Skip to main content

6 Result(s)

within F. Begemann Remove this filter Science, Humanities and Social Sciences, multidisciplinary Remove this filter

and

  1. No Access

    Article

    Tellurium in pre-solar diamonds as an indicator for rapid separation of supernova ejecta

    Carbon-rich ‘carbonaceous’ meteorites contain several types of dust grains with an isotopic signature that identifies them as being of pre-solar origin1,2,3. Of these grains, diamonds are of particular interest: ...

    S. Richter, U. Ott, F. Begemann in Nature (1998)

  2. No Access

    Article

    Are all the ‘martian’ meteorites from Mars?

    The shergottites, nakhlites and Chassigny, collectively known as the SNC meteorites, seem to define a petrological and geochemical sequence1. Together with their young radiometric solidification ages of only ∼1,3...

    U. Ott, F. Begemann in Nature (1985)

  3. No Access

    Chapter and Conference Paper

    Gastroduodenales Ulcus und duodenogastraler Reflux

    Eine Beteiligung des duodenogastralen Refluxes in der Pathogenese des Ulcus ventriculi wird seit den Untersuchungen RHODES et al. (1969) diskutiert. Neben Gallensäuren soll vor allem Lysolecithin ursächlich fü...

    PD Dr. med. V. Schumpelick, D. Stemme… in Chirurgisches Forum’82 für experimentelle … (1982)

  4. No Access

    Article

    Allende meteorite—old age but normal isotopic composition of potassium

    The extensive investigation of the Allende meteorite has provided much new information on the early history of our Solar System. The findings include small but significant anomalies of the isotopic composition...

    W. Stegmann, F. Begemann in Nature (1979)

  5. No Access

    Article

    Implications from the absence of a 41K anomaly in an Allende inclusion

    CLAYTON1 has elaborated on his unorthodox interpretation2 of the occurrence in meteorites of the decay products of the extinct radionuclides 129I and 244Pu. He has suggested that these radioactive species did not...

    F. BEGEMANN, W. STEGMANN in Nature (1976)

  6. No Access

    Article

    Neutron produced Phosphorus-32 in the Barwell and St. Severin Meteorites

    NUCLEAR reactions induced by neutrons in meteorites have been discussed by a number of authors1–6. A few radioactive and stable isotopes, produced mainly by thermal and epithermal neutrons, have been measured7–15

    F. BEGEMANN, E. VILCSEK, H. WÄNKE in Nature (1967)