结合武汉市江岸区新直街社区规划实践,探索人工智能生成内容技术的文本生成和图像生成等模型在社区规划前、中期工作环节中的具体运用方法,并考察其对于效率创意和公平正义的促进情况。在“语言交流”环节,采用“Qwen+Ollama Web UI+本...结合武汉市江岸区新直街社区规划实践,探索人工智能生成内容技术的文本生成和图像生成等模型在社区规划前、中期工作环节中的具体运用方法,并考察其对于效率创意和公平正义的促进情况。在“语言交流”环节,采用“Qwen+Ollama Web UI+本地专属知识库”的文本生成模型及运行框架,辅助规划设计师回复居民对话、提炼议题观点和实时分析语言情感倾向,促进规划共识达成。在“语言—方案转译”环节,基于“Stable Diffusion—Comfy UI”的图像生成模型及运行界面构建“激发设计灵感”和“优化底图照片”两个工作流,前者将规划共识转化为AI模型理解的提示词语言和相应的空间化参考方案,为设计者提供灵感创意,实现文本生成与图像生成两类模型之间的耦合;后者清理现状照片中前景遮挡要素以形成设计底图。在“方案设计”环节,根据不同居民的设计习惯,搭建“涂抹蒙版改绘”和“涂鸦线条改绘”两类基于现状照片的局部改绘工作流,快速生成具象草图方案。人工智能生成内容技术为社区规划的公众参与工作提供了全新思路和方案,同时该技术的运用需要突破传统的工具主义观念,不断致力于“技术赋权”而非“技术减权”。展开更多
With the rapid development of generative artificial intelligence(GenAI),the task of story visualization,which transforms natural language narratives into coherent and consistent image sequences,has attracted growing r...With the rapid development of generative artificial intelligence(GenAI),the task of story visualization,which transforms natural language narratives into coherent and consistent image sequences,has attracted growing research attention.However,existing methods still face limitations in balancing multi-frame character consistency and generation efficiency,which restricts their feasibility for large-scale practical applications.To address this issue,this study proposes a modular cloud-based distributed system built on Stable Diffusion.By separating the character generation and story generation processes,and integratingmulti-feature control techniques,a cachingmechanism,and an asynchronous task queue architecture,the system enhances generation efficiency and scalability.The experimental design includes both automated and human evaluations of character consistency,performance testing,and multinode simulation.The results show that the proposed system outperforms the baseline model StoryGen in both CLIP-I and human evaluation metrics.In terms of performance,under the experimental environment of this study,dual-node deployment reduces average waiting time by approximately 19%,while the four-node simulation further reduces it by up to 65%.Overall,this study demonstrates the advantages of cloud-distributed GenAI in maintaining character consistency and reducing generation latency,highlighting its potential value inmulti-user collaborative story visualization applications.展开更多
Forests are experiencing more frequent and intense wildfires in Canada,which pose considerable threats to water quantity and quality,particularly during the summer low-flow period when water demand is high.While the i...Forests are experiencing more frequent and intense wildfires in Canada,which pose considerable threats to water quantity and quality,particularly during the summer low-flow period when water demand is high.While the impacts of wildfire on hydrology have been widely assessed at the watershed scale,the underlying mechanisms of the responses of summer low flows remain poorly understood.In this study,we employed an integrated research framework that combines hydrometric monitoring with geochemical tracing to evaluate how the 2021 White Rock Lake Wildfire affected summer low flows,and to identify the underlying mechanisms governing these responses in the Okanagan Valley,British Columbia(BC),Canada.We found that(1)summer low flows,represented by Q90(flows exceeded at 90%of the time in summer)significantly increased following the wildfire(p<0.05);(2)summer low flows were primarily regulated by snow water in early summer(July),while dominated by groundwater in late summer(August and September);and(3)enhanced snow water contribution and reduced evapotranspiration(ET)were two primary contributors to the increased summer low flows.Our results provide insights for developing sustainable water management strategies for the region in the context of climate change and increasing forest disturbance.This study also demonstrates that the combination of hydrometric monitoring and geochemical tracing is an effective approach towards uncovering mechanisms that drive low-flow responses.展开更多
Water use adaptive strategies for plants on tropical islands are far less clear than those in continental environments,largely because plants in tropical ecosystems are normally exposed to abundant solar energy.Thus,c...Water use adaptive strategies for plants on tropical islands are far less clear than those in continental environments,largely because plants in tropical ecosystems are normally exposed to abundant solar energy.Thus,clarifying the characteristics of water conservation and uptake patterns by plants is critical for understanding the plant water adaptation in tropical ecosystems.To address this issue,we investigated the water retention capacity of litter from the dominant tree species(Casuarina equisetifolia)on a tropical island.Theδ^(2)H andδ^(18)O of the xylem water and soil water under the tree canopy,as well as theδ^(13)C in the needle-like twigs,were measured to explore the water use characteristics.Our findings revealed that the maximum water retention capacity of the litter ranged from 164.14 to 175.21 t/ha,indicating that the Casuarina litter is capable of soil water conservation,thus increasing soil water availability for plants.The major water uptake sources for the Casuarina trees tended to consist of water from shallow soil layers(10-20 cm)at peripheral canopy zones and revealing pronounced spatial heterogeneity.Moreover,compared with those in a continental coastal region,the water use efficiency of Casuarina trees on a tropical island was greater.Our results suggest that the ecological strategies used by Casuarina trees for soil water conservation and water use patterns on tropical island are diverse.Therefore,these findings provide insights into the biophysical effects of vegetation on soil water availability as well as the physiological acclimation strategies adopted by plants in tropical island ecosystems.展开更多
The Arno River Basin(Central Italy)is affected by a considerable anthropogenic pressure due to the presence of large cities and widespread industrial and agricultural practices.In this work,26 water samples from the A...The Arno River Basin(Central Italy)is affected by a considerable anthropogenic pressure due to the presence of large cities and widespread industrial and agricultural practices.In this work,26 water samples from the Arno River and its main tributaries were analyzed to assess the water pollution status.The geochemical composition of the Arno River changes from the source(dominated by a Ca-HCO_(3) facies)to the mouth(where a Na-Cl(SO4)chemistry prevails)with an increasing quality deterioration,as suggested by the Chemical Water Quality Index,due to anthropogenic contributions and seawater intrusion before flowing into the Ligurian Sea.The Ombrone and Usciana tributaries introduce anthropogenic pollutants into the Arno River,whilst Elsa tributary supplies significant contents of geogenic sulfate.The concentrations of dissolved nitrate and nitrite(up to 63 and 9 mg/L,respectively)and the respective isotopic values of𝛿15N and𝛿18O were also determined to understand origin and fate of the N-species in the Arno River Basin surface waters.The combined application of𝛿15N-NO_(3) and𝛿18O-NO_(3) and N-source apportionment modelling allowed the identification of soil organic nitrogen and sewage and domestic wastes as primary sources for dissolved NO_(3)-.The𝛿15N-NO_(2) and𝛿18O-NO_(2) values suggest that the nitrification process affects the ARB waters,thus controlling the abundances and proportion of the N-species.Our work indicates that additional efforts are needed to improve management strategies to reduce the release of nitrogenated species to the surface waters of the Arno River Basin,since little progress has been made from the early 2000s.展开更多
Water-cooled system have significantly enhanced the power generation efficiency of offshore wind turbines.However,these innovative systems are susceptible to substantial biological fouling,maintenance challenges,and h...Water-cooled system have significantly enhanced the power generation efficiency of offshore wind turbines.However,these innovative systems are susceptible to substantial biological fouling,maintenance challenges,and high upkeep costs.Therefore,the development of a specialized front-end filter tailored for direct current water-cooled system is importance.This involves the integration of dimensionally stable anode(DSA)and nickel alloy cathode,valued for their corrosion resistance in seawater,into a novel front-end filter system for Water-cooled applications.This system has the dual capability of generating hydrogen and chlorine for self-cleaning purposes.Implementing a flushing pulse electrolysis mode,it effectively mitigates electrode failure induced by cathodic calcium and magnesium deposition,thereby significantly prolonging electrode lifespan.Laboratory tests comprising system assembly and performance evaluations were conducted,with the system programmed to operate for 5 minutes every 24 hours under continuous flushing by natural seawater to simulate real-world conditions.After more than 11 months of continuous flushing,observations reveal that the DSA mesh and nickel alloy mesh maintain intact structural integrity and normal functioning.Subsequent 1꞉1 physical prototype Sea trial further validated the soundness of the system design and electrolytic control parameters.展开更多
The Ordovician Majiagou Formation(O1m)in the Ordos Basin is a crucial exploration field for natural gas,and exploration of the Ordovician middle assemblage(O_(1)m_(5)^(5-7))has recently yielded great breakthrough.The ...The Ordovician Majiagou Formation(O1m)in the Ordos Basin is a crucial exploration field for natural gas,and exploration of the Ordovician middle assemblage(O_(1)m_(5)^(5-7))has recently yielded great breakthrough.The Daniudi gas field provides a good case study to determine the gas source for the strata.The O_(1)m_(5)^(5-7)gas displays C1/C1-5 ratios of 0.932-0.985 and CO_(2)contents of 1.56%-11.75%,and the detectable H2S content ranges from 0.0002%to 1.8617%.Theδ^(13)C1,δ^(13)C2,δ^(13)CCO_(2),andδD_(1)values are−39.7‰to−35.6‰,−30.4‰to−23.7‰,−12.4‰to−4.6‰,and−204‰to−185‰,respectively.Identification of the gas origin and source indicates that the gaseous alkanes are commonly coal-derived gas.The gas was generated from the coal measures in the Taiyuan Formation(C_(3t))and subsequently migrated.A small amount of oil-associated gas,mainly from O1m carbonate source rocks,has been incorporated into the gas reservoir.The natural gas has experienced insignificant alteration by thermochemical sulfate reduction,and the relatively high levels of CO_(2)are probably associated with corrosion alteration of carbonate reservoirs by injected fluid during acid fracturing.展开更多
Li_(7)La_(3)Zr_(2)O_(12)-based electrolytes have got great promise for solid-state lithium(Li)metal batteries because of their high elastic modulus and wide electrochemical stability window.However,the insufficient co...Li_(7)La_(3)Zr_(2)O_(12)-based electrolytes have got great promise for solid-state lithium(Li)metal batteries because of their high elastic modulus and wide electrochemical stability window.However,the insufficient contact and heterogeneous Li deposition severely hinder their practical applications.Here,a flexible ternary polymethacrylate(PMA)matrix is designed to incorporate with Ta-doped Li_(7)La_(3)Zr_(2)O_(12)(LLZTO-PMA).The PMA matrix ensures excellent interfacial contact,while the synergistic effects of its polar carbonyl groups and its interaction with LLZTO creating fast interfacial Li^(+)pathways yield a high ionic conductivity of 0.266 mS cm^(-1)at 20℃.Moreover,the interaction between LLZTO and PMA matrix further guides the formation of a hybrid LiF/Li_(3)N-rich solid electrolyte interphase,which allows a fast Li^(+)interfacial kinetic due to its lowered Li^(+)diffusion barrier.Consequently,the LLZTO-PMA electrolyte contributes an ultra-stable Li anode interphase,attaining a lifespan exceeding 10,000 h in symmetric cells and retaining over 96%capacity after 600 cycles in full battery,demonstrating a breakthrough for high-performance solid-state batteries.展开更多
In natural aquatic ecosystems,algal-derived organic carbon(AOC)often coexists with exogenous organic carbon(EOC).Microbial utilization of these distinct carbon sources affects carbon flux and transformation in water c...In natural aquatic ecosystems,algal-derived organic carbon(AOC)often coexists with exogenous organic carbon(EOC).Microbial utilization of these distinct carbon sources affects carbon flux and transformation in water column and algal growth.Microcystis blooms significantly increase AOC levels in water,but the microbial transformation process of Microcystis-derived AOC in the presence of EOC remain poorly understood.We conducted a simulated experiment by introducing^(13)C-sodium bicarbonate and^(13)C-glucose as substrates for indoor simulation of non-axenic Microcystis aeruginosa(M.aeruginosa)populations in a sealed system.The microbial transformation processes of AOC and EOC and their effects on M.aeruginosa growth were investigated.Results demonstrated that the addition of glucose accelerated M.aeruginosa growth and significantly increased their biomass.During the experiment,as the particulate organic carbon and nitrogen content increased,the concentrations of CO_(2)and N_(2)O were gradually decreased,while the concentration of CH4 were gradually increased.Significant differences were observed in the microbial processes involved in the uptake of AOC and EOC.Bacteria involved in AOC transformation throughout the growth period were dominated by Proteobacteria,Gemmatimonadota,Actinobacteriota,Bacteroidota,Acidobacteriota,and Firmicutes.The bacteria involved in EOC transformation were dominated by Proteobacteria,Actinobacteriota,Firmicutes,Cyanobacteria,Armatimonadota,and Bacteroidota.Linear discriminant analysis Effect Size(LEfSe)analysis revealed Massilia and Akkermansia as biomarkers involved in AOC transformation,while Ligilactobacillus was associated with EOC transformation.These findings provide valuable insights into the effects of EOC on algae-bacteria interaction,and on the dynamics of carbon and nitrogen cycling among M.aeruginosa and its associated bacteria.展开更多
The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation backgroun...The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation background and strong tectonic activity have led to the simultaneous production of heavy oil and light oil from multi-layer in the area,which makes it very difficult to identify oil origins,presently,the hot debate on the oil origins needs to be clarified.In this paper,due to the selective consumption of different types of compounds in crude oils by severe and intense biodegradation,the commonly used oilsource correlation tools are ineffective or may produce misleading results,this study adopted a biomarker recovery method based on the principle of mass conservation that uses the sum of the mass of the residual biomarkers and their corresponding biodegradation products to obtain the mass of the original biomarkers,improving the reliability of oil origins determination.Based on the nature and occurrence of crude oils,the investigated oils are subdivided into three types,Group A,Group B and Group C.Group A,light oils occurred mainly in lower structure Neogene Shawan Formation in the western Chepaizi Uplift,while Group B,heavy oils occurred mainly in higher structure Neogene Shawan Formation in the western Chepaizi Uplift.The two types of crude oils may come from the mixed source of Jurassic Badaowan Formation source rocks(J_(1)b)and Paleogene Anjihaihe Formation source rocks(E_(2-3)a)in the Sikeshu Sag,and Jurassic Badaowan Formation source rocks(J_(1)b)are the main source of crude oils.Group C,heavy oils occurred mainly in Neogene Shawan Formation in the eastern Chepaizi Uplift,showing good correlation with the Permian(P_(1)f and P_(2)w)source rocks in the Shawan Sag.At the same time,by combining stable carbon isotope and parameters related to triaromatic steroids,the accuracy of the oilsource correlation results by biomarker recovery method was further verified.展开更多
文摘结合武汉市江岸区新直街社区规划实践,探索人工智能生成内容技术的文本生成和图像生成等模型在社区规划前、中期工作环节中的具体运用方法,并考察其对于效率创意和公平正义的促进情况。在“语言交流”环节,采用“Qwen+Ollama Web UI+本地专属知识库”的文本生成模型及运行框架,辅助规划设计师回复居民对话、提炼议题观点和实时分析语言情感倾向,促进规划共识达成。在“语言—方案转译”环节,基于“Stable Diffusion—Comfy UI”的图像生成模型及运行界面构建“激发设计灵感”和“优化底图照片”两个工作流,前者将规划共识转化为AI模型理解的提示词语言和相应的空间化参考方案,为设计者提供灵感创意,实现文本生成与图像生成两类模型之间的耦合;后者清理现状照片中前景遮挡要素以形成设计底图。在“方案设计”环节,根据不同居民的设计习惯,搭建“涂抹蒙版改绘”和“涂鸦线条改绘”两类基于现状照片的局部改绘工作流,快速生成具象草图方案。人工智能生成内容技术为社区规划的公众参与工作提供了全新思路和方案,同时该技术的运用需要突破传统的工具主义观念,不断致力于“技术赋权”而非“技术减权”。
文摘With the rapid development of generative artificial intelligence(GenAI),the task of story visualization,which transforms natural language narratives into coherent and consistent image sequences,has attracted growing research attention.However,existing methods still face limitations in balancing multi-frame character consistency and generation efficiency,which restricts their feasibility for large-scale practical applications.To address this issue,this study proposes a modular cloud-based distributed system built on Stable Diffusion.By separating the character generation and story generation processes,and integratingmulti-feature control techniques,a cachingmechanism,and an asynchronous task queue architecture,the system enhances generation efficiency and scalability.The experimental design includes both automated and human evaluations of character consistency,performance testing,and multinode simulation.The results show that the proposed system outperforms the baseline model StoryGen in both CLIP-I and human evaluation metrics.In terms of performance,under the experimental environment of this study,dual-node deployment reduces average waiting time by approximately 19%,while the four-node simulation further reduces it by up to 65%.Overall,this study demonstrates the advantages of cloud-distributed GenAI in maintaining character consistency and reducing generation latency,highlighting its potential value inmulti-user collaborative story visualization applications.
基金the China Scholarship Council(CSC)the Uplifting Reciprocal Research Scholarship Program for sponsoring Shixuan Lyu+1 种基金supported by MITACS Accelerate(No.IT39116)the Okanagan Basin Water Board water conservation and quality improvement grant program。
文摘Forests are experiencing more frequent and intense wildfires in Canada,which pose considerable threats to water quantity and quality,particularly during the summer low-flow period when water demand is high.While the impacts of wildfire on hydrology have been widely assessed at the watershed scale,the underlying mechanisms of the responses of summer low flows remain poorly understood.In this study,we employed an integrated research framework that combines hydrometric monitoring with geochemical tracing to evaluate how the 2021 White Rock Lake Wildfire affected summer low flows,and to identify the underlying mechanisms governing these responses in the Okanagan Valley,British Columbia(BC),Canada.We found that(1)summer low flows,represented by Q90(flows exceeded at 90%of the time in summer)significantly increased following the wildfire(p<0.05);(2)summer low flows were primarily regulated by snow water in early summer(July),while dominated by groundwater in late summer(August and September);and(3)enhanced snow water contribution and reduced evapotranspiration(ET)were two primary contributors to the increased summer low flows.Our results provide insights for developing sustainable water management strategies for the region in the context of climate change and increasing forest disturbance.This study also demonstrates that the combination of hydrometric monitoring and geochemical tracing is an effective approach towards uncovering mechanisms that drive low-flow responses.
基金financial support from the National Key Research and Development Program of China(Key Special Project for Marine Environmental Security and Sustainable Development of Coral Reefs 2022-102)National Science Foundation of China(No.42471129)Basic Research Program of Guangzhou Science and Technology Bureau(No.202201010341).
文摘Water use adaptive strategies for plants on tropical islands are far less clear than those in continental environments,largely because plants in tropical ecosystems are normally exposed to abundant solar energy.Thus,clarifying the characteristics of water conservation and uptake patterns by plants is critical for understanding the plant water adaptation in tropical ecosystems.To address this issue,we investigated the water retention capacity of litter from the dominant tree species(Casuarina equisetifolia)on a tropical island.Theδ^(2)H andδ^(18)O of the xylem water and soil water under the tree canopy,as well as theδ^(13)C in the needle-like twigs,were measured to explore the water use characteristics.Our findings revealed that the maximum water retention capacity of the litter ranged from 164.14 to 175.21 t/ha,indicating that the Casuarina litter is capable of soil water conservation,thus increasing soil water availability for plants.The major water uptake sources for the Casuarina trees tended to consist of water from shallow soil layers(10-20 cm)at peripheral canopy zones and revealing pronounced spatial heterogeneity.Moreover,compared with those in a continental coastal region,the water use efficiency of Casuarina trees on a tropical island was greater.Our results suggest that the ecological strategies used by Casuarina trees for soil water conservation and water use patterns on tropical island are diverse.Therefore,these findings provide insights into the biophysical effects of vegetation on soil water availability as well as the physiological acclimation strategies adopted by plants in tropical island ecosystems.
文摘The Arno River Basin(Central Italy)is affected by a considerable anthropogenic pressure due to the presence of large cities and widespread industrial and agricultural practices.In this work,26 water samples from the Arno River and its main tributaries were analyzed to assess the water pollution status.The geochemical composition of the Arno River changes from the source(dominated by a Ca-HCO_(3) facies)to the mouth(where a Na-Cl(SO4)chemistry prevails)with an increasing quality deterioration,as suggested by the Chemical Water Quality Index,due to anthropogenic contributions and seawater intrusion before flowing into the Ligurian Sea.The Ombrone and Usciana tributaries introduce anthropogenic pollutants into the Arno River,whilst Elsa tributary supplies significant contents of geogenic sulfate.The concentrations of dissolved nitrate and nitrite(up to 63 and 9 mg/L,respectively)and the respective isotopic values of𝛿15N and𝛿18O were also determined to understand origin and fate of the N-species in the Arno River Basin surface waters.The combined application of𝛿15N-NO_(3) and𝛿18O-NO_(3) and N-source apportionment modelling allowed the identification of soil organic nitrogen and sewage and domestic wastes as primary sources for dissolved NO_(3)-.The𝛿15N-NO_(2) and𝛿18O-NO_(2) values suggest that the nitrification process affects the ARB waters,thus controlling the abundances and proportion of the N-species.Our work indicates that additional efforts are needed to improve management strategies to reduce the release of nitrogenated species to the surface waters of the Arno River Basin,since little progress has been made from the early 2000s.
基金Supported by the Project of Design of Anti-corrosion and Anti-fouling Solutions for Offshore Wind Power Water-Cooled Systems(No.E428161)the National Natural Science Foundation of China(No.42176047)。
文摘Water-cooled system have significantly enhanced the power generation efficiency of offshore wind turbines.However,these innovative systems are susceptible to substantial biological fouling,maintenance challenges,and high upkeep costs.Therefore,the development of a specialized front-end filter tailored for direct current water-cooled system is importance.This involves the integration of dimensionally stable anode(DSA)and nickel alloy cathode,valued for their corrosion resistance in seawater,into a novel front-end filter system for Water-cooled applications.This system has the dual capability of generating hydrogen and chlorine for self-cleaning purposes.Implementing a flushing pulse electrolysis mode,it effectively mitigates electrode failure induced by cathodic calcium and magnesium deposition,thereby significantly prolonging electrode lifespan.Laboratory tests comprising system assembly and performance evaluations were conducted,with the system programmed to operate for 5 minutes every 24 hours under continuous flushing by natural seawater to simulate real-world conditions.After more than 11 months of continuous flushing,observations reveal that the DSA mesh and nickel alloy mesh maintain intact structural integrity and normal functioning.Subsequent 1꞉1 physical prototype Sea trial further validated the soundness of the system design and electrolytic control parameters.
基金sponsored by National Natural Science Foundation of China(Grant Nos.U2244209,42172149,42488101,and 42141021).
文摘The Ordovician Majiagou Formation(O1m)in the Ordos Basin is a crucial exploration field for natural gas,and exploration of the Ordovician middle assemblage(O_(1)m_(5)^(5-7))has recently yielded great breakthrough.The Daniudi gas field provides a good case study to determine the gas source for the strata.The O_(1)m_(5)^(5-7)gas displays C1/C1-5 ratios of 0.932-0.985 and CO_(2)contents of 1.56%-11.75%,and the detectable H2S content ranges from 0.0002%to 1.8617%.Theδ^(13)C1,δ^(13)C2,δ^(13)CCO_(2),andδD_(1)values are−39.7‰to−35.6‰,−30.4‰to−23.7‰,−12.4‰to−4.6‰,and−204‰to−185‰,respectively.Identification of the gas origin and source indicates that the gaseous alkanes are commonly coal-derived gas.The gas was generated from the coal measures in the Taiyuan Formation(C_(3t))and subsequently migrated.A small amount of oil-associated gas,mainly from O1m carbonate source rocks,has been incorporated into the gas reservoir.The natural gas has experienced insignificant alteration by thermochemical sulfate reduction,and the relatively high levels of CO_(2)are probably associated with corrosion alteration of carbonate reservoirs by injected fluid during acid fracturing.
基金supported by the National Natural Science Foundation of China(No.22305106)the Postdoctoral Fellowship Program of CPSF(GZC20230682)Beijing Key Laboratory of High-Entropy Energy materials and Devices,Beijing Institute of Nanoenergy and Nanosystems(No.GS 2025ZD005)。
文摘Li_(7)La_(3)Zr_(2)O_(12)-based electrolytes have got great promise for solid-state lithium(Li)metal batteries because of their high elastic modulus and wide electrochemical stability window.However,the insufficient contact and heterogeneous Li deposition severely hinder their practical applications.Here,a flexible ternary polymethacrylate(PMA)matrix is designed to incorporate with Ta-doped Li_(7)La_(3)Zr_(2)O_(12)(LLZTO-PMA).The PMA matrix ensures excellent interfacial contact,while the synergistic effects of its polar carbonyl groups and its interaction with LLZTO creating fast interfacial Li^(+)pathways yield a high ionic conductivity of 0.266 mS cm^(-1)at 20℃.Moreover,the interaction between LLZTO and PMA matrix further guides the formation of a hybrid LiF/Li_(3)N-rich solid electrolyte interphase,which allows a fast Li^(+)interfacial kinetic due to its lowered Li^(+)diffusion barrier.Consequently,the LLZTO-PMA electrolyte contributes an ultra-stable Li anode interphase,attaining a lifespan exceeding 10,000 h in symmetric cells and retaining over 96%capacity after 600 cycles in full battery,demonstrating a breakthrough for high-performance solid-state batteries.
基金Supported by the Jiangsu Provincial Science and Technology Planning Project(No.BK20231516)the National Natural Science Foundation of China(Nos.42293264,32371606,31971449)。
文摘In natural aquatic ecosystems,algal-derived organic carbon(AOC)often coexists with exogenous organic carbon(EOC).Microbial utilization of these distinct carbon sources affects carbon flux and transformation in water column and algal growth.Microcystis blooms significantly increase AOC levels in water,but the microbial transformation process of Microcystis-derived AOC in the presence of EOC remain poorly understood.We conducted a simulated experiment by introducing^(13)C-sodium bicarbonate and^(13)C-glucose as substrates for indoor simulation of non-axenic Microcystis aeruginosa(M.aeruginosa)populations in a sealed system.The microbial transformation processes of AOC and EOC and their effects on M.aeruginosa growth were investigated.Results demonstrated that the addition of glucose accelerated M.aeruginosa growth and significantly increased their biomass.During the experiment,as the particulate organic carbon and nitrogen content increased,the concentrations of CO_(2)and N_(2)O were gradually decreased,while the concentration of CH4 were gradually increased.Significant differences were observed in the microbial processes involved in the uptake of AOC and EOC.Bacteria involved in AOC transformation throughout the growth period were dominated by Proteobacteria,Gemmatimonadota,Actinobacteriota,Bacteroidota,Acidobacteriota,and Firmicutes.The bacteria involved in EOC transformation were dominated by Proteobacteria,Actinobacteriota,Firmicutes,Cyanobacteria,Armatimonadota,and Bacteroidota.Linear discriminant analysis Effect Size(LEfSe)analysis revealed Massilia and Akkermansia as biomarkers involved in AOC transformation,while Ligilactobacillus was associated with EOC transformation.These findings provide valuable insights into the effects of EOC on algae-bacteria interaction,and on the dynamics of carbon and nitrogen cycling among M.aeruginosa and its associated bacteria.
基金co-funded by the National Natural Science Foundation of China(42372160,42072172)。
文摘The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation background and strong tectonic activity have led to the simultaneous production of heavy oil and light oil from multi-layer in the area,which makes it very difficult to identify oil origins,presently,the hot debate on the oil origins needs to be clarified.In this paper,due to the selective consumption of different types of compounds in crude oils by severe and intense biodegradation,the commonly used oilsource correlation tools are ineffective or may produce misleading results,this study adopted a biomarker recovery method based on the principle of mass conservation that uses the sum of the mass of the residual biomarkers and their corresponding biodegradation products to obtain the mass of the original biomarkers,improving the reliability of oil origins determination.Based on the nature and occurrence of crude oils,the investigated oils are subdivided into three types,Group A,Group B and Group C.Group A,light oils occurred mainly in lower structure Neogene Shawan Formation in the western Chepaizi Uplift,while Group B,heavy oils occurred mainly in higher structure Neogene Shawan Formation in the western Chepaizi Uplift.The two types of crude oils may come from the mixed source of Jurassic Badaowan Formation source rocks(J_(1)b)and Paleogene Anjihaihe Formation source rocks(E_(2-3)a)in the Sikeshu Sag,and Jurassic Badaowan Formation source rocks(J_(1)b)are the main source of crude oils.Group C,heavy oils occurred mainly in Neogene Shawan Formation in the eastern Chepaizi Uplift,showing good correlation with the Permian(P_(1)f and P_(2)w)source rocks in the Shawan Sag.At the same time,by combining stable carbon isotope and parameters related to triaromatic steroids,the accuracy of the oilsource correlation results by biomarker recovery method was further verified.
