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Some research has been done on elastic properties of rare-earth doped glass such as BiB2O3.Gd2O3 (Saddeek, 2012)[2], TeO2.V2O5.CeO2 (Mallawany et al, 2000c)[3], P2O5.Sm2O3 (Sidek et al,1988)[4] and P2O5.La2O3 (Mierzejewski et al,1988)[5].
According to Gebavi et al in 2009, when Tm3+ is added into a glass system, it acts as a network modifier which produced cleavage of the glass network and creates non-bridging oxygens, NBOs [10].
According to Balaji et al (2014), Poisson’s ratio is a measure of cross-link density in the glass network.
El-Mallawany, M.
Al-Shamiri, A.

Ziar2,3, A.L.
The so-called copper texture develops in almost all the pure CFC metals (Cu, Al, Ni) or weakly alloyed after rolling at low temperature.
According to the work of Zidani et al [8-10] when the level of deformation increases, the drawn wire acquired a textured microstructure (fibrous texture).
Works have shown that the electrical resistivity increases with the content of impurities and this linearly for very low grades up to 0.2%, Pops et al [16].
Baira, M.Bayarassou, A.L.

., et al.
[6] Schneider,k., Chen-Ching Liu, McGinnis,T., et al.
[7] Person, R., Beranzoli, L., Berndt, C, el al.
[8] Kojima,J, Howe,BM., Asakawa,K., et al.

Chemical composition (%) of aluminum alloy, type AA6016-T4 Mg Si Fe Cu Cr Ti Mn Zn Others Al 0.25-0.6 1.0-1.5 0.5 0.2 0.10 0.15 0.20 0.20 £0.15 Balanced Table 2.
Chemical composition (%) of copper-zinc alloy, type CuZn37 Cu Ni Cu Fe Sn Al Others Zn 62-65 0.25 £1 £0.1 £0.1 0.05 £0.1 Balanced Alloy 4043 is one of the oldest and most widely used for filler metal brazing alloys.
Chemical composition (%) of 4043 alloy Si Fe Cu Fe Mg Zn Ti Be Others Al 4.5-6 0.8 0.3 £0.1 0.05 0.1 0.2 0.0003 £0.1 Balanced Drawing Part.
Brinkman, Crystal-plasticity simulation of the correlation of microtexture and roping in AA 6xxx Al–Mg–Si sheet alloys for automotive applications, Acta Materialia. 60 (2012) 5217–5232
El-Magd, Behaviour of Cu-Zn alloys in high speed shear tests and in chip formation processes, Materials Science and Engineering.

Introduction Bulk amorphous alloys with a wide supercooled liquid region in a number of alloy systems, including Mg-TM-Ln, Ln-Al-TM, (Zr, Hf)-Al-TM (TM = Fe, Co, Ni, and Cu) and Zr-Al-Cu-Ni, has been prepared successfully by Inoue and his coworkers [1-3].
Inoue et al. [16] suggested that large atomic size ratios, attractive bonding nature between the constituent elements, and the difficulty of redistributing these elements for crystallization are dominant factors for the increase in glass-forming ability and the appearance of a wide supercooled liquid region.
El-Eskandarany, K.

Huang Lei et al [12] fabricated a series of Bi2O3 by hydrothermal method and studied the application of photocatalytic.
Fan Qin et al [13] have fabricated Bi2O3 and (BiO)2CO3 nanotubes and studied its water treatment abilities.
Xu Zhao et al [14] reported Bi2O3/TiO2 to be efficient to photocatalytic degradation under visible light irradiation.
Zheng Yu et al have reported a facile solvothermal synthesis of porous Bi2O3 microsphere and their photocatalytic performance under visible light.
El-Amin, Int.

Zinc sulfide nanoparticles doped with manganese has been the most efficient electroluminescent (EL) phosphor material over the years and has been extensively studied for their enhanced quantum efficiency, increased luminescence intensity and shortened life time [6-8].
Both the samples exhibit three diffraction peaks corresponding to the (1 1 1), (2 2 0) and (3 1 1) reflection planes of cubic Zinc blende structure, consistent with that reported by Nagalingam Saravanan et.al [22] and standard card (JCPDS no. 79-0043).
Similar results have been reported by Qi Xiao et al [24] and G.
Murugadoss et al [25].
Sooklal et al. [27] found that Mn2+ incorporated into the ZnS lattice led to the Mn2+ based orange emission while ZnS with surface-bound Mn2+ yielded the ultraviolet emission.

Thipprakmas et al. [8] investigated process parameters such as bending angle, material thickness and punch using finite element method (FEM), in association with the analysis of variance (ANOVA) and the Taguchi techniques in V-bending test process.
Ján Slota et al. [9] used a modern measurement method performed in MATLAB and numerical simulation of air bending process in explicit and implicit finite element method (FEM) Pam - Stamp.
Peng et al. [10] conducted studied on simulation prediction spingback from the three constitutive models are compared with experiment with the Yoshida-Uemori, the 3-parameter Barlat and transversely anisotropic elasto-plastic model.
Abd.aziz Alghtani et al. [11] was conducted simulation analysis of the springback in U-bending using the Yoshida model in LS-DYNA.
El-Mokaddem: Journal of Achievements in Materials and Manufacturing Engineering, vol. 38 (2010) p. 8-12

Affected by the unstable structures, difluoroamino compounds have not been practically use until 1980th, while Chapman et al [2] found the similar cyclic structure with cyclotrimethylenetrinitramine (RDX) or cyclotetramethylenetetranitroamine (HMX) to keep difluoroamino group stable.
The elemental CHN analysis was performed on a Elementar Vario EL III instrument, while elemental F analysis was measured in a Metrohm 905 Titrando.
Sun, et al, Tetrahedron Lett. 42 (2001) 2621-2623
Olah, et al, Chem.
Boatz, et al, Angew.

Razek et al., [2] studied about the causes of delay in building construction projects in Egypt.
Abdalla et al., [1] studied the causes of construction delay in traditional contracts.
Acharya et al [4] studied about the analysis of construction delay factor in a Korean perspective.
[2] Abd El-Razek.M.E., Bassioni .H.A.and Mobarak.A.M., ‘Causes of delay in building construction Projects in Egypt’, Journal of Construction Engineering and Management, Vol 134 (2008), No. 11, p. (831-841)
[4] Nirmal Kumar Acharya, Young Dai Lee, Soo Yong Kim and Jong Chool Lee, ‘Analysis of Construction Delay Factor: A Korean Perspective’, Proceeding of the 7th Asia Pacific Industrial Engineering and management Systems conference, 17-20 December (2006), Bangkok, Thailand [5] Sadi A.Assaf and Sadiq Al-Hejji.,’Causes of delay in large construction projects’ in Saudi Arabia, International journal of Project Management, Vol24 (2006), p. 348-357.