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Online since: September 2013
Authors: Bo Gang Yang, Jin Song Zhang
Application of GPR in Measurement of Kunming Lake YANG Bo gang a, ZHANG Jin-song b Beijing Institute of Surveying and Mapping, Beijing 100038, China Beijing Key Laboratory of urban spatial information Engineering, Beijing 100038, China aybg@bism.cn, bzjs19840109@126.com Keywords: GPR; Lake Storage; RTK; Kunming Lake Abstract.
Work schematic of radar detector on Kunming Lake GPR measurement in the Kunming Lake For the measurement on Kunming Lake, we have considered a variety of factors, including cost, safety and feasibility, we select the vessel used by the ordinary tourist cruise ships, the material is plastic, radar antenna is close to the bottom.
Journal of hydroelectric engineering, 2008, 27(6):131~135 [5] Liu Y F, Wu S Y, Li S X.
Online since: September 2011
Authors: Bai Jing Qiu, Zuo Chao Lv, Yi Jun Fang
Experimental Research of Grain Mass Flow Condition Monitering Systerm Zuo Chao Lv1,a, Bai Jing Qiu2,b, Yi Jun Fang3,c 1,2Institute of Agricultural Engineering, Jiangsu University, Zhenjiang ,Jiangsu,212013, China 3School of Machanical Engineering, Jiangsu University, Zhenjiang ,Jiangsu,212013, China 119840526_lzc@163.com,2qbj@ujs.edu.cn,3fang_yijun@163.com Key words: Grain mass flow,Sensor,Monitor syterm,Test Abstract.
The structure of mass flow sensor is shown in Fig.1.The deflector is used to improve the movement direction of grain and enhance the knock-on effect of the sensor elastic element from grain.A large nylon material damping base and four symmetrical rubber shock absorbers are used to reduce flow measurement accuracy affected from vibration of harvest[4].
Online since: October 2013
Authors: Wei An Xie, Guo Ru Xie, Guan Nan Xi
Research on and Analysis of Enhanced Heat Transfer Tubes Guannan Xi1,a, Weian Xie1,b, Guoru Xie1,c 1School of Mechanical Engineering, Nantong University, Nantong, China aguannanxi@ntu.edu.cn, bxieweian99@126.com, cxie.gr@ntu.edu.cn (Corresponding author) Key words: Heat transfer, Heat transfer enhancement, Enhanced heat transfer tubes Abstract.
At the same time, the spiral groove tube was compared with the smooth circular tubes under the condition of same material, diameter and wall thickness.
Zimparov, N.L Vulchanow and L.B Delvo, International Journal of Heat Transfer Vol. 34(1991), P. 3-17 [5] Zhanfeng Li, Xuezhong Yang, Cryogenics and Superconductivity Vol. 36(2008), P. 56-60 [6] Zhijing Chen, Chemical Engineering & Machinery Vol. 37(2010), P. 609-612 [7] T.A.
Online since: July 2014
Authors: Shun Hong Lin, Lu Yang
City sludge’s differential scanning calorimetry analysis Lu Yang1, a Shun Hong Lin2, b 1 College of Mechanical and Dynamic Engineering, Chongqing University of Science and Technology, Chongqing 401331, China 2 College of Mechanical and Dynamic Engineering, Chongqing University of Science and Technology, Chongqing 401331, China aemail:yyanglu36@163.com bemail:Dim001@163.com Keywords: DSC; power difference, municipal sewage sludge Abstract.
The reaction mechanism The sludge pyrolysis process analyzing from reaction process can be divided into three stages: 1)Dehydration stage (room temperature 100 oC).At this stage, biomass just has physical changes , mainly lose moisture. 2)Solid decomposition stage (100 ~ 380 oC).This is the main pyrolysis.At this stage, biomass thermal decomposition under anoxic conditions,with the increasing of temperature,various volatiles correspondingly separate out,most of the raw material occurs most mass loss. 3)Carbonization stage (> 400 oC).At this stage, decomposition occurs very slowly,the mass loss is much smaller than the second stage.At this stage,C-H, C-O bond in coke is further broken,but the volatilization is continuing,coke weight decreases with a slow rate and tend to be stabilized, which resulting in the enrichment of carbon in the residual solid.
Acknowledgement In this paper, the research was sponsored by the key project of scientific and technological of Chongqing (Project No. cstc2012gg-yyjsB20002) .
Online since: December 2012
Authors: Chong Zhang, Yi Jiang
Research on the initial disturbance of vehicular missile with system vibration analysis Chong ZHANG 1, a, Yi JIANG 1,b 1Department of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China aqob1@163.com , bjiangyi2818@163.com Keywords: vehicular missile; combustion jet flow; attitude simulation; rigid-flexible coupling Abstract.
This paper is based on the complex multiple vehicular missile launch system, simulates the dynamic characteristics of process of launch by use of virtual prototype technology, and calculates the value of combustion jet flow field in missile box by means of engineering software Fluent, then researches the influence to the initial disturbance of missile launch which is caused by whether loading jet flow. 1 System composition and characteristics The launch system is mainly composed of leveling cylinders, girder, turret, erecting oil cylinders, landing gear, launch canisters, and missiles etc.
This paper mainly discuss several key influencing factors, and build the dynamics model based on some assumption as follows: ①Irrespective of engine thrust eccentricity and instability; ②Irrespective of missile’s eccentric mass and variable quality characteristic during launch process; ③Irrespective of the influence of reverse impact from launch position vibration to launch system; ④Besides girder, turret and landing gear, the other components are all consumed as rigid body.
Contact force parameters are related to the material properties, they are set according to test data and empirical value.
Online since: January 2017
Authors: Pruet Kowitwarangkul, Anawat Harnsihacacha
Tracer Injection Simulations and RTD Analysis for the Flow in 3-Strands Steelmaking Tundish Pruet Kowitwarangkul1,a* and Anawat Harnsihacacha1,b 1Department of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok, Bangkok, 10800, Thailand apruet.k.mme@tggs-bangkok.org, banawat.h-mpe2015@tggs-bangkok.org Keywords: Tundish, Clean Steel, Computational Fluid Dynamics, Residence Time Distribution Abstract.
For example, high ɵpeak and ɵmean prevent a short-circuit flow and provide more opportunity for the floatation of inclusions; presence of a relatively large proportion of well-mixed volume indicates adequate mixing in the melt phase and hence better material and heat transport.
The key indicators for the flow characterization such as tpeak, ɵpeak, tmean, ɵmean of the residence time curves, plug volume (Vp), well-mixed volume (Vm) and dead volume (Vd) flows are summarized in Table 2.
Online since: June 2009
Authors: Takeo Shinmura, Yan Hua Zou, F. Wang
Wang 3,c 1 Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan 2 Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan 3 University of Science and Technology Liaoning, 185 Qianshan Zhong Road, Anshan, Liaoning, China a yanhua@cc.utsunomiya-u.ac.jp , bshinmura@cc.utsunomiya-u.ac.jp email, cwfh59@ustl.edu.cn Keywords: Plane Magnetic Abrasive Machining Process, Constant pressure magnetic brush, Form accuracy, Deburring.
Introduction A magnetic field assisting the finishing process was proposed as a process by which material is removed.
Shinmura, Key Eng.
Online since: September 2014
Authors: Hui Xin Dai, Hong Jun Wang, Wei Lin Yang
Progress of Cassiterite Sulfide Ore Beneficiation Weilin Yang1, 2,a, Huixin Dai1,2, b*, Hongjun Wang1,2, c 1State Key Laboratory of Complex Nonferrous Metal Resources Clean Kunming 650093, China 2Department ofMineral Processing Engineering, Kunming University of Science and Technology, Kunming 650093, China a 571795009@qq.com, b dhx6688@sina.com, c 215417552@qq.com Keywords: cassiterite tin sulfide ore; flotation; gravity concentration Abstract: This paper introduces the characteristics and distribution of sulfide ore cassiterite, an overview of the re-election of sulfide ore cassiterite flotation basic skills and status, and the use of tin resources and sorting technology development proposed sulfide ore cassiterite Prospect. 1 Introduction As an important metal tin in the production of human life are widely used.
Today, due to its extensive use of tin, had been included in the "hardware" one, he is widely used in food packaging, metal manufacturing, electronic components production, another important compounds of tin oxide, tin tetrachloride and tin compounds, respectively, used as the ceramic raw material, coal silk dyeing agent, also used as antifouling agents, biocides, wood preservatives, flame retardants and PVC.
[2] Ren Liu-yi1,Qin Wen-qing1, Flotation Research on Recovery of Stannum from Tailing of Cassiterite-polymetallic Sulfide Ore[J], Mining and Metallurgical Engineering,,2009,44-47
Online since: October 2013
Authors: Shou Wen Ji, Hui Yun Teng, Jian Feng Su
Telecommunication network, broadcasting television network and Internet play a key role in both the development and advancement of intelligent building.
Green building refers to the energy-saving building, environmental building and ecological construction, its main characteristic is four savings: save energy, save water, save land and save material [5].
[2] Zhiliang Wang, Fenhua Wang: Engineering introduction of The Internet of things (China Machine Press, Beijing 2011), In Chinese
[3] Jiashi Chen, Weisheng Lin and Xiaochun Dong: Automation & Information Engineering.
Online since: June 2014
Authors: Shou Zhong Zhang
Research on Outward-bound to Improve College Students' Social Adaptation Ability with AQ as the Mediating Effect Shouzhong Zhang1,a 1Physical Education Department of Harbin Engineering University ,Harbin ,P.R.China,150001 azhangshouzhong03@163.com Shouzhong Zhang, Harbin Engineering University.
Key words: Outward-Bound; Social Adaptability; Adversity Quotient; Mediating Effect ABSTRACT There is close relationship between social adaptation ability and the competition ability of college students .However, due to multiple factors such as individual, family and society, contemporary college students’ psychology undergoing dramatic changes and the non-intelligence factors in their AQ (Adversity Quotient) is not enough, showing the low ability of anti-frustration, the lack of debugging skills and cognitive attribution ,and a series of psychosocial tendencies not suited with the society.
The material and data were compiled and analyzed through documentary, experimental method, mathematical statistics. 3 RESULTS AND ANALYSIS 3.1 Two Groups Comparing between Social Adaptability and AQ before the experiment TABLE 1 CMMPARISION OF SOCIAL ADAPTABILITY BETWEEN CONTROL GROUP AND EXPERIMENTAL GROUP BEFORE THE EXPERIMENT Control Group(N=90) Experimental Group(N=90) T P Warmth Self-confidence Responsibility Social acceptance Adaptive flexibility 44.74±5.64 30.36±4.97 18.67±3.16 12.47±3.65 10.79±2.67 45.27±4.55 29.61±5.44 17.24±2.98 11.96±4.31 10.04±3.23 -0.146 0.062 0.252 0.513 0.028 0.97 0.78 0.66 0.07 0.08 PS: * significant differences, p<0.05;** very significant differences, P<0.01.
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