Abstract:
A device for medical imaging by X-ray is provided. More specifically, it relates to the simulation of the deployment of an endoprosthesis in order to assist the surgeon in an endovascular surgical procedure. The invention makes use of a single 2D image in order to determine certain characteristics of a simplified model of the endoprosthesis: 2D positions, and deployment value of the stents; to determine the inherent rotation of at least one stent; then to determine the deployment of a model representing the structure of the stents, initialized on the basis of the preceding steps, in a 3D model of a vascular structure.
Abstract:
A method of controlling a vehicle having wheels provided with tires resting on a surface, the method using a model of the physical behavior of each tire as a function of a sideslip angle (βij) for each tire relative to the surface. The model is obtained by implementing an adaptive algorithm that selectively applies an affABREGEine model (Z1), a DUGOFF model (Z2), or a constant model (Z3).
Abstract:
A field of thermal treatment of ceramic materials is provided, and relates to a method for thermal treatment of a solid ceramic part in a microwave cavity, the direction of the electrical field E being substantially uniform in an empty cavity, comprising the steps that consist of placing, in the cavity, at least one ceramic part surrounded by at least one first susceptor with dimensions, material and arrangement configured to emit infrared radiation, each first susceptor including at least one first main surface, each first main surface being an adjusted surface in which the cone distances are parallel to the electrical field E, and of emitting the microwaves into the cavity.
Abstract:
Production of virus occlusion bodies that occlude virions comprising genomes of different species of baculoviruses that can be used to combat insect pests. A method is presented for the production of occlusion derived virions (ODVs) that simultaneously comprise genomes of different baculovirus species, occluded in a viral occlusion body (OB) with the structural and morphological features characteristic of baculoviruses. Mixed genome ODVs and OBs can be produced by co-infecting insect cells or insect hosts using two or more different baculoviruses species. Co-infection may be achieved by simultaneous inoculation of the different baculoviruses or with a time interval between inoculations, which results in different proportions of each species' genomes in the ODVs and OBs that are produced. The produced OBs can be used either directly for preparing an insecticide, or to infect susceptible insects to produce larger quantities of mixed genome ODVs and OBs, also useful for combating pest insects.
Abstract:
THE MECHANICAL PROPERTIES, PARTICULARLY THE TENSILE STRENGTH, OR ARTICLES COMPRISING A LAYER OF BORON ON A METALLIC, PARTICULARLY TUNGSTEN, CORE ARE SUBSTANTIALLY INPROVED BY A TREATMENT COMPRISING IMMERSION IN AN AQUEOUS ACID BATH CONTAINING HYDROGEN PEROXIDE AND APPLICATION OF A POTENTIAL DIFFERENCE BETWEEN A METALLIC CATHODE AND THE ARTICLE AS ANODE.
Abstract:
A method for training a machine learning system, including: based on at least one image dataset representing at least one portion of the hollow structure, calculating a signed distance field of each portion and calculating at least one geometrical parameter of each portion; generating a deployed in-use representation of the device by computing contact forces between the device and each portion based on the signed distance field and by applying these contact forces to a geometrical representation of the device; and training the machine learning system with each calculated geometrical parameter as an input and the corresponding deployed in-use representation as an associated target output, the obtained trained machine learning system being configured to receive as input at least one geometrical parameter and provide as output the deployed in-use representation of the device.
Abstract:
The invention essentially concerns a method for storing a biogas in a tank, said method comprising the following steps: direct contacting of the biogas with a hydrocarbon of the C3 to C7 family under conditions allowing at least partial liquefaction of the biogas to obtain a biogas-hydrocarbon mixture that is at least partly liquid, and storing (S260) the biogas-hydrocarbon mixture in the tank.
Abstract:
A device for medical imaging by X-ray is provided. More specifically, it relates to the simulation of the deployment of an endoprosthesis in order to assist the surgeon in an endovascular surgical procedure. The invention makes use of a single 2D image in order to determine certain characteristics of a simplified model of the endoprosthesis: 2D positions, and deployment value of the stents; to determine the inherent rotation of at least one stent; then to determine the deployment of a model representing the structure of the stents, initialized on the basis of the preceding steps, in a 3D model of a vascular structure.
Abstract:
A method for detecting a malfunction during a drilling operation is carried out by making use of a drill bit, the method including the following: a) the comparison of a first magnitude (E) representative of the mechanical specific energy (MSE), with a first threshold value (Emax); b) when the first magnitude is greater than the first threshold value, the comparison of the ratio (E/S) between the first magnitude and a second magnitude (S) representative of the drilling force with a second threshold value ((E/S)max); c) the detection of a malfunction in the drilling operation when the ratio (E/S) between the first magnitude (E) and the second magnitude (S) is greater than the second threshold value ((E/S)max). The method provides the ability to ensure more precise detection of a malfunction during drilling operations.
Abstract:
A method for localizing a robot in a localization plane with a bi-dimentional reference with axis x and y comprises: determining by odometry an estimation of coordinates x1 and y1 and orientation θ1 of the robot; determining an estimation θ2 of the orientation of the robot using a virtual compass; determining an estimation θ3 of the orientation of the robot by correlating parts of a reference and a query panorama; determining an estimation x4, y4 of the robot position using Iterative Closest Points; determining standard deviations σ_x1, σ_x2, σ_θ1 σ_θ2, σ_θ3, σ_x4, σ_y4 of the estimations; determining probability distributions G(x1), G(y1), G(θ1), G(θ2), G(θ3), G(x4), G(y4) of each estimation using standard deviations; determining three global distributions GLOB(x), GLOB(y), GLOB(θ) and a global estimation xg, yg of the coordinates of the robot in the localization plane and a global estimation θg of its orientation by applying maximum likelihood to global distributions.