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Online since: January 2013
Authors: Qiao Jia, Ping Yang, Xian Jun Meng
Materials and Methods Materials.
Acknowledgements This work was financially supported by the China Natural Science Foundation (31271819).
The Journal of Pathology, (2008), 214: 149–160.
Online since: September 2014
Authors: Yun Ying Ren, Shu Hu Liu, Yi Xiao
Research on Heritage Values of Industrial Buildings of Xi’an in the First Five-year Plan Period (1953-1957) Yi Xiao 1, 2,a * , Yunying Ren 1,b ,Shuhu Liu 1,3,c 1School of Architecture, Xi’an University of Architecture & Technology, Xi'an, China, 710055 2 School of Architecture, Henan University of Science & Technology, Luoyang, China, 471023 3 College of Architecture, Fuzhou University, Fuzhou, China, 350108 axyhaust@163.com, brenyunying@126.com, c lsh1200@qq.com Keywords: industrial building; the First Five-year Plan Period; heritage value Abstract.
The Xi'an modern industrial building reflects the industrial building development of Chinese interior general cities in modern times, meanwhile it is an important chain link in the history of Chinese architecture and the material testimony of Xi'an modern architecture development, so research on it has great value and significance [4].The Xi’an industrial building, as an indispensable part of Chinese industrial heritage and an organic composition of Xi’an modern city's appearance, its historical and cultural value has been realized by people, and research on it becomes more and more deeply.
Therefore, these industrial buildings are the material testimony of history influenced by multi-culture.
Finally, the material and structure or special construction method of some industrial buildings may have the technological research value in architectural history.
Journal of Southeast University (English Edition).
Online since: January 2012
Authors: Yi He, Xiao Mei Dong, Chen Hui Zheng
Study on Concrete's Temperature Control Measures for Inverted-Siphons in Wenxian-Boai.section Yi He1, Xiao-mei Dong1, Chen-hui ZHENG2 1Luoyang institute of science & technology , Luoyang.China 2The 4th Engineering Co Ltd.
Through establishing models with the thermal and mechanical properties and taking the calculation method in simulating the non-steady temperature field and stress field of limited units, detailed numerical simulation method is carried out to calculate the construction process of concrete, environmental conditions, surface heating methods, concrete material changes and some other factors.
Concrete is a kind of hot material, shortly after pouring, the temperature of the concrete would rise under the reaction of the cement hydration.
With the advent of cold weather, the tensile stress of the 3 # feature points changes slightly, but it would not exceed the immediate tensile strength. 6 Conclusion a, According to the simulation results, the use of foam insulation board posted outside the template and multi-deck insulation materials with a reasonable construction process, the engineers will be able to reduce the possibility of cracking of the construction in spring and autumn.
Journal of Hehai University, 2002, 30(5): 12-16(in Chinese)
Online since: June 2014
Authors: M. Salman Leong, M.S. Somia Alfatih, M.H. Lim
Applied Mechanics and Materials. (2014)
Journal of Alloys and Compounds, 310, (2000), p. 276-279
[19] Huang Jinying, Pan Hongxia and Bi Shihua, Bearing Fault Diagnosis Based on Bispectrum and Bispectrum Entropy Feature Advanced Materials Research Vol. 159 (2011), p. 708-713 [20] F.
[21] Taikang Ning, Ying-Shieh Kungt and Fu-Shang Weit, Science, C., Detection of distributed gear faults with a new bispectral analysis. (1996), p.1960-1965
Online since: July 2014
Authors: Sen Liu, Jun Ming Zhao, Mao Dong Li, Bo Yang, Ying Tong Chen, Si Xue Guo, Zhi Ping Zhu
Diagnostic analysis of boiler make-up water treatment system in Taishan power plant Junming Zhao1,a, Sen Liu2,b,Maodong Li1,c,Bo Yang1,d,Yingtong Chen1,e, Sixue Guo1,f, Zhiping Zhu2,g 1Guangzhou Special Pressure Equipment Inspection and Research Institute, China Guangdong 2Changsha University of Science & Technology, China Changsha aemail:broodzjm@126.com,bemail:282000517@qq.com,cemail:md92791@21cn.com, demail:272818102@qq.com,eemail:332034523@qq.com,femail:71456341@qq.com, gemail:13808475420@163.com Keywords: Boiler make-up water; Pretreatment system; Desalination system; Corrosion Abstract.
The technical parameters: ①capacity: 200t/h; ②filter speed: 8.14m/h. ③backwashing intensity: 10 L/s.m2; ④the backwashing air consumption: 0.6-1.2 m3 / m2·min (air scrubbing intensity: 10-20 L/s.m2); ⑤head loss: the early 0.3 m, the final is not more than 1.5 ~ 2.0 m; ⑥The suspended solids content of effluent: ≤1 mg/L; ⑦porcelain sand for filter material: 0.5 ~ 1.2 mm, the bottom are big size pebbles, the upper is double filter material; ⑧equipment weight (including the filter material) : about 81 t; weight of equipment operation: about 287 t[1].
Problems and analysis of pretreatment system.①Make-up water is clear and stable, it is not mixed with flocculants and coagulant except sodium hypochlorite solution to sterilize, it does not have the problems of alum flowers floating and gathering occurred in inclined tube sedimentation tank and it also does not need to adjust the dosage of coagulate regularly when the seasons change. ②Air scrubbing gravity filter runs as the mode of being backflushed periodical, generally speaking, it is backwashed once a week and 200 tons of water is consumed each time, the filter doesn’t need air scrubbing for the reason that the differential pressure of filter material in backwashing doesn’t meet the design value. ③The pretreatment process can save medicine and water, which is operated economically and easy to be maintained .
Screening of advanced produced water treatment technologies: overview and testing results[J].IDA Journal of Desalination and Water Reuse, 2013, 5(2): 75-82
Online since: August 2013
Authors: Chao Sun, Shu Li Zhao
In this paper, the recycled concrete flexural members basically force performance for different recycled aggregate replacement rate is studied by experimental. 2 Experiment Overview 2.1 Major raw materials and performance In this experiment, the Hebei Taihang brand 42.5 ordinary Portland cement is used, its measured compressive strength is 60.3 MPa; Hebei Mancheng river sand is used, its fineness modulus is 2.7 and its bulk density is 1573 kg/m3; the continuous level of 5~20 mm of Hebei Mancheng gravel is used, its gravel packing density is 1558 kg/m3; recycled coarse aggregate is made manually by the abandoned test block of Hebei construction Group, the particle size is 5~20mm which is continuous gradation.
Table1 Mixing ration of concrete R * Water absorption of recycled aggregate W/B Material usage(kg/m3) Slump constant(mm) C S natural aggregate recycled coarse aggregate W* 0% 5.6% 0.50 410 720 1089 0 205 80 30% 5.6% 0.50 410 720 762.3 326.7 223.3 95 75% 5.6% 0.50 410 720 272.3 816.7 250.7 114 Note: R* is the recycled aggregate replacement ratio which is the ratio of recycled aggregate quality with all the aggregate quality; W* is the water which includes the value calculated and the value of recycled aggregate absorption, they are added at the same time.
Fig.1 Dimension and reinforcement of beam 2.4 Experimental device and measurement content The test is done in the material structure laboratory of Hebei Agricultural University.
[3] CAO Wanlin,DONG Hongying,ZHANG Jianwei,XU Fangfang,LI Donghua ,Experimental Study on Working Performance of Recycled Concrete Structures [4] ZHOU Jinghai,ZHANG Wei,LIU Aixia3,Bend Performances of Recycled Coarse Aggregate Concrete Beam[J]   Journal of Shenyang Jianzhu University(Natural Science) 2008.05
Online since: August 2014
Authors: Hui Yu Huang, Yang Hong
Table 1 Blunt standard of carbide tools Workpiece Material Processing Properties Blunt Standard Carbon Steel, Alloy Steel Rough turning Precision turning 1.0-1.4 0.4-0.6 Grey Cast Iron, Malleable Cast Iron Rough turning Semi finish turning 0.8-1.0 0.6-0.8 Heat Resistant Steel, Stainless Steel Rough turning, Precision turning 1.0 In this experiment, we choose 45 steel rods as cutting workpiece, processing method for semi finish machining, tool for YT14 cemented carbide cutting tool.
Turning Lathe: CA-6140 Workpiece Material: 45 Steel Rods (Size: φ90*500mm, Hardness: HB200 ) Tool Blade: YT14 indexable carbide insert Sensor: Piezoelectric acoustic emission sensor Amplifier: PxPA31 Amplifier (Magnification: 100 times) CCD: Measurement Precision can reach 0.01mm Experimental scheme.
Jackson, etal: Materials Evaluation, Vol. 53(1995) NO. 2, p. 1052-1058
Arrazola: CIRP Journal of Manufacturing Science and Technology Vol. 1 (2008), p. 97–102
Online since: August 2009
Authors: Ying Xiang Liu, Jun Kao Liu, Wei Shan Chen, Sheng Jun Shi
Duralumin alloy (ρ=2810 kg/m3, E=7.2×1010 N/m2, σ=0.33) is the selected material of horn.
Steel (ρ=7800 kg/m3, E=2.06×1011 N/m2, σ=0.3) is the selected material of rear cap and flange bolt.
The PZT ceramics material is PZT-41.
Acknowledgements This project is supported by the National Natural Science Foundation of China (No. 50875057).
Zhao: Journal of Vibration, Measurement & Diagnosis Vol. 24 (2004), p. 1-5 (in Chinese) [3] LI Hua-feng, GU Cheng-lin: Proceedings of the CSEE Vol. 22 (2002), p. 67-70 [4] T.
Online since: January 2012
Authors: Chao Yan, Yue Li, Xian Ming Qin, Juan Zhao
Raw materials Cement: Long Lin PO 42.5R grade early-strength Portland cement.
Acknowledgements This work was financially supported by the Beijing Natural Science Foundation (8100001).
Guangdong Building Materials.
Canadian Journal of Civil Engineering.
Online since: February 2011
Authors: Nu Wen Xu, Chu Nan Tang, Chun Sha, Ru Lin Zhang
Rock or rockmass is an obvious heterogeneity material and how to characterize the feature is of significance for the engineering.
In RFPA2D code, m is defined as the homogeneity index of the material.
A larger value of m implies a more heterogeneous material and vice versa.
Acknowledgements Financial supports from the National Natural Science Foundation of China (Grant Nos. 10672028, 50820125405, and 40638040) and National Basic Research Program of China (973 Program, Grant No. 2007CB209400) are greatly appreciated.
Mech.Eng Vol. 29-5(2010), p. 915–925(in Chinese) [5] J.M.Duncan: Journal of Geotech.
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