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Revisions of Convolution Model of Reflected Seismic Wave

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Chinese Physics Letters 1998年第11期15卷 851-853页

作者： huang guang-yuan Institute of Mathematics Shandong UniversityJi’nan 250100

The convolution model of reflected wave used in exploration physics has no serious physical concept and mathematical *** phenomena should be characterized by instantaneous spectrum in physics and a complex function of three real variables(*** frequency)in *** coefficient is also a complex function of place and *** new formulas instead of convolution model are *** on wavelet transform and a method of“3 basis colors”,new color sectional image is obtained from practical data.

关键词： convolution sectional Wave

Effect of Kupffer cells on immune tolerance in liver transplantation

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Asian Pacific Journal of Tropical Medicine 2012年第12期5卷 970-972页

作者： guang-shun Chen Hai-Zhi Qi Second Xiangya Hospital of Central South University

Objective:To observe the effect of Kupfler cells on immune tolerance in liver transplantation. Methods:The rats were randomly divided into A,B and C groups.A group was sham operation *** donor rats of group B had intraperitoneal injection of 1 nmol Kuppffer cells every other day for three days before liver *** of group C were injected with equal *** rat liver transplantation models were established by modified Kamada’s two-cuff *** rats were sacrificed after 24 *** concentrations of ALT and AST in serum were measured with the biochemical *** level of IL-2 and TNF- a in serum were measured by ELISA *** apoptotic indexes were detected by immunohistochemical assay. Results:The concentration of ALT,AST,IL-1 and TNF- a in A,B and C groups were increased *** levels of group C were significantly higher than that of group B and A(P<0.05), and the levels of group B were significantly higher than that of group A(P<0.05).The apoptotic indexes of three groups were 3.40±0.37,14.70±2.54 and 26.33±3.65,respectively,with significant difference among three groups(P<0.05).Conclusions:Pretreatment with Kupfler cells can reduce liver injury and raise liver transplantation immune tolerance.

关键词： Kupffer cell Liver transplantation Immune tolerance

Counterion-Mediated Hydrogen Bonding Making Strong Polyelectrolytes pH-Responsive:Current Understanding and Perspectives

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Chinese Journal of Polymer Science 2024年第9期42卷 1270-1277,I0005页

作者： Yue huang guang-Tao Mei Zan Hua guang-Ming Liu Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical PhysicsKey Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesUniversity of Science and Technology of ChinaHefei230026China The Key Laboratory of Functional Molecular Solids Ministry of Educationand Department of Materials ChemistrySchool of Chemistry and Materials ScienceAnhui Normal UniversityWuhu214002China

The counterion-mediated hydrogen bonding(CMHB)is related to the hydrogen bonding between bound counterions and polyelectrolyte chains in polyelectrolyte systems,where the counterions can both electrostatically bind to the charged groups of polyelectrolyte chains and act as hydrogen bond donors or acceptors to form hydrogen bonds with the hydrogen bond sites associated with polyelectrolyte chains simultaneously.A large number of literatures illustrate that strong polyelectrolytes(SPs)are insensitive to pH,which severely limmits the applications of SPs as smart ***,our studies have demonstrated that the CMHB makes SPs *** perspective discusses the mechanism of pH responsiveness of SPs and the pH-tunable properties of SPs,based on the pH-controlled CMHB *** future research directions on the pH responsiveness of SPs are also discussed *** is anticipated that the study of the pH responsiveness of SPs not only will provide a new understanding of the fundamental properties of SPs,but also will greatly expand the applications of SPs in the field of smart materials.

关键词： Counterion binding Hydrogen bond Polyelectrolyte brush Polyelectrolyte complexation

Impact of and adaptation strategies for sea-level rise on Yangtze River Delta

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Advances in Climate Change Research 2018年第2期9卷 154-160页

作者： WANG Qiu-shun PAN Cun-Hong ZHANG guang-Zhi Zhejiang Institute of Hydraulics and Estuary Hangzhou 310020 China Zhejiang Institute of Marine Planning and Design Hangzhou 310020 China

The Yangtze River Delta characterized by a dense population and a rapidly developing economy is highly vulnerable to sea-level rise. The data from the China Oceanic Information Network and the Zhejiang Provincial Hydrology Bureau are used to analyze sea-level rise. The rate of sea-level rise in the delta was 2.4 mm per year in 1981-2015. The annual sea-level at Daishan, Dinghai, and Dongtou stations in the south wing of the delta were 4.3, 3.1, and 5 mm per year respectively over the same period. The 10-year averaged results at each station also indicate a perceptible trend of sea-level rise. Sea-level rise is contributed to a larger proportion of intensified erosion, ranging from 3% to 14% in the delta. Meanwhile, the 100-year return period of tidal level has decreased to the 50-year rank at Dongtou and Dinghai stations. Moreover, the arrival time of tidal bores at Yanguan is 4 min earlier under sea-level rise of 0.145 m than that of 0 m. The height of tidal bores and the velocities at the surface and bottom layers have an increase under sea-level rise. The maximum increases of high and low tide levels are 0.122 m and 0.016 m while the maximum increases of the velocities at the surface and bottom layers are 0.07 m s^- 1 and 0.05 m s ^-1, respectively. Sea-level rise will bring about the damage of seawall, thus the design standard of constructing seawalls should adopt a higher level to minimize the associated risks in the Yangtze River Delta and its south wing.

关键词： Coastal erosion Sea-level rise Saltwater intrusion Tidal bore Yangtze River Delta Zhejiang province

NEW ALGORITHM OF COUPLING ELEMENT-FREE GALERKIN WITH FINITE ELEMENT METHOD

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Applied Mathematics and Mechanics(English Edition) 2005年第8期26卷 982-988页

作者： ZHAO guang-ming（赵光明） SONG shun-cheng（宋顺成） Department of Applied Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 P. R. China Department of Resource Exploration and Management Engineering Anhui University of Science and Technology Huainan 232001 Anhui Province P. R. China

Through the construction of a new ramp function, the element-flee Galerkin method and finite element coupling method were applied to the whole field, and was made fit for the structure of element nodes within the interface regions, both satisfying the essential boundary conditions and deploying meshless nodes and finite elements in a convenient and flexible way, which can meet the requirements of computation for complicated field. The comparison between the results of the present study and the corresponding analytical solutions shows this method is feasible and effective.

关键词： element-free Galerkin method coupling ramp function finite element

RELAXED ASYNCHRONOUS ITERATIONS FOR THE LINEAR COMPLEMENTARITY PROBLEM

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Journal of Computational Mathematics 2002年第1期20卷 97-112页

作者： Zhong-zhi Bai Yu-guang huang LSEC ICMSECAcademy of Mathematics and Systems SciencesChinese Academy of SciencesBeijing 100080China Oxford University Computing Laboratory Wolfson BuildingParks RoadOxford OX1 3QDU.K.

Presents a class of relaxed asynchronous parallel multisplitting iterative methods for solving the linear complementarity problem on multiprocessor systems. Establishment of the methods; Convergence theories; Numerica... 详细信息

关键词： linear complementarity problem matrix multisplitting relaxation method asynchronous iteration convergence theory

Numerical study on DPM dispersion and distribution in an underground development face based on dynamic mesh

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International Journal of Mining Science and Technology 2020年第4期30卷 471-475页

作者： Ping Chang guang Xu Jinxin huang WA School of Mines MineralsEnergy and Chemical EngineeringCurtin UniversityKalgoorlieWA 6430Australia Department of Mining Engineering Missouri University of Science and TechnologyRollaMO 65409USA

In 2012,the International Agency for Research on Cancer(IARC)classified diesel particulate matter(DPM)as a carcinogen to *** the increased usage of diesel equipment in underground mines,miners have a high risk of over-exposure to DPM,which has drawn many concerns from the *** study used computational fluid dynamics(CFD)to analyse the DPM dispersion and concentration distribution characteristics in an underground development face based on an onsite *** DPM emitted from a moving loader under a forcing auxiliary ventilation system was *** motion of the load-haul-dump(LHD)in the tunnel was represented by a dynamic mesh *** species transport approach was applied to study the DPM *** DPM concentration zones were then identified based on the simulation *** results could provide guidelines for work practices and be helpful to an optimum auxiliary ventilation design to reduce underground miner exposure.

关键词： Diesel particulate matter Underground mines Ventilation Computational fluid dynamics Dynamic mesh

3D analysis for pit evolution and pit-to-crack transition during corrosion fatigue

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第4期14卷 292-299页

作者： Xiao-guang huang Jin-quan XU Department of Engineering Mechanics China University of Petroleum Department of Engineering Mechanics Shanghai Jiao Tong University

This paper presents a deterministic model to predict the pit evolving morphology and crack initiation life of corrosion *** on the semi-ellipsoidal pit assumption,the thermodynamic potential including elastic energy,surface energy and electrochemical energy of the cyclically stressed solid with an evolving pit is established,from which specific parameters that control the pit evolution are introduced and their influence on the pit evolution are *** critical pit size for crack nucleation is obtained from stress intensity factor criterion and the crack nucleation life is evaluated by Faraday's ***,this paper presents a numerical example to verify the proposed model and investigate the influence of cyclic load on the corrosion fatigue crack nucleation *** corrosion pit appears approximately as a hemisphere in its early formation,and it gradually transits from semicircle to *** strain energy accelerates the morphology evolution of the pit,while the surface energy decelerates *** higher the stress amplitude is,the smaller the critical pit size is and the shorter the crack initiation life is.

关键词： Pit Evolving morphology Thermodynamic potential Critical pit size Crack nucleation

NUMERICAL SIMULATIONS OF A CENTERED CONDUCTING BODY ON NATURAL CONVECTION AND HEAT TRANSFER IN AN ENCLOSURE

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Journal of Hydrodynamics 2005年第5期17卷 539-545页

作者： LI guang-zheng huang Jian-chun College of Civil Engineering and Mechanics Huazhong University of Science and Technology Wuhan430074 China

Numerical simulations are performed for laminar natural convection heat transfer from a centered conducting body enclosed in a square cavity. A high accuracy un steady numerical method is used, combining the unique condition of the pressure, the convergent solutions and the streamfunction value of the inside heat conducting body are given simultaneously. Two examples are simulated with this numerical method and compared with the experimental results. The results of the numerical solutions are consistent with the experimental results. It shows that the numerical method is valid and feasible.

关键词： natural convection in an enclosure inside heat conducting body stream value of solid walls unsteady numerical method