Abstract: A process for purifying an olefinic feedstock containing olefins with 4 carbon atoms and impurities including isobutanal, ethanol and acetone, the process including a pre-treatment containing at least one step of eliminating the ethanol and the water present in the olefinic feedstock and a step of simultaneously eliminating the isobutanal and the acetone, by passing the feedstock from the pre-treatment over at least one fixed bed of at least one adsorbent containing at least one material with a zeolite framework, the material with a zeolite framework being chosen from zeolites, AIPOs, SAPOs and mixtures thereof; the step of simultaneously eliminating the isobutanal and the acetone being carried out at a temperature of between 0 and 200° C., at a pressure of 0.1 to 10 MPa and with an hourly space velocity of the feedstock over the fixed bed of 0.1 to 10 h?1.

Abstract: A cross contains a sacred utensil or a wishing note and includes a transverse frame parallel with the ground, a first longitudinal frame perpendicular to the center part of the transverse frame, a first containing portion formed at the inner center of the first longitudinal frame from the lower surface of the first longitudinal frame toward the transverse and a first coupling member containing portion formed from the lower surface of the first longitudinal frame toward the outside of the first containing portion. A first frame magnet is contained in the first coupling member containing portion. A second longitudinal frame makes surface contact with the lower surface of the first longitudinal frame to be coupled thereto. A contained object support rack at the center part of the upper surface of the second longitudinal frame is positioned to correspond to the first containing portion of the first longitudinal frame.

Abstract: A phytosanitary composition including at least one paraffinic hydrocarbon fraction that includes isoparaffins, normal paraffins and naphthenes, wherein the content by weight of naphthenes ranges from 10 to 50% in relation to the total weight of the composition, and the weight ratio of the normal paraffins to the isoparaffins is greater than or equal to 0.30, in a carrier suitable for the phytosanitary treatment of plants.

Abstract: The invention relates to a process for dehydrating alcohols to olefins, comprising a reaction step and a catalyst selectivation step.

Abstract: The method acquiring a ground seismic dataset over a region of interest by defining a geometry of acquisition of the seismic dataset specifying a location of a plurality of seismic sources and a location of a plurality of seismic receivers, inducing a seismic signal with at least one first seismic source of the plurality of seismic sources, and measuring the corresponding ground vibrations induced by the at least one first seismic source with the plurality of seismic receivers to obtain a first seismic dataset. Then processing the first seismic dataset and modifying the geometry of acquisition of the first seismic dataset by specifying a location of at least an additional seismic source and/or a location of at least an additional seismic receiver, based on analyzing the processed first seismic dataset.

Abstract: A method for isomeris ng dehydration in the presence of a specific catalyst, to produce at least one alkene, carried out on a feedstock containing a non-linear primary monoalcohol, where the catalyst includes a zeolite having a series of 8MR channels and a binder having certain pore volume, which catalyst is multilobe-shaped and has characteristics including certain average mesopore volume Vm, and mesopores having a certain diameter, an average certain macropore volume VM, the macropores having a certain diameter, and certain average micropore volume V?, the micropores having a certain diameter, and the catalyst has a certain exposed geometric area.

Abstract: The present invention relates to a method for simulating karstification phenomena in karst zones, especially in insular regions. This method defines a geological model of the karst zone and simulates the movement of a particle in the geological model, this movement being probabilistic. This method furthermore modifies the geological parameter depending on the movement of the particle and on the aggressiveness of the particle. The aggressiveness of the particle depends on the coordinates of the particle.

Abstract: The invention relates to a gas injection element (10) for a system for distributing as gas inside a chamber of a fluid catalytic cracking unit. This injection element comprises a passage (14) passing right through it in a longitudinal direction (X), and —a metallic internal element (20) of which an internal surface (22) defines part of the through-passage (14) passing through in a longitudinal direction (X), —a hollow metal sleeve (30) accepting one end (20a) of the internal element (20) and attached thereto, —a hollow metal support (40) having an internal surface (42) defining the remainder of the through-passage passing through in the longitudinal direction (X), the said sleeve also being attached to one end of the support (40).

Abstract: The present disclosure relates to the use of a switch for the production of heterologous non-catabolic compounds in microbial host cells. In one aspect, provided herein are genetically modified microorganisms that produce non-catabolic compounds more stably when serially cultured under aerobic conditions followed by microaerobic conditions, and methods of producing non-catabolic compounds by culturing the genetically modified microbes under such culture conditions. In another aspect, provided herein are genetically modified microorganisms that produce non-catabolic compounds more stably when serially cultured in the presence of maltose followed by the reduction or absence of maltose, and methods of producing non-catabolic compounds by culturing the genetically modified microbes under such culture conditions.

Abstract: A process for dearomatization of a petroleum cut produces a dearomatized hydrocarbon-containing fluid with a sulphur content less than or equal to 5 ppm and a content of aromatic compounds less than or equal to 300 ppm, the hydrocarbon-containing fluid has a boiling point between 100 and 400° C. according to the standard ASTM D-86 and a distillation range defined by the difference between the Initial Boiling Point (IBP) and the Final Boiling Point (FBP) determined by the standard ASTM D-86 not exceeding 80° C. The process includes at least one dearomatization cycle utilizing a mixture of the petroleum cut with one or more inert and light diluents having a distillation range not exceeding 80° C.

Abstract: A bitumen/polymer composition containing at least one elastomer of the heat-crosslinkable S-B-S type, where S is a styrene or other vinylaromatic polymer block, and B is a polybutadiene block, the composition including an adjuvant of the olefin polymer type and having improved mechanical properties. Also, the use of the compositions in the fields of road applications such as hot mixes; warm mixes; cold mixes, for example cold-cast mixes or emulsion gravel; or surface dressings, for example fluxed bitumen or emulsions; and in the fields of industrial applications, for example in the production of inside and outside coatings.

Abstract: A method for adjusting, to a pre-determined value, the level of a mineral deposition or corrosion inhibitor injected into a gas or oil well. Using of the time-resolved fluorescence method for detecting and quantifying a mineral deposition or corrosion inhibitor in a fluid from an oil or gas production well.

Abstract: A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a conductive foil bonded to the semiconductor region.

Abstract: A process for the preparation of olefin by alcohol dehydration, for making polymer, fuel or fuel additive and use of olefin obtainable by said process for making polymer, fuel or fuel additive. Preferred olefin is C5 olefin obtained from dehydration of an alcohol or alcohol mixture, preferably from fusel oil.

Abstract: The present invention relates to a fuel composition comprising:—from 35% to 75% by weight of cyclopentane,—from 10% to 25% by weight of one or more aromatic hydrocarbon(s), and—up to 55% by weight of one or more branched alkane(s) chosen from 2-methylbutane and trimethylpentanes, with a weight ratio of the cyclopentane content to the aromatic hydrocarbon content greater than or equal to 2. The invention also relates to the use of such a composition for supplying a spark ignition engine, in particular for increasing the engine power and/or for reducing the specific fuel consumption of the engine and/or for increasing the octane number (RON).

Abstract: An offshore platform for use in combination with an offshore rig comprises an upper deck defining an upper deck aperture which is alignable with a rig aperture of the offshore rig, when said offshore rig extends over the upper deck, to permit objects to extend between the offshore rig and through the upper deck. The offshore platform further includes a sheath arrangement aligned with the upper deck aperture and extending upwardly relative to the upper deck to be alignable with the rig aperture, wherein the sheath arrangement defines a confinement zone for confining objects which pass downwardly from the offshore rig through the rig aperture.

Abstract: A composite strip which extends in a main direction between first and second ends and which comprises a main strip comprising first fibres embedded in a matrix. The first fibres are made of carbon, an electrically conducting material, and the matrix is made up of at least one polymer. The composite strip further comprises a junction layer formed of an electrically conducting junction material. The junction layer is placed on the main strip.

Abstract: The invention concerns a method for evaluating a geophysical survey acquisition geometry over a region of interest. The method comprises determining a location of a plurality of base camps in respect of a determined minimal surface density of base camps, determining a first set of locations of a plurality of receivers in respect of a determined minimal surface density of receivers, generating a first synthetic geophysical dataset based on the first geophysical survey acquisition geometry, processing the first synthetic geophysical dataset for obtaining a first simulated image of the subsurface of the region of interest using a geophysical processing algorithm and an a priori subsurface model, and calculating a first objective function dependent of at least a first quality index of the first simulated image of the subsurface of the region of interest.

Abstract: A process for preparing a hydrocarbon fluid includes a step of oligomerising an initial hydrocarbon composition which contains, in relation to the total weight of said initial hydrocarbon composition, at least 2% by weight of 3-methyl-but-1-ene, at least 5% by weight of 2-methyl-but-2-ene and at least 5% by weight of 2-methyl-but-1-ene.