Abstract: An electric heating device having an air channel includes an upper cover component and a lower shell component. A heater component is arranged in a lower shell of the lower shell component, and includes a heater shell, a heating member and a heating member base arranged in the heater shell. A ventilation portion is arranged at a heating member base to guide an air flow to the heating member, and is matched with a first air inlet on the lower shell and a second air inlet on the heater shell. The air flow is led to the heating member from an outside of the lower shell through the first air inlet, the second air inlet, and the ventilation in sequence.

Abstract: The invention discloses a starch-based multi-channel airflow unit and a preparation method and an application thereof. The preparation method of the present invention comprises the following steps: melting a polylactic acid, wherein a temperature of a first temperature control zone is 135° C. to 145° C., a temperature of a second temperature control zone is 175° C. to 185° C., a temperature of a third temperature control zone is 190° C. to 200° C., and a temperature of a fourth temperature control zone is 175° C. to 185° C.; gelatinizing a starch-based material, adding the starch-based material in the third temperature control zone and fully mixing the mixture; adding a polyol in the third temperature control zone, and fully mixing the mixture; and extruding out the mixed material through twin screws, sizing in vacuum, cooling and sizing, and winding and cutting to obtain the starch-based multi-channel airflow unit.

Abstract: A lithium-ion battery separator with high-temperature resistance, a preparation method thereof and a lithium-ion battery prepared therefrom fall within the field of lithium-ion battery separators. The separator has a thickness of 3.5-30 ?m, a porosity of 30-80%, an adjustable pore size of 20-2000 nm, a biaxial tensile strength of ?50 MPa, an air permeability of ?400 s/100 cc, and a breaking temperature of ?160° C. The preparation method comprises the following steps: mixing, melting, and plasticizing 20%-60% of a polypropylene main material, 2%-10% of a solubilizer, 30%-80% of a solvent. 0.1%-5% of a nucleating aid and/or 0.1%-1% of an antioxidant, carrying out twin-screw extrusion, carrying out thermally induced phase separation to obtain a cast sheet, and carrying out cast sheet stretching, extraction, and post-treatment or directly carrying out extraction and post-treatment.

Abstract: A method and an apparatus for generating a face rotation image are provided. The method includes: performing pose encoding on an obtained face image based on two or more landmarks in the face image, to obtain pose encoded images; obtaining a plurality of training images each including a face from a training data set, wherein presented rotation angles of the faces included in the plurality of training images are the same; performing pose encoding on a target face image based on two or more landmarks in the target face image in the foregoing similar manner, to obtain pose encoded images, wherein the target face image is obtained based on the plurality of training images; generating a to-be-input signal based on the face image and the foregoing two types of pose encoded images; and inputting the to-be-input signal into an face rotation image generative model to obtain a face rotation image.

Abstract: This application provides a method and an apparatus for generating a face rotation image. The method includes: performing pose encoding on an obtained face image based on two or more landmarks in the face image, to obtain pose encoded images; obtaining a plurality of training images each including a face from a training data set, where presented rotation angles of the faces included in the plurality of training images are the same; performing pose encoding on a target face image based on two or more landmarks in the target face image in the foregoing similar manner, to obtain pose encoded images, where the target face image is obtained based on the plurality of training images; generating a to-be-input signal based on the face image and the foregoing two types of pose encoded images; and inputting the to-be-input signal into an face rotation image generative model to obtain a face rotation image.

Abstract: A phase analog coherent demodulation system includes a difference frequency and pulse generator configured to generate a pulsed light and a continuous light with different frequency from the pulsed light, a controller, and an I/Q demodulation module. The controller locks the frequency difference signal of the pulse light, and the pulsed light generates the backward scattered light of constant frequency in the measured medium, and the backward scattered light returns along the original path and mixing beat with the continuous light in the I/Q demodulation module, the difference frequency electrical signals of the two optical signals are obtained. The I/Q demodulation module orthogonally demodulates the difference frequency electrical signal by using the frequency difference signal of the pulsed light and the continuous light as the fundamental frequency signal of the orthogonal demodulation, to detect phase information of the vibration signal.

Abstract: A phase analog coherent demodulation system includes a difference frequency and pulse generator configured to generate a pulsed light and a continuous light with different frequency from the pulsed light, a controller, and an I/Q demodulation module. The controller locks the frequency difference signal of the pulse light, and the pulsed light generates the backward scattered light of constant frequency in the measured medium, and the backward scattered light returns along the original path and mixing beat with the continuous light in the I/Q demodulation module, the difference frequency electrical signals of the two optical signals are obtained. The I/Q demodulation module orthogonally demodulates the difference frequency electrical signal by using the frequency difference signal of the pulsed light and the continuous light as the fundamental frequency signal of the orthogonal demodulation, to detect phase information of the vibration signal.