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Comparative study on the gut microbiotas of four economically important Asian carp species

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Science China(Life Sciences) 2018年第6期61卷 696-705页

作者： Xinghao Li Yuhe Yu Chang Li qingyun yan Laboratory of Protozoology Institute of Evolution and Marine Biodiversity OUC Qingdao 266003 China Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences and State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of Sciences Wuhan 430072 China Environmental Microbiomics Research Center School of Environmental Science and Engineering Sun Yat-sen University Guangzhou 510006 China

Gut microbiota of four economically important Asian carp species(silver carp, Hypophthalmichthys molitrix; bighead carp,Hypophthalmichthys nobilis; grass carp, Ctenopharyngodon idella; common carp, Cyprinus carpio) were compared using 16 S rRNA gene pyrosequencing. Analysis of more than 590,000 quality-filtered sequences obtained from the foregut, midgut and hindgut of these four carp species revealed high microbial diversity among the samples. The foregut samples of grass carp exhibited more than 1,600 operational taxonomy units(OTUs) and the highest alpha-diversity index, followed by the silver carp foregut and midgut. Proteobacteria, Firmicutes, Bacteroidetes and Fusobacteria were the predominant phyla regardless of fish species or gut type. Pairwise(weighted) UniFrac distance-based permutational multivariate analysis of variance with fish species as a factor produced significant association(P<0.01). The gut microbiotas of all four carp species harbored saccharolytic or proteolytic microbes, likely in response to the differences in their feeding habits. In addition, extensive variations were also observed even within the same fish species. Our results indicate that the gut microbiotas of Asian carp depend on the exact species, even when the different species were cohabiting in the same environment. This study provides some new insights into developing commercial fish feeds and improving existing aquaculture strategies.

关键词： Asian carp gut microbiota feeding habit pyrosequencing Hypophthalmichthys molitrix Hypophthalmichthys nobilis Ctenopharyngodon idella Cyprinus carpio

Research on Condenser Deterioration Evolution Trend Based on ANP-EWM Fusion Health Degree

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 679-698页

作者： Hong Qian Haixin Wang Guangji Wang qingyun yan College of Automation Engineering Shanghai University of Electric PowerShanghai200090China Shanghai Key Laboratory of Power Station Automation Technology Shanghai200072China Empower Information Technology(Shanghai)Co. Ltd.Shanghai201508China China Nuclear Power Engineering Design Co. Ltd.Shenzhen518052China

This study presents a proposed method for assessing the condition and predicting the future status of condensers operating in seawater over an extended *** aim is to address the problems of scaling and corrosion,which lead to increased loss of cold *** method involves utilising a set of multivariate feature parameters associated with the condenser as input for evaluation and trend *** methodology offers a precise means of determining the optimal timing for condenser cleaning,with the ultimate goal of improving its overall *** proposed approach involves the integration of the analytic network process with subjective expert experience and the entropy weightmethod with objective big data analysis to develop a fusion health *** mathematical model is constructed quantitatively using the improved Mahalanobis ***,a comprehensive prediction model is developed by integrating the improved Informer model and Markov error *** model takes into account the health status of the equipment and several influencing factors,includingmultivariate feature *** model facilitates the objective examination and prediction of the progression of equipment deterioration *** present study involves the computation and verification of the field time series data,which serves to demonstrate the accuracy of the condenser health-related models proposed in this *** models effectively depict the real condition and temporal variations of the equipment,thus offering a valuable method for determining the precise cleaning time required for the condenser.

关键词： Condenser health degree improved Mahalanobis distance GC-Informer model Markov error correction

Variability of Sea Ice from 2008 to 2019 in the Bohai and Northern Huanghai Sea, China and the Relationship with Climatic Factors

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Journal of Ocean University of China 2022年第5期21卷 1189-1197页

作者： GONG Shaoqi CHEN Wenqian ZHANG Cunjie yan qingyun yanG Hong School of Remote Sensing and Geomatics Engineering Nanjing University of Information Science and TechnologyNanjing 210044China National Climate Center China Meteorological AdministrationBeijing 100081China Department of Geography and Environment Science University of ReadingReading RG66ABUK

Sea ice has important effect on the marine ecosystem and people living in the surrounding regions in ***,the understanding on changes of sea ice in the Bohai and northern Huanghai Sea(BNHS),China is still *** on the images from Visible and InfraRed Radiometer(VIRR)onboard Chinese second generation polar-orbit meteorological series satellites FY-3A/B/C,the sea ice areas in the BNHS were extracted from December 2008 to March 2019,the spatio-temporal distribution charac-teristics of sea ice and the relationship between sea ice area and climatic factors were analyzed,then a preliminary sea ice forecast model based on the climatic factors was *** results showed that sea ice area in the BNHS in each December was relatively small and rather high sea ice occurrence probability appeared in the offshore areas in Liaodong Bay and northern Huanghai *** sea ice area in January or February each year was the largest,and sea ice occurred in most of areas in Liaodong Bay and northern Huanghai Sea with rather high probability and in some areas in Bohai Bay and Laizhou Bay with relatively high ***-ever,the sea ice area in each March was the smallest,and sea ice was even melted completely occasionally,hence with relatively low occurrence probability in Liaodong *** for the inter-annual variability of sea ice in the BNHS during the research period,the sea ice area was largest in winter 2010/11 and smallest in winter 2014/15,and annual sea ice area presented a decreasing *** at-mospheric temperature,western Pacific subtropical high(WPSH),Asia polar vortex(APV),Asian monsoon circulation(AMC)and Eurasian monsoon circulation(EMC)were very important climatic factors for sea ice formation and they had significant correlations with sea ice ***,a preliminary sea ice forecast model was constructed by using eight climatic factors including western Pacific subtropical high area index(WPSHAI),western Pacific subtropical high intensi

关键词： sea ice polar-orbit meteorological series satellites FY-3/VIRR Bohai Sea climatic factors

Exercise-based rehabilitation programmes for pulmonary hypertension:a systematic review and meta-analysis of randomized controlled trails

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中国循环杂志 2018年第S1期33卷 167-168页

作者： Lu yan qingyun yan Zhihong Liu Pulmonary Vascular Disease Center National Center for Cardiovascular DiseasesFuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Objective Individuals with pulmonary hypertension(PH)have reduced exercise capacity and quality of ***-based rehabilitation may have beneficial effects to improve the exercise capacity and quality of life in patients with *** aim to assess the efficacy and safety of exercised-based rehabilitation for people eith PH by performing a randomized controlled trails(RCTs)meta-analysis of exercised-based rehabilitation for people with PH by performing a randomized controlled trails meta-analysis.

关键词： pulmonary hypertension randomized controlled trails trails meta-analysis

Genome-resolved metagenomic analysis reveals different functional potentials of multiple Candidatus Brocadia species in a full-scale swine wastewater treatment system

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Frontiers of Environmental Science & Engineering 2023年第1期17卷 13-25页

作者： Yabing Meng Depeng Wang Zhong Yu qingyun yan Zhili He Fangang Meng School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production Changsha 410125China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China

The increasing application of anammox processes suggests their enormous potential for nitrogen removal in wastewater treatment ***,the functional potentials and ecological differentiation of cooccurring anammox species in complex ecosystems have not been well ***,by utilizing functional reconstruction and comparative genome analysis,we deciphered the cooccurring mechanisms of four Candidatus Brocadia species that were spontaneously enriched in a full-scale swine wastewater treatment *** analysis indicated that species SW172 and SW745 were closely related to *** caroliniensis and *** sapporoensis,respectively,whereas the dominant species SW510 and SW773,with a total average abundance of 34.1%,were classified as novel species of the genus *** reconstruction revealed that the novel species SW510 can encode both cytochrome cd1-type nitrite reductase and hydroxylamine oxidase for nitrite *** contrast,the detected respiratory pentaheme cytochrome c nitrite reductase and acetate kinase genes suggested that SW773 likely reduced nitrite to ammonium with acetate as a carbon ***,the presence of genes encoding urease and cyanase indicated that both novel species can use diverse organic nitrogen compounds in addition to ammonia and nitrite as *** together,the recovery and comparative analysis of these anammox genomes expand our understanding of the functional differentiation and cooccurrence of the genus *** in wastewater treatment systems.

关键词： Anammox Candidatus Brocadia Functional potential Cooccurring mechanisms Swine wastewater treatment facilities

Plankton community composition in the Three Gorges Reservoir Region revealed by PCR-DGGE and its relationships with environmental factors

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Journal of Environmental Sciences 2008年第6期20卷 732-738页

作者： yan qingyun YU Yuhe FENG Weisong YU Zhigang CHEN Hongtao Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China Ocean University of China Qingdao 266003 China

To explore the relationships between community composition and the environment in a reservoir ecosystem, plankton communities from the Three Gorges Reservoir Region were studied by PCR-denaturing gradient gel electrophoresis fingerprinting. Bacterial and eukaryotic operational taxonomic units （OTUs）, generated by DGGE analysis of the PCR-amplified 16S and 18S rRNA genes, were used as surrogates for the dominant ＂biodiversity units＂. OTU composition among the sites was heterogeneous; 46.7% of the total bacterial OTUs （45） and 64.1% of the eukaryotic OTUs （39） were identified in less than half of the sampling sites. Unweighted pair group method with arithmetic averages （UPGMA） clustering of the OTUs suggested that the plankton communities in the Xiangxi Rive sites were not always significantly different from those from the yangtze River sites, despite clear differences in their environmental characterizations. Canonical correspondence analysis （CCA） was applied to further investigate the relationships between OTU composition and the environmental factors. The first two CCA ordination axes suggested that the bacterial community composition was primarily correlated with the variables of NO3^--N, dissolved oxygen （DO）, and SiO3^2--Si, whereas, the eukaryotic community was mainly correlated with the concentrations of DO, PO4^3--P, and SiO3^2--Si.

关键词： plankton community environmental factors denaturing gradient gel electrophoresis (DGGE) spatial pattern Three Gorges Reservoir Region

Defect electrons accelerate iron cycle of novel Fe-based Fenton:Long-term effective quinoline degradation

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Chinese Chemical Letters 2023年第6期34卷 598-605页

作者： Weikang Hu Ming yang qingyun yan Jiahui Ji yan Bao Jinlong Zhang Mingyang Xing Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China

Heterogeneous Fenton has been widely used in the disposal of organic pollutants,however,slow regeneration of≡Fe(II)remains limitation for its practical application of long-term ***,we come up with a novel Fe-based heterogeneous Fenton catalyst named as FeS_(x)O_(y)-X(X is the ratio of ethylene glycol to N,N-dimethylformamide).With the help of the abundant defect electrons in Sulfur vacancies,≡Fe(Ⅱ)regeneration on the surface of FeS_(x)O_(y)-1:1 was accelerated,resulting in a stable proportion of≡Fe(Ⅱ)on the surface,which maintained continuously stable generation of hydroxyl radical(·OH)and singlet oxygen(^(1)O_(2)).Thus,without any organic reagents or cocatalysts,FeS_(x)O_(y)-1:1 based Fenton system achieved effective long-term degradation of 560 mg/L quinoline within only 7 days,which was evidently better than reported Fe S and SV-Fe S_(2)(SV:Sulfur vacancy).The system had excellent adaptability to water quality and the COD removal rate of biochemical wastewater was as high as 79.8%.

关键词： Fenton reaction Quinoline Defect electron Iron cycle Heterogeneous catalyst

Graphene-Based Photo-Fenton Catalysts for Pollutant Control

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Transactions of Tianjin University 2021年第2期27卷 110-126页

作者： yan Bao qingyun yan Jiahui Ji Bocheng Qiu Jinlong Zhang Mingyang Xing Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Jiangsu Key Laboratory of Pesticide Sciences Department of ChemistryCollege of SciencesNanjing Agricultural UniversityNanjing 210095China

Water pollution is a global environmental issue with multi-dimensional infl uences on human *** strategies,such as photo-Fenton reaction,have been employed to remove recalcitrant ***-dimensional(2D)graphene and its threedimensional(3D)confi gurations have attracted considerable attention as emerging carbon-based catalysts in photo-Fenton fi elds owing to their alluring properties in electron transfer,reactant adsorption,and light *** review summarizes the recent developments in 2D and 3D graphene-based catalysts for photo-Fenton *** structures,characteristics,activity,and mechanisms are *** conclusions and outlooks are proposed for the profound understanding of challenges and future directions.

关键词： Photo-Fenton Graphene Pollutant control Aerogel Hydrogel

Responses of ammonia-oxidizing microorganisms to biochar and compost amendments of heavy metals-polluted soil

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Journal of Environmental Sciences 2021年第4期33卷 263-272页

作者： Mingyue Li Jiachao Zhang Xiao yang Yaoyu Zhou Lihua Zhang Yuan yang Lin Luo qingyun yan College of Resources and Environment Hunan Agricultural UniversityChangsha 410128China Environmental Microbiomics Research Center School of Environmental Science and EngineeringSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yat-sen UniversityGuangzhou 510006China Korea Biochar Research Center O-Jeong Eco-Resilience Institute(OJERI)&Division of Environmental Science and Ecological EngineeringKorea UniversitySeoul 02841Republic of Korea

Heavy metal pollution affects soil ecological *** and compost can effectively remediate heavy metals and increase soil *** effects and mechanisms of biochar and compost amendments on soil nitrogen cycle function in heavy-metal contaminated soils are not fully *** study examined how biochar,compost,and their integrated use affected ammonia-oxidizing microorganisms in heavy metal polluted *** PCR was used to determine the abundance of ammonia-oxidizing archaea(AOA)and bacteria(AOB).Ammonia monooxygenase(AMO)activity was evaluated by the enzymelinked immunosorbent *** showed that compost rather than biochar improved nitrogen conversion in ***,compost,or their integrated application significantly reduced the effective Zn and Cd *** compost obviously increased As and Cu effective speciation,bacterial 16 S rRNA abundance,and AMO ***,stimulated by compost addition,was significantly more abundant than AOA throughout *** analysis showed that AOB abundance positively correlated with NO_(3)^(-)-N(r=0.830,P<0.01),and that AMO activity had significant correlation with EC(r=-0.908,P<0.01)and water-soluble carbon(r=-0.868,P<0.01).Those seem to be the most vital factors affecting AOB community and their function in heavy metal-polluted soil remediated by biochar and compost.

关键词： Biochar Compost Heavy metal Ammonia-oxidizing community Ammonia monooxygenase activity