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And they arrange the energy and the materials (biological and abiotic part) on the earth assembly into a temporary form.
It uses the renewable or recycled materials and resources which can avoid discharging the environmental pollutants to the outside.
However, in terms of cost, it is no longer a disadvantage to change the creative concept and use advanced building materials and technological methods to achieve refined design.
Beijing: China Environmental Science Press. 1995.
Architectural Journal. 1997, Feb [4] Wu Liangyong.

Introduction Silicon carbide is only one wide-bandgap material creating SiO2 layer by thermal oxidation.
Samples were processed in pairs, one used as a monitor for material characterization (#Xm) and sample used in MOS device fabrication (#X).
Acknowledgement This work was supported by Polish National Science Center under project no.
C., "Density of interface states, electron traps, and hole traps as a function of the nitrogen density in SiO2 on SiC", Journal of Applied Physics, Volume 105, Issue 12, pp. 124506-124506-11 (2009) [3].

Piliptsou2,d and A.V.Rogachev2,e 1 International Chinese-Belarusian scientific laboratory on vacuum-plasma technology, Nanjing University of Science and Technology, str.
According to the Hall–Petch relationship, the hardness of materials increases with decreasing grain size.
On the other hand, softening of materials caused by grain boundary sliding is mainly attributed to the large amount of defects in the grain boundaries.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51373077), Intergovernmental Cooperation Projects in Science and Technology of the Ministry of Science and Technology of PRC (CB11-9, CB11-10), Science and Technology Developing item of Nanjing city (201301039).
Bruley: Journal of applied physics Vol. 71 (1992), p. 5675 [7] M.C.

According to professor Learn sate speaking, Learning is a Perpetual process that "with the material world through communication and dialogue (the formation of the world), with the help of communication and dialogue with others (the formation of Friends), with communication and dialogue with its own (the formation of self), Trinity achieve ’the reconstruction of meaning and relations’.
Therefore, investigate its connotation and essence, ecological study is the learner through the material world; social life-world experience with the learner achieved the interrelationship between the material flow, knowledge flow and information flow of communication and conversion.
Acknowledgements The article is sponsored by the annual research project of humanities and social science of ministry of education（number:12YJCZH044） References [1]George siemens ,learning ecology ,communities and networks [EB/OL] .http:// elearnspace.org. 2003-7-11 [2] Driscoll M.
[4] (Japan) Sato science, Zhong Qiquan, translated: "the happy learning: Toward to a Dialogue ", Beijing: Education Science Press, 2004.
(In Chinese) [6] WangYongRui, HanYan: "future learning organization of the effective learning mechanism structure journal, future and development", 2010, (1):10-15.

This is determined on the basis of material properties, firm size and the useful life of units
Geng: Transfers and Water Science & Technology.
C.Yi, in: Safety Science and Technology, Chemical Industry Press, Beijing, 2004
Journal of Loss Prevention in the Process Industries, Vol.24(2011), p.219-226
Song: Environmental Science and Technology.

Introduction The increasing demand in lowering maintenance costs in engineering structures made of composite materials (e.g. aeronautics) contributes to the growing development of structural health monitoring systems.
For example, a method can give good results but samples must be small, or it does not work with all the materials, or it is difficult to use with high rates of production in industry, etc.
FE modeling of composites is more complex than of isotropic materials, particularly due to the presence of complex stiffness and variety of failure modes.
Composite Structures, 66: 627-637, 2004 [18] Seth S.K., Spearing S.M., Constantinos S., Damage detection in composite materials using Lamb wave methods.
Smart Materials and Structures, 11(2): 269-278, 2002 [19] Philippidis T.P., Assimakopoulou T.T, Using acoustic emission to assess shear strength degradation in FRP composites due to constant and variable amplitude fatigue loading.

Various metals, plastics and composite materials can be used.
It can be used in various types of materials such as polymers, ceramics, and composites [9-10].
Meghwal, Additive Manufacturing, International Journal for Research in Applied Science & Engineering Technology 10 (VI) (June 2022), doi.org/10.22214/ijraset.2022.44072
Applied Sciences. 2020; 10(5):1563, doi.org/10.3390/app10051563
[7] Fixter J.: In-Situ Microstructure Optimisation of Wire and Arc Additive Manufactured (WAAM) Aerospace Aluminium Alloys, School of Materials, doctoral thesis, 2019

During electrochemical micromachining (EMM) , materials are removed in the form of ions based on the anodic dissolution mechanism, so it should be a promising technique for micromachining.
Introduction Cutting stress and heat affected layer hardly ever occurs on the surface of workpieces during Electrochemical micromachining (EMM), and moreover materials are removed or deposited through ions transferring based on the anodic dissolution mechanism, therefore, EMM should be a promising micromachining technique in the order of micron or nanometer in the short future, which are now being studied widely at home and abroad.
Acknowledgements This Project is supported by The National Natural Science Fund (Grant No.51375208), The technology innovation team of Jiamusi University(Cxtdpy-2016-04) and The Science Fund of Jiamusi University(L2010-107).
Allongue, Electrochemical micromachining, Science. 289(2000) 98-101
[5] Kurita T, Chikamori K, Kubot a S, A study of three-dimensional shape machining with an ECμM system, International Journal of Machine Tools & Manufacture. 46(2006) 1311-1318.

Laser light plays also an important role in processing of hard and difficult to machine materials.
These properties enable performing precise operations on difficult to cut materials in low cost and time consuming way.
It is used for a wide range of materials as metals, ceramics or composite materials.
Absorption of radiation in the materials results in various effects like heating, melting, vaporization [5].
Harimkar, Laser Fabrication and Machining of Materials, Springer Science + Bussiness Media, LLC, 2008 [4] W.

Material Properties.
Hazlehurst, Wang and Stanford [4] suggested that effective moduli of elasticity of a square pore materials made of CoCrMo alloy can be derived from stress-strain curve of components with different porosity using assumptions that all the components regardless of their porosity have similar cross-sectional area.
Feng, Stress analysis in dental prosthesis, Computational Materials Science, 49 (2010) 126-133
Stanford, Evaluation of the stiffness characteristics of square pore CoCrMo cellular structures manufactured using laser melting technology for potential orthopaedic applications, Materials & Design, 51 (2013) 949-955
Christensen, Mechanical evaluation of porous titanium (Ti6Al4V) structures with electron beam melting (EBM), Journal of the Mechanical Behavior of Biomedical Materials, 3 (2010) 249-259