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Introduction Ferrites magnetic materials are a kind of very important inorganic functional materials.
It has been used in the various fields such as magnetic materials, coating, ceramic, glass, cosmetic, catalyst, and so on [1-5].
In recent years, nano-ferrite magnetic materials have become the new magnetic materials with the potential application in high-density magnetic recording and biomedicine (e.g. magnetic separations, magnetic resonance imaging (MRI)) because of their small size effect, superparamagnetic and strong magnetic properties [6,7].
Lim: Microchemical Journal Vol. 94 (2010), p. 148 [7] H.
He: Materials Research Bulletin Vol. 36 (2001), p.1369 [11] Y.

More and more organic polymers were used in tissue materials substitute for inorganic polymers, such as hydroxyapatite and teflon, because it can avoid the toxic and immune rejection of materials in the body effectively [1].
Materials and methods Extraction of squid skin collagen The squid skin collagen was extracted by enzymatic degradation.
After removal of insoluble materials in the dialysate, the supernatant was lyophilized to brownish and water soluble powder.
After washing in water the porous materials were desiccated by freeze-drying again.
Journal of Bioactive and Compatible Polymers. 2009, 24: 560 - 576

In this study, the solution of atractylone and liposome membrane materials contained phospholipid and cholesterol was introduced into the supercritical CO2.
The dissolved liposome membrane materials and atractylone was mixed with the phosphate buffer solution (PBS) (pH = 7.2) brought with the syringe pump 4 via the coaxial nozzle 6.
The liposome suspension was collected with a volumetric cylinder, and then filtered with a porous membrane to remove unentrapped liposome membrane materials.
The entrapment efficiency greatly improved as the solubility of liposomal membrane materials raised significantly with increasing x (CH3CH2OH).
Jin: Journal of Ethnopharmacy Vol. 114(2) (2007), p. 212 [3] J.

With the development of complexity science, the field of groundwater study has been injected into new vitality.
Materials and Methods In this paper, monthly monitoring data of groundwater depth of typical monitoring wells from 1997 to 2010 in 15 farms of Jiansanjiang branch were collected and fractal theory was applied to calculate the complexity of groundwater depth sequence in 15 farms.
Researchaing on urban system in Shanxi Province based on fractal theory[J].Journal of systems science, 2008, 16(4): 59-63.
Outlier pattern mining of stock time series with fractal theory[J].Operations Research and Management Science. 2008, 17(5):135-140.
Spatial variability and fractal dimensions of groundwater and natural vegetation in the North foot of Tianshan Mountain [J].Journal of Mountain Science, 2005, 23(1):14-20.

Experimental materials The ore used in this study was collected from the Jinping mine, which located in Yunnan province, China.
The dried material was sampled for copper content analysis.
Journal of China nonferrous metals.61～64(1995)
Nonferrous metal .28～32(1993),p.1 [9] Zhang Qin, Zhang Wenbin: Promoting effects of ammonium sulphate on adsorption of xanthate on malachite.Journal of Kunming university of science and technology.5～8(1997),p.4 [10] Liu Dianwen: Flotation technique of copper oxidized ores.
Yunnan metallurgy.15～18(1999),p.3 [12] Mineral processing teaching and research group of Kunming university of science and technology,Translate.

It also can strengthen ethanol leaching process, improve the utilization rate of materials, reduce pollution, so ultrasound extraction has been widely applied to extract flavonoids.
Xu: Heilongjiang Medical Journal, 2008,21(3):81-83(In Chinese ) [2] B.X.
Zhang: Chinese Journal of Animal Nutrition, 2003,15(2):11-15 (In Chinese ) [3] Y.
Tang: Research on Flavone Compound [M] .Beijing: Science Press, 2009:48-55 (In Chinese ) [7] Y.
Hao: Food Science, 2002,23(8):166-167(In Chinese )

1Fiber Modification of OCC Pulp with Laccase and Natural Mediator System Zhang Si-yang1, a, Pei Ji-cheng1, b, Zhang Xin-lu1, c, Hu Hui-ren1, d, Hong Yi-mei1, 2, e 1 Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China 2 State Key Laboratory of Pulp & Paper Engineering, South China University of Science & Technology, Guangzhou 510650, China a mieyan@163.com, b peijicheng@163.com, cioululu@yeah.net, dhuiren@tust.edu.cn, e hym1125@scut.edu.cn Keywords: Laccase; Natural mediator; Fiber properties; OCC pulp Abstract.
The changes of fiber surfaces, morphological properties of fibers, kappa number and physical properties of OCC pulp with laccase/ natural mediator system treatment were investigated to explore the potential advantages. 1 This research was funded by Open Fund Project (200705) of State Key Lab of Pulp and Paper Engineering of South China University of Technology and Science and Technology Development Plan Project of Tianjin City (04104611).
Experimental Materials The pulp used was OCC and were collected in a mill in TianJin.
Table 2 Effect of laccase/ natural mediator treatment on fiber qualities Treatment methods Length [mm] Width [µm] Coarseness [mg·m-1] Shape [%] Kink [1-1] control 1.069 27.0 136.7 89.5 1.126 laccase 1.076 27.1 135.9 89.6 1.130 Laccase/ gallic acid 1.052 27.0 139.6 89.6 1.146 Laccase / syringal alcohol 1.075 27.0 138.9 89.7 1.158 Laccase / ferulic acid 1.099 26.9 140.8 89.4 1.159 To corroborate the above conclusion, we use the p-coumaric acid as natural mediator and unbleached kraft pulp as material.
with Laccase (Cellulose Science and Technology, China 2006) [7] Jicheng P, Shulan S and Huali W: Strength Properties Enhancement of Unbleached Kraft Pulp through Laccase Catalyzed Oxidation (China pulp and paper, China 2005) [8] Elegir G, Bussini D and Antonsson S: Laccase-initiated cross-linking of lignocellulose fibres using a ultra-filtered lignin isolated from kraft black liquor (Applied Microbiology and Biotechnology, Sweden 2007) [9] Moldes D, Díaz M and Tzanov T: Comparative study of the efficiency of synthetic and natural mediators in laccase-assisted bleaching of eucalyptus kraft pulp (Bioresource Technology, France 2008) [10]Calcaterra A, Galli C and Gentili P: Phenolic compounds as likely natural mediators of laccase: A mechanistic assessment (Journal of Molecular Catalysis B: Enzymatic, Holand 2008) [11]Johannes C, Majcherczyk A: *atural mediators in the oxidation of polycyclic aromatic hydrocarbons by laccase mediator systems (Applied and Environmental

PI Control of Proportional Valve-Cylinder Water Hydraulic System Xin Ba1,a , Xiaohui Luo1,b*, Xufeng Zhao1,c, Yuquan Zhu1,d 1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China, 430074.
The most significance challenges include poor lubricity, cavitations, corrosion and leakage which result in difficulties of structure design and material selection.
Fig.3 Valve opening and overlap A water cylinder with a magnetostrictive displacement sensor built in is designed and manufactured with 304 stainless steel and QAl9-4 Aluminum bronze materials.
Chinese journal of mechanical engineering. 38(2002) 96-100
Part C: Journal of Mechanical Engineering Science 223(2009)2099-2107

China 2Faculty of Graduate, Kunming University of Science & Technology,253 Xue Fu Road, Kunming, 650093, P.R.
The realization process is as followed: For example, if we need to design a roller conveyor corresponding to big size and heavy material.
Acknowledgements This work was financially supported by the Department of Education Science Foundation of Yunnan Province (2012Y541) and the National Natural Science Foundation (51165013).
References [1] Information on http://www.plm.automation.siemens.com/en [2] Davies RH, Breslin M. : submitted to JOURNAL OF APPLIED MICROBIOLOGY 94(2), 191–196 (2003) [3] Studman C. : submitted to JOURNAL OF AGRICULTURAL 70(4), 323–334 (1998) [4] Anderson MJ. : submitted to AUSTRAL ECOLOGY 26(1), 32–46 (2001) [5] Su YX, Sun D, Ren L.
IEEE International Conference on Robotics and Automation (ICRA), Barcelona, SPAIN, APR 18-22, 2005, 202-207 (2005) [6] Cheng JY, Mayes AM, Ross CA. : submitted to NATURE MATERIALS 3(11), 823–828 (2004)

Material of Soil Nails.
Acknowledgements The authors appreciate the financial supports by the Science and technology Program of Guangdong Province (Grant No. 2007B060401021) and the Science and technology Program of Dongguan (Grant No. 2008108101025).
Li: Journal of Northeastern University (Natural Science) Vol. 20(1) (1999), p. 71 (in Chinese) [4] Y.C.
Zhao: Building Science Research of Sichuan Vol. 29(3) (2003), p. 90 (in Chinese) [5] C.W.
Zhou: Journal of Dongguan University of Technology Vol. 17(1) (2010), p. 83 (in Chinese) [6] B.