Abstract: The present invention relates to a catalyst composition comprising a modified crystalline aluminosilicate of the Framework Type FER having Si/Al framework molar ratio greater than 20 characterized in that in said modified crystalline aluminosilicate the ratio between the strong acid sites and the weak acid sites, S/W, is lower than 1.0 and having the extra framework aluminum (EFAL) content lowered to less than 10 wt % preferably 5 wt % even more preferably less than 2 wt % measured by 27 Al MAS NMR. The present invention further relates to a process for producing olefins from alcohols in presence of said catalyst composition.

Abstract: This drive system for a motor vehicle includes a top end and a bottom end that are coupled together, a kinematic drive chain, a compressor, a main lubrication system, that includes a main circuit and a main pump, which supplies at least the bottom end with a main lubricant via the main circuit, and a secondary lubrication system, that includes at least one secondary circuit separated from the main circuit and at least one secondary pump separate from the main pump, the secondary pump supplying the top end and/or the compressor with a secondary lubricant via the secondary circuit. The secondary lubrication system includes at least one secondary actuator mechanically separate from the kinematic drive chain and that drives the secondary pump to supply the top end and/or the compressor with the secondary lubricant.

Abstract: The invention concerns additive compositions obtained by mixing at least two thermoassociative and exchangeable compounds and at least one boronic ester compound that enables the association of these two copolymers to be controlled; a lubricating composition obtained by mixing at least one lubricating base oil, at least two thermoassociative and exchangeable compounds, and at least one boronic ester compound that enables the association of these two copolymers to be controlled; a method for adjusting the viscosity of a lubricating composition obtained by mixing at least one lubricating base oil and at least two thermoassociative and exchangeable compounds; and the use of a boronic ester compound to adjust the viscosity of a lubricating composition.

Abstract: The invention relates to the use of a binder, in divided form, that is solid at ambient temperature, including at least one oil selected from a hydrocarbon oil of petroleum or synthetic origin and mixtures of same, and at least one chemical organogelator additive, for the production of asphalt mixes from recycled asphalt mix aggregates. The solid-at-ambient-temperature binder can be used for the production of asphalt mixes obtained from recycled asphalt mix aggregates, said binder including at least one oil selected from a hydrocarbon oil of petroleum or synthetic origin and mixtures of same, at least one pitch and at least one chemical organogelator additive.

Abstract: The present disclosure relates to novel compositions of additives that result from mixing at least two thermoassociative and exchangeable copolymers and at least one compound for controlling the association of these two copolymers. A lubricant composition results from mixing at least one lubricating base oil, at least two thermoassociative and exchangeable copolymers and at least one compound for controlling the association of these two copolymers. The present disclosure also relates to a process for modulating the viscosity of a lubricant composition that results from mixing at least one lubricating base oil, at least two thermoassociative and exchangeable copolymers; as well as the use of a diol compound for modulating the viscosity of a lubricant composition.

Abstract: Compositions resulting from the mixing of at least one copolymer A1, resulting from the copolymerization of at least one monomer functionalized by diol functions with at least one styrenic monomer, and at least one compound A2 comprising at least two boronic ester functions. They have very varied rheological properties depending on the proportion of compounds A1 and A2 used. Composition resulting from the mixing of at least one lubricating oil with such a composition of associative and exchangeable polymers and use of this composition for lubricating a mechanical part.

Abstract: The present invention relates to a polypropylene composition comprising: a first polypropylene homopolymer or random copolymer (PPR1) having a comonomer content lower than the comonomer content of the second polypropylene, a second polypropylene (PPR2) which is a random copolymer of propylene and of the comonomer; said comonomer being an alpha-olefin different from propylene, the melting temperature of the polypropylene composition (Tm(PPR)) being defined as Tm(PPR)>165?6.9*[total comonomer content]?8.4*[comonomer content of the first polypropylene], the difference between the melting temperature and the crystallization temperature of the polypropylene composition ranges from 27 and 33, and a xylene soluble fraction (XS) at 23° C. of not more than 1.5 wt. %. The present invention also relates to a process for the preparation of said polypropylene composition. The present invention further relates to the use of said polypropylene composition for producing films or moulded articles.

Abstract: The present invention relates to the determination of damage to a geological model comprising a plurality of nodes and a plurality of links each linking two nodes from the plurality of nodes. For each link from the plurality of links, the determination of damage comprises determining a force applied to said link. If the force is greater than a force threshold value, for each node of the two nodes from the plurality of nodes linked together by said link, the determination of damage comprises creating a contact sphere associated with said node, and eliminating the link. The determination of damage comprises determining a plurality of contacts between spheres comprising at least one contact between spheres, each contact between spheres associating two contact spheres from the plurality of contact spheres.

Abstract: The invention relates to a method and to a plant for chemical looping oxidation-reduction combustion (CLC) of a gaseous hydrocarbon feed, for example natural gas essentially containing methane. According to the invention, catalytic steam reforming of the feed is performed between two successive feed combustion steps on contact with an oxidation-reduction active mass in form of particles. The reforming catalyst is arranged in a fixed bed in an intermediate reforming zone (130) between the two reduction zones (120, 140) where the two combustion steps are conducted.

Abstract: A digital logic device is disclosed that includes registers, SRAM, DRAM, and a processor configured to store in the registers an initial portion of a first response data to a command, and store in the SRAM the first response data. The processor is further configured to store in a lookup table the memory location and size of the first response data in the SRAM, store in the DRAM additional response data, and store in the lookup table the memory location and size of the additional response data in the DRAM. The processor is configured to receive the command from a host device, retrieve the first response data from the registers or the SRAM, and send the first response data to the host. If the command includes additional response data, the processor is configured to concurrently retrieve the additional response data from DRAM and send the additional response data to the host.

Abstract: A process for purifying an olefin-containing hydrocarbon feedstock comprising the steps of: (a) passing the said hydrocarbon feedstock in the presence of hydrogen over a first catalyst bed material comprising nickel deposited on a support material wherein said nickel is present as both nickel oxide and metallic nickel (b) recovering the feedstock having a substantially reduced acetylenics (in particular methylacetylene) and allenes (in particular propadiene) content.

Abstract: A composition including at least: a binder base chosen from: a bitumen base, a pitch base, a clear binder, or a mixture of one or more of these binder bases, an acid compound of general formula (I): R—(COOH)z (I). an amide compound of general formula (II): R?—(NH)nCONH—(X)m—(NHCO)p(NH)n—R? (II) the compounds (I) and (II) being present in a weight ratio ranging from 10:1 to 1:16, for preparing a mastic asphalt composition. Mastic asphalt compositions and surfacings are thus obtained.

Abstract: A method comprises obtaining a first time series of a first well parameter from the first well and a second time series of a second well parameter from the second well, processing the first time series to obtain a processed first time series, filtering the second time series by removing dynamic variations from the second time series to obtain a filtered second time series representative of static variations of the second time series, and determining a correlation between said processed first time series and said filtered second time series at various time shifts between said processed first time series and said filtered second time series, and determining a maximal correlation coefficient and a time shift at maximal correlation between said processed first time series and said filtered second time series, the maximal correlation coefficient being representative of the connectivity between the first well and the second well.

Abstract: Bitumen which is solid at ambient temperature, in the form of granules including a core made of a first bituminous material and a coating layer made of a second bituminous material, in which: the first bituminous material includes at least one bitumen base and the second bituminous material includes: at least one bitumen base and at least one chemical additive chosen from: an organic compound, a viscosifying compound, a paraffin, a polyphosphoric acid and mixtures thereof; or at least one pitch having a ring-and-ball softening point (RBSP) greater than or equal to 80° C., it being understood that the RBSP is measured according to the EN 1427 standard; or a mixture of these materials.

Abstract: A cylindrical wall (100) for filtering solid particles in a fluid, through which this fluid is likely to circulate, this wall comprising: a perforated cylinder (30) being produced from at least one perforated plate, a grating assembly (110), of generally cylindrical form, intended to be in contact with the solid particles, the grating assembly and the perforated cylinder being concentric, the grating assembly comprising at least one grating element (113), said grating element comprising a plurality of wires (111), means for assembling said at least one grating element so as to form the grating assembly of generally cylindrical form, said assembly means being arranged to ensure a fixing of said at least one grating element on the perforated plate that can be dismantled.

Abstract: An aviation gasoline composition comprising an impure iso-octane fraction, at least one xylene and at least one C4 or C5 alkane, wherein the impure iso-octane fraction in said composition is a fraction comprising at least 90 mol % iso-octane and having a final boiling point of at least 180° C. and is present in the composition in an amount in the range of from 30 to 80 vol. % based on the composition, the composition is substantially free of any lead compounds, the composition has a motor octane number of at least 94 and the composition has a final boiling point of at most 170° C. The composition of the present invention may be made by blending together an impure iso-octane fraction, xylene, at least one C4 or C5 alkane, optionally ethyl tertiary butyl ether, and optionally methylcyclopentadienyl manganese tricarbonyl and may he used in a spark ignition aviation engine, either alone or in combination with methanol or a methanol and water mixture.

Abstract: A process for the production of a hydrocarbon fluid includes the step of catalytically hydrogenating a hydrocarbon cut in presence of both a dearomatization catalyst and a dewaxing catalyst in a single slurry reactor. A hydrocarbon fluid is also disclosed as being obtainable by the process.

Abstract: The invention relates to a plant and to a method for chemical looping oxidation-reduction combustion of a gaseous hydrocarbon feed, for example natural gas essentially containing methane. According to the invention, catalytic pre-reforming of the feed is performed in a pre-reforming zone comprising a fixed reforming catalyst, while benefiting from a heat transfer between the reduction or oxidation zone of the chemical loop and the pre-reforming zone adjoining the reduction or oxidation zone. Pre-reforming zone (130) and oxidation zone (110) or pre-reforming zone (130) and reduction zone (120) are thus thermally integrated within the same reactor (100) while being separated by at least one thermally conductive separation wall (140).

Abstract: The present invention is a process for dehydrating an alcohol to prepare a corresponding olefin, comprising: (a) providing a composition (A) comprising at least an alcohol having at least 2 carbon atoms, optionally water, optionally an inert component, in a dehydration unit, (b) placing the composition (A) into contact with an acidic catalyst in a reaction zone of said dehydration unit at conditions effective to dehydrate at least a portion of the alcohol to make a corresponding olefin, (c) recovering from said dehydration unit an effluent (B) comprising: at least an olefin, water, undesired by-products including aldehydes and light products, optionally unconverted alcohol(s), optionally the inert component, wherein, said composition (A)—providing step (a) comprises adding an effective amount of one or more sulfur containing compound capable to reduce the undesired by-products by comparison with a non introduction of such sulfur containing compound.

Abstract: A protection device (1) shaped like a helmet, apt to be worn on by a health operator during surgery, comprising: —a main body (2) shaped as a helmet shielding the operator's head, which main body (2) is worn on jointly to a lens (200); and—means (3) for forced circulation of air in an internal environment (20) accommodating the operator's head and defined by said main body (2) and by the associated vision element (200), which forced circulation means (3) comprises air inletting means (31) and air suction means (32), the latter apt to cause an evacuation of exhausted air from the environment (20) accommodating the subject's head.