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Al, Cu, Ni, brass, austentitic steels and Ti [16-20].
El Dasher, B.L.
El Dasher, T.
El Dasher, Y.
El Dasher, A.D.

Numerical Investigation of Power-Law Fluid Flows and Heat Transfer Inside of Curved Duct under Aiding Thermal Buoyancy Fayçal Bouzit1,a*, Houssem Laidoudi2,b, Bilal Blissag3,c, Mohamed Bouzit2, Abedallah Ghenaim4 1Laboratoire de mécanique appliquée (LMA), Faculté de Génie Mécanique, USTO-MB, BP 1505, El-Menaouer, Oran, 31000, Algérie 2Laboratoire des Sciences et Ingénierie Maritime (LSIM), Faculté de Génie Mécanique, USTO-MB, BP 1505, El-Menaouer, Oran, 31000, Algérie 3Département d’Hydraulique, USTO-MB, BP 1505, El-Menaouer, Oran, 31000, Algérie 4Laboratoire de Mécanique et Environnement ICUBE/INSA, Institut National des Sciences Appliquées, 24, Boulevard de la victoire , 67084, Strasbourg, France afaycal.bouzit@yahoo.fr, bhoussem.laidoudi@univ-usto.dz, cbilalblissag@gmail.com Keywords: Aiding buoyancy, Curved duct, Mixed Convection, Steady flow, Nusselt number.
Malheiro et al. [1] studied the incompressible flow inside of curved duct.
Chandratilleke et al. [4] numerically carried out the secondary vortex motion and associated forced convection heat transfer process in fluid flow inside a curved channel.
Majid Soleimani et al. [7] numerically investigated the fluid instability of non-Newtonian Bingham type in Taylor-Dean flow between two concentric cylinders at arbitrary gab spacing.
Ould El Moctar, H.

If used properly, it can not only curtail the environmental issue but also aid agricultural production as a natural fertilizer (El-Din et al., 2000; Hoitink et al., 1986).
Microbial additives of compost have been studied extensively (Kim et al., 2004; Nakai et al., 2004; Sasaki et al., 2006; Wakase et al., 2008), but few studies have been conducted to track the microbial additives throughout the entire process of composting.
DNA extractions and purification DNA was extracted according to protocols described previously (Zhou, et al., 1996; Zhang, et al., 2003), with the following modifications.
The dominant microorganisms in the natural compost of Pseudomonas sp. et al. became less or disappeared after added MA (band 10, 11, 12, 13) .
Technol. 100, 5444–5453 [3] El-Din, S.M.S.B., Attia, M., Abo-Sedera, S.A., 2000.

These findings are in agreement with Azlin et al [15] who reported that the porosity of the treated composite is inconstant as filler loading increased.
According to Elshereksi et al [16], the neat PMMA possessed slightly higher KIC properties than the PMMA composite.
At relatively low HA levels of up to 5 wt%, Chow et al [17] observed that the KIC of PMMA increased.
According to Fujishima et al and Zhao et al. [18, 19] respectively, the KIC for most DRCs range between 0.7 to 2.2 MPa.m1/2 depending on filler type, filler/matrix ratio, and testing method.
These findings are in agreement with Johnson et al [22] who observed that the KIC of the composite was reduced when the filler content was increased up to 44 wt%.

Sas-Boca et al. [1] presented FEM simulation on wire drawing process and realized the half approach angle has a high influence on drawing force.
El-Domiaty et al. [7] studied the thermal aspects of the wire-drawing process, and the results can be used for process parameter selection with the aim of minimizing temperature rise.
Kleinermann et al. [8] used FEM simulation to solve inverse problems such as parameters identification, initial geometry, and tool shape design.
Beland et al. [10] performed an optimization study on cold drawing process of 6063 aluminum tubes for minimizing the axial stress in the drawn tube as well as the drawing steps.
El-Domiaty, S.Z.

Figure 5 - XRD patterns for samples obtained by route 1 using elemental (EL) and TiAl pre-alloyed (PA) powders and route 2 using hot pressing (HP). 3.4.
As noted in the microstructural analysis, the route 1 using elemental powders (EL) presented the lowest density, reaching a densification of 85% in relation to the theoretical density of the alloy.
Thus, these results indicated the efficiency of the use of pre-alloyed Ti-Al powders and hot pressing in order to obtain a maximum densification of γ Ti-Al alloys.
Figure 6 - Plot of density vs. sintering temperature for route 1 - using elemental (EL) and pre-alloyed (PA) powders and route 2 - using pre-alloyed powders and hot pressing (HP).
Darolia et al (Eds.), TiAl Compounds for Structural Applications.

El-Axi and M.M.
El-Khabeery: Journal of Materials Processing Technology, (2003), p. 82-89 [3] D.P.
Zhu, et al: China Surface Engineering, (2007), p. 38-41 (in Chinese)

References [1] AGGARWAL P, SYED Z, NOURELDIN A, et al.
[4] HAMID W A, NOURELDIN A, EL-SHEIMY N.
[6] NOURELDIN A, EL-SHAFI A, BAYOUMI M.

Under the excitations of the two horizontal components motions of Loma, San Fernando and El Centro earthquakes, the global damage process of the structure is shown in figure 3, and the damage evolution of each story are shown in figure 4.
From figure 3, it is indicated that under 0.683g Loma Prieta, San Fernando and El Centro earthquakes, the global damage index are 0.0162, 0.0119 and 0.0122, and it is close to collapse at the PGA (Peak Ground Acceleration) of 1.23g.
Steglich, et al.: Int J Plasticity Vol.22-11 (2006), p 2146 [5] O.S.

In the research process and experiment, we found there are many high precision instruments like scanning electron microscopy (SEM), morphology instrument et al… to measure the sample’s surface topography, however, due to the special requirements of these equipments that they could not meet the need of all kinds of measurement.
[5] Yashiro S, Takatsubo J, Miyauchi H el a1.. : A Novel Technique for Visualizing Ultrasonic Waves in General Solid Media by Pulsed Laser Scanr.
[6] Xiaobo Hou, Afshin Daryoush, Warren Rosen el a1.. : A Novel All-Optical Analog-to-Digital Converter.