Abstract: Disclosed in the present invention are a video generation method and apparatus, a device, and a computer readable storage medium. The method comprises: acquiring first information representing first light; acquiring second information of multiple first key points of a target object for multiple times; according to the first information and the second information obtained for multiple times, respectively generating multiple first key point fusion features corresponding to the first light ray; inputting the first information and the multiple first key point fusion features into a pre-trained neural light field (NeLF) model for multiple times in a paired manner, so as to obtain multiple static images of the target object; and synthesizing the multiple static images into a video.

Abstract: Disclosed is a method for smelting magnesium from dolomite by vacuum carbothermal reduction. The method includes: pressing a mixed powder of dolomite and coking coal to obtain a block; and heating the block directly to obtain a heated block, subjecting the heated block to a carbothermal reduction reaction in vacuum to obtain a reduced vapor, and condensing the reduced vapor to obtain crystalline magnesium, wherein the heating is conducted at a heating rate of ?12 K/min; and the carbothermal reduction reaction is held at a temperature of ?1,400 K for ?2 h.

Abstract: Disclosed in the present invention are a video generation method and apparatus, a device, and a computer readable storage medium. The method comprises: acquiring first information of a plurality of sampling points on first light; acquiring second information of a plurality of first key points of a target object multiple times; respectively generating a plurality of first key point fused features according to the first information and the second information; respectively offsetting spatial coordinates of the plurality of sampling points on the basis of the first key point fused features; inputting, in pairs, the offset spatial coordinates of the plurality of sampling points and the plurality of first key point fused features corresponding to the plurality of sampling points into a pre-trained neural radiation field model to obtain a plurality of static images of the target object; and synthesizing the images into a video of the target object.

Abstract: Provided is a recovery method for valuable metals in copper anode slime. By using the recovery method of the disclosure, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver in the copper anode slime are recovered. The method adopts two-step vacuum carbothermal reduction to replace reduction smelting of anode slime and stepwise blowing of noble lead in the traditional pyrometallurgy, and avoids the emission of arsenic-containing soot in the traditional process. The recovered gold-rich residue contains almost no base metals such as lead, bismuth, antimony, and arsenic. After subjecting the gold-rich residue to leaching gold by chlorination and reduction, a gold powder could be obtained therefrom with a lower content of base metals than traditional processes. Therefore, the method greatly reduces the amount of produced slag, shortens the production cycle, and reduces the loss of precious metals in the slag.

Abstract: A control system for a heating, ventilation, and air conditioning (HVAC) system is provided. The system controller includes a processor configured to receive an indoor temperature measurement or estimate and an indoor temperature setpoint and, while operating a compressor motor in a line operation mode or a drive operation mode, control a speed of at least one of an indoor fan motor or an outdoor fan motor based on the indoor temperature measurement to cause an indoor temperature to converge to the indoor temperature setpoint.

Abstract: A power tool includes a cylinder at least partially disposed in a housing, where gas is stored in the cylinder. The cylinder includes: an inflation nozzle, where the cylinder is inflated with the gas in advance through the inflation nozzle; an inflation valve, where the gas filled through the inflation nozzle flows through the inflation valve and then enters the cylinder; and a pressure relief valve disposed between the inflation nozzle and the inflation valve, where when a pressure of the gas filled through the inflation nozzle is greater than a first preset pressure, the filled gas is released through the pressure relief valve.

Abstract: The present invention discloses a device and method for non-destructive testing of mechanical properties and residual stress of pressure vessels. The device comprises a pressure vessel simulator, an indenter, and a moving mechanism; the indenter adjusts its testing position via the moving mechanism and performs non-destructive testing on the pressure vessel simulator; the pressure vessel simulator has an intermediate circumferential weld formed by butt welding of a first and second cylindrical section, and a first and second longitudinal weld formed by rolling and welding the first and second cylindrical sections together; the device further comprises a water inlet; the moving mechanism comprises two parallel horizontal guide rails and two parallel arc-shaped guide rails; the arc-shaped guide rails are vertically positioned above the horizontal guide rails and surround the pressure vessel simulator.

Abstract: Embodiments of the disclosure relate to an optical fiber ribbon. The optical fiber ribbon includes a plurality of subunits each including a subunit coating of a first material surrounding at least one optical fiber. The optical fiber ribbon also includes a ribbon matrix of a second material disposed around the plurality of subunits. A plurality of bonds are intermittently formed between adjacent subunits of the plurality of subunits. Each bond is formed by an interaction of the second material with the first material for the purpose of creating a first level of adhesion between the first and second materials at an outer surface of the subunit coating. The second material is inhibited from interacting with the first material in regions between the plurality of bonds along a length of the optical fiber ribbon to create a second level of adhesion that is less than the first level of adhesion.

Abstract: A microscope: includes a beam source producing a laser beam, an objective lens, and first and second scanning mirrors operating along perpendicular axes to reflect the laser beam to scan a specimen through the objective lens. A first pair of cylindrical lenses is positioned between the objective lens and the first scanning mirror at points along the straight line, with a focal point aligned with the first scanning mirror, to receive the reflected laser beam and provide it to the objective lens. A second pair of cylindrical lenses is positioned between the objective lens and the second scanning mirror along the straight line, with a focal point aligned with the second scanning mirror, to receive the reflected laser beam and provide it to the objective lens.

Abstract: Techniques for improving the performance of an autonomous vehicle (AV) by automatically annotating objects surrounding the AV are described herein. A system can obtain sensor data from a sensor coupled to the AV and generate an initial object trajectory for an object using the sensor data. Additionally, the system can determine a fixed value for the object size of the object based on the initial object trajectory. Moreover, the system can generate an updated initial object trajectory, wherein the object size corresponds to the fixed value. Furthermore, the system can determine, based on the sensor data and the updated initial object trajectory, a refined object trajectory. Subsequently, the system can generate a multi-dimensional label for the object based on the refined object trajectory. A motion plan for controlling the AV can be generated based on the multi-dimensional label.

Abstract: A cloud desktop security management and control method, and a device, a storage medium and a system are provided. The system includes: a management and control server, configured to configure a first cloud desktop and a second cloud desktop for a target user, configure a first security policy for the first cloud desktop, and configure a second security policy for the second cloud desktop; a client, respectively communicatively connected to the first cloud desktop and the second cloud desktop, wherein a display screen corresponding to the client includes a first screen corresponding to the first cloud desktop and a second screen corresponding to the second cloud desktop; and a target cloud desktop, configured to obtain an operation behavior triggered by the target user through a target screen, and respond to the operation behavior according to a security policy corresponding to the target cloud desktop.

Abstract: Examples are disclosed that relate to a head-mounted device (HMD) capable of providing adjustable vision correction. In one example, an HMD comprises an image source configured to generate image light, display optics configured to receive the image light and direct the image light toward an eye of a user, and a vision correction module positioned intermediate the display optics and the eye of the user. The vision correction module is configured to receive the image light output from display optics. The vision correction module comprises a first cylindrical lens, a second cylindrical lens aligned with the first cylindrical lens along a propagation axis, and an adjustment mechanism. The adjustment mechanism is configured to change a rotational orientation of the first cylindrical lens relative to the second cylindrical lens about the propagation axis to direct the image light to a designated location in the eye of the user.

Abstract: A surgical tool for piercing tissue of a body comprises a hollow external component (1) having a peripheral wall (11), an internal component (2) movable disposed inside the external component (1) and having a piercing head (21); when the piercing head (21) and the internal component (2) retract relative to the external component (1), the movable component (3) deforms partially, expands outwardly in a radial direction, and fills the bladder (6). The movable component can be deformed to expand outward in the radial direction, so as to make the bladder to expand, so that the surgical tool can be positioned on the body of the patient.

Abstract: A high-concentration high-entropy electrolyte and its preparation method and battery were disclosing in the present disclosure. A high-concentration high-entropy electrolyte, including a solvent, a first solute salt and added salts, the first solute salt is a solute salt with high solubility in the solvent, while the added salts are composed of at least three solute salts, the molar concentration range of the solute salts in the high-concentration high-entropy electrolyte is between 20 M-60 M, the molar concentration of the first solute salt is greater than 20 M, and the molar concentration of the first solute salt is greater than 50% of the molar concentration of the high-concentration high-entropy electrolyte. The sodium-carbon dioxide batteries assembled with high-concentration high-entropy electrolytes not only have higher power density, but also have excellent discharge specific capacity and rate performance.

Abstract: An out-of-band Ethernet interface switching apparatus, a multi-node server system, and a server device are provided by the present application. In the present application, the out-of-band management switch may be directly connected via one cable, thereby the quantity of ports of the out-of-band management switch is released, the hardware resource utilization of the server system is improved, the quantity of cables required for connection is reduced and the operation and maintenance cost of the system are helped to be reduced.

Abstract: Some embodiments of the teachings herein include a PCB module. An example comprises: a PCB support plate configured to for vertical assembly with a base plate via slot-column structure, wherein the base plate is assembled in a power electronic device; and a PCB configured to be assembled on the PCB support plate.

Abstract: The present disclosure discloses a lower carrier roller device for a belt conveyor having sweeping and cleaning functions, which comprises a lower carrier roller assembly and a sweeping roller brush assembly arranged on one side of the lower carrier roller assembly, wherein the sweeping roller brush assembly is fit with the lower carrier roller assembly; the lower carrier roller assembly comprises a lower carrier roller, which is arranged in a running direction of a return belt of the belt conveyor; and a surface of the lower carrier roller is configured to a rhombic grid shape; the sweeping roller brush assembly comprises a roller brush shaft and a roller brush arranged on the roller brush shaft; the roller brush shaft is arranged parallel to and below the lower carrier roller, and the roller brush is fit with the surface of the lower carrier roller. The present disclosure also discloses a belt conveyor comprising the lower carrier roller device for a belt conveyor.

Abstract: The present invention provides compounds, compositions thereof, and methods of using the same.

Abstract: Various examples relate to apparatuses, devices, methods and computer programs for an edge worker node and an edge server, to an edge worker node and an edge server, and to a system comprising an edge server and one or more edge worker nodes. An apparatus comprises processing circuitry to determine information on a network quality of a network connection between the edge worker node and an edge server, select, based on the network quality, a network configuration, the network configuration comprising at least one of a network protocol and a prioritization strategy for communicating via the network connection, and to communicate via the network connection according to the selected network configuration.

Abstract: A heating assembly, an atomization core, and an electronic cigarette. The heating assembly is arranged on the atomization core, and comprises a first contact, a second contact, and a first resistor, wherein the first resistor is fixedly arranged between the first contact and the second contact, and at least one closed heating area is arranged on the first resistor.