N. 51 - Apresentação

Nevus sebáceo cerebriforme: uma rara apresentação*

A 13-year-old boy presented congenital, raised, yellowish colored plaques with fi broelastic consistency, which were velvety in appearance, alopecic, with clearly defi ned limits and sulci or well-marked meandering invaginations, a cerebriform appearance on the upper part of the right ear, accompanied by alopecia in the temporomandibular region-parietal. The lesion was asymptomatic. Histopathol...

پیوستها 51

Investigation of 50 Cr ( d , n ) 51 Mn and natCr ( p , x ) 51 Mn processes with respect to the production of the positron emitter 51 Mn

The positron emitter Mn (t1/2 5 46.2 min, Iβ1 5 97%) is of potential interest in positron emission tomography (PET). With a view to optimizing its production route, excitation functions for deuteron induced nuclear reactions on isotopically enriched (,95%) Cr were determined radiochemically over the energy range of 3 to 13 MeV and for proton induced nuclear reactions on Cr in the range of 18 to...

0 51 10 51 v 1 2 9 N ov 2 00 5 Mass measurements and superallowed β decay

A recent Penning-trap measurement of the masses of V and Ti leads to a QEC value that disagrees significantly with the previously accepted value, and destroys overall consistency among the nine most precisely characterized T = 1 superallowed β emitters. This raises the possibility of a systematic discrepancy between Penning-trap measurements and the reaction-based measurements upon which the QE...

جلد 51