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343results about How to "Easy and quick to make" patented technology

Synthesis method of noble metal nano particles

The invention discloses a synthesis method of noble metal nano particles, which comprises the following steps: dissolving soluble noble metal salt and surfactant polyvinyl pyrrolidone in ethanol at room temperature, wherein the mass ratio of the noble metal salt to the polyvinyl pyrrolidone is (1:5)-(1:20); adding a reductive amount of NaBH4, and then adding n-dodecanethiol; and carrying out centrifugal separation, precipitating, and washing to obtain the noble metal nano particles. By using ethanol as the solvent, the invention is safe, environment-friendly, green and non-poisonous, thereby reducing the environmental pollution and the harm to a human body, and being beneficial to environmental protection; the synthesis process is completed at room temperature without any heating step, thereby saving the energy and ensuring that the whole preparation process is very simple and convenient; and no special equipment is required, and the process is high in repeatability, thereby being beneficial to realizing large-scale production.
Owner:NORTHWEST UNIV

Preparation method of ZSM-5 molecular sieve nanosphere with multi-level pore hollow structure

The invention relates to a preparation method of a ZSM-5 molecular sieve nanosphere with a multi-level pore hollow structure. The method comprises: taking 64ml of tetraethyl orthosilicate, 0.54g of aluminum isopropoxide and 2.24g of sodium hydroxide (1mol / L) as starting raw materials, adopting 100g of a 15.7% tetrapropylammonium hydroxide aqueous solution as a template agent, controlling the crystallization temperature at 100DEG C-200DEG C, and subjecting the obtained product to drying and roasting so as to obtain a nano-ZSM-5 molecular sieve; adding a nano-ZSM-5 molecular sieve crystal into an alkaline solution, carrying out microwave treatment and centrifugal drying, thus obtaining multi-level pore ZSM-5 molecular sieve nanosphere with a macropore-micropore or mesopore-micropore structure, with the microwave treatment time controlled at 1-25s, the microwave output power controlled at 400-900w, and the concentration of the alkaline solution maintained at 0.1-2 mol / L. By changing the microwave treatment time, the aperture of a ZSM-5 molecular sieve nanosphere hollow pore can be adjusted in the range of 30-150nm.
Owner:PETROCHINA CO LTD +1

Molding device for bridge-cutting-free heat-insulation aluminum profiles

The invention provides a molding device for bridge-cutting-free heat-insulation aluminum profiles and relates to the fields of manufacturing of the heat-insulation aluminum profiles, machining of aluminum profile doors and windows and the like, aiming at overcoming the problems of an existing heat-insulation aluminum profile manufacturing process that time and labor are wasted, the energy source consumption is great, the manufacturing cost is high and the production efficiency is low since an aluminum alloy connection part needs to be cut off after the curing. The molding device is composed of a rack, a follow fixture, a glue supplying system and a glue injection head; one aluminum profile C with the complicated section is divided into two parts to manufacture two aluminum profiles A and B with the simple sections; then the aluminum profiles A and B are put into the follow fixture; the follow fixture and the glue injection head move relatively; a glue injection nozzle is used for mixing and agitating double-component polyurethane and then pouring the mixture into a pouring groove opening B formed by the aluminum profiles A and B; a polyurethane heat-insulation strip A is formed by curing and molding the double-component polyurethane and the aluminum profiles A and B are connected integrally to achieve connection and heat-insulation effects, so that a bridge cutting procedure can be omitted. With the adoption of the molding device and method provided by the invention, the single-color or double-color bridge-cutting-free heat-insulation aluminum profiles can be machined.
Owner:DALIAN HUAGONG INNOVATION TECH

Method of manufacturing magnetic micro-structure

The invention relates to a fabrication method of the magnetic microstructure, which is characterized in that the invention comprises the fabrication of multilayer mould and the fabrication of the magnetic microstructure. The former is that the standard RCA cleaning process is used to clean silicon chips; multi layers of SU-8 photoresist are coated by rotating on the silicon chip surfaces and the multi layers of SU-8 mould are gotten after prebaking, photoetching, post baking and developing, and then the invention forms the magnetic microcolumn structure in the chip while molding dying the PDMS chip through directly filling the magnetic powders in the multilayer mould. Adopting the provided fabrication method can dispense with the electroplating process and fabricate the magnetic microstructure in the microfluid chip rapidly. The microstructure height is fabricated between micrometers less than ten and hundred of micrometers, which is determined by the photoresist layers of the rotating coating SU-8 and the magnetic microstructure is any one of the microcolumn, microline, microring or microcoil.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Method for applying ionic liquid functionalized graphene modified electrode in detection of 5-hydroxytryptamine and dopamine

The invention discloses a method for applying an ionic liquid functionalized graphene modified electrode in concurrent detection of 5-hydroxytryptamine and dopamine, wherein an amine terminated imidazole ionic liquid and the epoxy group of graphene oxide lamellas are subjected to a nucleophilic ring opening reaction to form ionic liquid functionalized graphene, and then the ionic liquid functionalized graphene is modified on a glassy carbon electrode to form a modification layer so as to concurrently detecting 5-hydroxytryptamine and dopamine. According to the present invention, research results show that the ionic liquid functionalized graphene modified electrode provides good electrocatalysis activity for oxidation of 5-hydroxytryptamine and dopamine, and can be provided for individually detecting 5-hydroxytryptamine and dopamine and concurrently detecting 5-hydroxytryptamine and dopamine, and the method has characteristics of simple detection process, high sensitivity, rapidness and convenience.
Owner:NORTHWEST NORMAL UNIVERSITY

Flexible neural microelectrode array with hollow projection structure and manufacturing method thereof

The invention relates to the field of biomedical equipment, and especially relates to a flexible neural microelectrode array with hollow projection structures and a manufacturing method thereof. The flexible neural microelectrode array with hollow projection structures comprises a flexible substrate, an insulating layer, microelectrode units, wires, and wire welding spots. The microelectrode units, the wires, and the wire welding spots are arranged on the flexible substrate. The microelectrode unit and the wire welding spots are connected through the wire. The insulating layer covers on the flexible substrate. The microelectrode unit is exposed through exposing out of the insulating layer. The flexible substrate is provided with a plurality of hollow projections exposed out of the insulating layer. The microelectrode units are arranged on the hollow projections of the flexible substrate. The flexible neural microelectrode array can effectively reduce contact resistance and mechanical strength of microelectrodes. The invention also provides a manufacturing method for the neural microelectrode array. The method comprises: coating the flexible substrate in spinning manner on a form board, then laying the microelectrode units, the wires, and the wire welding spots, and laying the insulating layer, and making the microelectrode units exposed out of the insulating layer. The manufacturing process is simple and fast, and cost is low.
Owner:ANYCHECK INFORMATION TECH +3

Analytical method for component segregation of continuous casting slab

The invention relates to an analytical method for the component segregation of a continuous casting slab, and belongs to the technical field of analysis of component segregation in steel industry. The segregation grade evaluation analytical method which is used currently has the defects of few analytical elements, uncontinuous sampling, high randomness of sampling points, no quantitation, inaccurate analytical results of the component segregation and the like. By utilizing a metal in-situ analysis meter, the invention provides an analytical method for performing continuous sampling and fine and quantitative analysis on a plurality of elements such as carbon, sulphur and the like and performing the component segregation of the continuous casting slab and capable of being displayed visually in a mode of images and texts. In the analytical method, the cross section of the continuous casting slab is taken as an analytical object, and the analytical method comprises steps of collecting samples, scanning the samples by utilizing the metal in-situ analysis meter, and displaying each scanning result by using diagrams. The analytical method has the advantages of expressing the segregation of the continuous casting slab quantitatively, having good repeatability, expressing the segregation characteristic and segregation law in the modes of points, lines and surfaces, obtaining multielement quantitative segregation results through one-time scanning results, having accurate results and a few analytical samples, and reducing the detection time and detection cost.
Owner:TIANJIN IRON & STEEL GRP

Knife bank assembly of a counter knife assembly of an integral chopper assembly of a combine harvester

An improved knife bank assembly of a counter knife assembly of an integral chopper assembly of a combine harvester that includes an elongated bracket member that extends between opposed knife bank end plates and has a plurality of spaced retainment mounts securable therealong, with at least one, and preferably two, knife blades being removably connectable to each retainment mount in a side-by-side arrangement. The bracket member is preferably mounted to a shaft member that extends between concave pan side plates to be slidable along such shaft member to permit adjustable positioning of the knife bank assembly and the knife elements thereof relative to the slots of the grate portion, and the retainment mounts are preferably removably securable to the bracket member. The knife elements are removably connectable to the retainment mounts at first and second space mounting points, preferably in such a way that the knife elements are maintained in an extended position by application of a biasing force at the second mounting point but are rotatable about the first mounting point to a displaced or relaxed position if a sufficient force is applied to the leading edge of the knife element to overcome the biasing force.
Owner:BLUE LEAF I P INC

Method and device for automatically creating multimedia message

The invention discloses a method for automatically creating a multimedia message, which comprises the following steps of: receiving the basic information of a multimedia message to be made; making a multimedia message template according to the obtained basic information of the multimedia message; obtaining the individualized service data related to a multimedia message service object as the dynamic message content of the multimedia message if the multimedia message template comprises a dynamic message part of the multimedia message; and creating an individualized multimedia message adaptive to the multimedia message template automatically according to the multimedia message template. By customizing the multimedia message template, various requirements on customers for freely making the multimedia message according to demands can be met, the individualized multimedia message adaptive to the multimedia message template can be created automatically, and thus the working efficiency for making the multimedia message can be enhanced greatly. The invention also discloses a device for automatically creating a multimedia message.
Owner:BOCO INTER TELECOM

Adjustable exercise device

An adjustable kettlebell or exercise device includes a handle device formed on a receptacle, and one or more weight members selectively engageable into the receptacle, and a control device includes a shaft engaged through the receptacle and engageable through the weight members for selectively anchoring either of the weight members to the receptacle with the shaft. The weight members each include a bore for engaging with the shaft, and an opening communicating with the bore of the weight members, and the shaft includes one or more pins engageable through the openings of the weight members for selectively engaging with the weight members.
Owner:BETO ENG & MARKETING

Power tool machine with a holding apparatus

A power tool machine includes a base, a fence, a cutting arm, a motor, a saw blade and a holding apparatus. The base has an operating surface for supporting a workpiece. The fence mounted on the operating surface has a standing surface substantially perpendicular to the operating surface for abutted by a side of the workpiece. The cutting arm pivotally coupled to the base. The saw blade mounted to the cutting arm is rotatable by the motor. The holding apparatus includes a supporting device mounted on the base, a connecting device including a body connected to the supporting device, wherein a length direction of the connecting device is substantially perpendicular to a length direction of the supporting device, an adjustable device pivotally coupled to the connecting device, and a pressing device connected to the adjustable device for selectively pressing another side of the workpiece.
Owner:REXON IND CORP LTD

Manufacturing method for simulation doll

The invention relates to a manufacturing method for a doll, in particular to a manufacturing method for a simulation doll. The method comprises the following steps of: scanning and collecting specific image information of a doll manufacturing reference target; carving and manufacturing a mould; filling and mounting joints; coloring a face; manufacturing hair; wearing clothes and shoes; and the like. Compared with the prior art, the manufacturing method for the simulation doll has the characteristics of rational manufacturing method, simple flow, low manufacturing cost, easiness in implementation, high individualization of a product and high simulation.
Owner:侯磊磊

Multi-nozzle module based on 3D (three-dimensional) printing and device and technique for large-scale production of particles

The invention discloses a technical method for large-scale production of particles by a multi-nozzle module based on a 3D (three-dimensional) printing technique and application of the technical method. The technical method is characterized in that a single nozzle is of a coaxial annular gap air blowing structure, the middle part is provided with a fluid channel, and the coaxial annular gap is an air channel; on the basis of a two-phase flow cutting principle, liquid-phase liquid is cut by air, and liquid droplet particles are produced; by controlling air and liquid outlet pressures and flow rates, the liquid droplets with different particle sizes can be obtained; the number of nozzles can be designed according to the requirement of droplet output, and liquid and air are uniformly distributed by a distributor, so as to obtain higher droplet production efficiency. The technical method has the advantages that the preparation of 3D printing nozzle modules is simple, the material cost is low, and other complicated mechanical processing methods are not required; the prepared particles are free from the pollution by poisonous matters, such as a continuous phase and surfactants; the technical method is especially suitable for preparing high-viscosity solution and suspension droplets containing insoluble particles, is widely applied to the fields of medical care, petroleum, biology, environment protection and the like, and is suitable for large-scale industrial production.
Owner:EAST CHINA UNIV OF SCI & TECH

Modified hyaluronic acid based macromolecule lipidosome and preparation method thereof

The invention relates to a modified hyaluronic acid based macromolecule lipidosome and a preparation method thereof. The grain size of the macromolecule lipidosome is 80-150 nm, and the Zeta potential is between minus 36 mV and minus 40 mV. The stearic acid modified hyaluronic acid is dissolved into dichloromethane to form an oil phase; the oil phase is subjected to ultrasonic operation at the power of 100-250 w, deionized water is added, then an ultrasonic generator is used for conducting ultrasonic dispersion to form a uniform emulsion disperse system; the emulsion is subjected to rotary evaporating on a rotary evaporator at the temperature of 25-50 DEG C and at the rotating speed of 20-100 r / min, and the macromolecule lipidosome is obtained after an organic solvent is completely volatilized. The grain size of the prepared macromolecule lipidosome is less than 150 nm and is uniform, and the dispersibility is good. The macromolecule lipidosome can freely move in blood so as to reduce the cytotoxic effect caused by positive electricity. The whole preparation process is simple and convenient, the preparation period is short, the yield is high, and the preparation method is applicable to batch production.
Owner:TIANJIN UNIV

Method for preparing oil-soluble nano-molybdenum disulfide

The invention discloses a method for preparing oil-soluble nano-molybdenum disulfide. The method comprises the following steps: uniformly mixing ammonium tetrathiomolybdate and oleylamine, continuously stirring in protection of inert gas, heating to 345-455 DEG C, and keeping for 1-2 hours; cooling to room temperature to obtain a black liquid, centrifugally collecting precipitates, and repeatedly washing with an organic solvent to obtain oil-soluble ultra-thin nano-molybdenum disulfide having a grain size of about 200nm. The nano-molybdenum disulfide prepared by the method is only formed by one layer or multiple layers of molecules, has an ultra-thin structure, and can be stably dispersed in a lubricant.
Owner:TSINGHUA UNIV

Pollution containment apparatus for making a penetration in a ceiling or wall of a building or other structure

InactiveUS6973997B2Quick and convenientAlleviate disadvantageBaby-incubatorsSuction cleanersPollutionWaste management
A pollution containment apparatus for removal of polluted material from a ceiling and / or a wall. The apparatus has a platform which can support a workperson and can be raised and lowered. A support on the platform holds a enclosure. The enclosure has gloves and a waste bag attached. A portion of the top of the enclosure can be opened and closed for access to the polluted portion of the ceiling and / or the wall. The entire completely assembled apparatus can be moved from one location to another.
Owner:BLOOM LEONARD

Composite drug carried microsphere, minocycline hydrochloride nano controlled-release composite drug carried microsphere system and preparation method thereof

The invention relates to a composite drug carried microsphere, a minocycline hydrochloride nano controlled-release composite drug carried microsphere system and a preparation method thereof. A drug carried system with a nuclear shell structure is formed by embedding minocycline hydrochloride inside a poly D,L-lactide-co-glycolic acid polymer microsphere and covering a cationic polymeric liposome prepared from O-QACMC modified by polyethylene glycol, O-QACMC and cholesterol outside the poly D, L-lactide-co-glycolic acid polymer microsphere; and the composite drug carried microsphere system covered and carried with the minocycline hydrochloride has the grain diameter ranging from 340 nm to 400 nm and positive surface Zeta electric potential. The composite drug carried microsphere system can be remained in a water solution for at least 2 months, has high entrapment rate reaching larger than 90 percent on drugs and strong drug carrying capacity reaching 9 percent. The minocycline hydrochloride nano controlled-release composite drug carried microsphere system has the characteristics of uniform and controllable grain diameter, good preparation stability, simple preparation process, high drug carrying rate, favorable controlled release function, and the like, and is suitable for batch production.
Owner:TIANJIN UNIV

Animation creation method based on data base

InactiveCN102542591ADon't Worry About Copyright DisputesGet rid of dependenceAnimationAnimation databaseTime line
The invention discloses a animation creation method based on a data base, which includes: collecting materials and data, building an enormous data base, importing a time line into the materials and the data in the data base based on the data base, performing frame compiling and animation render, placing each obtained file into the same file folder according to serial numbers, finally generating a final combination file according to the serial numbers and accordingly finishing animation works based on the animation data base. The animation creation method based on the data base sets a rule of performinganimation creation, leading junior fans who cannot draw to join a big animation-producing family to enjoy fun of animation production.
Owner:BEIJING FILM ACAD +2

Printing device and method of three-dimensional ornamentation silk screen

The invention discloses a printing device and a printing method of a three-dimensional ornamentation silk screen. The printing method comprises the following steps of: A, manufacturing a silk screen printing plate, and forming a silk screen sealing area and a silk screen penetrating area on a silk screen of the silk screen printing plate; and B, pressing the silk screen printing plate on a substrate, and injecting oil ink on the silk screen printing plate; scraping a scraper in a silk screen area of the silk screen printing plate back and forth, so that the oil ink is transferred to the substrate along the silk screen penetrating area, and the oil ink forms a three-dimensional ornamentation pattern under the influence of a magnetic field. According to the printing method provided by the invention, the silk screen sealing area and the silk screen penetrating area are arranged on the silk screen of the silk screen printing plate; the silk screen printing plate is tightly pressed on the substrate; the oil ink is injected on the silk screen printing plate; and the scraper scrapes in the silk screen area of the silk screen printing plate back and forth, so that the oil ink is transferred to the substrate along the silk screen penetrating area. Compared with the prior art, a manufacturing manner provided by the invention is simple and rapid; the oil ink on the silk screen printing plate can be circularly used for multiple times, so that the cost is lower; and furthermore, the thickness stability of the three-dimensional formed pattern can be ensured by using the scraper.
Owner:潘美珍

Block-based quick image mixing method

The invention relates to image processing, special effect manufacturing, virtual reality and the like. In order to provide a quick image mixing method, quickly synthesize a large quantity of new images on the common personal computer by using a few image samples, naturally fuse sample images with large chromatic aberration and solve the problem that block-based grain synthesis is not fine enough in the process of processing a picture with a complex structure, the invention adopts a technical scheme, namely a block-based quick image mixing method. The method comprises the following steps of: 1) analyzing grains, namely dividing each sample image into blocks in an N*N regular grid and establishing the candidate set of each position; 2) synthesizing the grains based on the blocks; 3) optimizing borders; and 4) deblurring. The block-based quick image mixing method is mainly used for the image processing.
Owner:徐州果感农业科技有限公司

Preparation method of multistage-structure bionic vascular network tissue engineering stent

The invention relates to a preparation method of a multistage-structure bionic vascular network tissue engineering stent. The preparation method comprises the following steps: (1) establishing a model of a cubic net structure by using CAD software, and then filling a heating chamber of a 3D printer with a sucrose powder to obtain a sucrose template through 3D printing; (2) preparing a polymer material solution, immersing the sucrose template in the step (1) into the polymer material solution, impregnating, taking out, and drying to obtain a polymer coating-containing sucrose template; then removing sucrose from the polymer coating-containing sucrose template through phase separation, and lyophilizing to obtain the multistage-structure bionic vascular network tissue engineering stent. The tissue engineering stent prepared by the preparation method provided by the invention can achieve structural and mechanical double-effect simulation of a vascular network; the preparation method is simple and fast, is suitable for a variety of biological materials, and has a good application prospect.
Owner:DONGHUA UNIV

Method for testing cementing strength of cement first cementing surface of oil well

The invention discloses a method for testing the cementing strength of a cement first cementing surface of an oil well. The method comprises the steps of: (1) making a simulated casing-cement ring combined structure sample; (2) vertically placing the simulated casing-cement ring combined structure sample, and clamping the two ends on a hydraulic tensile testing machine; starting the testing machine, loading the sample slowly and uniformly to obtain a yield load value F; stopping loading immediately after the sample is broken, obtaining the load value at this time which is the maximum load value F<max>; reading the extension length L of a yield stage on a force-extension graph; calculating the cementing strength between a cement stone and the parallel portion of a metal tensile rod, that is, the cementing strength of the cement first cementing surface. The method for testing the cementing strength of the cement first cementing surface of the oil well is reliable in principle, easy and convenient to operate, can simultaneously test the cementing strength and the tensile strength of the cement stone, optimizes the cement slurry formula, obtains a cement slurry system meeting on-site construction requirements, and has broad market application prospect.
Owner:SOUTHWEST PETROLEUM UNIV +2

Cathode of film-free air microbial fuel cell and manufacturing method thereof

The invention discloses a cathode of a film-free air microbial fuel cell and a manufacturing method thereof. The manufacturing method comprises the following steps: mixing conductive black with poly methyl phenmethyl siloxane serving as a diffusion layer material of a cathode in a mass ratio of 3: (10-13), evenly coating the mixture on one surface of a stainless steel mesh serving as a carrier of the cathode material, and drying for one hour; mixing a cell cathode catalyst with 5% of naphthol solution by based on a proportion of 1mg:(2-8)uL, processing with ultrasound for 30 minutes, evenly coating on the other surface of the stainless steel mesh, and drying for one hour; and cutting rubber into a gasket with the same size as a cell box cathode pressing plate, and fixing the rubber gasket with the cathode pressing plate to obtain the cathode. Through the invention, the manufactured cell cathode is simple in structure, low in cost and easy to realize industrialization, can be used for manufacturing the microbial fuel cell with high performance and low cost, and can acquire more considerable electric energy effectively in the process of waste water treatment.
Owner:SOUTH CHINA UNIV OF TECH

Preparation method and application of rare earth up-conversion drug-delivery nano-carrier

The invention relates to a preparation method and application of a rare earth up-conversion light-operated drug-delivery nano-carrier. The preparation method comprises the following steps: with a variety of rare earth salts as raw materials, preparing a rare earth up-conversion nanoparticle through a solvothermal process; synthesizing meso-porous silicon via a template process and carrying out coating; connecting a silane reagent to the surface of a meso-porous silicon shell layer; and finally, embedding a drug into meso pores. The nano-carrier prepared in the invention has a targeted aggregation effect and can realize precise positioning at a tumor site. The nano-carrier has a light-operated release effect; the drug is stored in the nano-carrier under the condition of no external near infrared laser (with wavelength of 980 nm) irradiation; the chemotherapy drug can only be released when a near infrared excitation source irradiates tumor tissue; thus, precise, timed and quantitative release of the nano-carrier at a tumor site can be realized. The nano-carrier has a fluorescence imaging function, can realize visualization of chemotherapy process and has the advantages of simple operation, good applicability, low cost and good dispersibility in water.
Owner:TIANJIN UNIV

Triple antigen and antibody complex for preventing and controlling porcine viral diarrhea and preparation method of triple antigen and antibody complex

The invention provides a triple antigen and antibody complex for preventing and controlling porcine viral diarrhea and a preparation method of the triple antigen and antibody complex. The triple antigen and antibody complex comprises an antigen and an antibody, wherein the antigen is a triple virus liquid obtained by mixing porcine transmissible gastroenteritis viruses, porcine epidemic diarrhea viruses and porcine rotavirus, and the antibody is a triple egg yolk antibody prepared on the basis of the antigen. The triple antigen and antibody complex for preventing and controlling porcine viral diarrhea is convenient and quick to use and capable of safely and effectively preventing and controlling the porcine viral diarrhea. The triple antigen and antibody complex can effectively reduce the body immunological stress response, increases the protection production speed, rapidly increases the body antibody titer and is prevented from the virus diffusion risk in production and use processes.
Owner:TIANJIN ZHONGSHENG TIAOZHAN BIOTECH

Recycled aggregate water-permeable brick and production method thereof

The invention provides a recycled aggregate water-permeable brick and a production method thereof. The recycled aggregate water-permeable brick comprises a base layer, and the base layer comprises, byweight, 95-105 parts of recycled aggregates, 14-16 parts of cement, 14-16 parts of fly ash and 0.22-0.32 part of a water reducer. The production method comprises the following steps: uniformly mixingthe cement, the fly ash and the water reducer, adding water, performing stirring, and adding wetted aggregates; adding the obtained mixture into a mold, and carrying out vibration extrusion molding under 1.5-3 MPa for 15-30 s; and demolding the obtained water-permeable brick, standing the water-permeable brick for 2 h, transferring the water-permeable brick into an autoclave, and curing the water-permeable brick under 0.8-1 MPa at 173-185 DEG C for 6-10 h. The aggregates are recycled aggregates, the use amount of the cement is small, the water-permeable brick has a high compressive strength and a high water permeability, the molding process is quick and simple, and has a low cost, and the environmental pollution can be effectively reduced, so the recycled aggregate water-permeable brick is suitable for large-scale industrial production.
Owner:QINGDAO AGRI UNIV

Antigen-antibody complex for preventing and/or treating avian influenza

The invention provides an antigen-antibody complex for preventing and / or treating avian influenza, which comprises inactivation avian influenza totiviruses which are used as antigen and an immune body thereof, and the mass concentration ratio of the antigen and the immune body is more than 1. After entering organisms to perform initial immunization, the antigen-antibody complex stimulates the organisms again to induce immunoreaction, and immune response is quick in speed and strong in reaction; the antigen-antibody complex used as a carrier is more favorable for capturing and presenting antigen presenting cells and can also strengthen a breeder reaction of T cells effectively; purified totiviruses used as the antigen increase the molecular weight of the complex, are more favorable for ingestion of immunocyte of the organisms on the antigen, cause the more extensive immunoreaction quickly, and have a significance for preventing avian influenza viruses of which the antigen is easy for variation. A preparation of the antigen-antibody complex does not need to use solid carriers, does not cause intense stimulus on the organisms or initiates the organisms to generate an adverse reaction, and is simple to prepare and safe and convenient to use.
Owner:INST OF ZOOLOGY CHINESE ACAD OF SCI

Polylactic acid-polyethylene glycol coated florfenicol nanofiber and preparation method thereof

The invention relates to polylactic acid-polyethylene glycol coated florfenicol nanofiber and a preparation method thereof, belonging to the technical fields of veterinary drugs and preparation thereof. The polylactic acid-polyethylene glycol is segmented copolymer D, L-polylactic acid-polyethylene glycol-D, L-polylactic acid; and florfenicol is filled in a reticular structure of polylactic acid-polyethylene glycol, and mass ratio of the florfenicol to the polylactic acid-polyethylene glycol is 1: (3.5-10). The preparation method comprises the steps of adding the polylactic acid-polyethylene glycol and the florfenicol into an organic solvent, stirring and dissolving to obtain a spinning solution; and then carrying out electrostatic spinning to obtain a polylactic acid-polyethylene glycol coated florfenicol nanofiber membrane. The preparation method provided by the invention realizes drug loading while carrying out electrostatic spinning on the polylactic acid-polyethylene glycol, and solves the problems such as sudden release of drugs, short action time and poor water solubility; and the adopted raw materials cannot cause the problem of environmental protection after degradation, the cost is low, the preparation process is simple and quick, and the polylactic acid-polyethylene glycol coated florfenicol nanofiber and the preparation method are applicable to mass production.
Owner:JILIN UNIV

Core-shell structured catalyst for preparation of cyclohexanol by selective hydrodeoxygenation of catalytic guaiacol

The invention discloses core-shell structured catalyst for preparation of cyclohexanol by selective hydrodeoxygenation of catalytic guaiacol. A preparing method of SiO2-clad Ni@SiO2 core-shell structured catalyst includes the steps of adding soluble nickel salt and polyvinylpyrrolidone to alcohol-water mixed solvent, performing mixing, dropwise adding ammonia water under stirring, adding cetyltrimethylammonium bromide as surfactant, dropwise adding soluble silicon source, and performing violent mixing; and performing filtering, collecting, washing, drying, calcining and reducing to obtain the Ni@SiO2 core-shell structured catalyst. In hydrodeoxygenation reaction of the guaiacol, the Ni@SiO2 core-shell structured catalyst prepared by the preparing method has high target product selectivity, good sintering resistance, carbon accumulation resistance and the like.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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