Stabilization of Cr-rich tannery waste in fly ash matrices.

In the present work, the stabilization/solidification of a Cr-rich ash obtained from the anoxic incineration of tannery hazardous wastes was studied. Chromium in the starting waste was exclusively in amorphous form and in trivalent state. The waste was embedded in fly ash-based cementitious material matrices.

[Evaluation of the criteria used for the interruption of treatment in bacterial meningitis (persistent pleocytosis and hyper-cervicospinal fluid proteins (author's transl)].

Among 809 patients with bacterial meningitis persistent pleocytosis greater than 60 white blood, cells/mm3, after 10 days or more of therapy, was found in 25 patients and persistent hypercervicospinal fluid proteins greater than 70 mg/dl in 24. In 14 patients there was an association of these disturbances. All cases, except one, were adequately treated.