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The Key Issues to the Switch of the Multi-channel Video Signal Yao Wu1,a, Nan Liu1,b and Xiaojun Ren2,c 1School of Optoelectronics Information and Communication Engineering, Beijing Information Science and Technology University, Beijing 100101, China 2 School of Automation, Beijing Information Science and Technology University, Beijing, China awuyao391@163.com, bliunan@bistu.edu.cn, crxiaojr200@sina.com Keywords: Multi-channel; video switch matrix Abstract.
Besides the key palaces should have decoupling capacitor.
About the author: Yao Wu, Graduate student, engaged in communication engineering and automation research. wuyao391@163.com Nan Liu:associate professor, engaged in the electronic information and communication engineering teaching & research. liunan@bistu.edu.cn Xiaojun Ren: associate professor, engaged in the electronic information and communication engineering teaching & research. xiaojr200@sina.com References [1] James Nightingale, Qi Wang, Christos Grecos.
ELECTRONIC DESIGN ENGINEERING, 2010,18(11), p.113-116
VIDEO ENGINEERING, 2004,5, p.78-79

Tissue engineering scaffolds are relatively new types of medical devices which are often made of quite fragile materials and are highly porous [15] meaning they are susceptible to physical damage during packaging and transportation [11].
The method chosen depends on the structure and materials of the device.
When designing a sterile packaging system for a new device the two key parameters to consider are: (1) the sterilisation method being used and (2) the structure and materials constituting the device.
Journal of Food Engineering, 1979. 44: p. 3. 18.
Chmielewski, Radiation treatment for sterilization of packaging materials.

Study on dynamic stability of large-scale underground cavern group during construction period of hydropower station Weiping NIE 1,2,a, Chong SHI 3,b 1Guangdong Electric Power Design Institute, Guangzhou, 510663, China 2College of Civil and Hydraulic Engineering, Tsinghua University, Beijing 100084, China 3Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China a nwp_jzit@tom.com, b wpnie@foxmail.com Key words: surge tank; surrounding rock stability; dynamic stability; rock-point safety factor; the second lining Abstract: Taking excavation and supporting of surge tank large-scale underground cavern group of Nuozhadu hydropower station as example, the stability of surrounding rock is analyzed systematically, and the best lining scheme is obtained.
According to lining scheme comparison, the scheme that concrete of surge tank pouring to elevation 625.5m is the most economic and reasonable lining scheme for this engineering. 1 Introduction Various excavation and supporting styles will lead to various surrounding rock stress-strain relationships and obtain various stability effects [1].
The civil engineering in China is in vigorous development construction stage, more and more large engineering constructions send huge challenge to geotechnical workers[2].
The lining concrete’s thickness is 1.5m; it uses elastic material simulation; for the mechanical parameters of lining material, see Table 4; for the diagrammatic sketch of the lining of surge tank, see Fig.8.
References [1] XIAO Ming: submitted to Chinese Journal of Geotechnical Engineering(2000) [2] RU Zhong-liang, FENG Xiating, LI Hongdong, et al: submitted to Chinese Journal of Rock Mechanics and Engineering (2006) [3] WANG Haijun, REN Xuhua, ZHANG Jixun: submitted to Journal of China Three Gorges University(Natural Sciences)(2009) [4] SU Xiangzhen, HE Jiangda: submitted to Sichuan Water Conservancy(2006) [5] YE Chao, XIAO Ming, YANG Yaling: submitted to Rock and Soil Mechanics(2008) [6] QIAN Xiangdong，JIAO Ciahong: submitted to Advances in Science and Technology of Water Resources(2007) [7] NIE Weiping, XU Weiya, ZHOU Xianqi: submitted to Chinese Journal of Rock Mechanics and Engineering(2009)

Study on the Standardized Design of Belt Conveyor Based on Synchronous Technology Xuejun Wang1, a, Ping Xu1, b *,Yilin Chi1, c ,Hongbin Liu1, d, Yanfang Ding1, e, Bin Hua1, f 1 Faculty of Mechanical & Electrical Engineering, Kunming University of Science & Technology, No. 727 Jingming South Road, Chenggong University Town, Kunming, 650500,  P.R.
China akmwxj@yahoo.cn, bxuping7207@yahoo.cn, cyilinchi@kmust.edu.cn, dlihhong6696@163.com, edyfcc@163.com, f huabin821@163.com *Corresponding author: kmwxj@yahoo.cn, tel:+008613608866913 Keywords: Particle materials.
It is widely used in mining, metallurgy, chemical industry, casting, building materials industries such as transportation, production line, hydropower station construction site, port and other large sums of bulk cargo transport handling operations.
Scheme design and the design of the key parts is synchronous, using synchronous modeling technology to establish key components of the synchronous model.
Applied Mechanics and Materials.

Shape Finding Analysis of Membrane Structures based on real material property Weiguo Yang a, Xingpo Li b School of Civil Engineering & Architecture，Beijing Jiaotong University，Beijing 100044，China aE-mail: wg_yang@263.net, b09121586@bjtu.edu.cn Keywords: membrane structure; shape finding; nonlinear; real material properties Abstract.
In the solution the key points raised to the desired locations in several steps.
However, the maximum relative location error is only 5%, which is surely allowable in practical engineering design.
Then the key pointes were elevated to the desired coordinated step by step to obtain the membrane shape shown in Fig. 7.
The stresses in the cables were about 85 Mpa, which was acceptable to the structural engineers.

Research on the Design for Sustainability and its Green Building Materials Sun Kezhen College of Architecture and Urban Planning, Beijing University of Civil Engineering and Architecture, Beijing 100044, China email: sunkezhen@bucea.edu.cn Keywords: Design for Sustainability, Effective planning and design, Green Building Material, Ecological Strategy, Abstract.
They can be a tech of integral control, and hold a key problem.
According to the theory of ecosystem and system theory, the working strategy in the architecture design and building materials engineering should be interdisciplinary working and integrated collaboration of designers and building materials engineers.
Some ecological knowledge and disasters prevention technology should be collected and extracted from ecology and restoration ecology, biology and biotechnology, green building materials engineering, environmental engineering, earthquake disaster reduction planning, building fire protection and prevention, structures against lightning etc.
When you think of a green building, recycling and building with recycled-content materials would likely spring to mind as a key characteristic.

And from the trends of industry energy consumption, the consumption of some industries increased year by year, for example Chemistry and Chemical Engineering, Non-Ferrous Metal and Electric Power.
Lack of assessment of the energy efficiency standards.The standards of Jiangxi key energy-consuming industries referenced were almost national or industries standards, while it is lack of local standards [4].
And few enterprises will check its key consumption of technology, production and process, it is difficult for enterprise to improve technology.
Also, on the basis of the industrial energy saving standards and rules of the country and other areas,the standards should include several influencing factors: technology, equipment, raw materials, etc.
Computer Engineering and Design,2009,30(17):4081-4084

Health Evaluation for Durability of Harbor Engineering in South China Based on AHP Zheng Chen1,a, Xi Li1, Jiayi Chen1, Yuliu Wei1, Fei Xu1, Xu Liu1 and Boxiong Tao1 1 Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, School of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi, 530004, China achenzheng@gxu.edu.cn Keywords: AHP, harbor engineering, health evaluation, durability.
Finally, an analysis of harbor engineering in South China verified the feasibility and correctness of the method.
The evaluation results of harbor engineering in South China given in this paper are consistent with the original paper,.
References [1] OH B H, JANG B S: ACI Materials Journal.
Vol. 88 (2008), p. 1384-1395 [3] Michael Henry,Yoshitaka Kato: Engineering and Technology Management.

The key to improve the filtration efficiency of fiber materials is that water pass through the fiber bed, the porous structures of fiber in-depth bed is controlled by the internal construction, fiber arrangement, and fiber zigzag degree.
Limited by the materials, it is very difficulty to reform this features.
Utilization of soft filling materials is a renovation which breaks granular limits.
Extended engineering of Sanhe Waterworks in Taian City.
Water & Wastewater Engineering 2004(5):21-24 [8] Wanjun FU, ZL2007 1 00647 14.9 State Intellecture Property Office of The peoples Republic China Jun.29 2011.

Near Full Density Nano Iron-based Materials by Pulse Current Sintering Yuanyuan LIa , Yan LONGb, Xiaoqiang LIc and Tungwai Leo NGAI d Guangdong Key Laboratory for Advanced Metallic Materials Fabrication and Forming, College of Mechanical Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China a mehjli@scut.edu.cn, bylong@scut.edu.cn, cxqli@scut.edu.cn, ddhni@scut.edu.cn Keywords: Nano iron-based materials; Pulse current electrical sintering; Ball milling.
Besides, the surface oxide of nanopowders retards the sintering process, and impurities are detrimental to the mechanical properties of the sintered materials.
The key to fabricate sintered nanoscale materials is to limit the coarsening of the initial nanocrystalline structure.
Therefore PECS is considered as a potential technology to manufacture bulk nanocrystalline materials with near-full density and clean grain boundaries.
Table 1 Sintering conditions and transverse rupture strength of the sintered materials.