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Online since: January 2006
Authors: Gai Fei Peng, Sammy Yin Nin Chan, Qi Ming Song, Quan Xin Yi
Lea: The effect of temperature on some of the properties of materials, Engineering, 1920, 110, pp. 293-298
Hannant: Effects of heat on concrete strength, Engineering, Vol.197, No.21, 1964, pp. 302
Monteiro and N.G.W Cook: A new method for studying stress-induced microcracks in concrete, Journal of Materials in Civil Engineering. 10 (1998), pp. 128-134
Nassif: Fire and Materials, Vol. 26 (2002), pp. 103-109
YI: Key Engineering Materials (the same issue as this paper, 2005).
Online since: August 2005
Authors: D.M. Babic, Andrew Torrance, D.B. Murray
Babic, A.A.Torrance and D.B.Murray Department of Mechanical and Manufacturing Engineering Trinity College Dublin, Ireland Keywords: Grinding, cooling, air jets, water mist, soap.
Results and discussion The tests were performed using AISI 1020 mild steel as the workpiece material.
The results obtained for several key grinding parameters will be now presented.
Schmid: Manufacturing processes for engineering materials, Prentice Hall, New Jersey, (2003)
Online since: July 2011
Authors: De Kui Xu, Fei Gao
Study on Layered Fracturing String for Deep Compact Gas Reservoirs Dekui Xu1, 2, a, Fei Gao2, b 1 College of Petroleum Engineering, Northeast Petroleum University, Daqing, 163318, China 2 Production Engineering Research Institute, Daqing Oilfield Company Ltd, Daqing, 163453, China axudekui@sohu.com, bgaofei@petrochina.com.cn Keywords: Compact Gas Reservoirs, Machining, Layered Fracturing, Packer.
The key of this method is to build the pipelines for delivering the fracturing liquid to tow layers with different functions by using packers and matching tools in the wellbore.
Because of wellbore volume restriction, to improve erosion-resisting capacity of tools, the high-strength material should be not only used, but the rational design of strings and tools should be also done to decrease the erosion and to improve the safety and reliability of the strings.
The temperature has no influence on packer material.
Considering the factors that cause half-way setting, this paper selects more suitable structure and material, thereby improving the reliability of the packer and avoiding half-way setting.
Online since: February 2013
Authors: Pavol Tanuska, Pavel Važan, Dominika Jurovatá, Michal Kebisek
Analysis of Production Process Parameters by Using Data Mining Methods Pavel Vazan1, a, Pavol Tanuska1, b, Dominika Jurovata1, c, Michal Kebisek1, d 1 Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Hajdóczyho 1, Trnava 917 24, Slovak Republic a pavol.vazan@stuba.sk, b pavol.tanuska@stuba.sk, c dominika.jurovata@stuba.sk, d michal.kebisek@stuba.sk Keywords: Data Mining, Knowledge Discovery in Databases, Simulation, Production System.
The process based on the standard methodology CRISP-DM consists of the following key steps: - Define the objectives of data mining, focusing on improving the manufacturing process, - Data preparation: extraction of data sets from the data warehouse with respect to defined objectives, grouping and cleaning of data with respect to the chosen method of data mining, - Data Mining: creating a model and application of data mining methods on the transformed data set, - Evaluation of the results: an analysis with respect to the objectives, - Definition of knowledge: the obtained results are formulated in the knowledge production process and its control and planning, - According to the knowledge, the initial control strategy can be modified.
Material flow of production process Gained Knowledge Based on the resulting reports from each data-mining methods and techniques, we proceeded to the evaluation.
International Journal of Engineering 2012/1 ISNN 1584-2665, (2012) [2] J.
Applications of neural network in regression analysis, Computers & Industrial Engineering, Volume 23, Issues 1–4, pages 93-95, ISSN 0360-8352, [online] Available on the Internet:http://www.sciencedirect.com/ science/article/pii/ 036083529290071Q, [cited: 2012-06-12; 15:00 CET] (1992).
Online since: August 2013
Authors: Cheng Xiu Li, Ren Ju Cheng, Hui Hua Luo
Study on Collector for Reverse Flotation of Certain Phosphorite in Guizhou Chengxiu Li 1,2,a, Cheng Renju2,b, Luo Huihua3,c 1Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China 2Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu, Sichuan, 610041, China 3School of Environmental and Civil Engineering, Wuhan Institute of Technology, Wuhan, 430074, China aemail: lchx_gjkc@sina.com, bemail: chengrenju0325@126.com,c email: luohuihua1029@sina.com Keywords: Cellophanite; Vegetable oil fatty acid; Flotation performance Abstract.On the basis of the contrastive research into the flotation performance of several vegetable oil fatty acids, the rapeseed oil fatty acid with better performance was screened out from many fatty acids, and its linolenic acid C18:3content is15.81%, then through modifying and compounding, new magnesium removal collector EM-LS-01was obtained.
The compound collectors, which were prepared by using rapeseed oil, cotton oil and corn oil fatty acid as raw materials, have superior reverse flotation effect relatively, with which the grade of phosphate concentrate can be over 30%, among which the compound effect of rapeseed oil is the best, because under the same conditions, rapeseed oil fatty acid has the highest magnesium removal rate, the recovery rate of phosphate concentrate obtained by using it is 5% higher than that by using other three kinds of fatty acids, so it has the highest efficiency of concentrate.
But the content of harmful component, sesquioxide R2O3, in phosphate concentrate is significantly higher, even higher than that in the raw ore, the key reason is because the sesquioxide is hosted in silicate minerals, which is unable to be removed with single reverse flotation, therefore the sesquioxide enriched in phosphate concentrate.
Being as the material of reverse flotation collector of phosphate mineral, the higher content of linoleic acid and linolenic acid in fatty acid, the better performance the flotation has. 2.
Online since: March 2014
Authors: Yang Lin, Ting Ya Zhou, Xin Wang, Xiao Yi Yang
Component Characteristics of Coal-based Jet Fuel and Petroleum-based Jet Fuel Yang Lin1,, Tingya Zhou1 , Xin Wang1, Xiaoyi Yang1,a,* 1School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Rd., Haidian District, Beijing, P.
Introduction Coal-based alternative jet fuels refer to the liquid fuels obtained from solid coal, using coal as raw material.
Using the coal as raw material, SASOL from South Africa obtained the semi-synthetic jet fuel (SSJF) and fully synthetic jet fuel (FSJF) via the F-T process.
Acknowledgements This project was supported by Key program of Beijing Municipal Science & Technology Commission (D131100003113003) and the Hi-Tech Research and Development Program (863) of China (2012AA052102).
Journal of Engineering for Gas Turbines and Power, Vol.131(2009), p.131 [6] C.L.
Online since: November 2012
Authors: Yan Bo Wu, Ying Chun Yan, Ting Lou, Tie Ben Song
The Preparation of PAN Composite TiO2 Nano-ACF and the Conditions Study Yanbo Wu1*, Yingchun Yan1, Ting Lou1, Tieben Song1 1College of Environmental and Chemical Engineering, Dalian Jiaotong University Dalian, 116028, China *Email Address:wuyanbo_djd@126.com Keywords: Electrostatic Spinning, Nano-fibers, Pre-oxidation, Titanium dioxide.
Introduction The carbon nano-fibers is a recently developed high-tech material which has low density, high specific strength, large surface area, high long neck ratio, better thermal stability and other characteristics.
Cyclization and dehydrogenation reaction form a ring structure, which is a heat-stable ladder structure, it is a key pre-oxidation process22-24.
Sampaolesi, Neuenschwander P.Elecirospun degradable polyester urethane membranes, Potential scaffolds for skeletal muscle tissue engineering.
Sun, The effects of pre-oxidation time and temperature on pre-oxidized polyacrylonitrile fibers, New Chemical Material. 12, 61 (2009)
Online since: April 2016
Authors: Jan L. Vítek, David Čítek, Pavel Jursík, Jiří Kolisko, Robert Coufal
Rohanské nábřeží 68, 180 00 Prague 8, Czech Republic 4Faculty of Civil Engineering, CTU in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic avitek@metrostav.cz, bdavid.citek@cvut.cz, ckolisko@cvut.cz, drobert.coufal@tbg-beton.cz, epavel.jursik@gmail.com Keywords: UHPC, shear connection, composite steel concrete beams, perforated steel sheet, bond.
The joints which might become weak points may be produced using an UHPC, so that the amount of the material is low, the costs are not influenced significantly, the hardening of UHPC is fast, the assembly may be fast and the stresses are transferred reliably since the quality of UHPC is high.
Experimental verification of bond of reinforcing steel and concrete UHPC is relatively new material a lot of experimental research and verification of material parameters need to be done [1].
Bond is one of the key parameters for design of concrete structures.
Fibre Concrete 2013 - Technology, Design, Application, Prague: Faculty of Civil Engineering, Czech Technical University in Prague, 2013, p. 407-414.
Online since: May 2013
Authors: Xiao Liang Jia, Hai Dong Meng, Yu Chen Song
Combination Clustering Evaluation Research on Different Data Distribution Patterns Yu-Chen Songa, Xiao-Liang Jiab, Hai-Dong Meng Center for Inner Mongolia Industry Informationization and Innovation Department of Mining Information System, Laboratory for Data Engineering Inner Mongolia University of Science and Technology, Inner Mongolia, Baotou, 014010, China a songyuchen@imust.edu.cn, b wwyhc5960@163.com Keywords: Clustering, Data Distribution, Combination Evaluation, Visualization Technology Abstract.
Because kinds of clustering analysis methods and evaluation methods have different analysis principles, facing complex and ever-changing original data distribution patterns in practical applications, how to better use reasonable clustering analysis methods for achieving useful clustering results, how to use applicable evaluation methods for achieving a more effectively recognition on better clustering results of different data distribution patterns, these issues above have become one of key problems in need of solution for realizing application value of clustering technology.
Because image data mainly reflect the spatial information of material objects, roughly classified into two categories, regular distribution pattern and irregular distribution pattern, be shown in Fig. 2.
[7] Yu-Chen Song, Xiao-Liang Jia, Hai-Dong Meng, Influence analysis of linear data distribution on different clustering results, Advanced Materials Research (2012)3144-3152, in press
[11] Yu-Chen Song, Yi-Feng Fang, Application research of association analysis with Clementine, Proc. of 2nd International Conference on Software Engineering and Data Mining 2(2010)445–449, in press
Online since: July 2007
Authors: K.C. Chan, Q. Chen, L. Liu
Liu 2 c 1 Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China 2 The State Key Lab of Die & Mould Technology, Huazhong University of Science and Technology, 430074 Wuhan, China a mfkcchan@polyu.edu.hk, bgemcq@sohu.com, clliu2000@public.wh.hb.cn Keywords: bulk metallic glass composite, supercooled liquid region, plastic deformation mechanisms Abstract.
Introduction The interest in bulk metallic glasses (BMGs) has been increasing over the past decades due to their importance in both fundamental science and engineering applications [1-2].
Results The material exhibited homogenous deformation behavior in all cases with compressive strains ranging from 0.5 to 0.8 depending on the strain rate used.
Spaepen: Mater Sci Eng A -Structural Materials Properties Microstructure and Processing, Vol.179 (1994), p. 81.
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