Search results

Mg-based alloys are one of the most promising alloys to be used as rechargeable hydrogen storage materials due to resource richness, larger hydrogen storage capacities and low cost et al[1-4].
Kohno et al. studied the electrochemical properties of mechanically ground Mg-Ni alloys and found that the mechanically ground alloy powders formed an amorphous-like matrix with dispersed nano-size Ni or Pd particles.
According to Mg-Al phase, Mg2Al3 phase may be formed between Mg and Al when the atomic ratio of Mg and Al ranges from 8.5 and 40.3％.
Experimental Mg and Al powders were mixed in a vial made of 1Cr18Ni9Ti stainless steel according to the atomic ratio of 40% and 60% and then milled in QR-1SP planetary ball milling machine made in Nanjing University.
El-Amoush: Journal of Alloys and Compounds Vol. 441(2007), p. 278 [3] Z.

Flow in a Three-Sided Lid-Driven Cavity: Genesis of Vortices under Asymmetric Parallel Upward Motion Azzouz El Amin1,2,a*, Houat Samir1,b 1MSMPT Group, MNEPM Laboratory, University of Abdelhamid Ibn Badis of Mostaganem, Mostaganem, Algeria 2University of Science and Technology of Oran, 1505 El M’nouar, 31000-Oran, Algeria aelaminazouz@univ-usto.dz, bsamir.houat@univ-mosta.dz Keywords: lid-driven cavity, three-sided, finite volume method, incompressible flow, vortices genesis.
Lin et al. [29], and Azzouz and Houat [38].
The vorticity values reported from Kamel et al. [39] are reproduced as originally presented in their work, which follows a different sign convention.
The results by Kamel et al. [39] are given by a filled square.
[15] E.L.

Abd El-Aaty1,a*, Osama Tobail2,b, Madiha A.
Whereas, Jong-Bae Park et al [26] used plasma electron annealing process for achieving the recrystallization of a-Si thin films.
AGBO et al, Deposition Pressure and Hydrogen Dilution Effects on the Spectral Response of Thin Film Nanocrysyalline Silicon Solar Cells, Journal of Ovonic Research 9(1) (2013) pp2-4
Ganguly et al, Defect formation during growth of hydrogenated amorphous silicon, Appl Phys 47 (1993) pp3661
Nasuno et al, Passivation of oxygen–related donors in microcrystalline silicon by low temperature deposition, Appl Phys 78(16) (2001) pp2330–2332

Lee et al. [5] extensively studied the various toggle systems including the Gluck and Ribakov scheme taking into account the inherent nonlinearities coming from large interstory displacements.
Configurations f El Centro [mm] Kobe [mm] Newhall [mm] Santa Monica [mm] Uncontrolled - 11.717 8.185 15.656 6.961 Chevron brace 1.00 10.961 7.646 14.514 6.210 Scissor-jack toggle 2.16 8.941 6.144 11.738 5.350 Lower toggle 2.662 7.987 5.626 10.491 4.963 Upper toggle 3.191 7.010 5.173 9.252 4.529 Proposed 5.00 4.712 3.877 6.423 3.047 Table 3.
The earthquake excitations used consisted of the El Centro, component S00E; the Kobe, component EW; the Newhall, at LA County Fire Station, component 90°, the Santa Monica at City Hall, component 0°.
Configurations f El Centro [mm] Kobe [mm] Newhall [mm] Santa Monica [mm] Uncontrolled - 11.717 8.185 15.656 6.961 Chevron brace 1.00 10.959 7.600 14.855 6.110 Scissor-jack toggle 2.16 9.849 6.616 13.643 5.604 Lower toggle 2.662 9.401 6.172 13.106 5.411 Upper toggle 3.191 8.964 5.803 12.518 5.207 Proposed 5.00 7.523 4.961 10.639 4.399 Table 4.
Displacements time histories under the selected earthquakes: uncontrolled system (black line), upper toggle brace (red line); proposed configuration (solid blue line); linear damper ( , 5.44 Ns mm D linC = , α=1.00). 0 1 2 3 4 5 6 7 8 Time [s] -15 -10 -5 0 5 10 15 U [mm] El Centro 6 7 8 9 10 11 12 13 14 15 16 Time [s] -10 -5 0 5 10 U [mm] Kobe 3 4 5 6 7 8 9 10 11 12 Time [s] -20 -10 0 10 20 U [mm] Newhall 4 5 6 7 8 9 10 11 12 13 14 15 Time [s] -10 -5 0 5 10 U [mm] Santa Monica Fig. 5.

Following the earthquake that struck Tarapacá in Northern Chile on the 13th June 2005 registering a seismic moment of 7.9 [3], a national committee “el Comité “Adobe”” was formed to review the safety of building with earth construction.
Consisting of representatives from the Ministry of Housing, the national professional association of architects El Colegio de Arquitectos, the national construction institute El Instituto de la Construcción and various universities, the committee concluded that under no circumstance should buildings be built or rebuilt using load bearing earth construction and that earth construction should only be used when forming a non load bearing infill within a structure that can be shown to comply with the Chilean standard for the seismic design of buildings NCh 433 Of.96 Diseño sísmico de edificios [5].
As part of the research project “Restauración y reconstrucción de viviendas de adobe en el valle de Colchagua; Un desafío técnico y patrimonial,” dry bulb temperatures, relative humidity and internal radiant surface temperatures were measured on the 25th April 2012 in two surviving adobe dwellings, Casa Enrejada (fig. 4) and Casa Pampa de Lima (fig. 5).
Acknowledgments The author acknowledges the funding by the Universidad Central de Chile of the research project “Restauración y reconstrucción de viviendas de adobe en el valle de Colchagua.
Carta al Director, La Tercera Edición digital. 21/04/2010 - 04:00.

El-Korashy, H.
El- Zahed, H.
Al-Hazmi, Optical changes induced by laser-irradiation on thin films of Se75S15Ag10 chalcogenide, J.
El-Metwally, M.

In the time-displacement analysis, Taft Wave that represents site Ⅱand El-Centro Wave that represents site Ⅲ are adopted to analyze the seismic response of the structures.
(h) (i) 1 2 3 1 2 3 1 2 3 1 3 2 2 3 1 1 3 3 2 1 3 2 1 2 2 1 3 Displacement (mm) Story Moment (kN﹒m) Story Shear (kN) Story Shear (kN) Story Moment (kN﹒m) Story Displacement (mm) Story Displacement (mm) Story Moment (kN﹒m) Story Shear (kN) Story Fig.5 Contrast of numerical analysis (a) Maximum displacement curve of frame structure (b) Maximum moment curve of frame structure (c) Maximum shear curve of frame structure (d) Maximum displacement curve of shear wall structure (e) Maximum moment curve of shear wall structure (f) Maximum shear curve of shear wall structure (g) Maximum displacement curve of multi-ribbed composite wall structure (h) Maximum moment curve of multi-ribbed composite wall structure (i) Maximum shear curve of multi-ribbed composite wall structure 1- Taft Wave, 2- El-Centro
It is not sensitive to the main period of seismic wave, and the reactions of Taft Wave and EL-Centro is nearly the same.
References [1] Yao Q.F. et al: Study on the Theory and Application of Multi-ribbed Composite Wall Structure, Xi'an University of Architecture and Technology (2000)

Döpp, Einfluss von Si, Mn, S, P, Cu, Ni, Cr, Mo und Al auf das eutektische Erstarrungsintervall von Fe-C Gusslegierungen, Gießerei-Forschung 56 (2004), 3, 110-115
El Sawny, M.
El Hebeary, I.
El Mahallawi, Effect of manganese, silicon and chromium additions on microstructure and wear characteristics of grey cast iron for sugar industries applications, Wear 390-391 (2017), 113-124

Kim, E.L.
Kojima et al.
Kim, E.L.
Song, E.L.

Stringer et al. [1] proposed that dispersed CeO2 and Y2O3 in Ni-Cr alloys act as nucleation sites for Cr2O3.
Thanneeru et al. [6] studied the hightemperature oxidation kinetics of 304 steels in the presence of nanocrystalline ceria (NC) and La 3+ doped nanocrystalline ceria (LDN) coatings.
El.
/Mat F1 F2 F3 El/Mat F1 F2 F3 [wt%] [ppm wt] [wt%] [ppm wt] B 0.03 0.02 Mn 0.43 0.55 [wt%] 0.56 [wt%] F <0.01 <0.01 Fe 76.96 Matrix Matrix �a 0.03 0.04 Co <0.010 23 23 Mg 0.12 0.20 Cu 0.0064 8.4 8.4 Al 0.16 320 330 Zn <5 <5 Si 0.021 16 8.3 Y <0.5 <0.5 P <0.001 16 16 Zr 0.82 0.91 S 32 46 �b =<30 =<30 Cl 0.04 0.12 Mo <0.010 4.1 1.7 K <0.05 <0.05 La 120 290 Ca 0.14 0.12 Ce 270 610 Ti 0.1 720 770 Pr 23 54 V <0.010 10 12 �d 8.2 19 Cr 22.18 Matrix Matrix C 0.002 0.005 [wt%] 0.019 [wt%] �i 0.11 Ta 0.0039 W 0.017 �b 0.003 Table 1.
Alloy final surface grain size [µm2] separation distance between ridges [µm] nodule size at ridge [µm] nodule size away from ridge [µm] average composition of scale at ridge [wt%] average composition of scale nodules away from ridge [wt%] F1 69.7 65 ~1 ~0.6 O ~35, Cr ~55, Mn ~9 O ~35,Cr ~54, Mn ~8, Fe ~0.5, Al~2 F2 160.6 82 ~0.7 ~0.7 O ~33, Cr ~53, Mn ~11, Ti ~2 O ~56, Cr ~40, Mn ~4 F3 63.5 Ridges not observable Ridges not observable ~1.1 Ridges not observable O ~22, Cr ~37, Mn ~16, Fe ~22, Al ~0.3 Table 2.