Abstract: A method for preparing mesoporous iron phosphate by induction of block copolymers is provided. The method comprises preparing a ferric salt solution having a certain concentration and evenly dispersing it into a dispersant, then evenly mixing a structure directing agent solution with a phosphorus source solution, next adding the mixed solution to the ferric salt solution while dropwise adding an oxidant and stirring to react, thus after ending the reaction, washing, drying and calcinating the reaction product to obtain mesoporous iron phosphate.

Abstract: The present invention discloses a set of SNP markers related to heat tolerance of Pisum sativum developed based on a SnaPshot technology, and use thereof. In the present invention, 2,358 accessions of Pisum sativum germplasms from all over the world are subjected to a heat tolerance screening experiment by employing a manner of sowing by stages, and a reasonable Pisum sativum heat-tolerant classifying standard is established through identification of yield-related traits, so that a Pisum sativum germplasm population including heat-tolerant and heat-sensitive germplasms is obtained; and the population is subjected to genetic diversity and population genetic structure analysis through a set of SNP markers (20 markers) related to heat tolerance of Pisum sativum developed based on an SNaPshot technology, so as to provide theoretical and practical basis for the future study of heat-tolerant genetic mechanism and heat-tolerant breeding of Pisum sativum.

Abstract: A method for processing a heat exchanger includes: preparing a plurality of heat exchange tube semi-finished products, each heat exchange tube semi-finished product including a first wall and a second wall arranged in a thickness direction of the heat exchange tube semi-finished product, and the second wall having a first gap penetrating the second wall in the thickness direction; arranging N heat exchange tube semi-finished products spaced apart by a predetermined distance in a first direction, N>4, the thickness direction of the heat exchange tube semi-finished product being parallel or angled to the first direction, and in the first direction, the arranged heat exchange tube semi-finished products being sequentially defined as a first tube, a second tube, . . . , a N?1th tube, and a Nth tube; placing the second wall of the first tube towards the second tube; and placing the second wall of the Nth tube towards the N?1th tube.

Abstract: A bandwidth adjustment method is disclosed. The source node receives an adjustment command issued by a network management server, all nodes on the path are triggered to adjust a forward transmission bandwidth parameter of the Optical Service Unit (OSU) respectively, so the network management server does not need to issue adjustment commands to all the nodes on the path, thereby simplifying the process of the bandwidth adjustment. Further, the source node enters an adjustment mode corresponding to the OSU, and sequentially sends the first message to the downstream node until the sink node, so that each node on the path enters the adjustment mode corresponding to OSU, and then exits the adjustment mode corresponding to the OSU after performing corresponding adjustment on the forward transmission bandwidth parameter of the OSU, thereby realizing a synchronous adjustment of all nodes on the path based on the adjustment mode corresponding to the OSU.

Abstract: A measurement method for the impedance of the converter at multiple operating points based on the secondary-side disturbance includes the following steps: superimposing the positive sequence current disturbance in the current sampling value; superimposing the positive sequence voltage disturbance in the voltage sampling value; determining whether measurement data of the converter at two or more current operating points are obtained, if so, based on the measurement data of the converter at two current operating points, calculating values of A(s) and B(s); further calculating values of coefficients at each frequency point, and obtaining the impedance value of the converter at multiple current operating points by calculation. The above-mentioned measurement method overcomes the disadvantages of high cost and complicated operation of the impedance measurement method based on the primary-side disturbance, and solves the problem of lacking the pre-judgment function.

Abstract: A blockchain-based transaction system for a green certificate includes an audit node, a proxy node, and an off-chain node. The proxy node is used by a power producer and a purchaser; the audit node verifies qualification information of the power producer, and send a green certificate to the power producer; the off-chain node predicts a transaction price of a next transaction; when receiving sale information of the power producer and purchase information of the purchaser, the proxy node sends the sale information, a digital signature of the power producer, the purchase information, and a digital signature of the purchaser to the off-chain node; the off-chain node matches the sale information and the purchase information, and sends successfully matched transaction information to the proxy node; the proxy node sends the successfully matched transaction information to a transaction smart contract; and the transaction smart contract performs transaction processing.

Abstract: Embodiments of the present disclosure provide a method, apparatus, electronic device and storage medium for storing data. After target data is obtained, a first data feature of the target data is extracted, the first data feature representing a data volume of the target data; the target shard number is obtained based on the first data feature, the target shard number representing the number of storage units for storing target data; a corresponding storage engine is obtained based on the target shard number, and the target data is stored in the storage engines in shards. The matched target shard number is obtained based on the first data feature of the target data, and a corresponding storage engine for storage is obtained based on the target shard number.

Abstract: A contact structure includes a cavity comprising a device contact formed on a surface of a substrate, a bottom surface, and sidewalls. A metal silicide layer disposed over the surface of the device contact, the bottom surface, and the sidewalls of the cavity, and a treated surface formed over a portion of the metal silicide layer disposed over the sidewalls of the cavity.

Abstract: Embodiments of the present disclosure provide a system for determining a protocol parameter of cardiac magnetic resonance imaging. The system includes at least one storage device storing a set of instructions and at least one processor configured to communicate with the at least one storage device. When executing the set of instructions, the at least one processor is configured to direct the system to perform operations including in response to detecting that a user operation satisfies a first condition, obtaining an inversion time scout (TI-Scout) sequence for cardiac scanning; obtaining a plurality of first scan images by performing a first scan on a target object based on the TI-Scout sequence protocol; and generating a first target parameter for a phase sensitive inversion recovery (PSIR) protocol using a target parameter determination model based on the plurality of first scan images.

Abstract: A driving method for a display panel (100), a driving apparatus (200) for a display panel, and a display apparatus. The driving method includes: when in a first driving mode, determining a refresh region and a non-refresh region in a display panel (100) (S10); and inputting a first clock signal to a gate drive circuit (110) according to the refresh region and the non-refresh region, such that the gate drive circuit (110) outputs a first gate scan signal to a gate line in the non-refresh region, and outputs a second gate scan signal to a gate line in the refresh region (S20). The duration in which an active level of a first gate scan signal is maintained is less than the duration in which an active level of a second gate scan signal is maintained.

Abstract: A heat dissipation film for a display module, and a preparation method of a display device. The heat dissipation film comprises a composite structure layer and a removable protective film disposed on the composite structure layer. The composite structure layer has a first side surface and a second side surface disposed opposite to each other, and is provided with a preconfigured hole passing through the first side surface and the second side surface. The first side surface of the composite structure layer adheres to a side of the display module facing away from a display side. The protective film is attached to the second side surface of the composite structure layer. The protective film is provided with a shielding region covering the preconfigured hole. The shielding region and the rest of the protective film can all be independently torn off from the composite structure layer.

Abstract: The subject technology relates to recovering an object in a storage system. For instance, an object in a storage system is recovered by parsing object metadata associated with the object from a log in the storage system and storing the parsed object metadata in a storage space. In response to receiving a request to recover the object, the parsed object metadata from the storage space is retrieved. A linkage can be reestablished to a chunk corresponding to the object based on the retrieved object metadata. In this way, space reclamation is not impacted during recovery for the object, thereby increasing the space utilization. Furthermore, the time spent in the recovery process is reduced, and the success rate of object recovery is increased.

Abstract: A display substrate, including a plurality of gate lines and a plurality of data lines defining a plurality of pixel regions, where the plurality of pixel regions include a plurality of normal pixel regions and a plurality of redundant pixel regions at a periphery of the normal pixel regions; where each normal pixel region is provided with a first pixel electrode and a first transistor, each redundant pixel region is provided with a second pixel electrode and a second transistor, a gate of the first transistor is connected to a corresponding gate line, a source of the first transistor is connected to a corresponding data line, and a drain of the first transistor is connected to the first pixel electrode; and the second pixel electrode and the second transistor are insulated and spaced apart from each other.

Abstract: Provided is a recombinant yeast expressing germacrene A synthetase or a fusion protein thereof, wherein the fusion protein is germacrene A synthetase and farnesyl pyrophosphate synthase. The recombinant yeast improves the yield of germacrene A, and is suitable for the industrialized production of ?-elemene and/or germacrene A.

Abstract: Provided are a circuit and method for measuring capacitance and capacitance-voltage characteristics of a microelectronic device. The circuit includes a pulse generation sub-circuit, a sub-circuit P, and a sub-circuit N. The pulse generation sub-circuit generates clock pulses CLK1 and CLK2 with non-overlapping active levels. The sub-circuit P includes a first current mirror, a first large capacitor, a first transmission gate, a second transmission gate, a first OR gate, a first AND gate, a first NOT gate, a second NOT gate, and a third NOT gate. The sub-circuit N includes a second current mirror, a second large capacitor, a third transmission gate, a fourth transmission gate, a second OR gate, a second AND gate, a fourth NOT gate, a fifth NOT gate, a sixth NOT gate, and a seventh NOT gate.