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The following measures can be taken according to the reasons of plug. (1)The concentration of brine should be strictly controlled and the best salinity is between 290g/L and 300 g/L. (2)Operators should fulfill the operation procedure seriously and can not unauthorized absent from work and record the process parameters. (3)The pipes should be protected by heat insulation material from water distribution station to the well head when the temperature is below the zero in winter. (4)The internal surface of pipes and sluice valve should be smooth and the number of bent joints should be reduced as less as possible.
Acknowledgements This research was supported by the Nation Basic Research Program of China(2009CB724606), Chinese Science Foundation (51074198), Science Fund for Creative Research Groups of the National Natural Science Foundation of China (50621403), Chongqing Natural Science Foundation (No.2010BB6044).
Chinese Journal of Rock Mechanics and Engineering, 2009, 28(10): 2068-2073
Chinese Journal of Rock Mechanics and Engineering, 2007, 26(1): 2678-2686
Journal of Liaoning Technical University, 2006, 25：114-116

Experimental research on combustion and emission performance for micro combustor of MTPV system with stratified porous media Jian Wu,Bo Li,Bin Xu,Jia-xuan Miao (College of Vehicle and Power Engineering;Henan University of Science and Technology, Luo yang,471003,China) Key word: Micro-combustor;Stratified porous media;Wall temperature;Emission performance Abstract: As the critical component of the system, micro-combustor requires a high and uniform temperature distribution along the wall to meet demands for the band gap of the PV cells.
The burner uses the structure of cylindrical pipe, which choose the Al2O3 material.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (56976028).
[2] Wentao Rao (Sichuan Metallurgy (2010)) [3] En-yu Wang (Journal of Combustion Science and Technology (2004)) [4] Hai Jiang Experiment and Numerical Simulation of Porous Medium Combustion (2008) in Chinese [5] En-yu Wang,Le-ming Cheng（Journal of Zhejiang University（Engineering Science）（2002）） [6] Information on http://d.g.wanfangdata.com.cn/Conference_6845018.aspx [7] Sheng Wang , Shu-dong Wang（Journal of Fuel Chemistry and Technology（2006））

Materials and Methods Materials.
This network is characteristic of freeze-dried materials and described as sponge-like structure.
During the freezing process, ice crystals nucleate was from the solution and grow along the lines of thermal gradient; the subsequent lyophilization generates a porous materials [9].
After six months studies with serial euthanasia, pathological examination of the tissue around the materials show completely absorbing around 3 weeks, with normal repairing tissue and no inflammatory or adverse tissue reactions.
Karlin:The Spine Journal Vol. 12 (2012), p. e1-e6.

Factors related to function and sustainability of products such as material, manufacturability, component life and so on are defined as modular drivers.
Material.
In Eq.7, k is the number of modules of product, ki is kinds of materials of module i, is the ratio of each kind of material j in the ith module, is the EL of the utilization of material j, pi is kinds of components of each module i, sq is kinds of processes of component q, is the ratio of each kind of process l in the qth component, is the EL of process l, is the ratio of each kind of component p in the ith module, wr is the EL of the recycle of component p, wd is the EL of the disposal of component p. 3 Case Study A reduction gear is used as an example to show the effectiveness of the proposed methodology.
Acknowledgements This research is funded by the National Natural Science Foundation of China (#70971030).
References [1] Jayal, A.D., et al., in: Sustainable manufacturing: Modeling and optimization challenges at the product, process and system levels, CIRP Journal of Manufacturing Science, 2010, 2(3): 1-10 [2] Sánchez, J., J.

Research Progress on the Aluminum Alloy with High Thermal Conductivity Ya-ying HUANG1,a , Zhi-liu HU1,b* , Jun-jun WANG1,c 1School of Material Science and Engineering, Guangxi University, Nan Ning 530004, China.
The Research and Development of New Thermal Conductivity Materials Foreign countries also produce a composite material with high thermal conductivity , low coefficient of thermal expansion and light weight by combining high thermal conductivity strengthened material (focus on graphite, carbon fiber and artificial diamond powder) and metal (Al, Cu, Mg),which has been ahead of the current heat sink materials like Al, Cu and Ag.
In addition,combing other materials with high thermal conductivity to produce new high thermal conductivity aluminum alloy material is a new research direction.
Metal functional materials, 11(2004)23-25
Journal of nonferrous metals Chinese. 10(2000)334-339.

Lee: Materials Science and Engineering vol. 507, (2009). pp. 66-73 [3] T.
Lee: Materials Science and Engineering vol.
Lee: Journal of the Korean Institute of Metals and Materials vol. 46, Nov (2008). pp. 707-716 [7] Y.
NPL Materials Centre, 2002
Antoni: Materials Science Forum vol. 369-372, (2001). pp. 353-360 [19] M.

Tanaka 1,2 1 Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan, KIKUCHI.Masanori@nims.go.jp, TANAKA.Junzo@nims.go.jp 2 CREST, Japan Science and Technology Corp., Kawaguchi Center Building, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan 3 Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan, itoso.gene@tmd.ac.jp, hnm.mech@tmd.ac.jp, koyamamech@tmd.ac.jp, takakudamech@tmd.ac.jp, shinomiya.orth@tmd.ac.jp Keywords: HAp/Collagen composites, Self-Organization, Fibrillogenesis, Bone remodeling Abstract.
Materials and Method Calcium hydroxide, orthophosphoric acid (Reagent grade, Wako Pure Chemicals Ind.) and atelocollagen were used as starting materials.
The concentration and amount of the starting materials (Table 1) were determined for HAp/Col mass ratio to be 80/20; the total mass was 10g.
Concentration and amount of starting materials.
This "bio-integrated materials" could be useful for implant materials and also expected to good materials for tissue engineering.

With low heat input, laser welding can produce more aesthetic joints with lower distortion and deformation, and reduced need for rework with relatively high quality, especially in materials that are sensitive to heat input (4).
Figure 1: Configuration of the welding samples The chemical compositions of the base and filler materials are shown in Table 1 and Table 2 respectively.
Goliński, Ductility and formability of ultrafine-grained 5754 aluminium alloy under various strain rates and temperatures, Materials Science and Engineering: A, Volume 848, 2022, 143375, ISSN 0921-5093, https://doi.org/10.1016/j.msea.2022.143375
Pandey, Kovács András, Rohit Khargotra, Tej Singh, Difficulties and redressal in joining of aluminium alloys by GMA and GTA welding: a review, Journal of Materials Research and Technology, Volume 23, 2023, Pages 2576-2586, ISSN 2238-7854, https://doi.org/10.1016/j.jmrt.2023.01.183
[9] UNE-EN ISO 17639:2013, “Destructive tests on welds in metallic materials - Macroscopic and microscopic examination of welds”

Because of this typical materials have high strength, light weight, resistance to damage, and many other characteristics.
However, Al2O3 ceramics materials also have high resistance to shear stress, low tensile stress, high elastic modulus and brittleness.
Fig.1 High-speed precision micro-milling machine tool The test material is Al2O3 ceramics which purity is more than 95%.
This paper is supported by the Nation Science Foundation (Grant No.51305043) and Jilin province key scientific and technological project (Grant No.20140204066GX).
International Journal of Machine Tools & Manufacture. 2006, 46(3/4), p.313-332 [2] Z.

In the process of using work-pieces, the destruction accidents occur mostly due to the influence of residual stress, besides the material and structural strength of the work-piece[3].
These results study the effect of annealing process on mechanical properties of welded joint. 2 Test Materials and Procedures 2.1 Test materials The test material is Q355NH weathering steel (12 mm thickness), whose chemical composition and mechanical properties are listed in table 1 and 2 respectively.
Acknowledgments This work was financially supported by Colleges and universities in Hebei province science and technology research youth fund (Hebei Province Department of Education Fund) No.QN2018168.
Chinese Journal of Mechanical Engineering, 2007, 43(2): 234-237
Materials Science& Engineering A, 2013, 561(8): 136-144.