检索结果-南通市图书馆

Atmospheric and Oceanic Science Letters 2025年第1期18卷 24-31页

作者： Tiantian Tang Jiaying He Huihang Sun Jingjia Luo Institute for Climate and application Research(ICAR)/Key laboratory of Meteorological Disaster Nanjing University of Information Science and TechnologyNanjingChina

A remarkable marine heatwave,known as the“Blob”,occurred in the Northeast Pacific Ocean from late 2013 to early 2016,which displayed strong warm anomalies extending from the surface to a depth of 300 *** study employed two assimilation schemes based on the global Climate Forecast System of Nanjing University of Information Science(NUIST-CFS 1.0)to investigate the impact of ocean data assimilation on the seasonal prediction of this extreme marine *** sea surface temperature(SST)nudging scheme assimilates SST only,while the deterministic ensemble Kalman filter(EnKF)scheme assimilates observations from the surface to the deep *** latter notably improves the forecasting skill for subsurface temperature anomalies,especially at the depth of 100-300 m(the lower layer),outperforming the SST nudging *** excels in predicting both horizontal and vertical heat transport in the lower layer,contributing to improved forecasts of the lower-layer warming during the *** improvements stem from the assimilation of subsurface observational data,which are important in predicting the upper-ocean *** results suggest that assimilating ocean data with the EnKF scheme significantly enhances the accuracy in predicting subsurface temperature anomalies during the Blob and offers better understanding of its underlying mechanisms.

关键词： Seasonal forecast Ocean data assimilation marine heatwave Subsurface temperature

Effects of carbon content on the microstructure and tensile properties of a low-density steel

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong Jiang Zhongwu Zhang Key laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key laboratory of Metal Material for marine Equipment and application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

application of the improved dung beetle optimizer,muti-head attention and hybrid deep learning algorithms to groundwater depth prediction in the Ningxia area,China

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2025年第1期18卷 18-23页

作者： Jiarui Cai Bo Sun Huijun Wang Yi Zheng Siyu Zhou Huixin Li Yanyan Huang Peishu Zong Collaborative Innovation Center on forecast and Evaluation of Meteorological Disasters/Key laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjingChina Southern marine Science and Engineering Guangdong laboratory(Zhuhai) ZhuhaiChina China Meteorological Administration Key Laboratory of Transportation MeteorologyNanjingChina Jiangsu Meteorological Observatory NanjingChina

Due to the lack of accurate data and complex parameterization,the prediction of groundwater depth is a chal-lenge for numerical *** learning can effectively solve this issue and has been proven useful in the prediction of groundwater depth in many *** this study,two new models are applied to the prediction of groundwater depth in the Ningxia area,*** two models combine the improved dung beetle optimizer(DBO)algorithm with two deep learning models:The Multi-head Attention-Convolution Neural Network-Long Short Term Memory networks(MH-CNN-LSTM)and the Multi-head Attention-Convolution Neural Network-Gated Recurrent Unit(MH-CNN-GRU).The models with DBO show better prediction performance,with larger R(correlation coefficient),RPD(residual prediction deviation),and lower RMSE(root-mean-square error).Com-pared with the models with the original DBO,the R and RPD of models with the improved DBO increase by over 1.5%,and the RMSE decreases by over 1.8%,indicating better prediction *** addition,compared with the multiple linear regression model,a traditional statistical model,deep learning models have better prediction performance.

关键词： Groundwater depth Multi-head attention Improved dung beetle optimizer CNN-LSTM CNN-GRU Ningxia

Flexible Graphene Field‑Effect Transistors and Their application in Flexible Biomedical Sensing

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai Wang Yanbo Liang Chao Wang Yunhong Zhang Hong Liu Yu Zhang Lin Han Institute of marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

Efficient production of mannosylerythritol lipids by a marine yeast Moesziomyces aphidis XM01 and their application as self‑assembly nanomicelles

在线全文

学校读者我要写书评

暂无评论

marine Life Science & Technology 2022年第3期4卷 373-383页

作者： Guanshuo Yu Xiaoxiang Wang Chao Zhang Zhe Chi Zhenming Chi Guanglei Liu College of marine Life Sciences Ocean University of ChinaQingdao 266003China laboratory for marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

Mannosylerythritol lipids(MELs)are one of the most promising biosurfactants because of their excellent physicochemical properties,high environmental compatibility,and various biological *** this study,a mangrove yeast strain Moesziomyces aphidis XM01 was identified and used for efficient extracellular MEL *** MEL titer reached 64.5±0.7 g/L at flask level within 7 days with the optimized nitrogen and carbon source of 2.0 g/L NaNO_(3) and 70 g/L soybean ***,during a 10-L two-stage fed-batch fermentation,the final MEL titer reached 113.6±3.1 g/L within 8 days,with prominent productivity and yield of 14.2 g·L^(−1)·day^(−1)and 94.6 g/g_((glucose and soybean oil)).Structural analysis indicated that the produced MELs were mainly MEL-A and its fatty acid profile was composed of only medium-chain fatty acids(C8–C12),especially C10 acids(77.81%).Further applications of this compound were evaluated as one-step selfassembly *** obtained MEL nanomicelles showed good physicochemical stability and antibacterial *** addition,using clarithromycin as a model hydrophobic drug,the MEL nanomicelles exhibited high loading capacity and could be used for the controlled and sustained drug release in low-pH ***,*** XM01 is an excellent candidate for efficient MEL production,and the prepared MEL nanomicelles have broad application prospects in the pharmaceutical and cosmetic fields.

关键词： Mannosylerythritol lipids Two-stage fed-batch fermentation Self-assembly nanomicelles Antimicrobial activity Drug encapsulation and release

Prospects on mangrove knowledge services in the smart era: From plant atlas to knowledge graphs

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2025年第1期 111-127页

作者： Zhi-Wei HOU Wenlong JING Cheng-Zhi QIN Ji YANG Qing XIA Xiaoling YIN Key laboratory of Guangdong for Utilization of Remote Sensing and Geographical Information System Guangdong Open Laboratory of Geospatial Information Technology and Application Guangzhou Institute of Geography Guangdong Academy of Sciences Southern marine Science and Engineering Guangdong laboratory (Guangzhou) State Key laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences College of Resources and Environment University of Chinese Academy of Sciences School of traffic & Transportation Engineering Changsha University of Science and Technology

Mangroves are crucial to the ecological security of the Earth and human well-being. Their management, conservation, and restoration are of great importance and necessitate the support of spatio-temporal information and multidisciplinary knowledge such as biology and ecology. Traditional knowledge services such as plant atlas provide illustrated textual knowledge of mangroves. However, this kind of service is oriented to information retrieval and is incapable of effectively mining and utilizing fragmented knowledge from multi-source heterogeneous data, facing the problem of “massive data, rare knowledge”. Knowledge graphs are capable of extracting, organizing, and fusing the knowledge contained in massive data into semantic networks that can be understood and computed by computers. They provide a solution for the realization of intelligent knowledge services. Focusing on the urgent need for mangrove knowledge acquisition, formal representation, and intelligent services, this paper proposes a research prospect on mangrove knowledge graphs and knowledge services. We first analyze the similarities and differences between various domain-specific concepts of Tupu. On this basis, we define the mangrove knowledge graph as a large-scale knowledge base that integrates multi-disciplinary knowledge and spatio-temporal information with mangrove ecosystems as the core. Then, we propose a research framework for mangrove knowledge services that can realize the transformation from multi-modal data to intelligent knowledge services, including multiple research levels such as ubiquitous data sensing and aggregation, knowledge organization and graph construction, and intelligent mangrove knowledge services. Subsequently, the methods and workflow for constructing mangrove knowledge graphs are introduced. Finally, we discuss the challenges and possible future directions of mangrove knowledge services in the smart era, including the construction of a mangrove knowledge system that integra

关键词：

Metabolites from marine invertebrates and their symbiotic microorganisms: molecular diversity discovery, mining, and application

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

marine Life Science & Technology 2019年第1期1卷 60-94页

作者： Lu Liu Yao-Yao Zheng Chang-Lun Shao Chang-Yun Wang Key laboratory of marine Drugs the Ministry of Education of ChinaSchool of Medicine and PharmacyOcean University of ChinaQingdao 266003China laboratory for marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Single-Cell Center CAS Key Laboratory of Biofuels and Shandong Key Laboratory of Energy GeneticsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Institute of Evolution and marine Biodiversity Ocean University of ChinaQingdao 266003China

Metabolites from marine organisms have proven to be a rich source for the discovery of multiple potent bioactive moleculeswith diverse structures. In recent years, we initiated a program to investigate the diversity of the secondary metabolites frommarine invertebrates and their symbiotic microorganisms collected from the South China Sea. In this review, representativecases are summarized focusing on molecular diversity, mining, and application of natural products from these marineorganisms. To provide a comprehensive introduction to the field of marine natural products, we highlight typical moleculesincluding their structures, chemical synthesis, bioactivities and mechanisms, structure-activity relationships as well as biogenesis. The mining of marine-derived microorganisms to produce novel secondary metabolites is also discussed through theOSMAC strategy and via partial chemical epigenetic modification. A broad prospectus has revealed a plethora of bioactivenatural products with novel structures from marine organisms, especially from soft corals, gorgonians, sponges, and theirsymbiotic fungi and bacteria.

关键词： marine invertebrates Symbiotic microorganisms marine natural products Molecular diversity Bioactivities marine drugs

Correction to:Proteases from the marine bacteria in the genus Pseudoalteromonas:diversity,characteristics,ecological roles,and application potentials

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

marine Life Science & Technology 2020年第4期2卷 456-457页

作者： Xiu-Lan Chen Yan Wang Peng Wang Yu-Zhong Zhang State Key laboratory of Microbial Technology Shandong UniversityQingdao 266237China College of marine Life Sciences Institute for Advanced Ocean StudyOcean University of ChinaQingdao 266003China laboratory for marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266373China

The original article can be found online.

关键词： Proteases Pseudoalteromonas Diversity Characteristics Ecological roles application potentials

application of confocal laser Raman spectroscopy on marine sediment microplastics

维普期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2020年第5期38卷 1502-1516页

作者： LIU Jing ZHANG Xin DU Zengfeng LUAN Zhendong LI Lianfu XI Shichuan WANG Bing CAO Lei YAN Jun Key laboratory of marine Geology and Environment&Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China laboratory for marine Geology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

marine sediment is the primary sink of microplastics and is an indicator of pollution ***,although there are well-developed detection methods,detection is rarely focused on lowmicrometer-sized particles,mainly due to technique *** this study,a simplifi ed process omitting digestion procedures was developed to pretreat microplastics obtained from marine sediment and was coupled with micro-Raman spectroscopy to identify *** on the overall analysis of the characteristic peak assignments,a Raman spectral reference library was constructed for 18 types of *** addition,the eff ects of the measurement parameters were systematically *** research was then conducted to validate the developed process and investigate microplastic contamination in Huiquan Bay,Qingdao,*** simplifi ed process could retain the original appearance of microparticles and accomplish the detection ofmarine *** work demonstrates that Raman spectroscopy is not only an eff ective tool for detecting environmental particles but also highly applicable for identifying particles extracted from marine sediment.

关键词： microplastics confocal Raman spectroscopy marine sediment

Diurnal changes in bacterial communities in oxic surface and hypoxic middle seawater layers of the Changjiang River Estuary

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2021年第4期40卷 92-106页

作者： Yan Huang Lei Yuan Yingping Fan Habib U Rehman Jakhrani Jianxin Wang marine Microorganism Ecological&application laboratory Zhejiang Ocean UniversityZhoushan 316022China

The Changjiang River Estuary(CRE)in the East China Sea suffers from seasonal hypoxia in *** vertical distributions and seasonal changes of microbial communities in the CRE were well ***,little is known about the diurnal changes of bacterial communities in the hypoxic zone of the ***,16 S rRNA gene analysis was used to explore the changes of bacterial communities in the oxic surface and hypoxic middle seawater layers during 24 h in the *** differences between the hypoxic and oxic layers were observed:the phyla Cyanobacteria,Bacteroidetes and Acidimicrobiia were enriched in the oxic layer,whereas the phylum SAR406 and the class Deltaproteobacteria were more abundant in the hypoxic *** addition,some subtle diurnal variations of the bacterial relative abundance were found in both two *** relative abundance of Synechococcus increased at night,and this change was more obvious in the hypoxic *** similar trend was also found in some phototrophic and several heterotrophic bacteria,such as Rhodobacteraceae,OM60 and *** relative abundances peaked at 16:00 in the oxic layer,while the relative abundances peaked at around 7:00 and decreased until 13:00 in the hypoxic ***,the results of the present study suggest that some photosynthetic bacteria and several heterotrophic bacteria have similar diurnal variations implying the light and physicochemical heterogeneity in the course of a day are important for bacterial diurnal changes in the CRE.

关键词： bacterial communities diurnal changes hypoxic zone the Changjiang River Estuary