Abstract:
The present invention relates to a rubber-based product, having at least one buffer zone to trap oxygen external to said product in order to protect at least one sensitive zone of said product from oxidation, said buffer zone comprising a composition containing at least one elastomer and at least one iron (III) salt selected from iron (III) acetylacetonate and an iron (III) salt of a carboxylic acid having the formula Fe(CnH2nO2)3 in which n is between 13 and 23. This product is produced by incorporating, by mechanical working, said iron (III) salt into the composition in order to obtain said buffer zone. The buffer zone composition is advantageously used in a tire and imparts improved rolling resistance.
Abstract:
A surface plasmon resonance instrument and measuring method, in which a lens collimates light into a light beam, a prism propagates the collimated light beam at a single propagation angle and with internal reflection on a face of the prism, and an analyzer processes the collimated light beam from the prism. The face of the prism is configured to receive a surface plasmon resonance sensor and at least the first lens and the prism are aligned on a single optical axis.
Abstract:
A method of managing a centralized parking payment system (2), the system (2) including at least one pay and display machine (6) and a payment centralization server (4), the or each pay and display machine (6) permitting payment for parking spaces situated in a corresponding payment zone (44) and being capable of creating payment data for the parking spaces and of recording them in a payment transactions file, and each pay and display machine (6) communicating via a first connection (12) with the centralization server (4), is characterized in that it includes a nominal operating mode in which the or each pay and display machine (6) transmits the transaction file only when one of the transmission conditions, apart from the simple creation of payment data, is verified, in order to reduce its energy consumption.
Abstract:
Surface active sensors comprising imprinted functional polymer matrices tailor made to detect specific chemical species of interest, and a label free, surface initiated molecular imprinting technology for applications in surface active sensors are provided.
Abstract:
A method of coating an SPR biosensor specific for an analyte to reduce protein fouling, the method has the steps of providing an SPR biosensor, providing a solution of 11-mercaptoundecanol; incubating the SPR biosensor in the 11-mercaptoundecanol solution to form a self-assembling monolayer (SAM); incubating the SPR with SAM in a solution of epichlorohydrin and diglyme; next incubating the SPR in ethanolamine; preparing a solution of EDCNHS and a biocompatible polymer; incubating the SPR from ethanolamine in the EDC/NHS/polymer solution; providing a ligand specific for the analyte in a solution; incubating the polymer-coated SPR in the ligand solution to permit the ligand to react with the polymer-coated SPR; washing the ligand-coated SPR to remove unreacted ligand, thereby providing an SPR capable of reacting with the analyte. Another method replaces the solution for the SAM layer with a solution of MHA or NHS-MHA with HT, and attaches the ligand to the resulting SAM layer.
Abstract:
A device for connecting optical components of a fiber optic probe and a jumper in a Surface Plasmon Resonator (SPR) has two high-pressure-liquid-chromatography (HPLC) polyetheretherketone (PEEK) connectors, one containing the optical fibers from a probe and the other containing optical fibers which link to a detector and a light source. A method of joining a probe's distal end to a jumper, with at least two fibers or a multimode fiber connected to a light source and to a detection apparatus, has the steps of covering the distal end of the probe with a plastic sleeve, placing the sleeved distal end into a PEEK connector, trimming the distal end of the probe to be even with the edge of the PEEK connection, and connecting the PEEK connector with the jumper.
Abstract:
The present invention provides a rubber composition which when vulcanized may be used to form a safety support intended to be mounted on a wheel rim within a tire. The invention also is directed to such a support, capable of supporting a tread of the tire in the event of a drop in inflation pressure, and to a mounted assembly comprising this support. A rubber composition according to the invention comprises (phr: parts by weight per 100 parts of diene elastomer(s)): (a) a diene elastomer, (b) particles of an α-olefinic thermoplastic polymer having a melting point greater than or equal to 150° C., in an amount of 5 to 30 parts by weight per 100 parts diene elastomer (phr), wherein the mean size by weight of the particles is between 50 μm and 500 μm, (c) greater than 60 phr of reinforcing filler, and (d) from 3 to 8 phr of sulphur.
Abstract:
A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal. For example, in an embodiment in which two descriptions are generated for each portion of the signal, a first description for a current one of the portions of the signal is placed in a current packet along with a second one of the descriptions for a previous portion of the signal, and the frequency hopping rate of the modulator is doubled relative to a hopping rate used for single description transmission.
Abstract:
The present invention provides a rubber composition which when vulcanized may be used to form a safety support intended to be mounted on a wheel rim within a tire. The invention also is directed to such a support, capable of supporting a tread of the tire in the event of a drop in inflation pressure, and to a mounted assembly comprising this support. A rubber composition according to the invention comprises (phr: parts by weight per 100 parts of diene elastomer(s)): —natural rubber or synthetic polyisoprene in a quantity of greater than or equal to 60 phr, more than 60 phr of a reinforcing white filler, and from 3 to 8 phr of sulphur.
Abstract:
A device for connecting optical components of a fiber optic probe and a jumper in a Surface Plasmon Resonator (SPR) has two high-pressure-liquid-chromatography (HPLC) polyetheretherketone (PEEK) connectors, one containing the optical fibers from a probe and the other containing optical fibers which link to a detector and a light source. A method of joining a probe's distal end to a jumper, with at least two fibers or a multimode fiber connected to a light source and to a detection apparatus, has the steps of covering the distal end of the probe with a plastic sleeve, placing the sleeved distal end into a PEEK connector, trimming the distal end of the probe to be even with the edge of the PEEK connection, and connecting the PEEK connector with the jumper.