检索结果-南通市图书馆

Effect of dissolved organic nitrogen on the bloom of Prorocentrum donghaiense and Karenia spp. in the East China Sea coastal waters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta oceanologica Sinica 2024年第6期43卷 71-85页

作者： Xiaoru Cui Guangming Zhen Jing Zhao Keqiang Li Xiulin Wang Key Laboratory of Marine Chemistry Theory and Technology/frontiers science center for Deep ocean Multispheres and Earth System of Ministry of Education Ocean University of ChinaQingdao 266100China College of environmental science and Engineering Ocean University of ChinaQingdao 266100China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China

Understan ding the mechanism of harmful algal bloom formation is vital for effectively preventing algal bloom outbreaks in coastal *** *** in the East China Sea show a significant correlation with nutrient ***,the impact of key components of nutrients,especially dissolved organic nitrogen(DON),on the blooms of Karenia *** not *** research is still *** this study,the cruise observations,field mesocosm-flask culture experiments,and a multinitrogen-tri-phytoplankton-detritus model(NTPD) are combined to reveal the quantitative influence of nutrient regimes on the shift of Prorocentrum donghaiense and Karenia *** the East China *** has a synchronism rhythm of *** spp.-diatom loop in the field culture experiment,which is consistent with the results of the cruise *** results showed that the processes of terrigenous DON(TeDON) and dissolved inorganic nitrogen(DIN:NO_(3)^(-)-N,NH_(4)^(+)-N) absorption promoted *** to become the dominant algae in the community;whereas the processes of DON from *** absorption promoted Karenia *** become the dominant algae in ambient DIN *** addition,the three-dimensional fluorescence components of humus C,tyrosine and fulvic acid can indicate the processes of growth and extinction of *** and Karenia spp.,*** study infers that *** and Karenia *** shift mechanism associated with the nutrient regime in coastal waters,which provides a scientific basis for the environmental management of coastal eco system health.

关键词： Karenia spp. Prorocentrum donghaiense nutrients multinitrogen-tri-phytoplankton-detritus model three-dimensional fluorescence

Asexual Reproduction of Aurelia coerulea Polyps in situ on Settling Plates in Jiaozhou Bay,China

在线全文

学校读者我要写书评

暂无评论

Journal of ocean University of China 2024年第5期23卷 1371-1380页

作者： MI Tiezhu ZHU Jianbin ZHEN Yu WANG Guoshan WANG Jianyan Key Laboratory of Marine environment and Ecology Ministry of EducationCollege of Environmental Science and EngineeringOcean University of ChinaQingdao 266100China Laboratory for Marine Ecology and environmental science Qingdao Marine Science and Technology CenterQingdao 266237China frontiers science center for Deep ocean Multispheres and Earth System Ocean University of ChinaQingdao 266100China National Marine Hazard Mitigation Service Ministry of Natural ResourcesBeijing 100194China Department of Life sciences National Natural History Museum of ChinaBeijing 100050China

Jellyfish blooms are increasingly prevalent coastal phenomena,with Aurelia coerulea being a significant *** complex life history of jellyfish,featuring a sessile polyp stage,is a key factor in bloom formation,yet it is challenging to study in the *** study aimed to describe the asexual reproduction of *** polyps in Jiaozhou Bay,China,and to assess their ability to form sedentary colonies and their relationship with environmental *** settling plates,we observed polyps in situ and documented three asexual reproduction modes:budding,strobilation,and podocyst *** parameters including temperature,salinity,dissolved oxygen(DO),chlorophyll a(Chl a),and the biomass of phytoplankton and zooplankton were *** was the predominant reproductive method,featuring stolon budding in autumn and direct budding during the winter and spring *** took place in the colder months,releasing ephyrae between April and *** abundance was positively correlated with seawater temperature and negatively correlated with DO *** at 1.0 m depth showed higher survivorship and proliferation over 8 months,whereas those at 2.0 m depth experienced a steady decline and died within 4 *** study enhances our understanding of the life cycle and asexual reproduction strategies of *** polyps in the field,with implications for predicting and managing jellyfish *** findings underscore the importance of temperature and DO in polyp survival and suggest that initial polyp population proliferation is crucial for long-term survival.

关键词： jellyfish bloom polyps budding strobilation asexual reproduction

Light-field modulation and optimization near metal nanostructures utilizing spatial light modulators

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第10期33卷 1-14页

作者： Zini Cao Hai Lin Yuqing Cheng Yixuan Xu Qihuang Gong Guowei Lü State Key Laboratory for Mesoscopic Physics Collaborative Innovation Center of Quantum MatterFrontiers Science Center for Nano-OptoelectronicsSchool of PhysicsPeking UniversityBeijing 100871China School of Mathematics and Physics University of Science and Technology BeijingBeijing 100083China Collaborative Innovation center of extreme Optics Shanxi UniversityTaiyuan 030006China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China

Plasmonic modes within metal nanostructures play a pivotal role in various nanophotonic ***,a significant challenge arises from the fixed shapes of nanostructures post-fabrication,resulting in limited modes under ordinary illumination.A promising solution lies in far-field control facilitated by spatial light modulators(SLMs),which enable on-site,real-time,and non-destructive manipulation of plasmon *** the robust modulation of the incident light using SLMs,this approach enables the generation,optimization,and dynamic control of surface plasmon polariton(SPP)and localized surface plasmon(LSP)*** versatility of this technique introduces a rich array of tunable degrees of freedom to plasmon-enhanced spectroscopy,offering novel approaches for signal optimization and functional expansion in this *** paper provides a comprehensive review of the generation and modulation of SPP and LSP modes through far-field control with SLMs and highlights the diverse applications of this optical technology in plasmon-enhanced spectroscopy.

关键词： surface plasmon spatial light modulator dynamic control plasmon-enhanced spectroscopy

General formalism for dirty extreme-mass-ratio inspirals

在线全文

学校读者我要写书评

暂无评论

science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 22-29页

作者： Ye Jiang Wen-Biao Han Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China School of Astronomy and Space science University of Chinese Academy of SciencesBeijing 100049China School of Fundamental Physics and Mathematical sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Shanghai frontiers science center for Gravitational wave Detection Shanghai 200240China

Detecting the environment around the supermassive black holes and tests of general relativity are important applications of extreme-mass-ratio inspirals(EMRIs).There is still a challenge to efficiently describe various“dirty”impacts on the inspirals,such as dark matter,gas,dipole radiation,and electromagnetic *** this study,we find the inherent linearity of the asymptotic solution of the inhomogeneous Teukolsky *** the basis of this property,we completely decouple the factors of the perturber and the background spacetime in the energy fluxes and *** the new decoupling form,the waveforms of EMRIs with non-geodesic motion in Kerr spacetime can be conveniently *** will help to resolve the environment(including gas,field,dark matter,electromagnetic interaction)around supermassive black holes and test general relativity.

关键词： gravitational wave Teukolsky equation extreme-mass-ratio inspirals

Correction to:Error Calculation of Large-Amplitude Internal Solitary waves Within the Pycnocline Introduced by the Strong Stratification Approximation

在线全文

学校读者我要写书评

暂无评论

哈尔滨工程大学学报（英文版） 2024年第1期23卷 247-247页

作者： Cunguo Xu Zhan Wang Masoud Hayatdavoodi Qingdao Innovation and Development center of Harbin Engineering University Qingdao 266555China College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China frontiers science center for wave field of extreme ocean environment Harbin Engineering UniversityHarbin 150001China Civil Engineering Department School of Science and EngineeringUniversity of DundeeDundee DD14HNUK

In the original publication the third author name is published incorrectly as“Hayatdavoodi Masoud”.The correct author name should be read as“Masoud Hayatdavoodi”.The correct author name is available in this correc... 详细信息

关键词： Strong Internal correction

Intensifying electrified flow-through water treatment technologies via local environment modification

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

frontiers of environmental science & Engineering 2024年第6期18卷 17-25页

作者： Zheng-Yang Huo Xiaoxiong Wang Xia Huang Menachem Elimelech School of environment and Natural Resources Institute of Ecological CivilizationRenmin University of ChinaBeijing 100872China Institute for ocean Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China center of Double Helix Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China State Key Joint Laboratory of environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Chemical and environmental Engineering Yale UniversityNew HavenCT 06520-8286USA

Removing high-risk and persistent contaminants from water is challenging,because they typically exist at low concentrations in complex water *** flow-through technologies are viable to overcome the limitations induced by mass transport for efficient contaminant *** the local environment of the flow-through electrodes offers opportunities to further improve the reaction kinetics and selectivity for achieving near-complete removal of these contaminants from ***,we present state-of-the-art local environment modification approaches that can be incorporated into electrified flow-through technologies to intensify water *** first show methods of nanospace incorporation,local geometry adjustment,and microporous structure optimization that can induce spatial confinement,enhanced local electric field,and microperiodic vortex,respectively,for local environment *** then discuss why local environment modification can complement the flow-through electrodes for improving the reaction rate and ***,we outline appropriate scenarios of intensifying electrified flow-through technologies through local environment modification for fit-for-purpose water treatment applications.

关键词： Point-of-use water treatment Electrified membrane Advection-enhanced mass transport Water decontamination and disinfection Emerging contaminants

Progress and realization platforms of dynamic topological photonics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第1期33卷 75-87页

作者：闫秋辰马睿胡小永龚旗煌 State Key Laboratory for Mesoscopic Physics&Department of Physics Collaborative Innovation Center of Quantum Matter&Frontiers Science Center for Nano-optoelectronicsBeijing Academy of Quantum Information SciencesPeking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Collaborative Innovation center of extreme Optics Shanxi UniversityTaiyuan 030006China

Dynamic topological photonics is a novel research field, combining the time-domain optics and topological *** this review, the recent progress and realization platforms of dynamic topological photonics have been well *** definition, measurement methods and the evolution process of the dynamic topological photonics are demonstrated to better understand the physical diagram. This review is meant to bring the readers a different perspective on topological photonics, grasp the advanced progress of dynamic topology, and inspire ideas about future prospects.

关键词： dynamic topological photonics optical waveguide array topological optical lattice ultrafast spectroscopy

Cavity-enhanced metrology in an atomic spin-1 Bose−Einstein condensate

在线全文

学校读者我要写书评

暂无评论

frontiers of physics 2024年第3期19卷 185-196页

作者： Renfei Zheng Jieli Qin Bing Chen Xingdong Zhao Lu Zhou School of Physics Hefei University of TechnologyHefei 230009China State Key Laboratory of Precision Spectroscopy Department of PhysicsSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China School of Physics and Materials science Guangzhou University230 Wai Huan Xi RoadGuangzhou Higher Education Mega CenterGuangzhou 510006China Department of Physics Henan Normal UniversityXinxiang 453007China Collaborative Innovation center of extreme Optics Shanxi UniversityTaiyuan 030006China

Atom interferometer has been proven to be a powerful tool for precision metrology. Here we propose a cavity-aided nonlinear atom interferometer, based on the quasi-periodic spin mixing dynamics of an atomic spin-1 Bose−Einstein condensate trapped in an optical cavity. We unravel that the phase sensitivity can be greatly enhanced with the cavity-mediated nonlinear interaction. The influence of encoding phase, splitting time and recombining time on phase sensitivity are carefully studied. In addition, we demonstrate a dynamical phase transition in the system. Around the criticality, a small cavity light field variation can arouse a strong response of the atomic condensate, which can serve as a new resource for enhanced sensing. This work provides a robust protocol for cavity-enhanced metrology.

关键词： nonlinear atom interferometer spin-1 Bose−Einstein condensate spin-mixing dynamics quantum Fisher information parameter estimation

Amplification effect of intra-seasonal variability of soil moisture on heat extremes over Eurasia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Climate Change Research 2024年第1期15卷 1-8页

作者： Yi-Nuo WANG Zhi-Yan ZUO Liang QIAO Kai-Wen ZHANG Mei-Yu CHANG Dong XIAO Zou-Xing LIN Huan WANG Department of Atmospheric and oceanic sciences Institute of Atmospheric SciencesFudan UniversityShanghai 200438China CMA-FDU Joint Laboratory of Marine Meteorology Shanghai 200438China Key Laboratory of Cites Mitigation and Adaptation to Climate Change in Shanghai China Meteorological AdministrationShanghai 200030China Collaborative Innovation centeron Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 211800China Shanghai frontiers science center of Atmosphere-ocean Interaction Shanghai 200123China College of Geography and Resources science Sichuan Normal UniversityChengdu 610101China National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary Shanghai 202183China Chinese Academy of Meteorological sciences China Meteorological AdministrationBeijing 100081China

Drying soil has been conducive to a high frequency of extreme high-temperature events over many regions worldwide in recent ***,changes in the intraseasonal variability of soil moisture can also influence the likelihood of extremely high *** previous investigators have examined the association between extremely high temperatures and large-scale atmospheric circulation variability,the role of land-atmosphere coupling dominated by soil moisture variability in extremely high temperatures,particularly over the Eurasian continent,is not well *** this study,on the basis of the Land Surface,Snow,and Soil Moisture Model Intercomparison Project,we found that land-atmosphere feedback amplified the variability of soil moisture in most regions of Eurasia during summer from 1980 to *** amplification of soil moisture variability is closely correlated with more intensive intraseasonal variability of surface air temperature and more frequent occurrences of extreme high-temperature events,particularly in Europe,Siberia,Northeast Asia,and the Indochina *** correlation implies that increasing the intraseasonal variability of soil moisture results in a high likelihood of heat extremes during summer in most parts of Eurasia except Asian desert *** the intraseasonal timescale,the land-atmosphere coupling increases the variability of surface sensible heat flux and net long-wave radiation heating the atmosphere by intensifying the soil moisture variability,thus amplifying the variability of surface air temperature and enhancing the extreme high-temperature *** finding demonstrates the importance of changes in intraseasonal soil moisture variability for the increasing likelihood of heat extremes in summer.

关键词： Soil moisture Intraseasonal variability Land-atmosphere coupling Heat extremes