Abstract:
The present invention relates to a cationic support notably forming a hybrid anionic membrane. The present invention notably relates to a cationic support comprising a solid inorganic support comprising pores, said pores comprising at least at the surface, bound through a covalent bond to the inorganic support, a silica gel comprising cationic groups, designated here as “cationic silica gel” or “cationic silica sol”. More particularly, the present invention relates to an anionic membrane for a fuel cell, in particular of the PEM (“polymer exchange membrane”) type.
Abstract:
A micromagnetometry system for detecting the presence of very small quantities of magnetic particles comprises a first magnetic hybrid AMR/PHR multiring sensor using a Wheastone bridge electrical configuration, a first current source, a first voltage measurement device, a set of at least one magnetic particles deposited on the first magnetic sensor and a processing unit for detecting from a set of different measured differential voltages a magnetic flux shift representative of the presence of a least one deposited magnetic particle.The micromagnetometry system comprises means for creating a magnetic excitation field HAC to make produce by each motionless magnetic particle a stray magnetic field oscillating along the time at a constant frequency ω ranging from 10 Hz to 3 KHz.
Abstract:
Provided are methods, systems and devices for thermodynamically evaluating electrochemical systems and components thereof, including electrochemical cells such as batteries. The present systems and methods are capable of monitoring selected electrochemical cell conditions, such as temperature, open circuit voltage and/or composition, and carrying out measurements of a number of cell parameters, including open circuit voltage, time and temperature, with accuracies large enough to allow for precise determination of thermodynamic state functions and materials properties relating to the composition, phase, states of charge, health and safety and electrochemical properties of electrodes and electrolytes in an electrochemical cell. Thermodynamic measurement systems of the present invention are highly versatile and provide information for predicting a wide range of performance attributes for virtually any electrochemical system having an electrode pair.
Abstract:
A method for preparing a composition including mineral particles functionalized by at least one organic group and having a specific surface defined according to the BET method greater than 500 m2/g, involves: —choosing a phyllosilicate composition, including mineral particles having a thickness of less than 100 nm, a largest dimension of less than 10 μm and belonging to the family of lamellar silicates; —choosing at least one functionalizing agent, from the group formed from the oxysilanes and oxygermanes having at least one organic group, —bringing the phyllosilicate composition into contact with a functionalizing solution including the functionalizing agent, so as to obtain a phyllosilicate composition including mineral particles functionalized by the organic group, while choosing the organic group from the group formed from the cationic heteroaryl groups, the quaternary ammonium groups and the salts of same. The phyllosilicate composition obtained by the method is also described.
Abstract:
The device for electrochemically synthesizing intermediate species of a chemical entity which comprises an electrochemical oxidation cell including a first working electrode and a first counter electrode, capable, when these first electrodes are subject to an electric potential, of generating the intermediate species by oxidation of a solution introduced into the electrochemical oxidation cell and comprising the chemical entity, and an electrochemical stabilization cell including a second working electrode and a second counter electrode respectively distinct from the first working electrode and counter electrode, capable, when these second electrodes are subject to an electric potential, of achieving reduction of a solution. The stabilization cell is connected in series to the oxidation cell so as to allow continuous reduction of the intermediate species generated in the oxidation cell. Applications can be in the pharmaceutical, agri-food and environment fields.
Abstract:
The present invention relates to the use of polymers of the following formula (I): wherein: A1i represents un radical alkylene divalent comprising from 2 to 20 carbon atoms; A2i represents a radical alkylene divalent comprising from 2 to 20 carbon atoms; X1i is chosen from the group consisting of: —S—, —CH2— and a bond; Y represents H, a phenyl group or an alkyl group comprising from 1 to 10 carbon atoms; i represents an integer varying from 1 to n; n represents an integer comprised from 2 to 1,000; provided that the total number of carbon atoms of the radicals A2i, X1i et A1i is greater than or equal to 8; as additives in a polymeric matrix chosen from the group consisting of matrices of polyester, poly(vinly chloride), polyurethane, polyamide, poly(alkyl acrylate), poly(alkyl methacrylate), polystyrene and polyolefin, said polymer of formula (I) being different from poly(ricinoleic acid).
Abstract:
A simulation platform (110) including a calculating element suitable for executing the commands of a simulation program (300), includes: a module for configuring an environment into three dimensions (310); a module for simulating a response of a sensor of the robot (320, 330); and a module for simulating a dynamic of the robot (340). The simulation program includes, in addition, a time-sequencing module (350) including: a logic clock (410) outputting the current logic time; a sequencing scheme (400) associating a set of actions to be performed with each logic time; a sub-module for calling a simulation action (440) suitable for initiating the execution of a simulation action; and a sub-module for calling a reaction action of the robot (450), suitable for initiating the execution of a response action of the robot.
Abstract:
An aqueous liquid medium for analyzing, purifying or separating species in an element having walls or for treating the walls of an element. The medium includes at least a polymer consisting of several polymeric segments. The polymer is of the irregular block-copolymer or irregular comb-like polymer type and has on the average at least three junction points between polymeric segments of different chemical or topological nature. The medium may be used in methods for analyzing, purifying or separating species and methods for treating an element to be contacted with a fluid and/or species contained in the fluid during preservation, transport, analysis, purification or separation of the fluid.
Abstract:
The present invention relates to compounds of the following general formula (I): wherein: R1 is notably a group —NRaRb, Ra and Rb forming together with the nitrogen atom onto which they are bound, a heterocycle comprising from 5 to 30 atoms, R2 is notably an aryl comprising from 5 to 30 atoms, and R3 is notably an alkenyl comprising from 1 to 20 carbon atoms.
Abstract translation:本发明涉及以下通式(I)的化合物:其中:R1特别是与它们所键合的氮原子一起形成的基团-NR a R b,R a和R b,含有5至30个原子的杂环,R 2 特别是包含5至30个原子的芳基,并且R 3特别是包含1至20个碳原子的烯基。
Abstract:
A method for preparing at least one ester of levulinic acid from a biomass includes steps of impregnating the biomass by an organic or inorganic acid, and putting the acidified biomass in contact with a supercritical fluid including at least one olefin.