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平原感潮河网水质模型研究

水动力学研究与进展（A辑） 2003年第2期18卷 182-188页

作者：徐祖信卢士强同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室上海200092

针对平原感潮河网水质状况的特点 ,利用一维对流扩散方程、水质过程方程建立了河网水质模型 ;利用GIS对1999年全市点源和面源污染负荷进行合理的分配和计算 ;进行主要水质参数的灵敏度分析 ;利用 1999年 6月～ 9月的实测水质资料进行了... 详细信息

针对平原感潮河网水质状况的特点 ,利用一维对流扩散方程、水质过程方程建立了河网水质模型 ;利用GIS对1999年全市点源和面源污染负荷进行合理的分配和计算 ;进行主要水质参数的灵敏度分析 ;利用 1999年 6月～ 9月的实测水质资料进行了率定。

关键词：感潮河网水质模型对流扩散污染负荷模型率定

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平原感潮河网水动力模型研究

水动力学研究与进展（A辑） 2003年第2期18卷 176-181页

作者：徐祖信卢士强同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室上海200092

利用一维Saint Venant方程组、河网汊点连续方程及边界条件建立了河网水动力学模型 ;采用Abbott六点隐式差分格式离散控制方程组 ;求解河网时 ,将河段方程自相消元 ,得到以汊点水位为基本未知量的汊点方程组 ;采用汊点优化编码来降低汊... 详细信息

利用一维Saint Venant方程组、河网汊点连续方程及边界条件建立了河网水动力学模型 ;采用Abbott六点隐式差分格式离散控制方程组 ;求解河网时 ,将河段方程自相消元 ,得到以汊点水位为基本未知量的汊点方程组 ;采用汊点优化编码来降低汊点方程组系数矩阵的带宽以提高计算精度和节省计算耗时。对上海市平原感潮河网进行了合理概化 ,利用1999年 6月～ 9月的实测水文资料进行了率定。

关键词：感潮河网水动力模型汉点方程组模型率定离散格式

Spatiotemporal variations in glacier area and surface velocity of the northern Antarctic Peninsula during 2018-2022

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Advances in Climate Change Research 2024年第2期15卷 297-311页

作者： Yu-Long KANG shi-Chang KANG Wan-Qin GUO Tao CHE Zong-Li JIANG Zhen-Feng WANG qiang-qiang xu Cheng-De YANG state key laboratory of Cryospheric science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China university of Chinese Academy of sciences Beijing 100083China key laboratory of Remote Sensing of Gansu Province Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China school of Earth sciences and Spatial Information engineering Hunan University of Science and TechnologyXiangtan 411201China

Ice sheet serves as a crucial indicator for assessing climate *** loss in recent remote sensing-based studies indicated that the Antarctic Peninsula has rapid rates of glacier retreat and speed up of surface ***,observations of seasonal variability of ice speed are limited,and glacier-area changes require multi-temporal *** study investigated the changes in area and surface velocities of∼375 glaciers on the northern Antarctic Peninsula(NAP)utilizing satellite images acquired by the Sentinel 1&2 satellites during *** results indicate that the glacier area reduced by approximately 166.1±44.2 km^(2)(-0.2%±0.1%per year)during the study period,with an acceleration after 2020(-0.4%±0.3%per year),and the most dramatic reduction happened on the eastern *** maximum annual ice speeds on the NAP generally exceeded 3500 m per year,while the ice speeds in 2021 were the highest(exceeded 4210 m per year).The ice speed variability in austral autumn was higher than in other seasons,meanwhile the summer ice speeds showed an increasing *** glacier G012158E47018N,McNeile Glacier,glacier G299637E64094S and Drygalski Glacier showed the most remarkable ice speed variations represented by high daily velocities and strong fluctuations on their *** results demonstrated that the variations in glacier area and seasonal ice speed on the NAP were responsive to the ice-ocean-atmosphere ***,seasonal velocity and area variations should be considered when conducting accurate mass balance calculations,model validations and change mechanism analyses under climate warming scenarios.

关键词： Glacier area Seasonal ice speed Sentinel 1&2 Northern Antarctic Peninsula Ice-ocean-atmosphere processes

The 2022 report of synergetic roadmap on carbon neutrality and clean air for china:Accelerating transition in key sectors

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environmental science and Ecotechnology 2024年第3期19卷 4-18页

作者： Yu Lei Zhicong Yin Xi lu qiang Zhang Jicheng Gong Bofeng Cai Cilan Cai Qimin Chai Huopo Chen Renjie Chen shi Chen Wenhui Chen Jing Cheng Xiyuan Chi Hancheng Dai Xiangzhao Feng Guannan Geng Jianlin Hu Shan Hu Cunrui Huang Tiantian Li Wei Li Xiaomei Li Jun Liu xin Liu Zhu Liu Jinghui Ma Yue Qin Dan Tong xuhui Wang xuying Wang Rui Wu Qingyang Xiao Yang Xie Xiaolong xu Tao xue Haipeng Yu Da Zhang Ning Zhang Shaohui Zhang Shaojun Zhang Xian Zhang xin Zhang Zengkai Zhang Bo Zheng Yixuan Zheng Jian Zhou Tong Zhu Jinnan Wang Kebin He Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100041China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100041China key laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China state key Joint laboratory of environment Simulation and pollution control School of EnvironmentTsinghua UniversityBeijing100084China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China Ministry of Education key laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China state key Joint laboratory for environment Simulation and pollution control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China school of Public Health Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of HealthFudan UniversityShanghai200032China school of Economics and Management Beijing University of Chemical TechnologyBeijing100029China Department of Earth System science University of CaliforniaIrvineCA92697USA National Meteorological Center China Meteorological AdministrationBeijing100081China College of environmental sciences and engineering Peking UniversityBeijing100871China Policy Research Center for environment and Economy Ministry of Ecology and Environment of the People's Republic of ChinaBeijing100029China Jiangsu key laboratory of Atmospheric environment Monitoring

china is now confronting the intertwined challenges of air pollution and climate *** the high synergies between air pollution abatement and climate change mitigation,the Chinese government is actively promoting synergetic control of these two *** Synergetic Roadmap project was launched in 2021 to track and analyze the progress of synergetic control in china by developing and monitoring key *** Synergetic Roadmap 2022 report is the first annual update,featuring 20 indicators across five aspects:synergetic governance system and practices,progress in structural transition,air pollution and associated weather-climate interactions,sources,sinks,and mitigation pathway of atmospheric composition,and health impacts and benefits of coordinated *** to the comprehensive review presented in the 2021 report,the Synergetic Roadmap 2022 report places particular emphasis on progress in 2021 with highlights on actions in key sectors and the relevant *** milestones include the proportion of non-fossil power generation capacity surpassing coal-fired capacity for the first time,a decline in the production of crude steel and cement after years of growth,and the surging penetration of electric ***,in 2022,china issued the first national policy that synergizes abatements of pollution and carbon emissions,marking a new era for china's pollution-carbon *** changes highlight china's efforts to reshape its energy,economic,and transportation structures to meet the demand for synergetic control and sustainable ***,the country has witnessed a slowdown in carbon emission growth,improved air quality,and increased health benefits in recent years.

关键词： Synergetic roadmap Carbon neutrality Clean air

Dendrite-accelerated thermal runaway mechanisms of lithium metal pouch batteries

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SusMat 2022年第4期2卷 435-444页

作者： Xiang-Qun xu xin-Bing Cheng Feng-Ni Jiang shi-Jie Yang Dongsheng Ren Peng shi HungJen Hsu Hong Yuan Jia-Qi Huang Minggao Ouyang qiang Zhang Beijing key laboratory of Green Chemical Reaction engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina school of Metallurgy and environment Central South UniversityChangshaChina key laboratory of Energy Thermal Conversion and control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjingChina Advanced Research Institute of Multidisciplinary science Beijing Institute of TechnologyBeijingChina state key laboratory of Automotive Safety and Energy Tsinghua UniversityBeijingChina Mercedes-Benz AG MercedesstraßeStuttgartGermany

High-energy-density lithium metal batteries(LMBs)are widely accepted as promising next-generation energy storage ***,the safety features of practical LMBs are rarely explored ***,the thermal runaway behaviors of a 3.26 Ah(343 Wh kg^(−1))Li|LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)pouch cell in the whole life cycle are quantitatively investigated by extended volume-accelerating rate calorimetry and differential scanning *** thermal failure analyses on pristine cell with fresh Li metal,activated cell with once plated dendrites,and 20-cycled cell with large quantities of dendrites and dead Li,dendrite-accelerated thermal runaway mechanisms including reaction sequence and heat release contribution are *** dendrite growth and reducing the reactivity between Li metal anode and electrolyte at high temperature are effective strategies to enhance the safety performance of *** findings can largely enhance the understanding on the thermal runaway behaviors of Li metal pouch cells in practical working conditions.

关键词： battery safety lithium metal dendrites lithium metal pouch cells solid electrolyte interphase thermal runaway whole life cycle

Evolution of the global polyethylene waste trade system

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Ecosystem Health and Sustainability 2020年第1期6卷 265-280,264页

作者： Wen xu Wei-qiang Chen Daqian Jiang Chao Zhang Zijie Ma Yan Ren Lei shi key Lab of Urban environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamenFujianChina Xiamen key Lab of Urban Metabolism XiamenFujianChina Middlebury College MiddleburyVTUSA university of Chinese Academy of sciences BeijingChina eenvironmental engineering Department Montana TechButteMTUSA school of Economics and Management Tongji UniversityShanghaiChina state key Joint laboratory of environment Simulation and pollution control School of EnvironmentTsinghua UniversityBeijingChina

Introduction:china’s import bans on solid wastes starting from 2017 have challenged the global trade system of plastic wastes,which remains poorly *** study chooses polyethylene(PE)as a case and aims to map out the global trade networks of PE waste(GPETN)from 1976 to ***:We find that the size and complexity of the GPETN had been growing until *** the mid-1990s,PE waste basically flowed from developed economies,mainly the EU and the US,to developing economies such as *** 2001 when admitted into the WTO,china’s PE waste import surged until 2014 when it absorbed over 60%of global *** on solid waste import following the Green Fence campaign in 2013 resulted in substantial reductions in china’s import as well as the global export of PE waste after *** other developing economies,such as Malaysia,Turkey,and Vietnam,had transitioned to net importers,but their imports were insufficient to replace china as new recycling bases for PE ***:The results highlight the urgent need of a joint effort for developed and developing countries to build a stronger global circular economy system with sufficient capacity to treat PE waste locally.

关键词： Plastic waste polyethylene solid waste trade complex network waste management plastic recycling

Analysis of displacement damage effects on the charge-coupled device induced by neutrons at Back-n in the china Spallation Neutron Source

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Chinese Physics B 2023年第7期32卷 435-442页

作者：薛院院王祖军陈伟郭晓强姚志斌何宝平聂栩赖善坤黄港盛江坤马武英缑石龙 state key laboratory of Artificial Microstructure and Mesoscopic Physics school of Physics Peking UniversityBeijing 100871China state key laboratory of Intense Pulsed Irradiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi’an 710024China school of Materials science and engineering Xiangtan UniversityXiangtan 411105China

Displacement damage effects on the charge-coupled device(CCD)induced by neutrons at the back-streaming white neutron source(Back-n)in the china Spallation Neutron Source(CSNS)are analyzed according to an online irradiation *** hot pixels,random telegraph signal(RTS),mean dark signal,dark current and dark signal non-uniformity(DSNU)induced by Back-n are *** dark current is calculated according to the mean dark signal at various integration *** single-particle displacement damage and transient response are also observed based on the online measurement *** trends of hot pixels,mean dark signal,DSNU and RTS degradation are related to the integration time and irradiation *** mean dark signal,dark current and DSNU2 are nearly linear with neutron irradiation fluence when nearly all the pixels do not reach *** addition,the mechanisms of the displacement damage effects on the CCD are demonstrated by combining the experimental results and technology computer-aided design(TCAD)***-induced traps in the space charge region of the CCD will act as generation/recombination centers of electron-hole pairs,leading to an increase in the dark signal.

关键词： displacement damage effects charge-coupled device(CCD) china Spallation Neutron Source(CSNS) mechanisms technology computer-aided design(TCAD)

Electron-ion collider in china

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Frontiers of physics 2021年第6期16卷 1-78页

作者： Daniele PAnderle Valerio Bertone xu Cao Lei Chang Ningbo Chang Gu Chen xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li xueqian Li Yutie Liang zuotang Liang Chen Liu Chuan Liu Guoming Liu Jie Liu Liuming Liu Xiang Liu Tianbo Liu Xiaofeng luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao shi Qintao Song Hao Sun PawełSznajder Enke Wang Fan Wang Qian Wang Rong Wang Ruiru Wang Taofeng Wang Wei Wang Xiaoyu Wang Xiaoyun Wang Jiajun Wu xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi xing Hushan xu Nu xu Shusheng xu Mengshi Yan Wenbiao Yan Wencheng Yan xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou Guangdong Provincial key laboratory of Nuclear science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China IRFU CEAUniversitéParis-SaclayF-91191 Gif-sur-YvetteFrance Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China university of Chinese Academy of sciences Beijing 100049China Nankai university Tianjin 300071China xinyang Normal university Xinyang 464000China school of Physics and Materials science Guangzhou UniversityGuangzhou 510006China Hunan university Changsha 410082China Nanjing university Nanjing 210093China Huazhong university of science and Technology Wuhan 430074China European Centre for Theoretical Studies in Nuclear Physics and Related Areas(ECT*)and Fondazione Bruno Kessler Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy school of Physics Peking UniversityBeijing 100871China Hunan Normal university Changsha 410081China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Nanjing Normal university Nanjing 210023China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Southwest Jiaotong university Chengdu 610000China Department of Physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia Bogoliubov laboratory of Theoretical Physics Joint Institute for Nuclear ResearchDubna 141980Russia school of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Lanzhou university Lanzhou 730000China key laboratory of Particle Physics and Particle Irradiation(MOE) Shandong UniversityQingdao 266237China key laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China school of Physics Southeast UniversityNanjing 211189China key laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Depa

Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as *** a future high energy nuclear physics project,an Electron-ion collider in china(EicC)has been *** will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron *** proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 15 to 20 GeV and the luminosity of(2–3)×1033 cm^(−2)·s^(−1).Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the *** main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark *** addition,issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the *** order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge *** document is the result of collective contributions and valuable inputs from experts across the *** EicC physics program complements the ongoing scientific programs at the Jefferson laboratory and the future EIC project in the United *** success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in china.

关键词： electron ion collider nucleon structure nucleon mass exotic hadronic states quantum chromodynamics 3D-tomography helicity transverse momentum dependent parton distribution generalized parton distribution energy recovery linac polarization spin rotator

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北京市城镇污水再生利用现状与潜力分析

环境工程 2021年第9期39卷 1-6,47页

作者：徐傲巫寅虎陈卓崔琦白宇李魁晓时玉龙高强胡洪营清华苏州环境创新研究院江苏苏州215163 清华大学环境学院环境模拟与污染控制国家重点联合实验室国家环境保护环境微生物利用与安全控制重点实验室北京100084 中建水务环保有限公司北京100044 北京城市排水集团有限责任公司北京100061 中国环境科学学会北京100082 清华-伯克利深圳学院环境与新能源技术工程实验室广东深圳518055

北京市水资源严重匮乏,污水再生利用是支撑城市可持续发展和生态文明建设的重要途径和必然选择。近年来,北京市总用水量逐年递增,其中生态用水量增幅最大,截至2018年已达到13.4亿m^(3),占全市用水总量的34.1%。同年,北京市城镇污水处理... 详细信息

北京市水资源严重匮乏,污水再生利用是支撑城市可持续发展和生态文明建设的重要途径和必然选择。近年来,北京市总用水量逐年递增,其中生态用水量增幅最大,截至2018年已达到13.4亿m^(3),占全市用水总量的34.1%。同年,北京市城镇污水处理能力达到19.1亿m^(3),污水处理率达到93.4%,污水处理量达到16.7亿m^(3),90%以上处理出水的COD、氨氮、总磷指标均已达到GB/T 18921—2019《城市污水再生利用景观环境用水水质》(湖、库)。目前,北京市的污水再生利用率约为56.3%。如将以色列82%的污水再生利用率作为发展目标,未来仍然有4.9亿m^(3)的增长空间(以2018年北京市污水处理量为计算依据),相当于2018年南水北调供水量的53%、全市生态用水量的37%。北京市农业、工业、生活和生态用水均存在再生水利用潜力。但污水再生水利用不同于常规水资源利用,目前利用体系仍有需要完善的部分,需要政策、科研、宣传教育等多方面提供支持。污水再生利用是解决北京市水资源短缺问题的重要途径,未来发展潜力巨大。

关键词：污水再生利用用水需求污水资源污水处理