Abstract: A photoelectric hydrogen production energy storage and cold energy recovery coupled dry ice production device and a use method are disclosed. The device comprises a photoelectric conversion liquid hydrogen energy storage unit, photoelectricity participates in electrolysis of water in the storage unit to prepare hydrogen, and surplus hydrogen meeting downstream process requirements is liquefied in the unit; liquid hydrogen is output, so that intermittent photoelectric energy is converted into hydrogen energy to be stored. When hydrogen production through electrolysis of water is insufficient but industrial hydrogen is continuously used, high-grade and low-grade cold energy of low-temperature liquid hydrogen serving as cold sources in the unit is recovered from industrial tail gas purified CO2 and air separation nitrogen, liquid nitrogen and liquid CO2 are output and used for the storage unit and dry ice production respectively, and the liquid hydrogen is reheated and supplied to a downstream process.

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: 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: The present disclosure relates to methods for producing water repellent textile substrates and products thereof. The methods can be conducted without the use of perfluorocarbons.

Abstract: Provided is a method for shale gas production prediction, including: acquiring real shale gas production data, and determining a target production decline curve model according to the real shale gas production data; setting a time step for production prediction, and obtaining a linear production decline curve by performing production prediction by using the target production decline curve model based on the time step; determining target shale gas production residuals according to the linear production decline curve and the real shale gas production data, inputting the target shale gas production residuals to a long short-term memory, and obtaining a residual prediction result by performing production prediction according to the long short-term memory and the time step; and determining a target production prediction result of shale gas well to be subjected to production prediction based on the linear production decline curve and the residual prediction result.

Abstract: Provided herein is a method of separating spandex from textile blends using biosolvents. The recovered material is of high purity while the chemical structure and molecular weight remain substantially unaffected by the treatment.

Abstract: Embodiments of the present disclosure provide a display substrate and a display panel. The display substrate has a light-transmissive region and a light-shielding region, and the light-shielding region includes a main support region and a secondary support region. The display substrate includes a substrate, an alignment layer on the substrate, and a convex structure on the alignment layer. The convex structure is on a side of the alignment layer distal to the substrate and at least in the main support region, and a distance from a surface of the convex structure distal to the substrate to the substrate is greater than a distance from a surface of the alignment layer distal to the substrate to the substrate.

Abstract: The embodiments of the present disclosure provide a device for sample collection and a method for sample collection. The device for sample collection comprises a collection part, a detection part, and a connection part configured to connect the collection part and the detection part. The collection part includes a core body. The connection part includes a hollow structure. At least a portion of the core body is disposed in the hollow structure. The core body has hydrophilicity. The device for sample collection is provided with the core body with strong hydrophilicity in the collection part, the core body has a large hydrophilic surface, and the core body absorbs the sample, so that a collected sample volume and efficiency of collection can be improved. In addition, the core body has a maintenance effect on the sample, achieving an unlimited collection angle.

Abstract: The present disclosure provides a display substrate and a display apparatus. The display substrate includes a base substrate, including a display region and a frame region located on at least one side of the display region; a transistor, located on the base substrate, wherein the transistor is located in the display region and includes a gate, a first electrode and an active layer; and a protective structure, located on the base substrate, wherein the protective structure is provided in the frame region and close to the display region, and the protective structure is in the same layer as and is made of the same material as at least one of the active layer, the gate or the first electrode.

Abstract: The present disclosure relates to methods for producing functional regenerated cellulose composite fibers and products thereof. The methods can be conducted with the use of recycled and/or virgin cellulose powder.

Abstract: The present disclosure provides a self-learning collaborative control method for active steering and yaw moment for a motor vehicle, including a first step of constructing fundamental formulas which are stored in a vehicle ECU, and a second step of calculating an active steering angle ?C and a yaw moment Mc on line by the vehicle ECU according to following sub-steps during a driving process of the motor vehicle, and controlling a driving state of the motor vehicle according to ?C and Mc. The second step includes a first sub-step of collecting raw real-time parameter values, a second sub-step of performing calculation by the identifier and the control target reference model, a third sub-step of calculating ?C and Mc. The present disclosure can realize the self-learning collaborative control of active steering and yaw moment without requiring a system control model and correct a driver's steering operation.

Abstract: A motor drive system, in particular for a laundry cleaning device, includes a controller, a motor drive module, and a motor. The motor includes a three-phase winding. Each phase winding includes at least two winding units. The motor drive module is configured to drive the motor to operate based on a control instruction of the controller. A winding switching module is respectively connected to the controller, to the motor drive module and to the motor and is configured to obtain an operating mode of the laundry cleaning device from the controller and to control a type or manner of connection of the winding units in the three-phase winding based on the operating mode.

Abstract: An array substrate includes a display area and a peripheral area on a side of the display area, and includes a base substrate, at least one low temperature polycrystalline silicon thin film transistor on the base substrate and in the peripheral area, and at least one oxide thin film transistor on the base substrate and in the display area; the low temperature polycrystalline silicon thin film transistor includes a low temperature polycrystalline silicon semiconductor layer, a first gate, and a first source and a first drain, which are sequentially arranged along a direction away from the base substrate; the oxide thin film transistor includes an oxide semiconductor layer, a second gate, and a second source and a second drain, which are sequentially arranged along the direction away from the base substrate; and the first source and the first drain are each in a different layer from the second gate.

Abstract: A device for recovering carbon dioxide and nitrogen from flue gas includes a pretreatment system, a CO2and N2separation system, a N2purification and liquefaction system, and a CO2 purification and liquefaction system. The pretreatment system includes a high-temperature NG cooler, a gas-liquid separator, a booster fan, and a dryer; the CO2and N2 separation system includes a low-temperature LNG cooler and a cryogenic adsorption device; the N2 purification and liquefaction system includes a set of N2 distillation and liquefaction device consisting of a compressor, a cooler, a heat exchanger, a gas-liquid separator, and a distillation tower; and the CO2purification and liquefaction system includes a set of CO2 distillation and liquefaction device consisting of a compressor, a cooler, a condenser, an evaporator, a liquefier, and a purification tower, which are used for further purifying and liquefying desorbed gas obtained from the CO2and N2 separation system.

Abstract: Provided is an amorphous silicon thin-film transistor including an amorphous silicon semiconductor layer, a source electrode, and a drain electrode that are successively disposed on a base substrate. Ions doped by an ion implantation process are present in a region, proximal to the source electrode and the drain electrode, of the amorphous silicon semiconductor layer. A concentration of the ions in a surface region, proximal to the source electrode and the drain electrode, of the amorphous silicon semiconductor layer is greater than or equal to 5*10{circumflex over (?)}20 atoms/cc.

Abstract: A display device includes a substrate and a first common electrode layer, a pixel electrode layer and a second common electrode layer which are stacked on the substrate in turn; wherein an orthographic projection of the first common electrode layer on the substrate is at least partially overlapped with an orthographic projection of the pixel electrode layer on the substrate, and a first storage capacitor is formed on an overlapping portion of the first common electrode layer and the pixel electrode layer; an orthographic projection of the second common electrode layer on the substrate is at least partially overlapped with the orthographic projection of the pixel electrode layer on the substrate, and a second storage capacitor is formed on an overlapping portion of the second common electrode layer and the pixel electrode layer.

Abstract: A 3D vapor chamber includes a vapor chamber and at least one pipe body. The vapor chamber has an upper plate and a lower plate mated with each other. The upper plate is formed with at least one perforation. An open end of the pipe body is outward expanded to form a lip section in connection with the upper plate. A closed end of the pipe body passes through the perforation of the upper plate. The closed end and the open end together define a tubular chamber in communication with the open end and the vapor chamber. Multiple channels formed on an inner side of the tubular chamber and an inner side of the lip section are in contact and connect with a capillary structure of the inner side of the upper plate so as to increase back flowing speed of a working fluid and enhance heat dissipation performance.

Abstract: The present disclosure provides a self-learning collaborative control method for active steering and yaw moment for a motor vehicle, including a first step of constructing fundamental formulas which are stored in a vehicle ECU, and a second step of calculating an active steering angle ?C and a yaw moment Mc on line by the vehicle ECU according to following sub-steps during a driving process of the motor vehicle, and controlling a driving state of the motor vehicle according to ?C and Mc. The second step includes a first sub-step of collecting raw real-time parameter values, a second sub-step of performing calculation by the identifier and the control target reference model, a third sub-step of calculating ?C and Mc. The present disclosure can realize the self-learning collaborative control of active steering and yaw moment without requiring a system control model and correct a driver's steering operation.