Abstract: An impression tray for taking impressions of transfers of dental implants comprises, in its closed face, a succession of removable segments secured by screws or by studs. After the impression material has set, the segment(s) giving access to the screw of the transfer is/are removed.

Abstract: An impression tray for taking impressions of transfers of dental implants comprises, in its closed face, a succession of removable segments secured by screws or by studs. After the impression material has set, the segment(s) giving access to the screw of the transfer is/are removed.

Abstract: A new mode of construction for vehicles having a dump body comprises a container (6) which rests on a fixed cradle (5) that serves as a chassis (1). The lower portion of the container (6) is adapted to be interfitted in the cradle due to the fact that the section of the cradle corresponds to the section of the lower portion (10) of the container of smaller dimensions, so as to permit the interfitting of the container in the cradle. The container and the cradle are constituted by volumes having substantially concentric transverse sections such that the lower portion (10) of the container precisely interfits in the cradle.

Abstract: The invention relates to a process for the treatment of basic aqueous effluents containing plutonium and possibly uranium.According to this process, the effluents are concentrated by evaporation under reduced pressure, at a temperature such that plutonium precipitation is substantially avoided. Advantageously, the effluents are evaporated at a temperature of 50.degree. to 80.degree. C. for a time such that a concentration factor of at least 6 is obtained.Application to the treatment of aqueous effluents obtained by the alkaline washing of organic solvents used in installations for the reprocessing of irradiated nuclear fuels.