72 results about "Degree of reaction" patented technology

The invention discloses a synthesis process for 2-acrylamido-2-methyl propane sulfonic acid through a continuous method. The synthesis process comprises the following steps of: continuously and uniformly mixing acrylonitrile and fuming sulfuric acid at the temperature of 10-12 DEG C; performing first order reaction and second order reaction at the temperature of 20-45 DEG C under a condition of introducing vaporized isobutene; and slaking, centrifuging and drying to continuously produce the 2-acrylamido-2-methyl propane sulfonic acid product. By designing unique first order reaction, second order reaction and slaking flow, completeness degree of reaction of the material is guaranteed, the product yield and the quality stability are improved, and the reaction period is greatly shortened. The synthesis process has the advantages of scientific and rational flow design, practicability, product yield of over 96 percent and liquid phase detection purity of over 96 percent.

A method for preparing n-3PUFA marine glyceride through adopting enzyme method includes following steps: refined fish oil is made into n-3PUFA condensate through saponification, acidification and urea adduct method; lipase catalyzes the synthesis reaction between n-3PUFA and glycerol; n-3PUFA marine glyceride is extracted and separated; moreover, n-3PUFA is effectively concentrated in glyceride to be made into functional products which can prevent and cure cardiovascular diseases and nourish the brain and improve intelligence. The raw material of the invention, n-3PUFA, is extracted from natural fish oil, thereby being safe and effective; during production, nitrogen protection is adopted without adding synthetic antioxidant, thereby effectively preventing oxidation of n-3PUFA; with scientific and reasonable technique, the invention completes synthesis by means of biological enzyme method along with high esterification degree of reaction, higher utilization rate of raw material and easily controlled reaction process; therefore, the invention has wide market prospect.

A nanoporous catalytic membrane which displays several unique features including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity.

A nanoporous catalytic membrane which displays several unique features Including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity. Also provided is a method for producing a catalytic membrane having flow-through pores and discreet catalytic clusters adhering to the inside surfaces of the pores.

The invention discloses electrolyte of a lithium ion battery. The electrolyte comprises lithium salt, an anhydrous organic solvent and an adding agent, wherein the adding agent contains fluoroethylene carbonate being 0.5-9 percent of the total mass of the electrolyte, nitrile compounds being 1-8 percent of the total mass of the electrolyte and o-benzoyl sulfonyl imide salt being 0.3-5 percent of the total mass of the electrolyte, and the o-benzoyl sulfonyl imide salt has a structural formula as shown in the specification, wherein M is alkali metal, and R1, R2, R3 and R4 are respectively hydrogen or alkyl group or alkyl halide group. In the electrolyte of the lithium ion battery, the o-benzoyl sulfonyl imide salt can overcome a destructive effect of FEC anodic film by-products on cathode; the nitrile compounds are combined with the cathode in a coordination mode, the degree of reaction of the o-benzoyl sulfonyl imide salt and a cathode material is reduced, the o-benzoyl sulfonyl imide salt forms a film at cathode to protect cathode, and the impedance on the cathode is seldom increased; the high-temperature storage performance is improved, and meanwhile the multiplying power and the cycle performance can be kept at an acceptable level.

An allergy testing system includes encapsulated allergens, a microneedle array, and an activation system coupled to the microneedle array and the encapsulated allergens such that the encapsulated allergens are moved into contact with a subject as the microneedle array is moved from a resting position to a penetrating position. A method for determining a degree of reaction to one or more allergens by a patient in a minimally invasive manner is also disclosed. Penetration of one or more microneedles into a skin of the patient is caused. Each of the penetrations into the skin is exposed with an allergen from each of the one or more microneedles. One or more images are captured of each of the penetrations into the skin. Each of the captured images are analyzed to assess the degree of reaction to the specific allergen. Allergic reactivity data is output for at least one of the allergens.

After reaction between bovine serum albumin (bsa) on magnetic particles and biotin label of thyroxin, superfluous biotin reagent in mixed liquor and n-hydroxyl succimide ester generates compound of magnetic particle-bsa-biotin. Under action of external magnetic field, superfluous biotin reagent is removed. Degree of reaction between n-hydroxyl succimide ester and magnetic particles is tested by enzyme immunoassay method. It is determined that final obtained solution is high-purified thyroxin labeled by biotin. Advantages of the invention are simple, quick and high efficiency. The invention is also applicable for separating and purifying biomoleculars of protein, polypeptide, oligonucleotide etc. labeled by biotin.

Heating cords, foils or tapes are first manufactured by cold drawing individual round wires of constituent materials in a blanketed gas environment. This cold drawing operation produces a clean surface free of oxides and other contamination. Second, the constituent strands are brought together and twisted, cold drawn, swaged, and/or friction welded to produce an integral rope in which the constituent materials are in intimate contact. The integral rope can then be applied directly or further shaped into a shape and/or thickness. By controlling the dimensional ratios of the component cross-sections, the degree of controllability of the exothermic reaction characteristics can be tuned. Once the integral rope is formed, it can be coated with a layer of brazing and/or molten material to facilitate subsequent operations. Multiple strands may be woven together to form a cloth structure. The heat release device may be used in the field of permanently joining gaskets to opposing surfaces, such as attaching a cylinder head to a cylinder block in the operating position.

The invention discloses a turbine stator and rotor assembly, which belongs to petroleum drilling industries and aims to solve the problems of low turbine-stage efficiency and short service life of a turbine drill due to higher viscosity of the conventional drilling fluid. Each rotor blade disc is provided with a stator blade disc, the rotor blade disc and the stator blade disc form a stage, and the reaction degree of the stage is less than 0.5; a plurality of stages are sleeve on a shaft sequentially from top to bottom and are in compression fit with one another through end surfaces; a shell is sleeved on the outer parts of the plurality of stages; molded lines of a rotor blade and a stator blade are constructed a spline curve; the spline curve of the rotor blade has a shape of an arc with a rightward opening; the spline curve of the stator blade has a shape of an arc with a leftward opening; and both the rotor blade and the stator blade are made of ZG20CrMnSiNi2. The turbine stator and rotor assembly is suitable for petroleum drilling.

The invention relates to a preparation method of a high-expansion liquid absorption sponge, which belongs to the field of preparation of biomedical materials. The preparation method comprises the following steps of: mixing two polyvinyl formal reaction solutions with different degrees of reaction, then reacting continuously and performing pouring, curing, demolding, cleaning and other steps for getting a final product. According to the preparation method disclosed by the invention, polyvinyl formal with higher depth of pre-reaction is utilized for making a hole-forming core so as to prepare a sponge material, and the material has the characteristics of regular hole structure, no residue of foreign matters, soft texture, immediate expansion when the material meets with water and the like, and is suitable for surgical hematophagia, liquid absorption and other purposes in the medical field.

The invention relates to a preparation method of a boron magnesium prealloy powder material, and belongs to the field of metal based combustible matter. The boron magnesium prealloy powder material isof a totally encapsulated type core-shell structure; B is taken as the core; the shell is composed of MgO and MgB2; amorphous form MgO and crystalline state MgB2 are nonuniformly distributed. The preparation method comprises following steps: magnesium powder and boron powder are subjected to pretreatment and mechanical premixing so as to obtain a mixed powder, the mixed powder is subjected to high temperature uniform pre-mixing, is taken out from a furnace, is smashed and grinded under the protection of an inert gas, and then is introduced into the furnace again; vacuuming is carried out, inert gas is introduced, and two-step sintering is carried out; an obtained prealloy powder block is subjected to mechanical smashing grinding under the protection of inert gas so as to obtain the boronmagnesium prealloy powder material. The preparation method is simple; cost is low; reduction of boron oxide in boron powder is realized with magnesium powder in heating process so as to increase the content of effective boron; a part of boron magnesium alloy is formed on interfaces among boron particles, so that boron agglomeration is reduced, heating area of boron particles in oxidation process is enlarged, and the degree of reaction is increased.

The invention discloses a preparation method and polymerization equipment of acrylonitrile base carbon fiber spinning solution. The preparation method is characterized in that solution polymerization is carried out in the polymerization equipment; the polymerization equipment comprises a reaction kettle and a reactive extruder; and the reaction kettle and the reactive extruder are connected with each other and are respectively provided with a temperature regulating device. The invention has the following benefits: the reaction kettle is connected with the reactive extruder; the screw extrusion structure of the reactive extruder can introduce the reaction media and the chemical reaction in the process of extrusion and has the functions of the synthesis reactors besides the function of mixing materials of the traditional extruders; the reactive extruder can further process high viscosity materials and continuously and quickly generate new and thin material surface layers, thus increasing the surface volume ratio of the materials; and the reaction media are uniformly distributed in the materials and the degree of reaction is improved.

Provided are a substrate for analyzing the coverage of self-assembled molecules and a method for analyzing the coverage of the self-assembled molecules in nanowire and nanochannel patterned on solid surface, solid surface, or bulk solid surface by using the nanoparticles. According to the method, the presence of specific functional groups of self-assembled molecules and the degree of reaction can be analyzed by introducing nanoparticles to a biomaterial immobilization substrate including self-assembled molecules and measuring the number of gold nanoparticles existing on the surface. The substrate for analyzing the coverage of self-assembled molecules includes: a biomaterial immobilization substrate; a self-assembled molecular layer formed on the substrate and having a functional group capable of reacting with an amine group; a capture DNA molecule having an amine group bounded to the self-assembled molecular layer; and a probe DNA molecule bound to the capture DNA molecule and having nanoparticles attached to on the surface.

The invention aims to provide a multistage axial flow compressor aerodynamic design method based on key dimensionless load control parameters, which comprises the following steps of: repeatedly iterating links such as one-dimensional inverse problem design and characteristic analysis, S2 inverse problem design, blade modeling design, three-dimensional CFD analysis and the like; and obtaining a multi-stage axial flow compressor aerodynamic design scheme meeting design index requirements. Customized design of the internal load of the multi-stage axial flow compressor is achieved through three dimensionless parameters including the flow coefficient, the load coefficient and the reactivity, and the problem of space load matching between design points and low working conditions in pneumatic design of the multi-stage axial flow compressor is effectively solved; and the pneumatic design of the multistage axial flow compressor achieves the parameterization and refinement degree, the design precision is improved, and the design period is shortened. Meanwhile, the method is not limited to a multi-stage axial flow compressor of a gas turbine, but also suitable for the pneumatic design process of various industrial axial flow compressors and aero-engine axial flow compressors/fans.

A method for continuously preparing the carbon coated Fe3O4 composite material by using a micro-reactor coupled spray pyrolysis reactor, Fe3O4 powders are dispersed and coated evenly in the carbon material. Compared with the prior art, the method has the advantages of short reaction time, low cost, high controllable degree of reaction process, simple and convenient to adjust preparation condition, continuous preparation, small particle size of Fe3O4, narrow distribution, and good particle dispersibility.

The invention discloses an anti-Mullerian hormone quantitatively detecting method and relates to the technical field of biological detection. The anti-Mullerian hormone quantitatively detecting methodachieves quantitative detection through three-step double-antibody sandwich enzyme immunoassay, and combining biotin-antibodies with solid matrix antibody-antigen compounds and then with streptavidin-horseradish peroxidase conjugates to accordingly combine antibody-antigen-antibody biotin compound-SHRP (streptavidin-horseradish peroxidase) onto micropores for enzyme-substrate chromogenic reaction; measuring the degree of reaction between enzymes and substrate through dual-wavelength chromatography with a main wavelength of 450 nm and a reference wavelength of 620/630 nm to obtain absorbance value, and then calculating the concentration of AMH (anti-Mullerian hormone) of a sample to be detected according to a standard curve equation. The anti-Mullerian hormone quantitatively detecting method is concise in process, simple in operation, convenient to use and capable of accurately detecting the AMH concentration and achieving quantitative analysis on detecting results.