Search results

Is electronic materials really helpful for the development of learners’ autonomous abilities?
The questions of the questionnaire focused on the learners’ use of electronic materials, the influence of electronic materials on learners’ foreign language learning and the learners’ attitude towards electronic materials.
And the functions and impacts of electronic materials based on information system on learners’ autonomous autonomous abilities of learning are mainly listed as follows: First, electronic materials are just a kind of useful learning tool.
[J] International Journal of Lexicography.2008 [3] Kobayashi,c.
Chinese Journal of electrization education. 2006 [5] Pang Weiguo.

Indian Journal of Science and Technology 9 (2016) 1-7
Yamagata, The science and technology of materials in automotive engines, Elsevier, 2005
Journal of Materials and Environmental Science 6 (2015) 1369-1376
Materials Science and Engineering: A 764 (2019)
Materials Science Forum, September (2015) 485-488. https://doi.org/10.4028/www.scientific.net/msf.830-831.485 [27] O.S.I.

Material Sciences Vol. 57 (2012), p. 1492–1704
Bang: ACI Materials Journal Vol. 98 (2001), p. 3-9
Materials Vol.22 (2008), p. 875–885
Qian: Journal of Shanghai Jiaotong University (Science) Vol. 17 (2012), p. 350-355
Reddy: ACI Materials Journal Vol. 109 (2012b), p. 157-164

Historic Retrospection and Present status of Severe Plastic Deformation in China Jing Tao Wang School of Materials Science and Engineering, Nanjing University of Science and Technology Nanjing 210094, P.R.
SPD is becoming a hotspot in materials field in China.
Introduction It is well recognized that the interrelationship among the four components of composition, processing, structure and property, composed the nucleus of the discipline of materials science and engineering.
Recently, however, world wide great progress and achievement in research and development concerning severe plastic deformation and related materials, claims the dominant role of high strain in the control of materials microstructure, and attracts ever-increasing sight of the materials experts world wide [1].
Lowe: Ultrafine Grained Materials III, TMS (The Minerals, Metals & Materials Society, 2004) [2] Jingtao Wang, Suk-Bong Kang, and Hyoung-Wook Kim, Metall.

It is avoided to model for composite materials damage mechanism.
Damage detection in composite structures using piezoelectric materials[J].
Smart Materials and Structures, 1994, (3): 318~328
AIAA Journal, 1997, (35): 1552~1527
Journal of Sound and Vibration, 1993, 167(2): 347~37

Study on the Abrasive Effecting Factors of the Removal Rate during Dual-Lapping Sapphire Wafer ZHANG Kehua1, 2, a , WEN Donghui 1, b , and YUAN Julong 1, c 1 The MOE Key Laboratory of Mechanical Manufacture and Automation, Zhejiang University of Technology, Hangzhou, 310032, China 2 Institute of Machinery Equipment and Measurement & Control Technology, Zhejiang Normal University, JinHua, 321004, China a mature@126.com, bwdh_74@163.com, cjlyuan@zjut.edu.cn Keywords: Sapphire Wafer, Dual-Lapping, Materials Removal Ratio, Surface uniformity Abstract: Dual-lapping was a process to planarize the surface of the sapphire wafer, the nature of surface&subsurface damage and the surface uniformity was depended on the material removal mode and materials removal ratio.
Material removal mode was studied in this paper, and the model of material removal was set up too.
This research provided valuable insights into the material removal ratio and the dependence of lapping-induced damage on dual-lapping conditions, the asymmetry of abrasive granularity brought on the different materials removal mode and the surface asymmetry.
CHINA ILLUMINATING ENGINEERING JOURNAL, 14(4):23-31 (2003) [4] HAN Peide,DUAN Xiaofeng,SUN Jialong, ZHANG Z,WANG Zhanguo.: Difference Between Ga� Films Grown on Two Opposite Oriented c-Al2O3 Wafers[J],CHINESE JOURNAL OF SEMICONDUCTORS,22(8):1030-1034(2001) [5] Y.S.
Trans. of the ASME, Journal of Manufacturing Science and Engineering, 122(2):413-419 (2000)

Two kind of cutting tool body materials including Al alloys and 40CrMo tool steels were used for simulation.
J-C constitutive model was used for this paper and the constants of the cutter body materials are given in Table 1.
Table 1 J-C parameters for materials used in FEM simulation Materials A (MPa) B (MPa) n C m Testing conditions Strain rates (s-1) Al alloys 490 207 0.344 0.005 1.8 SHPB 600-3500 40CrMo tool steels 690 292 0.31 0.025 1.09 Torsion tests 451-464 Analysis step.
International Journal of Machine tools & manufacturing. 2001, Vol. 41: 749-761
Journal of Materials Processing Technology. 1996, Vol. 61: 219–224.

Wang: Environmental science and management (2008)
Liu.: submitted to Journal of Building Engineering (2022)
Hauptmann: submitted to International journal of heat and mass transfer (1996)
Sekino: submitted to Journal of wood science (2016)
Brito: submitted to Journal of Building Engineering (2020)

Methods Documents used in this study were based on the online database of the Science Citation Index-Expanded (SCI-E) retrieved from the ISI Web of Science, Philadelphia, PA, USA.
In the first type of journals, Chinese scholars published 4 papers respectively in Genome Research, Science, and Nature, all of which have impact factor greater than 10.
Specifically, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences was involved in 9 of these papers.
Y., Probe of relationships between the enhancing of science research level and cooperation of science and technology according to SCI publications for university, Science & Technology Progress and Policy, 2005, 2 : 132-134
Y., Statistics on papers published in science, nature and its series by Chinese research institutions in 2008, China Basic Science, 2009, 3 : 48-50

Optical differentiation method of materials based on the modeling of scattering characteristics Shixue Xu1, a, Lingfei Xu2,b, Yanru Chen3,c 1,2,3Department of Optical Engineering, Nanjing University of Science and Technology, Nanjing, P.R.China 210094 aete_corner@yahoo.com.cn, bjsj900@hotmail.com, cyrchen2002@yahoo.com.cn Keywords: Scattering, material differentiation, modeling Abstract.
We also try to modeling the characteristics of materials scattered light in order to recognize or distinguish given materials in detection.
The reflectivity of materials determines the intensity of scattered light.
Our research indicates that the optical differentiation of materials method will have more feasibility if we take more information from the scattered light of materials’ surfaces.
James, “Change of polarization of light beams on propagation in free space,” Journal of Optical Society of America A, 11, 1641-1643 (1994)