Abstract: An ultrasonic extraction device for plant polyphenols is provided, which includes an ultrasonic processor system, configured for conducting ultrasonic-assisted enzymatic hydrolysis on mixed cellulase solution and plant raw material suspension to extract plant polyphenols; a reactor flow system, including a first reactor flow subsystem, wherein the first reactor flow subsystem is configured for mixing cellulase solution and plant raw material suspension and conveying mixed cellulase solution and plant raw material suspension into the ultrasonic processor system, and the mixed cellulase solution and plant raw material suspension can circulate in the ultrasonic processor system; and a reactor control system, configured for detecting temperature in the ultrasonic processor system and concentration of plant polyphenols in the solution after reaction in the ultrasonic processor system, and controlling working conditions of the ultrasonic processor system and the reactor flow system accordingly.

Abstract: Disclosed are an oil-in-water (O/W) emulsion gel and a preparation method and use thereof, and a fat substitute. The O/W emulsion gel includes: starch nanoparticles with a content of 8 g/L to 40 g/L, curdlan with a content of 10 g/L to 30 g/L, an oil with a volume fraction of 10% to 30%, and water. The O/W emulsion gel could be used to prepare a fat substitute, especially the fat substitute prepared by 3D printing with various complex models.

Abstract: An integrated system for art examination includes a power module, an information receiving and a storage module, an information processing module, a control module, a display module, a paper printing module, and a paper processing module; the information receiving and storage module is used to receive and transmit an examinees registration information, an examination room information and an on-site identity information to the information processing module; the information processing module is used to verify whether the examinees registration information is consistent with the on-site identity information and transmits a conclusion to the control module; the control module controls the display module, the paper printing module and the paper processing module; the display module is used to display information to guide an exam worker how to operate, and an input of the examinee's on-site identity information is completed on the display module through a human-computer interaction.

Abstract: An AR-based supplementary teaching system for guzheng and method thereof, the system includes an AR device, a data processing device and positioning devices for key positions, the data processing device is signal-connected to the AR device, and the positioning devices is installed on the guzheng code of guzheng, the positioning devices corresponds to the guzheng code of guzheng one by one; the AR device is used to obtain real scene data; the data processing device is used to guzheng and the positioning devices identify and generate string distribution data; also used to obtain operation instruction based on user actions, execute the operation instruction and generate virtual data; the AR device is also used to convert all data based on the string distribution data The virtual data and the real scene data are superimposed and displayed.

Abstract: An AR-based supplementary teaching system for guzheng and method thereof, the system includes an AR device, a data processing device and positioning devices for key positions, the data processing device is signal-connected to the AR device, and the positioning devices is installed on the guzheng code of guzheng, the positioning devices corresponds to the guzheng code of guzheng one by one; the AR device is used to obtain real scene data; the data processing device is used to guzheng and the positioning devices identify and generate string distribution data; also used to obtain operation instruction based on user actions, execute the operation instruction and generate virtual data; the AR device is also used to convert all data based on the string distribution data The virtual data and the real scene data are superimposed and displayed.

Abstract: An integrated system for art examination includes a power module, an information receiving and a storage module, an information processing module, a control module, a display module, a paper printing module, and a paper processing module; the information receiving and storage module is used to receive and transmit an examinees registration information, an examination room information and an on-site identity information to the information processing module; the information processing module is used to verify whether the examinees registration information is consistent with the on-site identity information and transmits a conclusion to the control module; the control module controls the display module, the paper printing module and the paper processing module; the display module is used to display information to guide an exam worker how to operate, and an input of the examinee's on-site identity information is completed on the display module through a human-computer interaction.