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    Wyświetlanie 1-4 z 4
    Tytuł:
    Design of a 5-Station Macromolecular Crystallography Beamline at MAX-Lab
    Autorzy:
    Mammen, C. B.
    Ursby, T.
    Cerenius, Y.
    Thunnissen, M.
    Als-Nielsen, J.
    Larsen, S.
    Liljas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030553.pdf
    Data publikacji:
    2002-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.85.Qe
    87.14.Ee
    87.14.Gg
    Opis:
    A beamline for macromolecular crystallography is under construction at the Swedish synchrotron light source MAX-lab at Lund University in a collaborative effort between Denmark and Sweden. Of the 7 mrad horizontal wiggler fan emitted from the new superconducting multipole wiggler, the central 2 mrad will be used and split in three parts. The central 1 mrad will be used for a tunable station optimised for multi-wavelength anomalous diffraction experiments and on each side of the central fan there will be two fixed wavelength stations using different energies of the same part of the beam. These in total five stations can be used simultaneously and independently for collecting diffraction data.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 5; 595-602
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Offshore drilled cuttings management
    Autorzy:
    Bilstad, T.
    Stenberg, E. S.
    Jensen, B.
    Larsen, T.
    Toft, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/298998.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    drilling
    fluids
    muds
    cuttings
    cleaning
    TCC
    reuse
    disposal
    regulations
    wiercenie
    płyny
    muły
    ponowne użycie
    regulacje
    Opis:
    The search for offshore fossil fuels generates large volumes of drilled cuttings which under certain conditions are defined hazardous, negating disposal at sea. Much of the cuttings end up in onshore landfills. The types of fluids used in well drilling operations determine to which extent the cuttings are considered hazardous. The three main types of fluids are oil based mud (OBM), water based mud (WBM) and synthetic based mud (SBM). The purpose of adding fluids or mud in the drilling operations is to cool and lubricate the drill bit, to stabilize the well bore, to control subsurface pressure, formation pressure, well stability and corrosion, and to carry cuttings to the surface. OBM is based on either diesel or mineral oil. One advantage of OBM is enhanced drilling performance, especially in technical challenging environments. A drawback, however, is the toxicity of OBM, prohibiting discharge of cuttings to the marine environment. Drilled cuttings are rocks produced during drilling operations, becoming coated with drilling fluids. Historically, cuttings have been disposed to sea. However, recent environmental laws and regulations prohibit such practice. Re-injection of cuttings as a slurry into subsurface formations has also been discontinued due to leaks and re-entering of slurry into the bottom waters. Transport of cuttings to shore is therefore the choice. For logistics and cost reasons emphasis is put on offshore waste minimization and reuse/recycle. Total fluid management (TFM) leads to environmental impact reduction (EIR). Minimization of drilling fluids and reuse of fluids lead to cost reduction. Volume of cuttings is reduced through directional drilling and by drilling smaller diameter holes. Synthetic based drilling fluids (SBM) are replacing OBM. Drilling wastes are further separated into a fluid and a solid phase. The solids may be used for road and other construction purposes, whereas the OBM is burned for energy recovery. The purpose of the thermo-mechanical cuttings cleaner (TCC) is to convert hazardous oily cuttings into useful products. TCC facilities are only available onshore in Norway. However, offshore TCC units will in due time be introduced, negating the need for transport of cuttings to shore. Cuttings are allowed disposed to sea when no toxic fluids are attached. TCC separation is accomplished by generating temperatures of 240-300 degrees of Celsius sufficient for evaporation of oil and water from the mineral solids.
    Źródło:
    AGH Drilling, Oil, Gas; 2013, 30, 1; 47-50
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Omówienie: Nordic Middle Ages – Artefacts, Landscapes and Society. Essays in Honour of Ingvild Øye on her 70th Birthday, Eds. Irene Baug, Janicke Larsen, Sigrid Samset Mygland. University of Bergen Archaeological Series 8
    Autorzy:
    Kowalska, Anna B.
    Powiązania:
    https://bibliotekanauki.pl/articles/440612.pdf
    Data publikacji:
    2017-12-21
    Wydawca:
    Muzeum Narodowe w Szczecinie
    Źródło:
    Materiały Zachodniopomorskie; 2017, 13; 259-265
    0076-5236
    Pojawia się w:
    Materiały Zachodniopomorskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of an Ergonomic Intervention on Musculoskeletal, Psychosocial and Visual Strain of VDT Entry Work: Organization and Methodology of the International Study
    Autorzy:
    Dainoff, M. J.
    Aaras, A.
    Horgen, G.
    Konarska, M.
    Larsen, S.
    Thoresen, M.
    Cohen, B. G. F.
    Powiązania:
    https://bibliotekanauki.pl/articles/90866.pdf
    Data publikacji:
    2005
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    ergonomic interventions
    VDT
    office ergonomics
    multidisciplinary
    ergonomia
    praca biurowa
    choroby narządów ruchu
    warunki pracy
    komputer
    stres
    zagrożenia zdrowia
    współpraca międzynarodowa
    Opis:
    This special issue of the International Journal of Occupational Safety and Ergonomics (JOSE) reports the results from an extensive multinational and multidisciplinary collaborative investigation of the impacts on visual display terminal (VDT) work of musculoskeletal, visual, ergonomic, and psychosocial factors. For brevity, this effort has been referred to as the MEPS project musculoskeletal-eyestrain-psychosocial-stress). This paper lays out the basic methodological structure of the study. The study was conducted in 4 countries utilizing VDT data entry workers as the primary subject population. A battery of objective and subject assessment measures, including muscle load, visual function, physical and visual strain, postural, ergonomic and psychosocial factors, were assessed at 3 different points in time. A pre-test was given prior to an ergonomic intervention. Two posttests were given 1 month and 1 year after the ergonomic intervention.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2005, 11, 1; 9-23
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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