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Prediction method for stationary crossflow instability transition in supersonic boundary layers based on multi-layer perceptron 认领 引用 被引量：2
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作者 Lei Qiao Xi Jiang +5 位作者 Jiakun Fan Yutian Wang Lu Xie Ningjuan Dong Jiakuan Xu Junqiang Bai 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第7期36-51,共16页
Crossflow vortices induced transition is one of the most important instability types in supersonic aircraft boundary layers.While the traditional linear stability theory(LST)-based eN method demonstrates satisfactory ... Crossflow vortices induced transition is one of the most important instability types in supersonic aircraft boundary layers.While the traditional linear stability theory(LST)-based eN method demonstrates satisfactory predictive capabilities for this kind of transition,its practical implementation faces inherent limitations:the requirement of first-and second-order wallnormal derivatives of boundary layer velocityemperature profiles,the need for initial eigenvalue guesses,and the computational burden of solving eigenvalue problems.To address these challenges,this study develops a multi-layer perceptron(MLP)model tailored for linear stability analysis of three-dimensional compressible boundary layers based on the artificially defined quasi-three-dimensional non-similar boundary layer solutions.The boundary layer edge flow parameters and perturbation characteristics are mapped to eigenvalues or local growth rates of the envelop curves through fully connected layers.This architecture eliminates the need for computing wall-normal derivatives of velocityemperature profiles,initial eigenvalue estimation,and direct eigenvalue problem solving.Extensive validation across varying operational conditions and geometries(airfoils and swept wings)demonstrates exceptional agreement between the MLP’s predictions(eigenvalues and disturbance amplification factors)and traditional LST results.Furthermore,the model’s transition prediction capability is rigorously verified using National Aeronautics and Space Administration’s supersonic swept-wing crossflow-dominated transition benchmark,incorporating both stability analysis and flight test data.Results confirm the model is an efficient and reliable computational framework for transition prediction in three-dimensional finite-span wings. 展开更多
关键词 Supersonic swept wing Boundary layer transition Crossflow instability Linear stability theory eN method Multi-layer perceptron
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Tm3+ /Dy3+ activated single-component niobate phosphors with low correlated color temperature and high thermal stability for white LEDs applications 认领 引用 被引量：1
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作者 Xin Zhang Hongqing Song +2 位作者 Ruirui Cui Min Zhang Chaoyong Deng 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第6期1740-1750,I0003,共11页
Current advancements in solid-state lighting have intensified the demand for single-component white luminescent phosphors with enhanced chromatic stability.The strategic incorporation of Tm3+ ions to compensate for... Current advancements in solid-state lighting have intensified the demand for single-component white luminescent phosphors with enhanced chromatic stability.The strategic incorporation of Tm3+ ions to compensate for the blue component in Dy3+ -doped phosphors has received widespread attention.Herein,we synthesized a series of blue-emitting Ca2GdNbO6(CGNO):xTm3+ and single-component white-light-emitting CGNO:0.03Tm3+ ,yDy3+ phosphors via the conventional high-temperature solidstate pathway.A detailed study on the phase,chemical bond states,and elemental distribution of doped ions(Tm3+ ,Dy3+ )in the CGNO lattice was conducted.The investigations demonstrate that Tm3+ emits blue light,which can effectively compensate for the insufficient blue light component in CGNO:0.03Tm3+ ,yDy3+ phosphors,making the chromaticity coordinates close to the white center area.The co-doped samples present improved color and thermal stability,and the prepared white lightemitting diodes(WLEDs)emit bright white light,which is clearly visible when illuminating objects in dark environments.These findings show that the CGNO:0.03Tm3+ ,yDy3+ are excellent singlecomponent white light-emitting materials in the field of illumination. 展开更多
关键词 Phosphor Single-phase white emission Energy transfer Thermal stability WLEDs Rare earths
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Stability analysis of soft-hard interbedded anti-inclined rock slope under rainfall based on deformation compatibility 认领 引用 被引量：1
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作者 GUO Jianjun WU Zhenwei +2 位作者 CAO Heng ZHANG Wei WANG Junjie 《Journal of Mountain Science》 SCIE CSCD 2026年第1期380-393,共14页
Rock slope instability is a prevalent geological hazard that imposes significant adverse impacts on engineering activities.Although existing studies have focused on homogeneous rock slopes,the theoretical models for q... Rock slope instability is a prevalent geological hazard that imposes significant adverse impacts on engineering activities.Although existing studies have focused on homogeneous rock slopes,the theoretical models for quantifying the stability of softhard interbedded anti-inclined slopes remain underdeveloped,primarily due to the complex force transfer mechanisms involved.This study proposed a novel theoretical model for the stability analysis of soft-hard interbedded anti-inclined slopes under rainfall conditions.The framework models stratified rock layers as layered cantilever beams with material heterogeneity.Based on the principle of deformation compatibility,it comprehensively accounted for interlayer force transfer and strength degradation resulting from differential deformations among rock layers.Furthermore,it integrated the critical instability length induced by the self-weight of rock layers to determine the fracture depth.The proposed method was validated against engineering case studies and physical model tests,with error falling within an acceptable range.Compared to existing theoretical methods,the proposed method provided a more realistic representation of the slope's stress field.The analysis results demonstrate that rainfall not only reduces the inclination angle of the failure surface but also leads to an approximate 30%decrease in the safety factor.The proposed theoretical model is particularly useful for quickly calculating the stability of soft-hard interbedded anti-inclined rock slope under rainfall conditions,compared to complex and time-consuming numerical simulation calculations. 展开更多
关键词 Soft-hard interbedded Anti-inclined slope Rainfall Stability analysis Theoretical method
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Effect of oxygen doping sources on enhancing air stability and lithium metal compatibility of Li5.5PS4.5Cl1.5electrolyte 认领 引用 被引量：1
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作者 Linfeng Peng Cong Liao +4 位作者 Jiayue Peng Shuai Chen Tianyu Lei Shijie Cheng Jia Xie 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期673-677,共5页
Oxygen(O)doping is a promising strategy for enhancing the air stability and lithium metal compatibility of sulfide solid electrolytes(SSEs).However,the impact of various O sources on the structure and properties of... Oxygen(O)doping is a promising strategy for enhancing the air stability and lithium metal compatibility of sulfide solid electrolytes(SSEs).However,the impact of various O sources on the structure and properties of SSEs remains unclear.In this study,we synthesized a series of O-doped electrolytes,Li5.5PS4.5-xOxCl1.5(LPSCOx,0.1≤x≤0.5),using Li2O and P2O5as O sources,and systematically investigated their differences in structure,air stability,and electrochemical properties.O preferentially substitutes sulfur(S)at the 16e site and begins to replace S at the 4d site once a certain O concentration is reached.Notably,the P2O5-doped electrolytes(P-LPSCOx)exhibit a greater oxygen tolerance content(0.24)at the 16e site,along with better air stability,higher ionic conductivity,and superior lithium metal compatibility.XRD,SEM,and XPS analyses reveal that the P2O5-doped electrolytes exhibit larger cell parameters,higher densification,and fewer side reactions with lithium metal compared to the Li2O-doped counterparts.This study provides valuable insights into the development of high-performance O-doped sulfide electrolytes. 展开更多
关键词 All-solid-state battery Sulfide solid electrolyte Oxygen substitution Air stability Lithium metal compatibility
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Cu/Ti-doped O3-type cathode materials for high cyclic stability of sodium-ion batteries 认领 引用 被引量：1
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作者 Jingjing Dong Liu Pei +6 位作者 Yifei Wang Yan Liu Xingliang Liu Zhidan Diao Jianling Li Yejing Li Xindong Wang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第1期306-314,共9页
The outstanding performance of O3-type NaNi1/3Fe1/3Mn1/3O2(NFM111)at both high and low temperatures coupled with its impressive specific capacity makes it an excellent cathode material for sodium-ion batte... The outstanding performance of O3-type NaNi1/3Fe1/3Mn1/3O2(NFM111)at both high and low temperatures coupled with its impressive specific capacity makes it an excellent cathode material for sodium-ion batteries.However,its poor cycling,owing to highpressure phase transitions,is one of its disadvantages.In this study,Cu/Ti was introduced into NFM111 cathode material using a solidphase method.Through both theoretically and experimentally,this study found that Cu doping provides a higher redox potential in NFM111,improving its reversible capacity and charge compensation process.The introduction of Ti would enhance the cycling stability of the material,smooth its charge and discharge curves,and suppress its high-voltage phase transitions.Accordingly,the NaNi0.27Fe0.28Mn0.33Cu0.05Ti0.06O2sample used in the study exhibited a remarkable rate performance of 142.97 mAh·g-1at 0.1 C(2.0-4.2 V)and an excellent capacity retention of 72.81%after 300 cycles at 1C(1C=150 mA·g-1). 展开更多
关键词 sodium-ion batteries Cu/Ti doping cyclic stability layered cathode material
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Surface reconstruction via rapid solution quenching to enhance structural stability of lithium-rich layered cathodes 认领 引用 被引量：1
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作者 Hailiang Chu Jiaxiao Meng +4 位作者 Longde Duan Shujun Qiu Errui Wang Fen Xu Lixian Sun 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第5期1553-1563,I0092-I0106,共11页
Lithium-rich layered oxides are prospective materials for future-generation cathodes attributable to their high specific capacity.However,significant surface instability,particularly under high-voltage operating condi... Lithium-rich layered oxides are prospective materials for future-generation cathodes attributable to their high specific capacity.However,significant surface instability,particularly under high-voltage operating conditions,leads to substantial voltage decay and dramatic capacity degradation during long-term cycling,severely limiting their widespread application.In this study,we developed a universal brine quenching strategy to construct a stabilized composite surface structure for lithium-rich layered oxides.This structure comprises an inner surface layer with a Y-doped layered structure and an outermost layer featuring a disordered rock-salt structure.Doping in the layered structure strengthens the Y-O bonds,raises the energy barrier for oxygen evolution,and significantly increases the stability of the lattice oxygen.Additionally,the disordered rock-salt surface structure reduces oxygen release during the charge and discharge cycles.Consequently,this well-designed surface structure significantly boosts the structural stability of the lithium-rich layered oxide surface,suppresses structural degradation during long-term cycling,and facilitates Li+diffusion kinetics.The improved redox activity,combined with superior structural stability,contributes to an outstanding electrochemical performance.For instance,the Y-quenched Li1.2Mn0.54Ni0.13Co0.13O2(LLO)cathode exhibited an improved discharge capacity of 283 mAh·g-1at 0.1 C and 223 mAh·g-1at 1 C,along with remarkable cyclic stability retaining 91.2% of its capacity after 300 cycles at 1 C,and a reduced voltage decay of 0.76 mV per cycle(compared to 1.16 mV per cycle for pristine LLO).This research provides valuable insights into the design and synthesis of high-energydensity lithium-rich layered oxides through a simple and cost-effective strategy. 展开更多
关键词 Li-rich layered oxides brine quenching surface structure voltage decay cycling stability
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The impact of digital technology use on relocated households'income stability in China 认领 引用 被引量：1
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作者 Mingyue Liu Wenying Zhang +1 位作者 Huanguang Qiu Xiaolong Feng 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第6期2242-2254,共13页
Ensuring the income stability of relocated households is essential for advancing rural revitalization and achieving common prosperity.While existing research has explored the impact of digital technology on income,few... Ensuring the income stability of relocated households is essential for advancing rural revitalization and achieving common prosperity.While existing research has explored the impact of digital technology on income,few studies have addressed how digital technology use affects income stability.To fill this gap,based on survey data from relocated households in 16 counties across 8 provincial-level regions in China,this study examines the impact of digital technology use on the income stability of relocated households using Ordinary Least Squares(OLS)and Propensity Score Matching(PSM).The results show that digital technology use improves both income and income stability,with stronger effects at higher levels of use.This impact is driven by better access to information acquisition and enhanced human capital.Additionally,digital technology helps stabilize the income of households facing downward volatility.The income stabilizing effect is particularly significant among relocated households in central regions,rural resettlement areas,and those with higher education levels.Furthermore,digital literacy amplifies the positive impact of digital technology on income stability.These findings offer valuable insights for policymakers aiming to promote digital technology use to ensure the income stability of relocated households and foster common prosperity. 展开更多
关键词 digital technology use income stability relocated households digital literacy
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Influence of grazing patterns on the stability of soil aggregates in semi-arid grasslands 认领 引用 被引量：1
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作者 LI Haonian MENG Ruibing +2 位作者 MENG Zhongju GE Rile WU Xiaolong 《Journal of Arid Land》 SCIE CAS CSCD 2026年第2期322-338,共17页
Global grassland degradation necessitates the identification of sustainable grazing management strategies.In semi-arid regions,grazing exclusion(GE),cold-season grazing(CG),and free grazing(FG)represent common practic... Global grassland degradation necessitates the identification of sustainable grazing management strategies.In semi-arid regions,grazing exclusion(GE),cold-season grazing(CG),and free grazing(FG)represent common practices in grassland ecosystems,yet the long-term ecological consequences of these patterns on plant community structure and soil aggregate stability remain inadequately elucidated.In this study,we evaluated the effects of GE,CG,and FG on soil organic carbon,soil water content,soil bulk density,soil aggregates,and vegetation indicators in Xilamuren steppe,a semi-arid grassland in northern China through field sampling and laboratory analyses in 2024.Our findings revealed that,compared to CG and FG,GE significantly enhanced aboveground and belowground biomass,species diversity,and soil physical-chemical properties in the 0–30 cm layer.The dominant plant species in GE and CG sites were Stipa krylovii,Leymus chinensis,and Agropyron cristatum,whereas Stipa krylovii,Artemisia frigida,and Leymus chinensis were predominant in FG site.Different grazing patterns led to distinct soil aggregate distributions,with>2.00 andCG>FG.Furthermore,random forest modeling identified plant species diversity,plant growth traits,and grazing patterns as the primary determinants of soil aggregate stability.Collectively,these results offer valuable insights into the sustainable management and ecological restoration of semi-arid grasslands under different grazing pressures. 展开更多
关键词 soil aggregate stability grazing patterns grazing exclusion species diversity soil physical-chemical properties semi-arid grasslands
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Real-time evaluation of molten-pool dynamic stability in laser-directed energy deposition based on interframe similarity monitoring 认领 引用 被引量：1
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作者 Hui Xiao Mingtao Wu +4 位作者 Yanqin Li Jinhai Wang Wenjia Xiao Kuanfang He Lijun Song 《Additive Manufacturing Frontiers》 CAS CSCD 2026年第2期132-143,共12页
The dynamic stability of the molten pool during laser-directed energy deposition(L-DED)critically affects the forming quality and material properties.However,existing monitoring methods primarily focus on the static g... The dynamic stability of the molten pool during laser-directed energy deposition(L-DED)critically affects the forming quality and material properties.However,existing monitoring methods primarily focus on the static geometric features of the molten pool,such as width,height,area,and geometric center,yet fail to capture its instantaneous morphological evolution.This work established a lightweight real-time monitoring framework that integrates YOLOv8n and the perceptual Hashing(PHash)algorithm to monitor the dynamic stability of the molten pool in l-DED online.Furthermore,the molten-pool interframe similarity(MPIFS)is developed as a novel metric to quantify dynamic stability.The experimental results show that the YOLOv8n-PHash framework achieves a processing speed of 85 FPS(3.15×faster than U-Net)and reduces computational latency to 10.87 ms/frame,which is 6×faster than the structural similarity(SSIM),satisfying industrial closed-loop control requirements.The MPIFS metric shows three times higher sensitivity to molten-pool fluctuations than the static geometric parameters,with a standard deviation of 2.8%for MPIFS versus 0.15%-0.98%for the width and height.This enhanced sensitivity significantly improves the anomaly detection capabilities.In addition,a strong correlation among the process,molten-pool stability,and microstructure was confirmed.An appropriately low laser power was shown to improve MPIFS stability,resulting in smooth interfaces and uniform fine grains.This work provides a novel approach for the online monitoring of molten-pool stability and microstructure prediction in L-DED additive manufacturing. 展开更多
关键词 Additive manufacturing Online monitoring Molten-pool stability Microstructure
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Thermal Management Technologies for Improving the Thermal Stability of Perovskite Solar Cells 认领 引用 被引量：1
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作者 Zhongquan Wan Runmin Wei +4 位作者 Haibin Zhao Wang Yu Muhammad Azam Junsheng Luo Chunyang Jia 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第6期732-758,共27页
Perovskite solar cells(PSCs)have achieved excellent power conversion efficiencies;however,under direct sunlight,device temperatures can exceed ambient temperatures by more than 50℃,making thermal stability a critical... Perovskite solar cells(PSCs)have achieved excellent power conversion efficiencies;however,under direct sunlight,device temperatures can exceed ambient temperatures by more than 50℃,making thermal stability a critical challenge for commercialization.This review first summarizes the degradation mechanisms of PSCs induced by elevated temperatures,followed by a discussion of heat generation,with Joule heat identified as the primary contributor.Advanced thermal management strategies are then highlighted,including the use of high thermal conductivity materials,integration with thermoelectric devices,external radiative cooling layers,down-conversion approaches,and tandem structures.By systematically presenting these strategies,this review provides guidance for enhancing both the efficiency and thermal stability of PSCs,thereby supporting their pathway toward commercialization. 展开更多
关键词 Perovskite solar cells Thermal degradation Heat generation mechanism Thermal stability Thermal management technology
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Buckling and parametric excitation stability optimization of fluid-conveying pipes by frequency design 认领 引用
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作者 Xiaoye MAO Kexin CHANG +3 位作者 Jie JING Tianchang DENG Hu DING Liqun CHEN 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2026年第4期675-694,共20页
A methodology is proposed to enhance the buckling and parametric excitation stability of fluid-conveying pipes by designing their natural frequencies.As a direct indicator of structural stiffness with respect to defor... A methodology is proposed to enhance the buckling and parametric excitation stability of fluid-conveying pipes by designing their natural frequencies.As a direct indicator of structural stiffness with respect to deformation,which is intrinsically related to the overall structural stability,the natural frequency is adopted as the primary design criterion for enhancing system stability.Based on the generalized Hamilton's principle,the governing equation for a multi-restrained pipe system is derived.The analysis reveals that,the natural frequencies can be maximized by appropriately selecting the constraint locations,which induces the best buckling stability.Although increasing the flow velocity generally reduces the natural frequency,the optimal constraint location remains relatively unchanged,eventually approaching the location of the maximal critical flow speed,beyond which the pipe loses its static stability.Furthermore,the proposed method introduces additional nodes into the natural mode shape,indicating that a higher energy threshold is required to trigger the resonance.Consequently,the parametric resonance under pulsating flow conditions becomes more difficult to initiate.Meanwhile,with the frequency design,the pipe can prevent the occurrence of parametric resonance with smaller critical damping.Compared with other approaches aimed at enhancing the stability of fluid-conveying pipe systems,the proposed method offers greater practicality for engineering applications,as it only requires adjusting the constraint locations and the optimal location is insensitive to the flow speed. 展开更多
关键词 fluid-conveying pipe frequency design static bifurcation stability of parametric resonance optimal stability
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Corrigendum to “Enhancing the stability of 68Ga-labeled RNA aptamers for pancreatic β-cell and insulinoma imaging through nucleoside modifications” [Chinese Chemical Letters 36 (2025) 110804] 认领 引用
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作者 Zhe Li Haozhi Lei +3 位作者 Zhiqiang Ren Cheng Wang Qian Xia Weihong Tan 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期800-802,共3页
The authors regret that during reviewing the published data,we identified an inadvertent image misplacement in Fig.2.Fig.2b presents the serum stability electrophoresis result of the RNA aptamer 1-717,whereas Fig.2d s... The authors regret that during reviewing the published data,we identified an inadvertent image misplacement in Fig.2.Fig.2b presents the serum stability electrophoresis result of the RNA aptamer 1-717,whereas Fig.2d shows the corresponding result for the RNA aptamer m12-3773.Because the two aptamers have similar lengths(1-717 contains 40 bases and m12-3773 contains 44 bases)and exhibited highly comparable serum stability profiles,resulting in the erroneous reuse of the Fig.2d image in Fig.2b. 展开更多
关键词 RNA aptamers nucleoside modifications pancreatic cell imaging serum stability profilesresulting image misplacement insulinoma imaging serum stability electrophoresis serum stability
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Aanalysis of the impact of grid-forming doubly-fed induction generator parameter on transient stability and small-signal stability 认领 引用
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作者 Hui Liu Yangfan Zhang +5 位作者 Ruizhe Zhang Linlin Wu Yaohan Wang Kai Liang Yu Gong Zitong Hao 《Global Energy Interconnection》 EI CSCD 2026年第3期505-516,共12页
The Grid-Forming Doubly-Fed Induction Generator(GFM-DFIG)has attracted considerable attention due to its capabilities in voltage self-regulation and inertia support,although stability concerns persist.Transient stabil... The Grid-Forming Doubly-Fed Induction Generator(GFM-DFIG)has attracted considerable attention due to its capabilities in voltage self-regulation and inertia support,although stability concerns persist.Transient stability is mainly governed by grid-forming control,whereas small-signal stability is more affected by both the grid-forming control and the current control loop.This paper offers a thorough investigation into how short-circuit ratio(SCR)and system parameters affect the stability of GFM-DFIG,combining transient stability and small-signal stability analyses.First,a full-order model of the GFM-DFIG is established,followed by a reduced-order transient model.Using the transient model,the transient stability limit voltage(TSLV)under permanent fault conditions is calculated,providing a key benchmark for evaluating the generator’s transient stability.A detailed quantitative analysis is then conducted to explore the effects of SCR and parameter variations on the transient stability boundary.Next,small-signal stability is assessed through eigenvalue trajectories and damping ratios,revealing the impact of various parameters.The findings show that optimizing parameter settings can enhance both transient stability and small-signal stability.Finally,simulations are performed to validate the accuracy of the theoretical analyses. 展开更多
关键词 Grid-forming DFIG Transient stability Small-signal stability Characteristic root trajectory Damping ratio
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Thermal stability design for flexural wave bandgap of metamaterial plates with perforated and pre-curved patterns 认领 引用
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作者 Qian GENG Xing ZHOU +3 位作者 Mengyang WANG Xiongwei YANG Zhushan SHAO Yueming LI 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2026年第3期443-472,I0001-I0004,共30页
A design idea for single-component metamaterial plates is proposed to achieve the thermal stability of flexural wave bandgap by the perforated and pre-curved patterns.The band structure analysis suggests that perforat... A design idea for single-component metamaterial plates is proposed to achieve the thermal stability of flexural wave bandgap by the perforated and pre-curved patterns.The band structure analysis suggests that perforation can release part of the in-plane thermal expansion to weaken the softening effect of thermal stress.Introducing precurved components to the perforated structure will stop the decrement of the bandgap frequency in thermal environment,and even make the frequency higher with appropriate structural parameters.The bending stiffness of the heated plate is enhanced by the thermal deflection induced stiffening effect of the pre-curved components.The segmented pre-curved component presents a strong ability to resist the thermal influence on the flexural wave bandgap.A simplified model is established for the local structure of the precurved component.The theoretical calculations explain the thermally induced frequency increment of the bandgap and the discrepancy in the thermal response between the two pre-curved models.The transmittance of flexural wave validates the effectiveness of the proposed design. 展开更多
关键词 metamaterial plate flexural vibration bandgap perforation pre-curved pattern thermal stability
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Structural stability and magnetic properties of disordered SmCo7-xMx(M=metal)modulated by valence electron structure 认领 引用
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作者 Wei Liu Yongquan Guo +3 位作者 Boyang Li Yu Yao Haitao Kong Yichen Feng 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期517-523,共7页
SmCo7-xMx(M=Cu,Zr,Hf,Si,Ga)intermetallic compounds,with distinctive disordered crystal structure and excellent magnetic performance,are of great importance for application as high-temperature rare-earth permanen... SmCo7-xMx(M=Cu,Zr,Hf,Si,Ga)intermetallic compounds,with distinctive disordered crystal structure and excellent magnetic performance,are of great importance for application as high-temperature rare-earth permanent magnets.In this study,the relationship between the valence electronic structure,structural stability and magnetic and thermal properties of Sm(Co,M)7intermetallic compounds is revealed by using an empirical electron theory of solids and molecules.The structural stability is strongly related to the valence electronic structure that is modulated by doping the third element M into SmCo7.The calculated bond lengths,magnetic moments and Curie temperatures show good agreement with experimental ones.The magnetic moment and Curie temperature strongly depend on the number of 3d magnetic electrons,and can be modulated by mutual electron transformation between 3d magnetic electron and covalence electron. 展开更多
关键词 Sm(Co,M)7 pseudo-binary intermetallics valence electron structure structural stability magnetic property
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Tooeleite:Direct immobilization of trivalent arsenic—Mechanisms,stability,and prospects for environmental remediation 认领 引用
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作者 Qingzhu Li Chao Wu +6 位作者 Xuelei Yan Bensheng Li Qi Liao Weichun Yang Mengying Si Zhihui Yang Qingwei Wang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第6期186-193,共8页
Arsenic contamination represents a global environmental challenge,with trivalent arsenic(As(III))posing significantly higher risks than pentavalent arsenic(As(V)).Compared to conventional arsenic removal approaches,mi... Arsenic contamination represents a global environmental challenge,with trivalent arsenic(As(III))posing significantly higher risks than pentavalent arsenic(As(V)).Compared to conventional arsenic removal approaches,mineral immobilization technology demonstrates superior efficiency,cost-effectiveness,and environmental compatibility by sequestering arsenic within stable crystalline structures.However,since arsenic in most arsenic-containing minerals exists in the pentavalent form,the arsenic mineral immobilization method requires pre-oxidation of As(III)to As(V),which compromises efficiency and increases operational costs.Tooeleite(Fe6(AsO3)4(SO4)(OH)4・4H2O),as the sole naturally occurring mineral capable of directly immobilizing As(III)without the pre-oxidation,with potential applications for arsenic removal from wastewater.However,there is a lack of comprehensive reviews that systematically evaluate the influencing factors and mechanisms of tooeleite mineralization in arsenic removal.This work systematically reviews the geochemical origin,crystal structure,thermodynamic stability,and environmental persistence of tooeleite.And the critical regulatory factors governing both biotic and abiotic synthesis pathways,including pH conditions,Fe/As/S ratios and microbial interactions,are elucidated.Evaluating the arsenic removal efficiency,limitations,and mineralization pathways of chemical versus biological synthesis approaches,Finally,future research potentials are proposed to advance the engineering applications of tooeleite,thereby providing theoretical foundations and technical references for targeted arsenic pollution remediation. 展开更多
关键词 Tooeleite Arsenic Mineral immobilization Stability
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Invasive bamboo removal enhances soil multifunctionality via increasing fungal but not bacterial community stability 认领 引用
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作者 Baogang Zhang Shuquan Yu +8 位作者 Xiaoling Niu Shuo Jiao Xinli Chen Ye Deng Yunying Fang Tony Vancov Jian Chen Scott X.Chang Yanjiang Cai 《Forest Ecosystems》 SCIE CAS CSCD 2026年第2期506-517,共12页
Removing invasive plants is widely considered an effective approach for restoring invaded ecosystems.While the impacts of such removal on aboveground vegetation have been well-documented,its influences on soil microbi... Removing invasive plants is widely considered an effective approach for restoring invaded ecosystems.While the impacts of such removal on aboveground vegetation have been well-documented,its influences on soil microbial communities and multifunctionality remain poorly characterized,thus hampering a comprehensive assessment of its ecological impacts.Here,we assessed the impacts of removing invasive Moso bamboo(Phyllostachys edulis)on soil microbial communities and multifunctionality linked to carbon,nitrogen,and phosphorus cycling in a subtropical forest ecosystem,after five years of removal.Our findings revealed that bamboo removal significantly reduced microbial community complexity,altered community composition,and increased saprotrophic fungal diversity,while having minimal effects on bacterial and total fungal diversity.Moreover,the microbial communities in removal plots exhibited greater stability and lower sensitivity to environmental fluctuations.Notably,soil multifunctionality was higher in removal plots compared to both invaded and uninvaded plots.This improvement,although associated with several microbial community attributes,was primarily linked to greater stability in fungal rather than bacterial communities.Structural equation modeling(SEM)further revealed that fungal community stability mediated the linkages between other microbial community attributes and soil multifunctionality.These results underscore the ecological benefits of invasive bamboo removal for forest soil ecosystems and emphasize the fundamental role of microbial community stability in sustaining soil functions and restoring invaded landscapes. 展开更多
关键词 Invasive plants Subtropical forests Community stability Soil multifunctionality Restoration
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Recent Advances in Enhancing the Stability of CsPbI3 Perovskite Quantum Dots for Light-Emitting Diodes 认领 引用
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作者 Yajing Chang Junchun Li +10 位作者 Xiangyin Lv Yu Yue Yuntao Xie Jingting Yang Xiang Xie Changqi Zhou Liping Liu Zhigang Li Luis KOno Ryota Kabe Guoqing Tong 《Rare Metals》 SCIE EI CAS CSCD 2026年第1期39-60,共22页
CsPbI3 quantum dots(QDs)have attracted considerable attention as promising candidates for light-emitting diode(LED)applications.However,their intrinsic tendency to undergo a spontaneous phase transition to a nonper... CsPbI3 quantum dots(QDs)have attracted considerable attention as promising candidates for light-emitting diode(LED)applications.However,their intrinsic tendency to undergo a spontaneous phase transition to a nonperovskite structure significantly hampers their practical deployment.Considerable efforts have been devoted to stabilizing the perovskite phase of CsPbI3and improving the efficiency of LEDs.This review provides a comprehensive overview of the fundamental factors governing CsPbI3 instability,encompassing both intrinsic structural characteristics and external environmental influences,and critically evaluates recent strategies developed to improve phase stability and device performance.Approaches discussed include(1)size confinement,(2)ionic doping,(3)surface passivation and termination,and(4)encapsulation.Finally,we provide a brief outlook on the ongoing challenges,and outline potential avenues for future advancement of CsPbI3 QDs in optoelectronic applications. 展开更多
关键词 CsPbI3 LED perovskite quantum dot stability
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Time-dependent ground stability of inclined backfilled stope characterized by creep behavior 认领 引用
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作者 Ruofan Wang Yujie Zhu +3 位作者 Lang Liu Mengbo Zhu Baoxu Yan Hao Cui 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第2期479-491,共13页
Backfill is routinely adopted as a ground support measure for underground mines.However,ground stability enhancement by backfill has received limited research attention.This is likely to be because of the conventional... Backfill is routinely adopted as a ground support measure for underground mines.However,ground stability enhancement by backfill has received limited research attention.This is likely to be because of the conventional assumption that the fill material exhibits a significantly lower stiffness than the host rocks.Significantly,a recent pioneering work revealed the time-dependent ground stability around a backfilled stope with vertical walls through numerical modeling.In practice,underground stopes typically exhibit a higher or lower degree of inclination.This alters the stress state in peripheral rocks and may induce severe instability and dilution,particularly in stope-hanging walls.Hence,it is imperative to analyze the time-dependent ground stability of inclined backfilled stopes for backfill structure design.Therefore,comprehensive numerical simulations were performed using FLAC3D to address this knowledge deficiency by incorporating a coupled analysis of the backfill consolidation behavior and long-term creep deformation in surrounding rocks.The ground stability was evaluated based on the confinement effectiveness,strength-stress ratio,stress path relative to the yield surface,and time-dependent stress redistribution in the rocks.A parametric study revealed that the inclination angle of the backfilled stope reduced the confinement effectiveness in the host rocks when the wall creep was minor.This exacerbated the rock mass sloughing potential.However,a backfilled stope with a shallower dip angle achieved superior ground stability enhancement when the creep deformation was substantial,by applying a more significant compression on the backfill and effectively mobilizing its passive support performance during consolidation.Additional simulations were conducted to analyze the effects of stope height and width,mine depth,mechanical properties of rocks,backfill compressibility,and filling gap on the time-dependent stress redistribution and stability around the inclined backfilled stope. 展开更多
关键词 inclined backfilled stope ground stability time-dependency creep consolidation
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Stability analysis of residual soil slope with partially buried solitary rock block under rainfall conditions 认领 引用
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作者 GUO Jianjun CAO Heng +2 位作者 LI Mao ZHANG Wei WANG Junjie 《Journal of Mountain Science》 SCIE CSCD 2026年第4期1758-1771,共14页
Residual soil slopes containing partially buried solitary rock blocks exhibit fundamentally different instability mechanisms compared to conventional soil slopes without such inclusions,presenting unique challenges fo... Residual soil slopes containing partially buried solitary rock blocks exhibit fundamentally different instability mechanisms compared to conventional soil slopes without such inclusions,presenting unique challenges for geotechnical engineering practice.Currently,no mature theoretical framework exists for analyzing the stability of these composite slope systems.This study proposes a novel analytical method for evaluating the stability of residual soil slopes with partially buried solitary rock blocks under rainfall conditions.A geomechanical model was established,three distinct failure modes were identified,and corresponding safety factor formulas were derived.The theoretical calculations were validated against a case study in Hongqiao village,Sichuan Province,China,showing strong agreement with both physical model experiments and threedimensional discrete element method(3DEM)numerical simulations.Parametric analyses reveal that variations in burial depth and inclination angle of the solitary rock block govern the transition between different failure modes.The relative position of the rock block on the slope surface determines whether its presence enhances or diminishes overall slope stability.The safety factor against block sliding is most sensitive to slope gradient:at gradients between 25°and 60°,block toppling governs failure(exhibiting the lowest safety factor),whereas at gradients between 60°and 70°,global slope sliding becomes the dominant mechanism.The influence of the solitary rock block on slope stability diminishes with increasing slope height.While rainfall conditions exacerbate all three potential failure modes,they do not alter the most probable failure mechanism for a given slope configuration.Compared to resource-intensive physical experiments and numerical simulations,the proposed theoretical model offers an efficient tool for rapidly assessing potential failure modes and calculating safety factors for residual soil slopes containing partially buried solitary rock blocks. 展开更多
关键词 Residual soil slope Solitary rock block Boulders Rainfall Toppling Stability analysis
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