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In this work, silica based xerogels and aerogels were obtained via sol-gel technology with MTMS and MTES precursors, following the experimental procedures described by Rao, Bhagat et al. [2,4] and used in an earlier work [9].
The experimental procedure follows the description of Rao, Baghat et al. [2,4] and uses the instrumentation already presented in an earlier work [9].
Al.Oweini and H.
El-Rassy: J.

The addition of aluminium (Al) leads to the formation of thermally stable precipitations of g’-phase (Ni3Al) in the matrix material (g-phase).
In addition, aluminium (Al), chromium (Cr) and molybdenum (Mo) as alloying elements lead to excellent corrosion and oxidation resistance.
Due to its excellent corrosion resistance, the class of Ni-Cr-Mo alloys like Alloy 625 (chemical composition in wt% Ni: bal, Cr: 20 – 23%; Fe: <5%; Si: <0,5%; Mn <0.5%; Mo 8 – 10%; Ti <0.4%; Co <1%; Nb + Ta: 3.15 – 4.15%; Al <0.4%) is therefore not only applied in stationary gas turbines as sealing material or for exhaust systems, but is also used in low-temperature applications in the oil or gas industry wherever the corrosion resistance of steels in liquid media is not sufficient anymore [3].
El-Baradie, J.

The objective of this study is to assess the suitability of the above method for the evaluation of the hot-rolled, anisotropic Al–Mn–Mg alloy.
The measurement results were then used to calculate the anisotropy indices using Equation (5): (5) where eb is the compression strain across the flat sample width; el is the tensile strain along the sample length; b0 and bk are the initial and final sample widths; l0 and lk are the initial and final sample lengths.
In general, however, the simulation and experimental data lead to the conclusion that Equation (1) can be applied to calculate anisotropy parameters for Al–Mn–Mg hot-rolled work pieces.
Liu, Comparison of texture evolution between different thickness layers in cold rolled Al-Mg alloy.

Lee et al. showed that the use of different voltages can alter the morphology of beads [27].
Yun et al. prepared and evaluated the filtration performance of three types of polymer nanofiber mats with different morphologies, ie, nanofibers, beaded-nanofibers, and composite particles/nanofibers [19].
[6] A.L.
Qin, E.L.

[3] Li Zhiqiang, Wang Liangju, Gong Wenhong, et al.
[6] Pietro Rocculi, Emiliano Cocci, Santina Romani, et al.
[11] Najib El Assi, Amer Jabarin.
[14] Zhang Xifen, Wang Xiumei, et al.

[5] Moro JK, Werier J, MacDermid JC, et al., Arthroplasty with a metal radial head for unreconstructible fractures of the radial head, J Bone Joint Surg Am. 83 (2001), 1201–1211
[7] Smets S, Govaers K, Jansen N, et al., The floating radial head prosthesis for comminuted radial head fractures: a multicentric study, Acta Orthop Belg. 66 (2000), 353–358
[12] Dawson J, Doll H, Boller I, Fitzpatrick R, Little C, Rees J, et al., The development and validation of a patient-reported questionnaire to assess outcomes of elbow surgery, J Bone Joint Surg Br 90 (2008), 466-473
[14] The B, Reininga IH, El Moumni M, Eygendaal D, Elbow-specific clinical rating systems: extent of established validity, reliability, and responsiveness, J Shoulder Elbow Surg 22 (2013), 1380-1394

Yang et al. studied the annealing practice and the embrittlement mechanism in the heat treating[1,5-6].
Angliu et al. reported the long-term aging embrittlement of the steel below 500℃[3].
The tribocorrosion damage were studied by Wang et al.[2].
Angeliu, E.L.

The dynamic fixation systems, so-called Dynesys, has been employed first by Stoll et al. but then formally introduced by Dubois et al. [31-36].
[12] Nevitt MC, Ettinger B, Black DM, Stone K, Jamal SA, Ensrud K, et al.
[20] Turner JA, Ersek M, Herron L, Haselkorn J, Kent D, Ciol MA, et al.
[27] Lehmann TR, Spratt KF, Tozzi JE, Weinstein JN, Reinarz SJ, el-Khoury GY, et al.
[54] Lee KK, Teo EC, Fuss FK,VanneuvilleV, Qiu TX, NgHW, et al.

ALIM and TADEUSZ BAKa Solar Energy Technologies, Western Sydney University, Penrith, NSW 2571, Australia aT.Bak@westernsydney.edu.au Keywords: Oxide semiconductor; Segregation; Defect engineering Abstract.
Al-Shahry, W.
[41] MG Walter, EL Warren, JR McKone, SW Boettcher, Q.
Alim, T.

Davim et al. [3] and Davim and Reis [4] reported that Ra increases with the feed rate and decreases with the cutting speed, i.e. to achieve a better surface finish it is necessary to employ a combination of high cutting speed with a low feed rate for machining with PCD and carbide tools.
Petropoulos et al. [9] and Mata et al. [11] also found that feed rate exerts the strongest influence on surface roughness, whilst cutting speed has a secondary effect during turning of PEEK-CF30 material using PCD and carbide tools.
Petropoulos et al. [9] also observed that the Ra and Rq parameters are more influenced by feed rate.
El-Sonbaty, U.A.
El-Hawary A survey of particle swarm optimization applications in power system operations, Electric Power Components and Systems, 34 (2006) 1349-1357