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Current observation and analysis based on mooring systems in the Andaman Sea

Journal of Oceanology and Limnology 2024年第2期42卷 484-491页

作者： Yimeng WANG jingsong guo Dapeng QU Zhixin ZHANG Chalermrat SANGMANEE Varintha VASINAMEKHIN Binghuo guo First Institute of Oceanography and Key Laboratory of Marine Science and Numerical ModelingMinistry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Key Laboratory of Marine Science and Numerical Modeling Qingdao 266061China Phuket Marine Biological Center Department of Marine and Coastal ResourcesPhuket 83000Thailand Marine and Coastal Resources Research&Development Institute Department of Marine and Coastal ResourcesBangkok 10210Thailand

The basic structure and intraseasonal evolution of currents in the southeastern Andaman Sea was analyzed based on data collected in 2017 from two subsurface moorings(C1 and C5).Periodic variation in the upper ocean currents of the Andaman Sea was investigated by combining observational and satellite data.Mooring observations show that rapid changes of current speed and direction occurred in May and June,with a significant increase in current velocity at the C1 mooring.In the second half of the year,southward flow dominated at the C1 mooring,and alternating northward and southward flows were evident at the C5 mooring during the same period but the northward flow prevailed in boreal winter.In addition,analysis of the power spectra of the upper currents revealed that the tidal period at both moorings is primarily semidiurnal with weaker energy than that of the low-frequency currents.The upper ocean currents at the C1 and C5 moorings exhibited intraseasonal variation of 30-60 d and 120 d,while the zonal current at the C1 mooring exhibited a notable period of approximately 180 d.Further analysis indicated that the variability of currents in the Andaman Sea is influenced primarily by equatorial Kelvin waves and Rossby wave packets.Moreover,our results suggest that equatorial Kelvin waves from the eastern Indian Ocean entered the Andaman Sea in the form of Wyrtki Jets and propagated primarily along two distinct pathways during the observation period.In addition to coastal boundary Kelvin waves,it was found that a branch of the Wyrtki Jet that directly enters the Andaman Sea and flows northward along the slope of the continental shelf,and reflected Rossby wave packets by topography.

关键词： mooring observation Wyrtki Jet Rossby waves intraseasonal variation

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Case study on the three-dimensional structure of meso-scale eddy in the South China Sea based on a high-resolution model

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Acta Oceanologica Sinica 2016年第2期35卷 29-38页

作者： XIA Changshui JUNG Kyung Tae WANG Guansuo YIN Xunqiang guo jingsong The First Institute of Oceanography State Oceanic Administration (SOA) Qingdao 266061 China Korea Institute of Ocean Science and Technology Ansan 426-744 Republic of Korea

Meso-scale eddies are important features in the South China Sea（SCS）. The eddies with diameters of 50–200 km can greatly impact the transport of heat, momentum, and tracers. A high-resolution wave-tide-circulation coupled model was developed to simulate the meso-scale eddy in the SCS in this study. The aim of this study is to examine the model ability to simulate the meso-scale eddy in the SCS without data assimilations The simulated Sea Surface Height（SSH） anomalies agree with the observed the AVISO SSH anomalies well. The simulated subsurface temperature profiles agree with the CTD observation data from the ROSE（Responses of Marine Hazards to climate change in the Western Pacific） project. The simulated upper-ocean currents also agree with the main circulation based on observations. A warm eddy is identified in winter in the northern SCS. The position and domain of the simulated eddy are confirmed by the observed sea surface height data from the AVISO. The result shows that the model has the ability to simulate the meso-scale eddy in the SCS without data assimilation.The three-dimensional structure of the meso-scale eddy in the SCS is analyzed using the model result. It is found that the eddy center is tilted vertically, which agrees with the observation. It is also found that the velocity center of the eddy does not coincide with the temperature center of the eddy. The result shows that the model has the ability to simulate the meso-scale eddy in the SCS without data assimilations. Further study on the forming mechanism and the three-dimensional structure of the meso-scale eddies will be carried out using the model result and cruise observation data in the near future.

关键词： meso-scale eddy South China Sea high-resolution wave-tide-circulation coupled model

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The observed tidal and residual currents in the Andaman Sea during the second half of 2016

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Acta Oceanologica Sinica 2018年第9期37卷 13-21页

作者： LIU Yanliang guo jingsong WANG Huiwu XUE Yuhuan KHOKIATTIWONG Somkiat YU Weidong Center for Ocean and Climate Research The First Institute of Oceanography State Oceanic Administration Laboratory for Regional Oceanography and Numerical Modeling Pilot Qingdao National Laboratory for Marine Science and Technology(Qingdao) Phuket Marine Biological Center Department of Marine and Coastal Resources

The characteristics of currents and tidal currents in the Andaman Sea（AS） are studied during the second half of2016 using observed data from a moored acoustic Doppler current profiler（ADCP） deployed at 8.6°N, 95.6°E.During the observation period, the mean flow is 5–10 cm/s and largely southward. The root mean square and kinetic energies of the low and high frequency flows, which are divided by a cutoff period of 5 d, are at the same level, indicating their identical importance to the total current. A power spectrum analysis shows that intraseasonal oscillations, a tidal-related semilunar month signal, a semidiurnal tidal signal and periods of 3–4 d are prominent. The barocliny of an eddy kinetic energy is stronger than the mean kinetic energy, both of which are the strongest on the bottom and the weakest at 70 m depth. Residual currents are largely southward（northward） during the summer（winter） monsoon season. Two striking peaks of the southward flow cause the 80 d period of meridional currents. The first peak is part of a large-scale circulation, which enters the AS through the northern channel and exits through the southern channel, and the second peak is part of a local vortex. The 40 d oscillation of the zonal current is forced by geostrophic variations attributed to local and equatorial remote forcing. The tidal current is dominated by semidiurnal constituents, and among these, M2 and N2 are the top two largest major axes. Moreover, astronomical tidal constituents MM and MSF are also significant. Diurnal constituents are weak and shallow water tides are ignorable. The aims are to introduce the new current data observed in the AS and to provide initial insights for the tidal and residual currents in the Andaman Sea.

关键词： Andaman Sea tidal current low frequency current

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产气荚膜梭菌多重TaqMan 荧光定量PCR检测方法的建立

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中国兽医科学 2024年第2期54卷 174-184页

作者：王景松郭亚男王健霖李继东王建东宁夏农林科学院动物科学研究所宁夏银川750002 宁夏大学动物科技学院宁夏银川750021

为建立一种可以对产气荚膜梭菌(C.perfringens)5种毒素基因cpa、cpb、etx、itx和cpe进行快速检测并分型的方法,根据NCBI数据库中公布的产气荚膜梭菌cpa、cpb、etx、itx和cpe毒素基因序列,设计特异性引物和TaqMan探针,通过构建标准阳性... 详细信息

为建立一种可以对产气荚膜梭菌(C.perfringens)5种毒素基因cpa、cpb、etx、itx和cpe进行快速检测并分型的方法,根据NCBI数据库中公布的产气荚膜梭菌cpa、cpb、etx、itx和cpe毒素基因序列,设计特异性引物和TaqMan探针,通过构建标准阳性质粒、优化反应条件、构建标准曲线,并进行特异性、灵敏度、重复性试验以及临床样本检测,建立可同时检测5种毒素基因的多重TaqMan荧光定量PCR方法。结果显示,建立的多重TaqMan荧光定量PCR检测方法的扩增曲线具有良好的线性关系,R^(2)>0.99,90%

关键词：产气荚膜梭菌毒素基因多重TaqMan荧光定量PCR

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微塑料对土壤磷吸附的影响

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重庆大学学报 2024年第4期47卷 12-21,156页

作者：唐子超唐晋梁伦套黎彦均蒋艳雪方芳郭劲松重庆大学环境与生态学院重庆400045

微塑料是一类土壤中广泛存在的新兴污染物,其对土壤磷吸附的影响尚不明确。文中分析了0.1%~10%含量微塑料对土壤磷吸附特性的影响及机制。结果表明,微塑料会使得吸附第一阶段液膜扩散阶段速率显著提升(p<0.05)。与纯土壤(qe=6.456 mg/g... 详细信息

微塑料是一类土壤中广泛存在的新兴污染物,其对土壤磷吸附的影响尚不明确。文中分析了0.1%~10%含量微塑料对土壤磷吸附特性的影响及机制。结果表明,微塑料会使得吸附第一阶段液膜扩散阶段速率显著提升(p<0.05)。与纯土壤(qe=6.456 mg/g)相比,含量1%以下的微塑料显著降低了土壤磷吸附容量(p<0.05),但5%以上的微塑料显著提升了土壤磷吸附容量(p<0.05)。同等含量下,微塑料粒径越小,微塑料-土壤体系的磷吸附量越大。微塑料可与磷竞争吸附位点,降低了微塑料-土壤体系对磷的吸附,但微塑料也可直接吸附磷,故当微塑料为5%及以上时,微塑料-土壤体系对磷的吸附量升高。因此,土壤微塑料污染可显著改变土壤对磷的吸附特性,且与微塑料的含量和粒径等因素密切相关。

关键词：微塑料土壤磷吸附

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优化蒸汽爆破条件辅助提取荷叶离褶伞多糖及其理化性质研究

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菌物学报 2024年第6期43卷 115-128页

作者：罗羽沈秀霖张劲松冯杰刘利平郭庆彬刘艳芳天津科技大学食品科学与工程学院天津300457 上海市农业科学院食用菌研究所、农业农村部南方食用菌资源利用重点实验室、国家食用菌工程技术研究中心、上海市农业遗传育种重点实验室上海201403

以荷叶离褶伞子实体为试验原料,采用蒸汽爆破辅助热水提取荷叶离褶伞多糖。综合考虑粗多糖得率、多糖含量及多糖提取率,在单因素试验基础上,采用响应面法优化蒸汽爆破处理工艺,得到最佳条件为压力2.0 MPa,维压时间90 s,物料大小3 mm。... 详细信息

以荷叶离褶伞子实体为试验原料,采用蒸汽爆破辅助热水提取荷叶离褶伞多糖。综合考虑粗多糖得率、多糖含量及多糖提取率,在单因素试验基础上,采用响应面法优化蒸汽爆破处理工艺,得到最佳条件为压力2.0 MPa,维压时间90 s,物料大小3 mm。在此条件下,荷叶离褶伞粗多糖得率为(20.09±0.20)%,是对照组(未蒸汽爆破处理)的2.05倍,多糖含量为(62.96±0.48)%,是对照组的1.70倍,多糖提取率为(12.65±0.15)%,是对照组的3.49倍。此外,对蒸汽爆破处理前后的多糖进行了理化性质对比,发现处理后β-葡聚糖含量是对照组的2.28倍。红外光谱表明蒸汽爆破处理后仍具有多糖典型吸收峰,但处理前后分子量分布特征差异较大,且经过蒸汽爆破处理所得多糖的单糖组成中葡萄糖占比增加,这与其β-葡聚糖含量升高相一致。免疫活性比较结果显示经过蒸汽爆破处理后富集β-葡聚糖的荷叶离褶伞多糖活性显著优于对照组荷叶离褶伞子实体多糖。

关键词：蒸汽爆破荷叶离褶伞多糖响应面优化理化性质免疫活性

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Identification of Antarctic minke and killer whales with passive acoustic monitoring in Prydz Bay, Antarctica

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Journal of Oceanology and Limnology 2022年第2期40卷 485-495页

作者： Ying JIANG Lian-Gang LÜ Zongwei LIU Chunmei YANG jingsong guo First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Key Laboratory of Marine Science and Numerical Modeling Ministry of Natural ResourcesQingdao 266061China

Although four species of odontocete and four species of baleen whale have been recorded in Prydz Bay,their vocalizations have been rarely investigated.Underwater vocalizations were recorded during March 2017 in Prydz Bay,Antarctica.Bio-duck sounds,downsweeps,inverted“u”shape signals,whistles,pulsed sounds,and broadband clicks were recorded.Bio-duck sounds and downsweeps were associated with Antarctic minke whales(Balaenoptera bonaerensis)based on visual observations.Similarities between inverted“u”shape signals,biphonic calls,and clicks with vocalizations previously described for killer whales(Orcinus orca)lead us believe the presence of Antarctic killer whales.According to sound structures,signal characteristics,and recording location,Antarctic type C killer whales were the most probable candidates to produce these detected calls.These represent the fi rst detection of inverted“u”shape signals in Antarctic waters,and the fi rst report of Antarctic killer whale in Prydz Bay based on passive acoustic monitoring.The co-existence of Antarctic minke and killer whales may imply that minke whales can detect diff erences between the sounds of mammal-eating and fi sh-eating killer whales.Our descriptions of these underwater vocalizations contribute to the limited body of information regarding the distribution and acoustic behavior of cetaceans in Prydz Bay.

关键词： passive acoustic monitoring inverted“u”shaped signal killer whale Antarctic minke whales Prydz Bay type C

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东海区域海洋学调查研究回顾

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海洋科学进展 2024年第1期42卷 1-20页

作者：冉祥滨徐腾飞赵彬郭景松乔淑卿魏泽勋冷疏影自然资源部第一海洋研究所山东青岛266061 崂山实验室山东青岛266237 国家自然科学基金委员会地球科学部北京10085

由于近几十年来日益增强的人类活动影响,近海海洋环境较过去发生了巨大变化;科学认知近海海洋环境特征、变化和控制因素对于应对全球变化具有重要意义,是当前海洋学关注的重要议题。东海作为中国重要的海洋区域之一,存在独特的环流系统... 详细信息

由于近几十年来日益增强的人类活动影响,近海海洋环境较过去发生了巨大变化;科学认知近海海洋环境特征、变化和控制因素对于应对全球变化具有重要意义,是当前海洋学关注的重要议题。东海作为中国重要的海洋区域之一,存在独特的环流系统,孕育了大河口、上升流和黑潮三个代表性的生态系统,其海洋科学研究对于我国的海洋资源开发、环境保护和国家安全具有重要意义。本文通过对东海区域海洋学研究的现状进行综述,围绕海洋生物地球化学这一主线,重点总结了物理海洋学、海洋化学、海洋地质学和生物海洋学的相关研究进展,分析了目前存在的问题,并展望了未来的发展方向。研究表明,东海区域海洋环境受到人类活动和气候变化的深刻影响,呈现新的变化格局;长江径流输入、黑潮北上及其入侵陆架是东海三大生态系统格局形成的主要驱动力。除主要的环流结构外,穿刺锋面和跨陆架海流是连接东海内陆架和外陆架水体的主要动力过程,并促进了碳等重要生源物质的跨陆架输送。相关研究在海洋生态环境、应对气候变化、海洋灾害等方面取得了一定的成果,但仍面临着数据不足、研究领域不够广泛等挑战。东海海洋环境在时间和空间上变化均较大,且存在近岸富营养化、大河口低氧现象等主要环境问题,因此有必要加强东海区域海洋学的研究。未来,应鼓励自由探索研究,加强国内、国际合作,提高数据共享和技术创新能力,推动东海海洋研究迈向更高水平。

关键词：综述区域海洋学海洋调查东海

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Necroptosis-elicited host immunity:GOx-loaded MoS_(2) nanocatalysts for self-amplified chemodynamic immunotherapy

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Nano Research 2022年第3期15卷 2244-2253页

作者： Wensheng Xie jingsong Lu Zhenhu guo Xiaoxiao guo Yongjiu Chi Jieling Ye Junxin Zhang Wanling Xu Lingyun Zhao Yen Wei The Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Research Center of Magnetic and Electronic Materials College of Materials Science and EngineeringZhejiang University of TechnologyHangzhou 310014China State Key Laboratory of Powder Metallurgy Powder Metallurgy Research InstituteCentral South UniversityChangsha 410083China Department of Chemistry Tsinghua UniversityBeijing 100084China.

Nanoparticles induced potent antitumor immunotherapy plays a significant role for enhancing conventional therapeutic effectiveness.However,revealing the pathway of how nanoagents themselves trigger the host immunity or how to maximize the immunotherapy efficacy still needs further exploration.Herein,rose-like MoS2 nanoflowers modified with 2-deoxy-D-glucose(2-DG)and glucose oxidase(GOx)(MPGGFs)have been successfully fabricated via a one-pot hydrothermal reaction and following one-by-one surface modification as a multifunctional nanocatalyst for photothermal therapy enhanced self-amplified chemodynamic immunotherapy(PTT-co-CDT).By introducing GOx,the obtained MPGGFs exhibited self-amplified chemodynamic therapeutic efficacy under hypoxia tumor microenvironment(TME)because of the raised intracellular H2O2 level via enzyme-catalysis of oxygen.Furthermore,combined with the intrinsic excellent photothermal conversion efficiency of MoS2 nanoflowers,PTT-co-CDT performances by MPGGFs could effectively induce the necroptosis of tumor cells both in vitro and in vivo.Then the induced necroptosis via PTT-co-CDT by MPGGFs could directly trigger host immunity by activating the antigen-specific T-cells(CD4^(+) and CD8^(+)).Finally,the excellent in vivo safety of MPGGFs makes us believe that the successful construction of rose-like multifunctional nanocatalyst not only has great potentials for self-amplified chemodynamic immunotherapy,but also provides a paradigm for exploring necroptosis triggered host immunity for cancer treatment.

关键词： chemodynamic immunotherapy necroptosis nanocatalyst photothermal therapy self-amplified

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Recent advances for liquid metals:Synthesis,modification and bio-applications

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Journal of Materials Science & Technology 2023年第12期143卷 153-168页

作者： Zhenhu guo Xiaohan Gao jingsong Lu Wanling Xu Jielin Ye Ying Li Wensheng Xie Lingyun Zhao Key Laboratory of Advanced Materials Ministry of Education of ChinaSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Medicine Tsinghua UniversityBeijing 100084China Department of Neurosurgery Yuquan HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 100084China The Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China

Considering the application requirements for modern biomedicine,research into novel biomaterials with unusual functions is highly desired.As an alternative,liquid metals(LMs),a nontraditional family of metal materials,have piqued the interest of biomedical researchers and made significant advances in biomed-ical areas,owing to their shape transformability,self-healing capability,excellent electrical,and thermal conductivities.In particular,many functionalized strategies for the preparation and modification of LMs or LMs-based composites to achieve extended biomedical applications have been investigated in recent years.These findings provided inspiring while constructive reference for the fabrication and engineering of novel LMs-based composites.Herein,in this topic review,we elaborate on the recent advances of LMs-based functional materials,with particular focuses on the synthesis,modification,and bio-applications,especially in antitumor therapy,antibacterial,contrast agent for imaging,bone repair,electronic skin sen-sor,and nerve connection agent.Further on,the current challenges and future prospects of LMs-based composites are carefully discussed.

关键词： Liquid metals Synthesis Composites Antitumor therapy Bio-application

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