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MGCPN:An Efficient Deep Learning Model for Tibetan Plateau Precipitation Nowcasting Based on the IMERG Data

Journal of Meteorological Research 2024年第4期38卷 693-707页

作者： Mingyue LU Zhiyu HUANG Manzhu YU Hui LIU Caifen HE Chuanwei JIN Jingke ZHANG Key Laboratory of Meteorological Disaster Ministry of Education(KLME)/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing 210044China Department of Geography Pennsylvania State UniversityUniversity ParkPA 16802USA ZhenhaiDistrict Meteorological Bureau Ningbo315200China Geographic Science College Nanjing University of Information Science&TechnologyNanjing 210044China School of Remote Sensing&Geomatics Engineering Nanjing University of Information Science&TechnologyNanjing 210044China

The sparse and uneven placement of rain gauges across the Tibetan Plateau(TP) impedes the acquisition of precise,high-resolution precipitation measurements,thus challenging the reliability of forecast *** address such a challenge,we introduce a model called Multisource Generative Adversarial Network-Convolutional Long Short-Term Memory(GAN-ConvLSTM) for Precipitation Nowcasting(MGCPN),which utilizes data products from the Integrated Multi-satellite Retrievals for global precipitation measurement(IMERG) data,offering high spatiotemporal resolution precipitation forecasts for upcoming periods ranging from 30 to 300 *** results of our study confirm that the implementation of the MGCPN model successfully addresses the problem of underestimating and blurring precipitation results that often arise with increasing forecast *** issue is a common challenge in precipitation forecasting ***,we have used multisource spatiotemporal datasets with integrated geographic elements for training and prediction to improve model *** model demonstrates its competence in generating precise precipitation nowcasting with IMERG data,offering valuable support for precipitation research and forecasting in the TP *** metrics results obtained from our study further emphasize the notable advantages of the MGCPN model;it outperforms the other considered models in the probability of detection(POD),critical success index,Heidke Skill Score,and mean absolute error,especially showing improvements in POD by approximately 33%,19%,and 8% compared to Convolutional Gated Recurrent Unit(ConvGRU),ConvLSTM,and small Attention-UNet(SmaAt-UNet) models.

关键词： precipitation nowcasting Generative Adversarial Network-Convolutional Long Short-Term Memory(GAN-ConvLSTM)for Precipitation Nowcasting(MGCPN) Integrated Multi-satellite Retrievals for globalprecipitation measurement(IMERG) deep learning Tibetan Plateau

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Effects of Interface on the Dynamic Hysteresis Loss and Static Mechanical Properties of Illite Filled SBR Composites

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Chinese Journal of Polymer science 2022年第11期40卷 1493-1502页

作者： Zhe-Peng Wang Hao Zhang Qiang Liu Shao-Juan Wang Shou-Ke Yan Key Laboratory of Rubber-Plastics Ministry of EducationQingdao University of Science&TechnologyQingdao266042China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China

Despite growing interest in nano-sized fillers,micro-sized fillers with desired compatibility are still used for reinforcing rubbers,owing to their lower production cost and easier processing relative to nano-sized ***,the abundant and eco-friendly clay minerals are recognized as the materials of the twenty-first ***,illite,a naturally occurring clay having dimension in micrometric scale,has been selected as filler to reinforce the *** improve the compatibility of illite with SBR,the illite was modified by either bis[3-(triethoxysilyl)propyl]tetrasulfide(Si69-illite)or 3-mercaptopropyltriethoxysilane(KH580-illite).The interfacial interactions of SBR composites filled with pristine illite(illite/SBR)and Si69-illite(Si69-illite/SBR),or KH580-illite(KH580-illite/SBR)were characterized by bound rubber content and Payne effect measurements,while dynamic hysteresis losses of these uncured and cured composites were also analyzed under various strain *** was found that the filler-rubber interactions were greatly improved for Si69-illite/SBR and KH580-illite/SBR systems compared to the illite/SBR *** leads to an increment of modulus at 300%strain of the composites from 3.46 MPa for illite/SBR to 7.70 MPa for Si69-illite/SBR and12.96 MPa for KH580-illite/***,lower rolling resistance and better wear resistance without compromising wet traction of Si69-illite/SBR and KH580-illite/SBR have been *** demonstrates the high possibility of Si69 and KH580 modified illites as promising alternative fillers for reinforcing rubbers.

关键词： Illite SBR Composite Dynamic hysteresis loss Static mechanical properties

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Emerging design principles,materials,and applications for moisture-enabled electric generation

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escience 2022年第1期2卷 32-46页

作者： Zhaoyang Sun Xian Wen Liming Wang Dongxiao Ji Xiaohong Qin Jianyong Yu Seeram Ramakrishna Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai201620China Department of Mechanical Engineering National University of Singapore117574Singapore Innovation Center for Textile Science and Technology Donghua UniversityShanghai201620China

Smart generators that collect energy from the ambient environment are a new approach for meeting growing global energy *** is one of the most abundant resources in the ambient environment,and using it to generate electricity has aroused great interest in recent *** this review,we first summarize the emerging design principles of moisture power generation,including ion diffusion,streaming potential,and charged surface ***,based on these fundamental principles,we systematically summarize the materials thus far known to be suitable for moisture power ***,we highlight the application of moisture energy generators in various fields,such as thermoelectricity,solar thermal evaporation,capacitors,strain sensors,and information storage,and discuss current challenges and future prospects for the development of moisture energy generators.

关键词： Energy conversion Moisture-enabled electric generator Ion diffusion Streaming potential Smart generator

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Integrated host configuration of flexibly fibrous skeleton towards efficient polysulfide conversion and dendrite-free behavior in stable lithium-sulfur pouch cells

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Journal of Energy Chemistry 2023年第8期83卷 43-52,I0003页

作者： Tongtao Wan Yusen He Zongke He Wenjia Han Yongguang Zhang Guihua Liu Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China Key Laboratory of Pulp and Paper Science&Technology of Ministry of Education Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353ShandongChina School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China

The commercialization of lithium-sulfur(Li-S) batteries is obstructed by the sluggish sulfur electrochemical reaction,severe polysulfide shuttling effect,and damaging dendritic lithium ***,a threedimensional(3D) conductive carbon nanofibers skeleton-based bifunctional electrode host material is fabricated,which consists of a two-dimensional(2D) ultra-thin NiSe_(2)-CoSe_(2)heterostructured nanosheet built on one-dimensional(1D) carbon nanofibers(NiSe_(2)-CoSe_(2)@CNF).When serving as cathodic host,the heterostructured NiSe_(2)-CoSe_(2)@CNF offers a synergistic function of polysulfide confinement and catalysis *** S/NiSe_(2)-CoSe_(2)@CNF cathode shows outstanding cycling stability of 0.03% capacity decay rate per cycle over 500 cycles at 1 *** anodic host,the NiSe_(2)-CoSe_(2)@CNF with high-flux Li+diffusion property and good lithiophilic capability realizes dendrite-free Li plating/stripping *** from these synergistically merits,the Li-S full cell with S/NiSe_(2)-CoSe_(2)@CNFILi/NiSe_(2)-CoSe_(2)@CNF electrodes exhibits excellent electrochemical performance including a high specific capacity of1021 mA h g^(-1)over 100 cycles at 0.2 C and reversible areal capacity of 3.05 mA h cm^(-2)under a high sulfur loading of 4.33 mg cm^(-2)at 0.1 *** pouch cell also delivers ultra-stable Li/S *** study demonstrates a rational and universal electrode construction strategy for developing practical and high-energy Li-S batteries.

关键词： Polysulfides shuttling Lithiumdendrites Catalyticconversion NiSe_(2)-CoSe_(2)heterostructure Pouchcell

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Changes in the Boreal Summer Intraseasonal Oscillation under Global Warming in CMIP6 Models

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Advances in Atmospheric sciences 2024年第10期41卷 1984-1998页

作者： Zhefan GAO Chaoxia YUAN Key Laboratory of Meteorological Disaster of Ministry of Education Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersInstitute for Climate and Application Research(ICAR)Nanjing University of Information Science&TechnologyNanjing 210044China Application Laboratory Japan Agency of Marine-Earth Science and TechnologyYokohama 231-0017Japan

Changes in the activities of the Boreal Summer Intraseasonal Oscillation(BSISO)at the end of 21st century under the SSP5-8.5 scenario are assessed by adopting 17 CMIP6 models and the weak-temperature-gradient *** show that the intraseasonal variations become more *** BSISO-related precipitation anomaly shows a larger zonal scale and propagates further ***,there is no broad agreement among models on the changes in the eastward and northward propagation speeds and the frequency of individual *** the western North Pacific(WNP),the BSISO precipitation variance is significantly increased,at 4.62%K^(−1),due to the significantly increased efficiency of vertical moisture transport per unit of BSISO apparent *** vertical velocity variance is significantly decreased,at−3.51%K^(−1),in the middle troposphere,due to the significantly increased mean-state static *** in the lower-level zonal wind variance are relatively complex,with a significant increase stretching from the northwestern to southeastern WNP,but the opposite in other *** is probably due to the combined impacts of the northeastward shift of the BSISO signals and the reduced BSISO vertical velocity variance under global *** in strong and normal BSISO events in the WNP are also *** show same-signed changes in precipitation and large-scale circulation anomalies but opposite changes in the vertical velocity *** is probably because the precipitation anomaly of strong(normal)events changes at a rate much larger(smaller)than that of the meanstate static stability,causing enhanced(reduced)vertical motion.

关键词： Boreal Summer Intraseasonal Oscillation global warming CMIP6 weak-temperature-gradient assumption

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Asymmetric reduction of conjugated C=C bonds by immobilized fusion of old yellow enzyme and glucose dehydrogenase

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Green Synthesis and Catalysis 2024年第2期5卷 80-87页

作者： Yongxing Li Pengqian Luan Lele Dong Jianqiao Liu Luying Jiang Jing Bai Fufeng Liu Yanjun Jiang School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300130China College of Food Science and Biology Hebei University of Science&Technology26 Yuxiang StreetYuhua DistrictShijiazhuang 050018China Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education Tianjin Key Laboratory of Industrial MicrobiologyCollege of BiotechnologyTianjin University of Science&TechnologyTianjin 300457China

Asymmetric reduction of the conjugated C=C bonds by the old yellow enzymes(OYEs)presents a promising field in the synthesis of chiral ***,few natural OYEs have been applied in large-scale applications due to the requirement of costly NADPH and low operational ***,a stable and efficient fusion of YqjM from Bacillus subtilis and glucose dehydrogenase(GDH)from Bacillus megaterium was constructed to stereoselectively reduce the conjugated C=C bonds in a self-sufficient continuous *** effects of the enzyme order and different linkers on the fusions were investigated by structural analysis and all-atom molecular dynamics *** best fusion YqjM_G_GDH gave 98% conversion of 100 mmol/L 2-methylcyclopentenone with an excellent ee value(>99%)in 3 h,while the mixture of individual enzymes only obtained 68% conversion after more than 8 *** improved substrate conversion of YqjM_G_GDH fusion was probably attributed to the increased flexibility of each fused enzyme and the shortening of the diffusion distance of NADPH regenerated.A one-pot process was designed to purify and immobilize the fusion on the Ni2t-nitrilotriacetic acid functionalized magnetic mesoporous silica *** resulting immobilized biocatalyst not only catalyzed the asymmetric reduction of various α,β-unsaturated ketones(20 mmol/L)continuously with only 50μmol/L NADPt to initiate the whole process,but also retained more than 82%of the initial activity after seven cycles,serving as a good candidate for the industrial applications.

关键词： Enzyme fusion Old yellowenzymes Asymmetricreduction C=C bond Cofactor regeneration Immobilization

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High performance soft fiber-reinforced sodium alginate/polyacrylamide double-network hydrogels

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Progress in Natural science:Materials International 2024年第6期34卷 1267-1273页

作者： Xiaodan Wang Dan Xie Wenwen Hou Lilong Gao Yanzhi Xia Kunyan Sui College of Materials Science and Engineering State Key Laboratory of Bio-Fiber and Eco-textiles Collaborative Innovation Center for Marine Biobased Fibers and Ecological Textile Technology Institute of Marine Biobased Materials Qingdao University

Strong and stretchable hydrogels are in great demand but challenging due to the trade-off between the strength and stretchability. Here, we successfully prepared highly strong and stretchable sodium alginate/polyacrylamide（SA/PAM） double network（DN） hydrogels by using swollen calcium alginate fiber（CAF） as the first energy dissipating network. The swollen fibers contributed two functions: the homogeneous SA ionic crosslinkedpolymer networks and the soft fiber reinforcement. In contrast to the stiff fiber, the soft CAF provide more effective energy dissipation transferring from soft fiber to the liquid hydrogel. The as-prepared hydrogels demonstrated a high tensile strength（0.83 MPa）, high stretchability（4230 %）, and high toughness（15.7 MJ/m3）,as 5, 3 and 14 times of the SA/PAM hydrogels. This soft fiber-reinforced strategy offers a new way for preparing high-performance hydrogels, broadening their applications areas.

关键词： Highly stretchable hydrogels Soft sodium alginate fiber Double networks hydrogels

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Copper Ions Removal from Wastewater by Electrocoagulation Using Cement-based Cathode Plates

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Journal of Wuhan University of technology(Materials science) 2023年第2期38卷 387-393页

作者： YOU Song WU Jing WANG Shizhe WANG Wei LI Qiong ZAHNG Ganggang DING Qinjun WANG Luoxin College of Materials Science and Engineering State Key Laboratory of New Textile Materials&Advanced Processing TechnologyWuhan Textile UniversityWuhan430200China Department of Logistics Support Wuhan University of TechnologyWuhan430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China

The present work uses PEO solution to well disperse carbon fiber and identifies percolation thresholds of carbon fiber and carbon black which are used as conductive *** resultant cathode plates have an average compressive strength of 27.3 MPa and flexural strength of 29.09 MPa,which demonstrate excellent mechanical *** Cu^(2+)removal efficiency was measured at different current densities in EC process with cement-based cathode plate,while the voltage changes were *** results showed that the cement-based cathode plate operated stably and achieved 99.7%removal of 1 L of simulated wastewater with a Cu^(2+)concentration of 200 ppm at a current density of 8 m A/cm^(2)for 1 *** of floc and tested cathode plates,SEM and EDS analyses,and repeatability testing of the tested plates demonstrate the reusability of the plates,proving that cement-based plates can effectively replace metal cathode plates,reduce the cost of EC and improve the applicability of EC devices.

关键词： electrocoagulation cathode plate cement-based conductive materials copper ions repeatability

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Engineering Multiscale Heterostructure as Ionic Diode and Light-Driven Ion Pump for Osmotic-Solar Energy Harvesting

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CCS Chemistry 2025年第5期7卷 1383-1395页

作者： Xinyue Zhang Baohu Wu Huiqing Wu Peiyi Wu Key Laboratory of Science&Technology of Eco-Textile Ministry of EducationCollege of Chemistry and Chemical EngineeringDonghua UniversityShanghai 201620 National Innovation Center of Advanced Dyeing and Finishing Technology Tai’anShandong 271000 Jülich Centre for Neutron Science(JCNS) Heinz Maier-Leibnitz Zentrum(MLZ)Forschungszentrum Jülich85748 Garching

As blue energy,osmotic power holds tremendous potential for electricity generation via membranebased reverse ***,current processes suffer from low energy output mainly due to inadequate transmembrane ion transport and a polarization *** by plant growth and photosynthesis,we proposed a robust heterogeneous membrane that enabled ionic-diode rectified and light-enhanced ion transport for efficient osmotic-solar energy *** membrane was rationally constructed by in-situ growth of polyaniline(PANI)onto a sulfonated matrix,creating a multiscale heterostructure that enabled the coexistence of a Janus-like architecture and semiconductor *** from multi-asymmetries of geometry,charge,and chemistry,the membrane delivered a high unidirectional ion flow and suppressed polarization,generating an exceptional osmotic power density of up to 12.6Wm^(−2)at a 50-fold salinity ***-driven ion pumping was achieved by the synergistic photothermal and photoelectric effect of PANI *** light irradiation,temperature gradient and transmembrane potential were triggered simultaneously,accelerating ion movement,thereby elevating the energy conversion *** work pioneers the development of highperformance power generators capable of harnessing energy from diverse salty sources coupled with a solar resource.

关键词： heterostructure salinity gradient ionic diode light-driven osmotic power solar energy

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MOF-derived ZrO_(2)/C-polyvinylidene fluoride composite towards negative permittivity regulation mechanism

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Journal of Materials science & technology 2024年第12期179卷 50-56页

作者： X.T.Song G.H.Fan Y.Liu R.H.Fan Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Jinan 250061China Institute of Advanced Electrical Materials Qingdao University of Science&TechnologyQingdao 266042China College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai 201306China

Composites featuring negative permittivity have garnered significant attention for their potential in novel capacitance designs,coil-less electrical inductors,and electromagnetic shielding *** this study,we prepared polyvinylidene fluoride(PVDF)matrix composites filled with ZrO_(2)/C nanoparticles de-rived from metal-organic frameworks(MOFs)via a hot-pressing *** an increase in the ZrO_(2)/C content to 30 wt.%,electrical percolation was observed,accompanied by a transition mechanism from hopping conduction to metal-like *** enabled the realization of ZrO_(2)/C/PVDF composites with tailorable negative permittivity properties,attributed to the plasmonic oscillation of free electrons in the composites beyond the percolation threshold(30 wt.%).Furthermore,the permittivity transition along to a shift in the electrical behavior of the percolative composites from capacitive to *** explored the regulatory mechanism behind the negative permittivity in this random composite system,and our findings highlight the potential of these tunable negative permittivity media as promising candi-dates for diverse electromagnetic applications.

关键词： Negative permittivity Electrical properties Plasma oscillation Polymeric composites

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