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Enhanced precipitation responses over the Tibetan Plateau following future Tambora-size volcanic eruption

Advances in Climate Change Research 2024年第5期15卷 845-858页

作者： Xin-Jun GAN Lin-Shan YANG meng ZUO Fei LIU chao-chao GAO College of Environmental and Resource Science Zhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Hangzhou 310058China State Key Laboratory of Severe Weather and Institute of Tibetan Plateau Meteorology Chinese Academy of Meteorological SciencesBeijing 100081China School of Atmospheric Sciences&Key Laboratory of Tropical Atmosphere Ocean System Ministry of Education Sun Yat-sen UniversiyZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory Sun Yat-sen UniversityZhuhai 519082China

Hydroclimate over the Tibetan Plateau(TP)notably influences the eco-environment of the Northern *** its high elevation and complex topography,the climate in the TP shows a high sensitivity to anthropogenic warming and volcanic-induced *** mechanism by which a future volcanic or similar radiative perturbation affects precipitation in the TP under an anthropogenic warming climate must be addressed not only to enable regional adaptation but deepen our understanding of how a climate system evolves under such a dual ***,based on the Community Earth System Model version 1.2 and ensemble simulations under pre-industrial and RCP8.5 scenarios,we showed that a Tambora-sized volcanic perturbation led to severe rainfall reduction over the south TP in the following summer(June-August).Evaporation response accounted for a minor and relatively constant share of precipitation reduction following the Clausius-Clapeyron scaling,whereas dynamic processes triggered an El Nino-like response in the eastern equatorial Pacific,which suppressed the Walker and Hadley circulation and contributed to drying *** warming renders the post-Tambora hydroclimate responses with 30%higher severity as a result of the increased climatological moisture content and intensified El Nino response,which enhanced hydroclimate sensitivity and attenuated monsoon *** results illustrate the amplification effect of global warming on the plateau's hydroclimate responses to external forcings,which may add another layer of uncertainty on climate adaptation in this already complex region.

关键词： Tibetan Plateau The community earth system model Hydrological response Tambora eruption El Nino

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Preparation of electrolyte membranes for micro tubular solid oxide fuel cells

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Science China Chemistry 2008年第9期51卷 808-812页

作者： tan XiaoYao YIN WeiNing meng Bo meng XiuXia YANG NaiTao MA ZiFeng School of Chemical Engineering Shandong University of TechnologyZibo 255049China Department of Chemical Engineering Shanghai Jiaotong UniversityShanghai 200240China

Yttria-stabilized zirconia (YSZ) micro tubular electrolyte membranes for solid oxide fuel cells (SOFCs) were prepared via the combined wet phase inversion and sintering technique. The as-derived YSZ mi- cro tubes consist of a thin dense skin layer and a thick porous layer that can serve as the electrode of fuel cells. The dense and the porous electrolyte layers have the thickness of 3-5 μm and 70-90 μm, respectively, while the inner surface porosity of the porous layer is higher than 28.1%. The two layers are perfectly integrated together to preclude the crack or flake of electrolyte film from the electrode. The presented method possesses distinct advantages such as technological simplicity, low cost and high reliability, and thus provides a new route for the preparation of micro tubular SOFCs.

关键词： solid oxide fuel cell micro tube yttrium stabilized zirconia (YSZ) phase inversion

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A New Xanthanolide from Carpesium longifolium

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Chinese Chemical Letters 2003年第5期14卷 483-484页

作者： chao YANG meng Chun YE Zhong Jian JIA Department of Chemistry National Laboratory of Applied Organic ChemistryLanzhou UniversityLanzhou 730000

A new xanthanolide was isolated from the aerial parts of Carpesium longifolium. Its structure was elucidated as 1, 4-epoxy-5?hydroxy-10酘-xantha-11(13)-en-12, 8?olide by spectral methods (HRMS, 1D and 2D NMR).

关键词： Carpesium longifolium Compositae xanthanolide.

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The stability of inorganic perovskite solar cells:from materials to devices

Materials Futures

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Materials Futures 2023年第3期2卷 21-37页

作者： Bingcheng Yu Shan tan Dongmei Li Qingbo meng Beijing National Laboratory for Condensed Matter Physics Renewable Energy LaboratoryInstitute of PhysicsChinese Academy of Sciences(CAS)Beijing 100190People’s Republic of China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101407People’s Republic of China College of Materials Science and Opto-Electronic Technology University Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Songshan Lake Materials Laboratory DongguanGuangdong 523808People’s Republic of China

Inorganic halide perovskite solar cells(IHPSCs)have become one of the most promising research hotspots due to to the excellent light and thermal stabilities of inorganic halide perovskites(IHPs).Despite rapid progress in cell performance in very recent years,the phase instability of IHPs easily occurs,which will remarkably influence the cell efficiency and *** effort has been devoted to solving this *** this review,we focus on representative progress in the stability from IHPs to IHPSCs,including(i)a brief introduction of inorganic perovskite materials and devices,(ii)some new additives and fabrication methods,(iii)thermal and light stabilities,(iv)tailoring phase stability,(v)optimization of the stability of inorganic perovskite solar cells and(vi)interfacial engineering for stability ***,perspectives will be given regarding future work on highly efficient and stable *** review aims to provide a thorough understanding of the key influential factors on the stability of materials to highly efficient and stable IHPSCs.

关键词： inorganic halide perovskites inorganic halide perovskite solar cells light stability thermal stability phase instability

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Convergence analysis and application of the central force optimization algorithm

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Science China(Information Sciences) 2015年第5期58卷 208-210页

作者： meng chao GONG Jing LIU SanMin SUN ZhiXin Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of Education College of Mathematics & Physics Nanjing University of Posts and Telecommunications College of Computer and Information Anhui Polytechnic University

Dear editor,The Central Force Optimization(CFO)[1]is a new heuristic *** contrast with the stochastic algorithms such as Particle Swarm Optimization(PSO)[2],Ant Colony Optimization[3]and other such algorithms[4–6],CF... 详细信息

关键词： CFO Convergence analysis and application of the central force optimization algorithm

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Effect of Substrate Bias on Microstructure and Properties of Tetrahedral Amorphous Carbon Films

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Journal of Materials Science & Technology 2003年第z1期19卷 109-111页

作者： Jiaqi ZHU Jiecai HAN Songhe meng Qiang LI Manlin tan Center of Composite Materials Harbin Institute of Technology Harbin 150001 China Center of Composite Materials Harbin Institute of Technology Harbin 150001 China Center of Composite Materials Harbin Institute of Technology Harbin 150001 China Center of Composite Materials Harbin Institute of Technology Harbin 150001 China Center of Composite Materials Harbin Institute of Technology Harbin 150001 China

The microstructure and properties of tetrahedral amorphous carbon (ta-C) films deposited by the filtered cathodic vacuum arc technology has been investigated by visible Raman spectroscopy, AFM and Nano-indentor. The Raman spectra have been fitted with a single skewed Lorentzian lineshape described by BWF function defining coupling coefficient, which characterizes the degree of asymmetry and is correlated with the sp3 content. When the substrate bias is -80 V, the sp3 content is the most and simultaneously the coupling coefficient is the least, following with the minimum root mean square surface roughness (Rq=0.23 nm) and the highest hardness (51.49 GPa), Young′s modulus (512.39 GPa), and critical scratching load (11.72 mN). As the substrate bias is increased or decreased, the sp3 content and other properties lower correspondingly.

关键词： Tetrahedral amorphous carbon, Filtered cathodic vacuum arc, Substrate bias

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The influence of DC stray current on pipeline corrosion

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Petroleum Science 2016年第1期13卷 135-145页

作者： Gan Cui Zi-Li Li chao Yang meng Wang College of Pipeline and Civil Engineering China University of Petroleum (East China)

DC stray current can cause severe corrosion on buried *** this study,firstly,we deduced the equation of DC stray current interference on ***,the cathode boundary condition was discretized with pipe elements,and corresponding experiments were designed to validate the mathematical ***,the numerical simulation program BEASY was used to study the corrosion effect of DC stray current that an auxiliary anode bed generated in an impressed current cathodic protection *** effects of crossing angle,crossing distance,distance of the two pipelines,anode output current,depth,and soil resistivity were *** results indicate that pipeline crossing substantially affects the corrosion potential of both protected and unprotected *** crossing angles,crossing distances,and anode depths,our results suggest,have no significant *** anode output current or soil resistivity reduces pipeline corrosion gradually.A reduction of corrosion also occurs when the distance between two parallel pipelines increases.

关键词： pipelines Pipeline anode crossing cathodic buried cathode resistivity unchanged intersection

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Defect repairing in two-dimensional transition metal dichalcogenides

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Frontiers of physics 2023年第5期18卷 47-64页

作者： Shiyan Zeng Fang Li chao tan Lei Yang Zegao Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

Atomically thin two-dimensional(2D)transition metal dichalcogenides(TMDCs)have stimulated enormous research interest due to rich phase structure,high theoretical carrier mobility and layer-dependent *** view of the close correlation between defects and properties in 2D TMDCs,more attentions have been paid on the defect engineering in recent years,however the mechanism is still ***,we review the critical progress of defect engineering and provide an extensive way to modulate the properties depressed by *** insight into the defect engineering,we firstly introduce two common kinds of defects during the growth progress of TMDCs and the possible distribution of energy levels those defects could ***,various methods to improve point defects and grain boundaries during the period of growth are discussed intensively,with the assistance of which more large-area TMDCs films can be *** the defects in TMDCs are inevitable regardless of concentration,we also highlight strategies to heal the defects after *** dry methods or wet methods,the chalcogen vacancies can be repaired and thus,the performance of electronic device would be significantly ***,we propose the challenges and prospective for defect engineering in 2D TMDCs materials to support the optimization of device and lead them to wide applied fields.

关键词： defect repairing two-dimensional transition metal dichalcogenides

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Chiral Phosphoric Acid Catalyzed Asymmetric Synthesis of Axially Chiral Compounds

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Chinese Journal of Chemistry 2021年第7期39卷 1787-1796页

作者： Bing-chao Da Shao-Hua Xiang Shaoyu Li Bin tan Department of Chemistry and Shenzhen Grubbs Institute Southern University of Science and TechnologyShenzhenGuangdong 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhenGuangdong 518055China

The well-defined conformational properties of axially chiral compounds bring extraordinary values to an assortment of bioactive molecules,advanced materials,organocatalysts as well as chiral ligands in asymmetric *** demonstrated usefulness and untapped potential of axially chiral structural motifs stimulate increasing efforts to develop novel and efficient approaches for their *** this regard,the chiral phosphoric acids broadly used in asymmetric Brønsted acid catalysis have shown high relevance for atroposelective synthesis as *** strong interest in reaction chemistry of atropisomers has established a rewarding research programme in our *** course of studies will be recounted in this account,with discussion focused on the use of chiral phosphoric acids to catalyze construction of several key axially chiral structures such as BINAM,BINOL,NOBIN,arylquinones,SPINOL,arylpyrrole analogues and axially chiral alkenes.

关键词： Axial chirality Organocatalysis Chiral phosphoric acid Biaryls Asymmetric synthesis

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Dynamic Clustering of Coordinated Multi-point Transmission Based on Friends Algorithm

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Chinese Journal of Electronics 2015年第2期24卷 414-418页

作者： HENG Wei LIANG Tian meng chao LI Shihuan LU Xiaowen National Mobile Communications Research Laboratory Southeast University

Coordinated multi-point(Co MP) transmission has been regarded as a fascinating technology for4 G wireless communication systems. In this paper, the Co MP dynamic clustering problem is studied, a Friends algorithm(F-A) is proposed based on the procedure of making friends in human society, and then a dynamic clustering scheme is proposed based on F-A. The mutual interference among cells of the network is considerate in this algorithm, which can be obtained by CSI *** to Traversal search(T-S) algorithm, the proposed algorithm has lower computational complexity, and the performance is almost equal. Simulation results show the proposed scheme is effective for dynamic clustering.

关键词： Coordinated multi-point(Co MP) Static clustering Dynamic clustering Friends algorithm

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