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As explained by El Fgaier et al [10] an increase of the water content leads to higher amount of water in the sample’s porosities, replacing air.
The influence of the vegetable aggregates on the sorption/desorption properties is not clearly significant as shown by Belayachi et al [11] for different straws in straw concretes.
El Fgaier et al study [10] showed that mass moisture content of unfired clay bricks could reached 3.5% at 95%HR.
El Fgaier, Z.

Abd-El-Khalek3,c and E.
[14] Al-Dahiri, R.H., A.M.
El-Mahdy, and H.A.J.I.J.o.E.S.
[18] Shao, W., et al.
-M., et al., Ceramic materials based on clay minerals in cultural heritage study.

Jeong et al. [6] investigated the effect of using ruthenium as a promoter for Ni catalysts supported on different carriers.
Experimental Co6Al2 hydrotalcite was prepared by precipitating appropriate quantities of Co(NO3)2.6H2O (SIGMA-ALDRICH, 98%) and Al(NO3)3.9H2O (FLUKA, 98%) into 1M sodium carbonate Na2CO3 (HIMEDIA, 98%) solution at 60°C.
El Nakat, B.
El Khoury, P.

Al-Shamsi, H.
Al-Jabri, M.
Al-Alawi, Utilization of slag as an aggregate replacement for road base/subbase layers, IOP Conf.
El-Dieb, M.S.
Hadjadj, A. el Aziz Cherati, F.

Besides, the contents of C, H, O, N, S were measured by elemental analysis instrument of Vario EL III.
Most sludge is currently landfilled or incinerated (Beauchamp et al. 2002).
Recent studies have proposed recycling pulp and paper sludge in wood-based panels (Davis et al 2003; Geng et al 2006, 2007a, 2007b; Taramian et al 2007).
Their contents of carbon, hydrogen, oxygen, nitrogen and sulfur were performed in elemental analysis instrument of Vario EL III (made in Germany) for bamboo paper sludge.

Wu et al. explored material removal effects for micro-deburring applications using ultrasonic cavitation [3].
The effects of ultrasonic based machining with nanocrystals on improving surface finish of 3D-printed material has been explored by Ma el at. [4].
Ye et al examined the effect of micro-jet impact by imploding cavitation bubbles using ultrasonic horn placed above [5] and at angular positions with respect to the surface [6].
Additional studies had also been made by Huang et al. examining the effect of abrasive particle concentration and hardness [8].
Based on a study carried out by Moussatov el at, the structure of the ultrasonic cavitation field is found to be cone-shaped with its tip located along the central axis of the ultrasonic horn [9].

The room-temperature tensile properties including 0.2% yield stress (YS), ultimate tensile stress (UTS) and elongation to fracture (EL) of these modified alloys and Ti-22Al27Nb were listed in Table 2.
Another explanation was suggested as that, the V is an effective element in improving the room-temperature ductility of Ti-Al and Ti2AlNb-based intermetallic alloys.
Banerjee et al: Acta Metall.
Gogia et al: Intermetallics Vol.6 (1998), p.741
Mao et al: Intermetallics Vol. 8(2000), p.659

Moreover, there existed about 6.24 wt% Al in the matrix material as shown in Fig.3 (a).
Table 1 The relative content of element at the zone A and B for 1# reamer El AN Series C norm.
[at%] C Error[%] A B A B A B O 8 K-series 13.39 2.11 43.40 11.04 2.0 0.5 W 74 M-series 68.86 79.26 19.43 36.00 2.8 3.3 C 6 K-series 4.38 4.80 18.89 33.36 0.8 0.9 Al 13 K-series 6.24 - 11.99 - 0.3 - Co 27 L-series 7.14 13.83 6.28 19.59 1.3 2.3 Fig.4 shows the results of energy spectrum analysis of 2# reamer at the zone A and B, and Table 2 shows the element content.
Table 2 The relative content of element at the zone A and B for 2# reamer El AN Series C norm.
Conclusions (1) The two reamers’ matrix materials should belong to the WC-Co cemented carbide according to chemical composition analysis. 1# reamer had some Al element in the matrix material

Al-Mobarak, A.
Al-Swayih , F.
Al-Rashoud, Corrosion Behavior of Ti-6Al-7Nb Alloy in Biological Solution for Dentistry Applications, Int.
El-Shenawy, T.
El-Bitar, Electrochemical Impedance Spectroscopy Study of the Corrosion Behavior of Some Niobium Bearing Stainless Steels in 3.5% NaCl.

Badawib Faculty of Science, Physics Department, El-Minia University PO 61519 El-Minia, Egypt a allaaldeenahmad@yahoo.com, bemadbadawi@yahoo.com Keywords: HV Values, Mean Lifetime Values, Natural Aging Abstract The aim of this work was to produce a high strength 6xxx series Aluminum alloy by adjusting the processing conditions, namely solutionizing and natural aging.
The mechanical characterization of heat treatable 6xxx (Al-Mg-Si-Cu based) 6066, 6063 wrought aluminum alloys was studied.
Results Aluminum alloys of the 6xxx (Al- Mg-Si) series are employed worldwide in the manufacturing of extruded sections.
During natural or artificial aging, Al-Mg-Si alloys first produce clusters of a few nm sizes.
Al-Marahleh, Am.