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Results of CDB investigations (a) ratio curves (related to the well annealed Al) for the glass samples studied; (b) ratio curves (related to the well annealed Al) for the glass samples studied compared with the curves for reference samples of Fe, Mn, Si and Al2O3; and (c) ratio curves (related to base glass 16Na2O/10MnO/74SiO2) for the glass samples studied.
Ratio curves related to well annealed pure Al (99.999%) reference are plotted in Fig. 2a and are very similar for all samples studied.
Since all ratio curves in Figs. 2a and 2b are related to pure Al, the shape of the ratio curve for the Al2O3 sample corresponds to positrons annihilated exclusively by oxygen electrons.
El Shabrawy, C.
El Shabrawy, C.

Arda et al. investigated the torsional behavior of elastic CNTs in several case studies [10, 11] with using nonlocal elasticity theory.
Fatahi et al. [12] used the doublet mechanics model in torsional analysis of CNTs and nonlinear coupled axial-torsional vibration of CNTs with homotopy perturbation method [13].
El-Borgi et al. [26] used the strain and velocity gradient model for the torsional analysis of viscoelastic CNT.
http://doi.org/10.1039/D0NR00139B [3] A.L. 
El-Borgi, P. 

If brazing bimetallic Cu-Al material is used like a similar process to brazing a single type of material, which can to be realized but are still needed some extra precautions.
NOCOLOK flux is produced in the liquid phase using Al(OH)3, HF and KOH like raw materials.
Huang: Brazing of 6061 aluminum alloy/Ti–6Al–4V using Al–Si–Cu–Ge filler metals, Journal of Materials Processing Technology, Volume 212, Issue 1, (2012) 8-14
Shui-Qing: Torch brazing 3003 aluminum alloy with Zn—Al filler metal, Transactions of Nonferrous Metals Society of China, Volume 22, Issue 1, (2012) 30-35
El-Magd, Behaviour of Cu-Zn alloys in high speed shear tests and in chip formation processes, Materials Science and Engineering: A, Volume 395, Issues 1–2, (2005) 129-140

Jiang Jinlong etc.[19] used powder metallurgic method to prepare CNTs/Al matrix composite, and studied the influence of different CNTs content to the hardness and steady frictional wearing behaviour.
[3] El Eskandarany M S, Sherif M, Journal of Alloys and Compounds. 2(1998) 263-271
[12] El-Eskandarany M S, Sherif M, Journal of Alloys and Compounds. 2(1998) 263-271 (in Chinese)

Introduction Transition-metal-based phosphorescent materials are of great interest because of their potential application in efficient electroluminescence (EL) devices[1-3] on account of these materials’ potentiality of achieving an internal quantum efficiency of 100% with the application of triplet irradiative emission.
Because of the advantages of these materials, most transition-metal-based complexs have been reported, but quite a few Os(II) [4,5],Ir(III) [6,7] and Pt(II) [8] complexes have been reported to be very effective materials in EL devices.
[14] K Z Okada, Y F Wang, T M Chem et al.

., Effects of Working Parameters on Surface Finish in Ball-burnishing of Hardened Steels, Precis Eng 29 (2005) 253 [5] El-Axir, M.H., Othman, O.M., Abodiena, A.M., Improvements in Out-of-roundness and Microhardness of Inner Surfaces by Internal Ball Burnishing Process, J Mat Proc.
Melville: American Institute of Physics, pp.300-303 (ISBN: 978-0-7354-1085-5) [7] Luo, H, Liu, J., Wang, L., Zhong, Q., Investigation of the Burnishing Force during the Burnishing Process with a Cylindrical Surfaced Tool, P I Mech Eng B J Eng Manuf 220 (2006) 893 [8] Kundrak, J., Mamalis, A.G., Gyani, K., et al., Surface Layer Microhardness Changes with High-speed Turning of Hardened Steels, I.
[14] Ebeid S.J., El-Taweel T.A., Surface Improvement through Hybridization of Electrochemical Turning and Roller Burnishing based on the Taguchi Technique.

Lee, et al, J.
El-Sayed, M.A.
El-Sayed.

Development of the modified cellular automata sphere growth model for creation of the digital material representations MADEJ Lukasz 1,a *, PASTERNAK Kamil 1,b, SZYNDLER Joanna 1,c, and WAJDA Wojciech 2,d 1 Department of Modelling and Information Technology, AGH University of Science and Technology, Al.
El-Dasher, K-Y.
El-Dasher, A.

The large active area SBDs had an as-deposited Al contact as the ohmic contact.
We observed electro luminescence (EL) from the back of the Schottky contacts to identify the catastrophic defects.
In EL measurements, we confirmed that destructive breakdown occurred at the edge of the Schottky contact for most of the (000-1) SBDs, Fig. 3 Reverse current-voltage characteristics of 0.25 cm 2 (a) (0001) and (b) (000-1) SBDs.

Seismic Response Analysis Results For the EL- Centro seismic wave with the same amplitude input in model 1 and model 2, the mechanical properties of the model under earthquake action are calculated by time history analysis method.
Fig. 4 EL-Centro oscillogram Model 1 analysis results.
Hatayama K. et al.