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Saadawy3,d 1Pharos University, Canal El Mahmohya,Smouha, Alexandria, Egypt 2El Mansoura university, El Gomhoria street, El-Mansoura, Egypt 3,4Alexandria University, Tarea El Horia, Alexandria , Egypt.
Al-Sabagh, Corrosion inhibition of mild steel in 1 M sulfuric acid solution using anionic surfactant, 85 (2004) 273-279
Al-Rawashded, Corros.
Al-Sarawy, E.E.
El-Katori, Desalination 201 (2006) 1–13

Brunkard et al. [3] assessed the relationships between long-term El Niño Southern Oscillation (ENSO)-related weather and microclimate on dengue incidence by using ARIMA with exogenous input (ARIMAX).
Using these approaches, dengue fever was strongly correlated with the occurrence of El Niño weather pattern.
[10] Xu HY, et al.
Meteorological factors and El Niño Southern Oscillation are independently associated with dengue infections.
[22] Li C, et al.

Geometrically Nonlinear Free Axisymmetric Vibrations Analysis of Thin Circular Functionally Graded Plates El Kaak Rachid1, a, El Bikri Khalid1, a and Benamar Rhali2,b 1 Université Mohammed V-Souissi, Ecole Normale Supérieure de l’Enseignement Technique, Rabat, Département de Génie Mécanique, LaMIPI, B.P.6207, Rabat Instituts, Rabat, Morocco. 2 Université Mohammed V-Agdal, Ecole Mohammadia d’ingénieurs, LERSIM, B.P. 765, Agdal, Morocco.
Allahverdizadeh et al. [2] investigated the nonlinear free and forced vibration of thin circular functionally graded plate.
Malekzadeh et al. [11] discussed the in-plane free vibration of functionally graded circular arches with temperature-dependent properties under thermal environment.
El Kadiri, R.
El Bikri, R.

The microstructure of the as-cast specimens mainly consisted of matrix-α (Al) and grain boundary (GB)-eutectic phase (α-Al + Mg(Zn,Cu,Al)2).
It is a heat treatable Al-Zn-Mg-Cu alloy.
Therefore, most of bright GB phases should be quaternary Mg(Zn,Cu,Al)2 phase in that some Al and Cu atoms have dissolved in the η-phase and form the same crystallographic lattice constant as MgZn2, as reported by Deng et.al [4].
Conclusions From the above study and experimental results it can be concluded that as-cast samples consist of two main phases: a non-dendritic grain structure of α-Al phase and grain boundary eutectic phase (α-Al+ Mg(Zn,Cu,Al)2).
Copley, E.L.

El-Sayed et al. [26] reported synthesis and antimicrobial evaluation of several quinoline and pyrimidoquinoline derivatives.
El-Sayed, E.
El-Sayed, B.A.
Al-Bassam, M.E.
El-Abadelah, F.

Coherency loss of Al3Sc precipitates during ageing of dilute Al-Sc alloys D.
The need for cost reduction due to the high price of scandium has led to the development of dilute Al-Sc alloys.
The particular system exhibits the highest specific hardening as compared to the other commercial Al alloys [1,2].
For the production of the billet, high purity aluminium (99.999%) and an Al-2 wt%Sc master alloy had been used.
Hatherly, Recrystallization and Related Annealing Phenomena (2 nd Ed.), Elsevier (2004) [11] E.L.

To consider exchange and correlation effect to the dielectric function, the local-field correction function proposed by Farid et al is employed in the present study.
For describing the electron-ion interaction we have used the potential proposed by Jivani et al [6-13], which is of the form:
In this study, the exchange-correlation function proposed by Farid et al [14] is employed to study various properties of HgX systems investigated by pseudopotential method.
El Haj Hassan, B.
Al Shafaay, H.

El, % 32,0 34,0 36,0 38,0 40,0 42,0 1 2 3 4 5 r - value 0,85 0,90 0,95 1,00 1,05 1,10 1 2 3 4 5 YS, MPa 0 50 100 150 200 1 2 3 4 5 A B C D E A B C D E A B C D E Fig. 2.
The effect of partial substitution of Ti by Nb on the mechanical properties of hot-rolled IF steel sheets is presented in Fig. 3 for the examples of austenitic rolling regime A and ferritic rolling regime B. 0 50 100 150 200 250 300 350 Ti IF steel Ti+Nb IF steel 0 50 100 150 200 250 300 350 Ti IF steel Ti+Nb IF steel YS, MPa TS, MPa El, % r value * 100 n value * 1000 YS, MPa TS, MPa El, % r value * 100 n value * 1000 Fig. 3.
The skin-pass rolling with 2% reduction resulted in slight increase of yield strength values (∆YS ≈ 20-30 MPa) and, correspondingly, slight decrease of elongation (∆El ≈ 2-4 %).
El, % 32,00 34,00 36,00 38,00 40,00 42,00 1 2 3 4 5 r - value 0,00 0,50 1,00 1,50 2,00 2,50 1 2 3 4 5 YS, MPa 0 50 100 150 200 1 2 3 4 5 A B C D E A B C D E A B C D E Fig. 4.
These are complex precipitates with varying amounts of Ti, Mn, S and N, and sometimes also Al, Si and B.

El-Darwish, M.
Al-Homoud, Performance characteristics and practical applications of common building thermal insulation materials, Build.
El Majd, M.
El-Kammar, H.
El Fadar, Energy, economic and environmental benefits of integrating passive design strategies into buildings: A review, Renew.

El Kadi and Ellyin [6] as well as Justo et al. [7] showed that a slight variation of the test frequency leads to an identical number of failure cycles, therefore the test results were presented in the following evaluations and in the combined result presentations independently of the test frequency.
El Kadi, F.