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PVDF piezoelectric films are new, valuable materials for sensing application and have attracted people’s attention due to their excellent characteristics (e.g. high piezoelectric coefficient, good flexibility, light weight, easy affixation, wide frequency range, etc.)
Recently, PVDF piezoelectric sensors have been applied in numerous fields[4,5], for instance, structural health monitoring, smart material and structure, various force sensors, etc.
The key part of modeling vehicle-track coupling dynamics is the wheel/rail contact calculation model which has a direct influence on the precision and the speed of the computing analysis.
In practical engineering application, a charge amplifier is required to convert the charge signal to voltage signal, which is then converted to digital signal by A/D converter, a fully automated monitoring system is formed combining them with data acquisition, processing and analysis software.
Jin: Chinese Journal of Mechanical Engineering, Vol. 44 (2008), p. 50-56 [2] A.

Recovering Ammonium-Nitrogen and Phosphorus Through Struvite from Anaerobic Digested Effluent of Poultry Wastewater: Effects of Reagent Ratio and Ph 1Hong-rui Yang, 1Ya-lei Zhang ,2ue-fei Zhou (Corresponding author) and 1Hong-guang Zhu 1Modern agricultural science and engineering research institute, Bio-energy Research Center ,Tongji University,Shanghai,P.R.China 2Key Laboratory of Yangtze Water Environment < Ministry of Education >,Tongji University,Shanghai,P.R.China E-mail: yanghongrui.dream@163.com,Zhangyalei2003@163.com, zhouxuefei@tongji.edu.cn Keywords- Fermentation wastewater; struvite; nitrogen and phosphorus recovery; reagent adding ratio; pH optimizing Abstract-Fermentation wastewater generated from livestock and poultry breeding contains high strength of ammonium-nitrogen and phosphorus, which has the huge nutrient recovery value.
Also it can be used as raw materials of nitrogen or phosphorus for industrial production[18,19], realizing the resource recycled and reused.
Materials and methods Substrates .
Acknowledgments We sincerely thank the Ministry of Science and Technology of the People’s Republic of China for financially supporting this work (National Key Technology R&D Program, No 2008BADC4B05 and No.2008BAJ08B21).
Chemical Engineering Science, vol.63, pp. 3514-3525, 2008

Impact Identification of Estuarine Water Quality to Marine Biota: A Case Study in Wonorejo Estuary, Indonesia WAZIROTUS Sakinah1, a*, SUNTOYO2,b and MUKHTASOR2,c 1Coastal Engineering and Management Department, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia 2Department of Ocean Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia awazirotus.sakinah@gmail.com, bsuntoyo@gmail.com, cmukhtasor_isp@yahoo.com Keywords: Wonorejo estuary, water quality, marine biota Abstract.
However, the research about water quality in Wonorejo estuary with others key water quality parameters, such as ammonia and phenol was not examined, yet.
Material and Method Field measurement was done at August 2015 in dry season.
Ammonia that usually appear from organic material decomposition make high concentration in the bottom layer.
Ammonia in the water from fertilization, fishes or shrimps fesses, and results of organic material decay that rich in nitrogen.

An Improved Multistage Variable-step MPPT Algorithm for Photovoltaic System Ping Wang, Zhe Zhou, Mengmeng Cai, Jingbin Zhang Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin, China garyzhou11@gmail.com Keywords: photovoltaic system; MPPT; incremental conductance algorithm; boost circuit Abstract.
The mathematical model of photovoltaic cel The principle of PV cell is based on photovoltaic effect of semiconductor materials.
This effect means that semiconductor materials would absorb photon when exposed to light.
High Voltage Engineering, 2009, vol.8, pp.2048-2052
Tianjin：Tianjin University, school of electrical engineering and automation, 2011.

MATERIALS AND METHODS MATERIALS PEG400（SIGMA）；PEG1000（SIGMA）；PEG6000（SIGMA）；PEG10000（SIGMA）;PEG20000（SIGMA）；Hyaluronidase (SIGMA)；Medical level sodium hyaluronate dry powder (09120810) （Shandong FuRuiDa biological chemical Co., LTD）；Carbazole(Chinese medicine group Shanghai chemical reagent company)；The standard glucuronic acid（Shanghai biological technology Co., LTD）；Folin-Ciocalteu's phenol（Shanghai Ruji biological technology development Co., LTD）；NaOH；HCl；Na2HPO4；NaH2PO4；Anhydrous alcohol；phenol； FA1204B electronic balance (Shanghai precision &scientific instrument Co., LTD)；85-type 1 constant temperature and heating magnetic blender (changzhou guohua instrument plant)；723 N uv-vis spectrophotometer；HH-4 display constant temperature water-bath pot；TGL-16 C high-speed centrifuge；LDZX-50 a KBS vertical pressure steam sterilization pot； Mooney viscometer having rotor syringe；Ubbelohde viscometer.
Acknowledgements The research was funded by the Commission of Science and Technology of Henan Province (CSTHP), the Program for Tackling Key Problems, programs No.112102310326 and the Commission of Education of Henan Province (CEHP), the Science Foundation Program, programs No. 2011A180007; Henan University of Technology, special program of introducing persons of ability No.2007BS023.
Chemical Industry and Engineering Progress, 2006, 25(12), 1410-1414
Journal of Clinical Rehabilitative Tissue Engineering Research 2008 ,April 1,No.14

Zhao1,b 1School of Engineering, University of Liverpool, Liverpool L69 3GH, United Kingdom 2School of Materials Science and Engineering, Central South University, Changsha 410083, China axiaozhumse@163.com, byyzhao@liv.ac.uk Keywords: porous copper, permeability, thermal conductivity, heat transfer Abstract.
The raw materials were commercially pure (99.9%) copper powder (Ecka Granules Metal Powder Ltd., UK) with a particle size range of 50 to 100 μm, and food grade potassium carbonate powder (E.E.
The surface area, permeability and thermal conductivity of porous copper samples are three key parameters which affect the heat transfer performance.

Adsorptive Removal of Ni(II) Ions from Aqueous Solution by Polyacrylic Acid/Attapulgite Composite Hydrogels Yi-wei Zhenga, Wen-wen Taob, Gui-fang Zhangc, Chao Lvd, Yi-ping Zhao*e and Li Chenf State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China ayipingzhao@sina.com, b1428555145@qq.com, czgf603@163.com, dmariahlv@126.com, eyipingzhao@tjpu.edu.cn, ftjpuchenlis@sina.com Keywords: Composite hydrogels, Adsorption, Ni(II) ions, Polyacrylic acid, Attapulgite Abstract.
Therefore, the search for low cost and large adsorption quantity of ecological wastewater treatment materials becomes a research focus [3-6].
Hydrogels is a composite system composed of solvent and polymer network, its excellent hydration swelling capacity lead to a wide range of applications in industry, agriculture, biology and materials and other fields [11].
Experimental Procedure Materials.
So the PAA/ATP composite hydrogels can be reused as a kind of good adsorption materials for removal of heavy metal in wastewater.

Microstructural Evolution and Resulting Mechanical Properties of Weld Joints upon Flux Cored Arc Welding and Post-weld Heat Treatment Hui Yu1, a, Keesam Shin1, b, Jiling Dong1, c, Dae-Hwang Yoo1, d, Woong Lee1, e Hee Dae Im 2, f, Woong Kil2,g and Won-Jung Jung2, h 1 School of Nano & Advanced Materials Engineering, Changwon National University, Changwon, Korea 2 Welding research Institute, ESAB SeAH Corp., Changwon, Korea a yuhuil@changwon.ac.kr, bkeesam@changwon.ac.kr, cdongjl@changwon.ac.kr, d dhyoo@changwon.ac.kr, ewoonglee@changwon.ac.kr, fhdlim@esab.co.kr, gwkil@esab.co.kr, h wonj2@esab.co.kr Keywords: Weld joint, PWHT, Microstructure, Mechanical properties, Complex particles.
The sharp increase in the impact value of the specimens after PWHT is believed to be due to the comprehensive effect of softening of the materials [11], grain growth, and so on.
Acknowledgment This project was funded by the Key Research Institute of Changwon National University and ESAB SeAH Corp., Ltd.
In proceedings of the Fifth International Coferrence on Creep of Materials, Lake Buena Vista, Florida, USA (1992), p. 69
Levinskas: Materials Science (MEDŽIAGOTYRA) Vol.12 (2006), p.192

Input index mainly includes material and human resource input.
The key lies in the establishment of investment, basic yearly capital stock and depreciation rate in the same year.
Material capital investment, though still universally slack, is superior to human capital investment.
The average overall material capital slack throughout the nation is 39%. 4.
[4] DENG Xue-ping1,WANG Xu, “Analysis of the Total Factor Productivity of Chinese Logistics Companies” Systems Engineering,2008.6:1-9 [5] LIU Bing_lian,LIU Yong, “Estimation in China Cumulative Amount of Highway and Waterway Capita” Journal of Beijing Jiaotong University(Social Sciences Edition),2007.9:43 [6] LIU Yuha, “AnAnalysis onDynamicOperationalEfficiency of ChinaRoad Transportation Industry”Industrial Economics Research,2008.1:56-63

Atomic and electronic scale simulation on low index face growth of nano CVD diamond films Xizhong An1, a, Guoquan Liu2,b and Chao Li1,c 1School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China 2School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 3School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China aanxz@mail.neu.edu.cn, bg.liu@ustb.edu.cn, clichao_lc911@163.com Keywords: CVD diamond; Nano films; KMC simulation; LDA computation; Growth mechanism; Atomic scale; Electronic scale Abstract.
The deposition process for CVD diamond film mainly depends on the combination of gas phase chemistry in the reactor and surface adsorption mechanism on the substrate, which can be regarded as the key to determine the film quality [4].
The key points are how these species are generated, what events occurred, which species contribute to the film growth, and how they are destroyed, all of which needs a thorough understanding on the surface reaction dynamics [30, 31].