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he BCM1-EGY1 module balances chlorophyll biosynthesis and breakdown to confer chlorophyll homeostasis in land plants

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Molecular Plant 2025年第1期18卷 76-94页

作者： Dali Fu Hanlin Zhou Bernhard Grimm peng Wang School of Biological Sciences The University of Hong KongHong Kong SAR 999077China Institute of Biology/Plant Physiology Humboldt-Universität zu BerlinPhilippstrasse13Building 1210115 BerlinGermany State Key Laboratory of Agrobiotechnology The Chinese University of Hong KongHong Kong SAR 999077China

Chlorophyll metabolism has evolved during plant *** strictly light-dependent nature of chlorophyll biosynthesis found in angiosperms requires tight coordination of chlorophyll biosynthesis and breakdown to achieve chlorophyll ***,the specific control mechanisms remain largely ***,we demonstrate that the scaffold protein BALANCE OF CHLOROPHYLL METABOLISM1(BCM1)has co-evolved with the carboxy-terminal domains of specific enzymes involved in chlorophyll biosynthesis and breakdown,including GENOMES UNCOUPLED 4(GUN4)and Mg-dechelatase 1(SGR1).We found that the land plant-specific interaction of BCM1 with the carboxy-terminal domains of GUN4 and SGR1 is indispensable for concurrent stimulation of chlorophyll biosynthesis and suppression of chlorophyll *** land plant-specific carboxy-terminal domain is essential for the membrane docking and turnover of GUN4,whereas it is key for proteolysis of *** importantly,we identified the metallopeptidase Gravitropism-deficient and Yellow-green 1(EGY1)as the proteolytic machinery responsible for BCM1-mediated proteolysis of *** summary,this study reveals the BCM1-EGY1 module has evolved to maintain chlorophyll homeostasis by the post-translational control of the balance between chlorophyll biosynthesis and *** mechanism thus represents an evolutionary response to the metabolic demands imposed on plants in terrestrial environments.

关键词： chlorophyll homeostasis scaffold protein BCM1 proteolytic machinery EGY1 post-translational control

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Exploring the spatiotemporal heterogeneity of vegetation changes in subtropical humid karst region under CO_(2)fertilization

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Journal of Geographical Sciences 2025年第1期35卷 65-87页

作者： CHEN Meng ZHOU Qiuwen peng Dawei YAN Weihong School of Geography and Environmental Science Guizhou Normal UniversityGuiyang550001China Huanjiang Observation and Research Station for Karst Ecosystem Guangxi Key Laboratory of Karst Ecological Processes and ServicesInstitute of Subtropical AgricultureCASChangsha410125China University of Chinese Academy of Sciences Beijing100049China Faculty of Geographical Science Beijing Normal UniversityBeijing100875China Forestry Bureau of Shibing County 556000GuizhouQiandongnan PrefectureChina

Terrestrial ecosystems heavily depend on vegetation,which responds to carbon dioxide(CO_(2))fertilization in hot and humid *** subtropical humid karst region is a hot and humid region;whether and to what extent CO_(2)fertilization affects vegetation changes in such regions remains *** this study,we investigated the degree to which CO_(2)fertilization influences vegetation changes,along with their spatial and temporal differences,in the subtropical humid karst region using time-lag effect analysis,a random forest model,and multiple regression *** showed that CO_(2)fertilization plays an important role in vegetation changes,exhibiting clear spatial variations across different geomorphological zones,with its degree of influence ranging mainly between 11%and 25%.The highest contribution of CO_(2)fertilization was observed in the karst basin and non-karstic region,whereas the lowest contribution was found in the karst plateau *** studies have primarily attributed vegetation changes in subtropical humid karst region to ecological engineering,leading to an overestimation of its contribution to these *** findings of this study enhance the understanding of the mechanism of vegetation changes in humid karst region and provide theoretical and practical insights for ecological and environmental protection in these regions.

关键词： karst vegetation changes NDVI driving factors carbon dioxide fertilization

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Large-scale Preparation of Black CeO_(x) with Stable Oxygen Vacancies

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Chemical Research in Chinese Universities 2025年第1期41卷 40-47页

作者： peng Huan JIANG Mengmeng YE Jinfeng WANG Lei DING Shunmin CHEN Chao College of Materials and Chemical Engineering Pingxiang UniversityPingxiang337055P.R.China Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031P.R.China

Oxygen vacancy in ceria is a crucial regulation factor for modifying *** reduced oxygen vacancy will undergo rapid recombination and deactivation due to the imbalance perturbation of active oxygen species,thereby restricting their larger-scale *** this work,we proposed a strategy to stabilize oxygen vacancy in four black CeO_(x)(Si)(0

关键词： Black CeO_(x) Oxygen vacancy Ce-O_(v)-Si Stabilization Quartz sand

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of BelarusMinsk 220072Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologySchool of Marine Science and EngineeringHainan UniversityHaikou 570228HainanChina Department of Chemical and Environmental Engineering University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina

Methane, an abundant one-carbon(C_(1)) resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO_(2)emissions and coke deposition. Electrochemical conversion of methane(ECM) using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO_(2)emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng Jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen Feng peng Yunpeng Liu School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000GuangdongChina School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006GuangdongChina Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000GuangdongChina

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction (OER)and chlorin ion oxidation reaction (ClOR),glycerol oxidation reaction (GOR) is more thermodynamically and kinetically favorable ***,a Ru doping cobalt phosphide (Ru-CoP_(2)) is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that Ru doping featured in the dynamic reconstruction process from Ru-CoP_(2)to Ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing Ru-CoP_(2)as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm^(-2),which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Glycerol electrooxidation Hydrogen evolution Ru doping Cobalt phosphide Bifunctional electrocatalysts

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Microstructure effect of mechanical and cracking behaviors on brittle rocks using image-based fast Fourier transform method

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Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 399-413页

作者： Mingyao Li Lei peng Dejun Liu Jianping Zuo School of Mechanics and Civil Engineering China University of Mining and TechnologyBeijing100083China State Key Laboratory for Tunnel Engineering China University of Mining and TechnologyBeijing100083China

The internal microstructures of rock materials, including mineral heterogeneity and intrinsic microdefects, exert a significant influence on their nonlinear mechanical and cracking behaviors. It is of great significance to accurately characterize the actual microstructures and their influence on stress and damage evolution inside the rocks. In this study, an image-based fast Fourier transform (FFT) method is developed for reconstructing the actual rock microstructures by combining it with the digital image processing (DIP) technique. A series of experimental investigations were conducted to acquire information regarding the actual microstructure and the mechanical properties. Based on these experimental evidences, the processed microstructure information, in conjunction with the proposed micromechanical model, is incorporated into the numerical calculation. The proposed image-based FFT method was firstly validated through uniaxial compression tests. Subsequently, it was employed to predict and analyze the influence of microstructure on macroscopic mechanical behaviors, local stress distribution and the internal crack evolution process in brittle rocks. The distribution of feldspar is considerably more heterogeneous and scattered than that of quartz, which results in a greater propensity for the formation of cracks in feldspar. It is observed that initial cracks and new cracks, including intragranular and boundary ones, ultimately coalesce and connect as the primary through cracks, which are predominantly distributed along the boundary of the feldspar. This phenomenon is also predicted by the proposed numerical method. The results indicate that the proposed numerical method provides an effective approach for analyzing, understanding and predicting the nonlinear mechanical and cracking behaviors of brittle rocks by taking into account the actual microstructure characteristics.

关键词： Rock microstructure Cracking process Brittle rocks Fast Fourier transform(FFT) Digital image processing(DIP)

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Direct Observation of Early-Stage Polymer Crystallization Driven by Surface Wrinkling and Compressive Stress in Thin Films

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Chinese Journal of Polymer Science 2025年第2期43卷 360-367页

作者： peng Zhang Stephan V.Roth Peter Muller-Buschbaum Tian-Bai He School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationInstitute of Green Chemistry and Molecular EngineeringSun Yat-sen UniversityGuangzhou510275China Deutsches Elektronen-Synchrotron(DESY) Notkestrasse 8522607HamburgGermany Department of Fibre and Polymer Technology KTH Royal Institute of TechnologyTeknikringen 56-58StockholmSE-10044Sweden TUM School of Natural Sciences Department of PhysicsChair for Functional MaterialsTechnical University of MunichJames-Franck-Str.1Garching85748Germany Heinz Maier-Leibnitz-Zentrum(MLZ) Technical University of MunichLichtenbergstr.1Garching85748Germany State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryGraduate University of Chinese Academy of SciencesChinese Academy of SciencesChangchun130022China

The early stages of crystallization and occurrence of surface wrinkling were investigated using poly(butadiene)-block-poly(ε-caprolactone)with an ordered lamellar *** evidence has demonstrated that surface wrinkling precedes nucleation and crystal *** study examined the relationship between surface wrinkling,nucleation,and the formation of crystalline supramolecular structures using atomic force microscopy(AFM)and X-ray scattering *** wrinkling is attributed to curving induced by accumulated stresses,including residual stress from the sample preparation and thermal stress during *** stresses cause large-scale material flow and corresponding changes in the molecular conformations,potentially reducing the nucleation *** hypothesis is supported by the rapid crystal growth observed following the spread of surface ***,the surface curving of the polymer thin film creates local minima of the free energy,facilitating *** nuclei subsequently grow into crystalline supramolecular structures by incorporating polymer molecules from the *** mechanism highlights the role of localized structural inhomogeneity in the early stages of crystallization and provides new insights into structure formation processes.

关键词： Polymer crystallization Nucleation Surface wrinkling Stress Thin film

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Tribo-piezoelectric hybrid nanogenerator based on temporary solution template process

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Science China(Technological Sciences) 2025年第2期68卷 97-105页

作者： Jinxian ZHANG peng PAN Zhengchun YANG Jie HE Peifeng ZENG College of Integrated Circuit Science and Engineering Tianjin University of TechnologyTianjin 300382China

In this study,a friction piezoelectric hybrid nanogenerator(HNG)with a sponge-like structure was developed.A novel temporary solution template process was proposed to create smaller,uniformly distributed pores within the sponge structure,allowing for the complete volatilization of the porous agent without causing structural *** output voltage of the porous HNG structure was nearly twice that of its solid structure,demonstrating superior electrical output performance.A peak-to-peak open circuit voltage of 168 V,a short circuit current density of 36.41μA cm^(-2),and a maximum power density of 32 W m^(-2) were obtained at a load resistance of 200 MΩ by periodically compressing an HNG with a dimension of 0.8 cm×0.8 *** generated electricity was sufficient to directly illuminate 180 tandem white LEDs and power small electronic *** addition,this study shows that the HNG could detect electrical signals from different parts of the human body during movement,suggesting significant potential for applications in energy harvesting and motion sensing.

关键词： PDMS hybrid nanogenerator triboelectric piezoelectric flexible composites

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Extracting ship and heading from Sentinel-2 images using convolutional neural networks with point and vector learning

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Journal of Oceanology and Limnology 2025年第1期43卷 16-28页

作者： Xiunan LI peng CHEN Jingsong YANG Wentao AN Dan LUO Gang ZHENG Aiying LU Ocean College Zhejiang UniversityZhoushan 316021China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China National Satellite Ocean Application Service Ministry of Natural ResourcesBeijing 100081China

Obtaining accurate ship positions and headings in remote sensing images plays a crucial role in various ***,current deep learning-based methods primarily focus on ship position detection,while the detection of ship wakes relies on traditional non-deep learning approaches,which often underperform in complex marine *** proposed a novel,simple,and efficient method called Point-Vector *** proposed method leverages convolutional neural networks(CNN)for feature extraction and subsequently integrates multi-scale features to generate high-resolution feature *** the final stage,ship positions and headings are represented using a combination of points and *** experiments with results from automatic identification system(AIS)reports demonstrate that our method achieved impressive performance in two-class ship target detection,with an average precision of 96.4%,recall rate of 94.3%,and an F 1 score of 95.2%.Notably,the average heading error was 3.3°.The proposed model achieved a practical inference speed(FPS>30),and the average processing time for inferring a large-scale Sentinel-2 remote sensing image was 11.4 s.

关键词： deep learning ship detection heading remote sensing Sentinel-2

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Diluent modified weakly solvating electrolyte for fast-charging high-voltage lithium metal batteries

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Chinese Chemical Letters 2025年第1期36卷 556-560页

作者： Haining peng Huijun Liu Chengzong Li Yingfu Li Qizhi Chen Tao Li School of Chemistry and Chemical Engineering University of South ChinaHengyang 421000China School of Resource Environment and Safety Engineering University of South ChinaHengyang 421000China

Weakly solvating electrolyte(WSE)demonstrates superior compatibility with lithium(Li)metal batteries(LMBs).However,its application in fast-charging high-voltage LMBs is ***,we propose a diluent modified WSE for fast-charging high-voltage LMBs,which is formed by adding diluent of 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(TTE)into the tetrahydropyran(THP)based WSE.A relatively loose solvation structure is formed due to the formation of weak hydrogen bond between TTE and THP,which accelerates the de-solvation kinetics of Li~+.Besides,more anions are involved in solvation structure in the presence of TTE,yielding inorganic-rich interphases with improved ***(30μm)||Li Ni_(0.5)Co_(0.2)Mn_(0.3)O_(2)(4.1 mAh/cm^(2))batteries with the TTE modified WSE retain over 64%capacity retention after 175 cycles under high rate of 3 C and high-voltage of 4.5 V,much better than that with pure THP based *** work points out that the combination of diluent with weakly solvating solvent is a promising approach to develop high performance electrolytes for fast-charging high-voltage LMBs.

关键词： Lithium metal batteries Weakly solvating electrolyte Fast-charging High-voltage Diluent

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