Abstract: The present invention relates to the use of a compound having the following formula (I): in which: A1 represents a divalent alkylene radical comprising from 2 to 20 carbon atoms; A2 represents a divalent alkylene radical comprising from 2 to 20 carbon atoms; A3 is selected from the group consisting of the following divalent radicals: an alkylene comprising from 2 to 600; and an arylene comprising from 6 to 30 carbon atoms; X1, X3 and X4 represent —O— or —NH—; X?2 is selected from the group consisting of: —S—, —CH2— and a bond; and n and m represent an integer ranging from 1 to 1000; for the preparation of additives in a matrix of polyester, polyvinyl chloride, polyurethane, polyamide, poly(alkyl acrylate), poly(alkyl methacrylate), polystyrene or polyolefin.

Abstract: The present invention relates to the field of organic lithium batteries having high energy and power densities. In particular, the present invention relates to an organic lithium battery comprising a positive electrode based on redox organic compounds and a porous separator made of biaxially oriented polypropylene, and to its process of manufacture.

Abstract: The present invention relates to labeled chiral alpha-hydroxy ketoacid derivatives, a process for preparing the derivatives and their use for isotopic labeling of amino acids, in particular, for isotopic labeling of methyl groups of amino acids, and more particularly, for specific isotopic labeling of valine, leucine and isoleucine methyl groups, in proteins and biomolecular assemblies. The invention also concerns a process for analyzing proteins and biomolecular assemblies by NMR spectroscopy including a step of isotopic labeling of amino acids, in particular, valine, leucine and isoleucine, in proteins and biomolecular assemblies to be analyzed by the chiral alpha-hydroxy ketoacid derivatives of the invention. The invention further relates to a kit for isotopic labeling of valine, leucine and isoleucine amino acids, in proteins and biomolecular assemblies including one or more chiral alpha-hydroxy ketoacid derivatives of the invention.

Abstract: The invention relates to a device (200) for taking a sample of a body fluid, such as blood, to be incorporated into a fluid circuit of a perfusion (100) of a patient who has a perfusion catheter (104), said device having a tubular structure (202) for connecting to the fluid circuit of the perfusion, provided with a zone for intubation, during use, of a sampling channel (300) comprising a distal end (301); and a means (203) for holding, during use, in the tubular structure, the part of the sampling channel (300) comprising a distal end (301) in such a way that the distal end (301) is oriented towards the perfusion catheter (104), in the direction of flow (F1) of the perfusion product (102), from a perfusion product reservoir (101) towards the perfusion catheter (104).

Abstract: A monolithic titanium alloy having, in a temperature range (?T) and at atmospheric pressure: an outer peripheral zone of a microstructure having a modulus of elasticity (E1) and possessing superelastic properties in the range (?T), and a core of a microstructure having a modulus of elasticity (E2), and possessing elastic properties in the range (?T); the microstructures and being different from one another, and the modulus of elasticity (E1) being lower than said modulus of elasticity (E2).

Abstract: Antenna system comprising at least two radiating elements, a first line for neutralising electromagnetic coupling between the at least two radiating elements, at least one radiofrequency power supply line for each radiating element and at least one short-circuiting line to a ground plane of the antenna system per radiating element, characterised in that the antenna system further comprises: at least one second line for neutralising electromagnetic coupling between said at least two radiating elements; elements for activating at least some of the neutralisation lines; and in that the activation elements are configured to selectively activate or deactivate at least some of the neutralisation lines, in such a way that depending on the activation/deactivation thereof the neutralisation lines provide a maximum neutralisation of the electromagnetic coupling of the radiating elements for a plurality of different frequencies.

Abstract: A semiconductor heterostructure having: a substrate (SS); a buffer layer (h); a spacer layer (d, e, f); a barrier layer (b, c); and which may also include a cover layer (a) is provided. The barrier layer is doped (DS); and the barrier and spacer layers are made of one or more semiconductors having wider bandgaps than the one or more materials forming the buffer layer, the heterostructure being characterized in that: the barrier layer comprises a first barrier sublayer (c) in contact with the spacer layer, and a second barrier sublayer (b), distant from the spacer layer; and in that the second barrier sublayer has a wider bandgap than the first barrier sublayer. The invention also relates to a HEMT transistor produced using such a heterostructure and to the use of such a transistor at cryogenic temperatures.

Abstract: This invention relates to an electronic system including a radiative electromagnetic emitter for emitting an activation signal including sequentially an energy supply signal followed by an identification signal, the power of the energy supply signal being at least ten times greater than the power of the identification signal, further including an interface connected to an energy supply source; an electric load; a circuit for deactivating a placing of electric load on standby, including: a receiver including a reception interface, a rectifier configured to generate a DC activation voltage on the basis of an activation signal, a switch configured to selectively connect/disconnect to the load from the energy supply, an identification circuit configured to extract an identifier of the activation signal and configured to apply the activation voltage as closure control signal for turning off the switch if a match of the identifier is determined.

Abstract: The present invention relates to thiazolidinedione derivatives, to the processes for preparing same and to the therapeutic use thereof for preventing or treating cancer, and more specifically breast cancer. These compounds are of formula (I) and exhibit, at a concentration of 100 ?M, a hepatocyte viability preferably greater than 60%, preferably greater than 80% and more preferentially greater than 85%.

Abstract: The present invention relates to a method for measuring the angular position of a contrasting edge of an object having a luminance transition zone which is substantially rectilinear in a given direction and separates two regions of different luminances. This method comprises the functional steps of: —carrying out, in a transverse direction different from the given direction, an amplitude modulation of the signals delivered by a first and a second optical sensor; and —calculating an output signal (Yout(t)) starting from the signals delivered by the first and the second optical sensors (D1, D2) as a function of the angular position of the luminance transition zone. Device and set of devices for measuring the angular position of a contrasting edge and steering aid system for fixation and tracking a target comprising at least one such contrasting edge.

Abstract: The invention concerns a process for preparing a block or comb copolymer comprising at least one hydrophilic portion and at least two hydrophobic portions, by anionic solvent-free polymerization of a prepolymer selected from a polyethylene glycol and a polyvinyl alcohol, and of a lactone or dilactone monomer. The process is carried out in the presence of an alkaline-earth metal hydride, in an inert atmosphere, and the polymerization step is not carried out under vacuum. The invention also concerns copolymers obtained by this process.

Abstract: A method for using ground-penetrating radar to obtain subsurface imaging. The radar comprises resources for transmitting, receiving and processing signals. In one method embodiment, signals are transmitted from a fixed point relative to the subsurface and with the aid of at least two electrical antennae. Signals reflected or backscattered by reflectors or diffusers of the said subsurface are received by way of the electrical antennae and by way of three magnetic antennae. Finally, the reflected or backscattered signals are processed using an algorithm to obtain the imaging of the said subsurface.

Abstract: A scanning ophthalmoscope comprises eye illuminating means comprising a light source block (A), an outward refraction compensator (Ba), scanning means (C) suitable for deflecting a beam produced by the light source block over a raster of lines, and a catoptric ophthalmoscope per se (D) for transmitting the deflected light beam into the eye through the pupil thereof. Light returns along the same path to a partially reflective beam separator plate (L.sub.1), it then passes through a return refraction compensator (Br) followed by a detector (E) and an electronic processing circuit (F). The outward and return paths are kept highly symmetrical. The catoptric ophthalmoscope (D) is essentially constituted by a spherical mirror (M.sub.1). The scanning mirrors (M.sub.3 and M.sub.4) pivot about respective axes which are colinear with the focal axes of the astigmatism which the spherical mirror produces in the image of the spot of a patient's pupil.

Abstract: This method of constructing microwave systems and processing the signal by correlation is applicable notably to tachometric, telemetric, directional and tracking control systems, to the detection of heterogeneousness and discontinuity in materials by using sensors of the direct-contact or contactless type.