Observation of a superfluid He-3 A- B phase transition in silica aerogel.

New NMR studies of 3He in high-porosity aerogel reveal a phase transition from an A-like to a B-like phase on cooling. The evidence includes frequency shift and magnetic susceptibility data, and similar behavior is found in two quite different aerogel samples. The A-like phase is stable only very near to T(c) but can be supercooled to below 0.

[Comparative activity of depot sulfanilamides in experimental infection in mice caused by K1. pneumoniae].

The chemotherapeutic activity of 6 sulfanilamide depots, i.e. sulfalene, sulfamonomethoxin, sulfadimethoxin, bayrena, pallidin and sulfapyridazin was studied on 890 albino mice inoculated intranasally or intraperitoneally with 51.

[Urinary excretion of dioxidine and quinoxidine in experiments on mice].

By using spectrochromatography the dioxidine and quinoxidine passage with urine, depending upon their doses and the method of introduction, was studied in tests on mice. On its enteral or subcutaneous introduction dioxidine is found in the urine within a period of 7-to 24 hours (depending upon the dose administered). With its maximum concentration it is definable within 1 hour.