International audienceWe investigate quasi-geostrophic waves in a rotating spherical shell permeated by an imposed magnetic field B. A projection of the momentum equation onto a well chosen class of velocity fields results in a quasi-geostrophic reduced model where, in contrast with previous such models, the evolution of the velocity is not prescribed by an equation for the axial vorticity. We consider fields B that may be longitudinally dependent. Increasing the angular rotation frequency, we find that the non-axisymmetric Alfvén waves that are present at low rotation morph into inertial waves, torsional Alfvén waves and low frequency magnetostrophic waves that satisfy Taylor’s constraint (i.e. vanishing acceleration of the geostrophic cylinders by the magnetic forces)
A multicentric randomized trial conducted by the French Associations for Surgical Research tested total gastrectomy (TG) versus subtotal gastrectomy (SG) for adenocarcinoma of the antrum operated with curative intent, in terms of postoperative mortality and 5-year survival. TG was performed in 76 patients and 93 patients underwent SG. Elective TG did not increase postoperative mortality (1.3%) compared with SG (3.2%). There was no statistical difference between the two techniques with regard to 5-year survival (48%). These results were reviewed according to the most recent controversies reported in the literature, i.e. the radicality in lymph node resection enabled by each of the two procedures, the required proximal free margins in SG, the long-term risk of a gastric stump and the nutritional consequences of each technique.
The gastrointestinal cancer-associated antigen (GICA) characterized by 1116 NS 19-9 monoclonal antibody was studied in human fetal organs by immunohistology and immunofixation on nitrocellulose sheets. It was found in all the gastrointestinal tracts of fetuses and newborns. Other fetal organs, except biliary and pancreatic ducts, were negative. Immunohistological data and enzymatic studies led us to conclude that GICA is predominantly a mucin-type glycoprotein in fetal organs.
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