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A High-Accuracy Curve Boundary Recognition Method Based on the Lattice Boltzmann Method and Immersed Moving Boundary Method

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2533-2557页

作者： Jie-Di Weng yong-Zheng Jiang Long-Chao Chen Xu Zhang guan-yong Zhang Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment Hunan University of Science and TechnologyXiangtan411201China School of Mechanical Engineering Hunan Chemical Vocational Technology CollegeZhuzhou412000China

Applying numerical simulation technology to investigate fluid-solid interaction involving complex curved bound-aries is vital in aircraft design,ocean,and construction ***,current methods such as Lattice Boltzmann(LBM)and the immersion boundary method based on solid ratio(IMB)have limitations in identifying custom curved ***,IBM based on velocity correction(IBM-VC)suffers from inaccuracies and numerical ***,this study introduces a high-accuracy curve boundary recognition method(IMB-CB),which identifies boundary nodes by moving the search box,and corrects the weighting function in LBM by calculating the solid ratio of the boundary nodes,achieving accurate recognition of custom curve *** addition,curve boundary image and dot methods are utilized to verify *** findings revealed that IMB-CB can accurately identify the boundary,showing an error of less than 1.8%with 500 ***,the flow in the custom curve boundary and aerodynamic characteristics of the NACA0012 airfoil are calculated and compared to *** showed that IMB-CB yields lower lift and drag coefficient errors than IBM-VC,with a 1.45%drag coefficient *** addition,the characteristic curve of IMB-CB is very stable,whereas that of IBM-VC is *** the moving boundary problem,LBM-IMB-CB with discrete element method(DEM)is capable of accurately simulating the physical phenomena of multi-moving particle flow in complex curved *** research proposes a new curve boundary recognition method,which can significantly promote the stability and accuracy of fluid-solid interaction simulations and thus has huge applications in engineering.

关键词： Fluid-solid interaction curve boundary recognition method Lattice Boltzmann method immersed moving boundary method

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Harnessing the holobiont to alleviate the stress of aluminum toxicity to rice

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Soil Ecology Letters 2024年第1期6卷 7-9页

作者： Hong-Zhe Li yong-guan Zhu Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Fujian Key Laboratory of Watershed Ecology Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeiing 100085China

Plant microbiome(including the microbiomes in the rhizosphere,phyllosphere,and endosphere)has been hailed as the second genome of the host,and plays a critical role in the health and fitness of the *** to clinical medicine,microbiome transplant has been suggested to improve ecosystem restoration and crop production in degraded environment(Jurburg et al.,2022).This concept aligns with recent findings that emphasize the significant impact of soil and plant-associated microbiomes in agricultural productivity and the health of host plants(Wubs et al.,2016;Carthey et al.,2020;Mazza Rodrigues and Melotto,2023).

关键词： finding Harness soil

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A Comprehensive Overview of CFN From a Commonsense Perspective

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Machine Intelligence Research 2024年第2期21卷 239-256页

作者： Ru Li Yunxiao Zhao Zhiqiang Wang Xuefeng Su Shaoru Guo yong guan Xiaoqi Han Hongyan Zhao Key Laboratory of Computational Intelligence and Chinese Information Processing of Ministry of Education School of Computer and Information TechnologyShanxi UniversityTaiyuan 030006China

Chinese FrameNet(CFN)is a scenario commonsense knowledge base(CKB)that plays an important role in research on Chinese language *** is based on the theory of frame semantics and English FrameNet(FN).The CFN knowledge base contains a wealth of scenario commonsense knowledge,including frames,frame elements,and frame relations,as well as annotated instances with rich scenario-related labels on Chinese sentences and *** this paper,we conduct a comprehensive overview of CFN from a commonsense perspective,covering topics such as scenario commonsense representation,CFN resources,and its *** also summarize recent breakthroughs and identify future research ***,we introduce the concept of scenario commonsense,including its definitions,examples,and representation methods,with a focus on the relationship between scenario commonsense and the frame concept in *** addition,we provide a comprehensive overview of CFN resources and their applications,highlighting the newly proposed frame-based discourse representation and a human-machine collaboration framework for expanding the CFN ***,we explore emerging topics such as expanding the CFN resource,improving the interpretability of machine reading comprehension,and using scenario CKBs for text generation.

关键词： Chinese FrameNet(CFN) commonsense scenario commonsense frame knowledge

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Soil microbial ecology through the lens of metatranscriptomics

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Soil Ecology Letters 2024年第3期6卷 1-15页

作者： Jingjing Peng Xi Zhou Christopher Rensing Werner Liesack yong-guan Zhu State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationChina Agricultural UniversityBeijing 100193China Institute of Environmental Microbiology College of Resource and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China Max Planck Institute for Terrestrial Microbiology Marburg 35043Germany State Key Laboratory of Urban and Regional Ecology Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

Metatranscriptomics is a cutting-edge technology for exploring the gene expression by,and functional activities of,the microbial community across diverse ecosystems at a given time,thereby shedding light on their metabolic responses to the prevailing environmental *** double-RNA approach involves the simultaneous analysis of rRNA and mRNA,also termed structural and functional *** contrast,mRNA-centered metatranscriptomics is fully focused on elucidating community-wide gene expression profiles,but requires either deep sequencing or effective rRNA *** this review,we critically assess the challenges associated with various experimental and bioinformatic strategies that can be applied in soil microbial ecology through the lens of functional *** particular,we demonstrate how recent methodological advancements in soil metatranscriptomics catalyze the development and expansion of emerging research fields,such as rhizobiomes,antibiotic resistomes,methanomes,and *** review provides a framework that will help to design advanced metatranscriptomic research in elucidating the functional roles and activities of microbiomes in soil ecosystems.

关键词： metatranscriptomics mRNA MAGs rhizobiont resistome virome

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Utilization of human excrement in pre-modern China,its theoretical interpretations and ecological significance

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Soil Ecology Letters 2024年第1期6卷 1-5页

作者： Xin-Hao Du Yuan-Ming Song Ji-An Cai yong-guan Zhu Institute for the History of Natural Sciences Chinese Academy of SciencesBeijing 100190China Institute for Cultural Heritage and History of Science&Technology University of Science and Technology BeijingBeijing 100083China Faculty of History Nankai UniversityTianjin 300350China Research Center for Eco Environmental Sciences Chinese Academy of SciencesBeijing 100085China

The use of human excrement as fertilizer is a characteristic of traditional Chinese agriculture..The application of excrement from urban residents in agriculture since the Song Dynasty has ensured the cleanliness and hygiene of *** early as the Ming Dynasty,the Chinese people defined the principle of fertilizing fields with human excrement from the perspective of *** concept Peri-URban ecosystems(PURE)provides inspiration forurban-rural symbiosis regarding *** use of human excrement in fertilization is a major attribute differentiating the Chinese traditional agriculture from the agriculture in other regions around the *** the fact that the exact record showing that human excrement was used as fertilizer in China emerged in the Western Han Dynasty(B.C.202-A.D.8),such records did not become prevalent until the Southern Song Dynasty(A.D.1127-1279).In the Ming and Qing eras(A.D.1368-1912),human excrement was even considered"top-class fertilizerand servedas themost essential fertilizerin farmland *** importance of human excrement in the Ming and Qing was mainly reflected by farmers'purchase of human excrement from urban *** fertilization practices became increasingly popular during the period,men of letters built a localized theoretical system centering on human *** the use of human excrement had both positive and negative impacts on public health and the ecological environment,the positive overshadowed the negativeas a ***,it is worth pondering on how the utilization of human excrement as an agricultural resource can be improved so that a material cycle system can be rebuilt to re-connect the urban and rural areas.

关键词： excrement fertilizer theorization urban and rural ecology public health

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Collembolans maintain a core microbiome responding to diverse soil ecosystems

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Soil Ecology Letters 2024年第1期6卷 33-46页

作者： Zhe-Lun Liu Dong Zhu Yi-Fei Wang yong-guan Zhu Min Qiao State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

The unique gut habitat led to a core intestinal micro-biome in diverse soil *** collembolan guts may help eliminate soil ***-selection carried more weight on community assembly of gut *** invertebrates are widely distributed in the ecosystem and are essential for soil ecological ***-brate gut microbiome plays an important role in host health and has been considered as a hidden microbial ***,little is known about how gut microbiome in soil invertebrates respond to diverse soil *** on a laboratory microcosm experiment,we characterized the assembling of microbiome of soil collembolans(Folsomia candida)from six representative regions of the soil ecosystem which they *** showed that collembolan gut microbial communities differed significantly from their surrounding soil microbial communities.A dominant core gut microbiome was identified in gut *** analyses indicated that deterministic process dominated in the community assembly of collembolan gut *** results further demonstrate a dominant contribution of host selection in shaping gut *** is also worthy to mention that pathogens,such as common agricultural phytopathogenic fungi Fusarium,were involved in core microbiome,indicating that collembolans could act as vectors of *** results unravelled the existence of gut core microbiome of collembolans in soil ecosystems and provided new insights for under-standing the crucial role of gut microbiome of soil fauna in maintaining microbial biodiversity and stability of soil ecosystems.

关键词： gut microbiome collembolan core microbiome community assembly

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动态人工模拟海水环境下两种B10铜镍合金腐蚀行为

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材料工程 2024年第6期52卷 201-210页

作者：苏英管勇中国科学技术大学材料科学与工程学院合肥230026 中国科学院金属所沈阳110016

采用动电位极化曲线和电化学阻抗谱测试并结合XPS测试和SEM/EDS微观表征,通过自制的冲刷腐蚀实验装置研究了两种B10铜镍合金在不同流速和不同时间下的冲刷腐蚀行为,比较了两种铜镍合金在不同冲刷条件下的腐蚀差异。结果表明,两种铜镍合... 详细信息

采用动电位极化曲线和电化学阻抗谱测试并结合XPS测试和SEM/EDS微观表征,通过自制的冲刷腐蚀实验装置研究了两种B10铜镍合金在不同流速和不同时间下的冲刷腐蚀行为,比较了两种铜镍合金在不同冲刷条件下的腐蚀差异。结果表明,两种铜镍合金的腐蚀速率随时间的变化规律相似,在不同的流速下冲刷2 h后腐蚀速率较高,冲刷8 h后腐蚀速率较低。在低于4 m/s的流速冲刷不同时间后,A合金的耐蚀性整体上高于B合金的耐蚀性;当流速高于3 m/s且较长时间冲刷后,B合金的耐蚀性更好。这与钝化膜中Ni,Fe的化学态无关而与晶粒尺寸和孪晶数量以及Ni,Fe元素的富集有关。长时间高流速冲刷会促进钝化膜中Ni和Fe元素的富集,有利于增强钝化膜的耐蚀性。

关键词： B10铜镍合金电化学技术冲刷腐蚀钝化膜腐蚀形貌

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Fundamentals and application in phytoremediation of an efficient arsenate reducing bacterium Pseudomonas putida ARS1

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Journal of Environmental Sciences 2024年第3期137卷 237-244页

作者： Ze-Wen Wang guang Yang Jian Chen Yaoyu Zhou Avelino Nunez Delgado Hui-Ling Cui Gui-Lan Duan Barry P.Rosen yong-guan Zhu Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450052China State Key Lab of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Cellular Biology and Pharmacology Florida International UniversityHerbert Wertheim College of MedicineMiamiFL33199USA University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China College of Resources and Environment Hunan Agricultural UniversityChangsha 410128China Department of Soil Science and Agricultura Chemistry Engineering Polytechnic SchoolUniversity of Santiago de CompostelaCampus Univ.s/n27002LugoSpain

Arsenic is a ubiquitous environmental ***-mediated arsenic biotransformations significantly infuence arsenic mobility and *** transformations by soil and aquatic organisms have been well documented,while little is known regarding effects due to endophytic *** endophyte Pseudomonas putida ARS1 was isolated from rice grown in arsenic contaminated *** ARS1 shows high tolerance to arsenite(As(Ⅲ))and arsenate(As(V)),and exhibits efficient As(V)reduction and As(Ⅲ)effux *** exposed to 0.6 mg/L As(V),As(V)in the medium was completely converted to As(Ⅲ)by *** ARS1 within 4 *** sequencing showed that *** ARS1 has two chromosomal arsenic resistance gene clusters(arsRCBH)that contribute to efficient As(V)reduction and As(Ⅲ)effux,and result in high resistance to *** globosa is a strong arsenic accumulator with high potential for arsenic phytoremediation,which takes up As(Ⅲ)more efficiently than As(V).Co-culture of *** ARS1 and *** enhanced arsenic accumulation in *** by 69%,and resulted in 91%removal of arsenic(at initial concentration of 0.6 mg/L As(V))from water within 3 *** study provides a promising strategy for in situ arsenic phytoremediation through the cooperation of plant and endophytic bacterium.

关键词： Arsenic Pseudomonas putida Arsenate reduction Endophyte Wolffia globosa Phytoremediation

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Prevention and control strategies for antibiotic resistance:from species to community level

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Soil Ecology Letters 2024年第3期6卷 17-34页

作者： Yan-Zi Wang Hu Li Qing-Lin Chen Ting Pan yong-guan Zhu Dirk Springael Jian-Qiang Su Key Laboratory of Urban Environment and Health Ningbo Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Division of Soil and Water Management KU LeuvenKasteelpark Arenberg 20 Box 24593001 HeverleeBelgium

Antibiotic resistance genes(ARGs)and antibiotic resistant bacteria(ARB)in the environment pose serious threats to environmental security and public *** is an urgent need for methods to specifically and effectively control environmental pollution or pathogen infection associated with ARGs and *** review aims to provide an overview of methods abating the prevalence and spread of ARGs and ARB from species to community *** the species level,species-specific technologies,such as nanoparticle-,photosensitizer-,CRISPR-Cas-,and phage-related technology can be utilized to clear a particular class of ARGs or ARB,and in combination with low-dose antibiotics,a higher removal efficiency can be ***,the combination of antibiotics can be used to reverse microbial resistance and treat recurrent antibiotic resistant pathogen *** the community level,community-specific strategies,such as biochar,hyperthermophilic compost,and fecal microbiota transplantation can eradicate most types of ARGs or ARB in one shot,reducing the probability of resistance *** some progress has been made to eliminate ARGs and ARB in disease treatment or decontamination scenarios,further research is still needed to elucidate their mechanisms of action and scopes of application,and efforts should be made to explore novel strategies to counter the prevalence of antibiotic resistance.

关键词： antibiotic resistance genes antibiotic resistant bacteria treatment strategy disinfection

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Beyond microbial carbon use efficiency

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National Science Review 2024年第04期11卷 33-35页

作者： Ke-Qing Xiao Chao Liang Zimeng Wang Jingjing Peng Yao Zhao Ming Zhang Mingyu Zhao Shuiqing Chen yong-guan Zhu Caroline L.Peacock State Key Lab of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sciences University of Chinese Academy of Sciences Institute of Applied Ecology Chinese Academy of Sciences Department of Environmental Science and Engineering Fudan University College of Resources and Environmental Sciences China Agricultural University State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences State Key Laboratory of Agricultural Microbiology College of Resources and Environment Huazhong Agricultural University Key Laboratory of Cenozoic Geology and Environment Institute of Geology and Geophysics Chinese Academy of Sciences School of Earth and Environment University of Leeds

Microbial carbon use efficiency (CUE)is defined as the proportion of microbial biomass growth C versus substrate C uptake, and thus provides a useful measure of microbially driven accumulation and loss of soil organic carbon (SOC)[1]. In a recent study published in Nature [2],the authors used a data-driven machinelearning approach to conclude that CUE promotes global SOC storage based on a positive correlation between CUE and SOC content and that, based on sensitivity analysis, CUE is at least four times as important as six other evaluated factors,namely plant C inputs, C input allocation, non-microbial C transfer, substrate decomposability, environmental modifications and vertical transport.

关键词： SOIL-CARBON ORGANIC-MATTER

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