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Online since: November 2012
Authors: João M.P. Coelho, Catarina Silva, Andreia Ruivo, António Pires de Matos
El-Sayed, Size and Temperature Dependence of the Plasmon Absorption of Colloidal Gold Nanoparticles, J.
Al-Harthi, M.
Al-Harthi, M.
Online since: June 2010
Authors: Seong Jun Park, Chang Seok Oh, Sung Joon Kim, Byoung Chul Hwang, Tae Ho Lee
Recently, Milititsky et al. [3] reported that the addition of Cu to
the 18Cr-(12,18)Mn-(0.3~0.5)N steels was effective in improving low-temperature toughness
because an increase in stacking fault energy associated with Cu alloying may reduce the planarity of
the deformation microstructure by allowing cross-slip to occur.
Table 2 Tensile and Charpy impact properties Tensile properties Charpy impact properties Steels YS (MPa) TS (MPa) Uniform El. (%) USE (J/cm2) Measured DBTT ( o C) Predicted DBTT* ( o C) 2Ni-0.36N 511 847 43.0 331.2 −82.5 −193.8 2Cu-0.35N 413 645 46.5 265.8 −81.6 −195.9 1Cu-0.37N 437 788 63.0 339.3 −53.8 −188.0 2Ni-1Cu-0.35N 428 768 52.8 309.8 −104.6 −195.1 * DBTT = 300 [%N] - 303 (oC) [2] Fractography Figure 3 shows SEM fractographs of Charpy impact specimens of the 2Ni-1Cu-0.35N steel tested at -196, -120, and +20 oC.
Table 2 Tensile and Charpy impact properties Tensile properties Charpy impact properties Steels YS (MPa) TS (MPa) Uniform El. (%) USE (J/cm2) Measured DBTT ( o C) Predicted DBTT* ( o C) 2Ni-0.36N 511 847 43.0 331.2 −82.5 −193.8 2Cu-0.35N 413 645 46.5 265.8 −81.6 −195.9 1Cu-0.37N 437 788 63.0 339.3 −53.8 −188.0 2Ni-1Cu-0.35N 428 768 52.8 309.8 −104.6 −195.1 * DBTT = 300 [%N] - 303 (oC) [2] Fractography Figure 3 shows SEM fractographs of Charpy impact specimens of the 2Ni-1Cu-0.35N steel tested at -196, -120, and +20 oC.
Online since: March 2017
Authors: Samya Dahbi, Latifa Ezzine, Haj El Moussami
Modeling of Cutting Performances in Turning Process Using
Multiple Regression Method
Samya DAHBI1, a*, Latifa EZZINE2, b, Haj EL MOUSSAMI1, c
1 ENSAM School, Moulay Ismail University, P.O.
Box 15290, Al Mansour, Meknes, Morocco 2 EST School, Moulay Ismail University, P.O.
Effects of cutting edge geometry, workpiece hardness, feed rate, and cutting speed on surface roughness and cutting forces in finish turning were investigated by Őzel et al. [13].
According to the study conducted by Agrawal et al. [14], the effect of feed rate on surface roughness is low at low levels of surface roughness and high as surface roughness increases.
Kumar et al. [15] investigated the effects of cutting parameters in turning of carbon alloy steels.
Box 15290, Al Mansour, Meknes, Morocco 2 EST School, Moulay Ismail University, P.O.
Effects of cutting edge geometry, workpiece hardness, feed rate, and cutting speed on surface roughness and cutting forces in finish turning were investigated by Őzel et al. [13].
According to the study conducted by Agrawal et al. [14], the effect of feed rate on surface roughness is low at low levels of surface roughness and high as surface roughness increases.
Kumar et al. [15] investigated the effects of cutting parameters in turning of carbon alloy steels.
Online since: March 2014
Authors: Nabil Al-Aqtash, Khaldoun Tarawneh
Role of Vacancies in Zigzag Graphene Nanoribbons: An Ab Initio Study
Khaldoun Tarawneh1, a, Nabil Al-Aqtash2, b
1Princess Sumaya University for Technology, Amman 11941, Jordan
2University of Nebraska at Omaha, Omaha, NE 68182, USA
akhaldoun@psut.edu.jo (corresponding author), bnalaqtash@unomaha.edu
[Submitted: November 4, 2013; revised: December 15, 2013; accepted: December 29, 2013]
Keywords: Density functional calculations, ZGNR, single vacancy, double vacancies.
El-Barbary, R.H.
El-Barbary, R.H.
Online since: November 2012
Authors: Lu Bai, Jing Jing Fan
Chengcheng Xu, et al. (1) divided freeway traffic flow into different states, andevaluated the safety performance associated with each state.
Hongyun Chen, et al. (2) (3) evaluated the safety impacts of lane arrangements on freeway segments with closely spaced entrance and exit ramps.
Wang et al. (4) examined the truck-related crash counts at freeway diverge areas.
Pan Liu, et al. (5) developed a procedure for estimating the capacity of U-turn movement at median openings onmultilane highways.
[14] El-Basyouny, K. and T.
Hongyun Chen, et al. (2) (3) evaluated the safety impacts of lane arrangements on freeway segments with closely spaced entrance and exit ramps.
Wang et al. (4) examined the truck-related crash counts at freeway diverge areas.
Pan Liu, et al. (5) developed a procedure for estimating the capacity of U-turn movement at median openings onmultilane highways.
[14] El-Basyouny, K. and T.
Online since: June 2014
Authors: Ismail Hanafi, Neng Sri Suharty, Kuncoro Dihardjo, Muhammad Nizam, Maulidan Firdaus
Absorption at 913-1002 cm-1 shown the Al-O and Mg-O groups [13,14].
Mg(OH)2 and Al(OH)3 in burning process will undergo: 2A1(OH)3 à Al2O3 + 3H2O; and Mg(OH)2àMgO + H2O.
However, decomposition temperature of Al(OH)3 is at 200°C [8,10,11].
It had been reported in previous work [9] that Mg(OH)2 and Al(OH)3 can act as flame retardant to plastics at a higher loading.
El-Meligy Magda: Effect of Addition of Boric Acid and Borax on Fire-Retardant and Mechanical Properties of Urea Formaldehyde Saw Dust Composites.
Mg(OH)2 and Al(OH)3 in burning process will undergo: 2A1(OH)3 à Al2O3 + 3H2O; and Mg(OH)2àMgO + H2O.
However, decomposition temperature of Al(OH)3 is at 200°C [8,10,11].
It had been reported in previous work [9] that Mg(OH)2 and Al(OH)3 can act as flame retardant to plastics at a higher loading.
El-Meligy Magda: Effect of Addition of Boric Acid and Borax on Fire-Retardant and Mechanical Properties of Urea Formaldehyde Saw Dust Composites.
Online since: April 2023
Authors: Ahmed Basim Taha, Mohammed Shaalan Essa, Bahaa Toama Chiad
Adriele et al [11] also showed that when the reaction time increased the magnetite phase decreased with an increase in the hematite phase and the Peak intensities are seen to increase due to the increase in crystallinity and particle size.
Al-Mamun, M.
D Souza, Kinetics of Thermal Transformation of Synthetic Al-Maghemites into Al-Hematites, Revi.
Al-Alawy, Synthesis and characterization of coated magnetic nanoparticles and its application as coagulant for removal of oil droplets from oilfield produced water, AIP Conf.
El Afifi , M.F.
Al-Mamun, M.
D Souza, Kinetics of Thermal Transformation of Synthetic Al-Maghemites into Al-Hematites, Revi.
Al-Alawy, Synthesis and characterization of coated magnetic nanoparticles and its application as coagulant for removal of oil droplets from oilfield produced water, AIP Conf.
El Afifi , M.F.
Online since: June 2010
Authors: Erween Abdul Rahim, Hiroyuki Sasahara
Similarly, as reported by Ezuqwu et al. [5]
increasing the cutting speed and feed rate increases the hardness and depth of the affected layer.
Ezugwu et al. [5] had shown that high pressure coolant supply demonstrated thinner deformation layer as in comparison to conventional coolant supply.
Zou et al. [4] reported that surface cavities were associated with the plastic deformation.
Sharman et al. [6] reported that surface cavities, tearing and smearing were the dominant surface damage when using new tools.
El-Khabeery, S.M.
Ezugwu et al. [5] had shown that high pressure coolant supply demonstrated thinner deformation layer as in comparison to conventional coolant supply.
Zou et al. [4] reported that surface cavities were associated with the plastic deformation.
Sharman et al. [6] reported that surface cavities, tearing and smearing were the dominant surface damage when using new tools.
El-Khabeery, S.M.
Online since: January 2020
Authors: Mohammad Sukri Mustapa, Raha Abdul Rahman, Mohd Idrus Mohd Masirin, Abdullah Wagiman, Ahmed Suliman B. Ali, Muhammad Isom Aziz
Allam Musbah Al-Allam and Dr.
Proc., vol. 1846 (2017), p. 2008-1 [5] Masirin, M.I.M, Al Allam, A.M. and Ali, A.S.B: Pertanika Journal of Science and Technology, vol 25 (2017), p. 101 [6] H.
El-Badawy, A.
Al-Mansob, and D.
Al-Qadi, P.
Proc., vol. 1846 (2017), p. 2008-1 [5] Masirin, M.I.M, Al Allam, A.M. and Ali, A.S.B: Pertanika Journal of Science and Technology, vol 25 (2017), p. 101 [6] H.
El-Badawy, A.
Al-Mansob, and D.
Al-Qadi, P.
Online since: December 2024
Authors: Chaiyut Sumpavakup, Natchaporn Kasemsinthu, Pharida Jeebklum, Chawalit Panya-Isara
Aqueel Ahmad et al proposed a solution to the misalignment issue using a Hall-effect sensor analyzed through finite element analysis.
Yuan-Hua Zhang et al proposed a wirelessly charging battery system that automatically adjusts its position to an optimal charging location using an XY-axis movable platform.
Villa et al suggest improvements and investigate the behavior of wireless power transfer systems that require precise coil alignment for optimal energy transfer.
The practical application of wireless charging was proposed by Aqueel Ahmad et al.
El-Shahat, A.
Yuan-Hua Zhang et al proposed a wirelessly charging battery system that automatically adjusts its position to an optimal charging location using an XY-axis movable platform.
Villa et al suggest improvements and investigate the behavior of wireless power transfer systems that require precise coil alignment for optimal energy transfer.
The practical application of wireless charging was proposed by Aqueel Ahmad et al.
El-Shahat, A.