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Journal of Energy Chemistry 2024年第7期94卷 517-526页

作者： Zhen Wu Wenfeng He Jiahui Yang Yunuo Gu Ruiqi Yang Yiran Sun Jiajia Yuan Xin Wang Junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094JiangsuChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina FEB res inst Far East BatteryWuxi 214200JiangsuChina

Nucleation of lithium sulfide(Li_(2)S)induced by electrocatalysts plays a crucial role in mitigating the shut-tle ***,short-chain polysulfides on electrocatalysts surfaces tend to re-dissolve into elec-trolytes,delaying Li_(2)S supersaturation and its *** this study,we draw inspiration from the ribosome-driven protein synthesis process in cells to prepare ultrasmall nitrogen-doped MoS_(2) nanocrys-tals anchored on porous nitrogen-doped carbon networks(N-MoS_(2)-NC)***,the ex-situ SEM demonstrates that ribosome-inspired N-MoS_(2)-NC electrocatalysts induce early nucleation and rapid growth of three-dimensional Li_(2)s during *** calculations reveal that the Li-s bond length in N-MoS_(2)-Li_(2)S(100)is shorter,and the corresponding interfacial formation energy is lower than in MoS_(2)-Li_(2)S(100).This accelerated conversion of lithium polysulfides to Li_(2)S can enhance the utilization of active substances and inhibit the shuttle *** study highlights the potential of ribosome-inspired N-MoS_(2)-NC in improving the electrochemical stability of Li-S batteries,providing valuable insights for future electrocatalyst design.

关键词： Lithium-sulfur batteries Electrocatalysts Nanocrystals Ribosome-inspired Nucleation and growth

research on Water-Taking Characteristics of Huanghua Power Plant Reach

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China Ocean Engineering 1998年第1期13卷 99-112页

作者： Tong, ZS Ying, XY Qian, BF nanjing hydraul res inst Dept Hydraul Engn Nanjing 210029 Peoples R China

In this paper the water-taking characteristics of the first,the second and the third stage of theHuanghua Power Plant are studied by numerical model and physical *** results show that the pres-ent inlet channel only satisfies the supply need of the first stage of the power *** the riverbed of the in-let reach is properly dredged,the need of water supply for the third stage of the power plant could be met.

关键词： physical model numerical simulation cooling water tidal river

Structural Types of Sea Embankment and Their Stability Analysis

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China Ocean Engineering 1998年第3期13卷 333-352页

作者： Mao, CX Duan, XB Mao, PY nanjing hydraul res inst Dept Hydraul Engn Nanjing 210029 Peoples R China Natl Hydrol res inst River & Harbor Dept Nanjing 210024 Peoples R China

In this paper based on investigation on the structural types of sea embankments in the southeast coastal area of China, as well as the related tidal stages, waves and strength of marine soils, the finite element method (FEM) calculations for seepage flow stability, including the overall stability against sliding and local stability of sloping surface under the action of tidal stage and waves are carried out. A comparison of the computational results of FEM for single circular slip, composite circular slip and geogrid reinforcement against sliding shows that for calculation of stability against sliding of marine soft soil foundation it is even more reasonable to use the composite circular slip. The stability of sloping type sea embankment against sliding is slightly better than that of the vertical face type; for the combination of three defences (wave, scour and seepage defences) the sea embankment structural type of a composite cross section with a platform should be a good one, but it still should be suitable to local conditions. For the local stability of riprap slope blocks and wall face loose masonry blocks, according to the analyses of wave-induced seepage flow fields, calculating formulas are given and they are verified by model test on block stability of breakwaters.

关键词： sea embankment structural type tidal stage variation wave stroke seepage flow stability analysis

Effect of Sacrificial Anode Protection for Steel Pipe Piles at Dandong Port

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China Ocean Engineering 1998年第1期13卷 113-120页

作者： Zhu, XC Ge, Y Ge, RG nanjing hydraul res inst Dept Mat & Struct Nanjing 210024 Peoples R China

The sacrificial anode protection system for the steel pipe piles of the 3rd berth of Dandong; wharf at Dandong port has operated for eight years. In this paper, the program design and the protection effect of the sacrificial anode protection system are presented. The results of various inspections show that the piles are protected very satisfactorily.

关键词： steel pipe pile corrosion sacrificial anode cathodic protection protection potential protection percentage

A Numerical Model for Typhoon Surges

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China Ocean Engineering 1998年第2期13卷 191-202页

作者： Pan, JN Wang, HC Yao, GQ nanjing hydraul res inst River Harbour Dept Nanjing 210024 Peoples R China

In this paper a simple and efficient implicit finite-difference scheme is used for depth-averaged two-dimensional storm surge model. This finite-difference scheme is simpler and more efficient than the widely-used ADI scheme. Accuracy analysis and stability analysis indicate that the scheme has two-order accuracy and is unconditionally stable when the grid size is constant. The present analysis results show that the scheme is of higher numerical accuracy than that introduced by Maa (1990). After tested by ideal models, a calculation example of a real typhoon surge is carried out, the results of the numerical simulation coincide well with the observed data and the accuracy is sufficient for engineering applications.

关键词： storm surge numerical simulation finite-difference scheme accuracy stability

Wave-Current Propagation over a Frictional Topography

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China Ocean Engineering 1998年第4期13卷 417-426页

作者： Zuo, QH Ding, BC nanjing hydraul res inst River & Harbour Dept Nanjing 210024 Peoples R China

In this paper the parabolic approximation model based on mild-slope equation is used to study wave propagation over a slowly varying and frictional topography under wave-current interaction. A governing equation considering the friction effects is derived by the authors for the first time. A simplified form for the rate of wave energy dissipation is presented on the basis of the wave-current action conservation equation and the bottom friction model given by Yoo and O'connor (1987). Examples reveal that the present computational method can be used for the calculation of wave elements for actual engineering projects with large water areas.

关键词： wave-current frictional topography refraction-diffraction

Study on Coastal Protection Engineering in the Area of Abandoned Yellow River Mouth

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China Ocean Engineering 1998年第2期13卷 223-234页

作者： Zhang, YF Yu, GH Sheng, ZC Xu, M nanjing hydraul res inst River & Harbour Dept Nanjing 210024 Peoples R China

This paper reviews the history of coast evolution and coastal protection in the area of the abandoned Yellow River mouth in Jiangsu Province, analyzes the erosion characteristics and dynamic environment, evaluates the efficiency of coastal protection engineering works and designs the dimensions of the main seadike and offshore submerged dam. A gerneral scheme of shore protection for this area is proposed.

关键词： coastal protection coastal erosion wave calculation main seadike groin offshore submerged dam

STABILITY ANALYSIS OF RIVERBANK SUBJECT TO SEEPAGE

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International Journal of Sediment research 2007年第4期22卷 282-291页

作者： Yan LU1, Yongjun LU2, and Xingnong ZHANG3 1 Postdoctoral Fellow, nanjing hydraulic research institute, State Key Laboratory of Hydrology Water resources and hydraulic Engineering Science, nanjing, China 210029. 2 Prof., nanjing hydraulic research institute, nanjing, China 210029 3 Prof., nanjing hydraulic research institute, nanjing, China 210029. nanjing hydraul res inst Nanjing 210029 Peoples R China

The stability of riverbanks subject to seepage is studied experimentally and theoretically in this paper. By including seepage in a 3-dimensional theoretical analysis, the study first shows how the critical slope or angle of repose of a cohesionless material is related to the ratio of the hydraulic gradient of seepage to its critical value under the fluidization condition. The critical stable slope is shown to be related to not only the hydraulic gradient but also the seepage direction. Measured laboratory data reasonably fit well with the theoretical relationship for the case of injection and suction. The data reveal that the slope is reduced with injection and increased with suction, respectively. Additionally, the study identifies the seepage direction which results in a minimum critical stable slope for a certain hydraulic gradient of seepage.

关键词： Seepage Riverbank Stability Critical stable slopes Angle of repose Erosion

Numerical Modeling on Suspended Sediment Transportation in the Hangzhou Bay

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China Ocean Engineering 1998年第1期13卷 87-98页

作者： Zhang, JS Lu, PD Xu, M nanjing hydraul res inst Dept River & Harbor Nanjing 210024 Peoples R China nanjing Normal Univ Dept Geog Nanjing 210024 Peoples R China

In this paper the characteristics of tidal flow and seasonal variation of seidment content in the Hangzhou Bay and their affecting factors are studied. Field investigations and data analysis indicate that the sediment movement is mainly influenced by the Yangtze estuary and the sediment of the Yangtze estuary is induced by wind wave and tidal flow. Owing to the variation of dynamic conditions, the instantaneous sediment content is controlled by tidal flow, wind wave, depth of water and tidal range synthetically. A sediment content relationship formula is established with related factors. A non-equilibrium 2-dimensional numerical model of suspended sediment transportation is set up, and the finite element method is applied. The computation results of the model is in accordance with field data.

关键词： sediment sediment content sediment-carrying capacity finite element numerical model

Analytic Solution of Elasto-Plastic Stress in Infinite Slope under Uniform Load

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China Ocean Engineering 1999年第2期14卷 197-208页

作者： Wang, NX Gu, L nanjing hydraul res inst Geotech Engn Dept Nanjing 210024 Peoples R China Lianyungang Port Author Plan & Stat Dept Lianyungang 222046 Peoples R China

According to the Mohr-Coulomb yield criterion, the stress field of the infinite slope is derived under a vertical uniform load q on the top of the slope. It is indicated that elastic and elasto-plastic states would occur in the slope. When q is smaller than the critical load, q(p), the slope is in the elastic state. If q equals q(p), the slope is in the critical state, and the plastic deformation would occur along the critical angle. With the increase of q, the plastic zone would extend, and the slope is in the elasto-plastic State. If q equals limit load, the slope is in the limit equilibrium state. The slope may be divided into three zones. Some charts of the critical angle, the critical and limit load coefficients are presented in this paper.

关键词： elasto-plastic stress critical load limit load infinite slope uniform load