Zhenjiang, China
Zhenjiang, China

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Zhang Z.,Jiang su University | Zhang W.,China University of Science and Technology | Chen X.,China University of Science and Technology | Cheng X.,Jiang su University
Surface and Coatings Technology | Year: 2011

Negative thermal expansion ZrW2O8 thin films has been grown on quartz substrates by pulsed laser deposition (PLD) method followed by annealing at various temperatures. The influences of annealing temperature on the morphology and phase composition of the ZrW2O8 thin films were investigated. The X-ray diffraction (XRD) and X-ray photoelectron spectroscope (XPS) analyses revealed that the as-deposited ZrW2O8 thin film showed an amorphous phase, the stoichiometry of the as-deposited thin film was close to that of the ZrW2O8 ceramic target, the crystallized cubic ZrW2O8 thin films were prepared after annealing at 1200°C. The scanning electron microscope (SEM) confirmed that the ZrW2O8 thin film deposited on the substrate heated at 650°C was smooth and compact, the crystallized cubic ZrW2O8 thin film was a polycrystalline film and its grain size grew to be larger. The high temperature X-ray diffraction analyses showed that all the peaks ascribe to the ZrW2O8 thin film shifted to higher angle with the increasing temperatures, which demonstrated that the cubic ZrW2O8 thin film exhibited negative thermal expansion and its thermal expansion coefficient was calculated to be -11.378×10-6K-1 from 20°C to 600°C. © 2011 Elsevier B.V.

Ren X.F.,Jiang su University | Zhu W.J.,China Agricultural University
Advanced Materials Research | Year: 2011

The optimal conditions for extracting of fenugreek oil from material with supercritical CO2 fluids:extraction temperature 40°C,extraction pressure 25MPa, separation temperature 60°C, separation pressure one atmosphere pressure. Adding 50%(V/W) absolute alcohol as modifier, the highest extraction ratio is 8.95mg/g dry fenugreek seeds. © (2011) Trans Tech Publications.

Tang D.,Jiang Su University | Zhang Y.,Jiang Su University | Duan R.,Jiang Su University | Ni H.,Nantong University
Advanced Materials Research | Year: 2011

Tubular cathode and plate anode were prepared by gel-casting process and coating process, which used mesocarbon microbead(MCMB) as raw materials, then cathode and anode were assembled to prepare single fuel cell. The generation performance for single tubular direct methanol fuel cell was tested under different electrolyte temperatures, methanol concentrations and oxygen flow rates, and the factors that affected the cell performance were discussed. The results showed that temperature and oxygen flow rate were the important factors of the generation performance in tubular direct methanol fuel cell (TDMFC), but the methanol concentration had a relatively smaller impact on the cell performance. The stability test of the cell after working for 100h shows that the tubular MCMB cathode had a perfect stability. © (2011) Trans Tech Publications, Switzerland.

Yu X.Q.,Jiang Su University | Fan W.Q.,Jiang Su University
Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015 | Year: 2015

A novel MoS2 sensitized MoS2-TiO2 double-layer nanostructure arrays has successfully designed and prepared. The MoS2 as a sensitizer enhance the photoelectrochemical performance of MoS2-TiO2. The obtained were characterized by scanning electron microscopy, Transmission electron microscopy, high-resolution TEM and photoelectrochemical measurements. According to the photoelectrochemical performance, the sensitized MoS2-TiO2 nanostructures could obviously enhace the photocurrent compared to the single TiO2 nanowires. Moreover, the sample exhibits the best photoelectrochemical performance when the feed ratio of MoS2 is 60%. © 2015 Taylor & Francis Group, London.

Qing L.G.,Jiang Su University | Dean Z.,Jiang Su University | Hui J.,Jiang Su University
Applied Mechanics and Materials | Year: 2013

To solve the strong coupling and nonlinear of switched reluctance motor(SRM) used in the Electric valve, we use a fuzzy compound PID control method, and apply it to the switched reluctance motor's speed control system. The simulation applies that this method combines the advantages of fuzzy control and PID control and is well applied to non-linear's object. Based on the theory, we design the core to the outer loop's speed feedback and inner current loop's feedback system in TMS320F28335, and describe the specific hardware and software structure, morely verify the feasibility's test. The theory can solve the problem that the traditional PID cannot meet the variation of the parameter from the electric valve. © (2013) Trans Tech Publications, Switzerland.

Chen J.M.,Jiang Su University | Lu H.Y.,Jiang Su University
Advanced Materials Research | Year: 2014

GrowCut algorithm is not only an interactive algorithm on the basis of cell automata, but also a multi-label algorithm based on seeds point. Aiming at the GrowCut algorithm usually asks users to partition foreground and background manually and mark a lot more initial seeds. This paper presents an automatic object segmentation method which combining secondary watershed and GrowCut algorithm, here in the following paper refers it to as SWGC algorithm. It firstly using the twice used watershed algorithm to partition the input image, the segmented regions are labeled using Mahalanobis distance, and merged according to the image color and space information, thereafter applying the GrowCut algorithm to perform globally optimized segmentation. The main contribution focuses on performing automatic segmentation which consist of obtain the foreground and background region and generate the seed template of GrowCut algorithm automatically. Thus not only leave out the constraints of user interaction operation, but also avoid the subjectivity and uncertainty. The proposed method reduces the runtime significantly as well as improves the segmentation accuracy and robustness of GrowCut algorithm. Experimental results show SWGC algorithm has superior performance compared to the other related methods. © (2014) Trans Tech Publications, Switzerland.

Ma Y.,Jiang Su University | Wu Y.,Jiang Su University
International Journal of Bifurcation and Chaos | Year: 2015

In this paper, the number and distributions of limit cycles in a Z3-equivariant quintic planar polynomial system are studied. 24 limit cycles with two different configurations are shown in this quintic planar vector field by combining the methods of double homoclinic loops bifurcation, heteroclinic loop bifurcation and Poincaré-Bendixson Theorem. The results obtained are useful to the study of weakened 16th Hilbert problem. © 2015 World Scientific Publishing Company.

Tang D.,Jiang Su University | Lv H.,Jiang Su University | Li C.,Jiang Su University
Advanced Materials Research | Year: 2012

A new tubular cathode support for Direct Ethanol Fuel Cell (DEFC) was prepared by the gelcasting process using mesocarbon microbead(MCMB) and graphite as the main raw materials. Through the tubular cathode electrical property test, the advantages and disadvantages of cathode tube performance are studied at different graphite proportion. The results showed that when the graphite is more than 30 percent, the charge transmission ability has become extremely close. When the graphite ratio is 40 and 50 percent, the electrical performance is the best. With the graphite doping ratio of 40 percent, the electrode electrochemical reaction will have been reinforced when the temperature is high. When the air flow is 100 ml/min, the electricity capacity is better. © (2012) Trans Tech Publications, Switzerland.

Tang D.,Jiang Su University | Zhao W.S.,Jiang Su University
Advanced Materials Research | Year: 2013

The sintered body of tubular cathode for Direct Ethanol Fuel Cell(DEFC) is prepared by the gelcasting process using a certain proportion of graphite powder and mesocarbon microbead(MCMB). The electrical performance under different air flow rates, operating temperature, porosity of cathode diffusion layer, inlet pressure and different thickness of catalyst layer are analyzed by the combination of experimental and numerical simulation method. The results show that the increase of diffusion layer porosity, inlet pressure, thickness of catalyst layer and operating temperature are benefit for the improvement of the cell performance. Moreover, the electrical performance is improved when the air flow rate is 100 mL/min. © (2013) Trans Tech Publications, Switzerland.

Rui-Hao L.,Jiang Su University | Yu-Kun S.,Jiang Su University | Xiao-Fu J.,Jiang Su University
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011 | Year: 2011

Prediction of battery's remaining capacity is always a significant issue to which electric vehicle researchers paid close attention. Batteries of different types or the same type batteries of different model varies in prediction model of remaining capacity, the expert's advice obtained from experiment is not so universal that it is significant to build and improve the prediction model of remaining capacity for batteries of different types. This article takes iron phosphate Li-ion battery as the object of study, based on charge-discharge performance test of iron phosphate Li-ion battery, introduces neural network method to build prediction model for remaining capacity of battery and verify the model with test data in the end. © 2011 IEEE.

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