45results about How to "Flexible application form" patented technology

The invention discloses a fibrous material with a formaldehyde removal function, and belongs to the technical field of poisonous volatile matter removal. Cation exchange fibers are used as base body materials in the fibrous material, and counting the total mass of the fibrous material by 100%, the fibrous material comprises, by mass, 24.8%-88.95% of the cation exchange fiber, 0.05%-0.2% of surface active agent, and 11%-75% of macromolecule organic amine compound. The preparation method of the fibrous material includes the following steps: (1) preparing steeping liquor according to proportion, (2) adding fibers into the steeping liquor and evenly stirring the fibers, (3) soaking the fibers in the steeping liquor for 2-4 hours under the condition of interval stirring, (4) and fishing out the soaked materials, drying the materials with hot air or natural air. The fibrous material is diversified in application form, has no secondary pollution, and is large in formaldehyde adsorption capacity, high in adsorption speed, simple in preparation process, and low in cost.

The invention provides a power system relay protection system based on wireless transmission. The power system relay protection system based on the wireless transmission comprises the following components: (1) an industrial wireless switch; (2) a wireless synchronization clock device; (3) a wireless merging unit device; (4) a wireless intelligent terminal device; and (5) a wireless protection device, wherein the wireless relay protection device comprises a wireless plugin, a management board plugin, a protection plugin, a power plugin and the like. The power system relay protection system based on the wireless transmission, provided by the invention, can effectively reduce building materials such as optical cables, copper cables and the like which are used during secondary wiring in a substation, shortens the construction period, saves the construction investment, reduces a secondary return circuit, prevents locking and misoperation of protection caused by the secondary return circuit problem improves the reliability of the protection system, is convenient to install and debug, and can reduce the workload of maintenance personnel.

The invention discloses an aptamer AFB1-01 of aflatoxin B1 and an application of the AFB1-01, and relates to a nucleic acid. The aptamer AFB1-01 of the aflatoxin B1 is prepared by a systematic evolution of ligands by exponential enrichment (SELEX) method based on agarose beads separation-flow cytometry analysis. The aptamer AFB1-01 of the aflatoxin B1 contains a G base, has a stem-and-loop structure, is high in affinity, good in stability, free of toxicity, and easy to synthetize and mark, and can be used as a potential detection reagent of the aflatoxin B1 in a sample.

An aptamer AFB1-14 of aflatoxins B1 and application thereof relate to a nucleic acid. The aptamer AFB1-14 of aflatoxin B1 is screened and prepared by an affinity SELEX method based on the agarose micro-beads-flow cytometry analysis. The aptamer AFB1-14 of aflatoxins B1 is rich in G bases and has a stem-loop structure. The aptamer AFB1-14 has features of good affinity and stability, no toxicity, easiness in synthesis and labeling, and can be used as one potential detection reagent of the aflatoxins B1 in the sample.

The invention provides a single variable domain antibody targeting human programmed death ligand 1 (PD-L1) and a derivative of the single variable domain antibody. PBMC (peripheral blood mononuclear cell) is extracted from a human PD-L1 immunized camel to construct a phage surface display VHH antibody library, an anti-human PD-L1 specific single variable domain antibody 2-2F2 is obtained through screening and identification, and a chimeric antibody chF2 and a humanized modified antibody hzF2 mutant are prepared on the basis of the anti-human PD-L1 specific single variable domain antibody 2-2F2. The affinity of the hzF2 mutant can reach or even exceed that of an initial single variable domain antibody 2-2F2, binding of PD-1 and PD-L1 can be blocked in vitro, and growth of tumors can be inhibited in a tumor-bearing mouse in-vivo test.

The invention discloses an image feature matching method capable of resisting large geometric distortion, and the method comprises the following steps: 1), matching features of an image pair comprising a reference image and a to-be-matched image to acquire a candidate feature matching point set; 2) for the candidate feature matching point set, constructing a support line set for each matching point, constructing a feature vector through a support line feature descriptor, and performing luminosity constraint mismatching preliminary filtering based on a support line voting strategy; 3) taking the affine invariant ratio as a local neighborhood geometric constraint to carry out matching point fine filtering on a primary filtering result in the step 2); calculating an affine transformation model of a local neighborhood of each feature matching point; 4) reliable matching point expansion based on a local affine transformation model; and 5) constructing a grid affine transformation model to realize registration and splicing of large geometric distortion images. The accuracy of large geometric distortion image matching, the number of matching points and the precision of the matching pointscan be greatly improved.

A method of using stable isotope to make false-proof on painting and calligraphy works includes applying isotopic separation technology to change natural isotopic abundance of element on one or two stable isotopes then mixing them to obtain false-proof cipher, mixing prepared false-proof cipher with ink of painting and calligraphy works to let painting and calligraphy works made by said ink have false-proof cipher then using laser probe and mass spectrum to analyze isotopic abundance for identifying true or false of the works.

The invention discloses a linearization method for a pre-distorted radio frequency amplifier, which utilizes a pre-distorted signal generated in the radio frequency field to improve the linearization degree of the amplifier. The method comprises a first link and a second link, wherein the first link is used for carrying out a power amplification on an initial carrier signal, and then combining the amplified signal with an amplified pre-distorted signal of the second link to output a combined signal; the second is used for firstly coupling the initial carrier signal and the combined signal and generating the pre-distorted signal through combining. The pre-distorted signal comprises the initial carrier signal and an intermodulation signal; and power amplification is carried out on the pre-distorted signal equivalent to the first link. The method comprises the following steps: combining the amplified signal of the first link and the amplified pre-distorted signal of the second link to offset the intermodulation signal, outputting a high linear combined signal, and finishing the power amplification process of the initial carrier signal. The method can realize higher working bandwidth and working efficiency and can be applied to different working environments.

The invention provides a vertical immersed type in situ water quality purification curtain screen and belongs to the field of water treatment equipment. The vertical immersed type in situ water quality purification curtain screen is mainly characterized in that the curtain screen is mainly composed of a grid system, a curtain screen purification unit, a motor transmission system and a supporting system; the grid unit is composed of grids constituted by mesh holes, grid teeth, grid tooth front hooks and side end hinge hanging teeth; the curtain screen purification unit is composed of screen door purification modules constituted by water quality purification multifunctional curtain production screen cores, side end movable hinges and peripheral screen frames; the motor transmission screen can drive the grid unit to move vertically and can drive the curtain screen purification unit to move in the horizontal direction; the work mode of the curtain screen is that the curtain screen is vertically immersed in raw water to be treated; the curtain screen has the function of in situ water quality purification. The vertical immersed type in situ water quality purification curtain screen has the advantages of being wide in application range, good in water quality purification effect, easy to operate and maintain, stable in performance after long-term operation and environmentally friendly.

The invention, which relates to the field of 3D display, discloses a reflective geometric holographic film based on two-dimensional characteristics and a preparation method and application thereof. the reflective geometric holographic film comprises a primitive membrane and a plurality of columnar primitive prisms that are arranged on the surface of the primitive membrane in an array manner and have cross sections in a right triangle shape. The surfaces where the bevel edges of the cross sections of the columnar primitive prisms are located are attached to the surface of the primitive film; and a plurality of transparent layers and reflecting layers which are arranged at intervals are arranged in the primitive film in the length directions of the columnar primitive prisms; a layer of reflecting film is arranged on the inclined plane where the right-angle side of the cross section of each columnar primitive prism is located, and the error range of the right angle included in the cross section of each columnar primitive prism and the angle formed by the transparent layer, the reflecting layer and the length direction of the columnar primitive prism is within +/-5 degrees. After simple cutting and machining based on two-dimensional characteristics, large-scale production is easy to achieve; the primitive film is preferably a flexible primitive film, the excellent rate of the product is high; and the product can meet the requirements for folding, winding, storage and the like due to the flexible characteristic.

The invention discloses a pre-distorted radio frequency amplifier, comprising a first power amplifier, a second power amplifier, a first coupler, a second coupler, a pre-distorted unit and a first quadrature bridge. The first power amplifier carries out power amplification on an initial carrier signal to form an amplified signal; the first quadrature bridge combines the amplified signal with a amplified pre-distorted signal to offset an intermodulation signal to form a combined signal; the first coupler is arranged in front of the first power amplifier to couple the input initial carrier signal; the second coupler is coupled with the combined signal; the pre-distorted unit combines the initial carrier signal from the first coupler and the combined signal from the second coupler to offset to form a pre-distorted signal including the initial carrier signal and the intermodulation signal; and the second power amplifier is used for carrying out the power amplification equivalent to the first power amplifier on the pre-distorted signal to form the amplified pre-distorted signal. The invention realizes higher working bandwidth and working efficiency and can be applied to different working environments.