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NEW WAVE-DEPENDENT FORMULAE FOR sEA sPRAY FLUX AT AIR-sEA INTERFACE

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Journal of Hydrodynamics 2009年第4期21卷 573-581页

作者： sHI Jian ZHAO Dong-liang LI Xun-qiang ZHONG Zhong Key Laboratory of Coastal Disaster and Defense Ministry of Education Hohai University Nanjing 210098 China institute of Meteorology PLA University of Science and Technology Nanjing 211101 China College of Physical and Environment Oceanography Ocean University of China Qingdao 266100 China

A bubble-derived sea spray Generation Function （ssGF） was deduced, which was integrated into the new wave-dependent ssGF. The effect of sea spray feedback was parameterized by the feedback coefficients A and B. The relationship of A（B） and the wind-sea Reynolds number was derived, which shows that the feedback effect of sea spray is decreasing with the wave developing. New sea spray flux formulae, including the new ssGF and new feedback coefficients, were proposed, which can reveal clearly the influence of wave state on sea spray fluxes. spray fluxes in the Humidity Exchange Over the sea （HEXOs） experiment were simulated again, and results show that spray momentum flux is small in this experiment, but spray heat flux is large. Comparisons of the sea spray fluxes calculated by two kinds of formulae in different wave states show that previous wave-independent spray flux formulae are the special cases of the presented new wave dependent formulae for sea spray flnx.

关键词： sea sray flux HEXOs wave state sea spray Generation Function (ssGF)

structure and Pozzolanic Activity of Calcined Coal Gangue during the Process of Mechanical Activation

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Journal of Wuhan university of technology(Materials science) 2009年第2期24卷 326-329页

作者：郭伟 Department of Material Engineering Yancheng Institute of Technology institute of Material science and Engineering Nanjing University of Technology

On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XRD, FTIR, NMR, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.

关键词： coal gangue mechanical activation structure NMR tetrahedron

simulation study of real-time monitor for BEPC-Ⅱ luminosity

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science china(Technological sciences) 2010年第5期53卷 1215-1219页

作者： sHAN Qing1,2,WU Jian2,XUE Zhen2,XU ZiZong2,HU Tao3.WANG YiFang3.& WANG XiaoLian2 1 College of Material science and technology,nanjing university of Aeronautics and Astronautics,nanjing 210016,china 2 Department of Modern Physics,university of science and technology of china,Hefei 23.026,china 3.institute of High Energy Physics,Chinese Academy of sciences,Beijing 100049,china College of Material science and technology Nanjing University of Aeronautics and Astronautics Nanjing China Department of Modern Physics University of Science and Technology of China Hefei China institute of High Energy Physics Chinese Academy of Sciences Beijing China

A fast and real time luminosity monitor system will be used in the BEPC-Ⅱ(Beijing Electron Positron Collider,china).Photons generated in radiative Bhabha scattering at the interaction point are transformed into charged particles,and then the luminosity of each bunch pair is measured through collecting the Cherenkov light produced by charged particles in fused *** whole process happening in the detector is *** physics acceptance and detection threshold with the monitor accu-racy of 1% are set based on the simulation spectra of photoelectron yield calibrated by e-beam data.

关键词： luminosity BEPC-Ⅱ Cherenkov detector radiative Bhabha

Distribution characteristics of terrestrial heat flow density in Jiyang depression of shengli Oilfield, East china

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science china Earth sciences 2004年第9期47卷 804-812页

作者： GONG Yuling1,2, WANG Liangshu1, LIU shaowen1, LI Cheng1, HAN Yongbing1, LI Hua1, LIU Bo1 & CAI Jingong3.1. Department of Earth sciences, nanjing university, nanjing 210093.{3. 2. Department of Exploration and Information technology of East{3. institute of technology, Fuzhou 3.4000,{3. 3. Earth science Institution of shengli Oilfield, Dongying 257015,{3. Department of Earth sciences Nanjing University Nanjing 210093 China Department of Exploration and Information technology of East china institute of technology Fuzhou 344000 China Earth science Institution of shengli Oilfield Dongying 257015 China

Based on the geo-temperature data of 13.systematically continuous temperature log curves and 700 testing oil boreholes in Jiyang depression, shengli Oilfield, and the measured thermal conductivities of 47 rock samples, the terrestrial heat flow densities of 114 boreholes of Jiyang depression and its surrounding areas are determined, including 13.of those data derived from systemically continuous temperature logging. The results show that Jiyang depression has a relatively high background heat flow with an average value (65.8 5.4) mW/m2. The lateral variation of heat flow in basin has negative correlation with basement depth. Moreover, heat flow of uplift areas with shallower basement is high, so are those of regions with volcanic rocks, and those of depression areas with deep basement are relatively low. The heat flow densities of different structural units of Jiyang depression can be summarized as follows: The average heat flow value of Zhanhua sag is (67.4 5.3. mW/m2, higher than that of the whole basin, that of Dongying sag is (66.0 6.1) mW/m2, and that of Chezhen sag is (65.1 3.7) mW/m2. It is apparent that these latter two values are approximate to the average value of the whole Jiyang depression, while the average value of Huimin sag is (63.65.0) mW/m2, lower than that of the whole basin. In fact, the basement depth and the distribution framework of uplift and depression areas are all controlled by the process of lithosphere extension. In addition, the distribution of volcanic rocks in basin is also relatively close to this extension geodynamic process. In summary, the distribution characteristics of terrestrial heat flow of Jiyang depression is determined by the Cenozoic tectono-thermal events of this region.

关键词： Jiyang depression, terrestrial heat flow, thermal conductivity.

Travelling wave solutions of a generalized Camassa-Holm-Degasperis-Procesi equation

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science china Mathematics 2011年第3期54卷 555-572页

作者： DENG shengFu1, GUO BoLing2 & WANG TingChun2,3.1Department of Mathematics, Zhanjiang Normal university, Zhanjiang 524048, china 2institute of Applied Physics and Computational Mathematics, Beijing 100088, china 3.College of Math and Physics, nanjing university of Information science and technology, nanjing 210044, china 1. Department of Mathematics Zhanjiang Normal University Zhanjiang 524048 China2. Institute of Applied Physics and Computational Mathematics Beijing 100088 China3. College of Math and Physics Nanjing University of Information Science and Technology Nanjing 210044 China

The travelling wave solutions of a generalized Camassa-Holm-Degasperis-Procesi equation ut-uxxt + (1 + b)umux = buxuxx + uuxxx are considered where b > 1 and m are positive integers. The qualitative analysis methods of planar autonomous systems yield its phase portraits. Its soliton wave solutions, kink or antikink wave solutions, peakon wave solutions, compacton wave solutions, periodic wave solutions and periodic cusp wave solutions are obtained. some numerical simulations of these solutions are also given.

关键词： homoclinic orbits heteroclinic orbits peakon wave solutions compacton wave solutions periodic cusp wave solutions

A whisker-like carbon composite for the immobilization of laccase and its bioelectrochemistry

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science china Chemistry 2010年第6期53卷 1332-1336页

作者： MA GuoXian1,2,ZHONG QingDong2 & LU TianHong3.1Department of Chemical Engineering,shanghai institute of technology,shanghai 20023.,china 2school of Materials science and Engineering,shanghai {3.,shanghai 200072,china 3.epartment of Chemistry,nanjing Normal {3.,nanjing 210097,china 1. Department of Chemical Engineering Shanghai Institute of Technology Shanghai 200233 China2. School of Materials Science and Engineering Shanghai University Shanghai 200072 China3. Department of Chemistry Nanjing Normal University Nanjing 210097 China

A novel mesoporous carbon/whisker-like carbon (MCWC) composite was used for the immobilization of laccase (Lac) and its bioelectrochemical behaviors were *** was confirmed by XPs that Lac was strongly adsorbed on the surface of the MCWC *** cyclic voltammetric results showed that the immobilized Lac underwent a direct quasi-reversible electrochemical *** value of the electron transfer rate constant ks was estimated to be 0.770 s-1,indicating a reasonably fast electron transfer between the immobilized Lac and the underlying *** surface concentration (I-) of Lac was estimated to be 2.73. × 10-12 mol/*** experimental results showed that the immobilized Lac displayed an appreciable electrocatalytic activity to the electrochemical reduction of *** properties could be attributed to the particular structure of loosely packed nanometer-scale carbon whiskers and the existence of a large amount of oxygen-containing *** immo- bilization method and the novel carrier (MCWC) may find new applications in fabricating the biocatalysts for biofuel cells.

关键词： laccase whisker-like carbon composite direct electrochemical reaction oxygen bioelectrochemistry

The feature study on the π and proton rapidity distributions at AGs, sPs and RHIC

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science china(Physics,Mechanics & Astronomy) 2009年第2期52卷 198-206页

作者： FENG shengQin1,2 & YUAN XianBao1,3.1 College of science, china Three Gorges university, Yichang 443.02, china 2 school of Physics and {3., Wuhan university, Wuhan 43.072, china 3.institute of Particle Physics, Central china Normal university, Wuhan 43.070, china 1. College of science China Three Gorges University Yichang 443002 China 2. school of Physics and technology Wuhan University Wuhan 430072 China 3. institute of Particle Physics Central China Normal University Wuhan 430070 China

The features of nuclear stopping power and multi-hadron production systematically are studied by making an analysis of rapidity distributions of pion and proton at AGs, sPs and RHIC in this work. It is found that nuclear stopping power increases linearly with project rapidity yp at AGs and sPs, but that is not liner at RHIC. It is argued that the average rapidity loss is saturated at central rapidity region at RHIC. For pion distribution, it is found that the phase space of pion distribution distributes uniformly in the longitudinal direction,and a linear relationship of L with log s is given at AGs and sPs. Non-uniform flow model may explain the features of the distribution at AGs and sPs, but may not ex- plain those of at RHIC.

关键词： non-uniform flow model average rapidity loss baryon number density nuclear stopping power

Influence of valence electron structures of phase and biphase interfaces of sulfides on hot brittleness in steel

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science china(Technological sciences) 2004年第4期47卷 488-504页

作者： LIU Yan1,3. LIU Zhilin1, ZHANG Chengwei1,2 & ZHOU Yingchun1 1. Liaoning institute of technology, Jinzhou 121001, china 2. china National Oil and Gas Exploration and Development Corporation, Beijing 100011, china 3. College of science, Northeastern university, shengyang 110006, china 1. Liaoning institute of technology 121001 Jinzhou China 2. College of science Northeastern University 110006 Shengyang China 3. china National Oil and Gas Exploration and Development Corporation 100011 Beijing China

This paper calculates the electron structures of phase of Fes, Mns and their biphase interface electron structures with austenite in steel. The precipitation and the transformation of Fes and Mns are investigated through studying the valence electron pair numbers on the strongest bond n A with the structure formation factor s. The continuity of electron density and its relation with stress are explored in the biphase interfaces with the electron density difference απ Using n A, s, απ we explain the reason why Fes can bring about hot brittleness in steel and the physical mechanism why Mns may eliminate or inhibit hot brittleness, based on which satisfying results are obtained by calculating several rare-earth sulfides.

关键词： valence electron structure, sulfide, hot brittleness, and rare earth.

Relations between thickness of UHMWPE’s wear debris and positive pressure of tribological system

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Chinese science Bulletin 2008年第9期53卷 1435-1443页

作者： LIU HongTao1,2,3.& GE shiRong1,3.1 institute of Tribology and Reliability Engineering, china university of Mining & {3., Xuzhou 221116, china 2 College of Mechanical and Electrical Engineering, china university of Mining & {3., Xuzhou 221116, china 3.Biotribology Center, state Key Laboratory of Tribology, Xuzhou 221116, china institute of Tribology and Reliability Engineering China University of Mining & Technology Xuzhou 221116 China College of Mechanical and Electrical Engineering China University of Mining & Technology Xuzhou 221116 China Biotribology Center State Key Laboratory of Tribology Xuzhou 221116 China

MiaoXAM2.5X-50X Ultrahigh Precision surface 3. Profiler is introduced to research the relations be- tween thickness of UHMWPE’s wear debris and positive pressure of tribological system. Research re- sults show that thickness of wear debris owns evident classification, and the first grade thickness math model and the second grade thickness math model are built. By the second grade thickness math model, the true force condition in the tribological system can be gotten, and the model can be used as a tool to modify simulating parameters of the tribological system, and it is an important inspecting method to the airtight system which cannot be examined in real time. The first grade thickness math model can describe the true working load and surface condition of work piece in the tribological sys- tem, and is an effective description method for the running condition of frictional pairs. The research results at different lubricating conditions testify the relations between thicknesses of wear debris and positive pressure of the tribological system. The fractal relation between maximal thickness of wear debris and positive pressure is discussed. The conceptions of the immutability principle and charac- teristic granularity of wear debris thickness are brought forward and discussed. In conclusion, as a stable tribological parameter owning mechanical theory basis, wear debris thickness will play an im- portant part in fault diagnosis, especially for the airtight system such as artificial joint.

关键词：摩擦学磨损面厚度分形数学模型