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Accordingly, a nominal film thickness t was used to characterize the average film thickness for each coating process that was calculated by the following equation, t=mNi-P/SVrNi-P (1) a b where mNi-P is the mass of Ni-P film; S is the specific surface area of initial Al foam; V is the volume of foam samples, and rNi-P is the density of amorphous Ni-P (the mass fraction of P is 10.2%, rNi-P =7.9g cm-3).
El-Khatib, E.

Sample number Components weight content % С Si Mn Cr Ni Mo V Co W Al Cu Ti S P 1G9 0.19 0.77 0.61 4.17 0.34 0.38 0.02 0.05 0.002 0.01 0.07 0.02 0.054 0.024 2G10 0.19 0.63 0.65 4.06 0.3 0.38 0.03 0.06 0.001 0.01 0.08 0.03 0.056 0.019 3G11 0.2 0.59 0.61 4.12 0.3 0.38 0.02 0.12 0.001 0.02 0.06 0.04 0.049 0.019 4G12 0.2 0.64 0.6 4.03 0.3 0.39 0.03 0.2 0.002 0.01 0.08 0.03 0.058 0.021 5G13 0.2 0.59 0.56 0.01 0.3 0.33 0.01 0.05 7.74 0.01 0.1 0.02 0.072 0.017 6G14 0.2 0.55 0.49 0.01 0.26 0.34 0.01 0.07 7.42 0.02 0.09 0.02 0.048 0.014 7G15 0.2 0.58 0.52 0.01 0.28 0.34 0.01 0.07 7.55 0.05 0.09 0.03 0.038 0.014 8G16 0.21 0.55 0.52 0.01 0.27 0.35 0.02 0.06 7.65 0.05 0.08 0.02 0.036 0.017 Table 2.
El-Mahallawi, R.

Nature, 2000,406 (6) :39-42 [4] EI-Gallad Al, El-Hawary ME, Sallam A.

Comparative study of spwm and hepwm techniques for photovoltaic inverter BENDIB D1, a, AKEL F1, CHIKH M1, LARBES C2, LAOUR M1 and MAHRANE A1 1Unité de Développement des Equipements Solaires /Centre de développement des énergies renouvelables, UDES RN N°11, Bou-Ismail, 42415, Tipaza, Algérie 2Laboratoire de Dispositifs de Communication et de Conversion Photovoltaïque LDCCP Ecole Nationale Polytechnique d’ALGER, 10 av Hassan Badi BP 182, El Harrach Alger, Algérie abendib.douadi@gmail.com Keywords: pulse width modulation, pv array, voltage source inverter, sinusoidal modulation, harmonic elimination, maximum power point, power quality.
Mahrane et al.

[6] Zhu Jian, Yu-Yuan Wei, Chen Chen , Zhang Yong, Lu Le, “A Compact 5-bit Switched-line Digital MEMS Phase Shifter”,Proceedings of the 1st IEEE InternationalConference on Nano/Micro Engineered and Molecular Systems ,January 18 - 21, 2006, Zhuhai, China [7] Zhu J, Zhou B Lin, el al, "A 4-bit digital MEMS phase shifter" [A],Proc.

References [1] Tawfik A, El-Gohary F, Ohashi A, et al.

Sanlúcar Km 7. 11510, El Puerto de Santa María, Cádiz.
Element Si Fe Cu Mn Mg Zn Cr Ti Ga V Al 2024-T3 0.10 0.22 4.11 0.56 1.34 0.13 0.01 0.01 0.01 <0.01 93.49 5083-T0 0.10 0.30 0.02 0.50 4.22 <0.01 0.08 0.02 0.01 0.01 94.73 6082-T6 1.03 0.34 0.06 0.57 0.87 0.01 0.01 0.03 0.01 <0.01 97.04 7075-T6 0.06 0.16 1.25 0.08 2.32 5.47 0.20 0.01 0.01 0.01 90.41 Butt welding was carried out on the aluminium alloys samples using a high power diode laser with a maximum power of 2.8kW (DL028S of Rofin).

El-Sayed, TiO2 nanotube/CdS hybrid electrodes:extraordinary enhancement in the inactivation of Escherichia coli, J.
[5] A.L.

Anyhow, there are still some aerodynamic problems to be urgently solved, such as low-speed start, vibration caused by fluctuating wind or random gust, static stall, dynamic stall et al.
Acknowledgements This work was financially supported by high-level personnel research start-up project of North China University of Water Resources and Electric Power (001391) References [1] Mohamed Gad-EL-Hak, Flow Control,passive,active,and reactive flow management[M], Cambridge University,2000 [2] Liebeck R H.

Hvilsted, A.L.
El-Waily, Electrical and mechanical properties of aluminum-loaded NBR composites, J.