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Parallelization and I/O Performance Optimization of a Global Nonhydrostatic Dynamical Core Using MPI 认领 引用
1
作者 Tiejun Wang Liu Zhuang +2 位作者 Julian MKunkel Shu Xiao Changming Zhao 《Computers, Materials & Continua》 SCIE EI 2020年第6期1399-1413,共15页
The Global-Regional Integrated forecast System(GRIST)is the next-generation weather and climate integrated model dynamic framework developed by Chinese Academy of Meteorological Sciences.In this paper,we present sever... The Global-Regional Integrated forecast System(GRIST)is the next-generation weather and climate integrated model dynamic framework developed by Chinese Academy of Meteorological Sciences.In this paper,we present several changes made to the global nonhydrostatic dynamical(GND)core,which is part of the ongoing prototype of GRIST.The changes leveraging MPI and PnetCDF techniques were targeted at the parallelization and performance optimization to the original serial GND core.Meanwhile,some sophisticated data structures and interfaces were designed to adjust flexibly the size of boundary and halo domains according to the variable accuracy in parallel context.In addition,the I/O performance of PnetCDF decreases as the number of MPI processes increases in our experimental environment.Especially when the number exceeds 6000,it caused system-wide outages(SWO).Thus,a grouping solution was proposed to overcome that issue.Several experiments were carried out on the supercomputing platform based on Intel x86 CPUs in the National Supercomputing Center in Wuxi.The results demonstrated that the parallel GND core based on grouping solution achieves good strong scalability and improves the performance significantly,as well as avoiding the SWOs. 展开更多
关键词 MPI parallelization performance optimization global nonhydrostatic dynamical core
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Memristor devices for next-generation computing:from performance optimization to application-specific co-design 认领 引用 被引量：1
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作者 Zhaorui Liu Caifang Gao +5 位作者 Jingbo Yang Zuxin Chen Enlong Li Jun Li Mengjiao Li Jianhua Zhang 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第1期119-146,共28页
Memristors have emerged as a transformative technology in the realm of electronic devices,offering unique advantages such as fast switching speeds,low power consumption,and the ability to sensor-memory-compute.The app... Memristors have emerged as a transformative technology in the realm of electronic devices,offering unique advantages such as fast switching speeds,low power consumption,and the ability to sensor-memory-compute.The applications span across non-volatile memory,neuromorphic computing,hardware security,and beyond,prompting memristors to become a versatile solution for next-generation computing and data storage systems.Despite enormous potential of memristors,the transition from laboratory prototypes to large-scale applications is challenging in terms of material stability,device reproducibility,and array scalability.This review systematically explores recent advancements in high-performance memristor technologies,focusing on performance enhancement strategies through material engineering,structural design,pulse protocol optimization,and algorithm control.We provide an in-depth analysis of key performance metrics tailored to specific applications,including non-volatile memory,neuromorphic computing,and hardware security.Furthermore,we propose a co-design framework that integrates device-level optimizations with operational-level improvements,aiming to bridge the gap between theoretical models and practical implementations. 展开更多
关键词 memristor performance optimization device design neuromorphic computing
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Whole-process performance prediction and optimization of CIGS solar cells via interpretable machine learning 认领 引用
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作者 Jiaxin Cui Xinyi Sun +3 位作者 Changhao Li Yuhao Zhang Chenyang Zhou Dianyu E 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期324-338,I0009,共15页
Copper indium gallium selenide(CIGS)thin-film solar cells have attracted substantial attention due to their high efficiency and scalable fabrication processes.However,achieving optimized and reproducible performance r... Copper indium gallium selenide(CIGS)thin-film solar cells have attracted substantial attention due to their high efficiency and scalable fabrication processes.However,achieving optimized and reproducible performance remains challenging because of the complex process flows and interdependent,multidimensional parameters inherent to these heterojunction devices.Elucidating the process-structureperformance relationship between manufacturing parameters and device output is therefore essential.In this study,we demonstrate an effective approach for optimizing CIGS performance using interpretable machine learning(ML)and construct a whole-process database comprising 756 experimental samples.Through multi-model comparison,the Categorical Boosting(CatBoost)algorithm is identified as the optimal model across four performance metrics,yielding a coefficient of determination(R2)of 0.755 for power conversion efficiency(PCE)with a root mean square error(RMSE)of 2.3%.By integrating Shapley additive explanations(SHAP)with parallel-coordinates visualization,this study systematically quantifies the dominant contributions of the anti-reflection coating(ARC)and fabrication methodologies,while revealing critical compositional trade-offs.Moreover,a Golden Process Corridor for high-efficiency devices is established,indicating that improved performance is associated with ARC deposition,the three-stage co-evaporation method,an absorber thickness of 2.0–3.0μm,[Cu]/([Ga]+[In])ratio of 0.89–0.95,and[Ga]/([Ga]+[In])ratio of 0.29–0.42.ML demonstrates strong predictive capability for device performance,offering a transferable roadmap to accelerate process optimization for singlejunction and tandem CIGS devices while reducing research and development costs. 展开更多
关键词 CIGS solar cell Machine learning Performance prediction Device physics Process optimization
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Influence of surface rib parameters of bolts on anchoring performance and optimization 认领 引用
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作者 LIU Xiaohu YANG Yong +3 位作者 YAO Zhishu ZHA Wenhua XI Yanqi WANG Jiaqi 《Journal of Southeast University(English Edition)》 EI CAS 2026年第1期100-111,共12页
Deep coal mining rock support structures using rock bolts face complex geological conditions such as high ground temperatures and groundwater.Rock mass deformation and failure caused by bolt failure frequently occur,m... Deep coal mining rock support structures using rock bolts face complex geological conditions such as high ground temperatures and groundwater.Rock mass deformation and failure caused by bolt failure frequently occur,making it crucial to enhance the anchoring performance of rock bolts.First,the stress state of the anchor rod under axial loading across five stages of any anchored segment is analyzed.The shear stress patterns at the anchoring interface during different stages are elucidated.A refined mechanical model of the anchoring interface incorporating surface rib parameters is established.A failure criterion for the anchoring interface under the influence of ground temperature or groundwater is derived and validated.Second,the influence of anchor rib parameters on anchoring force is abalyzed,and in-situ shear tests are conducted.Results indicate that increasing the rib angle and optimizing rib spacing can enhance anchoring force.To minimize the shear component of axial force at the anchor interface,the rib angle of the anchor bolt should not be less than 70°.When the anchor grout possesses high inherent strength,the spacing between ribs on the anchor bolt surface may be increased(to 24 mm or greater).Finally,methods for enhancing the anchoring performance of bolts in deep complex strata are proposed,providing technical references for the safe and efficient support of tunnel rock masses in similar geological conditions. 展开更多
关键词 geotechnical engineering anchorage support anchorage interface resin anchoring agent surface rib parameters anchorage performance optimization
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Explicit Reconstruction and Shape Optimization of Topology Optimization Results with Mechanical Performance Preservation 认领 引用
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作者 Yuting Tang Yu Li +3 位作者 Xingyu Xiang Jiaxiang Luo Weien Zhou Wen Yao 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第4期314-342,共29页
Topology optimization is widely used in lightweight structural design to determine optimal material distributions.However,density-based results are represented in an implicit pixel-wise form with blurred boundaries an... Topology optimization is widely used in lightweight structural design to determine optimal material distributions.However,density-based results are represented in an implicit pixel-wise form with blurred boundaries and jagged contours,which limits their direct use in engineering design and manufacturing.This study proposes a two-stage post-processing framework to reconstruct topology optimization results into explicit parametric geometries while preserving structural performance.The framework first extracts and processes contour points from the optimized density field and reconstructs the geometry using Non-Uniform Rational B-Splines(NURBS).A subsequent shape optimization step based on the fixed-grid finite element method(FG-FEM)adjusts boundary control points to reduce performance deviation introduced during reconstruction while satisfying volume and topological homeomorphism constraints.Numerical examples,including the cantilever beam,Michell beam,half-MBB beam,and a quadcopter frame,validate the effectiveness of the framework.The results show that the proposed method enables explicit geometric reconstruction while maintaining structural performance,with compliance deviations within 0.5%-2.6%in benchmark cases. 展开更多
关键词 Topology optimization post processing explicit reconstruction shape optimization topological homeomorphism performance preservation
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Performance Optimization of an Integrated Full-Capacity Domestic Hot Water Supply System for Hotel Applications 认领 引用
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作者 Lanyue Liu Chunzhi Zhang Zhongyi Yu 《Energy Engineering》 EI 2026年第5期366-382,共17页
This study develops an optimized integrated system for full-capacity hot water supply in hotels by combining solar thermal energy and air-source heat pumps.Using a hotel in Wuhan as a case study,a four-season×fou... This study develops an optimized integrated system for full-capacity hot water supply in hotels by combining solar thermal energy and air-source heat pumps.Using a hotel in Wuhan as a case study,a four-season×four-occupancy multidimensional working-condition matrix was established.Dynamic simulation and multi-objective optimization were performed on TRNSYS-TRNOPT,with the cost-benefit ratio(CBR)as the core evaluation metric.Key parameters—including collector area,tilt and azimuth angles,heat pump capacity,and storage tank volume—were jointly optimized.Model calibration against measured data yielded a deviation of less than 8%.The results demonstrate that the optimized system can achieve 60.8%energy savings and reduce annual carbon emissions by 132.8 t.The best-performing case(Case 1-1)achieved a payback period of 4.1 years,presenting a feasible pathway for decarbonizing buildings with high hot water demand.This research confirms the technical and economic viability of solar–heat pump systems for hotel applications,providing strong support for the achievement of China’s“Dual Carbon”targets in public buildings. 展开更多
关键词 Domestic hot water solar energy air-source heat pump(ASHP) full-load supply performance optimization TRNSYS simulation
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An efficient strategy to improve photoelectrochemical performance of TiO2nanowire arrays by optimization electrolytes 认领 引用
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作者 Zhao Xin Wang Wenzhong 《首都师范大学学报（自然科学版）》 2026年第4期1-10,共10页
Optimization of photoelectrochemical(PEC)performance for electrode is very important to efficiently utilize solar energy in the form of chemical energy.The aim of this study is to optimize the PEC performance of TiO_(... Optimization of photoelectrochemical(PEC)performance for electrode is very important to efficiently utilize solar energy in the form of chemical energy.The aim of this study is to optimize the PEC performance of TiO2nanowire array electrodes via the optimization of Na2SO3 and Na2SO4 electrolytes.The electrode shows significant improvement for the PEC performance in Na2SO3 electrolyte with a photocurrent density of 0.8 mA/cm2,which is 5 times higher than that in Na2SO4 electrolyte.The incident photon-to-current conversion efficiency obtained in Na2SO3 electrolyte is 14.7%atλ=390 nm,which is 2.6 times higher than that in Na2SO4 electrolyte.The Mott-Schottky and electrochemical impedance spectroscopy measurements experimentally show that the improved PEC performance is attributed to the efficient separation of photo-generated electrons and holes induced by the consumption of holes by SO32-.The results of this study provide a promising strategy to improve the PEC performance of electrode by choosing the optimal electrolyte. 展开更多
关键词 nanowire array PEC performance electrolyte optimization hole depletion competitive
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Study on Performance Optimization of Radiation Protection Materials Based on Nanotechnology 认领 引用
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作者 Zhengyang Yuxiong 《Journal of Electronic Research and Application》 2026年第3期184-189,共6页
With the continuous development of nuclear energy development,medical treatment and aerospace,radiation protection materials are developing towards light weight,high efficiency and high stability.In the past,tradition... With the continuous development of nuclear energy development,medical treatment and aerospace,radiation protection materials are developing towards light weight,high efficiency and high stability.In the past,traditional protective materials have been difficult to adapt to the needs of complex working conditions.Based on the application of nano-technology radiation protection materials,this paper discusses the preparation technology and engineering regulation of nano-radiation protection materials,and explores the optimization path of the performance of radiation protection materials based on nano-technology,which provides a reference for R&D and application of high-performance nano-radiation protection materials. 展开更多
关键词 Nanotechnology Radiation protection materials Performance optimization
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Progress on Microstructure and Performance Optimization in H/MEAs Regulated by Single and Hierarchical Heterostructures 认领 引用 被引量：2
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作者 Wang Bing Li Chunyan +2 位作者 Wang Xinhua Li Xiaocheng Kou Shengzhong 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2025年第3期640-664,共25页
The development of high-performance structural and functional materials is vital in many industrial fields.High-and medium-entropy alloys(H/MEAs)with superior comprehensive properties owing to their specific microstru... The development of high-performance structural and functional materials is vital in many industrial fields.High-and medium-entropy alloys(H/MEAs)with superior comprehensive properties owing to their specific microstructures are promising candidates for structural materials.More importantly,multitudinous efforts have been made to regulate the microstructures and the properties of H/MEAs to further expand their industrial applications.The various heterostructures have enormous potential for the development of H/MEAs with outstanding performance.Herein,multiple heterogeneous structures with single and hierarchical heterogeneities were discussed in detail.Moreover,preparation methods for compositional inhomogeneity,bimodal structures,dualphase structures,lamella/layered structures,harmonic structures(core-shell),multiscale precipitates and heterostructures coupled with specific microstructures in H/MEAs were also systematically reviewed.The deformation mechanisms induced by the different heterostructures were thoroughly discussed to explore the relationship between the heterostructures and the optimized properties of H/MEAs.The contributions of the heterostructures and advanced microstructures to the H/MEAs were comprehensively elucidated to further improve the properties of the alloys.Finally,this review discussed the future challenges of high-performance H/MEAs for industrial applications and provides feasible methods for optimizing heterostructures to enhance the comprehensive properties of H/MEAs. 展开更多
关键词 heterogeneous structures H/MEAs HDI effect microstructure regulation performance optimization
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Research on the Performance Optimization of a Hydraulic PTO System for a“Dolphin 1”Oscillating-Body Wave Energy Converter 认领 引用
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作者 LAI Wen-bin LI Jia-long +2 位作者 RONG Si-zhang YANG Hong-kun ZHENG Xiong-bo 《China Ocean Engineering》 SCIE EI CSCD 2025年第1期166-178,共13页
In this work,an oscillating-body wave energy converter(OBWEC)with a hydraulic power take-off(PTO)system named“Dolphin 1”is designed,in which the hydraulic PTO system is equivalent to a transfer station and plays a c... In this work,an oscillating-body wave energy converter(OBWEC)with a hydraulic power take-off(PTO)system named“Dolphin 1”is designed,in which the hydraulic PTO system is equivalent to a transfer station and plays a crucial role in ensuring the stability of the electrical energy output and the efficiency of the overall system.A corresponding mathematical model for the hydraulic PTO system has been established,the factors that influence its performance have been studied,and an algorithm for solving the optimal working pressure has been derived in this paper.Moreover,a PID control method to enable the hydraulic PTO system to automatically achieve optimal performance under different wave conditions has been designed.The results indicate that,compared with single-chamber hydraulic cylinders,double-chamber hydraulic cylinders have a wider application range and greater performance;the accumulator can stabilize the output power of the hydraulic PTO system and slightly increase it;excessively large or small hydraulic motor displacement hinders system performance;and each wave condition corresponds to a unique optimal working pressure for the hydraulic PTO system.In addition,the relationship between the optimal working pressure Pmand the pressure Phof the wave force acting on the piston satisfies Pm2=∫t_(1)t2Ph2dt/(t2-t1).Furthermore,adjusting the hydraulic motor displacement automatically via a PID controller ensures that the actual working pressure of the hydraulic PTO system consistently reaches or approaches its theoretically optimal value under various wave conditions,which is a very effective control method for enhancing the performance of the hydraulic PTO system. 展开更多
关键词 hydraulic PTO system performance optimization wave energy converter optimal working pressure PID control
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Reinforcement Learning-Based Spectral Performance Optimization for UAV-Assisted MIMO Communication System 认领 引用
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作者 Lu Dong Hong-Wei Kong Xin Yuan 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2025年第6期1283-1285,共3页
Dear Editor,This letter is concerned with the problem of stable high-quality signal transmission of unmanned aerial vehicle(UAV)-assisted multiple-input multiple-output(MIMO)communication system.The particle swarm opt... Dear Editor,This letter is concerned with the problem of stable high-quality signal transmission of unmanned aerial vehicle(UAV)-assisted multiple-input multiple-output(MIMO)communication system.The particle swarm optimization(PSO)algorithm is used to achieve optimal beamforming and power allocation for this system.Additionally,sensitive particle(SP)and parameter adaptive adjustment are introduced into the traditional PSO algorithm,aiming to improve the performance of the PSO algorithm in dynamic environments with real-time changes in the UAV position.A reinforcement learning(RL)-based approach is proposed to obtain optimal UAV trajectory and adaptive adjustment strategy for PSO parameters,which combine with a specific obstacle avoidance scheme to achieve accurate UAV navigation while satisfying high-quality signal transmission.Simulation experiments show that our scheme provides higher and more stable spectral efficiency as well as more efficient UAV navigation than the currently commonly used scheme with a single RL approach. 展开更多
关键词 parameter adaptive adjustment spectral performance optimization particle swarm optimization pso algorithm UAV assisted MIMO beamforming power allocation particle swarm optimization reinforcement learning
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Optimization of micro/nano ceramic 3D-printing process for scale-textured surfaces for enhanced tribological performance 认领 引用
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作者 Xiaohui Jiang Jirui Liu +5 位作者 Yan Wang Zishan Ding Mengcan Yao Li Ji Dongdong Xu Jie Liu 《Additive Manufacturing Frontiers》 CSCD 2025年第4期248-261,共14页
Increasing the texture complexity of high-performance surfaces can enhance their antifriction properties by altering their distribution and retention of lubricating oils.When a fluid flows through a fish-scale texture... Increasing the texture complexity of high-performance surfaces can enhance their antifriction properties by altering their distribution and retention of lubricating oils.When a fluid flows through a fish-scale texture,a lubricating layer is formed,effectively reducing friction.In this study,a bionic fish-scale structure is proposed,and ceramic components are fabricated and analyzed using microano additive-manufacturing technology.First,the effects of various parameters on the antifriction performance of the fish-scale texture under hydrodynamic lubrication conditions are investigated.Then,the pressure distribution of the oil film—including both positive and negative pressures—is simulated by adjusting parameters such as the angleα,ratio of textured area to total surface area,and depth of the fish-scale texture.The results indicate that for a textured area that accounts for 20%of the total surface,texture depth of 150μm,and angleαof 30°,the pressure differential reaches its maximum.Finally,based on the optimized parameters,the designed fish-scale structure is fabricated using microano ceramic three-dimensional-printing technology.Friction and wear tests are conducted on the sintered samples.The experimental results align well with the simulation data,indicating that the structure can reduce the friction coefficient by approximately 15%,thereby significantly improving the antifriction performance.This study provides a valuable reference for the surface engineering of other high-performance functional structures. 展开更多
关键词 Microano ceramic 3D printing Bionic texture of fish scales Friction performance Parameter optimization
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Topology Optimization Design of a Hub Central Component Considering Fatigue Performance 认领 引用
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作者 Rui Xu Chaogan Gao +2 位作者 Jiale Shi Guorui Yu Quhao Li 《Computer Modeling in Engineering & Sciences》 SCIE EI 2025年第10期1-16,共16页
To address the design challenges of helicopter hub central components under high-performance requirements,this paper conducts safe-life topology optimization design research considering fatigue performance for rotor h... To address the design challenges of helicopter hub central components under high-performance requirements,this paper conducts safe-life topology optimization design research considering fatigue performance for rotor hub central components under multi-load conditions,combined with helicopter fatigue strength engineering design theory.For dealing with the issues of derivative calculation difficulties when directly considering fatigue constraints in existing topology optimization methods,this study establishes a mathematical formulation suitable for structural topology optimization of hub central components by combining modified structural safety fatigue limits based on isolife curves.Then the sensitivity analysis of design variables is derived,and an optimization designmodel for typical main rotor hub central components is constructed.By controlling the safe-life equivalent stress of the hub central structure,the goal of managing structural fatigue life is achieved,providing new insights for long-life,high-reliability hub central component design.The paper presents a topology optimization case study of a typical five-armhub central component,completes optimized structure reconstruction and fatigue strength analysis,which validates the effectiveness of the proposed methodology. 展开更多
关键词 Hub central component equivalent stress fatigue performance safe-life design topology optimization
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An up-to-Date Review on Structural Design and Optimization of Offshore Jacket Foundations 认领 引用
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作者 HAN Mu-xuan DU Zun-feng +3 位作者 ZHU Hai-ming YUAN Qiu-yu ZHU Hai-tao LI Yancang 《China Ocean Engineering》 SCIE EI CSCD 2026年第2期231-249,共19页
The utilization of marine resources has become a strategic priority of global significance.Offshore platforms and offshore wind turbines are critical components of offshore energy development systems.To address the co... The utilization of marine resources has become a strategic priority of global significance.Offshore platforms and offshore wind turbines are critical components of offshore energy development systems.To address the complexity,randomness,and uncertainty inherent in the marine environment and to ensure the safety of offshore installations during service,structural analysis and optimization of their foundations are essential.Jacket foundations,which provide high rigidity and stability,are suitable for shallow water and have emerged as the preferred foundation type for deepwater offshore installations.This study systematically reviews recent advances in theoretical modeling,numerical simulation,and experimental validation of structural response analyses and optimization methodologies for jacket foundations under complex marine conditions.Driven by diverse engineering requirements,researchers have proposed various structural optimization strategies.Existing efforts have primarily focused on structural topology,lightweight design,and performance-based optimization.Furthermore,this review identifies key technical challenges and outlines future research directions for optimizing offshore jacket foundations in ocean engineering. 展开更多
关键词 ocean engineering offshore installations jacket foundation performance analysis design optimization
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Multi-objective optimization design of biomimetic porous scaffolds based on cancellous bone structure 认领 引用
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作者 Sujing Tian He Gong +2 位作者 Xiang Zhang Jiazi Gao Liming Zhou 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第6期546-564,共19页
As age advances,accumulation of bone regeneration inhibitors in osteoporotic patients increases,resulting in larger bone defect areas and varying degrees of defects.When studying bone regeneration in osteoporotic bone... As age advances,accumulation of bone regeneration inhibitors in osteoporotic patients increases,resulting in larger bone defect areas and varying degrees of defects.When studying bone regeneration in osteoporotic bone defects,researchers often lack specificity on different bone quality statuses.To design a porous scaffold more similar to cancellous bone to promote bone regeneration,a multi-objective optimization design of biomimetic porous scaffold based on cancellous bone images was carried out in this study.Vertebral cancellous bones from rats with different bone quality statuses caused by various ovariectomy durations served as examples.First,the microstructure,mechanical and biological properties parameters of vertebral cancellous bones were calculated based on images from 20-,30-,and 38-week-old rats without ovariectomy and 30-and 38-week-old rats with ovariectomy(10 weeks and 18 weeks after ovariectomy).Second,the effects of constant value(C),which affects scaffold thickness,scale factor of z-axis(N),influencing stretching and compression of unit cell,and unit cell size(L)on the mechanical and biological properties of Schoen Gyroid and Schoen I-WP were investigated.Third,Schoen Gyroid and Schoen I-WP were optimized and evaluated using non-dominated genetic algorithm-II(NSGA-II)and complex proportional assessment method,with the elastic modulus of cancellous bones from 30-and 38-week-old ovariectomized rats as performance constraint to obtain the best structure tailored to each ovariectomized group.The surface curvature of the scaffold could be changed by stretching or compressing the unit cell,and the pore size could be changed by altering the unit cell thickness and size to obtain scaffolds suitable for different extents of bone defects.The optimized scaffolds met mechanical and biological requirements.Schoen I-WP exhibited superior comprehensive performance compared to Schoen Gyroid.The optimized design framework proposed in this study can be applied to bone defects of any age,bone site,and bone quality status,and has potential application for personalized treatment of bone defects. 展开更多
关键词 Osteoporotic bone defect Biomimetic porous scaffold Comprehensive performance Multi-objective optimization Complex proportional assessment method
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Carbon-fixing backfill materials for in-situ conversion Mining:Design,performance and CO2mitigation potential 认领 引用
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作者 Yang Ju Yu Fei +2 位作者 Qi Zhong Hongwei Zhou Kai Wang 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2026年第8期1535-1550,共16页
Despite its abundance and technological maturity,coal imposes severe environmental and geological impacts during traditional extraction and use,including land subsidence,waste generation,and large CO2emissions that... Despite its abundance and technological maturity,coal imposes severe environmental and geological impacts during traditional extraction and use,including land subsidence,waste generation,and large CO2emissions that challenge sustainable development.Carbon-fixing backfill technology,integrating mineral carbonation with cemented gangue backfill,offers a promising pathway to emission reduction,carbon fixation,ecological restoration,and hazard mitigation.However,the mechanical performance and geological compatibility of carbon-fixing backfill,along with the carbon fixation capacity of the cementitious system have been overlooked,limiting practical implementation and development.Given its resource endowment,China relies on coal as its primary energy source and has set dual-carbon targets to ensure both energy security and emission reduction.As one of the world's largest CO2emitters,the country faces substantial pressure to curb carbon emissions.We propose an in-situ conversion mining and carbon-fixing backfill approach,enabled by an intelligent unmanned mining machine,to achieve simultaneous CO2sequestration and large-scale disposal of coal-derived solid waste.Tailored formulations for varying gangue contents deliver tunable compressive strength(1.2-24.1 MPa),adequate fluidity,and net-negative carbon emissions of up to 145 kg CO2.Life-cycle assessment and national scenario modeling show a sequestration potential of 133-315 Mt CO2/yr and utilization of 191 Mt waste/yr.By targeting the core mining regions,this framework delivers a viable solution for low-carbon resource conversion,directly addressing the dual challenges of carbon mitigation and waste disposal. 展开更多
关键词 In-situ conversion mining Carbon-fixing backfill materials Performance optimization Life-cycle assessment National CO2mitigation potential
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High-efficiency Photocatalytic Performance of Bi/Bi2Fe4O9Nanocomposites Synthesized by Hydrothermal Method for Degradation of Bisphenol A 认领 引用
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作者 WANG Junjie LI Yijie +1 位作者 LI Xinyi GUO Dongyun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第2期364-370,共7页
Bi/Bi2Fe4O9nanocomposites consisting of Bi2Fe4O9nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi2Fe4O9nanosheet surfaces... Bi/Bi2Fe4O9nanocomposites consisting of Bi2Fe4O9nanosheets decorated with Bi nanodots were synthesized by a hydrothermal method.The formation of Bi nanodots on the Bi2Fe4O9nanosheet surfaces was attributed to the reducibility of 2-methoxyethanol in the precursor solution.Comparative photocatalytic evaluation reveals that the Bi/Bi2Fe4O9nanocomposites significantly enhance the degradation efficiency(99.0%)of bisphenol A compared with Bi2Fe4O9nanosheets(64.2%)under 120 min simulated solar irradiation.This remarkable enhancement can be attributed to the established Bi/Bi2Fe4O9heterojunction structure,which effectively facilitates the separation of photogenerated electron-hole pairs and accelerates interfacial charge transfer between the metallic Bi nanodots and semiconductor Bi2Fe4O9nanosheets.The synergistic effects arising from this unique architecture ultimately lead to superior photocatalytic performance. 展开更多
关键词 Bi2Fe4O9 nanosheets Bi nanodots nanocomposite hydrothermal method photocatalytic performance
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Beneficial effects of biochar on soil quality and plant performance are dose-dependent and closely associated with soil pH 认领 引用
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作者 Jiafan LI Mengyuan SONG +3 位作者 Junhui YIN Owen FENTON Lihong GAO Yongqiang TIAN 《Pedosphere》 SCIE CAS CSCD 2026年第4期947-961,共15页
Soil degradation threatens global agriculture and food security.Biochar derived from agricultural waste is widely used as a soil amendment to restore degraded soils.However,there is limited information on how differen... Soil degradation threatens global agriculture and food security.Biochar derived from agricultural waste is widely used as a soil amendment to restore degraded soils.However,there is limited information on how different biochar application rates affect overall soil quality and plant performance under various soil pH conditions.A greenhouse pot experiment was conducted to evaluate the responses of soil quality and plant performance to different application rates(0(control),1.25%,2.50%,5.00%,and 10.00%,corresponding to approximately 0,28,56,112,and 224 Mg ha-1,respectively)of palm empty fruit-based biochar(with a pH of 9.84)under various soil pH conditions(acidic,neutral,and alkaline).A comprehensive soil quality index(SQI,integrating physical,chemical,and microbial properties)and a plant performance index(PPI,integrating growth parameters)were used to assess key cucumber growth traits and soil quality responses.Results showed that both PPI and SQI increased with higher biochar application rates in acidic soil,while in neutral and alkaline soils,they increased at lower rates but decreased at higher rates.Based on SQI and PPI results,the optimal biochar application rates(OBARs)for acidic,neutral,and alkaline soils were 10.00%,5.00%,and 2.50%,respectively.At these OBARs,SQI increased by 55.51%,6.33%,and 17.88%,and PPI increased by 72.01%,203.62%,and 36.77%in acidic,neutral,and alkaline soils,respectively.Correlation analysis revealed an inverse relationship between OBARs and initial soil pH and a parabolic relationship between changes in SQI and final soil pH,indicating the importance of optimal soil pH in determining the effectiveness of biochar application.Management decisions related to cucumber cultivation should be cognizant of the beneficial effects of biochar on both overall soil quality and crop performance.These findings provide valuable insights into optimizing biochar application strategies under different soil pH conditions,thereby enhancing soil restoration efforts,promoting sustainable cucumber production,and opening new avenues for developing climate-smart agricultural systems in the context of global climate change.However,in order to translate these findings into practical applications,further research is needed,including large-scale field experiments and comprehensive economic assessments under diverse climatic and soil conditions to validate the scalability and economic viability of biochar use in agriculture. 展开更多
关键词 optimal biochar application rate plant growth plant performance index soil amendment soil degradation soil quality index sustainable agriculture
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Hetero-cross-linking-induced phase separation strategy for high performance dielectric elastomers 认领 引用
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作者 Xin Wang Li Zhang 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第3期1-4,共4页
Dielectric elastomers are polymers capable of large deformations,rapid responses,and high energy density under electrical stimulation[1],making them among the most promising materials for soft robotics-a field with br... Dielectric elastomers are polymers capable of large deformations,rapid responses,and high energy density under electrical stimulation[1],making them among the most promising materials for soft robotics-a field with broad applications in wearable assistive devices,biomedical rehabilitation,exploration in confined spaces,and human-machine interaction[2].The core challenge for advancing dielectric elastomers lies in further enhancing the output performance.From the perspective of optimizing the intrinsic properties of materials,improving the electromechanical sensitivity(termed asεr Y,which is proportional to deformation ability(z∝εr Y))represents a primary approach,i.e.increasing the relative dielectric constant(εr)or reducing the Young's modulus(Y).Despite advances achieved by increasing the relative dielectric constant through the incorporation of chemical fillers,chemical modifications,or elastomer network optimization,or to improve output performance by reducing the Young's modulus[3],the achieved electromechanical sensitivity remains constrained below 110 MPa−1.The challenge resides in mutually dependent tradeoffs among Young's modulus,breakdown electric field,and dielectric constant.Therefore,significantly improving the electromechanical sensitivity through novel material modification and fabrication strategies to overcome the bottleneck in output performance remains a challenge in the field. 展开更多
关键词 hetero cross linking relative dielectric constant high performance dielectric elastomers induced phase separation electromechanical sensitivity dielectric elastomers optimizing intrinsic propert wearable assistive devicesbiomedical rehabilitationexploration confined spacesand
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Correction to High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen Oxidation 认领 引用
20
《Energy & Environmental Materials》 SCIE EI CAS CSCD 2025年第4期296-296,共1页
P.Li,J.Zhong,Y.Fu,Z.Du,L.Jiang,Y.Han,J.Luxa,B.Wu,Z.Sofer,Q.Wei,W.Yang.High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen ... P.Li,J.Zhong,Y.Fu,Z.Du,L.Jiang,Y.Han,J.Luxa,B.Wu,Z.Sofer,Q.Wei,W.Yang.High-Performance Anion Exchange Membrane Fuel Cells Enabled by Nitrogen Configuration Optimization in Graphene-Coated Nickel for Enhanced Hydrogen Oxidation.Energy Environ.Mater.2024,7,e12716. 展开更多
关键词 enhanced hydrogen oxidation nitrogen configuration optimization anion exchange membrane fuel cells high performance anion exchange membrane fuel cells graphene coated nickel
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