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1999 条记录 (耗时 0.049 秒)

    PREPARATION OF NEW ALDEHYDE AND/OR KETONE TRAPS AND FILTERS
    56.
    发明申请
    PREPARATION OF NEW ALDEHYDE AND/OR KETONE TRAPS AND FILTERS 有权

    公开(公告)号：US20230121377A1

    公开(公告)日：2023-04-20

    申请号：US18067120

    申请日：2022-12-16

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS -

    发明人： Thu-Hoa TRAN-THI ,  Ana BORTA ,  Mickael GINEYS ,  Marie-Pierre SOM ,  Frédéric HAMMEL

    IPC分类号： B01D53/02 ,  B01J20/20

    摘要： A method for preparing a nanoporous silica sol-gel matrix containing at least one amine reactant selected from hydroxylamine, methylhydroxylamine, tertbutylhydroxylamine, methoxyamine, tetraethylenepentamine, dicarboxylic acid dihydrazides, particularly adipic acid dihydrazide, and the salts thereof, said method including the following steps: a) synthesising a gel from tetramethoxysilane or from a mixture of tetramethoxysilane and another organosilicon precursor selected from among phenyltrimethoxysilane, phenyltriethoxysilane, a fluoroalkyltrimethoxysilane, a fluoroalkyltriethoxysilane, a chloroalkylmethoxysilane, a chloroalkylethoxysilane, an alkyltrimethoxysilane, an alkyltriethoxysilane, an aminopropyltriethoxysilane and the mixtures thereof, the synthesis being performed in an aqueous medium at a temperature ranging from 10 to 70° C. in the presence of at least one amine reactant selected from among hydroxylamine, methylhydroxylamine, tertbutylhydroxylamine, methoxyamine, dicarboxylic acid dihydrazides, particularly adipic acid dihydrazide, and the salts thereof; b) drying the gel obtained during step a) so as to obtain a sol-gel matrix containing at least one amine reactant.

    METHOD FOR CHARACTERISING AN OBJECT BY MEANS OF ULTRASONIC WAVES HAVING DIFFERENT MODES, USING A COM
    58.
    发明申请
    METHOD FOR CHARACTERISING AN OBJECT BY MEANS OF ULTRASONIC WAVES HAVING DIFFERENT MODES, USING A COM 有权

    公开(公告)号：US20230087997A1

    公开(公告)日：2023-03-23

    申请号：US17997153

    申请日：2021-04-26

    申请人： SORBONNE UNIVERSITE ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) ,  INSERM (Institut National de la Santé et de la Recherche Médicale)

    发明人： Guillaume RENAUD

    IPC分类号： A61B8/08

    摘要： Disclosed is a method for characterising an object, comprising: emission of ultrasonic waves that enter an object by passing through an external interface, then reflect off an internal interface, then exit the object by passing through the external interface again, the ultrasonic waves comprising first waves having a mode that varies according to a first variation during their propagation in the object, and second waves having a mode that varies according to a second variation during their propagation in the object; reception of echo signals comprising first signals representing echoes of the first waves, and second signals representing echoes of the second waves, construction of a plurality of images showing the object, the plurality of images being constructed from the echo signals, under the assumption that two characteristics of the object are equal to two candidate values, and comprising a first image constructed from the first signals, and a second constructed from the second signals; construction of a composite image from the plurality of images; calculation of a focus metric in the composite image and, depending on the metric, selection or not of the two candidate values as values of the two characteristics. These characteristics can be used, in particular, to estimate a thickness of the object between the two interfaces.