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| 1 | Sediment Transport in the Nearshore Area of Phoenix Island显示文摘Based on the measured data, suspended sediment concentration, surface sediment grain size, current and waves, the sediment transport mechanisms and pathways in the Phoenix Island area were analyzed using methods of flux decomposition and Grain Size Trend Analysis(GSTA). The results show that net suspended sediment is mainly transported by average current, Stokes drift, and gravitational circulation. The transport direction of suspended sediment is varying and basically following the direction of residual tidal currents. Surface sediment transport pathways are primarily parallel to the coastline along with two convergent centers. Waves and longshore currents have a significant influence on sediment transport, but the influence is limited due to a steep and deep underwater bank. Tidal current is the main controlling factor for sediment transport, especially in the deep water area. Neither suspended nor surface sediment is transported towards the southwest. The South Shandong Coastal Current(SSCC) has little effect on sediment transport processes in the nearshore area of Phoenix Island. | HU Rijun MA Fang WU Jianzheng ZHANG Wei JIANG Shenghui XU Yongchen ZHU Longhai WANG Nan LIU Aijiang | 2016 | Journal of Ocean University of China2016，15，5： | 4 |
| 2 | Suspended Sediment Transport and Deposition in the Zhoushan Archipelago Sea Area显示文摘The transport mechanism and settlement characteristics of suspended sediments are analyzed in this article on the basis of measured data. Results indicate that the concentration and flux of suspended sediments decrease sharply from Hangzhou Bay to the offshore area. Suspended sediment transport is mainly controlled by advection transport and gravitational circulation transport. The settling velocity of suspended sediments gradually decreases from Hangzhou Bay to the offshore area. The settlement of suspended sediments mainly takes place during the turning phase of the tidal currents. | HU Rijun WU Jianzheng ZHU Longhai MA Fang | 2009 | Journal of Ocean University of China2009，8，4： | 4 |
| 3 | Beach Morphology and Coastline Evolution in the Southern Bohai Strait显示文摘The beach studied in this paper spans a length of 51 km and is one of several long sandy beaches in the southern Bohai Strait. Due to the obstruction of islands in the northeast and the influence of the underwater topography, the wave environment in the offshore area is complex; beach types and sediment transport characteristics vary along different coasts. The coastlines extracted from six aerial photographs in different years were compared to demonstrate the evolving features. Seven typical beach profiles were selected to study the lateral beach variation characteristics. Continuous wind and wave observation data from Beihuangcheng ocean station during 2009 were employed for the hindcast of the local wave environment using a regional spectral wave model. Then the results of the wave hindcast were incorporated into the LITDRIFT model to compute the sediment transport rates and directions along the coasts and analyze the longshore sand movement. The results show that the coastline evolution of sand beaches in the southern Bohai Strait has spatial and temporal variations and the coast can be divided into four typical regions. Region(I), the north coast of Qimudao, is a slightly eroded and dissipative beach with a large sediment transport rate; Region(II), the southwest coast of Gangluan Port, is a slightly deposited and dissipative beach with moderate sediment transport rate; Region(III), in the central area, is a beach that is gradually transformed from a slightly eroded dissipative beach to a moderately or slightly strong eroded bar-trough beach from west to east with a relatively moderate sediment transport rate. Region(IV), on the east coast, is a strongly eroded and reflective beach with a weak sediment transport rate. The wave conditions exhibit an increasing trend from west to east in the offshore area. The distribution of the wave-induced current inside the wave breaking region and the littoral sediment transport in the nearshore region exhibit a gradual weakening tendency from west to east, which is opposite to the trend of the wave conditions outside the breaking region. The presence of submerged shoal(Dengzhou Shoal), deep trough(Dengzhou Channel), islands and irregular topography influnces the wave climate, beach types, wave-induced current features, littoral sediment transport trends and coastline evolution patterns in the southern Bohai Strait. Human activities, such as the sand exploitation of Dengzhou Shoal and other coastal engineering projects, also influence the beach morphology and coastline evolution. | ZHANG Wei WU Jianzheng LI Weiran ZHU Longhai HU Rijun JIANG shenghui SUN Yonggen WANG Huijuan | 2015 | Journal of Ocean University of China2015，14，5： | 3 |
| 4 | The formation mechanism of titania nanotube arrays in hydrofluoric acid electrolyte显示文摘 | Jing Bai Baoxue Zhou Longhai Li Yanbiao Liu Qing Zheng Jiahui Shao Xinyuan Zhu Weimin Cai Junsheng Liao Lexi Zou | 2008 | Journal of Materials Science2008，，6： | 1 |
| 5 | Time-Modulated Transmissive Programmable Metasurface for Low Sidelobe Beam Scanning显示文摘Programmable metasurfaces have great potential for the implementation of low-complexity and low-cost phased arrays.Due to the difficulty of multiple-bit phase control,conventional programmable metasurfaces suffer a relatively high sidelobe level(SLL).In this manuscript,a time modulation strategy is introduced in the 1-bit transmissive programmable metasurface for reducing the SLLs of the generated patterns.After the periodic time modulation,harmonics are generated in each reconfigurable unit and the phase of the first-order harmonic can be dynamically controlled by applying different modulation sequences onto the corresponding unit.Through the high-speed modulation of the real-time periodic coding sequences on the metasurface by the programmable bias circuit,the equivalent phase shift accuracy to each metasurface unit can be improved to 6-bit and thus the SLLs of the metasurface could be reduced remarkably.The proposed time-modulated strategy is verified both numerically and experimentally with a transmissive programmable metasurface,which obtains an aperture efficiency over 34%and reduced SLLs of about-2o dB.The proposed design could offer a novel approach of a programmable metasurface framework for radar detection and secure communication applications. | Xudong Baio Fuli Zhang Li Sun Anjie Cao Jin Zhang Chong He Longhai Liu Jianquan Yao Weiren Zhu | 2022 | Research2022，，4： | 1 |
| 6 | The formation mechanism of titania nanotube arrays in hydrofluoric acid electrolyte显示文摘 | Jing Bai Baoxue Zhou Longhai Li Yanbiao Liu Qing Zheng Jiahui Shao Xinyuan Zhu Weimin Cai Junsheng Liao Lexi Zou | 2008 | Journal of Materials Science2008，，6： | 1 |
| 7 | The formation mechanism of titania nanotube arrays in hydrofluoric acid electrolyte显示文摘 | Jing Bai Baoxue Zhou Longhai Li Yanbiao Liu Qing Zheng Jiahui Shao Xinyuan Zhu Weimin Cai Junsheng Liao Lexi Zou | 2008 | Journal of Materials Science2008，，6： | 1 |
| 8 | A CRISPR activation screen identifies genes that enhance SARS-CoV-2 infection显示文摘Dear Editor,Identifying the host factors that are utilized for virus infection and mapping their cell-type expression profile can help to understand the viral tissue/organ tropism and pathogenesis.Much effort has been devoted to the identification of SARS-CoV-2 infection-dependent host factors.CRISPR-based activation(Konermann et al.,2015). | Fei Feng Yunkai Zhu Yanlong Ma Yuyan Wang Yin Yu Xinran Sun Yuanlin Song Zhugui Shao Xinxin Huang Ying Liao Jingyun Ma Yuping He Mingyuan Wang Longhai Tang Yaowei Huang Jincun Zhao Qiang Ding Youhua Xie Qiliang Cai Hui Xiao Chun Li Zhenghong Yuan Rong Zhang | 2023 | Protein & Cell2023，14，1： | 0 |
| 9 | Dynamical Control of Asymmetrically Oblique Tidal Currents to the Sedimentary Characteristics and Development of Linear Sand Ridges in the Liaodong Shoal, East Bohai Sea显示文摘The Liaodong Shoal is a group of linear sand ridges located in the east Bohai Sea of China.In this study,54 surface sediment samples have been collected,current measurements at 4 stations have been carried out and bathymetric data were obtained.The current directions are rightward deflected relative to the strikes of the sand ridges.Affected by the narrowing effect of the ridge,the current velocities exhibited an anti-‘C’type vertical profile.The velocities of the lower currents linearly correlate with the water depths.The near-bed current velocities over the troughs are estimated to be higher than those over the ridges,and this feature could be explained by the loss of kinetic energy together with the conversion between kinetic energy and gravitational potential energy.The sedimentary characteristics that are compatible with the tidal dynamics are developed across the ridges and troughs,including grain size compositions,grain size parameters,mineral compositions and Dhm indexes.The existence of the angles between the current directions and the strikes of the sand ridges is the key factor for the growth of the sand ridges.The asymmetric hydrodynamic features between the flood and ebb currents lead to the differences in the topographical and sedimentary characteristics on both sides of a sand ridge.Insufficient material supply led to the degradation of the sand ridges,and the reduction of the tidal current intensity has led to the development of the subordinate sand ridges in the troughs.Sand ridges are migrating. | ZHANG Lianjie ZHU Longhai WU Jianzheng HU Rijun WANG Peng ZHANG Pan | 2020 | Journal of Ocean University of China2020，19，1： | 0 |
| 10 | Recent geomorphic changes in the Liaohe Estuary显示文摘这份报纸主要基于多年在 Liaohe 河口分析潮汐的免职的 geomorphological 变化在 1990, 1996, 2002 和 2005 的深测术的图表和在 1987, 1994, 2002 和 2005 的 Landsat TM 图象。潮汐的 depositional 系统的进化根据 50 地上凿穿钻和 30 km 在 Liaohe 河里的过去的 20 年期间被学习从 2002 ~ 2005 的浅 stratigraphic 探索。现代 Liaohe 河三角洲的主要潮汐的 depositional 身体位于 Shuangtaizihe 河口。在 10 m 的深度以内的阶层与位于他们下面的 paleo 三角洲外形包括潮汐的河岸外形,潮汐的隧道外形和浅海的外形。潮汐的河岸外形的沉积主要与 siltation 负担由沙和淤泥组成并且在比例分别地推迟了大约 50% 的负担。潮汐的隧道外形和浅海的外形的沉积由属于推迟的负担的粘土似的淤泥和淤泥的泥土组成。学习区域是在自从到 1896 的 Holocene 的旧 Daliaohe 河,旧 Dalinghe 河和 Raoyanghe 河复杂三角洲之间的一个小海湾。在 Shuangtaizihe 河以后很快形成并且膨胀的许多潮汐的河岸被劳动在 1896 挖掘。自从刹车的构造,流量和沉积分泌物在 1958 .The Shuangtaizihe 河口在 Shuangtaizihe 河减少了处于其潮汐的银行正在增加并且膨胀的整个的免职的状态向南方,向西并且向北方。最大的扩大速度是 87 ~ 683 m/a,吝啬的 depositional 率是 0.189 m/a。侵蚀与 0.122 m/a 的平均 erosional 率发生在潮汐的银行的一些部分。潮汐的隧道以 48200 m/a 的迁居速度与沉积被充满。Geomorphologic 变化在流量,海洋动力学和人的活动的联合影响下面发生了。潮汐的当前、沿岸的电流驾驶的沉积的从河沉积的沉积变化的主要来源。 | ZHU Longhai WU Jianzheng XU Yongchen HU Rijun WANG Nan | 2010 | Journal of Geographical Sciences2010，20，1： | 0 |
| 11 | Origin and geochemistry of surface sediments in the mud deposit area offshore the Shandong Peninsula,China显示文摘The waters offshore the Shandong Peninsula separate the North Yellow Sea from the South Yellow Sea,and receive a large amount of terrestrial material from Chinese and Korean rivers,making it an ideal area for studying land-sea interactions.However,little attention has been given to measuring sediment transportation in most previous studies.Based on an analysis in composition of major and trace elements and particle size characteristics from 62 surface sediment samples from the northeastern region off Shandong Peninsula,the type,element composition,and controlling factors of the surface sediments were investigated.In addition,the transportation of sediments from source to sink was described from measured thermohaline data.The results show two types of surface sediments:sandy silt and silt.The sediments were mainly terrestrial;and marine carbonate had little effect on sediment composition.Shown on a binary diagram of Rb/Sc to Co/Sc,the Huanghe(Yellow)and Changjiang(Yangtze)Rivers are the main sources of surface sediments in the study area.The component mixing model showed that the relative contribution of sediment from the Huanghe River was up to 92%,followed by the Changjiang River(8%).The Yellow Sea Warm Current and the North Shandong Peninsula Coastal Current met at∼37.7°N in the study area,and were the main forces carrying sediment from the two main river sources.However,there was a deficit of transported material into the study area in summer.The secondary distribution of sediment from the two river sources was controlled by tidal currents and waves. | Yingtao ZHU Xiuli FENG Longhai ZHU Wei ZHONG | 2021 | Journal of Oceanology and Limnology2021，39，2： | 0 |
| 12 | The effect of aerobic dancing on physical fitness and cognitive function in older adults during the COVID-19 pandemic-a natural experiment显示文摘During the Coronavirus disease(COVID-19),the physical activity of older adults is at a lower level.The study aimed to examine the effectiveness of aerobic dancing on physical fitness and cognitive function in older adults.We conducted a randomized controlled trial with 34 older adults who were assigned into an aerobic dancing group and a control group.Three dance sessions weekly for 60min were scheduled for the aerobic dancing group for a total of 12 weeks.Physical fitness,blood pressure,lipids,glucose,cognitive function were assessed before and after the intervention.Baseline adjusted Analysis of Covariance(ANCOVA)was used to determine whether outcome variables varied between groups at pre-test and post-test.Effect size(Cohen's d)was calculated to determine the differences between groups from baseline to post-test.After 12 weeks,we found that the aerobic dancing group showed significant improvement in memory(portrait memory:F=10.45,p=0.003,d=1.18).The Limit of Stability(LOS)parameters in the aerobic dancing group displayed a significant increase after the intervention(right angle:F=5.90,p=0.022,d=0.60;right-anterior angle:F=4.23,p=0.049,d=0.12).Some beneficial effects were found on flexibility,grip strength,balance and subjective well-being(sit and reach:F=0.25,p=0.62,d=−0.40;grip strength:F=3.38,p=0.08,d=0.89;one-legged standing with eyes closed:F=1.26,p=0.27,d=0.50)in the aerobic dancing group.Aerobic dancing training was effective in improving memory and balance ability in older adults during the COVID-19 pandemic in China.In the future,aerobic dancing is a promising tool to encourage physical activity in older adults. | Lin Wang Fei Guo Chenxi Zhao Minmin Zhao Chenglei Zhao Jiawei Guo Longhai Zhang Ling Zhang Zheng'ao Li Wenfei Zhu | 2023 | Sports Medicine and Health Science2023，5，3： | 0 |
| 13 | Distribution Characteristics and Controlling Factors of Heavy Metals in Surface Sediments from the Bay-Island-Estuary System(BIES):A Case Study in Coastal Waters of Fujian Province,China显示文摘Based on the contents of six heavy metal elements in surface sediments from coastal areas of Fujian Province,the distribution characteristics and controlling factors of six heavy metals in a bay-island-estuary system(BIES)were studied.This paper focuses on the influence of the hydrodynamic environment,and systematically discusses how grain size compositions,chemical environment,tidal current,ocean circulation and human activities influence the distribution and transportation of the heavy metals.The results indicated that the distribution and migration of Cu,Pb,Zn and Cr elements were mainly controlled by natural factors such as regional geological background,grain size compositions,and tidal residual currents.In contrast,As and Hg was mainly affected by human factors such as agriculture and industrial manufacturing.In the BIES,where the chemical environment exerted limited influence,the accumulation and migration of heavy metals are mainly influenced by human activities and enhanced by estuary processes as well as the complex sedimentary dynamic environment caused by many bays and islands. | LIU Bo HU Rijun WANG Yonghong LI Yi ZHU Longhai ZHANG Xiaodong YUAN Xiaodong | 2023 | Journal of Ocean University of China2023，22，5： | 0 |
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