Abstract: The present invention discloses a maleic anhydride modified voltage stabilizer, a preparation method, and use thereof, which belongs to the technical field of high voltage and insulation. The present invention discloses a maleic anhydride modified voltage stabilizer represented by Formula 1 and a preparation method thereof. (1) Maleic anhydride and 2,4-dihydroxybenzophenone are dissolved in tetrahydrofuran to obtain a mixture. (2) In a protective gas atmosphere, the mixture obtained in step (1) is added with a catalyst and stirred, centrifuged with added water, and an obtained precipitate is dried, thereby achieving the maleic anhydride modified voltage stabilizer. The present invention also provides the use of the maleic anhydride modified voltage stabilizer in a cross-linked polyethylene high voltage AC cable insulating material.

Abstract: Provided is a display panel. In the display panel, a plurality of first drive units included in a first drive circuit can output gate driving signals based on a turn-on signal provided by a first turn-on line coupled with the first drive units. A plurality of second drive units included in a second drive circuit can output gate driving signals based on a turn-on signal provided by a second turn-on line coupled with the second drive units. First gating units can control on-off between the corresponding first drive units and one part of pixels based on an enable signal provided by a first enable line coupled with the first gating units. Second gating units can control on-off between the corresponding second drive units and the other part of the pixels based on an enable signal provided by a second enable line coupled with the second gating units.

Abstract: The present invention discloses a flexible sensor detection system for medical care and health, including: an information collection module, which uses a wearable device as a carrier, where flexible sensors are respectively arranged on the wearable device; an information transmission module, configured to wirelessly transmit collected information to an information processing and feedback module; and the information processing and feedback module, configured to perform grading treatment on received data information and feed back a health condition corresponding to the data information to the information transmission module, where the information transmission module compares feedback health condition data with a preset health threshold to determine whether to give an alarm. A heart rate ECG band, a breathing band, a shell temperature band, a blood flow rate band, a blood glucose band, a blood oxygen band, and a deep temperature band of the present invention are provided with the built-in flexible sensors.

Abstract: The present disclosure provides a method for adjusting display brightness, an apparatus for adjusting display brightness and a display apparatus, belongs to the field of display technology, and can solve the problem that the waste of bonding points is easily caused and the accuracy of adjustment on the display brightness is influenced due to different types of driving chips provided by different manufacturers. The method for adjusting display brightness includes: acquiring a plurality of first display brightness values input corresponding to a plurality of bonding points of a display panel; converting the plurality of first display brightness values into a plurality of second display brightness values according to a preset mapping relationship, and the plurality of second display brightness values are matched with a gamma adjustment curve; and adjusting the display brightness of the display panel by using the plurality of second display brightness values.

Abstract: Provided is a display panel. The display panel is provided with a display region, and the display panel includes: a plurality of pixel units disposed in arrays in the display region; the display region is divided into a first dynamic refresh region, a second dynamic refresh region, and at least one first transition refresh region between the first dynamic refresh region and the second dynamic refresh region; a refresh rate of pixel units in the first dynamic refresh region is different from a refresh rate of pixel units in the second dynamic refresh region; a refresh rate of pixel units in each of the first transition refresh regions is between the refresh rates of the pixel units in the first dynamic refresh region and the second dynamic refresh region.

Abstract: An online centrifugal system includes a conveying device, a balancing and weighing mechanism, a manipulator, and a centrifuge. The conveying device, the balancing and weighing mechanism and the centrifuge are sequentially arranged. The conveying device is used to convey a sample holder for holding blood collection tubes, the balancing and weighing mechanism is used to weigh an adapter, and the centrifuge is used to perform centrifugation to blood collection tubes. The manipulator is used to grab the blood collection tubes and the adapter respectively, to convey the blood collection tubes between the adapter and the conveying device, and convey the adapter between the centrifuge and the balancing and weighing mechanism. An inlet and outlet window is provided on the centrifuge for passage of the adapter. The balancing and weighing mechanism is used to balance the adapter, thereby meeting balancing needs of the adapter.

Abstract: A method for diagnosing rotor rub-impact in a rotating machinery based on vibration signal deconstruction and frequency modulation characteristic anti-noise enhancement, including: converting, based on two-stage integration transformation and high-pass filtering, vibratory acceleration signals from a rotating machinery device into vibratory displacement signals; performing targeted extraction on a rotating frequency component therein based on an improved variational mode decomposition method; calculating and estimating instantaneous fluctuation characteristics of a fundamental frequency of the extracted rotating frequency component using a quadrature-derivative-based normalized Hilbert transform to obtain an instantaneous frequency; inputting a calculated instantaneous frequency sequence into an optimum stochastic resonance system for anti-noise enhancement of intrawave frequency modulation characteristics; and processing FFT on an instantaneous frequency of intrawave frequency modulation characteristics afte

Abstract: A method for evaluating a degassing effect of a cross-linked polyethylene cable, includes: acquiring a cable sample to be detected; heating the cable sample to be detected; under a darkroom condition, acquiring at least one light spot image of said transparent cable sample under irradiation of a monochromatic laser light source; extracting light intensity data of the at least one light spot image in a preset light spot image range; normalizing the light intensity data, and obtaining the maximum value and an average value of normalized light intensity coefficients of said transparent cable sample in a preset thickness range of the insulating layer; calculating a degassing uniformity coefficient according to the maximum value and the average value; and obtaining an evaluation result of the degassing effect of the cross-linked polyethylene cable according to the maximum value, the average value, and the degassing uniformity coefficient.

Abstract: The present disclosure provides a transducer unit and a manufacturing method thereof, and a transducer, the transducer unit includes: a base substrate; a first electrode on the base substrate; a support pattern on a side of the first electrode away from the base substrate, which is enclosed into an first groove, at least one second groove and at least one third groove, an orthographic projection of the second groove on the base substrate is spaced apart from that of the first groove on the base substrate, the third groove is between the first groove and the second groove to communicate them; a diaphragm pattern on the side of the first electrode away from the base substrate and capable of vibrating in the first groove; a filling pattern in the second groove; a second electrode on a side of the diaphragm pattern away from the base substrate.

Abstract: A method for predicting reliability of a cross-linked polyethylene cable insulation material, including: subjecting cross-linkable materials respectively to cross-linking reactions, to obtain groups of cross-linked polyethylene and enthalpy values of exothermic peaks of cross-linking reactions of the groups of cross-linkable materials; subjecting the groups of cross-linked polyethylene to a thermal extension test to obtain elongations under load of the groups of cross-linked polyethylene; establishing a curve for predicting reliability of the cross-linked polyethylene cable insulation material based on enthalpy values of the exothermic peaks of cross-linking reactions of the groups of cross-linkable materials and the elongations under load of the groups of cross-linked polyethylene; subjecting a cross-linkable material to be predicted to a cross-linking reaction, thereby obtaining an enthalpy value of an exothermic peak of the cross-linking reaction of the cross-linkable material to be predicted; and comparin

Abstract: The present disclosure relates to a method and apparatus for association detection for a human face and a human hand, an electronic apparatus and a storage medium. The method comprises: acquiring a first image, the first image being an image of a human object; performing feature extraction on the first image to obtain a first feature map of multiple dimensions; performing a feature fusion processing on the first feature map of multiple dimensions to obtain a second feature map of multiple dimensions, the dimensions of the second feature map corresponding to the dimensions of the first feature map in a one-to-one manner; detecting, on the basis of the obtained second feature map of multiple dimensions, a human face position and a human hand position associated with the same human object in the first image. The embodiment of the present disclosure enables easy and convenient association detection for human face and human hand.

Abstract: This application provides a wearable device and a method for evaluating a respiratory tract infection. The wearable device may include at least one first sensor, configured to obtain an audio signal of a user; at least one second sensor, configured to obtain a physiological parameter signal of the user, wherein the at least one second sensor comprises a photoplethysmography (PPG) sensor, the PPG sensor is configured to obtain a PPG signal of the user; and at least one processor, configured to: obtain a first respiratory rate of the user based on the PPG signal, and obtain a respiratory tract infection evaluation report of the user based on the audio signal and the first respiratory rate.

Abstract: A display panel assembly includes a display panel and driving devices. The display panel includes first multiplexers; each first multiplexer is configured to control the first load connection terminal (N11) to be electrically coupled to one of two first data lines (S1), and to control the second load connection terminal (N12) to be electrically coupled to the second or third data line (S2 or S3); each driving device includes data signal generators, and second multiplexers; each second multiplexer is configured to control the first signal generating terminal (N21) to be electrically coupled to one of the two first data signal generators, and control the second signal generating terminal (N22) to be electrically coupled to the second or third data signal generator; and the first and second load connection terminals (N11, N12) are electrically coupled to the first and second signal generating terminals (N21, N22), respectively.

Abstract: The present disclosure provides an acoustic transducer unit and a manufacturing method thereof, and an acoustic transducer, the acoustic transducer unit includes: a base substrate; a first electrode on the base substrate; a support pattern on a side of the first electrode away from the base substrate, which is enclosed into an accommodation groove, at least one release groove and at least one connection groove, an orthographic projection of the release groove on the base substrate is spaced apart from that of the accommodation groove on the base substrate, the connection groove is between the accommodation groove and the release groove to communicate them; a diaphragm pattern on the side of the first electrode away from the base substrate and capable of vibrating in the accommodation groove; a filling pattern in the release groove; a second electrode on a side of the diaphragm pattern away from the base substrate.

Abstract: The present application relates to a composite resin-based semi-conductive shielding material, prepared from raw materials including following components: 55 to 65 parts by mass of a composite resin, 20 to 30 parts by mass of electrically conductive fillers, and 0.9 to 2 parts by mass of a cross-linking agent, wherein the composite resin is a composite of a low-density polyethylene resin and an ethylene-acrylic acid resin, and the ethylene-acrylic acid resin is at least one of an ethylene-ethyl acrylate resin or an ethylene-butyl acrylate resin.

Abstract: A method for driving a display apparatus includes: in a first refresh period which corresponds to a first refresh rate and includes a first effective phase and first ineffective phase(s), outputting a first image frame signal to a display panel of the display apparatus in the first effective phase, and outputting a first ineffective data signal to the display panel in a first ineffective phase; and in a second refresh period which corresponds to a second refresh rate and includes a second effective phase and second ineffective phase(s), outputting a second image frame signal to the display panel in the second effective phase, and outputting a second ineffective data signal to the display panel in a second ineffective phase. The first refresh rate is different from the second refresh rate, and the first ineffective data signal and the second ineffective data signal have different magnitudes in voltage.

Abstract: The present invention provides a method for preparing a high molecular polymer powder material comprising the following steps: adding 20 parts of a high molecular powder material and 0.1 to 10 parts of carbon black into a mixing tank, and performing high-speed stirring for the first time to obtain a high molecular carbon black mixed powder material; adding the high molecular carbon black mixed powder material, 0.1 to 1 part of a flow aid, and 80 parts of a polymer powder material into the powder mixing tank; and performing high-speed stirring for a second time followed by sieving to obtain the high molecular polymer powder material.

Abstract: A display panel assembly includes a display panel and driving devices. The display panel includes first multiplexers; each first multiplexer is configured to control the first load connection terminal (N11) to be electrically coupled to one of two first data lines (S1), and to control the second load connection terminal (N12) to be electrically coupled to the second or third data line (S2 or S3); each driving device includes data signal generators, and second multiplexers; each second multiplexer is configured to control the first signal generating terminal (N21) to be electrically coupled to one of the two first data signal generators, and control the second signal generating terminal (N22) to be electrically coupled to the second or third data signal generator; and the first and second load connection terminals (N11, N12) are electrically coupled to the first and second signal generating terminals (N21, N22), respectively.

Abstract: The present invention provides a polypropylene cable protective layer and a preparation method thereof. The polypropylene cable protective layer sequentially includes a dielectric layer, a buffer layer and an insulating layer from the inside to the outside, and the thickness of the dielectric layer accounts for 5%˜12% of the thickness of the polypropylene cable protective layer; the thickness of the buffer layer accounts for 17%˜25% of the thickness of the polypropylene cable protective layer; the dielectric layer, the buffer layer and the insulating layer are respectively obtained by the wrapping of a polypropylene film A, a polypropylene film B and a polypropylene film C. The polypropylene cable protective layer of the present invention forms a dielectric gradient, and realizes the improvement of the insulation strength and voltage level of the power cable, and the increase of the transmission capability.

Abstract: A method of driving a scan circuit includes providing N number of first clock signals time-sequentially to (k*N) number of stages of the scan circuit, respectively. The (k*N) number of stages includes M number of groups. A respective group of the M number of groups includes one or more stages of the scan circuit. A respective first clock signal of the N number of first clock signals includes a first level component and a second level component. With respect to N number of data enabling signals, a difference between a starting point of a first level component of an n-th first clock signal and a starting point of an n-th data enabling signal of the N number of data enabling signals is equal to tm1. Values of tm1 for first clock signals provided to different groups of the M number of groups are different.