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Cover Feature: Single-Step Synthesis of Fe−Fe3O4Catalyst for Highly Efficient and Selective Electrochemical Nitrogen Reduction (ChemSusChem 21/2022)

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ChemSusChem 2022年第21期15卷

作者： Hui-Qi Xie Dr. Xuan Zheng Qing-Yun Feng Dr. Xiao-Ping Chen Dr. Ze-Hua Zou Prof. Qing-Xiang Wang Prof. Jing Tang Dr. Yi Li Dr. Yun Ling Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology Fujian Provincial Key Laboratory of Pollution Monitoring and Control College of Chemistry Chemical Engineering and Environment Minnan Normal University 363000 Zhangzhou P. R. China College of Chemistry Fuzhou University 350116 Fuzhou P. R. China

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Core-shell [email protected] 2 O encapsulated Ag NPs nanocomposites for photooxidation-adsorption of iodide anions under visible light

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Separation and Purification technology 2021年 262卷

作者： Jiuyu Chen Aotian Gu Elvis Djam Miensah Ying Liu Peng Wang Ping Mao Chunhui Gong Yan Jiao Kai Chen Zongxiang Zhang Yi Yang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing 210094 China Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province Faculty of Chemical Engineering Huaiyin Institute of Technology Huaian 223003 China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) Nanjing University of Information Science & Technology Nanjing 210044 China Jiangsu Environmental Protection Key Laboratory of Monitoring for Organic Pollutants in Soil Taizhou Environmental Monitoring Center Taizhou 225300 China

Iodide anion (I − ) is one of the most-problematic radioactive nuclides in used nuclear fuel due to its intrinsic characteristics of a high toxicity and environmental mobility. Therefore, effective and selective elimination of I − from nuclear contaminated solution is highly beneficial for the pollution remediation purposes in the development of nuclear power, but is of significant challenge owing to the extreme conditions of the high acidity, strong ionizing radiation field and high concentration of competing anions. Herein, a novel core–shell [email protected] 2 O (ZC) encapsulated Ag nanoparticles (Ag NPs) nanocomposites have been fabricated via a facile one step self-assembly process and an environmentally friendly technique. The as-fabricated [email protected] @Cu 2 O (ZAC) nanocomposites were characterized and applied to capture of I − from aqueous solution. Adsorption studies revealed that the ternary nanocomposites showed fast removal kinetics, high photooxidation-adsorption capacity (up to 217.4 mg g −1 at pH = 3 for ZAC-2), satisfactory selectivity and high acidity resistance. Furthermore, the nanocomposites also exhibited a good reusability, as no significant change in the uptake capacity was observed even after five adsorption-regeneration cycles. Inspired by the superior features, a possible mechanism (chemical adsorption coupled with photooxidations) was proposed based on XRD, XPS and Raman spectra analysis for the pre- and post-adsorbed samples as well as the detailed adsorption experimental evidence.

关键词： Iodide anions Core–shell [email protected] 2 O [email protected] @Cu 2 O Photooxidation-adsorption

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Living Near More Greenness Associated with Increased Bone Strength: A Large Epidemiological Study in China

SSRN

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SSRN 2022年

作者： Jiang, Ye Kang Zhuo, Bai Ma Guo, Bing Zeng, Pei-Bin Guo, Yu-Ming Chen, Gong-Bo Wei, Jing He, Rui-Feng Li, Zhi-Feng Zhang, Xue-Hui Wang, Zi-Yun Li, Xuan Wang, Lei Zeng, Chun-Mei Chen, Lin Xiao, Xiong Zhao, Xing West China School of Public Health and West China Fourth Hospital Sichuan University Sichuan Chengdu China Division of Pulmonary Diseases State Key Laboratory of Biotherapy West China Hospital of Sichuan University Sichuan Chengdu China School of Medicine Tibet University Tibet Lhasa China Department of Epidemiology and Preventive Medicine School of Public Health and Preventive Medicine Monash University MelbourneVIC3004 Australia Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment Department of Occupational and Environmental Health School of Public Health Sun Yat-sen University Guangdong Guangzhou China Department of Atmospheric and Oceanic Science Earth System Science Interdisciplinary Center University of Maryland College ParkMD United States Tibet Center for Disease Control and Prevention Tibet Lhasa China Chongqing Municipal Center for Disease Control and Prevention Chongqing China School of public Health Kunming Medical University Yunnan Kunming China School of Public Health The key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education Guizhou Medical University Guiyang550025 China Jianyang Center for Disease Control and Prevention Sichuan Chengdu China

Background Numerous studies show that living near more greenness may benefit various health outcomes. Nevertheless, no studies have investigated the greenness-bone linkage in the general population with large sample sizes. Moreover, to what extent ambient air pollution (AAP) and physical activity (PA) mediate this relationship is unclear. We aimed to explore the association between greenness and bone strength in Chinese adults and the potential mediating role of AAP and PA behind it. Methods A total of 66,102 adults from the China Multi-Ethnic Cohort (CMEC) in 2018-2019 were enrolled. The Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) were employed as the residential greenness definition. Calcaneus quantitative ultrasound index (QUI) was regarded as an indicator of bone strength. Multiple linear regression models and causal mediation analyses were used to estimate the residential greenness-bone strength association and the potential pathways operating through PA and AAP. Stratification analyses were also adopted to identify susceptible populations. Results Increased residential exposure to greenness were significantly associated with higher QUI, with changes (95% confidence interval) of 3.04 (2.81, 3.26), 3.35 (3.12, 3.58), 2.44 (2.22, 2.66), and 2.71 (2.49, 2.93) for every interquartile range (IQR) increased in NDVI 500m , NDVI 1000m , EVI 500m , EVI 1000m , respectively. Gender, urbanicity, and annual family income significantly modified the links of greenness and bone strength, with more remarkable associations in males, urban residents, and subjects with higher family income. In the NDVI 500m /EVI 500m -QUI relationship, the mediating role of AAP was high reached 39.19% and 52.53%, while that of PA was only 1.64% and 1.68%. Conclusion Living in a greener place may improve bone strength, especially among males, urban residents, and the wealthier. These protective effects may be mainly operated by reducing the hazard effects of A

关键词： Housing

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Polyvinylpyrrolidone-modified Ce Al bimetallic oxide loaded on recyclable activated carbon for selective fluoride ion removal from aqueous solutions

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Journal of Water Process Engineering 2025年 75卷

作者： Fuwang Zheng Shaoying Guo Junchao Xu Juan Jiang Chunshan Wu Qiyuan Sun Yuyi Zheng Yilong Lin College of Environment and Resources College of Carbon Neutral Modern Technology Fujian Normal University Fuzhou 350007 China Pollution Control and Resource Recycling Laboratory of Fujian Province Fuzhou 350007 China Fujian College and University Engineering Research Center for Municipal Solid Waste Resourceization and Management Fuzhou 350007 Fujian China School of Pharmacy Fujian Health College Fuzhou 350101 China Fujian Xiamen Environmental Monitoring Center Station Xiamen 361022 China Fuzhou Research Academy of Environmental Science Fuzhou 350011 China

Industries that generate fluoride-laden wastewater containing high concentrations of residual fluoride ions, necessitating highly efficient fluoride removal methods. This study reports the synthesis of a novel composite adsorbent named CACP consisting the activated carbon (AC) impregnated with polyvinylpyrrolidone (PVP)-modified cerium‑aluminum bimetallic oxyhydroxides via a co-precipitation technique. The morphology, elemental distribution, pore size distribution, microstructure, and properties were analyzed using SEM-EDS, XRD, BET, and Raman spectroscopy. The effects of temperature, solution pH, fluoride concentration, and coexisting ions were investigated through intermittent experiments. Results indicated that the composite carrier exhibited stable fluoride removal, with a maximum adsorption capacity of 36.34 mg/g at 298 K. CACP maintained excellent fluoride removal performance across a wide pH range with an initial fluoride concentration of 20 mg/L. The optimal performance was achieved within a pH range of 4–10. Interference experiments revealed that only PO 4 3− exerted an inhibitory effect. Field experiments demonstrated that CACP could maintain fluoride levels within the safety thresholds for drinking water. The defluoridation process was well described by the Langmuir and pseudo-second order kinetic models, indicating that fluoride adsorption on CACP was dominated by monolayer chemisorption. The mechanism of fluoride adsorption on CACP involved ligand exchange with hydroxyl groups and the formation of F Al/Ce bonds. The composite carrier exhibited excellent regenerative properties and effectively removed fluoride from actual wastewater.

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Corrigendum to “Contrasting responses of soil organic carbon dynamics to long-term canopy and understory nitrogen addition in a subtropical forest” [Contrasting responses of soil organic carbon dynamics to long-term canopy and understory nitrogen addition in a subtropical forest. 247 (2024) 108536]

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CATENA 2025年 248卷

作者： Xiaofei Lu Heng Yu Frank S. Gilliam Xu Yue Jingchao Huang Songbo Tang Yuanwen Kuang Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing 210044 China Guangdong Provincial Key Laboratory of Applied Botany and Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China University of Chinese Academy of Sciences Beijing 101408 China Department of Earth and Environmental Sciences University of West Florida Pensacola FL 32514 USA Zhejiang Tiantong Forest Ecosystem National Observation and Research Station Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration School of Ecological and Environmental Sciences East China Normal University Shanghai 200241 China

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Sensitivity of the simulated CO2 concentration to inter-annual variations of its sources and sinks over East Asia

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Advances in Climate Change Research 2019年第4期10卷 250-263页

作者： FU Yu LIAO Hong TIAN Xiang-Jun GAO Hao CAI Zhao-Nan HAN Rui Climate Change Research Center Chinese Academy of SciencesBeijing100029China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing210044China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing10029China National Satellite Meteorological Center China Meteorological AdministrationBeijing100081China Key Laboratory of Middle Atmosphere and Global Environment Observation.Institute of Atmospheric Physics Chinese Academy of SciencesBeijing10029China

The study on how the variations in CO2 sources and sinks can affect the CO2 concentration over East Asia would be useful to provide information for policymaker concerning carbon emission *** this study,a nested-grid version of global chemical transport model(GEOS-Chem)is employed to assess the impacts of variations in meteorological parameters,terrestrial fluxes,fossil fuel emissions,and biomass burning on inter-annual variations of CO2 concentrations over East Asia in 2004—*** CO2 concentrations are compared with observations at 14 surface stations from the World Data Centre for Greenhouse Gases(WDCGG)and satellite-derived C 02 column density(XCO,)from the Gases Observing SATellite(GOSAT).The comparison shows that the simulated CO2 column density is generally higher than that of GOSAT by 1.33×10^6(annual mean point by point biases averaged over East Asia).The model reasonably captures the temporal variations of CO2 concentrations observed at the ground-based stations,but it is likely to underestimate the peaks-to-troughs amplitude of the seasonal cycle by 50%or *** simulated surface CO2 concentration in East Asia exhibits the largest inter-annual variation in December-January—February(DJF).The regional mean absolute deviation(MAD)values over East Asia are within(4.4—5.0)×10^-6 for all *** sensitivity simulations indicate that the inter-annual variations of surface CO2 concentrations are mainly driven by variations of meteorological parameters,and partly modulated by the inter-annual variations of terrestrial fluxes and fossil fuel emissions in local *** variations of the terrestrial fluxes and fossil fuel emissions may account for〜28%of the inter-annual variation of surface CO2 concentration in southern *** inter-annual variations of the peaks-to-troughs amplitude are dependent on variations of meteorological parameters,terrestrial fluxes and fossil fuel emissions in local *** influence of biomass burning emi

关键词： Carbon dioxide Inter-annual variation Terrestrial biosphere flux Fossil fuel emission

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Threat assessment of Tianjin Qilihai wetland from human activities based on principal component analysis

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IOP Conference Series: Earth and Environmental Science 2021年第1期621卷

作者： Qiang Chu Baocui Liang Shitao Peng Tianli Zheng Guoguang Li Kailei Zhang Liankun Liu Jianna Jia Key Laboratory of Environmental Protection Technology on Water Transport Ministry of Transport Tianjin research institute for water transport engineering M.O.T. Tianjin 300456 China Environmental Criteria Ministry of Education and Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300071 China

Tianjin Qilihai wetland is an important wetland nature reserve in north China, which has important ecological value. Over the last few decades, the Qilihai wetland has been developed by human on a large scale, and the natural ecosystem has been seriously disturbed by human activities. In this study, principal component analysis was conducted on 7 indicators that may have potential impacts on the Qilihai wetland from 2013 to 2017 to assess the threat of human activities to the wetland area. The results show that from 2013 to 2017, the impact of human activities on the Qilihai wetland is increasing year by year, among which the industrial development, transportation and the increase of human activities around the wetland may be the main threat for the wetland.

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Bearing Faults Diagnosis for Axle-Box of High Speed Train Based on Cepstrum Pre-Whitening and Envelope Demodulation

Bearing Faults Diagnosis for Axle-Box of High Speed Train Ba...

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International Conference on Sensing, Diagnostics, Prognostics, and control (SDPC)

作者： Zhongdong Jiang Weigang Hu Hongzheng Fang Huanzhen Fan Beijing Aerospace Measure & Control Corp (AMC). Ltd. National and Local Joint Engineering Research Centre of Equipment Life Cycle Condition Monitoring and Health Management Technology and Application Beijing China Beijing Aerospace Measure & Control Corp (AMC). Ltd. Beijing Key Laboratory of High-speed Transport Intelligent Diagnostic and Health Management Beijing China

ISBN: (数字)9781728170503

ISBN: (纸本)9781728170510

As the key load transfer component of high-speed train, axle-box bearing plays important role of load bearing, wear reducing and resistance. At present, it is a very effective method to monitor the bearing state by monitoring the vibration signal of the train axle-box online and adopting relevant methods. In this paper, a method of bearing fault diagnosis based on the combination of pre-whitening of cepstrum editing procedure (CEP) and envelope demodulation is proposed. The cepstrum pre-whitening can eliminate the periodic vibration component of the bearing vibration signal, extract the non-stationary impact vibration response of the bearing vibration signal containing noise, and analyze the envelope of the bearing vibration signal after pre-whitening to enhance the fault characteristic component in the case of the unknown optimal resonant frequency band. Through the data analysis and verification of the actual vehicle test-bed, this method can effectively diagnose the axle-box bearing fault, especially for the bearing inner ring and outer ring fault diagnosis.

关键词： Vibrations Fault diagnosis Cepstrum Acceleration monitoring Frequency control Demodulation

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Evaluating Heavy Metals Contamination in Campus Dust in Wuhan, the University Cluster in Central China: Distribution and Potential Human Health Risk Analysis

Research Square

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Research Square 2021年

作者： Liu, Shan Zhang, Xihao Zhan, Changlin Zhang, Jiaquan Xu, Jun Wang, Anglv Zhang, Huidi Xu, Jiangyan Guo, Jianlin Liu, Xianli Xing, Xinli Cao, Junji Xiao, Yulun School of Environmental Science and Engineering Hubei Polytechnic University Huangshi435003 China Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation Hubei Polytechnic University Huangshi435003 China School of Resource and Environmental Engineering Wuhan University of Science and Technology Wuhan430081 China Huangshi Ecological Environmental Monitoring Center Department of Ecology Environment of Hubei Province Hubei Huangshi435000 China School of Environmental Studies China University of Geosciences Wuhan430074 China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing100029 China

The potential health risk of heavy metals (HMs) in campus dust may threaten the health of thousands of students, teachers, and their families in Wuhan, the university cluster in Central China every day. In this research, the pollution characteristics and health risk with HMs was the first time presented in campus dust from the canteen, playground, dormitory, and school gate to date. The average HMs concentration in campus dusts ranked Pb (83.5 mg kg-1) > Cu (70.2 mg kg-1) > Zn (47.2 mg kg-1) >Cr (46.0 mg kg-1) > Ni (22.7 mg kg-1) > As (15.2 mg kg-1) > Cd (3.38 mg kg-1). The HMs would more likely to accumulate in dormitory dust and canteen dust. In the downtown area, Zn, As, and Cd had been preliminarily identified from fossil fuel combustion and natural geochemical processes. Cu and Pb would source from cooking and traffic transportation. Ni and Cr would likely reflect the contributions of natural soil weathering. Although, no significant non-carcinogenic health risks were found to students or teachers from campus dust. Their children would more likely to exposure health risks when eating in the canteen, playing on the playground, or walking around the school gate. While the incremental lifetime cancer risk values revealed respiratory intake of HMs does not pose a carcinogenic risk on the campus. © 2021, CC BY.

关键词： Risk assessment

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Selecting of global phenological field observations for validating coarse AVHRR-derived forest phenology products based on spatial heterogeneity and temporal consistency

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Ecological Informatics 2025年 90卷

作者： Qi Shao Chao Huang Yuanjun Xiao Li Liu Weiwei Liu Ran Huang Chang Zhou Wei Weng Jingfeng Huang Key Laboratory of Environmental Remediation and Ecological Health Ministry of Education Zhejiang University Hangzhou 310058 China State Key Laboratory of Soil Pollution Control and Safety Zhejiang University Hangzhou 310058 China Institute of Applied Remote Sensing and Information Technology Zhejiang University Hangzhou 310058 China Key Laboratory of Agricultural Remote Sensing and Information Systems Hangzhou 310058 China Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed College of Forestry Jiangxi Agricultural University Nanchang 330045 China Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering College of Computer and Information Technology China Three Gorges University Yichang 443002 China Department of Geography and Spatial Information Techniques Ningbo University Ningbo 315211 China School of Automation Hangzhou Dianzi University Xiasha Higher Education Zone Hangzhou 310058 China

Global phenological field observations play a crucial role in validating remote sensing products and algorithms. However, due to the spatial mismatch and scale effect between the field observations and the pixels of remote sensing phenology products, a direct comparison often leads to scale errors and increased uncertainty. Therefore, evaluating the spatial representativeness of field observations for remote sensing product validation is essential. This study developed a novel “bottom-up” evaluation framework named MSPT ( M ain land cover type, S patial heterogeneity, P oint-area consistency and T emporal consistency), which comprehensively assesses the spatial representativeness of forest phenological field observations within the coarse spatial scale. Based on MSPT method, the capability of global forest phenological field observations to support coarse-scale remote sensing validation was evaluated. Compared with the general method, MSPT significantly improved validation performance. For the start of the growing season (SOS), the root mean square error (RMSE) decreased from 49.70 to 33.75 days, and the percent bias (PBIAS) changed from −0.14 to 0.03. For the end of the growing season (EOS), the RMSE was reduced from 83.42 to 42.53 days, and the PBIAS decreased from 0.15 to 0.08. These findings demonstrate that MSPT enhances the reliability of validation datasets and effectively reducing uncertainty in the evaluation of coarse AVHRR-derived forest phenology products. The framework offers new insights into resolving the scale mismatch between field observations and the pixels of remote sensing products.

关键词： Forest phenology Field observations Spatial representativeness Spatial mismatch Satellite product AVHRR Advanced Very High Resolution Radiometer CERN Chinese Ecosystem Research Network CNW Canada nature watch DBF Deciduous Broadleaf Forests DOY Date of year EBF Evergreen Broadleaf Forests ENF Evergreen Needleleaf Forest EOS The end of the growing season GEE Google Earth Engine GPP Gross primary productivity HBEF Hubbard Brook Experimental Forest HF Harvard Forest IPS Instantaneous Phase Synchrony MAD Mean Absolute Deviation MCD12Q1 MODIS Collection 6.1 (C61) Land Cover Type Product MF Mixed Forests MIPS Mean Instantaneous phase synchrony MLCTP Main Land Cover Type Proportion MSPT Main land cover type - Spatial heterogeneity - Point-area consistency - Temporal consistency NC Nature's Calendar PBIAS Percent bias PEP725 Pan European Phenology Project RAE Relative absolute error RMSE Root mean square error sd standard deviation SOS The start of the growing season USA-NPN USA National Phenology Network VIPPHEN Vegetation Index and Phenology (VIP) Phenology Dataset WI Willmott's Index of Agreement

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