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Chen, et al.
(In Chinese) [2] EI-Ashmawy A E, Mobarak F, El-Kaliobi S.

Jeffries-EL, J.
Al-Salman, M.J.

Colangelo et al. [3] concluded that polymer-modified mortars have improved compressive strength in comparison to unmodified ones and polymer helps restrain micro-crack propagation.
El Didamony, A.

[3] Hartwich F,Muller B,Fuhrer T,el al.Timing in the TTCAN network[A].Proceedings 8th International CAN Conference[C].

So it can be expressed by the change of PI concentration in the steady state: (2) Where, CPI and A represent the molar concentration and the absorbance of PI respectively; l and l’ represent the thickness of colorimetric ware and the exposure thickness respectively; e represents the molar extinction coefficient; El represents the energy of every mol photons with wavelength l.; Ia represents the absorbed light intensity, it can be calculated with the initial absorbance A0: (3) The Eq.3 involves the approximate error.
Wang, A.L.

After deoxidization with Al at 1600°C, the melt was poured with addition mischmetal (Cerium-rich mischmetal, containing La, Pr, Nd, Tm) into the ladle for modification before tapping.
El-Batahgy, B.

Table 1 Composition [wt%] and mechanical properties of X52 steel and AZ31B magnesium alloy C Mn Si S P Fe σs[MPa] σb[MPa] El X52 0.16 1.19 0.26 0.009 0.01 balance 418 550 33% Al Zn Mn Si Mg AZ31 3.20 0.45 0.26 0.15 balance 135 250 19.5% Results and discussion As shown in Fig. 1, the average of 10 waveforms and Fast Fourier Transform (FFT) Algorithm spectra from CF crack propagation for X52 steel and AZ31B magnesium alloy showed two distinctly different shapes.

The matrix was commercial pure aluminum with Al content larger than 99.6wt.%.
Abou El-khair, M.

Abd El-Rehim, E.
Al-Youbi, X.

El-Atawy, E.
Al-Shaer, in: QoS policy verification for DiffServ networks Quality of Service (IWQoS), 2011 IEEE 19th International Workshop.