FR

MX

STABILIZATION OF LEUKOCYTES Granulocytes are effectively preserved during storage for long periods of time without freezing by using as the storage medium a non-toxic buffer containing both gelatin and plasma.

FR The invention relates to so-called kitchen instruments, making it possible to split a cake or other circular cooked dish into three to twelve parts, without the risk of error. It comprises a cylindrical component called a spindle-holder 1, pierced with six divisions of seven, eight, nine, ten, eleven and twelve holes 2, in which there are housed as many spindles 3 as there are parts required; these spindles are held in position by rubber rings 4. The application of this device may be of interest to bakers, patissiers, cooks, caterers etc., as well as being of interest to the mistress of the house. <IMAGE>

FR The present invention relates to a special platform device making it possible to control the entry or exit to or from a private property. This device, placed in a pit suited to its overall size, at the entrance or at the exit, is made up of a metal framing or portal frame 1 in which is housed the whole working device, hydraulic, pneumatic, double or single action jacks, especially controlled by an electrical power plant and associated with various linking apparatuses such as push buttons, radio control, magnetic loops, etc. The floors are mounted in a tilting manner, while steel spikes penetrate into tyres. <IMAGE>

DD

Moisture content of the starting material, ground perlite or pumicite, is determined at 100-400 deg.C (max 0.8%). The fraction having more than 50 microns size is treated at 900-1300 deg.C when the grains swell.