Abstract: An antenna, a formation method of the antenna, and an antenna group are provided in the present disclosure. The antenna includes a first substrate, a second substrate, a third substrate and a feed source. A first frequency selective surface is on a side of the first substrate; a reflective layer is on a side of the second substrate; a first electrode layer is on a side of the third substrate; and the third substrate is on a side of the second substrate away from the first substrate, and liquid crystal molecules are between the second substrate and the third substrate; or the third substrate is on a side of the first substrate away from the second substrate, and liquid crystal molecules are between the third substrate and the first substrate. The feed source is on the side of the second substrate or on the side of the third substrate.

Abstract: Liquid crystal antenna box, antenna, and method of manufacturing the antenna box are provided. The antenna box includes first baseplate, second baseplate, liquid crystal layer, and insulation layer. The first baseplate includes a first substrate and a first metal layer. The first metal layer includes a ground part and a via between the ground parts. The second baseplate includes a second substrate and a second metal layer. The second metal layer includes a phase shifter and an interval groove between the phase shifters. Surface spacing between the phase shifter, and the insulation layer in the via or a surface of the first substrate close to the second substrate, surface spacing between the ground part, and the insulation layer at the interval groove or a surface of the second substrate close to the first substrate, and surface spacing between the ground part and the phase shifter, are equal.

Abstract: Embodiments of the present disclosure relate to a method and system for processing intraoral scanning, an electronic device, and a medium. The method includes: obtaining a positioning mode of a scan post in response to a request for scanning an oral cavity including scan posts, scanning the oral cavity to obtain target scanning data, and performing processing based on the positioning mode of the scan post and the target scanning data to determine positioning information of the scan posts.

Abstract: A node positioning method for marine environmental monitoring wireless sensor networks is provided, which jointly estimates node positions and path loss factors by considering the node real-time movement and the path loss and absorption effect of underwater communication; transforms an original non-convex problem into a non-negative constrained least squares framework, and finds the optimal solution of marine node positions by two stages of interior point method and block coordinate update. In the first stage, the problem is re-expressed by using the penalty function according to the interior point method to obtain the approximate solution; and in the second stage, the original problem is transformed into a generalized trust region sub-problem, and the approximate solution obtained by the interior point method is used as the initial estimation, the accurate estimation values of the marine node position and path loss factor are obtained by iterative solutions combined with the block coordinate update.

Abstract: A new crystal form and use of a nitrogenous tricyclic compound in the field of drugs. Specifically, a new crystal form of 2-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)-10H-spiro[benzo[6,7]oxepino[3,2-b]pyridine-11,1?-cyclopropane]-7-carboxylic acid, and the new crystal form is a crystal form I. A pharmaceutical composition including the crystal form I, and the use of the crystal form I or the pharmaceutical composition in preparation of a drug for preventing, treating, or relieving an FXR-mediated disease of a patient.

Abstract: The present disclosure relates to a scanner and a method for scanning. The scanner includes a projection optical system, a first acquisition optical system, a second acquisition optical system, and a data processing system. The projection optical system is configured to synchronously project visible light and infrared light with a stripe pattern to a target area. The first acquisition optical system is configured to acquire a first image based on the infrared light, where the first image is an image with the stripe pattern, and the first image includes facial information and tooth information. The second acquisition optical system is configured to acquire a second image based on the visible light, where the second image is a color texture image. The data processing system is configured to perform data processing based on the first image and the second image to obtain color three-dimensional model data of a measured object.

Abstract: A crystalline form of a pyrrole amide compound, a preparation method therefor and a use thereof, and also a pharmaceutical composition including the crystalline form. The crystalline form or the pharmaceutical composition can be used to treat and prevent diseases such as hyperaldosteronism, diabetic nephropathy, hypertension, heart failure (including chronic heart failure, etc.), sequelae of myocardial infarction, liver cirrhosis, renal failure, and stroke.

Abstract: The application relates to an efficient particle filter node positioning method for ocean sensor networks, including the following steps: 1) obtaining a first state vector of mean value of posterior probability at k?1 moment; 2) establishing the state model of the nonlinear system; 3) obtaining the observation model of the nonlinear system; 4) propagating particles, and calculating the state vector ?+k at the next moment according to the particle vector at k?1 moment; 5) obtaining the observed value and calculating the weight; 6) judging whether it is degraded, if not, the weight is used to calculate the position expectation, otherwise, 7) is executed; 7) modifying small-weight particles; 8) resampling the improved residual and normalizing the weights; and 9) using the weight of 8) to calculate the position expectation and realize node positioning.

Abstract: A sensor and its fabrication method are provided. The sensor includes a first glass substrate, a circuit layer on a side of the first glass substrate, and a radio frequency processing chip on a side of the circuit layer away from the first glass substrate.

Abstract: A manufacturing method of a heat pipe structure is provided. Firstly, a step S1 is performed. An original heat pipe structure is provided. The original heat pipe structure includes an enclosed space in a sealed state and an original wick structure disposed within the enclosed space. Then, a step S2 is performed. Portion of the original heat pipe structure is deformed to form a deformation portion. The deformation portion clamps portion of the original wick structure. The enclosed space is separated into two subspaces. Then, a step S3 is performed. The deformation portion is cut to separate the two subspaces to form two heat pipe structures.

Abstract: The disclosure discloses a method and device for generating a digital model. The method includes: acquiring integrated point cloud data of a measured object based on at least one set of measured object images of the measured object; performing mesh processing on the integrated point cloud data with at least two different resolutions so as to obtain at least two mesh models of the measured object; and integrating the at least two mesh models so as to generate an integrated mesh model with multiple resolutions.

Abstract: Provided is a method for precipitating a starch emulsion, the method including: mixing a fermentation broth with the starch emulsion, the fermentation broth including an isolated microorganism, wherein the isolated microorganism is Leuconostoc citreum WSJ-57 deposited under an accession number of CGMCC No. 19201 in the China General Microbiological Culture Collection Center on Dec. 20, 2019.

Abstract: The present disclosure relates to a three-dimensional scanning system, a method and apparatus for processing scanning data, and a storage medium. The system includes a three-dimensional scanning device and auxiliary member. The auxiliary member is configured to be mounted on an implant of a dental arch in an oral cavity. The three-dimensional scanning device is configured to scan the oral cavity to obtain local multi-frame three-dimensional data of the oral cavity, and to finally optimize and determine, on the basis of the local multi-frame three-dimensional data of the oral cavity and standard three-dimensional data of the auxiliary member, overall three-dimensional data of teeth and gums in the oral cavity. The three-dimensional scanning system can achieve the purposes of reducing the optimization cost and improving the accuracy of the full dental arch, and meets the accuracy requirements of multiple-missing-position or edentulous jaw implant bridges, thereby facilitating popularization and application.

Abstract: A monitoring system based on a digital converter station includes a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side; the monitoring terminal at each level includes a communication module, a human-machine interaction module, a device status monitoring module, a device alarm management module, a video fusion processing module, and a data transmission adjustment and control module.

Abstract: Embodiments of this application provide an EIRP control method and a communications apparatus. In this solution, an EIRP threshold of a spatial grid may be determined, where the EIRP threshold of the spatial grid is related to a safety distance of the spatial grid; and a plurality of beams are controlled, so that a total EIRP of the plurality of beams in the spatial grid is less than or equal to the EIRP threshold. According to the foregoing solution, a total EIRP of each spatial grid may be controlled, at a granularity of a spatial grid, to not exceed an EIRP threshold of the spatial grid, so that deployment of a MIMO access network device satisfies an EMF strength requirement specified by each country/region.

Abstract: A dual pre-stacking system of steel plates for a single cutting line and a stacking method therefor. The dual pre-stacking system comprises: a cooling bed inspection stand, a crop shear with a cut-to-length function, a bilateral shear, 1#inkjet printer, a front pre-stacker, a cut-to-length shear, a length and thickness gauge, 2#inkjet printer, surface check/size inspection and fitting, and a rear pre-stacker arranged in order along the roller. The dual pre-stacking system and the stacking method therefor of the present invention solves the problem that the inkjet printing, size fitting and pre-stacking in the later zone of the cutting line are slow when producing steel plates with high magnification, simultaneously performs pre-stacking operation after bilateral cutting and surface check in one cutting line, achieves synchronous inkjet printing/imprinting, size fitting and pre-stacking of the steel plates at two sites along the cutting line.

Abstract: The present disclosure relates to a method for protecting DC line impedance phase based on protection and control coordination, and an application scenario of the method for protecting is a three-terminal flexible DC transmission network. The method uses high controllability of a converter after a fault, injects a characteristic signal at a characteristic frequency, and calculates a phase angle of input impedance to determine a fault interval, which effectively improves protection performance, turns passive to active, and is not affected by nonlinearity of the converter. At the same time, compared with a full-bridge MMC, using a half-bridge MMC does not need to perform fault ride-through first when identifying a fault, and does not need to add additional equipment, it creates fault features and can reliably identify an fault interval; improves protection quickness and at the same time also has better economic benefits.

Abstract: A rural wastewater recycling device, including a collecting ditch, a moving cover, multiple treatment units, a water storage tank and a biological purification assembly. The collecting ditch has a trapezoidal cross section, and is connected to the moving cover. Adjacent treatment units are communicated, and two terminal treatment units are respectively connected with the collecting ditch and the water storage tank. The water storage tank is configured to store treated water. The biological purification assembly is connected with the treatment units, and is configured to purify wastewater flowing through the treatment units. A rural wastewater recycling method based on such device is also provided.