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Analysis and application of the scale effect of flood discharge atomization model

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Science China(Technological Sciences) 2011年第S1期54卷 64-71页

作者： WU ShiQiang 1,WU XiuFeng 1,2.ZHOU Hui 1,CHEN HuiLing 1,SHA HaiFei 1 & ZHOU Jie 1 1 State Key Laboratory of hydrology-Water resources and Hydraulic Engineering,nanjing Hydraulic {2. institute,nanjing 2.002.,China 2.hohai university,nanjing 2.0098,China 1. State Key Laboratory of hydrology-Water resources and Hydraulic Engineering Nanjing Hydraulic Research Institute Nanjing 210029 China 2. hohai university Nanjing 210098 China

The phenomenon of discharge atomization occurs as hydraulic structures discharging,which influences the safety of power station,electrical equipment and produces environmental pollution.A series of physical model tests and feedback analysis are adapted to preliminarily study the scale effect of discharge atomization model by use of the field observation data of discharge *** effect of Re and We numbers of flow on the atomization intensity is analyzed.A conversion relationship of atomization intensity between prototype and model results and the similarity criteria of the atomization range are developed. The conclusion is that the surface tension of discharge atomization model could be ignored when the Weber number is larger than *** case studies are given by use of the similitude criteria of the atomization model.

关键词： discharge atomization scale effect energy dissipation model test feedback analysis

Back analysis of mechanical parameters of roller compacted concrete dam

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Science China(Technological Sciences) 2010年第3期53卷 848-853页

作者： GU ChongShi 1,2.3,LI Bo 1,XU GuangLei 4 &YU Hong 1,2.3 1 State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering,hohai university,{2.,China 2.ollege of Water Conservancy Hydropower,hohai university,{2.,China 3National Engineering research Center of Water Resources Engineering Safety,Efficient Utilization and {2.,China 4 nanjing Hydraulic research institute,nanjing 2.002.,China 1. State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China2. College of Water Conservancy Hydropower Hohai University Nanjing 210098 China3. National Engineering Research Center of Water Resources Engineering Safety Efficient Utilization and Nanjing Nanjing 210098 China4. Nanjing Hydraulic Research Institute Nanjing 210029 China

In view of the diversity and complexity of mechanical parameters of roller compacted concrete dam(RCCD),the uniform design method,partial least-squares regression(PLS)and least squares support vector machine(LSSVM)were applied to the back analysis of RCCD with the use of the complex nonlinear relationship between dam mechanical parameters and dam *** the process of back analysis,the initial samples of parameters were designed with uniform design ***,a transversely isotropic model of RCCD was established by *** *** this model,training samples of LSSVM model could be *** then,the complex nonlinear relationship between relative values of hydraulic components of dam displacements and mechanical parameters was ***,actual relative values of dam hydraulic components are isolated from the measured data of dam displacements by using *** inputting the isolated relative values into LSSVM model,the back analysis values of RCCD mechanical parameters can be *** example analysis showed that mechanical parameters obtained by the above-mentioned back analysis method are reasonable,and the back analysis method is feasible.

关键词： roller compacted concrete dam mechanical parameters back analysis

Application analysis of empirical mode decomposition and phase space reconstruction in dam time-varying characteristic

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Science China(Technological Sciences) 2010年第6期53卷 1711-1716页

作者： ZHANG ZhiJun1,2.3,GU ChongShi1,2.BAO TengFei1,2.ZHANG Lan1,2.& YU Hong1,2.1 State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering,hohai university,{2.,China 2.National Engineering research Center of Water Resources Efficient Utilization and Engineering Safety,hohai university,{2.,China 3 Department of Civil,Environmental and Geomatic Engineering,Swiss Federal institute of Technology,Zurich 8093,Switzerland 1. State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China2. National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Hohai University Nanjing 210098 China3. Department of Civil Environmental and Geomatic Engineering Swiss Federal Institute of Technology Zurich 8093 Switzerland

In view of some courses of the time-varying characteristics processing in the analysis of dam deformation,the paper proposes a new method to analyze the dam time-varying characteristic based on the empirical mode decomposition and phase space reconstruction *** of all,to reduce the influences on the traditional statistical model from human factors and assure the analysis accuracy,response variables of the time-varying characteristic are obtained by the way of the empirical mode decomposition;and then,a phase plane of those variables is reconstructed to investigate their processing *** methods have already been applied to an actual project and the results showed that data interpretation with the assists of empirical mode decomposition and phase space reconstruction is effective in analyzing the perturbations of response variables,explicit in reflecting the entire development process,and valid for obtaining the evolution rules of the time-varying *** methodology is a powerful technical support for people to further master the rules of dam operation.

关键词： dam safety monitoring dam time-varying characteristic empirical mode decomposition phase space reconstruction

Total control-based unified allocation model for allowable basin water withdrawal and sewage discharge

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Science China(Technological Sciences) 2010年第5期53卷 1387-1397页

作者： HU SiYi1,2.WANG ZongZhi1,WANG YinTang1 & ZHANG LingLing3 1 State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering,nanjing Hydraulic {2. institute,nanjing 2.002.,China 2.Ministry of Water Resources,the People’s Republic of China,Beijing 100053,China 3 School of Public Administration,hohai university,nanjing 2.0098,China 1. State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research Institute Nanjing 210029 China2. Ministry of Water Resources the People’s Republic of China Beijing 100053 China3. School of Public Administration HoHai University Nanjing 210098 China

In this paper,a new model with a total amount control target of allowable water withdrawal based on initial water right is built for the implementation of initial water right allocation scheme as well as unified allocation for allowable water withdrawal and sewage *** model couples the water allocation simulation model and the computational model of permissible pol-lution bearing *** view of the model complexity,a new technology which synthesizes system simulation,iterative reservoir turns and intelligent computation is proposed to improve the operability of allocation scheme and computational *** the Beijiang River Basin in the Pearl River Basin as an example,the study explains the model establishment,solution and application,and draws an optimized operation graph of large-scale *** study also obtains a long-term operation strategy of river basin water resources system,the allocation schemes of allowable water withdrawal and sewage discharge in a typical year and the flow hydrographs of trans-boundary *** validity of the model and the allocation rationality are analyzed as well.

关键词： water resources management total control unified control of water withdrawal and sewage discharge optimized regulation integration technology

Novel ^(99m)Tc labeled σ r eceptor ligand as a potential tumorimaging agent

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Science China Chemistry 2006年第2期49卷 169-176页

作者： FAN Caiyun1, JIA Hongmei1, Deuther-Conrad Winnie2. Brust Peter2. Steinbach J?rg2.& LIU Boli1 1. Key Laboratory of Radiopharmaceuticals (Beijing Normal university), Ministry of Education, Department of Chemistry, Beijing Normal university, Beijing 100875, China 2. {2. of Interdisciplinary isotope research, Permoserstr. 15, 04318 Leipzig, Germany Correspondence should be addressed to Liu Boli 1. Key Laboratory of Radiopharmaceuticals (Beijing Normal university) Ministry of Education Department of Chemistry Beijing Normal University Beijing 100875 China 2. institute of Interdisciplinary isotope {2. Permoserstr. 15 04318 Leipzig Germany

A novel ^(99m)Tc labeled complex,[N-[2.((2.oxo-2.(4-(3-phenylpropyl)piperazin-1-yl)ethyl)(2.mercaptoethyl)amino)acetyl]-2.aminoethanethiolato]Technetium(Ⅴ) oxide (PPPE-MAMA''-^(99m)TcO)([^(99m)Tc]-2. has been designed and prepared based on the integrated approach. The correspondingrhenium complex (PPPE-MAMA''-ReO)(Re-2. has been prepared and characterized. In vitro competitionbinding assays show moderate affinity of Re-2.towards σ_1 and σ_2.receptors with K_i values of8.67 ± 0.07 and 5.71 ± 1.88 μmol, respectively. Planar images obtained at 0.5 h, 4 h, 2. h afteri.v. injection indicate the accumulation of [^(99m)Tc]-2.in MCF-7 human breast tumor bearing mice at2. h. Furthermore, the accumulation of [^(99m)Tc]-2.has been inhibited at 2. h after co-injectionof [^(99m)Tc]-2.plus haloperidol (1 mg/kg). Biodistribution studies of [^(99m)Tc]-2.display an invivo tumor uptake of 0.14% ± 0.01% ID/g at 2. h post i.v. injection with a tumor/muscle ratio of6.02.± 0.87. The above results suggest that [^(99m)Tc]-2. derived from a previously published leadcompound, retains certain tumor uptake and affinity for σ receptors. [^(99m)Tc]-2.may be used as abasis for further structural modifications to develop tumor imaging agents with high affinity for σreceptors.

关键词： tumor σ receptor SPECT ^(99m)Tc

Differential Hydrological Grey Model (DHGM) with self-memory function and its application to flood forecasting

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Science China(Technological Sciences) 2009年第4期52卷 1039-1049页

作者： CHEN XiangDong1, XIA Jun1,2.& XU Qian3 1 Key Laboratory of Water Cycle and Related Land Surface Processes, institute of Geographic Sciences and Natural Resources research, Chinese Academy of Sciences, Beijing 100101, China 2.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan {2., Wuhan 430072. China 3 School of hydrology and Water Resources, hohai university, nanjing 2.0098, China 1. Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China 2. State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 China 3. School of hydrology and Water Resources Hohai University Nanjing 210098 China

This paper addresses a problem of flood forecasting with the self-memory function. Considering flood forecasting’s uncertainty and updating demand, a hybrid hydrological model, namely Differential Hy- drological Grey Model with self-memory function (DHGM-SM), is developed. The model has two fold features. One is to establish a self-memorization equation linked with DHGM, that could extract useful information from past data series and realize updating of hydrological dynamic process. The other is that this model has higher efficiency relative to original hydrological model without self-memory func- tion. This approach was applied to river flow forecasting of two representative basins in Tunxi of South China and Daqinggou of North China. It is shown that this hybrid method has satisfactory forecasting accuracy by examination of both calibration and validation.

关键词： differential grey model the self-memorization principle real-time forecasting faded-memory recursive least square method

Simulating the impacts of climate variation and land-cover changes on basin hydrology: A case study of the Suomo basin

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Science China Earth Sciences 2005年第9期48卷 1501-1509页

作者： CHEN Junfeng1,2. LI Xiubin2.& ZHANG Ming2.1. institute of Remote Sensing & GIS, Peking university, Beijing 100871, China 2. institute of Geographical Sciences and Natural Resources research, Chinese Academy of Sciences, Beijing 100101, China 1. institute of Remote Sensing & GIS Peking University 100871 Beijing China 2. institute of Geographical Sciences and Natural Resources research Chinese Academy of Sciences 100101 Beijing Chin

Impacts of land cover changes on watershed hydrology have been a long-term academic concern with acute dispute. But little attention has been paid to such effects on mesoscale river basins, where the society has a closer link to river hydrology. The present study focuses on a mesoscale river basin, the Suomo Basin that is located on the upper reaches of the Yangtze River. Land covers in the basin in the years 1970, 1986 and 1999 were mapped. A lumped hydrologic model, CHARM, and a distributed hydrologic model, SWAT, were used to model the impacts of both land-cover change and climate variation on river runoff during the past four decades. The results show that the contribution of climate variation to the change of runoff regime makes up 60%―80%, while that of land cover changes only 2.%.

关键词： climate variation, land-cover changes, Suomo Basin, CHARM model, SWAT model.

The history of crustal uplift and metamorphic evolution of Panzhihua-Xichang micro-palaeoland, SW China:Constraints on Sm-Nd, ^(40)Ar/^(39)Ar and FT ages of granulites

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Science China Earth Sciences 2004年第8期47卷 689-703页

作者： XU Shijin1, LIU Wenzhong1, WANG Rucheng1, YU Hangbo1, LI Daming2. WAN Jinglin2.& FANG Zhong1 1. Department of Earth Sciences and State Key Laboratory for Mineral Deposits research, nanjing {2., nanjing 2.0093, China 2. institute of Geology, China Seismological Bureau, Beijing 10002., China 1. Department of Earth Sciences and State Key Laboratory for Mineral Deposits research Nanjing University 210093 Nanjing China 2. institute of Geology China Seismological Bureau 100029 Beijing China

Panzhihua-Xichang (Panxi) micro-palaeoland is the oldest terrane on the western margin of the Yangtze Block. Some intermediate-basic granulites are considered to be the crys-talline basement of lower crust in the terrane. Granulite-facies metamorphism of the granulites was developed in the period from 1186 Ma to 112. Ma. The origin of granulites was related to the collision orogenic process occurring when the micro-palaeolands merged to form the Rodinia Supercontinent. Amphibolite-facies retrogressive metamorphism of granulites took place in the period from 877 Ma to 82. Ma. This period was consistent with the breakup time of the Rodinia Supercontinent. 40Ar/39Ar ages and fission track (FT) ages of granulites in the Panxi mi-cro-palaeoland show that the vertical movement history of crustal rocks was a slow uplift process of the rigid terrane in the time from Neoproterozoic to Mesozoic. The subduction of India Plate towards Euroasia Plate resulted in the rapid uplift of the Qinghai-Tibetan Block in Cenozoic. Meanwhile, the Qinghai-Tibetan Block moved towards east. Consequently the Panxi terrane was uplifted rapidly. As a result of the collision orogeny between the Qinghai-Tibetan Block and the Panxi terrane, the granulite-facies crystalline basement in this region was exhumed and exposed to the surface.

关键词： granulite,isotope geochronology,crustal uplift movement,Panzhihua-Xichang region,western margin of Yangtze Block.

Temporal variation of suspended sediment load in the Pearl River due to human activities

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International Journal of Sediment research 2011年第4期26卷 487-497页

作者： Wei ZHANG,Shousheng MU,Yanjing ZHANG,and Kaimin CHEN 1 Assoc.Prof.,State Key Laboratory of hydrology-Water Resources and Hydraulic Engineering,hohai university, {2.,2.0098,China, 2.4 Graduate student,College of Harbor,Coastal and Offshore Engineering,hohai university,{2.,2.0098, China 3 Prof.,China institute of Water Resources and Hydropower research,Beijing,100038,China [a] Assoc. Prof. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China [b] Graduate student College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China [c] Prof. China Institute of Water Resources and Hydropower Research Beijing 100038 China [d] Graduate student College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 China

Data on sediment flux at three hydrologic stations from the 1950s to 2.06 are utilized to study the decadal,annual,and monthly variations in suspended sediment load delivered from the Pearl River to the *** show that variations in sediment flux from three main tributaries,including the West River,the North River and the East River,are spatially *** nearly 90%of the suspended sediment load comes from the West River,its variation has dominated the overall tendency of sediment flux in the entire Pearl *** a significant decreasing trend exists in the annual variation of the total sediment flux,the decadal change can be divided into an increasing phase and a decreasing phase,with the turning point between the two phases in the late *** the 1950s to the 1980s,the average annual river sediment flux increased by 30.43%.However,sediment flux has decreased significantly since the 1990s,with the average sediment flux being 38.60%less in the 2.00s than that in the *** current sediment flux is also 52.93%less than its peak in the 1980s. The monthly variation pattern of the suspended sediment load transport to the sea is more interesting. For the West River,all months show a decreasing trend,and for most months the reduction values are ***,for the East River the sediment load shows a decrease trend in the dry season and an increase trend in the wet *** method of regression analysis was used to study the influence of precipitation in the variation on the sediment *** was found that the climate change is not the main driving force behind the variation in suspended sediment *** the 1990s, intensive land use destroyed the vulnerable ecosystem of the upper Pearl River,and speeded up the process of rocky ***,aggravated soil erosion caused an increase in suspended sediment ***,sediment retention within reservoirs had begun to play a dominant role after the massive constru

关键词： Pearl River Sediment flux Human activities Rocky desertification Dam construction