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| 1 | Phaeocystis globosa Bloom Monitoring: Based on P. globosa Induced Seawater Viscosity Modification Adjacent to a Nuclear Power Plant in Qinzhou Bay, China显示文摘The mucus produced by the outbreak of Phaeocystis globosa in the adjacent waters of the Fangchenggang Nuclear Power Plant(FCGNPP) in China has blocked the entrance of the cooling water filtration system of the FCGNPP, and posed a threat to the safe operation of the FCGNPP. At present, there is no related research on whether the changes in seawater viscosity could be used as a new method for monitoring and providing early warning of P. globosa tide. During a complete red tide cycle, the temporal and spatial changes in the hydrological conditions(temperature, salinity, dissolved oxygen), chlorophyll-a(Chl-a), composition and abundance of phytoplankton, number and size of P. globose colonies, concentration of transparent exopolymer particles(TEP) and the seawater viscosity were measured in this study. The results indicate that there was an extremely significant negative correlation between the physical seawater viscosity η_(T,S) and temperature, and the correlation coefficient reached-0.998. The biological seawater viscosity η_(Bio) was positively correlated with the number of P. globosa colonies, and the correlation coefficients is 0.747. Because the increase in phytoplankton abundance, especially during the outbreak of P. globosa and a large amount of mucus produced by the colonies could significantly increase seawater viscosity, we suggest that biological factors were the main reasons for the increase in seawater viscosity. The η_(Bio) was completely consistent with the occurrence process of P. globosa bloom and could be used as a valuable index for P. globosa bloom monitoring. | KANG Zhenjun YANG Bin LAI Junxiang NING Yi ZHONG Qiuping LU Dongliang LIAO Riquan WANG Pei Solomon Felix Dan SHE Zhicai JIA Zhen LAO Yanling LI Nan | 2020 | Journal of Ocean University of China2020，19，5： | 5 |
| 2 | Composition and Distributions of Nitrogen and Phosphorus and Assessment of Eutrophication Status in the Maowei Sea显示文摘Maowei Sea(MWS) is the largest oyster maricuture bay in Southwest China. Surface water from 12 sampling sites were collected during the dry season to study the composition and distribution of different forms of nitrogen(N) and phosphorus(P) beginning from the inner bay to the bay mouth in the MWS. An improved multi-parameter eutrophication index was developed and applied for the evaluation of the water quality in the MWS. Dissolved inorganic nitrogen(DIN), dissolved organic nitrogen(DON), and particulate nitrogen(PN) averagely accounted for 11.28%, 65.32%, and 23.39% of total N(TN) pool, dissolved inorganic phosphorus(DIP), dissolved organic phosphorus(DOP), and particulate phosphorus(PP) averagely accounted for 54.58%, 30.31%, and 15.12% of total P(TP) pool, respectively. DON and DIP were respectively the dominant forms of N and P in surface water of the MWS, during the study period. Concentration trends of DIN, DIP, DOP, PN, dissolved silicate(DSi), total organic carbon(TOC), chemical oxygen demand(COD) decreased from the inner bay to the bay mouth, suggesting that the MWS may be largely influenced by land-based inputs. Based on nutrient contents and stoichiometry, it likely that phytoplankton growth in the MWS is strongly limited by DIP during the dry season. Results from the improved eutrophication index revealed that the water quality in the MWS is in a state of moderate to poor eutrophication(average EI = 0.953). The eutrophication state decreased from the inner bay to the bay mouth. Nitrate(NO3-N), DON, DIP, DOP, and DSi showed significant positive correlations with eutrophication index(r2 = 0.52 – 0.78, P < 0.05), implying that these nutrients are among the significant factors, which could be used in evaluating the eutrophication status of the MWS. | LU Dongliang HUANG Xueren YANG Bin DAN Solomon Felix KANG Zhenjun ZHOU Jiaodi LAO Yanling ZHONG Qiuping WU Heng | 2021 | Journal of Ocean University of China2021，20，2： | 3 |
| 3 | High temperature creep property of silicon particles reinforced high Al Zn based alloys显示文摘The deformation creep characteristics of as cast silicon particles reinforced zinc based alloys (Si/ZA27) were determined by high temperature creep experiments at 453 K and 61.1 MPa condition. The experimental results indicated that the minimum creep rate of the silicon containing alloys are about three fifth of that of the matrix alloy(ZA27). The deformation process is mainly controlled by grain boundary sliding mechanism. Both dislocation climb and disperse silicon phase are also contributed to it. Micro structural changes were investigated during the deformation experiments. | Zhang Liming(张利明) Ding Zhimin(丁志敏) Lao Bin(劳 彬) | 1999 | 中国有色金属学会会刊:英文版1999，9，3： | 2 |
| 4 | Identification of HCC-22-5 tumor-associated antigen and antibody response in patients 显示文摘 | Zhou SF Xie XX Lao M Bin YH | 2006 | Clin China Acta2006，366，12： | 1 |
| 5 | Estimating submarine groundwater discharge at a subtropical river estuary along the Beibu Gulf,China显示文摘In certain regions,submarine groundwater discharge(SGD)into the ocean plays a significant role in coastal material fluxes and their biogeochemical cycle;therefore,the impact of SGD on the ecosystem cannot be ignored.In this study,SGD was estimated using naturally occurring radium isotopes(^(223)Ra and ^(224)Ra)in a subtropical estuary along the Beibu Gulf,China.The results showed that the Ra activities of submarine groundwater were approximately 10 times higher than those of surface water.By assuming a steady state and using an Ra mass balance model,the SGD flux in May 2018 was estimated to be 5.98×10^(6) m^(3)/d and 3.60×10^(6) m^(3)/d based on 224Ra and 223Ra,respectively.At the same time,the activities of Ra isotopes fluctuated within a tidal cycle;that is,a lower activity was observed at high tide and a higher activity was seen at low tide.Based on these variations,the average tidal pumping fluxes of SGD were 1.15×10^(6) m^(3)/d and 2.44×10^(6) m^(3)/d with 224Ra and 223Ra,respectively.Tidaldriven SGD accounts for 24%-51%of the total SGD.Therefore,tidal pumping is an important driving force of the SGD in the Dafengjiang River(DFJR)Estuary.Furthermore,the SGD of the DFJR Estuary in the coastal zone contributes significantly to the seawater composition of the Beibu Gulf and the material exchange between land and sea. | Xilong Wang Kaijun Su Juan Du Linwei Li Yanling Lao Guizhen Ning Li Bin | 2021 | Acta Oceanologica Sinica2021，40，9： | 1 |
| 6 | Saturation Estimation with Complex Electrical Conductivity for Hydrate-Bearing Clayey Sediments:An Experimental Study显示文摘Clays have considerable influence on the electrical properties of hydrate-bearing sediments.It is desirable to understand the electrical properties of hydrate-bearing clayey sediments and to build hydrate saturation(S_(h))models for reservoir evaluation and monitoring.The electrical properties of tetrahydrofuran-hydrate-bearing sediments with montmorillonite are characterized by complex conductivity at frequencies from 0.01 Hz to 1 kHz.The effects of clay and Sh on the complex conductivity were analyzed.A decrease and increase in electrical conductance result from the clay-swelling-induced blockage and ion migration in the electrical double layer(EDL),respectively.The quadrature conductivity increases with the clay content up to 10%because of the increased surface site density of counterions in EDL.Both the in-phase conductivity and quadrature conductivity decrease consistently with increasing Sh from 0.50 to 0.90.Three sets of models for Sh evaluation were developed.The model based on the Simandoux equation outperforms Archie’s formula,with a root-mean-square error(E_(RMS))of 1.8%and 3.9%,respectively,highlighting the clay effects on the in-phase conductivity.The fre-quency effect correlations based on in-phase and quadrature conductivities exhibit inferior performance(E_(RMS)=11.6%and 13.2%,re-spectively)due to the challenge of choosing an appropriate pair of frequencies and intrinsic uncertainties from two measurements.The second-order Cole-Cole formula can be used to fit the complex-conductivity spectra.One pair of inverted Cole-Cole parameters,i.e.,characteristic time and chargeability,is employed to predict S_(h) with an E_(RMS) of 5.05%and 9.05%,respectively. | XING Lanchang ZHANG Shuli ZHANG Huanhuan WU Chenyutong WANG Bin LAO Liyun WEI Wei HAN Weifeng WEI Zhoutuo GE Xinmin DENG Shaogui | 2024 | Journal of Ocean University of China2024，23，1： | 0 |
| 7 | Cooperative control of perpendicular magnetic anisotropy via crystal structure and orientation in freestanding SrRuO_(3)membranes显示文摘Flexible magnetic materials with robust and controllable perpendicular magnetic anisotropy(PMA)are highly desirable for developing flexible high-performance spintronic devices.However,it is still challenge to fabricate PMA films on polymers directly.Here,we report a facile method for synthesizing single-crystal freestanding SrRuO_(3) membranes with controlled crystal structure and orientation using water-soluble Ca_(3-x)Sr_(x)Al_(2)O_(3)6 sacrificial layers.Through cooperative effect of crystal structure and orientation,flexible membranes reveal highly tunable magnetic anisotropy from in-plane to out-of-plane with a remarkable PMA energy of 7×10^(6) erg·cm^(−3).First-principle calculations reveal that the underlying mechanism of PMA modulation is intimately correlated with structure-controlled Ru 4d-orbital occupation,as well as spin-orbital matrix element differences,dependent on the crystal orientation.In addition,even after 10,000 bending cycles,the PMA keeps stable,indicating a robust magnetism reliability in the prepared films.This work provides a feasible approach to prepare the flexible oxide films with strong and controllable PMA. | Zengxing Lu Yongjie Yang Lijie Wen Jiatai Feng Bin Lao Xuan Zheng Sheng Li Kenan Zhao Bingshan Cao Zeliang Ren Dongsheng Song Haifeng Du Yuanyuan Guo Zhicheng Zhong Xianfeng Hao Zhiming Wang Run-Wei Li | 2022 | npj Flexible Electronics2022，6，1： | 0 |
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