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The achievements are widely used in Guotun coal mine in Juye coal field with success, which offers a reference for similar engineering.
Engineering background The Guotun coal mine locate in Heze, Shan Dong belongs to Luneng Development Co., Ltd.
The initial pressure reached to 6.5MPa and total water inflow 70 m3/h, serious loss of material under hydrodynamic conditions.
(3) Key technology was established for grouting governance on deep-level tunnel water inflow and relative field tests were conducted, which achieved good effect and has a reference for similar engineering.
Ultrafine grouting material [A].

Key Engineering Materials Vol. 4

CAS Key Lab of Salt Lakes Res. & Chem., Qinghai Inst of Salt Lakes at CAS, 810008, China aCorresponding author, Email: tldeng@tust.edu.cn Key words: boron; boron compounds; new energy and new materials.
Boron-based materials have an attractive property of high melting point, high hardness, antiwear, corrosion resistance, excellent electrical conductivity and anti-metal fusion to be the candidate materials for surface engineering materials.
Surface engineering materials also have the usage of electrofacing, chemical plating, and special chemical heat treatment process.
The future tendency of boron-based surface engineering materials will focus on the enhancement of compression coefficient, optimization of boronizing methods. 1.2 Boron additives.
The attractive physical and mechanical properties of boride cermets materials can be used as the candidate materials in aerospace, military, automotive.

Research on Ellipsoid Drill Point’S Molding Simulation and the Influence Factors of the Key Structure Angles C.
The quantificational relations between the key structure angles of the ellipsoid point and its molding configuration parameters were presented.
Zuo: Key Engineering Materials Vol. 315-316(2006) , p.56 [5] C.
Chen: Key Engineering Materials，Vol.431-432(2010), p.458
Zuo: China mechanical engineering Vol. 14(7) (2003), p.1202 (in Chinese)

Shyan: Bio-Medical Materials and Engineering Vol. 15 (2005), p. 159-177
Shoichet: Chemistry of Materials Vol. 20 (2008), p. 55-60
Shoichet: Nature Materials Vol. 3 (2004), p. 249-253
A. van Blitterswijk: Materials Science & Engineering R-Reports Vol. 59 (2008), p. 38-71
Ribelles: Materials Science & Engineering C-Biomimetic and Supramolecular Systems Vol. 28 (2008), p. 1356-1365

Refined Cotton Centrifugal Dewatering Process and Key Technology Wang Weihui1,2,a, Hu Guangzhong1,2,b and Zhou Min1,2,c 1Sichuan Provincial Key Lab of Process Equipment and Control, Zigong, P.R.
China, 64300 2Sichuan University of science & engineering, Zigong, P.R.
The gap width of the sieve is usually similar to or slightly larger average size with processing materials.
Scraper is the main components of driving materials in the centrifuge, in most cases, scraper is perpendicular to the sieve and the drum, so that in the process of pushing materials scraper has great friction with materials, if their change the form of vertical sieve or drum with a certain angle, then from the mechanical analysis, the friction with the contact surface decrease obviously.
Acknowledgements--The authors wish to thank the Open Fund Program of Process Equipment and Control Engineering Key Laboratory of Sichuan Province（GK200901）for funding this work.

Quality Control of Information Engineering Surveillance Based on Baum-Welch Algorithm Hongzhi Liu a, Li Gao b College of Computer and Information Engineering, Beijing Technology and Business University, 100048, Beijing, China aLeohz@sohu.com, bgaoli_168@yahoo.com.cn Key words: Information Engineering Surveillance; Quality Control; Hidden Markov Model (HMM); Baum-Welch Algorithm Abstract.
Facilities and materials consist of four elements (device type and acceptance check, device installation and performance control, device utilization & operation and materials quality).
Let represent a set of discrete-valued variables for facilities and materials.
Computer Engineering and Applications, 2008, 44 (7) : 136- 138.
Computer Engineering and Applications, 2003, Vol.24.

Numerical analysis of underground engineering on self-developed finite element method Dehai Yu1, a, Annan Jiang1,b and Junxiang Wang1,c 1 Institute of road and bridge engineering, Dalian Maritime University, Dalian, 116026, China aydhhdy1977@163.com, bjiang annan@163.com, cJunxiang_W@163.com Keywords: self-developed finite element, underground engineering, quantitative analysis Abstract.
The self-developed finite element method has many advantages and good prospects to solve problems of underground engineering.
Finite element method can easily deal with nonlinear problems, and simulate the complex geotechnical process in engineering construction, so it is widely used in underground engineering.
The material parameters are shown in Table 1.
The Principles and Applications Back Analysis of Geotechnical Engineering.

China nami_zhu@yahoo.cn Key words: secondary vocational education; science & engineering profession; effective educational model; effective teaching method Abstract.
The proportion of students opened physics course in secondary vocational schools’ science &engineering majors is so low, which has beyond our predictions.
Lots of special training of senior mechanic talent of secondary vocational school of science &engineering major has its necessity, physics as a basic course in science & engineering department, which plays an irreplaceable role in making the students to grasp the professional skills and improve overall quality aspect.
This requests us reform of our current teaching materials, reform our teaching mode and teaching methodology, thoroughly change the traditional education idea, set up the physics course should and must service for the professional’s thought, must learn professional knowledge in the process of teaching, dig deeperly into physics and taught professional correlation.
Only in this way, physics teaching as the basic knowledge can be coruscating vitality, make our science & engineering vocational education level to reach a new stage.

Key Engineering Materials Vol. 11