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Online since: January 2013
Authors: Bo Wang Chen, Ran He, Zai Hua Zhang
The spot inspection mainly includes structure layout, components size examine, components apparent quality, crack situation, materials intensity, carbonization depth, rebar array, structure entirety lateral sway and etc
Fig.1 Plane Layout of Wharf Structure Fig.2 Wharf Structure 1-1 Profile
Fig.3 Wharf Structure 2-2 Profile Fig.4 Wharf Appearance After Rebuild
Original data check of engineering structure.
Acknowledgments The presented work was supported by the Natural Science Fund of Education Department of Hunan province (Grant No. 10C0504, 10C0502), Fund Scientific Research Projects of Hunan City University (Grant No. 07B026).
Journal of China University of Mining & Technology, 2007, 36(4):441- 445.
Acknowledgments The presented work was supported by the Natural Science Fund of Education Department of Hunan province (Grant No. 10C0504, 10C0502), Fund Scientific Research Projects of Hunan City University (Grant No. 07B026).
Journal of China University of Mining & Technology, 2007, 36(4):441- 445.
Online since: December 2010
Authors: Ying Chun Tang, Xiao Duo Ou, Bao Tian Wang
The revised formula to calculate soil temperature at x depth with the change of time is obtained as below after referred to the related materials:
(1)
In which the temperature variation extent is as below:
(2)
According to Nanning weather statistics of in 2008-2009: The maximum surface temperature appears at the end of July.
Hunan :Journal of Hunan University(Natural Sciences),2007.7.
Hunan :Journal of Hunan University(Natural Sciences),2007.7.
Online since: May 2013
Authors: Yun Feng Zhang
Especially, based on the fact that hydrocarbon migration would result in fractionation effects of methane carbon isotope, and that in the front of gas plume, methane carbon isotope would become lighter than that of the back, the isotopic information reflects the source of parent material and the geological and geochemical effects of its products [6-9].
The kerogen types are dominated by sapropelic and humic-sapropel, reflecting the hydrocarbon parent material with characteristics of bacteria and algae, and aquatic plankton marine organic matters [11].
Journal of Northwest University(Natural Science Editon), 1995, 25(5): 503-506
The kerogen types are dominated by sapropelic and humic-sapropel, reflecting the hydrocarbon parent material with characteristics of bacteria and algae, and aquatic plankton marine organic matters [11].
Journal of Northwest University(Natural Science Editon), 1995, 25(5): 503-506
Online since: June 2014
Authors: Kai Liu, Fei Peng, Ming Jiang, Guang Rui Tang
The main pillar and the baseboard are made into circular shapes, and the main pillar of foundation and the principal material of tower leg have the same gradient.
The inner force of the principal metal tower of the inclined inserting excavated foundation is passed along the axis of the main pillar to the foundation baseboard, while the top of the main pillar only exerts a small horizontal component on the inclined material of the metal tower and very small bending moment on the whole foundation, greatly improving the stability of the foundation against overturning and effectively reducing the eccentric moment of horizontal component on the main pillar and baseboard of the foundation and lowering the foundation dimensions.
Construction Science and Technology 2012(Z1): 169-170
Chinese Journal of Geotechnical Engineering, 2009, 31 (11): 1779-1783
The inner force of the principal metal tower of the inclined inserting excavated foundation is passed along the axis of the main pillar to the foundation baseboard, while the top of the main pillar only exerts a small horizontal component on the inclined material of the metal tower and very small bending moment on the whole foundation, greatly improving the stability of the foundation against overturning and effectively reducing the eccentric moment of horizontal component on the main pillar and baseboard of the foundation and lowering the foundation dimensions.
Construction Science and Technology 2012(Z1): 169-170
Chinese Journal of Geotechnical Engineering, 2009, 31 (11): 1779-1783
Online since: January 2009
Authors: Bogdan Broel-Plater, Stefan Domek, Arkadiusz Parus
The vibrations depend on the
material the workpiece to be machined is made of, its mass m1, stiffness coefficient k1 and damping
coefficient c1, as well on the cutting tool (characterized by its mass m2, stiffness coefficient k2 and
damping coefficient c2), and on machining parameters, such as: rate of tool travel v, rotational speed
ω, number of teeth z, and depth of cut g.
The block "machining process" represents the nonlinear relationship between the cutting force and the specified cutting parameters (rate of tool travel v, rotational speed of the mill ω, width of cut d), properties of the material to be machined, tool geometry and the relative workpiece-tool motion.
Acknowledgements This research work has been supported by the Polish Ministry of Science and Information Society Technologies as a part of the grants No. 4 T07D 016 29 and No.
Journal of Vibration and Acoustics, Vol. 124, (2002), p. 90-99
The block "machining process" represents the nonlinear relationship between the cutting force and the specified cutting parameters (rate of tool travel v, rotational speed of the mill ω, width of cut d), properties of the material to be machined, tool geometry and the relative workpiece-tool motion.
Acknowledgements This research work has been supported by the Polish Ministry of Science and Information Society Technologies as a part of the grants No. 4 T07D 016 29 and No.
Journal of Vibration and Acoustics, Vol. 124, (2002), p. 90-99
Online since: March 2010
Authors: Ying Chun Liang, Li Hua Lu, Fu Li Yu, Bao Ku Su
Table 1 Parameters of two ballscrew drives [4]
Stage 1 Stage 2
Screw average diameter (d) 25.4 [mm] 16.0 [mm]
Screw lead (l) 25.4 [mm] 5.08 [mm]
Screw length between bearings (L) 1100 [mm] 406.4 [mm]
Ball screw material steel steel
Ball-nut stiffness (kn) 3000 [N/µm] 260 [N/µm]
Bearing axial stiffness (kb1) 6000 [N/µm] 51 [N/µm]
Torsional stiffness of coupling (kc) 6800 [N·m] 693 [N·m]
Motor inertia (Jm) 13.9×10-5 [kg·m2] 7.8×10-5 [kg·m2]
Carriage mass (mc) 80 [kg] 25 [kg]
Carriage position (xc) 800 [mm] 300 [mm]
viscous damping ratio (ζ) 0.01 0.01
The FEM software ANSYS is employed in this case for modeling and analysis.
Choi: Material Science Forum, Vol. 471 (2004), p.147
Nayfeh: Journal of Dynamic Systems, Measurement, and Control, Vol. 126 (2004), p.388
Choi: Material Science Forum, Vol. 471 (2004), p.147
Nayfeh: Journal of Dynamic Systems, Measurement, and Control, Vol. 126 (2004), p.388
Online since: February 2013
Authors: Ming Yu Li, Jie Zhu, Yan Ju Zhang, Hua Meng
The temperature control system research of PVC latex batching based on PLC
Meng Hua, Li Mingyu, Zhu Jie, Zhang Yanju
HEBEI University of Science and Technology, Shijiazhuang, 050000
573935243@qq.com 454244607@qq.com 227709741@qq.com 691224734@qq.com
Keywords: Batching system; Fuzzy Control; PLC
Abstract.
Introduction The key of PVC latex ingredients lies in accurate weighing of raw materials and stirred tank reactor temperature control. [1] Currently most of the mixing tank have large volume sealed container.
Robust stability of Cohen-Grossberg neural networks via state transmission matrix. 2009,20(1):169-174 [4] Chen shuisheng Meng Qingjian, Based on PLC Temperature PID-fuzzy Control System Design and Simulation, Journal of agricultutal mechanization research,2011 33(6):49-53 [5] Lijiajia Renyouzhi Zhurongwei, Fuzzy· PID temperature control polymerizer, Control and instrument in chemical industry, 2011, 38(6): 707-709
Introduction The key of PVC latex ingredients lies in accurate weighing of raw materials and stirred tank reactor temperature control. [1] Currently most of the mixing tank have large volume sealed container.
Robust stability of Cohen-Grossberg neural networks via state transmission matrix. 2009,20(1):169-174 [4] Chen shuisheng Meng Qingjian, Based on PLC Temperature PID-fuzzy Control System Design and Simulation, Journal of agricultutal mechanization research,2011 33(6):49-53 [5] Lijiajia Renyouzhi Zhurongwei, Fuzzy· PID temperature control polymerizer, Control and instrument in chemical industry, 2011, 38(6): 707-709
Online since: February 2011
Authors: Xiao Zhang Wang, Chao Hui Wang
Acknowledgements
This research was financially supported by the National Natural Science Foundation Project of China “A Research of Blood Micro-processing System Based on MEMS Technology” (No. 50775177) and “The Fundamental Research Funds for the Central Universities”.
Clem: submitted to Journal of Materials Research (2003) [7] J.
Clem: submitted to Journal of Materials Research (2003) [7] J.
Online since: June 2014
Authors: Zulkurnain Abdul-Malek, Mehrdad Mokhatri
Acknowledgment
The authors wish to thank the Ministry of Science, Technology and Innovation (MOSTI), Ministry of Education (MOE), and Universiti Teknologi Malaysia (Research Vote Nos. 4S045, 03H59, and 4F291) for the financial aid.
You-Ping, Surge breakdown properties of soil, in Electrical Insulating Materials, Proceedings of 1998 International Symposium on. 1 (1998) 429-432
Rajab, Investigations of earthing systems under steady-state and transients with FEM and experimental work, International Journal of Electrical Power and Energy Systems. 44 (2013) 758-763
You-Ping, Surge breakdown properties of soil, in Electrical Insulating Materials, Proceedings of 1998 International Symposium on. 1 (1998) 429-432
Rajab, Investigations of earthing systems under steady-state and transients with FEM and experimental work, International Journal of Electrical Power and Energy Systems. 44 (2013) 758-763