This work aims to determine the transfer factors (TFs) of 40 K, 226 Ra and 232 Th from soil to vegetables, because there are few surveys of them in Iraq. The samples were taken from three important agricultural areas supplying the vegetable products needed by the Iraqi population. Using NaI(Tl) technique, the average values of TFs of the above radioactive isotopes were found to be 0.60, 0.41, 0.59 and 0.05, 0.03, 0.05 from soil to dry and fresh samples, respectively. The radiation hazard indices and the total annual dose were found to be within the range of the world values.

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There is a growing need for the production of certain types of asphaltic materials having good rheological properties compared with the unmodified asphaltic materials, thus many experiments were performed to prepare a modified asphalt that can be used in different fields. This study aims to modify asphalt with the addition of (spent lubricating oils) with different percentages and with air blowing oxidation. From this work we obtained the asphaltic materials which can be used in paving and mastic production according to the measuring of the (ductility, penetration, asphaltene and softening point