33results about How to "Clear route" patented technology

The invention discloses a self-adaptive anti-interference wireless transmission method for a band type network. The method includes the steps that when wireless sensor nodes have access to the network, short addresses are distributed by an aggregation node; the aggregation node broadcasts or request information to the wireless sensor nodes; the wireless sensor nodes judge whether they are within a routing radius range of a broadcasting issuing node; each wireless sensor node calculates a response slot time of its own and transmits a response in the response slot time; in the routing radius range, the nodes monitor a new routing node n to conduct broadcasting; the new routing node transmits data packet information to determine a latter route in the same broadcasting mode; the wireless sensor nodes judge whether they are destination addresses of a data packet link layer. The band type network can dynamically adjust the farthest transmission distance of the route according to the communication situation so as to adapt to external environmental inference; when the environmental interference is small, the information can be transmitted efficiently and quickly; when the environmental interference is large, the transmission distance is shortened.

The invention provides a preparation method of high purity trifluridine. The method is as below: reacting a raw material of a compound 2 with HMDS under the action of trimethylchlorosilane to obtain a compound 3; subjecting the compound 3 and a compound 4 to condensation in the presence of a catalyst copper difluoride; conducting ethanol recrystallization to obtain a compound 5; and finally conducting deprotection on the compound 5 under the effect of sodium methylate; and recrystallizing by a mixed solvent of ethanol and acetone (1:1) to obtain the high purity object compound 1. The method has the advantages of high purity of the product, simpleness, easy purification and less industrial pollution.

The invention provides a method for preparing high-purity Gadobutrol. The method comprises the following steps: taking cycleanine (I) as a starting material, firstly reacting with excess lithium chloride at high temperature to form a high-purity metal lithium complex (II), enabling the high-purity lithium complex (II) to react with 4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]octane (III) to generate an intermediate (IV), enabling the intermediate (IV) to react with chloroacetic acid and lithium hydroxide to synthesize an intermediate (V), salifying the intermediate (V) with gadolinium oxide to form a product (VI) namely a Gadobutrol crude product, and recrystallizing the crude product to prepare high-purity Gadobutrol. The method provided by the invention is simple in reaction process and clear in route, does not have redundant operation, ensures that the target compound is relatively high in purity and yield, can be used for greatly reducing the production of three wastes, and is easy to implement industrial application.

The invention discloses a technique for manufacturing high-performance printing paper. The technique comprises the steps of conducting defibrination or dissociation on bleached sulfate softwood pulp, mechanical pulp, bleached sulfate hardwood pulp, wet damage stuff and dry damage stuff, then conducting pulp mixing in a mixing pool, conducting mixing with white water in a machine chest, feeding the mixture into a flow box through a fan pump and a pressurized screen, and making the mixture pass through a net section, a pressing section, a front drying section, a sizing section, a rear drying section, a calendering section, a reeling section and a cutting section in sequence to obtain the high-performance printing paper. The technique is simple, clear, continuous and compact in process and suitable for large-scale production of a paper company. The obtained paper is high in stiffness and bulkiness and high in physical strength. Furthermore, due to the reasonable mixture of fibrous materials, the obtained paper is good in evenness, inking is even, color is full and bright, and imaging is clear. The technique can be used for printing colored leaflets and high-end books.

The invention discloses an environment-friendly modified polyurethane adhesive and belongs to the technical field of adhesives, and the environment-friendly modified polyurethane adhesive comprises the following components in parts by weight: 15-25 parts of polyester polyol, 2-4 parts of isocyanate, 30-80 parts of a solvent, 30-40 parts of a viscosity modifier, 0.01-0.03 part of a catalyst, 0.1-0.5 part of a chain extender, 0.2-0.5 part of a terminator and 0.2-0.5 part of a cellosolve. The invention also discloses a preparation method thereof. Different types of isocyanate are used, so that the application range of the environment-friendly modified polyurethane adhesive is improved; a controllable reaction process is provideed, poisonous and harmful three-benzene solvents (benzene, methylbenzene and xylene) are not used, the pollution is reduced, the controllability of production is improved, and meanwhile, the comprehensive cost of the product is reduced. The preparation method of theenvironment-friendly modified polyurethane adhesive is clear in route, mild in conditions, safe to operate, control and high in operability.

The invention discloses a nonylphenol polyoxyethylene ether dimeric surfactant using piperazine as a connecting group and a preparation method thereof. The structural formula of the substance is as the following right formula, wherein the addition mole number m is 4, 7, 10, 15, 20 or 30. The preparation method for the surfactant comprises the following steps: adding intermediate N-N'-di (2-hydroxy-5-nonylphenmethyl) piperazine and 1 percent of potassium hydroxide in percentage by mass of the intermediate into an autoclave, introducing oxacyclopropane of 2m according to the addition mole number m of the ethylene oxide group into the autoclave, heating the mixture to between 120 and 180 DEG C under stirring, reacting the mixture for 2 hours at a pressure of 1MPa, stopping reaction, cooling a reaction product, and taking the cooled reaction product out to obtain a product. The synthetic method has clear route, the synthesized product has an accurate structure, the crystallization degree of the intermediate is high, the product is easy to be separated, the generation of other byproducts is effectively avoided, and a novel dimeric nonylphenol polyoxyethylene ether surfactant is provided for the industry of fine chemicals.

The invention discloses a crossroad and T road all-directional no-parking flyover. The flyover comprises right turn roads and left turn flyovers of four directions of a crossroad, bidirectional straight flyovers and underground side pavements of four crossings. The straight road of one direction of the crossing point of the crossroad and the right turn are finished on the original roads respectively. The straight road of the other direction and the left turn are finished respectively through flyovers. The side pavements are underground passages at each crossing outside the crossing point of the crossroad. The T road comprises bidirectional straight roads, right turn roads, left turn flyovers and side pavements. The bidirectional straight roads and the right turn roads are finished on the original roads respectively. The left turns are finished through flyovers. The all-directional no-parking flyover can be built based on an existing bidirectional four-lane road which need not being widened. The structure is simple. Vehicles can pass directly in any direction. The route is clear. The T road can be built on bidirectional four lanes or above. Vehicles can go in any direction directly. The side pavements are arranged underground outside the crossing point of the crossroad respectively.

The invention discloses a treatment method of steel component hot-galvanizing waste water. The treatment method of steel component hot-galvanizing waste water comprises the following steps of firstlyrespectively performing pre-filtering and impurity removal on alkali washing degreasing liquid, acid washing liquid and rinsing liquid; then, performing mixing; next, regulating the PH value to alkaline condition for separating ferric hydroxide precipitates; next, regulating plating assistant waste liquid containing rich zinc ions and ammonium ions to be similar to the neutral state; removing thezinc ions; next, mixing the two solutions; adding the two solutions into a biochemical filter pool; removing nitrogen elements and other harmful substances in the system through denitrification and nitrification reactions; next, taking precipitates; performing impurity removal to obtain clear liquid to be used for producing rinsing water or workshop cleaning water. According to the invention, by using the mode, the degreasing waste liquid, acid washing waste liquid and plating assistant waste liquid in the hot-galvanizing process can be treated at the same time; the drug dosage in the waste liquid treatment is reduced; the goals of realizing the repeated utilization of water resources, saving the resources, protecting the environment and lowering the operation cost are achieved.

The invention discloses a nonylphenol polyoxyethylene ether nonionic surfactant and a preparation method thereof. The structural formula of the substance is as the following right formula, wherein the addition mole number m is 4, 7, 10, 15, 20 or 30. The preparation method for the surfactant comprises the following steps: adding intermediate 2,6-di{N-[N'-(2-hydroxy-5-nonylphenmethyl)piperazinyl] methyl}-4-nonylphenol and 1 percent of potassium hydroxide in percentage by mass of the intermediate into an autoclave, introducing oxacyclopropane of 3m according to the addition mole number m of the ethylene oxide group into the autoclave, heating the mixture to between 120 and 180 DEG C under stirring, reacting the mixture for 2 hours at a pressure of 1MPa, stopping reaction, and cooling a reaction product to obtain a product. The synthetic method has clear route, the synthesized product has an accurate structure, the crystallization degree of the intermediate is high, the product is easy to be separated, the generation of other byproducts is effectively avoided, and a novel trimeric nonylphenol polyoxyethylene ether surfactant is provided for the industry of fine chemicals.

The invention discloses a Bacillus subtilis engineering bacteria for efficiently expressing plasmin and a preparation method thereof. An existing Bacillus subtilis strain is transformed by gene knocking technology to obtain the Bacillus subtilis engineering bacteria for efficiently expressing the plasmin. The method is clear in route, simple and effective, can be applied to a variety of Bacillus subtilis, and has good practicability.

The invention discloses a multifunctional household information box. The information box has an information box body formed by a metal box bottom and a plastic box frame. The lower left side of the bottom of the box body is provided with a cable and fiber winding area, the upper left side of the bottom is provided with a cable access area, the lower right side of the bottom is provided with an ONU device mounting area, and the upper left side of the bottom is provided with a socket module mounting area. The cable and fiber winding area includes a binding seat. Binding posts are arranged in the cable access area. ONU binding positions are disposed in the ONU device mounting area. ONU devices manufactured by different manufacturers and different in specification and dimension can be mounted. A three-station five-hole lightning protection socket is installed in the socket module mounting area to prevent thunder from damaging electric equipment. On the basis of optimization of a conventional household information box, the space layout of the information box is reasonable, and the wire inlet and outlet mode of the box body is optimized through the modularized design of a dual-layer structure. Therefore, the box body is compact in structure and small in size, and is practical and nice-looking.

The invention relates to a video backup device, method and system and electronic equipment. The video backup method comprises the following steps of: processing video data sent by each video input acquisition board card or a total backup video management unit respectively; decoding, segmenting, inserting, integrating and/or recoding the received video according to the code of the coding module inthe video input acquisition board card; scoring the video format, the frame frequency, the resolution and the load input by each acquisition board card; performing judging on the basis of the score, determining the backup route and the backup mode of the video according to the judgment, and backing up the video; and outputting the signals to an LED display screen through a gigabit network port ora 10-gigabit optical fiber port. The video backup device, method and system and electronic equipment have the advantages of multiple backup methods, the high video backup speed, saving of disk space required by video backup, high backup efficiency, more timely backup video output, clearer backup video routing and suitability for video backup of large LED display screen control equipment.

The invention discloses a hydrophilic negatively-charged porous nano-film for repairing chronic kidney diseases as well as a preparation method and application of the hydrophilic negatively-charged porous nano-film. According to the method, cane sugar and L-lactide are taken as reactants, a terminal-carboxylated 8-arm star-shaped polylactic acid element is synthesized, and the negative-electricity porous nano-film with the pore diameter of 23.5 +/-4.5 nm is prepared from the element through self-assembly; the surface of the film is successfully modified with polyethylene glycol (PEG) and a glomerular specific antibody (Ab) in sequence by utilizing an amide reaction between carboxyl and amino, so that the film has good hydrophilicity and kidney targeting property; the pore diameter of the hydrophilic negative-electricity porous nano-film for repairing the chronic kidney disease is 19-28 nm. The hydrophilic negatively-charged porous nano-film prepared by the invention can simulate a filtration barrier of glomerulus and directly repair a damaged glomerulus filtration film of a rat, so that the effect of treating chronic kidney disease is achieved.

The invention discloses a fiber coiling and partitioning device and an optical fiber laying splicing box. The fiber coiling and partitioning device comprises at least one set of fiber coiling and partitioning component. The fiber coiling and partitioning component comprises a first separating plate, a second separating plate and a third separating plate which are arranged in a spacing way in turn. A first fiber coiling partition is formed in the spacing area between the first separating plate and the second separating plate. A second fiber coiling partition isolated from the first fiber coiling partition is formed in the spacing area between the second separating plate and the third separating plate. The fiber coiling and partitioning device is used for separately storing the optical fibers of different purposes so that operation of work personnel is facilitated, optical fiber wiring routing is clear and management is facilitated.

The invention belongs to the technical field of synthesis, and particularly relates to a synthesis method of Laingolide A and a diastereoisomer thereof, which comprises the following steps: preparinga compound 8 or ent-8; preparing a compound 15 or 18; carrying out Julia olefination reaction on the compound 8 or ent-8 and a compound 15 or 18 to obtain a compound A; carrying out reductive hydrogenation treatment on the compound A to obtain a compound B; carrying out oxidation treatment on the compound B to obtain a compound C; carrying out amido bond assembly on the compound C and then carrying out esterification reaction to obtain a compound D; and carrying out olefin metathesis reaction on the compound D, and then carrying out olefin isomerization reaction to obtain the Laingolide A or the diastereoisomer thereof. The synthesis method provided by the embodiment of the invention is clear in route and high in synthesis efficiency, and is beneficial to the research on the biological activity of the Laingolide A and the diastereoisomer.