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Online since: December 2011
Authors: Bin Peng, Bo Zhu, Fei Liu
GSPN-Based Modeling Approach for Analyzing Complex Factors in Production Process of Automatic Machining Line Bin Peng1, a Bo Zhu 1,b and Fei Liu1,c 1State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, China apengbin213213@163.com, bzhubo19781022@163.com, c fliu@cqu.edu.cn Keywords: Generalized Stochastic Petri Nets; Automatic Machining Line; Complex Factor Abstract.
Introduction AML is a type of automated manufacturing system, which can automatically machining, transport and store work pieces in production process, and commonly consists of several machine tools, material handling systems, auxiliary devices, control systems.
Generally speaking, tool life is affected by many factors, such as material, greasing, cooling, regrinding etc., but has the characterization of relatively fixed wear rules for a set of parts.
Yang: Chinese Journal of Mechanical Engineering, Vol. 3 (2004), pp.427-432
Online since: October 2014
Authors: Ji Hong Tong, Ji Zhong Wang
Reactor effects on the AC governor system transformer grid side harmonics WANG Jizhong1,a, TONG jihong2,b* 1Offices of Academic Affairs, Beihua University, Jilin 132013, China 2Institute of information technology, Beihua University, Jilin 132013, China abeihuawjz2006@126.com, b635985137@qq.com Key words: AC speed control; reactor; harmonic rate; simulation Abstract: The paper makes the simulation and analysis to the power harmonic which is produced by the AC drive device of the hot strip mill in the background of the metallurgical industry.
Introduction In steel manufacturing, steel rolling process is very complex, involving comprehensive techniques in materials, machinery, hydromantic, electric control and computer control technology.
[8] Li Min, Zhang Cong, Yuan Xin: submitted to Journal of Electric Power Science and Engineering(2011).
Online since: January 2013
Authors: Jorge Otubo, Karine Andrea Käfer, Heide Heloise Bernardi, Leonardo Kenji Fudo Naito, Nelson B. Lima
This class of materials exhibit advantageous characteristics like good corrosion resistance, good mechanical properties and low cost but with lower shape recovery compared to NiTi, limiting their widespread use in engineering [2].
For 1 ECAE pass sample, the grain size is the key factor for the improvement of total shape recovery degree.
Online since: December 2010
Authors: Tsung Jung Cheng, Chih Yi Chang, Pei Ni Tsou, Ming Ju Wu, Yun Shu Feng
Moreover, infiltration of outdoor particles and tracked-in materials such as soil organics and pet dander produced by human and animal activities also contribute to indoor particle concentration [3, 7].
Key objectives of the research were: 1. to evaluate the determinants of mass concentration of indoor particulate matter; 2. to explore the relationships between indoor particulate matter and the measured parameters.
The parameters of temperature, relative humidity, CO, CO2 and O3 were monitored by AirBoxx/KD Engineering with 1 minute sample interval.
Online since: January 2013
Authors: Tao Wu, Jun He, Hai Tao Zhao, Sam Kingman, Kai Qi Shi, Di Shen, Yi Yun Zhang
The reason could be the deep and narrow channels of zeolite being partly blocked by copper and other materials crystallites after catalyst preparation process.
Acknowledgment Financial supports from Ministry of Science & Technology (2008DFA61600), Bureau of Science & Technology, Ningbo City (2008B10048) and State Key Laboratory of Clean Energy Utilization (2010) are acknowledged: References [1] D.
Nevers, Air Pollution Control Engineering (second edition).
Online since: October 2010
Authors: Claudio Modena, Mariano Carraro, Tiziano Ghedina, Alessandro De Sabbata, Dalla M. Benetta, F. Casarin
Marco Church in L'Aquila: Provisional Interventions after the 2009 Abruzzo Earthquake CARRARO M 1,a, GHEDINA T 1,b , DE SABBATA A 1,c , MODENA C 2,d , CASARIN F 2,e and BENETTA M Dalla2,f 1 Regione del Veneto , Segreteria Lavori Pubblici e Protezione Civile Calle Priuli , Venezia, Italy 2 Department of Structural and Transportation Engineering, University of Padova , Padova, Italy a Mariano.Carraro@regione.veneto.it, b Tiziano.Ghedina@regione.veneto.it, c Alessandro.DeSabbata@regione.veneto.it, d modena@dic.unipd.it, e casarin@dic.unipd.it, f dallabenetta@dic.unipd.it Abstract: The 6 th of April 2009 a strong earthquake (rated 5.8 on the Richter scale) struck the Abruzzo region in central Italy, causing hundreds of casualties and devastating the historical city of L'Aquila and several small towns in the area.
Works will consist in the removal (with sorting of valuable and reusable materials) of the internal debris, the construction of a lattice steel tower sustaining the breach in the wall on Prefettura square, and then in the main internal provisional intervention, consisting in the creation of steel "portals" in lattice structure, used to prop the still unstable masonry vertical elements, mainly in order to avoid the risk of flexural collapse at mid height of the pillars.
Monitoring is being more and more considered, in the field of cultural heritage buildings, as a key activity in order to increase the knowledge on the structural functioning of monuments and therefore to have a deeper insight on their conditions, allowing to intervene with more confidence with a strengthening intervention, if needed, but also to prevent the execution of intrusive repair works, if they are not justified by an experimentally demonstrated worsening of the structural conditions of the structure (Guidelines for evaluation and mitigation of seismic risk to cultural heritage with reference to technical constructions regulation Italy).
Online since: February 2011
Authors: Yu Yu Li, Bo Huang, Wei Dong Meng
EOQ Model with Controllable Lead Time, Setup Cost and Backordering Rate Bo Huanga, WeiDong Mengb, YuYu Lic College of Economics and Business Administration, Chongqing University, Chongqing, China ahuangbo33@163.com, bmengweidong@cqu.edu.cn, clyyjame@163.com Key words: Lead time; Setup cost; Price discount; Backordering ratio; EOQ model Abstract: This paper developed an EOQ model, in which the demand follows a general distribution, under the assumption that lead time can be shortened and setup cost can be reduced by added investment, and backorder rate depends on inventory level and price discount in the period of shortage.
Tersine: Principles of inventory and materials management (New York: North-Holland 1982)
Chuang: Computers and Industrial Engineering Vol. 40-4(2001), pp. 339-348 [3] J.C.H.
Online since: October 2011
Authors: Ping Hua Zhu, Wen Bin Chen
Synthesis of 1-(4-antipyrine)-3-(sulfanilic acid)-triazene and Study on Determination of Zinc(II) in water samples by Spectrophotometry Pinghua Zhu1, Wenbin Chen 1, a 1 Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang,Jiangsu 222005, China Key words: 1-(4-antipyrine)-3-(sulfanilic acid)-triazene;Spectrophometry;Zinc(II) Abstract:The synthesis of a new triazene reagent 1-(4-antipyrine)-3-(sulfanilic acid)-triazene (ASTA) and is proposed as a new sensitive reagent for the extractive spectrophotometric determination of Zinc(II) was established.
XFS, FAAS and ICP-AES, for the determination of the total amount of metals in a diversity of complex materials.
Online since: December 2011
Authors: Bo Li, Jing Cao, Li Hua Liu, Zhi Hua Zhou
Modification of Fly Ash by Sodium Tetraethylenepentamine-multi Dithiocarbamate and its Removing Performance towards Cu(II) Lihua Liu1,a, Bo Li 1.b, Jing Cao 1.c, Zhihua Zhou1,d 1Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education and Hunan Province, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan Province, P.R.China aemail: liulihualj@sina.com.cn, llh213@163.com, bemail: 364390063@qq.com, cemail:caojing702@163.com; demail: zhou7381@126.com Keywords: Modified fly ash, Copper wastewater, Removal rate, Sedimentation rate, Stability Abstract.
Materials.
Online since: August 2013
Authors: Nai Zheng Xu, Hong Ying Liu
Materials and methods Jiangsu Province, the 2nd largest economic area in China, extends between 30°45–35°07N latitude and 116°22–121°55E longitude with a total area of 10.26×104 km2, or 1.07% of the total area of China, in the east of Chinese Mainland (Fig. 1).
The interpreting key system is established by discriminatory mark in RS images by the aid of field survey, and the identifications of interpretation urban territories is designed based on the image characters.
Since the 1980s, the vast amounts of groundwater has been taken out through engineering drainage and supplied for production and living, the carbonate, bicarbonate dissolved in groundwater deposited in soils, which make soil pH decrease and SIC density increase.
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