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The observations were analyzed according to the indentation equation for stress intensity factor, K IC that was given by Chantikul et al. [10]: KIC = 0.016(E/H)1/2P/C3/2 (4) In this equation, E is the elastic modulus, H is the Vickers hardness, P is the indentation load, and C is the crack length from the center of the indentation.
Monaco, E.L.

Salwa Mowaf et al. had tested improving wool fabric by using bio- and chemical treatments [9].
Alireza Ghasemi et al.
Honglian Cong et al. had investigated nine groups of knitted woolen fabrics for sportswear treated by oxygen low-temperature plasma [11].
Hu et al. [8] and then knitted woolen loop tended to return to their first shape in cooling conditions.
[9] Salwa M., Rania El-N, Improving Some Aesthetic and Performance Characteristics of Wool via Synergistic Action of a Protease and a Cationic Silicon Softener.

SiAlONs can be formed by the replacement of Si-N with Al-O in Si3N4 structure.
Chartier et.al [25] has also proved the steric stabilization of polyphosphates.
Oliveria et al [23] found isoelectric point of AlN at around 12.
The same results for Y2O3 were found by Albona et al [27].
El fallah and J.M.

Al-Muhtaseb, M.
Al-Haj, M.
Al-Hinai, M.
Al-Albri, S.
El-Chaghaby, M.H.

Omran et al. [34] harnessed RSM to optimize corrosion inhibition using green inhibitors for mild steel in sulfuric acid.
Al-Otaibi, A.M.
Al-Mayouf, M.
Abd-El-Nabey, I.M.
El-Zayaday and M.

El-Sherik, U.
Effects of CeO2 addition on microstructure and high temperature oxidation resistance of Ti-Al coating.
Determination of the critical content of Al for selective oxidation of Ti3AlC2 at 1100℃.The European Ceramic Society, Vol.36, Issue 14, pp3311-3318 [16] Fencheng Liu, Yuqing Mao, Xin Lin, Baosheng Zhou, Tao Qian (2016).

Al-Mudhaf, T.H.
Akers, et al: Nuclear Fusion, Vol. 44(2004) No.8, p.917
Green, et al: Geothermics, Vol. 23(1994) No.2, p.73-109
Tenma, et al: (2000)
[21] E.L.

Besides Al and Ga, tin (Sn) doped ZnO has also showed improvement on polycrystalline structure, grain size, and optical band-gap [5].
Co-doping ZnO with elements such as Al-Ga [7–9], Al-Sn [10], Al-N [11], In-Ga [4], and Sn-Ga [12] have been attempted.
IGZO was first developed by Hosono et al. [13] and it is currently being utilized by display manufacturers such as Samsung and Sharp.
The decrease on transmittance % has also been reported by Mallick et al. on their Sn-F co-doped ZnO films specifically on higher Sn doping concentration [35].
El Hichou, M.

Li et al. [6] reported that Cd hyperaccumulation in Sedum alfredii Hance was prompted by appropriately increasing nitrogen level in growth solution.
Extraction of organic acids from plant materials was done according to the method reported by Shen et al. [15] and separation were conducted on reversed-phase HPLC according to the method of Wang et al. [16].
Al-faiyz, M.M.
El-Garawany, F.N.
Al-Eed.

Ghorbel2 1 Laboratoire TPMP, FGMGP, USTHB -BP 32 El Alia, Bab Ezzouar, Algiers, Algeria 2 Université de Cergy-Pontoise L2MGC, Neuville Sur Oise 95031, France a omar.rahli@u-cergy.fr, brachid.bennacer@u-cergy.fr, c khedbouh@yahoo.fr Keywords: PRB flow, porous media, mixed convection, heat and mass transfer, rectangular duct.
Moukhaled et al. [11] studied the influence of aiding and opposing buoyancy forces on forced convection heat transfer in vertical pipes.
Chou et al. [16] reported experimental and numerical work on the Brinkman-Forchheimer model with variable porosity.
Llagostera et al. [17] and Postelnicu [18] simulated mixed convection in cavity filled with a porous layer and heated from below.
Taher, et al.: Int.