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Online since: April 2020
Authors: Meng Xi Zhang
This review will provide useful guidance for researchers working in the design of CMOF materials and their related asymmetric catalytic applications.
Science (2003), 300 (5622), 1127-9
Journal of Materials Chemistry (2010), 20 (16)
Microporous and Mesoporous Materials (2004), 73 (1-2), p.81-88
Chemistry of Materials (2016), 28 (8), 2573-2580
Science (2003), 300 (5622), 1127-9
Journal of Materials Chemistry (2010), 20 (16)
Microporous and Mesoporous Materials (2004), 73 (1-2), p.81-88
Chemistry of Materials (2016), 28 (8), 2573-2580
Online since: October 2011
Authors: Cheng Jie Ye, Zao Liang Gao
Design the test model
Since the prototype winding steel with 200mm × 100mm × 6mm × 8mm welded I-beam,
Calculated by similar relation, the design span is 2.5m × 3.0m, Section selection materials according to strict calculated.
Unit selection and parameters The winding steel beam use BEAM188 unit, pole use LINK8 unit, cable unit LINK10, defined units as SI, the material density 7.85 × 10-6 N/mm3, Poisson's ratio of 0.3, the acceleration of gravity 9.8m/s2 .
Between the numerical analysis and experimental study there are some errors, that show the model size effect and the winding test materials are directly related, structural stiffness, caused by higher fundamental frequency.
Acknowledgements This work was financially supported by the Heilongjiang Education Science and Technology Research Project Foundation (12513085).
Journal of GanSu Sciences.
Unit selection and parameters The winding steel beam use BEAM188 unit, pole use LINK8 unit, cable unit LINK10, defined units as SI, the material density 7.85 × 10-6 N/mm3, Poisson's ratio of 0.3, the acceleration of gravity 9.8m/s2 .
Between the numerical analysis and experimental study there are some errors, that show the model size effect and the winding test materials are directly related, structural stiffness, caused by higher fundamental frequency.
Acknowledgements This work was financially supported by the Heilongjiang Education Science and Technology Research Project Foundation (12513085).
Journal of GanSu Sciences.
Online since: May 2019
Authors: Blessie A. Basilia, Marvin S. Tolentino, Ruth R. Aquino, Arra M. Calingasan, Minerhiza N. Dela Cruz, Diana Jean C. Ramolete
Basilia1,2f
1Mapúa University, School of Chemical, Biological, and Materials Engineering and Sciences, 658 Muralla St., Intramuros Manila, 1002 Philippines
2Industrial Technology Development Institute, Department of Science and Technology, Bicutan, Taguig City, Metro Manila, 1631 Philippines
arraquino@mapua.edu.ph, bmarvstolentino@yahoo.com, fbabasilia@mapua.edu.ph
Keywords: cellulose acetate, sodium montmorillonite, hard water softening, electrospinning.
This study would be beneficial in addressing environmental impacts of hard water for it could be the source of new material for the hard water purification.
The raw materials used in the conduct of this experiment are commercial cellulose acetate (CA) from Belman Laboratories and sodium montmorillonite (Na+-MMT) from the Department of Science and Technology.
Analysis of the FTIR spectrum for the electrospun CA/Na+-MMT blend nanostructured membranes confirms the presence of both materials in the blends.
Journal of Environmental Management, 105, 83-89 [3] Seo, S., et al., (2009).Investigation on removal of hardness ions by capacitive deionization (CDI) for water softening applications.Water Research, 44, 2267 – 2275 [4] Gabrielli, C., et al., (2006).
This study would be beneficial in addressing environmental impacts of hard water for it could be the source of new material for the hard water purification.
The raw materials used in the conduct of this experiment are commercial cellulose acetate (CA) from Belman Laboratories and sodium montmorillonite (Na+-MMT) from the Department of Science and Technology.
Analysis of the FTIR spectrum for the electrospun CA/Na+-MMT blend nanostructured membranes confirms the presence of both materials in the blends.
Journal of Environmental Management, 105, 83-89 [3] Seo, S., et al., (2009).Investigation on removal of hardness ions by capacitive deionization (CDI) for water softening applications.Water Research, 44, 2267 – 2275 [4] Gabrielli, C., et al., (2006).
Online since: January 2017
Authors: Takeji Arai
The shape of the heat-spot on the material has been treated as constant for a long time, regardless of the speed of the material to be processed.
In fact, on the surface of the material the light and the material mutually act on each other, so the shape of the heat-spot which appears on the surface many vary depending on the processing speed.
Material: SPHC Hot-rolled plate metal with black scale Material: ZAM Highly corrosion-resistant hot-dip coated steel.
Therefore no additional oxidation combustion reaction caused by heated active gas was reflected in calculations. 3.2 Theoretical analysis of high-speed metal foil cutting As the thickness of the foil was very thin and heat-spot was extremely small, the calculation model that a small heat-spot moved on the materials was used for metal foil cutting.
Journal of Manufacturing Science and Engineering Vol.118/225 May (1996) [5] M.J.Kim and P.Majumdar:”Computational Model for High-Energy Laser-Cutting processes” Numerical Heat Transfer, Part A, 27:717-733, (1995) [6] H.S.Calslaw &J.C.
In fact, on the surface of the material the light and the material mutually act on each other, so the shape of the heat-spot which appears on the surface many vary depending on the processing speed.
Material: SPHC Hot-rolled plate metal with black scale Material: ZAM Highly corrosion-resistant hot-dip coated steel.
Therefore no additional oxidation combustion reaction caused by heated active gas was reflected in calculations. 3.2 Theoretical analysis of high-speed metal foil cutting As the thickness of the foil was very thin and heat-spot was extremely small, the calculation model that a small heat-spot moved on the materials was used for metal foil cutting.
Journal of Manufacturing Science and Engineering Vol.118/225 May (1996) [5] M.J.Kim and P.Majumdar:”Computational Model for High-Energy Laser-Cutting processes” Numerical Heat Transfer, Part A, 27:717-733, (1995) [6] H.S.Calslaw &J.C.
Online since: January 2025
Authors: Adolphe Moukengue Imano, Montcho Arnaud Sèminvo, Hassane Ousseyni Ibrahim, Arouna Oloulade, Agbomahena Marcaire, Agbokpanzo Richard Gilles, Vianou Antoine
Maradi, Niger
3Laboratory of Electrical Engineering, Electronics, Automation and Telecommunications, University of Douala, Douala, Cameroon
4Laboratory of Thermophysic Characterization of Materials and Energy Mastering, University of Abomey-Calavi, Abomey-Calavi, Benin
aolouarou@yahoo.fr, brichgille@gmail.com, chassane2025@yahoo.fr, dagbomac@yahoo.fr, emoukangueimano@gmail.com, fmontchoarnaud1604@gmail.com, gavianou@yahoo.fr
Keywords: Optimization, Reliability, Availability, Genetic Algorithm, NSGA-II, Distribution Network
Abstract.
A study conducted by Tempa Dorji at the Norwegian University of Science and Technology showed that 90% of service interruptions are due to failure of distribution systems [1].
The searches for faults are carried out heuristically with several tests which sometimes create material damage to customers.
Ethical Approval (not applicable) Availability of Data and Materials The simulations were carried out with Matlab R2021a.
BÉRENGUER, Inspection and maintenance planning: an application of semi-Markov decision processes, Journal of intelligent Manufacturing, pp. 467-476, 1997
A study conducted by Tempa Dorji at the Norwegian University of Science and Technology showed that 90% of service interruptions are due to failure of distribution systems [1].
The searches for faults are carried out heuristically with several tests which sometimes create material damage to customers.
Ethical Approval (not applicable) Availability of Data and Materials The simulations were carried out with Matlab R2021a.
BÉRENGUER, Inspection and maintenance planning: an application of semi-Markov decision processes, Journal of intelligent Manufacturing, pp. 467-476, 1997
Online since: October 2011
Authors: Xian Ju Zhou, Tong Hui Zhou, Ying Mao Li, Qiao Chun Feng
Since are earth materials are exiguous and precious, it is desirable to reduce the demand of them.
Starting materials MoO3(99.5%), WO3(99.0%), Li2CO3(98.0%), Y2O3(99.999%),Eu2O3(99.999%) were weighted carefully according to a certain stoichiometric ratio and grounded to mix these materials well.
The doping concentration of activator affects the optical properties of luminescent materials greatly.
Trottier, IEEE Journal of Selected Topics in Quantum Electronics, 8 (2002) 339-345
[5] Chung-Lun Lo, Jeng-Gong Duh, Bi-Shiou Chiou, Chao-Chi Peng, Lyuji Ozawa, Materials Chemistry and Physcis, 71 (2001) 179-189
Starting materials MoO3(99.5%), WO3(99.0%), Li2CO3(98.0%), Y2O3(99.999%),Eu2O3(99.999%) were weighted carefully according to a certain stoichiometric ratio and grounded to mix these materials well.
The doping concentration of activator affects the optical properties of luminescent materials greatly.
Trottier, IEEE Journal of Selected Topics in Quantum Electronics, 8 (2002) 339-345
[5] Chung-Lun Lo, Jeng-Gong Duh, Bi-Shiou Chiou, Chao-Chi Peng, Lyuji Ozawa, Materials Chemistry and Physcis, 71 (2001) 179-189
Online since: January 2019
Authors: Gui Sheng Gan, Da Quan Xia, Xin Liu, Cong Liu, Han Lin Cheng, Zhong Zhen Ming, Hao Yang Gao, Bin Yang
The globular grain continued to increase during the settling process.
1 Introduction
SSM (Semi-Solid Metal) developing at MIT during the 1970s was considered as one of the most prospective materials processing technologies in 21 century [1].
TiB2 particles can improve the strength and modulus of Al alloy due to high hardness and modulus, and have been widely used in Al alloy as reinforcement and grain refiner, especially in the aeronautical industry as structural materials [2-6]. 7075 Al alloys have been widely used as structural materials in aeronautical industries due to their attractive comprehensive properties, such as low density, high strength, ductility and toughness, but 7075 Al alloys had a relatively coarse dendrites which made manufacturing with semi-solid slurries difficult.
Acknowledgments This work was supported by the National Natural Science Foundation of China (Grant No. 51505051).
[8] G.S.Gan, B.Yang, B.Zhang, JX.iang, Y.L.Shi, Y.P.Wu, Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles, Materials. 10(2017)132
Liu, The Relationship Between Viscosity and Refinement Efficiency of Pure Aluminum by AI-Ti-B Refiner, Journal of Alloys and Compounds, J Alloy Compd. 425 (2006)245-250
TiB2 particles can improve the strength and modulus of Al alloy due to high hardness and modulus, and have been widely used in Al alloy as reinforcement and grain refiner, especially in the aeronautical industry as structural materials [2-6]. 7075 Al alloys have been widely used as structural materials in aeronautical industries due to their attractive comprehensive properties, such as low density, high strength, ductility and toughness, but 7075 Al alloys had a relatively coarse dendrites which made manufacturing with semi-solid slurries difficult.
Acknowledgments This work was supported by the National Natural Science Foundation of China (Grant No. 51505051).
[8] G.S.Gan, B.Yang, B.Zhang, JX.iang, Y.L.Shi, Y.P.Wu, Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles, Materials. 10(2017)132
Liu, The Relationship Between Viscosity and Refinement Efficiency of Pure Aluminum by AI-Ti-B Refiner, Journal of Alloys and Compounds, J Alloy Compd. 425 (2006)245-250
Online since: September 2016
Authors: Larisa R. Ivanova, Sergey Panin, Ludmila Kornienko, Vladislav O. Alexenko
Ivanova1,d
1 Institute of Strength Physics and Materials Sciences SB RAS, 34021, Tomsk, Russia
2 National Research Tomsk Polytechnic University, 634050, Tomsk, Russia
asvp@ispms.tsc.ru, brosmc@ispms.tsc.ru, cvl.aleksenko@mail.ru, dlir1952@mail.ru
Keywords: ultra-high molecular weight polyethylene, filler, graphite, molybdenum disulfide, polytetrafluoroethylene, wear resistance, permolecular structure.
The use of composite materials with UHMWPE matrix ensures multiple increasing of wear resistance of metal-polymer friction units.
Under development of UHMWPE composite materials designers usually are guided towards the preferential conditions of their operation: abrasion, dry sliding friction, friction in the boundary lubrication, etc.
Wear resistance of materials under dry friction was measured by "block-on-ring" scheme under the load of 68.8 N and rotation speed of 100 rev/min (according to ASTM G99) with the use of SMT-1 wear testing machine (sliding rate was 0.32 m/sec).
Ultra high molecular weight polyethylene (UHMWPE), Engineered Materials Handbook, vol. 2: Engineering Plastics, 1999
The use of composite materials with UHMWPE matrix ensures multiple increasing of wear resistance of metal-polymer friction units.
Under development of UHMWPE composite materials designers usually are guided towards the preferential conditions of their operation: abrasion, dry sliding friction, friction in the boundary lubrication, etc.
Wear resistance of materials under dry friction was measured by "block-on-ring" scheme under the load of 68.8 N and rotation speed of 100 rev/min (according to ASTM G99) with the use of SMT-1 wear testing machine (sliding rate was 0.32 m/sec).
Ultra high molecular weight polyethylene (UHMWPE), Engineered Materials Handbook, vol. 2: Engineering Plastics, 1999
Online since: February 2011
Authors: Sun Yi Chen
The relation between the material physical property of the shell and its temperature has been considered.
The difference of thermal conductivity coefficient between weld and basis material would not be reckoned.
Chinese Journal of Mechanical Engineering (English Edition). 20(6) :13-17 (2007) [6] Chen Sunyi.
China, Shanghai: East China University of Science and Technology Press 215-220 (2005) [8] HUANG Qi.
Institute of information of science and Technology of Department of Petroleum Industry, 80 (1984) [17] N.A.Weil etc., Experiments to Operate the Delay Coke Drum.
The difference of thermal conductivity coefficient between weld and basis material would not be reckoned.
Chinese Journal of Mechanical Engineering (English Edition). 20(6) :13-17 (2007) [6] Chen Sunyi.
China, Shanghai: East China University of Science and Technology Press 215-220 (2005) [8] HUANG Qi.
Institute of information of science and Technology of Department of Petroleum Industry, 80 (1984) [17] N.A.Weil etc., Experiments to Operate the Delay Coke Drum.
Online since: July 2012
Authors: Peng Liu, Xi Juan Fang, Yu Zhan, Cai Qin Gu, Qing Zhu Zeng, Lu Xin Chen, Qing Ling Xu
The low processing availability and the more waste materials [2] lead to being difficult to ensure the sustainable development of the processing enterprises for the low return.
Materials and methods Materials.
Yan, et al: Food Science, Vol.10(2010),p. 75.
Hara: Journal of Nutrition, Vol.1(1984),p. 114-1122
Zeng, et al: Modern Food Science and Technology, Vol.2(2008),p. 115.
Materials and methods Materials.
Yan, et al: Food Science, Vol.10(2010),p. 75.
Hara: Journal of Nutrition, Vol.1(1984),p. 114-1122
Zeng, et al: Modern Food Science and Technology, Vol.2(2008),p. 115.