Abstract: Embodiments of the present disclosure provide a bulk acoustic wave resonance structure and a preparation method therefor, and an acoustic wave device. The bulk acoustic wave resonance structure comprises: a substrate; a reflection structure, a first electrode, a piezoelectric layer, and a second electrode, which are sequentially located on the substrate, the effective region of a resonance area being a first overlapping area; a first surrounding structure surrounding the first overlapping area, said structure comprising first protruding structures and first intermittent structures that are arranged at intervals; and the first protruding structures, which are located between the piezoelectric layer and the first electrode and/or are located between the piezoelectric layer and the second electrode, the end of each first protruding structure that is close to the first overlapping area being covered by the first electrode and/or the second electrode.

Abstract: The present disclosure provides an application software (APP) testing method, an electronic device, and a computer-readable storage medium. The APP testing method includes: acquiring a key log; determining information related to a tested fault cause according to the key log; acquiring a User Interface (UI) screenshot; and comparing the UI screenshot with a pre-stored UI design drawing, and determining whether there is a difference between the UI screenshot and the UI design drawing. The APP testing method provided by the present disclosure can realize quick check of network access logs and crash logs even without a platform of a development tool, assist testers and developers in problem reproduction and fault location, and improve development efficiency of the developers.

Abstract: Provided is a manufacturing process for a coiled graphene heat dissipation film material, comprising the following preparation steps: S1: preparing a graphene oxide dispersion using a graphene oxide cake material; S2: homogenizing and defoaming; S3: coating a substrate with the graphene oxide slurry via a coating machine, subjecting the substrate to stripping and slitting to give a pretreated graphene film, and coiling the film to form a tightly coiled pretreated graphene film material; S4: subjecting the tightly coiled pretreated graphene film material to loosening treatment in a reverse coiling mechanism to give a loosely coiled pretreated graphene film material; S5: subjecting the loosely coiled pretreated graphene film material to low-temperature treatment, carbonization treatment, and graphitization treatment to prepare a coiled graphene foam film material; and S6: subjecting the coiled graphene foam film material to single-layer rolling or multi-layer rolling to prepare the coiled graphene heat dissipat

Abstract: An opioid sensor includes a film having two opposed surfaces. The film includes a conductive polymer, and an anchor molecule attached to the conductive polymer so that it is immobilized at a first of the two opposed surfaces. The anchor molecule is to adsorb an opioid. The opioid sensor also includes a working electrode at least partially in contact with a second of the two opposed surfaces; and a counter electrode or counter/reference electrode electrically connected to, and positioned a spaced distance from, the working electrode.

Abstract: The present invention relates to a polymorph of an aryl phosphorus oxide compound and a dihydrate crystal form thereof, and a preparation method therefor and a use thereof. The crystalline aryl phosphorus oxide compound and dihydrate crystal form thereof can be used as EGFR and/or ALK inhibitors, in addition, the dihydrate crystal has relatively good stability and is not hygroscopic.

Abstract: The present invention belongs to the field of organophosphorus pesticide (OP) detection, and relates to a method for detecting an OP by a microfluidic chip based on a fluorescent sensing film. A porous fluorescent sensing film and the microfluidic chip are first constructed. The fluorescent sensing film is fabricated through layer-by-layer self-assembly of a platinum nanoparticle@oxalate-metal-organic framework (MOF) composite and a porous two-dimensional (2D) nanosheet, and has the functions of specifically detecting OPs and blocking macromolecular interferents. The microfluidic chip includes a sample channel, injection channels, reaction tanks, microfluidic channels, a detection tank, and an optical fiber channel, such that sample pretreatment and detection processes are integrated in the chip.

Abstract: Methods, computer systems, and apparatus, including computer programs encoded on computer storage media, for performing object detection. The system obtains a respective range image corresponding to each point cloud in a set of point clouds captured by one or more sensors. The system processes each range image using a segmentation neural network to generate range image features and a segmentation output. The system generates a feature representation of the set of point clouds from only the feature representations of the foreground points. The system processes the feature representation of the set of point clouds using a prediction neural network to generate a prediction characterizing the set of point clouds.

Abstract: A strain separation method for preventing and controlling early bolting of Angelica sinensis, and preparation of a microbial agent and use thereof, the strain is obtained by separation, purification and cultivation from rhizosphere soil of Angelica sinensis, and is identified as Bacillus spp. by Microbial 16S rDNA sequencing; the strain was deposited at China Center for Type Culture Collection on Jun. 24, 2021 under CCTCC NO: M 2021767; The Bacillus velezensis XG3 strain provided by the present invention can promote the seed germination of Angelica sinensis and delay the flowering of Arabidopsis thaliana for about 2 days; according to field test verification, the microbial agent can increase the root weight, root diameter and rootlet number of Angelica sinensis, can effectively prevent and control early bolting of Angelica sinensis.

Abstract: A composite wire is provided. The composite wire includes a single core wire, a plurality of twisted wires, and an insulation layer. In a cross section of the composite wire, the twisted wires surround the single core wire. The twisted wires are configured along the circumferential direction of the single core wire. Each twisted wire comprises a plurality of conductive wires. The insulation layer covers the twisted wires. Each conductive wire has a conductive wire diameter, and the single core wire diameter of the single core wire is greater than the conductive wire diameter.

Abstract: Provided is an analysis method for determining gas-bearing situation of an unknown shale reservoir, includes: S1, selecting a shale reservoir of a target interval of a place; and collecting data of parameters of cores of each of a known gas-bearing shale reservoir A and a known water-bearing shale reservoir B; S2, calculating average values of the parameters of each of the reservoirs A and B respectively; S3, calculating average differences of the parameters of each of the reservoirs; S4, calculating covariance values of the parameters of each of the reservoirs; S5, establishing, according to the covariance values, an equation group and resolving discriminant coefficients; S6, establishing a discriminant equation according to the discriminant coefficients and solving a discriminant index; and S7, obtaining values of parameters of cores of a sample of the unknown shale reservoir, calculating a discriminant value, and determining gas-bearing situation of the unknown shale reservoir.

Abstract: Provided is an analysis method for determining gas-bearing situation of an unknown shale reservoir, includes: S1, selecting a shale reservoir of a target interval of a place; and collecting data of parameters of cores of each of a known gas-bearing shale reservoir A and a known water-bearing shale reservoir B; S2, calculating average values of the parameters of each of the reservoirs A and B respectively; S3, calculating average differences of the parameters of each of the reservoirs; S4, calculating covariance values of the parameters of each of the reservoirs; S5, establishing, according to the covariance values, an equation group and resolving discriminant coefficients; S6, establishing a discriminant equation according to the discriminant coefficients and solving a discriminant index; and S7, obtaining values of parameters of cores of a sample of the unknown shale reservoir, calculating a discriminant value, and determining gas-bearing situation of the unknown shale reservoir.

Abstract: A high-side driver method for a laser of a Lidar, including: transforming a first input signal into a second input signal between a first voltage value and a second voltage value, by a level translation module; stepping down a first voltage signal according to a first voltage difference to obtain a second voltage signal, by a low-dropout linear regulator; generating a first control signal, by the first pre-driver module; generating a pulse current for driving the laser, by the first power switching transistor.

Abstract: This application provides a quantum circuit optimization method performed by an electronic device, and relates to quantum computing technologies. The method includes: transforming a to-be-optimized quantum circuit into a to-be-processed unitary matrix, and decomposing the to-be-processed unitary matrix iteratively, to obtain a first quantity of qubit uniformly controlled gates; decomposing each qubit uniformly controlled gate into a second quantity of qubit diagonal unitary matrices and a third quantity of single-qubit gates; determining, under constraints of a connected graph, a matching quantum circuit corresponding to each qubit diagonal unitary matrix; integrating the second quantity of matching quantum circuits and the third quantity of single-qubit gates, to obtain a target quantum circuit of each qubit uniformly controlled gate; and connecting the first quantity of target quantum circuits, to obtain an optimized quantum circuit.

Abstract: A laminated structure which at least includes one laminated unit, the lamination unit includes: a first metal oxide layer and a second metal oxide layer which are oppositely arranged, and a third metal layer arranged between the first metal oxide layer and the second metal oxide layer, and a third metal oxide film is respectively formed between the first metal oxide layer and the third metal layer, and between the second metal oxide layer and the third metal layer.

Abstract: A remote direct memory access (RDMA) data transmission system includes a first network device in a first host and a second network device in a second host. The first network device may create a shared send queue (SSQ) used by a plurality of processes run by the first host, obtain an RDMA data transmission message of a first process from the SSQ, and encapsulate a first identifier corresponding to the first process into a first packet in which the RDMA data transmission message is encapsulated. The second network device is configured to encapsulate the first identifier into a second packet in which a feedback message is encapsulated.

Abstract: A multi-task learning method comprises: determining participating nodes; performing clustering to the participating nodes and determining several clusters; determining a global model for the clusters according to the several clusters and by means of the federated learning within the cluster; determining a cluster key feature set of any one of the clusters according to the cluster model and by means of calculation with the SHAP framework; determining a global model according to the cluster key feature set; and training the global model according to the any one of the clusters, and determining the cluster model of the any one of the clusters, wherein a plurality of the clusters are used for achieving multi-task learning. In the present application, by clustering, the participating nodes having similar device performance and data distribution are collected into the same group, and the participating nodes within the same cluster are trained together.

Abstract: A computer implemented method manages an ensemble model system to classify records. A number of processor units cluster records into groups of records based on classification predictions generated by base models in the ensemble model system for the records. The number of processor units determines sets of weights for the base models that increase a probability that the base models in the ensemble model system correctly predict the groups of records. Each set of weights in the sets of weights is associated with a group of records in the groups of records.

Abstract: The present disclosure relates to a three-degree-of-freedom convenient mobile powder recovery device and a recovery method. The three-degree-of-freedom convenient mobile powder recovery device includes: a powder recovery module, a three-degree-of-freedom adjusting module and a drying and sieving module, wherein the powder recovery module is arranged on the three-degree-of-freedom adjusting module and used to recover powder; and the drying and sieving module is arranged on the three-degree-of-freedom adjusting module, connected to the powder recovery module and used to dry and sieve powder recovered by the powder recovery module. The three-degree-of-freedom convenient mobile powder recovery device has a simple structure, which is convenient to be operated. The height and position of the three-degree-of-freedom convenient mobile powder recovery device can be adjusted automatically, so that the recovery device is suitable for the setting of laser processing systems with various heights in the telescopic range.

Abstract: Embodiments of this application provide a watermark embedding method applicable to a three-dimensional (3D) field. By combining vertex data of an original 3D model and vertex data of a 3D watermark, and combining material data of the original 3D model and material data of the 3D watermark, the original 3D model and the 3D watermark can be synthesized into a 3D model. In addition, before and after watermark embedding, an appearance of the original 3D model can remain unchanged. This avoids impact of watermark embedding on the appearance and use value of the 3D model, and ensures a display effect of the 3D model. Further, a function of encrypting the embedded 3D watermark may be implemented, and the 3D watermark cannot be easily removed or modified. This can effectively ensure the copyright of the original 3D model, and better promote a digital asset such as the 3D model.