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sur le développement des zones arides et semi-arides

Titre : Radioactivity of the rhyolite-granitoide rocks in the Jabal Eghi area of Southern Libya

Radioaktivnost riolitsko-granitoidnih stena na području Džabal Egija (Jabal Eghi) u južnoj Libiji

Auteur : Tereesh, Mehdi Bashir

Université de soutenance  : University of Belgrade,

Grade : Doctoral Dissertation 2013

Résumé
Investigation on the naturally occurring radionuclides (NORM) is of a great importance in many scientific areas, especially geology. The basis for such a research is generally the determination of radioactive elements of the natural radioactive series of uranium (the 238U and the 235U series) and thorium (232Th) in rocks, as well as the isotopes of potassium and rubidium, as the most abundant radioactive isotopes on Earth. Potassium is the most abundant among them in the Earth’s crust (its Clarck’s value is 2.5 %), while uranium and thorium appear as ‘trace’ elements with Clarck’s values of 2.50 and 13 mg kg-1, respectively... Faculty :

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