Abstract: Provided herein is a natural rubber based infill for artificial turf having biodegradable granules. The granules have a natural rubber that has been physically but not chemically modified by the addition of a quantity of filler material, and the granules have a mean size of between 0.2 and 5 mm.

Abstract: Provided herein is a natural binder-based infill for artificial turf having biodegradable granules. The granules have a natural binder that has been physically but not chemically modified by the addition of a quantity of filler material, and the granules have a mean size of between 0.2 and 5 mm.

Abstract: A floor structure, and a relative method for controlling the temperature, comprising a floor layer, a supporting layer realizing a continuous air chamber having an aerial extension comparable to an aerial extension of a floor surface, and an air movement system to generate an air flow through the floor layer from the air chamber to the floor surface and/or viceversa, the air movement system comprising one or more air mouths opening into the air chamber at a distance from a side surface of the air chamber.

Abstract: Sports surface (10) comprising a backing layer (1) and a pile layer (2), wherein the pile layer comprises pile fibres, connected to the backing layer to form loops (21) and the loops are closely packed together to form a substantially continuous playing surface. The substantially continuous playing surface can be used for ball sports or other recreational purposes. The application further relates to a method for making such a sports surface.

Abstract: The present invention relates to a polyethylene backing layer for an artificial turf substrate consisting essentially of highly oriented, high density polyethylene filaments forming warp and weft threads, the high density polyethylene filaments having a density of at least 945 kg/m3 and a melt flow index of maximum 2 g/10 min. The invention further relates to filaments for making such a backing layer, a method for producing such filaments and an artificial turf substrate including such a backing layer.

Abstract: A natural binder-based infill for artificial turf, comprising biodegradable granules, wherein the granules comprise a natural binder that has been physically but not chemically modified by the addition of a quantity of filler material, wherein the granules have a mean size of between 0.2 and 5 mm.

Abstract: A natural rubber based infill for artificial turf, comprising biodegradable granules, wherein the granules comprise natural rubber that has been physically but not chemically modified by the addition of a quantity of filler material, wherein the granules have a mean size of between 0.2 and 5 mm.

Abstract: A planetary gearbox having a sun gear, a plurality of planet gears, a ring gear, and a plurality of journal bearing pins. At its axially forward face side and/or at its axially rearward face side, each planet gear forms a recess that extends inside the planet gear starting from the face side. The planet gear forms a protrusion at its axially forward face side and/or at its axially rearward face side. The protrusion has an axial extent and a radial extent, wherein the radial extent is limited at the respective face side to the area between the planet gear inner bore and the radial inner limit of the respective recess in the planet gear, and wherein the protrusion is configured to provide for a flow path for oil emerging from the journal bearing that guides the oil away from the journal bearing.

Abstract: A planetary gearbox having a sun gear, a plurality of planet gears, a ring gear, and a plurality of journal bearing pins. At its axially forward face side and/or at its axially rearward face side, each planet gear forms a recess that extends inside the planet gear starting from the face side. The planet gear forms a protrusion at its axially forward face side and/or at its axially rearward face side. The protrusion has an axial extent and a radial extent, wherein the radial extent is limited at the respective face side to the area between the planet gear inner bore and the radial inner limit of the respective recess in the planet gear, and wherein the protrusion is configured to provide for a flow path for oil emerging from the journal bearing that guides the oil away from the journal bearing.

Abstract: A hydraulic seal arrangement for a rotating machine comprises an annular housing disposed around a shaft having an axis of rotation, the annular housing being relatively rotatable with respect to the shaft and having a sealing fluid zone within a radially outer portion of an interior of the annular housing. A fin extends radially from the shaft into the annular housing, with at least a portion of the fin extending radially into the sealing fluid zone. In use, the sealing fluid is centrifugally accelerated before being directly introduced into the sealing fluid zone by a sealing fluid inlet so as to generate a swirl component upon its introduction.

Abstract: A hydraulic seal arrangement for a rotating machine, the hydraulic seal arrangement comprising: an annular housing around a shaft having an axis of rotation, the shaft and the annular housing being relatively rotatable; the annular housing further comprising a sealing fluid zone at a radially outer portion of the housing; a fin extending radially from the shaft into the annular housing, at least a portion of the fin extending radially into the sealing fluid zone; wherein sealing fluid is centrifugally accelerated, in use, before being directly introduced into the sealing fluid zone by a sealing fluid inlet, to generate a swirl component upon introduction.

Abstract: A gas turbine engine rotor arrangement comprising at least one blade and a disc is disclosed. The blade extends radially outwards from the disc and is secured thereto by cooperating shank of the blade and recess of the disc. The shank comprises a bottom surface facing a base surface of the recess, the bottom surface having axially extending peripheral edges. The bottom surface is shaped so that when the engine rotor arrangement is in use, liquid in a cavity between the bottom surface and base surface, acted upon by an unbalanced force in the radially outward direction, is guided by the bottom surface to flow between and away from the axial edges.

Abstract: This invention concerns a system for cooling components in a gas turbine engine, the gas turbine engine including a compressor for driving a primary gas flow to a combustor and a turbine arranged to be driven by combustion gases from the combustor, wherein the system includes: an annular cooling flow passage arranged for fluid communication between the compressor and the turbine, the flow passage having a first inlet arranged to receive gas from the primary gas flow downstream of compressor, and a second inlet located upstream of the first inlet, wherein the annular cooling flow passage has at least one internal wall for guiding airflow from the first inlet towards the airflow from the second inlet, the airflow from the first and second inlets coalesce within the annular flow passage prior to passing along the passage in a direction from the compressor to the turbine.

Abstract: Methods for dissolving carbon materials such as, for example, graphite, graphite oxide, oxidized graphene nanoribbons and reduced graphene nanoribbons in a solvent containing at least one superacid are described herein. Both isotropic and liquid crystalline solutions can be produced, depending on the concentration of the carbon material The superacid solutions can be formed into articles such as, for example, fibers and films, mixed with other materials such as, for example, polymers, or used for functionalization of the carbon material. The superacid results in exfoliation of the carbon material to produce individual particles of the carbon material. In some embodiments, graphite or graphite oxide is dissolved in a solvent containing at least one superacid to form graphene or graphene oxide, which can be subsequently isolated. In some embodiments, liquid crystalline solutions of oxidized graphene nanoribbons in water are also described.

Abstract: A gas turbine engine rotor arrangement comprising at least one blade and a disc is disclosed. The blade extends radially outwards from the disc and is secured thereto by cooperating shank of the blade and recess of the disc. The shank comprises a bottom surface facing a base surface of the recess, the bottom surface having axially extending peripheral edges. The bottom surface is shaped so that when the engine rotor arrangement is in use, liquid in a cavity between the bottom surface and base surface, acted upon by an unbalanced force in the radially outward direction, is guided by the bottom surface to flow between and away from the axial edges.

Abstract: In some embodiments, the present disclosure pertains to methods of forming a solution of single-walled carbon nanotube polyelectrolytes in a liquid crystalline phase. In some embodiments, such methods comprise: (a) providing single-walled carbon nanotube polyelectrolytes; and (b) mixing the single-walled polyelectrolytes with a polar aprotic solvent to form a mixture, where the mixing results in the formation of single-walled carbon nanotubes in the liquid crystalline phase. In some embodiments, the polar aprotic solvent comprises crown ether. In some embodiments, the present disclosure pertains to a method of making single-walled carbon nanotube fibers. Further embodiments of the present disclosure pertain to a method of making a single walled carbon nanotube composite. In some embodiments, the present disclosure pertains to an article comprising neat aligned carbon nanotubes.

Abstract: This invention concerns a system for cooling components in a gas turbine engine, the gas turbine engine including a compressor for driving a primary gas flow to a combustor and a turbine arranged to be driven by combustion gases from the combustor, wherein the system includes: an annular cooling flow passage arranged for fluid communication between the compressor and the turbine, the flow passage having a first inlet arranged to receive gas from the primary gas flow downstream of compressor, and a second inlet located upstream of the first inlet, wherein the annular cooling flow passage has at least one internal wall for guiding airflow from the first inlet towards the airflow from the second inlet, the airflow from the first and second inlets coalesce within the annular flow passage prior to passing along the passage in a direction from the compressor to the turbine.

Abstract: Carbon nanotubes (CNT) fibers having a resistivity lower than 120 ??*cm are prepared by a wet spinning process including the steps of supplying a spin-dope of carbon nanotubes to a spinneret, extruding the spin-dope through at least one spinning hole in the spinneret to form spun carbon nanotubes fibers, and coagulating the spun carbon nanotubes fibers in a coagulation medium to form coagulated carbon nanotubes fibers. The carbon nanotubes fibers are drawn at a draw ratio higher than 1.0. The carbon nanotubes have a length of at least 0.5 ?m. The carbon nanotubes fibers can further have a resistivity lower than 50 ??*cm. At the same time, the CNT fibers can have high modulus.

Abstract: In some embodiments, the present disclosure pertains to methods of forming a solution of single-walled carbon nanotube polyelectrolytes in a liquid crystalline phase. In some embodiments, such methods comprise: (a) providing single-walled carbon nanotube polyelectrolytes; and (b) mixing the single-walled polyelectrolytes with a polar aprotic solvent to form a mixture, where the mixing results in the formation of single-walled carbon nanotubes in the liquid crystalline phase. In some embodiments, the polar aprotic solvent comprises crown ether. In some embodiments, the present disclosure pertains to a method of making single-walled carbon nanotube fibers. Further embodiments of the present disclosure pertain to a method of making a single walled carbon nanotube composite. In some embodiments, the present disclosure pertains to an article comprising neat aligned carbon nanotubes.

Abstract: Flow restrictors (4), (14) are widely utilized with regard to providing flow control in such situations as with respect to sealing and pressurization of bearing chambers in gas turbine engines. The restrictor (4), (14) restricts a flow (5), (15) but with prior arrangements may be susceptible to deposition upon flank surfaces of the restrictor (4). These depositions may fragment and block an aperture (7), (17) of the restrictor (4), (14) reducing operational effectiveness. By provision of a deflector (18) having a deflector surface (19) flows (15) can be presented such that a greater proportion of the flow including droplets or other matter which may result in surface deposition or erosion will pass directly through an aperture (7, 17) rather than impinge upon the flank surfaces of the restrictor (14). Furthermore, the deflector (18) is dimensioned such that surfaces which may be susceptible to deposition have dimensions smaller than the aperture (17).