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Online since: August 2013
Authors: Yi Hua Mao, Ping Wang, Fei Sun, Wei Hua Zhou
Green building supplier selection based on advanced entropy-revised G1 combination weighting and TOPSIS Yi hua Mao1.a, Ping Wang1,b , Fei Sun1,c ,Wei hua Zhou2,d 1School of Civil engineering and Architecture,Zhejiang university,Hangzhou,China 2School of Management,Zhejiang university,Hangzhou,China azjumyh@163.com, bsophia12350@126.com, csunfeizju@163.com, dlarryzhou@gmail.com Keywords: advanced entropy-revised G1; TOPSIS; green building; supplier selection Abstract.
Economically, “Green” means abandoning the simple resource consuming economy, seeking a win-win goals of economy and ecology and finally establishing a system satisfying the material demand of human beings without destroying the balance of ecology[3].
Numerical example A company desires to select a suitable supplier to purchase the key components of its green building,four candidate suppliers (S1, S2, S3,and S4) remain for further evaluation after the first screening progress.The progress of calculation and result of it shows in table 2and table 3.
Online since: January 2011
Authors: De Li Jia, Chun Sheng Wang, Rui Jia Wang
In cutting process, if low-melting-point material is anode, then metal vapor will appear and it is easier for ionized electrons flow to enter into anode.
Fluctuation suppression is the key of obtaining high cutting quality and strong cutting ability.
Control Strategy of Inverted Power Supply for Plasma Cutting, Control Engineering of China, Vol.16, No.2, 184-187 (2009)
Online since: March 2014
Authors: Peter J. Mutton, John M. Cookson
This material can sustain very large fatigue crack prior to failure; as shown in Figures 2 and 3, the fatigue cracks found in couplers and yokes can progress across almost the entire section prior to failure from overload.
In this context, the suppression of fatigue crack initiation is a key issue in terms of longevity of service life.
Conference on Railway Engineering (CORE2012), Brisbane, RTSA
Online since: June 2012
Authors: Hua Wang, Wen Gui Gao, Ming Yu Zhang
Effect of CeO2 Promoter on Catalytic Performance of CuO-ZnO-ZrO2/HZSM-5 Catalyst for Carbon Dioxide Hydrogenation into Dimethyl Ether Mingyu Zhanga, Hua Wangb, Wengui Gaoc Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education ,Kunming Univesity of Science and Technology, Kunming 650093,China .
State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province ,Kunming 650093,China azmy8711@yahoo.com.cn,bwanghuaheat@hotmail.com,cgao_wengui@126.com Keywords:Ceria, Carbon dioxide, Hydrogenation, Dimetyl ether, CuO-ZnO-CeO2-ZrO2 catalysts Abstract:A series of CuO-ZnO-CeO2-ZrO2/HZSM-5 catalysts were prepared and characterized by XRD, H2-TPR.
A remarkable property of this material is the number of effective redox Ce4+/Ce3+ sites and their ability to exchange oxygen.
Online since: January 2012
Authors: Ze Fu Bao, Jiang Ping Wang, Ya Zhou Jiang
Stone wheel Based on the above principles and methods of face gear grinding, we can resolve three key issues: the direction of round billet transmission, wheels and wheel billet into a meshing relationship between the developments, the anchor ring grinding wheel section involution silhouette exhibition becoming.
(5) The is the critical speed, r/min; The is the acceleration of gravity; The is density of the material for the screw, steel is;The is the bottom diameter of the screw cross-sectional area, mm2; The is the screw bottom diameter, mm; The is the screw the elastic modulus,;The is the screw bottom diameter of the moment of inertia,mm4;The is the distance between supports, mm; The is the coefficient depends on the screw installed Table 3; Generally, taking the safety factor consideration, we will take the rotational speed high (according to Figure 3), if it cannot satisfy this condition, you should increase (increase) or reduce
In the engineering calculations, it is said to be the rated fatigue endurance which refers to a number of ball screw in the same dimensions, specifications and precision, they rotate under the same condition, in which 90% of them the spalling fatigue does not occur in the case of the total operation rpm. or you can use the total ration time or total distance time instead.
Online since: February 2013
Authors: Ye Ping Shi, Xuan Wang, Meng Meng Wang, Rong Xin Wang, De Bin Xiu, Yun Bo Shi
Design of wireless sensor system for agricultural Micro environment based on WiFi SHI Yun-bo1,a, SHI Ye-ping1,b, XIU De-bin1,WANG Xuan1, WANG Meng- meng1 and WANG Rong-xin1 1Institute of Measurement-Control Tech & Communications Engineering, Harbin University of Science and Technology, The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin 150080, China ashiyunbo@126.com, bxxsypxx@yahoo.com.cn Keywords: Agricultural microenvironment; Monitoring system; Wireless Sensor Network; The WiFi module Abstract.
The system temperature sensor is the platinum resistance with the graduation of Pt1000; the humidity capacitance which used for humidity measurement is polyimide material; MG811 type carbon dioxide sensor using solid electrolyte, it makes little effects on temperature and humidity and has good sensitivity and selectivity.
Online since: July 2013
Authors: Song Jian Bao
LED Visible Light Communication System Design and Performance Optimization Based on Ethernet Songjian Bao (College of Electronic and Electrical Engineering Chongqing University of Arts and Sciences, Yongchuan Chongqing 402160, China) bsj126@126.com Keywords: visible light communication; Ethernet; Tailing phenomenon; broadband access Abstract.
LED light source model [4] as shown in Fig. 7, in the figure, RS is LED material resistance, Cd is equivalent junction capacitance, Id is LED current.
Sharpening circuit in parallel in the LED light source at both ends, the key element of the circuit is large inductance LP and resistance RP, capacitance CB provide to segregate DC, LED not be short circuit.
Online since: August 2013
Authors: Gang Shi, Jin Chuan Zhang, Bo Li, Xuan Tang, Chong Liu, Wen Zheng Jin, Xiao Rui Du, Yun Feng Zhao
Aggregation Condition And Prediction Of Favorable Area For Xujiahe Formation Shale Gas In Guangyuan Tenement Blank Area Gang Shi 1, 2,a,Jinchuan Zhang 1,Bo Li 3Xuan Tang1 ,Wenzheng Jin1, Xiaorui Du1, Chong Liu1 Yunfeng Zhao1 1School of Energy Resources, China University of Geosciences(BeiJing) 100083, China 2Key Laboratory of Tectonics and Petroleum Resources(China University of Geosciences ),Ministry of Education, Wuhan 430074, China 3China Huadian Engineering co.LTD ashgangsun@163.com Key words: Shale Gas; Xujiahe Formation; Guangyuan Area; Favorable Area Abstract: The Guangyuan area is located in the northern section of the Longmenshan fault zone, with strong tectonic activity, complex and changeable strata, low level of exploration and complex development status of shale.
Generally speaking, Triassic organic matter is of high abundance, with material foundation for hydrocarbon. 2).
Online since: October 2010
Authors: Li Cui, Xian Lei Hu, Xianghua Liu
Analysis of Leveling Strategy for a plate Mill Li Cui1, a, Xianlei Hu1, b and Xianghua Liu1, c 1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China a cuilitianda@163.com, bhu_xianlei@263.net, cliuxh@mail.neu.edu.cn Keywords: Leveling strategy, Plate mill, Plastic deformation ratio Abstract.
Plastic deformation ratio is one of the most important factors, which is considered as the feature of fine plates and it should be at least 70% for engineering application [4~7].
Leveling for plate is an alternating loading and unloading elastic-plastic process, so the material obeys to Hooke's Law in the elastic range, but when the plastic deformation occurs, it obeys Prandtl-Reuss incremental plastic theory and satisfies the Mises yield criterion.
Online since: January 2012
Authors: Ru Ming Zhang, Bai Sheng Nie, Tao Yang, Dong Yang
Research on Permeability of Coal Samples with and without The Effect of Supercritical CO2 YANG Tao1,a NIE Bais-heng1,b,YANG Dong 2,b ,Zhang Ruming1,b 1School of Resource and Safety Engineering, China University of Mining & Technology(Beijing), Beijing, China 2Institue of Mining Technology, Tai Yuan University of Technology, Tai Yuan, Shan Xi ae-mail:ytao0723@163.com, be-mail:277358891@qq.com Keywords:Coal sample; supercritical CO2; permeability; variation Abstract.To improve the low-permeability coal seam gas drainage and gas prevention and to seek the methods to improve the permeability of low-permeability coal, the experimental study on supercritical CO2 on coal was conducted in the laboratory conditions, and the experiment on pseudo-triaxial permeability testing for coal samples, with and without supercritical CO2, was conducted.
The processed coal samples were placed in CO2 resistant rubber cover after they were sealed by sealing material.
Acknowledgment Fund support: National key basic research and development plans(‘973’plans) Fund number:2011CB201202.
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