conclusions at present, no single diagnostic procedure is able to cause damage to the embryo or fetus. there are possible harmful effects for doses above 0.2 - 0.25 gy (20-25 rad). context many women of reproductive age and pregnant women require diagnostic tests involving ionizing radiation. fetal exposure to radiation worries both the patient and the obstetricians and could lead to inappropri...

the x-ray charge density analysis of a hydroxynaphthoquinnne derivative was obtained by multipolar hansen-coppens formalism refinement through high resolution x-ray diffraction data at 100(1) k. the molecularproperties of the title compound resulted from the combined experimental and the quantum theory of atoms inmolecules (qtaim) studies. the topological properties of the covalent bonds and of...

the knoevenagel condensation of aromatic aldehydes with barbituric acid, dimedone and malononitrile occurred in the presence of bf3/nano-γ-al2o3 at room temperature in ethanol. this catalyst is characterized by powder x-ray diffraction (xrd), fourier transform infrared spectroscopy (ft-ir), thermal gravimetric analysis (tga), field emission scanning electron microscopy (fesem) and energy-disper...