AR is a risk aspect linked to the improvement GERD in kids.AR is a threat aspect linked to the development of GERD in children. Reconstruction of finger-pulp flaws continues to be a challenge, although the treatment varies extensively. The homodigital island flap centered on dorsal branches regarding the correct digital artery (PDA) the most…[Read more]

The mirror surface height error and alignment demands for diffraction-limited performance are challenging but perhaps attainable in the coming decades. Since the focal ratio for a diffraction-limited x-ray telescope is very huge (f/D∼105), the only important off-axis aberration is curvature of field, therefore a 1 arc sec field of view is f…[Read more]