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Comparative genomic analysis of Thermus provides insights into the evolutionary history of an incomplete denitrification pathway

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mLife 2022年第2期1卷 198-209页

作者： Jian-Yu Jiao Zheng-Han Lian Meng-Meng Li Nimaichand Salam En-Min Zhou Lan Liu Hong Ming Guoxing Nie Wensheng Shu Guoping Zhao Brian P.Hedlund Wen-Jun Li State key laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)School of Life SciencesSun Yat-Sen UniversityGuangzhouChina International Joint Research Center for Karstology School of Earth SciencesYunnan UniversityKunmingChina Synthetic Biology engineering laboratory of Henan Province College of Life Sciences and TechnologyXinxiang Medical UniversityXinxiangChina College of Fisheries Henan Normal UniversityXinxiangChina Institute of Ecological Science School of Life ScienceSouth China Normal UniversityGuangzhouChina Institute of Synthetic Biology Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina School of Life Sciences University of NevadaLas VegasNevadaUSA Nevada Institute of Personalized Medicine University of NevadaLas VegasNevadaUSA State key laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqiChina

Biological denitrification is a crucial process in the nitrogen biogeochemical cycle,and Thermus has been reported to be a significant heterotrophic denitrifier in terrestrial geothermal ***,neither the denitrification potential nor the evolutionary history of denitrification genes in the genus Thermus or phylum Deinococcota is well ***,we performed a comparative analysis of 23 Thermus genomes and identified denitrification genes in 15 Thermus *** confirmed that Thermus harbors an incomplete denitrification pathway as none of the strains contain the nosZ *** character state reconstructions and phylogenetic analyses showed that narG,nirS,and norB genes were acquired by the last common ancestor of Thermales and were inherited *** contrast,nirK of Thermales was acquired via two distinct horizontal gene transfers from Proteobacteria to the genus Caldithermus and from an unknown donor to the common ancestor of all known Thermus species except Thermus *** study expands our understanding of the genomic potential for incomplete denitrification in Thermus,revealing a largely vertical evolutionary history of the denitrification pathway in the Thermaceae,and supporting the important role for Thermus as an important heterotrophic denitrifier in geothermal environments.

关键词： comparative genomics denitrification evolutionary history Thermus

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Tailoring the pore structure of graphene monolith for high volumetric performance Li-S battery

Tailoring the pore structure of graphene monolith for high v...

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2017年锂硫电池前沿学术研讨会

作者： Chen Zhang Huan Li Quan-Hong Yang School of marine Science and Technology Tianjin University School of Chemical engineering and Technology Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) shenzhen key laboratory for Graphene-based Materials Graduate School at ShenzhenTsinghua University

Volumetric energy density of the energy storage devices has attracted much attention due to the rapidly increasing demand for smart *** highly compact cathode is specifically important for Li-sulfur *** the carbon fra...

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Influence of urban spatial and socioeconomic parameters on PM_(2.5) at subdistrict level:A land use regression study in shenzhen,China

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Journal of Environmental Sciences 2022年第4期34卷 485-502页

作者： Liyue Zeng Jian Hang Xuemei Wang Min Shao School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China key laboratory of Tropical Atmosphere-Ocean System(Sun Yat-sen University) Ministry of EducationZhuhai 519000China Guangdong Provincial Field Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary Guangzhou 510275China Institute for Environmental and Climate Research Jinan UniversityGuangzhou 510632China

The intraurban distribution of PM_(2.5)concentration is influenced by various spatial,socioeconomic,and meteorological *** study investigated the influence of 37 parameters on monthly average PM_(2.5)concentration at the subdistrict level with Pearson correlation analysis and land-use regression(LUR)using data from a subdistrict-level air pollution monitoring network in shenzhen,*** of LUR models is evaluated with leave-one-out-cross-validation(LOOCV)and holdout cross-validation(holdout CV).Pearson correlation analysis revealed that Normalized Difference Built-up Index,artificial land fraction,land surface temperature,and point-of-interest(POI)numbers of factories and industrial parks are significantly positively correlated with monthly average PM_(2.5)concentrations,while Normalized Difference Vegetation Index and Green View Factor show significant negative *** the sparse national stations,robust LUR modelling may rely on a priori assumptions in direction of influence during the predictor selection *** month-bymonth spatial regression shows that RF models for both national stations and all stations show significantly inflated mean values of R^(2)compared with cross-validation *** MLR models,inflation of both R^(2)and R^(2)CVwas detected when using only national stations and may indicate the restricted ability to predict spatial distribution of PM_(2.5)*** within-sample R^(2)also exist in the spatiotemporal LUR models developed with only national stations,although not as significant as spatial LUR *** results suggest that a denser subdistrict level air pollutant monitoring network may improve the accuracy and robustness in intraurban spatial/spatiotemporal prediction of PM_(2.5)concentrations.

关键词： Air pollution PM_(2.5) Land use regression Correlation analysis Spatial parameters Cross-validation

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Preparation of Clay/Biochar Composite Adsorption Particle and Performance for Ammonia Nitrogen Removal from Aqueous Solution

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Journal of Ocean University of China 2020年第3期19卷 729-739页

作者： HUANG Xiao BAI Jie LI Kuiran ZHAO Yangguo TIAN Weijun HU Chunhui College of Environmental Science and engineering Ocean University of ChinaQingdao 266100China College of marine Life Science Ocean University of ChinaQingdao 266003China Nanjing University of Information Science and Technology Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing 210044China

This study aimed to present a novel clay/biochar composite adsorption particle, which made from abandoned reed straw and clay to remove ammonia nitrogen(NH4^+-N) from micro-contaminated water. The removal performance of NH4^+-N by composite adsorption particle was monitored under different raw material proportions and initial NH4^+-N concentration. Besides, adsorption kinetics and adsorption isotherms were investigated to reveal the adsorption mechanisms. The results showed that NH4^+-N was effectively removed under optimal proportion of biochar, foaming agent and crosslinker with 20%, 3%, and 3%, respectively. The optimal contact time was 150 min and the best removal efficiency was 88.6% at initial NH4^+-N concentration of 20 mg L^-1. The adsorption performance was well described by the second order kinetic model and Freundlich model. The novel clay/biochar composite adsorption particle in this study demonstrated a high potential for NH4^+-N removal from surface water.

关键词： clay biochar composite adsorption particle ammonia nitrogen removal adsorption mechanism

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Colorimetric Sensing of Hydrogen Peroxide Based on the Wavelength-Shift of CsPbBr_(3) Perovskite Nanocrystals on Water-Oil Interface

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Journal of Analysis and Testing 2023年第1期7卷 1-7页

作者： Heng-Gan Li Yi-Men Zhu Xue-Lian Liu Zhi-Yong Guo Ya-Ning Huang Xi Chen Department of Civil engineering and Architecture Wuyi UniversityWuyishan 354300China State key laboratory of marine Environmental Science Xiamen UniversityXiamen 361005China Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy Xiamen Huaxia UniversityXiamen 361024China Information Center Xiamen Huaxia UniversityXiamen 361024China

In this study,the halogen exchange reactions are investigated between KI or methylamine iodide in aqueous solution and CsPbBr_(3)NCs in *** mass transfer process on the interface between water and toluene affects the halogen exchange time and e *** and heating can effectively improve the halogen exchange e fficiency and increases the sensing *** photoluminescence wavelength shift of CsPbBr_(3)NCs shows good linear relationship with the concentration of I-in the range from 0 to 20 nmol/L with the detection limit of 0.2 nmol/L I^(-).Taking H_(2)O_(2)as a typical water-soluble oxide,the method is applied to the colorimetric sensing of H_(2)O_(2)in water *** the optimization of sensing conditions,the obvious wavelength shift could be observed with the different concentration range of H_(2)O_(2).A good linear relationship between the wavelength shift and the H_(2)O_(2)concentration from 0 to 1.0 mmol/L with the detection limit of 0.05 mmol/L H_(2)O_(2)could be found.

关键词： Halogen exchange Interface reaction CsPbBr_(3)perovskite nanocrystals Photoluminescence wavelength shift Colorimetric sensing

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A Boosted Communicational Salp Swarm Algorithm: Performance Optimization and Comprehensive Analysis

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Journal of Bionic engineering 2023年第3期20卷 1296-1332页

作者： Chao Lin Pengjun Wang Ali Asghar Heidari Xuehua Zhao Huiling Chen College of Computer Science and Artificial Intelligence Wenzhou UniversityWenzhou325035ZhejiangChina College of Electrical and Electronic engineering Wenzhou UniversityWenzhou325035China School of Digital Media Shenzhen Institute of Information TechnologyShenzhen518172China

The Salp Swarm Algorithm (SSA) is a recently proposed swarm intelligence algorithm inspired by salps, a marine creature similar to jellyfish. Despite its simple structure and solid exploratory ability, SSA suffers from low convergence accuracy and slow convergence speed when dealing with some complex problems. Therefore, this paper proposes an improved algorithm based on SSA and adds three improvements. First, the Real-time Update Mechanism (RUM) underwrites the role of ensuring that excellent individual information will not be lost and information exchange will not lag in the iterative process. Second, the Communication Strategy (CMS), on the other hand, uses the multiplicative relationship of multiple individuals to regulate the exploration and exploitation process dynamically. Third, the Selective Replacement Strategy (SRS) is designed to adaptively adjust the variance ratio of individuals to enhance the accuracy and depth of convergence. The new proposal presented in this study is named RCSSSA. The global optimization capability of the algorithm was tested against various high-performance and novel algorithms at IEEE CEC 2014, and its constrained optimization capability was tested at IEEE CEC 2011. The experimental results demonstrate that the proposed algorithm can converge faster while obtaining better optimization results than traditional swarm intelligence and other improved algorithms. The statistical data in the table support its optimization capabilities, and multiple graphs deepen the understanding and analysis of the proposed algorithm.

关键词： Salp swarm algorithm Swarm intelligence Global optimization Exploration Exploitation

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Removing microplastics from aquatic environments:A critical review

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Environmental Science and Ecotechnology 2023年第1期13卷 37-53页

作者： Yusheng Pan Shu-Hong Gao Chang Ge Qun Gao Sijing Huang Yuanyuan Kang Gaoyang Luo Ziqi Zhang Lu Fan Yongming Zhu Ai-Jie Wang School of Chemistry and Chemical engineering Harbin Institute of TechnologyHarbin150090China State key laboratory of Urban Water Resource and Environment School of Civil&Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055China State key Joint laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Department of Ocean Science and engineering Southern University of Science and TechnologyShenzhenChina Southern marine Science and engineering Guangdong laboratory(Guangzhou) GuangzhouChina key laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China

As one of the typical emerging contaminants,microplastics exist widely in the environment because of their small size and recalcitrance,which has caused various ecological *** paper summarizes current adsorption and removal technologies of microplastics in typical aquatic environments,including natural freshwater,marine,drinking water treatment plants(DWTPs),and wastewater treatment plants(WWTPs),and includes abiotic and biotic degradation technologies as one of the removal ***,numerous studies have shown that enrichment technologies have been widely used to remove microplastics in natural freshwater environments,DWTPs,and *** removal of microplastics via WWTPs is critical to reduce the release to the natural environment as a key connection point to prevent the transfer of microplastics from society to natural water *** technology has outstanding pre-degradation effects on microplastics,and the isolated microbial strains or enriched communities can degrade up to 50%or more of pre-processed ***,more research focusing on microplastic degradation could be carried out by combining physical and chemical pretreatment with subsequent microbial *** addition,the current recovery technologies of microplastics are introduced in this *** is incredibly challenging because of the small size and dispersibility of microplastics,and the related technologies still need further *** paper will provide theoretical support and advice for preventing and controlling the ecological risks mediated by microplastics in the aquatic environment and share recommendations for future research on the removal and recovery of microplastics in various aquatic environments,including natural aquatic environments,DWTPs,and WWTPs.

关键词： Aquatic environment Enrichment and removal Microplastics Wastewater treatment plants

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Numerical Hydrodynamics Study Around Turbine Array of Tidal Stream Farm in Zhoushan, China

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Journal of Ocean University of China 2017年第4期16卷 703-708页

作者： YU Zhiwen ZHANG Jisheng ZHAI Yanyan ZHANG Tiantian ZHENG Jinhai State key laboratory of Hydrology-Water Resources and Hydraulic engineering Hohai University Nanjing 210098 P. R. China College of Harbor Coastal and Offshore Engineering Hohai University Nanjing 210098 P. R. China Powerchina Water Environment Governance Shenzhen 518100 P. R. China China Three Gorges Corporation Beijing 100038 P. R. China

In recent decades,great efforts have been made to efficiently explore tidal stream energy due to its unique advantages of easy prediction and great *** recently launched a national tidal stream farm demonstration project in the waterway between Putuoshan and Hulu Islands in the Zhoushan *** deployment of the turbine array,it is necessary to understand the hydrodynamic changes associated with the construction of a turbine *** this study,we developed a depth-averaged hydrodynamics model that solves the shallow water governing equations to simulate the tidal hydrodynamics around the Zhoushan *** simulation results agree with field data in terms of the water elevation and stream *** considered two types of turbine arrays in this study and investigated their impacts on the local *** general,the stream velocity in the northern and southern areas is reduced due to the power take-off of the turbine array,whereas stream velocity in the western and eastern areas is slightly increased due to the blockage impact of the turbine array.

关键词： tidal stream farm turbine array tidal hydrodynamics numerical simulation demonstration project

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基于摩擦伏特效应的卤化物钙钛矿用于自供能传感器（英文）

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Science Bulletin 2023年第17期 1849-1852页

作者：吴颖辉黄龙彪潘曹峰 key laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Beijing key laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Guangdong Provincial key laboratory of Durability for Ocean Civil engineering College of Civil and Transportation Engineering Shenzhen University shenzhen key laboratory for Low-carbon Construction Material and Technology College of Civil and Transportation Engineering Shenzhen University

With the rapid development of aerospace, the Internet of Things, wearable devices, and portable instruments, the application scenarios for sensors are expanding and requiring higher performance in terms of conversion efficiency, flexibility, and ***, most sensors are powered by an external power source,which hinders the construction of flexible sensors due to their rigid nature. In recent years, self-powered sensors have been realized by using triboelectric nanogenerators (TENGs) that convert mechanical energy from the environment into electrical energy [1].

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Rational synthesis of chitin-derived nitrogen-doped porous carbon nanofibers for efficient polysulfide confinement

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Nano Research 2023年第6期16卷 8478-8487页

作者： Shanfeng Yang Shuiping Luo Xinji Dong Li Tian Pei Kang Shen Jinliang Zhu School of Resources Environment and MaterialsCollaborative Innovation Centre of Sustainable Energy MaterialsCollege of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004China Department of Chemistry and Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology(SUSTech)Shenzhen 518055China Hunan Provincial key laboratory of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and TechnologyXiangtan 411201China

Principles of inexpensive biotechnology are being increasingly used to address the problems posed by the use of lithium-sulfur *** used chitin,a low-cost marine biowaste product,as a precursor for the in-situ preparation of chitin-derived nitrogendoped hierarchical porous carbon fibers(CNHPCFs)containing abundant *** materials are characterized by varying morphologies and high specific surface areas and present a hierarchical porous *** adsorb polysulfides,exhibit good ionic conductivity,and can be potentially used to generate green *** properties help address the problems of volume expansion and slow *** CNHPCF-1@S cathode exhibits excellent cycling performance and high capacity(1368.80 mAh·g^(−1)at 0.2 C;decay rate:0.011%per turn at 5 C).The high electrochemical reversibility recorded for CNHPCF-1@S and the stepwise reaction mechanism followed were studied using the in-situ X-ray diffraction and in-situ Raman spectroscopy *** results reported herein can potentially help develop new ideas for the recycling and treatment of marine *** results can also provide a platform to improve the application prospects of lithium-sulfur batteries.

关键词： chitin carbon fiber Li-S battery in-situ Raman in-situ X-ray diffraction

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