Experimental studies on the lyophilized nerve heterografts.

Studies on the Stability of Lyophilized BCG Vaccine *†

The application of lyophilization to the preservation of BCG, in an effort to combat the rapid loss in allergenic potency of the liquid vaccine, has presented important technical difficulties. Although the effectiveness of lyophilized BCG in producing tuberculin conversion appears to be as great as that of the fresh vaccine,"118,2 clinical experience has shown that its use engenders quantitativ...

Decellularized heterografts versus cryopreserved homografts: experimental study in sheep model.

OBJECTIVES The aim of this study is to assess the biological behaviour of porcine decellularized heterografts (Desc group) compared with cryopreserved homografts (Crio group) implanted in juvenile sheep. METHODS Decellularized porcine pulmonary heterografts were implanted in five animals and cryopreserved pulmonary homografts in another five. The animals were followed-up for a mean of 280 +/-...

Experimental Studies on the Conical Cap tray Performance

In the present study, experimental investigations about the hydrodynamics of the conical cap tray (ConCap tray) have been carried out. The ConCap tray is an innovative and novel type of cap trays. The effect of the different weir height (2.5, 5 and 7 cm) on the weeping, entrainment and the total pressure drop for the ConCap tray was measured, compared and correlated. The hydraulic experiments w...

Experimental and CFD Studies on the Effect of the Jet Position on Mixing Performance

Kinetic studies on the destructive action of oxygen on lyophilized Serratia marcescens.

Dried Serratia marcescens (ATTC strain 14041) cells were exposed to various partial pressures of oxygen and nitrogen. The colony-forming ability of the organisms was rapidly destroyed during exposure to oxygen but was unimpaired by exposure to purified nitrogen. The degree of inactivation depended upon temperature, time, and the partial pressure of oxygen, regardless of whether pure oxygen or d...