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  1. No Access

    Chapter and Conference Paper

    A VLA Radio Continuum Survey of Planetary Nebulae

    With the Very Large Array it is now possible to make high resolution radio continuum maps with sensitivity less than a milliJansky in an observation of only 5 minutes. We have used this so-called snapshot capa...

    A. Zijlstra, S. R. Pottasch, C. Bignell in Planetary Nebulae (1989)

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    Chapter and Conference Paper

    OH Maser Emission from Young Planetary Nebulae

    OH/IR stars are now generally accepted to be progenitors of planetary nebulae. We have carried out a project to try to find objects in the transition phase between OH/IR stars and PN. Transition objects should...

    A. Zijlstra, S. R. Pottasch, P. te Lintel, C. Bignell in Planetary Nebulae (1989)

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    Chapter and Conference Paper

    Planetary Nebulae Near the Galactic Center I: Method of Discovery and Preliminary Results

    A method is described for finding planetary nebulae. Use is made of the far infrared IRAS colors and radio continuum measurements. The method is applied here to a region within 15° of the galactic center. The ...

    S. R. Pottasch, C. Bignell, R. Olling, A. A. Zijlstra in Planetary Nebulae (1989)

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    Chapter

    Tumour Load Dependent Effectiveness of Cyclophosphamide in Lewis Lung Carcinoma

    The concept of adjuvant chemotherapy is attractive: when the residual tumour load is minimal, a given treatment will be more effective than in the advanced stage of the disease. In the design of a treatment pr...

    J. H. Mulder, C. Bignell, L. M. van Putten in Metastasis (1980)