Search results

Evolution characteristics of existing bridge safety based on algebraic topology and image processing JIGUANG HAN1, 2, a, JIANXIN XU3 and ZEMIN XU1 * b 1 Faculty of Civil Engineering, Kunming University of Science and Technology Kunming, PR China 2 Faculty of Engineering and Technology, Yunnan Agricultural University Kunming, PR China 3 Quality Development Institute, Kunming University of Science and Technology Kunming, PR China ahanjiguang123@sina.com, *b abc5100@188．com Keywords: bridges safety; characteristic; image analysis; homology.
After the bridge is built and put into service, the material of reinforced concrete structures will degrade gradually, with the decrease of structure and performance, under the effect of the natural environment, operating environment and internal factors of material, which endanger the safety of the bridge.
The application of neural network in the bridge[10]: In the actual process of detection of bridges, it is difficult to know the stress of the bridge at any time, not only to take huge manpower and material resources, and in the process of measurement, due to the measuring staff in technical differences, and under the hard work of fatigue resistance, it is bound to attract larger human error in the test result.
Study on steel box girder bridges partly stiffened by CFT arch ribs: Journal of Constructional Steel Research Vol. 70 (2012), p. 28-35

Network English reading platform resources is the material base of the platform, including text, images, audio, video, animation, and other various types of libraries, project case, the question bank, etc.
Through the lively, content, moderate difficulty of feedback and testing subject design, help learners get progress, set goals for the next phase of the study, and evaluate the reading material itself.
According to the difficulty to manage the grading test material, by the user test to choose according to their own abilities and interests.
Thelwall: Journal of Information Science, Vol. 27(2001) No.5, p. 319
Kobilarov: Web Semantics: science, services and agents on the world wide web, Vol. 7(2009) No.3, p. 154

While many factors will also influence the change of the cutting force, these factors include: workpiece material, cutting parameters, tool material and geometric parameters and tool wear state.
These features make helical milling process widely applied in typically difficult to cut material in the mold and aerospace industries.
Acknowledgment This work was supported by Tianjin Natural Science Foundation (11JCZDJC22800) and the doctor fund of Northeastern University at Qinhuangdao (XNB201315) and the Hebei Province Science and Technology Support Project..
Dege: CIRP Journal of Manufacturing Vol. 1 (2008), p.64–69 [6] H.

Fabrication and Characterization of Multiwalled Carbon Nanotubes-Alumina Hybrid Compound: Comparison of Various Supported Catalyst Norlin Nosbi1, a and Hazizan Md Akil2,b 1,2 School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia (USM), 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia. 2 Cluster for Polymer Composite (CPC), Science and Engineering Research Centre, Engineering Campus, Universiti Sains Malaysia (USM), 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia. 2 604-5996161 (Tel.) 2 604-5941011 (Faks) anorlin_nosbi@yahoo.com, bhazizan@eng.usm.my Keywords: Multiwalled Carbon Nanotubes (MWCNT); hybrid compound; Chemical Vapour Deposition (CVD); synthesis; supported catalyst.
Introduction Nanostructure material of carbon nanotubes (CNTs) are identified clearly to have the quality in various applications expected to their excellent physical, mechanical, chemical, electrical and thermal properties [1].
Rashidian: Computer Science & Engineering and Electrical Engineering Vol. 16 (2009), p. 61-64
Loon: Journal of Alloys and Compounds Vol. 509 (2011), p. 2784-2788

Combustion Kinetics analysis According to previous literature[7,8], we know that reaction kinetics equation of heterogeneous material in variable temperature follows the expression, (1) Where，α is percent conversion；A is frequency factor；β is heating rate；E is activation energy; f(α) known as mechanism function can express as (1-α)n.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (21066009), Scientific and Technological Project of Inner Mongolia (20080404 ZD01), New Century Excellent Researcher Award Program from Ministry of Education of China (NCET: 2009-09-0865) and Education Department Project of Inner Mongolia(NJ09071).
Fan: Advanced Materials Research Vol. 645 (2013), p. 505-510 [4] J.
Shi.: Thermal Analysis Kinetics(Science Press, China 2001) [8] Y.
Hu: Journal of Analytical and Applied Pyrolysis, Vol.95 (2012), p. 75–78

Analysis of Energy Utilization Technology for Ecological Buildings Rong Wang1,a , Ying Liu 1, b, Xiaoxue E1 , Chuangchao Lv1 and Peng Liu 1 1 School of Energy and Power Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, PR China awangrongkuangda@163.com, bliuying@usst.edu.cn Keywords: Ecological building, Energy utilization technology, Solar energy, Natural ventilation, Sustainable development, Environmental protection Abstract.
The passive solar system relies on the intelligent design and organization of the spaces in a house and on the careful selection of building materials to derive heating and cooling benefits from the free and abundant in the natural environment.
The transformation efficiency is up to 17% by using the new type material TiO2 solar cell invented by Prof.
Science 2011; 332(6027): 293
Zhang: Thermal comfort in naturally ventilated and air-conditioned buildings in humid subtropical climate zone in China, International Journal of Biometeorology, 52 (2008), pp. 385–398

An evaluation system of pulsed GMAW process Gao Ying1, 2, a, Han Jinghua 1, 2,b,Lou Liyan1, 2, c and Li Huan3,4, d 1School of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin, 300222, China 2Tianjin key laboratory of high speed cutting and precision Machining, Tianjin, 300222, China 3School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China 4Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, 300072, China a gaoying@tju.edu.cn, b ning2002208@163.com, c Louly88@126.com, d lihuan@tju.edu.cn Keywords: pulse, welding, simultaneous display, statistical analysis Abstract: A process evaluation system for pulsed gas metal arc welding (GMAW-P) based on the LabVIEW platform has been developed.
The system can not only display the welding arc electric waveform and high-speed camera photography simultaneously, but also can calculate the parameters of welding process. 1 System software components Virtual Instruments (VI) is a product which combines advanced mechanical technology and modern computer science and can eliminate the boundaries between testing instruments and computers[7]. 1.1 Simultaneous display module During the welding process, a synchronous signal of the welding current, voltage and images of the arc can be obtained by using synchronous acquisition technology, but a large amount of information is collected during the process, so it is difficult to analyze quickly.
Base material is Q235 steel.
Welding Journal, 2006, 85(3): 52-62 [7] Yang Y Q, Yin S Y, Bai S J et al.

Materials and methods The structure of most litchi trees, can be divided into three parts: root, trunk and canopy, as shown in Fig. 1.
According to the physical characteristics of the material of litchi timber, E=10GPa and ρ=1000kg/m3, other parameters, such as trunk length, trunk radiuses, and canopy mass, etc, which will be used in the analysis, will be assigned according to the range of most litchi trees growing in orchard.
Acknowledgements The research work of this article is jointly supported by National Science Project of China with Research Grant 30900870, 31071583 and 51005080 and by Science Project of Guangdong Province with Research Grant S2011010001933.
African Journal of Biotechnology Vol.11(14)(2012).p. 3250-3258

Introduction Construction industry is the one of pillar industries in the country and provide material basis for the development of the national economy through the way of investment in fixed assets.
Construction industry can promote the development of building materials, cement and other related industries.
European Journal of Operational Research,1978（2）：429-444
Beijing: Science Press, 2010
,A.Charness,W.W.Cooper. some models for estimating technical and scale inefficiencies in data envelopment analysis[J].Management Science,1984,30（9）：1078-1092

The production process of polyurethane board as follows: firstly, raw material foams is removed from the mold and cut into thin pieces with certain shapes and sizes, and then covered with non-woven fabric and glass fiber up and down the surface, at last it molded by hot pressing and cut according to the length.
Acknowledgments The financial support of the Natural Science Foundation of Shandong Province ZR2010EM037 is gratefully acknowledged.
Advanced Materials Research .Vols.308-310(2011) pp: 1471-1476
[4] Shangying Wei, Shiquan Zheng, etc, Study on On-line Detection of the Cast-billet Surface Defect [J], Journal of WUT(Information & Management Engineering), 2009 Vol.31(3) pp:433-436
Huazhong University of Science & Technology. 2008.