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Online since: September 2011
Authors: Hong Fang Ji, Ling Wen Zhang, Ling Yu Wang, Hui Hui Jin, Yuan Zhang
Materials and methods A.
Materials Air-dried laoying tea produced in the autumn of 2009 was obtained from Guizhou Province, China.
Table 1 Extraction yields of different polar extracts from laoying tea Solvent YieldA(g) Extraction B (%, w/w) Petroleum ether 0.546 ± 0.07 5.46 d Acetic ester 0.903 ± 0.08 9.03 c Methanol 2.287 ± 0.09 22.87 a Water 1.298 ± 0.03 12.98 b A Extracted from aired-dried materials (10.00g).
Baux et al., “Antioxidant activity of oat extracts added to human LDL particles and in free radical trapping assays,” Journal of Cereal Science, vol. 36, pp. 209- 218, 2002
Lee et al., “The phenolic constituents and free radical scavenging activities of Gynura formosana kiamnra,” Journal of the Science of Food and Agriculture, vol. 85, pp. 615- 621, 2005
Online since: March 2010
Authors: Xiao Ping Zhou, Xin Bin Hu, Yi Sheng Xu
The die failure begins from the surface, so, for the purpose of saving energy and source and exerting full potential properties of materials, surface modification treatment on H13 steel die is necessarily been carried out as the key method to increase the service life of die.
The materials synthesis and synthetic materials sediment can be simultaneous, the ceramic phase is synthesized by in-situ synthesis with a fine grain size and the bonding with metal substrate is good[12-16].
Experimental procedure The raw materials for preparing coating include: powders of 30-50 µm Mo、40-60 µm Cr、30-50 µm Ni and 50-70 µm Fe,as well as 30-50 µm FeB.
Acknowledgment This work is supported by Hubei Provincial Natural Scientific Foundation(2007ABA047) and WuHan Science and Technology Bureau(200910311095).
:submitted to Journal of Journal ofMaterials Processing Technology,153-154(2004),p.1089-1096 [4] A.Persson, S.Hogmark and J.BergstrÖm:submitted to Journal of International Journal of Fatigue,Vol.26(2004),p.1095-1107 [5] Gong Yi Kui:submitted to Journal of Surface Technology,Vol.36(6)(2007),p.77-80 [6] Yu Hua Chen,Xiao Chun Wu and Hong Bin Wang:submitted to Journal of Heat Treatment of Metals,Vol.33(6)(2008),p.47-49 [7] Yu Feng Li and Wen Bin Shi:submitted to Journal of Die&Mould Industry,Vol.33(3)(2007), p.65-67 [8] K.Takagi, M.Komai and S.Matsuo:Powder Metallurgy Proceeding of World Congress, PM94,Paris,European Powder Metallurgy Association, 1994.1,p.227-234 [9] K.Takagi, S.Ohira, T.Ide etal: submitted to Journal of Modern Developments in Powder Metallurgy, Vol.16(1985),p.153-166 [10] Xiao Ping Zhou and Lin Hua:submitted to Journal of Journal of Steel and Related Materials,Vol.3(6)(2005),p. 450-452 [11] Xiao Ping Zhou and Xin Bin Hu:submitted to Journal of
Online since: November 2011
Authors: Xu Da Qin, Guo Feng Wang, Chang Liu, Lu Zhang
However, components made with these materials usually work under harsh conditions such as high-temperature, high-speed and high-pressure, so the surface quality requires high performance.
AE is commonly defined as transient elastic waves within a material caused by the release of localized stress energy.
Acknowledgements This study is supported by National Science Foundation of China (50805100) and Natural Science Foundation of Tianjin (08JCYBJC01300).
Journal of Tsinghua University (Science and Technology) Vol.48 (2008), p. 812-815
Journal of Detection & Control Vol.32 (2010), p.43-47
Online since: April 2014
Authors: Xin Lei Fu, Dong Xin Shi, Jiao Jiao Chen
Moreover, environmental responsive materials have often been introduced for optimizing the convenience and efficiency of the materials in application.
Experimental Materials.
Journal of Membrane Science, 293 (2007) 133-141
Journal of Chemistry and Physics, 81 (1984) 6379-6380
International Journal of Biology, 2 (2010) 184-189.
Online since: March 2005
Authors: J.M. Sánchez, J.M. González, Miguel Ángel Sebastián, M.S. Carrilero, Mariano Marcos Bárcena
Microstructural differences of Adhered Material in the Tool Edge and Tool Rake Face.
So, machining processes, as drilling, are continuously improved by using new tools materials, redesigned tool geometries and specially selected cutting parameters.
From the results reported in these works it can be concluded that BUL and BUE formation mechanisms can be different depending mainly on both tool and workpiece materials.
Marcos, The International Journal for Manufacturing Science and Production 4 (2002) 211
Marcos, The International Journal for Manufacturing Science and Production 4 (2002) 181
Online since: June 2012
Authors: Shi Ping Zhang, Bing Hua Zhao
Polypropylene fibers can also reduce cracking, and improve the cracking resistance of concrete materials.
Concrete admixture used was JM–PCA produced by Jiangsu Bote New Materials Co., Ltd.
BK 2011690) and State Key Laboratory of High Performance Civil Engineering Materials ( No. 2010CEM019).
Olek: Materials and Structures Vol. 36 (260) (2003), p. 386–395
Shah: ACI Materials Journal Vol.
Online since: June 2012
Authors: Yu Yan Liu, Lin Chen, Sheng Hu
Experimental Test material slab Q345B including rare earth element.
Journal of Rare Earths,2007,25(2):250-253.
(in Chinese) [4]Liangjun Hu, Chengjia Shang, Xuemin Wang, etc, Journal of University of Science and Technology Beijing, 2004,26(3):260-263.
(in Chinese) [5]Yonglin Kang, Qingjun Chen, Kelu Wang, etc, Transactions of Materials and Heat Treatment, 2005,26(3):96-99.
Key Engineering Materials,1993,84-85:357-378
Online since: August 2014
Authors: Xian Zhi Tian
Application of Information Technology in Interpretation with Note Methods for Exploration-Internalization Xianzhi Tian Wuchang University of Technology,Wuhan,China,430223 Julia030712@163.com Key words information technology;note methods; exploration-internalization mode; electronic materials; interpretation training Abstract With the development of information technology,its application has been found in many different fields.
“Note Method” in Interpretation based on printing materials “Note method” belongs to human element in improving interpretation.
The course is closely connected with printing materials based on personal efforts.
But the whole course is also connected with information technology from listening materials from MP3 and other video equipments.
Chinese Journal of electrization education. 2006 [3] Xianzhi Tian,Advanced Research on Industry, Information System and Material Engineering IV,Advanced Material Research,Volume 1014 ,2014 [4] Kikuchi, K., Sakai, H.
Online since: March 2010
Authors: Hong Jia, Guo Zhong Chai, Cong Da Lu, Xiao Jun Gong
The high material removal rate could be obtained by strong magnetic field at the beginning of the processing, and low surface roughness gained in the weaker magnetic field [9]. (3) simple technique and low cost due to the preparation process of FMA tool is simple and does not require complicated equipment and expensive materials.
KORDONSKI, et al: Journal of intelligent material systems and structures, Vol. 9 (1999), p. 683-689 [2] N.
Yuan, et al: Chinese journal of mechanical engineering, (2007), p. 35-48 [7] B.
Li: Chinese journal of mechanical engineering, (2004), p. 67-70 [11] Y.
Zhao: Journal of Tsinghua University (Science and Technology), (2004), p. 190-193
Online since: June 2011
Authors: Zhong Jin Wang, Ji Guang Li, Hai Lan Gong
RESEARCH ON MULTI-STEPS TUBE-COMPRESSION OF THIN-WALL PARTS WITH VARIABLE DIAMETER BY VISCOUS PRESSURE FORMING Zhong-jin Wang1, a, Ji-guang Li2,b and Hai-lan Gong3,c 1, 2School of Materials Science and Engineering, Harbin Institute of Technology Harbin 150001, China 3Deng Yun College of science and technology KunShan 215300, China awangzj@hit.edu.cn, bjiguangli2008@126.com, c375254230@qq.com Key words: viscous medium pressure forming; tube-compression; variable diameter parts; numerical simulation Abstract.
This forming method can also be used in tube-compression of high strength materials and can realize precise plastic forming of parts with high strength, thin-wall and large diameter variation ratio.
Journal of Materials Processing Technology. 1998, (80-81): 695~699 [8] WANG Zhongjin, WANG Zhongren.
Journal of Plasticity Engineering. 1999, 6(3): 46~48 [9] Z.
Journal of Materials Processing Technology. 2004, 151: 80~87 [10] FANG Kunfang, HUANG Ying.
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