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Wideband circularly polarized hybrid dielectric resonator antenna
ActiveUS8928544B2High bandwidthCompact geometryAntenna supports/mountingsAntennas earthing switches associationDielectric resonator antennaPhase difference
The present invention provides a dielectric resonator antenna comprising: a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four slots; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines; wherein the four slots are constructed and geometrically arranged to ensure proper circular polarization and coupling to the dielectric resonator; and wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band.
Owner:HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINIST OF NAT DEFENCE OF HER MAJESTYS CANADIAN GOVERNMENT
Wideband circularly polarized hybrid dielectric resonator antenna
ActiveUS20120212386A1High bandwidthCompact geometryPolarised antenna unit combinationsAntennas earthing switches associationDielectric resonator antennaPhase difference
The present invention provides a dielectric resonator antenna comprising: a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four slots; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines; wherein the four slots are constructed and geometrically arranged to ensure proper circular polarization and coupling to the dielectric resonator; and wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band.
Owner:HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINIST OF NAT DEFENCE OF HER MAJESTYS CANADIAN GOVERNMENT
Electro-optical modulator based on carrier depletion or carrier accumulation in semiconductors with advanced electrode configuration
ActiveUS20140248019A1Reduce crosstalkHigh on-chip device densityElectromagnetic transmissionNon-linear opticsMach–Zehnder interferometerEngineering
An electro-optical modulator with two electrodes as part of a transmission line of a first phase modulator and two electrodes as part of a transmission line of a second phase modulator included in two arms of a Mach-Zehnder-interferometer. An electrical controller applies a first electrical high-frequency-modulated voltage signals between the first and second electrodes and applies a second electrical high-frequency-modulated signals between the fourth and third electrodes. The electrical controller applies signals such that voltages applied to the first and fourth electrodes have substantially a same high-frequency content, and voltages applied to the second and third electrodes have substantially the same high-frequency content. In such configuration, a constant voltage offset is produced by either the voltages applied to the first and fourth electrodes or, the second and third electrodes. Thereby, cross-talk between electrodes, electrical losses, device size and fabrication costs may be reduced.
Owner:RWTH AACHEN UNIV
Haptic mechanism
InactiveUS20050252329A1Compact geometryEasy to calculateControlling membersManual control with multiple controlled membersThree degrees of freedomEngineering
The present invention provides a parallel mechanism comprising a base, three rotary motors fixed on the base, each of the rotary motors having a rotating shaft, three branches, each of the branches having a first end and a second end, the first end of each of the branches being connected to the rotating shaft of a different one of the rotary motors, a central coupler connected to the second end of all of the branches, the branches constraining the central coupler to be movable along at least three degrees of freedom as a function of actuation from any one of the three rotary motors, and at least one counterweight for each of the branches to balance the same about at least the rotating shaft of the corresponding one of the rotary motors such that the central coupler holds a current position and orientation without assistance from the rotary motors.
Owner:MPB TECH
High temperature-pressure radiation heat flow meter
InactiveCN101571429AExpand the testing angleSmall geometryCalorimeterConvex structureHeat conducting
A heat flow meter of wall pure radiation heat flow in high temperature-pressure environment is characterized in that a sapphire crystal window is adopted for insulating the influences of convection and heat conducting, and a heat flow meter which determines radiation heat flow by measuring axial thermoelectric force of a heat absorption cylinder is adopted. The adopted sapphire crystal window is in single-sided convex structure which can effectively expand measurement visual angle, accurate design is carried out on a round window chamfer angle, thus further expanding the measuring angle of the radiation heat flow meter to be 150 degrees. The sapphire crystal window insulates the influences of two heat flows of convection and heat conducting to make the heat flow meter measure radiation heat flow only. The lower surface of a heat receiver is provided with a cooling construction to cool the lower surface thus causing the heat receiver to form stable axial temperature distribution, and the pure radiation heat flow of wall is obtained by measuring the temperature difference of the upper surface and the lower surface of the heat receiver.
Owner:BEIHANG UNIV
Electro-optical modulator based on carrier depletion or carrier accumulation in semiconductors with advanced electrode configuration
ActiveUS9036953B2Reduce crosstalkHigh on-chip device densityElectromagnetic transmissionOptical light guidesMach–Zehnder interferometerEngineering
An electro-optical modulator with two electrodes as part of a transmission line of a first phase modulator and two electrodes as part of a transmission line of a second phase modulator included in two arms of a Mach-Zehnder-interferometer. An electrical controller applies a first electrical high-frequency-modulated voltage signals between the first and second electrodes and applies a second electrical high-frequency-modulated signals between the fourth and third electrodes. The electrical controller applies signals such that voltages applied to the first and fourth electrodes have substantially a same high-frequency content, and voltages applied to the second and third electrodes have substantially the same high-frequency content. In such configuration, a constant voltage offset is produced by either the voltages applied to the first and fourth electrodes or, the second and third electrodes. Thereby, cross-talk between electrodes, electrical losses, device size and fabrication costs may be reduced.
Owner:RWTH AACHEN UNIV
Valve apparatus for high pressure gas containers
ActiveUS20140174574A1Increase the sealing structureAccurate readingOperating means/releasing devices for valvesEqualizing valvesSolenoid valveSurface roughness
A valve apparatus is comprised of a solenoid valve, a manual valve, a pressure relief device, a check valve, an excess flow shut-off device, and a temperature sensor. The temperature sensor is arranged inside the tank in an ambient atmosphere. The sealing member is prevented from falling off from the recess by a floating seal structure. The sealing effectiveness is improved by employing a double seal configuration and also by a smooth surface roughness. A high pressure seal structure is presented. The improved pressure relief device design for 75 MPa application has been presented.
Owner:LHYMN SUE H +1
Lighting device for a motor vehicle headlight
ActiveUS20170030542A1Small footprintCompact geometryVehicle headlampsVehicle lighting systemsOptical axisEffect light
A lighting device, notably for a motor vehicle, comprising at least one module having an optical axis O, each module having:
- a light source configured to emit a light beam in an overall direction substantially forming a secant to the optical axis O and
- a light orientation guide adapted to direct the light beam emitted by the light source in a manner substantially parallel to said optical axis O at the output of said the light orientation guide and adapted to form a cut-off in the light beam.
The lighting device comprises a single portion for the output of the light beam, the output surface of which is continuously curved and is common to all the modules.
Owner:VALEO VISION SA
Vehicle lighting device using a multiple-source optical lens
ActiveUS20160076721A1Increase widthSmall batchNon-electric lightingVehicle headlampsEngineeringLight source
A part made of transparent material comprising at least two individual portions each consisting of an input surface and an output surface, the output surface being focused on the input surface of the same portion, the output surfaces being contiguous so as to form an overall output surface of the part which is continous.
Furthermore, the input surfaces are at a distance from one another by being separated by means suitable for preventing rays from a light source placed on the input surface of a portion from being able to pass through the output surface of the adjacent individual portion.
Owner:VALEO VISION SA
Centrifugal compressor having variable geometry diffuser and method thereof
InactiveCN102628453AEasy to controlEasy to FeedbackEngine manufacturePump componentsEngineeringVariable geometry
The invention provides a centrifugal compressor having variable geometry diffuser and a method thereof. The centrifugal compressor (1) comprises a plurality of diffuser vanes (5) arranged in a circumferentially spaced array about a machine axis (9). Each diffuser vane (5) is mounted on a respective shaft (10). Each of the shafts (10) is coupled to a ring (8) that is rotatable about the machine axis (9). A worm drive (11,12) is provided that comprises a worm (11) that meshes with a worm gear (12) or a segment of a worm gear (12) mounted along at least a portion of the circumference of the ring (8). A step motor (14) is coupled to the worm (11. The step motor (14) is operable to rotate the worm (11) about a worm axis (13) perpendicular to the machine axis (9), such that the worm drive (11,12) transmits rotational torque from the step motor (14) to said ring (8), to resultantly vary the position of the diffuser vanes (5).
Owner:SIEMENS AG
Valve apparatus for high pressure gas containers
ActiveUS9371913B2Increase the sealing structureAccurate readingOperating means/releasing devices for valvesEqualizing valvesSolenoid valveSurface roughness
A valve apparatus is comprised of a solenoid valve, a manual valve, a pressure relief device, a check valve, an excess flow shut-off device, and a temperature sensor. The temperature sensor is arranged inside the tank in an ambient atmosphere. The sealing member is prevented from falling off from the recess by a floating seal structure. The sealing effectiveness is improved by employing a double seal configuration and also by a smooth surface roughness. A high pressure seal structure is presented. The improved pressure relief device design for 75 MPa application has been presented.
Owner:LHYMN SUE H +1
Tunable spring rate and energy storage spring body
InactiveUS6857624B2Compact geometryHigh energy storageRubber-like material springsShock absorbersEnergy storageBiomedical engineering
The present invention is a spring, comprising a support structure and a substantially straight walled, solid elastomeric column. The support structure has a continuous and selectively vented support wall and a base wherein the support wall has different minimum and maximum inside diameters. The elastomeric column has a diameter less than, equal to, or slightly larger than the minimum diameter of the support structure wall and a height greater than the height of the support structure.
Owner:VEYANCE TECH
Bump Stop And Macpherson Strut
ActiveCN102398493ACompact geometryAxial hindrance reductionSpringsResilient suspensionsMacPherson strutEngineering
The stop has a bearing (12) comprising an upper washer (14) and a lower washer (16) defining a rolling path on which rolling bodies (18) are rolled, where the lower washer integrates a support interface against an upper end of a helical spring (22). A rigid fixing element (26) fixes a MacPherson strut to a superstructure of a vehicle. An impact stop (30) comprises an annular strip (36) placed in an annular volume (38) delimited axially by a lower bearing (40) integrated to the upper washer and an upper bearing integrated to a rigid element. An independent claim is also included for a MacPherson strut comprising a telescopic shock absorber.
Owner:NTN SNR BEARING
Multi-function showerhead filter system with swivel inlet connection
InactiveUS20050035228A1Compact geometryEffective disinfectionTreatment involving filtrationSpray nozzlesWater filterFilter system
A multi-function showerhead filter system includes a ball-like swivel-mounted inlet joint having a fluid input to the housing, the inlet joint including a fluid input cavity converging, at a distal end, into a venturi outlet. The system also includes a pressure chamber formed within the housing, downstream of the venturi outlet and in fluid communication with it, the chamber having an inlet at least equal to a largest radius of the venturi outlet. The system also includes a turbulence-inducing water filter cartridge secured within the housing downstream of the pressure chamber and having an inlet surface in fluid and mechanical communication with it. The system further includes an output within the housing, secured downstream of the filter cartridge and in fluid communication with it, the output of which is passed through the cartridge, into one of the function modes of spraying, bubbling and massaging.
Owner:DOUGLAS JOHN H +1
Compact optical system for a motor-vehicle passenger compartment
ActiveUS20200079285A1Decrease in luminanceKeep shapeLight guidesCompartment lightingProjection opticsEngineering
An optical system and an interior lighting device for a motor vehicle including a light source coupled to such an optical system. The optical system includes a first portion of an optical assembly that allows a real image of the light source to the enlarged and projected into proximity to a diffuser of the optical system. The optical assembly also includes a second portion that plays the role of a projecting optic to project out of the optical system a real image of the of the light source formed in proximity to the diffuser. The optical system allows a luminance of the light source of the interior lighting device to be decreased while preserving its pixelization, allowing light sources based on light-emitting diodes and driven with a high-amperage electrical current to be used in motor-vehicle passenger compartments without any risk to the occupants.
Owner:VALEO VISION SA
Magnet-assisted ball drive
ActiveUS20190016213A1Additional cost of addingLow costMotor depositionWheelsMagnetic tension forcePull force
The present invention concerns a magnet-assisted ball drive. The drive comprises a ball and a drive element in contact with the ball. The drive element is arranged to be rotated around its axis of rotation to drive the ball. The ball and the drive element each comprise magnetic material such that at least one of the ball and the drive element comprises a magnet to generate a magnetic pulling force to pull the ball and the drive element against each other.
Owner:ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
Water separation module, fuel oil filtering and separating assembly and assembling method thereof
ActiveCN109989862AEffective and efficient separation operationSimple geometryMachines/enginesLiquid fuel feedersFuel oilFuel filter
A water separation module (1) in a fuel filter separation assembly (900) for a fuel circulation system of a vehicle is provided, the assembly (900) comprising an assembly housing (950) extending alonga longitudinal axis (L-L), the assembly housing (950) being positionable in a horizontal position in the vehicle and accommodating a filter module (500) for filtering dirty fuel. The water separationmodule (1) may be disposed within the assembly housing (950), is fluidly connected to the filter module (500) and extends along a main axis (X-X) parallel and/or coincident with the longitudinal axis(L-L). The water separation module (1) comprises a separation device (2) and a blocking structure (3) arranged below the separation device (2) so as to prevent separated water from flowing back to the separation device (2). The blocking structure (3) comprises a blocking surface (31), at least a portion of which is inclined with respect to the main axis (X-X) to allow water separated from the fuel oil to flow towards the wall of the blocking surface (31) at the extension starting position.
Owner:UFI FILTER SHANGHAI
Vehicle lighting device using a multiple-source optical lens
ActiveUS9879838B2Small batchCompact geometryVehicle headlampsOptical signallingEngineeringLight source
A part made of transparent material comprising at least two individual portions each consisting of an input surface and an output surface, the output surface being focused on the input surface of the same portion, the output surfaces being contiguous so as to form an overall output surface of the part which is continuous. Furthermore, the input surfaces are separated at a distance from one another in order to prevent rays from a light source placed on the input surface of a portion from being able to pass through the output surface of the adjacent individual portion.
Owner:VALEO VISION SA
Device for preheating a fluid, notably a combustion engine coolant fluid
ActiveUS9410718B2Improve thermal efficiencySimple and economical structureAir-treating devicesInternal combustion piston enginesCombustionEngineering
The invention relates to a device for heating a fluid, essentially comprising a heating body with a solid element and one or more electric resistors of rectangular section of the PTC type which are arranged in grooves on the exterior surface of the solid element. The latter comprises a U-shaped passage for fluid. The invention also relates to a vehicle engine fitted with such a device for preheating or heating the coolant. The invention also relates to a method for preheating or heating using such a device.
Owner:VOLANTE NINO
Compact optical system for a motor-vehicle passenger compartment
ActiveUS10906461B2Decrease in luminanceKeep shapeLight guidesCompartment lightingLight equipmentEngineering
An optical system and an interior lighting device for a motor vehicle including a light source coupled to such an optical system. The optical system includes a first portion of an optical assembly that allows a real image of the light source to the enlarged and projected into proximity to a diffuser of the optical system. The optical assembly also includes a second portion that plays the role of a projecting optic to project out of the optical system a real image of the of the light source formed in proximity to the diffuser. The optical system allows a luminance of the light source of the interior lighting device to be decreased while preserving its pixelization, allowing light sources based on light-emitting diodes and driven with a high-amperage electrical current to be used in motor-vehicle passenger compartments without any risk to the occupants.
Owner:VALEO VISION SA
Magnet-assisted ball drive
The present invention concerns a magnet-assisted ball drive. The drive comprises a ball and a drive element in contact with the ball. The drive element is arranged to be rotated around its axis of rotation to drive the ball. The ball and the drive element each comprise magnetic material such that at least one of the ball and the drive element comprises a magnet to generate a magnetic pulling force to pull the ball and the drive element against each other.
Owner:ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
Six-degree-of-freedom parallel mechanism for motion compensation
ActiveCN107696011AIncrease stiffnessImprove carrying capacityProgramme-controlled manipulatorIsosceles trapezoidStructural engineering
The invention discloses a six-degree-of-freedom parallel mechanism for motion compensation. The mechanism comprises a frame, driving actuation assemblies and a motion compensation device; the frame comprises a frame I and a frame II; a frame support plate is mounted on the frame I; four mounting rails are arranged on the frame II; six sets of driving actuation assemblies are provided, and are fixedly mounted on the frame support plate of the frame I and the mounting rails of the frame II; the motion compensation device comprises connecting rods, an I-shaped steel plate and an upper platform inan isosceles trapezoid shape; the two ends of the lower bottom edge of the upper platform and four end parts of the I-shaped steel plate are welded with spherical hinge bases; and one ends of the connecting rods are mounted on the spherical hinge bases through spherical hinges, and the other ends of the connecting rods are connected with the driving actuation assemblies through universal joints.The mechanism is simple in control and stable in performance, can be widely applied to motion compensation of marine platforms, ships and the like, and effectively guarantees normal work of staff andinstruments in complicated marine environments.
Owner:OCEAN UNIV OF CHINA
Adjusting device and method for controlling an exit thickness of a nozzle exit gap of a flat film machine
ActiveCN112805134ALarge process strokeLarge or required large process strokeControl theoryIndustrial engineering
The invention relates to an adjusting device (10) for controlling an exit thickness (AD) of a nozzle exit gap (110) of a flat film machine (100), having a plurality of adjusting pins (20) for carrying out an adjusting movement for changing the exit thickness (AD), the adjusting pins (20) having an adjusting range (SB) between a closing end position (SE) and an opening end position (OE), the adjusting range (SB), proceeding from the opening end position (OE), furthermore having a basic travel path (BH) for a basic adjustment of the exit thickness (AD) and, proceeding from the closing end position (SE), having a process travel path (PH) for process controlling the exit thickness (AD).
Owner:温德默勒及霍乐沙两合公司
Containers having closed ends, container assemblies and medical devices having such containers
PendingUS20210030964A1Extended shelf lifeReduce riskAmpoule syringesAutomatic syringesPharmaceutical drugMechanical engineering
Container assemblies for accommodating pharmaceutical compositions are provided. The container assembly includes a container and a plunger. The container has a hollow cylindrical body with an open end and a closed end, which is closed by a bottom portion. The hollow cylindrical body has a length (L), an outer diameter (DO), and an inner diameter with a length to outer diameter ratio between 3:1 and 15:1. The hollow cylindrical body and the bottom portion are formed integrally and of the same material, which is a glass or polymer material. The container has an inner surface with an average Zn-leachability of 0.00085 μg/cm2 or less. The plunger is inside the hollow cylindrical body at the open end, is pierceable by a cannula, and is slidable relative to the hollow cylindrical body from the open end towards the closed end.
Owner:SCHOTT PHARMA SCHWEIZ AG
Module for supplying gas to motor vehicle engine
ActiveCN103998741BEliminate cantilever effectFix firmly and evenlyInternal combustion piston enginesExhaust gas recirculationCylinder headGas cooler
The invention relates to a module (100) for supplying gas to a motor vehicle engine (6), said module (100) comprising a single distributor (108), a gas cooler (107) and an air intake box (109) , the gas cooler is provided with means (120, 146) for fixing to the cylinder head of the engine (6), the air intake box (109) connects the single distributor (108) to the cooling device (107).
Owner:VALEO SYST DE CONTROLE MOTEUR
Actuating system for a drum brake
InactiveCN102207144BEasy to set upCompact geometryBrake actuating mechanismsMechanically actuated drum brakesEngineeringBrake lining
An actuating system for a drum brake of a vehicle, in particular of a commercial vehicle or an agricultural machine, comprising at least a brake lining carrier (2) which is guided on a brake bracket (4), an actuating element (6; 60) in order to move the brake lining carrier (2) towards the inner circumference of a brake drum (52), and a setting means (8) in order to control the actuating element (6; 60), wherein the actuating element (6; 60) is designed as a hollow body, in the cavity (10) of which an axle body (50; 150) is accommodated.
Owner:SAF HOLLAND GMBH
A design method of impeller inlet of supercritical carbon dioxide centrifugal compressor
ActiveCN112360810BLimit condensationImprove cycle efficiencyGeometric CADPump componentsEngineeringCentrifugal compressor
The invention discloses a design method for an impeller inlet of a supercritical carbon dioxide centrifugal compressor, and aims to provide a design method capable of restricting the condensation phenomenon at the impeller inlet, maintaining geometric compactness and high thermal cycle efficiency. It includes the following steps: the total temperature at the inlet of the impeller, the total pressure at the inlet of the impeller, the target flow function, the Mach number of the machine and the inlet angle of the pre-rotation are given; the total enthalpy of the inlet of the impeller is calculated; Accept the acceleration margin empirical coefficient and steam fraction value; calculate the maximum expansion Mach number, determine the acceptable expansion Mach number according to the obtained maximum expansion Mach number; determine the impeller inlet absolute Mach number according to the obtained acceptable expansion Mach number; according to the obtained impeller inlet absolute Mach number Calculate the static parameters of the impeller inlet under actual conditions; calculate the average isentropy index, calculate the relative axial airflow angle of the optimal impeller inlet cover, calculate the relative Mach number of the impeller inlet cover, and calculate the impeller inlet shape coefficient.
Owner:TIANJIN UNIV
Attenuated total reflection device applied to Fourier transform spectrograph
PendingCN109975209AImprove the utilization of output luminous fluxGuaranteed detection sensitivityMaterial analysis by optical meansPlane mirrorSpectrograph
The invention discloses an attenuated total reflection (ATR) device applied to a Fourier transform spectrograph. The ATR device comprises a first plane mirror, a first off-axis parabolic mirror, a second off-axis parabolic mirror, an ATR crystal, a third off-axis parabolic mirror, a fourth off-axis parabolic mirror, a second plane mirror, a third plane mirror and a fourth plane mirror. According to the ATR device provided by the invention, the light beam convergence and spot size control are achieved by using the off-axis parabolic mirrors, the use ratio of the luminous flux output by the spectrograph is improved via the mode that the dual off-axis parabolic mirrors are symmetrically distributed with respect to the ATR crystal, and thus the detection sensitivity and the signal to noise ratio are ensured. The ATR device has the characteristics of being compact, easy to integrate, and applicable to simple batch production. The ATR device has the wide application prospect in the fields ofphysics, chemistry, material, geology and biomedicine.
Owner:荧飒光学科技(上海)有限公司
Water separation module, fuel filter separation assembly and assembly method thereof
ActiveCN109989862BEffective and efficient separation operationSimple geometryMachines/enginesLiquid fuel feedersThermodynamicsWater flow
A water separation module (1) used in a fuel filter separation assembly (900) of a fuel circulation system of a vehicle, the assembly (900) includes an assembly housing (950) extending along a longitudinal axis (L-L), the assembly housing ( 950) can be positioned in a vehicle in a horizontal position and houses a filter module (500) for filtering dirty fuel. The water separation module (1) may be disposed within the assembly housing (950) and fluidly connected to the filtration module (500), extending along a major axis (X-X) parallel to and / or coincident with the longitudinal axis (L-L) . The water separation module (1) includes a separation device (2) and a blocking structure (3) arranged below the separation device (2) to prevent separated water from flowing back to the separation device (2). The blocking structure (3) comprises a blocking surface (31), at least a part of which is inclined with respect to the main axis (X-X) to allow the flow of water separated from the fuel oil to extend to the starting point of the blocking surface (31) location wall.
Owner:UFI FILTER SHANGHAI
Novel method for achieving uniform strong static magnetic field in free space
ActiveCN103223209BCompact geometryEnhanced magnetic fieldMagnetotherapy using coils/electromagnetsMeasurements using magnetic resonanceHigh intensityMagnetic field
The invention relates to a novel method for achieving a uniform strong static magnetic field in free space. The conventional method is difficult to achieve a very strong static magnetic field in free space. The novel method takes a ring-shaped component in two-dimensional space as a static magnetic field intensifier, aeolotropic non-uniform magnetic material with negative permeability is filled in the ring-shaped component, and the inner and outer areas outside the ring-shaped component are full of air; a low-intensity static magnetic field with homogeneous background is applied in the whole environment, in which the ring-shaped component is positioned; and therefore, the uniform strong static magnetic field can be achieved in the inner area outside the ring-shaped component. The novel method can achieve 50T or higher intensity magnetic fields that cannot be achieved by adopting the prior art in large free space.
Owner:ZHEJIANG UNIV
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