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| 1 | Influence of the impounding process of the Three Gorges Reservoir up to water level 172.5m on water eutrophication in the Xiangxi Bay显示文摘The water level of the Three Gorges Reservoir(TGR) rose to 172.5 m in two stages from September to November,2008.The hydrodynamic parameters and water quality parameters(e.g.flow velocity,temperature,turbidity and nutrient content) had been continuously monitored to reveal the influence of the impounding process of the TGR on the water eutrophication in the Xiangxi Bay(XXB).The maximal daily rise of the water level of the TGR was about 2.38 m.The water exchange between the mainstream(the Changjiang River) and the XXB of the TGR was enhanced by density current,and its main characteristics were a density-stratified flow in different directions.The water exchange reduced the differences of the water quality parameters(for example,temperature,turbidity,nutrient level,pH,etc.) between the mainstream and the XXB during the impounding process.Meanwhile,the water stability index in the mainstream remained small but it was lowered in the XXB.The main causes included the dilution by water of lower concentration of the chlorophyll a(Chl.a) entering from the mainstream,the decline of the water stability,and the increase of suspended silt,which induced the Chl.a to decrease in the XXB during the impounding process.The grade of the water eutrophication changed from middle eutrophic level to mesotrophic state in the process.However,as available nutrients were imported into the XXB from the mainstream during the impounding process the risk of water eutrophication increases in the XXB in the future. | YANG ZhengJian1,LIU DeFu1,JI DaoBin1,2 & XIAO ShangBin1,3 1 College of Civil & Hydroelectric Engineering,China Three Gorges University,Yichang 443002,China 2 School of Water Resources & Hydropower Engineering,Wuhan University,Wuhan 430072,China 3 Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China | 2010 | Science China(Technological Sciences)2010，53，4： | 58 |
| 2 | Discontinuous deformation analysis based on complementary theory显示文摘The contact between blocks is treated by the open-close iteration in the conventional discontinuous deformation analysis (DDA),which needs to introduce spurious springs between two blocks in contact and to assume the normal stiffness and the tangential stiffness (the penalty factors). Unreasonable values of stiffness would result in numerical problems. To avoid the penalty factors and the open-close iteration,we reformulate the DDA as a mixed complementary problem (MiCP) and then choose the path Newton method (PNM) to solve the problem. Some examples including those originally designed by Shi are reanalyzed,which proves feasibility of the proposed procedure. | ZHENG Hong1,2 & JIANG Wei2 1 China Three Gorges University,Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education, Yichang 443002,China 2 State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China | 2009 | Science China(Technological Sciences)2009，52，9： | 15 |
| 3 | Visible light-induced N-doped TiO_2 nanoparticles for the degradation of microcystin-LR显示文摘N-doped nano-crystalline TiO2 powders have been synthesized by the sol-gel method.The shape and crystal structure of the resulting N-doped TiO2 were investigated by X-ray Photoelectron Spectroscopy (XPS),X-ray spectroscopy (XRD),Transmission Electron Microscopy (TEM) and UV-vis reflection spectrum.The results showed that doping TiO2 with nitrogen can lower its band gap and apparently shift its optical response to the visible region.Under the visible light (λ> 420 nm) irradiation,the MC-LR was degraded by the synthesized N-TiO2 nano-material.The variation of MC-LR amount and its intermediates were detected by high performance liquid chromatography (HPLC) and LC-MS,respectively.The mineralization of MC-LR was determined by total organic carbon (TOC) analysis.Simultaneously,transient oxidative species generated during photocatalysis were tracked by electron spin resonance (ESR) and Peroxidase method.All these results indicated that visible-light excited N-TiO2 can activate molecular oxygen and thereby achieve degradation of MC-LR completely within 14 h.The removal of 59% of TOC was achieved after 20 h irradiation.The major oxidative species in the system were hydroxyl radical (·OH) and H2O2.13 Kinds of intermediates were primarily identified in the process.Based on these results,a reasonable conclusion was drawn for the degradation of MC-LR wherein its four positions are easy to be attacked by the photo-generated OH radical followed by the hydrolyzation of peptides. | YANG Jing,CHEN DengXia,DENG AnPing,FANG YanFen,LUO GuangFu,LI DeJiang,LI RuiPing & HUANG YingPing Alan G.MacDiarmid Research Institute of Renewable Energy,China Three Gorges University,Yichang 443000,China | 2010 | Science China Chemistry2010，53，8： | 12 |
| 4 | Coupling analysis of unsteady seepage and stress fields in discrete fractures network of rock mass in dam foundation显示文摘The drag force of water flow through single fracture and the coupling characteristics of seepage and stress in single fracture surface are analyzed,and a three dimensional model of coupled unsteady seepage and stress fields is proposed.This model is used to the analysis of foundation rock mass of a high dam.If the coupling effects are considered,the changes of boundary heads have less influence on the inner head of rock mass,and the strong permeability of main fractures appears.If the coupling effects are not considered,the fractures distribution affects the inner head more greatly.When the upstream water head declines,the inner head of dam foundation slightly declines and the hydraulic gradient distribution becomes smoother.A bigger upstream water level declining velocity has a stronger lag effect,meanwhile the values of stress components change more greatly.Therefore the upstream water level declining velocity directly affects the stability of rock mass in dam foundation and we should take into account the above factors to make sure the safety of the dam during reservoir level fluctuation period. | CHAI JunRui 1,2 & XU WeiSheng 2 1 College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China 2 College of Hydropower Engineering,Xi’an University of Technology,Xi’an 710048,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 11 |
| 5 | Ecological hydrograph based on Schizothorax chongi habitat conservation in the dewatered river channel between Jinping cascaded dams显示文摘Hydropower development changes the river hydrological regime,thereby altering river ecosystem significantly.One important measure for reducing degradation of ecosystem is to determine ecological flow and implement it by reservoir operation.This paper described a method to calculate river ecological flow based on fish habitat conservation and applied it to Jinping River Bend of Yalong River.Schizothorax chongi was selected as target species,and the fish habitat model coupling with water environmental model was developed according to the relationship between fish and water environment factors.Moreover,improved hydraulic habitat suitability index(IHHS) and habitat fragment index(HFI) varying with discharge were discussed in this paper.Habitat area representing average annual flow was taken as a reference,and then ecological hydrographs under different habitat conservation levels were calculated considering season variation and life stages of fish.Compared to the natural condition,the model results indicated that the reservoir operation clearly influenced the habitat of the target fish.It was proposed to ensure flow releases to maintain 70%-90% habitat in section after joint while about 60% before joint. | LI RuoNan 1,CHEN QiuWen 1,2 & Duan Chen 1,3 1 Research Center for Eco-environmental Science,Chinese Academy of Sciences,Beijing 100085,China 2 China Three Gorges University,Yichang 443002,China 3 Hydraulics Department,Changjiang River Scientific Research Institute,Wuhan 430010,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 10 |
| 6 | Run by Run Control of Time-pressure Dispensing for Electronics Encapsulation显示文摘To alleviate the influence of gas compressibility on the process performance of time-pressure dispensing for electronics encapsulation, a predictive model is developed based on power-law fluid to estimate the encapsulant amount dispensed. Based on the simple and effective model, a run by run (RbR) supervisory control scheme is delivered to compensate the variation resulting from gas volume change in the syringe. Both simulation and experiment have shown that the dispensing consistency has been greatly improved with the model-based RbR control strategy developed in this paper. | Cong-Ping Chen~(1,*) Han Ding~2 1 College of Mechanical & Materials Engineering, China Three Gorge University, Yichang 443002, PRC 2 School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PRC | 2008 | International Journal of Automation and computing2008，5，4： | 5 |
| 7 | Anisotropic damage coupled modeling of saturated porous rock显示文摘It is widely acknowledged that the natural rock mass is anisotropic and its failing type is also non-isotropic. An orthotropic elastic damaged model has been proposed in which the elastic deformation,the damaged deformation and irreversible deformation can be identified respectively. A second rank damage tensor is employed to characterize the induced damage and damage evolution related to the propagation conditions of microcracks. A specific form of the Gibbs free energy function is used to obtain the effective elastic stiffness and the limited scopes of damage parameters are suggested. The model’s parameter determination is proposed by virtue of conventional tri-axial test. Then,the proposed model is developed to simulate the coupled hydraulic mechanical responses and traction behaviors in different loading paths of porous media. | LU YingFa1,2, WU XinXing1,2 & SHAO JianFu3 1 Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China 2 School of Civil Engineering, Wuhan University, Wuhan 430071, China 3 University of Sciences and Technologies of Lille, Lille 59655, France | 2010 | Science China(Technological Sciences)2010，53，10： | 5 |
| 8 | THE APPLICATIONS AND STUDY OF NUMERICAL SIMULATION OF TURBULENCE FLOW WITH FREE SURFACE IN HYDRAULIC SPILL WAYS STRUCTURE显示文摘The turbulence flow Free Surface has important applications in hydraulic spillways structure,such as the hydraulic jump,energy dissipation flow etc.This is being considered as very complicated flow,and has not yet been solved quite well by numerical method. In this paper,a Large-scale computational software package are developed for numerical laboratory of hydraulic spillway structure.Some methods,such as turbulence model, free surface and irregular boundary treating techniques,scientific computer visualization are put forward and performed. | Dai Hui-chaoChina Yangtze Three Gorges Project Development Corporation,Yichang 443002,P. R.China | 1997 | Journal of Hydrodynamics1997，9，4： | 5 |
| 9 | Global analysis on slope stability and its engineering application显示文摘In hydraulic engineering, sometimes it is necessary to consider the stability of sliding bodies with lateral frictional boundaries. Neither the existing three dimensional limit equilibrium methods nor the commercial software products are able to treat such situations. The three dimensional factor of safety is accordingly underestimated; while the shearing strength based on the three dimensional back analysis is overestimated. In this study, the lateral boundaries are regarded as the part of the slip surface. Based on the expression of the normal pressure on the slip surface and the patch interpolation, a rigorous solution for the three dimensional limit equilibrium analysis is realized. Meanwhile, the proposed procedure is applied to the stability analysis of the slope with a cable platform on the right bank in Da Gang Shan hydraulic project under construction. | ZHENG Hong1,2 & ZHOU ChuangBing3 1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan 430071, China 2 China Three Gorges University, Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, Yi Chang 443002, China 3 School of Civil Engineering, Wuhan University, Wuhan 430072, China | 2009 | Science China(Technological Sciences)2009，52，2： | 4 |
| 10 | Daily optimized model for long-term operation of the Three Gorges-Gezhouba Cascade Power Stations显示文摘This paper presents the step-by-step genetic algorithm based on artificial intelligence guidance and builds a long-term daily optimized operating model for the Three Gorges-Gezhouba Hydropower Complex with single generating set as the based operating unit. Actual operating data from 2004 to 2006 are used to verify the model, and results show that the simulation accuracy determined by measuring the total amount of cascade power generation reaches 99.66%. Statistic hydrological data of normal years and actual data of three years of 2004―2006 are respectively used to perform an optimized prediction of the power generation process and benefits in future when the water stored in the TGP Reservoir reaches 175 m level and power generation benefits under different operation modes, such as delayed subsiding water level, advance water storage, and adopting of different flood-limited water levels, are forecasted. In the case of years with normal inflows, the total amount of cascade power generation running on current specifications reaches 107500 GWh per year. If the commencement of water storage after the flood season is moved forward by 20 days, the amount of power generation can be increased by 3400 GWh per year. If the limited water level in the flood season is raised by three to five meters, the amount of power generation can be increased by 1600 to 3200 GWh per year. If the commencement of water storage is moved forward while the maximum water level allowed in the flood season is raised, the amount of power generation can be increased by 6400 GWh per year. | CAO GuangJing1, CAI ZhiGuo1?, LIU ZhiWu1 & WANG GuangQian2 1 China Three Gorges Project Corporation, Yichang 443002, China 2 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China | 2007 | Science China(Technological Sciences)2007，50，z1： | 4 |
| 11 | Numerical simulation of two-phase turbulent flow in hydraulic and hydropower engineering显示文摘In connection with the specific features of high velocity aerated flow generated by hydraulic engineering structures, the mathematical model is developed for high turbulence air-water two-phase flow with the use of twin flow theoretical model in this paper. Furthermore the numerical method is proposed to treat bubbled flows. In addition, on the basis of air-water stratified twin flow model, the new calculation methods and free surface tracking technique are proposed to describe complicated movements of the free surface. Finally, the proposed model is used to calculate artificial aerated flows. The computed results coincide quite well with experimental results. This means that the proposed method can provide solid basis for practical engineering design. | DAI HuiChao1,2?, WANG LingLing1, GAO JiZhang3, ZHANG XiaoDong3 & YANG ZhongHua2 1 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China 2 China Yangtze River Three Gorges Project Development Corporation, Yichang 443002, China 3 China Institute of Water Resources and Hydropower Research, Beijing 100044, China | 2007 | Science China(Technological Sciences)2007，50，z1： | 3 |
| 12 | 小P值并不能保证可靠结果:以帕金森病的静息态脑功能成像元分析为例显示文摘Thousands of resting state functional magnetic resonance imaging(RS-f MRI)articles have been published on brain disorders.For precise localization of abnormal brain activity,a voxel-level comparison is needed.Because of the large number of voxels in the brain,multiple comparison correction(MCC)must be performed to reduce false positive rates,and a smaller P value(usually including either liberal or stringent MCC)is widely recommended[1]. | 贾熙泽 赵娜 董昊铭 孙家伟 Marek Barton Roxana Burciu Nicolas Carrière Antonio Cerasa 陈博宇 陈俊 Stephen Coombes Luc Defebvre Christine Delmaire Kathy Dujardin Fabrizio Esposito 范国光 Federica Di Nardo 冯怡萱 Brett W.Fling Saurabh Garg Moran Gilat Martin Gorges Shu-Leong Ho Fay B.Horak 胡晓 胡晓飞 黄飚 黄沛钰 贾泽娟 Christina Jones Jan Kassubek Lenka Krajcovicova Ajay Kurani 李静 李晴 刘爱萍 刘波 刘虎 刘卫国 Renaud Lopes 娄毓婷 罗巍 Tara Madhyastha 毛妮妮 Grainne McAlonan Martin J.McKeown Shirley Pang Andrea Quattrone Irena Rektorova Alessia Sarica 商慧芳 James M.Shine Priyank Shukla Tomas Slavicek 宋潇鹏 Gioacchino Tedeschi Alessandro Tessitore David Vaillancourt 王健 王珏 Z.Jane Wang 魏鲁庆 邬霞 徐晓俊 闫磊 杨靓 杨万群 姚乃琳 张得龙 张久权 张敏鸣 张艳玲 周彩红 严超赣 左西年 Mark Hallett 吴涛 臧玉峰 | 2021 | Science Bulletin2021，66，21： | 3 |
| 13 | On Reverses of the L_p-Busemann-Petty Centroid Inequality and Its Applications显示文摘In this paper,the reverse forms of the L p-Busemann-Petty centroid inequality are shown. As the applications of the reverse forms,we obtain the reverse forms of the L p-centroid-affine inequality and an upper bound of the isotropic constant for convex bodies. | WANG Weidong1,2 1. Department of Mathematics, China Three Gorges University, Yichang 443002, Hubei, China 2. Department of Mathematics, Hubei University for Nationalities, Enshi 445000, Hubei, China | 2010 | Wuhan University Journal of Natural Sciences2010，15，4： | 3 |
| 14 | Research on forecasting model of sandstone deformation rate during sine wave loading segment under the lag effect显示文摘To reduce data variance caused by individual differences of different samples,a new experimental method is proposed by loading and unloading the axial forces with different frequencies and different waves of a certain load amplitude to the same rock sample without damaging it.Lag time segments are defined and fractionized into segments I and Ⅱ.Criterions for seg-mentation,definitions of relevant parameters and empirical analysis are also offered afterwards.In the course of sinusoidal loading,the serious peak value dislocation of the displacement variation rate and the loading rate is defined as peak dislocation.Meanwhile,the definition of the apparent tangent modulus is put forward and the linear relation between it and the vertical force in the frequency of 0.1,0.2,0.5 Hz sinusoidal loading segment is confirmed to be ever-present on the basis of the test data.Then the calculating formula of the deformation rate in non-lag time is deduced.It is thus suggested that the deformation rate should be codetermined by the loading rate df/dt and instant load f(t),which well explains the peak dislocation of the time-variable curve peak value of dl/dt and deformation rate of df/dt.Finally the lag time derivation model is established and by comparing the calculated values with the measured ones,it is demonstrated that the above formula offers a better simulation of the sandstone deformation rate in the sinusoidal loading segment,with the load amplitude being 96 kN and the frequency ranging from 0.1 Hz to 0.5 Hz. | LIU Jie1,2,LI JianLin1,2,QU JianJun1,ZHOU JiFang3,ZHANG ChaoFeng3 & LI JianWu1 1Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,Yichang 443002,China 2College of Civil and Hydropower Engineering,China Three Gorges University,Yichang 443002,China 3Er’tan Hydropower Development Company,Ltd.Chengdu 61000,China | 2010 | Science China(Technological Sciences)2010，53，5： | 2 |
| 15 | The Changes of Fiscal Agriculture-Supporting Expenditure and Farmers' Income Based on Grey Correlation Theory显示文摘According to the relevant data of China Statistical Yearbook and Chinese Rural Statistical Yearbook in the year of 2009,the changes of grey correlation degree of farmers' net income,various items of incomes,national gross agriculture-supporting expenditure and various items of expenditures,farmers' net income and various items of fiscal agriculture-supporting expenditure in the Eighth Five-Year Plan,Ninth Five-Year Plan and Tenth Five-Year Plan by using grey correlation degree and the by choosing seven indicators covering income from wage and salary,income from household business,transfer income and property income,agricultural production-supporting expenditure,agricultural basic construction expenditure,expenses of three items of agricultural technology and the fee of rural relief.The results show that the grey correlation degree of each time period and household net income shows the downward trend;from overall perspective,the grey correlation degree of national gross agriculture-supporting expenditure,agricultural basic construction expenditure and agricultural production-supporting expenditure shows the descending trend;the grey correlation degree of fiscal agricultural supporting expenditure and the expenditure of three items of agricultural technology and fee of rural relief show the upward trend;the influence of agricultural production-supporting expenditure on farmers' income shows downward trend;the influence of agricultural basic construction on farmers' income shows upward trend;the fee of rural relief play an active role in the promoting the farmers' income increase;the role played by fee of rural relief in promoting farmers' income increase should be further increased;the increase of farmers' income shows great reliance on agricultural science and technology.In the end,the relevant suggestions on establishing stable increase mechanism of fiscal agricultural support and insisting on the dynamic adjustment of the structure of fiscal agricultural supporting capital are put forward. | LIU Yao-sen School of Economics and Management,Chongqing Three Gorges University,Chongqing 404100,China | 2011 | Asian Agricultural Research2011，3，3： | 2 |
| 16 | Application of Grey Associative Analysis to the Assessment of Regional Water Security显示文摘The assessment of water security is an important content in the security management of water resources due to the fact that the state of water security directly affects both the sustainable development of regional economy and the improvement on the living quality of mankind. Grey associative analysis is introduced and applied to assessment of water security on the basis of grey characteristics of the assessment index system of water security. As a case study shows, grey associative analysis is used for evaluating water security of some provinces in China, and the satisfactory assessment results are obtained. The sequence of provinces in China with regard to water security from good to poor is obtained and, moreover, the water security level of each region is also confirmed. The results obtained accord with the actual state of each region. They are of practical significance and can be used to guide the management of regional water security and a sustainable development of the economy therein. At the same time, the results demonstrate that grey associative analysis provides a new method for assessing water | Zhang Yanmin~1, Dong Qianjin~1, Wang Xianjia~1, Wang Jianping~2, Fu Chun~3(1.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China 2.College of Economics and Management, China Three Gorges University, Yichang 443002, China 3. Center of China Central Economy Development, Nanchang University, Nanchang 330047, China) | 2007 | 工程科学(英文版)2007，5，2： | 2 |
| 17 | INTRAVASCULAR ULTRASOUND IMAGING OF ANGIOGRAPHICALLY 'SILENT' LEFT MAIN CORONARY ARTERY ATHEROSCLEROSIS显示文摘Patients with left main coronary artery (LMCA) atherosclerosis have a poor prognosis compared with lesions in the other coronaries. Because of the methodological problems. LMCA atherosclerotic lesions are not frequently detected by coronary angiography. The purpose of the study was to reveal the existence of LMCA disease in patients with normal coronary arteries by using intravascular ultrasound imaging. Ninety-seven patients with angiographically normal coronary arteries were examined with a 3.5 F or 4.8 F. 20 MHz intravascular ultrasound catheter. The vessel, lumen and plaque areas were determined and percent area and diameter stenosis were calculated. Plaque formation with or without calcific deposits identified by ultrasound accoustic shadowing were regarded as signs of atherosclerosis. | Michael Hande Gunter Gorge Mahmoud Ashry | 1995 | Chinese Medical Journal1995，，3： | 2 |
| 18 | AN APPLICATION OF LABVIEW ON AUTOMATIC DATA ACQUISITION AND CONTROL IN GEOTECHNICAL LABORATORY TESTS显示文摘The characteristics of USB data acquisition system NI cDAQ and its control software LabVIEW are briefed.The methods for controlling GDS pressure and volume controller by LabVIEW through serial port communication are presented.A practical data sharing method among geotechnical testing systems is illustrated.As an application case on a modified conventional soil triaxial testing system, the automatic triaxial testing system is designed by LabVIEW.Based on the control panel, the cell pressure and back pressure can be controlled independently and the testing data can be recorded automatically. | ZHANG Hua WU Zheng-guang ZHANG Wei-wei(443002 China Three Gorges University, Key laboratory of Geological Hazards on Three Gorges Reservoir Area, Min-istry of Education, Yichang, Hubei, China) | 2009 | 微计算机信息2009，25，16： | 2 |
| 19 | Elimination of point straking on silver-stained two-dimensional gels by addition of iodoacetamide to the equilibration buffer显示文摘 | Gorg A Postel W Weser J | 1987 | Electrophoresis1987，8，： | 2 |
| 20 | Circulating tumor cells as therapy-related biomarkers in cancer patients显示文摘 | Tobias M. Gorges Klaus Pantel | 2013 | Cancer Immunology, Immunotherapy2013，，5： | 2 |
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