Abstract: A treatment fluid may be suitable for a hydrocarbon fluid extraction well. Such a treatment fluid may include a water-in-oil emulsion. The water-in-oil emulsion may include: an oily continuous phase; and an aqueous discontinuous phase comprising water and a plurality of particles comprising a hydrogel comprising a cationic polymer. The cationic polymer may include, in polymerized form, a monomer with one or more cationic groups. The cationic group may be a —N+—R1R2R3 group, wherein R1, R2, and R3, are independently H or a C1 to C4 alkyl group.

Abstract: A method for the assessment of the dispersing capacity of new and used lubricating compositions, in particular for internal combustion engines, and of additives for lubricating compositions, includes the steps of: providing a homogeneous dispersion of at least one carbonaceous particulate in a composition to be tested, consisting of a lubricating composition or a fraction or component thereof, acquiring at least one micrographic image of a sample of said homogeneous dispersion, deposited on an observation support, and calculating the lacunarity of the acquired image as a parameter representative of the degree of dispersion of the particulate in the composition.

Abstract: Disubstituted fluoroaryloxybenzoheterodiazole compound having general formula (I): Said disubstituted fluoroaryloxybenzoheterodiazole compound having general formula (I) may be advantageously used as a spectrum converter in luminescent solar concentrators (LSCs) capable, in turn, of improving the performance of photovoltaic devices (or solar devices) selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), either on a rigid support, or on a flexible support.

Abstract: A process for producing syngas and olefins including the steps of feeding a catalytic partial oxidation (CPO) reactant mixture (oxygen, first hydrocarbons, steam) to a CPO reactor (CPO catalyst); wherein the CPO reactant mixture reacts, via CPO reaction, in CPO reactor to produce a CPO reactor effluent (H2, CO, CO2, water, unreacted first hydrocarbons).

Abstract: A zipped ion-exchange membrane (Z-IEM) having at least one cation-exchange polyelectrolyte (CEP) crosslinked with at least one anion-exchange polyelectrolyte (AEP), wherein the CEP has a molar fraction of positive charges (x) so that: (i) when x=0.5, the Z-IEM is a completely neutralized ion-exchange membrane; (ii) when x>0.5, the Z-IEM is a cation-conducting ion-exchange membrane; (iii) when x<0.5, the Z-IEM is an anion-conducting ion-exchange membrane.

Abstract: The invention relates to a method for producing syngas by means of solar radiation, in which the reactor of a receiver-reactor is periodically heated via an aperture provided in the same for solar radiation by means of the solar radiation to an upper reduction temperature for a reduction process and subsequently cooled to a lower oxidation temperature for an oxidation process in the presence of an oxidation gas, wherein the sunlight is guided through an absorption chamber onto an absorber configured as a reactor, which includes a reducible/oxidizable material, and wherein a gas that absorbs the black-body radiation of the absorber is guided through the absorption chamber and the absorption chamber is configured so that the back radiation of the absorber through the aperture is essentially absorbed by the gas. Radiation losses caused by back radiation of the black-body radiation exiting the optical aperture are thus avoided in accordance with the invention.

Abstract: There is a process for preparing polycarbonate. The process has the step of copolymerizing an epoxy compound and carbon dioxide (CO2) in the presence of a catalytic system having at least one catalyst selected from complexes of a transition metal having general formula (I): The aforesaid process allows to obtain polycarbonates having a quantity of carbonate bonds in chain greater than 95% or polycarbonate/polyether copolymers having a quantity of ether bonds in chain ranging from 15% to 90%.

Abstract: A generator of acoustic waves for submarine environments has a hollow body that extends along an axis delimited by a first closed end and by a second end that is provided with an acoustic diffuser member. The hollow body has a first cylindrical portion delimited by the first end that houses a first piston and a second cylindrical portion delimited by the second end that houses a second piston in a freely axially sliding manner. The second piston is mechanically free from the first piston and has a face that faces the acoustic diffuser member. An impulsive actuator is configured together with the first piston to move the first piston towards the second piston. An adjustor for a longitudinal motion of the second piston is arranged between the first piston and the second piston.

Abstract: A turbine current generator includes a hollow bearing cylinder to be engaged inside a pipe or a duct for the transit of a fluid, in particular a fluid transit duct deriving from the drilling or exploration of an oil field; a hollow rotating cylinder rotatably and coaxially engaged inside the bearing cylinder and defining a respective transit cylindrical chamber for a fluid. The bearing and rotating cylinders defining at least a cylindrical gap; one or more magnetic or electromagnetic components operatively engaged to the bearing cylinder and/or to the rotating cylinder to generate at least one electric current during the rotation of the rotating cylinder inside the bearing cylinder; an impeller or impellers arranged in the chamber of the rotating cylinder according to positions aligned along a longitudinal axis of the latter, the impellers engaged inside the rotating cylinder to rotate integrally with the latter upon the action of a fluid.

Abstract: A process and system for applying a liner to an inner surface of a pipeline uses an “inversion” technique to apply the liner. This involves arranging the liner into everted and non-everted portions and driving the non-everted portion through the pipeline such that it everts and is applied to the inner surface of the pipeline. At least first and second pipeline vehicles are used to drive the non-everted portion of the liner through the pipeline.

Abstract: An apparatus for injecting an accelerating fluid into an oil well includes a casing open at the ends into which a cement flows and positioned inside the well forming an annular zone with its walls. The casing includes a hollow cylindrical body with lateral surfaces integral with the casing internal surfaces and a central hole through which a cement flows, with a lower horizontal section than the casing section. The apparatus includes hollow internal chamber with an accelerating fluid; one or more body inlet devices, which put the body and chamber in fluid communication. The inlet devices are positioned on one of the hollow cylindrical body base surfaces. The apparatus includes at least one body outlet devices, which puts the chamber in fluid communication with the conduit through the central hole, positioned radially with respect to the cylindrical body axis and along the central hole internal surface.

Abstract: The receiver (25,50,100,120) according to the invention is provided with the heating area (26) for heating a heat-transporting medium, which has an optical opening (3) for sunlight, an absorber (27, 51) absorbing the sunlight arranged within the path of the incidental sunlight and with a transport arrangement for the transport of the medium through the heating area, wherein the absorber (27, 52) is designed as a blackbody radiation arrangement with reduced convection and the transport arrangement (29) for the transport of a gas is designed as a heat-transporting medium. By means of this, the receiver can be designed in a simpler and more reliable manner.

Abstract: A wave power generator includes a box-shaped body having an inner chamber containing a first gyroscopic device that includes a first frame hinged to the body around a first axis, a first gyroscope being carried by the first frame in a rotatable manner around a second axis perpendicular to the first axis, a first actuator being carried by the first frame to rotate the first gyroscope around the second axis, and a first converter device that converts rotational mechanical energy into electric energy that is mechanically coupled to the first frame. The first converter device is connected to a stabilizing device. A second gyroscopic device includes a second frame hinged to the body around a third axis transversal to the first axis.

Abstract: Process for the preparation of a disubstituted diaryloxybenzoheterodiazole compound having general formula (I):

Abstract: There is a polymeric photovoltaic cell (or solar cell) with inverted structure having an anode; an anodic buffer layer; an active layer having at least one photoactive organic polymer as electron-donor and at least one electron-accepting organic compound; a cathodic buffer layer; and a cathode. The at least one photoactive organic polymer is selected from conjugated polymers comprising an anthraditiophenic derivative having a general formula (I): The polymeric photovoltaic cell (or solar cell) with inverted structure shows good values of power conversion efficiency (PCE) (?) and can be advantageously used in the construction of photovoltaic modules (or solar modules), either on a rigid support or on a flexible support.

Abstract: There is a process of CO2 mineralization with natural mineral phases with prevalent alkaline-earth metals silicate content producing a mixture of magnesium carbonate, amorphous silica and other possibly non-reacted or non-mineralizable phases. The material thus obtained, after being washed with water, develops pozzolanic properties and can be used for formulating cements.

Abstract: The present invention relates to a smart subsea control module for controlling subsea equipment independent of equipment located above the surface of the sea, and particularly for independently managing control and safety strategies according to a programmed logic.

Abstract: A process and system for applying a liner to an inner surface of a pipeline uses an “inversion” technique to apply the liner. This involves arranging the liner into everted and non-everted portions and driving the non-everted portion through the pipeline such that it everts and is applied to the inner surface of the pipeline. At least first and second pipeline vehicles are used to drive the non-everted portion of the liner through the pipeline.

Abstract: A barrier assembly used in the protection of personnel at worksites and/or residential areas from escapes of gas. Such a barrier assembly controls the lateral and vertical spread of gas in the event of an escape of the gas, even more particularly toxic gas. The barrier assembly can be used at operating sites where gases are produced, and, in particular, where high concentrations of toxic gases like CO2, H2S, SO2, and mercaptans are present. The barrier assembly can also act as a safety system in the event of an accidental uncontrolled release of these toxic gases into the atmosphere.

Abstract: An apparatus and related process for the internal cleaning of a pipeline that includes an interchangeable rotary cleaning head, a motor device coupled to the rotary head, a movement device configured to move the apparatus inside the pipeline, and a remote control system. The combined movement of the rotary head rotation and of the advancing motion of the apparatus inside the pipeline allows the disintegration of the deposits present internally of the pipeline by mechanical action.