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    Wyświetlanie 1-6 z 6
    Tytuł:
    Air aerosol sampling station AZA-1000 at Polish Polar Station in Hornsund, Spitsbergen
    Autorzy:
    Mysłek-Laurikainen, B.
    Matul, M.
    Mikołajewski, S.
    Trzaskowska, H.
    Preibisz, Z.
    Garanty, I.
    Kubicki, M.
    Rakowski, P.
    Krynicki, T.
    Stefański, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/148535.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    air sampling
    radioactive aerosols
    radioactive air pollution
    radionuclides
    polar air monitoring
    Opis:
    The high volume air sampler AZA-1000 was built in the Environmental Protection Laboratory of the Andrzej Sołtan Institute for Nuclear Studies. In July 2002, this air sampler AZA-1000 was installed in the Polish Polar Observatory of the Polish Academy of Science in Hornsund, Spitsbergen. The device was built with numerous specific features which make possible to operate such station in extra difficult climatic conditions of polar region. Since July 2002, radioactive aerosols were collected at the Petrianov filter tissue FPP-15-1.5 and measured using high resolution g spectrometry in the Environmental Protection Laboratory at Świerk. The concentration of the airborn, cosmogenic radionuclide 7Be and of other natural and man maid radionuclides like 137Cs was determined. A comparison of the preliminary results with those from the ASS-500 sampling station operating at Świder is presented.
    Źródło:
    Nukleonika; 2006, 51, 2; 137-140
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of benzene, toluene, ethylbenzene and xylene in field and laboratory by means of cold fiber SPME equipped with thermoelectric cooler and GC/FID method
    Autorzy:
    Tajik, L.
    Bahrami, A.
    Ghiasvand, A.
    Shahna, F. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/779634.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    aromatic hydrocarbons
    air sampling
    cold fiber
    solid-phase microextraction
    Opis:
    A simple and effective cooling device based on a thermoelectric cooler was applied to cool the SPME fiber. The device was used for quantitative extraction of aromatic hydrocarbons in the air. Several factors such as coating temperature, extraction temperature and relative humidity in the laboratory setting were optimized. Comparison of the results between the cold fiber SPME (CF-SPME) and NIOSH 1501 method on standard test atmosphere indicated a satisfactory agreement. The CF-SPME and SPME method were also compared. The results revealed that CF-SPME has the most appropriate outcome for the extraction of aromatic hydrocarbons from the ambient air. The cold fiber SPME technique showed good results for several validation parameters. Under the optimized conditions, the limits of detection (LOD) and the limits of quantification (LOQ) ranged from 0.00019 to 0.00033 and 0.0006 to 0.001 ng ml−1 , respectively. The intra-day relative standard deviation (RSD) showed ranging from 4.8 to 10.5%.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 3; 9-15
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrence of fungi and cytotoxicity of the species: Aspergillus ochraceus, Aspergillus niger and Aspergillus flavus isolated from the air of hospital wards
    Autorzy:
    Gniadek, Agnieszka
    Krzyściak, Paweł
    Twarużek, Magdalena
    Macura, Anna B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2161861.pdf
    Data publikacji:
    2017-03-30
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    cytotoxicity
    airborne fungi
    MTT assay
    Aspergillus
    air sampling
    hospital environment
    Opis:
    Objectives The basic care requirement for patients with weakened immune systems is to create the environment where the risk of mycosis is reduced to a minimum. Material and Methods Between 2007 and 2013 air samples were collected from various wards of a number of hospitals in Kraków, Poland, by means of the collision method using MAS-100 Iso MH Microbial Air Sampler (Merck Millipore, Germany). The air mycobiota contained several species of fungi, and almost 1/3 of it was made up of the species of the Aspergillus genus. Sixty-one strains of species other than A. fumigatus were selected for the research purposes, namely: 28 strains of A. ochraceus, 22 strains of A. niger and 11 strains of A. flavus species. Selected fungi underwent a cytotoxicity evaluation with the application of the MTT colorimetric assay (3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide). The assay assesses cell viability by means of reducing the yellow tetrazolium salt to insoluble formazan. A semi-quantitative scale for cytotoxicity grading was adopted: low cytotoxic effect (+) with half maximal inhibitory concentration (IC₅₀) for values ranging from 31.251 cm²/ml to 7.813 cm²/ml, medium cytotoxic effect (++) for values ranging from 3.906 cm²/ml to 0.977 cm²/ml and the high one (+++) for values ranging from 0.488 cm²/ml to 0.061 cm²/ml. The absence of cytotoxicity was determined when the IC₅₀ values was at ≥ 50. Results For 48 samples the analyzed fungi displayed the cytotoxic effect with A. ochraceus in 26 out of 28 cases, with 11 strains displaying the high cytotoxic effect. The lowest cytotoxicity was displayed by fungi of A. niger in 13 out of 22 cases, and the major fungi of A. flavus species were toxic (9 out of 11 cases). Conclusions A half of the fungi displayed the low cytotoxic effect. On the basis of the comparison of average cytotoxicity levels it was determined that there were significant differences in the levels of cytotoxicity of the analyzed fungi. However, such statement may not provide grounds for a definite conclusion about the compared species of fungi that display a more cytotoxic effect than others. Int J Occup Med Environ Health 2017;30(2):231–239
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2017, 30, 2; 231-239
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The interaction between the indoor environment and building construction
    Oddziaływanie pomiędzy środowiskiem zewnętrznym a konstrukcją budynku
    Autorzy:
    Toth, S.
    Vojtus, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2065257.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    historic buildings
    incorrect utilization
    mildew
    air contamination
    air sampling
    biological factors
    indoor environment
    fungoid organisms
    budynki historyczne
    nieprawidłowa eksploatacja
    pleśń
    zanieczyszczenie powietrza
    pobieranie próbek powietrza
    czynniki biologiczne
    środowisko wewnętrzne
    grzyby
    Opis:
    The project listed in the acknowledgment focused on monitoring the occurrence of various fungus genera within building constructions of residential, non-residential and historic buildings. Fungoid organisms found on indoor surface of building constructions are a serious aesthetic and constructional/structural disadvantage with enormous impact on the interior environment of exploitable space. They can be found not only in rooms of old buildings, but also in newly built or reconstructed areas, where one would not expect them. Greater amounts of fungoid organisms occurring in artificial environments are harmful to humans. Therefore professional information provided to the public concerning their harmful impact not only on construction materials, but also on human health is very necessary.
    Celem projektu jest monitorowanie występowania różnych rodzajów grzybów wewnątrz konstrukcji budynków mieszkalnych, niemieszkalnych oraz zabytkowych. Grzyby znajdowane na wewnętrznej powierzchni konstrukcji budowlanych w swojej najprostszej postaci jako pleśń są poważną estetyczną i konstrukcyjno-strukturalną wadą z ogromnym wpływem na jakość środowiska wnętrz. Można je znaleźć nie tylko w pomieszczeniach starych budynków, ale również w nowo budowanych lub przebudowywanych obiektach, gdzie nie powinny występować. Duża ilość grzybów obserwowana w sztucznie stworzonym środowisku w pomieszczeniach jest szkodliwa dla ludzi. Dlatego też profesjonalne informacje podane do publicznej wiadomości, dotyczące ich szkodliwego wpływu nie tylko na materiały budowlane, ale także na zdrowie ludzi, są bardzo potrzebne.
    Źródło:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2014, 1 (13); 130--137
    2299-8535
    2544-963X
    Pojawia się w:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods of sampling airborne fungi in working environments of waste treatment facilities
    Autorzy:
    Černá, Kristýna
    Wittlingerová, Zdeňka
    Zimová, Magdaléna
    Janovský, Zdeněk
    Powiązania:
    https://bibliotekanauki.pl/articles/2177446.pdf
    Data publikacji:
    2015-12-30
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    airborne fungi
    waste sorting facility
    filter based bioaerosol sampling
    surface air system method
    working environment
    plastics
    Opis:
    Objectives The objective of the present study was to evaluate and compare the efficiency of a filter based sampling method and a high volume sampling method for sampling airborne culturable fungi present in waste sorting facilities. Material and Methods Membrane filters method was compared with surface air system method. The selected sampling methods were modified and tested in 2 plastic waste sorting facilities. Results The total number of colony-forming units (CFU)/m³ of airborne fungi was dependent on the type of sampling device, on the time of sampling, which was carried out every hour from the beginning of the work shift, and on the type of cultivation medium (p < 0.001). Detected concentrations of airborne fungi ranged 2×10²–1.7×10⁶ CFU/m³ when using the membrane filters (MF) method, and 3×10²–6.4×10⁴ CFU/m³ when using the surface air system (SAS) method. Conclusions Both methods showed comparable sensitivity to the fluctuations of the concentrations of airborne fungi during the work shifts. The SAS method is adequate for a fast indicative determination of concentration of airborne fungi. The MF method is suitable for thorough assessment of working environment contamination by airborne fungi. Therefore we recommend the MF method for the implementation of a uniform standard methodology of airborne fungi sampling in working environments of waste treatment facilities.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2016, 29, 3; 493-502
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A System for Measuring Vertical Concentration Profiles of Gaseous Pollutants, Using Carbon Dioxide as a Case Study
    Autorzy:
    Micallef, A.
    Deuchar, C. N.
    Colls, J. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/91042.pdf
    Data publikacji:
    1998
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    concentration gradient
    spatial distribution
    multi-level sampling
    human exposure
    indoor-outdoor air pollution
    gradient stężenia
    rozkład przestrzenny
    zanieczyszczenia gazowe
    Opis:
    An electronically-controlled sampling system, characterised by its organ pipe design, has been developed for sampling air sequentially, at different heights within the breathing zone. Data are automatically logged at the different receptor levels, for the determination of the average vertical concentration profile of gaseous pollutants. The system has been coupled to a carbon dioxide monitor and used in a brief study of the spatial and temporal variation of indoor carbon dioxide concentration. The system can easily be extended for different heights or modified for use with other types of gas monitor. The results of a trial run, which was carried out in a coffee room, are presented and applications of the Organ Pipe Sequential Sampling (OPSS) system are discussed.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 1998, 4, 3; 333-346
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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