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Influence of Nanodispersions on Properties and Microstructure Features of Cast and T6 Heat-treated Al Si Hypoeutectic Alloys El Mahallawi1,a, H.
The present study aims to develop nano-dispersed Al-Si alloys with suitable casting methods that assure the dispersion of the nano-particles.
El- Mahallawi, Y.Shash, K.
Ragaie, A.Y.Shash and M.A.El Saeed.
Beygi; “Microstructure and mechanical properties of Al–Al2O3 micro and nano composites fabricated by stir casting”, Mater.

AL-Ghamdi1,a and Mohammad Yeakub Ali2,b 1Colleges and Institutes Sector, Royal Commission for Jubail, Saudi Arabia 2Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, PO Box 10, 50728 Kuala Lumpur, Malaysia aur_goal123@hotmail.com, bmmyali@iium.edu.my Keywords: Nanocomposite, Multiwall carbon nanotube, High impact polystyrene, Water absorption Abstract.
(1) EI = EB - EL (2) If EL/EB ≤ 2.5 % => EL = 0 (3) (4) Where, Young's modulus, E; force applied to the object, F; original cross-sectional area through which the force is applied, A0; amount by which the length of the object changes, ΔL; original length of the object, L0; loss energy, EL; breaking energy, EB; impact energy for the test, EI; impact strength, I; cross sectional area, As.

Introduction In recent 10 years, some research have been performed on inclined CFST stub columns, such as Guo et al. [1], Han et al. [2] and Han et al. [3].
The longitudinal and transverse steel fibers are in compression and tension, respectively, and the longitudinal strains (el) and the transverse strains (et) are denoted as positive and negative, respectively.
Δ(mm) Nv(kN) ri1-1 ri1-2 ri2-1 ri2-2 ri3-1 rih1-1 ri3-2 rih1-2 rih2-1 rih2-2 Fig.4 Vertical load (Nv) versus vertical displacement (Δ) relationship Before the steel tube yields, el and et are generally uniformed along the specimen.
el et el et el et ri1-1 ri1-1 ri2-1 ri2-1 rih1-1 rih1-1 et el Nv(kN) ε(με) εy=-1982με εy=1982με Fig. 5 Typical vertical load (Nv) versus strain (ε) relationship Analyses Strength index.
References [1] Yanlin Guo, Luyu Liu, Yonghai Wang, et al.

Catalyst testing for Esterification of LA to EL.
(1) Where, EL concentrations, C (mg/L), product final volume, V (L), LA initial weight, W (g), EL molecular mass, MEL (144.17 g/mol), and LA molecular mass, MLA (116.11 g/mol).
The EL yield obtained over LC-400-1 was lower as compared to LCS-400-1.
Referring to Hassan et al. [8], the reduction of acidity led to a decrease in EL yield.
Al-Douri, and S.N.

Boutinaud et al. have reported that Pr-doped NaNbO3 (NaNbO3:Pr) shows photoluminescence (PL) properties similar to (Ca,Sr)TiO3:Pr [4].
Inset is a photograph of the ELD showing EL.
Red EL was observed on the whole surface of the top electrode.
EL started to be observed at about 18 V ac by naked eyes.
The EL starts to occur at a low electric field of about 0.1 MV cm−1 and the magnitude of the EL luminance is similar to each other [1-3].

The devices have a configuration of ITO/NPB (50nm)/ trans-DPDSB (d)/Alq3 (50-d nm)/LiF (0.5 nm)/Al, where d changed from 5 to 30 nm, and the corresponding Alq3 layer ranged from 45 to 20 nm to keep the total thickness of devices constant.
The normalized EL spectra of devices with varied thickness of trans-DPDSB are shown in Figure 2.
It can be seen that the EL spectra features are sensitive to the thickness of the trans-DPDSB layer.
Wavelength (nm) A B C 400 440 480 520 560 600 640 680 0.0 0.2 0.4 0.6 0.8 1.0 Wavelength (nm) PL (Normalized) Fig. 2 EL spectra of device A (straight line), B (dash line) and C (dot line).
WOLEDs have a configuration of ITO/NPB (50nm)/trans-DPDSB (10 nm)/rubrene/Alq3 (40 nm)/LiF (0.5 nm)/Al, with the rubrene thickness varying from 0.05 to 0.15 nm.

Date: 2014/5/15 19:37:14 Voltage: 20.0kV Pulse: 0.95kcps El AN Series unn.
Date: 2014/5/15 19:37:14 Voltage: 20.0kV Pulse: 0.95kcps El AN Series unn.
[4] Shuwen Chen, Qiping Chen,Kewen Gong and et al: Pait & Coating Industry,2003,1:56
[7] Ziyan Wei, Yuejin Liu, Guolong Zhang and et al: China Paint News.2008,23(6):47
[13] Weimiao XIE, Hui Chen, xuanhui Zhang and et al: Chinese Journal of Catalysis 34 (2013) 1076

In addition, with increasing the extrusion ratio, UTS and El% of the composite are increased [9].
Materials and Methods To prepare Al-15 wt. % Mg2Si (Al-5.5 wt. % Si-9.7 wt. % Mg) primary composite ingot, pure Al (99.8%), pure Si (99.5%) and pure Mg (99.9%) were used.
The variation of UTS and El% values with extrusion ratios are illustrated in Fig. 3.
Fig. 3: (a) UTS and (b) El% values of hot extruded and solution heat treated Al-15%Mg2Si-1.0%Gd composite at different extrusion ratios Fig. 4 (a) – (c) exhibits the fracture surface of extruded and heat treated Al-15%Mg2Si-1.0%Gd composite at different extrusion ratios.
Zhoub, Microstructural Development of Al-15wt.

Ching et al. measured fb=0.055 in urban dwellings in Kaohsiung, Taiwan [31].
Abd El-hady, M.
Al-Jarallah, F.
Al-Shukri, Indoor radon measurements in dwellings of four Saudi Arabian cities.
Al-Tamimi, Natural radioactivity due to radon in Soum region, Jordan.

For the EL technique, either a patterned aluminum (Al) film or a processed diode was employed [6].
The glide of the Si-core PDs are shown in Figs. 1b, c and d after 1, 2 and 10 minutes of biasing, respectively, at 10 A/cm2 (the dark grid lines correspond to the patterned thin Al film for electrical contact to the epitaxial layer).
One can see in Fig. 3 that both the EL and the PL technique gave similar spectral responses.
offcut EL a) b) c) d) e) 100µµµµm C-core 50µµµµm Si-core C-core 0 min 1 min 2 min 10 min 950±12.5nm half- loops Fig. 1 a) EL image of an array of half-loop defects about 15 µm below the surface obtained at 10 A/cm 2 and with a longpass filter at 590 nm.
The EL spectra are the same over the current range from 0.1 - 10 A/cm-2 and also agree with the PL spectra.