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Introduction Nowadays there are four main kinds of materials: steel, wood, plastic and cement.
Because of wood has natural degradation and recycling characteristics, it is considered as the most promising development materials in the 21st century.
Science press，2006（In Chinese）
Journal of Anhui agricultural university, 2002, 29 (4): 330~332（In Chinese）
Journal of henna forestry science and technology. 2004, (12):17-18（In Chinese）.

Tang: Journal of Materials Processing Technology Vol. 71 (1997), pp. 64-70 [4] V.
Alten: Journal of Materials Processing Technology Vol. 98 (2000), pp. 90-96 [5] G.
Tang: Journal of Materials Processing Technology Vol. 150 (2004), pp. 56-61 [6] N.
Lishiny: Journal of Materials Processing Technology Vol. 113 (2001), pp. 34-39 [7] J.
Tang: Journal of Materials Processing Technology Vol. 98 (2000), pp. 205-211

This research used easy materials that you can make a lot.
Fluid mechanical principles could be excellent learning materials for children to explore the use of teaching aids.
Materials and Methods Honduras Mahogany seeds is a single wing seeds, but you can rotate the same way as bamboo dragonfly falling. he experimental tests have found that its structure can reduce terminal velocity and increase the sowing range of features.
The model uses simple materials easy to teach children how to use it.
Dickinson, Leading-Edge Vortices Elevate Lift of Autorotating Plant Seeds, Science vol. 324, 1438, 2009

Microwave devices often use ferrite materials because they have high specific resistance, excellent magnetic flexibility, and performance [2].
Saffar-teluri, “Journal of Magnetism and Magnetic Materials nanoparticles with high photocatalytic activity,” Journal of Magnetism and Magnetic Materials, vol. 441, pp. 98–104, 2017, doi: 10.1016/j.jmmm.2017.05.044
Journals, A.
Sarkar, “Materials Today : Proceedings Sol-gel assisted synthesis and tuning of structural , photoluminescence , magnetic and multiferroic properties by annealing temperature in nanostructured zinc ferrite,” Materials Today: Proceedings, no. xxxx, 2021, doi: 10.1016/j.matpr.2021.05.215
Olabi, “The Introduction of Cobalt Ferrite Nanoparticles as a Solution for Magnetostrictive Applications,” in Reference Module in Materials Science and Materials Engineering, Elsevier, 2017, p.

Analysis of wetland value assessment methods Han Mei1,a Wang Xiaoyan1,b 1College of Population, Resources and Environment, Shandong Normal University, Jinan 250014, China a hanmei568568@126.com,b wangxiaoyan106@163.com Keywords: wetland; wetland functions; value; assessment methods Abstract: Wetland science research has earned great attentions and wetland assessment is an important part of wetland science characterized by complex context and various assessment methods.
Ecosystem service functions of wetland are divided into three types in this paper, material production function, environmental function and social and cultural function, including biology production, hydrological regulation, erosion control, water and atmosphere purification, biodiversity maintenance, providing habitat, leisure travel, educational research and so on.
Acknowledgements This work was financially supported by the Shandong science and technology planning project called Study on wetland degradation and ecological compensation standard based on the RS in the Yellow River Delta.
Research Review on Wetland Ecosystem Health[J].Chinese Journal of Ecology, 2001,20(3):31-36

Materials Transaction, 2013; 44(5), 973–980
Journal of Materials Research, 2014; 7, 359–366
Journal of Engineering Science and Technology., 1(1), 31–40
International Journal of Material Science Engineering, 2012; 1: 7 – 16
Materials Science and Metallurgy Engineering, 2014; 2: 26 – 30

Toosi University of Technology, Tehran, Iran 2Department of Material Sciences and Engineering, K.
Armstrong, "Plastic strain localization in metals: origins and consequences," Progress in Materials Science, vol. 59, pp. 1-160, 2014
Konstantinidis, "Yielding and tensile behavior of nanocrystalline copper," Materials Science and Engineering A, vol. 503, pp. 198-201, 2009
Cao, "Analysis of microbending of cuzn37 brass foils based on strain gradient hardening models," Journal of Materials Processing Technology, vol. 212, pp. 653-661, 2012
Mao, "Length scale effect on mechanical behavior due to strain gradient plasticity," Materials Science and Engineering A, vol. 303, pp. 241-249, 2001

It has been found that the new BG/HA bio-composite materials have high bioactivity properties.
Greenlee, Bonding mechanisms at the interface of ceramic prosthetic materials.
Pe´rez-Amor, Hydroxyapatite coatings: a comparative study between plasma-spray and pulsed laser deposition techniques, Journal of Material Science: Materials in Medicine 1997;8: 861–865
Ababou,Microstructure and related mechanical properties of hot pressed hydroxyapatite ceramics, Journal of Material Science: Materials in Medicine 1994;5: 563–568
Titanium alloys in total joint replacementFa materials science perspective.

Lightweight Ceramic Materials with Increased Strength Based on Microporous Silicates V.A.
Young's modulus (of elasticity) of gaize ceramics: the influence of the type of modifying glass The results of tests of raw materials and ceramics are given in Table 3 and Table 4.
Kotlyar, Gaize – promising raw material for wall ceramics, J.Building materials. 2 (2007) 31-33
Beregovoi, Porous glass-crystal materials for thermal protection of building and structures, ARPN Journal of Engineering and Applied Sciences. 11, 19 (2016) 11709-1712
Key Engineering Materials. 736 (2017) 166-170

Study on the Preparation and Micro Structure of the Mg Containing Porous HA with Ultra-Fine Grain Xingyi LI1,2,a，Xiangcai MENG2，Guoquan LIU 1，Shidan YUAN 2,b 1 College of Materials Science and Engineering, Beijing University of Science and Technology,Beijing, China 100083 2 College of Materials Science and Engineering, Jiamusi University,Heilongjiang, China 154007 a jmsdxlxy@163.com, biambetter23@163.com Key words：：：： Chemical Precipitation, Hydroxyapatite, Magnesium Abstract.
Magnesium was ideal pore-creator for preparation of porous materials.
Conclusion The magnesium is ideal pore-creator for the preparation of porous materials.
Materials Science and Engineering, 2006(26):1434-1438 [3] Sarama Bhattacharjee.
Proceedings of the fifth national material science and image technology meeting. 2004(in chinese)