Abstract: An ore dressing process for medium-grade and low-grade mixed collophanite includes the following steps: S1; crushing ores to obtain crushed ores; S2: screening the crushed ores to obtain fine-fraction ores and coarse-fraction ores divided into at least two size fractions; S3: performing a photoelectric separation to the coarse-fraction ores of different size fractions to obtain photoelectric separation concentrates and photoelectric separation tailings of each size fraction; S4: combining the photoelectric separation concentrates of the each size fraction to obtain pre-enriched concentrates; S5: combining the fine-fraction ores and the pre-enriched concentrates, and then performing an ore grinding to obtain minerals to be separated; S6: adding water to the minerals to be separated to obtain a floatation pulp, and then performing a floatation to obtain phosphate concentrates and tailings.

Abstract: The present invention relates to a modified polyurethane prepolymer, a two-component polyurethane adhesive and the preparation method thereof. The modified polyurethane prepolymer is prepared from the raw materials comprising the following components: polyurethane prepolymer and graphene oxide; wherein, the polyurethane prepolymer is prepared from the raw materials comprising the following components: copolymer containing ureidopyrimidinone groups and aliphatic isocyanate; wherein, the copolymer containing ureidopyrimidinone groups is formed by copolymerization of the raw materials comprising the following components: alkyl acrylate ureidopyrimidinone, and hydroxyethyl alkyl acrylate; wherein, the alkyl acrylate ureidopyrimidinone has the structure shown in Formula (I); and the hydroxyethyl alkyl acrylate has the structure shown in Formula (II). The two-component polyurethane adhesive containing the modified polyurethane prepolymer has excellent mechanical properties and aging resistance simultaneously.

Abstract: Provided herein are systems and methods for performing localization within a patient. A method of localization within a body comprises providing at least one processor coupled to at least one data storage device, establishing and calibrating a localization coordinate system within a body by executing a first localization mode by the at least one processor, recalibrating the localization coordinate system by executing a second localization mode by the at least one processor, and localizing a device within the localization coordinate system using the first localization mode and the second localization mode, by the at least one processor. The first localization mode can be an impedance-based localization mode and the second localization mode can be magnetic-based localization mode, or vice versa.

Abstract: A photocatalytic device includes a substrate and an array of conductive projections supported by the substrate and extending outward from the substrate. Each conductive projection of the array of conductive projections has a semiconductor composition configured for charge carrier generation in response to light radiation. Each conductive projection of the array of conductive projections is decorated with a catalyst arrangement, the catalyst arrangement including a parental Group IB metal and a secondary platinum group metal.

Abstract: Disclosed is a cabinet pull-out basket, including an overall pull-out basket structure. The overall pull-out basket structure includes: a base, where a sliding cavity is arranged on the base, a fixing sucker is arranged on a side of the base, and a receding opening is formed at a bottom of the sliding cavity; a storage box slidably connected to inside of the sliding cavity, where anti-drop hooks are arranged at a bottom of the storage box, and the anti-drop hooks abut against side edges of the receding opening; and a plurality of rollers arranged at an opening end of the sliding cavity or the bottom of the storage box. The base is fixed to a cabinet. The anti-drop hooks abut against side edges of the receding opening. Further, the rollers are arranged on a bottom surface of the base and at an opening end of the sliding cavity.

Abstract: A method for constructing and processing a machine learning task, a storage medium and an electronic apparatus are provided. The method includes: obtaining sample data configuration information corresponding to the machine learning task; performing arrangement according to the sample data configuration information to obtain a task operation procedure diagram, wherein the task operation procedure diagram includes a plurality of operation sub-procedures, and one operation sub-procedure corresponds to one sub-interval of the target time interval, and is used to obtain sample data in a corresponding sub-interval from the target sample data source and determine machine learning task data based on the sample data; and controlling the plurality of operation sub-procedures to be executed in parallel based on the vertical joining, to obtain target machine learning task data with a vertical joining relationship, and constructing the machine learning task based on the target machine learning task data.

Abstract: A photocatalytic device includes a substrate and an array of conductive projections supported by the substrate and extending outward from the substrate. Each conductive projection of the array of conductive projections has a semiconductor composition configured for charge carrier generation in response to solar radiation. Each conductive projection of the array of conductive projections is decorated with a co-catalyst arrangement. The co-catalyst arrangement includes gold and an oxide material.

Abstract: Intraluminal ultrasound imaging devices, methods, and systems are provided. Some embodiments of the present disclosure include intraluminal devices configured to navigate and maneuver tortuous vasculature of a patient. For example, an intravascular imaging device can include a flexible support member at a distal portion of the imaging device. The flexible support member may support a plurality of ultrasound transducers and a plurality of control circuits. The flexible support member includes a flexible joint portion between a transducer portion and a controller portion. Introducing a flexible joint portion between the transducer portion and the controller portion can provide for greater flexibility of the imaging device and enable the device to navigate tortuous regions of a patient's anatomy.

Abstract: Provided herein are systems and methods for performing localization within a patient. A method of localization within a body comprises providing at least one processor coupled to at least one data storage device, establishing and calibrating a localization coordinate system within a body by executing a first localization mode by the at least one processor, recalibrating the localization coordinate system by executing a second localization mode by the at least one processor, and localizing a device within the localization coordinate system using the first localization mode and the second localization mode, by the at least one processor. The first localization mode can be an impedance-based localization mode and the second localization mode can be magnetic-based localization mode, or vice versa.

Abstract: A working machine equipped with vehicle wheels, a working unit, and a recognition unit that recognizes a surrounding vicinity of the working machine.

Abstract: Apparatus and methods are provided for improving thermal control, including collecting data of a plurality of systems, each of the plurality of systems including at least one first cooling element and at least one first heat-generating element; conducting a first simulation using a simulation model based on the collected data to generate a first set of simulation results; conducting a first training on a control system using the first set of simulation results to obtain a first trained control system; and using the first trained control system to monitor a field system with a space having at least one second cooling element and at least one second heat-generating element and to control the at least one second cooling element and the at least one second heat-generating element.

Abstract: Examples direct current-direct current (DC-DC) converter are described. One example DC-DC converter includes three ports and a switch capacitor (SC) circuit. A first port and a second port are input and output ports, and a third port is grounded. The SC circuit includes three capacitors and eight switching transistors. A connection relationship between the three capacitors and eight switching transistors determines that an end of one capacitor in the three capacitors is grounded, and the other two capacitors are connected between the switching transistors.

Abstract: A graphdiyne dispersion liquid, a bi-component polyurethane adhesive and a preparation method therefor, wherein the graphdiyne dispersion liquid is prepared from graphdiyne powder and a polyurethane dispersant; component A of the bi-component polyurethane adhesive comprises a polyurethane prepolymer, an additive and a graphdiyne dispersion liquid, and component B of the bi-component polyurethane adhesive comprises polyol, a catalyst, and a graphdiyne dispersion liquid. The bi-component polyurethane adhesive has relatively good anti-ultraviolet weather resistance and bubble suppression performance during a curing process, and has a potential application value in high-end industrial fields.

Abstract: Provided are a polyurethane phase-change nanocapsule, a phase-change polyurethane pouring sealant and a preparation method therefor. The polyurethane phase-change nanocapsule is a nanocapsule formed by coating a phase-change material with an amphiphilic block copolymer. The oleophilic end of the amphiphilic block copolymer is a polyurethane chain segment, and the hydrophilic end is a methoxy polyethylene glycol chain segment. The polyurethane phase-change nanocapsule is added, such that the two-component phase-change polyurethane pouring sealant has a temperature control advantage, and has an excellent enthalpy value and heat-conducting properties while maintaining a low viscosity. In the field of electronic engineering, particularly in the field of electronics needing temperature control, the pouring sealant has an application value.

Abstract: A method for controlling peak saving by wind power grid. The method includes: S1: evaluating dispatchability of a cluster virtual wind power unit; S2: developing a method for calculating a dispatchability index of the cluster virtual wind power unit; S3: analyzing a source-load peak-shaving resource strategy; and S4: distributing a control strategy for tie-line peak shaving. The present disclosure has the following beneficial effects: In the present disclosure, real-time dispatchability of wind power participating in real-time power balance is first analyzed, specific evaluation indexes and calculation methods are provided, and calculation examples are given for verification. Then, an optimized real-time dispatch strategy is provided based on demand-side response resources, and DC and AC tie-lines are coordinated for operation. The peak shaving control method for emergent source-grid coordination when a sending-end power grid is faulty can ensure normal operation.

Abstract: An electrode of a chemical cell includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, each conductive projection of the array of conductive projections having a semiconductor composition for reduction of carbon dioxide (CO2) in the chemical cell, and a catalyst arrangement disposed along each conductive projection of the array of conductive projections, the catalyst arrangement including a copper-based catalyst and an iron-based catalyst for the reduction of carbon dioxide (CO2) in the chemical cell.