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Online since: March 2020
Authors: Mamdouh Eissa, Omnia Ali, Taha Mattar, Ahmed Hamed, Abdelhakim Kandil
El-Shahat, T.
El Faramawy, M.F.
El-Shahat, T.M.
El Faramawy, T.
El faramawy, T.
Online since: January 2013
Authors: Xiao Ya Hu, Tian Tian, Lu Wang, Yang Wang
The Al3+ solution (1.0×10-2 mol/L) was prepared by dissolving 0.3751 g Al(NO3)3 (Sinopharm Chemical Reagent Company, China) in deionised water.
El-Brashy, N.
El-Enany, M.
El-Din, N.
El-Enany, M.
Online since: January 2015
Authors: Ai Li Yusup, Qian Xu, Kai Yu Hu
The antenna is in azimuth zero position, Ab is the fore-plane of the alidade, Af is the back-plane, Al is the left-plane, and Ar is the right-plane.
Table 1 The RMS of the former model and revised model El 22° El 44° El 66° El 88° FORMER 4.4530 4.1994 4.0408 4.6479 REVISED 3.9848 3.4644 3.3512 4.0076 B.
Online since: May 2022
Authors: Muhammad Mufti Azis, Agus Prasetya, Adam Kusuma Rianto
Pacheco-Malagón et al. [5] proposed the removal mechanism as a depolymerization process.
All these species interact with Al–O, and AlOH groups in the catalyst support.
El-Shamy, H.A.
El Sayed, A.A.
Abd El Rahman, Hydrotreating of waste lube oil by rejuvenated spent hydrotreating catalyst, Egypt.
Online since: June 2015
Authors: M.R. Sahar, M.Y. Nurulhuda
Moreover, it is observed that the highest band intensity occured at 1.0 mol percent of Sm2O3 and in agreement with the work by Turky et al. [9].
El-Diasty, Optical properties of oxide glasses containing transition metals: Case of titanium and chromium containing glasses, Curr.
Al-Ani and A.A.
El-Adawy, A.A.
El-Rabaie, A.S.
Online since: October 2018
Authors: V. Konukhov, S. Mukhanov, G. Konukhova
The idea of the characteristics of heat transfer and liquid flow in various devices of tube bundles: round, ellipsoidal and pterygoid, for heat exchangers by constructing a two-dimensional numerical model was given by the Franco-Belgian team (Nagla El-Garbi, etc.) [2], and also in C Jayewel, Shaligram Tiwari [3], Sh.
Aiba et al. [4].
Numerical study of heat and flow characteristics in a single-phase heat exchanger with a parallel flow to obtain optimal shapes was conducted by South Korean researchers (Seok-Jin O et al.) [5].
[2] Najla El Gharbi, Abdelhamid Kheiri, Momammed El Ganaoui, Ryan Blanchard, Numerical optimization of heat exchangers with circular and non-circular shapes, In Case Studies in Thermal Engineering, 6 (2015) 194-203
Case, A.L.
Online since: January 2010
Authors: Yoichi Kayamori, Takehiro Inoue, T. Tagawa
Shen et al. [6] demonstrated that ASTM E1290-02 gave CTOD values about 30 % smaller than those calculated in BS7448 for the girth welds of API 5L Grade X80.
Donato et al. [7] also showed that CTOD converted from plastic work and its dimensionless J calibration factor was 20 to 30 % lower than the corresponding BS7448-CTOD in JIS SM400C steel.
In the working group, Tagawa et al. [8] indicated that ASTM E1290-08 gave a smaller value of the critical CTOD for cleavage cracking than that evaluated by BS7448 for low yield-to-tensile ratio steels, and we [9] developed an equation that transforms BS7448-CTOD into ASTM E1290-CTOD with reasonable accuracy.
CTOD in BS7448-1:1991 and ASTM E1290-08 BS7448-CTOD, δBS, is obtained by the following equation [2], where δBS,el is the elastic part of δBS, δBS,pl is the plastic part of δBS, K is the stress intensity factor, ν is Poisson's ratio, E is Young's modulus, σYS is the 0.2% offset yield strength, rpl is the plastic rotational factor, Vpl is the plastic part of clip gauge opening displacement, a is the crack length, b is the uncracked ligament width and z is the distance of the knife edge measurement point from the front face on Single Edge-notch Bend (SEB) specimens or from the load line in Compact Type (CT) specimens
( ) ( )                     + + + + − = + = += W2.0a8.0 z 1bB A E 1K m1 JJ m1 plpl 2 2 Y plel Y pl,ASTM el,ASTM ASTM α η ν σ σ δδδ (2) m and ηpl are the constraint factor and the plastic J calibration factor, respectively, and are given by the following equations
Online since: May 2005
Authors: Andrey O. Konstantinov, Anatoly M. Strel'chuk, Anders Hallén, Evgenia V. Kalinina
The p+-layer were formed by implantation of Al and thermal annealing; a p+n junction was formed at a depth of 0.6 µm [3].
Similar effects observed earlier for proton irradiated 6H-SiC pn structures with NdNa=4x1016 cm-3 [4] (the irradiation was carried out with 8 MeV protons with doses 1014-1016 cm-2). 1.6 2 2.4 2.8 3.2 Photon energy, eV 0 0.2 0.4 0.6 0.8 1 EL intensity, arb.un. 1 2 3 a 1.6 2 2.4 2.8 3.2 Photon energy, eV 1x10-3 1x10-2 1x10-1 1x100 EL intensity, arb.un. 1 2 3 b Fig.3.
Injection electroluminescence spectra of the pn structure at forward current 100mA before irradiation (curves 1), after gamma-ray irradiation (curves 2) and after first neutron irradiation dose (curves 3); room temperature; the scale for EL intensity is linear (a) or logarithmic (b).
[3] E.V.Kalinina et al: Semiconductors Vol. 37 (2003), p. 1229
[4] A.M.Strel'chuk et al: Mat.
Online since: August 2014
Authors: Xiang Dong Mao, Hua Gang Sun, Hui Qun Yuan
References [1] Badaoui M El, Cahouet V, Guillet F, et al.
[2] Badaoui M El, Antoni J, Guillet F, et al.
[3] Parey A, Badaoui M El, Guillet F, et al.
Online since: January 2014
Authors: Guang Ming Li, Ju Wen Huang, Hao Chen Zhu, Fei Li, Xiang Shi, Ying An
There were many kinds of metal elements in food residue including Al, Fe, Mg, Zn, Pb, Cr, Cd, etc.[17, 18] By pre-analysis we found that the amount of heavy metals such as Pb, Cr and Cd was very little, so we chose Al, Fe, Mg and Zn as parameters for food residue to determine the metal content.
The content of Al for each type of catering habits was under 4 mg/kg, except seafood restaurants.
Seafood restaurants got Al content of 9.62 mg/kg, much higher than the others.
El-Mashad, K.
El-Mashad, R.H.
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