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Ablation loading efficiency of carbon nanostructured foams produced with the pulsed laser deposition technique 认领 引用
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作者 M.Cipriani A.Maffini +10 位作者 D.Orecchia M.S.Galli De Magistris V.Ciardiello M.Scisciò P.Andreoli G.Cristofari E.Di Ferdinando V.P.Loschiavo D.Davino M.Passoni F.Consoli 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第4期80-90,共11页
Porous materials have particular advantages for a variety of applications in inertial confinement fusion.To identify suitable new materials for these applications,it is important to investigate their interaction with ... Porous materials have particular advantages for a variety of applications in inertial confinement fusion.To identify suitable new materials for these applications,it is important to investigate their interaction with high-power lasers and the associated plasma evolution.In this work,we report on the results of an experimental campaign performed at the ABC laser facility,employing carefully characterized nanostructured carbon foams obtained with the pulsed laser deposition technique.The enhancement of the ablation loading due to the foam buffer is evaluated by comparing the volume of the crater left after the interaction among different samples.Particular foam parameters and morphology are found to increase the ablation loading by producing a larger crater volume.Visible side-on streak camera images confirm these results.The absorption efficiency is investigated by time-resolved measurement of the laser light collected by focusing lenses and acquired by two fast photodiodes. 展开更多
关键词 loading efficiency ablation pulsed laser deposition porous materials carbon nanostructured foams identify suitable new materials pulsed laser deposition techniquethe enhancement abla
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NaNO2-loaded mesoporous MgO for high-efficiency CO2 capture:Synthesis,characterization and novel mechanistic insights 认领 引用
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作者 Yulian Wang Jiayi Liu +7 位作者 Jinze Song Junze Gu Binyan Wang Rui Guan Keqing Li Wanzhong Yin Haoran Sun Huili Han 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2026年第4期887-902,共16页
The development of efficient CO2 adsorbents is critical for achieving net-zero targets.MgO represents a promising solid adsorbent for CO2 capture,yet its limited specific surface area and insufficient active sit... The development of efficient CO2 adsorbents is critical for achieving net-zero targets.MgO represents a promising solid adsorbent for CO2 capture,yet its limited specific surface area and insufficient active sites restrict its adsorption capacity under moderate temperature conditions.A rod-like anhydrous MgCO3 precursor was hydrothermally synthesized and calcined at 500℃ for 3 h to obtain porous MgO(184.9 m2g-1,0.38 cm3/g),which was then modified with 20% NaNO2(by mole) via impregnation.This adsorbent achieved an adsorption capacity of 12.6 mmol g-1after 120 min under a pure CO2 atmosphere at 325℃.Comprehensive characterization reveals that NaNO2 modification leads to the NaNO3 and Na2 CO3 formation on the MgO surface during calcination.The introduced NaNO3 effectively promotes oxygen vacancy formation,while the generated Na2 CO3 serves as heterogeneous nucleation sites,collectively reducing the reaction energy barrier and enhancing interfacial mass transfer.This synergistic effect facilitates the MgCO3 formation followed by its conversion to the thermodynamically more stable Na2Mg(CO3)2.Kinetic studies elucidate that adsorption is dominated by surface chemical reactions and diffusion mechanisms at different stages.These fundamental insights into the adsorption mechanisms of nitrite-modified MgO provide valuable guidance for the rational design of advanced MgO-based CO2 adsorbents with enhanced performance. 展开更多
关键词 CO2capture MgO-based adsorbents NaNO2loading NaNO3and Na2CO3 Synergistic effect
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Design and optimization of a high-efficiency current-biased reverse load modulated power amplifier with impedance and performance constraints 认领 引用
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作者 Zhongpeng NI Heng ZHANG +4 位作者 Jing XIA Wence ZHANG Wa KONG Chao YU Xiaowei ZHU 《ENGINEERING Information Technology & Electronic Engineering》 SCIE EI CSCD 2026年第1期71-79,共9页
We propose an optimization method based on evolutionary computation for the design of broadband high-efficiency current-biased reverse load-modulation power amplifiers(CB-RLM PAs).First,given the reverse load-modulati... We propose an optimization method based on evolutionary computation for the design of broadband high-efficiency current-biased reverse load-modulation power amplifiers(CB-RLM PAs).First,given the reverse load-modulation characteristics of CB-RLM PAs,a comprehensive objective function is proposed that combines multi-state impedance trajectory constraints with in-band performance deviations.For the saturation and 6 dB power back-off(PBO)states,approximately optimal impedance regions on the Smith chart are derived using impedance constraint circles based on load-pull simulations.These regions are used together with in-band performance deviations(e.g.,saturated efficiency,6 dB PBO efficiency,and saturated output power)for matching network optimization and design.Second,a multi-objective evolutionary algorithm based on decomposition with adaptive weights,neighborhood,and global replacement is integrated with harmonic balance simulations to optimize design parameters and evaluate performance.Finally,to validate the proposed method,a broadband CB-RLM PA operating from 0.6 to 1.8 GHz is designed and fabricated.Measurement results show that the efficiencies at saturation,6 dB PBO,and 8 dB PBO all exceed 43.6%,with saturated output power being maintained at 40.9–41.5 dBm,which confirms the feasibility and effectiveness of the proposed broadband high-efficiency CB-RLM PA optimization and design approach. 展开更多
关键词 Current-biased reverse load-modulation Broadband High efficiency Power amplifier Optimization
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Dual-mode orthogonalDoherty power amplifier with efficiency enhancement and load mismatch adaptability 认领 引用
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作者 Bingtao GAO Ruibin GAO +4 位作者 Lei WANG Jian LIU Mingyu LI Jingzhou PANG Yi JIN 《ENGINEERING Information Technology & Electronic Engineering》 SCIE EI CSCD 2026年第6期91-104,共14页
This study proposes an efficiency-enhanced dual-mode orthogonal Doherty power amplifier(ODPA)architecture.The operation theory,design process,and implementation of the proposed ODPA are introduced in detail.By introdu... This study proposes an efficiency-enhanced dual-mode orthogonal Doherty power amplifier(ODPA)architecture.The operation theory,design process,and implementation of the proposed ODPA are introduced in detail.By introducing an orthogonal architecture with control signal power injection and incorporating a modified output matching network,the efficiency of Doherty power amplifiers under active load modulation can be enhanced.Furthermore,owing to the additional degrees of freedom provided by the orthogonal architecture,which enables independent amplitude and phase control and dynamic reshaping of the load modulation trajectories,and the dual-mode reciprocal bias configuration,the proposed ODPA exhibits high adaptability to load mismatch.To validate the proposed architecture,a 2.1-GHz dual-mode ODPA is designed and fabricated.With a matched load,the fabricated dual-mode ODPA exhibites over 60%drain efficiency throughout the power range from 6-dB output back-off(OBO)to saturation.For mismatched loads with a 2:1 voltage standing wave ratio,a saturated output power of 42.8–44.6 dBm and OBO efficiency of 47.2%–58.1%are obtained through mode reconfiguration. 展开更多
关键词 Doherty power amplifier Dual mode High efficiency Load mismatch Orthogonal Reciprocal bias
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Energy efficiency mapping-based dual-loop anti-disturbance control for active load-sensitive drive system 认领 引用
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作者 Quanrun MOU Xiaochao LIU +5 位作者 Zhenyu WANG Zhongyi QIU Weizhi QIAO Jing YAO Pengyuan ZHANG Zongxia JIAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第3期134-148,共15页
With the continuous development of science and technology and the growing severity of energy issues,load-sensitive drive systems have attracted significant attention in the electro–hydraulic servo field due to their ... With the continuous development of science and technology and the growing severity of energy issues,load-sensitive drive systems have attracted significant attention in the electro–hydraulic servo field due to their high energy efficiency.Currently,most research primarily focuses on introducing load-sensitive valves to achieve load-following through hydraulic-mechanical feedback.This approach has partially achieved the energy-saving goal,but issues such as reduced dynamic response speed and limited load-sensitive range due to mechanical structures remain.This paper proposes an active load-sensitive variable displacement drive system that no longer relies on mechanical structures for load-sensitive adjustment.And multiple energy efficiency mapping relationships are designed to complete the system's load-sensitive adjustment,thereby reducing throttling losses.Additionally,a dual-loop anti-disturbance control method based on energy efficiency mapping is proposed.An appropriate Lyapunov function is selected to prove that the control system ultimately tends to be bounded and stable,successfully solving the multiplicative nonlinear coupling control problem caused by the variable mechanism,and improving the system's position control accuracy.Experimental results show that under this control method,the active loadsensitive drive system can reduce flow by up to 60 % compared to the traditional fixed displacement hydraulic motor drive system.Compared to conventional PID control,the proposed method can improve control accuracy by up to 50 %,effectively reducing energy consumption while improving the position control accuracy of the active load-sensitive variable motor drive system. 展开更多
关键词 Electro-hydraulic drive system Active load-sensitive drive system Energy efficiency mapping Position control Adaptive control
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Energy-Efficient and Load-Balanced Edge-Driven Vehicular Network Using Intelligent Task Offloading 认领 引用
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作者 Salahuddin Khalid Haseeb +2 位作者 Mansoor Nasir NZ Jhanjhi Mamoona Humayun 《Computers, Materials & Continua》 SCIE EI 2026年第7期2032-2046,共15页
Intelligent Transportation System(ITS)interconnects smart technologies for the advancement in communication and autonomous decision making in vehicle interactions.It manages traffic control infrastructure,analyses roa... Intelligent Transportation System(ITS)interconnects smart technologies for the advancement in communication and autonomous decision making in vehicle interactions.It manages traffic control infrastructure,analyses road conditions,and supports cooperative awareness in a crucial environment.The sensors continuously collect real-time vehicle data,process it,and forward it to analysis servers to predict the behavior of Vehicular Ad hoc Networks(VANETs).Many approaches have been proposed to address research challenges in routing and improve communication for vehicle-to-vehicle(V2V)and vehicle-to-infrastructure(V2I)systems.However,due to dynamic topology,the network becomes disturbed and loses established connections,leading to instability in data transmission against unpredictable behavior of the network.This research presents a framework,referred to as Energy Efficient Load Balanced Edge-Driven Vehicular Networks(EELB-EVN),that aims to attain load-balanced communication across vehicles and the interconnected infrastructure,thereby preventing congestion and reducing computational cost.In addition,an Intelligent offloading technique is developed using the Analytical Hierarchy Process(AHP)to reduce the additional overhead on the devices,thus enabling energy-aware and latency-sensitive vehicular communication.Furthermore,trustworthiness strategies are explored to enhance reliability and ensure the credibility of information.The simulation tests revealed the significance of the proposed framework compared to related schemes in terms of energy consumption and latency by 20%to 25%,task success rate and network throughput by 30%to 40%,and computational complexity by 33%across dynamic vehicular scenarios. 展开更多
关键词 Internet of Things vehicular networks edge computing trustworthiness energy efficiency
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Multi-pass intermittent local loading process of large-scale rib-web component:Forming characteristics and implementing apparatus 认领 引用 被引量：3
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作者 Dawei ZHANG Peng DONG +2 位作者 Jingxiang LI Zijian YU Shengdun ZHAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第1期601-625,共25页
The multi-pass intermittent local loading process,which features a more flexible processing path,can further enhance the second material distribution during local loading,improve the formability of components,and redu... The multi-pass intermittent local loading process,which features a more flexible processing path,can further enhance the second material distribution during local loading,improve the formability of components,and reduce forming loads.However,the absence of compatible forming equipment makes it difficult to control the constraint in the unloaded zones during the forming process.This difficulty complicates coordination and control of deformation,particularly for asymmetric rib-web components.Additionally,the current implementation involves multi-fire heating,a long process flow,and high energy consumption,which limits the popularization and application of the local loading process.In this study,a new multi-pass local loading hydraulic forming apparatus that can quickly and reliably switch between heavy-load deformation and low-load constraint for different local loading sub-dies was developed.A 10-tonne laboratory prototype was developed,and the forming characteristics during the forming process as well as the response characteristics of the hydraulic system during the multi-pass intermittent local loading of rib-web component were investigated using numerical simulations and physical experiments.Results indicated that,compared to a whole loading process with the same initial geometry of billet,the total forming load(i.e.,the sum of loaded and restrained loads)is reduced by more than 40%with the local loading process,and by nearly 50%with multi-pass local loading.The multi-pass local loading process allows for more effective control of material flow compared to single-pass local loading,leading to improved cavity filling and reduced flow line disturbance.For a large-scale,complex titanium alloy bulkhead,the cavity filling problem was addressed by optimizing the multi-pass local loading path with an unequal thickness billet.The dynamic performance of the multi-pass local loading hydraulic system was found to be robust,with stable pressure transitions during motion and load switching for the sub-die(s).The dynamic characteristic of the hydraulic cylinder when switching from non-moving/unloaded state to a moving/loading state are consistent whether a load is present or not.However,the dynamic characteristics differ when switching from a moving/loading state to non-moving/unloaded state,showing opposite behavior.The developed hydraulic drive mechanism provides a way for implementation of multi-pass local loading without auxiliary operation and extra heating.The results of the study provide a foundation for the industrial production of large-scale,complex components with reduced force requirement and low-energy consumption. 展开更多
关键词 Forming characteristics Hydraulic system Intermittent local loading process Material flow Rib-web component
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Dense planting and nitrogen fertilizer management improve dripirrigated spring maize yield and nitrogen use efficiency in Northeast China 认领 引用 被引量：3
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作者 Liang Fang Guoqiang Zhang +11 位作者 Bo Ming Dongping Shen Zhen Wang Linli Zhou Tingting Zhang Zhongyu Liang Jun Xue Ruizhi Xie Peng Hou Keru Wang Jianquan Ye Shaokun Li 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第4期1443-1450,共8页
Farmers in China often use nitrogen(N)fertilizers to ensure adequate crop growth.However,inappropriate applications have increased the risk of environmental pollution,lowered maize yields,and reduced profits for farme... Farmers in China often use nitrogen(N)fertilizers to ensure adequate crop growth.However,inappropriate applications have increased the risk of environmental pollution,lowered maize yields,and reduced profits for farmers.Proper N fertilizer management is crucial for improving yield and nitrogen use efficiency(NUE).This study conducted a three-year experiment involving nine N treatments(0,45,90,135,180,225,270,315,and 360 kg ha-1)on a field under nitrogen fertilizer precision management(NFPM)in Northeast China.The results were compared with studies published within the past decade that analyzed yield and dry matter(DM)content under two management practices in Northeast China:conventional nitrogen fertilization management(CNFM)and water-saving fertilization management(WSFM).The findings reveal that maize yield increases with rising N application rates up to 270 kg ha-1,after which yield decreases.The kernel number(KN)and kernel weight(KW)of maize grown under NFPM were 13.7 and 14.7%higher than those grown under WSFM,respectively.Furthermore,they surpassed crops grown under CNFM by 38.4 and 21.2%,respectively.The maximum total yield of the NFPM treatment was 41.8 and 78.8%higher than under WSFM and CNFM,respectively.In addition,compared with CNFM and WSFM,NFPM significantly increased NUE across the various N-level treatments.Optimizing nitrogen management can help farmers to achieve higher yields and promote sustainable agricultural development. 展开更多
关键词 maize yield dense planting drip irrigation N use efficiency N fertilizer management
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Nanostructure-dependent colouration efficiency of electrochromic coatings using 0D,1D,and 2D WO3 for smart windows 认领 引用 被引量：3
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作者 Mahnaz Dadkhah Md Julker Nine +2 位作者 Kosala Purasinhala Gurleen Singh Sandhu Dusan Losic 《Nano Materials Science》 EI CAS CSCD 2026年第2期255-263,共9页
Towards the development of highly efficient electrochromic coatings,the crystallinity,morphology(e.g.size and shape)of electrochromic nanomaterials,and their charge insertion capacities play a significant role.Herein,... Towards the development of highly efficient electrochromic coatings,the crystallinity,morphology(e.g.size and shape)of electrochromic nanomaterials,and their charge insertion capacities play a significant role.Herein,we report the structure-dependent colouration effciency in electrochromic coatings based on the use of 0D,1D and 2D tungsten trioxide(WO3)nanostructures.A series of WO3with different nanostructures were prepared and used as working electrodes to fabricate electrochromic devices for smart windows applications.Facile spray coating was applied on fluorine-doped tin oxide(FTO)substrate to make~70%transparent working electrodes to investigate their charge insertion capacities,electrochromic active surface area,and colouration efficiency.Results showed that the 2D WO3nanoflakes displayed the highest diffusion coefficient for the intercalation of 1.52×10-10cm2/s with an increased electrochemical active surface area of 25.10 mF/cm2,a large modulation of optical reflectance(42.63%)with 3.79 s shorter response time for bleaching and a greater colouration efficiency(CE)value(89.29 cm2/C)at 700 nm compared to the CE value for 1D WO3(of 22 cm2/C)and 0D WO3(8 cm2/C).The outcome of this study provides a new insight and valuable contribution to design an efficient electrochromic coating by controlling and optimising the nanostructures of selective electrochromic materials. 展开更多
关键词 Electrochromic devices Smart window WO3 nanostructures Colouration efficiency Spray coating
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Single-time fertilization with controlled release blended fertilizer optimizes soil nitrogen distribution and root characteristics to increase conventional japonica rice(Oryza sativa L.)grain yield and nitrogen use efficiency 认领 引用 被引量：2
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作者 Yuhui Wang Jie Sun +13 位作者 Shen Gao Bin He Zhengyang Wu Wenjun He Weike Tao Xin’ao Tang Zhi Geng Weiwei Li Fei Yang Zhengrong Jiang Zhenghui Liu Yanfeng Ding Soulaiman Sakr Ganghua Li 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第7期2771-2782,共12页
Single-time fertilization(STF)with controlled release blended fertilizer(CRBF)improves grain yield and nitrogen use efficiency(NUE)in rice production.However,the impact of soil nitrogen(N)distribution and root growth ... Single-time fertilization(STF)with controlled release blended fertilizer(CRBF)improves grain yield and nitrogen use efficiency(NUE)in rice production.However,the impact of soil nitrogen(N)distribution and root growth on rice yield and NUE under STF with CRBF remains unclear.Here,a two-year field experiment investigated the effects of two fertilizer types(normal urea(U)and CRBF)and two single-time fertilization methods(broadcast and side-deep fertilization)on the soil N distribution,plant N uptake,root characteristics,grain yield,and NUE.The results showed that CRBF under STF increased the averages of plant dry matter accumulation,N uptake,grain yield,nitrogen recovery efficiency(NRE),and nitrogen agronomic efficiency(NAE)by 8.29,21.85,10.57,79.28,and 74.8%compared to the other treatments,respectively.Side-deep fertilization with CRBF further increased NUE by 12.78%compared to broadcast.Moreover,CRBF under STF increased the leaf SPAD value and glutamine synthetase(GS)/glutamine oxoglutarate aminotransferase(GOGAT)activity by 5.93 and 25.58%,respectively.CRBF under STF increased the soil inorganic N concentration and showed a“rising early and stabilizing later”pattern.In addition,CRBF under STF improved rice root growth and increased the averages of root biomass,total root number,root average diameter,total root length,total root surface area,and total root volume by 28.30,28.56,18.64,13.38,35.26,and 37.06%,respectively,at the tillering and heading stages.Partial least squares path modeling indicated that CRBF under STF increased the soil inorganic N concentration which improved root morphology,thereby increasing N uptake and improving the rice yield and NUE.Taken together,our findings show that CRBF with single-time fertilization is the preferred N fertilizer strategy for achieving high yield and efficiency in rice,and that side-deep fertilization is the optimal fertilization method. 展开更多
关键词 yield nitrogen use efficiency controlled release blended fertilizer soil nitrogen distribution root
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Integrated scheduling optimization of carrier-based aircraft deck operation for comprehensive efficiency 认领 引用 被引量：1
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作者 Wei Han Haonan Wu +2 位作者 Fang Guo Liangliang Cheng Xichao Su 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第8期190-215,共26页
An aircraft carrier's formidable combat capability relies on sorties,with efficient deck operations as the core to enhance sortie and recovery capabilities.First,this study develops an integrated mathematical mode... An aircraft carrier's formidable combat capability relies on sorties,with efficient deck operations as the core to enhance sortie and recovery capabilities.First,this study develops an integrated mathematical model for carrier-based aircraft deployment,sortie,and maintenance scheduling to assist decision-makers in formulating sorties and coordinating resource allocation(e.g.,personnel,equipment),aiming to optimize the comprehensive effectiveness index of integrated carrier-based aircraft scheduling.Second,a hybrid multi-layer coded genetic algorithm(HMCGA)integrated with heuristic rules is proposed;it uses four-layer coding to resolve inter-sub-process coupling and supports integrated carrier-based aircraft scheduling,covering hangar transfer,deck transfer,aircraft maintenance support,and sortie execution.Then,case simulation shows the proposed model and algorithm effectively improve operational effectiveness and ensure accuracy.Finally,comparisons of 50 independent simulation results(PSO,DE,WOA,CPLEX)effectively validate HMCGA's superiority and universality in solving integrated carrier-based aircraft scheduling problems across fleet scales,further confirming the model and algorithm's reliability. 展开更多
关键词 Comprehensive efficiency Hybrid multi-layer coding genetic algorithm Scheduling optimization Integrated scheduling
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Multi-scale quantitative study on cemented tailings and waste-rock backfill under different loading rates 认领 引用 被引量：1
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作者 YIN Sheng-hua CHEN Jun-wei +4 位作者 YAN Ze-peng ZENG Jia-lu ZHOU Yun YANG Jian ZHANG Fu-shun 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第1期357-374,共18页
The development of metallic mineral resources generates a significant amount of solid waste,such as tailings and waste rock.Cemented tailings and waste-rock backfill(CTWB)is an effective method for managing and dispos... The development of metallic mineral resources generates a significant amount of solid waste,such as tailings and waste rock.Cemented tailings and waste-rock backfill(CTWB)is an effective method for managing and disposing of this mining waste.This study employs a macro-meso-micro testing method to investigate the effects of the waste rock grading index(WGI)and loading rate(LR)on the uniaxial compressive strength(UCS),pore structure,and micromorphology of CTWB materials.Pore structures were analyzed using scanning electron microscopy(SEM)and mercury intrusion porosimetry(MIP).The particles(pores)and cracks analysis system(PCAS)software was used to quantitatively characterize the multi-scale micropores in the SEM images.The key findings indicate that the macroscopic results(UCS)of CTWB materials correspond to the microscopic results(pore structure and micromorphology).Changes in porosity largely depend on the conditions of waste rock grading index and loading rate.The inclusion of waste rock initially increases and then decreases the UCS,while porosity first decreases and then increases,with a critical waste rock grading index of 0.6.As the loading rate increases,UCS initially rises and then falls,while porosity gradually increases.Based on MIP and SEM results,at waste rock grading index 0.6,the most probable pore diameters,total pore area(TPA),pore number(PN),maximum pore area(MPA),and area probability distribution index(APDI)are minimized,while average pore form factor(APF)and fractal dimension of pore porosity distribution(FDPD)are maximized,indicating the most compact pore structure.At a loading rate of 12.0 mm/min,the most probable pore diameters,TPA,PN,MPA,APF,and APDI reach their maximum values,while FDPD reaches its minimum value.Finally,the mechanism of CTWB materials during compression is analyzed,based on the quantitative results of UCS and porosity.The research findings play a crucial role in ensuring the successful application of CTWB materials in deep metal mines. 展开更多
关键词 cemented backfill waste rock loading rate multi-scale analysis mercury intrusion porosimetry pore structure micromorphology
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Effects of Temperature,Loading Frequency,Stress Amplitude,and Stress Ratio on the Low-Cycle Fatigue Behavior of FeMnSiCrNi Shape Memory Alloys 认领 引用 被引量：1
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作者 Bo Xu Beihai Huang +4 位作者 Sen Tang Xiang Xu Huabei Peng Chong Wang Qingyuan Wang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2026年第2期133-151,共19页
FeMnSi-based shape memory alloys(SMAs)have great applied potential to large-scale structures in civil engineering,especially as an aseismic structural material.Low-cycle fatigue performance is one of the most importan... FeMnSi-based shape memory alloys(SMAs)have great applied potential to large-scale structures in civil engineering,especially as an aseismic structural material.Low-cycle fatigue performance is one of the most important properties of FeMnSi-based SMA aseismic materials.However,the low-cycle fatigue behavior of such SMAs,especially the stress-controlled low-cycle fatigue behavior(with ratchetting effect),has not been clearly understood.In this work,the low-cycle fatigue behavior of the FeMnSiCrNi SMAs subjected to stress-controlled cyclic tension–compression loads is investigated,and the effects of temperature,loading frequency,stress amplitude,and stress ratio are addressed.By analyzing the cyclic stress–strain response,fatigue fracture surface morphology,dissipation energy,ratchetting strain,and equivalent damping ratio,the mechanisms behind the temperature-,loading frequency-,stress amplitude-,and stress ratio-dependent low-cycle fatigue behavior are discussed.The results show that the plasticity,martensitic transformation,and/or the ratchetting strain caused by their tension–compression asymmetry are the decisive factors affecting the low-cycle fatigue behavior of FeMnSiCrNi SMAs. 展开更多
关键词 FeMnSiCrNi shape memory alloy Low-cycle fatigue behavior Temperature Loading frequency Stress amplitude Stress ratio
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Optimizing nitrogen application and planting density improves yield and resource use efficiency via regulating canopy light and nitrogen distribution in rice 认领 引用 被引量：1
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作者 Zichen Liu Liyan Shang +8 位作者 Shuaijun Dai Jiayu Ye Tian Sheng Jun Deng Ke Liu Shah Fahad XiaohaiTian Yunbo Zhang Liying Huang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第1期81-91,共11页
Coordinating light and nitrogen(N)distribution within a canopy is essential for improving rice yield and resource use efficiency.However,limited research has examined light and N distribution in response to planting d... Coordinating light and nitrogen(N)distribution within a canopy is essential for improving rice yield and resource use efficiency.However,limited research has examined light and N distribution in response to planting density and N rate,and their relationships with grain yield,radiation use efficiency(RUE),and N use efficiency for grain production(NUEg)in rice.A two-year field experiment was conducted with two hybrid varieties under three N levels,0 kg ha-1(N1),90 kg ha-1(N2)and 180 kg ha-1(N3),and two planting densities,22.2 hills m-2(D1)and 33.3 hills m-2(D2).Results showed 3.4%higher yield and 4.4%higher NUEg under N2D2 compared with N3D1.The extinction coefficient for N(KN)and light(KL)and their ratio(KN/KL)at heading stage were significantly influenced by N rate,planting density,and their interaction.KNdecreased with the increase of N input or planting density.Compared to N1,KNdecreased by 43.5 and 58.8%under N2 and N3,respectively,while KNunder D2 decreased by 16.0%compared to D1.Higher KLand KN/KLvalues occurred under low N rates,with opposite trends under high N rates.Increased planting density led to decreased KLand KN/KLvalues.N2D2 demonstrated higher KLand KN,and thus comparable KN/KL,compared to N3D1.Correlation analysis revealed KLnegatively correlated with RUE,while KNand KN/KLpositively correlated with NUEg.These findings indicate that increasing planting density under reduced N input could maintain rice yield while enhancing resource use efficiency through regulation of canopy light and N distribution. 展开更多
关键词 canopy light and N distribution nitrogen input planting density high yield and high efficiency hybrid rice
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The stress transfer mechanism of nacre-like composites under off-axis tensile loading 认领 引用
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作者 Peng Jiang Guangming Xia +5 位作者 Shi Bai Dongfang Xu Jixiang Qi Xun Xiong Xianben Ren Ying Li 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期466-472,共7页
Nacre exhibits excellent mechanical properties attributed to the staggered alignment of inorganic minerals and bio-organic materials.This study aims to understand how stress transfers from macro-scale loading conditio... Nacre exhibits excellent mechanical properties attributed to the staggered alignment of inorganic minerals and bio-organic materials.This study aims to understand how stress transfers from macro-scale loading conditions to the staggered architecture,revealing multiple stress transfer modes in nacre-like composites under off-axis tensile loading conditions.We propose an innovative off-axis tension-shear chain model,which predicts the trend of the equivalent modulus.Systematic optimization reveals a counter-intuitive result:the equivalent modulus at a certain angle can be smaller than the equivalent moduli in both principal directions,and this phenomenon differs from the monotonic behavior commonly observed in continuous fiber composite materials. 展开更多
关键词 Composites Load transfer Nacre Bioinspired Architected materials
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Ag-loading boosts full-spectrum photocatalysis performance of Bi2 WO6:Yb3+,Er3+ 认领 引用
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作者 Xuemei Lu Xin Guo +7 位作者 Xiaoxuan Fan Wen Liu Xu Gao Hainan Li Jialin Wang Yang Zhao Jiwei Wang Kexin Wang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第5期1453-1463,共11页
Currently,one of the main factors limiting the performance of photocatalytic technology is the suboptimal utilization efficiency of the infrared region in sunlight spectrum.Although rare earth ion doping can improve l... Currently,one of the main factors limiting the performance of photocatalytic technology is the suboptimal utilization efficiency of the infrared region in sunlight spectrum.Although rare earth ion doping can improve light absorption of photocatalysts in the infrared region to some extent,it is still restricted by a narrow absorption cross-section and relatively low photocatalytic efficiency under infrared light.In this work,a full-spectrum photocatalyst based on Bi2 WO6:Yb3+,Er3+/Ag composite was prepared.Ag loading formed a Schottky junction on the surface of Bi2 WO6 and introduced the localized surface plasmon resonance(LSPR)effect.Their synergistic interaction optimized the band structure and the separation efficiency of photogenerated charge carriers.Hot electron injection induced by the LSPR effect can simultaneously enhance the mutually independent photocatalytic processes driven by visible light and near-infrared light,thereby achieving an overall boost in full-spectrum photocatalytic performance.It enables Bi2 WO6:Yb3+,Er3+/Ag composite to efficiently address various refractory pollutants and complex conditions.Bi2 WO6:Yb3+,Er3+/Ag composite exhibits outstanding photodegradation performance for a diverse mixture of antibiotics,including tetracycline hydrochloride,norfloxacin,ciprofloxacin,and levofloxacin in real water samples under simulated sunlight irradiation.This work paves a way for the development of green,efficient,and sustainable environmental remediation technologies. 展开更多
关键词 Photocatalysis Precious metal loading Degradation Rare earth doping Upconversion
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Thallium(Ⅰ)retention in porous media is restricted by elevated Mn(Ⅱ)and Fe(Ⅲ)loadings:Insights into suitability between media and microbial communities 认领 引用
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作者 Yuheng Huang Xiaoling Zhang +3 位作者 Ziqiang Liu Xiaoliu Huangfu Qiang He Suyan Pang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第6期665-675,共11页
In tailings permeated by leachate containing thallium(Tl),manganese oxides(MnO x)are recognized as critical substances in immobilizing Tl and preventing its further migration into groundwater.However,dissolved Mn(... In tailings permeated by leachate containing thallium(Tl),manganese oxides(MnO x)are recognized as critical substances in immobilizing Tl and preventing its further migration into groundwater.However,dissolved Mn(Ⅱ)and Fe(Ⅲ)also exist in micro-oxic environments.The effects and mechanisms of the increased levels of these coexisting ions,driven by environmental processes such as rainfall leaching,on Tl(Ⅰ)retention remain largely unclear.This study established two systems using natural manganese sand and limestone sand as porous media,demonstrating that the elevated Mn(Ⅱ)/Fe(Ⅲ)loadings weakened Tl(Ⅰ)retention.Redundancy analysis identified media type and depth as primary factors shaping microbial communities,which subsequently influenced Tl(Ⅰ)immobilization.Manganese sand exhibited superior recovery capacity compared to limestone sand under higher Mn(Ⅱ)and Fe(Ⅲ)loadings.Co-occurrence network analyses revealed that media-microorganism suitability governs microbial community structure and heavy metal retention efficiency.Hydraulic impact and dissolved organic/inorganic cations reduced MnO x content,while the higher retention capacity of manganese sand was attributed to the presence of microorganisms with higher activity and abundance,as well as an increased abundance of microbial-generated MnO_( x).This study offers novel insights into the mechanisms underlying Tl(Ⅰ)retention in tailings,which is crucial for comprehending its environmental fate. 展开更多
关键词 Thallium Restricted retention Porous media Elevated loadings Co-occurrence network
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Straw incorporation surpasses mulching for wheat yield and water use efficiency under deficit irrigation on the North China Plain 认领 引用
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作者 Fuying Liu Ling Liu +4 位作者 Rui Zong Yanli Fan Mingming Zhang Xianghao Hou Quanqi Li 《The Crop Journal》 SCIE CSCD 2026年第4期1454-1464,共11页
In the water-scarce North China Plain(NCP),choosing between straw mulching(SM)for surface conservation and straw incorporation(SI)for soil amelioration is a critical agricultural dilemma.However,their effects on soil ... In the water-scarce North China Plain(NCP),choosing between straw mulching(SM)for surface conservation and straw incorporation(SI)for soil amelioration is a critical agricultural dilemma.However,their effects on soil water dynamics and crop productivity under different irrigation levels remain unclear.We conducted a two-year field experiment comparing SI and SM under three irrigation levels in winter wheat:no irrigation(I0),60 mm irrigation at jointing(I60),and 60 mm irrigation at both jointing and heading(I60+60).Soil water dynamics were monitored,field-scale evapotranspiration(ET)was estimated using a water-balance approach,and aboveground dry matter,yield components,and water use efficiency(WUE)were measured.SM maintained higher topsoil water content early in the season,whereas SI generally showed greater changes in soil water storage(ASWS)and higher mean daily ET.Despite weaker early-stage surface water conservation,SI increased aboveground dry matter and grain yield by 5.2%-5.6%,resulting in 3.4%-4.0% higher WUE,with the advantage reaching 4.8%-4.9% under I60.This advantage was associated with improved early sink establishment(higher spike numbers)and superior ET conversion efficiency,requiring 18.8% less ET per unit dry matter increment.Under160+60,the relative advantage of SI narrowed,indicating diminishing marginal yield response to additional ET.A conceptual model was developed to synthesize these straw return-irrigation interactions.We identified SI-I60+60(highest yield)and SI-I60(highest WUE)as optimal coupling modes,and recommend SI-I60 as the optimal management practice for this region,offering a practical strategy for winter wheat production under water-limited conditions. 展开更多
关键词 Evapotranspiration Water use efficiency Straw return Irrigation Winter wheat
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A dual capillary contraction-induced prestressing strategy for high-loading Si/C anode with long cycling stability 认领 引用
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作者 Yanpeng Wang Fenghua Liu +6 位作者 Yusheng Luo Zhaoyang Song Zezhong Li Xiaomei Chen Shuang Liu Ke Gong Wei Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第6期287-295,I0008,共9页
Silicon(Si)is a leading anode candidate for high-energy-density lithium-ion batteries due to its exceptional theoretical specific capacity.However,its practical application is hindered by particle fracture under high ... Silicon(Si)is a leading anode candidate for high-energy-density lithium-ion batteries due to its exceptional theoretical specific capacity.However,its practical application is hindered by particle fracture under high areal loadings and the inherent trade-off between electrode density and ion transport kinetics.Herein,we propose a“dual capillary contraction”strategy to construct a dense,structurally robust silicon-based anode(Si@SA@GO).This method uses nano-CaCO3 as a sacrificial filler between graphene oxide(GO)layers,creating a“filled capillary”effect that amplifies contraction forces during initial drying.Subsequent removal of the filler generates nanopores,which then trigger an intense“hyper-contraction”driven by Young-Laplace pressure in a secondary drying stage.This cascaded process forges a pretensioned GO network that tightly confines Si nanoparticles,actively imposing compressive stress to counteract their volumetric expansion.The resulting electrode successfully resolves the conflict between density and structural stability,achieving a remarkable tap density of 0.84 g cm-3,while maintaining efficient ion transport pathways.The Si@SA@GO anode delivers an ultrahigh areal capacity of 8.5 mAh cm-2,with 75%capacity retention after 1000 cycles in the Si@SA@GO//LFP full cell.This work provides a scalable and effective route to resolve the long-standing trade-offs among density,stress,and kinetics in high-performance silicon anodes. 展开更多
关键词 Contraction Silicon anode High density High loading Lithium ion storage
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The recrystallization mechanism and its effects on texture in pre-twinned AZ31 magnesium alloy during medium-high temperature impact loading 认领 引用
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作者 Xiao Liu Xiaofeng Zhang +6 位作者 Biwu Zhu Chao Xie Bibo Hu Wenhui Liu Luoxing Li Congchang Xu Pengcheng Guo 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第1期459-475,共17页
Investigating effect of recrystallization mechanism on deformation mode and texture evolution is conducive to controlling deformation mechanism and texture in magnesium alloys under medium-high temperature impact load... Investigating effect of recrystallization mechanism on deformation mode and texture evolution is conducive to controlling deformation mechanism and texture in magnesium alloys under medium-high temperature impact loading.In the present study,a Johnson-Cook model incorporating twin strengthening was established to simulate macro-deformation,and a twinning induced recrystallization(TDRX)model and bulging recrystallization(GBBDRX)model are introduced into visco-plastic self consistant(VPSC)framework to quantitatively study the deformation mechanism of pre-twinned AZ31 magnesium alloy during medium-high temperature impact loading.Both TDRX and GBBDRX occur,with basal slip as the dominant slip system,followed by pyramidal〈c+a〉slip and prismatic slip.The dynamic recrystallization(DRX)significantly influences basal and pyramidal〈c+a〉slip systems,with minimal impact on secondary deformation mechanism.In addition,the recrystallization mechanism of grain boundary bowing increases the activity of basal slip and decreases the activity of pyramidal〈c+a〉slip.The nucleation and growth of recrystallized grains enhance basal slip activity and suppress pyramidal〈c+a〉slip,leading to the formation of a strong basal texture.As dynamic recrystallization progresses,a bimodal texture develops,characterized by a reduction in basal component pole density and a more pronounced basal slip. 展开更多
关键词 Az31 magnesium alloy Texture Deformation mode Dynamic recrystallization Impact loading
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