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Comparison of Environmental Impact Analysis of Two Typical Construction Windows Production Shuping Wang1, Zhihong Wang1, Wenjuan Chen1, a*, Xianzheng Gong1, Yu Liu1 and Liping Ma2 1School of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing, 100124, China 2China Building Material Test & Certification Group Co.
achenwenjuan@bjut.edu.cn Keywords: Windows production, Building materials, LCA, Environmental impact.
The raw materials of insulating glass are float glass and glass spacer PE.
Li, Journal of doors and windows. 11 (2011) 29-32
[10] L.P.Ma, Z.H.Wang, X.Z.Gong, et al., Progress in materials science and engineering(2006) 3-8

A number of researches have been done on the characteristics of coating materials and to examine on how it can be further improved to compete with other types of coating materials.
Lu, in: Study on biodegradable chitosan coating materials of fertilizers of fertilizers.
Science Journal, UBU, 1(1), 43-50 (2010)
Xu in: Starch-based completely biodegradable polymer materials. eXPRESS Polymer Letter ,3(6), 366-375 (2009)
Chemical Engineering Journal 155, 892-898 (2009)

Comparison of the traditional forging shaft parts, the CWR is an advanced, near clean and precise technology of forming shaft parts with many advantages such as high efficiency, saving materials and reducing costs, which has large-scale application in producing shaft parts.
Zhenghuan et al: Journal of Heavy Machinery (2002)
[5] HUANG DZ, ZHOU JJ: Journal of Muto Mobile Science & Technology (1998)
[6] JIA Zhen: Journal of University of Science and Technology Beijing (2009)
Bai: Journal of J.

Journal of Materials Science Vol. 34(1999), p5061
Materials Science and Engineering Vol.
Materials Science and Engineering A Vol. 25(1999), p.25
Journal of Materials Science Vol. 28(1993), p.1515
Journal of Materials Science Vol. 33(1998), p.3491

Acknowledgement The authors would like to thank the financial support from National Natural Science Foundation of China (Grant No.51805238), National Natural Science Foundation of Guangdong Province, China (Grant No.2018A030310124) and Shenzhen Science and Technology Program (Grant No.
Rheology and microstructure of semi-solid aluminum alloys compressed in the drop-forge viscometer, Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science, 33 (2002) 2737-46
Rapid compression of aluminum alloys and its relationship to thixoformability, Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science, 34A (2003) 1545-54
Microstructural coarsening of 7005 aluminum alloy semisolid billets with high solid fraction, Materials Characterization, 90 (2014) 52-61
Globulization mechanism of the primary Al of Al-15Cu alloy during slurry preparation for rheoforming, Metals and Materials International, 11 (2005) 257-62

J.L.C.Carrier,in Defense Sciences Research Centre of Canada, manufactured one type of hard PSD using a material known as a MACOR.The material is a type of glass-ceramic can be carried out as cutting, grinding and drilling,has a bigger compressive strength than tensile strength.
Its soft PSD was made of mesh amide fiber/epoxy material.
PSD mainly has two forms,the soft and the hard.Hard PSD mainly includes ceramics mode,metal piece mode,non-metallic materials support mode.Soft PSD mainly includes radial direction and axial direction.
Review of multi-pulse solid rocket motor[J].Aerodynamic Missile Journal,1993,(01)
Journal of Propulsion Technology,1989,(04)

Material and Methods The goal of the study was to construct an integrated system that encompasses different modules, including pulse generation, timing, skin-electrode interface, and the case design of the unit.
Rasheed, “An artificial blood, electron microscope image, support, principles, benefits, and fusion methods: a review,” in IOP Conference Series: Materials Science and Engineering, vol. 870, no. 1.
HASAN, “Noninvasive acousto-optic glucose sensing system for diabetic covid-19 patients,” Journal of Engineering Science and Technology, vol. 16, 2021
Behm, “The addition of transcutaneous electrical nerve stimulation with roller massage alone or in combination did not increase pain tolerance or range of motion,” Journal of Sports Science & Medicine, vol. 17, no. 4, p. 525, 2018
Hynd, “Electro-analgesia for sheep husbandry practices: a review,” Animal Production Science, vol. 57, no. 5, pp. 801–810, 2016

The Technique of Ion Beam Etching Polishing ChengJun Guo1, a,Ning Pei1,b,DaSen Wang1,c,FengMing Nie1,d, GuangPing Zhang1,d,YuPeng Li1,d 1 The northern institute of materials science and engineering，ningbo，315103,China agcj-228@163.com, bpeining1984@163.com, cwds9059@sina.com, dnfm2006@sina.com, Keyword:Ion beam, Etching,Polishing Abstract: The accelerated gas ions collide with the surface material, the atom or molecule on material surface is removed by momentum transferring.
Depositing a layer low viscosity of the thin film materials on the original surface of the optical, such materials will form a layer thin film on the surface of optical element that is lower than the original.
This method has the low material removal rate.
Therefore, using ion beam deposition modification technology is put forward,its principle is shown in Fig.5: Fig. 5.Ion beam deposition correction technology Fig. 6.The influence of surface roughness of Ion beam density and incident angle Depositing a layer low viscosity of the thin film materials on the original surface of the optical, such materials will form a layer thin film on the surface of optical element that is lower than the original.
(in Chinese) [7] Changjun Jiao; optical mirror ion beam processing material removal mechanism and the basic technology of [D]; National Defense Science and Technology University; 2008.

Effects of SnCl4 concentration on The Properties of Electroless Deposited Ni-Sn-P Coatings Xiran WANG 1,2,a, Wentao WANG1,b,Bin YANG1,c 1School of Materials Science and Engineering, Henan university of science & technology, Luoyang 471023, China; 2Henan key laboratory of non-ferrous metal materials science and processing, Luoyang 471023, China) aemail: xiranwang1978@163.com, bemail: 349782812@qq.com, cemail:Yangbin@163.com Keywords: Electroless plating; Ni-Sn-P alloy; SnCl4; Alloy properties Abstract.
Acknowledgements We thank for supporting from Henan key laboratory of non-ferrous metal materials science and processing and SRTP of Henan University of Science & Technology (No. 2012011).
[J].Journal of Alloys and Compounds,436(2007):p319
Materials Characterization,59(2008):p1324
Journal of materials processing technology,209(2009):p14．

The yield condition is shown with Drucker - Prager criterion for brittle material.
Acknowledgements This paper is sponsored by the National Natural Science Foundation (50978233) and the 11th-five National Science and Technology Supporting Project (2006BAJ04A02) References [1] Li jie，Zhang Qi-yun: Study of Stochastic Damage Constitutive Relationship for Concrete Material .
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Chinese Journal of Rock Mechanics and Engineering,1998,17(6): p.628-633 [3] Yang Wei-zhong.
Constitutive Relationship Model for Masonry Materials in compression.