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Online since: December 2013
Authors: Ai Min Li, Hua Hu Cheng, Mo Jia Huang
Stress Distribution Form and Function Representation of Four Free Edges Square Basal Bottom Slab Touching Foundation Aimin Li1,a, Huahu Cheng1,b and Mojia Huang1,c 1Institute of Engineering Mechanics, Nanchang University, Nanchang, Jiangxi, 330031, China aliaimin@ncu.edu.cn, bchenghuahu775858@163.com, cmojiahuang@hotmail.com Keywords: square basal bottom slab, contact stress, width height ratio, numerical simulation, fitting Abstract. this article constructed the stress distribution’s function expression of four free edges square basal bottom slab touching foundation respectively from the two aspects of symmetric and anti-symmetric load, placed the foundation on the surface of the sandy soil, do numerical simulation to the contact stress between foundation slab and foundation through the large scale finite element analysis software ANSYS, and fitting by adopting the contact stress function proposed in this article.
The key of back plane flexural torque calculation is to determine the contact stress between the foundation and the soil, specific formula is based on the assumption of ground reaction force linear distribution, while the width height ratio is more than 2.5, it is not clear about the stress distribution between the foundation and the soil at present[4,5].
When modeling using solid45 entity unit, base adopt the isotropic elastic material, cohesive soil constitutive model adopt ANSYS’ Drucker-Prager yield criterion.
Online since: July 2017
Authors: Marcos A.S. Barrozo, A.M.R. Filho, G.R.L. Carvalho, Angelica Silva Reis
João Naves de Ávila, 2121, Campus Santa Mônica, Bloco 1K, 38400-902, School of Chemical Engineering, Federal University of Uberlândia, Uberlândia, MG, Brazil asreis.angelica@gmail.com, b argileumrfilho@gmail.com, cgui.ribeiro119@gmail.com, emasbarrozo@ufu.br Keywords: bubble size, air holdup, surfactant, column flotation Abstract.
The contact and adherence of hydrophobic mineral particles to air bubbles is a key step in this process [11].
Material and Methods Experimental apparatus.
Online since: April 2014
Authors: Man Zhao, Yu Rong Zhong, Bao Long Xu
Lu2O3 is a promising scintillator material for ionizing radiation sensors employing CCD detectors, which is applied to more areas in response to the need for high-performance detectors for use in high-energy physics, medicine and industry [3-5].
Cetyl trimethyl ammonium bromide (CTAB) was added as surfactants which performed a key role to reduce interfacial tension sufficiently and promote thermodynamic stability of micro-emulsion.
[7] Fang Xiao-long, Yang Chuan-fang, Chen Jia-yong, Synthesis of ZrO2 nanoparticles by using CTAB/Hexanol/Water/Salts reversed micelles, Engineering Chemistry&Metallurgy. 18 (1997) 67-71
Online since: April 2014
Authors: Yan Wang, Zhi Feng Liu, Ying Han, Jun Dai, Shao Feng Ge
The Planning of Urban Public Facilities via Universal Design Han Ying1, 2,a, Liu Zhifeng1, Dai Jun1, Ge Shaofeng1, Wang Yan1 1 Architectural Engineering Department, Jinling Institute of Technology, Nanjing, 211169, China 2 School of Architecture, South-east University, Nanjing, 210096, China a chelsea_han@jit.edu.cn Keywords: Universal design, Accessible route, Low height service facilities, Fairness, Sustainable Abstract.
Public facilities should implement the same principles, requiring our designers take into consideration of the sustainability of the resource conservation and environmental protection in all aspects including material selection, facility construction, production processes, use of facilities and waste treatment. 4 Conclusions As mentioned earlier, the urban public facilities are used by a wide range of population which reflects the degree of caring people of the city, and it is also an important content of the construction of the urbanization and modern civilization.
Acknowledgement This paper is supported by Urban and Rural Planning discipline of Jinling Institute of Technology which is a key building discipline in Jiangsu Province.
Online since: September 2013
Authors: Yan Zhong Yu, Zhong Yi Huang, Hua Nan Yang
A Novel Dual-Band Tag Antenna for RFID Application Yanzhong Yua, Huanan Yangb, Zhongyi Huangc College of Physics & Information Engineering, Quanzhou Normal University, Quanzhou, 362000, China aemail: yuyanzhong059368@gmail.com, bemail: 370290260@qq.com, cemail: 25598257@qq.com Keywords: RFID; Tag Antenna; Dual Frequency; Microstrip Patch Abstract.
Tag antenna is a key part of RFID systems.
The common substrate material FR4_epoxy, with relative dielectric constant and loss tangent , is selected.
Online since: June 2011
Authors: Ning Li, Fang Fu
International Comparison and Comprehensive Evaluation of Petroleum Industry Ning Li a and Fang Fu b School of Economics and Management, China University of Petroleum, Dongying, China aliningmath@gmail.com, b fufang1009@gmail.com Key words: International comparison; statistic data; comprehensive evaluation; DEA Abstract.
Petroleum is also the raw material for many chemical products, including pharmaceuticals, solvents, fertilizers, pesticides, and plastics.
[3] Fenghua Hou, Zaixu Zhang, Qingzhi Liu: Application of DEA Method with Preference in Petroleum Enterprises Evaluation, Industrial Engineering Journal, No.2 (2001), p.55-59
Online since: September 2013
Authors: Kai Gao, Xi Hong Li, Yi Bin Zhang, Lu Liu, Wei Qiao Yang
National Engineering and Technology Research Center of Agricultural Products Freshness Protection, Tianjin,300384,China 2.
Key Laboratory of Food Nutrition & Safety (Tianjin University of Science & Technology), Ministry of Education, Tianjin, 300457, PR China #These authors contributed equally to this work.
Furthermore, it is able to be a reference used to conduct maceration for winemakers when they want to make a desired wine with a suited maceration method. 1.Material and Methods 1.1 Reagents The active dry yeast (Lalvin BDX), pectic enzyme (Lallzyme EX-V) and the active freeze-dried lactic acid bacteria (VDD.T-80134) were purchased from Lallemand Co.
Online since: July 2013
Authors: Xiao Feng Zhao, Lei Li, Dian Zhong Wen, Cui Cui Zhuang, Bing Han, Yue Li, Jing Ya Cao
Fabrication and characteristics of the nano-polysilicon thin film transistors Zhao Xiaofeng 1,2 a, Wen Dianzhong1,b,Zhuang Cuicui1,Han Bing 1, Li Yue1, Cao Jingya1 and Li Lei1 1Key Laboratory of Electronics Engineering, College of Heilongjiang Province, Heilongjiang University, Harbin, 150080 2The 49th Research Institute of China Electronics Technology Group Corporation, Harbin, 150001 azxf80310@126.com, bwendianzhong@126.com (corresponding author) Keywords: nano-polysilicon; thin film transistors; CMOS technology; LPCVD.
Introduction The TFTs can be classified into organic thin film transistors (OTFTs) and the inorganic thin film transistors depending on the material of active layer[1-2].
Acknowledgements This work is supported by the National Natural Science Foundation of China (61006057) and Foundation for University Young Key Teacher of Heilongjiang Province (1251G046) and Excellent Youth Foundation of Heilongjiang University(JCL201007).
Online since: September 2013
Authors: Bo Wei Lei, Bing Wu, Zhen Jiang Yu, Zhi Yan Zhao, Zhi Guo Guo
Study on the Coal mine Emergency Rescue Information Management System Based on WEBGIS Bing Wu 1, a, Baiwei Lei 1, b, zhenjiang Yu 1, c, Zhiyan Zhao 1, b, Zhiguo Guo 1,b 1 Faculty of Resources and Safety Engineering ,China University of Mining and Technology(Beijing), 100083, Beijing , China including country a wbelcy@vip.sina.com, bleibws@163.com, c 937376536@qq.com Keywords: Coal mine; accident; emergency rescue;webgis Abstract.
Mine emergency rescue ability is a key to ensure the safety of miners and prevent the accident.The coalmine emergency rescue is primarily responsible for rescuing persons in distress, preventing and eliminating the accident after coalmine accidents.
Figure 6 E-R map 4 The introduction of system function First,it provides all kinds of information management and technical support which is necessary for on-site rescue in emergency rescue;Second,it provides emergency exercises and training service for mine rescue crew,the group's leadership and ordinary workers in the daily work; finally, it also provide the management of base relief material, technical data, personnel and the monitor of practice roadway and practice mine.The system which is based on the database information management system establishes the system portal site integrating real-time monitoring system .
Online since: May 2011
Authors: X.G. Shen, J.T. Zhang
Shenb College of Mechanical Engineering & Automation, The North University of China, Taiyuan, China, 030051 ajitangzh@sina.com, b65961420@qq.com Key words: Ultrasonic testing,Thickness,Amplitude Spectrum,Tree classifier.
The time domain aliasing of the ultrasonic detection signals happens when the Coating thickness is small. it results in the extraction of the thickness eigenvalue difficult, even could not be extracted.On the other hand, similar to the inside bonding of rubber coating of the steel,there is a large mismatch between the high acoustic reactance of the metal and the low acoustic reactance of the rubber, and because of the high sound attenuation of the rubber-base material,it leads to weakness of the detection signals and the difficult to thickness eigenvalue extraction.this paper presents a method of using oblique ultrasonic pulse echo in immersion to test the thickness of the rubber layer in the steel - rubber coating structure and the resonant relationship of the two detection echo as the delay time of eigenvalue, and make the eigenvalue extraction boil down to a multi-pattern recognition problem. using a self-design binary tree classifier to classify them, effectively improving the
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