92results about How to "Improve smearing" patented technology

The invention discloses a backlight control method and apparatus, and a liquid crystal display apparatus. The main content of the method comprises the following steps: from the time when it is monitored that a first row of pixels in an N-th row image subarea of a current image frame starts driving scanning, switching off a backlight lamp of a backlight subarea for a time length of t, wherein t is scanning black frame insertion time; after the backlight lamp of the backlight subarea is switched off for the time length of t, switching on the backlight lamp of the backlight subarea for a preset time length, and enabling backlight brightness of the current backlight subarea to satisfy needed brightness; and after the backlight lamp of the backlight subarea is switched on for the preset time length, setting the backlight lamp of the backlight subarea to be closed. In such a way, a tailing phenomenon generated due to a visual persistence effect is effectively improved, at the same time, it is ensured that the backlight brightness of each backlight subarea is the same, the brightness uniformity of the backlight subarea is improved, and the display quality of a liquid crystal display apparatus is effectively improved.

The invention relates to a drive device and a drive method for a liquid crystal display. The drive device comprises a liquid crystal display, a grid drive, a data drive and a time sequence controller, wherein the time sequence controller is connected with the grid drive, the data drive and a backlight source, and is used for generating a gray scale level data signal and an internal logic synchronous signal according to an input signal, and generating a grid scanning control signal, a data input control signal and a backlight source control signal according to the internal logic synchronous signal and the time sequence of a data transmission channel to make the backlight source closed between the end moment of a last row of grid scanning control signal of the frame and the start moment of a first row of grid scanning control signal of next frame. The invention controls the on-off of the backlight source between two frames, makes the liquid crystal display screen generate periodic black frame, effectively improves the trailing phenomenon of moving images caused by persistence of vision, improves the frame quality, and simultaneously reduces the power consumption of the backlight source as the backlight source is closed between the two frames.

The invention discloses a method for measuring blood concentration of paraquat. The method comprises the following steps of: (1) pretreating a sample, namely adding aqueous solution of an internal standard substance and a protein precipitation agent acetonitrile into a plasma sample, performing whirl mixing, centrifuging and sampling supernatant; (2) separating the sample, namely adopting a universal C18 liquid chromatographic column, and using an ion pairing agent in an acid mobile phase, wherein the acid mobile phase is mixed solution of 3mmol.L<-1> aqueous solution of sodium dodecyl sulfate, 0.2 percent of aqueous solution of trifluoroacetic acid, acetonitrile and water; and (3) detecting by using a diode array detector, namely detecting by using the diode array detector at a detectionwavelength of 250 to 260nm, measuring peak areas of the internal standard substance and the paraquat, and calculating the blood concentration of the paraquat through least square method linear regression. The plasma sample is easy and convenient to pretreat, the detection process is sensitive and rapid, toxic substances and the blood concentration thereof can be rapidly determined in actual application, and the method is high in clinical application value.

The invention provides a chiral chromatographic separation and analysis method of dihydromyricetin enantiomer. The method comprises the following steps: dissolving a dihydromyricetin sample into the mobile phase, taking polysaccharide derivatives as the chiral stationary phase, and carrying out liquid chromatogram (LC) separation and analysis; wherein the mobile phase is a mixed solution of n-hexane and lower alcohols, and the polysaccharide derivative chiral stationary phase is one of stationary phases, which are individually covered by tri(3,5-dimethylphenylcarbamyl) straight-chain starch, tri((S)-(alpha)- phenylethylcarbamyl) straight-chain starch, tri(3,5- dimethylphenylcarbamyl)cellulose and tri(4- methylphenylcarbamyl)cellulose. According to the provided chiral separation and analysis method, the maximal separation degree of dihydromyricetin enantiomer is 1.95, and the maximal selection factor is 1.36.

The invention discloses a non-control-lightening-free shadow elimination circuit for an LED (Light Emitting Diode) display screen, which is arranged in a row driving circuit of the LED display screen arranged on a 1/4 scanning rank branch console. The non-control-lightening-free shadow elimination circuit is characterized in that a triode switching circuit is arranged among a row control line output end of a corresponding decoding chip, a row line output end of a field-effect tube and a public ground; when a level of the row control line output end is changed into a high level from an output low level, the row line output end is used for rapidly pulling a row power supply down; an isolation capacitor is charged and the connection with the public ground is switched off; device parameters are selected so that overlapping time of about 30ns exists between the front row and the next row in one frame of an image and the overlapping time is similar to the descending time of the row power supply. The circuit is simple and low in cost; the non-control lightening of LEDs on the other rows of the same line under the driving of the row power supply can be eliminated effectively; even if the non-control lightening of LEDs, caused by the electric leakage of the LEDs, happens, the trailing phenomenon of the LED display screen can be improved obviously so that human eyes cannot identify the effect that the front rows of the LEDs are slightly bright.

The invention discloses a flue gas desulfurizing system. The flue gas desulfurizing system comprises a chilling section and an absorbing section which are mutually communicated by a connecting pipe, wherein the chilling section comprises a spraying area and a liquid storage tank which are mutually communicated; the spraying area is provided with a spraying layer, the liquid storage tank is positioned under the spraying area, and the spraying layer and the bottom part of the liquid storage tank are connected by a pipeline and a chilling circulation pump to form a chilling loop; a pipeline for connecting the chilling circulation pump and the liquid storage tank is provided with an alkaline liquid inlet, and the alkaline liquid inlet is connected with an alkaline liquid storage tank through aswitch valve. The invention also provides a method using flue gas desulfurizing system to desulfurize flue gas. The flue gas desulfurizing system has the advantages that the high-temperature tail gaswith higher concentration of SO2 (silicon dioxide) can be treated, the investment is low, the energy consumption is low, and the clean and environment-friendly effects are realized. A method has theadvantages that the operation is simple, the absorbing ability is strong, and the scaling and blockage of equipment can be avoided; the higher desulfurizing rate can be obtained with fewer circulationliquid, the exhausted flue gas is clean, any inorganic particulate matter is basically not contained, the trailing white smoke is avoided, and the haze weather is not formed.

An ignition medicine with chlorate oxygen column and its production are disclosed. The ignition medicine consists of sodium chlorate 30~50% with grain size 60~300 meshes, lithium hyperchlorate or sodium perchlorate 10~30% with grain size 60~300 meshes, barium dioxide 0.1~6% with grain size 80~200 meshes, metal oxide ironic oxide or cuprous oxide 5~9% with grain size 20~200 meshes, metal powders 15~25% with grain size 100~300 meshes and cobalt salt 5~15% with grain size 40~200 meshes. It has shorter gas-take time and higher starting success probability of engine.

The invention relates to a neck skin care product and a preparation technique thereof. The proportioning for the components of neck skin care product is scientific and reasonable; the neck skin care product comprises active ingredients of Limnanthes Alba seed oil (meadowfoam seed oil), palmitoyl pentapeptide, soliquoid of organosilicone elastomers, etc., and the preparation of the neck skin care product aims at caring the neck skin of pregnant women and lying-in women that is characterized by hydropenia and easy aging caused by escalatory secretion of thyrotropin and corticotrophin; the neck skin care product has prominent anti-oxidation and free radical capturing properties, and is not greasy with strong permeability, obviously reinforcing the synthesis of elastin and collagen protein of the skin, smoothening the wrinkles and promoting skin elasticity; meanwhile, the neck skin care product ensures the skin moist and silken texture and covers the fine wrinkles of the neck; through the synergistic effect on the skin from endothecium to surface, the neck skin care product is capable of promoting the elasticity of the skin, preventing the loss of moisture, supplying moisture and nutrition inside the skin simultaneously, and ensuring the skin of the neck to be healthier and more lustrous.

The invention provides a display device and a driving method and a driving device thereof, relates to the technical field of display, and aims to solve the problem that the brightness of a high-gray-scale display picture in a first frame is lower than normal brightness when the display picture of the display device is switched from a low gray scale to a high gray scale. The driving method of the display device comprises the following steps of switching the display device from an mth gray-scale picture to an nth gray-scale picture, wherein m is more than or equal to 0 and less than or equal to 255; the step specifically comprises the following steps: under the condition of a target brightness display mode, obtaining a data difference value between a data voltage corresponding to an mth gray-scale picture and a data voltage corresponding to an nth gray-scale picture of a sub-pixel; judging whether the data difference value is larger than a preset difference value or not, and if the data difference value is larger than the preset difference value, when the display device is switched from the mth gray-scale picture to the nth gray-scale picture, controlling the sub-pixels to display a non-first-frame display picture in the nth gray-scale picture. The driving method provided by the invention is used for driving the display device to display.

The embodiment of the invention discloses a shift register, a gate drive circuit and a display panel. The shift register comprises a first input module, a second input module, a first output module, a second output module, a first output control module and a second output control module. The first input module controls the potential of the first node according to the first starting signal and the first clock signal; the second input module controls the potential of a second node according to a second starting signal and the first clock signal, wherein the potential of the second starting signal is opposite to that of the first starting signal; the first output module comprises a first coupling unit, and the first coupling unit couples the potential of the third node according to the potential of the first output end when the potential of the first output end jumps; and the second output module comprises a second coupling unit, and the second coupling unit couples the potential of the fourth node according to the potential of the second output end when the potential of the second output end jumps.

The invention discloses a method for analyzing daytime severe cold and flu capsules by high performance liquid chromatography. The daytime severe cold and flu capsules contain acetaminophen, phenylephrine hydrochloride, dextromethorphan hydrobromide and guaifenesin; high performance liquid chromatography analysis conditions are as follows: a chromatographic column adopts an octadecyl silane bonded silica gel column, a sodium octanesulfonate containing 0.1v% triethylamine is used as a mobile phase A, and acetonitrile is used as a mobile phase B. The method can efficiently and simultaneously detect four effective components in the daytime severe cold and flu capsules; furthermore, the method is easy to operate, high in analysis speed, high in repetitiveness and extremely high in specificity; the product quality of a daytime severe cold and flu capsule preparation can be relatively efficiently and comprehensively controlled.

The invention discloses a method for determining contents of rhynchophylline and isorhynchophylline in Xiao'er Qixingcha granules. The method comprises the following steps: (1) preparing a mixed reference: weighing an appropriate amount of rhynchophylline and isorhynchophylline, accurately weighing, and adding methanol to prepare the mixed control of the rhynchophylline and the isorhynchophylline;(2) preparing a test: accurately weigh the Xiao'er Qixingcha granules, adding hot water for dissolving, carrying out ultrasonic treatment, standing for cooling, adjusting the pH value with ammonia water, then shaking and extracting with ethyl acetate, recovering the ethyl acetate liquid, and adding the methanol for dissolving residues; (3) determining by using a high performance liquid chromatography: using octadecyl silane bonded silica gel as a chromatographic column of a filling agent; mobile phase: acetonitrile (A): 0.02-0.07% diethylamine-(7-10) mM ammonium acetate (B) = (40-60) to (60-40) V/V; flow rate: 0.8-1.2mL/min; elution time: 35-60 minutes; column temperature: 25-35 DEG C; detection wavelength: 240-250nm. The content determination method is simple to operate, and can accurately reflect the real content of a product, thus being suitable for industrial daily production inspection.

The invention relates to a determination method for effective components of Cortex Periplocae. The method is characterized by comprising the following steps: (1) preparation of a control solution: weighing control substances consisting of chlorogenic acid, 4-methoxysalicylaldehyde and periplocin and adding methanol to prepare the mixed control solution; (2) preparation of a test solution: drying and crushing Cortex Periplocae, then sieving the crushed Cortex Periplocae, carrying out precise weighing, adding a methanol solution, then carrying out extraction for 20 to 50 min, carrying out standing for cooling, then carrying out centrifugation and taking supernatant so as to obtain the test solution; and (3) determination: sucking up the mixed control solution and the test solution, injecting the mixed control solution and the test solution into a liquid chromatograph so as to obtain chromatograms and calculating the contents of corresponding components in a test substance according to the chromatogram.

The invention provides a surface treatment method of a high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics. The method comprises the following steps: firstly, grinding and grading a rutile titanium dioxide pigment raw material under the action of a grinding aid to remove agglomerated particles in the titanium dioxide pigment raw material; preparing the treated titanium dioxide pigment into paste, transferring the paste into reaction equipment, starting stirring, adjusting the pH value to be weakly alkaline, and heating to 50-100 DEG C for reaction bonding; heating and drying to obtain a titanium dioxide pigment cake; and finally, crushing and removing impurities to obtain the high-hydrophobicity and high-dispersity titanium dioxide pigment product for cosmetics.According to the preparation process disclosed by the invention, the coating feeling of the titanium dioxide pigment can be effectively improved, the titanium dioxide pigment is endowed with excellenthydrophobicity and good compatibility and dispersity with oil ester components in a cosmetic formula, so that the use requirements of cosmetics are met, and the use effect of the cosmetics is guaranteed.

The invention belongs to the technical field of stereo projection and provides a stereo projection system with a single projector and dual liquid crystal light valves. Along the direction of light path, the stereo projection system sequentially comprises a projector, a linear polarizer, a first optical self-compensated bend (OCB) mode liquid crystal light valve, a second OCB mode liquid crystal light valve, a polarization state converter, a projector screen, circular polarized glasses and a synchronous circuit. Stereo projection at higher frame rates is achieved by means of the stereo projection system with the single projector and the dual OCB mode liquid crystal light valves, the dynamic compensation driving technology and the dual OCB mode liquid crystal light valves capable of adjusting the polarization state of light at a high speed. Besides, the structure is simple, the cost is low, and by using one projector to match with the dual liquid crystal light valves and a mating driving circuit, audiences can watch stereo projection through wearing pairs of circular polarized glasses.

The invention relates to a bi-component catalytic system for high-activity preparation of polyether polyol or polyether ester polyol and application of the bi-component catalytic system. The catalyticsystem comprises a double-metal cyanide catalyst and a promoter, wherein a mass ratio of the activity promoter to the double-metal cyanide catalyst is (0.01-100): 1; and the promoter is one or more selected from quaternary ammonium salt, quaternary phosphonium salt, metal salt and Lewis base. By using the catalytic system, an epoxy compound can be efficiently catalyzed to be undergo ring-openinghomopolymerization or copolymerization with one or two selected from carbon dioxide and anhydride to prepare polyether ester polyol, and activity can reach 11 kg polymer/g DMC or above after a reaction is carried out for 6 h.

The invention provides a method for determining the content of clindamycin phosphate vaginal tablets. The method adopts high performance liquid chromatography for detection, selects mobile phase components, adopts scientific proportioning, adopts gradient elution and sets elution conditions, and can rapidly and accurately detect the content of clindamycin hydrochloride for injection so as to achieve the purpose of simply, conveniently, rapidly and accurately controlling the product quality.

The invention discloses an ion gate control method for an ion mobility spectrometer. The method comprises the step of controlling a complete working period of an ion gate to be subjected to a door opening stage, a shearing stage, a repulsion stage and a door closing stage through the voltage of a first grid electrode and the voltage of a second grid electrode. In the shearing stage, the rear edgeof an ion group is rapidly cut off, and axial stretching of the ion group in the shearing process is reduced; in the repulsion stage, the ion group is integrally pushed in a migration direction, and the axial compression of the ion group is realized by using the non-uniformity of a repulsion electric field. According to the method, on one hand, the ion group cutting and separating processes can beindependently controlled respectively, on the other hand, trailing of the rear edge caused by ion group cutting by the ion gate can be reduced, and the resolution capability of the ion mobility spectrometer can be improved.