98results about How to "The operation method is simple and convenient" patented technology

The invention belongs to a testing method of permeability of porous materials, in particular to a testing method of external permeability of a fiber fabric surface and a testing mold. The method comprises the following steps: firstly, laying fiber fabric to be tested into n numbered steps on a mold panel, and then, sealing to form a mold cavity; carrying out vacuum pumping treatment, measuring and recording distance Ln between each step surface and the mold panel, injecting fluid for testing by utilizing vacuum negative pressure, and recording time tn for the flow front of the fluid for testing to reach each step surface; and drawing a linear relation graph of tn and the square of Ln, fitting to obtain a slope k, and then, calculating the external permeability K of the surface of the fiber fabric to be tested according to the formula. The testing mold comprises a mold panel and a storage tank, wherein the mold panel is fixedly connected above the storage tank to form a sealed containing cavity, micropores communicated with the sealed containing cavity are arranged on the mold panel, and a liquid flow channel communicated with an external liquid injecting system is arranged at the bottom of the storage tank. The invention has the advantages of simple operation, high accuracy, strong applicability, low cost, and the like.

An electronic device and an ejection device for ejecting a separable device from the electronic device are provided. The ejection device includes a first arm, a second arm, a tray, and a tray guide. The first arm includes a pivot. The second arm is fixed on the first arm such that an angle is formed therebetween. The tray includes a base plate which has a second arm guiding element extending in a first direction on its bottom surface. The tray is movably connected to the tray guide such that the tray is movable in a second direction. When the first arm rotates relative the pivot, the first arm also compels the second arm to rotate about the pivot. In the meantime, the second arm moves along the second arm guiding element to drive the tray moving along the second direction.

The invention provides a method for measuring the content of free polysaccharides in A, C, W135 and Y cluster meningococcal polysaccharide combo, wherein the method comprises the following steps: 1) sampling: respectively taking 1ml of a meningococcal polysaccharide combo to be measured and a corresponding derivative solution of the meningococcal polysaccharide combo to be measured as a sample 1 and a sample 3; 2) centrifuging: additionally placing the meningococcal polysaccharide combo and the corresponding derivative solution of the meningococcal polysaccharide combo to be measured in centrifuge tubes; adding a sodium deoxycholate solution into each centrifuge tube, performing ice bath for 30 minutes and adding a hydrochloric acid solution; fully oscillating, centrifuging and collecting the supernatant of each centrifuge tube as a sample 2 and a sample 4; 3) calculating the concentration of the polysaccharides; and 4) calculating the content of the free polysaccharides. The method provided by the invention can measure the content of free polysaccharides in A, C, W135 and Y cluster meningococcal polysaccharide combo accurately and simply, so that the quality of products is evaluated.

The invention discloses a modularized analog simulation experiment device achieving rapid installation, excavation and disassembly and an operating method of the modularized analog simulation experiment device. The experiment device comprises a plurality of experiment frame modules which can be combined on a foundation base to form a cube structure; each experiment frame module comprises an adjusting base beam installed on the foundation base, the two sides of the adjusting base beam are each vertically provided with a vertical arm, and the top ends of the vertical arms are connected through a cross beam; baffles are installed between every two corresponding vertical arms at different heights, the module spaces formed through partition of the baffles are densely provided with excavation layer replacing devices, and the experiment frame modules are connected and fastened through side baffles installed on the side faces of the vertical arms; the experiment frame modules are filled with similar analog experiment materials, the outer surfaces of the excavation layer replacing devices are marked with scales, the excavation layer replacing devices can be pulled outwards, and excavation of the analog simulation experiment materials is achieved by pulling the excavation layer replacing device outwards. The invention further discloses the operation method of the modularized analog simulation experiment device. The modularized analog simulation experiment device has the advantages that the size is adjustable, and installation, laying, excavation and disassembly are rapid.

The invention discloses an automatic tube bundle penetrating device and method for tube-shell type heat exchanger equipment. The device comprises an ascending-descending platform and a fixed platform;a movable baffle is disposed on the ascending-descending platform; and movable supports are disposed on the fixed platform. The method includes the steps of 1, installation of the movable supports onthe fixed platform; 2, lifting of a heat exchanger tube bundle; 3, lifting and centring of a heat exchanger barrel; 4, ice making in the barrel; 5, tube bundle penetration; and 6, lifting away of thebarrel. According to the automatic tube bundle penetrating device and method, the structural design is reasonable, the operation method is simple, the barrel of a heat exchanger is placed by arranging the ascending-descending platform, the tube bundle of the heat exchanger is placed by arranging the fixed platform, the arrangement height of the barrel can be adjusted whenever possible according to demands, the tube bundle penetration process of the heat exchanger equipment with different sizes can be safely and conveniently finished, meanwhile the intervals and the opening sizes of the movable supports can be adjusted adaptively, the application range is wide, and the automation degree of the whole tube bundle penetration process is high.

The invention discloses a tool and a method for keeping full opening of a wax type thermostat. The wax-type thermostat is used for keeping the wax-type thermostat in a full-opening state. The wax-typethermostat comprises a support, a main valve, a main valve push rod, a main valve spring and paraffin, and the tool is a U-shaped structure formed by bending a rectangular thin steel plate. The toolhas the advantages that the structure is simple, the preparation is easy, the reutilization can be realized, and the operation method is rapid and convenient.

The invention discloses malachite green hapten, malachite green artificial antigen and preparation methods of the malachite green hapten and artificial antigen. The malachite green hapten retains the feature structure of malachite green, and has active arms which are derived from different microdomains of the structure of malachite green, have different electron cloud densities and different carbon chain lengths, are suitable to be coupled with macromolecule carriers, and are amide linkage with amino or carboxyl tail end. The malachite green artificial antigen prepared with leucomalachite green hapten has very high specificity and sensitivity when applied to detection of the residual quantity of leucomalachite green and malachite green, and is high in accuracy and recovery. Moreover, the methods are simple, the cost is low, and a fast, sensitive, economical and efficient malachite green immunodetection method is established.

The invention relates to a microfluidic two-aqueous phase droplet flow method for simple and rapid detection of urea and a device thereof. The method includes the steps of: taking a mixed solution ofa neutral red indicator, a to-be-detected sample and polyethylene glycol as the internal aqueous phase, and adopting a urease and glucan mixed solution as the external aqueous phase. According to themicrofluidic device, the shearing action of the two-phase fluid is utilized to form 10-30 nano-liters of two-aqueous phase droplets, enzymatic reaction is carried out on urea and urease in the droplets and at the interface, the product ammonium carbonate enables the neutral red indicator in the droplets to discolor, and according to the discoloration degree, whether the sample contains urea can bejudged and the urea content can be analyzed, one sample detection only needs 10-20sec, and the enzyme-containing external aqueous phase solution can be recycled. The method provided by the inventionhas the advantages of wider detection range, low operation cost, simplicity, rapidity and environmental friendliness.

The invention relates to the field of gene engineering, in particular to a reagent for simultaneous extraction of DNA and RNA, a method for simultaneously extracting the DNA and the RNA and application of the reagent. The reagent comprises a natural saccharide compound, a heavy metal salt compound, a neutral salt compound, a thiocyanic acid compound, an alcoholic compound, an organic solvent compound, a phenolic compound, N-lauroylsarcosine and a salt compound used for adjusting the acidity or alkalinity of a solution. The reagent for extracting the DNA and the RNA is optimized, protection to the DNA and the RNA is enhanced, the whole extraction process can be conducted at room temperature, cooling treatment does not need to be conducted, and the needs of follow-up second-generation sequencing and third-generation sequencing can be completely met. The operation method is simple and rapid, the quantity demand of samples is less, and the purity and the concentration of extracted DNA and RNA are high.

The invention provides an enzyme-linked immunosorbent assay kit for detecting a porcine epidemic diarrhea virus antibody, wherein the kit takes a recombinant protein of a porcine epidemic diarrhea virus N protein as an envelope antigen and comprises the following components: a coating solution, a blocking solution, a serum diluent, a substrate coloring solution and a stop solution. The PEDV ELISAdetection kit disclosed is used for detecting the PEDV antibody, and the PEDV ELISA kit has good sensitivity and specificity after being compared with the PEDV detection kit sold in the market. Meanwhile, the amount of the sample required by the kit is small, the operation method is simple and rapid, the cost is low, the kit is suitable for the diagnosis of the porcine epidemic diarrhea in the livestock breeding industry and the detection of the PEDV pathogen in the laboratory, and has great significance in the development of the breeding industry.

The invention provides a method for raising solanaceous vegetable seedlings by grafting. The method comprises the steps of cutting off certain internodes, below the fifth nodes and above cotyledons, of stock seedlings; drilling an inserting port downwards in a stock cut, wherein the depth of the inserting port is 5mm-10mm, and the inclination of the inserting port is 30 degrees to 60 degrees; inserting a scion with one or two true leaves into the inserting port, and enabling the basal part of the stem of the scion to make full contact with a cambium of the inserting port of the stock; mulching the surface of a plant with a film to carry out sealing and moisture retention after grafting, and maintaining the air humidity to be above 95% inside the film for seven to ten days to promote the inserting port of the stock and the scion to coalesce and survive; opening the film to ventilate and harden seedlings gradually after the inserting port coalesced. According to the method for raising the solanaceous vegetable seedlings by the grafting, small seedlings (stock seedlings and scion seedlings) of short seedling stages are utilized, and the grafting is carried out by adopting a top grafting method which is simple and fast in operation. Through the adoption of the method, seedling cultivating time can be shortened, and seedling cultivating cost can be reduced.

The invention relates to a method for preparing fluorescent carbon quantum dots by taking metformin as a precursor. The method comprises the following steps: step 1, carrying out hydrothermal reactionon metformin hydrochloride and dithiodibenzoic acid to generate a carbon quantum dot stock solution; step 2, filtering out impurities from the carbon quantum dot stock solution to form filtrate; step3, after the filtrate is subjected to heating and magnetic stirring treatment, attaching carbon quantum dots in the filtrate to a first filter membrane through the first filter membrane; and step 4,drying the first filter membrane to obtain carbon quantum dot powder. The purity of the final product is higher than that of fluorescent carbon dots with natural organic matter as a carbon source, thereaction process and structure can be analyzed, no toxic reagent is added, the operation method is simple and convenient, and finally the fluorescent carbon quantum dots with high fluorescence emission intensity can be prepared on a large scale.

The invention discloses a drone type tree insect-proof coating spraying device. The spraying device comprises a drone, a connecting column is arranged at the lower end of the drone, a box body is arranged at the lower end of the connecting column, a surrounding type spraying mechanism is arranged at the front end of the box body, and an anti-collision mechanism is arranged on the spraying mechanism; a liquid storage mechanism for storing insect-proof coating is arranged in the box body, the liquid storage mechanism is connected with the spraying mechanism, and a stirring mechanism for preventing insect paint from solidifying is arranged in the liquid storage mechanism; and an adjusting mechanism for keeping the center of gravity is arranged in the middle of the box body, and a plurality ofevenly-distributed buffering mechanisms are arranged at the bottom end of the box body. The spraying device has the beneficial effects that the spraying device can conduct spraying around a tree trunk, a rack can rotate outwards, after reaching a proper position, the spraying device automatically rotates inwards to return to an initial position, and at the moment, the rack surrounds the outer side of the tree trunk, so that the spraying range is enlarged, and the working efficiency is improved.

The invention discloses a method and a device for pose measurement and a storage medium. The method comprises the following steps: acquiring a plurality of object photos taken at different positions and pose parameters of a shooting device when taking photos; constructing a virtual three-dimensional scene according to the object photos, and matching the virtual three-dimensional scene with a realthree-dimensional environment according to the pose parameters of the shooting device; and calculating pose parameters of an object according to the position information of the object in the real three-dimensional environment. According to the method and device for pose measurement and storage medium, remote measurement of the object pose can be achieved, operation is very simple and convenient, no measurement personnel are required to climb, and the risk of measurement is effectively eliminated.

The invention belongs to the field of rock test, and in particular relates to a method for testing soft soil micro disturbance. The method comprises the following steps of: flattening the ground of a region to be tested; then horizontally arranging a soil body disturbance device in the region to be tested, wherein heavy hammer weights are arranged on the soil body disturbance device; selecting the heavy hammer weight having the corresponding mass according to disturbance energy required by a soil body, and arranging the selected heavy hammer weight at the corresponding height and enabling the selected heavy hammer weight to fall down so as to make disturbance on the soil body in the region to be tested; taking away the soil body disturbance device, and spreading yellow sand on the soil body in the region to be tested; and finally testing the soil body in the region to be tested according to the K30 test to obtain a K30 coefficient of the soil body in the region to be tested. The method has the advantages that disturbance at different degrees can be applied to the soil body on the site, so that the tested soil body parameters can better accord with actual data; the distortion of the soil taking test in a laboratory and the boundedness of the test after construction are effectively avoided; the soil body disturbance device is simple in structure; and the operation method is simple and convenient.

The invention discloses a roll bending forming die and a forming method of a large-curvature semi-arc-shaped pipe orifice reinforcing part. The forming die comprises a forming cam, a forming concave wheel and a driven concave wheel; the forming cam, the forming concave wheel and the driven concave wheel are respectively mounted on three different rollers of an asymmetric three-axis roller bendingmachine; during forming, blank positioning is carried out firstly, then the relative position relation between the forming cam, the forming concave wheel and the driven concave wheel is set, then thethree-axis roll bending device is used for forming, and finally, the pipe orifice reinforcing part passes between the three synchronous rotating rollers and continuously generates axial and longitudinal plastic bending deformation, so that the required cross-sectional shape and the radian shape are obtained.

The invention discloses an electrician training testbed simulation method and system. The method comprises the following steps of: modeling a laboratory environment, a test table structure and all thecircuit principal models of an electrician training testbed so as to obtain a simulation model of the electrician training testbed; setting the simulation model, and establishing a scene setting module, a scene display module and a scene operation module of the simulation model so as to obtain a simulation model capable of selecting circuit principles; and verifying the obtained simulation modelto obtain a correct simulation model. The method and system are supplemented with existing entity equipment, do not generate dangerous situations in simulation software, do not cause equipment damagein using processes, and do not need to be arranged and maintained after teaching, and can complete online teaching and management. The method is simple, rapid and convenient to use.