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Online since: June 2013
Authors: Jian Li, You Xiao, Yue Luo
How to make full use of these knowledge, summarize and extract these successful experience, establish an effective organization case base, is the key to establish a case-based reasoning drilling fluid formula optimization design system.
In the processes of actual formula design, we generally determine the drilling fluid system first, and then adjust the amount of raw materials and treatment agent to generate different formulas.
Improved similarity function of characteristicof caseand is: (5) The similarity function of caseand is: (6) 3) Combinatorial optimization of the weights a) The determine of initial weights Field engineers and Professors on the field of drilling fluid design possess a comprehensive and in-depth understanding of the field, they know what kind of property or information is important to determine drilling fluid system and formula, what is less important or even can be ignore.
At present, single parent genetic algorithm mainly divided into two aspects: the first is the combinatorial optimization problems; the second is the complex engineering optimization problems with constraints.
The problem in this paper is in line with the complex engineering optimization problems with constraints.
In the processes of actual formula design, we generally determine the drilling fluid system first, and then adjust the amount of raw materials and treatment agent to generate different formulas.
Improved similarity function of characteristicof caseand is: (5) The similarity function of caseand is: (6) 3) Combinatorial optimization of the weights a) The determine of initial weights Field engineers and Professors on the field of drilling fluid design possess a comprehensive and in-depth understanding of the field, they know what kind of property or information is important to determine drilling fluid system and formula, what is less important or even can be ignore.
At present, single parent genetic algorithm mainly divided into two aspects: the first is the combinatorial optimization problems; the second is the complex engineering optimization problems with constraints.
The problem in this paper is in line with the complex engineering optimization problems with constraints.
Online since: August 2013
Authors: Resty Izzaty Borhan, Oh Wei Fhang, Shahryar Sorooshian
Thus, it also plays an important role in managing an efficient chain of supplies whereby it is the function responsible for all aspects of the movement and storage of materials into organisations from suppliers through operations, and out to customers [4].
For example, SHELL has wide network of business across the region, extended supply chain, and it has companies from upstream and downstream which provide engineering [11].
The Institution of Engineers, Malaysia [Online].
[7] Aronovich, Dana, and Tien, M. (2010) Measuring Supply Chain Performance: Guide to Key Performance Indicators for Public Health Managers.
Performance measurement of supply chain management: A balanced scorecard approach, computers and insustrial engineering, Vol 53.
For example, SHELL has wide network of business across the region, extended supply chain, and it has companies from upstream and downstream which provide engineering [11].
The Institution of Engineers, Malaysia [Online].
[7] Aronovich, Dana, and Tien, M. (2010) Measuring Supply Chain Performance: Guide to Key Performance Indicators for Public Health Managers.
Performance measurement of supply chain management: A balanced scorecard approach, computers and insustrial engineering, Vol 53.
Online since: November 2025
Authors: Dmitro Radchuk, Yurii Cheberiachko, Ruslan Khoma, Olena Sharovatova
Materials and Methods
It is proposed to use three coefficients to determine the geometric dimensions of filter boxes:
– the comfort coefficient, which allows for the assessment of the impact of the box's geometric dimensions on breathing resistance.
Chemical Engineering Journal. 135 (1–2) (2008) 49–55. https://doi.org/10.1016/j.cej.2007.03.019 [11] Lücke, T., Fissan, H., The prediction of filtration performance of high efficiency gas filter elements.
Chemical Engineering Science. 51(8) (1996) 1199–1208. https://doi.org/10.1016/0009-2509(95)00366-5 [12] Su, Y-C, Li, C-C., Computational fluid dynamics simulations and tests for improving industrial-grade gas mask canisters.
Materials Science Forum. 1141 (2024) 35–42.
Chemical Engineering Science. 64(8) (2009) 1832–1843. https://doi.org/10.1016/j.ces.2009.01.009 [23] Jeon, R., Ko, K., Kwon, K., Park, M., Seo, I., Oh, M., Lee, C.
Chemical Engineering Journal. 135 (1–2) (2008) 49–55. https://doi.org/10.1016/j.cej.2007.03.019 [11] Lücke, T., Fissan, H., The prediction of filtration performance of high efficiency gas filter elements.
Chemical Engineering Science. 51(8) (1996) 1199–1208. https://doi.org/10.1016/0009-2509(95)00366-5 [12] Su, Y-C, Li, C-C., Computational fluid dynamics simulations and tests for improving industrial-grade gas mask canisters.
Materials Science Forum. 1141 (2024) 35–42.
Chemical Engineering Science. 64(8) (2009) 1832–1843. https://doi.org/10.1016/j.ces.2009.01.009 [23] Jeon, R., Ko, K., Kwon, K., Park, M., Seo, I., Oh, M., Lee, C.
Online since: October 2004
Authors: Zheng Yi Jiang, Wei Hua Sun, Hong Tao Zhu, A. Kiet Tieu
Tieu
b, Zhengyi Jiang
c and Hongtao Zhu
d
Faculty of Engineering, University of Wollongong, Northfield Avenue NSW 2522 Australia.
Experiment Materials.
Beynon: Modelling & Simulation in Materials Science & Engineering.
Zhu: Journal of Materials Processing Technology, Vol. 140 (2003), p76 [6] W.
Lenard: Journal of Materials Processing Technology, Vol. 121 (2002), p60 [12] M.
Experiment Materials.
Beynon: Modelling & Simulation in Materials Science & Engineering.
Zhu: Journal of Materials Processing Technology, Vol. 140 (2003), p76 [6] W.
Lenard: Journal of Materials Processing Technology, Vol. 121 (2002), p60 [12] M.
Online since: July 2017
Authors: Marco Bovo, Claudio Mazzotti, Marianna Forghieri, Loris Vincenzi, Elisa Bassoli
Structural Health Monitoring of a Historical Masonry Bell Tower Using
Operational Modal Analysis
Elisa Bassoli1,a, Marianna Forghieri,1,b, Loris Vincenzi,1,c, Marco Bovo,2,d,
and Claudio Mazzotti,2,e
1University of Modena and Reggio Emilia, Department of Engineering "Enzo Ferrari", Modena, Italy
2University of Bologna, Department of Civil, Chemical, Environmental, and Materials Engineering,
Bologna, Italy
aelisa.bassoli@unimore.it, bmarianna.forghieri@unimore.it, cloris.vincenzi@unimore.it,
dmarco.bovo@unibo.it, eclaudio.mazzotti@unibo.it
Keywords: Structural health monitoring, sensor placement, system identification, model updating.
Tralli, "Damage assessment of fortresses after the 2012 Emilia earthquake (Italy)," Bulletin of Earthquake Engineering, vol. 12, no. 5, pp. 2333-2365, 2014
Vincenzi, "Damage and collapses in industrial precast buildings after the 2012 Emilia earthquake," Engineering Structures, vol. 137, pp. 162 - 180, 2017
Guidobaldi, "Post-earthquake continuous dynamic monitoring of the Gabbia Tower in Mantua, Italy," Construction and Building Materials, vol. 81, pp. 101 - 112, 2015
Andersen, "Modal identification of output-only systems using frequency domain decomposition," Smart Materials and Structures, vol. 10, no. 3, p. 441, 2001
Tralli, "Damage assessment of fortresses after the 2012 Emilia earthquake (Italy)," Bulletin of Earthquake Engineering, vol. 12, no. 5, pp. 2333-2365, 2014
Vincenzi, "Damage and collapses in industrial precast buildings after the 2012 Emilia earthquake," Engineering Structures, vol. 137, pp. 162 - 180, 2017
Guidobaldi, "Post-earthquake continuous dynamic monitoring of the Gabbia Tower in Mantua, Italy," Construction and Building Materials, vol. 81, pp. 101 - 112, 2015
Andersen, "Modal identification of output-only systems using frequency domain decomposition," Smart Materials and Structures, vol. 10, no. 3, p. 441, 2001
Online since: August 2011
Authors: Hiro Ohzeki, Fumihito Arai
., 3-20-20, Kaigan, Minato-ku, Tokyo 108-0022, Japan,
and Nagoya University, Japan
2Department of Mechanical Science & Engineering, Nagoya University, Furo-cho, Chikusa-ku,
Nagoya 464-8601, Japan, and Seoul National University, Korea
ahiroo.ohzeki@kistler.com, barai@mech.nagoya-u.ac.jp
Keywords: drilling, feedback control, cutting force, glass, defect-free machining
Abstract.
Introduction Borosilicate glass is becoming an important material for lab-on-a-chip devices because of properties like its high thermal and chemical resistance, its excellent transparency and its good surface quality.
Many engineers agree that a drilling process with a cutting tool is one of the most effective methods for manufacturing holes in glass plates, since holes are produced with high form accuracy and surface quality in a short machining time.
This is because the fracture-toughness value of glass is low compared to that of other hard and brittle materials such as ceramics and so on [2, 3].
The key points of this work can be summarized as follows: · A machining system which can be operated at a predetermined cutting force by changing the feed rate based on cutting force signals measured by a piezoelectric type of cutting dynamometer was developed.
Introduction Borosilicate glass is becoming an important material for lab-on-a-chip devices because of properties like its high thermal and chemical resistance, its excellent transparency and its good surface quality.
Many engineers agree that a drilling process with a cutting tool is one of the most effective methods for manufacturing holes in glass plates, since holes are produced with high form accuracy and surface quality in a short machining time.
This is because the fracture-toughness value of glass is low compared to that of other hard and brittle materials such as ceramics and so on [2, 3].
The key points of this work can be summarized as follows: · A machining system which can be operated at a predetermined cutting force by changing the feed rate based on cutting force signals measured by a piezoelectric type of cutting dynamometer was developed.
Online since: June 2012
Authors: Li Jing Zou
Coating material reduces the diffusion and chemical reaction between the props and the work piece, thereby reducing wear and tear, a better solution to the conflict between the tool strength and toughness.
TiCN coating technology trend With the large capacity of power plant steam turbine, steam turbine blade is the key component of the gas steam turbine engine, the most direct part conversing thermal energy into mechanical energy.
At present, only relying on the advanced cooling technology, the development of new high-temperature alloy materials and improvement of turbine blade manufacturing process is difficult to meet the industrial demand in a short period, and therefore strive to improve the pitting corrosion resistance of advanced turbine blade is essential .
Tool Engineering, 2006, 40(1): 20-24 [2] Y Y Gu, J F Lin, C F Ai.
The research progress of TiAlN hard film / coating material.
TiCN coating technology trend With the large capacity of power plant steam turbine, steam turbine blade is the key component of the gas steam turbine engine, the most direct part conversing thermal energy into mechanical energy.
At present, only relying on the advanced cooling technology, the development of new high-temperature alloy materials and improvement of turbine blade manufacturing process is difficult to meet the industrial demand in a short period, and therefore strive to improve the pitting corrosion resistance of advanced turbine blade is essential .
Tool Engineering, 2006, 40(1): 20-24 [2] Y Y Gu, J F Lin, C F Ai.
The research progress of TiAlN hard film / coating material.
Online since: January 2011
Authors: Jian Liang Peng
Design and Development of Warehouse Management System
of Inland River Port
Jianliang Peng
College of Computer Science and Information Engineering, Zhejiang Gongshang University, Hangzhou, China
jlpeng2007@126.com
Keywords: warehouse management system; inland river port; design; personalized
Abstract.
In addition to a large yard storage areas, but also indoor warehouse built nearly 30 million square meters for production and trading of office space, it is the ideal logistics base for storage and processing to the business of steel, building materials (glass, ceramics), timber, chemical raw materials and others.
In order to optimize the business process of CX port Co., Ltd. to enable them to better operation processing and improve efficiency of management, it is necessary to draw the flowchart of the following key business processes.
Shen: Logistics & Material Handling (August 2006), p. 35-38 [7] Y.L.
In addition to a large yard storage areas, but also indoor warehouse built nearly 30 million square meters for production and trading of office space, it is the ideal logistics base for storage and processing to the business of steel, building materials (glass, ceramics), timber, chemical raw materials and others.
In order to optimize the business process of CX port Co., Ltd. to enable them to better operation processing and improve efficiency of management, it is necessary to draw the flowchart of the following key business processes.
Shen: Logistics & Material Handling (August 2006), p. 35-38 [7] Y.L.
Online since: December 2012
Authors: Hai Yue Zhang, Peng Li, Fan Jia, Man Liu, Ying Wei
aE- mail:zhhaiyue@163.com,bE-mail: lpenglpeng@126.com,cE-mail:825426544@qq.com, dE-mail:mantou07051227@126.com, eE-mail:weiying88321@163.com
Key words: Extraction; Structural analysis; Antioxidant activity
Abstract: The five extracts from Allium cepa L. var. agrogatum Don (ACAD) were determined for their total antioxidant activity by T-AOC kit.
However, there have very few amounts of naturally occurring flavonoids in plant material.
Materials and methods Materials The ACAD were purchased from markets in China.
Silica gel column chromatography and AB-8 resin was purchased from Qingdao Ocean Chemical Factory. 2,2-diphenyl-1-picrylhydrazyl (DPPH) were obtained from Sigma of America; Pyrogallols, Vitamin C, butylated hydroxytoluene (BHT) and total antioxidation capacity (T-AOC),which all were purchased from Nanking Jiancheng Biological engineering research in China; Quercetin (HPLC grade) was obtained from Beijing red leaves technology Co., LTD.
However, there have very few amounts of naturally occurring flavonoids in plant material.
Materials and methods Materials The ACAD were purchased from markets in China.
Silica gel column chromatography and AB-8 resin was purchased from Qingdao Ocean Chemical Factory. 2,2-diphenyl-1-picrylhydrazyl (DPPH) were obtained from Sigma of America; Pyrogallols, Vitamin C, butylated hydroxytoluene (BHT) and total antioxidation capacity (T-AOC),which all were purchased from Nanking Jiancheng Biological engineering research in China; Quercetin (HPLC grade) was obtained from Beijing red leaves technology Co., LTD.
Online since: October 2016
Authors: Bradley P. Wynne, Rene Cerda-Rojas, Rafael D. Mercado-Solis, Edgar Ivan Saldana-Garza
Wynne1,b, Rene Cerda-Rojas2,c
and Rafael David Mercado-Solis3,d
1Department of Materials Science and Engineering, The University of Sheffield, Sir Robert Hadfield Building, Mappin St, Sheffield S1 3JD, UK
2FRISA, Valentín G.
A key manufacturing step that can have a significant influence on property variability is cooling rate variation with the component during quenching.
Typical specification requirements for the selected material are: yield strength ranging from 758 to 896 MPa; minimum ultimate tensile strength of 903 MPa minimum; an average CVN Impact energy of 42 J average with no test less than 28 J.
Kumar, Coupled Analysis of Surface Heat Flux,Microstructure Evolution, and Hardness during Immersion Quenching of a Medium Carbon Steel in Plant Conditions, Materials Performance and Characterization. 1 (2012)
A key manufacturing step that can have a significant influence on property variability is cooling rate variation with the component during quenching.
Typical specification requirements for the selected material are: yield strength ranging from 758 to 896 MPa; minimum ultimate tensile strength of 903 MPa minimum; an average CVN Impact energy of 42 J average with no test less than 28 J.
Kumar, Coupled Analysis of Surface Heat Flux,Microstructure Evolution, and Hardness during Immersion Quenching of a Medium Carbon Steel in Plant Conditions, Materials Performance and Characterization. 1 (2012)