Abstract: A method and a device are described for detecting at least a portion of a measuring gas component containing bound oxygen in a gas mixture, in particular in an exhaust gas of an internal combustion engine, in a measuring gas chamber by detecting a portion of oxygen that is generated by a reduction of the measuring gas component containing the bound oxygen, in the presence of molecular oxygen, in the device, which includes at least one first pump cell, one reference cell, and one second pump cell.

Abstract: A method and a device are described for detecting at least a portion of a measuring gas component containing bound oxygen in a gas mixture, in particular in an exhaust gas of an internal combustion engine, in a measuring gas chamber by detecting a portion of oxygen that is generated by a reduction of the measuring gas component containing the bound oxygen, in the presence of molecular oxygen, in the device, which includes at least one first pump cell, one reference cell, and one second pump cell.

Abstract: The present invention relates to a process for polymerisation of ethylene, in particular a process which comprises using a catalyst system comprising comprising a catalyst system comprising: i) a solid catalyst comprising Ti, Mg and halogen, ii) a first activator which is at least one trialkylaluminium compound of the formula AIR3, where each R is independently a C2 to C20 alkyl radical, and iii) a second activator which is at least one alkylaluminium chloride of the formula AlR?2Cl, where each R? is independently a C2 to C20 alkyl radical, characterised in that the second activator is introduced directly in the polymerisation reactor, without precontact with the solid catalyst, continuously or semi-continuously and at a maximum rate of introduction at any time corresponding to less than 10 ppm by weight of chlorine relative to the rate of polyethylene production.

Abstract: A process for the treatment of leafy green plants for the extraction of proteins in the pressing juices and an economic dehydration of cake.Treatment of lucerne.The following steps are carried out:1. High level of juice extraction by pressing the raw material plant, resulting in a simultaneous and marked lowering in the moisture content thereof;2. An improvement of the overall heat balance, in relation with the saving of heat obtained:During dehydration of the pressed vegetable matter cake,During concentration of the serum by concentration in a multiple effect apparatus,3. Maximum recovery of the proteins present in the pressing juice, with the production of a dehydrated protein concentrate usable in human nutrition and animal feeding.Application to the economical dehydration of lucerne and recovery of proteins.