Abstract: Disclosed are a method for mining rare earth ore by electrification and a leaching agent for mining rare earth ore by electrification. The method includes: arranging liquid injection holes in a mining area, arranging electrically conductive liquid injection pipes in the liquid injection holes, and connecting N electrically conductive liquid injection pipes in a same row in parallel to an electrification control system; and adding a leaching agent into the liquid injection holes, and applying a direct current between electrodes by the electrification control system, the leaching agent including small molecular betaine. According to the present disclosure, the betaine can reduce the wetting resistance between solid and liquid phases, and promote the wetting and infiltration effects of a leaching agent solution on soil.

Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.

Abstract: The invention provides novel heterocyclic compounds having the general formula (I), and pharmaceutically acceptable salts thereof, wherein R1 to R6 are as described herein: Frther provided are pharmaceutical compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds as medicaments, in particular methods of using the compounds as antibiotics for the treatment or prevention of bacterial infections and resulting diseases.

Abstract: The present disclosure relates to a method of evaluating effective green water resources based on dynamic crop coefficients and a device thereof. The method includes constructing a SWAT model of an area to be measured; constructing a mathematical relation expression of vegetation potential transpiration, and introducing dynamic crop coefficients into the SWAT model; evaluating results obtained by operating the SWAT model according to the measured evaporation data and leaf area index monitoring data obtained in advance, and calibrating crop growth parameters and evapotranspiration parameters; judging evaporation effectiveness according to a land cover type and a dynamic coverage calculation method, and carrying out daily simulation to obtain a total amount of effective green water resources in the area to be measured.

Abstract: The invention provides novel heterocyclic compounds having the general formula (I), and pharmaceutically acceptable salts thereof, wherein X, D, R1 to R4, and R6 to R10 are as described herein. Further provided are pharmaceutical compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds as medicaments, in particular methods of using the compounds as antibiotics for the treatment or prevention of bacterial infections and resulting diseases.

Abstract: A compound for treating diseases related to cerebral ischemic injury. The structure of the compound is as represented by formula (II) below. The compound exhibits higher bioavailability and higher distribution concentrations in rat plasma and brain tissues, and shows a good efficacy in the treatment of ischemic brain injury.

Abstract: A path fusing and planning method for a passing region, a robot, and a chip. The robot searches for candidate paths for fusion in a narrow channel having many obstacles distributed therein in advance, and then uses a path fusing and planning method to fuse a heuristic search algorithm and the candidate routes satisfying a search condition, so as to plan an overall navigation path.

Abstract: A file moving method, an electronic device, and a computer-readable storage medium are provided. An implementation includes: in response to receiving a file moving request, determining a source path and a destination path corresponding to a first moving operation corresponding to the request; determining whether the source path and the destination path corresponding to the first moving operation exist; in response to determining that both the source path and the destination path corresponding to the first moving operation exist, comparing at least one of the source path and the destination path corresponding to the first moving operation with a corresponding path of a source path and a destination path corresponding to the second moving operation; and determining, based on a result of the comparing, whether the first moving operation is to be performed.

Abstract: The invention discloses a 3D printer based on liquid-solid chemical reaction deposition and operating methods thereof, comprising a sealed forming chamber, a powder container, a forming container, a powder spreading mechanism, and a three-axis linkage mechanism in the sealed forming chamber. The three-axis linkage mechanism moves a nozzle in the sealed forming chamber according to a movement path planning of a control system of the 3D printer. A liquid supply device is provided outside the sealed forming chamber. The liquid supply device contains a gel-like reactant. The nozzle is a liquid nozzle. The liquid nozzle communicates with the liquid supply device through a following conduit.

Abstract: Provided is a camera optical lens, including, from object side to image side, a first lens having positive refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having positive refractive power; a sixth lens; a seventh lens having positive refractive power; an eighth lens having negative refractive power; and a ninth lens having negative refractive power. The camera optical lens satisfies 2.00?f1/f?3.50 and 2.00?d5/d6?9.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d5 denotes an on-axis thickness of the third lens, and d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens. The lens has large aperture, wide angle and ultra-thinness while having good optical performance.

Abstract: Discloses a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, a sixth lens with a positive refractive power, a seventh lens with a positive refractive power, an eighth lens with a negative refractive power and an ninth lens with a positive or negative refractive power. The camera optical lens satisfies: ?5.00?f1/f??2.00; 2.00?d7/d8?12.00. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.

Abstract: A complex flow tube for fine sealing coating of a PVC material for an automobile includes a base fixed to a mechanical arm, and a pipeline connected to the base for delivering a PVC sealant; the base is detachably butted with an interface of a PVC gluing pump mounted on the mechanical arm; the PVC gluing pump delivers the PVC sealant through the pipeline to a part to be coated or sealed of the automobile. The complex flow tube may be combined with the metal 3D printing technology, so that the manufactured complex flow tube has the advantages of being convenient to use, simple in structure, high in strength, not liable to break, etc.

Abstract: A global secondary index method for a distributed database, includes: obtaining original data to be written in response to a database writing request; writing the original data into the distributed database; performing global secondary index processing on the original data written into the distributed database to obtain global secondary index data; establishing global secondary index tables between the global secondary index data and data table primary keys in the distributed database; and writing the global secondary index tables into an index shards based on an asynchronous processing manner.

Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 1.70>f6/f?5.00; ?4.00?R14/R13??1.00; ?5.00?f2/f??2.00; 1.00?d8/d9?2.00. The camera optical lens can achieve excellent optical characteristics with a large aperture, wide-angle, and being ultra-thin.

Abstract: A file moving method, an electronic device, and a computer-readable storage medium are provided. An implementation includes: in response to receiving a file moving request, determining a source path and a destination path corresponding to a first moving operation corresponding to the request; determining whether the source path and the destination path corresponding to the first moving operation exist; in response to determining that both the source path and the destination path corresponding to the first moving operation exist, comparing at least one of the source path and the destination path corresponding to the first moving operation with a corresponding path of a source path and a destination path corresponding to the second moving operation; and determining, based on a result of the comparing, whether the first moving operation is to be performed.

Abstract: Discloses a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, a sixth lens with a positive refractive power, a seventh lens with a positive refractive power, an eighth lens with a negative refractive power and an ninth lens with a positive or negative refractive power. The camera optical lens satisfies: ?5.00?f1/f??2.00; 2.00?d7/d8?12.00. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.

Abstract: Provided is a camera optical lens, including, from object side to image side, a first lens having positive refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having positive refractive power; a sixth lens; a seventh lens having positive refractive power; an eighth lens having negative refractive power; and a ninth lens having negative refractive power. The camera optical lens satisfies 2.00?f1/f?3.50 and 2.00?d5/d6?9.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d5 denotes an on-axis thickness of the third lens, and d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens. The lens has large aperture, wide angle and ultra-thinness while having good optical performance.

Abstract: The present application discloses an energy storage cabinet, including a battery management module and a battery assembly. The battery management module is located on the side wall of the battery assembly, and the battery management module is electrically connected to the battery assembly. In the energy storage cabinet according to the present application, because the battery management module is located on the side wall of the battery assembly, the mounting height of the battery management module is effectively reduced, which is convenient for workers to control the battery management module, further facilitates the operation of the energy storage cabinet, and improves the safety of workers operating the energy storage cabinet.

Abstract: A stacking power supply cabinet is provided. The stacking power supply cabinet includes a top assembly and at least one battery module. In a case that the number of the battery module is more than one and the multiple battery modules are stacked sequentially from top to bottom, an electric connection path for power supply and/or storage is established among the stacked multiple battery modules, and the electric connection path is conducted via a power transmission line in the top assembly, and then the battery modules are charged. Thus, in the installation process of the power supply cabinet, the electric connection path for the power supply and/or storage among the multiple stacked battery modules is uncharged before the top assembly is installed, thereby reducing the risk of electric shock to the human body and improving the safety during the installation process of the stacking power supply cabinet.

Abstract: Embodiments of the present disclosure disclose a method, apparatus and system for controlling mounting of a file system. A specific embodiment of the method includes: receiving network attribute information of a target client sent by a target server as first network attribute information; determining, based on the first network attribute information, whether the target client has permission to mount to a target file system; and sending, in response to determining that the target client has permission to mount to the target file system, an identification of the target file system to the target server.