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Online since: February 2013
Authors: Rui Feng Jin, Jian Zeng, Hao Tang
Secondly, a harbor should be built in center fishing port district, the brake and reservoir should be consolidated, and the engineering construction materials should be improved to cope with flood and typhoon more effectively.
Acknowledgements This work was financially supported by the Natural Science Foundation of China (51078256), Project supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (20090032110046), Natural Science Foundation of Tianjin (12JCYBJC14200) and Natural Science Foundation of Tianjin (12JCYBJC14400).
[2] Dehong Zhou, “Research on Safety Planning and Risk Management for Chemical Industry Park,” Wuhan: China University of Geo-science, 2010(In Chinese)
[5] Shengxie Xiao, Theory and Application of Disaster Chain, Beijing: Science Press, 2006 (In Chinese)
[7] Weicheng Fan, Lizhong Yang, “Safety Science and Engineering of Urban and Industrial Fire,” Bulletin of the Chinese Academy of Science,: pp.181,Mar 2000(In Chinese)
Online since: December 2014
Authors: Miroslav Macák, Jana Galambošová, Marek Živčák, Vladimír Rataj, Pavol Slamka, Katarína Olšovská
Material and Methods To detect the crop spectral reflectance, the active system Crop Circle ACS 430 (Holland Scientific) with PolySourceTM light source was used.
Penuelas, Remote sensing of biomass and yield of winter wheat under different nitrogen supplies, Crop Science, 40 (2000) 723–731
Royo, Relationship between growth traits and spectral vegetation indices in durum wheat, Crop Sciences, 42 (2002) 1547–1555
Guo, Early detection of canopy nitrogen deficiency in winter wheat (Triticum aestivum, L.) based on hyperspectral measurement of canopy chlorophyll status, New Zealand Journal of Crop and Horticulture Science, 39 (2011) 251–262
Schmidhalter, Optimising three-band spectral indices to assess aerial N concentration, N uptake and aboveground biomass of winter wheat remotely in China and Germany, Journal of Photogrammetry and Remote Sensing, 92 (2014) 112–123.
Online since: September 2013
Authors: Jun Cang Tian, Hui Shen
Material and methods Basic profiles of test site The test site lies to a farm of Ningxia in China.
Journal of Northwest A and F University: Natural Science Edition, 2010, (7):105-110.
Journal of Maize Sciences, 2012,20(1):146-152.
Stress-induced morphogenic responses: growing out of trouble [J].Trends in Plant Science,2007,12(3):98-105.
Online since: September 2013
Authors: Yan Li, Hong Tao Bi
The ratio optimization of side to main span in low-pylon cable-stayed bridge based on Yudao River Bridge Hongtao Bi 1,a Yan Li2,b 1 Architecture and Civil Engineering, Harbin University of Science and Technology, Harbin, China, 150080 2 School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China, 150090 a bihongtao1984@163.com, b liyan2011@hit.edu.cn Keywords: low-pylon cable-stayed bridge; numerical analysis; mechanical properties; ratio of side to main span; Abstract: This paper presents an optimization model for investigating the influence on the ratio of side to main span in low-pylon cable-stayed bridge.
Under the final state, the bending and tension-compression strain energy of the structure can be expressed as: (6) where S represents the total number of the girder and pylon elements, Li, Ei, Ii, Ai represent the length, material elastic modulus, moment of inertia and area of cross section, MLi,MRi,NLi,NRi represent the bending moment and axial force from two directions, Eq.6 can be changed as: (7) Where: (8) (9) (10) where represent the vector composed by the bending moment and axial force of two directions under dead-load; represent the response matrix composed by the bending moment and axial force of two directions; [B],[C] are diagonal coefficient matrix.
Journal of Southeast University. 2012, 42(03):526~530 [7] Liang Peng, Xiao Rucheng, Zhang Xuesong.
Journal of Tongji University. 2003, 31(11): 1270~1274 [8] Chen Baolin.
Sichuan Building Science, 2010.36 (4):62~66 [10] Yang Qi, Li Qiao.
Online since: September 2013
Authors: Ying Zi Yin, Yan Zhang, Gen Tian Zhao
Research On Bearing Capacity Of Axiallycompressed Short Columns Yin Yingzi1, a Zhang Yan2, b Zhao Gentian 1, a 1Architecture and civil engineering school , Inner Mongolia University Of Science & Technology, Baotou 014010, China 2Civil engineering school , Hetao College, Bayannur 015000, China a yinyingzi2005@126.com ,b yanzi0478_404@163.com Keyword:steel reinforced high-strength concrete the steel radio the stirrup ratio short-columns research Abstract: Steel reinforced concrete structure (SRC) is commonly used in high building, but the research on properties of steel reinforced high strength concrete structure (HSRC) composed of high strength concrete and steel reinforced concrete is rarely carried out.
Specimen number concrete strength grade(N/mm2) Section features b×h(mm2) main reinforcement Steel cross section size steel content( %) stirrup stirrupreinforcement ratio(%) 1 60 250×250 4Φ12 I10 2.30 6@75 0.73 2 60 200×200 4Φ12 I10 3.59 6@100 0.73 3 60 200×200 4Φ12 I12 4.53 6@100 0.73 4 60 200×200 4Φ12 I14 5.38 6@100 0.73 5 60 200Х200 4Φ12 I12 4.53 6@50 1.47 6 60 200Х200 4Φ12 I12 4.53 6@100 0.73 7 60 200Х200 4Φ12 I12 4.53 6@200 0.37 8 60 200Х200 4Φ12 I12 4.53 6@400 0.18 Table 2 Concrete Strength grade of Specimen Table 3 Standard Physical Mechanics Performance of Steel( MPa) Specimens 1 2 3 4 fcu 57.8 55.7 55.5 64 3.2 Test load form 3.2.1 Testing apparatus The test is conducted by the 5000 kN long column test machine in building science research institute of Inner Mongolia University of Science & Technology, which is directly loaded through the hydraulic testing machine, and the load level is directly controlled by the hydraulic testing machine.
Knife hinge 4. the vertical displacement meter 5. the horizontal displacement meter 6. press the bottom Fig.4 Pattern of add load Fig.3 Experiment machine picture Table 4 Standard of concrete resistance strain piece Model Resistance value(Ω) Sensitivity coefficient Material Grade BE120-3AA 120.0±0.2 2.05±0.6% paper A Table 5 Standard of steel resistance strain piece Model Resistance value(Ω) Sensitivity coefficient Gate length x gate width Grade BE120-2AA 120.1±0.1% 2.05±0.28% 2×1 A 3.2.2 Test loading system In order to guarantee the precision of the loading point, firstly the geometry center is centered, which is auxiliary complete by a vertical line, and then using physics centering.
Journal of Dalian University of Technology, 2002(2): 218-221 [2] Bin Li, Yang Wen, Yunyun Li.
Journal of Baotou University of Iron and Steel, 2006(2): 197-199 [3] Chuanzheng Ma, Xiaomei Li, Lianguang Wang.
Online since: January 2014
Authors: Yan Fang Yue, Zhi Bo Xin, Jin Ye Wang
Finite Element Analysis for the Welding Column of CNC Boring Machine YUE Yan-fanga, XIN Zhi-bob and WANG Jin-yec School of Mechanical & electrical Engineering, Hebei University of Science & Technology, Shijiazhuang, Hebei 050018, China ayanfangyue@126.com,bxinzhibo100@163.com,cwangjinye3@163.com Keywords: Welding Column of CNC Boring; Finite Element Analysis; Stress; Strain Abstract.
The Column choice Q235 steel as welding material, select the corresponding coefficient of material is: the elastic modulus is EX = 2.06 x 1011 pa; Poisson's ratio PRXY = 0.3; Density of ρ= 7.8 kg/m2.Form of meshing using intelligent, the Smart Size level set to 4.After meshing, node number is 794859, unit number to 425253.Finite element model is shown in figure 2.
Stress concentration occurs in the ribs of column bottom plate, the maximum stress is 87.4684MPa, and it far less than the material allowable stress 235MPa.
In order to lose weight and reduce material waste to optimized the structure of column.
AIAA Journal, 2004,42(3):622-630
Online since: June 2014
Authors: Fathoni Usman
The Plot of the stress against ratio of hw/tw from FEA results Adding the coefficient k and incorporate the material properties, E = 2.05 x 106 N/mm2 and n = 0.3, the Eq. 10 becomes: (12) The results from the numerical analysis assumed the models are in Elastic-Isotropic material.
With that assumption, Eq. 12 is sufficient when the material is in linear elastic stage, Therefore Eq.12 can be determined as the elastic critical shear stress, tcre.
Inelastic buckling occurs after the stress exceeded the proportional limit of the material and before the stress reaches the ultimate strength [3].
Yuen, The Influence of Boundary Conditions on the Shear Buckling Behavior of Thin Corrugated Plates, International Conference on Advances in Steel Structures, Elsevier Science (1996) 709-714
Hamilton, Shear Strength of Beams with Corrugated Webs, Journal of Structural Engineering (1996)
Online since: June 2011
Authors: Brendan O'Flynn, Michael Hayes, Cian O'Mathuna, Ning Ning Wang, Wen Si Wang
The Seebeck effect enable this device generates electric potential when a temperature difference applied across P-N junctions of thermoelectric material in TEG device.
Furthermore, the Seebeck coefficient of most commercial off-the-shelf thermoelectric material can only create voltage of the order of micro volts per Kelvin, the voltage difference provided by the TEGs are insufficient to directly power WSN.
However, the size of mechanical manufactured Bismuth telluride thermopiles is difficult to scale down further in the foreseeable future due to the characteristics of the material and manufacture process.
Sensors Journal, IEEE 8(6): 678-681
Wang; Jafer, E.; Hayes, M.; O'Flynn, B.; O'Mathuna, C.; , "Autonomous wireless sensor network based Building Energy and Environment Monitoring system design," Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on , vol.3, no., pp.367-372, 17-18 July 2010
Online since: December 2013
Authors: Ju Zhang, Kun Hua Zhong, Lei Feng Liu, Yuan Yao, Yu Wen Chen
Testing and experiment We implemented a simple animation material resources retrieval system, to verify the Click-Tracking Network.
Each animation material resource has a name, description of material resources and the corresponding resource link address attribute.
According to the query condition, the system returns the animation material resources query address and the calculated scores which match the query.
Acknowledgement This work was supported by National Science and Technology Ministry(2013BAH25F02) and(Y21Z070E10 ) References [1] V.
Luhn:IBM Journal of Research and Development, vol. 1(4), pp. 309–317, 1957
Online since: January 2013
Authors: Hao Hu, Jia Ning Zheng, Dao Zheng Huang
Introduction The supply chain is a worldwide network of suppliers, factories, warehouses, distribution centers, and retailers through which raw materials are acquired, transformed, and delivered to customers.
Generally, Shipbuilding Supply Chain is an integrated functional network chain structure, which based on the shipbuilding companies as the core, through the control of information flow, capital flow, and logistics, starting from the procurement of raw materials, the manufacturing ​​of the intermediate products and the final products, and the final delivery, which connect the suppliers, shipbuilders and the ship-owners [2].
Science Technology and Engineering, 2008 Vol.8 No.15, pp. 4264-4269
International Journal of Manufacturing Technology and Management.
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