Abstract: A turbomachine sealing ring has an axis of revolution and includes an annular support, an annular coating made of abradable material which is carried by the support, and an annular thermal protection plate which is carried by the support. The ring is divided into sectors and has a plurality of ring sectors disposed circumferentially next to one another about the axis. Each ring sector has a support sector, a coating sector, and a plate sector. Each plate sector ling includes a flat tab that is pressed against a face of the corresponding support sector and is fixed to this face by brazing. The tab is inserted into a through-slot in the support sector in order to improve its integrity in operation.

Abstract: A radiation detector includes a stack of layers along a direction Z, the stack comprising: an absorbent layer, a first contact layer, an assembly consisting of at least one intermediate layer, referred to as an intermediate assembly, an upper layer, the first contact layer and the upper layer having a plurality of detection zones and separation zones, a detection zone corresponding to a pixel of the detector, a passivation layer made from a dielectric material, arranged on the upper layer and having openings at the level of the detection zones of the upper layer, the semiconductor layers of the stack being compounds based on elements of groups IIIA and VA of the periodic table of the elements, the second material comprising the VA element antimony and the third material not comprising the VA element antimony.

Abstract: Portable equipment for optimization of a visual inspection and expert appraisal of a structure, particularly in civil engineering, includes an on-board database of visual references for decay in different states of advancement and computing elements for calculation, by interpolation of data from a database of results from predictive physical simulations of materials and structures, of indicators of deterioration and key aging parameters to represent several possible visual appearances of an element of the structure in different stages of the life thereof from reference images from the database of visual references and categorization of the state of the structure by comparison with the actual appearance.

Abstract: The invention is directed to a spin-polarized electron injector using a semiconductor tip, in which tip the injected electrons are photocreated by a circularly polarized light excitation incident on the rear of the tip. This tip is supported by a transparent lever or cantilever and undergoes a surface treatment for the purpose of removing the surface oxide layer, to prevent said layer from reforming and to improve the proportion of injected electrons.

Abstract: A method for identifying the failure risks of a confinement building, in particular a confinement building made of concrete for stocking or storing a product, includes the following steps: from data concerning the building and/or the product, determining a planned theoretical behaviour of the building during the filling phase of the building with the product to be stored; determining a real behaviour of the building during the filling phase of the building with the product; and determining the failure risks by comparing the theoretical and real behaviours. The method of the invention can also be applied to an emptying phase of the confinement building.

Abstract: A method and system for monitoring the performance of a pipe containing a pressurised fluid. The pipe is made up of at least one current zone and singular zones. A predetermined number of singular zones are monitored, in order to obtain circumferential expansion information; and the calculation of the effective stiffness of the pipe and of the measured residual steel section of the pipe, using this circumferential expansion information. The pipe is dynamically monitored, in order to obtain information relating to the natural vibration frequencies and modes thereof. The information thus gained indicates whether a maintenance operation need be performed on the pipe.

Abstract: The invention is directed to a spin-polarized electron injector using a semiconductor tip, in which tip the injected electrons are photocreated by a circularly polarized light excitation incident on the rear of the tip. This tip is supported by a transparent lever or cantilever and undergoes a surface treatment for the purpose of removing the surface oxide layer, to prevent said layer from reforming and to improve the proportion of injected electrons.

Abstract: A method of monitoring the performance of a pipe containing a pressurised fluid, the pipe including at least one current zone and singular zones. The method includes: the static monitoring of a pre-determined number of singular zones, in order to obtain circumferential dilatation information; and the calculation of the effective stiffness k(ti) of the pipe and of the measured residual steel section (As(ti) of same, using the above-mentioned circumferential dilatation information. The method can also include the dynamic monitoring of the pipe, in order to obtain information relating to the natural vibration frequencies and modes thereof.

Abstract: Portable equipment for optimization of a visual inspection and expert appraisal of a structure, particularly in civil engineering, includes an on-board database of visual references for decay in different states of advancement and computing elements for calculation, by interpolation of data from a database of results from predictive physical simulations of materials and structures, of indicators of deterioration and key aging parameters to represent several possible visual appearances of an element of the structure in different stages of the life thereof from reference images from the database of visual references and categorization of the state of the structure by comparison with the actual appearance.

Abstract: The disclosure relates to the field of monocrystalline thin layers deposited on a substrate having an identical or a different nature, from a vapor phase. On the substrate made of monocrystalline material A, a cavity is built, determined by one face of the substrate and one face of a layer made of a material D in such a way that there can be neither nucleation nor growth on the faces exposed to the vapor phase. The growth is done from a seed made of monocrystalline material B located between two faces of the substrate and of the layer. The seed made of monocrystalline material B may be of a nature different from that of the substrate (for example, substrate=silicon and material B=GaAs) and is made, for example, by MBE or MOCVD. The material C to be made to grow is different from the material B of the seed. The material C is, for example, InP and the growth is done by VPE.

Abstract: A method according to which a layer of a semiconductor material is made on a substrate by growth in a confinement space defined by this substrate and by a confinement layer, this growth being achieved from a seed. The cross-section of the seed, substantially perpendicular to the general direction of growth, possesses a thick central part framed by two thinned lateral parts. The confinement space has the same cross-section as the seed.