Search results

Bertail et al. presented selective synthesis of a- and b-Zn2SiO4:Mn [6].
El Mir, K.
AL-Hobaib, H.
El Mir, K.
El Ghoul, Superlattice and Microstructures, 85, 180-184 (2015) [9] D.

Xiao-Qiong Wu et al. have synthesized chitosan-Au hydrogel system via photoreduction and used it as reduction of nitrophenol derivatives by NaBH4 [17].
This result is in agreement with the previous work by Kadir Karakas et al and Xiao-Qiong Wu et al. [18,19].
El-Sayed, W.
El-Sayed, Gold nanoparticles: Optical properties and implementations in cancer diagnosis and photothermal therapy, J.
Al-Marhaby, R.

Effect of Natural and Artificial Aging on the Mechanical Properties of Two Al-Mg-Si Alloys DJEMMAL Karim 1 *, FARH Hichem 1, 2, GUEMINI Rebai 1, ZIDANI Mosbah3 and SERRADJ Fares4 1 Active Devices and Materials Laboratory, Oum el Bouaghi University, Algeria 2 Department of Material Sciences, Faculty of Exact Sciences, University of Tebassa, Algeria 3 Laboratoire de Génie Energétique et Matériaux (LGEM), Université de Biskra, B.P: 145 Biskra, 07000 Algérie. 4Department of Material Sciences, Faculty of Exact Sciences, University of Guelma, Algeria Keywords: Al-Mg-Si alloy, artificial and natural aging, mechanical properties, Cu, excess Si Abstract.
The aging parameters on precipitation sequence of two Al-Mg-Si alloys with and without excess Si were studied by DSC, MET and Vickers hardness measurement.
Aging parameters and composition variations affect considerably the formability of Al–Mg–Si alloys [5, 6].
The Al-Mg-Si alloys were provided by the Banbury Laboratories of Alcan International Ltd as extruded sheets with sections 40 mm wide and 3 mm thickness.
[2] Hirsch J, Al-Samman T.

It is seen that the additive Al benefits the synthesis of single phase Ti3SiC2.
El-Raghy: J.
Li, et al.: Trans.
Polushina, et al.: Phys.
Zhu, et al.: Trans.

Goldstein, et al.
Wangk, et al.
Yang, et al.
Guo, et al.
Guo, et al.

,June, 1991 [4] Harrell, C et al (2018).
Sci. 2018, Vol. 15. doi: 10.7150/ijms.22644 [5] Girard-Perier, N et al (2020).
Radiation Physics and Chemistry 168. 108577 [6] Bikas, H. et. al., 2015.
Radiation Physics and Chemistry 141: 131–137 [11] Nguyen, JF et al (2019).
Polymer Testing 80: 106113 [12] El-Zahhar, A et al (2005).

Vaz Jr., E.L.
Vaz Jr., E.L.
Vaz Jr., E.L.
Vaz Jr., E.L.
Vaz Jr., P.S.B Zdanski, E.L.

Awad Al-rashdi, Umm Al-Qura University – Saudi Arabia • Prof.
Sahib, Iraq -Nahrain university-Al • Assoc Prof.
Ayman El Sharkawey, Kuwait University – Kuwait • Dr.
Jabbar abbas Jaber, Al-Furat Al-Awsat Technical University – Iraq • Dr.
Breesem, Al-Furat Al-Awsat Technical University – Iraq • Dr.

An Improved Harmony Search Algorithm for a Planar Parallel Robot Synthesis Badreddine ABOULISSANEa*, Dikra EL HAIEKb and Larbi EL BAKKALIc Team Modeling and Simulation of Mechanical Systems, Abdelmalek Essaadi University, Faculty of Sciences, Tetouan, Morocco ab.aboulissane@gmail.com, bdikra.elhaiek@gmail.com, celbakkali.larbi@gmail.com Keywords: Trajectory synthesis; Parallel mechanism; Heuristic algorithms; Mechanism synthesis Abstract.
Acharyya et al. [9] presented a comparative study to find out performances of three evolutionary algorithms: (GA), Particle Swarm Optimization (PSO) and (DE) with a new improvement technique applied on mechanism design.
A combined Genetic Algorithm–Fuzzy Logic method (GA–FL) in mechanisms synthesis have been proposed by Laribi et al. [10].
Fig. 2: The Processing Flow of the Improved Harmony Search Algorithm Case Study Case 1: 6 target points, 15 design variables The first case is a problem of generating six target points arranged in a vertical line, from Ettefagh et al. [8].

Table3 the mechanical properties of Specimens for tensile test Specimen NO Finish temperature 0C YS MPa UTS MPa EL % 592 702 20.6 588 698 20.1 601 705 19.1 Specimen 1 780 589 704 20.2 665 730 17.2 667 745 18.1 666 753 17.1 Specimen 2 730 654 734 16.1 657 743 19.2 642 744 17.6 636 738 18.3 Specimen 3 680 644 741 17.5 The YS and UTS is markedly higher than the normal process that the finished rolling temperature is about 900 ° C and the YS is about 490 MPa [11], The influence of finishing rolling temperature at 780°C, 730°C and 680°C on the YS and UTS of the steel are shown in table3.
The EL varied slightly with finished rolling temperature between 730°C and 680°C.
[6] Kimura T ， et al. ' 97 ， Proceedings of an International Conference.July 7-11 1997 ， Wollongong，Australia，Published by TMS 1997：645-651