42results about How to "Has commercial potential" patented technology

The invention provides a method of improving buried resistance printed wire board resistance precision. The method of improving the buried resistance printed wire board resistance precision comprises the following steps: (1) supplying a board with a buried resistance layer, wherein the board with a buried resistance layer comprising an insulating medium layer, the buried resistance layer and a copper foil layer, (2) attaching a first light resistance film, proceeding a first time exposure, printing a circuit figure of a negative film on the first light resistance film, proceeding a first time develop, the circuit figure comprising a resistance circuit and a normal circuit, increasing 6 mil to a long side unilateral of circuit width of the resistance circuit, and increasing 1.25 mil to a broadside unilateral of circuit width of the resistance circuit, (3) proceeding a first time etching and a second time etching, (4) attaching a second light resistance film, proceeding a second time exposure, printing a circuit figure of a positive film on the second light resistance film, proceeding a second time develop, reducing 0.6 mil to a long side unilateral of circuit width of the resistance figure, and increasing 6 mil to a broadside unilateral of circuit width of the resistance figure, (5) proceeding a third time etching, and (6) proceeding brown oxide processing, controlling micro etching amount between 1.3-1.7um,proceeding a -17% extra compensation to the resistance figure of the positive film.

The invention discloses an ATRP method for constructing a series of low-toxicity and high-efficiency cationic gene vectors with PGMA (polyglyceryl methacrylate) as a skeleton in the technical field of the non-viral gene vectors. The ATRP method is smooth in polymerization reaction and easy to control; according to the ATRP method, a variety of high-performance cationic gene vectors with different molecular weights and narrow molecular weight distribution can be prepared as required; and the prepared cationic gene vectors are good in storage stability, have a transfection efficiency higher than the gold standard PEI in Hepg2, C6, Cos7, HEK293 and other cells, are easy to use and have a commercial potential.

The invention discloses a method for preparing a symmetrical disulfide compound. In the method, a compound shown as a formula (III) is taken as a raw material, and a CoSalen complex shown as a formula (I) or (II) is taken as a catalyst; and the method comprises the following steps of: in an organic solvent, introducing air or oxygen serving as an oxidant, reacting at the temperature of between 20 and 100 DEG C, tracking and monitoring until the reaction is completed, and after the reaction is finished, performing after treatment on reacting fluid to prepare the symmetrical disulfide compound shown as a formula (IV). Compared with the prior art, the method for preparing the symmetrical disulfide compound has the advantages of simple and convenient operation, mild reaction condition, low cost, easy preparation and small dosage of the adopted catalyst, low cost, easy acquirement and cleanness of the adopted oxidant gas, low content of the impurity of disulfide as the finished product, higher yield, commercial prospect and remarkable application value and social and economic benefits.

The invention relates to a solid oxide fuel cell based on a semiconductor junction effect and a preparation method of the solid oxide fuel cell. The solid oxide fuel cell structurally comprises a cathode, an anode and current collectors, wherein the current collectors are arranged on outer sides of the cathode and the anode. The solid oxide fuel cell is characterized in that the cathode is a proton / oxygen ion conductor material with properties of an n-type semiconductor, the anode is a proton / oxygen ion conductor material with properties of a p-type semiconductor, and a current carrier depletion layer is at the interface between the cathode and the anode. The solid oxide fuel cell is not equipped with a solid electrolyte layer, so that the ohmic loss caused by electrolyte is decreased to zero; and meanwhile, the solid oxide fuel cell further has the advantages of low interface transportation loss, production cost and working temperature and the like.

The invention provides a method for improving the accuracy of a resistance value of a buried resistance printed circuit board. The method comprises the following steps of: 1, providing a board with a buried resistance layer, wherein the board comprises an insulating dielectric layer, the buried resistance layer and a copper foil layer; 2, pasting a first photoresist film, performing primary exposure, printing a line graph of a negative film on the first photoresist film, and performing primary development, wherein the line graph consists of a resistance line and a normal line, each of long sides of a line width of the resistance line is prolonged by 6mil, and each of wide sides of the line width of the resistance line is prolonged by 1.25mil; 3, performing primary etching and secondary etching; 4, pasting a second photoresist film, performing secondary exposure, printing a resistance graph of a positive film on the second photoresist film, and performing secondary development, wherein each of long sides of a line width of the resistance graph is shortened by 0.6mil, and each of wide sides of the line width of the resistance graph is widened by 6mil; 5, performing tertiary etching; and 6, performing blackening treatment on the surface of the board in a way of controlling a microetching amount within 1.1 to 1.5 mu.m, and performing additional compensation of -12 percent on the resistance graph of the positive film.

The invention discloses construction of a series of bio-reducible cation polysaccharide gene vectors taking polysaccharides including dextran, cyclodextrin and prolan as frameworks and having high gene transfer efficiency with an ATRP (Atom Transfer Radical Polymerization) method, which belongs to the technical field of non-viral gene vectors. In the ATRP method, a polymerization reaction is stable and is easy to adjust and control, a plurality of high-performance cation polysaccharide gene vectors which belong to different molecular weight series and have narrow weight distribution can be prepared as required, and the prepared cation polysaccharide gene vectors have high storage stability and can keep original performance after being stored for certain days or certain months. The polysaccharide cation gene vectors have higher transfer efficiency than a liposome lipfect2000 which is applied commercially internationally in cells such as Hepg2, Hela, C6, Cos7, HEK293 and the like, are easy to use, and have commercial potentials.

The invention, which belongs to the field of the communication technology, particularly discloses a short message system and a short message system-based intelligent dynamic conversation scene realizing method. The short message system comprises a keyword configuration file module, a dynamic effect configuration file module, a resource file module, a keyword-dynamic effect corresponding relation configuration file module, a starting module, a determination module, a multi-language keyword matching module, a dynamic scene realization module, and a system language matching module. In addition, the method comprise the following steps: reading a keyword configuration file, a dynamic effect configuration file, a resource file, a keyword-dynamic effect corresponding relation configuration file; and generating top-level displaying of dynamic view to a conversation interface according to the keyword-dynamic effect corresponding relation. According to the invention, a corresponding dynamic effect can be generated according to an input short message or a received short message of a user; and thus different surprises and experience can be provided in the dull and boring short message sending process.

The invention relates to a smart device, in particular to an electrochromic smart window based on polyoxometallate. Saturated polyoxometallate is taken as a raw material, conductive glass with a semiconductor film printed is taken as a substrate, and a composite film is prepared with the electrodeposition technology. An aqueous solution is used in the whole film preparation process and is environment-friendly and harmless, and the operation is convenient and easy to implement. The electrochromic device prepared from the film has good electrochromic performance and has commercial prospect.

The invention provides a culture medium for hybrid tumor cell clone and for preparing monoclonal antibodies and a preparation method thereof; RPMT 1640 complete media are prepared by conventional method, and then mixed with cell-free culture supernatant of the cells with certain proportions, such as BHK-21, CRFK, Hela and the like; the volume ratio of the complete media to each cell supernatant is (7-1):1. The advantages of the invention are as follows: due to the adoption of the inventive culture medium for hybrid tumor cell clone, the link in which BALB / c mouse peritoneal macrophage is used as feeder cells in the conventional hybrid tumor cells clone process is completely left out, which greatly simplifies clone operations and obviously increases the growth speed of the cloned cells.

The invention discloses an electrolyte containing a composite additive, and the electrolyte comprises an electrolyte lithium salt, an organic solvent and the composite additive; the organic solvent is a carbonic ester solvent, the composite additive is a salt with a strong Lewis base anion group and lithium nitrate, and the electrolyte can be applied to a lithium ion battery or a lithium metal battery. The electrolyte can react on the surface of a negative electrode to generate a layer of inorganic fast ion solid electrolyte protection film rich in lithium nitrogen oxide, lithium oxide and the like, so that the transmission of lithium ions in the solid electrolyte film is accelerated, and the strength of the solid electrolyte film is enhanced; therefore, the normal-temperature and high-temperature fast charge cycle performance and the normal-temperature and low-temperature power performance of the lithium ion battery are further improved; and the composite additive has good compatibility with the currently mainstream fluoroethylene carbonate additive.

The invention belongs to the technical field of a non-viral gene vector and a medicine / photosencitizer vector, and particularly relates to a multifunctional nanometer vector and a preparation method of the multifunctional nanometer vector, wherein the multifunctional nanometer vector is built by using silicon oxide nanometer particles as substrates, functionalizing the silicon oxide nanometer particles through surface modification, introducing photosensitive groups with ultraviolet / near infrared light response and using an ATRP (Atom Transfer Radical Polymerization) method. The multifunctionalnanometer vector has higher transfection efficiency than international JINBIAO PEI in cells of HepG2, COS7, 293, C6, Hela and the like, and has photoresponse gene release performance. Under the photostimulation, the photosensitive groups on the surfaces of the silicon oxide nanometer particles perform photolysis, so that positive ions fall off, and the genes are released; and the gene transfection efficiency can be greatly improved. Various different medicine or photosencitizer molecules can be loaded into porous structures of mesoporous silicon oxide nanometer particles; and good experimentfoundation is laid for the development of the novel photoresponse nanometer vector. The method has the advantages that the use method is simple; and the commercialization potential is realized.

The invention discloses a Cu2O / N-C oxygen reduction catalyst and preparation and application thereof. The preparation method of the catalyst comprises the steps that a certain amount of zinc salt anda carbon source are dissolved in an organic solvent, a copper source is added, the Cu2O / N-C oxygen reduction catalyst is obtained through pyrolysis, and the amount of generated cuprous oxide is regulated and controlled by adjusting the amount of the added copper source in an experiment. The method is simple and high in repeatability. The catalyst is a composite material of cuprous oxide and nitrogen-doped carbon, the cuprous oxide is an active site for oxygen reduction catalysis, and the nitrogen-doped carbon can improve the conductivity of the material, so that the material has relatively high current density. The prepared optimal material is used as an oxygen reduction catalyst of an aluminum-air battery, the oxygen reduction half-wave potential is 0.8V, and the limiting current densityis 4.6mA / cm<2>.

The invention discloses a doped stannic oxide and graphene composite material and a preparing method thereof. Graphene is used as a skeleton of the compound, and doped stannic oxide grows on graphene in a in-situ mode to form the composite material of a spongy three-dimensional structure, wherein the mass ratio of doped stannic oxide to graphene is (3-7):1, the particle size of doped stannic oxide is 3-20 nm, and doped elements include at least one of W, F and Sb, and the ratio of the atom total weight of the doped elements to the atomic weight of Sn is 1:(0.01-100). The preparing process is simpler than the previous compounding method, reaction conditions are controllable, the problems that the previous composite material is large in interface resistance and internal resistance, load particles aggregate, the structure is instable are solved by the prepared material, and the doped stannic oxide and graphene composite material has excellent electrochemical performance such as high specific capacity, good cycle performance and excellent rate capability.

The invention discloses construction of a series of bio-reducible cation polysaccharide gene vectors taking polysaccharides including dextran, cyclodextrin and prolan as frameworks and having high gene transfer efficiency with an ATRP (Atom Transfer Radical Polymerization) method, which belongs to the technical field of non-viral gene vectors. In the ATRP method, a polymerization reaction is stable and is easy to adjust and control, a plurality of high-performance cation polysaccharide gene vectors which belong to different molecular weight series and have narrow weight distribution can be prepared as required, and the prepared cation polysaccharide gene vectors have high storage stability and can keep original performance after being stored for certain days or certain months. The polysaccharide cation gene vectors have higher transfer efficiency than a liposome lipfect2000 which is applied commercially internationally in cells such as Hepg2, Hela, C6, Cos7, HEK293 and the like, are easy to use, and have commercial potentials.

The invention provides a polyacid-based pure inorganic multi-color electrochromic film. A preparing method of the electrochromic film includes the steps that (1) polyoxometallate is prepared into an aqueous solution A, the pH value of the solution is adjusted to be 2 through hydrochloric acid; (2) the commercial P25 powder TiO2 is prepared into sizing agents B capable of being used for silk-screen printing; (3) silk-screen printing is conducted on a conductive substrate through the sizing agents B so that a TiO2 thin layer can be printed on the surface of the conductive substrate; (4) the conductive substrate with the TiO2 thin layer is placed into the aqueous solution A, and electro-deposition is conducted; (5) the conductive substrate generated after the electro-deposition is conducted is taken out, cleaned through deionized water and ethyl alcohol, and dried through hot air. The hydrosolvent is adopted during the whole preparation process, and the method is environmentally friendly, free of harm to the environment and easy and convenient to operate. The prepared electrochromic film has good optical contrast and multi-color electrochromic performance, and a system for making an electrochromic display is provided.

The invention discloses a lithium metal battery electrolyte containing composite additives, which comprises electrolyte lithium salt, an organic solvent and composite additives, wherein the organic solvent is an ester solvent, and the composite additives include Lewis acid and lithium nitrate. The lithium metal battery electrolyte of the present invention can be converted into a layer of inorganic fast ion solid electrolyte protective layer rich in nitride and lithium oxide on the surface of the lithium metal negative electrode in situ, so as to promote the coarsening of lithium metal deposition grains and suppress nanoscale dendrites. Crystalline deposition is formed to improve battery safety; and it is compatible with current lithium-ion battery technology and has commercial potential. The invention also discloses a method for preparing the electrolyte solution of the lithium metal battery, which includes the following steps: under the protection of an inert gas, adding the composite additive into the ester solvent in which the lithium salt of the electrolyte is dissolved, and heating the electrolyte within the range of 25-60°C Stir for 1-6 hours. The preparation method has simple operation and stable process.

The invention discloses a triarylamine polymer and application thereof. The triarylamine polymer has a structural general formula shown in the following formula (I), wherein the definition of substituent groups in the formula (I) is the same as that in the specification. According to the invention, the triarylamine polymer has good stability and hole mobility, and can be used as a hole transport material to be applied to a quantum dot light-emitting device (QLED), an organic light-emitting device (OLED) and a perovskite solar cell (PSC).

The invention discloses a fluorine-containing pyridine piperazine urea compound. The structure is as shown in the formula I which is as shown in the description. The compound as shown in the formula Ihas effects of restraining and killing pest mites and mite eggs and can be used as an acaricide for controlling agricultural pest mites.

A method for constructing multifunctional gene therapy vectors based on gold nanoparticles. The invention belongs to the technical field of CT contrast agents and non-viral gene carriers, and specifically relates to gold nanoparticles as the skeleton, including spherical gold nanoparticles, rod-shaped gold nanoparticles (with different axis-to-diameter ratios), arrowhead-shaped gold nanoparticles, and octahedral gold nanoparticles. The morphology of gold nanoparticles, etc., using modified bovine serum albumin to wrap gold nanoparticles, and ATRP method to construct a multifunctional gene carrier. The polymerization reaction is stable and easy to control, and a variety of high-performance cationic gene carriers with different monomer contents can be prepared according to needs, and the storage stability is good, and the original performance can be maintained after being placed for several days or months. The cationic gene carrier has a higher transfection efficiency than the international "gold standard" PEI in HepG2, COS7, 293, C6 and other cells, and its cytotoxicity is much lower than that of PEI. It is simple to use and has commercial potential. And the material has a good CT imaging effect, which lays a good experimental foundation for the development of new contrast agents.

The invention discloses a method for pretreating lignocellulose biomass. According to the method, the raw material lignocellulose biomass with the particle size of 0.5-2mm is pretreated in a hydrothermal environment by using solid alkali as a catalyst to effectively catalyze the stripping degradation of the lignin and the dissolution separation of the hemicellulose in the lignocellulose, thereby breaking the compact structure of the lignocellulose. The separated components can be easily recovered and utilized, and a small amount of inhibitor is generated, thereby being beneficial to converting the lignocellulose biomass into the raw material which is suitable for subsequent enzymolysis fermentation for sugar production. Since the calcium magnesium composite metal oxide solid alkali catalyst can be recovered and recycled, the cost is effectively saved, and the reaction conditions are mild, thereby lowering the facility request and environmental pressure. Thus, the method gives consideration to both energy consumption and economical efficiency, is suitable for large-scale industrial application, and has commercialization potential.

The invention provides a cobalt fluoride-based composite electrode material and a preparation method thereof. The method comprises the following steps: S1, compounding a cobalt-based metal organic framework with a fluorine-containing material to obtain CoF2; and S2, fully grinding graphene oxide and CoF2 according to a preset proportion, putting the ground graphene oxide and CoF2 into a tubular furnace, heating to 300-500 DEG C at a heating rate of 5-10 DEG C / min in a gas atmosphere of air, and keeping the temperature for a preset time; and cooling, taking out the obtained powder, and fully grinding to obtain the rGO@CoF2. According to the preparation method, the rGO and the CoF2 are compounded, so that the obtained composite product has the electrochemical performance of fluoride and also keeps the layered morphology and good conductivity of the reduced graphene oxide rGO; meanwhile, CoF2 synthesized based on ZIF can maintain the porous structure and high stability of ZIF, and a new thought is provided for preparation of a high-performance battery material through proper selection of a precursor and a compounding mode of a conductive material.

The invention discloses Stenotrophomonas rhizophila S11 for preventing and treating rice blast, which is preserved in the General Microbiology Center of China Microbiological Culture Collection Management Committee, and the preservation number is CGMCC No.18346; and discloses Stenotrophomonas rhizophila Application of Bacillus sp. S11 in the preparation of medicines for controlling rice blast. At the same time, it also discloses a biocontrol agent for preventing and treating rice blast, a preparation method thereof, and an application in preventing and treating rice blast. The biocontrol agent includes the Stenotrophomonas rhizophilus S11. In the present invention, through the measurement of plate confrontation culture method, it is found that the S11 strain has a strong antagonistic effect on the rice blast fungus, and the diameter of the inhibition zone can reach 44mm; both greenhouse inoculation and field tests show that the S11 biocontrol fungus can effectively control rice blast. Therefore, the Stenotrophomonas rhizophilus S11 strain disclosed by the present invention can be used for biological control of rice blast, and has broad promotion and application prospects.

The invention, which belongs to the field of the communication technology, particularly discloses a short message system and a short message system-based intelligent dynamic conversation scene realizing method. The short message system comprises a keyword configuration file module, a dynamic effect configuration file module, a resource file module, a keyword-dynamic effect corresponding relation configuration file module, a starting module, a determination module, a multi-language keyword matching module, a dynamic scene realization module, and a system language matching module. In addition, the method comprise the following steps: reading a keyword configuration file, a dynamic effect configuration file, a resource file, a keyword-dynamic effect corresponding relation configuration file; and generating top-level displaying of dynamic view to a conversation interface according to the keyword-dynamic effect corresponding relation. According to the invention, a corresponding dynamic effect can be generated according to an input short message or a received short message of a user; and thus different surprises and experience can be provided in the dull and boring short message sending process.

The invention discloses a multivalent metal battery containing a two-dimensional nanosheet additive, the multivalent metal battery comprises an electrolyte and a multivalent metal negative electrode, the electrolyte comprises an electrolyte salt, the two-dimensional nanosheet additive and a solvent; the two-dimensional nanosheet additive is selected from one or more of carbon nitride, boron nitride, nitrogen-doped graphene, sulfur-doped graphene and oxygen-doped graphene. By adding the two-dimensional nanosheet additive into the electrolyte, metal deposition can be continuously and orderly induced on an electrochemical interface to form a compact and ordered metal deposit, so that the electrochemical performance of a total battery based on polyvalent metal as a negative electrode is improved, and the cycle life of the total battery is prolonged.

The invention discloses a method used for rapidly determining that whether hydrogen concentration of water samples is as large as an effective concentration, and belongs to the field of enzymatic analysis of biotechnology. According to the method, acetylcholine esterase, acetylthiocholine, a reaction buffer system reagent, and color developing agent DTNB are mixed uniformly, an obtained mixture is divided into two equal parts; hydrogen water to be tested is added into a first part of the mixture, and deionized water is added into a second part of the mixture, wherein adding amount of the hydrogen water is equal to that of the deionized water, and pH values of obtained solutions are both 7; and after reaction, hydrogen content can be determined by comparing absorbance values at visible light 412nm of the solutions, or based on the shade of the colour of yellow products, wherein the larger the absorbance value of the first part is than that of the second part, or the heavier the colour of a product of the first part is than that of a product of the second part, the higher the hydrogen content is. According to the method, hydrogen content of water can be determined directly via color development reaction of enzymatic determination.

The invention discloses a Cu2O / N-C oxygen reduction catalyst as well as its preparation and application. The catalyst is prepared by dissolving a certain amount of zinc salt and carbon source in an organic solvent, adding a copper source, and obtaining Cu by pyrolysis. 2 O / N-C oxygen reduction catalyst, the experiment adjusts the amount of cuprous oxide generated by adjusting the amount of copper source added. The method is simple and repeatable. The catalyst is a composite material of cuprous oxide and nitrogen-doped carbon. Cuprous oxide is the active site of oxygen reduction catalysis. Nitrogen-doped carbon can improve the electrical conductivity of the material and make the material have a higher current density. The best material prepared is used as an oxygen reduction catalyst for aluminum-air batteries, its oxygen reduction half-wave potential is 0.8V, and its limiting current density is 4.6mA / cm 2 .

The invention relates to a biochemical detection reagent box. The reagent box comprises a reagent A, a reagent B and a reagent C, wherein the reagent A is a SDS / [C2mim][BF4] compound reaction solution, the reagent B is color rendering substrate 3,3'5,5'-tetramethyl benzidine (TMB) solid powder, and the reagent C is a H2O2 solution. According to needs, the reagent box further comprises a reagent D, a reagent E and a reagent F, wherein the reagent D is HRP enzyme liquid, the reagent E is a buffer solution PBS, and the reagent F is a substrate solvent dimethyl sulfoxide (DMSO-d6, 99.9%). According to the reagent box, on the basis of the principle that the SDS / [C2mim][BF4] compound reaction solution can significantly improve the color rendering efficiency of HRP-H2O2-TMB reaction, and the synergism effect is adopted to achieve HRP enzyme activity determination and H2O2 concentration detection. The reagent box has the advantages of being quick, sensitive and stable in color rendering, reagent organisms for detection are non-toxic, the operation is quick and convenient, the cost is low, and the reagent box has commercial potential for large-scale HRP activity determination and H2O2 concentration detection.

The invention discloses a fluorine-containing pyridine piperazine urea compound. The structure is as shown in the formula I which is as shown in the description. The compound as shown in the formula Ihas effects of restraining and killing pest mites and mite eggs and can be used as an acaricide for controlling agricultural pest mites.

A method for preparing a silicon-carbon negative electrode material based on micron silicon dioxide, which comprises the following steps of: 1) preparing a slurry according to the mass ratio of silicon dioxide: carbon source: water=(30-80) : (5-15) : (60-120), wet grinding for 4-5h, freeze-drying to obtain nano-scale silicon dioxide; 2) carbonizing the obtained product of 1) at high temperature toobtain a silicon dioxide-carbon material, and then carrying out magnesium thermal reduction at 600-750 DEG C according to the mass ratio of silicon dioxide-carbon: Mg: NaCl=1:1:1-1:1:10, pickling, washing and drying to obtain the silicon-carbon nanoparticles; 3) ultrasonically mixing the nano particles of 2) with graphene oxide solution, spraying, thermal cracking and coating and reducing to obtain the material. The method has the advantages of low cost, simple operation and uneasy agglomeration, can maintain the original appearance of the sample, has good structural stability of the product,and has strong electrical conductivity and ion transmission capacity of the material.