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Allowable Height Difference between Adjacent Monoliths with Spherical Surface Key Groove in Transverse Joints Danni Luoa, Yu Hu b and Qingbin Li c State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China aluodn10@mails.tsinghua.edu.cn, byu-hu@mail.tsinghua.edu.cn, cqingbinli@mail.tsinghua.edu.cn Keywords: hydraulic structure; transverse joints; key groove; height difference; high arch dam.
Introduction During the concrete pouring, monoliths rise unevenly due to the restriction factors such as orifices poring and construction material preparation.
Therefore, the allowable height difference h should be determined according to the engineering practice.
Acknowledgements This study was financially supported by National Basic Research Program of China (2013CB035902), Research Project of State Key Laboratory of Hydroscience and Engineering of Tsinghua University (2011-KY-4) and the National Natural Science Foundation of China (51279087).
Li, The Proceedings of 17th Nationwide Academic Conference on Structural Engineering, II (2008) 505-511

In highway pavement engineering, mineral aggregate gradation is a key consideration in mixture design.
Acknowledgement This material is based in part upon work supported by Guangxi Key Lab of Road Structure and Materials.
Geotechnical Engineering State of the Art and Practice: 187-220
Journal of Engineering Mechanics, 2009. 135(4): p. 324-333
Journal of Computing in Civil Engineering, 2009. 23(6): p. 340-347.

Analysis of key technology of NC turning machining Chunxia Tian Department of Automotive Engineering, Dalian vocational and technical college, Dalian, Liaoning, China E-mail: tianchunxia@sina.com Key words: CNC turning; Processing technology; Key technology analysis.
Analysis of part material.
Analysis of parts provided by the blank material mechanical properties and heat treatment, casting quality and machined parts blank material hardness, whether there is a white, sand, porosity, the degree of difficulty to judge its processing, so as to provide basis for the selection of tool materials and cutting amount.
The selected parts materials should be economically reasonable, good cutting performance, to meet the performance requirements.
Electrical engineering technology.2004.8 [6]Xinwei Xu, Qingmin Wang.

The Total Design of Reverse Engineering CAM Module Based on Pro/NC Jun Fan1, a 1Chengdu Technology University,Chengdu City,SiChuan,China afjun1980@163.com Keywords: Reverse Engineering;CAM; numerical control;NC program generator Abstract.Reverse engineering technology is an important part of advanced manufacturing technology.
The CAM module is one of the key modules of integrated reverse engineering CAD/CAM system, its research and development has the important theory significance and project application value for the successful implementation of integrated reverse engineering CAD/CAM system.
Because of reverse engineering copying real samples in a very short time, so it is the important basis for implementation of concurrent engineering and supporting technology[1].
CAM module is one of the key modules of reverse engineering CMM/CAD/CAM integrated system.
Reverse engineering CAM module structure based on Pro/NC This paper developed an integrated reverse engineering system CAM module on the basis of Pro/NC.

The chemical engineering technology linked chemical engineering professional knowledge to engineering practice is an important compulsory course.
Core knowledge units include basic organic chemical engineering raw materials, the thermal cracking of hydrocarbons, the conversion of aromatic hydrocarbon, catalytic hydrogenation, and so on.
The main objective of classroom teaching is to grasp the production process theory, the theory structure system must be understood and the key theories must be given prominence in the classroom teaching.
In order to increase the utilization rate of raw materials, improve product quality, reduce pollution, energy consumption and production cost, chemical engineering enterprises usually adopt the improved new process, which often based on the mature process in traditional textbooks.
They can visually describe the structure of equipments and materials flow, anatomize in-depth the process flow, enhance students’ perceptual knowledge for chemical engineering production process.

Fracture Design of Metallic Matrix Crack for Bi-materials Youtang Lia , Changfeng Yanb College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China a liyt@lut.cn, byangcf@mail.lut.cn Keywords: Fracture, Matrix Crack, Metallic materials, Dynamics Abstract.
The result lays a theoretic and applied foundation for the practical engineering application of metallic matrix crack for bi-materials.
In the application of crack theory, how to make crack quickly is a key point that meets demand high efficient production in engineering.
The result lays a theoretic and applied foundation for the practical engineering application of metallic matrix crack between bi-materials.
R43~R46 [4] Y.T.Li, Y.B.Wei and Y.F.Hou: Key Eng.

Seven typical engineering ceramic materials are analyzed using the method, the objective and comprehensive results are gained.
Introduction Grindability is a key index for ceramic materials grinding.
The evaluation results of workability of ceramic materials are objective, stable and reasonable using this method, it can be applied as a valid refrence to design ceramic materials and select machining parameters of ceramic materials.
[5] Yu A B, Chen Y, Jia DW: Key Engineering Materials.
Zhong , Xin Li Tian: Materials Science.

Lab. of Surface Engineering of Artificial Organs of Sichuan, Key Lab. of Advanced Materials Technology of Education Ministry of China, Southwest Jiaotong University, Chengdu 610031, China 2.
Institute of Surface Modification, National Biomaterials Engineering Research Center, China 3.
Collage of Materials Engineering, Chongqing University, Chongqing, China a email: nhuang@263.net Key Words: Biomaterials, Surface Engineering, Blood compatibility Abstract: In the present paper, the scientific basis, technique approaches, the present status and the development trends of surface modification for blood contacting materials are discussed briefly.
Scientific basis and approaches of surface modification for blood contacting materials In recent several decades researches on the blood compatibility of biomaterials have revealed that the surface characteristics of a material is the key point to affect the interaction between blood and the material surface.
Huang et al, Functional Materials ( in Chinese), in press

Tissue engineering includes 3 aspects: seed cells, scaffold materials and cytokines.
The research progress of cartilage repair in athletic injury The source of seed cells and Vector properties are 2 key factors in cartilage tissue engineering techniques.
The Scaffold materials for tissue engineering is Survival and metabolism and soil of Seed cells, its Shape function directly affect cell morphology and function, so the scaffold materials has been one of the core contents of tissue engineering in athletic injury.
Materials Science and Engineering: R: Reports, Volume 59, Issues 1–6, 29 February 2008, Pages 1-37
Materials Science and Engineering: A, Volume 557, 15 November 2012, Pages 45-53

Research on Remote Optimization System for Key Parts of Large Scale Plastic Mold Meng Chen1,2,a , Caowei Chen1,b , Longshan Wang2,c, Yaping Lu1,d and Lei Zhang2,e 1The Institute of Mechanical Engineering, Ningbo University of Technology, China 2The Institute of Mechanical Science and Engineering, Jilin University, China achenmeng666666@163.com, bchcw_003@163.com, cLswang@jlu.edu.cn, dluyaping@nbut.cn ezhanglei0440118@163.com Keywords: Remote optimization, Plastic mold, ASP.NET, ANSYS Abstract.
A remote finite element optimization system for key parts of large scale plastic mold is described.
The system can query material properties of the mold, such as modulus of elasticity and Poisson's ratio from the material parameters query system.
systems, Journal of computer Information Science in Engineering , ASME, 2001 [10] Special issue of Computer-Aided Design Journal Shape Similarity Detection and Search, for CAD/CAE Applications.
Computer-Aided Design Volume : 37，Issue : 11, September 15, 2005 [11] Nagashima,Toshio, Development of a CAE system based on the node-by-node meshless method, Computer Methods in Applied Mechanics and Engineering, 2000.