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Electroluminescence studies showed an orange (677 nm) corresponding to Cr-Al and, red (698 nm) and white (380-900 nm) for Se-Al and pure white for Cr-Se-Al.
The electroluminescence (EL) spectrum in Fig. 2 shows the DAP transition between the N-Cr impurity states corresponding to the acceptor energy level reported by Achtziger et al. [4].
Electroluminescence (EL).
Electroluminescence spectra for Cr-Al doped, Se-Al doped and Cr-Se-Al doped 4H-SiC.
Pieter Kik, and Forrest Ruhge, (Nanophotonics Device group at CREOL), for valuable suggestions and assistance with EL measurements.

El Moussaouy1,3,g, C.A.
El Hadi, A.
[9] A.L.
El Hadi, M.
El-Miad.

In terms of a Cu-Al phase diagram in 1150°C, Al can be melted completely into the liquid Cu and form a Cu-Al alloy.
El-Raghy: Scripta Mater.
El-Raghy and M.W.
Zhou, et al.: Mater.
Barsoum, et al.: J.

ELMiiaa plant, El-Minia Governorate and limestone provided from Samalot formation limestone area, El-Minia Governorate.
[2] El-Roudi, A.
[8] Kong, Deyu, et al.
A., et al.
[25] Meng, Tao, et al.

Abd El-latif, A.
Al-Hazmi, Y.
El-Sayed, H.A.
El-Remaily, H.
Abd El-latif, A.

Under the action of the EL Centro wave, Lanzhou wave and artificial wave, the maximum interlayer shear of structure with and without energy dissipation device as shown in Fig 3.
Fig.3 Envelope diagrams of story shear under small earthquake In the earthquake wave， with viscous dampers structure compared to the ordinary structure, The structure of the interlayer shear are reduced, Under the action of EL Centro waves in the X direction and Y direction.
In the rare earthquake of EL Centro wave, Lanzhou wave and artificial wave, the maximum story drifts of energy dissipation structure with viscous dampers are as shown in table 1.
Tab.2 Maximum acceleration, contrast under EL Centro ground motion(m/s2) Seismic Condition Frequent Earthquake Rare Earthquake X Direction Y Direction X Direction Y Direction General Structure 0.98 0.92 7.2 6.7 Damping Structure 0.69 0.53 6.2 5.7 Damping Rate 29.6% 42.4% 13.9% 14.9% Fig.4 Acceleration time-history at top floor of structure under small EL Centro ground motion Fig.5 Acceleration time-history at top floor of structure under rare EL Centro ground motion As shown in Figure 4 and figure5,the acceleration of energy dissipation structure has been siginificantly reduced.
[3] Kim Y J，Kim M H，Jung I Y，et al．Experimental investigation of the cyclic behavior of nodes in diagrid structures[J].Engineering Structures，2011，33 ( 7 ) :2134-2144

Pure white- and red-light electroluminescence from a single polymer has been obtained in a device with a configuration of ITO/PEDOT:PSS/polymer/Ca/Al.
Although high electroluminescence (EL) efficiencies have been achieved, this strategy suffers from intrinsic phase separation and bias-dependent EL spectra.
Electroluminescent properties The EL performance of the copolymers was examined in the device configuration of ITO/PEDT/polymer/Ca/Al.
The typical EL spectra of copolymer PFO-BTT from such device are shown in Fig. 3.
Table 3 Device performance of the copolymers with the device structures: ITO/PEDT/ polymer/Ba /Al Copolymers Device performance Chromaticity coordinates λPlmax /nm QPL /% λElmax /nm V mA cd m-2 cd/A Qext/% x y PFO-BTT0.01 421 73.3 424 5.6 4.2 81.4 0.29 0.50 0.34 0.34 PFO-BTT0.05 588 55.0 572 6.4 4.7 374 1.19 1.76 0.49 0.46 PFO-BTT5 597 72.2 598 15.5 4.9 663 2.03 2.2 0.61 0.39 PFO-BTT15 604 55.2 600 10.5 5.4 793 2.20 2.4 0.59 0.41 Fig. 3 EL spectra of copolymer PFO-BTT with ITO/PEDT/polymer/Ca/Al structure Copolymer PFO-BTT of all compositions emits red light.

Table 1 Compositions of the specimens in mass % Specimen Mg Si Fe Cu Al Al-6Mg Al-8Mg 6.00 8.10 0.002 0.004 0.19 0.004 0.02 0.002 Bal.
YS : yield strength, UTS : ultimate tensile strength, El : elongation, GS : grain size.
Specimen YS/MPa UTS/MPa El (%) GS/μm Al-6Mg 103 275 40 142 Al-8Mg 133 321 51 160 2.3 Experimental procedure Figure 2 is a schematic drawing of the apparatus for detecting the hydrogen emitted from the inside of the materials under the stress-corrosion environment.
(a)Al-6Mg, (b)Al-8Mg.
(a)Al-6Mg, (b)Al-8Mg.

Method for Regenerating Spent Catalyst Used to Produce Sulfuric Acid in the SO2 to SO3 Conversion Step Noureddine EL HASBAOUI1,a*, Abdelouahab.
ELHADRAMI2,b and Rachid BRAHMI3,c 1Coordination and Analytical Chemistry Laboratory (LCCA), Department of Chemistry, Faculty of Sciences, Chouaïb Doukkali University, El Jadida, Morocco. 2Coordination and Analytical Chemistry Laboratory (LCCA), Department of Chemistry, Faculty of Sciences, Chouaïb Doukkali University, El Jadida, Morocco. 3Coordination and Analytical Chemistry Laboratory (LCCA), Department of Chemistry, Faculty of Sciences, Chouaïb Doukkali University, El Jadida, Morocco.
Purification of sulphate leach liquor of spent raneynickel catalyst containing Al and Ni by solvent extraction with organophosphorus-based extractants.
[7] H.REGUIG Synthèse et caractérisation des catalyseurs à base de vanadium : VO2-MxOy (M = Ti, Si, Al, Zr, Ce).pplication à l’oxydation du cyclohexène. 2013
[11] Murgia, V.; Torres, E.M.F.; Gottifredi, J.C.; Sham, E.L.

El-Shater 1,f and F.
El-Shater, T.
El-Sayed, M.A.
El Shershaby, Rad.
Al-Lohedan.