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Mechanism study of the molluscicide candidate PBQ on Pomacea canaliculata using a viscosity-sensitive fluorescent probe

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Chinese Chemical Letters 2025年第1期36卷 447-452页

作者： Lanyun Zhang Weisi Wang Yu-Qiang Zhao Rui Huang Yuxun Lu Ying Chen Liping Duan Ying Zhou yunnan Characteristic Plant Extraction Laboratory College of Chemical Science and TechnologyYunnan UniversityKunming 650091China National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchWHO Centre for Tropical DiseasesNational Key Laboratory of Inteligent Tracking and Forecasting for Infectious DiseasesKey Laboratory on Parasite and Vector Biology MinistryofHealthShanghai200025China

PBQ[1-(4-chlorophenyl)-3-(pyridin-3-yl)urea],an enormous potent molluscicide,showed excellent Pomacea canaliculata(***)control activity and low toxicity for other aquatic organisms,but its snail-killing mechanisms are still not fully *** employed an optical method to elucidate PBQ action via a novel fluorescent viscosity probe,*** the viscosity in the test solutions increased,compared with that in pure ethanol,a 54-fold fluorescence intensity enhancement of NCV was observed in 310 cP of 90%***,NCV successfully exhibited a selective fluorescence response towards monensin-induced cellular viscosity changes in HepG2 *** liver,stomach,and foot plantar of the tested snails were frozen and sectioned for fluorescent imaging experiments after the treatment with different PBQ concentrations over various times.A significant fluorescent increase in the snail's liver was observed upon exposure to 0.75 mg/L PBQ for 72 h,which highlighted an increase in *** and eosin(HE)staining further supported PBQ-induced liver damage with a viscosity increase in *** study provides a new rapid optical visualization method to study the killing mechanisms of PBQ and may help discover new chemicals that control snail populations.

关键词： Fluorescence sensor Viscosity Pomacea canaliculata Molluscicide mechanisms Bio-imaging

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MixerKT:A Knowledge Tracing Model Based on Pure MLP Architecture

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Computers, Materials & Continua 2025年第1期82卷 485-498页

作者： Jun Wang Mingjie Wang Zijie Li Ken Chen Jiatian Mei Shu Zhang Key Laboratory of Education Informatization for Nationalities Ministry of EducationYunnan Normal UniversityKunming650000China yunnan Key Laboratory of Smart Education Yunnan Normal UniversityKunming650000China

In the field of intelligent education,the integration of artificial intelligence,especially deep learning technologies,has garnered significant *** tracing(KT)plays a pivotal role in this field by predicting students’future performance through the analysis of historical interaction data,thereby assisting educators in evaluating knowledgemastery and tailoring instructional *** knowledge tracingmethods,largely based on Recurrent Neural Networks(RNNs)and Transformer models,primarily focus on capturing long-term interaction patterns in sequential ***,these models may neglect crucial short-term dynamics and other relevant *** paper introduces a novel approach to knowledge tracing by leveraging a pure Multilayer Perceptron(MLP)*** proposeMixerKT,a knowledge tracing model based on theHyperMixer framework,which uniquely integrates global and localMixer feature *** architecture enables more effective extraction of both long-terminteraction trends and recent learning behaviors,addressing limitations in currentmodels thatmay overlook these key *** evaluations on twowidely-used datasets,ASSIS Tments2009 and Algebra2005,demonstrate that MixerKT consistently outperforms several state-of-the-art models,including DKT,SAKT,and Separated Self-Attentive Neural Knowledge Tracing(SAINT).Specifically,MixerKT achieves higher prediction accuracy,highlighting its effectiveness in capturing the nuances of learners’knowledge *** results indicate that our model provides a more comprehensive representation of student learning patterns,enhancing the ability to predict future performance with greater precision.

关键词： Knowledge tracing multilayer perceptron channel mixer sequence mixer

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Nanoparticle-Assisted Phonon Transport Modulation in Si/Ge Heterostructures Using Neuroevolution Potential Machine Learning Models

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Chinese Physics Letters 2025年第3期42卷 93-117页

作者： Jincheng Yue Rongkun Chen Dengke Ma Shiqian Hu School of Physics and Astronomy Yunnan Key Laboratory for Quantum InformationYunnan UniversityKunming 650091China Phonon Engineering research Center of Jiangsu Province Center for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing 210023China

Reducing the thermal boundary resistance(TBR)is critical to enhance the thermal management efficiency and optimize the performance of electronic and thermoelectric *** this study,we employed non-equilibrium molecular dynamics(NEMD)simulations using neuroevolution potential(NEP)machine learning models to investigate the impact of embedding nanoparticles in Si/Ge heterostructures on the *** results showed a significant reduction in the *** was attributed to the enhanced phonon density of states matching via resonance,which promoted more efficient elastic phonon transport across the ***,this approach also led to a substantial increase in the bulk thermal resistance,highlighting a trade-off in which the overall heat dissipation is *** address this,we investigated an alternative strategy in which a nanoparticle was positioned directly at the interface to modulate the interfacial modes,thereby improving the phonon transport efficiency without adversely affecting the bulk thermal *** simulations validated this approach,showing a comparable TBR reduction,while mitigating the bulk thermal resistance increase observed with the resonance-based embedding *** study offers valuable insights into resolving interfacial heat dissipation challenges and provides a balanced strategy for optimizing the thermal transport efficiency of nanoscale material systems.

关键词： evolution interfacial transport

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Decoupled responses of soil microbial diversity and ecosystem functions to successive degeneration processes in alpine pioneer community

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Science China Life Sciences 2025年

作者： Yazhou Zhang J.Aaron Hogan Yaojun Ye Xin Liu Minshu Song Jianguo Chen Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences USDA Forest Service International Institute of Tropical Forestry School of Life Sciences Yunnan Normal University School of Ecology and Environment Southwest Forestry University

Many alpine ecosystems are undergoing vegetation degradation because of global changes, which are affecting ecosystem functioning and biodiversity. The ecological consequences of alpine pioneer community degradation have been less studied than glacial retreat or meadow degradation in alpine ecosystems. We document the comprehensive responses of microbial community characteristics to degradation processes using field-based sampling, conduct soil microcosm experiments to simulate the effects of global change on microorganisms, and explore their relationships to ecosystem functioning across stages of alpine pioneer community degradation. Our work provides the first evidence that alpine pioneer community degradation led to declines of 27% in fungal richness, 8% in bacterial richness, and about 50% in endemic microorganisms. As vegetation degraded, key ecosystem functions such as nutrient availability, soil enzymatic activity, microbial biomass, and ecosystem multifunctionality progressively increased. However, soil respiration rate and carbon storage exhibited unbalanced dynamics. Respiration rate increased by 190% during the middle stage of degradation compared with the primary stage, and it decreased by38% in the later stage. This indicates that soil carbon loss or emission increases during the mid-successional stage, whereas in later successional stages, alpine meadows become significant carbon sinks. Compared with microbial community characteristics(such as richness of total and functional taxa, and network complexity), community resistance contributes more significantly to ecosystem ***, the bacterial community resistance is crucial for ecosystem functioning, yet it is greatly impaired by nitrogen addition. Based on microbial network, community assembly, and community resistance analyses, we conclude that fungi are more vulnerable to environmental changes and show smaller contributions to ecosystem functions than bacteria in degrading alpine ecosys

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Backbone phylogeny of Salix based on genome skimming data

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Plant Diversity 2025年第2期47卷 178-188页

作者： Kai-Yun Chen Jin-DanWang Rui-Qi Xiang Xue-Dan Yang Quan-Zheng Yun Yuan Huang Hang Sun Jia-Hui Chen CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPR China University of Chinese Academy of Sciences Beijing 100049PR China Beijing Ori-Gene Science and Technology Co Ltd Beijing 102206PR China School of Life Sciences Yunnan Normal UniversityKunming 650092YunnanPR China

The genus Salix is a common component of the Northern Hemisphere dendroflora with important ecological and economic ***,taxonomy and systematics of Salix is extremely difficult and relationships between main lineages,especially deep phylogenies,remain largely *** this study,we used genome-skimming,plastome assembly,and single-copy orthologs(SCOs)from 66 Salix accessions,along with publicly available plastome and sequence read archive(SRA)datasets to obtain a robust backbone phylogeny of Salix,clarify relationships between its main lineages,and gain a more precise understanding of the origin and diversification of this species-rich *** plastome and SCO datasets resolved Salix into two robust clades,with plastome-based phylogenies lacking inner resolution and SCO offering fully resolved *** results support the classification of Salix into five subgenera:Salix,Urbaniana,Triandrae,Longifoliae and *** observed a significant acceleration in the diversification rate within the Chamaetia-Vetrix clade,while Salix exhibited increased rates of diversification spanning from the early Oligocene to the late *** changes coincided with contemporaneous tectonic and climate change *** results provide a foundation for future systematic and evolutionary studies of ***,we showed that genome skimming data is an efficient,rapid,and reliable approach for obtaining extensive genomic data for phylogenomic studies,enabling the comprehensive elucidation of Salix relationships.

关键词： Salix Genome skimming Phylogenomics Orthologous coding sequencing Subgeneric classification

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Spatial-temporal Evolution and Driving Factors of Habitat Quality Based on Different Topographic Gradients in Zhaotong City, yunnan Province

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Journal of Resources and Ecology 2025年第2期16卷 306-325页

作者： CHEN Hongmin LIU Fenglian YANG Bowen LUO Qinqin Institute of Land&Resources and Sustainable Development Yunnan University of Finance and EconomicsKunming 650221China yunnan Key Laboratory of Service Computing Yunnan University of Finance and EconomicsKunming 650221China

Habitat quality plays a crucial role in enhancing the regional ecological environment and safeguarding biodiversity,with topography being a key element influencing the structure and function of ecosystem *** research aims to assess habitat suitability across various topographic gradients,analyze the spatial heterogeneity of habitat quality between 2000 and 2020,and explore the relationship between influencing factors and habitat *** model is used to evaluate the spatial-temporal evolution characteristics of habitat quality in Zhao-tong City,focusing on how topographic gradients impact habitat quality *** study also delves into the factors affecting habitat quality in Zhaotong City,including land use patterns,elevation,slope,average annual temperature and other *** results indicate three key aspects of this system.(1)During the study period,the land use types were mainly forest land,farmland and grassland,with construction land experiencing the most significant increase.(2)From 2000 to 2020,the quality areas of high and medium habitats in Zhaotong City de-creased,while the quality areas of medium-high,medium-low and low habitats increased.(3)The study revealed a notable topographic gradient effect on habitat quality,with the primary driver shifting from GDP to land use type and subsequently to average annual precipitation in Zhaotong *** transfer between different grades of habitat quality mainly presents the characteristics of“descending”transfer,with medium-low quality habitats typically found on medium-low topographic gradients and medium-high quality habitats on medium-high ***-detection results show that land use type exhibited the strongest correlation with other influencing ***,this study can provide a scientific basis for policy makers to protect biodiversity,enhance ecosystem services and promote regional economic development.

关键词： habitat quality InVEST model topographic gradients Geo-detector Zhaotong City

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Hemispheric prediction of solar cycles 25 and 26 from multivariate sunspot time-series data via Informer models

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Astronomical Techniques and Instruments 2025年第1期2卷 16-26页

作者： Jie Cao Tingting Xu Linhua Deng Xueliang Zhou Xinhua Zhao Nanbin Xiang Fuyu Li Miao Wan Weihong Zhou School of Mathematics and Computer Science Yunnan Minzu UniversityKunming 650504China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Radio Science and Technology Center(πCenter) Chengdu 610041China yunnan Observatories Chinese Academy of SciencesKunming 650216China National Laboratory on Adaptive Optics Chinese Academy of SciencesChengdu 610209China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650216China

Solar activity plays an important role in influencing space weather,making it important to understand numerous aspects of spatial and temporal variations in the Sun's radiative ***-performance deep learning models and long-term observational records of sunspot relative numbers are essential for solar cycle *** the multivariate time series of monthly sunspot relative numbers provided by the National Astronomical Observatory of Japan and two Informer-based models,we forecast the amplitude and timing of solar cycles 25 and *** main results are as follows:(1)The maximum amplitude of solar cycle 25 is higher than the previous solar cycle 24 and the following solar cycle 26,suggesting that the long-term oscillatory variation of sunspot magnetic fields is related to the roughly centennial Gleissberg cyclicity.(2)Solar cycles 25 and 26 exhibit a pronounced Gnevyshev gap,which might be caused by two non-coincident peaks resulting from solar magnetic flux transported by meridional circulation and mid-latitude diffusion in the convection zone.(3)Hemispheric prediction of sunspot activity reveals a significant northsouth asynchrony,with activity level of the Sun being more intense in the southern *** results are consistent with expectations derived from precursor methods and dynamo theories,and further provide evidence for internal changes in solar magnetic field during the decay of the Modern Maximum.

关键词： Solar magnetic fields Solar cycle Deep learning

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Efficient optimization of electron transfer pathway by constructing phosphide/ceria interface boosts seawater hydrogen production

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Journal of Energy Chemistry 2024年第8期95卷 490-498,I0011页

作者： Yifan Zhao Lingfeng Yang Youyu Long Min Xi Anran Chen Hua Zhang School of Materials and Energy Yunnan UniversityKunming 650091YunnanChina Electron Microscopy Centre of yunnan University Yunnan UniversityKunming 650091YunnanChina

Developing efficient and durable hydrogen evolution reaction(HER)electrocatalysts is one of the most important issues for the commercialization of seawater electrolysis,but it remains ***,we report a CeO_(2)-CoP nanoneedle array catalyst loaded on Ti mesh(CeO_(2)-CoP/TM)with workfunction-induced directional charge transport *** CeO_(2)-CoP/TM catalyst showed superior HER catalytic activity and stability,with over potentials of 41 and 60 mV to attain 10 mA cm^(-2),in 1 M KOH and 1 M KOH+seawater electrolyte,*** results and theoretical calculations reveal that the work function drives the charge transfer from CeO_(2)to CoP,which effectively balances the electronic density of CoP and CeO_(2),optimizes the d-band center,and accelerates the water activation kinetics,thus enhancing the HER *** solar-driven water electrolysis device displays a high and stable solar-to-hydrogen conversion efficiency of 19.6%.This study offers a work function-induced directional charge transport strategy to design efficient and durable catalysts for hydrogen production.

关键词： Work function Heterostructure Charge transport Seawater splitting Solar-to-hydrogen

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Intense single-band red upconversion emission in BiOCl:Er3+ layered semiconductor via co-doping Ho3+

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Journal of Rare Earths 2020年第6期38卷 577-583页

作者： Yuehong Peng Jincai Peng Jiajun Han Tianhui Wang Zhaoyi Yin Jianbei Qiu Qi W ang Zhengwen Yang Zhiguo Song School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China School of Physics and Electronical Science Chuxiong Normal UniversityChuxiong 675000China Dean's Office Sichuan University of Arts and ScienceDazhou 635000China

Exploring a new tuning way to facilely realize single-band red emission in trivalent rare-earth ions(RE3+) doped upconversion(UC) materials is still *** this work,the intense single-band red emission is achieved by co-doping only Ho3+in the BiOCl:Er3+ under 1550 nm *** the BiOCl layered host,co-doping Ho3+can further enhance the red emission and simultaneously suppress the green emission of Er3+,and thus obviously improve the red-to-green(R/G) *** is found that Ho3+does not se rve as ene rgy trapping through the 5 I6 state as in traditional UC materials but acts as ET bridge(4 S3/2,2 H11/2(Er3+)→5 F4,5 S2(Ho3+)→4 F9/2(Er3+)).The tuning mechanism of Ho3+is discussed in detail and further confirms through a comparative *** research gives an unusual perspective to tune the UC behavior of Er3+through co-doping Ho3+,which might be inspiring for achievement of single-band red UC emission.

关键词： Single-band red emission BiOCl Er3+ Ho3+ Rare Earths

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MOF and its derivative materials modified lithium-sulfur battery separator:a new means to improve performance

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Rare Metals 2024年第6期43卷 2418-2443页

作者： Rong-Wei Huang Yong-Qi Wang Dan You Wen-Hao Yang Bin-Nan Deng Fei Wang Yue-Jin Zeng Yi-Yong Zhang Xue Li National Local Joint Engineering research Center for Lithium-Ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Batteries Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

In recent years,lithium-sulfur batteries(LSBs)are considered as one of the most promising new generation energies with the advantages of high theoretical speeific capacity of sulfur(1675 mAh·g^(-1)),abundant sulfur resources,and environmental friendliness storage technologies,and they are receiving wide attention from the ***,the problems of the shuttle effect and lithium dendrite growth in LSBs have limited their practical application,so there is a need to find ways to solve these *** is an excellent choice to use novel materials to modify battery *** those novel materials,the metal-organic framework(MOF)has the properties of regular pores and controllable *** applied as a positive electrode and diaphragm,it can restrain the shuttle effect and lithium dendrite growth,especially since it shows excellent performance in diaphragm ***,various design strategies and synthesis methods of MOF-modified separators are reviewed in this paper,and the applications of MOF in LSBs separators in different forms are introduced,including the composite of MOF and carbon-based materials,the compounding of MOF and polymer,self-carbonization to form MOF-derived *** the same time,different characterization techniques are systematically reviewed to obtain the physical and chemical properties of MOF particles and the working mechanism of MOF-modified diaphragm,which provides a basis for further research in this ***,some future research trends and directions are put forward to fully tap the future commercial potential of MOF-modified diaphragm in LSBs.

关键词： MOF Lithium-sulfur battery Modified diaphragms Design strategies Prospect Characterization

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