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Online since: June 2017
Authors: Xian Zheng Gong, Feng Gao, Bo Xue Sun, Yu Liu, Wen Juan Chen, Zhi Hong Wang, Zuo-Ren Nie
Substance Flow Analysis of Rare Earth Lanthanum in China Wenjuan Chena, Zhihong Wang, Xianzheng Gong, Boxue Sun, Yu Liu, Feng Gao and Zuoren Nie Center of National Materials Life Cycle Assessment, College of Materials Science and Engineering, Beijing University of Technology, No. 100 Pingleyuan, Beijing, China achenwenjuan@bjut.edu.cn Keywords: Substance flow analysis(SFA), Rare earth, Life cycle, Lanthanum.
Static SFA examines the systems of substance flows over short periods and emphasizes the flow of materials and substances, dynamic SFA has been applied to several materials and substances to estimate their flow and stock in designated areas [3,4].
In the use stage, the rare earth products are consumed by metallurgy, glass and ceramic, petrochemical, new materials and other industries.
Acknowledgments This study was supported by National Natural Science Foundation of China (NSFC, Project No. 51304009), Beijing Municipal Science &Technology Commission(Project No.
[14] Susanne Kytzia, Mireille Faist, Peter Baccini, Economically extended—MFA: a material flow approach for a better understanding of food production chain, Journal of Cleaner Production. 12(2004) 877–889
Online since: September 2013
Authors: Gang Zhu
With the development of science and technology, the controller is widely used in various fields, and control performance is also more and more accurate.
Introduction In recent years, along with the development of the control science and technology, controller research is infiltrated into various areas, the controller is everywhere from science to life.
When the control system does not detect water standards, it will automatically carry out purification treatment that can save a lot of manpower and material resources and can timely remove substandard substances, and let substandard substance residue too long in water.
Journal of Nanjing University of aeronautics & astronautics, 2010,30 (4): 78-79
Online since: September 2021
Authors: Ishraq Abd Ulrazzaq Kadhim
Kumar, Natural Fibers and Biopolymers Characterization: A Future Potential Composite Material, Journal of Mechanical Engineering, 68 (2018) 33 -50
Series: Materials Science and Engineering, 671 (2020) 012060 IOP Publishing doi:10.1088/1757-899X/671/1/012060
Babuska, Fabrication of Scaffolds for Bone-Tissue Regeneration, Materials 12(2019) 568; doi:10.3390/ma12040568
Shale Sefadi, Electrospun Alginate Nanofibers Toward Various Applications: A Review” Materials, 13(2020) 934
Farshi Azha, Reinforcing materials for polymeric tissue engineering scaffolds: A review, Journal of Biomedical Materials Research part B: Applied Biomaterials, 107 (2019) 1560-1575
Online since: March 2011
Authors: T.L. Yang, H.J. Yang, Hong Wen Zhang
Table 1 The attribute of materials material parameter Timber Nylon Density (g/cm3) 0.6 1.14 Poisson ratio 0.3 0.35 Young modulus (MPa) 13360 12260 Fail to reduce factor 1 1.1 Analysis model mesh can be divided by the automatic mesh in Mechanical.
The main expiration form that we can get a material from the tired analysis is because of the tired flections of the material and weary away.
Acknowledgment This work was supported by the Natural Science Foundation of China (50865011).
Misra, Alan Brashears: The Journal of Cotton Science, Vol.4 (2000), pp.70-78
[2] Mygdakos EG: Journal of food agriculture & environment, Vol. 7(2009), pp. 214-223
Online since: December 2010
Authors: Y.S. Wang, F.D. Zhu, N.W. Liu
Experimental Materials and Methods Rectangular piece of pure copper with dimensions of 50 x 30 x 20 mm 3 was used as substrate material, the specimen.
The coating materials used in the experiment was a Ni-based powder (nominal composition 75%Ni, 25%Cr, (wt%)).
(3) The surface of remelted layer appears an undulating or wavy form along the laser scanning track, but no cracks are found Acknowledgements The authors would like to express their gratitude for the support from the Science Foundation of Tianjin (Grant No.08JCYBJC09200) and the support from the National Science Foundation of China (Grant No. 60908017).
Tao, et al: Journal of University of Science and Technology Beijing, Vol. 13 (2006) No.4, p.329-332 [5] J.
Liu: Journal of Northeastern University, Vol. 29 (2008) No.11, p.1581-1584 [6] Z.J.
Online since: May 2014
Authors: Yong He, Chun Hua Liu
Genetic algorithm is a search heuristic algorithm to solve the optimization for Computer Science in the field of artificial intelligence, can greatly improve the test speed.
(3) third reading (reading materials from 1~50 optional) Read the examination were randomly selected from materials, reading materials because of words of each article is slightly different, in order to do score standards, the first 400 words of the examination candidates to read materials testing errors do the accumulative calculation
Journal of Higher Correspondence Education (NATURAL SCIENCE EDITION), 2010:4 5 [4] Chen Yuan.
Journal of Higher Correspondence Education (NATURAL SCIENCE EDITION), 2010:4 5
Online since: September 2013
Authors: Xin Zhao, Yan Song Zhao
Introduction Acrylic resin emulsion is a finishing materials commonly used in tanning, but the traditional acrylic emulsion with hot sticky cold brittle, poor weather resistance, resistance to dry and wet rubbing fastness is low, cannot satisfy the requirement of modern tannery.
Conclusions (1) By means of emulsion polymerization of infrared spectrum analysis test, the synthesis of butyl acrylate, methyl methacrylate, styrene, acrylic acid, acrylonitrile polymer and nano materials
Yang: Journal of Sol-Gel Science and Technology Vol. 41 (2007), p. 209 [3] J.J.
Song: Journal of the Society of Leather Technologists and Chemists Vol. 96 (2012), p. 94 [6] Y.Z.
Chen: Leather Science and Engineering Vol. 16 (2006), p. 8
Online since: July 2014
Authors: Li Liu, Yong Ren Wang, Yu Ping Zuo, Dan Liu, Bao Hua Guo
TiO2 is one of the most studied compounds in materials science.
Experimental Material.
Titanium dioxide (TiO2) was purchased from Hangzhou Wanjing new material Co., Ltd.
Ray, Visualisation of Nanoclay Dispersion in Polymer Matrix by High‐Resolution Electron Microscopy Combined with Electron Tomography,Macromolecular Materials and Engineering, 294 (2009), 281-286
Ishak, A study on the effects of organoclay content and compatibilizer addition on the properties of biodegradable poly (butylene succinate) nanocomposites under natural weathering, Journal of Composite Materials, (2014), 1-12.
Online since: January 2011
Authors: Hong Xia Zhang, Yan Lu, Wei Tian, Yan Qing Li, Cheng Yan Zhu
(3) Vacuum plating: making silver which is in an atomic or molecular status deposited and stacked into a nanostructure of metal film on the surface of textile materials in a vacuum state.
Experimental Materials.
Shake flask method is a way that inoculating certain concentration bacterial solution into the sample, increasing the contact between the tested materials and the experimental bacteria by long-playing strong oscillation, we can evaluate the antibacterial effect by comparing the bacterial colonies changes in samples before and after oscillation.
Acknowledgements Financial support for this work was provided by the National Technology Support Project (2007BAE28B03), Science and Technology Development Plan Project of Hangzhou Science and Technology Bureau(20090731P01) and Technological Innovation Project of Hangzhou Municipal Economic Commission(Economy and Technology of Hangzhou [2008]192).
References [1] Ye Hui, Li Dongpin and Xia Zhiling :China Textile Leader (2006), p.54 [2] Qiang qiang, Ni Weihong, Xin wei,et al: Journal of Wuhan University of Science and Technology Vol. 30(2007), p.121 [3] Xin Yanjun, Song Yang, Ji Youmei and Dai Jingjing: Journal of Textile Research Vol. 29(2008), p.127 [4] Wang Xiaocou and Xu Shuiling: Cotton Textile Technology Vol.36(2008), p.126
Online since: August 2009
Authors: Xin Wei, W. Hu, Xiao Zhu Xie, J.G. Lu
Influence of Beam Polarizations on Evaporative Laser Cutting Nonmetallic Materials within High Absorptance X.Z.
Thus, the polarization has little effects on the kerf of nonmetallic materials with high absorptance.
However, few reports dealt with the effects on the cut kerf of nonmetallic materials with high absorptance by linear polarized CO2 lasers till now.
(4) Plasma is not produced in evaporative laser cutting nonmetallic materials, so the inverse bremsstrahlung absorption is neglected.
Copley: Journal of Applied Physics Vol. 59(15) (1986), p. 3555 [2] Olsen.F.