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Online since: July 2006
Authors: Sybrand van der Zwaag, A. Miroux, Zacharias J. Lok
Miroux 2,b and S. van der Zwaag3,c 1 Aluminium Norf GmbH, Koblenzer Strasse 120, 41468 Neuss, Germany 2 Netherlands Institute for Metals Research, Rotterdamseweg 137, 2628 AL Delft, The Netherlands, 3 Faculty Aerospace Engineering, Kluyverweg 1, 2629 HS Delft, The Netherlands a Zacharias.Lok@alunorf.de, ba.miroux@tnw.tudelft.nl, cS.vanderZwaag@lr.tudelft.nl Keywords: precipitation, recrystallization, dispersoids, AA3103, Aluminium manganese alloy Abstract.
During recrystallisation, dispersoids and constituents located in the deformed and in the recrystallised part of the material grow with different rates due to the different values for the Mn diffusivity.
Tchurbakova: Key Eng.
Online since: June 2012
Authors: Jun Deng, Yan Ni Zhang, Wei Feng Wang, Shi Rong Li, Shuang Hou
Experimental Study on Infrared Spectrum Characteristics of Coal in Low Temperature Oxidation Yanni ZHANG1,a, Jun DENG1,b, Weifeng WANG1, Shirong LI1,2, Shuang HOU1 1Key Laboratory of Western Mine Exploitation and Hazard Prevention of Ministry of Education, College of Energy Science & Engineering, Xi’an University of Science and Technology, Xi’an, P.R.China 710054. 2Yangquan Fire Bureau, Yangquan, P.R.China 045000 aemail: zyn2099@xust.edu.cn;bemail:853106030@qq.com Keyword: low temperature oxidation; infrared spectrum characteristics; functional group Abstract: Coal spontaneous combustion is a complex procedure of physical and chemical changing, in which the macro characters is the reflection of micro changes of coal molecule structure in low temperature oxidation.
The relation between the microstructure change and spontaneous combustion properties of coal in the process is discussed. 2 Infrared Spectra (IR) Experiment Principle and Condition 2.1 The Experiment Principle Infrared spectrum is the absorption spectrum caused by vibration energy level transition generated by the bonding atoms in the molecules of material that absorbs the infrared radiation.
The key functional groups which control the coal and oxygen compounding is understood and the coal spontaneous combustion mechanism is reveals. 2.2 Experimental Conditions Coal Samples Preparation.
Online since: June 2011
Authors: Hua Cheng, Zhi Shu Yao, Hai Qing Song
Test study on mechanical characteristic of high strength composite shaft lining of steel and concrete Zhishu Yao a, Haiqing Song b and Hua Cheng c College of Civil Eng. and Architecture, Anhui University of Science and Technology,Huainan 232001, China ayao.zs@163.com ,bhaiqingsong80@163.com , chcheng@aust.edu.cn Key words: steel, concrete, composite shaft lining, mechanical properties, model test Abstract.
At this time, the hoop stress of shaft lining section presents the distribution of large inner edge and small outer edge; when the load is larger, the material is in the plastic stage and the stress of shaft lining section presents redistribution.
References [1] Y.L.Cui: A concise handbook of mine construction engineering (China Coal Industry Press, China 2003) [2] R.L.Zhang,G.L.He and D.
Online since: August 2011
Authors: Bin Li, Xin Feng Zhu, Jian Dong Wang
Acknowledgment This work is supported by the Jiangsu Key Laboratory of Environmental Material and Engineering (K08021), National Natural Science Foundation of China (No.61070133), the Natural Science and Technology Foundation of Jiangsu Province of China (No.BK210311) and the Natural Science Foundation of Jiangsu Province of China (No.
Online since: June 2013
Authors: Yan Mei Chen, Kai Bing Yu, Zhi Hua Chen
Using High Precision Tracer Test to Identify the Concentrated Runoff Channel in Mine Areas with Karst Water ——Example of Fankou Lead-zinc Mine, China Yanmei Chen1, a Zhihua Chen2, b Kaibing Yu3, c 1Graduate School of China University of Geosciences, Wuhan, Hubei, China 2 Environment School of China University of Geosciences, Wuhan, Hubei, China 3Hubei Province Traffic Planning and Design Institute, Wuhan, Hubei, China aymchen831219@126.com, bzhchen@cug.edu.cn, ccug51@163.com Key words: Fankou Lead-zinc Mine; high precision tracer tests; karst water; curtain Abstract.
Study site Fankou mine locating in Shao Guan, Guangdong Province, China, is an important industrial raw material base in China and the largest lead-zinc mine of Asia.
Hydrogeology and Engineering Geology,2003(5)123-127.
Online since: May 2012
Authors: Lin Shen Wang, Yun Yuan, Gang Liu
Analysis on the Approach Route of Overall Planning from the visual angle of “Figure-Ground Relation” Yun Yuan1,a Linshen Wang 1,b and Gang Liu2,c 1School of Civil Engineering and Architecture, University of Jinan, Jinan, Shandong, 250022, China 2 The centre of Jinan urban plan consultation,Jinan, Shandong, 250001, China acea_yuany@ujn.edu.cn, bcea_wangls@ujn.edu.cn,clrumu@126.com Keywords: Approach Route, Figure-Ground Relation, Controlled Thinking Overall , Planning of City and Countryside.
It is verified seemingly what Ray Thomas pointed out in the preface of Tomorrow’s Garden City edited in 1985: “all kinds of comments on Howard are at the expense of key ideas”.
Actually viewing, there are two misunderstandings in pursuit of garden city thought: one is to downsize “garden city”, that is to excessively attach importance to simulation of material space and step on formalized road, which widely exist in so-called perfect residence planning; the other is to make “garden city” poetized, that is to make the concept of garden city placed in the countryside and pursue “free and relaxed, careless and comfortable” life.
Online since: October 2011
Authors: Qian Ting Hu, Guo Qiang Cheng, Wen Bin Wu
Deformation Analysis for Coal and Gas Outburst Cavity Qianting Hu1,2, Wenbin Wu1,2,a and Guoqiang Cheng3 1National Key Laboratory of Gas Disaster Detecting,Preventing and Emergency Controlling, Chongqing,400037,China 2Chongqing Research Institute of China Coal Technology & Engineering Group Corp, Chongqing, 400039, China 3Key Laboratory of Mining Disaster Prevention and Control, Ministry of Education, Shandong University of Science and Technology, Qingdao 266510,China a sdwenbinwu@gmail.com Keywords: Coal and Gas Outburst, Outburst Cavity, Transient Dynamics, Finite Element.
Mohr-Coulomb criterion meets the yield and failure properties of the geotechnical material.
Online since: October 2011
Authors: Peng Kang Jin, Wu Ang Ren, Xiao Chang C. Wang
School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, No 13 Yanta Road, Xi’an 710055, China Key Words Humic acid, online optical monitoring, fluorescence technique, complexation, sweep coagulation Abstract:Using fluorescence and optical monitoring techniques, the process of coagulation of natural humic acids (HA) was studied paying attention to the interaction of aluminium and HA.
Material and Methods Raw water The HS for this study were isolated from lake sediments in Xi’an, China.
Online since: December 2012
Authors: Hong Hui Shi, Wei Chen, Ruo Ling Dong, Xiao Dong Zhang
Numerical Simulation of Hole Shapes Effect on Film Cooling Effectiveness and Aerodynamics Loss over Flat Plate Ruoling Dong1,a, Honghui Shi1,b, Wei Chen1,c and Xiaodong Zhang1,d 1College of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China adongruoling@163.com, bhhshi@zstu.edu.cn, cchenweihz@yeah.net, dzhaoxiaodong.2009 @gmail.com Keywords: Numerical simulation, Shaped holes, Flow field, Film cooling effectiveness, Aerodynamics loss.
It is the melting points of material that obstacles the fuel efficiency maximization in the gas turbine.
Film cooling effectiveness is associated with the characteristics of flow field, while the hole-shape is the key factor for the flow.
Online since: September 2016
Authors: J. Wang, Abduvali Kholikov, Khamdam Akbarov, Bakhtiyor Burikhonov, Nurbik Umirov, Elyor Berdimurodov
Akbarov4,d, B.Burikhonov5,e, N.Umirov6,f 1,2School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P.R.
The selection of these compounds as corrosion inhibitors is based on the consideration that cucurbiturils derivatives (a) can be easily synthesized from cheap, commercially available materials, (b) exhibit high inhibition efficiency even at very low concentrations, (c) are highly soluble in acid test medium, (d) nontoxic and biodegradable corrosion inhibitors for mild steel, and (f) have donor groups such as nitrogen and oxygen, that they have more p-delocalization electrons which improve their chemical and physical adsorption on metals.
Materials and methods 2.1.
Materials 2.1.1.
Acknowledgement Authors gratefully acknowledged state key laboratory of chemical engineering and technology, Tianjin University, Tianjin, P.R.
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