Abstract: The present disclosure belongs to the technical fields of genetic engineering and biotherapeutic drugs, and relates to an engineered exosome for treating hypertrophic scar (HTS), and a preparation method and use thereof. In the present disclosure, the engineered exosome for treating HTS is a mesenchymal stem cell (MSC)-derived exosome overexpressing miR-141-3p. The exosome can significantly reduce formation of the HTS.

Abstract: A power semiconductor device includes: a substrate; drain metal; a drift region; a base region; a gate structure; a first conductive type doped region contacting the base region on the side of the base region distant from the gate structure; a source region provided in the base region and between the first conductive type doped region and the gate structure; contact metal that is provided on the first conductive type doped region and forms a contact barrier having rectifying characteristics together with the first conductive type doped region below; and source metal wrapping the contact metal and contacting the source region.

Abstract: A transparent display structure and a transparent window having a display function are provided. The transparent display structure includes a first transparent base layer, a transparent display component layer, a first electrode layer, an electrochromic layer, a second electrode layer, and a semiconductor layer which are sequentially stacked. The semiconductor layer is configured to generate current under irradiation of light, the first electrode layer and the second electrode layer are configured to generate an electric field between the first electrode layer and the second electrode layer under an effect of the current, the electrochromic layer is configured that a color of the electrochromic layer changes under a control of the electric field, and the transparent display component layer has a function of displaying image.

Abstract: A batch private information retrieval method and apparatus, including: agreeing on a hash function, calculating a serial number index in an original database, retaining a result of each serial number index for each hash function, and obtaining a first hash bucket; filling an index of a batch query into a second hash bucket of a same length as the first hash bucket by the client, and encoding a filling result by using a constant weight code encoding manner; encrypting an obtained encoding result as a batch query request by the client; comparing the batch query request with the first hash bucket by the server to obtain a corresponding intermediate result, calculating correspondingly the intermediate result and the original database to obtain a corresponding query result ciphertext; and decrypting the query result ciphertext by the client, and thus simultaneously obtaining a query result of the batch query request.

Abstract: The present application provides a displaying base plate and a displaying device, which relates to the technical field of displaying. The displaying device can ameliorate the problem of screen greening caused by electrostatic charges, thereby improving the effect of displaying. The displaying base plate includes an active area and a non-active area connected to the active area, the non-active area includes an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region; the displaying base plate further includes: a substrate; an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area.

Abstract: The present invention provides a pAPN mutant and a composition for site-directed modification of pAPN gene and application thereof, involving the field of gene editing technology. The mutated pAPN mutant with an alanine at position 734 can maintain its normal expression, while reducing the ability of a host expressing the pAPN mutant to specifically bind to TGEV, which has important scientific and practical significance in pig disease resistance breeding.

Abstract: An iron core-annular array multi-ring magnetosensitive current sensor and a current measurement method, the method comprising: using a first loop structure (101) to acquire a feedback current signal generated according to a first magnetic field signal generated by a primary side current; using a second loop structure (102) to measure a second magnetic field signal generated by the current of a wire in a coil; and using a digital processing unit (103) to calculate, according to the feedback current signal and the second magnetic field signal, the feature quantity that characterizes the current of the wire, and determining the current on the wire according to the feature quantity that characterizes the current of the wire.

Abstract: Provided is a fixing member used in a support structure (100) for a bed. The support structure includes a lower frame (10), an upper frame (20), a raising/lowering mechanism (30) configured to raise and lower the upper frame with respect to the lower frame and including a support shaft (312) extending in a width direction of the bed, and a supported member (221, 222) fixed to the upper frame and supported by the support shaft. The support shaft moves in a longitudinal direction of the bed while supporting the supported member when the upper frame is raised and lowered. The fixing member includes a plurality of fixing tools (S11 to S14) configured to fix the supported member to the upper frame. Each of the plurality of fixing tools includes a flexure element (SB) fixed to the upper frame at one end and fixed to the supported member at the other end, and a strain gauge (SG) attached to the flexure element.

Abstract: A kit for breeding a pig breed with resistance to the porcine transmissible gastroenteritis virus infection and application thereof. The systems includes a genetically edited protein, pAPN-sgRNA-1, pAPN-sgRNA-2, and a donor DNA. Effectively enzymatic cleavage can be made in two target sites of a pAPN gene by the gene editing protein. By replacing the fragment to be site-directed modified located between two target sites with donor DNA, a codon encoding tryptophan at position 737 in pAPN protein can be mutated to a codon encoding alanine, thereby achieving precise mutation of tryptophan to alanine at position 737 in a pAPN protein. The systems can avoid disruption or alteration of the normal expression of other amino acids in pAPN protein, therefore, the present invention maximally retains the physiological activity function of pAPN protein on the basis of resisting TGEV infection.

Abstract: A batch private information retrieval method and apparatus, including: agreeing on a hash function, calculating a serial number index in an original database, retaining a result of each serial number index for each hash function, and obtaining a first hash bucket; filling an index of a batch query into a second hash bucket of a same length as the first hash bucket by the client, and encoding a filling result by using a constant weight code encoding manner; encrypting an obtained encoding result as a batch query request by the client; comparing the batch query request with the first hash bucket by the server to obtain a corresponding intermediate result, calculating correspondingly the intermediate result and the original database to obtain a corresponding query result ciphertext; and decrypting the query result ciphertext by the client, and thus simultaneously obtaining a query result of the batch query request.

Abstract: A screwing machine includes a motor, an output shaft, a twist portion, a plate portion, a strain gauge, an amplification circuit. The output shaft is driven by the motor. To the output shaft, a bit is attachable. The twist portion is hollow. To the twist portion, torque applied to the output shaft is transmitted through a transmission element. The output shaft is configured to be indirectly twisted by the torque applied to the output shaft. The plate portion is integrally formed with the twist portion. The strain gauge is disposed on the twist portion. The amplification circuit is disposed on the plate portion. To the amplification circuit, a signal from the strain gauge is input.

Abstract: An atomizer may include a housing and an atomizing assembly. The housing may include a nozzle and a liquid storage pipe. The nozzle may be located at an end of the liquid storage pipe and integrated with the liquid storage pipe. At least a portion of an outer surface of the nozzle away from the liquid storage pipe may include a matte surface having a first rugosity. At least a portion of an outer surface of the housing may be a polished surface through which aerosol-generating substrate stored in the liquid storage pipe can be observed. The atomizing assembly may be configured to heat and atomize the aerosol-generating substrate to generate smoke.

Abstract: The present application provides a displaying base plate and a displaying device, which relates to the technical field of displaying. The displaying device can ameliorate the problem of screen greening caused by electrostatic charges, thereby improving the effect of displaying. The displaying base plate includes an active area and a non-active area connected to the active area, the non-active area includes an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region; the displaying base plate further includes: a substrate; an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area.

Abstract: An over-energy protection circuit, a residual current device, an electronic device, and a power distribution box. The protection circuit has relatively high operating reliability, and includes: a first over-energy absorption circuit, a second over-energy absorption circuit, and a residual current determining circuit. The first over-energy absorption circuit receives a first electrical signal output from a current transformer; and when a voltage value of the first electrical signal is greater than or equal to a first preset threshold, performs step-down processing on the first electrical signal to obtain a second electrical signal, and outputs the second electrical signal to the second over-energy absorption circuit; or when a voltage value of the first electrical signal is less than a first preset threshold, outputs the first electrical signal to the second over-energy absorption circuit.

Abstract: An information retrieval method and apparatus, a computer device, and a storage medium are provided. The method includes receiving a request ciphertext sent by a client, the request ciphertext including an encrypted first code, the first code being generated based on a request entry of the client and a preset encoding algorithm; performing distributed matching on a plurality of candidate codes based on the request ciphertext to determine a second code matching the request ciphertext, the candidate codes being generated based on index entries of a database and the preset encoding algorithm; and sending a request information ciphertext associated with the index entry corresponding to the second code to the client.

Abstract: A semiconductor structure includes a base and conductive channel structure which includes first and second conductive channel layers and conductive buffer layer. The first conductive channel layer includes a first conductive channel, first and second doped regions on both sides of the first conductive channel; the second conductive channel layer includes a second conductive channel and third and fourth doped regions on both sides of the second conductive channel; the conductive buffer layer reduces electrical interference between the first and third doped regions. The semiconductor structure further includes a first wire layer disposed on the base extending in a direction and in contact with the second doped region; a second wire layer extending in another direction and in contact with the first and third doped regions; and a gate structure disposed around the first and second conductive channels.

Abstract: A method, system, and computer program product are configured to: create a link tracing data structure in response to receiving a request from a user interface (UI), wherein the link tracing data structure includes a synchronization identifier and information about user actions in the UI; handle the request by calling plural microservices; add respective synchronization content for each one of the plural microservices to the link tracing data structure, wherein the respective synchronization content for a respective one of the plural microservices comprises: the synchronization identifier; a respective step identifier that identifies the respective one of the plural microservices; and a respective synchronization message that describes an execution status of the respective one of the plural microservices; store the link tracing data structure; and provide the link tracing data structure to a requesting user.

Abstract: An air conditioner includes first and second refrigerant circulation systems each including an indoor unit including an indoor heat exchanger and an indoor throttle device, an outdoor unit including a compressor and an outdoor heat exchanger, an exhaust pipe arranged at an exhaust port of the compressor, an intake pipe arranged at an intake port of the compressor, a liquid-side piping connecting the exhaust pipe, the outdoor heat exchanger, the indoor throttle device, and the indoor heat exchanger in sequence, and a gas-side piping connecting the indoor heat exchanger and the intake pipe. The air conditioner further includes a heat circulation device configured to convey heat energy or cold energy of at least one of the indoor heat exchanger of the first refrigerant circulation system or the indoor heat exchanger of the second refrigerant circulation system into a room.

Abstract: An electrical connection device includes a panel and a connector. The panel is formed with an opened hole. The connector includes an insulative housing and a locking member. The insulative housing is configured to be capable of inserting into the opened hole of the panel and moving to an assembled position. The locking member has a protecting frame and a locking arm. The protecting frame has an inner frame body, an outer frame body and two side frame bodies which connects the inner frame body and the outer frame body. The locking arm has two end portions, an elastic arm portion and a lock protruding portion. The elastic arm portion is constructed as an elastic zone. The two end portions are connected to an inner side of the outer frame body so that the two side frame bodies are constructed as a deformable zone. When the lock protruding portion is squeezed by the panel, the elastic zone and the deformable zone all are capable of bending deformation.

Abstract: The present disclosure may provide an atomizer and an electronic atomization device. The atomizer may include a shell, a heating assembly, a lid, a base, and a first sealing component. The shell defines a liquid cavity and a smoke outlet. The heating assembly may heat and atomize the liquid into a smoke. The lid and the base may be provided to fix the heating assembly therebetween. The lid defines a liquid inlet communicating with the liquid cavity, and the liquid may flow through to reach the heating assembly. The atomizer may define an air entering hole, such that external air may enter the device through the hole to drive smoke to flow. The first sealing component may be engaged between the lid and the heating assembly, contacting both at the same time and defining air guiding channels to guide the air to flow into the liquid cavity.