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Online since: March 2015
Authors: Faraj El Dabee, Romeo Marian, Yousef Amer
Also, the raw materials and components are supplied instantaneously to the production system to meet JIT requirements.
The following notations are used in the proposed model: CT: Total cost required to produce one product in monetary unit (MU); Cpt: Final product cost excluding the risk cost in monetary unit (MU); CO: Ordering cost of raw materials (MU); CH: Holding cost of raw materials within the production system stores (MU); CR: Risk cost arising from the disruption occurrence (MU); Ctr: Transportation cost for delivering raw materials to the production system (MU); CP: Purchasing cost of raw materials required to produce the product (MU); CU: Utilities cost of the final product (MU); CD: Duties cost arising from procuring raw materials from an external supplier (MU); TPi: Transfer price required for procuring raw material i from an external supplier i (MU); and CW: Worker cost required for producing the final product (MU); The purpose of this model is to optimise the total costs (CT), including CO, CH, CP, Ctr, CD, TP, CW, CU, and CR using the GA technique
X1 presents the number of external suppliers (SEj) used for supplying raw materials to the production system, which are 11 suppliers (genes) with 2 levels.
It is assumed that a production system purchases raw materials in a fixed lot size from eleven different regular external suppliers.
Garg, Evolutionary Computation Algorithms for Cryptanalysis: A Study, International Journal of Computer Science and Information Security, 7 (2010)
The following notations are used in the proposed model: CT: Total cost required to produce one product in monetary unit (MU); Cpt: Final product cost excluding the risk cost in monetary unit (MU); CO: Ordering cost of raw materials (MU); CH: Holding cost of raw materials within the production system stores (MU); CR: Risk cost arising from the disruption occurrence (MU); Ctr: Transportation cost for delivering raw materials to the production system (MU); CP: Purchasing cost of raw materials required to produce the product (MU); CU: Utilities cost of the final product (MU); CD: Duties cost arising from procuring raw materials from an external supplier (MU); TPi: Transfer price required for procuring raw material i from an external supplier i (MU); and CW: Worker cost required for producing the final product (MU); The purpose of this model is to optimise the total costs (CT), including CO, CH, CP, Ctr, CD, TP, CW, CU, and CR using the GA technique
X1 presents the number of external suppliers (SEj) used for supplying raw materials to the production system, which are 11 suppliers (genes) with 2 levels.
It is assumed that a production system purchases raw materials in a fixed lot size from eleven different regular external suppliers.
Garg, Evolutionary Computation Algorithms for Cryptanalysis: A Study, International Journal of Computer Science and Information Security, 7 (2010)
Online since: April 2010
Authors: Štefan Kavecký, Pavol Štefánik, Tomáš Dvorák
Thermal Expansion of Advanced Materials for High Temperature Fusion
Application
Tomáš Dvorák a, Štefan Kavecký b, Pavol Štefánik
c
Institute of materials and machine mechanics, Račianska 75, 831 02 Bratislava,
Slovak Academy of Sciences
a
tomas.dvorak@savba.sk, b stefan.kavecky@savba.sk,
c pavol.stefanik@savba.sk
Keywords: metal matrix composite, gas pressure infiltration, diffusion bonding, coefficient
of thermal expansion
Abstract.
Heat sink materials, which are planned to be used for production of fusion reactors, are expected to withstand high temperature changes as well as high heat fluxes at elevated temperatures.
From a structural point of view, the crucial properties of these materials are high structural stability at elevated temperatures and thermo-cycling resistance [2].
Tungsten (W) and copper (Cu) are materials suitable for production of metal matrix composites (MMC) that can be used in specific high temperature applications [3].
Nemoto. et al.: Journal Nucl.
Heat sink materials, which are planned to be used for production of fusion reactors, are expected to withstand high temperature changes as well as high heat fluxes at elevated temperatures.
From a structural point of view, the crucial properties of these materials are high structural stability at elevated temperatures and thermo-cycling resistance [2].
Tungsten (W) and copper (Cu) are materials suitable for production of metal matrix composites (MMC) that can be used in specific high temperature applications [3].
Nemoto. et al.: Journal Nucl.
Online since: October 2011
Authors: Qiao Zhuo Gao, Yong Gang Yang, Fu Ping Liu
Experimental Materials and Instruments
Sulphuric acid, Sodium bentonite, sodium polyacrylate (PAAS), Polyvinyl alcohol (PVA), Preparing Poly-dimethyldiallylammonium Chloride (PDMDAAC), defoamer
Scanning electron microscope (SEM), Wire bar coater, Photograph glazer, Color ink-jet printer, Spectrodensitometer,
Experimental Methods
The modification of bentonite with acid
The sodium bentonite was added to a flask containing certain concentration sulfuric acid solution, and then it was heated with water bath and mixed for a moment until the temperature reached 90℃ .The pH value of mixture solution was control 4~5 after the reactions.
Finally the mixture substances were dried, ground and sifted, and the last material was the modification of bentonite with acid.
(In Chinese) [3] Zhijing Chen, yuchuan zhang, Yu Zeng: Journal of Beijing University of Chemical Technology (Natural Science Edition), 2007, 34(3):283-286.
[7] Wedin P,Svanholm E,Alberius P,et al: Journal of Pulp and Paper Science, 2006, 32( 1): 32
[8] James E, Margaret J,Dan F: Journal of Coatings Technology, 2003, 75(3) : 75.
Finally the mixture substances were dried, ground and sifted, and the last material was the modification of bentonite with acid.
(In Chinese) [3] Zhijing Chen, yuchuan zhang, Yu Zeng: Journal of Beijing University of Chemical Technology (Natural Science Edition), 2007, 34(3):283-286.
[7] Wedin P,Svanholm E,Alberius P,et al: Journal of Pulp and Paper Science, 2006, 32( 1): 32
[8] James E, Margaret J,Dan F: Journal of Coatings Technology, 2003, 75(3) : 75.
Online since: August 2013
Authors: Jun Hong Bai, Jun Jing Wang, Xiao Fei Ye, Qiong Qiong Lu, Qing Qing Zhao
Materials and methods
Three soil sampling sites were chosen for each kind of plant community (Tamarix chinnensis, Phragmites australis and Suaeda salsa) in the Yellow River Delta in August of 2007.
Journal of Plant Nutrition and Soil Science, 175(5): 721-728
Journal of Hydrology, 450-451: 244-253 [11] J.
Soil Science, 63: 251-263
Chinese Journal of Soil Science, 25(6): 259-260
Journal of Plant Nutrition and Soil Science, 175(5): 721-728
Journal of Hydrology, 450-451: 244-253 [11] J.
Soil Science, 63: 251-263
Chinese Journal of Soil Science, 25(6): 259-260
Online since: February 2014
Authors: Salaheddine Harzallah, Mohamed Chabaat
., Civil Engineering Faculty, University of Sciences and Technology Houari Boumediene, B.P 32 El Alia Bab Ezzouar, Algiers 16111 Algeria.
In this paper, a nondestructive technique is used as a tool to control cracks and microcracks in materials.
A simulation by a numerical approach such as the finite element method is employed to detect cracks in materials and eventually to study their propagation using a crucial parameter such as the stress intensity factor.
The nondestructive testing of materials became a tool impossible to circumvent for the improvement of quality (during the development) and of safety (at the time of the uniform), it relates to fields very diverse [3].
Seddiki; Stress Analysis during Crack-Crazing Patterns Interactions: A Mathematical Approach, International Journal of Key Engineering Materials, Vol. 345-346, pp. 1617-1620, 2007.
In this paper, a nondestructive technique is used as a tool to control cracks and microcracks in materials.
A simulation by a numerical approach such as the finite element method is employed to detect cracks in materials and eventually to study their propagation using a crucial parameter such as the stress intensity factor.
The nondestructive testing of materials became a tool impossible to circumvent for the improvement of quality (during the development) and of safety (at the time of the uniform), it relates to fields very diverse [3].
Seddiki; Stress Analysis during Crack-Crazing Patterns Interactions: A Mathematical Approach, International Journal of Key Engineering Materials, Vol. 345-346, pp. 1617-1620, 2007.
Online since: February 2014
Authors: Yu Du, Gui Jun Shen, Hong Ying Pei
Journal of Chromatography B. 900(2012) 18-23
Preparation of hollow porous molecularly imprinted polymers and their applications to solid-phase extraction of trainees in soil samples[J].Journal of Materials Chemistry. 21(2011) 12047-12053
Chinese Journal of Pesticide Science.3, 14(2012)
Journal of Tea Science.3, 29(2009) 231-235
Journal of Chinese Peoples Public Security University (Science and Technology). 3(2010) 11-15
Preparation of hollow porous molecularly imprinted polymers and their applications to solid-phase extraction of trainees in soil samples[J].Journal of Materials Chemistry. 21(2011) 12047-12053
Chinese Journal of Pesticide Science.3, 14(2012)
Journal of Tea Science.3, 29(2009) 231-235
Journal of Chinese Peoples Public Security University (Science and Technology). 3(2010) 11-15
Online since: February 2013
Authors: Hong Xin Zhang, Ying Liu, Kai Yin
The optimization variables are chosen,
X=[x9 x10 x11 x12 x13]T
where, X2- the variable matrix of crankshaft, x9- the radius of the connecting rod journal, m, x10- the length of the connecting rod journal, m, x11- the radius of the main bearing journal, m, x12- the fillet radium between main bearing journal and crank arm, m, x13- the fillet radium between the connecting rod journal and crank arm, m.
Acknowledgements Financial support of this research by the National Natural Science Foundation of China (No.50975146/50875134) and Natural Science Foundation of Shandong Province of China(No.ZR2010EM068) is gratefully acknowledged.
Chinese Journal of Mechanical Engineering, 2006, 17(5): 292-295
Load Analysis of Crankshaft of Axial Three-cylinder Hydraulic Confined Piston Engine[J].Applied Mechanics and Materials Vols.34-35(2010)pp1692-1696
The Proceedings of the China Association for Science and Tcchnology,v01.3, No.2, Beijing, 2007: 530-535
Acknowledgements Financial support of this research by the National Natural Science Foundation of China (No.50975146/50875134) and Natural Science Foundation of Shandong Province of China(No.ZR2010EM068) is gratefully acknowledged.
Chinese Journal of Mechanical Engineering, 2006, 17(5): 292-295
Load Analysis of Crankshaft of Axial Three-cylinder Hydraulic Confined Piston Engine[J].Applied Mechanics and Materials Vols.34-35(2010)pp1692-1696
The Proceedings of the China Association for Science and Tcchnology,v01.3, No.2, Beijing, 2007: 530-535
Online since: July 2011
Authors: Hui Wen Zhou
“Fast” means fast communication of information, fast establishment of headquarters, fast collection of necessary materials and fast rescue operations.
Emergency support of an enterprise includes human resource, materials, equipments, financial resource, information and telecommunication services etc.
Journal of System Science and System Engineering, 2009(4):25-29 [6].
Journal of Safety Science and Technology, Vol.7, 2011(1) :85-88 [8].
Journal of Safety Science and Technology, 2008, 4(5): 13-19 [9].
Emergency support of an enterprise includes human resource, materials, equipments, financial resource, information and telecommunication services etc.
Journal of System Science and System Engineering, 2009(4):25-29 [6].
Journal of Safety Science and Technology, Vol.7, 2011(1) :85-88 [8].
Journal of Safety Science and Technology, 2008, 4(5): 13-19 [9].
Online since: December 2009
Authors: Iman Farahbakhsh, S. Hadi Tabaian, J. Vahdati
Production of nano leaded brass alloy by oxide materials
I.
Vahdati3, c 1 School of Materials Engineering & Metallurgy, Iran University of science & Technology, Tehran, iran 2 Faculty of Materials Engineering & Metallurgy, Amirkabir University, Tehran, Iran 3 Faculty of Materials Engineering & Metallurgy, University Ferdowsi of Mashhad a farahbakhsh@iust.ac.ir, btabaian@aut.ac.ir, cjvahdati@iust.ac.ir Key words: Lead bearing brass, reduction reaction thermodynamic, mechanochemical process, graphite Abstract: Mechanochemical process was applied for brass alloy production using chemical grade oxide powders.
In this study, formation of leaded brass by mechanochemical method is investigated using metal oxides and graphite as starting materials.
Suryanarayana, "Mechanical alloying and milling ", Progress in Materials Science, Vol 46, (2001) [2] M.
El-Eskandarany, "Mechanical Alloying for Fabrication of Advanced Engineering Materials", William Andrew Publishing, (2001)
Vahdati3, c 1 School of Materials Engineering & Metallurgy, Iran University of science & Technology, Tehran, iran 2 Faculty of Materials Engineering & Metallurgy, Amirkabir University, Tehran, Iran 3 Faculty of Materials Engineering & Metallurgy, University Ferdowsi of Mashhad a farahbakhsh@iust.ac.ir, btabaian@aut.ac.ir, cjvahdati@iust.ac.ir Key words: Lead bearing brass, reduction reaction thermodynamic, mechanochemical process, graphite Abstract: Mechanochemical process was applied for brass alloy production using chemical grade oxide powders.
In this study, formation of leaded brass by mechanochemical method is investigated using metal oxides and graphite as starting materials.
Suryanarayana, "Mechanical alloying and milling ", Progress in Materials Science, Vol 46, (2001) [2] M.
El-Eskandarany, "Mechanical Alloying for Fabrication of Advanced Engineering Materials", William Andrew Publishing, (2001)
Online since: March 2013
Authors: Wei Zhang, Chuan Xiong Fu, Shu Lin Liu
The geometry detail is shown in Fig. 3, and material properties in Table 1.
Acknowledgement This research was supported by the National Natural Science Foundation of China (50909021, 51169003), the Major Projects of Guangxi Natural Science Foundation (2012GXNSFEA053002), the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Structural Safety (2012ZDX05).
References [1] Don ZR, Zhao QF and Song CC: Journal of Pressure Vessel Technology, Vol. 112 (1990), p. 57-64
[2] Wei Zhang, Hegao Wu, Kai Su: Journal of Hydroelectric Engineering, Vol. 24(2005), p. 70-74, in Chinese
[3] Wei Zhang, Hegao Wu: Journal of Hydroelectric Engineering, 27(2008), p. 73-78, in Chinese
Acknowledgement This research was supported by the National Natural Science Foundation of China (50909021, 51169003), the Major Projects of Guangxi Natural Science Foundation (2012GXNSFEA053002), the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Structural Safety (2012ZDX05).
References [1] Don ZR, Zhao QF and Song CC: Journal of Pressure Vessel Technology, Vol. 112 (1990), p. 57-64
[2] Wei Zhang, Hegao Wu, Kai Su: Journal of Hydroelectric Engineering, Vol. 24(2005), p. 70-74, in Chinese
[3] Wei Zhang, Hegao Wu: Journal of Hydroelectric Engineering, 27(2008), p. 73-78, in Chinese