Abstract: The invention discloses a control method and system for improving a transient stability area of a grid-connected inverter. It includes performing park coordinate transformation on a three-phase voltage and a three-phase output current of a connection point of a grid-connected inverter to obtain an actual voltage input value and an actual current input value required for current control; obtaining the grid-connected voltage phase through phase-locked loop processing; generating, by the power control module, the current command value required by the current control module; using the sliding mode current control method, by the current control module, to generate a dq voltage signal, and obtaining PWM modulated voltage control signals through inverse park transformation; using a LCL filter to filter out high-order harmonics to achieve grid-connected control.

Abstract: A fracturing pump spacer frame includes a hydraulic end connecting plate and a crosshead box connecting plate that are disposed spaced apart in parallel. The hydraulic end connecting plate and the crosshead box connecting plate are fastened by a support sleeve. The fracturing pump spacer frame further includes a leg. The hydraulic end connecting plate, the crosshead box connecting plate, the support sleeve, and the leg are integrally formed. The leg includes a first vertical supporting plate and a second vertical supporting plate that are vertically disposed and a first bottom supporting plate that is horizontally disposed. The first vertical supporting plate is located below the hydraulic end connecting plate. The second vertical supporting plate is located below the crosshead box connecting plate. Two sides of the first bottom supporting plate are respectively connected to lower ends of the first vertical supporting plate and the second vertical supporting plate.

Abstract: A display substrate includes: a first base substrate; scanning lines a side of the first base substrate, extending in a first direction; and arranged in a second direction data lines at the same side of the first base substrate as the scanning lines and in a different layers from the scanning lines, extending in the second direction and arranged in the first direction; a common electrode layer at a side of the scanning lines and the data lines facing away from the first base substrate; and a first light shielding layer in contact with the common electrode layer, and including first light shielding portions extending in the second direction. The first direction intersects with the second direction. The first light shielding portions are in areas between adjacent sub-pixels in the first direction.

Abstract: Gates having air gaps therein, and methods of fabrication thereof, are disclosed herein. An exemplary gate includes a gate electrode and a gate dielectric. A first air gap is between and/or separates a first sidewall of the gate electrode from the gate dielectric, and a second air gap is between and/or separates a second sidewall of the gate electrode from the gate dielectric. A dielectric cap may be disposed over the gate electrode, and the dielectric cap may wrap a top of the gate electrode. The dielectric cap may fill a top portion of the first air gap and a top portion of the second air gap. The gate may be disposed between a first epitaxial source/drain and a second epitaxial source/drain, and a width of the gate is about the same as a distance between the first epitaxial source/drain and the second epitaxial source/drain.

Abstract: Provided are a display substrate, a method for manufacturing a display substrate and a display apparatus. The display substrate includes a base, a drive structure layer disposed on the base, a light emitting element disposed on the drive structure layer, an encapsulation layer disposed on the light emitting element, a circular polarizer layer disposed on the encapsulation layer, and a lens definition layer and a lens structure layer disposed on the circular polarizer layer. The light emitting element includes a pixel definition layer provided with a plurality of sub-pixel openings; the lens structure layer includes a plurality of lenses disposed at intervals, the lens definition layer is disposed in a gap region between adjacent lenses, and an orthographic projection of each lens on the base contains an orthographic projection of a sub-pixel opening on the base.

Abstract: A tunable phase shifter and a method for manufacturing the same, and a tunable phase shifting device. The phase shifter includes a first substrate, a second substrate, and a tunable dielectric layer between the first substrate and the second substrate; the first substrate includes a first base substrate and a first electrode on the first base substrate; the second substrate includes a second base substrate and a second electrode on the second base substrate; an orthographic projection of the first electrode on the first base substrate is at least partially overlapped with an orthographic projection of the second electrode on the first base substrate, and sheet resistances of materials of the first electrode and the second electrode are both less than or equal to 0.024?/?.

Abstract: In a communication control method, a maximum RB resource that can be currently allocated by a to-be-tested base station is allocated to a terminal device communicating with the to-be-tested base station. Then a MAC layer network transmission rate of the to-be-tested base station is monitored to determine whether an event of transmitting data at a maximum network transmission rate occurs. If the event of transmitting data at the maximum network transmission rate occurs on the to-be-tested base station, it indicates that a network transmission function of the to-be-tested base station is normal.

Abstract: Examples of the disclosure relate to an access device, a computing device, a related method, an apparatus, and a medium. In an aspect, the access device transmits traffic statistics data related to traffic passing through the access device to the computing device based on at least one statistics data model for statistics data; receives traffic configuration information for the traffic from the computing device based on at least one configuration data model for traffic configuration, wherein the traffic configuration information is determined by utilizing an artificial intelligence (AI)/machine learning (ML) model to process the traffic statistics data; and configures the traffic based on the traffic configuration information. The examples of the disclosure extend the statistics data model/configuration data model, and can optimize traffic classification, bandwidth allocation, quality of service (QOS) control, etc. based on the AI/ML model.

Abstract: Provided herein are Vero cell lines that stably express Herpes Simplex Virus (HSV) ICP0 protein. These cells have the same morphology of Vero cells, exhibit stable expression of HSV ICP0 protein, and also efficiently complement replication of HSV ICP0 deficient virus for greater than 20, 30, or even 40 cell passages.

Abstract: The present disclosure relates to systems and methods for positioning a region of interest (ROI). The systems may obtain an image of an object captured by an imaging device. The systems may extract image information of the image. The systems may obtain feature information of a region of interest (ROI) in the object. The systems may determine position information of the ROI in the image using a positioning model based on the image information of the image and the feature information of the ROI.

Abstract: A method for regulating a downstream signaling pathway mediated by an activation of a trimethylamine-N-oxide includes administrating an omega-3 polyunsaturated fatty acid to a subject in need thereof. The omega-3 polyunsaturated fatty acid is for inhibiting an inflammatory response, for inhibiting an infection of a SARS-CoV-2 to a cell, for reducing an oxidative stress level in the cell, for alleviating an impairment of neovascularization, or for inhibiting a vascular fibrogenesis.

Abstract: The present disclosure relates to systems and methods for positioning a region of interest (ROI). The systems may obtain an image of an object captured by an imaging device. The systems may extract image information of the image. The systems may obtain feature information of a region of interest (ROI) in the object. The systems may determine position information of the ROI in the image using a positioning model based on the image information of the image and the feature information of the ROI.

Abstract: The present invention relates to cereal grain comprising an aleurone, an embryo, a starchy endosperm and a reduced level and/or activity of a mitochondrial single-stranded DNA binding (mtSSB) polypeptide, a RECA3 polypeptide or a TWINKLE polypeptide. Grain of the invention, or aleurone therefrom, has improved nutritional properties, and hence is particularly useful for human and animal feed products.

Abstract: Provided is a liquid sample sampling device used in an operation, and belongs to the technical field of sampling devices. The sampling device includes a negative pressure suction head, an auxiliary tube connected with a side wall of the negative pressure suction head, and a sampling bottle connected with the auxiliary tube. A rebound connecting plate is arranged at a position connecting the negative suction head and the auxiliary tube. The side wall of the negative pressure suction head is provided with a push switch. A diameter of the auxiliary tube is larger than a diameter of the negative pressure suction head. The push switch is an elastic membrane switch.

Abstract: A resonant converter includes primary and secondary circuits, a transformer, a resonant network and a control circuit. The control circuit is coupled to the primary circuit and the secondary circuit, and configured to control primary switches of the primary circuit operating with a switching frequency. At least one of primary switches is configured to be turned on from a first switching moment until a second switching moment. The control circuit is configured to control secondary switches of the secondary circuit, such that at least one of secondary switches is turned on during a first time interval to increase a current of the resonant network in a first flowing direction and an output current in a second flowing direction or equal to zero.

Abstract: The present disclosure provides a clip device. The clip device may include a clip and a storage tube. The clip may include clip arms including a first clip arm and a second clip arm; the storage tube including a channel, a proximal end of the first clip arm, and a proximal end of the second clip arm being stowable within the channel; the clip being capable of being switched from a locked state to an unlocked state; wherein in the locked state, the distal end of the first clip arm and the distal end of the second clip arm are closed and the storage tube restricts a movement of the clip relative to the storage tube toward the distal end of the first clip arm and the distal end of the second clip arm; in the unlocked state, a movement restriction of the clip by the storage tube is released and the distal end of the first clip arm and the distal end of the second clip arm are able to be reopened.

Abstract: Systems and methods for determining a target area relating to a subject situated on a table of a medical system are provided. The medical system may include a first device of a first modality and a second device of a second modality. In some embodiments, the system may: identify a second target area relating to the subject for performing a second operation using the second device; determine, based on the second target area, an initial target area relating to the subject for performing a first operation using the first device; and determine a first target area relating to the subject for performing the first operation using the first device by adjusting the initial target area.

Abstract: A charging system utilizing energy storage multiplication is provided. An energy storage battery pack of the charging system is directly connected to a DC power transmission bus. When the charging request is initiated by the charging device, the charging device takes the power from the DC bus, the AC-DC converter and DC-DC converter connected to the energy generation device work as the energy source to deliver power to the DC bus, the power goes through the DC bus to the charging device, and the rest of the power goes to the energy storage device or goes out form the energy storage device when the charring power is higher than total energy from all other converters. The high C rate discharging of the energy storage device means high power capacity during discharging, this can provide much high power than AC-DC converter to fulfill the requirement of charging device.

Abstract: A film-removing apparatus configured to remove a protecting film from a workpiece includes a supporting module configured to support the workpiece, a clamping module configured to clamp the workpiece supported by the supporting module, and a peeling module. The peeling module includes a first peeling member and a second peeling member. The first peeling member includes a bearing surface. The peeling module moves towards the clamping module to bring the bearing surface to below the protecting film, the second peeling member moves towards the protecting film to cooperate with the first peeling member in clamping the protecting member. The peeling module is then moved away from the clamping module to peel off the protecting film.

Abstract: Systems and methods for determining an ROI of a subject are provided. In some embodiments, the system may obtain a target image including the subject situated on a table. The system may also obtain a focus position associated with the ROI of the subject to be scanned or treated by a medical device in the target image. The system may further determine a target table position based on the focus position. In some embodiments, the system may obtain a model image corresponding to the subject. The system may also obtain a virtual area corresponding to a virtual ROI in the model image. The system may also obtain a positioning image of the subject. The system may further determine, in the positioning image, a target area corresponding to the ROI of the subject corresponding to the virtual ROI based on the virtual area and the positioning image.