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The principle of cold-rolling spline using precision cold-rolling forming technique is as below: First, install the smooth shaft billet between the pre and post centre of material squeezing device.
l It shows that not all plastic materials can be used for cold-rolling spline from work piece material test.
This mainly depends on the elongation δof material and hardness.
Only can the material whose elongation δis less than 12% and the hardness is less than 250HBS be rolled for spline with high quality and with good economy.
Acknowledgements This work was financially supported by the Natural Science Foundation of Hebei Province(502177).

These systems require expensive materials.
A cheaper system, Cd-Fe redox flow battery, is proposed in the paper, in which almost no expensive materials are needed excluding ion exchange membrane.
Thus, it is evident that the cadmium electrodes can be used as negative active materials for the proposed redox flow cell.
Acknowledgements This work is financed by the National Natural Science Foundation of China (No. 50804050) and the National Basic Research Program (973 Program) of China (2010CB227204).
Journal of Power Sources, 160 (2006), p. 716-732 [2] F.

Insulator defects exist as long as there are internal insulation material defects or there is a small gap.
The valve uses zinc oxide as the main material, and adding a small amount of cobalt oxide, manganese oxide, antimony oxide.
Oil-filled transformer is a type of transformer insulation, which uses oil as an insulating material and filled with transformer oil.
Synthetic insulator is high-voltage composite insulators made ​​of silicone rubber, also known as organic composite insulators, rubber insulators or non-porcelain insulators, which are made of synthetic organic materials of composite insulator, mainly composed of core rod, hardware, umbrella skirt of sheath and adhesive layer.
Journal of Tsinghua University (Science and Technology), 2005,5(10):598-604 [4] SONG Gao, CUI Jing-chun, YUAN Da-lu.

The use of agricultural wastes and natural materials in new technologies is a novel subject.
Work has been carried out on making these fluids completely from bio-based materials so as to make them more eco-friendly, safer and biodegradable.
The use of bio or agro-based materials in modern technology is the new trend for sustainable environment.
Materials and Methods Preparation of WEFGM.
Am J Sci & Ind Res, Science HuB, 2(2011) 1-10

Research on sensitivity of soil acidification in Hebei plain，North China Xiaoyu Li1, Shengxia Fu2, Taizhong Gao3* 1.2.3.Key Laboratory of Biological Technology for Containment Prevention in Hebei Province,School of Environmental Science & Engineering; Hebei University of Science & Technology Shijiazhuang050018,China 1email:qxiaoyuli@163.com, 2email:qshengxiafu@163.com, 3email:taizhonggao@163.com *Corresponding author Keywords: soil acidification; sensitivity of soil acidification; fluvo-aquic soil; cinnamon soil；Hebei Plain Abstract.
Acknowledgements This work was supported by grants from the National Natural Science Foundation of China (No.41373096) and Key Laboratory of Biological Technology for Containment Prevention in Hebei Province, China.
Spatio-temporal variation of soil acidification in hilly red soil croplands [J].Chinese Journal of Eco-Agriculture, Nov. 2008, 16(6): 1348- 1351.In Chinese
Communications in Soil Science and Plant Analysis,2008,39：5-6
Variation of groundwater quality and influence of pesticide and fertilizer on Hebei Plain[J].South-to-North Water Transfers and Water Science & Technology,2009,7（2）:50-54.In Chinese.

Na Grobli 15, 50-421 Wroclaw, Wroclaw University of Technology, PL 2 Diagnostics and Vibro-Acoustics Science Laboratory, ul.
Due to many reasons (mainly sharpness of transported materials) belt covers may be damaged and it may initiate degradation process or straight damages in steel cords.
These include: properties of transported materials (sharp edges of ore lumps), the impact of environmental factors (rain, snow, wide temperature range) and load variations inside belts due to non-stationarity of load stream.
In order to be able to transport materials on the belt, they are designed as a sandwich structure with top and bottom rubber covers and steel cords inside (Fig 1b).
Journal of Bulk Solids Handling 16/3 (1996) 437

Effect of Non-Conventional Aging Treatments on The Tensile Properties and Quality Indices of Hipped Components Made of Cast Aluminum Alloy 354 G Dinesh Babu1, M Nageswara Rao2* 1 LAP-Ross Engineering Limited, Pulivalam village, Banavaram Post-632505, Vellore district, Tamil Nadu, India 2 School of Mechanical and Building Sciences, VIT University, Vellore-632014, Tamil Nadu, India m.nageswararao@vit.ac.in Keywords: Cast aluminum alloy 354, Compressor wheel, Non-conventional aging treatments, Tensile properties, Quality indices Abstract.
The material is then quenched and subjected to aging for a long period at a temperature higher than the ambient, but well below the artificial aging temperature.
(1) where k is material constant and taken as 150 MPa.
References [1] RN Lumley, IJ Polmear and AJ Morton: Development of properties during secondary aging of aluminum alloys, Materials Science Forum, Vol.426-432 (2003), p.303 [2] RN Lumley, AJ Morton, RG O’Donnell and IJ Polmear: New aluminum alloy heat treatment improves properties, reduces process costs Ind Heat, Vol. 71 (2004), p.31 [3] RN Lumley, AJ Morton, RG O’Donnell and IJ Polmear: New heat treatments for age-hardenable aluminum alloys, Heat Treating Progress, Vol. 5 (2005), p.23 [4] RN Lumley, IJ Polmear and AJ Morton: Development of mechanical properties during secondary aging in aluminum alloys, Materials Science and Technology, Vol. 21 (2005), p.1025 [5] FJ Tavitas-Medrano, AMA Mohamed, JE Gruzleski, FH Samuel and Doty HW: Precipitation hardening in cast Al-Si-Cu-Mg alloys, J Mater Sci, Vol.45 (2010), p. 641 [6] H Möller, G Govender and WE Stumpf: Natural and artificial aging response of semisolid metal processed Al-Si-Mg alloy A356, Int.
Cast Metal Res., Vol.20 (2007), p.340 [7] E Sjölander and S Seifeddine: The heat treatment of Al-Si-Cu-Mg casting alloys, Journal of Materials Processing Technology, Vol.210 (2010), p.1249 [8] ND Alexopoulos: Definition of quality in cast aluminum alloys and its characterization with appropriate indices, JMEPEG, Vol.15 (2006), p.59 [9] ND Alexopoulos: Generation of quality maps to support material selection by exploiting the quality indices concept of cast aluminum alloys, Mater Des, Vol.28 (2007), p. 534 [10] M Drouzy, S Jacob and M Richard: Interpretation of tensile results by means of quality index and probable yield strength, AFS Int Cast Metals J, Vol.5 (1980), p. 43 [11] CH Caceres: A rationale for the quality index of Al-Si-Mg casting alloys, Int J Cast Metals Res, Vol.10, (1998), p.293 [12] C Caceres, M Makhoulf, D Apelian and L Wang: Quality index chart for different alloys and temperatures: a case study on aluminum die casting alloys J light Metals, Vol.1 (2001), p.51

The substrate material was 1Cr-11Ni-2W-2Mo-V stainless steel.
In Eq.1, Es and νs are materials constants, hs can be measured with micrometer and hi obtained through weighing and calculating according to the following equation, ( ) ( ) [ ] flost iii hmmmmh ⋅−−= − 0 1 / , (2) where hf is the original thickness of the film in SEM image, m0 the original weight of the one side coated specimen, mlost the weight of the specimen after the film totally stripped, mi-1and mi the weight of the specimen before and after stripping a layer at time i, respectively.
Therefore, the crack initiation was delayed and fatigue characteristic of the coated materials was improved [2, 3, 6, 7].
Terranova: International Journal of Fatigue Vol. 27 (2005), p. 1541 [7] Y.
Suresh: Thin film materials: stress, defect formation, and surface evolution (Cambridge University Press, England 2003)

It is suitable to perform experiments on magnetism and high resolution large d-spacing materials using wavelengths between 2.4 and 6 Å.
Such an study was already published in the former volume of this series [34] and in other journals [35, 36] so that it will only be mentioned briefly here.
Barman, Advanced Materials Research 52, 109 (2008) [25] L.
Mondelli, ILL Annual report Scientific Highlights, Materials, 3-9 (2007) [36] J.
To be published on Journal of Physics: Conference Series.

., Pengyi WEI Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, United States email: pengyiwei5101@sina.com Keywords: Sulfur; Iron-base alloys; Analytical method; Summary Abstract.
[4] Kunio Takada, Tetsuya Ashino, Yukitoshi Morimoto, Hisao Yasuhara, Mayuko Kurosaki and Kenji Abiko, Determination of Trace Amounts of Sulfur in High-Purity Iron by Infrared Absorption after Combustion： Removal of Sulfur Blank, Materials Transactions, JIM, Vol,41,No. 1(2000)pp. 53 to 56
[10] Jianhuan Wei, Huafeng Sun, Shengjie Yang, the cycle measurement of sulfur blank value with the CS-444 infrared ray carbon sulfur analyzer, Advanced Materials Research, Vals.399-401(2012)pp2173-2176
[11] Cai Jijie, Huang Zongping, Yang Lihui．Chinese Journal of Spectroscopy Laboratory[J], 2003, 20(2)：221—223
[25] Yang Jiahe．Journal of Sanming University[J], 1998, 15(1)：48-49