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Search: WFRF:(Lee P.) > (1986-1989)

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1.
  • Mundy, Lee G., et al. (author)
  • Protostellar Condensations within the Orion Ridge
  • 1986
  • In: Astrophysical Journal. - Philadelphia, PA : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 304:2, s. L51-L55
  • Journal article (peer-reviewed)abstract
    • Aperture synthesis observations of the CS J = 2 to 1 line and 95 GHz continuum emission from a 2 arcmin x 3 arcmin region around IRc2 in the OMC-1 molecular cloud have been obtained at 7.5 arcsec resolution with the Owens Valley Radio Observatory millimeter interferometer. These observations reveal four distinct condensations with the OMC-1 molecular ridge. The condensations lie along the edge of the bright central part of the H II region, M 42, suggesting that they may have been formed as a result of shock compression driven by the H II region. Their masses and densities, M about 50 solar masses and n about 10 to the 6th - 10 to the 7th/cu cm, suggest that the condensations will undergo further massive star formation on a short time scale (about 20,000 yr).
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2.
  • Ranstam, Jonas, et al. (author)
  • Oral-Contraceptive Use and the Risk of Breast Cancer
  • 1987
  • In: New England Journal of Medicine. - 0028-4793. ; 316:3, s. 162-164
  • Journal article (peer-reviewed)abstract
    • To the Editor: The study on oral-contraceptive use and the risk of breast cancer from the Centers for Disease Control (CDC) and the National Institute of Child Health and Human Development (Aug. 14 issue)1 seems to be reassuring for oral-contraceptive users. But, as stated in the editorial by Shapiro in the same issue,2 there are some weak points that need further elucidation. We have found a highly increased risk of breast cancer among young (teenage) oral-contraceptive users in southern Sweden.3 From incidence figures for Sweden, an increase in premenopausal breast cancer can be seen to have started in about 1975,…
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