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Antioxidant activity of silk fibroin peptide hydrolyzed by pancreatin Zhen Zhu1,2,a,Hua Yin2,3,Yan An1,2,b* 1College of Public Health of medical department of Soochow University, Suzhou, China,215123 2National Engineering Laboratory for Modern Silk of Soochow University, Suzhou, China,215123 3College of Textile and Clothing Engineering, Soochow University, Suzhou , China,215006 a zzyuchen120@foxmail.com bdranyan@126.com *Corresponding author: Yan An Keywords: silk fibroin peptide, resistance to oxidation, amino-nitrogen, superoxide radical, hydroxyl radicals, hemolysis inhibition rate Abstract.
Material and methods Preparation of silk fibroin solution Silk degumming The 10g silk cut, put bath ratio of 1:50 (m/w) degumming 0.5% sodium carbonate solution, the degumming time 2h, degummed silk samples by picric acid carmine to test whether the degumming completely.
Acknowledgments This work was supported in part by the Research Fund for the Doctoral Program of Higher Education of China (RFDP), (20123201110012); the Graduate innovation project of Jiangsu Province (ZY32007613); the Pre-Research of National Natural Science Foundation of China (NSFC) research grant (Q3126982); the Projects of key International Cooperation and Exchanges NSFC (81020108028) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

System for Compensating the Rigidity of the Hydrostatic Guideways of the Column Saddle Subassembly of the Boring and Milling Machines PASCU Mariusa, STAN Gheorgheb, ANDRIOAIA Dragoșc and MIHĂILĂ Luciand ”Vasile Alecsandri” University of Bacau, Departament of Industrial Engineering, Calea MarasestI, No. 157, 600115 Bacau, Romania apascu_marius83@yahoo.com, bghstan@ub.ro, cdragos.andrioaia@ub.ro, dlucian_mihaila@yahoo.com Keywords: guideways, pockets, accuracy, compensation, thickness.
Similarly, there are the supports D and E composed of two hydrostatic pockets each, 17, 20, 18 and 19, representing the wedges (keys) of the main guide way F.
The contact surface between the two parts (live surface) is made by ink-spotting the pocket and removing a layer of material.
Freier, Comparison of performance of compensated and uncompensated hydrostatic guidance systems, Journal of Engineering for Industry. (2007) 154-165

Grounding Grids Fault Diagnosis Based on PCA-BP Neural Network Xianfeng Liu a, Minfang Peng b College of Electrical and Information Engineering,Hunan University,Changsha,China aemail：zdhliuxianfeng@163.com，bemail：pengminfang@hnu.edu.cn Key words: PCA(principal component analysis);neural network; grounding grids; fault diagnosis Abstract.
First,study the problem existing in substation design, installation, maintenance and put forward the measures which should be taken;Second, mechanism of grounding grids corrosion was discussed and the factors effecting corrosion of grounding grids were analyzed.Many experts further studyed various corrosion resistance material and analysed some characteristics of anti-corrosion methods;Third,detecting the corrosion of grounding grids and finishing the inspection of grounding grids corrosion diagnosis.
High Voltage Engineering, 2008, 34(7)：1389-1394

Melt Spinnable Blend Polymers of Polycarbosilane and Polysiloxane for Synthesis of Silicon Carbide Micro Tube Structures Kenichiro Kita1,a, Masaki Narisawa1,a, Hiroshi Mabuchi1,a and Masayoshi Itoh2,b 1 Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-Cho, Naka-Ku, Sakai, Osaka 599-8531, Japan 2 Fukushima National College of Technology, Taira, Iwaki, Fukushima 970-8034, Japan a nar@mtr.osakafu-u.ac.jp, bm-itoh@fukushima-nct.ac.jp Keywords: Silicon carbide, Polymer Precursor method, Micro tube, Polycarbosilane, Polysiloxane.
Introduction Silicon carbide (SiC) fiber has been used as reinforcement for ceramics matrix composite (CMC), which is a suitable material in an aerospace, a nuclear power plant and a high temperature gas-turbine engineering, in which extreme resistance for severe environments is required [1-4].
Okamura: Key Eng.

Preparation and Characterization of Ni-Modified Fe-Mo and Catalytic Selective Oxidation of p-Xylene Zu-Zeng Qin1,2, Zi-li Liu1, a, Yan-bin Liu2, Rui-wen Liu2 1 School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China 2 School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China a Corresponding author.
Therefore, the green process of TPAL preparation has gradually become a hot spot. it uses the selective catalytic oxidation as the method, PX as the raw material, and oxygen or air as the oxygen source[2].
The key in the partial oxidation of PX to TPAL is the preparation process of the catalyst.

So the key constraint of the selecting ordnance equipment technical support group is not the distance of the support agencies and rendezvous points, but the support capability differences of support staff on different types and models of equipment.
Computer Engineering Vol. 33(2007), p. 261.
Military Operations Research and Systems Engineering Vol. 22(2008), p. 45.
[5] Li teaching material.

Phytoremediation is a green remedial engineering technology to repair polluted soil, and serves as a hotspot of technological research on the integrated remedy of environmental pollution[2].
Material and Methodology 1.1 Experimental Samples Samples for experiment are taken from Huanggua Mountain in Yongchuan District of Chongqing City.
Acknowledgment Foundation Item: Supported by Natural Science Foundation of Chongqing (cstc2011jjA1236); Key Laboratory of Water Environmental  Restoration ,Chongqing University of Arts and Sciences References [1] Ye Chen,Li SiYue,Zhang QuanFa.Sources and assessment of heavy metal contamination in water-level fluctuation zone of the Three Gorges Reservoir,China[J].Chinese Journal of Eco-Agriculture, 2011,19(1):146~149(In Chinese) [2] Li Hongxia,Lin Wenbo,Li Yuqing,etal.Simulation and Verification for Model of Phytoremediation on Heavy Metal Contaminated Sediment[J].Environmental Science, 2011, 32(7): 2119～2124(In Chinese) [3] Jiang Bin.Hyperaccumulator and Its Application in the Control of the Soil Polluted by Heavy Metals[J].Journal of Zhaotong Teacher s College,2002,24(5):32～34(In Chinese) [4] An ZhiZhuang,Chen TongBin,Lei Mei,etal.Tolerance of Pteris vittata L.to Pb,Cu and Zn[J].Acta Ecologica Sinica,2003,23(12):72594～2598(In Chinese) [5] Wu Guirong.The Ecophysiological and Soil
[8] Zhang Yinqiu,Tai Peidong,Li Peijun,etal.Effects of cadmium stress on the growth and physiological characteristics of Tagetes erecta L[J].Chinese Journal of Environmental Engineering, 2011,5(1):195~199(In Chinese) [9] Xu Qinsong,Shi Guoxin,Wang Xue,etal.Generation of Active Oxygen and Change of Antioxidant Enzyme Activity in Hydrilla Verticillata Under Cd,Cu and Zn Stress[J].Acta Hydrobiologica Sinica, 2006,30(1):107~112(In Chinese) [10] Liu Jianxin.The Influence of Hg2+ on Seedlings Growth and Physiological Metabolism of Pea[J].Journal of Ningxia University(Natural Science Edition),2005,26(1):67~70(In Chinese) [11] Yuan Min,Tie Boqing,Tang Meizhen.Effects of Cd,Pb,Cu,Zn and As single pollution on Chlorophyll Content and Antioxidant Enzyme Systems of Eulaliopsis binata[J].Chinese Journal of Soil Science,2005,36(6):929~932(In Chinese) [12] Yang Dan-hui.The Effects of Heavy Metals on the Structure and Function of Photosynthetic Membraned in Higher Plants[J].Chinese Bulletin of Botany

Research on Application of Fuzzy PID Control in Linear Servo System Xiangcheng Sun1,a, Haichen Qin1,b and Jiankui Chen*1,2,c 1State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P.R.
China. 2Dongguan- Huazhong University of Science and Technology Manufacturing Engineering Institute, Dongguan, 523808, P.R.
In order to show the variable’s relationship of PMLSM model clearly, we need do some hypothesis: Iron core saturation is neglected, hysteresis and eddy current losses are ignored, the stator has not damper windings, conductivity of permanent magnet material is zero, the back EMF is sinusoidal.
Ai: China Mechanical Engineering.

Results Figure 1 (a) compares the engineering stress-strain curves of the hot rolled and intercritically annealed sample and the cold rolled and intercritically annealed sample, respectively.
Figure 1 (b) shows the change in volume fraction of martensite (α') (dashed line) and reverted austenite (γR) (solid line) with respect to the engineering strain.
(a) Engineering stress strain curves for the hot vs. cold rolled material.
Thus, the spatial alignment to the tensile direction is seen to play a key role in strain localization.
The relative grain size effect seems to affect the yield stress, Figure 1 (a) when both materials, hot rolled and cold rolled, show continuous yielding.

New Oil-Absorbent Fiber Absorb the Oil of Water TAO Meia, NIU Jintaob and JIN Baodanc College of resource and environment engineering, Liaoning technical university, China aberitt@126.com, bniujt07@yahoo.com.cn, cjinbaodan721@sina.com Key words: Graft, BMA, Oil-Absorbent Fiber, Adsorption Kinetics, Isothermal Absorption Model.
Cellulose is natural renewable polymer materials, the cotton and rice straw are rich in cellulose[3], they are used to adsorb oil, but these natural materials have disadvantages such as the absorption efficiency is low, easily to absorb water, when compress the cellulose, the oil will leak easily.
Cellulose grafting process could introduce lipophilic group onto the natural cellulose, it could change natural cellulose into a new absorbing oil material which has high oil adsorption functionability.
[6] J.T Zhu, Z.H Huang, F.Y Kang, J.H Fu and Y.D Yue: Journal of New Carbon Materials Vol. 4 (2008), p. 326-330