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| 1 | FLOOD DISCHARGE AND ENERGY DISSIPATION BY JETS FROM OUTLETS IN HIGH ARCH DAM显示文摘In this thesis, the scale effect by an aerated water jet diffusing in the water upon the hydrodynamic pressure, the local riverbed scour by multiple layered jets and by those colliding in the vertical and the transverse directions, and the stability of the apron slab both in the inverted arch cushion pool and the flat bottom one by the large discharge and the high water head with 300m level are detailedly researched by means of model test and numerical simulation. A mathematic model simulating the destabilization of the flat bottomed slab is established to open out the mechanism of its stability. Both experimental researches both on the hydrodynamic pressure acted inside joints between the bedrock and the apron slab, and on forces at arch abutments in inverted arch cushion pool are carried out by using an advanced measurement and the imitation means to acquire the mechanism of the inverted arch pool to keep stability and its stability condition. | Ph.D.Candidate:Sun JianXi’an University of Technolgy, Xi’an 710048, ChinaSupervisor:Yu Changzhao (Tsinghua University, Beijing 100084, China)Li Yuzhu (Tsinghua University, Beijing 100084, China)Chen Changzhi (Tsinghua University, Beijing 100084, China)Members of Dissertation Defense Committee:Gao Jizhang (China Institute of Water Resources and Hydropower Research), ChairmanLi Guifen (China Institute of Water Resources and Hydropower Research)Cui Guangtao (Tianjing University)Wang Xingkui (Tsinghua University)Yu Changzhao (Tsinghua University)Li Yuzhu (Tsinghua University)Chen Changzhi (Tsinghua University) | 2003 | Journal of Hydrodynamics2003，15，1： | 39 |
| 2 | Dynamic Response Behaviors of Upright Breakwaters Under Breaking Wave Impact显示文摘- The dynamic response behaviors of upright breakwaters under broken wave impact are analysed based on the mass-damper-spring dynamic system model. The effects of the mass, damping, stiffness, natural period, and impulse duration (or oscillation period) on the translation, rotation, sliding force, overturning moment, and corresponding dynamic amplifying factors are studied. It is concluded that the ampli-ying factors only depend on the ratio of the system natural period to impulse duration (or oscillation period) under a certain damping ratio. Moreover, the equivalent static approach to breakwater design is also discussed. | Wang Yuanzhan , Chi Lihua and Pan Houzhi Associate Professor, Department of Water Resources and Harbour Engineering, Tianjing University, Tianjin 300072Lecturer, Computer Center, Tianjing University, Tianjin 300072 Graduate student, Department of Water Resources and Harbour Engineering, Tianjing University, Tianjin 300072 | 1996 | China Ocean Engineering1996，11，3： | 12 |
| 3 | Recharge sources and chemical composition types of groundwater and lake in the Badain Jaran Desert, northwestern China显示文摘在 Badain Jaran 沙漠基于湖水和浅地下水的离子化学药品作文的分析,这份报纸在荒芜的区域讨论了离子化学药品作文,湖水的空间变化,和湖水和地下水的可能的供应来源的特征。结果证明 pH,咸度, TDS 和湖水的电的电导率比地下水的那些大。水样品的离子内容被 Na+ 和 Cl 统治。大多数更高的咸度湖是 Na (K)-Cl-(SO4) 类型,并且低咸度湖的一些属于 Na-(Mg )-(Ca)-Cl-(SO4)-(HCO3) 类型。大多数地下水是 Na-(Ca )-(Mg)-Cl-(SO4)-(HCO3) 类型,把湖,和仅仅在场的一些归因于 subsaline Na-Cl-SO4 类型,流动在盐的湖下面。在东南的湖的 pH,咸度, TDS 和电的电导率是相对低的,并且有稍微碱的湖。在北湖的 pH,咸度, TDS 和电的电导率比东南的湖的那些大得多,并且北湖是中等碱、盐的。在 Badain Jaran 沙漠的东南的部分,到北方表演的来自南方的湖水的离子化学药品特征 subsaline salinehypersaline 的一个变化趋势。离子在的化学作文的变化趋势最近 9 年显示大多数离子内容在 Boritaolegai, Badain, Nuoertu 和 Huhejilin 湖有一点儿减小,它清楚地声明新鲜的水供应的数量在 9 年的时期正在增加。湖水的离子化学药品作文表明湖水的流动方向从东南到在 Badain Jaran 沙漠的西北。离子化学药品作文,沙层水水平高度的潮湿内容和湖水和地下水的层次簇分析证明湖水被降水的本地降雨和渗入主要在 Yabulai 山和 Heishantou 山供应,并且从 Qilian 山的供应是几乎不可能的。 | SHAO Tianje ZHAO Jingbo ZHOU Qi DONG Zhibao MA Yandong | 2012 | Journal of Geographical Sciences2012，22，3： | 7 |
| 4 | Model design and structure research for integration system of energy, information and transportation networks based on ANP-fuzzy comprehensive evaluation显示文摘For lack of deep research on model, system structure and top-level design, the integrated system concept of energy, information and transportation networks fails to provide effective guidance for transferring the theory to practice. In this paper, with dispatching of energy flow and information flow as a focus, clean energy of wind power and solar power as carrier, battery charging & swapping station as medium and all kinds of transportation flows as entity, a five-in-one threenetwork integrated system model is built by full use of technologies of Internet of Vehicles(IOV) and Internet of things(IOT) to promote the innovative concept of three-network integration into practice, and provide a reference for future researches. | Tianjing Wu Shaohua Liu Ming Ni Yong Zhao Pei Shen Syed Furqan Rafique | 2018 | Global Energy Interconnection2018，1，2： | 7 |
| 5 | Fouling corrosion in aluminum heat exchangers显示文摘Fouling deposits on aluminum heat exchanger reduce the heat transfer efficiency and cause corrosion to the apparatus.This study focuses on the corrosive behavior of aluminum coupons covered with a layer of artificial fouling in a humid atmosphere by their weight loss,Tafel plots,electrochemical impedance spectroscopy(EIS),and scanning electron microscope(SEM)observations.The results reveal that chloride is one of the major elements found in the fouling which damages the passive film and initiates corrosion.The galvanic corrosion between the metal and the adjacent carbon particles accelerates the corrosive process.Furthermore,the black carbon favors the moisture uptake,and gives the dissolved oxygen greater chance to migrate through the fouling layer and form a continuous diffusive path.The corrosion rate decreasing over time is conformed to electrochemistry measurements and can be verified by Faraday’s law.The EIS results indicate that the mechanism of corrosion can be interpreted by the pitting corrosion evolution mechanism,and that pitting was observed on the coupons by SEM after corrosive exposure. | Su Jingxin Ma Minyu Wang Tianjing Guo Xiaomei Hou Liguo Wang Zhiping | 2015 | Chinese Journal of Aeronautics2015，28，3： | 5 |
| 6 | Numerical Simulation and Experimental Research on Microstructural Evolution During Compact Hot Extrusion of Heavy Caliber Thick-Wall Pipe显示文摘Compact hot extrusion(CHE) process of heavy caliber thick-wall pipe is a new material-saving production process. In order to reveal the optimum hot extrusion parameters in CHE process, the e ects of the extrusion parameters on the microstructural evolution are investigated systematically. The metadynamic recrystallization(MDRX) kinetic models and grain size models of as-cast P91 steel are established for the first time according to the hot compression tests performed on the Gleeble-3500 thermal-simulation machine. Then a thermal-mechanical and micro-macro coupled hot extrusion finite element(FE) model is established and further developed in DEFORM software. The results indicated that the grain size of the extruded pipe increases with the increasing of initial temperature and extrusion speed, decreases when extrusion ratio increases. Moreover, the grain size is more sensitive to the initial temperature and the extrusion ratio. The optimum hot extrusion parameters are including that, the initial extrusion temperature of 1250 °C, the extrusion ratio of 9 and the extrusion speed of 50 mm/s. Furthermore, in order to verify the simulation precisions, hot extrusion experiment verification on the heavy caliber thick-wall pipe is carried out on the 500 MN vertical hot extrusion equipment. The load–displacement curve of the extrusion process and the grain sizes of the middle part extruded pipe are in good accuracy with the simulation results, which confirms that the hot extrusion FE models of as-cast P91 steel could estimate the hot extrusion behaviors. The proposed hot extrusion FE model can be used to guide the industrial production research of CHE process. | Lu Jia Yongtang Li Tianjing Hui Yang Zhang | 2019 | Chinese Journal of Mechanical Engineering2019，32，1： | 3 |
| 7 | NUMERICAL STUDY FOR EVOLUTION OF COHERENT VORTEX IN UNIDIRECTIONAL OSCILLATORY BOUNDARY LAYER OVER SAND RIPPLES显示文摘Ripples are widely formed in river channels and coastal regions, the bed-forms and vortex dynamics accompanied with them are quite important because they are responsible for frictions and sediment transports. The coherent vortex structure play a key role in the process, so how to model them is needed for understanding the formation process of sand ripples. In this paper, 2D Large-Eddy-Simulation (LES) was used to predict the flow structure and the dynamics of coherent vortex. The numerical results show a complete process of formation, evolvement and disappearance for the cases of unidire ctional and oscillatory flows over symmetic and asymmetric | Bai Yu-chuan Institute for Sedimentation on River and Coast Engineering,Tianjin University, Tianjing 300072, China Ng Chiu-On Department of Mechanical Engineering, The University of Hongkong, Hongkong, China | 2002 | Journal of Hydrodynamics2002，14，4： | 2 |
| 8 | Qualitative Simulation of Non-linear SISO System | GUAN Wei\ LIU Bao Institute of Systems Engineering,Tianjin University,Tianjing 300072 | 1998 | Systems Science and Systems Engineering1998，8，1： | 2 |
| 9 | NEW HETEROCYCLIC SYSTEM SYNTHESIS H THE REACTION OF 2,3-DIHYDRO-1,5-BENZOTHIAZEPINES WITH DICHLOROCARBENE显示文摘The reaction of two series of 2,3-dihydro-1,5-henzothiazepines Ⅰ with dichloro-carbene,gave azirino[2,1-d][1,5]benzothiazepines Ⅷ,azirino[2,1-e][1,6]benzothiazocines Ⅸ,pyrrolo[2,1-b][1,3]benzothiazoles Ⅹ,substituted-cyclopropanes Ⅺ and 2H-1,4-benzothiazin-2-onesⅫ.The structures of these products were confirmed by the analytical and spectral data.CompoundⅧ and Ⅸ are two new ring systems. | Ruo Xi LAN Sheng JIN Department of Chemistry,Peking University,Beijing 100871Zheng Ming LI Elemento-Organic Chemistry Laboratory,Nankai University,Tianjing 300071 | 1992 | Chinese Chemical Letters1992，3，1： | 2 |
| 10 | Recurrence of pulmonary sclerosing hemangioma显示文摘 | Wei S TianJ Song X et af | 2008 | Thorac Cardiovasc Surg2008，56，2： | 1 |
| 11 | Methaneproductioninrelationwithtemperature,substrateandsoildepthinZoigewetlandsonTibetanPlateau显示文摘 | TianJ ChenH WangY etal | 2011 | ActaEcologicaSinica2011，31，： | 1 |
| 12 | Three novel ID lanthanide-carboxylate polymeric complexes: syntheses,crystal structures and magnetic analyses显示文摘 | TIANJ LI B ZHANG X | 2013 | Dalton Trans2013，42，： | 1 |
| 13 | The effects of hydroxyethyl starch on lung capillary permeability in endotoxic rats and possible mechanisms显示文摘 | TianJ LinX GuanR | 2004 | Anesth Analg2004，98，： | 1 |
| 14 | HLAclassⅠ(ABC) upregulationonperipheralbloodCD3+/CD8+Tlymphocytesurfaceisapotentialpredictorofacute rejection in renal transplantation 显示文摘 | TianJ ShiWF ZhangLW etal | 2009 | Transplantation2009，88，12： | 1 |
| 15 | Mode Analysis of Surface Plasmon Metal-Dielectric-Metal Nanowire Array Waveguide at Sub- Wavelength Scale显示文摘 | TianJ P Liang XJ Zhang CJ | 2013 | Eur Phys] D2013，67，： | 1 |
| 16 | Some Results for the Compound Poisson Process That Is Perturbed by Diffusion显示文摘Abstract In the present paper surplus process perturbed by diffusion are considered.The distributions ofthe surplus immediately before and at ruin corresponding to the probabilities of ruin caused by oscillation andruin caused by a claim are studied.Some joint distribution densities are obtained.Techniques from martingaletheory and renewal theory are used. | Chun-sheng ZHANG, Lian-zeng ZHANG, Rong WUDepartment of Mathematics, Nankai University, Tianjing 300071, China | 2002 | Acta Mathematicae Applicatae Sinica2002，18，1： | 1 |
| 17 | 显示文摘 | TIANJing(田婧) DONGLi-Na(董丽娜) ZHAOKai(赵凯) etal | | WujiHuaxueXuebao0，，： | 1 |
| 18 | Summary on Least Square Fitting Principle of the Savitzky-Golay Smoothing Filter显示文摘 | Cai Tianjing Tang Han | 2011 | Digital Communication2011，1，17： | 1 |
| 19 | Binding of SrctoNa+, K+- ATPase forms a functional signaling complex 显示文摘 | TianJ CaiT YuanZ | 2006 | Mol Biol Ce112006，17，1： | 1 |
| 20 | Prenatal and perinatalrisk factors for autism in China显示文摘 | Zhang X Lv CC TianJ | 2010 | J Autism DevDisord2010，40，11： | 1 |
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