Abstract: An electronic device displays a first user interface; receives a first operation of a user; obtains first content of the first user interface in response to the first operation; displays a second user interface, where content displayed in the second user interface includes a text in the first content, and the second user interface covers a part of a display area of the first user interface; reads a first sentence in the content of the second user interface; and displays marking information of a text that is in the second user interface and that corresponds to the first sentence that is being read. Embodiments of this application are used for text reading.

Abstract: A catalyst for catalytic oxidation-deoxidation method of unsaturated hydrocarbon-containing gas has a carrier, an active component, a first co-agent component, and a second co-agent component loaded on the carrier respectively. The active component is one or more selected from the group consisting of oxides of Pt, Pd, Ru, Rh, Ag and Ir. The first co-agent component has one or more selected from the group consisting of a rare earth metal element, a group IVB metal element and a group VIII metal element; and the second co-agent component has one or more alkali metal element and alkaline earth metal element. The deoxidation method using the catalyst eliminates the need to add a reducing gas such as H2, allows hydrocarbons to react directly with oxygen to produce CO2 and H2O, achieves the goal of deoxidating a hydrocarbon-containing tail gas, and can prevent the generation of carbon deposits.

Abstract: The present disclosure discloses a modular five-degree-of-freedom magnetic levitation compressor rotor system and a control method, comprising a magnetically levitated rotor spindle and a drive motor arranged at a middle part of the magnetically levitated rotor spindle, a centrifugal impeller and a cooling impeller are respectively mounted at both ends of the magnetically levitated rotor spindle, an axial magnetic bearing assembly and a radial magnetic bearing assembly are sequentially arranged on the magnetically levitated rotor spindle between the drive motor and the centrifugal impeller, as well as on the magnetically levitated rotor spindle between the drive motor and the cooling impeller, the axial magnetic bearing assembly is a thrustless plate structure with a direct magnetic field coupling; the radial magnetic bearing assembly adopts a modular structure with segmented magnetic poles.

Abstract: Disclosed are a conductive assembly, an energizing apparatus, a laser-induced metallization device and a production line, solving a problem that if mounting accuracy of a pressing needle is not high or the pressing needle undergoes positional deviation during a pressing process, it is easy for the pressing needle to fail to contact a grid line, resulting in the pressing needle failing to conduct electricity. The conductive assembly includes a first mounting component and a plurality of pressing needles. The plurality of pressing needles are separately connected to the first mounting component. The pressing needle includes a contact portion, and the plurality of contact portions are arranged in a first direction and arranged in at least two rows in a direction perpendicular to the first direction.

Abstract: Provided are a thermal-hydrological-mechanical-chemical coupling exploitation experimental device for a deep oil and gas reservoir, and a simulation system. The device includes a loading bin, a sample holding bin, a true triaxial pressure loading mechanism arranged on the loading bin, a temperature control system arranged on the true triaxial pressure loading mechanism, and a monitoring system having a detection element arranged in the rock sample and the sample holding bin. A sample entry port is formed in one side surface of the loading bin. The sample holding bin has one end slidably arranged in the sample entry port, can be sealed and connected with the sample entry port, and is configured for placing and fixing a rock sample. Multiple through holes are uniformly formed on an outer end cover of the sample holding bin and are configured for detecting and adding water, gas, and oil.

Abstract: A method for predicting a drawn point of a stylus includes obtaining a plurality of reported points of a stylus, determining a reported point prediction model based on the reported points, performing prediction using the reported point prediction model to obtain at least one predicted point, and drawing the at least one predicted point and displaying the drawn predicted point.

Abstract: A polyvinyl chloride (PVC) foamed ceiling panel and a fabrication method thereof are disclosed. The PVC foamed ceiling panel is made of a PVC resin powder, a filler, a foaming regulator, a composite foaming agent, a calcium-zinc stabilizer, a lubricant, a pigment, a weather resistance modifier, a smoke suppressant, and a flame retardant. The PVC foamed ceiling panel has the advantages of heat resistance, matting, smoke suppression, flame retardancy, environmental friendliness, light weight, small thickness, safety, long-term action, long service life, wide use range, and the like, and can be used for suspended ceilings in residential buildings, office buildings, exhibition halls, conference halls, and the like and for various decorations. The fabrication method of the PVC foamed ceiling panel has the advantages of low cost, high performance, scientific rationality, and simple and easy operation.

Abstract: The present invention discloses an optimizing method for an AI accelerator and an AI accelerator. The optimizing method optimizes the AI accelerator through obtaining target neural network architecture by genetic programming, and includes: preparing required raw data, removing abnormal data, annotating based on different data types to obtain annotated data, and selecting part of the annotated data as a training set; determining search space of genetic programming, defining function set and terminal set of genetic programming, and performing preprocessing, extracting features, concatenating features, regressing and result outputting on the annotated data; defining fitness function used in genetic programming to search for optimal individuals; and the training set performing to search for obtaining the target neural network architecture.

Abstract: The present invention relates to the field of energy chemical industry, and disclosed are a gliding arc plasma reactor, and a method for converting methane by means of plasma. The reactor comprises a reactor chamber and a gliding arc plasma generator arranged in the reactor chamber, wherein the gliding arc plasma generator comprises at least two arc surface electrodes which are symmetrically distributed, such that a discharge area can be formed between the arc surface electrodes. According to the gliding arc plasma reactor provided in the present invention, the conversion rate of methane can be significantly improved when methane is converted into olefin; the selectivity of ethylene in the product is improved; and carbon deposition is significantly reduced. In addition, compared with a traditional process for preparing olefin from methane, no CO2 is generated; the ignition and explosion risk is avoided; and the reactor is safer and more environmentally friendly.

Abstract: The present application relates to a bidirectional digital switching power amplifier based on a magnetic suspension drive platform and its multi-step current predictive control method. The control method includes the following steps: establishing a prediction model of a bidirectional digital switching power amplifier; introducing a feedback correction term for a closed loop prediction; calculating an optimal modulation duty cycle through a value function; generating, according to the obtained modulation duty cycle, four PWM drive signals by a pulse width modulation module to control four switch tubes respectively to achieve current prediction control. The present application effectively improves the system control accuracy with small steady-state error, small on-line computation amount, simple algorithm, easy digital realization, and good practical value and application prospect.

Abstract: The invention provides a heat-storage medium conveying system for a solar-thermal power plant. The system includes a high-level tank subsystem including a high-level tank used to store the heat-storage medium. The system further includes a heat-storage medium transport subsystem. The high-level tank subsystem is connected with the heat-storage medium transport subsystem. The heat-storage medium transport subsystem includes a low-level tank. A mounting height of the low-level tank is lower than that of the high-level tank. A volume of the low-level tank is smaller than a volume of the high-level tank. The heat-storage medium can enter the low-level tank from the high-level tank partially or completely by its own gravity. The low-level tank is provided with a conveying pump, and the heat-storage medium is pumped out of the low-level tank through the conveying pump.

Abstract: An electronic device displays a first user interface; receives a first operation of a user; obtains first content of the first user interface in response to the first operation; displays a second user interface, where content displayed in the second user interface includes a text in the first content, and the second user interface covers a part of a display area of the first user interface; reads a first sentence in the content of the second user interface; and displays marking information of a text that is in the second user interface and that corresponds to the first sentence that is being read. Embodiments of this application are used for text reading.

Abstract: The present disclosure belongs to the technical field of PVC foam co-extruded sheets, and particularly relates to a wide low-temperature impact-resistant and bending-resistant PVC foam co-extruded sheet and a preparation method thereof. The PVC foam co-extruded sheet of the present disclosure includes a core layer and a skin layer. Raw materials of the core layer include PVC resin powder, a silicone-methyl methacrylate-ethyl acrylate composite low-temperature toughening and reinforcing agent, a filler, a foaming regulator I, a white foaming agent, a calcium-zinc stabilizer, a cold-resistant plasticizer, stearic acid, polyethylene wax, and oxidized polyethylene wax.

Abstract: A detection element and a verification system are disclosed. The detection element includes a detection end for contacting a feature portion of the osteotomy guide tool; and a positioning target connected to the detection end and configured to provide a pose parameter of the feature portion of the osteotomy guide tool in a coordinate system of a trackable element. With this configuration, the osteotomy guide tool can be verified to avoid deformation of the osteotomy guide tool during repeated use or transportation, affecting its positioning accuracy and affecting the operation.

Abstract: The present disclosure belongs to the technical field of PVC foam co-extruded sheets, and particularly relates to a wide low-temperature impact-resistant and bending-resistant PVC foam co-extruded sheet and a preparation method thereof. The PVC foam co-extruded sheet of the present disclosure includes a core layer and a skin layer. Raw materials of the core layer include PVC resin powder, a silicon-acrylic composite low-temperature toughening and reinforcing agent, a filler, a foaming regulator I, a white foaming agent, a calcium-zinc stabilizer, a cold-resistant plasticizer, stearic acid, polyethylene wax, and oxidized polyethylene wax.

Abstract: An osteotomy calibration method, calibration device, and an orthopedic surgery system are provided by present application. Firstly using the osteotomy calibration device to obtain the calculated position information of the current osteotomy plane, and then determining a position error between the calculated position information and a predetermined position information of a planned osteotomy plane, and if the position error exceeds a preset value, calculating and transmitting a relocation information to a robotic arm to control and relocate the robotic arm. By comparing and identifying the position error between the current osteotomy plane formed by the first osteotomy and the planned predetermined osteotomy plane, relocating the robotic arm, and performing a secondary correction of the osteotomy plane. In addition, by relocating the robotic arm and secondary correction of the osteotomy plane, additional bone nails which is to fix the navigation tool to the bone can be avoided.

Abstract: A method for correcting position of an osteotomy guide tool is disclosed. A trackable element mounted on the osteotomy guide tool or on the robotic arm tracks the position of the osteotomy guide tool and generates position information of the trackable element. According to the current position and the desired position of the trackable element, a robotic arm drives the osteotomy guide tool and the trackable element to move, until the trackable element is moved to the desired position. This method does not need to consider the absolute position accuracy of the robotic arm, and does not rely on the experience of the surgeon. The tool has several guiding features, which can provide guides for osteotomy operations, so that the same osteotomy guide tool can perform multiple operations of osteotomy and punching, thus greatly reducing the operation time and improving the operation efficiency.

Abstract: A flexible mechanical arm control method and a robot system. The control method comprises steps of: obtaining a total amount of angular displacement of a joint output end of the flexible mechanical arm (110) along a first direction when a load on the joint output end changes; driving the joint output end to move in a second direction according to the total amount of angular displacement, so that the joint output end returns to a position and posture before the load changes; the second direction is opposite to the first direction. According to the method, the position and posture of the joint output end can be maintained when the load on the joint output end of the flexible mechanical arm (110) changes, so as to facilitate a doctor to execute predetermined surgical operation in the fixed position and posture.

Abstract: Described are a low temperature plasma reaction device and a hydrogen sulfide decomposition method. The reaction device includes: a first cavity; a second cavity, the second cavity being embedded inside or outside the first cavity; an inner electrode, the inner electrode being arranged in the first cavity; an outer electrode; and a barrier dielectric arranged between the outer electrode and the inner electrode. The hydrogen sulfide decomposition method includes: implementing dielectric barrier discharge at the outer electrode and the inner electrode of the low temperature plasma reaction device, introducing a raw material gas containing hydrogen sulfide into the first cavity to implement a hydrogen sulfide decomposition method, and continuously introducing a thermally conductive medium into the second cavity in order to control the temperature of the first cavity of the low temperature plasma reaction device.

Abstract: The present disclosure provides a surgical robot including a control system, a force identification system, a robotic arm system and a navigation system, the robotic arm system including a robotic arm, a robotic arm terminal detachably connected to a trackable element. The navigation system acquires and provides a registration point of interest on an object to the robotic arm system. The robotic arm system controls movements of the robotic arm to drive the trackable element to move to the registration point of interest. The force identification system detects and provides a force applied to the robotic arm terminal to the control system. The control system determines whether the trackable element has moved to the registration point of interest on the object. The present disclosure also provides a method for bone registration of the surgical robot.