361results about How to "Improve binding stability" patented technology

The present disclosure describes a method of adapter ligation to the ends of fragmented double-stranded DNA molecules.

The invention relates to spherical active carbon having the following pore size distribution: a) 1.2 1.7 nm: 20-50%, b) 1.7 2.1 nm: 20-50%, c) 2.1 2.5 nm: 10-25%, d) 2.5 2.9 nm: 3-15%, e) 2.9 3.3 nm: 1-10%. The sum of a) to e) is at least 88%. The difference between the sum of a) to e) in relation to 100% corresponds to a proportion of pores having a diameter of <1,2 nm and / or >3,3 nm. The fractal dimension of the open porosity is at least 2.30.

The invention belongs to the technical field of catalysts, and particularly relates to a preparation method of a metal monatomic catalyst, which comprises the following steps: in a first protective gas atmosphere, carrying out laser treatment on a mixed solution containing a metal material and a dispersing agent to obtain a metal monatomic mixed solution; mixing the metal single atom mixed solution with a substrate material, and then carrying out hydrothermal reaction to obtain a precursor loaded with metal single atoms; and in a second protective gas atmosphere, mixing the precursor with a nitrogen-containing compound, and sintering to obtain the nitrogen-doped metal monatomic catalyst. According to the preparation method of the metal monatomic catalyst, the metal monatomic catalyst can be obtained only through simple laser treatment, hydrothermal reaction and sintering treatment; the metal monatomic active site catalysis is achieved, the catalytic performance of the material is improved, operation is easy, and industrial large-scale production and application are easy to achieve.

The invention discloses an electronic cigarette atomizer. The electronic cigarette atomizer comprises an e-liquid storage cavity and an atomizing assembly; the atomizing assembly comprises a porous body and a porous transition layer which are stacked; the porous transition layer comprises a first surface back on to the porous body, and a heating element is arranged on at least a part of the firstsurface; the porous body comprises a first material, the heating element comprises a second material, and the porous transition layer comprises a first material and a second material. According to theatomizing assembly adopted by the atomizer, connection between the porous body and the heating element is achieved through the transitional porous transition layer, on one hand, the interface difference between the two materials when the porous body is directly combined with the heating element can be eliminated, and the combination stability is improved, on the other hand, the performance of thetransition layer can be slowly changed along with changes of components and structures of the materials, and the consistency of resistance values of various areas of the sintered heating element canbe ensured.

The present invention provides one kind of triple anti-fake material including carrier and anti-fake powder. The carrier is made with polyvinyl alcohol, polypropenyl alcohol, polyamide or viscose fiber; and the anti-fake powder includes thermochromic material, fluorescent material and infrared material. Of the anti-fake powder, the thermochromic material is 1-6 wt% of the carrier, and each of the fluorescent material and the infrared material is 0.5-3 wt% of the carrier. The multifunctional anti-fake material of the present invention has raised anti-fake effect and fast combination with paper base.

The invention relates to an automatic production line for shoes. The automatic production line comprises an automatic vamp gluing device and an automatic sole gluing device. The automatic vamp gluing device comprises a first conveying belt, a first driving assembly and a first automatic glue spraying control assembly. The first automatic glue spraying control assembly comprises a three-dimensional scanning mechanism, a first processing water spraying mechanism, a first processing water drying mechanism, a first glue spraying executing mechanism and a first glue drying mechanism, wherein the three-dimensional scanning mechanism, the first processing water spraying mechanism, the first processing water drying mechanism, the first glue spraying executing mechanism and the first glue drying mechanism are located above the first conveying belt and adjacently connected in sequence. The first glue spraying executing mechanism comprises a controller, a first six-degree-of-freedom mechanical hand and a first spray gun, wherein the enable end of the controller is connected with the three-dimensional scanning mechanism, and the first spray gun is installed on the arm of the first six-degree-of-freedom mechanical hand. The invention further relates to an automatic manufacturing method for the shoes. According to the automatic production line and the automatic manufacturing method for the shoes, glue wastage can be greatly reduced, the vamp glue spraying effect consistency is improved, then the follow-up vamp and sole gluing firmness degree is improved, the service life of the shoes is prolonged, and the quality of the shoes is improved.

The invention relates to a graphene-doping conductive polymer modified metal bipolar plate of a proton exchange membrane fuel cell and a preparation method of the metal bipolar plate, belonging to the technical field of a fuel cell. The bipolar plate comprises a metal plate, a polarity oxide film layer and a graphene-doping conductive polymer film layer, wherein the polarity oxide film layer covers the surface of the metal plate, the graphene-doping conductive polymer film layer covers the surface of the polarity oxide film layer, and the thickness of the graphene-doping conductive polymer film layer is 0.005-0.3 millimeter, the thickness of the polarity oxide film layer is 5-30 nanometers, and the thickness of the metal plate is 0.1-2 millimeters. A graphene-doping conductive polymer film is deposited on the surface of a stainless steel plate after preprocessing by an electrochemical synthesis method, the metal bipolar plate prepared according to the invention has the advantages of relatively low contact resistance, low corrosion current density and high bonding firmness of the metal substrate and the conductive polymer film, moreover, the method is simple, the processing cost is low, and mass production can be achieved.

The invention discloses a loudspeaker module which comprises a shell and a loudspeaker body fixedly contained in the shell. A sound outgoing hole corresponding to the loudspeaker body is formed in the shell and used for outgoing of sound. A shielding part is arranged at the position, corresponding to the sound outgoing hole, inside the shell. The shielding part covers the sound outgoing hole and is of a nonmetal net structure. The shielding part of the nonmetal net structure and the shell are integrally formed in an injection molding mode. The loudspeaker module has the advantages of being good in acoustic performance, high in reliability, good in space use ratio and high in production efficiency.

The invention discloses aramid 1313 / MWCNT (Multi-Walled Carbon Nanotube) nano fibers and a preparation method thereof. The preparation method comprises the following steps of: obtaining MWCNTs grafted with octyl phenoxy poly ethoxy; uniformly dispersing the grafted MWCNTs into a solvent by ultrasonic treatment so as to obtain a solution containing the MWCNTs; obtaining a dissolution system containing halide, adding aramid 1313 fibers into the dissolution system and stirring to dissolve the aramid 1313 fibers so as to obtain a solution containing the aramid 1313 fibers; mixing the two solutions to obtain a spinning solution; by adopting an electrostatic spinning method, obtaining a nano fiber felt of which the fibers are directionally arranged; and obtaining the strengthened nano fiber felt by adopting thermal stretching treatment. According to the invention, the aramid 1313 / MWCNT nano fibers are obtained; the orientation degree of the aramid 1313 is improved; and the tensile breaking strength and the initial modulus of the fiber felt are improved.

The embodiment of the invention relates to the field of immunodetection, in particular to a human serum amyloid protein A determination kit with high sensitivity and a wide detection range. The humanserum amyloid protein A determination kit comprises a reagent 1, a reagent 2 and SAA calibrators with different concentration gradients, wherein the reagent 2 comprises carboxylated latex microspheresonly labeled with human SAA monoclonal antibodies and carboxylated latex microspheres only labeled with human SAA polyclonal antibodies; the average particle size of the carboxylated latex microspheres only labeled with the human SAA monoclonal antibodies is larger than the average particle size of the carboxylated latex microspheres only labeled with the human SAA polyclonal antibodies. The kitcan be used for detecting a single sample within 10 minutes; the kit has the advantages that the kit is simple in structure and excellent in precision, accuracy, linearity, interference resistance andother indexes, can well diagnose early inflammation of infectious diseases, can detect the content of SAA in serum and the content of SAA in blood plasma, is very suitable for clinical biochemical analyzers, and greatly facilitates clinical examination.

The invention relates to a preparation method of an ion membrane electrode for pure water electrolysis, belonging to the technical field of hydrogen production by water electrolysis. The preparation method comprises the following steps: separately preparing a cathode catalyst solution and an anode catalyst solution from a cathode catalyst, an anode catalyst, a Nafion solution, isopropyl alcohol, glycerol and distilled water; separately applying the cathode catalyst solution and the anode catalyst solution on two transfer-printing templates, and drying the templates at the temperature of 80-130 DEG C in vacuum; and fixing the two dried transfer-printing templates on both sides of an ion membrane, treating at the temperature of 130-190 DEG C and the pressure of 6 MPa for 2-5 minutes, cooling to room temperature while maintaining the pressure at 6 MPa, peeling off the transfer-printing templates, placing the templates in an oven and treating in vacuum at the temperature of 70-110 DEG C for 1 hour. By using the transfer-printing templates in the preparation method, under the premise of ensuring the combination firmness degree of the ion membrane and the catalyst layer, the direct damage to the ion membrane is reduced, thereby the service life of the membrane electrode is prolonged, the energy consumption is lowered, the electrolysis efficiency is improved, the preparation time is shortened and the production cost is reduced.

The invention relates to a defected-tooth implanting or restoring technology, in particular to a bushing-type oral implanting device which is characterized in that at least two grooves with openings on the upper ends are distributed on a cylindrical surface through which an implanting body is connected with a base station; the upper end of the base station is provided with lug bosses which are matched with the grooves; the combination length of the implanting body and a tubular connecting handle of the base station is nearly 1 / 2 or more of the length of the implanting body so that the implanting body can be embedded in shaped holes on the alveolar bone to shorten the operation time; the implanting body has good bone extruding effect, thus the early-stage stability and the later-stage osseointegration stability after the operation are improved, and the use effect after the healing is enhanced; the contact surface of the thread-type implanting body and the alveolar bone is enlarged, thusthe implanting body and the alveolar bone can be more firmly combined, and the implanting quality of the implanting body is improved; the base station and the implanting body are more tightly connected and are more firmly combined, thus the operation is more convenient; the bushing-type oral implanting device can be operated conveniently and can be well combined with the alveolar bone; the implanting body has good stability and can bear larger lateral force with little or no inclination; the base station and the implanting body can be adjusted in angle and can be connected in high precision;and the bushing-type oral implanting device can inhibit the bone resorption.

The invention belongs to the technical field of material chemistry, and particularly relates to a method for in-situ preparing a nano-silver compound bactericide. The method is that a hydroxyapatite nano assembled ball chain with the length of micron order is taken as a carrier, the characteristics of the large surface area and high surface activity of the hydroxyapatite nano assembled ball chain are utilized, silver ions are converted into nano-silver on the hydroxyapatite surface through in-situ reduction reaction, so a hydroxyapatite / silver compound bactericide is prepared. The nano-silver compound bactericide has high chemical stability, good recovery performance, and can effectively kill various bacteria, the bactericidal efficiency is greatly improved because of the larger surface area of the nano-silver compound bactericide, under the premise of realizing the same bactericidal effect, the bactericide usage can be saved by about 30-40% compared with pure nano-silver, and the nano-silver compound bactericide has very strong industrial practicability.

An automatic footwear production line with using space saved comprises an automatic vamp glue applying device and an automatic sole glue applying device, wherein the automatic vamp glue applying device and the automatic sole glue applying device are vertically arranged and adjacent to each other, the automatic vamp glue applying device comprises a first conveying belt, a first driving assembly and a first automatic glue spraying control assembly, the first automatic glue spraying control assembly comprises a three-dimensional scanning mechanism, a first treating water drying mechanism, a first glue drying mechanism and a first multi-station hoisting manipulator device, the first multi-station hoisting manipulator device comprises a controller, a first six-freedom-degree manipulator, a first transverse-movement control mechanism, a first spraying gun and a second spraying gun, and the first transverse movement control mechanism comprises a first fixing frame, a first guiding assembly, a first moving table and a first transmission assembly. Due to the automatic footwear production line, it can be guaranteed that the amount of glue sprayed to all the portions of a vamp tends to be consistent, waste of glue is greatly reduced, consistency of the glue spraying effect of vamps is improved, then, it is guaranteed that firmness degree of subsequent adhering between vamps and soles is improved, the service life of footwear is prolonged, and quality of footwear is improved.

A space-saving vamp glue spraying device comprises a first conveying belt, a first driving component and a first automatic glue spraying control component. The first automatic glue spraying control component comprises a three-dimensional scanning mechanism, a first treatment water drying mechanism, a first glue drying mechanism and a first multistation lifting manipulator device, wherein the first multistation lifting manipulator device comprises a controller, a first six-degree-of-freedom manipulator, a first sidesway control mechanism, a first spraying gun and a second spraying gun. The first sidesway control mechanism comprises a first fixing mount, a first guide assembly, a first moving platform and a first drive assembly. The invention further provides an automatic vamp glue spraying method adopting the space-saving vamp glue spraying device. By the space-saving vamp glue spraying device and the automatic vamp glue spraying method, glue sprayed to various parts of vamps tends to be uniform, waste of the glue is greatly reduced, uniformity in glue spraying is improved, follow-up bonding fastness of the vamps and shoe soles is improved, service lives of shoes are prolonged and quality of the same is improved.

The invention provides an application of a general formula AM<2>O<5-x> compound as a catalyst for catalyzing VOC combustion. The general formula AM<2>O<5-x> compound is a mullite-type composite oxide,wherein A is any one metal or more of lanthanide metal elements, Bi and Y, M is one or more of first transition series transition metal elements, and x is between 0 and 1. The general formula AM<2>O<5-x> compound has relatively good catalytic effects on VOC combustion. The AM<2>O<5-x> compound is the mullite-type composite oxide, binding energy between the components is relatively large, and thusstability of the compound for catalytic VOC combustion is relatively high, and a service life of the compound is relatively long. The AM<2>O<5-x> compound does not contain precious metals, and thus the cost is relatively low. At the same time, a preparation method of the compound is relatively mature and simple in the prior art, so that mass production can be carried out for large-scale VOC treatment; and further, after experimental verification, the compound is suitable for VOC treatment in different industries.

The invention discloses a method for assembling a non-metallic flexible net at sound holes of an acoustic device. The method comprises the following steps of (1) manufacturing a base plate, and forming a plurality of hollow holes in the base plate; (2) manufacturing a non-metal flexible net belt, adhering the flexible net belt to the base plate, and covering all hollow holes; (3) putting the base plate adhered with the flexible net belt into a first injection mold, and carrying out injection molding on the flexible net belt corresponding to each hollow hole to form annular first injection molding bodies which are combined together with the flexible net belt; (4) cutting the flexible net belt around the first injection molding bodies, so as to obtain an independent first injection molding piece; and (5) putting the first injection molding piece into a second injection mold, carrying out secondary injection molding to form an acoustic device casing which is combined together with the first injection molding piece, and using inner holes of the first injection molding bodies as the sound holes of the acoustic device. The method has the advantages that the assembly of the non-metal flexible net belt is convenient for operation, and the assembly efficiency and the assembly quality are improved.

The invention discloses a water-soluble fluorescent whitening agent for coarse whiting powder. The water-soluble fluorescent whitening agent for the coarse whiting powder is of the following structural formula 1 as shown in the description. The invention aims at providing the water-soluble fluorescent whitening agent for the coarse whiting powder as well as a preparation method and application thereof; the method is simple; the prices of raw materials are low; a process is green and environment-friendly. By adopting the fluorescent whitening agent provided by the invention, calcium carbonate powder can be effectively whitened and brightened; the fluorescent whitening agent also has a surface modification effect at the same time.

The invention provides a dicarboxylic acid heavy calcium carbonate powder fluorescent whitening agent. The dicarboxylic acid heavy calcium carbonate powder fluorescent whitening agent is characterized by having a structural formula 1 shown in the specification. The invention aims to provide the dicarboxylic acid heavy calcium carbonate powder fluorescent whitening agent as well as a preparation method and application thereof, the method is simple, the raw materials are low in price, and the process is green and environment-friendly. The heavy calcium carbonate powder treated by adopting the fluorescent whitening agent provided by the invention has relatively high whiteness and brightness, and relatively good fluidity and dispersity, so that the dicarboxylic acid heavy calcium carbonate powder fluorescent whitening agent is an excellent multifunctional fluorescent whitening agent.

The invention discloses an antibacterial plastic master batch and a manufacturing method thereof and an antibacterial chopping board prepared from the antibacterial plastic master batch. The master batch is prepared by mixing and granulating an antibacterial master batch composition, wherein the composition comprises 15 to 95 weight parts of plastic component, 1 to 25 weight parts of antibacterial agent component and coupling agent. The method for preparing the antibacterial plastic master batch comprises the following steps of: treating plastic raw materials into plastic powder with particle diameter of 1 to 165 microns, wherein the plastic powder is used as the plastic component; pressing, mixing and kneading the plastic component, the antibacterial agent and the coupling agent for 10 to 40 minutes at the temperature of between 75 and 138 DEG C to form semi-finished product raw materials; and mixing the semi-finished product raw materials at the temperature of between 100 and 180 DEG C, extruding, and thus obtaining the granular antibacterial plastic master batch. The antibacterial chopping board prepared from the antibacterial plastic master batch obtained by the preparation method has better antibacterial effect.

The invention relates to a flexible wear resistant ceramic material and its preparation method. Raw materials of the ceramic material provided by the invention comprise a wear resistant aggregate, a wear resistant fine powder, ceramic fibers and a binder. The preparation method provided by the invention comprises the following steps of: mixing sintered magnesia, quartz sand and corundum to prepare the wear resistant aggregate, mixing fine magnesia sand and quartz sand to prepare the wear resistant fine powder, mixing the wear resistant aggregate, the wear resistant fine powder and the ceramic fiber, adding the binder, and mixing again to prepare the wear resistant ceramic material. In the absence of water and in the presence of cement, bonding, polymerization or condensation of the wear resistant material, the ceramic material and the binder is successively carried out to form the flexible wear resistant ceramic material with high temperature resistance, wear resistant and high strength resistance. The preparation method is simple and convenient; the wear resistant ceramic material prepared has low porosity, beautiful appearance and high density; by the utilization of the wear resistant ceramic material, water resources are saved, the production cost is reduced and the consumption of labor force is minimized; the raw materials are low in price, are convenient to purchase, and have abundant sources.

A socket connector comprises an insulating base body, a metal shell body, a first terminal group, a second terminal group and a third terminal group. The insulating base body comprises a base and an assembly groove. A tongue plate unit comprises a main body and a combination body, wherein the main body is provided with an inserting part and a jointing part which are arranged at the front and at the rear; and the combination body and the jointing part are combined into a whole body and are jointly installed in the assembly groove to be combined and fixed with the insulating base body. The first terminal group is embedded in the main body in a molding manner. The second terminal group is fixedly arranged on the base; and each second terminal is provided with a second elastic part and a second fixed part, wherein the second fixed part bends from the rear end of the second elastic part, extends upwards and is propped against the base. The third terminal group is embedded in the combination body in a molding manner. All the terminals have good fixing performance and can strengthen the structural strength of the tongue plate unit and the combination stability of the tongue plate unit with the insulating base body.

The invention is suitable for the field of motors and provides a series motor stator iron core, a series motor stator, a manufacturing method of the series motor stator, and a series motor, wherein two iron core parts are spliced along the circumferential direction along the series motor stator iron core, each iron core part comprises a sub stator yoke and a stator tooth arranged on the sub stator yoke in a projected manner. The sub stator yoke comprises a first arc-shaped yoke part, a straight yoke part whose one end is connected with one end of the first arc-shaped yoke part, and a second arc-shaped yoke part whose one end is connected with the other end of the straight yoke part. The stator tooth is arranged on the first arc-shaped yoke part in a projected manner. The first arc-shaped yoke part and the second arc-shaped yoke part of one iron core part are respectively connected with the second arc-shaped yoke part and the first arc-shaped yoke part of the other iron core part. According to the invention, the winding efficiency of a stator winding is improved; sizes of end parts, projected from two ends of the stator iron core along the axial direction of the stator iron core, of the stator winding are reduced; the coil perimeter of the stator winding is reduced, the utilization rate of the stator winding is improved, and the cost of the series motor is lowered.

The invention discloses a solid and liquid separation technique of water based system well drilling waste slurry, which includes the procedures that: (1) slurry preparation, water or well drilling wastewater is added to adjust the density of the water based system well drilling waste slurry not to be more than 1.20 g / cm<3>; (2) acidification and gelout, gel breaker sulphuric acid is added to adjust the pH value of the waste slurry after the density is adjusted not to be more than 5, and the acidification and gelout and stability elimination reaction are performed; (3) solid and liquid separation, the waste slurry liquid after being performed the full acidification and gelout and stability elimination reaction is fed into a solid and liquid separation device for the solid and liquid separation, so as to cause the solid phase and the liquid phase of the waste slurry to be separated. The solid and liquid separation technique of the water based system well drilling waste slurry provided by the invention fully solves the key technical problem that the water based system well drilling waste slurry is difficult to perform the solid and liquid separation, and establishes the reliable base for the innocent treatment of the water based system well drilling waste slurry.

The present invention relates to one kind of electroluminescent material of dendritic functional Ir(III) metal organic complex. The electroluminescent material has surface functional radical of triarylamino, 1, 3, 4-furodiazole or alkyl carbazole, with the radical of triarylamino, furodiazole or carbazole carrying also long chain alkyl, alkoxl or fluoro radical, so that it has raised carrier implantation function and greatly improved dissolubility and filming performance. The electroluminescent material may be used in preparing single layer electroluminescent device through direct rotary spraying process, and this provides new way for making large size OLED device. The electroluminescent material contains two kinds of ligands, including the first ligand to regulate the luminescent color and the second ligand to raise the stability of the material.

The invention relates to a drug-loaded embolism microsphere with a developing function and a preparation method thereof, and belongs to the technical field of medical instruments. The preparation method of drug-loaded embolism microsphere with the developing function under X-rays comprises the following steps of step 1, preparing a reversed-phase suspension polymerization oil phase; step 2, preparing an aqueous phase of a reversed-phase suspension polymerization system; and 3, carrying out reverse suspension polymerization. The method has the advantages that iodide reacts with microsphere hostmolecules in the synthetic reaction process, a steric hindrance effect is avoided, the reaction is more sufficient, the iodine element is uniformly distributed in the microspheres, and a complete andclear development image is formed under X-ray fluoroscopy; the iodine-containing alcohol is used as an X-ray-impermeable substance, so that the safety risk caused by additional addition of an organicsolvent or addition of a toxic and difficult-to-remove organic solvent is avoided; the microspheres are high in hydrophilicity, good in expansion capacity and rapid in adsorption and drug loading capacity and high in drug loading capacity. The preparation method is simple and can be completed through one-time polymerization reaction, and grafting modification and then polymerization reaction arenot needed.

The invention discloses a compound thermal insulation plate for thermal insulation of a wall body and a manufacturing method and a using method thereof, which is characterized in that the compound thermal insulation plate consists of a panel, a thermal insulation body, a combined fixed sleeve, a positioning expansion sleeve, a bolt, a T-shaped connecting strip, a T-shaped connecting plate, a rotation angle connecting plate and a blind rivet; the compound thermal insulation plate can be prepared in advance or combined and installed on the field; when in use, the compound thermal insulation plate can be fixed on an exterior wall of a building through the positioning expansion sleeve and the bolt, and the compound thermal insulation plate and the exterior wall of the building can form a smooth and stable whole under the action of the combined fixed sleeve, the positioning expansion sleeve, the bolt and other connecting parts. The compound thermal insulation plate can not only lead the material for the thermal insulation of the wall body to obtain permanent envelope, but also improve the fire-protection rating, meet the requirements of decorative surfaces of different exterior walls, shorten the construction cycle and reduce the engineering cost.

The invention relates to an all-solid-state lithium battery of a sulfide electrolyte, and discloses a low-internal-resistance solid sulfide electrolyte lithium battery cell, a battery and a preparation method thereof. Key points of the technical scheme of the low-internal-resistance solid sulfide electrolyte lithium battery cell are as follows: a positive electrode layer, an electrolyte layer anda negative electrode layer are formed by sequentially laminating and pressing powder of corresponding materials, a prefabricated battery cell is obtained, and the powder of the electrolyte layer is obtained by solid electrolysis of sulfide; a pressure is applied to the outer sides of the positive electrode layer and the negative electrode layer of the prefabricated battery cell in the direction ofthe electrolytic layer, and high-temperature treatment is performing for 5-10 minutes to obtain a finished battery cell; and tabs are installed on the finished battery cell, coating for the finishedbattery cell is performed by utilizing an aluminum-plastic film, and a battery shell is installed to obtain the solid sulfide electrolyte lithium battery with low internal resistance, and battery heating and cycle performance reduction caused by the internal resistance of the solid sulfide electrolyte lithium battery are slowed down.