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Dynamic changes and convergence of China's regional green productivity:A dynamic spatial econometric analysis

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Advances in Climate Change Research 2022年第2期13卷 266-278页

作者： Xu-Quan ZHAI rui xue Bin HE Dong YANG Xiang-Yu PEI Xian LI Yuli SHAN Research Center for Socialism with Chinese Characteristics Zhejiang UniversityHangzhou 310058China Centre for Corporate Sustainability and Environmental Finance Department of Applied FinanceMacquarie UniversitySydney 2109Australia China Center for Public Sector Economic Research Jilin UniversityChangchun 130012China School of Statistics Southwestern University of Finance and EconomicsChengdu 611130China School of Economics Jilin UniversityChangchun 130012China College of Textile Donghua UniversityShanghai 201620China Integrated Research on Energy Environment and Society(IREES)Energy and Sustainability Research Institute GroningenUniversity of GroningenGroningen 9747 AGthe Netherlands

Low-carbon economic development is at the heart of the post-pandemic green recovery scheme *** requires economic recovery without compromising on the environment,implying a critical role that green productivity plays in achieving the carbon neutrality *** productivity measures the quality of economic growth with consideration for energy consumption and environmental *** study employs the slacks-based measure directional distance function(SBM-DDF)approach and the Malmquist-Luenberger(ML)index to calculate green productivity and its components of 30 provinces in China between 2001 and *** a spatial panel data model,we empirically analyzed the conditionalβ-convergence of China's green *** found that overall,since 2001,China's green productivity has demonstrated a continuous upward *** taking into account spatial factors,China's green productivity demonstrates a significant conditionalβ-*** terms of regional effects,the results indicate that the green productivity of the eastern and western regions demonstrates club convergence,implying a more balanced green economic ***,the convergence rate of China's green productivity increases with the addition of environmental regulation variable,and so the corresponding convergence time *** indicates that environmental regulations help to facilitate the convergence of China's green productivity,narrowing the gap between the regional green economic *** findings provide guideline for achieving a low-carbon development and carbon neutrality from a regional green productivity perspective.

关键词： Green productivity Slacks-based measure of directional distance function(SBM-DDF) Malmquist-Luenberger(ML)index Conditionalβ-convergence Spatial econometrics Carbon neutrality

Oxidative stress,epigenetic regulation and pathological processes of lens epithelial cells underlying diabetic cataract

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Advances in Ophthalmology Practice and Research 2023年第4期3卷 180-186页

作者： Zaoxia Guo Xiaopan Ma rui xue Zhang Hong Yan Shaanxi Eye Hospital Xi'an People's Hospital(Xi'an Fourth Hospital)Affiliated People's Hospital of Northwest UniversityXi'anShaanxiChina Xi'an Key Laboratory of Stem Cell and Regenerative Medicine Institute of Medical ResearchNorthwestern Polytechnical UniversityXi'anShaanxiChina

Background:Cataract is a blinding disease *** is an age-related disease that mainly occurs in people over 65 years *** is also prevalent in patients with diabetes mellites(DM).The pathological mechanisms underlying diabetic cataract(DC)are more complex than that of age-related *** have identified that polyol pathway,advanced glycation end products(AGEs)and oxidative stress are the primary pathogenesis of *** recent years,molecular-level regulations and pathological processes of lens epithelial cells(LECs)have been confirmed to play roles in the initiation and progression of DC.A comprehensive understanding and elucidation of how chronic hyperglycemia drives molecular-level regulations and cytopathological processes in the lens will shed lights on the prevention,delay and treatment of *** text:Excessive glucose in the lens enhances polyol pathway and AGEs *** pathway causes imbalance in the ratio of NADPH/NADPt and NADH/*** in NADPH/NADPt ratio compromises antioxidant enzymes,while increase in NADH/NADt ratio promotes reactive oxygen species(ROS)overproduction in mitochondria,resulting in oxidative *** stress in the lens causes oxidation of DNA,proteins and lipids,leading to abnormalities in their structure and *** of proteins by AGEs decreases solubility of *** glucose triggered epigenetic regulations directly or indirectly affect expressions of genes and proteins in *** in autophagic activity,increases in fibrosis and apoptosis of LECs destroy the morphological structure and physiological functions of the lens epithelium,disrupting lens ***:In both diabetic animal models and diabetics,oxidative stress plays crucial roles in the formation of *** regulations,include lncRNA,circRNA,microRNA,methylation of RNA and DNA,histone acetylation and pathological processes,include autophagy,fibrosis and apoptosis of LECs also involved i

关键词： Oxidative stress Epigenetic regulation Autophagy Fibrosis Apoptosis Diabetic cataract

Electronic structure and optical properties of the scintillation material wurtzite ZnS(Ag)

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Nuclear Science and Techniques 2017年第3期28卷 35-41页

作者： Dong-Yang Jiang Zheng Zhang rui-xue Liang Zhi-Hong Zhang Yang Li Qiang Zhao Xiao-Ping Ouyang Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy School of Nuclear Science and EngineeringNorth China Electric Power University Beijing 102206China School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China Northwest Institute of Nuclear Technology Xi’an 710024China School of Materials Science and Engineering Xiangtan University Xiangtan 411105 China

In order to investigate the effect of Ag doping(ZnS(Ag)) and Zn vacancy(V_(Zn)) on the alpha particle detection performance of wurtzite(WZ) ZnS as a scintillation cell component, the electronic structure and optical properties of ZnS, ZnS(Ag), and V_(Zn)were studied by firstprinciple calculation based on the density functional theory. The results show that the band gaps of ZnS, ZnS(Ag),and V_(Zn)are 2.17, 1.79, and 2.37 eV, respectively. Both ZnS(Ag) and V_(Zn)enhance the absorption and reflection of the low energy photons. A specific energy, about 2.9 eV,leading to decrease of detection efficiency is observed. The results indicate that Ag doping has a complex effect on the detection performance. It is beneficial to produce more visible light photons than pure WZ ZnS when exposed to the same amount of radiation, while the increase of the absorption to visible light photons weakens the detection performance. Zn vacancy has negative effect on the detection performance. If we want to improve the detection performance of WZ ZnS, Ag doping will be a good way,but we should reduce the absorption to visible light photons and control the number of Zn vacancy rigorously.

关键词： Wurtzite ZnS Electronic structure Optical properties First-principle

Reliability analysis of large-diameter high-grade-steel natural gas pipelines under fault action

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Petroleum Science 2022年第5期19卷 2387-2398页

作者： Xiao-Ting Gu xue-rui Zang Zhen-Yong Zhang Peng Yang Wen-Zhen Miao Ping Cao Bin Zhao School of Petroleum Engineering Yangtze UniversityWuhan430100HubeiChina Key Laboratory of Drilling and Production Engineering for Oil and Gas Wuhan430100HubeiChina College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao266580ShandongChina China Petroleum Pipeline Engineering Corporation Langfang065000HebeiChina China Petroleum Pipeline Engineering Co. Ltd.Langfang065000HebeiChina Sinopec Zhongyuan Petroleum Engineering Design Co. Ltd.Zhengzhou450000HenanChina Sinopec Jianghan Petroleum Engineering Design Co. Ltd.Wuhan430223HubeiChina College of Geophysics and Oil Resources Yangtze UniversityWuhan430100HubeiChina

There are a lot of researches on qualitative aseismatic measures for buried gas pipeline crossing movable *** a few of them are quantitative,especially in the size and shape of the *** paper first established the finite element model of the strain of buried pipeline crossing a fault which effected by the size and shape of the *** it obtained new soil spring stiffness which considered different buried depth,bottom width of trench,trench slope and elastic modulus of *** mechanical analysis model of pipeline is established,and the limit state equation of pipeline is *** reliability and sensitivity of the natural gas pipeline under fault action are analysed by a Monte Carlo method,and the error and accuracy are *** the pipeline is under tension,the sensitivity from large to small is buried depth,sand friction angle,pipe diameter,pipeline displacement,trench bottom width,trench depth,clay cohesion,trench slope and clay friction angle;when the pipeline is under pressure,the trench depth and clay cohesion have great *** findings of this study provide a reference for pipeline design and safety evaluation under fault action.

关键词： Trench parameters Natural gas pipeline Fault Soil-pipeline interaction Soil spring stiffness

In-situ mineralization of chitosan/calcium phosphate composite and the effect of solvent on the structure

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Frontiers of Computer Science 2011年第3期5卷 282-292页

作者： Ling-Hao HE Lu YAO rui xue Jing SUN rui SONG State Key Laboratory of Surface ＆ Interface Science of Henan Provincial Zhengzhou University of Light Industry Zhengzhou 450002 China College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China

Solvent played an important role in the formation of calcium phosphate phase of the chitosan/calcium phosphate composites. In this investigation, ethanolacetic acid mixtures were employed as solvents, and various calcium phosphate phases, such as brushite, amorphous calcium phosphate, and hydroxyapatite, were introduced into the chitosan/calcium phosphate composites by using in-situ preparation process. The results showed that the structures of composite were influenced remarkably by the morphology and the distribution of calcium phosphate phase. In addition, the bioactivity of composites was governed mainly by the characters of calcium phosphate phases in composites, since calcium phosphate phases could induce the growth of hydroxyapatite coating on the surfaces of composites. On the surface of chitosan/brushite composite, the formed hydroxyapatite coating consisted of oriented plate crystallites, which self- assembled into spherical-like crystals. When other calcium phosphate phase was introduced into composites, the polymorphs of hydroxyapatite layer would change greatly. The oriented plate crystallites became bigger, and meanwhile, the self-assembled aggregates became less and smaller. In addition, with the shift of the prior nucleating point, the growth orientation of plate crystallites was transformed.

关键词： chitosan composite membrane hydroxyapatite ethanol

Lighting up nonbenzenoid acepleiadylene with ultra-narrowband emission through aromaticity modulation

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Science China Chemistry 2023年第12期66卷 3506-3510页

作者： Pengcai Liu Xiao-Yu Tang Cheng-Zhuo Du rui xue Xing-Yu Chen Jiawen Cao Xiao-Ye Wang State Key Laboratory of Elemento-Organic Chemistry Frontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjin 300071China

Nonbenzenoid polycyclic arenes have attracted great attention because of their unique topological structures and appealing properties;however,they are generally considered as poor luminescent materials due to the ring puckering behavior of the ***(APD),a nonbenzenoid isomer of pyrene,has been demonstrated as an excellent building block for optoelectronic applications,but its poor photoluminescence quantum yield(PLQY)has hampered its application in luminescent *** that the ring puckering character can be suppressed by increasing the rigidity of the nonhexagon rings,herein,we propose a novel strategy for enhancing the aromaticity of the nonhexagons to improve the PLQYs of APD ***-withdrawing cyano groups are introduced on the five-membered ring of APD to enhance the chargeseparated character and thus the aromaticity of the nonhexagons,endowing the cyano-substituted APDs(CNAPD and 2CNAPD)with better ***,the cyano substitution successfully suppresses the nonradiative energy dissipation caused by the ring puckering,improving the PLQY from 2.4%for APD to 14%for CNAPD,and to 63%for *** addition,the enhanced rigidity also suppresses the vibration sideband of the photoluminescence spectra,leading to an ultra-narrowband emission from 2CNAPD with a full-width at half-maximum(FWHM)of 13 nm(47 me V),which is a new record in organic *** results demonstrate that APD derivatives have great potential in highly efficient luminescent materials with high color purity via the aromaticity regulation strategy,which provides a novel concept for designing nonbenzenoid luminescent materials.

关键词： nonbenzenoid arenes luminescence narrowband emission acepleiadylene

Microstructure and mechanical properties of nickel-based superalloy fabricated by laser powder-bed fusion using recycled powders

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International Journal of Minerals,Metallurgy and Materials 2021年第2期28卷 266-278页

作者： De-cheng Kong Chao-fang Dong Xiao-qing Ni Liang Zhang rui-xue Li Xing He Cheng Man Xiao-gang Li Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Shanghai Engineering Research Center of 3D Printing Materials Shanghai Research Institute of MaterialsShanghai 200437China School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

Evaluating the recyclability of powders in additive manufacturing has been a long-term *** this study,the microstructure and mechanical properties of a nickel-based superalloy fabricated by laser powder-bed fusion(LPBF)using recycled powders were ***-melted powder surfaces,satellite particles,and deformed powders were found in the recycled powders,combined with a high-oxygencontent surface *** increasing oxygen content led to the formation of high-density oxide inclusions;moreover,printing-induced cracks widely occurred and mainly formed along the grain boundaries in the as-built LPBF nickel-based superalloys fabricated using recycled powders.A little change in the Si or Mn content did not increase the hot cracking susceptibility(HCS)of the printed *** changing aspect ratio and the surface damage of the recycled powders might contribute to increasing the crack ***,the configuration of cracks in the as-built parts led to anisotropic mechanical properties,mainly resulting in extremely low ductility vertical to the building direction,and the cracks mainly propagated along the cellular boundary owing to the existence of a brittle precipitation phase.

关键词： laser powder-bed fusion recycled powder cracking anisotropy nickel-based superalloy

Low-Temperature Growing Anatase TiO2/SnO2 Multi-dimensional Heterojunctions at MXene Conductive Network for High-Efficient Perovskite Solar Cells

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Nano-Micro Letters 2020年第3期12卷 199-217页

作者： Linsheng Huang Xiaowen Zhou rui xue Pengfei Xu Siliang Wang Chao Xu Wei Zeng Yi Xiong Hongqian Sang Dong Liang National Engineering Research Center for Agro‑Ecological Big Data Analysis and Application School of Electronics and Information EngineeringAnhui UniversityNo.111 Jiulong RoadHefei 230601People’s Republic of China Science and Technology Institute Hubei Key Laboratory of Biomass Fibers and Eco‑Dyeing and FinishingWuhan Textile UniversityWuhan 430073People’s Republic of China School of Physics and Technology MOE Key Laboratory of Artificial Micro‑and Nano‑Structures and Center for Electron MicroscopyWuhan UniversityWuhan 430072People’s Republic of China Department of Physics King’s College LondonThe StrandLondon WC2R 2LSUK

A multi-dimensional conductive heterojunction structure,composited by TiO2,SnO2,and Ti3C2TX MXene,is facilely designed and applied as electron transport layer in efficient and stable planar perovskite solar *** on an oxygen vacancy scramble effect,the zero-dimensional anatase TiO2 quantum dots,surrounding on two-dimensional conductive Ti3C2TX sheets,are in situ rooted on three-dimensional SnO2 nanoparticles,constructing nanoscale TiO2/SnO2 *** fabrication is implemented in a controlled lowtemperature anneal method in air and then in N2 *** the optimal MXene content,the optical property,the crystallinity of perovskite layer,and internal interfaces are all facilitated,contributing more amount of carrier with effective and rapid transferring in *** champion power conversion efficiency of resultant perovskite solar cells achieves 19.14%,yet that of counterpart is just 16.83%.In addition,it can also maintain almost 85%of its initial performance for more than 45 days in 30–40%humidity air;comparatively,the counterpart declines to just below 75%of its initial performance.

关键词： In situ fabrication Multi-dimensional heterojunction Oxygen vacancy scramble effect Electron transport layer Perovskite solar cells

Thermoelectric transport properties and structure of Mg_2Si_(0.8)Sn_(0.2)prepared by ECAS under different current intensities

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Rare Metals 2014年第2期33卷 215-218页

作者： Wen-Hao Fan Yuan-Yuan Jiao rui-xue Chen Di-Yang Wu Qing-Sen Meng Shao-Ping Chen Department of Material Science and Engineering Taiyuan University of Technology

Thermoelectric materials Mg2Si0.8Sn0.2 were sintered under three different conditions including no electricity sintering（NCS）, low electricity sintering（LCS）,and high electricity sintering（HCS）. Thermoelectric performance and microstructure of three group samples were measured and compared. The results indicate that the application of electric current during the sintering process changes the microstructure and significantly increases the density of samples, and increases the electric conductivity and the power factor. The electric current activated/assisted sintering is an effective way to obtain thermoelectric materials with excellent performance.

关键词： Thermoelectric materials Mg2Si0.8Sn0.2 ECAS Electric current