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Distinct community assembly processes underlie significant spatiotemporal dynamics of abundant and rare

《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1513-4

摘要:

• Season and landform influenced spatiotemporal patterns of abundant and rare taxa.

关键词: Rare taxa     Biogeography     Community assembly     Bacterioplankton     The Yangtze River    

Community dynamics of ammonia oxidizing bacteria in a full-scale wastewater treatment system with nitrification

Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU

《环境科学与工程前沿(英文)》 2011年 第5卷 第1期   页码 92-98 doi: 10.1007/s11783-010-0254-6

摘要: To determine whether the functional stability of nitrification was correlated to a stable community structure of ammonia oxidizing bacteria (AOB) in a full-scale wastewater treatment plant, the AOB community dynamics in a wastewater treatment system was monitored over one year. The community dynamics were investigated using specific PCR followed by terminal restriction fragment length polymorphism (T-RFLP) analysis of the gene. The T-RFLP results indicated that during the period of nitrification stability, the AOB community structure in the full-scale wastewater treatment system was relatively stable, and the average change rate every 15 d of the system was 6.6%±5.8%. The phylogenetic analysis of the cloned gene showed clearly that the dominant AOB in the system was spp. The results of this study indicated that throughout the study period, the AOB community structure was relatively stable in the full-scale wastewater treatment system with functional stability of nitrification.

关键词: ammonia-oxidizing bacteria (AOB)     community dynamics     terminal restriction fragment length polymorphism (T-RFLP)     nitrification performance    

Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

《环境科学与工程前沿(英文)》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1045-8

摘要:

High strength sugar refinery wastewater was treated in a mesophilic UASB.

Pyrosequencing reveals microbial community succession with OLR increase.

Diversity of microbial communities in OLR12 is much higher than those in OLR36 and OLR54.0 kgCOD/(kg VSS·d).

Fermentative bacteria could deal with increasing OLR through the increase of microbial diversity and quantity.

Hydrogen-producing acotogens and methanogens mainly coped with high OLR shocks by increasing the quantity of community

关键词: Upflow anaerobic sludge blanket     Sugar refinery wastewater     Organic loading rate     Pyrosequencing     Microbial community structure    

Microbial community structure and dynamics of starch-fed and glucose-fed chemostats during two years

Min GOU,Jing ZENG,Huizhong WANG,Yueqin TANG,Toru SHIGEMATSU,Shigeru MORIMURA,Kenji KIDA

《环境科学与工程前沿(英文)》 2016年 第10卷 第2期   页码 368-380 doi: 10.1007/s11783-015-0815-9

摘要: The microbial community structures of two mesophilic anaerobic chemostats, one fed with glucose, the other with starch as sole carbon sources, were studied at various dilution rates (0.05–0.25 d for glucose and 0.025–0.1 d for starch) during two years continuous operation. In the glucose-fed chemostat, the aceticlastic methanogen spp. and hydrogenotrophic methanogen spp. predominated at low dilution rates, whereas spp. and the hydrogenotrophic spp. predominated together when dilution rates were greater than 0.1 d . Bacteria affiliated with the phyla Bacteroidetes, Spirochaetes, and Actinobacteria predominated at dilution rates of 0.05, 0.1, and 0.15 d , respectively, while Firmicutes predominated at higher dilution rates (0.2 and 0.25 d ). In the starch-fed chemostat, the aceticlastic and hydrogenotrophic methanogens coexisted at all dilution rates. Although bacteria belonging to only two phyla were mainly responsible for starch degradation (Spirochaetes at the dilution rate of 0.08 d and Firmicutes at other dilution rates), different bacterial genera were identified at different dilution rates. With the exception of Archaea in the glucose-fed chemostat, the band patterns revealed by denaturing gradient gel electrophoresis (DGGE) of the microbial communities in the two chemostats displayed marked changes during long-term operation at a constant dilution rate. The bacterial community changed with changes in the dilution rate, and was erratic during long-term operation in both glucose-fed and starch-fed chemostats.

关键词: microbial community     glucose degradation     starch degradation     dilution rate     continuous methane fermentation     phylogenetic analysis    

Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin: Dynamics

《环境科学与工程前沿(英文)》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1342-x

摘要:

• SMX addition had negative effect on acetoclastic methanogens in mesophilic AD.

关键词: Pig manure     Antibiotics     Anaerobic digestion     Resistance genes     Microbial community    

Fungal diversity and its mechanism of community shaping in the milieu of sanitary landfill

《环境科学与工程前沿(英文)》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1370-6

摘要:

Ascomycota was the predominant phylum in sanitary landfill fungal communities.

关键词: Sanitary landfill     Fungal community     Diversity     Saprotroph     Physical habitat     Environmental factor    

of different voltage application modes on biodegradation of chloramphenicol and shift of microbial community

《环境科学与工程前沿(英文)》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1576-x

摘要:

● Presented coupled system enhanced biodegradation of antibiotic chloramphenicol.

关键词: Electrical stimulation     Biodegradation     Microbial community     Chloramphenicol    

Attributes, challenges and future directions of community resilience

Bo MENG, Nan LI, Dongping FANG

《工程管理前沿(英文)》 2018年 第5卷 第3期   页码 307-323 doi: 10.15302/J-FEM-2018030

摘要:

With the continuous development of human society, the damage to the natural environment is becoming increasingly large, causing crisis events to occur frequently. In recent years, the study of community resilience is becoming popular among scholars because of its perspective on disaster prevention and mitigation. In this study, we apply database retrieval to untangle community resilience-related papers from multiple directions. We analyze the connotation, attribute, and composition of community, resilience, and community resilience comprehensively by summarizing important issues and research progress in community resilience. Challenges and shortcomings faced by community resilience development are also determined. Moreover, we put forward the research directions that future research can focus on. Through literature review, current research on community resilience focuses on the following aspects: “infrastructure construction,” “crowd in the community,” “economic resilience,” “social capital,” and “measurement of community resilience.” Such research is not yet systematic and relatively decentralized. The attention to collective resilience in the community is relatively weak, which makes achieving the goal of “people-oriented and systematic control” difficult. Therefore, this study states that the development of future community resilience should stand from the perspective of “system of system” and build on knowledge and tools of various relevant domains. Therefore, public needs and participation are highlighted as breakthrough points. The research should integrate infrastructure and economic resilience, social resource allocation, network connection, and other aspects to build a holistic and functional resilient community.

关键词: community resilience     literature analysis     resilience attribute     social resource     future direction    

The diazotrophic community in oat rhizosphere: effects of legume intercropping and crop growth stage

Yadong YANG, Xiaomin FENG, Yuegao HU, Zhaohai ZENG

《农业科学与工程前沿(英文)》 2019年 第6卷 第2期   页码 162-171 doi: 10.15302/J-FASE-2018212

摘要:

In this study, the abundance, diversity and structure of the diazotrophic community in oat rhizosphere soil in three cropping systems and at two oat growth stages were investigated using real-time PCR and Illumina MiSeq sequencing. The gene abundance in oat-soybean intercropping (OSO) and oat-mungbean intercropping (OMO) was significantly greater than that in sole oat (O), but the gene abundance significantly decreased at the later stage in all the treatments. Alpha diversity indices in OSO and OMO were higher at the heading stage, but lower at the maturity stage than that in O. and were the dominant genera identified in all samples, with an average proportion of 35.8% and 12.4%, respectively. The proportion of dominant genera showed significant differences and varied with cropping system and growth stage. Principal component analysis showed that growth stage had a stronger effect than intercropping on the diazotrophic community structure. However, Mantel test and redundancy analysis showed there was no environmental factor significantly correlated to the diazotrophic community structure. Our results demonstrate that intercropping had a weaker effect than growth stage on the abundance, diversity and structure of the diazotrophic community in oat rhizosphere soil.

关键词: community composition     Illumina MiSeq sequencing     nifH gene     oat-legume intercropping     rhizosphere soil    

Insights into the changes of amino acids, microbial community, and enzymatic activities related with

《环境科学与工程前沿(英文)》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1635-y

摘要:

● The highest seed germination index was achieved at 0.3 g/g total solids of food waste.

关键词: Composting     Food waste     Amino acids     Microbial community     Enzymatic activity     Nutrient quality    

Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

《环境科学与工程前沿(英文)》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1636-x

摘要:

● Environmental parameters affected functional bacteria and network associations.

关键词: Activated sludge     Bacterial community     Tank-dependence     Network association     Functional bacteria    

城乡社区治理标准体系构建研究

王艳芳,朱伟,白波

《中国工程科学》 2021年 第23卷 第3期   页码 32-39 doi: 10.15302/J-SSCAE-2021.03.013

摘要:

随着我国社会治理重心下沉,城乡社区逐渐成为社会治理的着力点,与此同时,现有城乡社区治理标准面临难以满足城乡社区治理现代化新需求的严峻挑战,亟需构建城乡社区治理标准体系。本文旨在开展城乡社区治理标准体系的发展战略研究,分析了当前我国城乡社区治理发展的标准化需求,梳理了国内外与城乡社区治理相关的标准体系发展现状,凝练了我国城乡社区治理标准化发展存在的问题,研究提出了我国城乡社区治理标准体系的初步架构方案及重点发展方向,涵盖总体、社区基础设施、社区信息化平台、社区自治、社区管理、社区服务6 个方面。结合新时代城乡社区治理重点和短板,本文从加强标准化顶层设计、开展试点示范、注重多方参与、坚持城乡统筹、加强人才培养5 个方面提出了对策建议。

关键词: 城乡社区     社区治理     标准体系     社区服务     社区信息化    

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

《环境科学与工程前沿(英文)》 2011年 第5卷 第3期   页码 362-377 doi: 10.1007/s11783-011-0365-8

摘要: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.e. the transport and deposition of particles in an aerosol, is reviewed. The review gives a brief account of the basics of aerosol mechanics, followed by a description of the general CFD approach for flow field simulation, turbulence modeling, wall treatments and simulation of particle motion and deposition. Then examples from the literature are presented, including CFD simulation of particle deposition in human respiratory tract and particle deposition in aerosol devices. CFD simulation of particle transport and deposition may provide information that is difficult to obtain through physical experiments, and it may help reduce the number of experiments needed for device design. Due to the difficulty of describing turbulent flow and particle-eddy interaction, turbulent dispersion of particles remains one of the greatest challenges for CFD simulation. However, it is possible to take a balanced approach toward quantitative description of aerosol dispersion using CFD simulation in conjunction with empirical relations.

关键词: computational fluid dynamics (CFD)     aerosol     transport     deposition    

The next step of community health construction: Training general practitioners and implementing health

Kan ZHANG MM, Wei DONG MM, Ying-Yao CHEN MD,

《医学前沿(英文)》 2010年 第4卷 第2期   页码 134-138 doi: 10.1007/s11684-010-0041-6

摘要: This article discusses the concept of health management and stresses that community health management should be the starting point of community health service, necessitating a paradigm shift from observing the treatment-oriented medical model to observing the prevention-and-health management-based medical model. Community health construction has entered a new phase, one which highlights the need to train general practitioners in practice-based life cycle health management. In addition, general practitioners should assume the mission of implementing community health management.

关键词: community health     general practitioners     health management    

Microbial community structure in different wastewater treatment processes characterized by single-strand

ZHAO Yangguo, WANG Aijie, REN Nanqi, ZHAO Yan

《环境科学与工程前沿(英文)》 2008年 第2卷 第1期   页码 116-121 doi: 10.1007/s11783-008-0018-8

摘要: In order to investigate microbial community structures in different wastewater treatment processes and understand the relationship between the structures and the status of processes, the microbial community diversity, variety and distribution in five wastewater treatment pro cesses were studied by a culture-independent genetic fingerprinting technique single-strand conformation polymorphism (SSCP). The five processes included denitrifying and phosphate-removal system (diminished N), Chinese traditional medicine wastewater treatment system (P), beer wastewater treatment system (W), fermentative biohydrogen-producing system (H), and sulfate-reduction system (S). The results indicated that the microbial community profiles in the wastewater bioreactors with the uniform status were very similar. The diversity of microbial populations was correlated with the complexity of organic contaminants in wastewater. Chinese traditional medicine wastewater contained more complex organic components; hence, the population diversity was higher than that of simple nutrient bioreactors fed with molasses wastewater. Compared with the strain bands in a simulated community, the relative proportion of some functional microbial populations in bioreactors was not dominant. Fermentative biohydrogen producer in the better condition bioreactor had only a 5% band density, and the sp. in the sulfate-reducing bioreactor had less than 1.5% band density. The SSCP profiles could identify the difference in microbial community structures in wastewater treatment processes, monitor some of the functional microbes in these processes, and consequently provide useful guidance for improving their efficiency.

关键词: technique single-strand     proportion     bioreactor     community diversity     fingerprinting technique    

标题 作者 时间 类型 操作

Distinct community assembly processes underlie significant spatiotemporal dynamics of abundant and rare

期刊论文

Community dynamics of ammonia oxidizing bacteria in a full-scale wastewater treatment system with nitrification

Xiaohui WANG, Xianghua WEN, Hengjing YAN, Kun DING, Man HU

期刊论文

Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

期刊论文

Microbial community structure and dynamics of starch-fed and glucose-fed chemostats during two years

Min GOU,Jing ZENG,Huizhong WANG,Yueqin TANG,Toru SHIGEMATSU,Shigeru MORIMURA,Kenji KIDA

期刊论文

Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin: Dynamics

期刊论文

Fungal diversity and its mechanism of community shaping in the milieu of sanitary landfill

期刊论文

of different voltage application modes on biodegradation of chloramphenicol and shift of microbial community

期刊论文

Attributes, challenges and future directions of community resilience

Bo MENG, Nan LI, Dongping FANG

期刊论文

The diazotrophic community in oat rhizosphere: effects of legume intercropping and crop growth stage

Yadong YANG, Xiaomin FENG, Yuegao HU, Zhaohai ZENG

期刊论文

Insights into the changes of amino acids, microbial community, and enzymatic activities related with

期刊论文

Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

期刊论文

城乡社区治理标准体系构建研究

王艳芳,朱伟,白波

期刊论文

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

期刊论文

The next step of community health construction: Training general practitioners and implementing health

Kan ZHANG MM, Wei DONG MM, Ying-Yao CHEN MD,

期刊论文

Microbial community structure in different wastewater treatment processes characterized by single-strand

ZHAO Yangguo, WANG Aijie, REN Nanqi, ZHAO Yan

期刊论文