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城市轨道交通综合体园林景观设计探究——以芜湖跨座式单轨交通为例

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铁道勘察 2022年第5期48卷 132-136页

作者：刘瀚舒季澄之中铁工程设计咨询集团有限公司北京100055

随着我国轨道交通建设的高速发展,桥下附属空间在城市公共空间中占据的比例越发突出。面对国内桥下空间存在的脏乱差问题,提出一种将桥下“灰空间”向积极空间转化的景观设计理念。以景观设计学理论为基础,运用文献法、田野调查法、系... 详细信息

随着我国轨道交通建设的高速发展,桥下附属空间在城市公共空间中占据的比例越发突出。面对国内桥下空间存在的脏乱差问题,提出一种将桥下“灰空间”向积极空间转化的景观设计理念。以景观设计学理论为基础,运用文献法、田野调查法、系统分析法以及归纳演绎法,对芜湖轨道交通北京路站及控制中心综合的设计条件及轨道交通桥下空间特征进行分析,明晰了轨道交通桥下景观交通条件制约、空间形态制约、生态污染等几个设计重难点。通过对高架轨道交通视觉景观形象、环境生态绿化以及大众行为心理等设计要素的研究,明确了景观设计策略:(1)安全实用,循环经济;(2)生态优先,以人为本;(3)因地制宜,皖南特色。研究结果表明,通过北京路站及控制中心综合体桥下景观的设计探讨,提出相关原则与策略,并将对策研究实际化,可为今后跨座式单轨景观化设计提供依据。

关键词：城市轨道交通轨道交通综合体桥下附属空间景观设计设计策略

A hybrid fuel cell for water purification and simultaneously electricity generation

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Frontiers of Environmental Science & Engineering 2023年第1期17卷 121-132页

作者： Yujun Zhou Qinghua ji chengzhi Hu Huijuan Liu jiuhui Qu Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

The development of highly efficient energy conversion technologies to extract energy from wastewater is urgently needed,especially in facing of increasing energy and environment ***,we successfully fabricated a novel hybrid fuel cell with BiOCl-NH_(4)PTA as *** polyoxometalate(NH_(4)PTA)act as the acceptor of photoelectrons and could retard the recombination of photogenerated electrons and holes,which lead to superior photocatalytic *** utilizing BiOCl-NH_(4)PTA as photocatalysts and Pt/C air-cathode,we successfully constructed an electron and mass transfer enhanced photocatalytic hybrid fuel cell with flow-through field(F-HFC).In this novel fuel cell,dyes and biomass could be directly degraded and stable power output could be *** 87%of dyes could be degraded in 30 min irradiation and nearly 100%removed within 90 *** current density could reach up to~267.1μA/cm^(2);with maximum power density(Pmax)of~16.2μW/cm^(2) with Rhodamine B as organic pollutant in *** power densities were 9.0μW/cm^(2),12.2μW/cm^(2),and 13.9μW/cm^(2) when using methyl orange(MO),glucose and starch as substrates,*** hybrid fuel cell with BiOCl-NH_(4)PTA composite fulfills the purpose of decontamination of aqueous organic pollutants and synchronous electricity ***,the novel design cell with separated photodegradation unit and the electricity generation unit could bring potential practical application in water purification and energy recovery from wastewater.

关键词： Flow-through field Hybrid fuel cell Polyoxometalates Water purification Electricity generation

Pumping and sliding of droplets steered by a hydrogel pattern for atmospheric water harvesting

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National Science Review 2023年第12期10卷 181-192页

作者： Wei Zhang Qinghua ji Gong Zhang Zhenao Gu Haozhi Wang chengzhi Hu Huijuan Liu Zhiyong Jason Ren jiuhui Qu Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of Environment Tsinghua University Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin University Department of Civil and Environmental Engineering and Andlinger Center for Energy and the Environment Princeton University

Atmospheric water harvesting is an emerging strategy for decentralized and potable water supplies. However,water nucleation and microdroplet coalescence on condensing surfaces often result in surface flooding owing to the lack of a sufficient directional driving force for shedding. Herein, inspired by the fascinating properties of lizards and catfish, we present a condensing surface with engineered hydrogel patterns that enable rapid and sustainable water harvesting through the directional pumping and drag-reduced sliding of water droplets. The movement of microscale condensed droplets is synergistically driven by the surface energy gradient and difference in Laplace pressure induced by the arch hydrogel patterns. Meanwhile, the superhydrophilic hydrogel surface can strongly bond inner-layer water molecules to form a lubricant film that reduces drag and facilitates the sliding of droplets off the condensing surface. Thus, this strategy is promising for various water purification techniques based on liquid–vapor phase-change processes.

关键词： atmospheric water harvesting droplet manipulation bio-inspired condensation

MAX-DOAS and in-situ measurements of aerosols and trace gases over Dongying,China:Insight into ozone formation sensitivity based on secondary HCHO

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Journal of Environmental Sciences 2024年第1期135卷 656-668页

作者： Xiaojun Zheng Zeeshan Javed Cheng Liu Aimon Tanvir Osama Sandhu Haoran Liu Xiangguang ji chengzhi Xing Hua Lin Daolin Du Institute of Environment and Ecology School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of ChinaHefei 230026China Key Laboratory of Environmental Optics&Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230026China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China National Agromet Center Pakistan Meteorological DepartmentIslamabad 44000Pakistan Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui UniversityHefei 230601China School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China

This study presents a comprehensive overview of the atmospheric pollutants including Sulfur dioxide(SO_(2)),Nitrogen dioxide(NO_(2)),Formaldehyde(HCHO),Particulate Matter PM;PM_(10):diameter≤10μm,and PM_(2.5):diameter≤2.5μm,and Ozone(O_(3)),over Dongying(Shandong Province)from March-April 2018 and September-October 2019 by employing ground-based Multiple Axis Differential Optical Absorption Spectroscopy(MAX-DOAS)observations along with the in-situ measurements attained by the national air quality monitoring *** concentrations of SO_(2)and NO_(2)were under the acceptable level,while both PM_(2.5),and PM_(10)were higher than the safe levels as prescribed by national and international air quality *** results depict that 21%of the total observation days were found to be complex polluted days(PM_(2.5)>35μg/m^(3) and O_(3)>160μg/m^(3)).The secondary HCHO was used for accurate analysis of O_(3)sensitivity.A difference of 11.40%and 10%during March-April 2018 and September-October 2019 respectively in O_(3)sensitivity was found between HCHO_(total)/NO_(2)and HCHO_(sec)/NO_(2).The results indicate that primary HCHO have significant contribution in HCHO.O_(3)formation predominantly remained to be in VOC-limited and transitional regime during March-April 2018 and September-October 2019 in *** results imply that concurrent control of both NO_(x) and VOCs would benefit in ozone ***,the criteria pollutants(PM,SO_(2),and NO_(2))depicted strong correlations with each other except for O_(3)for which weak correlation coefficient was obtained with all the *** study will prove to be baseline for designing of air pollution control strategies.

关键词： MAX-DOAS Trace gases Ozone sensitivity Secondary HCHO Complex Pollution

Comparison of mixing layer height inversion algorithms using lidar and a pollution case study in Baoding, China

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Journal of Environmental Sciences 2019年第5期31卷 81-90页

作者： Xiangguang ji Cheng Liu Zhouqing Xie Qihou Hu Yunsheng Dong Guangqiang Fan Tianshu Zhang chengzhi Xing Zhuang Wang Zeeshan Javed jianguo Liu School of Environmental Science and Optoelectronic Technology University of Science and Technology of China Key Lab of Environmental Optics and Technology Anhui Institute of Optics and Fine Mechanics Hefei Institutes of Physical Science Chinese Academy of Sciences School of Earth and Space Sciences University of Science and Technology of China Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Anhui Province Key Laboratory of Polar Environment and Global Change University of Science and Technology of China

Beijing–Tianjin–Hebei area is suffering from atmospheric pollution from a long time. The understanding of the air pollution mechanism is of great importance for officials to design strategies for the environmental governance. Mixing layer height(MLH) is a key factor influencing the diffusion of air pollutants. It plays an important role on the evolution of heavy pollution events. Light detection and ranging(lidar), is an effective remote-sensing tool, which can retrieve high spatial and temporal evolution process within mixing layer(ML), especially the variation of MLH. There are many methods to retrieve MLH, but each method has its own applicable limitations. The Mie-lidar data in Beijing was firstly used to compare three different algorithms which are widely used under different pollution *** find that the multi-layer structure near surface may cause errors in the detection of mixing layer. The MLH retrieved based on image edge detection was better than another two methods especially under heavy polluted episode. Then we applied this method to investigate the evolution of the mixing layer height during a pollution episode in December2016. MLH at Gucheng county showed the positive correlation with the concentration of particulate matters during the start of this pollution episode. The elevated pollution level in Gucheng was not associated with MLH's decrease, and the significantly increased particulate matters raised the boundary layer, which trapped the pollutants near the surface.

关键词： Mixing layer Beijing–Tianjin–Hebei area Severe haze

Vertical distributions of wintertime atmospheric nitrogenous compounds and the corresponding OH radicals production in Leshan, southwest China

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Journal of Environmental Sciences 2021年第7期33卷 44-55页

作者： chengzhi Xing Cheng Liu Qihou Hu Qingyan Fu Shanshan Wang Hua Lin Yizhi Zhu Shuntian Wang Weiwei Wang Zeeshan Javed Xiangguang ji jianguo Liu Key Lab of Environmental Optics&Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of ChinaHefei 230026China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230026China Anhui Province Key Laboratory of Polar Environment and Global Change USTCHefei 230026China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Eco-Chongming(SIEC) No.3663 Northern Zhongshan RoadShanghai 200062China School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China Shanghai Environmental Monitoring Center Shanghai 200235China School of Environmental Science and Engineering Nanjing University of Information Science and TechnologyNanjing 210044China

Ground-based multi-axis differential optical absorption spectroscopy(MAX-DOAS)observations were operated from 02 to 21 December 2018 in Leshan,southwest China,to measure HONO,NO_(2) and aerosol extinction vertical distributions,and these were the first MAX-DOAS measurement results in Sichuan *** the measurement period,characteristic ranges for surface concentration were found to be 0.26-4.58 km^(−1) and averaged at 0.93 km^(−1) for aerosol extinction,0.49 to 35.2 ppb and averaged at 4.57 ppb for NO_(2) and 0.03 to 7.38 ppb and averaged at 1.05 ppb for ***,vertical profiles of aerosol,NO_(2) and HONO were retrieved from MAX-DOAS measurements using the Heidelberg Profile(HEIPRO)*** analysing the vertical gradients of pollutants and meteorological information,we found that aerosol and HONO are strongly localised,while NO_(2) is mainly transmitted from the north direction(city center direction).Nitrogen oxides such as HONO and NO_(2) are important for the production of hydroxyl radical(OH)and oxidative capacity in the *** this study,the averaged value of OH production rate from HONO is about 0.63 ppb/hr and maximum value of ratio between OH production from HONO and from(HONO+O_(3))is>93%before12:00 in *** addition,combustion emission contributes to 26%for the source of HONO in Leshan,and we found that more NO_(2) being converted to HONO under the conditions with high aerosol extinction coefficient and high relative humidity is also a dominant factor for the secondary produce of HONO.

关键词： MAX-DOAS Verticle distribution HONO Hydroxyl radical Secondary source

Breaking or following the membrane-targeting mechanism:Exploring the antibacterial mechanism of host defense peptide mimicking poly(2-oxazoline)s

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Journal of Materials Science & Technology 2020年第24期59卷 220-226页

作者： chengzhi Dai Min Zhou Weinan jiang Ximian Xiao jingcheng Zou Yuxin Qian Zihao Cong Zhemin ji Longqiang Liu jiayang Xie Zhongqian Qiao Runhui Liu State Key Laboratory of Bioreactor Engineering Frontiers Science Center for Materiobiology and Dynamic ChemistryKey Laboratory of Specially Functional Polymeric Materials and Related Technology(ECUST)Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China State Key Laboratory of Molecular Engineering of Polymers(Fudan University) Shanghai200438China

Peptides exert important biological functions but their application is hindered by their susceptibility to proteolysis and poor stability in ***,functional peptide mimics have drawn a great deal of attention to address this ***(2-oxazoline)s,a class of biocompatible and proteolysis-resistant polymer,can work as host defense peptide mimics without following the general membrane-targeting mechanism as shown in our previous *** observation encouraged us to figure out if poly(2-oxazoline)s are special and break the general membrane-targeting mechanism of host defense peptides and their *** this study,we aimed at the connection between structure and antibacterial mechanism of poly(2-oxazoline)s.A new γ-aminobutyric acid(GABA)-pendent poly(2-oxazoline)was synthesized and investigated to compare with glycine-pendent poly(2-oxazoline)in our previous study,with the former polymer has two extra CH2 groups in the sidechain to increase the hydrophobicity and *** depolarization assay suggested that incorporating two more CH2 groups into the sidechain of poly(2-oxazoline)resulted in a mechanism switch from DNA-targeting to membrane-targeting,which was supported by the slow time-kill kinetics and slightly distorted and sunken membrane ***,GABA-pendent poly(2-oxazoline)showed potent activity against methicillin-resistant *** and low hemolysis on human red blood ***,repeated use of the antimicrobial poly(2-oxazoline)did not stimulate bacteria to obtain resistance,which was an obvious advantage of membrane-targeting antimicrobial agents.

关键词： Poly(2-oxazoline) Host defense peptide Antibacterial mechanism Membrane-targeting Antimicrobial resistance

Research progress in the estimation of the postmortem interval by Chinese forensic scholars

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Forensic Sciences Research 2016年第1期1卷 3-13页

作者： chengzhi Li Qi Wang Yinming Zhang Hancheng Lin ji Zhang Ping Huang Zhenyuan Wang School of Forensic Science and Medicine Xi’an Jiaotong UniversityXi’anChina Shanghai Key Laboratory of Forensic Science Shanghai Forensic Service PlatformInstitute of Forensic ScienceMinistry of JusticePRCShanghaiChina

The determination of time since death or the postmortem interval(PMI)is one of the most important and frequently asked questions in forensic *** scholars and forensic pathologists around the world have studied the estimation of PMI extensively in the past,and many novel methods and advanced technologies have now been applied in the *** several centuries,Chinese forensic examiners have also worked on the estimation of the PMI,and there are a large number of excellent studies published in Chinese rather than in English,and these are not easily accessible or known *** we have conducted a review of relevant studies published by Chinese forensic scholars in the last few *** scope of this review is to provide a concise summary of the current progress in the estimation of PMI by Chinese forensic researchers using molecular biology,spectroscopic technology,entomological methods,energy changes,thanatochemistry and other methods.

关键词： Forensic science forensic pathology postmortem interval methods Chinese

Ground-Based Hyperspectral Stereoscopic Remote Sensing Network: A Promising Strategy to Learn Coordinated Control of O_(3) and PM_(2.5) over China

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Engineering 2022年第12期19卷 71-83页

作者： Cheng Liu chengzhi Xing Qihou Hu Qihua Li Haoran Liu Qianqian Hong Wei Tan Xiangguang ji Hua Lin Chuan Lu jinan Lin Hanyang Liu Shaocong Wei jian Chen Kunpeng Yang Shuntian Wang Ting Liu Yujia Chen Department of Precision Machinery and Precision Instrumentation University of Science and Technology of ChinaHefei 230026China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Lab of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230026China Anhui Province Key Laboratory of Polar Environment and Global Change University of Science and Technology of ChinaHefei 230026China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China School of Environment and Civil Engineering Jiangnan UniversityWuxi 214122China

With the coming of the“14th Five-Year Plan,”the coordinated control of particulate matter with an aerodynamic diameter no greater than 2.5 lm(PM_(2.5))and O_(3) has become a major issue of air pollution prevention and control in *** stereoscopic monitoring of regional PM_(2.5) and O_(3) and their precursors is crucial to achieve coordinated ***,current monitoring networks are currently inadequate for monitoring the vertical profiles of both PM_(2.5) and O_(3) simultaneously and support air quality *** University of Science and Technology of China(USTC)has established a nationwide ground-based hyperspectral stereoscopic remote sensing network based on multi-axis differential optical absorption spectroscopy(MAX-DOAS)since *** monitoring network provides a significant opportunity for the regional coordinated control of PM_(2.5) and O_(3) in ***-year vertical profiles of aerosol,NO_(2) and HCHO monitored from four MAX-DOAS stations installed in four megacities(Beijing,Shanghai,Shenzhen,and Chongqing)were used to characterize their vertical distribution differences in four key regions,jing–jin–ji(JJJ),Yangtze River Delta(YRD),Pearl River Delta(PRD),and Sichuan Basin(SB),*** normalized and yearly averaged aerosol vertical profiles below 400 m in JJJ and PRD exhibit a box shape and a Gaussian shape,respectively,and both show exponential shapes in YRD and *** NO_(2) vertical profiles in four regions all exhibit exponential shapes because of vehicle *** shape of the HCHO vertical profile in JJJ and PRD was Gaussian,whereas an exponential shape was shown in YRD and ***,a regional transport event occurred at an altitude of 600–1000 m was monitored in the southwest–northeast pathway of the North China Plain(NCP)by five MAX-DOAS stations(Shijiazhuang(SJZ),Wangdu(WD),Nancheng(NC),Chinese Academy of Meteorological Sciences(CAMS),and University of Chinese Academy of Sciences(UCAS))belonging to the above network

关键词： MAX-DOAS Stereoscopic monitoring Regional transport Ozone production Control strategy