作者机构：
[Chen, Jie; Li, Juanyong; Xiong, Ting] School of Frontier Crossover Studies, Hunan University of Technology and Business, Changsha;410205, China;[Zhang, Hanyan; Jiang, Longbo; Wang, Hou; Yuan, Xingzhong] College of Environmental Science and Engineering, Hunan University, Changsha;410082, China;[Li, Yifu] School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha
通讯机构：
[Xingzhong Yuan] C;[Ting Xiong] S;College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China<&wdkj&>School of Frontier Crossover Studies, Hunan University of Technology and Business, Changsha, 410205, PR China<&wdkj&>Institute of Digital Intelligence and Smart Society, Hunan University of Technology and Business, Changsha, 410205, PR China
关键词：
Biochar;Immobilization;Magnesium ferrite;Montmorillonite;Potentially toxic element
期刊：
Journal of Marine Science and Engineering,2022年10(11):1618- ISSN：2077-1312
通讯作者：
K. Qu
作者机构：
[Guo, L.; Qu, K.; Huang, J. X.; Li, X. H.] Changsha Univ Sci & Technol, Sch Hydraul & Environm Engn, Changsha 410114, Peoples R China.;[Qu, K.] Key Lab Water Sediment Sci & Water Disaster Preve, Changsha 410114, Peoples R China.;[Qu, K.] Key Lab Dongting Lake Aquat Ecoenvironm Control &, Changsha 410114, Peoples R China.
通讯机构：
[K. Qu] K;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China<&wdkj&>School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China<&wdkj&>Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
extreme wave;focused wave;permeable breakwater;wave attenuation;nonhydrostatic model
摘要：
Extreme waves, called rogue waves or freak waves, usually occur unexpectedly and with very large wave heights. In recent years, extreme waves were reported not only in deep ocean waters but also in shallow waters, which threaten the safety and intactness of the coastal regions. To prevent the coastal infrastructures and communities from the devastating power of extreme surges and waves, many coastal defense structures were built along the coastline, i.e., submerged permeable breakwaters. However, the number of studies on the hydrodynamic characteristics of a submerged permeable breakwater under the impact of extreme waves is relatively few. In addition, wave focusing has been widely used to generate extreme waves in the past few decades. Hence, as a necessary supplement to the previous research work, the hydrodynamic performance of a submerged permeable breakwater under the impacts of focused wave groups was numerically studied by using a nonhydrostatic numerical wave model (NHWAVE). The influences of several main factors, such as the incident significant wave height, water depth, wave peak period, porosity of the breakwater (n), and the side slope angle of the breakwater, were considered. It is expected that the results of this study will further strengthen the research on the hydrodynamic characteristics of a submerged permeable breakwater under extreme wave conditions.
期刊：
Journal of Environmental Management,2022年319:115655 ISSN：0301-4797
通讯作者：
Sha Wu
作者机构：
[Yang, Tao; Chen, Hong; Wang, Hong; Wu, Sha; Yang, Enzhe; Liu, Ke; Chen, Jing] Changsha Univ Sci & Technol, Sch Hydraul Engn, Key Lab Dongting Lake Aquat Ecoenvironm Control &, Changsha 410004, Peoples R China.;[Yang, Tao; Chen, Hong; Wang, Hong; Wu, Sha; Yang, Enzhe; Liu, Ke; Chen, Jing] Key Lab Water Sediment Sci & Water Disaster Preven, Changsha 410114, Peoples R China.;[Shen, Zhiqiang] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China.;[Sanjaya, Eli Hendrik] Univ Negeri, Chem Dept, Malang 65145, Indonesia.
通讯机构：
[Sha Wu] K;Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410004, China<&wdkj&>Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha, 410114, China
通讯机构：
[Yongzhou Cheng] S;School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha, 410114, China<&wdkj&>Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha, 410114, China<&wdkj&>State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China
关键词：
Inclined pile;Local scour;Combined wave and current action;Wave-current flume;Scour depth prediction
摘要：
Compared to vertical piles, the position relationship between the inclined pile and seabed has some extra effects on the surrounding wave-current interaction and sediment transporting mechanism. A series of local scour ex-periments with wave-current flume are conducted for investigating scour characteristics and influencing factors around inclined piles and vertical piles at a certain inclination angles range. The experimental results indicates that there are substantial differences in scouring variation patterns between upstream inclined piles, downstream inclined piles and vertical piles, and the suppression impact of pile inclination angle on scouring was closely related to the wave-current conditions. The magnitude relationship of relative scour depth (S/D) between the inclined and vertical piles will change visibly when the sand transporting capacity under wave-current action reaches a certain level. The obtained multiple regression equation based on mixing training datasets could provide reasonable estimation for scour depth around inclined and vertical piles under wave-current and only current action.
期刊：
International Journal of Industrial and Systems Engineering,2022年41(3):349-362 ISSN：1748-5037
通讯作者：
Xiong, H.-H.
作者机构：
[Lie Yu] School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410114, China;[Chuan He; Jin Lin; Xin Xiang] School of Architecture, Changsha University of Science and Technology, Changsha 410114, China;[Hui-hua Xiong] School of Architecture and Urban Planning, Hunan City University, Yiyang, 413000, China
通讯机构：
School of Architecture and Urban Planning, Hunan City University, Yiyang, China
作者机构：
[Liu, Yujiao] Yangtze River Sci Res Inst, River Res Dept, Wuhan 430010, Peoples R China.;[Liu, Yujiao] Minist Water Resources, Key Lab River & Lake Regulat & Flood Control Midd, Yangtze River Sci Res Inst, Wuhan 430010, Peoples R China.;[Chai, Yuanfang] Vrije Univ Amsterdam, Dept Earth Sci, Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands.;[Li, Yitian; Yue, Yao; Huang, Yuyun] Wuhan Univ, Sch Water Resources & Hydropower Engn, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China.;[Yang, Yunping] Minist Transport, Key Lab Engn Sediment, Tianjin Res Inst Water Transport Engn, Tianjin 300456, Peoples R China.
作者机构：
[Wang, Zhi] School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou 450001,China;[Hu, Xuyue] School of Hydraulic Engineering,Changsha University of Science and Technology,Changsha 410114,China;[Li, Peng; Zhou, Chunguang; Zhang, Jing] Zhongnan Engineering Corporation Limited Power China,Changsha 410014,null,China;[Meng, Qingfeng] School of Hydraulic Engineering,Changsha University of Science and Technology,Changsha 410114,China<&wdkj&>Zhongnan Engineering Corporation Limited Power China,Changsha 410014,null,China
通讯机构：
[Zhi Wang; Xuyue Hu; Qingfeng Meng] S;[Peng Li; Chunguang Zhou; Jing Zhang] Z;School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou 450001,China<&wdkj&>School of Hydraulic Engineering,Changsha University of Science and Technology,Changsha 410114,China<&wdkj&>Zhongnan Engineering Corporation Limited Power China,Changsha 410014,null,China<&wdkj&>School of Hydraulic Engineering,Changsha University of Science and Technology,Changsha 410114,China<&wdkj&>Zhongnan Engineering Corporation Limited Power China,Changsha 410014,null,China
关键词：
Introduction;Materials and Methods;Results;Discussion;Conclusion;Abstract;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interests;Authors’ Contributions;Funding Statement;Acknowledgements;Acknowledgments;Supplementary Materials;Reference;Dataset Description;Dataset Files;Abstract;Introduction;Introduction and Materials;Introduction and Methods;Materials;Materials and Methods;Methods;Results;Discussion;Results and Discussion;Discussion and Conclusion;Results and Conclusion;Conclusion;Conclusions;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interest;Authors’ Contributions;Funding Statement;Acknowledgements;Supplementary Materials;References;Appendix;Abbreviations;Preliminaries;Introduction and Preliminaries;Notation;Proof of Theorem;Proofs;Analysis of Results;Examples;Numerical Example;Applications;Numerical Simulation;Model;Model Formulation;Systematic Palaeontology;Nomenclatural Acts;Taxonomic Implications;Experimental;Synthesis;Overview;Characterization;Background;Experimental;Theories;Calculations;Model Verification;Model Implementation;Geographic location;Study Area;Geological setting;Data Collection;Field Testing;Data and Sampling;Dataset;Literature Review;Related Works;Related Work;System Model;Methods and Data;Experimental Results;Results and Analysis;Evaluation;Implementation;Case Presentation;Case Report;Search Terms;Case Description;Case Series;Background;Limitations;Additional Points;Case;Case 1;Case 2 etc.;Concern Details;Retraction Details;Copyright;Related Articles
通讯机构：
[Zhe Kong] S;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China<&wdkj&>National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China<&wdkj&>Research Center for Environmental Bio-technology, Suzhou University of Science and Technology, Suzhou 215009, China<&wdkj&>Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
摘要：
【目的】探究不同进水碳氮比值（carbon to nitrogen ratio,C/N）对新型单级强化自养脱氮系统脱氮性能的影响，探究该系统所能耐受的最佳进水C/N值，解决该系统在实际工程应用中的技术瓶颈问题，推动洞庭湖水质污染问题的解决。【方法】以自主创新的气升式内循环新型单级强化自养脱氮系统为试验装置，采用长期连续试验结合异位活性批次试验的方法，通过调节、控制反应器曝气量、温度、氢离子浓度指数（potential of hydrogen,pH）、进水氨氮和有机物含量等重要工艺参数，定期采集系统的污泥样品，测定污泥含量，运用高通量测序技术，研究不同进水C/N值对系统的长期连续运行性能及微生物群落演替的影响。【结果】（1）通过为期364d的长期连续运行监测发现：当进水C/N值从0.0增加到2.0且系统运行稳定时，总氮去除效率维持在80%以上；当进水C/N值达到2.0时，系统的脱氮性能最高；当进水C/N值超过2.0时，系统的脱氮性能下降，且达到稳定运行状态所需的时间更长。（2）在该系统稳定运行时，其有机物去除率也能维持在较高水平。（3）系统的厌氧氨氧化菌的优势菌属为Candidatus Brocadia，氨氧化菌的优势菌属为Nitrosomonas，反硝化菌的优势菌属为Denitratisoma；随着系统进水C/N值的增大，Candidatus Brocadia和Nitrosomonas的相对丰度一直呈下降趋势。【结论】综合运行性能与经济成本，认为气升式内循环新型单级自养脱氮系统的最佳进水C/N值为1.0。此时，虽然氨氧化菌与厌氧氨氧化菌的相对丰度不是最大的，活性不是最强的，但是工艺内各功能菌群的协同作用使得脱氮性能维持在较高水平。当C/N值超过最优值后，脱氮性能有所降低。
作者：
FU Ze-ding;JIANG Jie;FU Xiao-hua;LIANG Ying-yi;ZHENG Qing-xing;...
期刊：
生态经济,2022年18(02):82-89 ISSN：1671-4407
作者机构：
[FU Ze-ding] School of Hydraulic Engineering, Changsha University of Science & Technology;[FU Xiao-hua; ZHENG Qing-xing; JIANG Jie; LIANG Ying-yi; WANG He] Ecological Environment Management and Assessment Center, Central South University of Forestry and Technology
摘要：
South China is located in the subtropical zone,with excellent hydrothermal conditions and abundant species.Compared with other regions in China,the environment and natural resources have obvious innate advantages.The crisscross of hills and small plains are the most typical topographic and geomorphic features in South China.Its evaluation of eco-environmental competitiveness is different from other regions in China in terms of index selection and evaluation process.Based on the literature results,combining with the particularity of the southern hilly region and according to certain principles,we construct an evaluation model of ecological environment in southern hilly region,which includes five first-level indicators of ecological resources,environmental status,enconomic society,management response and environmental potential and fifteen second-level index sperated from the first-level,such as forest coverage rate and ambient air quality composite index and so on.Taking Hunan Province,a tipical region of southern hills,as an empirical example to analyse,the conclusion has been verified by other scholars and the new model is more operable than the existing models and methods,which indicates that the model constructed is practical and feasible.
