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Alloxazine as anode material for high-performance aqueous ammonium-ion battery

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Nano Research 2022年第3期15卷 2047-2051页

作者： Yuan Ma Tianjiang Sun Qingshun Nian Shibing Zheng Tao Ma Qiaoran Wang Haihui Du Zhanliang Tao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Hefei National Laboratory for Physical Science at the Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Aqueous ammonium-ion battery(AAIB)has attracted much attention due to its low cost,safety,and environmental friendliness,but its electrode materials have many limitations.Here,alloxazine(ALO)is introduced as the anode for the AAIB.With its pseudocapacitive effect and fast diffusion kinetics of NH4+,ALO anode shows excellent rate performance with a specific capacity of 120 mAh/g at 40 C(10 A/g).The full battery is further fabricated by ALO anode and Prussian white analogs cathode.Its specific capacity can reach 110 mAh/g and it can work up to 10,000 cycles with no obvious capacity fading at 20 C(5 A/g).In addition,the system delivers a high energy density of 122.5 Wh/kg and a power density of 5,055 W/kg.This work broadens the application prospect of the AAIB.

关键词： aqueous ammonium-ion battery alloxazine anode material pseudocapacitive effect

Sustainability Intelligent Evaluation of Regional Microgrid Interconnection System Based on Combination Entropy Weight Rank Order-TOPSIS and NILA-KELM

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Energy Engineering 2022年第3期119卷 1075-1101页

作者： Haichao wang Yingying Fan Weigao Meng qiaoran Yang Long Yuan(Beijing)Wind Power Engineering&Consulting Co. Ltd.Beijing100034China School of Art Hebei GEO UniversityShijiazhuang050031China Strategy and Management Base of Mineral Resources in Hebei Province Hebei GEO UniversityShijiazhuang050031China School of Urban Geology and Engineering Hebei GEO UniversityShijiazhuang050031China School of Management Hebei GEO UniversityShijiazhuang050031China

Sustainability evaluation of regional microgrid interconnection system is conducive to a profound and comprehensive understanding of the impact of interconnection system projects.In order to realize the comprehensive and scientific intelligent evaluation of the system,this paper proposes an evaluation model based on combination entropy weight rank order-technique for order preference by similarity to an ideal solution(TOPSIS)and Niche Immune Lion Algorithm-Extreme Learning Machine with Kernel(NILAKELM).Firstly,the sustainability evaluation indicator system of the regional microgrid interconnection system is constructed fromfour aspects of economic,environmental,social,and technical characteristics,and the evaluation indicators are explained.Then,the classical evaluationmodel based on TOPSIS is constructed,and the entropy weight method and rank order method(RO)are coupled to obtain the indicator weight.The niche immune algorithm is used to improve the lion algorithm,and the improved lion algorithm is used to optimize the parameters of KELM,and the intelligent evaluation model based on NILA-KELM is obtained to realize fast real-time calculation.Finally,the scientificity and accuracy of themodel proposed in this paper are verified.The model proposed in this paper has the lowest RMSE,MAE and RE values,indicating that its intelligent evaluation results are the most accurate.This study is conducive to the horizontal comparison of the overall performance of regional microgrid interconnection system projects,helps investors to choose the most promising project scheme,and helps the government to find feasible project.

关键词： Regional microgrid interconnection system intelligent evaluation of sustainability combination entropy weight rank order TOPSIS NILA KELM

城市化对碳生产率的阶段性效应及其区域分异特征研究--来自中国地级市的证据

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技术经济 2021年第12期40卷 61-73页

作者：王巧然云南大学经济学院昆明650091

城市是人类生产与生活的集中地和重要载体,因而也是能源消费和碳排放的关键主体,在建设低碳城市和发展绿色经济的政策工具箱中,提高碳生产率是最重要的抓手。基于此,本文在Cobb‐Douglas成本函数基础上构建了城市化与城市碳生产率关系... 详细信息

城市是人类生产与生活的集中地和重要载体,因而也是能源消费和碳排放的关键主体,在建设低碳城市和发展绿色经济的政策工具箱中,提高碳生产率是最重要的抓手。基于此,本文在Cobb‐Douglas成本函数基础上构建了城市化与城市碳生产率关系的理论模型,并运用门槛回归检验了我国地级市层面人口城市化、土地城市化与城市碳生产率的动态关系。实证结果表明:人口城市化与土地城市化对城市碳生产率具有不同的阶段性效应,其中人口城市化与城市碳生产率呈现“强促进‐弱促进”的关系,拐点位于非农就业人口占比5.36%处;而土地城市化与城市碳生产率呈现“促进‐脱钩”的关系,拐点位于建成区面积占比1.09%处。分地区的实证结果从区域层面证明了该阶段性效应的稳健。该结论表明,当前我国大多数地级市均已越过以上两个门槛值,意味着低碳式城市化和科学合理的城市规划将是我国经济绿色低碳发展的必由之路。

关键词：城市碳生产率人口城市化土地城市化低碳城市化

Nitrogen-doped Carbon Nanospheres-Modified Graphitic Carbon Nitride with Outstanding Photocatalytic Activity

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纳微快报：英文版 2020年第2期12卷 154-168页

作者： qiaoran Liu Hao Tian Zhenghua Dai Hongqi Sun Jian Liu Zhimin Ao Shaobin wang Chen Han Shaomin Liu Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023People’s Republic of China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Engineering Edith Cowan UniversityJoondalupWA 6027Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia

Metals and metal oxides are widely used as photo/electro-catalysts for environmental remediation.However,there are many issues related to these metal-based catalysts for practical applications,such as high cost and detrimental environmental impact due to metal leaching.Carbon-based catalysts have the potential to overcome these limitations.In this study,monodisperse nitrogen-doped carbon nanospheres(NCs)were synthesized and loaded onto graphitic carbon nitride(g-C3N4,GCN)via a facile hydrothermal method for photocatalytic removal of sulfachloropyridazine(SCP).The prepared metal-free GCN-NC exhibited remarkably enhanced efficiency in SCP degradation.The nitrogen content in NC critically influences the physicochemical properties and performances of the resultant hybrids.The optimum nitrogen doping concentration was identified at 6.0 wt%.The SCP removal rates can be improved by a factor of 4.7 and 3.2,under UV and visible lights,by the GCN-NC composite due to the enhanced charge mobility and visible light harvesting.The mechanism of the improved photocatalytic performance and band structure alternation were further investigated by density functional theory(DFT)calculations.The DFT results confirm the high capability of the GCN-NC hybrids to activate the electron–hole pairs by reducing the band gap energy and efficiently separating electron/hole pairs.Superoxide and hydroxyl radicals are subsequently produced,leading to the efficient SCP removal.

关键词： N-doping Carbon sphere Graphitic carbon nitride Photocatalysis Degradation

Mechanism of actions of Oncocin, a proline- rich antimicrobial peptide, in early elongation revealed by single-molecule FRET

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Protein & Cell 2018年第10期9卷 890-895页

作者： Sijia Peng Mengyi Yang Rui Ning Sun Yang Liu Wenjuan wang qiaoran Xi Haipeng Gong Chunlai Chen School of Life Sciences Tsinghua University Beijing 100084China Tsinghua-Peking Joint Center for Life Sciences Tsinghua Univer-sity Beijing 100084 China Beijing Advanced Innovation Center for Structural Biology Ts-inghua University Beijing 100084 China MOE Key Laboratory of Bioinformatics Tsinghua UniversityBeijing 100084 China Technology Center for Protein Sciences Tsinghua UniversityBeijing 100084 China

Dear Editor Proline-rich antimicrobial peptides （PrAMPs） are a class of antimicrobial peptides containing a high content of proline residues. PrAMPs selectively target Gram-negative bacteria through special transporters such as SmbA to enter cyto- plasm （Mattiuzzo et al., 2007）. On the other hand, PrAMPs present a low toxicity to mammalian cells, because they cannot effectively penetrate the mammalian cellular mem- brane （Hansen et al., 2012） or they are internalized through an endocytotic process to minimize interaction with cytosolic ribosomes （Tomasinsig et al., 2006）. Therefore, PrAMPs are promising candidates to treat infections and to deliver drugs （Schmidt et al., 2016）.

关键词： AMINOACYL-TRANSFER-RNA PROTEIN-SYNTHESIS MAMMALIAN-CELLS RIBOSOME INHIBITION SELECTION

数字普惠金融对产业结构升级的影响及机制研究

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投资研究 2021年第9期40卷 4-14页

作者：杨虹王乔冉云南民族大学经济学院

本文基于31个省、自治区、直辖市2011—2018年的面板数据研究了数字普惠金融对产业结构升级的影响及机制。研究发现:数字普惠金融及其覆盖广度、使用深度以及数字化程度的发展都在不同程度上推动了产业结构升级;经济发展水平不同地区的... 详细信息

本文基于31个省、自治区、直辖市2011—2018年的面板数据研究了数字普惠金融对产业结构升级的影响及机制。研究发现:数字普惠金融及其覆盖广度、使用深度以及数字化程度的发展都在不同程度上推动了产业结构升级;经济发展水平不同地区的数字普惠金融对产业结构升级的促进作用具有异质性,数字普惠金融更有利于推动经济发展水平较好地区的产业结构升级,未能更好的兼顾效率和公平;在效应传导机制方面,数字普惠金融通过科技创新效应、创业效应和人力资本效应推动地区产业结构升级。

关键词：数字普惠金融产业结构升级创业效应科技创新

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蜗杆传动的加速疲劳试验方法研究

机械强度 2015年第4期37卷 712-717页

作者：白国振王巧然上海理工大学机械工程学院上海200093

基于疲劳寿命损伤理论,通过分析各级载荷对疲劳寿命的贡献,对零件损伤小的载荷,将其部分使用次数按其他载荷等级的频度分配。利用Ansys软件对蜗轮蜗杆进行动态分析,得到齿面接触应力结果;在n Code疲劳分析软件联合有限元分析结果与循环... 详细信息

基于疲劳寿命损伤理论,通过分析各级载荷对疲劳寿命的贡献,对零件损伤小的载荷,将其部分使用次数按其他载荷等级的频度分配。利用Ansys软件对蜗轮蜗杆进行动态分析,得到齿面接触应力结果;在n Code疲劳分析软件联合有限元分析结果与循环载荷时间历程,计算蜗轮蜗杆的疲劳损伤,通过试验进行验证。给出具体的计算方法,就蜗轮蜗杆的加速可靠性及可行性进行分析。

关键词：疲劳损伤加速疲劳载荷谱结构应力蜗轮蜗杆

创业者先前经验对创业绩效的影响——基于有中介的调节模型

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技术经济 2016年第6期35卷 24-34页

作者：王巧然陶小龙云南大学发展研究院昆明650091 云南大学工商管理与旅游管理学院云南650091

将创业者的学习模式(探索式学习和利用式学习)和创业能力引入创业者先前经验(创业经验、职能经验和行业经验)对创业绩效的影响路径中,建立了一个有中介的调节模型,探索创业者的先前经验对创业绩效影响的作用机理。利用来自362位创业者... 详细信息

将创业者的学习模式(探索式学习和利用式学习)和创业能力引入创业者先前经验(创业经验、职能经验和行业经验)对创业绩效的影响路径中,建立了一个有中介的调节模型,探索创业者的先前经验对创业绩效影响的作用机理。利用来自362位创业者的问卷调查数据,运用层次回归方法验证研究假设。得到如下结论:创业者先前的创业经验和行业经验对创业绩效有显著的正向影响;探索式学习正向调节了创业者先前的创业经验对创业绩效的影响;利用式学习正向调节了创业者先前的创业经验和行业经验对创业绩效的影响;创业能力对创业学习的调节作用具有完全中介作用。

关键词：先前经验创业学习创业能力创业绩效创业者

中国企业海外能源投资的区位导向:资源禀赋、发展水平抑或制度距离?

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经济与管理研究 2018年第6期39卷 122-134页

作者：杨先明王巧然云南大学发展研究院

近年来中国能源对外依存度不断增加,面对持续增长的国内能源需求和长期存在的国际能源市场风险,能源对外直接投资成为中国利用国外能源、开拓国外能源市场的重要手段。海外能源投资的区位导向是否与其他类型投资一致?本文运用负二项固... 详细信息

近年来中国能源对外依存度不断增加,面对持续增长的国内能源需求和长期存在的国际能源市场风险,能源对外直接投资成为中国利用国外能源、开拓国外能源市场的重要手段。海外能源投资的区位导向是否与其他类型投资一致?本文运用负二项固定效应回归模型,基于中国2006—2015年对57个国家的能源投资企业/项目数据,实证分析了中国企业海外能源投资区位选择的影响因素。研究发现,中国企业海外能源投资区位选择受东道国的资源禀赋优势和经济发展水平影响,并且偏好与中国制度差异较小的国家,符合"制度接近论";东道国与中国的制度距离会在一定程度上抵消东道国能源禀赋、发展水平对海外能源投资的吸引力;同时,制度距离对中国能源对外投资的区位选择呈现非对称效应,在制度质量不同的国家和地区,制度距离对中国能源对外投资具有不同的作用。本文的研究结论对"一带一路"背景下中国能源企业对外直接投资区位选择具有现实参考意义。

关键词：对外直接投资能源企业制度距离区位选择