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CaF2 nano-power was prepared by direct precipitation methods with Ca(NO3)2 and KF as raw materials.
Applied Physics Materials Science & Processing, 2005, 81, (3):645-649 [3] P.
Optical Materials, 2008, (022): 1 ~ 4
Optical Materials, 2007, (29):1263 ~ 1270
Journal of Functional Materials, 2006, (37):1108 ~ 1109.

Introduction In recent years, with the development and construction of the harbor, the dumping of dredged materials increased sharply.
Journal of Shanghai Fisheries University, 2000, 9(1): 65～68
Journal of Fishery Sciences of China, 1999, 6(5): 29～32
China Environmental Science, 1997, 17(6): 550～553
Journal of Fishery Sciences of China, 1999, 6(5): 20～23

It can fabricate thin film materials with controlled structure and have attracted the attention of researchers.
Acknowledgements: This work was supported by the National Natural Science Foundation of China (51102162).
Brett, Journal of Vacuum Science & Technology, 16 (1998) 1115
Arnell, Journal of Vacuum Science & Technology, 16 (1998) 2858
Kanzari, Journal of Materials Science, 40 (2005) 5751

The coating materials used in the experiment was a Ni-based powder, Ni45 powder, with the characters of well fluidity, particle size 48-106 μm (140-320 mesh).
Materials Copper matrix Remelt layer Plasma sprayed layer Grinded volume 3.892 0.262 0.917 Figure 5.
Tao: Journal of University of Science and Technology Beijing Vol.13 (2006), p. 329
Liu: Journal of Northeastern University.
Zhu: Journal of Shenyang Arch. and Civ.

Introduction Lately, composite materials based on vegetable waste has been of particular interest to research [1-15].
Materials and Methods As the initial materials for the tape production, we used HDPE 273-83 granulates produced by Kazanorgsintez PJSC and the developed five-components composite (RF patent 2569544 dated July 11, 2014).
Guo, Synergistic compatibilization and reinforcement of HDPE/wood flour composites, Journal of Applied Polymer Science. 133 (2015)
Vairavel, Processing and testing parameters of PLA reinforced with natural plant fiber composite materials, International Journal of Mechanical and Production Engineering Research and Development. 9 (2019) 933-940
Radaikina, Technology development for the production of thermoplastic composites with agricultural fillers by compounding method on co-directional twin screw extruder, IOP Conference Series: Materials Science and Engineering. 873 (2020) 012022

Introduction After the Wenchuan earthquake, China faster to implement the project of Wenchuan earthquake fault zone scientific drilling project(WFSD), which is the Ministry of Science, "Eleventh Five-Year" national science and technology projects.
Fig.3 BHA Mises stress Fig.4 BHA safe factor Fig.5 BHA damage Safety factor is defined as the ratio of the parts or failure stress and stress of the material used in the design.
Chinese Journal of Oil Drilling & Production Technology,2004,26(1):19-22.
Chinese Journal of Petroleum Machinery, 2006, 34(8): 15-18.
Materials & Design.Vol (30),9,3615-3621(2009)

Materials and methods Materials.
Advanced Materials. 12 (23), (2000) 1841-1846
Journal of Applied Polymer Science. (2012) [4] H.
Journal of Applied Polymer Science. (2012) [6] W.
Journal of Applied Polymer Science. 125 (1), (2012) 745-754

Journal of Hazardous Materials, 2009, 171(1-3): 588 [3] Liping Ma, Ping Ning, Yuanyuan Zhang, Xueqian Wang.
Journal of Rare Earths, 2010, 28(2): 205 [5] Qiongfen Yu, Ping Ning, Honghong Yi, Xiaolong Tang, Ming LI, Liping Yang.
Chinese Journal of Chemical Engineering, 2008, 16(5): 715 [7] Ping Ning, Hans-Jörg Bart, Liping Ma, Xueqian Wang.
Engineering Science, 2004, 2(4): 20 [8] Ping Ning, Xueqian Wang, Hans-Jörg Bart, Senlin Tian, Yong Zhang, Xueqian Wang.
Journal of Cleaner Production, 2011, 19(13): 1547 [9] Zhonghua Wang, Ming Jiang, Ping Ning, Gang Xie.

All the mixed materials was cooked to boiling and needed to let it cold before added with fresh milk, collecting cow’s rumen and yeast.
Once again, the combination of material was mixed well and need to let it doing the fermentation process for about 12 to 24 hours.
(Report), Journal of Water Resource and Protection (JWARP) [10] Teo, K.
M. (2011), Preliminary biological screening of microbes isolate from cow dung in Kampar, Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia.
Arvind Kumar (2011), Evaluation of Effective Microorganism (EM) for treatment of domestic sewage, Journal of Experimental Sciences Vol. 2, Issue 7, Pages 30-32 [2011] [16] National Small Flows Clearinghouse. (1997), Basic wastewater characteristics. 

Experimental Materials.
Results and Discussion The effect of curing conditions on the mortar strength of FBC ash-cement clinker system FBC ash is essentially one of pozzolanic activity materials, having higher pozzolanic activity relative to other coal ashes, usually used as admixture in concrete.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No.51142012 and No.50802082), the Programs for Science and Technology Development of Shandong Province, China (Grant No.2011GGX10705 and No.2010GCG20319) and the Natural Science Foundation of Shandong Province, China (Grant No.ZR2010EM058).
[6] Peiyu Yan and Wenyan Yang: Journal of Building Materials (in Chinese) Vol. 1(2001), p. 39
[7] Huizhu Ma and Zongqi Li: Building Science (in Chinese) Vol. 11(2007), p. 105.