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Economic effect of China's carbon neutrality target under shared socioeconomic pathways

Science China Earth Sciences 2025年第1期68卷 142-157页

作者： Zemiao LIU Xianjin HUANG Xinxian QI School of Geography and Ocean Science Nanjing UniversityNanjing210023China Key Laboratory of Carbon Neutrality and Territory Optimization Ministry of Natural ResourcesNanjing210023China Frontiers Science center for Critical Earth Material Cycling Nanjing UniversityNanjing210023China

Economic feasibility is crucial for achieving the carbon neutrality ***,current integrated assessments often underestimate the economic impacts of mitigation policies due to the lack of consideration of their economic *** study integrates a warming-labour productivity model with a typical integrated assessment model using shared socioeconomic *** simulates China's economic development and carbon emission levels under both baseline and carbon-neutral policy scenarios,evaluating the economic costs and benefits of emission reduction policies aimed at achieving carbon *** findings reveal the following:(1)The economic costs of emission reduction policies are projected to peak between 2050 and 2060,ranging from 0.41%to 9.37%of total GDP in the baseline scenario,primarily due to increased energy prices and R&D *** costs are expected to decline rapidly after 2070.(2)China's carbon-neutral policies will mitigate global warming,with the economic benefits of mitigation projected to reach 5.65%to 17.24%of China's total GDP by 2100.(3)Lowcarbon scenarios SSP1 and SSP4 could significantly reduce initial economic costs and advance the onset of net economic gains to *** integrated assessment confirms that China's carbon neutrality target offers substantial net economic benefits in the long *** minimize initial economic costs,efforts should focus on enhancing consumption-side transitions,upgrading lowcarbon technologies,and adopting new energy sources.

关键词： Climate change China Carbon neutrality Economic effects Policy

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Frog tongue-inspired wettable microfibers for particles capture

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Science Bulletin 2025年第3期70卷 383-389页

作者： Jiahui Guo Lingyu Sun Han Zhang Yuanjin Zhao Department of Rheumatology and Immunology Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Shenzhen Research Institute Southeast UniversityShenzhen 518071China Chemistry and Biomedicine Innovation center ChemBioMed Interdisciplinary Research CenterNanjing UniversityNanjing 210023China

Fibers have been of great significance in our daily lives,especially in the industrial production of *** in this area has been focused on developing microfibers with superior functions to enhance the filtration performances of the ***,inspired by the frog’s predation mechanism using its tongues to swiftly grab flying insects,we propose novel porous wettable microfibers from microfluidics to efficiently capture particles in the air for *** pre-dispersing LP emulsions into polyurethane(PU),porous microfibers dispersed with oil droplets could be continuously spun from a co-flow microfluidic device based on the quick phase inversion of *** design an optimal system with frog-tongue-like interfacial adhesion properties,the wettability performances of the porous microfibers are investigated under full,partial,and no oil coverage *** implemented in a mask,the 3D patterned networks based on the frog-tongue-inspired microfibers have been proven with remarkable particle capture performances while maintaining good air *** on these features,we believe that frog-tongue-inspired microfibers and their derived masks are of practical significance in multiple applications.

关键词： Bioinspired Microfluidics Microfiber Wettability Mask

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Xiangshao Granules Ameliorate Post-stroke Depression by Inhibiting Activation of Microglia and IDO1 Expression in Hippocampus and Prefrontal Cortex

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Chinese Journal of Integrative Medicine 2025年第1期31卷 28-38页

作者： LI Cheng-gang XU Lu-shan SUN Liang XU Yu-hao CAO Xiang ZHAO Chen-chen XIA Sheng-nan ZHANG Qing-xiu XU Yun Department of Neurology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjing210008China State Key Laboratory of Pharmaceutical Biotechnology and Institute of Translational Medicine for Brain Critical Diseases Nanjing UniversityNanjing210008China Jiangsu Key Laboratory for Molecular Medicine Medical School of Nanjing UniversityNanjing210008China nanjing Neurology Medical center Nanjing210008China

Objective To investigate the therapeutic effect of Xiangshao Granules(XSG)on post-stroke depression(PSD)and explore the underlying *** Forty-three C57BL/6J mice were divided into 3 groups:sham(n=15),PSD+vehicle(n=14),and PSD+XSG(n=14)groups according to a random number *** PSD models were constructed using chronic unpredictable mild stress(CUMS)after middle cerebral artery occlusion(MCAO).The sham group only experienced the same surgical operation,but without MACO and CUMS *** XSG group received XSG(60 mg/kg per day)by gavage for 4 *** mice in the sham and vehicle groups were given the same volume of 0.9%saline at the same *** body weight and behavior tests including open field test,sucrose preference test,tail suspension test,and elevated plus-maze test,were used to validate the PSD mouse ***-time fluorescence quantitative polymerase chain reaction(RT-qPCR),enzyme-linked immunosorbent assay(ELISA),and immunofluorescence staining were used to evaluate the anti-inflammatory effects of *** potential molecular mechanisms were explored and verified through network pharmacology analysis,Nissl staining,Western blot,ELISA,and RT-qPCR,*** The body weight and behavior tests showed that MCAO combined with CUMS successfully established the PSD *** alleviated neuronal damage,reduced the expressions of pro-apoptotic proteins Caspase-3 and B-cell lymphoma-2(BCL-2)-associated X(BAX),and increased the expression of anti-apoptotic protein BCL-2 in PSD mice(P<0.05 or P<0.01).XSG inhibited microglial activation and the expressions of pro-inflammatory cytokines including tumor necrosis factor-α,interleukin(IL)-1β,and IL-6 via the toll-like receptor 4/nuclear factor kappa-B signaling pathway in PSD mice(P<0.05 or P<0.01).Furthermore,XSG decreased the expression of indoleamine 2,3-dioxygenase1(IDO1)and increased the concentration of 5-hydroxytryptamine in PSD mice(P<0.05 or P<0.01).Conclusion XSG could reverse

关键词： post-stroke depression Xiangshao Granules indoleamine 2,3-dioxygenase 1 Chinese medicine

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Multi-interface structure design of bamboo-based carbon/Co/CoO composite electromagnetic wave absorber based on biomimetic honeycomb-shaped superstructure

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 631-644页

作者： Yanting Wang He Han Huiyang Bian Yanjun Li Zhichao Lou Jiangsu Co-Innovation center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China College of Light Industry and Food Engineering Nanjing Forestry UniversityNanjing 210037China

The rapid development of 5G communication technology and smart electronic and electrical equipment will inevitably lead to electromagnetic radiation *** heterointerface polarization relaxation through nanostructure design and interface modifica-tion has proven to be an effective strategy to obtain efficient electromagnetic wave ***,this work implements an innovative method that combines biomimetic honeycomb superstructure to constrain hierarchical porous heterostructure composed of Co/CoO nano-particles to improve the interfacial polarization *** method effectively controlled the absorption efficiency of Co^(2+)through de-lignification modification of bamboo,and combined with the bionic carbon-based natural hierarchical porous structure to achieve uniform dispersion of nanoparticles,which is conducive to the in-depth construction of heterogeneous *** addition,the multiphase struc-ture brought about by high-temperature pyrolysis provides the best dielectric loss and impedance matching for the ***,the obtained bamboo-based Co/CoO multiphase composite showed excellent electromagnetic wave absorption performance,achieving excel-lent reflection loss(RL)of-79 dB and effective absorption band width of 4.12 GHz(6.84-10.96 GHz)at low load of 15wt%.Among them,the material’s optimal radar cross-section(RCS)reduction value can reach 31.9 dB·m^(2).This work provides a new approach to the micro-control and comprehensive optimization of macro-design of microwave absorbers,and offers new ideas for the high-value utiliza-tion of biomass materials.

关键词： biomass honeycomb porous heterojunction structure interfacial polarization electromagnetic wave absorption

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Non-coding RNAs in acute ischemic stroke:from brain to periphery

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Neural Regeneration Research 2025年第1期20卷 116-129页

作者： Shuo Li Zhaohan Xu Shiyao Zhang Huiling Sun Xiaodan Qin Lin Zhu Teng Jiang Junshan Zhou Fuling Yan Qiwen Deng Department of Neurology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina General Clinical Research center Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina

Acute ischemic stroke is a clinical emergency and a condition with high morbidity,mortality,and *** predictive,diagnostic,and prognostic biomarkers and effective therapeutic targets for acute ischemic stroke remain *** innovations in high-throughput gene sequencing analysis,many aberrantly expressed non-coding RNAs(ncRNAs)in the brain and peripheral blood after acute ischemic stroke have been found in clinical samples and experimental *** expressed ncRNAs in the post-stroke brain were demonstrated to play vital roles in pathological processes,leading to neuroprotection or deterioration,thus ncRNAs can serve as therapeutic targets in acute ischemic ***,distinctly expressed ncRNAs in the peripheral blood can be used as biomarkers for acute ischemic stroke prediction,diagnosis,and *** particular,ncRNAs in peripheral immune cells were recently shown to be involved in the peripheral and brain immune response after acute ischemic *** this review,we consolidate the latest progress of research into the roles of ncRNAs(microRNAs,long ncRNAs,and circular RNAs)in the pathological processes of acute ischemic stroke–induced brain damage,as well as the potential of these ncRNAs to act as biomarkers for acute ischemic stroke prediction,diagnosis,and *** from this review will provide novel ideas for the clinical application of ncRNAs in acute ischemic stroke.

关键词： acute ischemic stroke apoptosis blood–brain barrier damage circular RNAs excitatory toxicity long non-coding RNAs microRNAs neuroinflammation non-coding RNAs oxidative stress

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Formation mechanism of deep natural hydrogen in the Sichuan Basin

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Science China Earth Sciences 2025年第2期68卷 581-597页

作者： Xiaomei WANG Kun HE Chunlong YANG Hao XIE Xiaobo WANG Yitong LYU Linfeng XIE Shuichang ZHANG Research Institute of Petroleum Exploration&development PetroChinaBeijing 100083China Key Laboratory of Petroleum Geochemistry China National Petroleum CorporationBeijing 100083China International center for Isotope Effects Research School of Earth Science and EngineeringNanjing UniversityNanjing 210023China

As a potential renewable and clean energy source,the distribution and exploration prospects of natural hydrogen have garnered widespread ***,the limitations in understanding the formation mechanisms and accumulation patterns of underground natural hydrogen have significantly constrained its efficient exploration and *** study reports H_(2)content and isotopes in natural gas from deep formations in sedimentary basins through geochemical analysis of 58 conventional gas samples from the Sinian to Triassic strata in the central Sichuan *** discovered that H_(2)content in deep natural gas in central Sichuan generally exceeds 0.1%,with a maximum of 1.6%,and hydrogen isotopes(δ^(2)H_(H_(2)))range from-850‰to-586‰.Analysis of the geological conditions,hydrogen generation mechanisms,and isotope fractionation characteristics in the study area confirms that microbial fermentation or in-situ organic matter cracking are not effective pathways for deep H_(2)*** with helium content and isotope analysis of the natural gas,it is inferred that the volcanic basement in the central Sichuan area is the potential source rock for natural H_(2)in the Sinian to Triassic ***,H_(2)originates from the radiolysis of water and hydrothermal reactions of Fe(Ⅱ)in the basement ***,a diffusion fractionation model reveals significant isotope fractionation during the migration and accumulation of deep H_(2)into sedimentary reservoirs,which lead to anomalously light δ^(2)H_(H_(2))in deep natural gas in central *** indicates that the underground natural hydrogen accumulation is in a long-term dynamic process,with simultaneous H_(2)accumulation and dissipation in the gas *** research not only elucidates the formation mechanism of deep H_(2)but also provides insights for the resource potential of natural hydrogen in sedimentary basins.

关键词： Natural H2 Sichuan Basin Hydrogen generation mechanism Isotope fractionation

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Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design

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Chinese Physics B 2025年第1期34卷 374-379页

作者： Jixin Liu Fengmin Wu Ting Li Junjun Wang Xinye Zou Dong Zhang Department of Applied Physics School of ScienceHarbin University of Science and TechnologyHarbin 150080China Key Laboratory of Modern Acoustics(MOE) Department of PhysicsCollaborative Innovation Center of Advanced MicrostructureNanjing UniversityNanjing 210093China Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise ***,they have limitations in terms of low-frequency absorption bandwidth,and the weak coupling effect under complex coiled structures also limits their *** this work,we introduce the composite structure changing the characteristic impedance of acoustic metamaterials to enhance the coupling ***,the perforated plates with inclined design instead of traditional partitions greatly improve the sound *** model and method designed in this paper show significant innovation in enhancing low-frequency absorption performance.

关键词： metamaterials composite structure over-damped modes coupling sound absorption

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Trinuclear gold-catalyzed site-selective alkylation of peptides

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Science China Chemistry 2025年第1期68卷 249-256页

作者： Qing-Yun Fang Chengyihan Gu Yinghan Chen Wencheng Yan Yong Liang Weipeng Li Chengjian Zhu Jie Han Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsChemistry and Biomedicine Innovation Center(ChemBIC)School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Green Catalysis center College of ChemistryZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 211198China

Selective modification of peptides has always been a challenging *** selective alkylation of peptides can alter the biological activity and physical properties of molecules,and it has gained significant research *** herein disclose an intriguing gold-catalyzed alkylation of peptides using bench-stable unactivated alkyl bromides under photoredox catalysis.A wide range of structurally diverse primary,secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with theα-C(sp^(3))–H in glycine residue of *** protocol demonstrates an exceptionally broad scope for alkyl halides and excellent tolerance for a wide range of useful functional groups.A series of relay transformations to construct cyclic peptides,to proceed click reaction and to realize peptide fluorescence labeling further enhance its synthetic *** addition,mechanistic studies and density functional theory(DFT)calculations reveal an inner-sphere and subsequent outersphere single electron transfer(SET)mechanism.

关键词： gold catalysis peptide alkylation C-C coupling radical

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A Deep Learning Estimation Method for Temperature-Induced Girder End Displacements of Suspension Bridges

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Structural Durability & Health Monitoring 2025年第2期19卷 307-325页

作者： Yao Jin Yuan Ren Chong-Yuan Guo Chong Li Zhao-Yuan Guo Xiang Xu School of Transportation Southeast UniversityNanjing210096China Department of Engineering Guangzhou Expressway Operation Management Co.Ltd.Guangzhou510000China Department of Engineering CCCC Highway Bridge National Engineering Research Center Co.Ltd.Beijing100088China Department of Engineering Jiangsu Provincial Transportation Engineering Construction BureauNanjing210004China

To improve the accuracy of thermal response estimation and overcome the limitations of the linear regression model and Artificial Neural Network(ANN)model,this study introduces a deep learning estimation method specifically based on the Long Short-Term Memory(LSTM)network,to predict temperature-induced girder end displacements of the Dasha Waterway Bridge,a suspension bridge in ***,to enhance data quality and select target sensors,preprocessing based on the sigma rule and nearest neighbor interpolation is applied to the raw ***,to eliminate the high-frequency components from the displacement signal,the wavelet transform is ***,the linear regression model and ANN model are established,whose results do not meet the requirements and fail to address the time lag effect between temperature and *** study proceeds to develop the LSTM network model and determine the optimal parameters through hyperparameter sensitivity ***,the results of the LSTM network model are discussed by a comparative analysis against the linear regression model and ANN model,which indicates a higher accuracy in predicting temperatureinduced girder end displacements and the ability to mitigate the time-lag *** be more specific,in comparison between the linear regression model and LSTM network,the mean square error decreases from 6.5937 to 1.6808 and R2 increases from 0.683 to 0.930,which corresponds to a 74.51%decrease in MSE and a 36.14%improvement in *** to ANN,with an MSE of 4.6371 and an R2 of 0.807,LSTM shows a decrease in MSE of 63.75%and an increase in R2 of 13.23%,demonstrating a significant enhancement in predictive performance.

关键词： Suspension bridges thermal response girder end displacement deep learning

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Construction of N-doped copper metal-organic frameworks for promoting photocatalytic carbon dioxide reduction to ethylene

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Science China Chemistry 2025年第2期68卷 601-609页

作者： Fan Guo Zong-Zheng He Peng Wang Xiao-Yu Zhang Hongjian Yu Qin-Chao Wang Wei-Yin Sun School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Coordination Chemistry Institute State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China

Engineering nonmetallic atom-doped metal-organic framework(MOF)catalyst to promote C−C coupling and realize conversion of CO_(2) into C_(2 )multi-carbon hydrocarbon products is still ***,with 2-methylimidazole as a dopant of N element,an N-doped NH_(2)-CuBDC catalyst was obtained via a facile and simple stirring *** illumination,compared with catalytic CO_(2) reduction to C1 product of CO by original MOF,N-doped NH_(2)-CuBDC can motivate generation of C_(2)H_(4),which is difficult to achieve in photocatalytic system by MOF-based *** transfer rates of photo-generated charges have been expedited due to the high electron density around Cu catalytic sites after *** importantly,C–C coupling intermediate CO–CHO*was identified by in situ Fourier transform infrared spectroscopy during the catalytic CO_(2) reduction reaction process,which further indicates the presence of Cu–N sites in the NH_(2)-CuBDC can facilitate the formation of C2H_(4) *** work uncovers a new paradigm to design photocatalysts for enhancing the reduction of CO_(2) to C_(2) products.

关键词： metal-organic frameworks C-C coupling doping photocatalytic CO_(2) reduction Cu-based catalysts

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