114results about How to "The modification method is simple" patented technology

The invention discloses a preparation method of localized surface plasmon resonance (LSPR) microfluidic chip. The preparation method includes preparation of microfluidic chip, and chip modification. The preparation method has the advantages of easily-available materials, low cost, repeatable use, simple modification method, good reproducibility and good stability, can be directly used for rapid detection of various biological samples, and has potential wide application in life sciences and medical clinical detection.

The invention provides an electrochemical sensor detection method of trac heavy metal ions, and relates to a sulfydryl functionalized graphene modified glassy carbon electrode, and preparation and application of the electrode, and belongs to the technical field of heavy metal detection and electrochemical analysis. The method specifically comprises the following steps: modifying sulfydryl functionalized graphene on the surface of the glassy carbon electrode so as to manufacture a sensor, and detecting the trace heavy metal ions by using an electrochemical differential pulse stripping voltammetry method. The method can be directly applied to rapid electrochemical detection on the heavy metal ions, and has the advantages of high sensitivity, wide linearity range, low detection limit and the like.

The invention discloses a method for surface-modifying polyurethane by using a zwitterionic polymer and modified polyurethane. The method comprises the following steps: (1), reacting a polyurethane film with diisocyanate and then reacting with L-cysteine or sulfhydryl fatty alcohole; (2), dropwise adding a sulphobetaine-containing norbornene polymer and a photoinitiator into a product obtained in the step (1), and preparing the zwitterionic polymer-modified polyurethane by virtue of a click reation. Experiments prove that the polyurethane modified according to the method for surface-modifying the polyurethane by using the zwitterionic polymer, disclosed by the invention, is high in surface hydrophilicity, resists platelet adsorption, is low in cytotoxicity, is beneficial to endotheliaal cell adhesion and proliferation, and has better blood compatibility and biocompatibility. The modification method disclosed by the invention is simple.

The invention relates to the biotechnical field, and concretely relates to an HSV1-H129-BAC and a mutant thereof. The above virus and the mutant thereof carry a bacterial artificial chromosome (BAC), can keep low-copy number self-replication in specific bacteria, and solve the disadvantages of unable long-term preservation, unable self-replication and inconvenient molecular biologic mutation reconstruction due to too large herpes virus genomes. The virus and the mutant thereof also carry a GFP reporter gene, and substantially develop the application prospect of the herpes virus as a tool virus. The invention also provides a construction method of the H129-BAC and the mutant thereof. The method allows H129 to be reconstructed in order to obtain H129-BAC and endows the H129-BAC with more mutant types; and the construction method, the H129 and the mutant thereof form a genetic modification platform with high application possibility.

The invention relates to a method for changing number of tube passes of a tube type heat exchanger. As for traditional methods, an entire heat exchanger or a tube bundle and a tube box is/are replaced, the changing workload is high, and the costs are high. The method includes changing a tube plate and the tube box, the changing workload is low, and the costs are low. A groove or a protruded rib is arranged on the tube plate of the tube bundle of the heat exchanger, the groove or the protruded rib is required to be partially or totally filled, and a novel groove or a novel protruded rib is added. The structure of the tube box is required to be changed in two aspects that a partition board on the inner side is changed, existing partition boards are required to be partially or totally removed, and novel partition boards can be added according to requirements as well; and a position of a tube nozzle on the outer side is changed. By means of the method for changing the heat exchanger, the number of tube passes of the heat exchanger can be changed, the tube bundle of the heat exchanger or the entire heat exchanger is not required to be replaced, and changing costs and construction workload can be substantially reduced.

The invention relates to a cycloidal gear tooth profile modification method based on the logarithm, a cycloidal gear and an RV reducer and belongs to the technical field of cycloidal gear machining. The modification quantity in a logarithmic relationship with the cycloidal gear tooth profile generating line is superposed on a tooth profile curve of the standard cycloidal gear, the modification quantities of all position points of the cycloidal gear tooth profile can be adjusted by changing the modification coefficient, the logarithmic base and the logarithmic power, and further the curve shapeof the modification function and the modification quantities of all the position points of the cycloidal gear tooth profile can be controlled. The modification method is simple and easy to implement,the main working segment tooth profile, engaged with a pin gear, of the modified cycloidal gear is closer to the standard cycloidal gear tooth profile, certain engagement radial gaps exist between the non-main engagement segments close to the tooth tops and the tooth roots, manufacturing and mounting errors are compensated advantageously, storage of lubricating oil is facilitated, and the transmission property and the engagement quality of the cycloidal gear can be improved.

The invention discloses an in-situ passivation repairing agent of cadmium-arsenic combined pollution farmland soil, a preparation method and an application, and belongs to the technical field of the farmland soil heavy metal pollution repairing. A proportion of ground phosphate rock and steel slag is 1:4-1:1. Exchangeable form Cd content can be reduced to 26.76%-29.54%, and residual form Cd content is improved to 90.52%-113.75%. Exchangeable form As content is reduced by 29.41% maximally, and residual form As content is improved by 16.82%. Raw materials of the ground phosphate rock and the steel slag of the agent are cheap and easily obtained. A modification treatment method is simple, and environment-friendly. The agent can be used as a phosphatic fertilizer and a composite mineral fertilizer in agricultural production, and is capable of improving nutrient conditions of the farmland soil while used as a repairing agent. Compared with a process of independently adding the steel slag and the ground phosphate rock, the ground phosphate rock is capable of reinforcing capacity of exchangeable form cadmium reduced by the steel slag, and the steel slag is capable of remedying a defect ofthe ground phosphate rock that passivation capability to arsenic is poor, the repairing effect is improved, and a risk of farmland crops is reduced in the greater degree.

The invention discloses a modification processing method for converter gas quenched steel slag stability. The method includes: fine grinding a limestone modifier and gas quenched steel slag, mixing, remelting to 1000-1150 DEG C, and incubating for 0.5-1.5 hours to conduct modification processing. The present invention also discloses a limestone as a stability modifier for the converter gas quenched steel slag. The modifier is a limestone. The main ingredients of the limestone include 47.63% of SiO2, 33.28% of CaO, and other ingredients like 3.52% of Fe2O3 and 1.82% of MgO. The steel slag stability modifier used in the invention is wide in raw material sources, low in cost, simple in the steel slag modification method, safe and reliable. In the modified steel slag, the content of F-CaO can be reduced to 0.012%-0.058%, therefore the security application scope of the steel slag is expanded.

The invention discloses a vehicle-mounted short-distance communication network based quickly-converged ant colony routing establishment method. The establishment method comprises the following steps that nodes receive heartbeat information of surrounding nodes and determine distances and running directions of the surrounding nodes according to the heartbeat information; selection bands are determined from source nodes to destination nodes step by step; numbering the selection bands and nodes in the selection bands; information elements of source nodes and middle nodes are initialized according to the numbers; an improved ant colony algorithm is utilized to establish routing; optimal sending power are allocated to the source nodes and the middle nodes. The vehicle-mounted short-distance communication network based quickly-converged ant colony routing establishment method fully utilizes characteristics of a V2X network to improve the ant colony algorithm, invalid walking of artificial ants is decreased, convergence speed of the ant colony algorithm is greatly improved, and the routing establishment method adapts to the V2X network.

The invention discloses a self-relieving non-return-oil oil atomizer which is formed by refitting a traditional mechanical oil atomizer. The self-relieving non-return-oil oil atomizer is characterized in that a tiny metering hole is arranged in the traditional mechanical oil atomizer, the tiny metering hole is communicated with a low-pressure oil return side spring cavity and a high-pressure working side oil containing groove; a valve is arranged and is a check valve, two sides of the check valve are provided with a low-pressure oil return side and a high-pressure working side respectively, and the tiny metering hole enables fuel oil to flow in the direction from the low-pressure oil return side to the high-pressure working side; a blocking plug is utilized to block an oil return opening matched with the valve to enable the tiny metering hole and the valve to have the one-direction flowing function. Or the self-relieving non-return-oil oil atomizer is directly formed according to the technical scheme, the mechanical oil atomizer has a non-return-oil function and can relieve pressure automatically, an oil return pipeline device is achieved, and the oil atomizer can stably and reliably operate.

The invention provides a transformed buried oil storage tank and a transforming method thereof. The oil storage tank is provided with a steel tank body. A bottom layer, which is formed by laminating fiber cloth, spraying resin and curing the resin, is arranged on the inner wall of the tank body. A middle layer is arranged on the inner wall of the bottom layer. The middle layer adopts a hollow structure, which is formed by compounding 3-D spacer fabrics, woven integrally from glass fiber, through resin. The surface layer, which is formed by laminating fiber cloth, spraying resin, and curing the resin, is arranged on the inner wall of the middle layer. The surface protection layer made of electrostatic resin is arranged on the inner wall of the surface layer. The transforming method comprises the following specific steps of S1, clearing the oil storage tank; S2, spraying bonding resin; S3, preparing the bottom layer of the oil storage tank; S4, preparing the middle layer of the oil storage tank; S5, preparing the surface layer of the oil storage tank; S6, preparing the protection layer on the surface of the oil storage tank; and S7, mounting a leakage detection system. The oil storage tank has high corrosion resistance and wear resistance, and the service life is long; and the transforming method is simple and flexible, and the service life of the oil storage tank is prolonged.

The invention relates to a poultry house with variable cross sections, which comprises a front end gable, a rear end gable, a side wall and a ceiling, wherein the front end gable is provided with a ventilation window; the ventilation window is provided with a wet curtain; a fan is arranged on the rear end gable; the side wall is provided with a side window; the poultry house is internally providedwith poultry cages; the long axis of the poultry house variable cross sections is perpendicular to the front end gable, the front end gable is parallel to the rear end gable, the poultry cages are arranged in columns parallel to the long axis, and the longitudinal section areas of the poultry house with variable cross sections, parallel to the front end gable, is gradually reduced along the direction from the front end to the rear end of the poultry house. The invention also relates to a poultry house group consisting of a plurality of poultry houses with variable cross sections, a method fordesigning the poultry house with variable sections, and a method for reconstructing a poultry house with a constant cross section. According to the poultry house with variable sections, the internaltemperature difference of the poultry house is small, the heat of the poultries at the front and rear ends of the poultry house is exchanged uniformly, and the total energy consumption of the poultryhouse for temperature controlling and heat exchanging is low; the poultry house group is compact in arrangement and small in occupied area; the design method and the reconstruction method are simple and convenient, low in cost, and can obtain the poultry house with uniform internal heat exchange and low energy consumption.

Metallofullerene derivatives, a preparing method thereof and an energy storage and conversion method of the derivatives are disclosed. The derivatives are obtained by modifying the surface of metallofullerene with derivatives of a nitroxide free radical micromolecule that is 2,2,6,6-tetramethylpiperidinooxy through an addition reaction. The metallofullerene derivatives are radiated by adopting ultraviolet light, and then participate catalytic oxidation reactions, the energy storage rate and energy conversion rate are high, storage of ultraviolet light energy and conversion from the light energy to chemical energy are achieved, and the energy storage and conversion method and process are simple. An electron transfer process of the metallofullerene derivatives radiated by the ultraviolet light can be analyzed by a conventional test instrument, the electron transfer situation can be reflected by changes of electron paramagnetic signals, and sensitivity is high. The time scale in the electron transfer process can be detected as an expansion.

The invention relates to the technical field of nuclear power station primary loop main pumps. The invention discloses leakage abnormity processing system and method for a main pump of a nuclear powerstation. The system comprises a main controller, a nuclear power station main pump and a liquid collection tank, wherein the nuclear power station main pump comprises a second shaft seal and includesa leakage pipeline which is used for connecting the second shaft seal with the liquid collecting tank; an impurity isolation valve is arranged on the side, close to the second shaft seal, of the leakage pipeline. At least one water filling isolation valve is arranged on the leakage pipeline between the impurity isolation valve and the liquid collection tank; the liquid collecting tank is providedwith a water supplementing isolating valve used for controlling reverse water filling and exhausting, and the main controller is used for controlling the water supplementing isolating valve and at least one water filling isolating valve to be opened when the impurity isolating valve is closed, so that reverse water filling and exhausting can be conducted on the leakage pipeline through the liquidcollecting tank. According to the system, the liquid collection tank can be used for fully and reversely filling water into the leakage pipeline for exhausting, and meanwhile, impurities in the liquid collection tank can be isolated through the impurity isolation valve.

The invention relates to an electrode bimetal modification method. An electrode made in the invention is used for an electrolytic oxidation reaction of alcohol. The method comprises the following steps: preparing a gold precursor solution, preparing a platinum precursor solution, carrying out electrode surface modification, and using the electrode in the electrocatalytic oxidation reaction of ethanol. The electrode modification method is simple, the electrode is stable, the Pd electrode obtained after the modification of an extremely low amount of Au and Pt has a far higher electrocatalytic activity in the ethanol oxidation reaction in an alkaline solution than a Au, Pt and Pd electrode, a Au modified Pd electrode and a Pt modified Pd electrode; the modification amount of Au and Pt is extremely low, so the application amount of Au and Pt is saved; and the electrode made in the invention has a very high catalytic activity in the ethanol oxidation reaction in an alkaline medium, and has a very obvious modification effect.

The invention provides a method for preparing composite heat-conducting silicone grease from carbon nitride modified carbon nanotubes. A nitrogen-rich compound is adopted as a carbon nitride precursor, carbon nitride grows on the surface of a carbon nanotube in situ through a thermal polycondensation method, a carbon nitride modified carbon nanotube is prepared, and then the carbon nitride modified carbon nanotube is mixed with other heat-conducting filler and silicone oil to prepare the heat-conducting silicone grease. The modification of the carbon nitride can enhance the interface performance of the carbon nanotubes, improve the dispersity and addition amount of the carbon nanotubes in the silicone oil, and facilitate the formation of a heat-conducting passage in the heat-conducting silicone grease, thereby improving the heat-conducting capability of the heat-conducting silicone grease. On the other hand, the carbon nitride is used as an insulating material, so that the increase of the conductivity of the heat-conducting silicone grease caused by the carbon nanotubes can be remarkably reduced, and the preparation of the high-heat-conductivity and high-insulation heat-conducting silicone grease is facilitated. The method for modifying the carbon nanotubes by using the carbon nitride is simple and effective, low in cost and beneficial to industrialization.

The invention discloses a modification method for basic magnesium sulfate whiskers. The modification method comprises the following steps: adopting deionized water and absolute ethyl alcohol to prepare KH-570 hydroalcoholic solution; regulating the pH (Potential of Hydrogen) of the hydroalcoholic solution by acetic anhydride, and carrying out sealing stirring hydrolysis and room-temperature standing; after the whiskers are added, carrying out stirring reaction, drying and high-temperature activation under a sealing condition. The modification method for the basic magnesium sulfate whiskers isvery simple, a great quantity of toxic or organic solvent does not need to be used, so that environment pollution is not basically caused, a modification effect is good, the modified basic magnesium sulfate whisker have good hydrophobicity, the hydrophobicity is obviously improved, and therefore, the modification method has a wide application prospect.