Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique

Biomerieux, Inc.

Université Grenoble Alpes

Pierre Marcoux

Mathieu Dupoy

Thomas Bordy

Pierre Joly

Marc Zelsmann

Emmanuel Picard

Cedric Allier

Thu-Hoa Tran-Thi

Gilles Marchand

Cédric Allier

Emmanuelle Schultz

Frédéric Mallard

Sophie Morel

Armelle Novelli-Rousseau

Maxime Gougis

Tarek Fathallah

Alexis Maire

Marjorie Vrignaud

Prisca Perlemoine

Rémi Toutain

Valentin Genuer

Laure-Hélène Guillemot

Raphaël Mathey

Method for determining the sensitivity of a bacterial strain of interest to a viral strain of bacteriophages, the method comprising:

Method for determining the sensitivity of a bacterial strain to a bacteriophage

A method for obtaining an image of a sample includes illuminating the sample using a light source; acquiring, using an image sensor, a first image of the sample, the image being formed in the detection plane, the first image being representative of an exposure light wave propagating, from the sample, to the image sensor, along a first optical path; modifying an optical refractive index, between the image sensor and the sample; acquiring a second image of the sample, the image being representative of the exposure light wave along a second optical path; and implementing an iterative algorithm that combines the first and second images so as to obtain an image of the sample.

Method of forming a complex image of a sample

A method for observation of a sample, the sample comprising microorganisms immersed in a nontransparent culture medium, the culture medium being favorable to the development of the microorganisms, and the sample being arranged between a light source and an image sensor, includes illuminating the sample with the light source, the light source emitting light propagating along an axis of propagation; acquiring an image of the sample by the image sensor; and, from the image acquired, characterizing the microorganisms. Light travels along the microorganisms through the culture medium to the sensor.

Method for early observation of colonies of microorganisms

The invention relates to a method for observing a sample (), the sample () comprising a set of organisms (), a solid substrate () supporting the set of organisms (). The method being characterized in that the method includes steps for illuminating at least one portion of the sample () with a light beam, for acquiring a first diffraction pattern corresponding to an image of waves from the diffraction of the light beam by at least one portion of the set of organisms (), for acquiring a second diffraction pattern corresponding to an image of waves from the diffraction of the light beam by at least one portion of the sample (), for comparing the second diffraction pattern with the first diffraction pattern, for determining at least one characteristic relating to the set of organisms () from the result of the comparison step.

Method for observing organisms and associated system

The invention relates to a retroreflector able to be placed in contact with an environment, comprising, by way of constituent material, a material enabling a parameter of said environment to be picked up, said material modifying the optical transmission properties of the retroreflector when said parameter is present, said retroreflector being able to receive an incident light beam via a first face and to reemit a light beam via said first face.

Retroreflector providing the functions of retroreflection and pickup of a parameter of the environment

A system is provided for observing objects on a substrate which includes a light source that emits polarized light rectilinearly along a first direction, a holder that receives said substrate having a surface and includes objects, wherein at least one of the holder or the substrate are translucent or opaque, a detector that collects the backscattered light from the interaction between the light emitting by the light source and the objects, a polarization splitter and a quarter-wave plate wherein the polarization splitter and the quarter-wave plate are arranged so that the polarization splitter directs light towards the substrate through the quarter-wave plate, and wherein the light forms a beam and the system modifies the size of the beam. The system thus allows one to observe objects on a non-transparent substrate.

System for observing objects

Porous sol-gel material essentially consisting of units of one or more first polyalkoxysilanes chosen from the following compounds: (chloromethyl)triethoxysilane; 1,3-dimethyltetramethoxydisiloxane; ethyltrimethoxysilane; triethoxy(ethyl)silane; triethoxymethylsilane; triethoxy(vinyl)silane; trimethoxymethylsilane; trimethoxy(vinyl)silane; tetraethoxysilane or tetramethoxysilane (TMOS) and of units of one or more second polyalkoxysilanes chosen from the following compounds: (N-(3-(trimethoxysilyl)propyl)ethylenediamine; 3-aminopropyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxysilane/second polyalkoxysilane molar ratio of 1/0.01 to 1/1, optionally comprising a probe molecule, method of preparation and applications in the trapping of monocyclic aromatic hydrocarbons and other pollutants or in their detection.

Method for classifying the presence or absence of a microorganism in a biological medium

A method for detecting an analyte in a bodily fluid includes placing the detector in contact with at least one metabolite resulting from the metabolism or degradation of the analyte. The contact between the detector and the metabolite produces an optically detectable signal. The detection method includes the detection of the metabolite only in gas form, said metabolite in gas form coming from the evaporation of at least a part of said metabolite. The detection is also carried out without contact between the bodily fluid and the detector. A dressing for implementing the detection method is also described.

Method for detecting analyte in a bodily fluid, and dressing for implementing such a method

A method for observing a sample is provided. The method includes the steps of: a) providing a volume (G, V) of a substantially transparent medium having a first refractive index (n) and having a first surface (S) that is convex, rounded, or faceted, and a second substantially planar surface (S), the first surface separating the volume from a surrounding medium (MA) having a second refractive index (n) that is lower than the first index, the sample to be observed being contained inside the volume or being deposited on the first surface; b) observing the sample through the second substantially planar surface; and c) determining the presence of a substance or an object in the sample by detection during step b), a ring of light that correlates with the volume.

Method for observing a sample

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Saint Egreve, France

Pierre Marcoux