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Interpretable Machine Learning-Based Spring Algal Bloom Forecast Model for the Coastal Waters of Zhejiang

Journal of Ocean University of China 2025年第1期24卷 1-12页

作者： HUANG Guoqiang BAO Min ZHANG Zhao GU dongming LIANG Liansong TAO Bangyi state Key Laboratory of Satellite Ocean Environment dynamics Second Institute of OceanographyMinistry of Natural ResourceHangzhou 310012China Wenzhou marine Center Ministry of Natural ResourcesWenzhou 325000China Observation and research Station of Yangtze river delta marine Ecosystems Ministry of Natural ResourcesZhoushan 316000China Key Laboratory of marine Ecological Monitoring and restoration Technologies Ministry of Natural ResourceShanghai 201206China

The 2016–2022 monitoring data from three ecological buoys in the Wenzhou coastal region of Zhejiang Province and the dataset European Centre for Medium-range Weather Forecasts were examined to clarify the elaborate relationship between variations in ecological parameters during spring algal bloom incidents and the associated changes in temperature and wind fields in this study.A long short-term memory recurrent neural network was employed,and a predictive model for spring algal bloom in this region was *** model integrated various inputs,including temperature,wind speed,and other pertinent variables,and chlorophyll concentration served as the primary output *** model training used chlorophyll concentration data,which were supplemented by reanalysis and forecast temperature and wind field *** model demonstrated proficiency in forecasting next-day chlorophyll concentrations and assessing the likelihood of spring algal bloom occurrences using a defined chlorophyll concentration *** historical validation from 2016 to 2019 corroborated the model's accuracy with an 81.71%probability of correct prediction,which was further proven by its precise prediction of two spring algal bloom incidents in late April 2023 and early May *** interpretable machine learning-based model for spring algal bloom prediction,displaying effective forecasting with limited data,was established through the detailed analysis of the spring algal bloom mechanism and the careful selection of input *** insights gained from this study offer valuable contributions to the development of early warning systems for spring algal bloom in the Wenzhou coastal area of Zhejiang Province.

关键词： spring algal bloom forecast LSTM interpretable

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Efficient conversion of chitin to HMF under the cocatalytic system of formic acid and silicotungstic acid

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Journal of Oceanology and Limnology 2025年第1期43卷 261-273页

作者： Luxiao ZHOU Kun GAO Peng HE Huahua YU ronge XING Song LIU Yukun QIN College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042China CAS and Shandong Province Key Laboratory of Experimental marine Biology Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for marine drugs and Bioproducts Qingdao Marine Science and Technology CenterQingdao 266237China

The conversion process of chitin,one of the abundant biomass resources on the earth,not only follows the principles of green chemistry,but also has significant value in industrial ***,it is a great challenge to directly convert insoluble and rigid structured chitin to 5-hydroxymethylfurfural(HMF).To address this issue,we developed a green conversion process combining pretreatment and catalytic *** was first pretreated by hexafluoro isopropanol(HFIP),which somewhat disrupted the hydrogen bonding network within the chitin ***,formic acid(FA)and silicotungstic acid(STA)synergistically catalyzed the conversion to HMF in a biphasic system of 2-methyltetrahydrofuran(2-Me-THF)/H2O,and high yields(40.2%)HMF was obtained under the optimism *** product distribution was analyzed by HPLC-MS and the co-catalysis of FA with STA was evidenced.A dual-function catalytic system with both Lewis and Br?nsted acids was created,the catalytic system that significantly improved the efficiency of complex tandem catalytic reactions with *** on the experimental results,a possible pathway for chitin conversion was deduced,providing a new catalytic idea for the efficient conversion of chitin to HMF.

关键词： chitin 5-hydroxymethylfurfural 2-Me-THF/H2O biphasic system Lewis and Br?nsted acid

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Platinum modification of metallic cobalt defect sites for efficient electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第2期101卷 463-473页

作者： Haoyu Zhan Baixue Cheng Yankun Lu danning Xing Xingshuai Lv Huining Huang Thomas Frauenheim Tao Wang Peng Zhou state Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and Engineering Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials Qingdao University Shandong institute of Advanced Technology College of Chemistry and Chemical Engineering Ocean University of China Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials & Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology School of Science Constructor University Beijing Computational Science research Center College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Co3O4possesses both direct and indirect oxidation effects and is considered as a promising catalyst for the oxidation of 5-hydroxymethylfurfural（HMF）.However,the enrichment and activation effects of Co3O4on OH-and HMF are weak,which limits its further *** defect engineering can regulate the electronic structure,optimize the adsorption of intermediates,and improve the catalytic activity by breaking the symmetry of the material,which is rarely involved in the upgrading of *** this work,we prepare Co3O4with metal defects and load the precious metal platinum at the defect sites（PtVco）.The results of in-situ characterizatio ns,electrochemical measurements,and theoretical calculations indicate that the reduction of Co-Co coordination number and the formation of Pt-Co bond induce the decrease of electron filling in the antibonding orbitals of Co *** resulting upward shift of the d-band center of Co combined with the characteristic adsorption of Pt species synergically enhances the enrichment and activation of organic molecules and OH species,thus exhibiting excellent HMF oxidation activity(including a lower onset potential（1.14 V） and 19 times higher current density than pure Co3O4at 1.35 V).In summary,this work explores the adsorption enhancement mechanism of metal defect sites modified by precious metal in detail,provides a new option for improving the HMF oxidation activity of cobalt-based materials,broadens the application field of metal defect based materials,and gives an innovative guidance for the functional utilization of metal defect sites in biomass conversion.

关键词： Adsorption enhancement Biomass upgrading Coordination environment Electrocatalysis Metallic defect

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar razanau Juanxiu Xiao Wei Xiao di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina state Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of BelarusMinsk 220072Belarus state Key Laboratory of marine resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologySchool of Marine Science and EngineeringHainan UniversityHaikou 570228HainanChina department of Chemical and Environmental Engineering University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina

Methane, an abundant one-carbon(C_(1)) resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO_(2)emissions and coke deposition. Electrochemical conversion of methane(ECM) using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO_(2)emission.

关键词： Methane Electrochemical conversion reaction mechanism Catalyst design Electrode Electrocatalysis

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Genome of tropical bed bug Cimex hemipterus(Cimicidae,Hemiptera)reveals tetraspanin expanded in bed bug ancestor

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Insect Science 2025年第1期32卷 42-54页

作者： Sean Tsz Sum Law Wenyan Nong Chade Li Tze Kiu Chong Ho Yin Yip Thomas Swale Siu Wai Chiu roger Yat-Nork Chung Hon-Ming Lam Samuel Y.S.Wong Hung Wong Jerome H.L.Hui School of Life Sciences Simon F.S.Li Marine Science LaboratoryState Key Laboratory of AgrobiotechnologyInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina dovetail Genomics The United States of America School of Life Sciences The Chinese University of Hong KongHong KongChina School of Public Health and Primary Care CUHK Institute of Health EquityThe Chinese University of Hong KongHong KongChina School of Life Sciences State Key Laboratory of AgrobiotechnologyInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina department of Social Work CUHK Institute of Health EquityInstitute of EnvironmentEnergy and SustainabilityThe Chinese University of Hong KongHong KongChina

Cimex species are ectoparasites that exclusively feed on warm-blooded animals such as birds and *** cimicid species are known to be persistent pests for humans,including the tropical bed bug Cimex hemipterus,common bed bug Cimex lectularius,and Eastern bat bug Leptocimex *** date,genomic information is restricted to the common bed bug ***,which limits understanding their biology and to provide controls of bed bug ***,a chromosomal-level genome assembly of ***(495 Mb[megabase pairs])contained on 16 pseudochromosomes(scaffold N50=34 Mb),together with 9 messenger rNA and small rNA transcriptomes were *** comparison between hemipteran genomes,we found that the tetraspanin superfamily was expanded in the Cimex *** study provides the first genome assembly for the tropical bed bug ***,and offers an unprecedented opportunity to address questions relating to bed bug infestations,as well as genomic evolution to hemipterans more widely.

关键词： bedbug genome microrNA sesquiterpenoid tetraspanin

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Complex BSrs and differential gas hydrate accumulations in the northern South China Sea

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Journal of Earth Science 2025年

作者： Xiujuan Wang Jiapeng Jin Lixia Li Jinzi Hu Sanzhong Li Wenlu Wang Pibo Su Shengxiong Yang state Key Laboratory of Natural Gas Hydrate(Beijing) Frontiers Science Center for deep Ocean Multispheres and Earth System， Key Lab of Submarine Geosciences and Prospecting Techniques， MOE and College of marine Geosciences， Ocean University of China Laboratory for marine Mineral resources，Laoshan Laboratory CNOOC research institute Co.， Ltd. Sanya institute of South China Sea Geology， Academy of South China Sea Geological Science，China Geological Survey Southern marine Science and Engineering Guangdong Laboratory(Guangzhou)

different types of bottom simulating reflectors (BSrs)， along complex morphologies of gas hydrates， have been revealed in the northern South China Sea. They occur in different tectonic-sedimentary settings. Fracture-filling and pore-filling gas hydrates are widely discovered above different types of BSrs by drillings and indicated by chimney-like or high amplitude reflections on seismic profiles. The existence of structure II gas hydrates， the coexistence of gas hydrates and free gas， the recently active gas hydrate systems， and the extensive distributed shallow gas are all due to the supply of thermogenic gas and relatively high flux of fluid migration. The pathways， such as faults， fractures， thrust faults， diapir and gas chimneys， which are formed by magmatism， intrusive structures， overpressure， or compressional tectonic forces， play important roles in vertical fluid migrations， particularly in areas where multi-stages mass transport deposits distributed. The differences in the tectonic-sedimentary settings are suggested to account for the shifts of the BSrs in the northern South China Sea. The tectonic activities control the development of fluid migration pathways， and the reservoir plays a crucial role in the accumulation of various types of gas hydrate. A comprehensive understanding of these differences in gas hydrate occurrences and their key geological controls can contribute to the exploration for gas hydrates in the future.

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Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination

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Journal of Energy Chemistry 2025年第1期100卷 171-179页

作者： Jiacheng Wang Zhaoyu Chen ruduan Yuan Jiaxin Luo Ben Zhang Keju Ji Meng Li Juanxiu Xiao Kuan Sun National Innovation Center for Industry-Education Integration of Energy Storage Technology MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCollege of Energy&Power EngineeringChongqing UniversityChongqing 400044China Xuefeng Mountain Energy Equipment Safety National Observation and research Station CQU-NUS Renewable Energy Materials&Devices Joint LaboratoryChongqing UniversityChongqing 400044China Southwest Technology and Engineering research institute Chongqing 400039China Jiangsu Provincial Key Laboratory of Bionic Functional Materials College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina state Key Laboratory of marine resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologySchool of Marine Science and EngineeringHainan UniversityHaikou 570228HainanChina

Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater ***,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires *** this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive *** utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m^(-2)h^(-1)for condensate water yield under one-sun ***,the device exhibited a salt adsorption capacity of up to48 mg g^(-1)and a salt adsorption rate of 2.1 mg g^(-1)*** addition,the salt adsorption capacity increased by approximately 32%under one-sun ***,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical *** calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive ***,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid *** work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies.

关键词： Capacitive deionization Solar vapor generation Molybdenum disulfide defect engineering

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Preparation and performance of highly-conductive dual-doped Li_(7)La_(3)Zr_(2)O_(12)solid electrolytes for thermal batteries

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Green Energy & Environment 2025年第2期10卷 399-409页

作者： Wei Li Shu Zhang Xinya Bu Jing Luo Yi Zhang Mengyu Yan Ting Quan Yanli Zhu state Key Laboratory of Explosion Science and Safety Protection Beijing Institute of TechnologyBeijing100081China Xi'an North Qinghua Electromechanical Co. Ltd.Xi'an710025China Beijing institute of Technology Chongqing Innovation Center Chongqing401120China

Garnet Li_(7)La_(3)Zr_(2)O_(12)(LLZO)electrolytes have been recognized as a promising candidate to replace liquid/molten-state electrolytes in battery applications due to their exceptional performance,particularly Ga-doped LLZO(LLZGO),which exhibits high ionic ***,the limited size of the Liþtransport bottleneck restricts its high-current discharging *** present study focuses on the synthesis of Ga^(3+)þand Ba^(2+)þco-doped LLZO(LLZGBO)and investigates the influence of doping contents on the morphology,crystal structure,Liþtransport bottleneck size,and ionic *** particular,Ga_(0.32)Ba_(0.15)exhibits the highest ionic conductivity(6.11E-2 S cm^(-1) at 550 C)in comparison with other compositions,which can be attributed to its higher-energy morphology,larger bottleneck and unique Liþtransport *** addition to Ba^(2+),Sr^(2+)þand Ca^(2+)have been co-doped with Ga3þinto LLZO,respectively,to study the effect of doping ion radius on crystal structures and the properties of *** characterization results demonstrate that the easier Liþtransport and higher ionic conductivity can be obtained when the electrolyte is doped with larger-radius *** a result,the assembled thermal battery with Ga_(0.32)Ba_(0.15)-LLZO electrolyte exhibits a remarkable voltage platform of 1.81 V and a high specific capacity of 455.65 mA h g^(-1) at an elevated temperature of 525℃.The discharge specific capacity of the thermal cell at 500 mA amounts to 63%of that at 100 mA,showcasing exceptional high-current discharging *** assembled as prototypes with fourteen single cells connected in series,the thermal batteries deliver an activation time of 38 ms and a discharge time of 32 s with the current density of 100 mA cm^(-2).These findings suggest that Ga,Ba co-doped LLZO solid-state electrolytes with high ionic conductivities holds great potential for high-capacity,quick-initiating and high-current discharging thermal batteries.

关键词： Element doping Thermal battery Solid electrolyte LLZO Ionic conductivity

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Adsorption and retention of fracturing fluid and its impact on gas transport in tight sandstone with different clay minerals

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Petroleum Science 2025年第1期22卷 370-383页

作者： Yi-Jun Wang Li-Jun You Jian Yang Yi-Li Kang Ming-Jun Chen Jia-Jia Bai Jian Tian state Key Laboratory of Oil and Gas reservoir Geology and Exploitation Southwest Petroleum University Engineering Technology research institute of Southwest Oil & Gas Field Company PetroChina School of Petroleum Engineering Changzhou University state Key Laboratory of Coal Mine disaster dynamics and Control Chongqing University

To elucidate the adsorption characteristics and retention mechanisms of fracturing fluids in diverse clay minerals, we conducted on-line nuclear magnetic resonance(NMr) and atomic force microscopy(AFM)experiments. The depth and extent of solid phase damage are determined by the ratio between the size of fine fractions in fracturing fluid residue and the pore-throat size in experiments. Poor physical properties(K d) result in a more preferential flow pathway effect during flowback, and the stepwise incremental pressure differential proves to be more effective for the discharge of fracturing fluid in submicron pore throats. The permeability is significantly influenced by the differential distribution of retained fracturing fluid, as supported by direct experimental evidence. The presence of good physical properties(K > 0.5 m d) combined with a scattered distribution of retained fracturing fluid is associated with high gas phase recovery permeability, whereas a continuous sheet-like distribution results in low recovery permeability. The expansive surface area and presence of filamentous illite minerals facilitate the multiple winding and adsorption of fracturing fluids, demonstrating strong hydrogen-bonding, multi-layering and multiple adsorption properties. The geological characteristics of the main gas formations exhibit significant variation, and the severity of damage caused by fracturing fluids occurs in diverse sequences. To address this issue, a differentiated strategy for optimizing fracturing fluids has been proposed.

关键词： Clay minerals Formation damage Fracturing fluid retention distribution Adsorption morphology

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marine dispersion of Fukushima-derived radiocesium in the North Pacific and its implications

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Science China Earth Sciences 2025年第2期68卷 389-406页

作者： Tong ZHANG Xiaolin HOU Yukun FAN state Key Laboratory of Loess and Quaternary Geology Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and ApplicationXi’an AMS CenterInstitute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China University of Chinese Academy of Sciences Beijing 100049China Xi’an institute for Innovative Earth Environment research Xi’an 710061China

A key scientific approach to addressing the environmental radiation risks from Fukushima nuclear contaminated water(FNCW) discharge into the ocean is understanding and predicting the marine dispersion of *** dispersion of radiocesium(CsF:134Cs,137Cs) from the Fukushima nuclear accident in the North Pacific and its marginal seas post-2011 was systematically summarized,focusing on pathways,vertical distribution changes,and transit *** research examined CsFdispersion through the Kuroshio Extension and denser central mode water(d-CMW) to the eastern North Pacific,as well as through subtropical mode water(STMW),lighter central mode water(L-CMW),and d-CMW to the subtropical western North Pacific,China Seas,and Sea of *** considered broader implications of CsFdispersion in light of ongoing FNCW *** this prolonged liquid discharge and Kuroshio Extension’s barrier effect,it is crucial to emphasize the role of CMW besides STMW in transporting FNCW to the subtropical western North Pacific and its marginal *** research should focus on the key mechanism and longitude range of CMW crossing the Kuroshio *** short-lived134Cs decays rapidly during the storage and dispersion of FNCW,long-lived135Cs and135Cs/137Cs ratios can serve as valuable tracers for detecting and quantifying ***,there is an urgent need for high-precision analysis of these key radionuclides and their characteristic *** promptly detect,assess,and respond to FNCW intrusion,continuous monitoring and identification of nuclear pollution sources in key ocean currents and straits are ***,interdisciplinary research integrating monitoring with marginal sea circulation dynamics and high-resolution numerical simulations should be a priority.

关键词： Fukushima nuclear accident Fukushima nuclear contaminated water marine dispersion Mode water Kuroshio Extension

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