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Methodology A nanocomposite of Fe2O3-Al2O3 was prepared by the sol-gel method, where aluminum nitrate nonahydrate, Al(NO3)3·9H2O and ferric nitrate nonahydrate, Fe(NO3)3·9H2O was used as the Al3+ and Fe3+ precursor and distilled water as solvent.
As discussed by Healy et al. (1975), the linearity of these graphs is a reflection of the stabilized oil bank formed ahead of the displacing fluid, which is in this current experiment, the cobalt-iron ferrite nanofluid [21].
El-Diasty, Benefits and Applications of Nanotechnology in Oil Industries: Upstream and Downstream Operations- Egypt, Petroleum Today. 16 (2013)28-38
Yahya et al, Cobalt Ferrite Nanoparticles: An Innovative Approach for Enhanced Oil Recovery Application, J.

The diameter of the SiCp/Al bars was 25mm and the length was 15mm.
El-Gallab and M.
Zhong, et al.: Mach.
To, et al.: Scr.
Yang, et al.: J.

Coney et al[3].numerically analyzed the 1-D fully wet fin efficiency for a rectangular fin with combined heat and mass transfer.
El-Shafei: submitted to International Journal of Heat and Fluid Flow(1989)
[4] Rosario, L. et al.: submitted to ASME Journal of Energy Resources Technology (1998)
Sharqawy et al.: submitted to International Journal of Thermal Sciences, (2009)
K.et al.: submitted to International Journal of Heat and Fluid Flow (1992)

Ramsey et al [12] obtained a collector efficiency of 50% at 300°C for a selective coated heat pipe collector using single axis tracking parabolic trough concentrator.
Hussein et al [19] carried out a study on optimization of a wickless heat pipe flat plate solar collector.
A study on heat pipe enhanced solar-assisted heat pump water heater was conducted by Huang et al [22].
Riffat et al [23] studied developing a theoretical model to investigate thermal performance of a thin membrane heat-pipe solar collector.
El-Asfouri, “Optimization of a Wickless Heat Pipe Flat Plate Solar Collector”, Ener.

The Al-5Ti-1B master alloy was added for grain refinement.
Thesis, NCKU, Tainan, Taiwan, ROC (1990) [2] E.L.
Lin, K.Murahami, and T.Okamoto, “Internal and External Shrinkages in Undirectionally Solidified Al-4.5wt.
Chieu, “Modeling of Feeding Behavior of Solidifying Al-7Si-0.3Mg Alloy Plate Casting,” Metall.
Berry, “Effects of Solidification Conditions on Mechanical Behavior of Al Cast Alloys,” AFS Trans.

Reyes et al. [1] conducted the optimal pr˚Cess of solar thermal energy conversion and design optimization of irreversible flat-plate solar collector based on energy analysis for different geometry of system and derived different formula.
Metwally et al. [2] carried out an experimental investigation on an advanced corrugated duct solar collector.
Tayagi et al. [3] investigated energy analysis and parametric study of concentrating type solar collectors.
This topic has been studied by some others such as Han et al. [8-10], Lau et al. [11-13], Karwa [14], Gupta [15], and so on.
[2] Metwally MN, Abou-Ziyan HZ, El-Leathy AM.

DPPH radical scavenging activity was determined according to the method of Wu et al [6].
Lipid peroxidation inhibition activity was determined according to the method of You et al [8].
Similarly, Wang et al found the ferrous-binding capacity was improved when the mass ratio of yak casein hydrolysate to FeSO4 was increased from 1:1 to 15:1 [9].
Deng et al also found that the biological material of protein hydrolysates chelated with ferrous ions could improve the antioxidant activity of the hydrolysates in the linoleic acid system [10].
El-Sayed: Tilapia Culture (CABI publishing, UK 2006)

Omganti et al. studied on single phase power factor correction.
An intelligent power factor corrector for power system using artificial neural networks has been studied by Bayindir et al.
A proposed design by consideration and organize plan for resonant inverter and power factor correction has been presented by Azcondo et al. [5].
While power factor correction based on artificial neural network was discussed and presented by Sagiroglu et al.
El-Moniem, H.

In Japan, Sankai et al [1, 2] at Tsukuba University has developed a lightweight power assist device, Hybrid Assistive Limb (HAL).
Kazerooni et al [3] at the University of California, Berkeley, has developed BLEEX, primarily for military purposes.
Prabir et al [5] presented a free gait generation of a quadruped walking machine.
Aphiratsakun et al explained how the simulation model of ALEX has been created in [7].
Aphiratsakun at el [6] demonstrated how gait motion trajectory and its interpolation data were generated in the previous work.

Al-based and Fe-based salts are widely used inorganic coagulant in water treatment.
However, the residual Al in finished water has accumulation harm to human body and animal tissue [3].
In addition, it has been widely recognized that removal of OMs by Fe-based coagulant was superior to that by Al-based salts [4].
ORP of SOPSF with different Fe concentration 0.18 mol.L-1, 0.09 mol.L-1 and 0.018 mol.L-1 was measured, in comparison with those of PSF and PFA (as Al concentration).
Vol. 42 (2008), p. 2278 [3] E.L.