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Online since: October 2018
Authors: Hytham Abd El-Ghany
Abd El-Ghany, “Optical spectroscopic analysis of Fe2O3 doped CuO containing phosphate glass”, Opt.
El-Egili, “Infrared spectra of sodium phosphate glasses”, J.
Al-Ani, I.H.O.
Al-Hassany and Z.T.
Al-Dahan, “The optical properties and a.c. conductivity of magnesium phosphate glasses”, J.
El-Egili, “Infrared spectra of sodium phosphate glasses”, J.
Al-Ani, I.H.O.
Al-Hassany and Z.T.
Al-Dahan, “The optical properties and a.c. conductivity of magnesium phosphate glasses”, J.
Online since: July 2023
Authors: Aya Khalifa, Mohamad M. Ayad, Shaker Ebrahim, Ahmed El Said
Hierarchical Nitrogen Nanoporous Carbons by Surfactant-Assisted Synthesis of Zeolitic-Imidazolate Frameworks for High Performance Supercapacitor
Aya Khalifa1,2,a, Shaker Ebrahim3,b, Ahmed El Said1,4,c
and Mohamad M.
Ayad1,2,d* 1Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology, Borg-El-Arab City, Alexandria 21934, Egypt 2Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt 3Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, 163 Horrya Avenue, El-Shatby, Alexandria 21526, Egypt 4Mathematics and Engineering Physics Department, Faculty of Engineering, Mansoura University, PO 35516, Mansoura, Egypt aaya.khalifa@ejust.edu.eg, bshaker.ebrahim@alexu.edu.eg, cahmed.elsaid@ejust.edu.eg, dmohamad.ayad@ejust.edu.eg Keywords: Zeolitic imidazolate frameworks (ZIFs); Nitrogen-doped porous carbons (NPCs); Electrochemical energy storage; Supercapacitor Abstract.
Chmiola et al. found an irregular increase in specific capacitance when the electrode materials have a surface area and pore structure suitable to the ion diameter of the electrolyte [4].
Sulphoric acid (99%, EDWIC, El Nasr Pharmaceutical chemicals) was used as electrolyte.
Ayad1,2,d* 1Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology, Borg-El-Arab City, Alexandria 21934, Egypt 2Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt 3Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, 163 Horrya Avenue, El-Shatby, Alexandria 21526, Egypt 4Mathematics and Engineering Physics Department, Faculty of Engineering, Mansoura University, PO 35516, Mansoura, Egypt aaya.khalifa@ejust.edu.eg, bshaker.ebrahim@alexu.edu.eg, cahmed.elsaid@ejust.edu.eg, dmohamad.ayad@ejust.edu.eg Keywords: Zeolitic imidazolate frameworks (ZIFs); Nitrogen-doped porous carbons (NPCs); Electrochemical energy storage; Supercapacitor Abstract.
Chmiola et al. found an irregular increase in specific capacitance when the electrode materials have a surface area and pore structure suitable to the ion diameter of the electrolyte [4].
Sulphoric acid (99%, EDWIC, El Nasr Pharmaceutical chemicals) was used as electrolyte.
Online since: July 2018
Authors: Kostianyn Kushnir, Andriy Ostapovets
Three embedded atom method potentials were tested: Liu et al. potential [14],
Sun et al. potential [13] and Zhou et al. potential [21].
Structures of twin boundaries obtained by using of (a) Liu et al. potential; (b) Sun et al potential; (c) Zhou et al. potential.
Reflection twin boundary were predicted by Liu at al. and Zhou et al. potentials.
El Kadiri, The roles of grain boundary dislocations and disclinations in the nucleation of {1 0 -1 2} twinning, Acta Mater. 63 (2014) 1-15
El Kadiri, Impact of deformation faceting on {10-11}, {10-12} and {10-13} embryonic twin nucleation in hexagonal close-packed metals, Acta Mater. 70 (2014),137–161
Structures of twin boundaries obtained by using of (a) Liu et al. potential; (b) Sun et al potential; (c) Zhou et al. potential.
Reflection twin boundary were predicted by Liu at al. and Zhou et al. potentials.
El Kadiri, The roles of grain boundary dislocations and disclinations in the nucleation of {1 0 -1 2} twinning, Acta Mater. 63 (2014) 1-15
El Kadiri, Impact of deformation faceting on {10-11}, {10-12} and {10-13} embryonic twin nucleation in hexagonal close-packed metals, Acta Mater. 70 (2014),137–161
Online since: June 2007
Authors: Jung Hyeok Bae, Jong Min Moon, Soon Wook Jeong, Jae Wook Kang, Do Geun Kim, Sang Woo Kim, Han Ki Kim
All organic layers were grown on the amorphous IZO and
commercial ITO anode by thermal evaporation at 1×10
-7 Torr in the following order: hole transporting
layer (HTL)/emission layer (EL)/hole blocking layer (HBL)/electron transporting layer (ETL)/electron
injection layer (EIL) 40 nm-thick α-napthylphenlylbiphenyl (NPB) and 30 nm-thick
4,4'-bis(9-carbazolyl)-biphenyl (CBP) doped with 6 wt %[Ir(ppy)3] were used as the HTL and EL,
respectively.
Subsequently, a 10 nm-thick 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (bathocuproine: BCP) layer was grown on the EL layer as a HBL layer.
Finally, a 100 nm-thick Al cathode layer was patterned using a shadow metal mask.
He et al., in an investigation of the p-i-n structure of an OLED, reported improved EQE (19.5%) when a double emission layer (TCTA/TAZ) doped with [Ir(ppy)3] was used, which led to an expanded exciton generation region [4].
Mark et al., in an investigation of the high work function transparent conducting oxide as an anode for an OLED, reported that an IZO film has higher work function (5.2eV) than a commercial ITO (4.7eV) [5].
Subsequently, a 10 nm-thick 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (bathocuproine: BCP) layer was grown on the EL layer as a HBL layer.
Finally, a 100 nm-thick Al cathode layer was patterned using a shadow metal mask.
He et al., in an investigation of the p-i-n structure of an OLED, reported improved EQE (19.5%) when a double emission layer (TCTA/TAZ) doped with [Ir(ppy)3] was used, which led to an expanded exciton generation region [4].
Mark et al., in an investigation of the high work function transparent conducting oxide as an anode for an OLED, reported that an IZO film has higher work function (5.2eV) than a commercial ITO (4.7eV) [5].
Online since: October 2007
Authors: Nobuhiro Tsuji, Takuro Nakamura, Hiromoto Kitahara, Jung Goo Lee
Eight pieces of pure Al (99%)
sheets and seven pieces of pure Fe (99.5%) sheets were mutually stacked so that the overall
composition was Al-55at%Fe.
Although amorphous phase was found, the smallest halo ring is located at the inside of the Al (111) ring that is the strongest diffraction of Al.
If the amorphous phase formed from Al matrix (Al-Fe solid solution), the smallest halo ring should be normally located at the outside of Al (111) ring.
(2) Fe dissolved into Al during the ARB of Al/Fe multilayered to form Al-Fe supersaturated solid solution.
El-Eskandarany, J.
Although amorphous phase was found, the smallest halo ring is located at the inside of the Al (111) ring that is the strongest diffraction of Al.
If the amorphous phase formed from Al matrix (Al-Fe solid solution), the smallest halo ring should be normally located at the outside of Al (111) ring.
(2) Fe dissolved into Al during the ARB of Al/Fe multilayered to form Al-Fe supersaturated solid solution.
El-Eskandarany, J.
Online since: March 2016
Authors: Branislav Hadzima, Martin Lovíšek, Tatiana Liptáková
[3] ČERNÝ, M. et al.
U. et al.
G. et al: Corros.
[19] EL-MAHDY, G.
A. – et al.
U. et al.
G. et al: Corros.
[19] EL-MAHDY, G.
A. – et al.
Online since: January 2005
Authors: Ho Sup Sim, Kon Bae Lee, Hoon Kwon, Hyung Ryul Yang
Table 1 shows the tensile properties of in commercial 5052 Al, control 5052 Al and 5052 Al
composite reinforced with carbides.
The strength values in the control 5052 Al were 60-76 MPa greater than the commercial 5052 Al.
It can be seen that reaction products with various colors as well as B4C particles (dark gray) Material Designations UTS (MPa) YS (MPa) El (Pct) Commercial 5052 Al 200 - 78 - 32.5 - Control 5052 Al 276 - 138 - 23.4 - 5052 Al/B4C (24µm, 10%) 315 - 195 - 11.3 - 5052 Al/SiC (22µm, 10%) 226 - 121 - 12.0 - 5052 Al/TiC (7µm, 10%) 301 - 181 - 9.5 - 5052 Al/SiC (10µm, 20%) 310 210 - 7.5 - are observed, as shown in Figure 1(a).
Reaction products in the 5052 Al/B4C composite were formed on B4C particles as well as in the Al matrix far from the B4C particles, while reaction product in 5052 Al/SiC composite was formed mainly on SiC particles, as shown Fig. 1.
As shown Table 1, the strengths of the 5052 Al/TiC composite was in the range of 39-57 MPa greater than that of the 5052 control Al.
The strength values in the control 5052 Al were 60-76 MPa greater than the commercial 5052 Al.
It can be seen that reaction products with various colors as well as B4C particles (dark gray) Material Designations UTS (MPa) YS (MPa) El (Pct) Commercial 5052 Al 200 - 78 - 32.5 - Control 5052 Al 276 - 138 - 23.4 - 5052 Al/B4C (24µm, 10%) 315 - 195 - 11.3 - 5052 Al/SiC (22µm, 10%) 226 - 121 - 12.0 - 5052 Al/TiC (7µm, 10%) 301 - 181 - 9.5 - 5052 Al/SiC (10µm, 20%) 310 210 - 7.5 - are observed, as shown in Figure 1(a).
Reaction products in the 5052 Al/B4C composite were formed on B4C particles as well as in the Al matrix far from the B4C particles, while reaction product in 5052 Al/SiC composite was formed mainly on SiC particles, as shown Fig. 1.
As shown Table 1, the strengths of the 5052 Al/TiC composite was in the range of 39-57 MPa greater than that of the 5052 control Al.
Online since: June 2015
Authors: Sib Krishna Ghoshal, R. Arifin, Md Rahim Sahar, Nur Asilah Zulkifeli
The estimated values of ΔE are in consistent with the report of El-Deen et al. [16].
El-Rabaie, A.A.
El-Adawy, A.A.
El-Rabaie, A.S.
Al Salhi, M.M.
El-Rabaie, A.A.
El-Adawy, A.A.
El-Rabaie, A.S.
Al Salhi, M.M.
Online since: June 2017
Authors: Xing Fa Ma, Shi Sheng Lv, Jian Xun Qiu, Xin Tao Zhang, Lin Bian, Ming Jun Gao, Xiao Chun He, Guang Li
Abd-El-Aziz and co-workes [44]designed blue fluorescence emitter star-shaped macromolecules based on pyrene and anthracene.
Abd-El-Aziz and co-workes [46] reported aggregation enhanced excimer emission (AEEE) with efficient blue emission based on pyrene dendrimers.
Pyrene compounds containing –NH2 and –COOH groups,et al. were purchased from Sigma-Aldrich, USA.
Abd-El-Aziz, A.
Abd-El-Aziz, A.
Abd-El-Aziz and co-workes [46] reported aggregation enhanced excimer emission (AEEE) with efficient blue emission based on pyrene dendrimers.
Pyrene compounds containing –NH2 and –COOH groups,et al. were purchased from Sigma-Aldrich, USA.
Abd-El-Aziz, A.
Abd-El-Aziz, A.
Online since: August 2011
Authors: Amin Chegenizadeh, Hamid Nikraz
Other researchers (Nataraj and McManis, 1997; Al Wahab and El-Kedrah, 1995; Puppala et al., 2006; Miller and Rifai, 2004; Ozkul et al., 2007; Kumar Tabor, 2003) also reported similar results.
In contrast, other researcher such as Ozkul et al, 2007 reported not significant changes on compaction parameter by fiber inclusion.
Reference [1] AlWahab, R.M. and Al Quirma, H.H. (1995) Fiber Reinforced Cohesive Soils for Application in Compacted Earth Structures, Proceedings of Geosynthetics ’95, IFAI, Vol. 2, Nashville, Tennessee, USA, March 1995, pp. 433-476
[2] Al Wahab, R.
M., and El-Kedrah, M.
In contrast, other researcher such as Ozkul et al, 2007 reported not significant changes on compaction parameter by fiber inclusion.
Reference [1] AlWahab, R.M. and Al Quirma, H.H. (1995) Fiber Reinforced Cohesive Soils for Application in Compacted Earth Structures, Proceedings of Geosynthetics ’95, IFAI, Vol. 2, Nashville, Tennessee, USA, March 1995, pp. 433-476
[2] Al Wahab, R.
M., and El-Kedrah, M.