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| 1 | Disaster prevention design criteria for the estuarine cities:New Orleans and Shanghai The lesson from Hurricane Katrina显示文摘The accurate prediction of the typhoon (hurricane) induced extreme sea environments is very important for the coastal structure design in areas influenced by typhoon (hurricane). In 2005 Hurricane Katrina brought a severe catastrophe in New Orleans by combined effects of hurricane induced extreme sea environments and upper flood of the Mississippi River. Like the New Orleans City, Shanghai is located at the estuarine area of the Changjiang River and the combined effect of typhoon induced extreme sea environments, flood peak runoff from the Changjiang River coupled with the spring tide is the dominate factor for disaster prevention design criteria. The Poisson-nested logistic trivariate compound extreme value distribution (PNLTCEVD) is a new type of joint probability model which is proposed by compounding a discrete distribution (typhoon occurring frequency) into a continuous multivariate joint distribution (typhoon induced extreme events). The new model gives more reasonable predicted results for New Orleans and Shanghai disaster prevention design criteria. | LIU Defu SHI Hongda PANG Liang | 2006 | Acta Oceanologica Sinica2006，25，4： | 16 |
| 2 | Experimental Study on Interaction Between Degrees of Freedom in a Wave Buoy显示文摘Increasing degrees of freedom(DOFs)is a useful way to raise the power capture efficiency of oscillating wave energy converters.Thus,this study proposes a buoy with three DOFs,which are surge,heave,and pitch.The hydrodynamic performance and power capture efficiency of the buoy is physically modeled.Amplitudes of unidirectional and coupled motions are compared to analyze the interaction effect between freedoms under conditions with and without power take-off damping.The capture width ratio and corresponding growth rates are also calculated.Results show that the buoy makes a periodic sinusoidal(or approximate)movement in every DOF.Coupling effect can cause an increase in the amplitude in one DOF and a decrease in the amplitudes of the others.This phenomenon shows that the kinematic energy of the buoy redistributes to all DOFs compared with the unidirectional conditions.Adding DOFs can improve the power absorption of the buoy in most cases,but the number of DOFs is not the more the better. | HUANG Shuting SHI Hongda CAO Feifei TAN Junzhe CHENG Haixun LI Demin LIU Shangze GONG Haoxiang TAO Ji | 2019 | Journal of Ocean University of China2019，18，6： | 5 |
| 3 | Lipid-dependent conformational dynamics underlie the functional versatility of T-cell receptor显示文摘T 房间 receptor-CD3 建筑群(TCR ) 是能基于 CD3 细胞质的领域的各种各样的生物化学的变化开始抗原特定的有免疫力的回答的一台万用的发信号机器,但是内在的结构的基础留下逃犯。这里,我们开发了生物物理的途径学习 CD3 细胞质的领域的 conformational 动力学(CD3 CD ) 。在单个分子的水平,我们发现那 CD3 CD 能与三个功能的主题的不同坦诚有多重 conformational 状态,即, ITAM, BRS 和 PRS。因为,这些符合构造被产生 CD3 CD 有异构的类脂化合物绑定性质因此有异构的动力学。实时房间的成像实验证明不同抗原刺激能稳定 CD3 在不同符合构造的 CD 。类脂化合物依赖者 conformational 动力学因此为 TCR 的万用的发信号性质提供结构的基础。 | Xingdong Guo Chengsong Yan Hua Li Wenmao Huan Xiaoshan Shi Min Huang Yingfang Wang Weiling Pan Mingjun Cai Lunyi Li Wei Wu Yibing Bai Chi Zhang Zhijun Liu Xinyan Wang Xiaohui F Zhang Chun Tang Hongda Wang Wanli Liu Bo Ouyang Catherine C Wong Yi Cao Chenqi Xu | 2017 | Cell Research2017，27，4： | 5 |
| 4 | Study on the Breakwater Caisson as Oscillating Water Column Facility显示文摘The Oscillating Water Column(OWC) wave energy convertor with the advantage of its simple geometrical construction and excellent stability is widely employed.Recently,perforated breakwaters have been often used as they can effectively reduce the wave reflection from and wave forces acting on the structures.Considering the similarity between the compartment of perforated caisson and the air chamber of OWC wave energy convertor,a new perforated caisson of breakwater is designed in this paper.The ordinary caisson is modified by installing facilities similar to the air chamber of OWC converter,but here they are utilized to dissipate the wave energy inside the caisson.Such an arrangement improves the stability of the caisson and reduces the construction cost by using the compartment of perforated caisson like using an air chamber.This innovation has both academic significance and important engineering value.For a new type of caisson,reliability analysis of the structure is necessary.Linear potential flow theory is applied to calculate the horizontal wave force acting on the caisson.The calculated results are compared with experimental data,showing the feasibility of the method.The Importance Sampling Procedure(ISP) is used to analyse the reliability of this caisson breakwater. | HUANG Yan SHI Hongda LIU Defu LIU Zhen | 2010 | Journal of Ocean University of China2010，9，3： | 4 |
| 5 | Sex disparity of lung cancer risk in non-smokers:a multicenter population-based prospective study based on China National Lung Cancer Screening Program显示文摘Background: Non-smokers account for a large proportion of lung cancer patients, especially in Asia, but the attention paid to them is limited compared with smokers. In non-smokers, males display a risk for lung cancer incidence distinct from the females-even after excluding the influence of smoking;but the knowledge regarding the factors causing the difference is sparse. Based on a large multicenter prospective cancer screening cohort in China, we aimed to elucidate the interpretable sex differences caused by known factors and provide clues for primary and secondary prevention.Methods: Risk factors including demographic characteristics, lifestyle factors, family history of cancer, and baseline comorbidity were obtained from 796,283 Chinese non-smoking participants by the baseline risk assessment completed in 2013 to 2018. Cox regression analysis was performed to assess the sex difference in the risk of lung cancer, and the hazard ratios (HRs) that were adjusted for different known factors were calculated and compared to determine the proportion of excess risk and to explain the existing risk factors.Results: With a median follow-up of 4.80 years, 3351 subjects who were diagnosed with lung cancer were selected in the analysis. The lung cancer risk of males was significantly higher than that of females;the HRs in all male non-smokers were 1.29 (95% confidence interval [CI]: 1.20-1.38) after adjusting for the age and 1.38 (95% CI: 1.28-1.50) after adjusting for all factors, which suggested that known factors could not explain the sex difference in the risk of lung cancer in non-smokers. Known factors were 7% (|1.29-1.38|/1.29) more harmful in women than in men. For adenocarcinoma, women showed excess risk higher than men, contrary to squamous cell carcinoma;after adjusting for all factors, 47% ([1.30-1.16]/[1.30-1]) and 4% ([7.02-6.75]/[7.02-1])) of the excess risk was explainable in adenocarcinoma and squamous cell carcinoma. The main causes of gender differences in lung cancer risk were lifestyle factors, baseline comorbidity, and family history.Conclusions: Significant gender differences in the risk of lung cancer were discovered in China non-smokers. Existing risk factors did not explain the excess lung cancer risk of all non-smoking men, and the internal causes for the excess risk still need to be explored;most known risk factors were more harmful to non-smoking women;further exploring the causes of the sex difference would help to improve the prevention and screening programs and protect the non-smoking males from lung cancers. | Zheng Wu Fengwei Tan Zhuoyu Yang Fei Wang Wei Cao Chao Qin Xuesi Dong Yadi Zheng Zilin Luo Liang Zhao Yiwen Yu Yongjie Xu Jiansong Ren Jufang Shi Hongda Chen Jiang Li Wei Tang Sipeng Shen Ning Wu Wanqing Chen Ni Li Jie He | 2022 | Chinese Medical Journal2022，，11： | 3 |
| 6 | Flexible supercapacitors显示文摘Flexible supercapacitors show a great potential for applications in wearable,miniaturized,portable,largescale transparent and flexible consumer electronics due to their significant,inherent advantages,such as being flexible,lightweight,low cost and environmentally friendly in comparison with the current energy storage devices.In this report,recent progress on flexible supercapacitors,flexible electrodes and electrolytes is reviewed.In addition,the future challenges and opportunities are discussed. | Shan Shi Chengjun Xu Cheng Yang Jia Li Hongda Du Baohua Li Feiyu Kang | 2013 | Particuology2013，11，4： | 2 |
| 7 | Study on Hydraulic System Efficiency of Heaving-Buoy Wave Energy Converter显示文摘The hydraulic system is the key component in the widely used wave energy converters(WEC).In this paper,we theoretically analyze and describe our investigation of the efficiency of the hydraulic system by simulation and model testing of the combined heaving-buoy WEC.We derive a new governing equation that includes nonlinear hydraulic resistance in the power take-off(PTO).We conducted a physical model experiment based on a 100-kW prototype and applied a hydraulic system with an energy accumulator.The model test results reveal an important parameter related to efficiency with respect to nonlinear hydraulic resistance.We also studied the relationship between the efficiency and the initial conditions.Finally,based on our numerical simulation results,we discuss the effect on efficiency of the gas content of the hydraulic fluid and ways to reduce its impact. | SHI Hongda ZHAO Chenyu LIU Zhen CAO Feifei | 2018 | Journal of Ocean University of China2018，17，5： | 2 |
| 8 | Optimization of Wind-Marine Hybrid Power System Configuration Based on Genetic Algorithm显示文摘Multi-energy power systems can use energy generated from various sources to improve power generation reliability.This paper presents a cost-power generation model of a wind-tide-wave energy hybrid power system for use on a remote island,where the configuration is optimized using a genetic algorithm.A mixed integer programming model is used and a novel object function,including cost and power generation,is proposed to solve the boundary problem caused by existence of two goals.Using this model,the final optimized result is found to have a good fit with local resources. | SHI Hongda LI Linna ZHAO Chenyu | 2017 | Journal of Ocean University of China2017，16，4： | 1 |
| 9 | Study on Deformation Law of Circular Foundation Under Combined Loading显示文摘The foundations of some ocean engineering structures are built to withstand not only the vertical gravity load V, but also the horizontal load H induced by sea waves and current. The horizontal load includes the concentrated force load, the moment load M, and the torque load T termed also as combined loading. It is of academic and engineering significance to study the deformation law of submarine seabed due to combined loading. On the basis of the three-dimensional elastic mechanics solution of circular foundation, numerical methods are used to analyze the deformation law of submarine soil under circular foundation with six degrees of freedom. The finite element analysis results give the elastic deformation law of soil in three dimensional spaces, modify the theoretical elasticity solution, and presents nonlinear soil deformation mechanism under the circular foundation with six degrees of freedom. | ZHANG Qiyi SHI Hongda | 2014 | Journal of Ocean University of China2014，13，1： | 1 |
| 10 | Experimental Study on the Hydrodynamic Performance of a Heaving Buoy Assembled on a Net Cage Platform显示文摘To take advantage of the abundance of both fishery and wave energy resources in offshore sea areas,a novel floating platform with a heaving buoy-based wave energy converter(WEC)assembled with a set of net cages is presented in this work.The floating WEC system provides a power supply,while the net cages are used for aquaculture.It is designed to have an independent and self-operation breeding function.An experimental study is carried out to investigate the hydrodynamic performance of the device in a wave tank considering the factors of net cages,draft depth,and power take-off,and results show that these variables have significant effects on wave energy capture.Incident waves with short periods cause intense interactions that allow the device to undergo large relative motion.The draft depth could be determined according to wave period rather than wave height.This study also explores the response amplitude operator of the device and determines its resonance scope.The experimental results could provide reliable information for future studies on phase differences and the design of two-body WECs. | SHI Hongda DONG Xiaochen FENG Liang HAN Zhi | 2019 | Journal of Ocean University of China2019，18，5： | 1 |
| 11 | Simulation of the Power Take-off System for a Heaving Buoy Wave Energy Converter显示文摘The heaving buoy wave energy device is popular for wave conditions with small wave heights and short periods. This paper presents the design of a wave energy converter composed of a gyro buoy, a hydraulic power take-off, and an electricity generation system. The energy accumulators are used to improve the output power with different control strategies. The quantity relations between each component are established using theoretical methods. The simulation model describes the energy conversion and calculates the operation time, energy capacity, and output power of the device under different initial pressures, release pressures, and electric resistances. As a result, the capacity is determined by the electronic load, and the maximum output power can be obtained when the accumulators are turned on and off at the same time. This study investigates the factors influencing the electric energy production and can be used to guide the optimization of this type of device. | CAO Feifei SHI Hongda LI Ming DONG Xiaochen LI Demin | 2020 | Journal of Ocean University of China2020，19，3： | 1 |
| 12 | Application of 2D Numerical Model to Unsteady Performance Evaluation of Vertical-Axis Tidal Current Turbine显示文摘Tidal current energy is renewable and sustainable, which is a promising alternative energy resource for the future electricity supply. The straight-bladed vertical-axis turbine is regarded as a useful tool to capture the tidal current energy especially under low-speed conditions. A 2D unsteady numerical model based on Ansys-Fluent 12.0 is established to conduct the numerical simulation, which is validated by the corresponding experimental data. For the unsteady calculations, the SST model, 2×10~5 and 0.01 s are selected as the proper turbulence model, mesh number, and time step, respectively. Detailed contours of the velocity distributions around the rotor blade foils have been provided for a flow field analysis. The tip speed ratio(TSR) determines the azimuth angle of the appearance of the torque peak, which occurs once for a blade in a single revolution. It is also found that simply increasing the incident flow velocity could not improve the turbine performance accordingly. The peaks of the averaged power and torque coefficients appear at TSRs of 2.1 and 1.8, respectively. Furthermore, several shapes of the duct augmentation are proposed to improve the turbine performance by contracting the flow path gradually from the open mouth of the duct to the rotor. The duct augmentation can significantly enhance the power and torque output. Furthermore, the elliptic shape enables the best performance of the turbine. The numerical results prove the capability of the present 2D model for the unsteady hydrodynamics and an operating performance analysis of the vertical tidal stream turbine. | LIU Zhen QU Hengliang SHI Hongda HU Gexing HYUN Beom-Soo | 2016 | Journal of Ocean University of China2016，15，6： | 1 |
| 13 | Mechanistic Insights into Membrane Protein Clustering Revealed by Visualizing EGFR Secretion显示文摘Most plasmalemmal proteins are organized into clusters to modulate various cellular functions.However,the machineries that regulate protein clustering remain largely unclear.Here,with EGFR as an example,we directly and in detail visualized the entire process of EGFR from synthesis to secretion onto the plasma membrane(PM)using a high-speed,high-resolution spinning-disk confocal microscope.First,colocalization imaging revealed that EGFR secretory vesicles underwent transport from the ER to the Golgi to the PM,eventually forming different distribution forms on the apical and basal membranes;that is,most EGFR formed larger clusters on the apical membrane than the basal membrane.A dynamic tracking image and further siRNA interference experiment confirmed that fusion of secretory vesicles with the plasma membrane led to EGFR clusters,and we showed that EGFR PM clustering may be intimately related to EGFR signaling and cell proliferation.Finally,we found that the size and origin of the secretory vesicles themselves may determine the difference in the distribution patterns of EGFR on the PM.More importantly,we showed that actin influenced the EGFR distribution by controlling the fusion of secretory vesicles with the PM.Collectively,a comprehensive understanding of the EGFR secretion process helps us to unravel the EGFR clustering process and elucidate the key factors determining the differences in the spatial distribution of EGFR PM,highlighting the correlation between EGFR secretion and its PM distribution pattern. | Haijiao Xu Jinrui Zhang Yijia Zhou Guanfang Zhao Mingjun Cai Jing Gao Lina Shao Yan Shi Hongru Li Hongbin Ji Yikai Zhao Hongda Wang | 2023 | Research2023，，1： | 0 |
| 14 | Highly sensitive vector magnetic fiber sensor based on hyperbolic metamaterials显示文摘Hyperbolic metamaterials(HMMs) are novel artificial materials that excite the surface plasmon resonance(SPR) because of their unique hyperbolic dispersion properties. Herein, to the best of our knowledge, we propose the first HMM-based fiber SPR(HMM-SPR) sensor for vector magnetic detection. By selecting the composite materials and structural parameters of the HMM dispersion management, HMM-SPR sensors can achieve a high refractive index sensitivity of 14.43 μm/RIU. Vector magnetic field detection was performed with the HMM-SPR sensor encapsulated with a magnetic fluid. Compared with other ferrofluidbased magnetic field fiber sensors, the proposed sensor shows pronounced advantages in intensity and direction sensitivity of 1.307 nm/Oe and 7.116 nm/°, respectively. The sensor design approach presented in this paper provides an excellent demonstration of HMM-SPR sensors in various applications. | Shiqi Hu Junhao Liang Jiayao Chen Hongda Cheng Qianyu Lin Weicheng Shi Jinming Yuan Gui-Shi Liu Lei Chen Zhe Chen Norhana Arsad Yaofei Chen Yunhan Luo | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，11： | 0 |
| 15 | Theoretical Analysis of Coral Reef Stability in South Sea显示文摘In this paper,we utilize the variational limiting equilibrium(LE) procedure to theoretically determine the slope stability of homogeneous coral sand in the South China Sea.By establishing a reasonable functional and calculating its extremum,we can deduce the stability factor of a coral reef identical to that obtained by upper bound analysis.To determine the accuracy of the results obtained using the variational LE procedure,we present some classical examples of homogeneous sand slopes without a hard shell and compare our results with those obtained by the upper bound theorem of plasticity.A series of extensive calculations and comparisons reveal that the results obtained by our proposed analysis method and those obtained using classical methods are slightly different,but the variational results are believable.On the other hand,our method solves some stability factors for reef slopes covered with a hard shell,which indicates that the existence of a hard reef shell may significantly enhance the stability of a reef slope,and that there is strong nonlinear relationship between reef stability and the mechanical characteristics of the reef shell,such as its thickness and strength.Finally,based on the variational results presented in this paper,we present a useful chart that offers a convenient and straightforward way to determine the maximum stability factor of reef slopes.Taking into account the influence of the hard reef shell,we found that,in some limit equilibrium cases,the limit stability factor and critical height of a coral slope could be improved significantly.Therefore,this issue deserves careful attention in engineering practice. | ZHANG Qiyi SHI Hongda GAO Wei LI Jinfeng | 2018 | Journal of Ocean University of China2018，17，5： | 0 |
| 16 | Modelling and Simulation on the Effect of Hot Forming Damage on Three-Point Bending Performance of Beam Components显示文摘The effects of forming damage are analyzed,which occur during hot stamping process,on the load-carrying capacity and failure mode of hot stamped beams.A damage-coupled pre-forming constitutive model was proposed,in which the damage during hot stamping process was introduced into the service response.The constitutive model was applied into the three-point bending simulation of a hot stamped beam,and then the influences of forming damage on the load-carrying capacity and cracks propagation were investigated.The results show that the forming damage reduces the maximum load capacity of the hot stamped beam by 7.5%.It also causes the crack to occur earlier and promotes crack to propagate along the radial direction of the punch. | Weimin Zhuang Pengyue Wang Yang Liu Dongxuan Xie Hongda Shi | 2020 | Journal of Beijing Institute of Technology2020，29，3： | 0 |
| 17 | Regulation of EGFR nanocluster formation by ionic protein-lipid interaction显示文摘表皮的生长因素受体(EGFR ) 的反常激活强烈与许多人的癌症被联系,但是内在的分子的机制充分没被理解。由使用直接随机的光重建显微镜学(dSTORM ) ,我们发现 EGFR 蛋白质在正常的肺的房间膜形成 nanoclusters 簇的上皮的房间和肺癌症房间,而是数字和尺寸显著地在肺癌症房间增加。EGFR 簇的形成被在 anionic 类脂化合物 phosphatidylinositol-4,5-bisphosphate (PIP2 ) 之间的离子的相互作用在血浆膜和 juxtamembrane (JM ) 调停 EGFR 的区域。由 PIP2 弄空或 JM 区域变化聚类的 EGFR 的混乱损害 EGFR 激活并且下游的发信号。而且,在组成地活跃的 EGFR 异种的 JM 区域变化稀释它房间转变的能力。一起,我们的调查结果在 EGFR 发信号和功能加亮 anionic phospholipids 的关键角色,并且揭示新奇机制在癌症解释 EGFR 的异常激活。 | Ye Wang Jing Gao Xingdong Guo Ti Tong Xiaoshan Shi Lunyi Li Miao Qi Yajie Wang Mingjun Cai Junguang Jiang Chenqi Xu Hongbin Ji Hongda Wang | 2014 | Cell Research2014，24，8： | 0 |
| 18 | Preface for Special Issue for the Eighth Chinese-German Joint Symposium on Hydraulic and Ocean Engineering显示文摘1 History of Joint Symposium Social development has tightened the interaction between human beings and the water bodies on planet earth.Human beings benefit much from inland rivers,estuaries,coastal waters and the vast open oceans through hydraulic,ocean engineering and marine renewable energy.However,it is difficult for scientists and engineers to get | ZHENG Jinhai SHI Hongda | 2017 | Journal of Ocean University of China2017，16，4： | 0 |
| 19 | Variable stiffness wires based on magnetorheological liquid metals显示文摘Magnetorheological fluid(MRF)has shown its great potential in the development of large mechanical devices,such as dampers,shock absorbers,rotary brakes,clutches,and prosthetic joints.Recently,more research focus has been invested on using MRF to develop soft,stretchable,and miniaturized devices with variable stiffness for realizing functionalities that cannot be achieved using solid smart materials.Here,based on liquid metal magnetoactive slurries(LMMS),a variable stiffness wire with excellent electrical conductivity is demonstrated.Without exposure to a magnetic field,the LMMS wire has an extremely low stiffness,and can be easily stretched while maintaining an excellent electrical conductivity.When applying a magnetic field,the wire becomes much stiffer and can retain its shape even under a load.The combination of properties of flexibility,high electrical conductivity,and variable stiffness of the wire is harnessed to make a flexible gripper that can grasp objects of various shapes.Moreover,by using gallium instead of its liquid metal alloys,the tunable stiffness range of the LMMS wire is signifi-cantly enhanced and can be controlled using both external magnetic fields and temperature-induced phase change.The presented LMMS wire has the potential to be applied in flexible electronics,soft robotics and so on. | Xiangbo Zhou Jian Shu Hu Jin Hongtai Ren Gang Ma Ning Gong Duan Ge Juan Shi Shi-Yang Tang Guolin Yun Hongda Lu Shuai Dong Xiangpeng Li Shiwu Zhang Weihua Li | 2022 | International Journal of Smart and Nano Materials2022，13，2： | 0 |
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