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Wyświetlanie 1-3 z 3
Tytuł:
Czynniki mikrobiologiczne na pokładzie lekkich samolotów pasażerskich
Microbial Agents on Board of Light Passenger Aircrafts
Autorzy:
Stobnicka, A.
Górny, R.
Gołofit-Szymczak, M.
Cyprowski, M.
Ławniczek-Wałczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/1818069.pdf
Data publikacji:
2016
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
lekkie samoloty pasażerskie
zanieczyszczenie powietrza
bakterie
grzyby
bioaerozol
light passenger aircrafts
air contamination
bacteria
fungi
bioaerosol
Opis:
Light passenger aircrafts, also known as „air taxis”, are a fast and comfortable way of transport, which becomes more and more popular nowadays. However, there is a lack of publications regarding harmful biological agents in the cabin air of light passenger aircrafts. The aim of the study was a quantitative and qualitative evaluation of microbial contamination of cabin air in eight light passenger aircrafts with open cabin type and two helicopters. The bioaerosol sampling was carried out with a stationary, volumetric method using MAS-100 NT impactor. The concentration of microorganisms was expressed as CFU/m3.The highest concentration of bacteria was detected in the helicopter Robinson R44 Raven 2 I (175 CFU/3), while the highest concentration of fungi was detected in the plane model TB9 Socata Tampico (385 CFU/m3). Kruskal-Wallis test did not show any statistically significant difference in the concentration of microorganisms in the air between the tested aircrafts, and between them and the outside background.The predominant groups of microorganisms in bioaerosols were fungi and Gram-positive cocci, which constituted 31.1-83.0% and 5.6-62.2% of the total microbiota, respectively. Sixteen species of bacteria belonging to the 8 types and 14 species of fungi belonging to 13 genera were identified in the samples.The qualitative analysis showed the presence of bacterial and fungal saprophytic strains belonging to the 1. risk group, and species belonging to the 2. risk group (Bacillus subtilis, Streptomyces spp.). Taking into account the influence of temperature and relative humidity on the concentration of bacteria and fungi in the air, it was observed that the higher temperature determined the higher concentration of bacteria, but there was no such relationship concerning fungi. Relative humidity did not significantly determine the concentration of bioaerosols.Our results indicate that the concentrations of bacteria and fungi in the cabin air were very low. However, even such an environment cannot be considered as free from pathogens. As shown by the results, the bioaerosols in the cabin air of light passenger aircrafts may contain potentially pathogenic bacteria and fungi belonging to the 2. risk group. However, bioaerosols may contain potentially pathogenic bacteria and fungi belonging to the 2. risk group. Direct contact with the afore-mentioned microorganisms, especially in the case of people with weakened immunity systems, can cause adverse health effects, as well as allergic reactions.
Źródło:
Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 492-505
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occupational exposure to airborne microorganisms, endotoxins and beta-glucans in poultry houses at different stages of the production cycle
Autorzy:
Lawniczek-Walczyk, A.
Gorny, R.L.
Golofit-Szymczak, M.
Niesler, A.
Wlazlo, A.
Powiązania:
https://bibliotekanauki.pl/articles/51116.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Tematy:
occupational exposure
airborne microorganism
endotoxin
beta-glucan
poultry house
different stage
production cycle
poultry farm
animal farm
bioaerosol
Opis:
The aim of the presented study was to assess the exposure of poultry workers to airborne microorganisms, endotoxins and β-glucans during different stages of the chicken production cycle in 3 commercially-operated poultry houses. Personal and stationary sampling was carried out to assess exposure to both viable and total microbial aerosols. The stationary measurements of PM10 were performed to establish the level of endotoxins and β-glucans. The concentrations of bacterial and fungal aerosols ranged from 2.5×102 CFU/m3 – 2.9×106 CFU/m3, and from 1.8×102 CFU/m3 – 1.8×105 CFU/m3, respectively. The number of culturable microorganisms was significantly lower than their total counts, constituting from 0.0004% – 6.4% of the total microbial flora. The level of PM10 in poultry facilities did not exceed 4.5 mg/m3. After the flock entered the clean house, the level of endotoxins and β-glucans increased from below detection limit to 8,364 ng/m3 and from 0.8 ng/m3 to 6,886 ng/m3, respectively. The presented study shows that professional activities in poultry farms are associated with constant exposure to bioaerosol, which may pose a health hazard to workers. It was found that workers’ exposure to airborne microorganisms increased with consecutive stages of the chicken production cycle.
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka zagrożeń biologicznych występujących przy przetwarzaniu biomasy do celów energetycznych
Characteristics of Biological Hazards Associated with Processing of Biomass for Energy Purposes
Autorzy:
Gołofit-Szymczak, M.
Ławniczek-Wałczyk, A.
Górny, R. L.
Cyprowski, M.
Stobnicka, A.
Powiązania:
https://bibliotekanauki.pl/articles/1818071.pdf
Data publikacji:
2016
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
narażenie zawodowe
biomasa
bioaerozol
occupational exposure
biomass
bioaerosol
Opis:
One of the main biohazard for the employees working in processing of biomass for energy purposes is organic dust. The bioaerosol sampling was carried out at two power plants and three combined heat and power plants in Poland which co-combusted the agricultural and forest biomass with coal dust. The bacterial and fungal aerosol was collected stationary by a single-stage MAS-100 impactor. Fourteen different types of biomass samples used in the co-combustion process were also analyzed: conifer chips, alder chips, bark, sawdust, sunflower hull pellet, olive pellet, straw pellet, oat hull pellet, biofuel mix pellet, olive pomace, straw waste, corn pomace, dried fruit and straw with coal. The concentrations of bacterial and fungal aerosol ranged from 0.9×103 to 2.3×106 CFU/m3 and from 0.2×103 to 1.5×105 CFU/m3, respectively. The highest concentrations of bacterial and fungal aerosols were determined at workplaces related to screening, reloading and biomass transport via conveyor belts. The most prevalent in the air were fungi from Aspergillus genus and Gram-negative rods. Bacterial and fungal concentrations in biomass samples ranged from 1.8×103 CFU/g to 3.9×106 CFU/g and from 0.1×103 CFU/g to 22.7×106 CFU/g, respectively. Their highest concentrations were recorded in the samples of straw mixed with coal. This study showed that employees working at a power plant, both in the technological lines and in the laboratories, are associated with the exposure to high concentrations of potentially pathogenic microorganisms. Hence, to reduce such exposure, both hermetization of biomass processing and regular control of work environment should be applied.
Źródło:
Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 193-204
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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