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Hanafi et al. estimated cutting parameters in turning of PEEK-CF30 using TiN tools under dry machining, to attain minimum power consumption and the best surface quality using Taguchi and grey relational method [4].
Another work was a study into the effects of cutting parameters and nose radius in turning of 7075 Al alloy SiC composite to minimize power consumption and maximize tool life [5].
Xiao, Machining Science and Technology. 12(3) (2008), p.325-347 [10] El-Hossainy, T.M., A.A.
El-Zoghby, M.A.

Kulkarnia at el [1] studied the ratcheting in pressured straight piping under cyclic bending load using four points bending equipment and analyzed the ratcheting strain with the Chaboche constitutive model in ANSYS.
Yahiaoui at el [2] discussed the location where the ratcheting may happen based on the elastic finite element analysis results in the elbow under in-plane cyclic bending load.
Gao et al [3] analyzed the cyclic plasticity in pressured elbow under out-plane bending load using finite element method and perfect elastic-plastic model.
Gao et al [6] has concluded that the ratcheting strain mainly occurred in circumference.

EDX spectra of the geopolymer in Fig. 2 (d), shows peaks of Na, Si, Al, and O, which shows it has had elements of standard geopolymer [6].
In addition, the ratio of Si/Al was 1.12, which is almost equal to the theoretical value for Na-poly (sialate) in which the ratio of Si/Al equal one.
El-Molla, Dehydrogenation and condensation in catalytic conversion of iso-propanol over CuO/MgO system doped with Li2O and ZrO2, Appl.
El-Molla, S.M.
El-Mollab, A.I.

Jahangirian et al. [6] studied the thermal and chemical structures of highly diluted biogas by N2 in counter-flow diffusion flames.
Galletti at el [15] illustrated that in a 300-kw chamber the rate of NOx emission decreases dramatically from 1500 ppm in conventional combustion down to 100 ppm in flameless mode by applying recuperators.
Derudi et al. [36] shows biomass gas with low calorific value should be applied under thecondition of high recirculation rate at Kv>5 and high furnace temperatures more than 8000C in flameless combustion system.
Szegö et al.[27] illustrated CO emission in very high diluted flameless mode is more than traditional flame, because in conventional mode the concentration of hydroxyl radial (OH) which controls transformation of CO into CO2 decreases.
[34] Effuggi A, Gelosa D, Derudi M, et al.

[3]Jin Q,Zhang H.M,Yan L.Sh,et al.
V,Alenzuela Olarte, et al.
[13]Su H.F, Wen Y.X, Wang F, et al.
[17]Lasheen T A, El-Hazek M N, Helal A S, et al.
[18]Lasheen T A, El-Hazek M N, Helal A S.

Based on the results, the preferred orientation of Cu2O thin films were [111] consistent with the previous finding byFariza et al. [2].
El Hajj had concluded that the cracks were associated with either the formation of gas bubbles, to the dehydration process itself or from the shearing stress between the substrate and the deposition [14].From the cross-sectional image, the thickness of n-type Cu2O thin film obtained was approximately 3.56 µm.
This finding is parallel to the previous study by Asyikin et al. which showed an offset of absorbance at about 600nm for Cu2O thin film[15].From the absorbance obtained, the absorbance coefficient satisfies the equation (αhv)2= A(hv-Eg) for a direct gap material.
This finding was equivalent with earlier report by El Shaer et al. which revealed that the band gap for Cu2O thin film is about 1.80 -2.16 eV [8].
El Hajji, a.

Then at ~800 to ~850 cm-1, the presence of NZ may have contributed to internal vibrations of Si–O and Al–O which were more pronounced at 0.25 and 0.75% NZ content.
El-Sayed, and A.
El Bhilat, A.
El Had, “Characterization and processability of post-consumer, double-recycled high impact polystyrene from disposable cups,” Mater.
Hamzah et al., “Synthesis, characterisation and evaluation on the performance of ferrofluid for microplastic removal from synthetic and actual wastewater,” J.

Higher content of Al in TiAl-Nb alloy results in bigger Coefficient of thermal expansion.
%Al[16-18].
The coefficients rised with the increasing content of Al.
El-Rahman, M.
El-Hossary, F.

Pre-aging and Maturing Effects on the Precipitation Hardening of an Al-Mg-Si Alloy T.
Hamamda a (a) Laboratory of Themodynamic and treatment of surface of Materials, Physics Institue Mentouri University, Road Ain -El Bey, Constantine, 25000, Algeria abidtah@yahoo.fr Keywords: Al-Mg-Si Alloy, DSC, Reaction kinetic, Activation energy, Precipitation hardening Abstract.
Experimental procedure The examined material is an Al-Mg-Si alloy with excess of silicon.
This effect has been already observed by Marioara et al. [10].
This result is in agreement with the work undertaken by Miao et al. [3].

Similar results have been reported by Zhang et al., [14].
El-Zahhar, N.
El-Shafey, S.
Al-Busafi, and H.
Al-Degs, M.