Abstract: Disclosed is a floating platform integrating wave attenuation with marine energy power generation and a working method thereof, the platform includes a breakwater, a tuned damping wave energy converter, and an offshore floating wind turbine. The breakwater includes double-cylindrical-boxes and connecting bulkheads, and a moon pool area is formed in a middle of the breakwater; the offshore floating wind turbine and the tuned damping wave energy converter are both connected to the breakwater through a connecting rod. A circular groove is formed on an inner side of each of the connecting bulkheads of the breakwater. The breakwater provides the floating base and power generation environment for the offshore floating wind turbine and the tuned damping wave energy converter, and a plurality of the tuned damping wave energy converters can be disposed, and are evenly distributed beneath the offshore floating wind turbine.

Abstract: A heat recovery system for hydrogen production with a solid oxide electrolysis cell, including a water storage tank, a solar cell panel, a low-temperature metal hydrogen storage tank, an evaporator, a high-temperature metal hydrogen storage tank, a heat exchanger, a solid oxide electrolysis cell, a separator, and a reactor is provided. After water in the water storage tank sequentially passes through the solar cell panel, the low-temperature metal hydrogen storage tank, the evaporator, the high-temperature metal hydrogen storage tank, and the heat exchanger for multi-stage heat exchange, water vapor reaching the working temperature enters the solid oxide electrolysis cell. The hydrogen generated after electrochemical reaction and unused water vapor flow out from the solid oxide electrolysis cell, firstly exchange heat with to-be-reacted water vapor through the heat exchanger and then enter the separator.

Abstract: An intelligent electromagnetic induction heating leveling system, comprising: a trolley type leveler, an unmanned aerial vehicle temperature measurement device, indoor positioning devices used for converting position information of a trolley of the trolley type leveler and the unmanned aerial vehicle temperature measurement device into position parameters, and a control system. The system can perform, according to preset data parameters, data transmission by means of a wireless local area network and the unmanned aerial vehicle temperature measurement device and control the unmanned aerial vehicle temperature measurement device to move to a specified position. The system intelligently controls the leveling temperature and leveling time of a leveling area, and thus may be suitable for leveling of weld joints having different sizes and depths, and achieve a good leveling effect. Also provided is an intelligent electromagnetic induction heating leveling method.

Abstract: Disclosed is a microreactor for continuous flow synthesis of 2,5-furandicarboxylic acid, the microreactor includes a first container, a collection device, an injection pump, a first flow pump, a second flow pump, a first microreactor substrate, ion exchange resin adsorption pipes, activated carbon adsorption pipes, a second microreactor substrate, an oxygen source, a first T-connector, a second T-connector, and a third T-connector; where the first container is connected to the first T-connector via the first flow pump, the injection pump is connected to the first T-connector, the third T-connector is connected to the first T-connector and the first microreactor substrate, respectively, the first microreactor substrate is connected to the ion exchange resin adsorption pipes, the activated carbon adsorption pipes, the second T-connector, and the second microreactor substrate in sequence, and the oxygen source is connected to the second T-connector.

Abstract: Disclosed is a floating platform integrating wave attenuation with marine energy power generation and a working method thereof, the platform includes a breakwater, a tuned damping wave energy converter, and an offshore floating wind turbine. The breakwater includes double-cylindrical-boxes and connecting bulkheads, and a moon pool area is formed in a middle of the breakwater; the offshore floating wind turbine and the tuned damping wave energy converter are both connected to the breakwater through a connecting rod. A circular groove is formed on an inner side of each of the connecting bulkheads of the breakwater. The breakwater provides the floating base and power generation environment for the offshore floating wind turbine and the tuned damping wave energy converter, and a plurality of the tuned damping wave energy converters can be disposed, and are evenly distributed beneath the offshore floating wind turbine.

Abstract: An ultrasonic-stirring narrow gap welding system and a welding method, and the ultrasonic-stirring narrow gap welding system includes a welding machine power source, a wire feeder, a narrow gap welding torch, and an ultrasonic stirring subsystem. A welding wire is fed into a narrow gap through the narrow gap welding torch provided above a groove, to generate an arc for welding. The ultrasonic stirring subsystem includes a stirrer and an ultrasonic device, a stirring rod is connected to the ultrasonic device and inserted into a molten pool to form a preset angle relative to the welding wire for stirring, and an ultrasonic-stirring narrow gap welding mode is realized.

Abstract: An intelligent electromagnetic induction heating leveling system, comprising: a trolley type leveler, an unmanned aerial vehicle temperature measurement device, indoor positioning devices used for converting position information of a trolley of the trolley type leveler and the unmanned aerial vehicle temperature measurement device into position parameters, and a control system. The system can perform, according to preset data parameters, data transmission by means of a wireless local area network and the unmanned aerial vehicle temperature measurement device and control the unmanned aerial vehicle temperature measurement device to move to a specified position. The system intelligently controls the leveling temperature and leveling time of a leveling area, and thus may be suitable for leveling of weld joints having different sizes and depths, and achieve a good leveling effect. Also provided is an intelligent electromagnetic induction heating leveling method.

Abstract: Disclosed is an underwater acoustic communication system based on a filter bank joint sub-carrier multidimensional index modulation and a method thereof. The system includes a transmitting terminal and a receiving terminal, the method is: conducting a joint index modulation at the transmitting terminal, firstly selecting an activated prototype pulse index by using a part of bits of a FBMC symbol, grouping the remaining transmitted information bits and all sub-carriers; using a part of the bits in each group to select the activated sub-carrier index, modulating the remaining bits to the activated sub-carriers by a constellation symbol mapping, forming a transmission signal after a filter bank modulation; and demodulating three parts of transmitted bits at a receiving terminal after an action of underwater acoustic channel, and recovering the original data bits by combining each part of decoding results.

Abstract: The present invention relates to a boron hydroxyl-containing organic compound having a structural formula shown in formula I. The present invention also relates to a method for preparing the boron hydroxyl-containing organic compound and use thereof in an organic electronic device, particularly an organic light-emitting diode. The present invention further relates to an organic electronic device, particularly an organic light-emitting diode, including the boron hydroxyl-containing organic compound according to the present invention and use thereof in display and lighting technology. By optimizing the structure of the device and altering the concentration of the boron hydroxyl-containing organic compound in the substrate, the optimal device performance can be achieved so as to produce an OLED device with high efficiency, high brightness and high stability, which provides a better material option for use in full-color display and lighting.

Abstract: Disclosed is an underwater acoustic communication system based on a filter bank joint sub-carrier multidimensional index modulation and a method thereof. The system includes a transmitting terminal and a receiving terminal, the method is: conducting a joint index modulation at the transmitting terminal, firstly selecting an activated prototype pulse index by using a part of bits of a FBMC symbol, grouping the remaining transmitted information bits and all sub-carriers; using a part of the bits in each group to select the activated sub-carrier index, modulating the remaining bits to the activated sub-carriers by a constellation symbol mapping, forming a transmission signal after a filter bank modulation; and demodulating three parts of transmitted bits at a receiving terminal after an action of underwater acoustic channel, and recovering the original data bits by combining each part of decoding results.

Abstract: Disclosed is a control method of a damper of a variable-air-volume air distributor and a control system thereof, mainly comprising a volume adjusting valve for the variable-air-volume air distributor, a valve actuator, a BP neural network-based main controller, a data collector and a user operation panel. The control method thereof is to use, mainly based on the collected room temperature and static pressure at the inlet of the air distributor, the BP neural network predictive model to establish a nonlinear model of temperature & static pressure and valve opening, perform training and optimization, and optimize the output valve opening to obtain and label an optimal value as the set value of the controller to control the action of the valve actuator, thereby realizing an automatic variable air volume.

Abstract: A split-type multifunctional underwater arc welding power supply including a shore power supply module and an underwater power supply module is provided. The shore power supply module comprises a shore power supply main circuit unit and a shore power supply control unit. The shore power supply main circuit unit comprises an input filter circuit, an IGBT full-bridge inverter circuit, an intermediate frequency transformer, and an output rectification filter circuit. The underwater power supply module comprises an underwater power supply main circuit unit and an underwater power supply control unit. The shore power supply module is provided on the shore, and the underwater power supply module is carried underwater.

Abstract: The present invention discloses an in-place non-contact detection method for a shaft workpiece. The method includes: establishing a detection system, calibrating the detection system and establishing a detection coordinate system; analyzing a pose of a workpiece in the detection system to establish a coordinate system of a workpiece clamping device; controlling the workpiece clamping device of a shaft workpiece processing machine tool to rotate, continuously acquiring data by a linear laser measuring instrument, and calculating and analyzing the acquired data to obtain an ideal reference axis of the shaft workpiece; continuously acquiring data of a detection part, and calculating and analyzing the acquired data to obtain actual machining precision of runout of a shaft neck of a camshaft; and continuously acquiring data of the detection part, and calculating and analyzing the acquired data to obtain machining precision of coaxiality of the shaft workpiece.

Abstract: A device includes a water storage tank, a control cabin and an operation cabin which are sequentially connected from top to bottom, the operation cabin includes a sealing zone and an operation zone, the sealing zone is located on an inner wall of the operation cabin, a pressure difference between an internal pressure and an external pressure is adjusted to make the maintenance enhancing device separated from or absorbed on a subsea pipeline, and the operation zone is located between the sealing zone and the subsea pipeline.

Abstract: A pyram-shaped deep-sea pressure-resistance shell and a design method therefor. The shell comprises a conical shell, an annular combined shell, a cylindrical shell, a flange bolt, and a perforated thick plate; a bottom end of the conical shell is connected with a top end of the annular combined shell, the conical shell being in communication with an interior part of the annular combined shell; the perforated thick plate blocks the bottom end of the annular combined shell, the perforated thick plate and the annular combined shell being connected by means of multiple flange bolts; the cylindrical shell is disposed inside the annular combined shell, a lower end of the cylindrical shell being inserted in a gap between the annular combined shell and the perforated thick plate.

Abstract: A split-type multifunctional underwater arc welding power supply, comprising: including a shore power supply module and an underwater power supply module is provided. The shore power supply module comprises a shore power supply main circuit unit and a shore power supply control unit. The shore power supply main circuit unit comprises an input filter circuit, an IGBT full-bridge inverter circuit, an intermediate frequency transformer, and an output rectification filter circuit. The underwater power supply module comprises an underwater power supply main circuit unit and an underwater power supply control unit. The shore power supply module is provided on the shore, and the underwater power supply module is carried underwater.

Abstract: The present invention provides a method for determining hydrogen sulfide (H2S) by headspace single-drop liquid phase microextraction and intelligent device colorimetry, which comprises: taking a silver-gold core-shell triangular nanosheet (Ag@Au TNS) as a nanodetection probe, in combination with an analysis method of headspace single-drop microextraction (HS-SDME), specifically extracting H2S volatilized from a sample to be detected by the nanodetection probe, and detecting H2S in the extracted sample with the help of the photographing function of an intelligent device and a color picking software. Compared with the prior art, the present invention adopts intelligent device colorimetry, with the limit of detection of about 65 nM and the linear range of 0.1-100 ?M, and the established method can be applied to the determination of H2S in actual samples such as egg white, milk and other opaque samples, and has the advantages of few procedures, simple operation, high detection efficiency and the like.

Abstract: A pyram-shaped deep-sea pressure-resistance shell and a design method therefor. The shell comprises a conical shell, an annular combined shell, a cylindrical shell, a flange bolt, and a perforated thick plate; a bottom end of the conical shell is connected with a top end of the annular combined shell, the conical shell being in communication with an interior part of the annular combined shell; the perforated thick plate blocks the bottom end of the annular combined shell, the perforated thick plate and the annular combined shell being connected by means of multiple flange bolts; the cylindrical shell is disposed inside the annular combined shell, a lower end of the cylindrical shell being inserted in a gap between the annular combined shell and the perforated thick plate.

Abstract: A water treatment system of coupling a heat pump with multi-effect evaporation that comprises a lithium bromide absorption-type heat pump circulation system, a multi-effect evaporation circulation system and a compression-type heat pump circulation system is provided. The vapor in a tail-end evaporator of the multi-effect evaporation circulation system is introduced into a generator in the absorption-type heat pump to release heat and condense. A dilute solution in an absorber of the absorption-type heat pump is introduced into a first-effect evaporator to be evaporated by a treated water, and a condensation heat of the vapor generated by the generator of the absorption-type heat pump is recovered by an evaporator of a compressor heat pump, and another air source evaporator absorbs heat from ambient air to supply heat for the generator by a heat pump condenser.

Abstract: The present disclosure discloses a system for intelligently leveling with an automatic temperature control function and a method thereof. The system includes a handcart-type leveller, indoor GPS positioning devices, an AGV trolley temperature measuring device and a control system. The control system processes position parameters of the AGV trolley temperature measuring device and the handcart-type leveller; converts the position parameters for the handcart-type leveller into position parameters for a leveling region, controlling the AGV trolley temperature measuring device to arrive at a lower part of the leveling region by a control chip and measuring temperatures in the leveling region; controlling an operation status of the AGV trolley temperature measuring device and transmitting data with the AGV trolley temperature measuring device.