Abstract: A stability control method for a virtual synchronous generator (VSG) in a strong grid based on an inductance-current differential feedback is provided. A grid-connected topological structure of a VSG using the control method includes a direct-current (DC)-side voltage source, a three-phase inverter, a three-phase grid impedance and a three-phase grid. By controlling the VSG and controlling the inductance-current differential feedback, the method suppresses the oscillation of the output power from the VSG in the strong grid and implements the stable operation of an inner-loop-free VSG in the strong grid, without adding the physical inductance, increasing the cost of the filter and additionally providing a grid-side current sensor.

Abstract: A semiconductor structure includes a substrate; a first electrode layer over the substrate; a dielectric layer on a sidewall surface of the first electrode layer; and a second electrode layer over the substrate. The first electrode layer, the dielectric layer, and the second electrode layer are arranged in a direction parallel to a surface of the substrate.

Abstract: A data processing method performed by a first device includes: generating, in response to first service data satisfying a data uploading condition, a first bit array corresponding to the first service data; encrypting the first bit array through a data key to obtain a ciphertext bit array, the data key being generated by a second device in a data intersection application run in a trusted execution environment of the second device; and transmitting the ciphertext bit array to a blockchain node for forwarding to a second device, for the second device to decrypt, in the data intersection application through the data key, the ciphertext bit array to obtain the first bit array.

Abstract: A device for detecting soil nutrients on site, including an extracting grid, an on-site real-time detection assembly and a transfer assembly for transferring a soil extract from the extracting grid to the on-site real-time detection assembly. A soil nutrient detection method using the device and a microfluidic chip are also provided. The microfluidic chip includes a cover plate and a base plate. The base plate includes a soil extract feeding groove, a quantitative feeding groove, a reagent storage groove, and a serpentine groove.

Abstract: Embodiments disclosed herein include electronic packages. In an embodiment, the electronic package comprises a first package, wherein the first package comprises, a first package substrate, a first die over the first package substrate, a first mold layer over the first package substrate and around the first die, and a plurality of through mold interconnects (TMIs) through the first mold layer. The electronic package may further comprise a second package electrically coupled the first package by the TMIs, wherein the second package comprises a second package substrate, a second die over the second package substrate, and a solder resist over a surface of the second package substrate opposite from the second die. In an embodiment, the electronic package may also comprise a barrier between the first package and the second package.

Abstract: Provided are control method and device of an energy-storage coordinated floating wind turbine, relating to the technical field of wind turbines. The control method of an energy-storage coordinated floating wind turbine can construct a primary frequency regulation model of a floating wind farm based on a frequency response unit, construct a second frequency regulation model according to an energy storage system, further construct, according to the primary frequency regulation model and the second frequency regulation model, a frequency regulation model of a hybrid power system containing the floating wind farm, the energy storage system, and a pre-set thermal power unit, and design an overall frequency regulation control strategy of the hybrid power system based on the frequency regulation model of the hybrid power system.

Abstract: A method for cleaning an air conditioner includes: in response to a cleaning instruction, controlling frosting on the surface of a target heat exchanger; after a frosting completion condition is met, controlling defrosting of the frost on the target heat exchanger; and after a defrosting completion condition is met, reducing the surface temperature of the target heat exchanger to a sterilization temperature, and carrying out quick cooling sterilization, wherein the temperature difference between the sterilization temperature and the defrosting temperature during defrosting meets a set temperature change sterilization condition. By a frosting-defrosting process, dirt such as dust on the heat exchanger may be effectively stripped and deep bacteria may be exposed, and then the quick cooling sterilization process may kill the bacteria by utilizing the sharp temperature change during switching from the defrosting process to the quick cooling process. Also disclosed is the air conditioner.

Abstract: Embodiments of the disclosure include an electric field measurement system that includes a first light source, a first light sensor configured to receive electromagnetic energy transmitted from the first light source, an electro-optic sensor, and a controller. The electro-optic sensor may include a package comprising a first electro-optic crystal disposed within a body; and at least one optical fiber. The optical fiber is configured to transmit electromagnetic energy transmitted from the first light source to a surface of the first electro-optic crystal, and transmit at least a portion of the electromagnetic energy transmitted to the surface of the first electro-optic crystal and subsequently passed through at least a portion of the first electro-optic crystal to the first light sensor that is configured to generate a signal based on an attribute of the electromagnetic energy received by the first light sensor from the at least one optical fiber.

Abstract: A scheduling electronic device is used for selecting a candidate time-frequency resource set required for communication of a predetermined electronic device in the group to which the scheduling electronic device belongs; and the scheduling electronic device comprises a processing circuit, and the processing circuit is configured to: receive, from at least one member electronic device located in an overlapping region between said group and other groups, a cooperative sensing result obtained by sensing a time-frequency resource by the at least one member electronic device during at least a portion of a cooperative resource sensing window, so as to assist the scheduling electronic device in selecting a candidate time-frequency resource set, the cooperative resource sensing window being a time period for the at least one member electronic device to perform the assistance so as to sense the time-frequency resource.

Abstract: Embodiments provided herein generally include apparatus and methods in a plasma processing system for rapid and inexpensive repair and replacement of RF sensors necessary for the operation of radio frequency (RF) power generation and impedance matching equipment used for generating a plasma in a plasma chamber during semiconductor processing therein. Flexible communications between equipment of the plasma processing system allows sharing of process information and equipment settings for batch processing of a plurality of semiconductor wafers during the manufacturing process. Operational settings of a master plasma processing system may be used to control the operation of a plurality of slave processing systems. In addition, the operational settings of the master plasma processing system may be recorded and reused for controlling the plurality of slave processing systems.

Abstract: An array substrate, a preparing method thereof, a display panel and a display apparatus are disclosed. The array substrate includes: a base substrate (1); a driving circuit structure (2) on the base substrate (1); a planarization layer (3) and a plurality of electrode structures (4) successively located on a side, facing away from the base substrate (1), of the driving circuit structure (2); insulation structures (5) in gap areas between adjacent electrode structures (4); and pixel defining structures (6) on a side, facing away from the base substrate (1), of the insulation structures (5). The thickness of the insulation structures (5) is not smaller than the thickness of the electrode structures (4). An orthographic projection of the pixel defining structures (6) on the base substrate (1) at least completely covers the insulation structures (5).

Abstract: A method for producing an abrasion-resistant coating on the inner wall of an aluminum alloy workpiece is provide. The steps include mixing a graphene powder and Al powder to obtain a mixed powder; combining and heating the mixed power with a polyvinyl alcohol (PVA) liquid, and performing spray granulation to obtain a low-temperature self-propagating composite; stirring a slurry comprising the low-temperature self-propagating composite and sodium silicate; injecting the slurry into a cylindrical inner cavity of an aluminum alloy workpiece mounted on a horizontal rotary table for rotation, the aluminum alloy workpiece is heated with the rotation at a second temperature of 80-100° C. so that the slurry is uniformly solidified on the cylindrical inner surface of the cylindrical inner cavity; and burning the slurry, after the slurry is uniformly solidified and while the rotation is maintained, with an oxyacetylene flame to form the wear-resistant coating.

Abstract: A staged cementing device includes a cylindrical body having an inner chamber. A circulating opening and a liquid inlet recess open to the inner chamber are arranged on a wall of the body. An opening assembly is arranged in the body, which has an opening sleeve and an opening seat located in the opening sleeve. Initially the opening sleeve is connected with the body through a first shear pin and covers the circulating opening, and the opening seat is connected with the opening sleeve through a second shear pin and covers the liquid inlet recess. A packer includes a packing valve body and a packer rubber. The packing valve body includes a flow channel in communication with the liquid inlet recess, and the packer rubber includes a liquid reservoir in communication with the flow channel. The second shear pin is sheared off in response to primary cementing procedure.

Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a first lid plate seated on the chamber body. The first lid plate may define a plurality of apertures through the first lid plate. The systems may include a plurality of lid stacks equal to a number of the plurality of apertures. The systems may define a plurality of isolators. An isolator may be positioned between each lid stack and a corresponding aperture of the plurality of apertures. The systems may include a plurality of annular spacers. An annular spacer of the plurality of annular spacers may be positioned between each isolator and a corresponding lid stack of the plurality of lids stacks. The systems may include a plurality of manifolds. A manifold may be seated within an interior of each annular spacer of the plurality of annular spacers.

Abstract: The present invention provides a method for preparing battery-grade anhydrous iron phosphate from liquid crude monoammonium phosphate, and belongs to the technical field of chemical industry production. In the present invention, ferrous sulfate solution and liquid crude monoammonium phosphate are used as raw materials, and ferrous iron is oxidized to ferric iron and separates out iron phosphate precipitate under the action of an oxidizing agent to obtain iron phosphate intermediate slurry; and then battery-grade anhydrous iron phosphate is finally obtained through solid-liquid separation, washing, aging, solid-liquid separation, washing, drying, dehydration and breaking up. The method provided by the present invention realizes the resource utilization of liquid crude monoammonium phosphate, has simple process and convenient operation and produces less waste water.

Abstract: A modified cutinase is disclosed. The cutinase has the modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of asparagine at position 181 with alanine, or substitutions of asparagine at position 181 with alanine and phenylalanine at position 235 with leucine. The modified enzyme has improved PET-hydrolytic activity, and thus, the high-activity PET hydrolase is obtained, and the industrial application value of the PET hydrolase is enhanced.

Abstract: Disclosed are techniques for providing a unified beam indication framework using multiple transmission-reception points. The techniques are performed by the disclosed apparatuses, systems, methods, and computer readable media. In one aspect, a method of wireless communication is disclosed. The method includes receiving, at a wireless device, an indication of a plurality of beam states. The method further includes performing, using the indication, a communication operation by the wireless device. In another aspect, another method of wireless communication is disclosed. The method includes transmitting, from a network node, an indication of a plurality of beam states, wherein a wireless device performs, using the indication, a communication operation.

Abstract: A circuit screening system including a target circuit under test receiving a first testing signal in a first period and a second testing signal in a second period; and a clock generating circuit providing a clock signal to the target circuit under test, the clock signal triggering the target circuit under test to receive the first testing signal in the first period and the second testing signal in the second period; the clock signal having a first profile and a second profile in the first period and the second period, respectively, and the first profile and the second profile having a phase difference.

Abstract: A wideband variable impedance load for high volume manufacturing qualification and diagnostic testing of a radio frequency power source, an impedance matching network and RF sensors for generating plasma in a semiconductor plasma chamber for semiconductor fabrication processes. The wideband variable impedance load may comprise a fixed value resistance operable at a plurality of frequencies and coupled with a variable impedance network capable of transforming the fixed value resistance into a wide range of complex impedances at the plurality of frequencies. Response times and match tuning element position repeatability may be verified. Automatic testing, verification and qualification of production and field installed radio frequency power sources for plasma generation are easily performed.

Abstract: ETA (estimated time of arrival) calculation for a mobile machine is disclosed. The ETA of the mobile machine to a destination is calculated by obtaining a current pose of the mobile machine, obtaining a global path from the current pose of the mobile machine to the destination, obtaining a local path, calculating a dynamic ETA for each pair of the consecutive poses in the local path and summing the calculated dynamic ETAs, calculating a baseline ETA for each pair of consecutive poses from a pose in the global path that is closest to the last pose in the local path to the last pose in the global path and summing the calculated baseline ETAs, and obtaining a total ETA to the destination based on the dynamic ETA and the baseline ETA.