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  • 1
    Electronic Resource
    Electronic Resource
    Population study of atmospheric bacteria at the Fengtai district of Beijing on two representative days (1993)
    Springer
    Aerobiologia 9 (1993), S. 69-74 
    Details
    ISSN: 1573-3025
    Keywords: atmospheric bacteria ; identification ; population distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We collected bacteria from the atmosphere (5–6 m above ground level) with an Andersen microbial sampler at Fengtai District, Beijing, in the spring and autumn of 1989. The 195 strains of bacteria collected and isolated were identified according to their morphological, biochemical and physiological characteristics. The results showed that there were 11 bacterial genera in the atmosphere of the town, the most abundant beingStaphylococcus andBacillus. The order of prevailing genera of the two seasons is similar. In morphology, gram positive (G+) bacteria predominate among atmospheric bacteria (G+ cocci, G+ rods and G+ endospore-forming rods). It seems that the constitution of atmospheric bacteria is influenced not only by the source strength of the various bacteria in the environment, but also by their somewhat resistant mechanisms such as protective pigments and spore structure. From our experience, in order to avoid the possible data loss from selecting and identifying some «representative» colonies of samples, all strains isolated should be identified when studying ecological distribution of microbes in the atmosphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02311372
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Factors of influence on microbial pollution in the atmosphere over Beijing area (1991)
    Springer
    Aerobiologia 7 (1991), S. 136-143 
    Details
    ISSN: 1573-3025
    Keywords: factors of influence ; microbial pollution in the atmosphere ; microbiological aerosol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The atmospheric microbial pollutants are potentially correlated to population density and activity as well as to human health. The higher the population density is, the heavier the air microbial pollution will become. Some meteorological factors exert great influence on air microbial pollution. Generally, wind, solar radiation and rainfalls purify air and, consequently cause a decrease in atmospheric microbial pollution. On the other hand, prevailing strong winds may favour this pollution, especially in dry conditions and in absence of vegetation. Obviously, relatively high temperatures associated with high RH enhance the growing of microbes. However, the higher the temperature is, the lower the viability of airborne microbes will be; nonetheless, with high RH a decrease in suspended particles may be recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02270682
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Particle diameter of the airborne microorganisms over Beijing and Tianjin area (1992)
    Springer
    Aerobiologia 8 (1992), S. 297-300 
    Details
    ISSN: 1573-3025
    Keywords: aerosol ; airborne microbes ; particle size
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary This study was aimed at the detection of the Count Medium Diameter (CMD) of airborne bacterial and fungal particles with the Andersen's six-stage viable air-sampler at four sites over Beijing and Tianjin area. The results were as follows: in the first period (1984–1985) the CMDs annual average were 5.6, 6.6, 5.5, 7.1 µm at Xi-Dan, Feng-Tai, Tang-Gu and Huai-Rou respectively. The CMDs annual average of the airborne fungal particles were 3.9 µm at Feng-Tai and Xi-Dan. In the second period (1987–1988), the CMD annual average of airborne bacteria was 7.3, that of airborne fungi was 3.9 µm at Xi-Dan. At Huai-Rou, the CMD of airborne-bacteria was 7.1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02071638
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    Paper (German National Licenses)
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