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Gupta el al. [3] investigated the bahaviour of pure aluminum plates varying from 0.5 to 2 mm impacted by ogive-nose steel projectiles.
Forrestal et al. [5] conducted experiments with 0.026 kg mass, 8.31 mm diameter conical-nose tungsten projectiles and 12.7, 50.8 and 76.2 mm thick aluminum plates of AA5083-H131.
Børvik et al. [6, 7] performed perforation experiments and calculations with 15-30 mm thick AA5083-H116 aluminum plates and 20 mm diameter, 98 mm long, HRC 53 conical-nose hardened steel projectiles.
Swaddiwudhipong el al. [8] studied the perforation of Weldox 460E steel and AA5083-H116 aluminum plates with varying thicknesses and various projectile nose geometries including bunt, conical and ogival noses, adopting the coupled smooth particle hydrodynamics - finite element method.
In order to examine numerical procedures, the geometry configuration of the projectile-target plate system was taken to be identical to the one designed by Børvik et al. [6].

El-Sherik et al. reported increasing sulfur contents in the deposit with increasing saccharin addition [9].
Yamaguchi et al. have shown that sulfur induced embrittlement of nickel [10].
The present result is compared with those of Ebrahimi et al. [11], Torre et al. [12], Gu et al. [13,14], Shen et al
[15] and Prasad et al. [16], who used electrodeposition to produce nickel specimens.
El-Sherik, U.

Kinetics of Ion-Pair Effect of Aquation of Bromopentaammine Cobalt(III) Complex in Different Dicarboxylate Media Farah Zeitouni1,a, Gehan El-Subruiti1,b, Ghassan Younes1,c, and Mohammad Amira2,d (*) 1Chemistry Department, Faculty of Science, Beirut Arab University, P.O.
The bromopentaammine cobalt(III) perchlorate complex was prepared by using the method of Hynes et al [8].
malate tartarate succinate malonate DH*ip (kJ mole-1) 69.01 100.60 113.55 114.42 DS*ip (J K-1 mole-1) -105.56 -7.30 22.67 35.62 DG*ip (kJ mole-1) 102.05 102.89 106.84 103.27 References [1] E.L.

Preparation of Hollow Polystyrene Nanocapsules via a Miniemulsion Polymerization Process Yangsoo Kim 1,a , David Sudol2,b, Victoria Dimonie2,c, and Mohammed El-Aasser2,d 1 Department of Pharmaceutical Engineering, Inje University, Gimhae 621-749, Korea 2 Emulsion Polymers Institute, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, U.S.A a cheykim@inje.ac.kr, b eds2@lehigh.edu, c vld0@lehigh.edu, d mse0@lehigh.edu Keywords: hollow polystyrene nanocapsules, miniemulsion polymerization process, TEM analysis, kinetic study Abstract.
The miniemulsion polymerization process in this study was adopted from the report by Anderson et al. [3], who found that polystyrene (PS) particles as small as 50 nm could be produced through the combined use of microfluidization, low reaction temperature (50 oC), and redox type initiator.
El-Aasser: Macromolecules, Vol. 35 (2002), p. 574.

Wang et. al.
Guo et. al.
Multiple 0.3 – 3 _ _ _ Increase _ 2012 E.L.
Single 2 – 8 _ _ Decrease 17.5% _ _ 2012 E.L.
Lee et. al.

Introduction It is well known that Al-Mg based alloys have a good corrosion resistance.
However, Kim et al [1] reported that the improved corrosion resistance arose from the lower dissolution rate of grains with (001) plane parallel to the surface.
The annealed sheets of two kinds of Al-Mg-Mn (A5054 and A5083) alloys including different amount of magnesium were received.
Sample Si Fe Cu Mn Mg Cr Zn Ti Al A5454 0.06 0.16 0.04 0.56 2.79 0.07 0.01 0.01 Bal.
El Dasher and C.A.

Riccardo Polini et al. [6] studied dry turning of MMCS with CVD diamond tools.
COF.LHOt et al. [7] showed that PCD tool is the only realistic option when machining MMCs.
El-Gallab and M.
Caroline J.E. et al. [9] reported that PCD tools' wear mechanism is abrasion and adhering.
El-Gallab, M.

Dislocation Recovery in Casting Alloy by Positron Lifetime Technique M.A.Abdel-Rahman, M.S.Abdallah, N.A.Kamel and Emad A.Badawia Faculty of Science, Physics Department, El-Minia University, POB 61519, Egypt a emadbadawi@yahoo.com Keywords: Activation Energy, AlSiMg Casting Alloy, Defects, Isochronal Annealing, Isothermal Annealing, Positron Annihilation Abstract Recovery behavior of 20% plastically deformation of casting AlSi11.35Mg0.23 in various stages of isochronal annealing has been investigated by positron Lifetime (LT).
The advantage of PAT is its ability to distinguish different types of defects [1] such as vacancies, vacancy clusters, dislocations, grain boundaries, voids, etc. the effect of plastic deformation on positron annihilation technique was first reported by Dekhtyar et al, [2] Berko et al, [3] Hautojarvi [4] and Cotterill et al [5].
Thesis, El Minia University (1995)
Lemahien et al.: Positron Annihilation Edited by P.C Jain, R.

Experimental Setup for Fatigue Testing of Additively Manufactured Specimens Emanuele Manco1,a*, Fabio Scherillo1,b, Andrea El Hassanin1,c, Domenico Borrelli2,d, Antonio Caraviello2,e, Antonino Squillace1,f 1Dept.
References [1] Scherillo F, Manco E, Hassanin A El, et al (2020) Chemical surface finishing of electron beam melted Ti6Al4V using HF-HNO3 solutions.
Fatigue Fract Eng Mater Struct 42:991–1009. https://doi.org/10.1111/ffe.13000 [4] Suo H, Chen Z, Liu J, et al (2014) Microstructure and Mechanical Properties of Ti-6Al-4V by Electron Beam Rapid Manufacturing.
Mater Sci Eng A 598:327–337. https://doi.org/10.1016/j.msea.2014.01.041 [6] Ali S, Hamza Tahir M, Asad Saeed M, et al (2019) Design and Development of Fatigue Machine: Rotating Bending Fatigue Testing on different Materials.
Int J Press Vessel Pip 78:19–30. https://doi.org/10.1016/S0308-0161(00)00080-6 [8] Chern AH, Nandwana P, Yuan T, et al (2019) A review on the fatigue behavior of Ti-6Al-4V fabricated by electron beam melting additive manufacturing.

Materials 20 °C 250 °C σ0.2 [MPa] σb [MPa] EL [%] σ0.2 [MPa] σb [MPa] EL [%] WE54a 200 300 10 125 190 50 GWZ540 260 350 12 220 300 20 adata from Ref. [10].
Yang et al., Mat.
Guo et al., J.
Li et al., Scripta Mater. 56 (2007) 137-140
Champness, et al., Analytical Electron Microscopy, 1984, pp. 153