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Path of Rural Vitalization Based on Coupling Perspective of Township Construction and Resource Environment in Jiangsu Province,China

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中国地理科学:英文版 2023年第5期33卷 833-849页

作者： KANG Jiayu DUAN Xuejun ma zhiyuan Nanjing Institute of Geography and Limnology Chinese Academy of SciencesNanjing 210008China Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Recently,the field of rural vitalization has received extensive research attention.However,only few studies have proposed an approach to rural vitalization from the coupling perspective of township construction and the resource environment.Taking Jiangsu Province of China as the study area,we constructed index systems of township construction function types and resource environments.Based on 875 township study units in Jiangsu,we characterized the township construction function type and resource environment and analyzed the dynamic process of their coupling from 2005 to 2017.The results are as follows:1)the townships of planting and breeding types in Jiangsu were mainly distributed in northern and central Jiangsu;the townships of business travel,industry,and integrated types were mainly distributed in southern Jiangsu;and the townships of ecological type were irregularly distributed throughout Jiangsu.2)Resource environment factors and township construction function types in Jiangsu clustered based on their location with some overlap.3)Spatial variability in the degree of coupling level between township construction and the resource environment in Jiangsu was not apparent,and low coupling levels accounted for most of the study units.The sum of the number of medium and high coupling townships in southern,central,and northern Jiangsu was roughly equal,and the coupling level between township construction and the resource environment in southern Jiangsu evolved remained unchanged,whereas that in the central and northern Jiangsu became imbalanced.4)In Jiangsu,township construction was mainly constrained by water resources,and the constraint parameters gradually increase.Large variability in resource environment constraint was observed in northern,central,and southern Jiangsu for different township construction function types.Based on these findings,we proposed the implementation of targeted rural vitalization strategies.

关键词： township construction function type resource environment coupling level rural vitalization path Jiangsu Province,China

Unraveling high efficiency multi-step sodium storage and bidirectional redox kinetics synergy mechanism of cobalt-doping vanadium disulfide anode

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Journal of Energy Chemistry 2024年第7期94卷 148-157页

作者： Enzhi Li Mingshan Wang Yuanlong Feng Lin Yang Qian Li Zhenliang Yang Junchen Chen Bo Yu Bingshu Guo zhiyuan ma Yun Huang Jiangtao Liu Xing Li School of New Energy and materials Southwest Petroleum UniversityChengdu 610500SichuanChina Institute of materials China Academy of Engineering PhysicsMianyang 621908SichuanChina State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina school of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Sodium-based storage devices based on conversion-type metal sulfide anodes have attracted great atten-tion due to their multivalent ion redox reaction ability.However,they also suffer from sodium polysul-fides(NaPSs)shuttling problems during the sluggish Na^(+)redox process,leading to"voltage failure"and rapid capacity decay.Herein,a metal cobalt-doping vanadium disulfide(Co-vS_(2))is proposed to simulta-neously accelerate the electrochemical reaction of vS_(2) and enhance the bidirectional redox of soluble NaPSs.It is found that the strong adsorption of NaPSs by V-Co alloy nanoparticles formed in situ during the conversion reaction of Co-VS_(2) can effectively inhibit the dissolution and shuttle of NaPSs,and ther-modynamically reduce the formation energy barrier of the reaction path to effectively drive the complete conversion reaction,while the metal transition of Co elements enhances reconversion kinetics to achieve high reversibility.Moreover,Co-VS_(2) also produce abundant sulfur vacancies and unsaturated sulfur edge defects,significantly improve ionic/electron diffusion kinetics.Therefore,the Co-VS_(2) anode exhibits ultrahigh rate capability(562 ma h g^(-1) at 5 A g^(-1)),high initial coulombic efficiency(~90%)and 12,000 ultralong cycle life with capacity retention of 90%in sodium-ion batteries(SIBs),as well as impressive energy/power density(118 Wh kg^(-1)/31,250 W kg^(-1))and over 10.000 stable cycles in sodium-ion hybrid capacitors(SIHCs).Moreover,the pouch cell-type SIHC displays a high-energy density of 102 Wh kg^(-1) and exceed 600 stable cycles.This work deepens the understanding of the electrochem-ical reaction mechanism of conversion-type metal sulfide anodes and provides a valuable solution to the shuttlingofNaPSs inSIBsandSIHCs.

关键词： Sodium-ionbatteries Sodium-ion hybrid capacitors Pouch cells Vanadium disulfide Shuttle effect

Modularized sulfur storage achieved by 100% space utilization host for high performance lithium-sulfur batteries

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Chinese Chemical Letters 2024年第4期35卷 237-243页

作者： Jun Jiang Tong Guo Wuxin Bai Mingliang Liu Shujun Liu Zhijie Qi Jingwen Sun Shugang Pan Aleksandr L.Vasiliev zhiyuan ma Xin Wang Junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094China Changzhou Institute of Technology Changzhou 213032China Shubnikov Institute of Crystallography Russian Academy of SciencesLeninskii pr.59Moscow 119333Russia Jiangsu Pylon Battery Co. Ltd.Yangzhou 211400China

Popularization of lithium-sulfur batteries(LSBs) is still hindered by shuttle effect and volume expansion.Herein, a new modularized sulfur storage strategy is proposed to solve above problems and accomplished via employing 100% space utilization host material of cobalt loaded carbon nanoparticles derived from ZIF-67. The modular dispersed storage of sulfur not only greatly increases the proportion of active sulfur,but also inhibits the occurrence of volume expansion. Meanwhile, 100% space utilization host material can greatly improve the conductivity of the cathode, provide a larger electrolyte wetting interface and effectively suppress the shuttle effect. Moreover, loaded cobalt particles have high catalytic activity for electrochemical reaction and can effectively improve the redox kinetics. The cell with new cathode host material carbonized at 650 ℃(ZIF-67(650 ℃)) exhibits superior rate performance and can maintain a high specific capacity of 950 m Ah/g after 100 cycles at 0.2 C, showing a good cycle stability.

关键词： Modularized sulfur storage Space utilization Cathode host material ZIF-67 Lithium-sulfur batteries

The Impacts and Adaptation of Climate Extremes on the Power System:Insights from the Texas Power Outage Caused by Extreme Cold Wave

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Chinese Journal of Urban and Environmental Studies 2022年第1期10卷 61-76页

作者： ma zhiyuan ZHAO Zijian LIU Changyi YANG Fang WANG Mou Global Energy Interconnection Development and Cooperation Organization (GEIDCO) Research Centre for Sustainable Development Chinese Academy of Social Sciences University of Chinese Academy of Social Sciences Research Institute for Eco-civilization Chinese Academy of Social Sciences

Along with the aggravation of climate change, various weather and climate extreme events(abbreviated as climate extremes) are becoming more frequent. During the transition to the use of clean energy, the power system will show increasingly prominent features such as high ratio of clean energy, high ratio of electrification, and a high proportion of electric and electronic equipment, coupled with summer and winter load peaks. Against this backdrop, this paper studies the impacts of climate extremes on the power system using the Texas power outage as an example,and proposes general adaptation measures to cope with climate extremes. For a start, this paper reviews the power outage in Texas caused by an extreme cold wave across the North America in 2021, and conducts an in-depth analysis of its causes. Then, based on the theoretical framework of disaster risk management, this paper analyzes the weather and climate disaster risks, extreme events, exposure, and vulnerability faced by the power system in the context of climate change and extreme events. Finally, in order to build a new power system, this paper establishes an overall framework for the power system to mitigate and adapt to climate change, and summarizes the key techniques involved in power generation, transmission, distribution, and consumption, as well as key technologies in the fields of power supply, power grid, power load, and energy storage, and the strategies and measures for addressing climate change.

关键词： Weather and climate extremes climate change power system mitigation adaptation

Study of the Carbon Neutral Path in China: A Literature Review

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Chinese Journal of Urban and Environmental Studies 2023年第2期11卷 21-43页

作者： HOU Fangxin LIU Yifang ma zhiyuan LIU Changyi ZHANG Shining YANG Fang NIE Yuanhong Global Energy Interconnection Group Co. Ltd Economic Research Institute State Grid Anhui Electric Power Co. Ltd

After the carbon peaking and carbon neutrality goals were proposed, different institutions and scholars carried out research on China’s medium-and long-term mitigation pathways. Through the literature review of China’s research on carbon neutrality, this paper finds that the zero-carbon energy transition is the key to achieving carbon neutrality. The main driving factors of reducing energy-related carbon emissions include the cleanliness of primary and secondary energy supply systems, the electrification of energy consumption and the development of hydrogen energy,energy efficiency improvement, carbon capture and storage(CCS), and negative emissions.Furthermore, based on the literature, this paper conducts a quantitative comparative analysis, and selects key indicators for comparative analysis and summary from seven dimensions, including economic and social development, carbon emission pathways, primary energy consumption, final energy consumption, final hydrogen energy consumption, electricity demand and supply, and installed capacity and structure of power generation. main conclusions are as follows:(i) In terms of carbon emission pathways, the institutions generally believed that China will peak carbon emissions around 2028 and achieve carbon neutrality between 2050 and 2060. Achieving net-zero or near-zero emissions first in the power sector is the key to carbon neutrality across the society;(ii) In terms of energy supply, it is a consensus to increase the proportion of clean energy and reduce carbon emissions from the source. The proportion of clean energy in primary energy will increase to more than 85%, and the proportion of clean energy power generation and installed capacity will reach more than 90%;(iii) In terms of energy use, electricity will become the core of final energy consumption in the future. The predicted electricity consumption across the society will range 14.3–18.4 PWh, and the predicted electrification rate will exceed 65%.

关键词： Carbon peaking carbon neutrality cleanliness electrification

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高黏度油浆脱固技术探索

石油炼制与化工 2024年第6期55卷 18-23页

作者：刘建新马致远中海石油中捷石化有限公司河北沧州061100

催化裂化外甩油浆(简称油浆)中的催化剂固体颗粒是影响其理化性质和高值化利用的瓶颈,因而油浆脱固技术成为油浆高值化深加工的关键突破口。鉴于目前主流的油浆脱固方法——药剂沉降法对高黏度油浆的脱固效果并不理想,以国内某炼油厂的... 详细信息

催化裂化外甩油浆(简称油浆)中的催化剂固体颗粒是影响其理化性质和高值化利用的瓶颈,因而油浆脱固技术成为油浆高值化深加工的关键突破口。鉴于目前主流的油浆脱固方法——药剂沉降法对高黏度油浆的脱固效果并不理想,以国内某炼油厂的油浆Z为研究对象,通过调节温度、引入稀释组分、加入黏度改性剂等方式改变油浆黏度,从而有效实现了高黏度油浆脱固。结果表明,将温度升高到130℃或加入质量分数0.1%的黏度改性剂,可将油浆脱固率提高到80%以上;通过加入柴油或芳烃溶剂油等稀释组分,可将油浆脱固率提高到95%以上。

关键词：催化裂化油浆脱固率黏度黏度改性剂

分布式协商:协商代表驱动乡村高质量协商的内在逻辑——以华中S村为例

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探索 2024年第2期 30-43页

作者：张大维马致远华中师范大学中国农村研究院湖北武汉430079

乡村协商民主是全过程人民民主的重要实践形式,而协商代表作为乡村协商中的能动因素对乡村协商质量具有显著影响,但具体的影响机制和作用条件尚缺乏足够的讨论。通过建构分布式协商的概念框架,试图在“结构—过程—功能”三维视角下考... 详细信息

乡村协商民主是全过程人民民主的重要实践形式,而协商代表作为乡村协商中的能动因素对乡村协商质量具有显著影响,但具体的影响机制和作用条件尚缺乏足够的讨论。通过建构分布式协商的概念框架,试图在“结构—过程—功能”三维视角下考察协商代表驱动乡村高质量协商的影响因素和逻辑机制。基于对华中S村L湾组协商推动绿植项目落地的调查,发现协商代表需要在对象、主体、内容、方式四个维度形成分布衔接的代表结构,以解决协商代表结构产生的规范性问题。同时,还要通过设置分类议题、分层单元、分步递进的多元化协商形态,将“代表链条”有机嵌入具体的协商进程之中,以实现结构性的代表链条与过程性的协商形态深度融合。由此在协商的系统层面上实现主体的包容性、环节的衔接性、要素的多样性的协商功能,趋向于形成一种乡村高质量协商的实然状态。分布式协商是中国基层代表治理的有益探索,其内含的协商代表与协商形态双向互嵌所呈现出的高质量协商是乡村全过程人民民主的生动呈现。而乡村协商代表作为中国基层治理现代化研究中新的生长点和延伸点,既是对传统代表研究的深化拓展,也是对西方代表理论的超越,将不断丰富和拓展全过程人民民主的理论内涵和实践形态。

关键词：协商代表协商系统高质量协商分布式协商乡村振兴

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融合语义与结构信息的知识图谱补全模型研究

数据分析与知识发现 2024年第4期8卷 39-49页

作者：马志远高颖张强周洪李兵陶皖安徽工程大学计算机与信息学院芜湖241000 华中师范大学信息管理学院武汉430079 中国科学院武汉文献情报中心武汉430071 科学技术部科技人才交流开发服务中心北京100045

【目的】针对知识图谱补全任务,挖掘语义与结构信息,完善知识图谱并提升质量与可靠性。【方法】提出一种融合语义与结构信息的知识图谱补全模型,通过预训练语言模型增强知识图谱内文本及上下文数据的嵌入表示,捕获实体与关系的语义信息... 详细信息

【目的】针对知识图谱补全任务,挖掘语义与结构信息,完善知识图谱并提升质量与可靠性。【方法】提出一种融合语义与结构信息的知识图谱补全模型,通过预训练语言模型增强知识图谱内文本及上下文数据的嵌入表示,捕获实体与关系的语义信息,并构建实体-关系矩阵映射知识图谱网络结构,获取实体的邻域信息与关系约束,进一步融合潜在数据,进行模型训练并预测丢失实体,最终达成知识图谱补全任务。【结果】与基线方法性能相比,该模型的Hits@3评测指标在FB15k-237、WN18RR和UMLS数据集上分别提升0.5、0.6和0.6个百分点。【局限】受限于语言模型的基础表示能力,未能结合多模态数据进一步提升补全任务效果。【结论】该模型具有较好的补全性能,融合语义与结构信息的方式对比其他方法具有一定优势,能够较好地完成知识图谱补全任务,对知识图谱及其下游应用的发展具有重要意义。

关键词：知识图谱补全预训练语言模型自然语言处理深度学习

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原始森林的概念、生态功能及研究进展

林业科学 2024年第4期60卷 173-182页

作者：龚金玉马致远胡琛李田雷静品中国林业科学研究院林业研究所、国家林业局和草原局林木培育重点实验室北京100091 南京林业大学南方现代林业协同创新中心南京210037

原始森林是指由乡土树种自然演替而成,没有明显人为干扰痕迹,生态过程没有受到明显影响的森林,其具有复杂的结构和生态功能,是自然界最稳定的碳储库和资源库,对全球气候调节及人类生存发展具有重要作用。在研究领域内明确、规范原始森... 详细信息

原始森林是指由乡土树种自然演替而成,没有明显人为干扰痕迹,生态过程没有受到明显影响的森林,其具有复杂的结构和生态功能,是自然界最稳定的碳储库和资源库,对全球气候调节及人类生存发展具有重要作用。在研究领域内明确、规范原始森林的概念和监测方法,有利于世界原始森林资源的清查、保护及监测。本研究在梳理国内外原始森林概念的基础上,归纳总结了原始森林特征,分析了国内外原始森林资源清查和监测的现状,综述了原始森林的重要生态功能:1)原始森林固碳能力存在的碳中性、碳源及碳库假说;2)原始森林具有优于其他森林的水文调节功能;3)原始森林是物种基因库,具有突出的生物多样性保护功能。基于目前对原始森林概念和监测中存在的问题,提出未来研究建议:在森林资源清查中将原始森林单独分类;加大对原始森林生态功能研究,开展原始森林固碳潜力、土壤呼吸的研究;增加原始森林水文调节能力研究,探索原始森林在缓解全球气候变化中的作用;探究原始森林生物多样性保护功能,减少全球生物多样性丧失。

关键词：原始森林天然林概念生态功能可持续经营