Abstract: The present disclosure provides a manufacturing method of a semiconductor structure, including: an insulating layer includes a first dielectric layer and a second dielectric layer, a protective layer covers an upper surface of the second dielectric layer and a bottom and sidewalls of the first trench; removing part of the protective layer to expose at least part of a surface of the second dielectric layer; removing the second dielectric layer by a first wet etching process, the first wet etching process has a first etch selectivity of a material of the second dielectric layer to that of the first dielectric layer; and removing the protective layer by a second wet etching process, the second wet etching process has a second etch selectivity of a material of the protective layer to that of the first dielectric layer, and the second etch selectivity is greater than the first etch selectivity.

Abstract: The present disclosure provides a device and a method for measuring levelness of a top cover of a reactor pressure vessel. The device includes a mounting and fixing mechanism, an inclination sensor mounting base, and an inclination sensor. The mounting and fixing mechanism includes a mounting bottom plate, and a fixing mechanism disposed on the mounting bottom plate. The inclination sensor mounting base includes a bearing plate located on the mounting bottom plate, and a portal frame disposed on the bearing plate and having a top surface. The inclination sensor is mounted on a sensor mounting surface of the bearing plate and located in the portal frame, and configured to obtain levelness of the sealing surface of the top cover by measuring levelness of the sensor mounting surface of the bearing plate.

Abstract: Disclosed in the present disclosure is a similarity calculation method considering multiple features for a multi-scale road network, which includes structural similarity calculation of skeleton lines and local feature similarity calculation of the multi-scale road network. A road network stroke is generated, skeleton lines of the road network are extracted and transformed into a structure tree, and the skeleton similarity of the road network is evaluated by calculating structural similarity of the structure tree of the multi-scale road network. Topological similarity of the multi-scale road network is calculated by using a difference matrix of a conceptual domain graph of road meshes, geometric similarity of the multi-scale road network is calculated by using a density of road meshes, and local similarity of the multi-scale road network is obtained by integrating the hierarchy of the road network into the topological and geometric similarity calculation in the form of matrices.

Abstract: Provided by the present disclosure is a power distribution box having a data interaction function, comprising a moving mechanism, a control mechanism and a data interaction mechanism. The moving mechanism comprises an electric valve and an electric telescopic rod. The control mechanism comprises a main control single-chip microcomputer and a control panel. The data interaction mechanism comprises a power distribution box tester and an output port. The electric valve is electrically connected to the main control single-chip microcomputer and is arranged at the bottom of the power distribution box. The control panel is arranged on a support rod and is electrically connected to the main control single-chip microcomputer. The power distribution box tester is electrically connected to the main control single-chip microcomputer and is arranged in the power distribution box, and the power distribution box tester is used for testing electrical devices of the power distribution box.

Abstract: A hardware accelerator comprises a PE array, an internal buffer unit, and a data scheduler. The data scheduler obtains multiple image lines from the internal buffer unit and schedules the PE array to sequentially perform MAC (multiply-accumulate) operations on the multiple image lines. There are overlapping pixel lines between adjacent image lines, and the overlapping pixel lines are subjected to MAC operations in both of their adjacent image lines to which they belong. During the MAC operations on each image line, the PEs of the PE array are scheduled to perform MAC operations in tiles on multiple tiles included in each image line. For adjacent tiles, the operation result of the overlapping portion between the previous tile and the subsequent tile is cached, and combined with the operation result of the non-overlapping portion of the subsequent tile to form the MAC operation result of the subsequent tile.

Abstract: A computer device includes a network interface circuit, a storage device, and a processor. The network interface circuit is used to receive a first transmission control protocol (TCP) packet from another computer device, wherein the first TCP packet include a session layer content. The storage device is used to store a program code. The processor is used to load and execute the program code to perform the following operation: computing a network speed of a network used by the computer device according to information carried by the session layer content.

Abstract: Disclosed are heat pipes of the type having a condenser section in which gaseous refrigerant is condensed to produce liquid refrigerant comprising: (a) at least one closed pipe comprising: (i) a condenser section, (ii) a first evaporator section in fluid communication with said condenser section; and (iii) at least a second evaporator section in fluid communication with said condenser section; (b) refrigerant contained in said heat pipe; (c) at least a first liquid flow path leading a first portion of liquid refrigerant condensed in said condenser section to said first evaporator section; and (d) at least a second liquid flow path leading a second portion of liquid refrigerant condensed in said condenser section to said second evaporator section, wherein said second evaporator section comprises a reservoir holding liquid refrigerant at a location different than said first evaporator section.

Abstract: This application discloses a method and apparatus for displaying a virtual item, an electronic device, and a storage medium, and belongs to the field of computer technologies. The method includes: displaying a virtual object in a virtual scene, the virtual object having a plurality of virtual items, and the plurality of virtual items respectively having virtual functions; and displaying a virtual combined item in the virtual scene in response to a first trigger operation targeting at least two virtual items of the plurality of virtual items, the virtual combined item being obtained by combining the at least two virtual items, and the virtual combined item supporting a new virtual function different from the virtual functions of the at least two virtual items.

Abstract: This application is directed to a braking mechanism that is used in a lifting column. The braking mechanism comprises a connecting component, a mounting seat, and a self-locking spring. The connecting component includes a first spline portion, a stepped portion, an intermediate connection portion, and a second spline portion, arranged sequentially along an axis. The second spline portion and the intermediate connection portion pass through the mounting seat. The stepped portion contacts an end face of the mounting seat. The self-locking spring is mounted on the intermediate connection portion. An end of the self-locking spring is fixed to the mounting seat.

Abstract: Flexible scheduling, self-healing, high-utilization strong stability for cellular network communications are discussed. Cellular network communication settings and strategies are developed with communication interval, transmit power data rate, channel delay, spectrum occupancy, source coding, receiving sensitivity, channel coding, signal-to-noise ratio, packet loss rate, channel occupancy rate, reception frequencies frequency band size of data package transmission frequencies, data package structure, modulation scheme, information coding scheme, antenna configuration.

Abstract: A kitchen waste wastewater treatment equipment includes a reaction kettle, a discharging mechanism and a pressurizing mechanism. In the process of high-temperature and high-pressure thermal hydrolysis of wastewater in the present disclosure, the pressurizing disk in the pressurizing mechanism continuously moves downwards in a vacuum state in the reaction kettle, reducing the volume in the reaction kettle and thus increasing the pressure. The secondary pressurization of wastewater is achieved while using heating for high-temperature and high-pressure, and the high-temperature and high-pressure environment greatly improves the reaction rate of thermal hydrolysis. The thermal hydrolysis reaction also generates gas for further pressurization, which greatly improves the treatment efficiency of wastewater. Moreover, the pressurizing mechanism and the exhaust annular groove can separate the gas generated after thermal hydrolysis.

Abstract: The present disclosure may provide a radiation system including a first rotation portion, a second rotation portion, a treatment head, one or more imaging sources, and at least one detector. At least a portion of the treatment head may be disposed in the first rotation portion. At least one of the one or more imaging sources may be disposed in the second rotation portion. The second rotation portion may be able to rotate independently from the first rotation portion.

Abstract: A backlight module and a display apparatus. The backlight module includes: a back panel, including a base plate and a vertical plate connected with an edge of the base plate; the base plate is matched with the vertical plate to form an accommodation space; a light guide plate, located in the accommodation space and having a safety gap with the vertical plate of the back panel; and an optical film, located in the accommodation space and located on a side of the light guide plate away from the base plate. A surface of the light guide plate facing the optical film has a first positioning portion and a second positioning portion; the first positioning portion positions the optical film in a first direction, and the second positioning portion positions the optical film in a second direction. The first direction and the second direction are perpendicular to each other.

Abstract: A backlight module includes a back plate, a plastic frame disposed on one side of the back plate and connected with the back plate, a light source assembly located on an inner side of the plastic frame, and a reflective sheet, a light guide plate, and an optical membrane group sequentially stacked and located on the inner side of the plastic frame; the light source assembly includes a circuit board and a light source disposed on a first side surface of the circuit board, and the light source is located at a first side edge of the light guide plate; the light guide plate includes a first surface facing the reflective sheet and a second surface facing away from the reflective sheet; a first rectangular annular step and a second rectangular annular step are provided on an end face of the plastic frame facing the back plate.

Abstract: A method for cutting a monocrystalline silicon square rod may include the steps of: loading: providing a square rod on a working platform and clamping the square rod, and lowering the square rod until it comes into contact with a diamond wire; cutting: setting cutting parameters, and cutting the square rod by forward and reverse reciprocating movement along the diamond wire, wherein during cutting process, first speed of the working platform varies synchronously with wire speed; and unloading: unloading after the cutting step is finished, wherein the square rod is gradually separated from the diamond wire.

Abstract: The present disclosure provides a dispersion measurement device and method based on a Franson second-order quantum interference technology. The device includes: an energy-time entangled twin-photon source configured to generate a plurality of optical signals, where the optical signals each include a signal photon and an idle photon; a polarization splitter configured to split the signal photon and the idle photon, and enable the signal photon to pass through a to-be-measured dispersive medium, such that a correlation time processing module records, under a width of a coincidence measurement integration window, first time of the idle photon arriving at a first single-photon detector, and second time of the signal photon arriving at a second single-photon detector, and obtains a twin-photon conference time width based on the first time and the second time; and a processing module.

Abstract: Embodiments of the present application provide a model training method and apparatus, and a device and a storage medium, and relate to the technical field of motion capture. The method includes: training a motion capture model according to a preset training set, wherein the motion capture model includes a time series prediction unit; performing, through a quantization node in the time series prediction unit, a quantization operation and an inverse quantization operation in sequence on model data passing through the quantization node; and adjusting a weight parameter of the time series prediction unit according to an update on a gradient of the time series prediction unit until the motion capture model converges, wherein the weight parameter includes a weight scaling parameter and a weight direction.

Abstract: Turn-off circuits. In one aspect, the turn-off circuit includes a transistor having a gate terminal, a source terminal and a drain terminal, a first pull-down circuit connected to the gate terminal, a second pull-down circuit connected to the gate terminal, and a third pull-down circuit connected to the gate terminal. In another aspect, the first, the second and the third pull-down circuits are arranged to cause a turn off of the transistor by changing a voltage at the gate terminal at a first rate of voltage with respect to time from an on-state voltage to a first intermediate voltage, and from the first intermediate voltage to a second intermediate voltage at a second rate of voltage with respect to time, and from the second intermediate voltage to an off-state voltage at a third rate of voltage with respect to time, wherein the first rate is higher than the second rate.

Abstract: An optical system includes an optical film curved about a first axis and a light control film curved about the first axis. The light control film can be disposed between a light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film can include a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

Abstract: A method of manufacturing a semiconductor structure and a semiconductor structure are disclosed. The method of manufacturing a semiconductor structure includes: providing a substrate, and forming a first sacrificial layer on the substrate, where the first sacrificial layer includes a first sacrificial dielectric layer and a second sacrificial dielectric layer; patterning the first sacrificial layer, and forming first intermediate pattern structures that are arranged at intervals, where a first gap is provided between two adjacent first intermediate pattern structures; forming a first spacer pad layer in the first gap, where the first spacer pad layer covers sidewalls of each of the two adjacent first intermediate pattern structures and a bottom of the first gap; removing the first spacer pad layer at the bottom of the first gap, and the second sacrificial dielectric layer; and removing the first sacrificial dielectric layer, to form first pattern structures.