Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, and a display device, and relates to the field of display technology. The display substrate includes a display region and a wiring region surrounding the display region. The wiring region includes: a gate line layer including a plurality of signal lines parallel to each other; an insulation layer covering the gate line layer, a groove being formed in the insulation layer at a position corresponding to a gap between adjacent signal lines; a planarization layer at a side of the insulation layer away from the gate line layer; and an active pattern layer at a side of the planarization layer away from the gate line layer.

Abstract: An intelligent seed production apparatus and method based on multistage screening and bud eye identification includes a feeding module, a pre-cutting module, a bud eye identifying and cutting module, and a material mixing module. The feeding module can screen out seed potatoes with the mass and shapes meeting the requirements through a multistage screening mechanism. The pre-cutting module can receive the seed potatoes discharged from the feeding module, and cut each seed potato in half; the bud eye identifying and cutting module can receive the seed potato pieces discharged from the pre-cutting module and determine the weight of the seed potatoes and identify the bud eye distribution on the surfaces of the seed potatoes, and cut the seed potato into multiple required tubers, so that bud eyes are distributed on different tubers uniformly. The material mixing module can receive the cut tubers, and complete the material mixing of the tubers.

Abstract: The present invention relates to a process for producing succinic anhydride by maleic anhydride hydrogenation, comprising (1) feeding a maleic anhydride solution and a hydrogen raw material respectively to a first-stage hydrogenation reactor from an upper liquid-phase feed port and a top gas-phase feed port of the first-stage hydrogenation reactor for a first-stage hydrogenation reaction to obtain a first-stage hydrogenation product; (2) feeding the first-stage hydrogenation product to a second-stage hydrogenation reactor for a second-stage hydrogenation reaction to obtain a second-stage hydrogenation product, optionally, before entering the second-stage hydrogenation reactor, subjecting the first-stage hydrogenation product to a first-stage gas-liquid separation to obtain a first-stage gas phase and a first-stage liquid phase, and then feeding the first-stage gas phase and the first-stage liquid phase respectively from a top gas-phase feed port and an upper liquid-phase feed port of the second-stage hydrogen

Abstract: A dental appliance system comprises: a set of dental appliances for progressively closing a tooth gap between a group of posterior teeth and an intermediate tooth in a patient's dentition, wherein the intermediate tooth is adjacent to the tooth gap and between the tooth gap and a group of anterior teeth in the patient's dentition; and wherein the set of dental appliances comprises: a first plurality of dental appliances for implementing anchorage preparation for the group of posterior teeth and performing one or both of moving the intermediate tooth distally and treating the group of anterior teeth; and a second plurality of dental appliances for mesially moving the group of posterior teeth after the anchorage preparation for the group of posterior teeth has been implemented by the first plurality of dental appliances.

Abstract: A method to simulate a circuit includes receiving at least one circuit requirement and at least one Modular Multilevel Converter (MMC) parameter; determining an operating mode and switching states of an arm circuit; determining each capacitor current based on the switching states and an arm current; determining capacitor voltage and arm voltage; and generating an equivalent circuit model to simulate MMC-based HVDC systems and DC grids in a hybrid AC and DC power system.

Abstract: A method to simulate a circuit includes receiving at least one circuit requirement and at least one Modular Multilevel Converter (MMC) parameter; determining an operating mode and switching states of an arm circuit; determining each capacitor current based on the switching states and an arm current; determining capacitor voltage and arm voltage; and generating an equivalent circuit model to simulate MMC-based HVDC systems and DC grids in a hybrid AC and DC power system.

Abstract: A method of power system preventive control candidate measures identification self-adaptive to external environment, which is applicable to dynamic identification of stations and power equipment under the effect of calamity, and judgment of preventive control measures that lose or restore control capability, and those for which control range or cost has changed. Automatic online identification of set of preventive control candidate measures includes two tasks: identification of stations and power equipment under the effect of calamity, and adjustment of the space of preventive control measures.

Abstract: A method of power system preventive control candidate measures identification self-adaptive to external environment, which is applicable to dynamic identification of stations and power equipment under the effect of calamity, and judgment of preventive control measures that lose or restore control capability, and those for which control range or cost has changed. Automatic online identification of set of preventive control candidate measures includes two tasks: identification of stations and power equipment under the effect of calamity, and adjustment of the space of preventive control measures.