Abstract: A metal pollution-resistant catalyst, its preparation and application are provided. The catalyst consists of a first alumina comprising a modified metal Mn and a second alumina. The ratio of the integral areas of the two peaks at 3670 cm?1 and 3730 cm?1 in the infrared spectroscopy of the catalyst is 1-5:1. The method for preparing the catalyst comprises a step of forming a slurry of an acid-soluble first alumina, a non-acid-soluble second alumina, water and optionally acid and a modified metal oxide. The metal pollution-resistant catalyst and the particle containing a catalytic cracking active component form a catalytic cracking catalyst, useful for catalytic cracking of hydrocarbon oil containing pollution metals. In the case of nickel pollution, catalytic cracking of hydrocarbon oil can reduce the ratio of hydrogen to methane.

Abstract: Disclosed are a gradient resin, a preparation method therefor and the use thereof. The gradient resin of the present application is formed by fusing different layers with color transition changes, wherein the color transition change between the two adjacent layers is in the range of 0.1% to 20%. The gradient resin is composed of, by mass percentage, 98%-99.99% of a resin powder and 0.01%-2% of a pigment.

Abstract: Disclosed are a drug delivery carrier complex targeting a central nervous system and a preparation method and an application thereof, relating to the technical field of biomedicine. The preparation method includes following steps: carrying out azide modification on carrier cells to obtain azide-modified carrier cells; modifying sulfhydryl group and cholesterol to two ends of therapeutic miRNA respectively, and then performing ligation reaction to modified therapeutic miRNA and an acryl complex to form a miRNA complex; and co-incubating the azide-modified carrier cells with the miRNA complex, and forming the drug delivery carrier complex through click chemistry reaction.

Abstract: A method for preparing a clay mineral biomaterial includes: mixing montmorillonite and a potassium permanganate solution to obtain a reaction solution; subjecting the reaction solution to a hydrothermal reaction; and washing and drying a product obtained after the hydrothermal reaction to obtain the clay mineral biomaterial. In the method, montmorillonite is used as a carrier, and nano-scale manganese dioxide particles are allowed to grow in situ on the montmorillonite carrier through a hydrothermal reaction. The nano-scale manganese dioxide particles are well dispersed and fixed on a surface of the montmorillonite carrier, which can prevent the nanoparticles from aggregating.

Abstract: A pixel driving circuit (100) includes a photosensitive device (110) and a dimming sub-circuit (120) connected between a first voltage terminal (VDD) and a light-emitting device (200). A first terminal of the photosensitive device (110) is configured to receive a control signal, a second terminal of the photosensitive device (110) is electrically connected to a first node (N1), and the photosensitive device (110) is configured to adjust a voltage at the first node (N1) based on the control signal. The dimming sub-circuit (120) is electrically connected to the first node (N1). The on-state of the dimming sub-circuit (120) changes with a change of the voltage at the first node (N1), and the dimming sub-circuit (120) is configured to adjust brightness of the light-emitting device (200) based on a first voltage signal from the first voltage terminal (VDD) under control of the voltage at the first node (N1).

Abstract: The present disclosure relates to the field of lithium battery separators, and aims to provide a battery separator and a coating process thereof, a coating system and a battery. The coating process includes: initial heat setting of a polyolefin membrane, online coating of the polyolefin membrane, and heat setting of a coating membrane. The coating system includes a plurality of drying ovens disposed in a travel route of heat setting of a polyolefin membrane, and a coating apparatus for coating a coating slurry on the polyolefin membrane, which is disposed at a spacing position of adjacent drying ovens. When the online coating flow is disposed before the end of the heat setting of the polyolefin membrane, the polyolefin base membrane and the coating slurry are dried by using the temperature of the heat setting drying oven of the polyolefin membrane.

Abstract: Disclosed is a winding method using an air expansion structure, which accurately controls the winding process by preset inflation parameter values and preset winding parameter values, so as to create space for a membrane to contract after winding, that is, to relieve the stress of the membrane, so as to avoid the situation of deviation or innermost side wrinkling during winding of the membrane, and the rewinding procedure is not needed, so that the complexity of the working procedure is reduced.

Abstract: Provided are a digital battery separator and a preparation method therefor. The digital battery separator comprises a base membrane (1) and a polymer coating (2) coating at least one surface of the base membrane (1), wherein the thickness of the separator is 3-10 ?m, and the ionic conductivity of the separator is 0.704-4.70 mS·cm?1. A thinner and safer battery separator with a smaller resistance, better porosity and air permeability, and better heat resistance is obtained, The problems such as being unsafe, having a large resistance, having low porosity, poor air permeability and poor heat resistance that are present in an existing ultrathin separator are solved.

Abstract: The present invention relates to a core-shell Fe2P@C—Fe3C electrocatalyst and a preparation method and application thereof. The core-shell Fe2P@C—Fe3C electrocatalyst comprises a carbon nanotube as a matrix which is formed by a carbon layer with FeC3 nano-dots distributed therein, and Fe2P@C embedded in the carbon nanotube. The Fe2P@C has a core-shell structure and is formed by coating Fe2P with carbon.

Abstract: Disclosed are a gradient resin, a preparation method therefor and the use thereof. The gradient resin of the present application is formed by fusing different layers with color transition changes, wherein the color transition change between the two adjacent layers is in the range of 0.1% to 5 20%. The gradient resin is composed of, by mass percentage, 98%-99.99% of a resin powder and 0.01%-2% of a pigment.

Abstract: The invention relates to an ultra-thin carbon-layer composite material modified by nickel nanoclusters and vanadium carbide particles, and its preparation method and application. The composite material comprises a two-dimensional ultra-thin carbon-layer as a matrix, in which nickel clusters and vanadium carbide nanoparticles are embedded to form coupling interfaces between Ni and C, VC and C, and Ni and VC. The thickness of the two-dimensional ultra-thin carbon-layer is less than 10 nm.

Abstract: The invention relates to a V-Ni2P/g-C3N4 photocatalyst, a preparation method, and application thereof. The V-Ni2P/g-C3N4 photocatalyst is a composite material of V-Ni2P and g-C3N4, wherein V-Ni2P has the spherical structure formed by nanosheets; the mass ratio of the V-Ni2P and g-C3N4 is (0.01 to 0.2):1.

Abstract: Disclosed are a dental gradient color-resin ceramic restoration material and a preparation method thereof. The method includes: preparing at least two paste materials with different colors, respectively dispersing the paste materials with different colors at a certain speed and under a vacuum of -0.01-0.1 MPa to obtain at least two granular materials with different colors having an average size of 0.1 mm to 5 mm; spreading the at least two granular materials with different colors to be flat in a mould in sequence to obtain at least two layers, and then tightly combining the at least two layers at a pressure of 0.5-5 MPa to obtain a semi-finished product of a gradient color-resin ceramic restoration material; polymerizing and curing the semi-finished product at 60-200° C. and 2-50 MPa to obtain a multilayer gradient color-resin ceramic restoration material.

Abstract: The present invention relates to a separator film in a lithium battery, more specifically relates to a polyolefin microporous film and a preparation method thereof. The polyolefin microporous film has a porosity above 30% and below 65%, a median pore size above 10 nm and below 60 nm, a stress-strain (?-?) curve integral in Machine Direction (MD) and Transverse Direction (TD) directions simultaneously fulfilling the following definition: E=?0??(?)d?>150 J/m2; and the largest pore size, the smallest pore size and the median pore size fulfilling the following definition: 0.9<P<1.2, wherein P=(the largest pore size?the smallest pore size)/the median pore size. The polyolefin microporous film according to the present invention has high tenacity, small pore sizes, concentrated distribution of pore sizes, great stability for coiling, and enabling high number of battery cycles. When used as a separator film, battery manufacturing safety and the service life of the battery being made can be increased.

Abstract: A method for adjusting the signal frequency includes: acquiring a first number of times of outputting a reference signal at an active level within a reference duration, wherein a correlation between a frequency of the reference signal and temperature is less than a reference correlation threshold, the reference duration is negatively correlated with a frequency of a clock signal, a correlation between a frequency of a clock signal and temperature is greater than the reference correlation threshold, and a drive signal for driving a display device to display an image is generated based on the clock signal; acquiring a target adjustment value based on the first number of times if the first number of times is different from a reference number of times; and controlling and adjusting the frequency of the output clock signal based on the target adjustment value.

Abstract: A data transmission method comprises: receiving and storing image data, wherein the image data comprises first data and second data, the first data is encrypted verification data, and the second data is original data; comparing the first data with the second data in stored image data; replacing the second data with the first data, if the second data and the first data are inconsistent.

Abstract: The invention relates to a V—Ni2P/g-C3N4 photocatalyst, a preparation method, and application thereof. The V—Ni2P/g-C3N4 photocatalyst is a composite material of V—Ni2P and g-C3N4, wherein V—Ni2P has the spherical structure formed by nanosheets; the mass ratio of the V—Ni2P and g-C3N4 is (0.01 to 0.2):1.

Abstract: This application discloses a scanning modification method for modifying an offset between a display panel and a cover plate and a display device. A scanning modification method of a display panel includes: determining a scanning reference point according to an offset angle, which offset angle refers to an alignment offset angle between the cover plate and the display panel; determining a scanning unit and the distribution of individual scanning units in a redefined scanning line according to the offset angle and the size of sub-pixel units, which scanning unit includes at least one sub-pixel unit; determining the starting point of each redefined scanning line according to the offset angle and the size of sub-pixel units; and performing scan display according to the scanning reference point, the distribution of the scanning units and the starting point of the redefined scanning line that are determined.

Abstract: The present application relates to a fingerprint identification module and a display device. The fingerprint identification module includes: a first lens assembly; a second lens assembly with a primary optical axis not parallel to a primary optical axis of the first lens assembly; a reflecting mirror assembly, including a reflecting mirror and a rotating shaft coupled to the reflecting mirror, wherein the rotating shaft can drive the reflecting mirror to rotate, and the reflecting mirror includes a reflecting surface; and a light-sensitive element located at a light exiting side of the second lens assembly.

Abstract: The present invention relates to a core-shell Fe2P@C—Fe3C electrocatalyst and a preparation method and application thereof. The core-shell Fe2P@C—Fe3C electrocatalyst comprises a carbon nanotube as a matrix which is formed by a carbon layer with FeC3 nano-dots distributed therein, and Fe2P@C embedded in the carbon nanotube. The Fe2P@C has a core-shell structure and is formed by coating Fe2P with carbon.