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    Wyświetlanie 1-2 z 2
    Tytuł:
    Strategies and Methods for Investigation of Airborne Biological Agents From Work Environments in Germany
    Autorzy:
    Albrecht, A.
    Kiel, K.
    Kolk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/90580.pdf
    Data publikacji:
    2007
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    workplace atmosphere
    biological agents
    measuring strategies
    analytical methods
    German specification
    EU regulation
    Opis:
    In 2004/2005, a European Twinning Project was carried out to support Polish occupational safety and health institutions in putting into practice Directive 2000/54/EC regarding the protection of workers from risks related to exposure to biological agents at work. Information on and training in sampling and analysing biological agents of people responsible for bioaerosol measurements and the assessment of measuring results from the workplace atmosphere were part of the project. This paper is an extract of the authors’ activities within the project and can be used as a tool for comparable activities in future projects with other European Union candidates. It gives information on working standards for bioaerosol measurements worked out and commonly used in Germany within the frame of European guidelines for bioaerosol measurements in the workplace atmosphere. Additionally it summarizes the authors’ long practical experience in carrying out bioaerosol measurements in the atmosphere of various workplaces.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2007, 13, 2; 201-213
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Practical measurement strategies for verification of freeform surfaces using coordinate measuring machines
    Autorzy:
    Rajamohan, G.
    Shunmugam, M. S.
    Samuel, G. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/220456.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    freeform surface
    coordinate measuring machine
    machining errors
    probe size
    sampling strategies
    substitute geometry
    Opis:
    Freeform surfaces have wider engineering applications. Designers use B-splines, Non-Uniform Rational Bsplines, etc. to represent the freeform surfaces in CAD, while the manufacturers employ machines with controllers based on approximating functions or splines. Different errors also creep in during machining operations. Therefore the manufactured freeform surfaces have to be verified for conformance to design specification. Different points on the surface are probed using a coordinate measuring machine and substitute geometry of surface established from the measured points is compared with the design surface. The sampling points are distributed according to different strategies. In the present work, two new strategies of distributing the points on the basis of uniform surface area and dominant points are proposed, considering the geometrical nature of the surfaces. Metrological aspects such as probe contact and margins to be provided along the sides have also been included. The results are discussed in terms of deviation between measured points and substitute surface as well as between design and substitute surfaces, and compared with those obtained with the methods reported in the literature.
    Źródło:
    Metrology and Measurement Systems; 2011, 18, 2; 209-222
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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