Abstract: The present disclosure provides a shielding apparatus for a lower end of an injection needle and an injection device, and relates to the technical field of injection instruments. By using the shielding apparatus for a lower end of an injection needle in the present disclosure, in the process of mounting a needle holder on an insulin pen, and when the injection needle is completely removed from the insulin pen, the limit block also moves downwardly to abut against a bottom wall of the moving groove, and the shielding cylinder completely covers the lower end of the injection needle, so as to avoid a situation that a user accidentally touches the lower end of an injection needle to be injured, thereby avoiding the safety risk when the lower end of the injection needle is removed.

Abstract: The present disclosure provides a display panel, a metasurface lens, and a manufacturing method thereof. The metasurface lens includes: a first substrate and a second substrate disposed opposite to each other; multiple first micro nanostructures arranged at intervals on one side of the first substrate facing the second substrate; multiple second micro nanostructures arranged at intervals on one side of the second substrate facing the first substrate; wherein at least one of the first micro nanostructures is located in gaps between multiple of the second micro nanostructures, and at least one of the second micro nanostructures is located in gaps between multiple of the first micro nanostructures. The present disclosure can reduce the difficulty of the manufacturing process.

Abstract: A magnetic attraction component is provided. The magnetic attraction component includes a magnet unit. The magnet unit includes a plurality of magnets. Two adjacent magnets, in the plurality of magnets, that repulse each other are welded. This application may be applied to an electronic device such as a mobile phone.

Abstract: This application provides a double-blind identity authentication method and terminal and a computer-readable storage medium. The method includes: Acquiring a first facial feature vector uniquely identifying a user during user registration, and encrypting the first facial feature vector according to a preset encryption algorithm to obtain a first encrypted feature vector; acquiring a current second facial feature vector of the user during identity authentication, and encrypting the current second facial feature vector according to the preset encryption algorithm to obtain a second encrypted feature vector to be verified; and matching the second encrypted feature vector with the first encrypted feature vector, and if the matching is successful, displaying that the identity authentication succeeds. This application provides a safe and reliable identity authentication function to eliminate the risks of identity forgery and privacy breaches.

Abstract: A preparation method of a passivated contact structure includes: forming a tunneling layer on a semiconductor substrate; forming an intrinsic semiconductor layer on the tunneling layer; forming a doped layer containing a dopant on the intrinsic semiconductor layer, and performing an activation treatment on the doped layer to diffuse the dopant in the doped layer into the intrinsic semiconductor layer to form a doped semiconductor layer. The tunneling layer and the doped semiconductor layer form the passivated contact structure.

Abstract: The present application relates to a method for manufacturing a solar cell. In the method, a wafer including a substrate and a doped conducting material layer is provided. A first surface and a portion of a first side surface of the substrate include a textured structure. The doped conducting material layer covers the textured structure. A passivating contact material layer is formed on each surface of the wafer. The wafer formed with the passivating contact material layer is cut along the thickness direction of the substrate to form a sub-wafer, so as to form a doped conducting layer. The passivating contact material layer is etched to form a passivating contact layer. A first passivation layer is formed on the doped conducting layer, and further covers at least a portion of a cut edge side surface which is a side surface of the sub-wafer formed by cutting the wafer.

Abstract: A conductive paste and a solar cell. The conductive paste includes a conductive powder, a first glass frit, and a second glass frit. The first glass frit includes at least one of lead-containing glass and bismuth-containing glass. A glass transition temperature of the second glass frit is greater than 600° C. In the conductive paste, a weight percentage of the first glass frit ranges from 0.5% to 5%, and a weight percentage of the second glass frit ranges from 0.5% to 10%.

Abstract: The present disclosure discloses an anthropomorphic lane-changing control method and system based on driving risk quantification, and a vehicle. The method includes: determining whether a main vehicle has a lane-changing intention based on motion statuses of the main vehicle and a front vehicle in a current lane; if there is a lane-changing intention, generating an anthropomorphic lane-changing trajectory that satisfies safety constraints and reachability constraints; based on a motion status of a traffic participant that causes a risk to the main vehicle, calculating an overall risk level and determining whether the anthropomorphic lane-changing trajectory satisfies risk constraints; and if the risk constraints are not satisfied, regenerating an anthropomorphic lane-changing trajectory; or if the risk constraints are satisfied, performing tracking control based on a preview-following theory.

Abstract: Disclosed is a paper cutting and creasing equipment based on synchronous combination of convex and concave cams, including a rack and a paper pressing system, where a groove is formed in a center of the paper pressing system; and a first synchronous belt entering the groove, where the first synchronous belt is arranged below paper, the first synchronous belt is also provided with a through hole, a first linear advancing part is arranged above the paper pressing system, and a second linear advancing part is arranged below the paper pressing system. The first linear advancing part is equipped with a first creasing carriage, and the original single-sided creasing of packaging paper from above is changed to double-sided creasing of packaging paper through the cooperation of a convex cam and a concave cam, thereby preventing microcracks on the back side of the packaging paper and even surface peeling.

Abstract: A hydrate of a VEGFR inhibitor, a crystal form thereof and a preparation method therefor are provided. The VEGFR inhibitor is 6-(6,7-dimethoxyquinazolin-4-yl-oxy)-N,2-dimethylbenzofuran-3-carboxamide, and the hydrate and the crystal form thereof have good physicochemical properties, and have good flowability, solubility, stability and bioavailability, and alleviated hygroscopicity. In addition, the preparation method is simple, has good repeatability, achieves high yield, and is easy to perform and environment-friendly, and the method requires only a small amount of solvents and facilitates recycling use, thus effectively reducing the cost on reagents, and enabling easy implementation of large-scale mass production.

Abstract: The present disclosure generally relates to methods and compositions for in situ analysis or detection of analytes in a biological sample. More specifically, the present disclosure relates to methods for reducing autofluorescence in tissue samples, methods for analyzing tissue samples, and compounds for use in the same. The methods and compounds of the present disclosure may be especially suitable for analytical methods employing fluorescence in situ hybridization techniques over multiple cycles of imaging.

Abstract: Disclosed is a brake mechanism, including: a wire wheel; and a magnetic brake assembly disposed at one end of the wire wheel and including a magnet assembly and a centrifugal adjustment assembly, where the magnet assembly is configured to generate a magnetic induction line, and the centrifugal adjustment assembly is configured to automatically adjust a distance between the magnet assembly and an end surface of the wire wheel based on a rotational speed of the wire wheel to adjust a range of the wire wheel cutting the magnetic induction line, to automatically adjust a braking force, thereby providing different braking forces, so that the rotational speed of the wire wheel may be automatically fine-tuned to maintain a dynamic balance with the braking force, thereby reducing a probability that a fishing line birds nest occurs. In addition, the present application further discloses a bait casting reel and a fishing tackle.

Abstract: The present invention discloses a centrifugal brake mechanism, including a wire reel; a brake ring assembly, arranged on one side of the wire reel; and a centrifugal brake assembly, including a centrifugal seat connected to the wire reel and at least two centrifugal arms, wherein the centrifugal arm is rotatably connected to the centrifugal seat and is capable of swinging vertically relative to the centrifugal seat; and at least one centrifugal bean having a polygonal cross-section is also rotatably connected to the centrifugal arm, so that a swing angle of the centrifugal arm relative to the centrifugal seat is automatically adjusted according to the rotation speed of the wire reel, thereby adjusting a contact area between the centrifugal bean and the brake ring assembly, and then the rotation speed of the wire reel may be automatically fine-tuned to maintain a dynamic balance with the brake forces.

Abstract: In some embodiments, an apparatus for generating a radiation, such as X-rays, includes an emitter, such as an electron gun, of a beam of charged particles; a target, such as an anode, extending a length along a target trajectory that includes at least a curved segment and including a material adapted to emit a radiation, such as X-rays, upon the charged particles impinging on the target; and a scan tube attached to the emitter and enclosing the target. The target has multiple portions, some of which being disposed closer to the emitter than other portions. The apparatus may further include two control components. The first component includes one or more magnets for guiding the charged particle along the target without impinging on it; the second component includes one or more magnets for deflecting the guided charged particles to impinge upon the target at different locations over time.

Abstract: The present disclosure relates to the field of solar cell technologies. The present disclosure provides a solar cell and a manufacturing method therefor, a photovoltaic module, and a photovoltaic system. The solar cell includes: a substrate; a tunnel oxide layer stacked on a surface of the substrate, the tunnel oxide layer being an oxide layer including at least a silicon element and an oxygen element; and a polysilicon doped conductive layer stacked on a side of the tunnel oxide layer facing away from the substrate. The tunnel oxide layer is doped with a carbon element and a hydrogen element.

Abstract: The present patent application relates to the use of non fluorinated aromatic polymers as additives for fluorinated lubricants.

Abstract: A system, and method thereof, is provided for determining a vehicle trip on a roadway. The system may include a plurality of detection zones and a computer program product residing on a non-transitory computer readable medium and executable by one or more processors to direct performance of operations comprising: receiving one or more vehicle detection events corresponding to a given vehicle, each of the one or more vehicle detection events associated with one of a plurality of detection zones; storing a plurality of predefined trip patterns, each of the plurality of predefined trip patterns including at least one detection zone of the plurality of detection zones; and matching the one or more vehicle detection events to a longest matching trip pattern of the plurality of predefined trip patterns to define a trip.

Abstract: A cultivation method of konjac under non-chemical simulated environment includes: (1), site selection: a forest land with a shade degree in a range of 30% to 90% and a slope of 0° to 30° is selected, roots 1.5 to 2.0 meters away from a tree trunk are plowed and broken, followed by fertilizing, and forming ridges for planting; (2), planning: a planting depth of konjac seed corms is 3 to 5 times a height of the konjac seed corms, then a Penicillium glabrum agent is applied; (3), weed and pest control: after the planting, a planting bed of the ridges is covered; once konjac seedlings are grown, a complex solution containing Penicillium glabrum is applied every month, after half a month of the applying the complex solution, Qingkulike, matrine, and azadirachtin are applied; (4), fertilization: after the konjac seed corms enter a swelling period, a high-potassium organic fertilizer is applied.

Abstract: A cultivation method of konjac under non-chemical simulated environment includes: (1), site selection: a forest land with a shade degree in a range of 30% to 90% and a slope of 0° to 30° is selected, roots 1.5 to 2.0 meters away from a tree trunk are plowed and broken, followed by fertilizing, and forming ridges for planting; (2), planning: a planting depth of konjac seed corms is 3 to 5 times a height of the konjac seed corms, then a Penicillium glabrum agent is applied; (3), weed and pest control: after the planting, a planting bed of the ridges is covered; once konjac seedlings are grown, a complex solution containing Penicillium glabrum is applied every month, after half a month of the applying the complex solution, Qingkulike, matrine, and azadirachtin are applied; (4), fertilization: after the konjac seed corms enter a swelling period, a high-potassium organic fertilizer is applied.

Abstract: The provided is a driving priority assignment and reference velocity planning method for multi-vehicle cooperation. The driving priority assignment method includes: obtaining driving parameter data of vehicles under multi-vehicle cooperation, and identifying potential collision points between vehicles and calculating a time limit for vehicles to drive to the potential collision points, wherein the time limit includes a minimum time and a maximum time; constructing and solving a slack nonlinear programming problem based on the time limit for the vehicles to drive to the potential collision points to obtain an initial solution result, wherein during the process of constructing the slack nonlinear programming problem, a vehicle driving priority p involved in the potential collision points and a time t when the vehicles reach the potential collision points are configured as optimization variables, and introducing a slack variable; and performing iterative solution to obtain an optimal vehicle driving priority.