摘要:
The invention relates to sulphonated polyimides, notably of formula (I) The invention also relates to an ion exchange membrane that includes such a polyimide and a fuel cell that includes such a membrane. The membranes of the invention have excellent durability and low cost and the fuel cells can be used, in particular, in electric vehicles.
摘要:
The invention relates to sulphonated polyimides, notably of formula (I) The invention also relates to an ion exchange membrane that includes such a polyimide and a fuel cell that includes such a membrane. The membranes of the invention have excellent durability and low cost and the fuel cells can be used, in particular, in electric vehicles.
摘要:
The invention relates to sulphonated polyimides, notably of formula (I) The invention also relates to an ion exchange membrane that includes such a polyimide and a fuel cell that includes such a membrane. The membranes of the invention have excellent durability and low cost and the fuel cells can be used, in particular, in electric vehicles.
摘要:
The present disclosure describes novel methods for estimating the predictability of demand for one or more products. The data may be organized into one or more hierarchies and may contain one or more attributes.
摘要:
The present invention relates to a process for treating an earth contaminated by at least one radionuclide such as cesium 137Cs comprising at least one step of separating said radionuclide by dispersed air flotation foam produced by blowing air bubbles in a suspension comprising said earth and at least one collector. The present invention also relates to the flotation foam obtained by implementing such a process.
摘要:
The present disclosure describes novel methods that can be utilized to analyze demand patterns for one or more products based on time series data for the product(s) such as order history, shipment history, and point of sale history. The data may be organized into one or more hierarchies and may contain one or more attributes.
摘要:
The present invention relates to a vacuumable gel that can be used for decontaminating surfaces, and also to the use of this gel. The decontamination may be, for example, a radioactive decontamination. The gel of the present invention is composed of a colloidal solution. It comprises from 5 to 25 wt % of an inorganic viscosity modifier relative to the total weight of the gel; from 0.01 to 0.2 wt % of a surfactant relative to the total weight of the gel, and, particularly preferably, a surfactant in an amount strictly below 0.1 wt % relative to the total weight of the gel; from 0.5 to 7 mol, per litre of gel, of an inorganic acid or base; and optionally from 0.05 to 1 mol, per litre of gel, of an oxidizer having a standard redox potential E0 greater than 1.4 V in a strong acid medium or of the reduced form of this oxidizer; the remainder being water. It may be applied, by spraying, to a surface to be decontaminated, and removed in the form of dry residues by suction or brushing after drying.
摘要:
A stabilized foam formed from a foaming aqueous solution comprising from 0.1 to 7 mol of one or more decontamination, stripping and/or degreasing reactants per liter of solution and from 0.01 to 15% by weight of a solid stabilizing agent of solid particles type, with respect to the total weight of the solution, and a process for the preparation of said stabilized foam, to its use in decontaminating, stripping and/or degreasing a surface and to a process for decontaminating, stripping and/or degreasing a surface.
摘要:
The invention relates to a composition which makes it possible to obtain a gelled aqueous foam capable of decontaminating, stripping or degreasing a surface. The composition of the present invention comprises one or more surfactants, one or more acidic or basic reactants and a gelling agent.The decontamination foam obtained from this composition exhibits long lifetimes, generally of between 1 and 10 hours, guaranteeing a prolonged time of action on the surface and a high decontamination effectiveness. These foams can be used to remove the radioactivity from an inaccessible plant, which is large in size and complex in design, by simple filling or by simple spraying over an accessible surface.
摘要:
The invention relates to compact night vision binoculars with a first eyepiece channel and a second eyepiece channel, comprising: an optical separator (8), positioned at the output of a light intensifier tube (2), a plane of reflection (8′) common to the first optical channel (BYZC) and the second optical channel (BCW); a first optical combination comprising two first convergent groups (V1, V2) positioned on either side of a first reflective angled surface (5), a second reflective angled surface (6); a second optical combination comprising two second convergent groups (V1′, V2′) positioned on either side of the common plane of reflection (8′); and a third reflective angled surface (7).