127results about How to "Repetitive" patented technology

The invention discloses a preparation method of a semisolid slurry of a rare earth magnesium alloy. According to the guiding principle of promoting grain nucleation and inhibiting grain growth, pure aluminium is added into rare earth magnesium alloy melt, and a lot of fine dispersed Al2RE intermetallic compound particles which are generated by an in-situ reaction provide nuclei of heterogeneous nucleation for primary alpha-Mg so as to promote grain nucleation; and after the melt is transferred to a tundish, considering stability of a solid-liquid interface during the solidification process, the growth of a primary phase is delayed by reasonable control of cooling conditions in different stages of solidification so as to realize the effect of inhibiting grain growth. The invention provides a low-cost agitation-free green semisolid slurry preparation method. In comparison with a traditional semisolid slurry preparation technology, efficiency of the preparation method is improved greatly and cost is reduced remarkably. By the preparation method, a high-quality rheological slurry is provided for follow-up rheoforming of rare earth magnesium alloy, such as rheo-die casting, rheological squeeze casting and the like. The preparation method has a wide application prospect in rheoforming of a magnesium alloy.

The invention discloses an automatic detection method for a large transfusion production line, including the following steps: 1, making a transfusion bottle filled with liquid medicine rotate in a high-speed, then rapidly stopping the transfusion bottle, so that the liquid medicine in the bottle has a self-rotating movement under the inertia; 2, picking-up a plurality of images of the transfusion bottle in which the liquid medicine is in a self-rotating state; 3, respectively digitally processing and mutually comparing to the plurality of images, distinguishing the exogenous impurity in the liquid medicine, in order to judge whether the bottle of liquid medicine is qualified. The invention also discloses an automatic detection apparatus for a large transfusion production line, which is characterized by including a rotation device, a controller, a video camera and an image processing apparatus, wherein, the output end of the controller is connected with the control terminal of the rotation device, a gripping device for fixing up the transfusion bottle, a rotating work station and a detecting work station are provided on the rotation device, and the video camera outputs data to the image processing apparatus. The invention can automatically detect whether impurity exists in the liquid medicine, with high testing accuracy and fast testing velocity.

The high-rigidity synchronously spreading folded space extension arm consists of folded truss units capable of being expanded repeatedly and being spread, driving system, power supply system and supporting space platform. The folded truss units are basic units to constitute the extension arm and are connected mutually via standard triangular joints; the driving system is inside the triangular space in the bottom of the extension arm and is connected to the supporting space platform and to the power supply system through the transmission shaft. The truss structure in triangular prism form of the present invention has geometrical stability, high structural rigidity and high unit repeatability, and may be spread and folded synchronously in high precision. The present invention may be used in large communication satellite, electronic reconnaissance satellite and space station platform.

The invention discloses a laboratory spectrum calibration and correction method at the short wave infrared band (1000-2500nm) for a hyper spectral imager. The method includes the steps as follows: based on the scanning method of a monochromator, obtaining the relation between the passage deflection and time migration of correction wave bands through collecting the correction wave bands and adopting numerical calculation and linear regression analysis, building a spectral line drift correction model, and finally performing spectral line drift correction for the data of the entire short wave infrared band as per the characteristics of the spectral line drift correction model. Through the adoption of the laboratory spectrum calibration and correction method for the hyper spectral imager, the problem that the spectral line wave length drifts to long wave caused by interior heat production of the imager is solved, and within the allowable range of the calibration accuracy, the model is reliable, the time migration rule has repeatability, and the utility value is realized. The solution provided by the invention has already been practically applied to the laboratory spectrum calibration and correction method for the hyper spectral imager, and the model provided by the invention can be used for providing a reference frame for other remote sensors of the same type in case of similar conditions.

The invention discloses a simple fiberboard bending tester and a testing method. The tester comprises a support, a bench scale, a pressure mechanism and a sample loading carrier, wherein the sample loading carrier is placed on the bench scale, the sample loading carrier is provided with two support cross bars for supporting the two ends of a fiberboard, and the pressure mechanism is arranged above the sample loading carrier and is liftably arranged on the support. According to the invention, when the fiberboard is detected, the pressure mechanism goes down to apply pressure on the central portion of the fiberboard, the fiberboard generates a certain elastic deformation, the fiberboard restores the elasticity because of the interaction of power, the two support cross bars receive the pressure generated by the elasticity recovery of the fiberboard, the pressure is transmitted to the bench scale, and the bench scale displays the bending resistance data. The tester utilizes the pressure mechanism and the sample loading carrier to simulate the bending handle, and utilizes the display of the bench scale display screen to calibrate the result data, thus the bending resistance of the fiberboard can be simply detected, and the bending resistance of products can be calibrated accurately.

The invention discloses a nanometer Ag antimicrobial comprising nanometer Ag particle, a solubilizer, a water-soluble polymer, a plasticizer, a processing modifier, a solvent, a film-forming assistant, essence, pigment, distilled water or deionized water. The invention also disclosed a preparation method of the nanometer Ag antimicrobial. The preparation method comprises the steps of: adding the nanometer Ag particle into the distilled water or the deionized water, adding the solubilizer and the water-soluble polymer, and stirring to prepare a solution A; adding the plasticizer and the processing modifier (acrylate (ACR)) into the solvent, stirring, adding the film-forming assistant, and stirring to prepare a solution B; and adding the solution A into the solution B, adding the essence and the pigment, and stirring to obtain the nanometer Ag antimicrobial. The nanometer Ag antimicrobial disclosed by the invention has the advantages of strong adhesion on objects, good film forming property, good friction resistance and long-lasting antibacterial effect; and the preparation method has the advantages of simpleness and strong operability.

The invention discloses an indirect bonding method of a goal-directed localization orthodontic bracket. The indirect bonding method comprises the following steps: on the basis of a three-dimensional digital occlusion model, implementing a teeth arrangement test until reaching six Andrews normal occlusion standards; precisely localizing a virtual bracket on the three-dimensional digital model that dentition is completely aligned and kept flat, and simulating an orthodontic result by virtue of professional orthodontic software; assessing the orthodontic result, optimizing bracket localization in accordance with the orthodontic result, designing a bracket transfer tray, and processing the bracket transfer tray by virtue of a 3D printing technology and a vacuum pressed film technology; and arranging a real bracket on the bracket transfer tray, and bonding the bracket to a dental face by virtue of the bracket transfer tray. According to the method, an internationally recognized clinical curative effect assessment standard, which is directed by the result, is adopted for the first time, with a purpose of offering a new way for solving the problem on bracket precise localization by virtue of an orthodontic indirect bonding technology.

The invention provides an azobenzene polymer material which has a structure represented by formula I shown in the description. The azobenzene polymer can be isomerized under photoinduction, can be changed in glass-transition temperature, can produce a reversible solid-liquid transition at room temperature, and has and has repeatable self-repairing and surface repairing effects. Meanwhile, a trans-azobenzene polymer is solid, has strong adhesion and can bear loads. In contrast, a cis-azobenzene polymer is liquid and has weak adhesion, which means photoisomerization can cause load drop. Therefore, the azobenzene polymer provided by the invention can be used as a photoresponsive self-repairing material and a light-controlled reversible adhesive, and can solve problems a conventional thermoplastic polymer material in plastics, remodeling and damage repair of a coating, separation, recycling and adhesive surface repair of an adhesive and the like.

The invention provides an enzyme immobilization method, and particularly relates to a method for immobilization of enzyme for beer production. According to the method, alpha-acetolactate decarboxylase buffer solution is added to calcium chloride solution for reaction to obtain a nanoflower structure provided with preliminary immobilized enzyme, then obtained nanoflower is dispersed in sodium alga acid solution, obtained dispersion liquid is added to the calcium chloride solution dropwise at a certain speed, and stirring and curing are conducted to obtain a final microsphere product. According to microspheres prepared with the enzyme immobilization method, immobilized enzyme activity is higher than free enzyme activity by 98% or more, and immobilized enzyme is stable and recyclable and has broad prospects in industrial application.

The invention discloses a method for testing vascular endothelial inhibitor biological activity, the method utilizes vascular endothelial inhibitor standard and sample with the same concentration gradient after dilution in multiple proportions to inhibit HUVEC cell proliferation, and detects the proliferate inhibition activity of vascular endothelial inhibitor to HUVEC cells with trace enzyme reaction colorimetry, and then analyzes biological activity of angiogenesis inhibition of vascular endothelial inhibitor. The method uses the vascular endothelial inhibitor standard to correct testing errors of vascular endothelial inhibitor samples in different batches, which causes the cell proliferation inhibition activity testing results of vascular endothelial inhibitor have specificity and repeatability, and overcomes the defects that existed in prior vascular endothelial inhibitor activity testing method that the repeatability is bad, the method can not be unified, and the method can not meet the needs of large scale production and multiple-batch quality control.

The invention relates to a method for achieving 2H-to-1T phase transition of molybdenum disulfide. The method comprises the steps: dissolving molybdenum disulfide in an aqueous solution of ethanol, and carrying out ultrasonic dispersion stripping; adding a surfactant into the solution obtained through ultrasonic dispersion stripping, carrying out uniform dispersion, placing the dispersion solution into a supercritical carbon dioxide reactor, and carrying out a reaction for 4 to 6 hours under the conditions of 40 DEG C and 16Mpa; carrying out separation and purification on the reaction solution. According to the method provided by the invention, the phase change of MoS2 is achieved in a surfactant micellar system constructed on the basis of assistance of supercritical carbon dioxide, a novel method mechanism for achieving the phase transition of MoS2 is obtained, and the content of phase 1T reaches about 90%, so that the method is simple in process and simple in aftertreatment, is novel, environmentally friendly and safe and has repeatability; compared with high-pressure high-temperature reaction conditions of ion intercalation methods, the method further has the advantages of moderateness and safety.

The invention discloses an oscillator and a true random number generating circuit formed by the same in the field of design of an integrated circuit. The oscillator adopts a novel structure; a main loop can adopt a quadrilateral, octagonal or dodecagonal structure or other structures, i.e. a 4n-gonn structure, wherein n is an integer greater than zero. The true random number generating circuit comprises a high-speed oscillator, a low-speed oscillator, an xor circuit, a clock circuit, a system clock circuit and a sampling circuit. The oscillator provides a random source for the true random number generating circuit, forms the high-speed oscillator and the low-speed oscillator and is controlled by two external enable signals a and b; signals at the output ends of the high-speed oscillator and the low-speed oscillator are different or the high-speed oscillator and the low-speed oscillator output primary random number seeds; the clock circuit and the system clock circuit control the sampling circuit to carry out sampling on the primary random number seeds for twice so as to generate a true random number sequence; the true random number generating circuit solves the problems of poor randomness and periodic generation of the true random number sequence.

The invention belongs to the field of seat performance tests, and discloses an explosive shock waveform simulation system and method for an armored car seat bench test. The explosive shock waveform simulation system for an armored car seat bench test comprises a test bench, a rigid frame, an explosive shock waveform generation device and a lifting device. The lifting device is installed on a top crossbeam of the test bench. The rigid frame is connected with the lifting device. A test piece is arranged in the rigid frame. An explosive shock waveform generating device is installed on the groundof the test bed. The armored car seat bench test adopts a drop impact test scheme to carry out the landmine explosion impact resistance of the armored car seat, the lightning protection seat is installed in the rigid frame to simulate the installation mode of the seat in the armored car, and the rigid frame drops to generate an impact waveform to realize the simulation of explosion impact.

The inspection platform of the engine hydraulic of the jack wire comprises the jack wire bottom plate, the vertical plate connected with the jack wire bottom plate, instruction and control instrument, cylinder components on the vertical plate, pressing slip device on the said jack wire bottom plate, being able to solve the inaccuracy of inspection, with high precision, reliability, stability and repetitiveness. The inspection platform is practical and economical, stable in running, low in maintaining cost, efficient in working, reduced in labor, small in size, convenient in application.

The invention discloses a new drying process for kudzu root extract of Chinese medicine. Kudzu root extract (1) is preheated in a charging stock tank (3) and evenly coated on a conveyer belt (2) by a screw charging pump (4) through a stock distributing gear (5). Under the vacuum condition, the kudzu root extract (1) moves and passes through heating sections (6) (7) (8) in sequence as along with the conveyer belt (2), and goes through a cooling section (9) at last, forming a porous, loose and cake-like dry substance. By adopting the method, the kudzu root is dried step by step under the vacuum conditions; the whole drying process is mild and short in time. The obtained dry substance is a porous and loose medium, which has the advantages of light color, low water content and good solubility. Operating environment is totally enclosed to prevent people from the cross infection between people and material, which meets GMP requirement. Compared with the drying method of a vacuum baking oven operated by hand, the whole drying process realizes continuously full automatic control and greatly reduces labor intensity and improves production efficiency.

The invention belongs to the technique of building material analysis and relates to a method for quickly analyzing a phase component of building gypsum. The defects in the prior art are as follows: the demand on analytical instrument is high, the demand on the test condition is high, the analysis time is long and the operation steps are complex. The method comprises the following three steps: for quickly finishing the phase component analysis for the building gypsum, by utilizing the principle that the building gypsum loses the adhered water at 50 plus/minus 5 DEG C, loses all the crystal water above 180 DEG C and can have hydration reaction with water, the anhydrous gypsum in the building gypsum can combine with water in a 95% ethanol solution so as to form the hemi-hydrated gypsum, and the dihydrate gypsum cannot be generated by combining the hemi-hydrated gypsum with the water, wherein the three steps are as follows: measuring the contents of the adhered water and the anhydrous gypsum, measuring the content and purity of the hemi-hydrated gypsum, and measuring the content of the dihydrate gypsum. The method provided by the invention has the advantages that the analysis device is simple, only one halogen moisture tester is required, the test time is short, and the analysis result has stability and repeatability.

A composite metal block is prepared from the powdered material with high smelting point and the metallic material with lower smelting point through loading them in an infiltration container, putting the container in heater, vacuumizing while preheating, heating untile the temp is higher than the smelting point of metallic material bue lower than the smelting point of powdered material for smelting the metallic material to become liquid, holding the temp while pressurizing, and cooling. Its advantages are high infiltration speed, high uniformity, and large size of product.

The invention provides a test device and method for calibrating hydrogen concentration, the test device for calibrating hydrogen concentration comprises a reflective schlieren system and a calibrationbox, and the calibration box is made of a polymethyl methacrylate material; two threaded holes of 10 mm are formed in the upper portion of the calibration box, threaded connection is adopted, one threaded hole is an air inlet hole and connected with an air inlet pipe, and the introduction amount of hydrogen is controlled through a flow valve; the other threaded hole is used as an exhaust hole andis fixedly provided with a hydrogen sensor; the calibration box is located in a to-be-measured flow field area of the reflection type schlieren system, it is guaranteed that the calibration box and the reflection type schlieren system are consistent in center height, and a high-speed camera is used for shooting schlieren images. The relation between the gray value and the concentration is directly calibrated through the schlieren technology for the first time, and the calibration result can meet the requirement for multi-scene hydrogen leakage concentration distribution visual measurement andis not limited to axisymmetric hydrogen jet flow; the calibration result has robustness and repeatability, and a proper calibration result can be selected according to the position of the knife edge.

The invention relates to a fluorogenic quantitative PCR detection kit for melissococcus pluton and a detection method thereof. The kit is especially used for detecting melissococcus pluton. The kit comprises (1) a positive standard substance, (2) a negative control, (3) a PCR reaction solution, (4) ExTaq enzyme and (5) aquae sterilisata. The invention has the advantages of (1) high stability and specificity: high specificity in detection for melissococcus pluton, no cross reaction with other bee pathogenic bacteria and excellent repeatability, (2) high sensitivity capable of reaching up to 50 copy/uL and (3) simple, convenient and quick operation: capability of completing the whole reaction within 2 hours. The kit provided by the invention can be used for diagnosing bee European foul brood and melissococcus pluton and has significance in early prevention and timely treatment of the diseases.

The invention provides an optical fiber humidity sensor based on anodic porous oxidized metal. The optical fiber humidity sensor comprises an optical fiber, wherein a porous oxidized metal film of which the thickness is 20-100 microns is adhered to the end surface of one end of the optical fiber; pores in the porous oxidized metal film are arrayed regularly and orderly; the direction of each pore is consistent to the propagation direction of light. By utilizing the porous structure film which is regular and ordered, the small-sized humidity sensor is designed, so that an outer-cavity-type Fabry-Perot interference cavity is formed; by utilizing a blood capillary effect, external water can be effectively absorbed, so that the qualitative change of transmission light is caused, the aim of monitoring the external temperature is achieved, the defects of no corrosion resistance, no electric radiation resistance and the like of a conventional electrochemical temperature sensor are overcome, and the optical fiber humidity sensor has the advantages of miniaturization, repeatability, stability and potential low cost.