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The intramolecular excited-state proton transfer (ESIPT) and internal conversion (IC) of o-hydroxybenzaldehyde was investigated by transient absorption measurements with 30 fs time resolution and quantitative fluorescence spectroscopy. A 45 fs delayed rise of the product emission and coherently excited vibrations indicate that the ESIPT is a ballistic motion of a well defined wavepacket along skeletal coordinates of the H-chelate ring. The IC proceeds as thermally activated process over an energy barrier of about 200 meV caused by an avoided crossing between the ππ*- and πσ*-state. The coordinates involved in the ESIPT and in the IC are found to be orthogonal. [Copyright &y& Elsevier]

An abstract of the article "Effectiveness of time prenatal diagnosis of vasa previa: a report of three cases" by L. Kuder and others is presented.