Abstract: The invention relates to a novel discriminating molecule family for neutron and gamma radiation, and to the preparation method thereof. Said molecules are also useful for detecting radiation (X, gamma, electrons, protons, ions), and thus for manufacturing radar, and industrial or medical dosimetry instruments.

Abstract: The invention relates to a novel discriminating molecule family for neutron and gamma radiation, and to the preparation method thereof. Said molecules are also useful for detecting radiation (X, gamma, electrons, protons, ions), and thus for manufacturing radar, and industrial or medical dosimetry instruments.

Abstract: The invention relates to unsaturated dipyrromethene-boron borocarbons of formula (I) and the use thereof for fluorescence or electroluminescent analysis. The fluorescent properties are provided by the central ring of six atoms comprising the —N—B—N— sequence, R1 to R7 permitting the modification of the compound properties (fluorescence emission wavelength, quantitative fluorescent yield), at least one of the substituents S1 and S2 has a chromophore end group which permits an excitation of the molecule at wavelengths close to those of the substituent chromophore. A preferably selected from the chromophore substituents with a wavelength close to the ultraviolet which significantly increases the Stokes displacement.

Abstract: The invention relates to compounds, to the complexes they form with a lanthanide, and to the use of the complexes for fluorescence marking or NMR imaging. The complex consists of an Ln ion and a ligand R2—C(X—R1)(R3)—NR4R5. R1 is a functional group, X is a single bond or a hydrocarbon-based chain consisting of at least one alkylene or alkenylene group optionally comprising at least one hetero atom or an arylene. R2 is an anionic group A2 or a C1-C4 alkylene or alkenylene group bearing at least one such group A2 and optionally comprising at least one hetero atom. R3 is H or a C1-C5 alkylene or alkenylene group optionally containing at least one hetero atom, and optionally bearing at least one anionic group A3. R4 is a substituent with light-absorbing properties that forms chelate rings with Ln. R5 is a substituent that forms chelate rings with Ln.

Abstract: The invention relates to compounds, to the complexes they form with a lanthanide, and to the use of the complexes for fluorescence marking or NMR imaging. The complex consists of an Ln ion and a ligand R2—C(X—R1)(R3)—NR4R5. R1 is a functional group, X is a single bond or a hydrocarbon-based chain consisting of at least one alkylene or alkenylene group optionally comprising at least one hetero atom or an arylene. R2 is an anionic group A2 or a C1-C4 alkylene or alkenylene group bearing at least one such group A2 and optionally comprising at least one hetero atom. R3 is H or a C1-C5 alkylene or alkenylene group optionally containing at least one hetero atom, and optionally bearing at least one anionic group A3. R4 is a substituent with light-absorbing properties that forms chelate rings with Ln. R5 is a substituent that forms chelate rings with Ln.

Abstract: This invention relates to ?-SiC foam parts with a specific surface area preferably equal to at least 5 m2/g and with at least two zones A and B with a different cellular porosity distribution, wherein the parts were made by chemical transformation of a porous precursor medium comprising at least two blocks A? and B?, each having a different cellular porosity distribution, and in that the at least two zones A and B are derived from the chemical transformation of the two blocks A? and B?. This foam, optionally after deposition of an active layer, may be used as a filter medium in cartridges designed for the purification of exhaust gases. The invention also relates to manufacturing processes for preparing such a filter medium.

Abstract: The photocatalyst based on a composite WO3—SiC/TiO2 semiconductor and subjected to radiation whose wavelength is at least partly less than 400 nm gives1 photocatalytic oxidation of volatile organic compounds and leads to their total mineralisation into CO2 and H2O. The process for the photocatalytic purification of industrial, agricultural or domestic gaseous effluent may be conducted at room pressure and temperature. Its conversion rate is high and stable.

Abstract: A method for inactivating biological agents dispersed within a gaseous medium includes a step which consists in treating the gas flow with a photoactivated semiconductor, in particular with photoactivated titanium oxide. The invention also concerns a device for implementing the method, as well as the method for decontaminating gaseous medium containing harmful, toxic or pathogenic biological agents, such as bacteria.

Abstract: A SiC-based composite material capable of use as an inner coating for an aluminium smelting furnace or as an inner coating for a fused salt electrolytic cell, wherein said composite material has been prepared from a precursor mixture comprising at least one ?-SiC precursor and at least one carbonated resin, and wherein said composite material contains inclusions, and wherein at least one part thereof comprises ?-SiC, in a ?-SiC matrix.

Abstract: The invention relates to a composite formed of a zeolite (such as ZSM-5 zeolite, ?-zeolite and silicalite) deposited on a rigid support, wherein the rigid support comprises silicon carbide (SiC) with a specific surface area BET of at least 5 m2/g. Preferably, the support is a ?-SiC foam with a specific area of between 10 and 500 m2/g. This composite may be used as a catalyst and/or a catalyst support for chemical reactions in a gas or liquid medium. For example materials of the present invention are useful for example, in connection with cracking, acylation, alkylation and/or isomerization of hydrocarbons.

Abstract: This invention relates to ?-SiC foam parts with a specific surface area preferably equal to at least 5 m2/g and with at least two zones A and B with a different cellular porosity distribution, wherein the parts were made by chemical transformation of a porous precursor medium comprising at least two blocks A? and B?, each having a different cellular porosity distribution, and in that the at least two zones A and B are derived from the chemical transformation of the two blocks A? and B?. This foam, optionally after deposition of an active layer, may be used as a filter medium in cartridges designed for the purification of exhaust gases. The invention also relates to manufacturing processes for preparing such a filter medium.

Abstract: A non-viral transfection vector which is to be delivered into the nucleus of a cell comprises a DNA molecule that is equipped with 1 to 25 NLS conjugates. Each conjugate comprises a nuclear localization signal (NLS) covalently linked to an oligonucleotide. The NLS conjugate may be covalently linked to one or both termini of a linear DNA molecule, associated with a plasmid DNA molecule by forming a triple helix, or inserted in a plasmid DNA molecule by strand invasion. The transfection vector is useful for gene therapy applications.