Spectroscopy and Lifetimes of the 1(2)Piu State of Na+2: A New Comparison between Theory and Experiment.

A detailed theoretical study of the spectroscopy of the 1(2)Piu state of Na+2 is presented, including the determination of Dunham coefficients from recent effective potential calculations of the Na+2 molecular potential curves. We emphasize the discrepancies existing among several experiments and among several theoretical models available in the literature. The radiative lifetime of the rovibrational levels of the 1(2)Piu state are also computed and are found in agreement within 20% with experiment.

[Myocardial biopsy in congestive myocardiopathies of apparently primary origin].

38 patients with congestive cardiomyopathy of apparantly primary origin had a myocardial biopsy. The histology of the fragment of myocardium was studied both by light microscopy and electron microscopy. The results were compared with those from 3 "control" cases and with 16 cases of congestive asystole secondary to a known cause.