Abstract: The present disclosure relates to a method for producing vinyl acetate, comprising a vinyl acetate synthesis process, a vinyl acetate refining process and a separation process of vinyl acetate and ethyl acetate, including an acetic acid evaporator, an oxygen mixer, a vinyl acetate synthesis reactor, a first gas separating tower, a second gas separating tower, a recovered gas compressor, a water washing tower, an absorption tower and a desorption tower, a recycling gas compressor; the vinyl acetate refining process comprising an acetic acid tower, a crude VAC tower, and a fine VAC tower, a rectifying tower, an ethyl acetate tower, a water phase receiving tank, an extracting and rectifying tower and an ethyl acetate phase separator.

Abstract: In a grain sampling and imaging device, a grain bin (1) is located under a sampling body (5), a grain feed connector (4) is fixed to a top of the sampling body (5), an observation window (2) is installed on the sampling body (5), a camera (3) is installed above the observation window (2); grains fall to a grain feed connector (4), and then into the sampling body (5), and then are sieved by multiple passages of the sampling body (5), a part of the grains randomly enter the observation window (2) and photographed by the camera (3), and finally all of the grains enter the grain bin (1) through a discharge outlet (5.1) provided at a bottom of the sampling body (5).

Abstract: A method for controlling a display panel includes: controlling polarities of data signals transmitted to pixel circuits in partial columns in a target display region to be inverted when a (KN?1)th frame is displayed; and controlling polarities of data signals transmitted to pixel circuits in other columns than the partial columns in the target display region to be inverted when a KNth frame is displayed.

Abstract: A method for controlling a display panel includes: controlling polarities of data signals transmitted to pixel circuits in partial columns in a target display region to be inverted when a (KN?1)th frame is displayed; and controlling polarities of data signals transmitted to pixel circuits in other columns than the partial columns in the target display region to be inverted when a KNth frame is displayed.

Abstract: The present disclosure provides a display method of a curved display panel, and a curved display device. The display method of the curved display panel according to the present disclosure includes: obtaining a radius of curvature of the curved display panel and acquiring image data, wherein the image data includes a gray scale corresponding to each sub-pixel; and determining a data voltage output to each sub-pixel according to the radius of curvature and a gray scale corresponding to the sub-pixel.

Abstract: The present disclosure provides a gate on-state voltage supply unit, a gate on-state voltage supply method, a display driving module and a display device. The gate on-state voltage supply unit is used in the display device including a display driving module. The gate on-state voltage supply unit includes a shutdown determination module and a voltage supply module. The shutdown determination module is configured to determine whether the display device has been shut down, and when the display device has been shut down, transmit a boosting control signal to the voltage supply module. The voltage supply module is configured to, upon the receipt of the boosting control signal, boost a gate on-state voltage to acquire a boosted gate on-state voltage, and apply the boosted gate on-state voltage to a gate driving circuit of the display driving module.

Abstract: The disclosure discloses a drive circuit, a display panel, a display device, and a method for driving the display panel; wherein the drive circuit includes a plurality of shift register groups including at least one shift register, and a clock signal input sub-circuit; the clock signal input sub-circuit is configured to input clock signals to respective shift registers in the plurality of shift register groups through a plurality of clock signal lines for controlling outputs of the respective shift registers, wherein durations of valid levels of clock signals applied to a same shift register group are same, and durations of valid levels of clock signals applied to different shift register groups are different.

Abstract: The disclosure discloses a drive circuit, a display panel, a display device, and a method for driving the display panel; wherein the drive circuit includes a plurality of shift register groups including at least one shift register, and a clock signal input sub-circuit; the clock signal input sub-circuit is configured to input clock signals to respective shift registers in the plurality of shift register groups through a plurality of clock signal lines for controlling outputs of the respective shift registers, wherein durations of valid levels of clock signals applied to a same shift register group are same, and durations of valid levels of clock signals applied to different shift register groups are different.

Abstract: The present disclosure provides a display method of a curved display panel, and a curved display device. The display method of the curved display panel according to the present disclosure includes: obtaining a radius of curvature of the curved display panel and acquiring image data, wherein the image data includes a gray scale corresponding to each sub-pixel; and determining a data voltage output to each sub-pixel according to the radius of curvature and a gray scale corresponding to the sub-pixel.

Abstract: Provided is a method of establishing a machine learning model for predicting toxicity of siRNA to certain type of cells and application thereof. The method includes A) providing n siRNAs of 19-29 bp, wherein n?2; B) obtaining input and output values for establishing the model from each siRNA, the input values being obtained by i) aligning each siRNA with genomic mRNAs and selecting complementary off-target genes having no more than 7 mismatched bases; ii) obtaining off-target weights according to mismatched bases' characteristic and mRNA's secondary structure in complementary region; iii) obtaining omic weights of the off-target genes using databases; iv) calculating omic eigenvalues as the input values, based on omic and off-target weights of all the off-target genes; the output values being obtained by conducting experiments with the siRNAs to obtain cell survival indexes; and C) calculating the input and output values of the n siRNAs through machine learning algorithm.

Abstract: The present disclosure provides a gate on-state voltage supply unit, a gate on-state voltage supply method, a display driving module and a display device. The gate on-state voltage supply unit is used in the display device including a display driving module. The gate on-state voltage supply unit includes a shutdown determination module and a voltage supply module. The shutdown determination module is configured to determine whether the display device has been shut down, and when the display device has been shut down, transmit a boosting control signal to the voltage supply module. The voltage supply module is configured to, upon the receipt of the boosting control signal, boost a gate on-state voltage to acquire a boosted gate on-state voltage, and apply the boosted gate on-state voltage to a gate driving circuit of the display driving module.

Abstract: A method for preparation of graft modified ammonium polyphosphate with ultra-low hydroplaning and resistance to hydrolysis belongs to the field of the preparation of flame retardant. Ammonia water is used as hydrolytic agent of amino silane. In the early stage of synthesis of ammonium polyphosphate with phosphorus pentoxide, diammonium hydrogen phosphate and melamine as raw materials, hydrolyzed amino silane ammonia mixture is added, and continues warming reaction, when the temperature drops to a certain temperature, melamine is added to maintain high temperature reaction for a certain period of time, then cools to obtain graft modified ammonium polyphosphate with ultra-low hydroplaning and resistance to hydrolysis. The present disclosure grafts ammonium polyphosphate with two kinds of amino grafting in stages, and the modified ammonium polyphosphate products after grafted basically have no hydroplaning when meets water.

Abstract: A method for preparation of graft modified ammonium polyphosphate with ultra-low hydroplaning and resistance to hydrolysis belongs to the field of the preparation of flame retardant. Ammonia water is used as hydrolytic agent of amino silane. In the early stage of synthesis of ammonium polyphosphate with phosphorus pentoxide, diammonium hydrogen phosphate and melamine as raw materials, hydrolyzed amino silane ammonia mixture is added, and continues warming reaction, when the temperature drops to a certain temperature, melamine is added to maintain high temperature reaction for a certain period of time, then cools to obtain graft modified ammonium polyphosphate with ultra-low hydroplaning and resistance to hydrolysis. The present disclosure grafts ammonium polyphosphate with two kinds of amino grafting in stages, and the modified ammonium polyphosphate products after grafted basically have no hydroplaning when meets water.

Abstract: The instant invention discloses a polylactic acid stereocomplex composition containing pure stereocomplex crystals and a process for its manufacture. The composition according to this invention comprising (a) 30-70 wt % poly (L-lactic acid) (PLLA). (b) 70-30 wt % poly (D-lactic acid) (PDLA) and (c) 0.01-10 wt % nucleating agent, which can be obtained by solution and melt blending. Stereocomplex crystals are preferentially formed according to the invention, and the homocrystals (a crystal form) for the PLLA or PDLA homopolymer can't be observed. The melting temperature of the composition according to the invention is at least 200° C., which is about 30-50° C. higher than the PLLA or PDLA homopolymer.

Abstract: The instant invention discloses a polylactic acid stereocomplex composition containing pure stereocomplex crystals and a process for its manufacture. The composition according to this invention comprising (a) 30-70 wt % poly (L-lactic acid) (PLLA). (b) 70-30 wt % poly (D-lactic acid) (PDLA) and (c) 0.01-10 wt % nucleating agent, which can be obtained by solution and melt blending. Stereocomplex crystals are preferentially formed according to the invention, and the homocrystals (a crystal form) for the PLLA or PDLA homopolymer can't be observed. The melting temperature of the composition according to the invention is at least 200° C., which is about 30-50° C. higher than the PLLA or PDLA homopolymer.

Abstract: The present invention relates to a process for the synthesis of melamine cyanurate in lamellar crystalline shape with high purity and flowability. The procedures include that 1) melamine and cyanuric acid react to form mixture solution, 2) the mixture solution is filter-pressed to prepare filter cake, 3) filter cake and silicon oil are mixed to obtain semi-finished product, 4) dried the semi-finished product until the water content is less than 1.0%, 5) heat the temperature and control certain vacuum degree for curing and crystallizing, 6) the product is obtained. The processing steps of present invention are easy to operate, the processing parameters are easy to control, the production time of melamine cyanurate is short, the quantity of pure water is low, and utilization of equipments is high. Removing the incompletely reacted raw materials and impurities by filter-pressing, greatly increases the purity of semi-products.