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The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

《环境科学与工程前沿（英文）》 2021年 第15卷 第3期 doi: 10.1007/s11783-020-1356-4

摘要：

•Bacterial concentrations from eight stages were 104–105copies/m3.

关键词： Size distribution     Airborne bacteria     Biological diversity     Human pathogenic bacteria     Composting plants    

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Airborne bacteria associated with particulate matter from a highly urbanised metropolis: A potential

《环境科学与工程前沿（英文）》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1552-5

摘要：

• The airborne bacteria of Mexico City are representative of urban environments.

关键词： Airborne bacteria     Urbanisation     PM10     Mexico City     Microbiome    

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Effects of heavy rainfall on the composition of airborne bacterial communities

Gwang Il Jang, Chung Yeon Hwang, Byung Cheol Cho

《环境科学与工程前沿（英文）》 2018年 第12卷 第2期 doi: 10.1007/s11783-018-1008-0

摘要： Wet deposition scavenges particles and particle-associated bacteria from the air column, but the impact of raindrops on various surfaces on Earth causes emission of surface-associated bacteria into the air column. Thus, after rainfall, these two mechanisms are expected to cause changes in airborne bacterial community composition (BCC). In this study, aerosol samples were collected at a suburban site in Seoul, Korea before and after three heavy rainfall events in April, May, and July 2011. BCC was investigated by pyrosequencing the 16S rRNA gene in aerosol samples. Interestingly, the relative abundance of non-spore forming operational taxonomic units (OTUs) was always higher in post-rain aerosol samples. In particular, the absolute and relative abundances of airborne always increased after rainfall, whereas those of airborne , including and , consistently decreased. Marine bacterial sequences, which were temporally important in aerosol samples, also decreased after rainfall events. Further, increases in pathogen-like sequences were often observed in post-rain air samples. Rainfall events seemed to affect airborne BCCs by the combined action of the two mechanisms, with potentially adverse effects on human and plant health.

关键词： Aerosol     Bacteria     Community composition     Pyrosequencing     Rain    

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Erratum to: Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

《环境科学与工程前沿（英文）》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1289-y

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Advances in airborne microorganisms detection using biosensors: A critical review

《环境科学与工程前沿（英文）》 2021年 第15卷 第3期 doi: 10.1007/s11783-021-1420-8

摘要：

Humanity has been facing the threat of a variety of infectious diseases. Airborne microorganisms can cause airborne infectious diseases, which spread rapidly and extensively, causing huge losses to human society on a global scale. In recent years, the detection technology for airborne microorganisms has developed rapidly; it can be roughly divided into biochemical, immune, and molecular technologies.

关键词： Biosensor     Airborne microorganisms     Microbiological detection technology    

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Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

《环境科学与工程前沿（英文）》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1274-5

摘要： Abstract • Sampling parameters with high efficiency was determined. • Operational process to detect airborne ARGs was optimized. • Providing research basis to control airborne ARGs of a laboratory atmosphere Antibiotic resistance genes (ARGs) have been detected in various atmospheric environments. Airborne ARGs transmission presents the public health threat. However, it is very difficult to quantify airborne ARGs because of the limited availability of collectable airborne particulate matter and the low biological content of samples. In this study, an optimized protocol for collecting and detecting airborne ARGs was presented. Experimental results showed that recovery efficiency tended to increase initially and then declined over time, and a range of 550–780 copies/mm2 of capture loading was recommended to ensure that the recovery efficiency is greater than 75%. As the cell walls were mechanically disrupted and nucleic acids were released, the buffer wash protects ARGs dissolution. Three ratios of buffer volume to membrane area in buffer wash were compared. The highest concentrations of airborne ARGs were detected with 1.4 µL/mm2 buffer wash. Furthermore, the majority of the cells were disrupted by an ultrasonication pretreatment (5 min), allowing the efficiency ARGs detection of airborne samples. While, extending the ultrasonication can disrupt cell structures and gene sequence was broken down into fragments. Therefore, this study could provide a theoretical basis for the efficient filter collection of airborne ARGs in different environments. An optimized sampling method was proposed that the buffer wash was 1.4 µL/mm2 and the ultrasonication duration was 5 min. The indoor airborne ARGs were examined in accordance with the improved protocol in two laboratories. The result demonstrated that airborne ARGs in an indoor laboratory atmosphere could pose the considerable health risk to inhabitants and we should pay attention to some complicated indoor air environment.

关键词： Airborne tetracycline resistance genes     Filter sampling     Capture loading     Membrane pretreatment     Indoor laboratory atmosphere    

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高空风能蓄势待发

Peter Weiss

《工程（英文）》 2020年 第6卷 第2期   页码 107-109 doi: 10.1016/j.eng.2019.12.002

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Electroactivity of the magnetotactic bacteria AMB-1 and MSR-1

《环境科学与工程前沿（英文）》 2023年 第18卷 第4期 doi: 10.1007/s11783-024-1808-3

摘要：

● The first study of electrochemically active magnetotactic bacteria.

关键词： Magnetotactic bacteria     Magnetospirillum magneticum     Magnetospirillum gryphiswaldense     Extracellular electron transfer     Microbial fuel cells    

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Erratum to “After Highflyer Crashes, Airborne Wind Energy Regroups” [Engineering 7 (2021) 277–279]

Peter Weiss

《工程（英文）》 2021年 第7卷 第10期   页码 1506-1506 doi: 10.1016/j.eng.2021.08.004

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A CFD study of the transport and fate of airborne droplets in a ventilated office: The role of droplet

《环境科学与工程前沿（英文）》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1465-8

摘要：

• Coulomb and Lennard−Jones forces were considered for droplet interactions.

关键词： Droplet interactions     Aerosols     Colloids     CFD     Transport     Fate    

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Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

《环境科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 173-184 doi: 10.1007/s11783-013-0494-3

摘要： Phosphorus (P) is a vital nutrient for sustaining natural water productivity. Both particulate and dissolved forms of organic and inorganic P are potentially important sources of bioavailable P for primary and secondary producers. A microcosm system to imitate the bacterial community in Plym river sediment and pore water is described and bacterial uptake rates for inorganic and organic phosphorus are presented in this paper. The aim of this study was to investigate the uptake of two organic phosphorus compounds (phytic acid and D-glucose-6-phosphate) by freshwater bacteria. The bioreactors comprise glass columns packed with two types of small glass beads on which bacterial biofilm can develop. The glass beads with different porosity were introduced to simulate River SPM. The selected P compounds spiked into the inflow of the microcosm, and measured the step change of P concentration in the outflow to investigate the behavior of bacterial uptake of nutrients. The results showed that organic phosphorus was converted into inorganic phosphorus but the conversion rate depended on the type of phosphorus species. One experiment suggested that phytic acid (refractory) could displace phosphate from the biofilm surface; the other experiment showed that D-glucose-6-phosphate (labile) could be hydrolysed and utilized easily by the bacteria. The results also suggested that bacteria might break down the C-P bonds to utilize the carbon. Further experiments should investigate the effect of varying the C:N:P ratio in the microcosm system to determine which nutrient limits bacteria uptake.

关键词： organic phosphorus     bacteria     uptake    

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基于SINS/GNSS的航空矢量重力测量数据处理方法研究

宁津生

《中国工程科学》 2014年 第16卷 第3期   页码 4-13

摘要：

航空矢量重力测量是未来高效测定中高频地球重力场信息的先进技术，与地面重力测量、海洋重力测量和卫星重力测量技术相互补充。本文介绍了基于捷联惯性导航系统/全球卫星导航系统（SINS/GNSS）的航空矢量重力测量的原理，重点讨论了航空矢量重力测量的数据预处理、数据归算、带限地形影 响、向下延拓及大地水准面确定等问题，为发展我国航空矢量重力测量技术提供参考。

关键词： 航空矢量重力测量     SINS/GNSS数据融合     地球重力场     大地水准面    

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Visible light induces bacteria to produce superoxide for manganese oxidation

《环境科学与工程前沿（英文）》 2023年 第17卷 第2期 doi: 10.1007/s11783-023-1619-y

摘要：

● Term of manganese-oxidizing microorganisms should be reconsidered.

关键词： Mn(II) oxidation     Manganese-oxidizing bacteria     Reactive oxygen species     Mn(III/IV) oxides    

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Synergistic degradation of pyrene and volatilization of arsenic by cocultures of bacteria and a fungus

Shuang LIU, Yanwei HOU, Guoxin SUN

《环境科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 191-199 doi: 10.1007/s11783-012-0470-3

摘要： The combination of two bacteria ( sp. PY1 and sp. PY2) and a fungus ( sp. PY3), isolated from contaminated soils near a coking plant, were investigated with respect to their capability to degrade pyrene and volatilize arsenic. The results showed that all strains could use pyrene and arsenic as carbon and energy sources in a basal salts medium (BSM), with the combined potential to degrade pyrene and volatilize arsenic. sp. PY1, sp. PY2 and sp. PY3 were isolated from the consortium and were shown to degrade pyrene and volatilize arsenic independently and in combination. Fungal-bacterial coculture has shown that the most effective removal of pyrene was 96.0% and volatilized arsenic was 84.1% after incubation in liquid medium after 9 days culture, while bioremediation ability was 87.2% in contaminated soil with 100 mg·kg pyrene. The highest level of arsenic volatilization amounted to 13.9% of the initial As concentration in contaminated soil after 63 days. Therefore, a synergistic degradation system is the most effective approach to degrade pyrene and remove arsenic in contaminated soil. These findings highlight the role of these strains in the bioremediation of environments contaminated with pyrene and arsenic.

关键词： pyrene     arsenic     bioremediation     bacteria     fungus    

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Nitrifying and denitrifying bacteria in aerobic granules formed in sequencing batch airlift reactors

WANG Fang, YANG Fenglin, QI Aijiu

《环境科学与工程前沿（英文）》 2007年 第1卷 第2期   页码 184-189 doi: 10.1007/s11783-007-0032-2

摘要： The purpose of this study was to investigate nitrifying bacteria and denitrifying bacteria isolated from aerobic granules. Aerobic granules were formed in an internal-circulate sequencing batch airlift reactor (SBAR) and biodegradation of NH3--N was analyzed in the reactor. Bacteria were isolated and determined from aerobic granules using selected media. The growth properties and morphology of bacteria colonies were observed by controlling aerobic or anaerobic conditions in the culture medium. It was found that bacteria in aerobic granules were diverse and some of them were facultative aerobes. The diversity of bacteria in aerobic granules was a premise of simultaneous nitrification and denitrification.
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标题 作者 时间 类型 操作

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

期刊论文

Airborne bacteria associated with particulate matter from a highly urbanised metropolis: A potential

期刊论文

Effects of heavy rainfall on the composition of airborne bacterial communities

Gwang Il Jang, Chung Yeon Hwang, Byung Cheol Cho

期刊论文

Erratum to: Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

期刊论文

Advances in airborne microorganisms detection using biosensors: A critical review

期刊论文

Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

期刊论文

高空风能蓄势待发

Peter Weiss

期刊论文

Electroactivity of the magnetotactic bacteria AMB-1 and MSR-1

期刊论文

Erratum to “After Highflyer Crashes, Airborne Wind Energy Regroups” [Engineering 7 (2021) 277–279]

Peter Weiss

期刊论文

A CFD study of the transport and fate of airborne droplets in a ventilated office: The role of droplet

期刊论文

Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

期刊论文

基于SINS/GNSS的航空矢量重力测量数据处理方法研究

宁津生

期刊论文

Visible light induces bacteria to produce superoxide for manganese oxidation

期刊论文

Synergistic degradation of pyrene and volatilization of arsenic by cocultures of bacteria and a fungus

Shuang LIU, Yanwei HOU, Guoxin SUN

期刊论文

Nitrifying and denitrifying bacteria in aerobic granules formed in sequencing batch airlift reactors

WANG Fang, YANG Fenglin, QI Aijiu

期刊论文