首页期刊导航|中国海洋大学学报（自然科学英文版）
期刊信息/Journal information
中国海洋大学学报（自然科学英文版）
中国海洋大学学报（自然科学英文版）

文圣常（院士）

季刊

1672-5182

xbywb@ouc.edu.cn

0532-82032408

266003

山东省青岛市鱼山路5号

中国海洋大学学报（自然科学英文版）/Journal Journal of Ocean University of ChinaCSCDCSTPCD北大核心SCI
查看更多>>创刊宗旨：我刊及时反映和报道海洋科学与工程、海洋环境科学与工程、海洋气象、海洋药物、海洋遥感、海洋信息系统与管理工程、水产、湖沼等领域的最新研究成果。论文栏目设置：研究论文、技术报告、研究快报、高新技术与信息跟踪、特约评介、综述等。读者对象：国内海洋及相关学科领域的科技人员、教师和管理人员，主要是国际海洋科学界的同行，以英语为语言工具的读者。
正式出版
收录年代

    Single Photon Detection Technology in Underwater Wireless Optical Communication:Modulation Modes and Error Correction Coding Analysis

    GAI LeiLI WendongWANG Guoyu
    405-414页
    查看更多>>摘要：This study explores the application of single photon detection(SPD)technology in underwater wireless optical communica-tion(UWOC)and analyzes the influence of different modulation modes and error correction coding types on communication perform-ance.The study investigates the impact of on-off keying(OOK)and 2-pulse-position modulation(2-PPM)on the bit error rate(BER)in single-channel intensity and polarization multiplexing.Furthermore,it compares the error correction performance of low-density parity check(LDPC)and Reed-Solomon(RS)codes across different error correction coding types.The effects of unscattered photon ratio and depolarization ratio on BER are also verified.Finally,a UWOC system based on SPD is constructed,achieving 14.58 Mbps with polarization OOK multiplexing modulation and 4.37 Mbps with polarization 2-PPM multiplexing modulation using LDPC code error correction.
      原文链接:
    • 万方数据
    • 维普

    Accurate Source-Receiver Positioning Method for a High-Resolution Deep-Towed Multichannel Seismic Exploration System

    LI JingLIU KaiWEI ZhengrongZHANG Liancheng...
    415-426页
    查看更多>>摘要：The near-seabed multichannel seismic exploration systems have yielded remarkable successes in marine geological disaster assessment,marine gas hydrate investigation,and deep-sea mineral exploration owing to their high vertical and horizontal resolution.However,the quality of deep-towed seismic imaging hinges on accurate source-receiver positioning information.In light of existing technical problems,we propose a novel array geometry inversion method tailored for high-resolution deep-towed multichannel seis-mic exploration systems.This method is independent of the attitude and depth sensors along a deep-towed seismic streamer,accounting for variations in seawater velocity and seabed slope angle.Our approach decomposes the towed line array into multiline segments and characterizes its geometric shape using the line segment distance and pitch angle.Introducing optimization parameters for seawater velocity and seabed slope angle,we establish an objective function based on the model,yielding results that align with objective reality.Employing the particle swarm optimization algorithm enables synchronous acquisition of optimized inversion results for array geometry and seawater velocity.Experimental validation using theoretical models and practical data verifies that our approach effectively en-hances source and receiver positioning inversion accuracy.The algorithm exhibits robust stability and reliability,addressing uncer-tainties in seismic traveltime picking and complex seabed topography conditions.
      原文链接:
    • 万方数据
    • 维普

    Friction Characteristics Between Marine Clay and Construction Materials

    KOU HaileiHUANG JiamingCHENG Yang
    427-437页
    查看更多>>摘要：Structure-soil interface friction characteristics is of importance to investigate the interaction between engineering structures and soils,especially for offshore structures.The interface friction behavior between marine clay and structural materials with different roughness was studied in this paper by using 3D optical scanning tests,a modified direct shear device and numerical simulation.Re-lationships between the surface roughness of structures,water content and interface friction angle were presented by model tests.The increase of water contents decreased the interface friction angles.For interfaces with different roughness,the interface friction angles will be smaller than that of the soil when the water content exceeds a certain value.The roughness of the interface and the water content of the soil are mutually coupled to influence the coefficient of friction(COF).This paper proposed a Finite Element Method(FEM)to simulate the interface direct shear tests of structures with different roughness.The surface models with different roughness are established based on the structure data obtained by 3D scanning.The Coupled Eulerian-Lagrangian(CEL)approach was employed to analyse soils sheared by irregular surfaces.The interface behavior for interfaces with different roughness under cyclic shear stresses was analyzed by FEM.
      原文链接:
    • 万方数据
    • 维普

    Characteristics Variation of Atmospheric CO2 and CH4 in Yongxing Island,South China Sea

    LV HonggangJIANG YifeiWANG Haiyan
    438-446页
    查看更多>>摘要：Using the observation data in Yongxing Island,South China Sea(SCS)from December 2013 to November 2018,the multiple time scales variation of atmospheric CO2 and CH4 were analyzed to understand their temporal variation characteristics and controlling factors.The regional-averaged background mole fractions of CO2 and CH4 both show a single-period sinusoidal variation with a lower value at noon and a higher value in the wee hours.In the seasonal scale,they exhibited a significant sea-sonal difference with higher values in winter and lower values in summer.In the annual scale,CO2 and CH4 both show an increas-ing trend,with an annual growth rate of approximately 3.2ppm and 12ppb,respectively.The annual growth rate at this site was higher than the global average.The change in atmospheric CO2 and CH4 in Yongxing Island was probably caused by the higher emission of the surrounding areas and the airflows driven by monsoon.Hopefully,the long-term and high-resolution greenhouse gases(GHGs)dataset will aid relevent researchers and decision-makers in performing more in-depth studies for GHG sources in order to derive effective strategies.
      原文链接:
    • 万方数据

    Insight into the Inhibition of the Poisonous Sulfide Production from Sulfate-Reducing Microbiota in Mariculture Habitat

    ZHAO XuningZHANG ZhimingZHAO YangguoMUPINDU Progress...
    447-454页
    查看更多>>摘要：The production of toxic sulfides is a common environmental problem in mariculture.Therefore,the effective inhibition of sulfidogens is the key to prevent sulfides production.In this study,the possibility and mechanism of nitrate(NO3-)inhibiting the activity of the sulfate-reducing microbiota(SRM)from mariculture sediments was investigated.The results showed that 1,3,and 5 mmol L-1 NO3 continuously inhibited sulfide production for 1-3 d.As NO3-dosage increased to 7 mmol L-1,the duration of inhi-bition increased to 6 days.Denitrifying product NO2 heavily inhibited the activity of dissimilar sulfate reductase gene(dsrB)by 3 orders,which was the main reason that the sulfate-reducing activity was inhibited.The SRM structure changed significantly with the dosage of NO3,while the abundance of sulfidogens Desulfovibrio species increased due to their capability of detoxifying nitrite through nitrite reductase.Hence,sulfidogens Desulfovibrio species are more adaptable to a high nitrate/nitrite environment,and the traditional control strategies by dosing nitrate/nitrite should be paid more attention to.The findings will serve as helpful guidelines for sulfate-reducing microbiota in the habitat of mariculture to reduce their generation of poisonous sulfide.
      原文链接:
    • 万方数据
    • 维普

    Impacts of Water-Sediment Regulation Scheme on Chromophoric Dissolved Organic Matter in the Lower Yellow River

    LIU XiaoJIANG XueyanLIU QianSUI Juanjuan...
    455-466页
    查看更多>>摘要：As a river with more than 3000 reservoirs in its watershed,the Yellow River has been affected by dams not only on the sediment load,but also on the water quality.Water-sediment regulation scheme(WSRS),which has been carried out annually in the Yellow River since 2002,is a typical human activity affecting river water quality.Chromophoric dissolved organic matter(CDOM)in river is susceptible to changes in ecological and environmental conditions as well as human activities.Here,we report variations in dissolved organic carbon concentrations,compositions and sources of CDOM in time series samples in the lower Yellow River dur-ing WSRS.In addition,a parallel factor fluorescence analysis(PARAFAC)method is applied to identify different fluorescent com-ponents in water samples during WRSR,showing four major components including tryptophan-like component(C1),microbial hu-mic-like component(C2),terrestrial humic-like component(C3)and tyrosine-like component(C4).In general,C1 increased after water regulation,while C2 and C3 increased after sediment regulation,indicating that the water and sediment released by the dam have different effects on CDOM compositions.Under the impacts of the dam,source of CDOM in the lower Yellow River is mainly autochthonous related to microbial activities,and is regulated by the terrestrial input during WSRS period.Sediment resuspension inhibits microbial activities and reduces the production of autochthonous CDOM.Overall,human activities especially WSRS,as exemplified here,significantly alter the quality and quantity of CDOM in the lower Yellow River,affecting CDOM dynamics and biogeochemical processes in the estuarine environment.
      原文链接:
    • 万方数据
    • 维普

    Study of the Relationship Between New Ionic Interaction Parameters and Salt Solubility in Electrolyte Solutions Based on Molecular Dynamics Simulation

    SUN WentingHU YangdongZHENG JiahuanSUN Qichao...
    467-476页
    查看更多>>摘要：Studying the relationship between ionic interactions and salt solubility in seawater has implications for seawater desali-nation and mineral extraction.In this paper,a new method of expressing ion-to-ion interaction is proposed by using molecular dy-namics simulation,and the relationship between ion-to-ion interaction and salt solubility in a simulated seawater water-salt system is investigated.By analyzing the variation of distance and contact time between ions in an electrolyte solution,from both spatial and temporal perspectives,new parameters were proposed to describe the interaction between ions:interaction distance(ID),and interac-tion time ratio(ITR).The best correlation between characteristic time ratio and solubility was found for a molar ratio of salt-to-water of 10:100 with a correlation coefficient of 0.96.For the same salt,a positive correlation was found between CTR and the molar ratio of salt and water.For type 1-1,type 2-1,type 1-2,and type 2-2 salts,the correlation coefficients between CTR and solubility were 0.93,0.96,0.92,and 0.98 for a salt-to-water molar ratio of 10:100,respectively.The solubility of multiple salts was predicted by simulations and compared with experimental values,yielding an average relative deviation of 12.4％.The new ion-interaction pa-rameters offer significant advantages in describing strongly correlated and strongly hydrated electrolyte solutions.
      原文链接:
    • 万方数据
    • 维普

    Molecular Characterization and Antibacterial Activity of a G-Type Lysozyme in Yellow Drum(Nibea albiflora)

    XIAO YaoLI JiachengTIAN QianqianWU Baolan...
    477-486页
    查看更多>>摘要：Lysozyme(EC3.2.1.17)plays an important role in the immune response;as a nonspecific immune factor,it can resist cau-sative agents.Lysozyme can be divided into c-type and g-type in fish.In a previous study,through genome-wide association analysis,the g-type lysozyme gene,which is named NaLyg in yellow drum(Nibea albiflora),was found to be a key candidate gene for disease resistance in response to Vibrio harveyi infection.The cDNA of NaLyg was 1025 bp,including four exons and three introns,and its open reading frame(ORF)had a full-length of 582bp,encoding 193 amino acids.NaLyg was found to be conserved during evolution through bioinformatic analyses.The NaLyg protein possessed a sugar binding domain and three catalytic sites,including Glu71,Asp84 and Asp101.Quantitative qRT-PCR results confirmed that NaLyg gene mRNA was visibly increased after V.harveyi infection.The NaLyg protein purified by prokaryotic expression killed some gram-negative bacterial pathogens by inducing cell wall destruction,including V.harveyi,Aeromonas hydrophila and Edwardsiella tarda.Moreover,the NaLyg protein killed two gram-positive bacteria,Bacillus subtilis and Staphylococcus aureus.Taken together,the experimental results suggested that the NaLyg protein of N.albiflo-ra played an important role in fighting bacterial infections.
      原文链接:
    • 万方数据
    • 维普

    Genome-Wide Characterization of the Hyaluronidase Gene Family and Their Potential Roles in Viviparous Black Rockfish(Sebastes schlegeli)

    LIU ZhiyingNIU JingningZHAO XiLIU Huaxiang...
    487-498页
    查看更多>>摘要：Black rockfish(Sebastes schlegelii)has evolved viviparous reproduction mode.Different from the oviparous fishes,the spermatozoa of black rockfish are stored on the surface of ovarian follicle for over four months until the egg mature in ovary,while the adaptive evolution of fertilization-related genes remains to be studied.In the present study,based on the genome and transcriptome information of black rockfish,a total of 10 hyaluronidase genes were identified by phylogenetic and sequence analyses,including hyall,hyal2,hyal3,hyal4,hyal6 and spam1a,spam1b,spam1c and spam1d.The spam1 subfamilies,including spam1a,spam1b,spam1c and spam1d,were significantly expanded compared to other species.The adaptive evolution of hyaluronidase was further investigated by selection pressure analysis of branch model and branch site model.The results showed that only spam1 subfamily was positively selected with a large number of positive selection sites,and the evolution rate was significantly higher thanthose of other teleosts.Two positively selected sites,LYS-171 and GLY-164,were located in the neutral hyaluronidase activity domain,which was pivotal for SPAM1 to participate in enzymatic hydrolysis of the extracellular hyaluronic acid matrix and mediate acrosome reaction in mammals.Furthermore,spam1 was mainly expressed in spermatocytes,secondary spermatocytes,and spermatids of testis,whereas it was not found in metamorphic sperm and mature sperm based on the spatiotemporal expression analysis.All results indicated that spam1 might originate from the testis and might be an adaptation of viviparous trait in black rockfish.
      原文链接:
    • 万方数据
    • 维普

    Identification and Expression Profile of a Neuropeptide LFRFamide-Like Gene During Different Stages of Gonadal Development in the Cephalopod Sepia pharaonis

    QIU JiayinSUN LianlianLI ShuangZHOU Xu...
    499-508页
    查看更多>>摘要：Neuropeptides are widely distributed in vertebrates and invertebrates,regulating a variety of physiological activities in the organisms,such as metabolism,feeding and reproduction.In this study,to explore the function of neuropeptide LFRFamide in Sepia pharaonis,the full-length cDNA of LFRFamide-like gene(named SpLFRFL,MG869822.1)was identified with rapid amplification of cDNA ends(RACE)method.The sequence of SpLFRFL was 860 bp in length and encoded 188 amino acids containing 4 different ma-ture peptides:1 copy of PHTPFRFamide,NSLFRFamide,TIFRFamide,and 3 copies of GNLFRFamide.Multiple alignment and phy-logenetic analysis results showed that SpLFRFL shared high identity with LFRFamides of Sepia officinalis and Sepiella japonica and had the closest relationship with them.Through quantitative Real-time PCR(qRT-PCR),it was found that the SpLFRFL gene was high-ly expressed in the optic lobe and brain at three different stages during gonad development in both genders.Moreover,the four ma-ture peptides at a concentration of 0.01 μmol L-1 could inhibit the protein synthesis in the Chinese hamster ovary cell strain-K1(CHO-Kl)induced by SpGnRH.These data suggest that SpLFRFL might be involved in the development and reproduction of SS.pharaonis.The results can contribute to future studies on neuropeptide evolution and function and benefit the cuttlefish farming.
      原文链接:
    • 万方数据
    • 维普