摘要:
The invention relates to cationic complexes made up of a lanthanide ion Ln3+ and a ligand of formula (I): with X, Y and R1 as defined in claim 1, and to the salts thereof with an anion, the solvates and hydrates thereof; with the exception of cationic complexes made up of a lanthanide ion Ln3+ and a ligand of one of formulae (I.1) or (I.4) as defined in claim 1, and the salts, solvates and hydrates thereof. The invention also relates to the use of such a complex or of a cationic complex made up of a lanthanide ion Ln3+ and a ligand of formula (I.1) or (I.4) as defined in claim 1, or of one of the salts thereof with an anion, the solvates or hydrates thereof, as an aid to the crystallisation of a biological macromolecule, as well as to crystallisation methods and methods for analysing or determining the structure of a biological macromolecule.
摘要:
The invention relates to a product intended for the preparation of an injectable composition containing, separated from one another, at least one first and one second composition(s), and in which: —the first composition, referred to as A, is an aqueous solution of chitosan with a pH in the range extending from 3 to 7, and —the second composition, referred to as B1, corresponds to particles of one or more bioactive glass(es), said product not containing glycerophosphate; and also a process for preparing an injectable composition, the corresponding injectable compositions and devices for packaging a product according to the invention.
摘要:
A process for obtaining borazane (NH3—BH3) includes introducing anhydrous liquid ammonia (NH3(l)) into a reactor thermostatically regulated to between a temperature θ1 and 40° C.; introducing, with stirring, into the reactor an amine borane complex (Am.BH3), the corresponding amine (Am) of which is soluble in anhydrous liquid ammonia only to a proportion of less than 10 g in 100 g of ammonia at 20° C., being introduced in an amount such that the mole ratio R=(NH3(l))/(Am.BH3) is greater than or equal to 5; stirring the mixture; stopping the stirring to obtain two demixed phases: a light phase constituted essentially of a solution of anhydrous liquid ammonia (NH3(l)) containing borazane; and a heavy phase constituted essentially of the amine corresponding to the amine borane complex introduced; isolating the borazane and drying under vacuum thereof; the temperature θ1 being greater than or equal to the melting point of the amine borane complex.
摘要:
The invention relates to a novel use of ultrafine nanoparticles as an imaging agent in a method for diagnosing a renal disorder. The invention also relates to the use of ultrafine nanoparticles as an imaging agent in methods for monitoring the therapeutic efficacy of a renal disorder treatment.
摘要:
A method to determine an electronic signature characteristic of a fluid medium comprises making a reception surface for receiving the fluid medium on at least one face of the substrate, putting the fluid medium into contact with the reception surface in order to make an interface between the substrate and the fluid medium, lighting at least one zone of the interface through the fluid medium with a pulsed light beam in order to create photogenerated electric charges, using a microwave reflectometer to measure the lifetime durations of the photogenerated electric charges, which durations have respective values that depend on the recombination rate at the interface between the substrate and the fluid medium, creating a matrix of measured lifetime duration values for the photogenerated electric charges, and using the matrix to determine the electronic signature characteristic of the fluid medium.
摘要:
Telechelic polyolefin of formula(I) and its derivatives: CH2═CH—(CH2)p-A-Z (I) wherein: A represents a (co)polymer comprising at least 95 mol % of (CH2—CH2) units; Z is selected from the group comprising halogens, thiols and their derivatives, azides, amines, alcohols, the carboxylic acid function, isocyanates, silanes, phosphorous derivatives, dithioesters, dithiocarbamates, dithiocarbonates, trithiocarbonates, alkoxyamines, the vinyl function, dienes, and the group -A-(CH2)p—CH═CH2; p is a whole number between 1 and 20, most advantageously between 6 and 9.
摘要:
The present invention relates to the cosmetic use by the topical route of a Tapirira guianensis extract, for stimulating the expression of perlecan and/or dystroglycan and/or VE-cadherin and/or claudin-5, in particular in the extracellular matrix and/or in the epithelial basement membrane, especially the dermoepidermal junction.It also relates to a cosmetic care method comprising the application, to at least one concerned area of healthy skin and/or healthy mucous membrane and/or healthy scalp, of a Tapirire guianensis extract or of a cosmetic composition comprising such an extract for stimulating the expression of perlecan and/or dystroglycan and/or VE-cadherin and/or claudin-5, in particular in the extracellular matrix and/or in the epithelial basement membrane, especially the dermoepidermal junction.In addition, it relates to a cosmetic composition comprising a Tapirira guianensis extract and a topically acceptable cosmetic excipient.Finally, it relates to a Tapirira guianensis extract or a dermatological composition comprising a Tapirira guianensis extract and a dermatologically acceptable excipient for use by the topical route in the treatment and/or prevention of rosacea, telangiectasia and/or pathologies of the oral and/or ocular mucous membranes.
摘要:
A method for depositing a photocatalytic coating on a support, the method having the steps: a) providing an aqueous and/or alcoholic suspension of nanoparticles of a semiconducting material, b) providing a sol in an aqueous and/or alcoholic solution of a hydrolyzed organosilane, c) mixing the suspension and the sol and proceeding with deposition of the obtained mixture on the support to be covered, d) performing a drying operation, e) and optionally producing an illumination of the obtained coating after drying at one wavelength at least causing activation of the semiconducting material, so as to remove at least 3% of the organic groups initially present in the coating and bound to the silicon atoms through a Si—C bond; as well as coatings with photocatalytic properties, materials, notably textiles, covered with such a coating and the use of such coatings and materials for photocatalysis.
摘要:
A method for preparing an aqueous suspension of nanocapsules comprising an oily core surrounded by a polymeric shell, comprises mixing first and second phases, wherein the first oily phase comprises a hydrophobic polymer, an oil or a mixture of oils, at least one active ingredient, and a surfactant TA1. The oily phase is brought to a temperature T1 higher than the melting point of the hydrophobic polymer, the hydrophobic polymer being miscible, at this temperature T1, with the mixture of the surfactant TA1 and the oil or mixture of oils, and the active ingredient being miscible, soluble or solubilized in the mixture of the surfactant TA1 and the oil or mixture of oils. The second polar phase comprises a hydrophilic polymer in the form of a hydrogel in an aqueous solution containing a surfactant TA2, to form the nanocapsules in an aqueous suspension.
摘要:
A device for characterizing a fluid medium with the help of a photoelectric transducer comprises at least one semiconductor substrate possessing at least one space charge zone and presenting a reception surface for receiving the fluid medium in order to constitute an interface between the substrate and the fluid medium, a production system for producing a spot light beam that is amplitude-modulated and that lights at least one zone of the interface through the fluid medium, a measurement system for measuring values of a photoelectric magnitude delivered while performing the lighting so as to create a matrix of values of the photoelectric magnitude, and a processor system for processing values of the photoelectric magnitude delivered by the measurement system and adapted to use the matrix to determine an electronic signature characteristic of the fluid medium.