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Introduction Bamboo is one of important forest resources in our country, compared to wood, growing faster, being mature earlier, gaining higher yield, a forestation features the continuous usage, which is an inexhaustible, inexhaustible green materials[1].
The utilization of bamboo went back to ancient times, it is thought as one of the highest efficiency materials in the nature.
[J]Building Science,2005,21(4):92-94 [2] Shen Zhi Rong,Ni Yang,Hu Zhiling.Material Test and Structural Analysis For “Germany and China-Together Cooperation”Bamboo Structure Exhibition Hall[J].Structural Engineers, 2009,25(1):51-54
[J] Journal of Building Structures , 2011,32(7):80-86
Journal of Building Structures, 2010,S2:171-175

• The usefulness of the method should be confirmed by the following additional investigations: - high cycles fatigue tests, - other ferromagnetic materials behaviour study, - components ferromagnetic structures tests
Bai, Defect identification in ferromagnetic steel based on residual magnetic field measurements, Journal of Magnetism and Magnetic Materials 441 (2017) 590-597
International Journal of Applied Electromagnetics and Mechanics 47 (2015) 1023-1038
Juraszek, Residual Magnetic Field Non-destructive Testing of Gantry Cranes Materials 2019, 12(4), 564 Special Issue "Non-destructive Testing of Materials in Civil Engineering; https://doi.org/10.3390/ma12040564 [6] J.
Juraszek, Strain and force measurement in wire guide, Archives of Mining Sciences 63, 3 (2018) 321-334

Al-Hassani, Explosive welding of metalplates, Journal of Materials Processing Technology. 202 (2008) 224-239
Kuzmin, Energy balance during explosive welding, Journal of Materials Processing Technology. 222 (2015) 356-364
Kuz’min, Regularities in bimetal joint formation at explosion welding with simultaneous stamping, Materials Science Forum. 989 (2020) 733-738
Series: Materials Science and Engineering. 969 (2020) 012090
Zhang, Applications and capabilities of explosive forming, Journal of Materials Processing Technology. 125 (2002) 1-25

Therefore, many researchers have tried to prepare compound of HA with other materials to simulate nature bone capability for many years.
But it needs long preparation period to prepare HA-polymer hybrids and run the risk of introducing deleterious materials into body.
Journal of materials science.
Journal of Biomaterials Science, Polymer Edition.
Journal of Non-Crystalline Solids.

Hydrothermal Synthesis and characterization of CeO2 :Eu 3+ Nanopowders Meng Zhoua , *Xin Wangb ,Guijun Jiang c, Qiang Liud , Songtao Gue , Haoquan Liuf Institute of Materials Science and Engineering, Ocean University of China, Qingdao China. 266100 a zhoumengld@163.com, corresponding author:b wangxinhd@ouc.edu.cn, c j_gjun123@163.com, d liuqiang1985@tom.com, e dgst1232000@163.com,fchris1984lhq@163.com Keywords:CeO2:Eu3+ ; hydrothermal method; Photoluminescence; precursor Abstract.
,have attracted great attention owing to their unique optical, electrical, and magnetic properties.[1-4] Rare earth oxides are important parts of rare earth compounds.Compared with the other nanostructured lanthanide oxides, ceria nanocrystals have been widely investigated as important functional materials.Ceria has been extensively used in a wide variety of applications such as solid oxide fuel cells (SOFC) [5] ,catalysis [6] , luminescent materials [7] , gas sensors [8] , polishing materials [9] , and ceramic materials [10] and so on.It has a face centered cubic fluorite (CaF2) crystal structure (a = 5.411Å) and is very stable even at high temperatures.To the best of our knowledge,Ceria has no 4f electrons.As a result,it do not consume energy.
Ceria has strong absorption of ultraviolet (UV) because of the charge transfer between O2− and Ce4+ .Maybe,ceria is a good kind of host.It is wellknown that the performance of Eu3+ is excellent on quantum efficiency and monochromaticity.Therefor,Eu 3+ is one of the most popular ions in rare earth luminescent materials.
,Journal of Non-Crystalline Solids. 283 (2001) 129-136
,Journal of Shantou University(Natural Science). 21(3) (2006) 23-26 [12]Hai Guo, Journal of Solid State Chemistry. 180 (2007) 127-131 [13]WANG Xiao-dong，LIU Xiao-hua*，CHEN Shao-jun，et al., Spectroscopy and Spectral Analysis. 27(11) (2007) 2182-2185 [14]Gao-Ren Li, Dun-Lin Qu *, Laurent Aruraul,et al.

Experimental Materials and Equipment. 42.5 ordinary Portland cement, standard sand, distilled water, Viscoelastic Damping Material Series Qtech[10] (Qtech501, Qingdao Shamu Advanced Material Co., Ltd.), Vibration Data Collector(INV3018,china orient institute of noise&vibration), Vibration Signal Processing software(v10, china orient institute of noise&vibration), PHX-20 spray machine with AP-2 spray gun (PMC instrument).
Acknowledgment This work is financially supported by National Natural Science Foundation of China (51578298).
Feng, Study on the Vibration Performance of a Multi-layer Flat Restrained Damping Structure, International Conference on Transportation Infrastructure and Materials, (2017)
Lu，Optimal Design for Partial Constrained Layer Damping, Journal of Tsinghua University (Science and Technology), 12 (2011) 1877-1881
Li, Research of Damping Property of Viscoelastic Damping Materials 501 and Structure, Development and Application of Materials, 04 (2014) 82-85.

Note that fatigue failure of this superalloy continues to occur after exceeding 107 cycles what is value considered as a fatigue limit for most of steels and hard materials.
Pineau, Metallurgical and Materials Transactions 7 (1977) A 8, 1095-1105
Korsunsky, International Journal of Fatigue 31 (2009) 11/12 1966-1977
Cizeron, Journal of Materials Research, 12 9 (1997) 2298–2316
Yanagisawa, Journal of Zhejiang University-SCIENCE A Applied Physics & Engineering 10 11 (2010) 727-737.

Seepage coefficient of the dam body materials Materials Seepage coefficient (cm/s) Grouting curtain 1.00×10-5 Cushion（2A） 5.56×10-2 Special cushion（2B） 5.15×10-3 Transition material（3A） 1.99×10-1 Main rockfill material （3B） 3.16×10-1 Downstream rockfill material（3C） 1.00×10-1 Concrete slab（F） 1.00×10-8 Composite geomembrane 5.00×10-12 Table 2.
Journal of Hohai University (Natural Science).
Applied Mechanics and Materials.
Journal of Hohai University (Natural Science).
Journal of Hohai University (Natural Science).

However, for highly resistance materials like diamond and CnZnTe, DLTS is not useful due to the small junction capacitance and difficulties in injecting free carriers with a voltage pulse.
[2] Johnson and Noble M, "Measurement of Interface Defect States at Oxidized Silicon Surfaces by Constant‐Capacitance DLTS," Journal of Vacuum Science and Technology, vol 16, Sep 1979, pp.1407-1411, doi:10.1116/1.570211
[3] Xavier Mathew, "Photo-induced Current Transient Spectroscopic Study of the Traps in CdTe," Solar Energy Materials and Solar Cells, vol 76, Mar 2003, pp.225-242, doi:10.1016/S0927-0248(02)00276-3
[5] Johnson and Noble M, "Measurement of Semiconductor–Insulator Interface States by Constant‐Capacitance Deep‐Level Transient Spectroscopy," Journal of Vacuum Science and Technology, vol 21, Jul 1982, pp.303-314, doi:10.1116/1.571768 [6] E.
Milnes,"Deep Impurities in Silicon," Materials Science and Engineering, Vol.2, Nov.1967, pp.173–180, doi: 10.1016/0025-5416(67)90056-0

Experiments Reagent and materials.
Jiang: Nonmetallic materials science.
Urabe: Journal of Porous Materials, Vol. 6 (1999), p. 247 [5] L.J.
Keiurabe: Journal of Wood Science, Vol. 37(1991), p. 158 [7] C.
Keiurabe: Journal of Wood Science, Vol. 38 (1992), p. 256 [8] X.X.