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| 1 | Pathological evidence for residual SARS-CoV-2 in pulmonary tissues of a ready-for-discharge patient显示文摘Dear Editor,SARS-CoV-2,a novel coronavirus and causing COVID-19,has given rise to a worldwide pandemic.1,2 So far,tens of thousands of COVID-19 patients have been clinically cured and discharged,but multiple COVID-19 cases showed SARS-CoV-2 positive again in discharged patients,3 which raises an attention for the discharged patients.Also,there is an urgent need to understand the pathogenesis of SARS-CoV-2 infection.Here,we conducted postmortem pathologic study in a ready-fordischarge COVID-19 patient who succumbed to sudden cardiovascular accident.Pathological examination revealed SARSCoV-2-viruses remaining in pneumocytes and virus-caused pathological changes in the lungs.Our study provided new insights into SARS-CoV-2 pathogenesis and might facilitate the improvement of clinical guideline for virus containment and disease management. | Xiao-Hong Yao Zhi-Cheng He Ting-Yuan Li Hua-Rong Zhang Yan Wang Huaming Mou Qiaonan Guo Shi-Cang Yu Yanqing Ding Xindong Liu Yi-Fang Ping Xiu-Wu Bian | 2020 | Cell Research2020，30，6： | 35 |
| 2 | Spatial and temporal evolutions of groundwater arsenic approximately along the flow path in the Hetao basin, Inner Mongolia显示文摘Patchy distribution of high As groundwater has normally been observed in As-affected areas. Spatial and temporal evolutions help in better understanding mechanisms of As mobilization and in developing effective strategies for ensuring drinking water safety. Four multilevel samplers were installed approximately along the groundwater flow path to investigate spatial and temporal variations in groundwater As in the Hetao basin, Inner Mongolia. Both water chemistry and groundwater level were monitored for about two years. Groundwater As concentration generally showed increasing trends, and Eh values showed decreasing trends along the flow path, indicating that As was mobilized via reductive dissolution of Fe oxides. However, in evaporation discharge area, shallow groundwater As was generally lower than those upstream and downstream. In addition to evaporation, siderite and pyrite precipitations controlled groundwater As concentrations. The negative correlations between As concentration and SIpyrite (or SIsiderite) implied that siderite and pyrite precipitations wold scavenge groundwater As and lower As concentration. Temporal variation showed different trends in different locations. It may reflect replenishment of high/low As groundwater for the increase/decrease in As concentrations, resulting from water level fluctuation. The increase trends in groundwater As concentrations at depth around 15m in the discharge areas would result from the increase in the recharge of underlying groundwater (20m) with high As concentration due to enhanced evaporation in the seasons with high water levels. The investigation suggested that monitoring of groundwater As should be routinely carried out to ensure the drinking water safety in the As-affected areas. | GUO HuaMing ZHANG Yang JIA YongFeng ZHAO Kai KIM Kangjoo | 2013 | Chinese Science Bulletin2013，58，25： | 5 |
| 3 | Batch and Column Experiments on Fluoride Removal from Waters Using Modified Zeolite显示文摘High fluoride groundwater occurs widely in China, presenting a quite serious environmental problem. Zeolite from Xinyang, China was tested as the fluoride removing adsorbent. Batch and column experiments on fluoride removal using modified zeolites treated with hydrochloric acid, sodium hydroxide, sodium chloride and ferric chloride, respectively show that 0.1 mol/L HCl modified zeolite can be used as an adsorbent for fluoride, with an adsorption capacity of 173.16 mg/kg. | Guo Huaming Wang Yanxin Faculty of Engineering, China University of Geosciences, Wuhan 430074, China | 2000 | Journal of Earth Science2000，19，3： | 2 |
| 4 | Hydrogeochemical processes in shallow quatemary aquifers from the northern part of the Datong Basin, China显示文摘 | Huaming Guo Yanxin Wang | 2004 | Applied Geochemistry2004，19，： | 1 |
| 5 | Fluoride adsorption on modified natural siderite: optimization and performance 显示文摘 | Yue Shah Huaming Guo | 2013 | Chemical Engineering Journal2013，223，： | 1 |
| 6 | Determination of the activation energy for desorption by derivative thermogravimeWic analysis显示文摘 | LI Xiang GUO Haifu CHEN Huaming | 2006 | Adsorption Science and Technology2006，24，10： | 1 |
| 7 | Controlled synthesis of different morphologies of BaWO 4 crystals via a surfactant-assisted method显示文摘 | Zhijun Luo Huaming Li Jiexiang Xia Wenshuai Zhu Junxiang Guo Beibei Zhang | 2007 | Journal of Crystal Growth2007，，2： | 1 |
| 8 | Geochemical controls on arsenic and rare earth elements approximately along a groundwater flow path in the shallow aquifer of the Hetao Basin, Inner Mongolia显示文摘 | Huaming Guo Bo Zhang Guangcai Wang Zhaoli Shen | 2009 | Chemical Geology2009，，1： | 1 |
| 9 | Geochemical characteristics ofshallow groundwater in Datong Basin,northwestern China显示文摘 | Guo Huaming Wang Yanxin | 2005 | Journal of Geochemical Exploration2005，87，： | 1 |
| 10 | Adsorption of arsenic species from water using activated siderite-hematite column filters显示文摘 | Guo Huaming Stuben Doris Berner Zolt | 2008 | Journal of Hazardous Materials2008，151，： | 1 |
| 11 | Adsorption of fluoride on synthetic siderite from aqueous solution 显示文摘 | Liu Qiong Guo Huaming Yue Shan | 2010 | Journal of Fluorine Chemistry2010，131，： | 1 |
| 12 | Groundwater geochemistry and its implications for arsenic mobilization in shallow aquifers of the Hetao Basin, Inner Mongolia显示文摘 | Huaming Guo Suzhen Yang Xiaohui Tang Yuan Li Zhaoli Shen | 2007 | Science of the Total Environment2007，，1： | 1 |
| 13 | Groundwa- ter hydrochemical characteristics and processes along flow paths in the North China Plain 显示文摘 | Xing Lina Guo Huaming Zhan Yanhong | 2013 | Journal of Asi- an Earth Sciences2013，，7071： | 1 |
| 14 | Groundwater arsenic biogeochemistry-Key questions and use of tracers to understand arsenic-prone groundwater systems显示文摘Over 100,000,000 people worldwide are exposed to high arsenic groundwater utilised for drinking or cooking.The consequent global avoidable disease burden is estimated to be of the order of 100,000 avoidable deaths or more per annum from just direct exposures - i.e.excluding indirect exposure (from rice and other foods) and excluding morbidity.Notwithstanding 1000s of papers published on arsenic (hydro)(bio)geochemistry,there remain a number of key outstanding questions to be addressed in relation to arsenic geoscience - these include questions related to:(i) the role of human activities - irrigation,agriculture and other land uses - on arsenic mobilisation in groundwaters;(ii) the specific sources,nature and role of organics,minerals and microbial communities involved in arsenic mobilisation;(iii) the relationship to microscopic to macroscopic scale geological (including tectonic) and evolution processes;(iv) unravelling the over-printing of multiple processes in complex highly heterogeneous aquifer systems and (v) using increasing understanding of the controls of arsenic mobility in groundwaters systems to informing improved locally-relevant remediation and mitigation approaches.This article further summarises how the 9 further papers in this Special Issue address some of these questions through the use of chemical and/or isotopic tracers. | David A. Polya Charlotte Sparrenbom Saugata Datta Huaming Guo | 2019 | Geoscience Frontiers2019，10，5： | 1 |
| 15 | Modeling transport of arsenic through modified granular natural siderite filters for arsenic removal显示文摘Groundwater arsenic (As) contamination is a hot issue,which is severe health concern worldwide.Recently,many Fe-based adsorbents have been used for As removal from solutions.Modified granular natural siderite (MGNS),a special hybrid Fe(II)/Fe(III) system,had higher adsorption capacity for As(III) than As(V),but the feasibility of its application in treating high-As groundwater is still unclear.In combination with transport modeling,laboratory column studies and field pilot tests were performed to reveal both mechanisms and factors controlling As removal by MGNS-filled filters.Results show that weakly acid pH and discontinuous treatment enhanced As(III) removal,with a throughput of 8700 bed volumes (BV) of 1.0 mg/L As(III) water at breakthrough of 10 mg/L As at pH 6.Influent HCO3^- inhibited As removal by the filters.Iron mineral species,SEM and XRD patterns of As-loading MGNS show that the important process contributing to high As(III) removal was the mineral transformation from siderite to goethite in the filter.The homogeneous surface diffusion modeling (HSDM) shows that competition between As(III) and HCO3^- with adsorption sites on MGNS was negligible.The inhibition of HCO3^- on As(III) removal was connected to inhibition of siderite dissolution and mineral transformation.Arsenic loadings were lower in field pilot tests than those in the laboratory experiments,showing that high concentrations of coexisting anions (especially HCO3^-- and SiO4^4-),high pH,low EBCT,and low groundwater temperature decreased As removal.It was suggested that acidification and aeration of high- As groundwater and discontinuous treatment would improve the MGNS filter performance of As removal from real high-As groundwater. | Fulan Li Huaming Guo Kai Zhao Wei Xiu Jiaxing Shen Yi Chen | 2019 | Geoscience Frontiers2019，10，5： | 1 |
| 16 | Wear-resistance comparison of carbon nanotubes and conventional silicon-probes for atomic force microscopy显示文摘 | GUO Liqiu WANG Rui XU Huaming | 2005 | Wear2005，258，1112： | 1 |
| 17 | Geochemical characteristics of shallow groundwater in Datong basin, northwestern China 显示文摘 | Guo Huaming Wang Yanxin | 2005 | Journal of Geochemical Exploration2005，87，： | 1 |
| 18 | Natural occurrence of arsenic in shallow groundwater,Shanyin,Datong Basin,China显示文摘 | Guo Huaming Wang Yanxin Shpeizer G M | 2003 | J Environ sci Health2003，38，11： | 1 |
| 19 | Geo- chemical controls on arsenic and rare earth elements approxi- mately along a groundwater flow path in the shallow aquifer of the Hetao Basin, Inner Mongotia显示文摘 | GUO Huaming ZHANG Bo WANG Guangcai | 2010 | Chemical Geology2010，270，234： | 1 |
| 20 | Groundwater hydrochemical characteristics and processes along flowpaths in the North China Plain 显示文摘 | Xing Lina Guo Huaming Zhan Yanhong | 2013 | Journal of Asian Earth Sciences2013，7071，： | 1 |
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