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Hwang et al. have developed a model which considers the bulged area as an elliptical surface [3].
Bortot et al. have measured geometrical features during the tube hydroforming to determine the flow stress [4].
Valesco et al. have suggested a method based on geometric observations of a circular profile of a bulged tube [5].
Strano et al. have suggested an inverse energy approach to determine the flow stress of tubular materials and assuming isotropic behavior [8].
Xu et al. proposed an adaptive inverse finite element method for tubular materials [9].

Putri, et al. [11] studied the potential of Zea mays and Parki a speciosa hassk as alternative biosorbent to remove lead waste.
Sajjadi, et al. [6] have worked on a novel route for production of activated carbon made from pistachio wood for adsorption of Pb(II).
Liang, et al. [13] reported about removal of heavy metals  (i.e.
Schwantes, et al. [15] reported about the use of cassava as natural adsorbent to remove Cr(III) from industrial wastewater.
El-Shahat, “Removal of lead ions from industrial waste water by different types of natural materials,” Water Res., vol. 37, no. 7, pp. 1678–1683, 2003

%Al-1wt.
Experimental A bar of 30 mm in diameter from the alloy containing (wt %) 4.5 Al, 1.3 Zn, 0.5 Mn, 0.025 Cu, 0.002 Ni; 0.05 Si, 0.001 Be, 0.02 Fe, and Mg as a base was used as the initial material after pressing and annealing at 345 °C (1 h, cooling in air).
Mechanical properties (a-YS; b-EL) of MA2-1 alloy at Testing = 20 ºC after different regimes:1 - initial state; 2 - 4A ECAP and annealing;3 - 4Bc ECAP and annealing.
Gottstein and T.Al.

Valiev, et al., Adv.
Macht, et al., Rev.
Kraposhin, A.L.
Glezer, et al., Mater.
El-Eskandarany, K.

For examples, Kim et al.[1] have reported that an SnO2 sputtered film co-doped with Pt and Pd shows a high sensitivity to CO and CH4.
Kunimoto et al. deposited films under different discharge gas pressures.
This result is similar to that previously reported by Kunimoto et al.[10] and Yamazaki et al.[11].
Similarly to the results reported by Korotcenkov et al.[2], Pd doping improves both sensitivity and response time to H2 gas.
Dolbec, MA El Khakani, A M Serventi and R G Saint-Jacques: Sens.

Historical background The first observation of a multi quantum well (MQW) structure in hexagonal SiC polytypes was reported by Fissel et al [1,4].
Independently Shridhara et al [5] reported in 4H-SiC a new set of the photoluminescence lines (again at high energy with respect to the bulk 3C-SiC polytype) that they attributed to a 3C-SF.
Finally, Bai et al [13] observed several sets of LTPL lines which appeared in between the specific range of narrow 4H and 3C bound exciton lines.
Further refinement was achieved by Bai el al [15].
We believe that they are the intrinsic doublet signature of the same type II QW system previously identified by Skromme et al. [16] as a 7 BLs SF.

The chemical composition of spinelides in picrite varies considerably and ranges from chromite-rich Al to Ti-magnetite.
The following elements were analyzed: Mg, Al, Si, P, S, K, Ca, Ti, Cr, Mn, Ni, Co, Cu, Zn, As, Rb, Sr, Mo, Pb, Th, Zr, and Y.
According to Frouz et al. [12], pH is the most important factor affecting the toxicity.
The importance of pH in reproduction of F. candida has been also shown by Chapman et al. [6].
According to Marks et al. [14], biochar properties can be significantly affected by the applied pyrolysis technology.

Effect of Laser Cutting Parameters on the Heat Affected Zone and on the Boundary Layer in Steel Laser Processing AGGOUNE Samia1,a*, ABID Cherifa2,b and AMARA El Hachemi1,c 1Advanced technologies development center, Laser material processing team, B.
Miraoui et al, have given the suitable parameters to get better quality of cut.
Vicanek et al
Raza et al., Laser cutting of 7050 Al alloy reinforced with Al2O3 and B4C composites, Te International Journal of Advanced Manufacturing Technology. vol.50, no.1–4, (2010) 185–193
[11] Al-Ali, H.H. and Selim, M.S.

Al-Baghdadi. 
Kenai, E.L.
Al-Fayez.
El-Karmoty, M.
[73] E.L.

Huan Luo et al [12] investigated Structural properties of calcium chalcogenides compression up to 52 GPa using energy-dispersive x-ray-diffraction techniques.
Jha et al [26] and Mahendra Aynyas et al [4] investigated phase transition and related properties of calcium chalcogenides at high pressure respectively using three body potential model and two body inter ionic potential approach with modified ionic charge (Zm).
Slimani et al[3] studied the structural, electronic, optical and thermodynamic properties of CaS1−xTex, CaSe1−xTex and CaS1−xSex using ab initio method.
El Haj Hassan “Ab initio investigations of calcium chalcogenide alloys” Journal of Alloys and Compounds 485 642–647, (2009) [4] B.S.
Li, A.L.