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With the productivity of β-magnetic chitosan microspheres is above 50%, the magnetic Fe3O4/βCS/HA composite microspheres are expected to become promising multi-functional bone repair materials.
Ltd., Pujiang County, China. βCS made from the skin of maggot has higher viscosity, better activity and lower heavy metal concentration in comparison to that made from shrimp shell and crab shell, so it can be used for material for skeleton repair.
Magnetic composite material is prepared by in situ precipitation method whose matrix is HA and padding is Fe3O4/βCS.
References [1] Qisheng Gu, and Lixia Jiang: Chitosan-based Biomaterials in Clinical Medicine (Second Military Medical University Press,China 2004) [2] Aiqing Wang and Xianda Yu: Chinese Journal of Marine Drugs.
Journal of Colloid and Interface Science.

Next, we select materials for shotcrete, which must meet certain standards (GOST 27006-86).
The highest priority was given to the environmental friendliness of the materials used for the preparation of solutions.
“Materials used for Insulation in Buildings and Energy Savings, Residential Constructions, (2004) 16-18
Scientific and information journal MUIT.
Science and Innovation Technologies, Bishkek, (2016) 301-305

The workpiece material for grinding was a middle carbon steel (mean carbon content 0.45%).
Li: Key Engineering Materials, Vol. 302-305 (2006) No.8, pp.127-130
Guo: The avi~ion journal, Vol. 18 (1997) No. 5
Jiang: Journal of CERAMICS, Vol. 27 (2006) No.4.
Lawrence: Instrumentation Science and Technology, Vol. 33 (2005) No.6, pp 661-671.

This means AUAG, compared with CG, has a higher material removal rate.
Due to the special cutting motion, AUAG has the characteristics such as high material removal rate and wider cutting groove
References [1] Liu Zhenchang: A New Formula for Geometric Length of Contact in Surface Grinding, Journal of Huazhong Technology Institute Vol. 11(1983), p. 109-112, in Chinese
[5] Taghi Tawakoli, Bahman Azarhoushang: Influence of Ultrasonic Vibrations on Dry Grinding of Soft Steel, International Journal of Machine Tools & Manufacture. 48 (2008), p. 1585– 1591
[6] Y.B.Wu: Modeling of Grinding Force in Constant-depth-of-cut Ultrasonically Assisted Grinding, Materials Science Forum Vols. 471-472(2004), p. 101-106

Permeability and porosity are important physical property parameters of rock and soil materials.
Collins: Flow of Fluids through Porous Materials (The Petroleum Publishing Company, Tulsa 1976)
Frangos: Journal of Geophysical Research Vol.73 (1968), p.2225
Kong: Advanced Mechanics of Fluids in Porous Media (Press of University of Science and Technology of China, Hefei 1999) (in Chinese)
Wang: Chinese Journal of Rock Mechanics and Engineering Vol.22 (2003),p.742 (in Chinese).

Numerical simulation of 300mm CZ silicon crystal growth with axial magnetic fields Wenting Xu1,a, Hailing Tu1,b, Qing Chang2,c, Qinghua Xiao2,d,Xiaolin Dai2,e Yunxia Liu2,f, Zongfeng Li1,g, Lin Chang1,h and Weida Liu2,i 1General Research Institute for Non-ferrous Metals, Beijing, 100088, China; 2GRINM Semiconductor Materials Co.Ltd., Beijing, 100088, China axiaohui916@gmail.com, btuhl@mail.grinm.com.cn, cchangqing@gritek.com, dxiaoqinghua@gritek.cn, edaixiaolin@vip.sina.com, fyunxia19850319@163.com, g354335481@qq.com, hclaaaaa@163.com,iliuweidaliuweida@sina.com Keywords: Silicon; crystal growth; 300mm; magnetic field; simulation.
Acknowledgements This work was supported by the Nation Natural Science Foundation of China under NO. 60706001 and National project of NO. 2008zx02401.
Reference [1] E.Dornberger, J.Virbulis, B.Hanna, R.Hoelzl, E.Daub and W.von Ammon: Journal of Crystal Growth Vol.229(2001), p.11 [2] T Abell: Solid State Technology Vol.51(2008), p.22 [3] ITRS Starting Materials Sub-TWG.
Advantages and challenges associated with the introduction of 450mm wafers. (2005) [4] C.W.Lan: Chemical Engineering Science Vol.59(2004), p.1437 [5] Tu Hailing, Xiao Qinghua, Gao Yu, Zhou Qigang, Zhang Guohu and Chang Qing: Rare Metals Vol.26(2007), p521 [6] V.V.Voronkov: Journal of Crystal Growth Vol.59(1982), p623 [7] W.von Ammon, Yu.Gelfgat and L.Gorbunov etc: The 15th RIGA and 6th PAMIR conference on fundamental and applied MHD. (2005) [8] R.Griesse and A.J.Meir: Mathematical and Computer Modelling of Dynamical Systems Vol.15(2009), p.163

The friction and wear properties of the composite materials were investigated with a constant speed (D-SM) tester.
Therefore, the use of asbestos-free friction-resistant materials is required in many countries [1-2].
SEM of the worn surface of the fiber composite materials.
Bruijn JCM:Applied Composite Materials, Vol.7(2000), p.415-420
Chand N, Dwivedi UK:Jounal of Materials Processing Technology, Vol.183(2007),p.155-159 [12].

Curing materials Soil samples The main raw curing material used in the test is soil samples, EPS spherical particles, curing agents and water.
Acknowledgement This work was financially supported by the Science Technology Department of Zhejiang Province (2012C31007).
Chinese Journal of Geotechnical Engineering. 2003, 25(6): 761-763
Journal of Lan zhou University, 2007, 43(1): 19-23
Journal of Building Materials.2010, 13(5): 671-674.

School of Materials Science and Engineering, State Key Laboratory of Hollow Fiber Membrane Materials & Membrane Processing, Tianjin Polytechnic University, Tianjin 300387, China. 2.
Materials and Methods Raw Materials.
Ling: Materials Research and Application, Vol. 4 (2010) No.4, p. 722 (In Chinese)
Sahoo: European Polymer Journal, Vol. 43 (2007), p.3750
Geng: Materials and Design, Vol. 49 (2013), p.279.

Studies on Rheological Property and Miscibility of Lignosulfonate/Polystyrene Blends Jian Zhoua Xuegang Luo * b Xiaoyan Linc College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China a zhoujianhappyme@163.com， *b lxgxq@my-public.sc.cninfo.net c xylinchwei2005@yahoo.com.cn Key words: lignosulfonate, polystyrene, rheological properties, miscibility Abstract.
The results of SEM and IR revealed that miscibility of lignosulfonate/polystyrene blends was improved, favorable for development of degradable lignosulfonate-based materials. 1 Introduction Lignin is amorphous aromatic polymer, available from the paper industry as byproduct of pulping process [1].
They have been traditionally used as a source of energy, but for the last 20 years, intensive efforts have been devoted to incorporating lignin preparations into useful polymeric materials [3].
For the case of difficult recycle techniques and high cost to get purified lignin, lignosulfonate (LS) was used as material to obtain blends which have optimum thermal plasticity and glass transition properties and some useful results.
Journal of Applied Polymer Science, 89(2003) pp. 1266