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ECO-FRIENDLY WATER-BORNE CONDUCTING POLYANILINE

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Chinese Journal of Polymer Science 2013年第6期31卷 853-869页

作者： hong-ming Zhang 王献红 Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Among the intrinsically conductive polymers, polyanilines have been of great interest in the past decades due to their wide applications in many fields, thanks to their reasonably good conductivity, easy preparation, and special redox properties. Ever-increasing environmental corsiderations make the processing of polyanilines shift from toxic organic solvent-based system to eco-friendly water-based system. The present paper reviews the synthesis of water-borne conducting polyanilines, and possible applications are discussed including supercapacitor electrode material, metal free corrosion protection coating, lithium oxygen battery cathode material and ultraviolet curable resin.

关键词： Water-bome Polyaniline Supercapacitor Corrosion protection Lithium oxygen battery Ultraviolet curable.

MEASURING SEA ICE DRIFT VIA CROSS-CORRELATION OF RADAR ICE IMAGES

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Journal of Hydrodynamics 2004年第6期16卷 716-720页

作者： SUNHe-quan SHENYong-ming QiuDa-hong StateKeyLaboratoryofCoastalandOffshoreEngineering DalianUniversityofTechnologyDalian116023China

The motion of sea ice has a great effect on winter navigation, and oil fieldexploration in the Bohai Sea. It is very important to measure the ice drift accurately andefficiently. As a practical technique, radar imagery has been used for sea ice monitoring andforecasting for a long *** with the radar imagery and cross-correlation technique, a newmeasurement method based on the cross-correlation of radar ice images is specified in this paper toobtain full field measurement of sea ice drift. The theory and fast implementation ofcross-correlation are presented briefly in the paper, including the filtering method to modify theinvalid vectors. To show deeply the validity of the present method, the velocity maps of sea icedrift are provided in the paper, which are calculated from the radar images grabbed in the LiaodongGulf. The comparison with the traditional tracing method is also conducted.

关键词： sea ice drift radar ice image cross-correlation

Unsaturated Creep Behaviors of Weak Intercalated Soils in Soft Rock of Badong Formation

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Journal of Mountain Science 2015年第6期12卷 1460-1470页

作者： ZHU Yan-Bo YU hong-ming College of Geology Engineering and Geomatics Chang'an University Faculty of Engineering China University of Geosciences

The cutting slopes in soft rock of redbed appeared in Yichang-Badong highway often suffer from the instability along weak intercalations, so the creep behaviors of weak intercalated soils are crucially important for the stability of cutting slopes. Because the deformation of weak intercalated soils is significantly affected by water content due to the strong water sensitivity, it is necessary to study the influence of matric suction on the creep behaviors of weak intercalated soils. In order to find out the unsaturated creep characters of weak intercalated soils, a GDS unsaturated triaxial apparatus was used. Then the triaxial creep experiments on weak intercalated soil samples under varying matric suction were conducted to obtain the unsaturated creep curves. The results show that the weak intercalated soils have obvious creep behaviors, and the creep strain is in nonlinear relationship with stress and time. When the matric suction is constant, a larger deviator stress will lead to a larger creep strain; When the deviator stress is constant, a smaller matric suction will lead to a larger creep strain. Based on the Mesri creep model, an improved creep model for weak intercalated soils under varying matric suction was established, in which the relationship of stress-strain was expressed with a hyperbolic function, and the relationship of strain-time was expressed with power functions in stages. Then an unsaturated creep model including stress-matric suction-strain-time for weak intercalated soils was established based on the power function relationship between matric suction and Ed(a parameter of the improved creep model). The comparison of the calculated values of creep model and the experimental values shows that the creep behaviors of weak intercalated soils can be predicted by the unsaturated creep model by and large.

关键词： Badong formation Weak intercalated soils Unsaturated creep behaviors Soil triaxial apparatus Creep model

Effect of Induction Heat on Initial Solidification During Electromagnetic Continuous Casting of Steel

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Journal of Iron and Steel Research International 2010年第7期17卷 13-18页

作者： WANG hong-ming LI Gui-rong Materials Science and Enginee1'ing School Jiangsu University Zhenjiang 212013 Jiangsu China

A three-dimensional finite element model of electromagnetic field and temperature field was developed to investigate the effects of induction heat of high frequency electromagnetic field on the early solidification process of molten *** results show that the increases of exciting current frequency make the effects of induction heat on solidification increase ***,the effects of induction heat on solidification process are weakened sharply with the increase of casting ***,when the casting speed exceeds a certain value,the effects of induction heat on solidification process are nearly negligible.

关键词： high frequency electromagnetic field induction heat initial solidification

The J_2 invariant relative configuration of spaceborne SAR interferometer for digital elevation measurement

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Acta Mechanica Sinica 2010年第4期26卷 643-651页

作者： ming Xu Ying-hong Jia Shi-Jie Xu Department of System Engineering DFH Satellite Co. Ltd. EO. Box 5616 Beijing 100094 China

A 3-craft formation configuration is proposed to perform the digital elevation model （DEM） for the distributed spacebome interferometric synthetic aperture radar （InSAR）, and it is optimized by the modified ant colony algorithm to have the best compatibility with J2 invariant orbits created by differential correction algorithm. The configuration has succeeded in assigning the across-track baseline to vary periodically and with its mean value equal to the optimal baseline determined by the relative height measurement accuracy. The required relationship between crafts＇ magnitudes and phases is formulated for the general case of interferometry measure from non-orthographic and non-lateral view. The J2 invariant configurations created by differential correction algorithm are employed to investigate their compatibility with the required configuration. The colony algorithm is applied to search the optimal configuration holding the near-constant across-track baseline under the J2 perturbation, and the absolute height measurement accuracy is preferable as expected.

关键词： InSAR Digital elevation model (DEM) J2 invariant orbit Differential correction algorithm Formation flying

Effects of sediment particle morphology on adsorption of phosphorus elements

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International Journal of Sediment Research 2013年第2期28卷 246-253页

作者： hong-wei FANG ming-hong CHEN Zhi-he CHEN Hui-ming ZHAO Guo-jian HE Department of Hydraulic Engineering the State Key Laboratory of Hydro Science and EngineeringTsinghua University College of Water Resources and Civil Engineering China Agricultural University Department of Water Resources and Environment Sun Yat-sen University

Sediment particle surface morphology affects phosphorus *** paper studied the phosphorus adsorption on sediment particle by using a Scanning Electron Microscope(SEM) and an Energy Dispersive X-ray Spectroscopy (EDS).Sediment samples from the Yangtze,Yellow and Yongding rivers in China were chosen to measure the particle surface morphology,surface gray scale and element distribution *** samples were firstly cleaned and put into phosphate solution for *** the Langmuir equation and Freundlich equation were used for descriptions of adsorption-desorption isotherms for *** were then dried and *** results show that the adsorption of phosphorus depends on the surface morphology of *** exists mostly in the ridges and channels,while a few exist in the slopes,and casually in the peaks,passes and pits.

关键词： Surface morphology Scanning electron microscope Adsorption Element distribution

Semidefinite Relaxation for Two Mixed Binary Quadratically Constrained Quadratic Programs:Algorithms and Approximation Bounds

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Journal of the Operations Research Society of China 2016年第2期4卷 205-221页

作者： Zi Xu ming-Yi hong Department of Mathematics College of SciencesShanghai UniversityShanghai 200444China Department of Industrial and Manufacturing Engineering Iowa State UniversityAmesIA 50011USA

This paper develops new semidefinite programming(SDP)relaxation techniques for two classes of mixed binary quadratically constrained quadratic programs and analyzes their approximation *** first class of problems finds two minimum norm vectors in N-dimensional real or complex Euclidean space,such that M out of 2M concave quadratic constraints are *** employing a special randomized rounding procedure,we show that the ratio between the norm of the optimal solution of this model and its SDP relaxation is upper bounded by 54πM2 in the real case and by 24√Mπin the complex *** second class of problems finds a series of minimum norm vectors subject to a set of quadratic constraints and cardinality constraints with both binary and continuous *** show that in this case the approximation ratio is also bounded and independent of problem dimension for both the real and the complex cases.

关键词： Nonconvex quadratically constrained quadratic programming Semidefinite program relaxation Approximation bound NP-hard

rp Drell-Yan Process in Color Dipole Model

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Communications in Theoretical Physics 2002年第7期38卷 68-70页

作者： ZHAO hong-ming DUAN Chun-Gui Department of Physics Hebei Normal University Shijiazhuang 050016 China Department of Physics Hebei Normal University Shijiazhuang 050016 China CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 China

We study pion-proton Orp) Drell-Yan (DY) dilepton production in the target rest frame with color dipole model. The prediction for πp DY cross section at the energies of RHIC and LHC is presented, and it can be compared with the data directly, because it does not need K factor. At the same time, the transverse momentum distribution is shown in quantities, which is not available from the standard parton model. The experimental studies of the process could test the color model for DY dilepton production.

关键词： color dipole model, Drell-Yan process, cross section

Real-time Control Oriented HCCI Engine Cycle-to-cycle Dynamic Modelling

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International Journal of Automation and computing 2011年第3期8卷 317-325页

作者： He Ma hong-ming Xu Ji-hong Wang School of Mechanical Engineering University of Birmingham Birmingham B15 2TT UK School of Engineering University of Warwick Coventry CV4 7AL UK

For homogeneous charge compression ignition （HCCI） combustion, the auto-ignition process is very sensitive to in-cylinder conditions, including in-cylinder temperature, in-cylinder components and concentrations. Therefore, accurate control is required for reliable and efficient HCCI combustion. This paper outlines a simplified gasoline-fueled HCCI engine model implemented in Simulink environment. The model is able to run in real-time and with fixed simulation steps with the aim of cycle-to-cycle control and hardware- in-the-loop simulation. With the aim of controlling the desired amount of the trapped exhaust gas recirculation （EGR） from the previous cycle, the phase of the intake and exhaust valves and the respective profiles are designed to vary in this model. The model is able to anticipate the auto-ignition timing and the in-cylinder pressure and temperature. The validation has been conducted using a comparison of the experimental results on Ricardo Hydro engine published in a research by Tianjin University and a JAGUAR V6 HCCI test engine at the University of Birmingham. The comparison shows the typical HCCI combustion and a fair agreement between the simulation and experimental results.

关键词： dSPACE gasoline-fueled homogeneous charge compression ignition (HCCI) engine real-time control oriented systemmodelling and simulation.