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Inclusive wealth growth pathways within the carbon peak target for Chinese cities

Cell Reports Sustainability 2025年第4期2卷

作者： Cheng, Danyang Guan, Dabo Xue, Qianyu Shan, Yuli Huo, Jingwen Cui, Can Zhou, Ya Li, Yuan Department of Earth System Sciences Tsinghua University Beijing 100084 China The Bartlett School of Sustainable Construction University College London London United Kingdom Institute of Blue and Green Development Weihai Institute of Interdisciplinary Research Shandong University Weihai 264209 China School of Geography Earth and Environmental Sciences University of Birmingham Birmingham B15 2TT United Kingdom Institute of Energy and Process Engineering ETH Zurich Zurich 8092 Switzerland Reliability and Risk Engineering ETH Zurich Zurich 8092 Switzerland Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education School of Ecology Environment and Resources Guangdong University of Technology Guangzhou 510006 China School of the Environment Nanjing University Nanjing 210023 China

China is committed to the Sustainable development Agenda and peaking its carbon emissions by 2030. However, interactions between these two agendas and pathways to achieving both remain understudied. This study assesses the sustainability performances and carbon emission patterns of Chinese cities and analyzes their interplay. To measure sustainability, we adopt the Inclusive Wealth Index framework that looks at the productive base of an economy, including produced capital, human capital, and natural capital. The results reveal that several national demonstration zones achieve sustainable peaking in correspondence with declining emissions and increasing sustainability from 2012 to 2019, driven by industrial transformation, education improvement, and renewable resources growth. Comparatively, some northeastern cities mitigate emissions by cutting carbon-intensive industries but fail to develop new sectors to support socioeconomic development, leading to a decline in well-being. Our findings emphasize the need for cities to synergize sustainable development and carbon-peaking pathways while tailoring strategies to local contexts. © 2025 The Author(s)

关键词： China city emission peak Inclusive Wealth sustainable development

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Considerations for Computational Fluid Dynamics Studies of Cleanrooms Exceeding Classical Indoor Air Simulations: A Systematic Review

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Indoor Air 2025年第1期2025卷

作者： Stephan Puntigam Stefan Radl Peter Karlinger Centre for Research Development and Transfer Rosenheim Technical University of Applied Sciences Rosenheim Germany Institute of Process and Particle Engineering Graz University of Technology Graz Austria tugraz.at

We provide a systematic review of the literature on computational fluid dynamics (CFD) in the cleanroom sector. The objective is to provide simulation engineers with an overview of studies in the field of cleanroom simulation, as well as to identify the most commonly used simulation parameters. Our findings indicate a persistent preference for the k − ε model for turbulent flow situations, although recent studies suggest a shift toward more sophisticated models, such as the RNG k − ε and SST k − ω . This reflects advancements in the available computational power made in the past years. Our analysis of particle tracking models indicates a clear preference for the Euler–Lagrange method over the Euler–Euler method. Moreover, the analysis of inlet models used indicates that geometrically resolved diffusers are preferred over simplified models. As every simulation study requires proper validation, full-scale experiments are clearly preferred in the reviewed studies. A best practice guide is distilled out of previous studies to provide a meaningful starting point for future CFD studies in the cleanroom sector.

关键词： airflow cleanroom computational fluid dynamics (CFD) particle tracking turbulence model

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Three-dimensional MXenes heterostructures and their applications

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Science China Materials 2022年第11期65卷 2895-2910页

作者： Jizhou Jiang Fangyi Li Jing Zou Song Liu Jiamei Wang Yilun Zou Kun Xiang Han Zhang Guoyin Zhu Yizhou Zhang Xianzhu Fu Jyh-Ping Hsu School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205 Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034 Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082 College of Materials Science and Engineering Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhen 518060 Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing 210044 Department of Chemical Engineering “National”Taiwan UniversityTaipei 10617

Due to their unique surface chemistry,highly adjustable metal components,hydrophilicity,and high carrier concentrations,MXenes are applied in a variety of *** to other two-dimensional(2D)materials,building heterostructures with additional materials to form a 3D porous architecture for MXenes can significantly enhance their functionality and ***,the open structures and well-defined pathways of these 3D structured MXenes can improve ionic and electronic transport,thereby promoting their applications in electrochemical energy storage,sensing,catalysis,and *** this review,the recent efforts made on preparing 3D porous MXenes with heterostructures,focusing on MXenes/C,MXenes/inorganics,and MXenes/polymers were *** discussion covers aspects ranging from the design to synthesis of 3D porous MXenes,and their applications in photocatalysis,environmental monitoring and electrochemical energy *** review is concluded by presenting the prospects and insights on exploring the relationships between the porosity formation mechanisms,properties and applications of the 3D porous MXenes *** review can provide meaningful guidance for the design,fabrication and application of 3D porous MXenes in high-performance materials and devices.

关键词： 3D porous MXenes MXenes heterostructures photocatalysis environmental monitoring electrochemical energy storage

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A novel approach of jet polishing for interior surface of small-grooved components using three developed setups

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极端制造(英文) 2024年第2期6卷 426-446页

作者： Qinming Gu Zhenyu Zhang Hongxiu Zhou Jiaxin Yu Dong Wang Junyuan Feng Chunjing Shi Jianjun Yang Junfeng Qi State Key Laboratory of High-performance Precision Manufacturing Dalian University of TechnologyDalian 116024People's Republic of China School of Energy and Power Engineering Dalian University of TechnologyDalian 116024People's Republic of China Key Laboratory of Testing Technology for Manufacturing Process Ministry of EducationSouthwest University of Science and TechnologyMianyang 621010People's Republic of China State Key Laboratory of High-performance Precision Manufacturing Dalian University of TechnologyDalian 116024People's Republic of China Beijing Spacecraft Manufacturing Co. LtdChina Academy of Space TechnologyBeijing 100094People's Republic of China School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhouZhejiangPeople's Republic of China Facility Design and Instrumentation Institute China Aerodynamics Research and Development Center(CARDC)Mianyang 621000People's Republic of China Beijing Spacecraft Manufacturing Co. LtdChina Academy of Space TechnologyBeijing 100094People's Republic of China

It is a challenge to polish the interior surface of an additively manufactured component with complex structures and groove sizes less than 1 *** polishing methods are disabled to polish the component,meanwhile keeping the structure *** overcome this challenge,small-grooved components made of aluminum alloy with sizes less than 1 mm were fabricated by a custom-made printer.A novel approach to multi-phase jet(MPJ)polishing is proposed,utilizing a self-developed polisher that incorporates solid,liquid,and gas *** contrast,abrasive air jet(AAJ)polishing is recommended,employing a customized polisher that combines solid and gas *** jet polishing,surface roughness(Sa)on the interior surface of grooves decreases from pristine 8.596 μm to 0.701 μm and 0.336 μm via AAJ polishing and MPJ polishing,respectively,and Sa reduces 92％and 96％,***,a formula defining the relationship between linear energy density and unit defect volume has been *** optimized parameters in additive manufacturing are that linear energy density varies from 0.135 J mm-1 to 0.22 J *** unit area defect volume achieved via the optimized parameters decreases to 1/12 of that achieved via non-optimized *** fluid dynamics simulation results reveal that material is removed by shear stress,and the alumina abrasives experience multiple collisions with the defects on the heat pipe groove,resulting in uniform material *** is in good agreement with the experimental *** novel proposed setups,approach,and findings provide new insights into manufacturing complex-structured components,polishing the small-grooved structure,and keeping it unbroken.

关键词： aluminum alloy abrasive air jet polishing multi-phase jet polishing interior curved surface small-grooved component

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Study on water purification with warm and cold season aquatic plants

Study on water purification with warm and cold season aquati...

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作者： Jiajun Sun Yajie Zhang Guangyu Ma Junhong Xiao Yajing Cai Zhi Wang Hongbin Cao Beijing Engineering Research Center of Process Pollution Control Institute of Process EngineeringChinese Academy of Sciences University of Chinese Academy of Sciences China Xiong'an Group Co.Ltd College of Environmental Science and Engineering Beijing Forestry University Environmental Development Center of the Ministry of Ecology and Environment

As a national key protection and restoration project, ecological restoration of Baiyangdian Wetland has an important significance for environmental management. As the research area in Zaozhadian wetland,the purification effect of warm season and cold season aquatic plants was studied under different overflying water qualities. It provides a theoretical and experimental basis for the ecological environment restoration and management of wetlands. The results showed that the warm season and cold season aquatic plants all played important roles on the nitrogen and phosphorus removal and maintained the stable water environmental from the nutrient release from soil. The warm season plant-mixed Myriophyllum spicatum and Ceratophyllum demersum and the cold season plantPotamogeton crispus L. can be reasonably configurated for the wetland restoration.

关键词： Study on water purification with warm and cold season aquatic plants

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A conceptual framework for SPI evaluation

arXiv

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arXiv 2023年

作者： Unterkalmsteiner, Michael Gorschek, Tony Islam, A.K.M. Moinul Cheng, Chow Kian Permadi, Rahadian Bayu Feldt, Robert Software Engineering Research Lab School of Computing Blekinge Institute of Technology KarlskronaSE-371 79 Sweden Software Engineering: Process and Measurement Research Group Department of Computer Science University of Kaiserslautern PO Box 3049 Kaiserslautern67653 Germany General Electrics Healthcare Healthcare IT. Munzinger Straße 5 Freiburg79111 Germany Amadeus S.A.S. Product Marketing and Development 485 Route du Pin Montard Boite Postale 69 Sophia Antipolis06902 Cedex France

Software process Improvement (SPI) encompasses the analysis and modification of the processes within software development, aimed at improving key areas that contribute to the organizations’ goals. The task of evaluating whether the selected improvement path meets these goals is challenging. Based on the results of a systematic literature review on SPI measurement and evaluation practices, we developed a framework (SPI-MEF) that supports the planning and implementation of SPI evaluations. SPI-MEF guides the practitioner in scoping the evaluation, determining measures and performing the assessment. SPI-MEF does not assume a specific approach to process improvement and can be integrated in existing measurement programs, refocusing the assessment on evaluating the improvement initiative’s outcome. Sixteen industry and academic experts evaluated the framework’s usability and capability to support practitioners, providing additional insights that were integrated in the application guidelines of the framework. Copyright © 2013 John Wiley & Sons, Ltd. © 2023, CC BY-NC-SA.

关键词： Software design

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Unveiling the hidden intrinsic porosity of marine biomass-derived carbon: Eliminating pore-blocking minerals

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Carbon 2024年 223卷

作者： Da He Koji Saito Toru Kato Chika Kosugi Takaaki Shimohara Koji Nakabayashi Seong-Ho Yoon Jin Miyawaki Interdisciplinary Graduate School of Engineering Sciences Kyushu University Japan Nippon Steel Research Institute Corporation Japan Environment and Process Research Department The Japan Research and Development Center for Metals Japan Advanced Technology Research Laboratories Nippon Steel Corporation Japan Institute for Materials Chemistry and Engineering Kyushu University Japan

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Evaluation and Measurement of Software process Improvement - A Systematic Literature Review

arXiv

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arXiv 2023年

作者： Unterkalmsteiner, Michael Gorschek, Tony Islam, A.K.M. Moinul Cheng, Chow Kian Permadi, Rahadian Bayu Feldt, Robert Software Engineering Research Lab School of Computing Blekinge Institute of Technology KarlskronaSE-371 79 Sweden Software Engineering: Process and Measurement Research Group Department of Computer Science University of Kaiserslautern PO Box 3049 Kaiserslautern67653 Germany General Electrics Healthcare Healthcare IT Munzinger Straße 5 Freiburg79111 Germany Amadeus S. A. S. Product Marketing and Development 485 Route du Pin Montard Boite Postale 69 Sophia Antipolis 06902 Cedex France

BACKGROUND—Software process Improvement (SPI) is a systematic approach to increase the efficiency and effectiveness of a software development organization and to enhance software products. OBJECTIVE—This paper aims to identify and characterize evaluation strategies and measurements used to assess the impact of different SPI initiatives. METHOD—The systematic literature review includes 148 papers published between 1991 and 2008. The selected papers were classified according to SPI initiative, applied evaluation strategies and measurement perspectives. Potential confounding factors interfering with the evaluation of the improvement effort were assessed. RESULTS—Seven distinct evaluation strategies were identified, whereas the most common one, "Pre-Post Comparison", was applied in 49% of the inspected papers. Quality was the most measured attribute (62%), followed by Cost (41%) and Schedule (18%). Looking at measurement perspectives, "Project" represents the majority with 66%. CONCLUSION—The evaluation validity of SPI initiatives is challenged by the scarce consideration of potential confounding factors, particularly given that "Pre-Post Comparison" was identified as the most common evaluation strategy, and the inaccurate descriptions of the evaluation context. Measurements to assess the short and mid-term impact of SPI initiatives prevail, whereas long-term measurements in terms of customer satisfaction and return on investment tend to be less used. © 2023, CC BY-NC-SA.

关键词： Customer satisfaction

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Coal Forming Environment and Provenance Evolution During the Late Permian in the Western Guizhou: Evidence from the Coal Petrography and Geochemistry of Longtan Coal in Well Dh-1

SSRN

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SSRN 2024年

作者： Xiang, Wenxin Han, Sijie Sang, Shuxun Mondal, Debashish Zhou, Xiaozhi Zhao, Fuping Wu, Zhangli Zhang, Jinchao Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process Ministry of Education China University of Mining and Technology Jiangsu Xuzhou221008 China School of Resources and Geosciences China University of Mining and Technology Jiangsu Xuzhou221116 China Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization China University of Mining and Technology Xuzhou221008 China Carbon Neutrality Institute China University of Mining and Technology Xuzhou221008 China Guizhou Engineering Research Institute of Oil & Gas Exploration and Development Guiyang550081 China Key Laboratory of Unconventional Natural Gas Evaluation and Development in Complex Tectonic Areas Ministry of Natural Resources Guiyang550081 China

The geochemical signatures of trace elements in coal are critical indicators of the material sources and depositional environments during the coal-forming period. This study investigates 13 coal seams from the Longtan Formation within the Dahebian syncline, Guizhou, China. It encompasses industrial analysis, sulfur measurement, elemental profiling, coal ash composition analysis, maceral identification, and trace element quantification. The research investigates the coal samples' petrological, mineralogical, sedimentological, and geochemical characteristics to assess the vertical evolution of the coal-forming environment and provenance variations within the Longtan Formation, explores the relationship between changes in the depositional environment and material sources, and constructs a sedimentary infilling model for the Late Permian in western Guizhou. The key findings of the research are as follows: (1)The upper coal samples are characterized by high sulfur content and abundant pyrite, with silicon enrichment, aluminum depletion, and high rare earth element enrichment coefficients. The bottom coal samples show significant enrichment in the high-field-strength elements Zr, Nb, Hf, and Ta.(2)The detrital materials in the coal samples are likely derived from three sources: high-Ti/low-Ti basalts from the Emeishan region, felsic rocks from the summit of Emeishan, and volcanic ash from the Permian-Triassic Boundary (PTB). (3)The overall depositional environment of the Longtan Formation is predominantly humid and reductive, and the coal-forming plants are mainly aquatic and herbaceous. However, the upper segment exhibits a more stable depositional environment than the lower segment, with a trend towards arid and oxidative conditions in the later depositional stages. (4)The instability in the depositional environment of the lower segment of the Longtan Formation may be linked to magmatic dike eruptions and volcanic ash fallout from the Emeishan region. The trend towards

关键词： Coal

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Bottom-hole stress analysis of ultra-deep wells based on theory of poroelastic mechanics

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Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) 2020年第5期44卷 52-61页

作者： Hu, Huaigang Guan, Zhichuan Xu, Yuqiang Han, Chao Liu, Yongwang Liang, Deyang Lu, Baoping Qingdao266580 China Shandong Ultra-deep Drilling Process Control Technology Research and Development Center Qingdao266580 China SINOPEC Research Institute of Petroleum Engineering Beijing100101 China

Based on Biot's theory of poroelastic mechanics and the consideration of complex stress conditions of bottom hole rocks, a fully coupled model between seepage field and stress field was established, the dynamic change law of pore pressure and stress distribution at the well bottom was obtained by numerical calculation, and the results were verified by Warren's model. The predictive model of the rock strength failure at the bottom-hole combining with the three-dimensional Mohr-Coulomb criteria was developed. The influence of stress distribution on rock damage was discussed. By calculating the failure function, the strength condition of the rock at the bottom-hole under different working conditions and different times was analyzed. The results show that the dynamic response of the rock at the bottom-hole can be evaluated in real-time by using the established fluid-solid coupling model. Generally, the three-dimensional stress reaches the maximum value (compressive stress)instantly as the wellbore excavated, while the stress reaches the minimum value (partially tensile stress)after tens of seconds, and the rock stress at the bottom-hole will stabilize after a few hours. Under an over-balanced drilling condition, there is a risk of strength failure at a small distance inside the rock, rather than at the bottom-hole wall only when the borehole is excavated instantaneously. When the pressure difference is greater than 1.75 MPa under the condition of underbalanced drilling, the rock at the bottom-hole has a tendency of strength destruction during the whole period, and the strength failure area will expand with the pressure difference increasing. © 2020, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.

关键词： Rocks

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