Abstract: The present invention relates to a hexatoxin peptide variant comprising a. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 27 to 29, wherein the amino acid sequence has at least one amino acid variant on position N27; b. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 2, 6, 7, 30 or 32, wherein the amino acid sequence has at least one amino acid variant on position N28; c. an amino acid sequence which is at least 90% identical to any one of SEQ ID NOs: 1, 3, 4, 5, 8 to 24 or 31, wherein the amino acid sequence has at least one amino acid variant on position N29; d. an amino acid sequence which is at least 90% identical to SEQ ID NO: 25, wherein the amino acid sequence has at least one amino acid variant on position N30; e. an amino acid sequence which is at least 90% identical to SEQ ID NOs: 26, wherein the amino acid sequence has at least one amino acid variant on position N31; or f.

Abstract: A method for adjusting a gas stream separation unit having N adsorbers, where N?2, each following a PSA, VSA or VPSA adsorption cycle, with a time lag of a phase time, said adjustment method including continuously measuring a physical parameter associated with the gas stream entering and/or leaving the adsorber; for at least one step of the adsorption cycle, determining at least one characteristic value of the step chosen in step a) which is selected from the values of the physical parameter measured in step a) or a function of those values; comparing this characteristic value with a target value; and modifying the flow of the gas stream in order to obtain the target value, in the event of a variation between the value of this (these) difference(s) and the target values.

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: The invention relates to a protective enclosure for a mobile tool for dispensing fluid at a cryogenic temperature, said protective enclosure comprising an open end forming an extraction bell, said open end comprising a skirt, characterized in that the skirt comprises a first part made from a hydrophobic first material.