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Online since: December 2009
Authors: J.S. Ajiboye, S.A. Balogun, A.T. Agboola, G.J. Eke
Shen et al [4] studied severe
plastic deformation (SPD) in an eutectic tin-lead alloy by imposing fast bending at room
temperature, in an attempt to examine the microstructural response in the absence of thermally
activated diffusion processes.
Widlicki et al [5] investigated the influence of hydrostatic extrusion on the microstructure of 6082 aluminium alloy.
Based on these results, they proposed a modification to ASME Code formulae for calculation of more realistic values of the stress indices for bends up to 180 o Krzysztof et al [7] examined how various SPD processes, in particular hydrostatic extrusion (HE), alter the microstructure and properties of metals with different stacking fault energies, such as copper and aluminum.
Chemical composition of the lead alloy examined (% wt) Pb Sn Sb Cu As Bi Zn Al Cd 84.6 5.35 8.13 0.7 0.25 0.10 0.005 0.005 0.05 The sand cast billets were machined to a size slightly smaller than that of the container for smooth insertion of the billet into the container.
El-Kebir and J.K.
Widlicki et al [5] investigated the influence of hydrostatic extrusion on the microstructure of 6082 aluminium alloy.
Based on these results, they proposed a modification to ASME Code formulae for calculation of more realistic values of the stress indices for bends up to 180 o Krzysztof et al [7] examined how various SPD processes, in particular hydrostatic extrusion (HE), alter the microstructure and properties of metals with different stacking fault energies, such as copper and aluminum.
Chemical composition of the lead alloy examined (% wt) Pb Sn Sb Cu As Bi Zn Al Cd 84.6 5.35 8.13 0.7 0.25 0.10 0.005 0.005 0.05 The sand cast billets were machined to a size slightly smaller than that of the container for smooth insertion of the billet into the container.
El-Kebir and J.K.
Online since: February 2013
Authors: Jun Zhang, Shu Bin Wu, Bo Li
Moreau et al. [7,8] studied the dehydration of fructose in the presence of dealuminated H-form mordenite at 438 K in a solvent of water and MIBK (Methyl Iso Butyl Ketone), and a fructose conversion of 76% and a 5-HMF selectivity of 92% were achieved at the same time.
Takagaki et al. [9] found that 42-54% yield of 5-HMF could be produced from glucose and sucrose through a simple one-pot synthesis using a combination of Amberlyst-15 and Mg-Al hydrotalcite as catalyst in N,N-dimethylformamide at 373 K.
The sulfur content of catalyst was determined with Elementar Vario EL according to the general method of element analysis (JY/T017-1996).
However, glucose could be converted into fructose after two-step isomerization, so the whole proposed mechanism for the conversion of high fructose corn syrup into 5-HMF was shown in Scheme 1, based on the present study and previous work from Van Dam [17], Antal [18] and Kruster et al [19].
Takagaki et al. [9] found that 42-54% yield of 5-HMF could be produced from glucose and sucrose through a simple one-pot synthesis using a combination of Amberlyst-15 and Mg-Al hydrotalcite as catalyst in N,N-dimethylformamide at 373 K.
The sulfur content of catalyst was determined with Elementar Vario EL according to the general method of element analysis (JY/T017-1996).
However, glucose could be converted into fructose after two-step isomerization, so the whole proposed mechanism for the conversion of high fructose corn syrup into 5-HMF was shown in Scheme 1, based on the present study and previous work from Van Dam [17], Antal [18] and Kruster et al [19].
Online since: April 2009
Authors: Graeme E. Murch, Alexander V. Evteev, Elena V. Levchenko, Irina V. Belova
For example, Sun et al., [3] have developed a simple and generic approach for
the large-scale synthesis of hollow nanostructures made of Au, Pt and Pd.
Using the Kirkendall effect at the nano-level, Yin et al. [4] demonstrated the formation of hollow nanospheres of cobalt oxide, sulphide and selenide starting with nanocrystals of cobalt in an environment of the non-metal.
We chose the Metropolis et al. algorithm for its transparency and to provide a clear relationship between KMC steps per atom (KMCSA) n and real time t.
Erdonmez, et al.: Science Vol. 304 (2004), p. 711
Allnatt, E.L.
Using the Kirkendall effect at the nano-level, Yin et al. [4] demonstrated the formation of hollow nanospheres of cobalt oxide, sulphide and selenide starting with nanocrystals of cobalt in an environment of the non-metal.
We chose the Metropolis et al. algorithm for its transparency and to provide a clear relationship between KMC steps per atom (KMCSA) n and real time t.
Erdonmez, et al.: Science Vol. 304 (2004), p. 711
Allnatt, E.L.
Online since: July 2014
Authors: Yu Liu, Jun Xue Ren, Kalomba Mboyi
Radchenko, et al.
Jordan, E.L.
Polk, et al., Validation of the NSTAR ion propulsion system on the Deep Space One mission - Overview and initial results, in 35th Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics, Reston , 1999
Polk, et al., An overview of the results from an 8200 hour wear test of the NSTAR ion thruster, in 35th Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics, Reston , 1999
Brophy, et al., Ion Propulsion System (NSTAR) DS1 Technology Validation Report, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 1999.
Jordan, E.L.
Polk, et al., Validation of the NSTAR ion propulsion system on the Deep Space One mission - Overview and initial results, in 35th Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics, Reston , 1999
Polk, et al., An overview of the results from an 8200 hour wear test of the NSTAR ion thruster, in 35th Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics, Reston , 1999
Brophy, et al., Ion Propulsion System (NSTAR) DS1 Technology Validation Report, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 1999.
Online since: June 2018
Authors: Khushdeep Goyal, Deepak Kumar Goyal, Kuldeep Singh
Singh et al. [4] described a case study to analyse the material removal rate (MRR) by the cryogenically treated zinc covered metal and cryogenic treated plain metal wire anodes.
Dhoe et al. [13] showed the effect of process parameter and effect of heat treatment on surface roughness of tool steel AISI D2 cut with CuZn37 master brass wire having 0.25mm diameter having tensile strength 900N/mm2 and De-ionized water (Ph value 12.5) was used as dielectric medium in WEDM with various input process parameters pulse on time(105-125units), pulse off time(40-60units), servo voltage (15-45 volt) and peak current (70-110 units) to minimized the surface roughness.
El-Taweel and A.
Mathur, "Carbon nanotubes: amino functionalization and its application in the fabrication of Al-matrix composites," Powder Technology, Vol. 215, pp. 254-263, 2012
Rao, "Optimisation of process parameters for multi-performance characteristics in EDM of Al 2 O 3 ceramic composite," The International Journal of Advanced Manufacturing Technology, Vol. 47, No. 9, pp. 1137-1147, 2010
Dhoe et al. [13] showed the effect of process parameter and effect of heat treatment on surface roughness of tool steel AISI D2 cut with CuZn37 master brass wire having 0.25mm diameter having tensile strength 900N/mm2 and De-ionized water (Ph value 12.5) was used as dielectric medium in WEDM with various input process parameters pulse on time(105-125units), pulse off time(40-60units), servo voltage (15-45 volt) and peak current (70-110 units) to minimized the surface roughness.
El-Taweel and A.
Mathur, "Carbon nanotubes: amino functionalization and its application in the fabrication of Al-matrix composites," Powder Technology, Vol. 215, pp. 254-263, 2012
Rao, "Optimisation of process parameters for multi-performance characteristics in EDM of Al 2 O 3 ceramic composite," The International Journal of Advanced Manufacturing Technology, Vol. 47, No. 9, pp. 1137-1147, 2010
Online since: March 2018
Authors: Youssef Saada, Nadia Ouadoudi, Rachid Skouri, Abdelmajid Daya, E.M. Yahyaoui
The works of Mustapha and al [4] are geared towards optimizing the effect of imperfect preventive maintenance actions on a redundant system.
While Maryam and al [5] dealt with the problem of optimizing maintenance by applying routine preventive maintenance interventions.
D and al [6] worked on the periodic planning of the three actions (simple service, preventive repair and replacement), the choice of the action to be applied is closely linked to the results of the inspections.
The study of the efficiency of the system in relation to the expected cost of the life cycle has been improved by Pascual and al [7], by proposing a maintenance model dedicated to production systems protected against demand fluctuations and failures with elements such as batteries and redundancy of production lines.
P, El Mawaziny.
While Maryam and al [5] dealt with the problem of optimizing maintenance by applying routine preventive maintenance interventions.
D and al [6] worked on the periodic planning of the three actions (simple service, preventive repair and replacement), the choice of the action to be applied is closely linked to the results of the inspections.
The study of the efficiency of the system in relation to the expected cost of the life cycle has been improved by Pascual and al [7], by proposing a maintenance model dedicated to production systems protected against demand fluctuations and failures with elements such as batteries and redundancy of production lines.
P, El Mawaziny.
Online since: October 2018
Authors: Kari Mäntyjärvi, Kimmo Mäkelä, Tero Jokelainen, Aappo Mustakangas, Jari Mäkelä
Proposal for a standardized test artifact for additive manufacturing machines and processes. 23rd annual international solid freeform fabrication symposium, Austin, TX (2012, August), pp. 902-920 At online: https://www.nist.gov/sites/default/files/documents/el/isd/sbm/Moylan-SFF-Test-Artifact.pdf
Santos, et al.Rapid manufacturing of metal components by laser forming.
Johnson, et al.
[7] Kruth J-P, et al.
Gao, et al.
Santos, et al.Rapid manufacturing of metal components by laser forming.
Johnson, et al.
[7] Kruth J-P, et al.
Gao, et al.
Online since: June 2020
Authors: Amarnadh N.R. Reddy, Hamdan Sinin, Mohd Nurfirdaus Mohiddin, Abu Saleh Ahmed
Rehan et al., Waste to biodiesel: A preliminary assessment for Saudi Arabia, Bioresour.
Islam et al., A novel method for the synthesis of calcium carbonate (aragonite) nanoparticles from cockle shells, Powder Technol., vol. 235, (2013) pp. 70–75
El-Gendy, A.
Pan et al., Mesoporous polymeric solid acid as efficient catalyst for (trans)esterification of crude Jatropha curcas oil, Fuel Process.
Mazaheri et al., Rice bran oil based biodiesel production using calcium oxide catalyst derived from Chicoreus brunneus shell, Energy, vol. 144, (2018) pp. 10–19
Islam et al., A novel method for the synthesis of calcium carbonate (aragonite) nanoparticles from cockle shells, Powder Technol., vol. 235, (2013) pp. 70–75
El-Gendy, A.
Pan et al., Mesoporous polymeric solid acid as efficient catalyst for (trans)esterification of crude Jatropha curcas oil, Fuel Process.
Mazaheri et al., Rice bran oil based biodiesel production using calcium oxide catalyst derived from Chicoreus brunneus shell, Energy, vol. 144, (2018) pp. 10–19