Wee et al. [9] and ACI [10] overestimate the elastic modulus of HSC when compared with the test data; (2) NS3473 [8], Iravani [6] and Rashid et al. [2] give lower predictions than the experimental results; (3) An improved empirical model for predicting the elastic modulus becomes necessary and possible.
(4) where is taking the same values shown in Table 1 as those proposed by Rashid et al.[2].

According to EL-Safaty et al.[13] the more appropriate modulus of elasticity of a composite is the one which most closely approximates to the dentine so that tensions in the biologic structures do not occur.
Hosseinalipour et al.: J.
El-Safaty et al.: Dent Mater.
Hubbezoglu et.al.: Dent.
Freire et al.