30results about How to "Constant quantity" patented technology

In an apparatus for driving a luminescent display panel, in a state in which scanning lines are sequentially scanned to drive and illuminate light-emitting elements, a voltage peak value arising in a scanning line in a non-scanning state is held by a capacitor through parasitic capacitance of the light-emitting element in a non-scanning state. On the basis of the voltage value held by the capacitor, a reverse bias voltage to be output from a reverse bias voltage generation circuit is controlled, and the voltage is supplied to the scanning lines.

The present invention provides a manufacturing method of a rigid polyurethane foam for a heat insulation material that satisfies performance required for practical use, such as a low thermal conductivity over a long period, and excellent adhesiveness and excellent dimensional stability under a low temperature environment. The manufacturing method of a rigid polyurethane foam for a heat insulation material, which is formed from blowing and molding using a mixture that includes polyisocyanate, a polyol, and a blowing agent, wherein a polyol prepared by addition-polymerizing ethylene oxide and propylene oxide to an aromatic monoamine compound or an aromatic diol compound.

A radiation imaging apparatus including: a plurality of conversion elements being arranged in one-dimensional or two-dimensional array on a substrate, and converting an incident radiation into an electric signal; and a light source for calibration emitting a light to the conversion elements. During a light output adjustment period for driving the light source, a driving level of the light source is adjusted based on a control signal produced by comparing an output signal from a conversion element with a predetermined initial output signal.

The invention relates to the field of liquid milk, concretely, the invention relates to a colloid fluid suspension used for adding probiotics in acidic milk beverage and a method for producing probiotics-containing acidic milk beverage. According to the invention, the colloid fluid suspension used for adding aseptic probiotics in acidic milk beverage comprises the following components by weight, 1-5 parts of sugar and 0.1-0.6 parts of suspending agent; wherein the suspending agent comprises gellan gum, xanthan gum and acid resistant CMC according to a ratio of 1: 2 :3; 0.3-0.5 part of lactic acid and balance of water, wherein the pH value is 4.3-4.5. The method of the invention for producing probiotics-containing acidic milk beverage comprises the following steps: suspending aseptic embedded probiotics particles on the colloid fluid suspension, then ensuring asepsis and adding. According to the invention, probiotics stably survived in aseptic acidic milk beverage at normal temperaturecan be realized by the colloid fluid suspension, and probiotics is not easy to breed and grow in product shelf period, wherein the probiotics quantity in product is more than 107 cf umL, simultaneously the quality of the product can not be influenced, so that the active probiotics existed in the milk beverage product at normal temperature can be realized.

The invention discloses a gesture action recognition method for Chinese Puyue sign language coding, which comprises the following steps of: 1, capturing a Chinese Puyue sign language coding gesture action video by using a camera to obtain a framed RGB image sequence; 2, performing color space conversion on each frame of image and determining a gesture area; 3, determining a fitting circle according to the extracted minimum value of the hand-shaped edge contour point sequence, replacing a palm center area, and then detecting a fingertip and a finger root; 4, extracting the angle and distance characteristics of each contour point by taking the circle center and the vertically downward unit vector as standards; 5, performing mapping transformation on the features by adopting a dynamic time warping algorithm to obtain similar distance features of a certain gesture; and 6, identifying the sign language actions by adopting a plurality of classifiers. The method can effectively identify the Chinese Puyue sign language coding gesture actions, provides a solution for a continuous and large-scale vocabulary Chinese sign language identification system, and is of great significance for popularizing normative Chinese sign languages.

The invention provides a biomarker for saliva test of 2019-nCoV and an application of the biomarker, and provides an application of a coronavirus S protein gene as the biomarker in preparation of a 2019-nCoV saliva test product or a 2019-nCoV coronavirus pneumonia auxiliary saliva diagnostic product. The inventors find for the first time the role of the 2019-nCoV gene as the biomarker in the preparation of the 2019-nCoV saliva test product. The product can quickly detect the 2019-nCoV infection, samples are easy to obtain, the detection efficiency is high, the speed is fast, the risk of infection of operators is reduced, and the product has very high sensitivity and specificity.

When trying to keep the amount of a liquid treating chemical in a treating bath constant by discharging almost the same amount of the liquid treating chemical as the liquid treating chemical supplied, the flow of the liquid treating chemical in the treating bath fell into disorder, which made it hard to keep the flow of the liquid treating chemical in the treating bath in the laminar state.A down-flow type chemical treating apparatus 1 in which a liquid treating chemical 21 is supplied from the outside of a treating bath 2 (main bath 3) while the liquid treating chemical 21 is discharged from the bottom portion of the treating bath 2 (main bath 3), comprising a pump 5 on the chemical discharging side of the main bath 3 which consists of a rotary pump allowing to discharge the liquid treating chemical 21 to the outside of the main bath 3 keeping the flow of the liquid treating chemical 21 substantially in the main bath 3 almost in the laminar state.

The invention discloses a vaporizing tower for producing gas-mixed carbon black, and belongs to the technical field of production of gas-mixed carbon black. According to the invention, traditional core equipment for producing gas-mixed carbon black is changed, and a vaporization kettle is replaced by the vaporization tower; therefore, the problems that asphalt at the bottom of the kettle is coked at high temperature due to direct heating of combustible gas at the bottom of the vaporization kettle, long-term continuous and stable operation cannot be realized under a constant working condition, and the product quality and yield are unstable are solved. The vaporizing tower exchanges heat through convection and conduction, tower bottom oil is heated by circulating waste heat of a production line, the vaporizing temperature of raw oil (anthracene oil) in the tower is stable, and vaporizing is more sufficient. Therefore, the gasified substance is narrow in component distribution, the produced carbon black is narrow in particle size distribution, and the carbon black is high in coloring strength, high in blackness, good in dispersity, good in hue, better in fluidity and lower in consumption. The asphalt is continuously discharged from tower bottom oil, so that the asphalt in anthracene oil at the tower bottom is prevented from being concentrated and coking, and the long-term continuous and stable operation of the vaporization tower under a constant working condition is ensured.

A kneading extruder includes a barrel having an extrusion port through which kneaded material including first and second liquid raw material is extruded, and a screw shaft placed in the barrel, the screw shaft kneading the first and second raw material to produce the kneaded material in melted state. A screw driving device continuously rotates the screw shaft at a constant speed, and a die communicates with the extrusion port of the barrel, the die having an extrusion port through which the kneaded material in a pressurized state is extruded. An ejection device ejects a portion of the kneaded material between the extrusion port of the barrel and the extrusion port of the die, the ejection device including an ejection quantity regulating unit for regulating the ejection quantity of the kneaded material so that the pressure of the kneaded material at the extrusion port of the barrel is kept constant.

The invention belongs to the technical field of flame-retardant cables, and particularly relates to a flame-retardant cable and a cable flame-retardant layer forming process. The outer side of the conductive core is wrapped with an insulating layer, the outer side of the insulating layer is wrapped with a heat insulation layer, the outer side of the heat insulation layer is wrapped with a shielding layer, the outer side of the shielding layer is wrapped with a flame-retardant layer, the flame-retardant layer is filled with an air bubble film, the air bubble film is made of a low-smoke flame-retardant material, and the air bubble film is filled with inert gas. The flexibility of a flame-retardant material is lower than that of a common cable wrapping material, a larger bending radius is needed, more space is occupied, installation and use are inconvenient, the use length of the cable is increased, and the use cost is increased; according to the invention, the air bubble film is arranged, so that the flexibility of the cable is better, the bending radius during use is smaller, the occupied space is reduced, the use is convenient, and the use of cable materials is saved under the condition that the good flame retardant property of the cable is ensured.