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Investment risk evaluation of existing building energy-saving renovation project for ESCO

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Ecological Economy 2018年第3期11卷 180-189页

作者： GUO Han-ding ZHANG Yin-xian wu si-cai SHANG Ling School of Economic and Management Tianjin Chengjian University Eco livable City and Sustainable Construction Management Research Center Tianjin Chengjian University

The investment risk management of the existing building energy-saving renovation project for ESCO cannot be separated from the scientific risk measurement and evaluation. The investment risk assessment is the basis of investment decision and project implementation. Based on the content analysis and balance of evaluation principle of investment risk evaluation on the existing building energy-saving renovation project, we set up three levels of existing building energy-saving renovation project investment risk evaluation index system, use fuzzy comprehensive evaluation method to evaluate the quantitative process, get the scientific assessment of the investment risk of existing building energy-saving renovation project, and support the investment risk response strategy and control measures of existing building energy-saving renovation project for ESCO.

关键词： ESCO existing building energy-saving renovation investment risk evaluation system fuzzy comprehensive evaluation

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang wu Linke cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

基于SEM的既有建筑节能改造项目收益分配影响因素

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土木工程与管理学报 2018年第1期35卷 130-137页

作者：吴思材郭汉丁郑悦红陈思敏天津城建大学经济与管理学院天津300384

既有建筑节能改造项目收益分配决定项目的成败,探究项目收益分配的影响因素具有重要价值。在对既有建筑节能改造项目收益分配内涵分析的基础上,将项目收益分配的影响因素归纳为综合效益、主体关系、政府政策、项目特性、业主行为特征、... 详细信息

既有建筑节能改造项目收益分配决定项目的成败,探究项目收益分配的影响因素具有重要价值。在对既有建筑节能改造项目收益分配内涵分析的基础上,将项目收益分配的影响因素归纳为综合效益、主体关系、政府政策、项目特性、业主行为特征、节能服务公司行为特征,并据此构建了既有建筑节能改造项目收益分配影响因素概念模型,基于问卷调查获取139份有效数据,利用结构方程模型进行实证研究。研究结果表明:业主行为是影响既有建筑节能改造项目收益分配的关键因素;主体关系与综合效益在项目收益分配过程中发挥部分中介作用。基于实证分析结论,提出收益分配优化策略,以期为既有建筑节能改造项目收益分配的科学决策提供参考。

关键词：既有建筑节能改造收益分配影响因素结构方程模型

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公平视域下PPP项目收益分配

土木工程与管理学报 2018年第2期35卷 181-188页

作者：吴思材郭汉丁郑悦红陈思敏天津城建大学经济与管理学院天津300384 天津城建大学生态宜居城市与可持续建设管理研究中心天津300384

PPP项目时间和地域跨度大,影响范围广,涉及利益群体众多,合理协调PPP项目参与方公共部门与私人部门之间的收益分配问题是保障项目成功运行,实现项目整体效益最大化的关键。本文基于公平视角,界定PPP项目收益分享时段,分别从低需求、中... 详细信息

PPP项目时间和地域跨度大,影响范围广,涉及利益群体众多,合理协调PPP项目参与方公共部门与私人部门之间的收益分配问题是保障项目成功运行,实现项目整体效益最大化的关键。本文基于公平视角,界定PPP项目收益分享时段,分别从低需求、中等需求和高需求3种不同市场需求着手,分析不同市场需求层次下公共部门和私人部门的收益函数;建立PPP项目贡献度评价指标体系,利用有序加权算子法(OWA)与模糊综合评判法相结合就公共部门和私人部门对PPP项目的价值贡献进行评价,并以此为基础,运用熵理论构造基于公平导向的PPP项目收益分配模型,得出公私双方的收益分配比例及其变化规律,以期为PPP项目收益分配科学决策提供参考。

关键词： PPP 公平视域收益分配有序加权算子模糊综合评判熵理论

既有建筑节能改造主体社会责任共担机理研究综述

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科技和产业 2017年第7期17卷 55-61页

作者：陈思敏郭汉丁吴思材郑悦红天津城建大学经济与管理学院生态宜居城市与可持续建设管理研究中心天津300384

既有建筑节能改造多方主体共同承担社会责任是提高节能改造综合效益的内在要求。概述了国内外一般企业履行社会责任的理论研究成果;总结了国外一般企业履行社会责任的实践经验;梳理了我国一般企业履行社会责任的实践进展,剖析了我国一... 详细信息

既有建筑节能改造多方主体共同承担社会责任是提高节能改造综合效益的内在要求。概述了国内外一般企业履行社会责任的理论研究成果;总结了国外一般企业履行社会责任的实践经验;梳理了我国一般企业履行社会责任的实践进展,剖析了我国一般企业履行社会责任存在的问题;分析了既有建筑节能改造的市场运行、项目实施和运作模式的特殊性,提出了既有建筑节能改造主体社会责任共担机理的研究方向。

关键词：既有建筑节能改造社会责任研究动态实践分析

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan wu Zhiqin Ruan Yue‑Peng cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

国内外既有建筑节能改造融资理论与实践研究动态

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建筑节能 2017年第10期45卷 107-110,131页

作者：郑悦红郭汉丁陈思敏吴思材天津城建大学经济与管理学院天津300384

融资活动是我国实施既有建筑节能改造不可或缺的重要环节。从融资激励政策、融资风险、融资收益、监管机制等4个不同层面总结了国外既有建筑节能改造融资理论研究成果;从融资障碍、融资风险、融资模式、融资渠道等4个方面概述了我国既... 详细信息

融资活动是我国实施既有建筑节能改造不可或缺的重要环节。从融资激励政策、融资风险、融资收益、监管机制等4个不同层面总结了国外既有建筑节能改造融资理论研究成果;从融资障碍、融资风险、融资模式、融资渠道等4个方面概述了我国既有建筑节能改造融资理论研究动态;剖析了国内外既有建筑节能改造融资运行实践现状及问题。提出了基于市场治理视角的既有建筑节能改造融资平台优化机理研究方向。

关键词：既有建筑节能改造融资理论与实践

Fault-Induced Coal Burst Mechanism under Mining-Induced Static and Dynamic Stresses

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Engineering 2021年第5期7卷 687-700页

作者： wu cai Linming Dou Guangyao si Yawei Hu State Key Laboratory of Coal Resources and Safe Mining School of MinesChina University of Mining and TechnologyXuzhou 221116China Department of Earth Science and Engineering Royal School of MinesImperial College LondonLondon SW72AZUK School of Minerals and Energy Resources Engineering University of New South WalesSydneyNSW 2052Australia

Fault is a common geological structure that has been revealed in the process of underground coal excavation and *** nature of its discontinuous structure controls the deformation,damage,and mechanics of the coal or rock *** interaction between this discontinuous structure and mining activities is a key factor that dominates fault reactivation and the coal burst it can *** paper first summarizes investigations into the relationships between coal mining layouts and fault occurrences,along with relevant conceptual models for fault ***,it proposes mechanisms of fault reactivation and its induced coal burst based on the superposition of static and dynamic stresses,which include two kinds of fault reactivations from:mining-induced quasi-static stress(FRMSS)-dominated and seismic-based dynamic stress(FRSDS)-*** two kinds of fault reactivations are then validated by the results of experimental investigations,numerical modeling,and in situ microseismic *** this basis,monitoring methods and prevention strategies for fault-induced coal burst are discussed and *** results show that fault-induced coal burst is triggered by the superposition of high static stress in the fault pillar and dynamic stress from fault *** static stress comes from the interaction of the fault and the roof structure,and dynamic stress can be ascribed to FRMSS and *** results in this paper could be of great significance in guiding the monitoring and prevention of fault-induced coal bursts.

关键词： Coal burst Fault reactivation Mining-induced stress Seismic-based dynamic stress Fault pillar

Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao Tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui wu Shuize Wang Guilin wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound