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Online since: March 2014
Authors: Zhi Qing Zhang, Rui Fu Qin
El Naggar [6] developed a spring stiffness transfer model to investigate the dynamic torsional and vertical impedance of the composite soil layer.
In light of this, based on Biot’s dynamic consolidation theory [7], Zhang et al. [8] investigated the dynamic torsional impedance of pile embedded in radially inhomogeneous saturated soil.
Torsional Impedance of a Pile By utilizing the solution for shear rigidity of the radially inhomogeneous saturated soil under a time-harmonic torsional loading proposed by Zhang et al.[8], the can be given in an analytical form.
El Naggar, Vertical and torsional soil reactions for radially inhomogeneous soil layer, Structural Engineering and Mechanics. 10 (2000) 299-312
In light of this, based on Biot’s dynamic consolidation theory [7], Zhang et al. [8] investigated the dynamic torsional impedance of pile embedded in radially inhomogeneous saturated soil.
Torsional Impedance of a Pile By utilizing the solution for shear rigidity of the radially inhomogeneous saturated soil under a time-harmonic torsional loading proposed by Zhang et al.[8], the can be given in an analytical form.
El Naggar, Vertical and torsional soil reactions for radially inhomogeneous soil layer, Structural Engineering and Mechanics. 10 (2000) 299-312
Online since: December 2006
Authors: Hai Bo Li, Jun Ru Li, Hai Peng Feng, Bo Liu
For, example, Jafari el al [6] conducted
series tests to study the strength of concrete joint samples under normal stress of 4 MPa and shear
velocities varying from 0.005-0.4mm/s, as well as different loading cycles.
Simlar works were also conducted by Jing et al, Homand et al, Hutson and Dowding, Lee et al and Plesha [7-11].
Based on the experimental works, Jafari el al and Jing et al [6-7] also primarily presented a constitutive relation of rock joint under dynamic cyclic loading condition.
References 1) Cai MF, He MCh, Liu DY et al.
F.Pellet et al.
Simlar works were also conducted by Jing et al, Homand et al, Hutson and Dowding, Lee et al and Plesha [7-11].
Based on the experimental works, Jafari el al and Jing et al [6-7] also primarily presented a constitutive relation of rock joint under dynamic cyclic loading condition.
References 1) Cai MF, He MCh, Liu DY et al.
F.Pellet et al.
Online since: June 2020
Authors: Rosdi Daud, M.M. Mustaqieem, A. Shah, Andril Arafat, M. S. Dambatta, Hassan Mas Ayu
[2] Aumnakmanee, S., et al., Finite element analysis of dental implant prosthetics.
[3] El-Anwar, M.I. and M.M.
El-Zawahry, A three dimensional finite element study on dental implant design.
[6] Daud, R., et al., Neural Network as an Assisting Tool in Designing Talus Implant.
[7] Merdji, A., et al., Stress analysis in dental prosthesis.
[3] El-Anwar, M.I. and M.M.
El-Zawahry, A three dimensional finite element study on dental implant design.
[6] Daud, R., et al., Neural Network as an Assisting Tool in Designing Talus Implant.
[7] Merdji, A., et al., Stress analysis in dental prosthesis.
Online since: January 2009
Authors: Hamza Boukhlouf, R. Benrabaa, S. Barama, A. Barama
Barama
2, d
1
Macromolecular Chemistry laboratory, UER-CA, E.M.P, Bordj El-Bahri, Algiers, Algeria
2 Chemistry laboratory of Natural gas, Chemistry Faculty, USTHB, BP32 El Alia, 16111
Bab Ezzouar, Algiers, Algeria
a
email:
boukhloufhamza@gmail.com, b email:rafikemp@gmail.com,
c
email: Siham_barama@yahoo.com, deamil: a_barama@yahoo.fr
Keywords: Ethane, ethylene, oxidative dehydrogenation, molybdenum based catalysts.
The alumina and silica supported NiMoO4 catalysts (with Ni:Mo:Al (or Si) = 1:1:10) were prepared by a co-precipitation/impregnation technique in the previous conditions using the same metallic precursors and γ-Alumina and silica as the supports.
Table 1: Composition and surface properties of unsupported and supported catalysts Catalyst SEM-EDX AAS SBET [m 2/g] Vp[cm3/g] Dp [nm] Ni:Mo 0.9:1 0.97:1 39 0.2 21 Ni:Mo:Al 0.96:1:9.8 0.97:1:9.94 4.8 0.02 22 Ni:Mo:Si 0.97:1:9.7 0.97:1:9.56 176 0.72 16 AAS analysis and SEM-EDX investigations showed that the real composition is close to the theoretical composition (ratios of Ni:Mo ≈1:1 and Ni:Mo: Al(or Si) ≈ 1:1:10) which means that the conditions of the catalyst preparation are achieved. 10 20 30 40 50 60 70 ∗∗∗∗∗∗∗∗ β ββ ββ β ββ β ∆ ∆ ∆ ∆ ∗ ∆ Γ Γ Γ Γ Γ Γ Γ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ Φ ∆∆∆∆∆ ∆ ∆ ∆ ∆ ∆∆∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆∆ ∆ ∆ ∆ ∆∆ ∆ ∆ ∆ Ni-Mo-O/SiO2 Ni-Mo-O/Al2O3 Ni-Mo-O Intensity (a.u.) 2θ(°) ∆ Φ ∆∆ Γ ∗ β a) 200 400 600 800 1000 1200 1400 960 960 914705 705 Ni-Mo-O/SiO2 Ni-Mo-O/Al2O3 Ni-Mo-O Intensity (a.u.)
The alumina and silica supported NiMoO4 catalysts (with Ni:Mo:Al (or Si) = 1:1:10) were prepared by a co-precipitation/impregnation technique in the previous conditions using the same metallic precursors and γ-Alumina and silica as the supports.
Table 1: Composition and surface properties of unsupported and supported catalysts Catalyst SEM-EDX AAS SBET [m 2/g] Vp[cm3/g] Dp [nm] Ni:Mo 0.9:1 0.97:1 39 0.2 21 Ni:Mo:Al 0.96:1:9.8 0.97:1:9.94 4.8 0.02 22 Ni:Mo:Si 0.97:1:9.7 0.97:1:9.56 176 0.72 16 AAS analysis and SEM-EDX investigations showed that the real composition is close to the theoretical composition (ratios of Ni:Mo ≈1:1 and Ni:Mo: Al(or Si) ≈ 1:1:10) which means that the conditions of the catalyst preparation are achieved. 10 20 30 40 50 60 70 ∗∗∗∗∗∗∗∗ β ββ ββ β ββ β ∆ ∆ ∆ ∆ ∗ ∆ Γ Γ Γ Γ Γ Γ Γ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ Φ ∆∆∆∆∆ ∆ ∆ ∆ ∆ ∆∆∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆ ∆∆ ∆ ∆ ∆ ∆∆ ∆ ∆ ∆ Ni-Mo-O/SiO2 Ni-Mo-O/Al2O3 Ni-Mo-O Intensity (a.u.) 2θ(°) ∆ Φ ∆∆ Γ ∗ β a) 200 400 600 800 1000 1200 1400 960 960 914705 705 Ni-Mo-O/SiO2 Ni-Mo-O/Al2O3 Ni-Mo-O Intensity (a.u.)
Online since: November 2013
Authors: Liu Ho Chiu, Kuan Hung Chen, Chi Ying Tsai, Shah Rong Lee
The anodizing AA6061 Al plate process can effectively reduce the galvanic corrosion of the AA6061 Al and C1100 Cu couples.
Kihn et al. studied the galvanic corrosion of Al-Cu alloy and concluded that the greater susceptibility to pitting resulted from second phase particles in the alloy [5].
An AA 6061 Al sheet was cut into specimens with dimension of 2×25×80 mm.
El-Houd, and F.
El-Shawesh: Mater. and Design, 29 (2008) p. 801
Kihn et al. studied the galvanic corrosion of Al-Cu alloy and concluded that the greater susceptibility to pitting resulted from second phase particles in the alloy [5].
An AA 6061 Al sheet was cut into specimens with dimension of 2×25×80 mm.
El-Houd, and F.
El-Shawesh: Mater. and Design, 29 (2008) p. 801
Online since: December 2013
Authors: De Liang Zeng, Yong Hu, Wei Wang
[6] El-Dessouky H T A, Al-Haddad A, Al-Juwayhel F.
Industrial & Engineering Chemistry, 1961, 53(2): 121-126. -[14] Lebrun J, Silva C A, Trebilcock F, et al.
[8] El-Dessouky H T A, Al-Haddad A, Al-Juwayhel F.
[12] Benton D J, Bowman C F, Hydeman M, et al.
[14] Lebrun J, Silva C A, Trebilcock F, et al.
Industrial & Engineering Chemistry, 1961, 53(2): 121-126. -[14] Lebrun J, Silva C A, Trebilcock F, et al.
[8] El-Dessouky H T A, Al-Haddad A, Al-Juwayhel F.
[12] Benton D J, Bowman C F, Hydeman M, et al.
[14] Lebrun J, Silva C A, Trebilcock F, et al.
Online since: May 2012
Authors: Hong Tao Bai, Zhi Xi Zhu, He Xu, Hui Zhi Wang, Guang Qiang Liang
Then the environmental impact assessment (EIA) has been legally implemented and made great contribution to the scientific development (Bao el al., 2004).
Chinese EIA experts and officials also gradually recognize that environmental considerations should be integrated into the transport strategy decision-making process at the national, provincial and municipal levels to prevent or mitigate the cumulative and regional/global impacts that are unable to be solved in the project EIA (Bao el al., 2004).
In terms of the literatures on transport SEA in Chinese, more attentions are drawn to the theoretic researches on the procedures, scoping and methodologies (Dai et al., 2004; Zhang et al., 2006; Wu, 2006; Chen, 2009).
The complexities related to transport planning system highlight the need for the SEA methodologies to deal with uncertainties (Zhang et al., 2006; Wu, 2006).
[2] Alison, D., Mike, J., Tadhg, M. et al.
Chinese EIA experts and officials also gradually recognize that environmental considerations should be integrated into the transport strategy decision-making process at the national, provincial and municipal levels to prevent or mitigate the cumulative and regional/global impacts that are unable to be solved in the project EIA (Bao el al., 2004).
In terms of the literatures on transport SEA in Chinese, more attentions are drawn to the theoretic researches on the procedures, scoping and methodologies (Dai et al., 2004; Zhang et al., 2006; Wu, 2006; Chen, 2009).
The complexities related to transport planning system highlight the need for the SEA methodologies to deal with uncertainties (Zhang et al., 2006; Wu, 2006).
[2] Alison, D., Mike, J., Tadhg, M. et al.
Online since: August 2013
Authors: Kitipun Boonin, Yotsakit Ruangtaweep, Nattapon Srisittipokakun, Patarawagee Yasaka, Jakrapong Kaewkhao
Romero et al [2] have reported the feasibility results of recycling sugar cane biogases ash (SCBA) to produce glass-ceramic.
Ruangtaweep et al [3] have prepared glass from rice husk ash (RHA) doped with CoO.
Doweidar et al. [4], but not study effect of heat treatment on properties of RSA.
El-Damrawi, G.
El-Egili, K.
Ruangtaweep et al [3] have prepared glass from rice husk ash (RHA) doped with CoO.
Doweidar et al. [4], but not study effect of heat treatment on properties of RSA.
El-Damrawi, G.
El-Egili, K.