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Materials and Methods 2.1.
Ko, Electrospun nanofibrous structure: a novel scaffold for tissue engineering, Journal of biomedical materials research, 60 (2002) 613-621
Ramakrishna, Polypyrrole‐contained electrospun conductive nanofibrous membranes for cardiac tissue engineering, Journal of biomedical materials research Part A, 99 (2011) 376-385
Kaneto, TFSI-doped polypyrrole actuator with 26% strain, Journal of Materials Chemistry, 14 (2004) 1516-1517
Popov, Carbon nanotubes: properties and application, Materials Science and Engineering: R: Reports, 43 (2004) 61-102

The seepage coefficients of the dam body, dam foundation，core wall and grouting curtain materials are listed in Table 1[6,7].
Seepage coefficient of the dam body materials the layers of foundation Materials Seepage coefficient (cm/s) Materials Seepage coefficient (cm/s) Gravelly Soil core material 1.0×10-5 Concrete structure 1.0×10-7 Contact soil material 1.0×10-6 Grouting curtain 7.5×10-6 Filter materialI 5.0×10-3 Fresh base rock 1.0×10-5 Filter materialII 8.0×10-3 Micro weathered base rock 3.0×10-5 transitional material 3.0×10-2 Weakly weathered base rock（The upper part） 1.0×10-4 Main rockfill material 1.0×10-1 Weakly weathered base rock（The lower part） 1.0×10-4 Downstream secondary rockfill material 8.0×10-2 hard weathered base rock 5.0×10-4 Analysis of seepage field characteristics The peak height of different time of the free surface in core wall under the empty reservoir case are shown in table 2.
Journal of Hohai University (Natural Science).Vol.27(3) (1996), p.22-29 [2] Shen, Z.
Journal of Hohai University (Natural Science).
Journal of Hohai University (Natural Science).Vol:22(5) (1994), p.75-77

Materials Science Forum, 2020. 977: p. 12-17
Materials Science Forum, 2020. 977: p. 18-26
Materials Science Forum, 2019. 950: p. 24-31
Materials Science Forum, 2020. 977: p. 3-11
Series: Materials Science and Engineering 635, 2019

Supported by National Nature Science Foundation of P.R.China(59889101) Research on inner cracks healing of metal materials plays an important role in constituting the recovery theory of materials.
In situ, real-time and dynamic observation of inner cracks healing of materials is an effective way to study mechanism of cracks healing.
[6] Shen Yifu, Zhou Benlian, He Guanhu, et al.: Chinese journal of material research， Vol.10 (1996), p.165 [7] Xiao Yongliang, Guo Yi, Yao Ge, et al.: Chinese journal of material research， Vol.10 (1996), p.271 [8] Wei Dongbin, Han Jingtao, Xie Jianxin, et al.: Materials Review，Vol.13 (1999), p.10 [9] B.
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Case: Journal of Material Science, Vol.34 (1999),p.388

Yarlagadda, "Meeting challenges in welding of aluminum alloys through pulse gas metal arc welding," Journal of Materials Processing Technology, vol. 164, pp. 1106-1112, 2005
Khelfaoui, "Numerical Simulation of Droplet Breakup, Splitting and Sorting in a Microfluidic Device," FDMP-FLUID DYNAMICS & MATERIALS PROCESSING, vol. 11, no. 3, pp. 205-220, 2015
Ighil, "Effects of Boundary Conditions and Operating Parameters on Temperature Distribution during the Friction Stir Welding Process," in IOP Conference Series: Materials Science and Engineering, 2021, vol. 1140, no. 1, p. 012050: IOP Publishing
Chekifi, "Droplet Breakup Regime in a Cross-Junction Device with Lateral Obstacles," Fluid Dynamics & Materials Processing, vol. 15, no. 5, pp. 545-555, 2019
Khelfaoui, "Effect of Geometrical Parameters on Vortex Fluidic Oscillators operating with gases and liquids," Fluid Dynamics & Materials Processing, vol. 14, no. 3, pp. 201-212, 2018.

Isoconversional methodology is a widely-used approach in determining the thermal degradation kinetics of materials with process mechanisms that are too complex to be represented with a simple and flexible model.
Journal of Physical Chemistry, (11), 1195–1211. doi:10.1021/j150473a006 [5] Oyekunle, L.
Journal of Thermal Analysis and Calorimetry, 93(1), 105–109. doi:10.1007/s10973-007-8807-z [7] Mothé, M.
Petroleum Science and Technology, 15(1-2), 37–49. doi:10.1080/10916469708949643 [10] Quintana, H.
Application of Isoconversional Methods for the Processes Occuring in Glassy and Amorphous Materials. http://doi.org/10.1007/978-90-481-3150-1_11

Deevi, Materials Research Bulletin 38 (2003) 957–972
Deevi, Materials Science and Engineering A348 (2003) 227–243
Fergus, Materials Science and Engineering A397 (2005) 271-283
Fergus, Materials Science and Engineering A397 (2005) 271–283
Galerie, Materials at High Temperatures 17 (2000) 231

In this work, zinc nitrate was used as starting materials while hexamethylenetetramine as stabilizier and deionized water as a solvent.
Salifairus Jaafar (UiTM Science Officer), Mrs.
Science Officer) and Mr.
[14] Li F., Li Z., and Jin F.J., Structural and luminescent properties of ZnO nanorods prepared from aqueous solution, Materials Letters 61 (2007) 1876-1880
Growth and characterization of seed layer-free ZnO thin films deposited on porous silicon by hydrothermal method, Electronic Materials Letters 8 (2012) 75-80

Effect of CCWC on the Self-healing Action and the Microstructure of Cement-based materials Guiming WANG1, a, Junxue Zhang1,b and Hui Chen2,c 1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, P.R.
China 2Wuhan Vodolf New Materials Co.
There are two chief kind of materials, one is flexibility waterproofing materials, the other is rigid waterproofing materials[5-7].
These hydrate products by ionic transmission could block up the pores and cracks in cement-based materials, increase the durability of cement-based materials.
Ibrahim etc.: Cement & Concrete Composites, 2002, 24: 127～137 [8] Edvardsen C: ACI Materials Journals, 1999, 96(4): 448～454 [9] Dry C M: Cement and Concrete Research, 2000, 30: 1969～1977 [10] White S R, Sotlos N R, Moore P H, et: Nature, 2001, 409: 794～797

Experimental Materials.
Acknowledgements This research was supported by National science and technology support plan(2011BAE14B05), applied basic research plan of Sichuan Province(2009TY0145) and the special fund of construction of new wall materials in Sichuan Province References [1] John W.
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