Abstract: The invention relates to a method for controlling preparative liquid chromatography, comprising the following steps, at least a part of said steps being implemented by a computer comprising a processor and a display screen coupled to said processor: (a) selecting an analytical liquid chromatography method from among thin layer chromatography (TLC) and high performance liquid chromatography (HPLC), (b) inputting analytical liquid chromatography data obtained by the method selected at step (a) for a product to be purified, (c) accessing a table of separating tools available to the user to implement said preparative liquid chromatography, (d) from said analytical liquid chromatography data and table of available separating tools, selecting an optimal separating tool from said table and computing preparative liquid chromatography operating conditions for said selected separating tool.

Abstract: The invention relates to a method for viral disinfection of a defined space, having: diffusing, into the ambient air in the defined space, molecular ozone with an exposure dose CT that corresponds to the product of C × T, where C represents the concentration of molecular ozone and T represents the duration of treatment, said exposure dose CT being greater than 2 mg.min/m3, preferably substantially constant and equal to 5 mg.min/m3; and regulating the humidity level of the ozonized ambient air in the defined space.

Abstract: The present invention relates to a method of manufacturing surge arrestors, the method including stacking varistors; and forming a coating of composite material on the stack. Between these steps, also included is placing a bead of flexible, adhesive, and dielectric material on the previously formed stack in register with the various interfaces between each pair of adjacent varistors.

Abstract: The present invention relates to a method of manufacturing surge arrestors, the method being of the type comprising the steps which consist in:

Abstract: A method and a device for electrochemically treating water to reduce its degree of hardness, wherein the water to be treated is electrolyzed between an anode (5) and a cathode (7, 7') connected to the positive (B) and negative (A) terminals respectively of a current generator (1), each consisting of at least one electrode. A thin porous coating at least partially consisting of calcium carbonate is formed at the cathode (7) and a gas flow is generated through the pores of the cathode (7) as the water is electrolyzed so that the crystals at least partially made up of calcium carbonate and formed on the coating during electrolysis are detached therefrom by the gas flow.

Abstract: A process and a device for the magnetic treatment of fluid as the fluid moves in successive magnetic fields, including a sheet having adjacent transverse bands each of the same width. Each band is charged with magnets oriented alternatively NS/SN or NNSS/SSNN perpendicularly to the plane of the sheet so that successive transverse bands adjacent to each other present upper polar faces alternately having polarities S, N, S, N . . . S,N or S,S, N,N, S,S, N,N, . . . S,S, N,N.

Abstract: A method of manufacturing a surge arrestor, comprising the following steps: making a stack of varistors and forming a first envelope that is at least semi-rigid thereon and that has an outside section that is constant along its length, thereby serving in particular to compensate for surface irregularities in the stack of varistors due to alignment faults and to dimensional dispersions in the varistors, after which an outer envelope of substantially constant thickness is extruded on the first envelope, and then annular fins are installed on the extruded outer envelope.

Abstract: A device for separating particles from a liquid to be treated is disclosed. The device has a cylindrical enclosure with an inlet for creating a swirling flow at its upper end and an annular channel formed by a flow diverter plate leading to a retention chamber at its base. The flow diverter generates an ascending swirling flow of treated liquid which is discharged through an axial outlet tube in the uppermost portion of the enclosure. The flow diverter includes at least one plane central section and means for adjusting its longitudinal position to adjust the annular channel. The axial outlet tube is extended downwardly by a flow adjusting element to create a flow of annular section.

Abstract: A process and a device for the magnetic treatment of fluid as the fluid moves in successive magnetic fields, including a sheet (1) having adjacent transverse bands (2) each of the same width (3) The bands (2) are each charged with magnets oriented alternatively NS/SN perpendicularly to the plane of the sheet so that successive transverse bands adjacent to each other present upper polar faces alternately having polarities S, N, S, N . . . S.N. Each pair of two adjacent bands being related to each other such that the width of the pair is equal to a full wavelength of alternately encountered magnetic fields with a polarity varying periodically, of which the half wave length is equal to the width of one of the adjacent bands (2) when particles (4) are circulated in a fluid relative to the bands (2) whereby relative displacement of the particles (4) with respect to the sheet subjects the particles (4) to magnetic fields which alternate in time of which the frequency increases with relative speed.

Abstract: The present invention concerns a process for water treatment by electrolysis, particularly for decarbonizing water, as well as an apparatus for carrying out this process.This process is characterized in that a metal is chosen for the cathode (1) whose redox potential, which constitutes a reference potential remaining substantially constant relative to the water during the electrolysis, is greater than the effective reduction threshold of the water so as to prevent the reduction of this water and during electrolysis the OH.sup.- ions required for the nucleation of the calcium carbonate are produced exclusively from the dissolved oxygen in the water.

Abstract: A process and an apparatus for treating water which comprises decomposing the minerals dissolved in the water into cations comprising ferromagnetic, paramagnetic and residual particles, and disaggregating the cations and anions by utilizing ferromagnetic particles as a temporary mobile anode facing a strong cathode and paramagnetic particles as a weak cathode. The disaggregated minerals form a dielectric layer on the strong cathode, which is extracted.