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K., International Journal of Heat and Mass Transfer, Vol. 50 (2007), p. 2905 [9] Yeh, C.
M., International Journal of Heat and Mass Transfer, Vol. 52 (2009), p. 4426 [10] Ren, C., International Journal of Heat and Mass Transfer, Vol. 54 (2011), p. 3987 [11] Wu, S.
M : submitted to Journal of Heat and Mass Transfer (2012) [12] Tracey, V.
H., Advanced Materials Research, Vol. 488 (2012), p. 321 [14] Wu, S.
C., World Academy of Science, Engineering and Technology, Vol. 62 (2012), p. 631 [15] Kline, S.

The desktop printer materials has low melting point, the platform when heated to 80℃-90 ℃, the material will soften, and removed easily.
At present, the lack of related standards, in domestic there has the ability to produce 3D printing materials companies rarely, quality is uneven, especially metal materials mainly rely on import with higher price.
Therefore, the current one of the urgent task is to build a 3D printing materials related standard, increase investment of 3D printing materials research and development and industrialization of technical and financial support, improve the quality of the materials used in domestic printing, so as to promote the development of printing industry in China.
Journal of Baoji University of Arts and Sciences(Natural Science Edition). 4 (2013) 64-70
Bulletin of Chinese Academy of Sciences. 6 (2012) 658-669

Other than these advantages, the RP technologies still lack full usage due to its compatibility with the materials.
New materials with superior characteristics can be developed to overcome this but this requires in-depth knowledge about the behavior of materials subjected to various operating conditions.
Rapid Prototyping Journal, 20(2) (2014) 164-178
Journal of Nanostructure in Chemistry, 3(1) (2013) 83
CIRP Journal of Manufacturing Science and Technology 1 (2011) 48–54

Conditions of the hardening were the same for both analyzed materials.
Experiment Materials.
Journal of Materials Research and Technology, 9 (4), 2020, p. 8163–8171
Materials and Manufacturing Processes, 12 (1), 1997, p. 137–151
Journal of Materials Research and Technology, 9 (2), 2020, p. 2037–2043

Materials and Methods This project was the experiment method by designed and constructed new one crucible furnace which used LPG gas the capacity of furnace is 40 kilograms for aluminium melting then melted aluminium to find out the melting rate and fuel consumption for cost comparison between diesel oil using and LPG gas using.
Refernces [1] Kim, C – H. and kwon, T.H. (2001) Materials and Manufrcturing Processes 16(6), 789-801
[2] Gunasegaram, D.R., Finnin, B.R. and Polika, F.B. (2007) Materials Science and Technology 23(7), 847-856
[3] Dargusch, M.S., Dour, G., Schauer, N., Dinnis, C.M. and Savege, G. (2006) Journal of Materials Processing Technology 180, 37-43
Dahle, A.k. and Lohne, O. (2005) Material Science and Engineering.

Several core shapes and types of core material have been applied to the construction of sandwich structure.
AIAA 200220502, 40th Aerospace Sciences Meeting & Exhibit, 14217, January 2002
[2] HAN Jie-cai; CHEN Gui-qing; MENG Song-he; LI Xiao-hai, New-typed ARMOR thermal protection systems[J]．Journal of Astronautics，2004，(03)：350-353
Thermal protection system materials and costs for future reusable launch vehicles .Journal of Spacecraft and Rockets, 2001, 38(2) :294~296
[6] Shi Liping Li Yao He Xiaodong, Research on Metal Thermal Protection System, Aerospace Materials & Technology, 2005, (3):21-23.

A Novel Elman Algorithm Based on Sectional Least Squares Wenxue Tan 1, a,Meisen Pan2,b and Xiaorong Xu 3,c 1 College of Computer Science and Technology, Hunan University of Arts and Science;Changde 2 School of Info-physics and Geomatics Engineering,Central South University, Chang-sha,410083 3 College of Computer Science and Technology, Hunan University of Arts and Science,415000 a papertwx@163.com, b mspan@163.com,c xiaorongxu@sina.com Keywords: AI;SLS; Neural Network; Intelligent computation; SLS-Elman; PCA Abstract.
Acknowledgment This work is partially funded by Hunan Natural Science Foundation, with Grant No. 10JJ5063 and School Foundation of Hunan University of Arts and Science, with No.JJZD1002.
He is an Associate Professor engaging in teaching in Computer Science and Technology.
Intelligent process quality control system for networked manufacturing, Journal of Mechanical Engineering,Vol.46(2010), p.186
[4] Ding Shan,Yin Yixin, Huang Wei,et al, Temperature identification of electrical heating furnace based on Elman network combined with improved PSO, Applied Mechanics and Materials, Vol.20(2010),p.82

Training material is not only including virtual prototype and virtual maintenance simulation, virtual maintenance training special materials, but also text, video, audio, etc.
Journal of System Simulation, 2009, 21 (21): 6683-6688 (in Chinese)
Journal of System Simulation, 2005, 17(11): 2633-2637(in Chinese)
Science of Technology, 2010, 28(24): 71-74(in Chinese)
Journal of Ordnance Engineering College, 2008, 20(3): 4-7(in Chinese) [8] Dan LI, Sixin YANG, Yuhang YANG.

Experimental The commercial LC9 alloy was employed as the raw material for this study.
Acknowledgements This work was financially supported by the project of Jiangxi Provincial Department of Science and Technology (2010EHB01800, 2009BGB03000), project of Jiangxi Provincial Department of Education (GJJ11521, GJJ11496), and project of National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology (GF201001007).
References [1] G.M.Lu, J.Dong and J.Z.Cui: The Chinese Journal of Nonferrous Metals.
Vol.27(2007), p.448-450 (In Chinese) [7] H.W.Hu, K.H.Chen and L.P.Huang: Special Casting & Nonferrous Alloys. 4(2004), p.11-13 (In Chinese) [8] H.Puga, S.Costa and J.Barbosa: Journal of Materials Processing Technology.
Journal of Materials Technology.

Effects of Chinese medicine residue vermicompost application on pakchoi yield and nutrient content Yuwei Wang1, Dongwei Yang2, Yihang Duan1, Lijuan Yang1, Yaojing Wang1,2* 1College of Land and Environmental science, Shenyang Agricultural University, Liaoning, 110866, China 2College of Science, Shenyang Agricultural University, Liaoning, 110866, China superwyw322@163.com, *Corresponding author: wyjsau@163.com Keywords: Chinese medicine residue; earthworm; vermicompost; pakchoi Abstract: In this study, we conducted a series of pot experiments to examine the effect of Chinese medicine residue vermicompost on yield and nutrient content of pakchoi.
Materials and methods Materials Vermicompost: The Chinese herbal medicine residues were prepared by aqueous extraction and fermented for 30 days before adding the earthworms (Eisenia foetida).
Journal of Environmental Science and Engineering, 2011(5), p.574－577 [5] Wang Y-J, Wang B-Y, Liu M-D.
Chinese Journal of Applied Ecology, 2013, p. 2651-2657 [10] Zhang C-L, Dai J, Zhou B, et al.
Journal of South China Agricultural University 2013,34(2), p. 137-143