Context. The formation of silicates in circumstellar envelopes stars evolving through the asymptotic giant branch (AGB) is still highly debated given uncertainties affecting stellar evolution modelling, description dust process, and capability silicate grains to accelerate outflows via radiation pressure. Aims. We study winds intermediate mass ( M ≥ 4 ⊙ ) solar metallicity while AGB phase. test...

Introduction: Single isocentre half-beam block (HBB) technique permits the avoidance of hot and cold spots. This technique is very useful in sparing the underlying ipsilateral lung and heart, if the left breast is treated. The major advantage of this technique is that it facilitates the complete sparing of both contralateral breast and lung. Regarding this, the present study aimed to analyse th...

In hybrid zones between genetically differentiated populations, variation in locus-specific rates of introgression may reflect adaptation to different environments or adaptation to different genetic backgrounds. The European rabbit, Oryctolagus cuniculus, is well-suited to studies of such hybrid zone dynamics because it is composed of two genetically divergent subspecies that hybridize in a zon...

Sickle cell anemia is common in Africa, because it is selected by the pressure related to infection with Plasmodium spp. However, its distribution varies locally, especially in isolated populations. The aim of this study was to analyze the frequency of the HbS mutation in two local tribes of Arab origin, the Shagia and Manasir, which are both from the region of the 4 Nile cataract. The Shagia c...